• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An in-plane switching mode liquid crystal display device (LCD) is disclosed in which a first portion of one pixel region has alignment direction clockwise inclined relative to the extension direction of the data electrode, and a second portion of the pixel region has alignment direction counterclockwise inclined relative to the extension direction of the data electrode. This in-plane switching mode LCD has an improved viewing angle characteristics.
    公开号:US20010000128A1
    申请号:US09/729,083
    申请日:2000-12-05
    公开日:2001-04-05
    发明作者:Yong-Sung Ham
    申请人:Yong-Sung Ham；
    IPC主号:G02F1-134363
    专利说明:
    [1] 1. A. Field of the Invention
    [2] 2. The present invention relates to a liquid crystal display device, and more particularly to an in-plane switching (“IPS”) mode liquid crystal display device.
    [3] 3. B. Description of the Related Art
    [4] 4. Recently, the thin film transistor liquid crystal display devices (TFT LCDs) have been used as display devices in such applications as portable televisions and notebook computers, but these TFT LCDs have small viewing angles.
    [5] 5. In order to solve this problem, twisted nematic LCDs having, for example, optical compensation films and multi-domains, have been introduced. In these LCDs, however, the color of the image is largely shifted as the viewing angle direction increases.
    [6] 6. For a wide viewing angle, the IPS mode LCD is disclosed, for example, in JAPAN DISPLAY 92 page 547, Japanese Patent Unexamined Publication No. 7-36058, Japanese Patent Unexamined Publication No. 7-225388, and ASIA DISPLAY 95 page 707.
    [7] 7.FIG. 1 is a view showing the operation of liquid crystal (LC) molecules of the conventional IPS mode LCD. FIG. 2 is a view showing the long axis of the LC molecules shown in FIG. 1. As shown in the figures, a data electrode 8 and a common electrode 9 are aligned in Y axis direction at an angle θEL=90° relative to the X axis direction which is the extension direction of a gate bus line (not shown). θE=180° indicates an angle between the direction of electric field and X axis direction. θR indicates an angle between the alignment direction and the X axis direction, and angle θR is determined by a rubbing process in the range of 90° to 180°. θrot indicates a rotated angle of liquid crystal molecules 35 by the electric field applied between the two electrodes.
    [8] 8. When a voltage is not applied, liquid crystal molecules 35 denoted by dotted line are aligned according to the alignment direction at angle θR. When the voltage is applied, liquid crystal molecules 35 rotate counterclockwise by angle θrot. In the figures, liquid crystal molecules 35 are denoted by solid line after the voltage is applied, and a positive type liquid crystal is used in which electric permittivity of liquid crystal molecules in the long axis direction is larger than in the short axis direction. On the other hand, when negative type liquid crystal is used, the liquid crystal molecules are aligned perpendicular to the electric field direction.
    [9] 9. However, in the conventional IPS mode LCD, grey level inversion is caused by birefringence of the liquid crystal molecules as shown in FIG. 3a. Further, as shown in FIG. 3b, a white color is shifted to blue and yellow colors respectively in A and B viewing directions shown in FIG. 1. SUMMARY OF THE INVENTION
    [10] 10. An object of the present invention is to prevent a color shift in an in-plane switching mode liquid crystal display device.
    [11] 11. Another object of the present invention is to prevent a grey level inversion in an in-plane switching mode liquid crystal display device.
    [12] 12. Additional objects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the appended claims.
    [13] 13. To achieve the objects and in accordance with the purpose of the invention, as embodied and broadly described herein, the in-plane switching mode liquid crystal display of the present invention comprises: a first substrate having a plurality of pixels, data and common electrodes over the first substrate and substantially parallel with a reference direction, a first alignment layer over the data and common electrodes, wherein at least one of the plurality of pixels has a plurality of domains, and at least two adjacent domains of the plurality of domains have alignment directions opposite one another with respect to the reference direction.
    [14] 14. In another aspect the in-plane switching mode liquid crystal display of the present invention comprises: a substrate having a plurality of pixels, data and common electrodes over the substrate and substantially parallel with a reference direction, an alignment layer over the data and common electrodes and having first and second domains adjacent one another, each of the first and second domains having at least one of the plurality of pixels and an alignment direction opposite that of the other domain with respect to the reference direction.
    [15] 15. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed. BRIEF DESCRIPTION OF THE DRAWINGS
    [16] 16. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
    [17] 17. In the Figures:
    [18] 18.FIG. 1 is a view showing the operation of liquid crystal molecules in the conventional IPS mode LCD;
    [19] 19.FIG. 2 is a view showing the long axis of the LC molecules shown in FIG. 1;
    [20] 20.FIGS. 3a and 3 b are view showing a contrast ratio and a color shift of the conventional IPS mode LCD respectively;
    [21] 21.FIGS. 4a and 4 b are plan and sectional views showing an IPS mode LCD according to the present invention;
    [22] 22.FIG. 5 is a view showing the operation of liquid crystal molecules in a first embodiment of the present invention;
    [23] 23.FIG. 6 is a view showing a long axis of the LC molecules shown in FIG. 5;
    [24] 24.FIGS. 7a and 7 b are views showing a viewing angle characteristic and a color shift of the present invention respectively;
    [25] 25.FIG. 8 is a view showing a second embodiment of the present invention;
    [26] 26.FIG. 9 is a view showing a third embodiment of the present invention; and
    [27] 27.FIG. 10 is a view showing a fourth embodiment of the present invention. DETAILED DESCRIPTION
    [28] 28. Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
    [29] 29.FIGS. 4a and 4 b are plane and sectional views showing one pixel region of the IPS LCD implemented according to the present invention, where FIG. 4b is a sectional view taken along line A—A′ of FIG. 4a. As shown in these figures, a gate bus line 1 and a data bus line 2 are aligned to cross each other on a first substrate 10, defining a pixel region. Although only one pixel region is shown in the figures, a liquid crystal display device generally has a plurality of pixel regions.
    [30] 30. At the cross of gate and data bus lines 1 and 2, a thin film transistor (TFT) is formed, which comprises a gate electrode 5, a gate insulating layer 12, a semiconductor layer 15, an n+ semiconductor layer 16, a source electrode 6 and a drain electrode 7.
    [31] 31. In the pixel region, a data electrode 8 and a common electrode 9 are formed parallel to each other. Gate and common electrodes 5 and 9 are connected electrically to gate and common bus lines 1 and 3 respectively, and source and drain electrodes 6 and 7 are connected electrically to data bus line 2 and data electrode 8 respectively.
    [32] 32. Gate and common electrodes 5 and 9 are formed by etching a metal layer deposited by sputtering a metal such as Al, Mo, Ta or Al alloy. Gate insulating layer 12 is formed by depositing silicon oxide or silicon nitride on the surface of first substrate 10 which includes gate electrode 5, common electrode 9, and gate bus line 1. Semiconductor layer 15 is formed by etching an amorphous silicon layer deposited on gate insulating layer 12. n+ semiconductor layer 16 is formed by depositing an n+ amorphous silicon layer or doping an n+ ion into predetermined regions of the semiconductor layer 15. A passivation layer 20 is formed thereon by depositing silicon oxide or silicon nitride. Data bus line 2, data electrode 8, source electrode 6, and drain electrode 7 are formed thereon by depositing and etching a metal such as Cr.
    [33] 33. On passivation layer 20, a first alignment layer 23 a is formed by coating polyimide, polyamide or photo alignment materials. The polyimide or polyamide alignment layer is rubbed to impart an alignment direction. On the other hand, the photo-alignment layer such as polyvinylcinnamate or polysiloxane based materials may also be used and be exposed to an ultraviolet light to impart an alignment direction.
    [34] 34. On a second substrate 11, a black matrix 28 is formed to prevent a leakage of light through the regions of the TFT and gate, data and common bus lines 1, 2 and 3. Black matrix 28 is formed by depositing and patterning a Cr layer, a CrOX layer, or a black resin layer. A color filter layer 29 is formed thereon, which has one of R, G and B color filter elements (not shown) in each of the pixel regions. A second alignment layer 23 b is formed thereon by coating polyimide or polyamide, or photo-alignment materials such as polyvinylcinnamate or polysiloxane based materials.
    [35] 35. A liquid crystal layer 30 is formed by injecting liquid crystal between the two substrates.
    [36] 36.FIG. 5 is a view showing the operation of liquid crystal (LC) molecules in a first embodiment of the present invention. FIG. 6 is a view showing the long axis of the LC molecules shown in FIG. 5. Although not illustrated in FIGS. 4a and 4 b, this embodiment is characterized in that one pixel region is divided into a first domain I and a second domain II which are arranged parallel to the extension direction of the two electrodes. In FIG. 5, only a pair of electrodes 8 and 9 is illustrated for convenience of explanation.
    [37] 37. As shown in FIGS. 5 and 6, data electrode 8 and common electrode 9 are aligned in Y axis direction at an angle θEL=90° relative to the X axis direction that is the extension direction of gate bus line 1 shown in FIG. 4a. θE=180° indicates an angle between the electric field and X axis directions. θR1 and θR2 indicate angles of inclination between the Y axis direction and the first and second alignment directions respectively. θrot1 and θrot2 indicate the rotated angles of LC molecules 35 and 36 in the first and second domains respectively. In this embodiment, it is preferable that the LC molecules 35 and 36 in the two domains are aligned symmetrically relative to the extension directions of electrodes 8 and 9.
    [38] 38. When a voltage is not applied to the device, LC molecules 35 and 36 are aligned according to the alignment directions of the first and second domains. A positive type liquid crystal is used in this embodiment, and therefore the two alignment directions are determined in the ranges of 0° to 45°. On the other hand, when a negative type liquid crystal is used, the two alignment directions are determined in the ranges of 45° to 90°. In order to obtain an untwisted mode LCD, alignment directions of the second alignment layer are determined to be the same as alignment directions of the first alignment layer. On the other hand, the alignment directions of the second alignment layer are determined to be perpendicular to the alignment directions of the first alignment layer to obtain a twisted mode LCD.
    [39] 39. When a voltage is applied to the device, liquid crystal molecules 35 and 36 in the first and second domains are rotated in opposite directions to each other by angles θrot1 and θrot2 respectively, being symmetrical relative to the extension direction of data and common electrode 8 and 9.
    [40] 40. In this embodiment according to the present invention, the grey level inversion and the color shift can be prevented by the rotation of liquid crystal molecules in opposite directions, improving the viewing angle characteristics.
    [41] 41.FIG. 3a and 3 b are views showing the contrast ratio and the color shift of the conventional IPS mode LCD respectively, where grey level inversion regions are denoted by the shaded areas. FIG. 7a and FIG. 7b are views showing the contrast ratio and the color shift in the present invention respectively. As shown in FIG. 3a, the conventional IPS mode LCD has grey level inversion regions at polar viewing angle 60° and at azimuthal viewing angles between 90° and 180° and between 270° and 0°, while there is no grey level inversion in the LCD implemented according to the present invention at polar viewing angle 60° as shown in FIG. 7a.
    [42] 42. As shown in FIG. 3b, the conventional IPS mode LCD has a wide white color shift, while the present invention has a narrow white color shift as shown in FIG. 7b.
    [43] 43.FIG. 8 is a view showing a second embodiment, wherein one pixel region is divided into two domains which are arranged perpendicular to the extension direction of electrodes 8 and 9.
    [44] 44.FIG. 9 is a view showing a third embodiment, wherein one pixel region is divided into four domains. Alignment directions in the two upper domains are inclined in opposite directions to each other relative to the extension directions of data and common electrodes 8 and 9. Alignment directions in the two lower domains are also inclined in opposite directions to each other relative to the extension directions. In this embodiment, alignment directions in two left domains and in two right domains are inclined in opposite directions to each other, compensating for grey level inversions and color shifts of each other.
    [45] 45. In the embodiments according to the present invention, one pixel region is divided into a plurality of domains. Generally, it is preferable that half of the plural domains have alignment directions clockwise inclined relative to the extension directions of the data and common electrodes, and the other half of the plural domains have alignment directions counterclockwise inclined relative to the extension directions of the data and common electrodes, so that the alignment directions of the half of the plural domains are symmetrical to those of the other half of the plural domains relative to the extension directions of the data and common electrodes.
    [46] 46.FIG. 10 is a view showing a fourth embodiment, wherein the alignment directions in adjacent two pixel regions are inclined in symmetrically opposing directions to each other relative to the extension directions of two electrodes 8 and 9. Further, the present invention can provide an IPS mode LCD in which adjacent plural pixel regions of more than two, for example four adjacent pixel regions, are aligned symmetrically relative to the extension directions of data and common electrodes 8 and 9, so that they are rotated in opposite directions to each other. In this case, it is preferable that half of the plural pixel regions have alignment directions inclined clockwise relative to the data and common electrodes, and the other half of the plural pixel regions have alignment directions inclined counterclockwise relative to the data and common electrodes.
    [47] 47. In the IPS mode LCD according to the present invention, because each LC molecules in plural domains or in adjacent plural pixel regions are symmetrically rotated in opposite directions so as to compensate for the angular dependence of each other, grey level inversion and color shift are eliminated to improve the viewing angle characteristics.
    [48] 48. It will be apparent to those skilled in the art that various modifications and variations can be made in the in-plane liquid crystal display device of the present invention and in construction of this device without departing from the scope or spirit of the invention.
    [49] 49. Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
    权利要求:
    Claims (15)
    [1" id="US-20010000128-A1-CLM-00001] 1. An in-plane switching mode liquid crystal display device, comprising:
    a first substrate having a plurality of pixels;
    data and common electrodes over the first substrate and substantially parallel with a reference direction; and
    a first alignment layer over the data and common electrodes, wherein at least one of said plurality of pixels has a plurality of domains, and at least two adjacent domains of said plurality of domains have alignment directions opposite one another with respect to said reference direction.
    [2" id="US-20010000128-A1-CLM-00002] 2. The device according to
    claim 1 , further comprising:
    a second substrate facing the first substrate; and
    a second alignment layer over the second substrate.
    [3" id="US-20010000128-A1-CLM-00003] 3. The device according to
    claim 1 , wherein said first alignment layer includes a material selected from the group consisting of polyimide, polyamide, polyvinylcinnamate and polysiloxane based materials.
    [4" id="US-20010000128-A1-CLM-00004] 4. The device according to
    claim 1 , wherein said reference direction includes a longitudinal direction of one of said data and common electrodes.
    [5" id="US-20010000128-A1-CLM-00005] 5. The device according to
    claim 2 , wherein said second alignment layer has an alignment direction parallel with an alignment direction of said first alignment layer.
    [6" id="US-20010000128-A1-CLM-00006] 6. The device according to
    claim 2 , wherein said second alignment layer has an alignment direction perpendicular to an alignment direction of said first alignment layer.
    [7" id="US-20010000128-A1-CLM-00007] 7. The device according to
    claim 2 , wherein said second alignment layer includes a material selected from the group consisting of polyimide, polyamide, polyvinylcinnamate and polysiloxane based materials.
    [8" id="US-20010000128-A1-CLM-00008] 8. An in-plane switching mode liquid crystal display device comprising:
    a substrate having a plurality of pixels;
    data and common electrodes over the substrate and substantially parallel with a reference direction; and
    an alignment layer over the data and common electrodes and having first and second domains adjacent one another, each of said first and second domains having at least one of said pluarily of pixels and an alignment direction opposite that of the other domain with respect to said reference direction.
    [9" id="US-20010000128-A1-CLM-00009] 9. The device according to
    claim 8 , wherein said first and second domains have an equal number of pixels.
    [10" id="US-20010000128-A1-CLM-00010] 10. The device according to
    claim 8 , wherein the alignment directions of said first and second domains are symmetrical to one another with respect to said reference direction.
    [11" id="US-20010000128-A1-CLM-00011] 11. The device according to
    claim 8 , wherein said first and second domains each have one pixel.
    [12" id="US-20010000128-A1-CLM-00012] 12. The device according to
    claim 8 , wherein the first and second domains each have two pixels.
    [13" id="US-20010000128-A1-CLM-00013] 13. The device according to
    claim 8 , wherein said reference direction includes a longitudinal direction of one of said data and common electrodes.
    [14" id="US-20010000128-A1-CLM-00014] 14. An in-plane switching mode liquid crystal display device comprising:
    a substrate;
    data and common electrodes over the substrate and substantially parallel with a reference direction; and
    at least one alignment layer over the data and common electrodes, wherein a surface of said alignment layer has first and second domains adjacent one another, and said first and second domains have alignment directions opposite one another with respect to said reference direction.
    [15" id="US-20010000128-A1-CLM-00015] 15. The device according to
    claim 14 , wherein said reference direction includes a longitudinal direction of one of said data and common electrodes.
    类似技术:
    公开号 | 公开日 | 专利标题
    US6184961B1|2001-02-06|In-plane switching mode liquid crystal display device having opposite alignment directions for two adjacent domains
    US7474292B2|2009-01-06|Liquid crystal display device
    US5986735A|1999-11-16|In-plane switching mode liquid crystal display with alignment layers of different anchoring energies
    US6798482B2|2004-09-28|In-plane switching mode liquid crystal display device
    US6608662B1|2003-08-19|Liquid crystal display device
    US6741312B2|2004-05-25|In-plane switching mode liquid crystal display device
    US6924863B2|2005-08-02|In-plane switching mode active matrix type liquid crystal display device and method of fabricating the same
    US6400436B1|2002-06-04|In-plane switching mode liquid crystal display device with specific arrangement of common bus line, data electrode and common electrode
    US6784967B2|2004-08-31|In-plane switching LCD device having slanted corner portions
    US7304706B2|2007-12-04|IPS liquid crystal display device with edge of the pixel electrode, common electrode, and signal line having stairwise stepped portions
    JP2000137227A|2000-05-16|Multi domain liquid crystal display element
    US20010019388A1|2001-09-06|Multi-domain liquid crystal display device
    KR100781477B1|2007-12-03|Liquid crystal display device
    KR100426920B1|2004-04-13|Liquid crystal display device
    US6587173B2|2003-07-01|Multidomain liquid crystal display device
    US7440067B2|2008-10-21|Liquid crystal display device
    JP2003107508A|2003-04-09|Multi-domain vertical alignment type liquid crystal display
    KR100282329B1|2001-02-15|An in-plane switch type liquid crystal display device
    US7362399B2|2008-04-22|In-plane switching mode liquid crystal display device
    KR100259257B1|2000-06-15|An in-plane switching mode liquid crystal display device
    同族专利:
    公开号 | 公开日
    US20020097361A1|2002-07-25|
    US6853429B2|2005-02-08|
    US6184961B1|2001-02-06|
    US6466291B2|2002-10-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20050243256A1|2004-04-30|2005-11-03|Innolux Display Corp.|Fringe field switching mode liquid crystal display device|
    DE102016101537B4|2015-07-29|2021-12-02|Tianma Micro-Electronics Co., Ltd.|Liquid crystal display panels and processes for their manufacture, display devices|US4239346A|1979-05-23|1980-12-16|Hughes Aircraft Company|Compact liquid crystal display system|
    JPS5914056A|1982-07-15|1984-01-24|Mitsubishi Electric Corp|Device for testing system function|
    JPS60217803A|1984-04-13|1985-10-31|Iseki Agricult Mach|Speed reduction part of rotary plowing apparatus|
    US4726659B1|1986-02-24|1990-04-10|Rca Corp||
    DE68920702T2|1988-11-10|1995-06-14|Toshiba Kawasaki Kk|Liquid crystal display device, color filter therefor, and method of manufacturing the color filter.|
    US5576867A|1990-01-09|1996-11-19|Merck Patent Gesellschaft Mit Beschrankter Haftung|Liquid crystal switching elements having a parallel electric field and βo which is not 0° or 90°|
    DE69123327T2|1990-06-06|1997-04-10|Okuno Chem Ind Co|COLOR FILTER COATING MATERIAL FOR LIQUID CRYSTAL DISPLAY, COLOR FILTER MATERIAL, FORMATION OF A COATING AND PRODUCTION OF A COLOR FILTER|
    JPH0467127A|1990-07-09|1992-03-03|Hitachi Ltd|Liquid crystal display panel|
    US5245450A|1990-07-23|1993-09-14|Hosiden Corporation|Liquid crystal display device with control capacitors for gray-scale|
    SG42911A1|1990-11-21|1997-10-17|Catalysts & Chem Ind Co|Coating solution for forming transparent conductive coating process for preparing same conductive substrateprocess for preparing same and |
    US5307189A|1991-03-05|1994-04-26|Oki Electric Industry Co., Ltd.|Active-matrix-addressed liquid crystal with conductor collecting lines of force emanating from data electrode|
    EP0592063A3|1992-09-14|1994-07-13|Toshiba Kk|Active matrix liquid crystal display device|
    US5576858A|1991-10-14|1996-11-19|Hosiden Corporation|Gray scale LCD control capacitors formed between a control capacitor electrode on one side of an insulating layer and two subpixel electrodes on the other side|
    JPH05165061A|1991-12-17|1993-06-29|Sony Corp|Liquid crystal display device|
    US5473455A|1991-12-20|1995-12-05|Fujitsu Limited|Domain divided liquid crystal display device with particular pretilt angles and directions in each domain|
    US5494762A|1992-01-16|1996-02-27|Nippondenso Co., Ltd.|Non-aqueous electrolyte lithium secondary cell|
    US5504604A|1992-01-22|1996-04-02|Nec Corporation|Liquid crystal display elements with opposite twist domains aligned in the same direction on one substrate|
    US5309264A|1992-04-30|1994-05-03|International Business Machines Corporation|Liquid crystal displays having multi-domain cells|
    EP0916992B1|1992-09-18|2003-11-26|Hitachi, Ltd.|A liquid crystal display device|
    JP3296913B2|1993-01-20|2002-07-02|株式会社日立製作所|Active matrix type liquid crystal display|
    JP2572537B2|1993-02-10|1997-01-16|スタンレー電気株式会社|Liquid crystal display device and manufacturing method thereof|
    US5477358A|1993-06-21|1995-12-19|Case Western Reserve University|Chiral nematic liquid crystal display with homeotropic alignment and negative dielectric anisotropy|
    JP2975844B2|1993-06-24|1999-11-10|三洋電機株式会社|Liquid crystal display|
    JP2693368B2|1993-06-29|1997-12-24|スタンレー電気株式会社|Liquid crystal display device and method of manufacturing the same|
    JP2701698B2|1993-07-20|1998-01-21|株式会社日立製作所|Liquid crystal display|
    KR970000356B1|1993-09-18|1997-01-08|엘지전자 주식회사|Light polymer alignment film forming method of liquid crystal display element|
    KR100367869B1|1993-09-20|2003-06-09|가부시끼가이샤 히다치 세이사꾸쇼|LCD Display|
    JP3294689B2|1993-11-09|2002-06-24|株式会社日立製作所|Liquid crystal display|
    JP2942161B2|1993-12-28|1999-08-30|キヤノン株式会社|Liquid crystal alignment treatment method, liquid crystal element manufacturing method using the method, and liquid crystal element|
    JP3543351B2|1994-02-14|2004-07-14|株式会社日立製作所|Active matrix type liquid crystal display|
    JPH10325961A|1994-03-17|1998-12-08|Hitachi Ltd|Active matrix type liquid crystal display device|
    US5864376A|1994-04-21|1999-01-26|Nec Corporation|LCD of a selected twist angle through an LC material of a selected chiral pitch|
    EP0683417A1|1994-05-17|1995-11-22|Canon Kabushiki Kaisha|Liquid crystal device and liquid crystal apparatus|
    JPH0832049A|1994-07-20|1996-02-02|Sansha Electric Mfg Co Ltd|Semiconductor device|
    JPH0862586A|1994-08-19|1996-03-08|Matsushita Electric Ind Co Ltd|Liquid crystal display element|
    US5717474A|1994-09-30|1998-02-10|Honeywell Inc.|Wide-viewing angle multi-domain halftone active matrix liquid crystal display having compensating retardation|
    TW354380B|1995-03-17|1999-03-11|Hitachi Ltd|A liquid crystal device with a wide visual angle|
    US5831700A|1995-05-19|1998-11-03|Kent State University|Polymer stabilized four domain twisted nematic liquid crystal display|
    TW477905B|1995-06-14|2002-03-01|Hitachi Ltd|Liquid crystal display device formed of high resistance black matrix with wide view angle|
    JPH095763A|1995-06-14|1997-01-10|Hitachi Ltd|Color liquid crystal display device|
    JPH095764A|1995-06-20|1997-01-10|Hitachi Ltd|Liquid crystal display substrate|
    JPH0922458A|1995-07-07|1997-01-21|Ricoh Co Ltd|Facsimile equipment|
    US5751971A|1995-07-12|1998-05-12|Cabletron Systems, Inc.|Internet protocol work group routing|
    JP3289099B2|1995-07-17|2002-06-04|株式会社日立製作所|Active matrix type liquid crystal display device and manufacturing method thereof|
    JP2787661B2|1995-07-27|1998-08-20|株式会社日立製作所|Liquid crystal display|
    JPH0943590A|1995-07-27|1997-02-14|Hitachi Ltd|Liquid crystal display device|
    JP3464570B2|1995-08-21|2003-11-10|株式会社日立ディスプレイズ|Color liquid crystal display device|
    US5760856A|1995-09-08|1998-06-02|Hitachi, Ltd.|In-plane field type liquid crystal display device with light shielding pattern suitable for high aperture ratio|
    WO1997010530A1|1995-09-14|1997-03-20|Hitachi, Ltd.|Active matrix liquid crystal display|
    TW454101B|1995-10-04|2001-09-11|Hitachi Ltd|In-plane field type liquid crystal display device comprising liquid crystal molecules with more than two different kinds of reorientation directions and its manufacturing method|
    JP3632934B2|1995-10-04|2005-03-30|株式会社日立ディスプレイズ|Active matrix liquid crystal display device|
    JPH09105908A|1995-10-09|1997-04-22|Hitachi Ltd|Active matrix type liquid crystal display device|
    JP2758864B2|1995-10-12|1998-05-28|株式会社日立製作所|Liquid crystal display|
    JPH09105941A|1995-10-13|1997-04-22|Stanley Electric Co Ltd|Liquid crystal display device|
    TW329500B|1995-11-14|1998-04-11|Handotai Energy Kenkyusho Kk|Electro-optical device|
    US5745207A|1995-11-30|1998-04-28|Matsushita Electric Industrial Co., Ltd.|Active matrix liquid crystal display having electric fields parallel to substrates|
    JP3294748B2|1995-12-04|2002-06-24|株式会社日立製作所|Active matrix liquid crystal display panel|
    JP3642634B2|1995-12-08|2005-04-27|富士通ディスプレイテクノロジーズ株式会社|Liquid crystal display panel and manufacturing method thereof|
    KR0163897B1|1995-12-28|1999-01-15|김광호|Fabrication method of 4-divided domain oriented lcd|
    KR0169016B1|1995-12-29|1999-03-20|구자홍|Fabrication method of twist nematic liquid crystal cell using a light|
    US5852485A|1996-02-27|1998-12-22|Sharp Kabushiki Kaisha|Liquid crystal display device and method for producing the same|
    JP3427611B2|1996-03-27|2003-07-22|株式会社日立製作所|Liquid crystal display|
    JPH09269507A|1996-03-29|1997-10-14|Hosiden Corp|Liquid crystal display element|
    KR100225910B1|1996-04-04|1999-10-15|구자홍|Lcd device|
    JP3087668B2|1996-05-01|2000-09-11|日本電気株式会社|Liquid crystal display device, its manufacturing method and its driving method|
    JPH09297310A|1996-05-01|1997-11-18|Stanley Electric Co Ltd|Liquid crystal display element and its production|
    JP3396130B2|1996-06-03|2003-04-14|シャープ株式会社|Liquid crystal display|
    US5959708A|1996-06-21|1999-09-28|Hyundai Electronics Industries Co., Ltd.|Liquid crystal display having a conductive high molecular film for preventing the fringe field in the in-plane switching mode|
    JP3718321B2|1996-07-15|2005-11-24|株式会社東芝|End hat component for magnetron and manufacturing method thereof|
    JPH1040330A|1996-07-19|1998-02-13|Toshiba Corp|Fluorescent pattern detector and postal matter processor using the detector|
    JP2701832B2|1996-07-31|1998-01-21|株式会社日立製作所|Liquid crystal display|
    US6453345B2|1996-11-06|2002-09-17|Datadirect Networks, Inc.|Network security and surveillance system|
    KR100250796B1|1996-11-29|2000-04-01|김영환|Liquid crystal display element and its manufacturing method|
    KR100250795B1|1996-11-29|2000-04-01|김영환|Liquid crystal display element and its manufacturing method|
    JPH10186366A|1996-12-26|1998-07-14|Fujitsu Ltd|Liquid crystal display device|
    JP3313608B2|1997-03-31|2002-08-12|日本電気株式会社|Manufacturing method of liquid crystal display element|
    KR100257370B1|1997-05-19|2000-05-15|구본준|In plane switching mode liquid crystal display device|
    KR100293806B1|1997-06-25|2001-10-24|박종섭|Liquid crystal display|
    KR100248210B1|1997-06-30|2000-03-15|김영환|Liquid crystal display device|
    US6184961B1|1997-07-07|2001-02-06|Lg Electronics Inc.|In-plane switching mode liquid crystal display device having opposite alignment directions for two adjacent domains|
    US5907380A|1997-10-30|1999-05-25|International Business Machines Corporation|Liquid crystal cell employing thin wall for pre-tilt control|
    KR19990056726A|1997-12-29|1999-07-15|김영환|LCD|
    US6061115A|1998-11-03|2000-05-09|International Business Machines Incorporation|Method of producing a multi-domain alignment layer by bombarding ions of normal incidence|
    US6272129B1|1999-01-19|2001-08-07|3Com Corporation|Dynamic allocation of wireless mobile nodes over an internet protocol network|
    JP3450776B2|1999-12-28|2003-09-29|株式会社エヌ・ティ・ティ・ドコモ|Position management method of mobile terminal in mobile radio packet communication system and mobile radio packet communication system|
    AU2756201A|2000-01-07|2001-07-16|Mdiversity, Inc.|Dynamic channel allocation in multiple-access communication systems|
    US7159237B2|2000-03-16|2007-01-02|Counterpane Internet Security, Inc.|Method and system for dynamic network intrusion monitoring, detection and response|
    US20020021745A1|2000-04-07|2002-02-21|Negus Kevin J.|Multi-channel-bandwidth frequency-hopping system|
    US7007301B2|2000-06-12|2006-02-28|Hewlett-Packard Development Company, L.P.|Computer architecture for an intrusion detection system|
    WO2002001807A2|2000-06-28|2002-01-03|Broadcom Corporation|Multi-mode controller|
    US6985465B2|2000-07-07|2006-01-10|Koninklijke Philips Electronics N.V.|Dynamic channel selection scheme for IEEE 802.11 WLANs|
    WO2002009458A2|2000-07-24|2002-01-31|Bluesocket, Inc.|Method and system for enabling seamless roaming in a wireless network|
    US6990080B2|2000-08-07|2006-01-24|Microsoft Corporation|Distributed topology control for wireless multi-hop sensor networks|
    US6728514B2|2000-09-08|2004-04-27|Wi-Lan Inc.|Scalable wireless network topology systems and methods|
    US20020032871A1|2000-09-08|2002-03-14|The Regents Of The University Of Michigan|Method and system for detecting, tracking and blocking denial of service attacks over a computer network|
    CA2425079A1|2000-10-06|2002-04-11|Cognio, Inc.|Systems and methods for interference mitigation among multiple wlan protocols|
    US20020066034A1|2000-10-24|2002-05-30|Schlossberg Barry J.|Distributed network security deception system|
    EP1207707B1|2000-11-17|2008-08-13|Sony Deutschland GmbH|Transmission of carry-on objects using a wireless ad-hoc networking environment|
    US20020090089A1|2001-01-05|2002-07-11|Steven Branigan|Methods and apparatus for secure wireless networking|
    US20020090952A1|2001-01-08|2002-07-11|Cantwell Charles E.|Location of devices using wireless network nodes|
    US7058358B2|2001-01-16|2006-06-06|Agere Systems Inc.|Enhanced wireless network security using GPS|
    US7058031B2|2001-01-31|2006-06-06|Qualcomm Incorporated|Method and apparatus for efficient use of communication resources in a data communication system under overload conditions|US6184961B1|1997-07-07|2001-02-06|Lg Electronics Inc.|In-plane switching mode liquid crystal display device having opposite alignment directions for two adjacent domains|
    KR100251512B1|1997-07-12|2000-04-15|구본준|In-plane switching mode lcd|
    JPH11149095A|1997-11-18|1999-06-02|Sanyo Electric Co Ltd|Liquid crystal display device and projector device using this|
    KR100293436B1|1998-01-23|2001-08-07|구본준, 론 위라하디락사|In plane switching mode liquid crystal display device|
    US6809787B1|1998-12-11|2004-10-26|Lg.Philips Lcd Co., Ltd.|Multi-domain liquid crystal display device|
    KR100313949B1|1998-11-11|2002-09-17|엘지.필립스 엘시디 주식회사|Multi-domain Liquid Crystal Display Device|
    JP2000147511A|1998-11-13|2000-05-26|Fujitsu Ltd|Liquid crystal display device and its manufacture|
    US6791647B1|1999-02-24|2004-09-14|Lg Philips Lcd Co., Ltd.|Multi-domain liquid crystal display device|
    KR100308159B1|1999-04-02|2001-10-29|구본준, 론 위라하디락사|Multi-domain liquid crystal display device|
    JP2000321587A|1999-05-11|2000-11-24|Internatl Business Mach Corp <Ibm>|Liquid crystal display device and its production|
    KR20010060518A|1999-12-27|2001-07-07|윤종용|A liquid crystal display|
    KR100840308B1|2000-06-13|2008-06-20|삼성전자주식회사|A vertically aligned liquid crystal display having the optimum domain size|
    JP2002139737A|2000-07-31|2002-05-17|Matsushita Electric Ind Co Ltd|Liquid crystal display device and its manufacturing method|
    KR20020017047A|2000-08-28|2002-03-07|구본준, 론 위라하디락사|liquid crystal display device and manufacturing method thereof|
    KR100595298B1|2000-09-23|2006-07-03|엘지.필립스 엘시디 주식회사|HTN mode liquid crystal display device|
    KR100448046B1|2000-12-05|2004-09-10|비오이 하이디스 테크놀로지 주식회사|Reflective type fringe field swiching mode lcd|
    TW571165B|2000-12-15|2004-01-11|Nec Lcd Technologies Ltd|Liquid crystal display device|
    US6977704B2|2001-03-30|2005-12-20|Fujitsu Display Technologies Corporation|Liquid crystal display|
    KR100831278B1|2001-08-10|2008-05-22|엘지디스플레이 주식회사|Multi-domain liquid crystal display device|
    WO2003019276A2|2001-08-29|2003-03-06|Koninklijke Philips Electronics N.V.|Transflective liquid crystal display|
    US7289179B2|2002-11-08|2007-10-30|Samsung Electronics Co., Ltd.|Liquid crystal display|
    KR101016525B1|2003-10-10|2011-02-24|엘지디스플레이 주식회사|In plane switching mode liquid crystal display device|
    KR100643039B1|2003-12-11|2006-11-10|엘지.필립스 엘시디 주식회사|In-Plane Switching Mode Liquid Crystal Display Device|
    TWI266116B|2003-12-23|2006-11-11|Innolux Display Corp|Active matrix liquid crystal display|
    CN100356252C|2003-12-27|2007-12-19|鸿富锦精密工业（深圳）有限公司|Active matrix type liquid crystal display device|
    US9039728B2|2007-08-31|2015-05-26|BiO2 Medical, Inc.|IVC filter catheter with imaging modality|
    US9557456B2|2010-01-29|2017-01-31|The United States Of America As Represented By The Secretary Of The Army|Broadband optics for manipulating light beams and images|
    US9983479B2|2010-04-21|2018-05-29|Beam Engineering For Advanced Measurements Co.|Fabrication of high efficiency, high quality, large area diffractive waveplates and arrays|
    US10114239B2|2010-04-21|2018-10-30|Beam Engineering For Advanced Measurements Co.|Waveplate lenses and methods for their fabrication|
    US20110262844A1|2010-04-21|2011-10-27|Beam Engineering For Advanced Measurement Co.|Fabrication of high efficiency, high quality, large area diffractive waveplates and arrays|
    US10197715B1|2013-03-15|2019-02-05|Beam Engineering For Advanced Measurements Co.|Methods of diffractive lens and mirror fabrication|
    KR101874424B1|2011-09-05|2018-07-06|삼성디스플레이 주식회사|Alignment layer for display device, liquid crystal display device including the same and method and apparatus for treating the same|
    US10107945B2|2013-03-01|2018-10-23|Beam Engineering For Advanced Measurements Co.|Vector vortex waveplates|
    US10185182B2|2013-03-03|2019-01-22|Beam Engineering For Advanced Measurements Co.|Mechanical rubbing method for fabricating cycloidal diffractive waveplates|
    WO2015161084A1|2014-04-16|2015-10-22|Beam Engineering For Advanced Measurements Co.|Methods and apparatus for human vision correction using diffractive waveplate lenses|
    CN104849923B|2015-05-07|2018-09-21|厦门天马微电子有限公司|A kind of pixel unit array and liquid crystal display device|
    US10330947B2|2015-06-22|2019-06-25|Beam Engineering For Advanced Measurements, Co.|Diffractive mirrors and diffractive telescopes with corrected temporal dispersion|
    US10191296B1|2015-06-30|2019-01-29|Beam Engineering For Advanced Measurements Co.|Laser pointer with reduced risk of eye injury|
    US9976911B1|2015-06-30|2018-05-22|Beam Engineering For Advanced Measurements Co.|Full characterization wavefront sensor|
    US10436957B2|2015-10-27|2019-10-08|Beam Engineering For Advanced Measurements Co.|Broadband imaging with diffractive waveplate coated mirrors and diffractive waveplate objective lens|
    US10423045B2|2016-11-14|2019-09-24|Beam Engineering For Advanced Measurements Co.|Electro-optical diffractive waveplate beam shaping system|
    US10274805B2|2017-06-13|2019-04-30|Beam Engineering For Advanced Measurements Co.|Polarization-independent switchable lens system|
    US11175441B1|2018-03-05|2021-11-16|Beam Engineering For Advanced Measurements Co.|Polarization-independent diffractive optical structures|
    法律状态:
    2002-09-26| STCF| Information on status: patent grant|Free format text: PATENTED CASE |
    2006-03-22| FPAY| Fee payment|Year of fee payment: 4 |
    2008-10-17| AS| Assignment|Owner name: LG DISPLAY CO., LTD., KOREA, REPUBLIC OF Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;REEL/FRAME:021754/0230 Effective date: 20080304 Owner name: LG DISPLAY CO., LTD.,KOREA, REPUBLIC OF Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;REEL/FRAME:021754/0230 Effective date: 20080304 |
    2010-04-08| FPAY| Fee payment|Year of fee payment: 8 |
    2014-03-27| FPAY| Fee payment|Year of fee payment: 12 |
    优先权:
    申请号 | 申请日 | 专利标题
    KR97-31257||1997-07-07||
    KR1019970031257A|KR100282329B1|1997-07-07|1997-07-07|An in-plane switch type liquid crystal display device|
    KR1997-31257||1997-07-07||
    KR1019980017254A|KR100259257B1|1998-05-13|1998-05-13|An in-plane switching mode liquid crystal display device|
    KR98-17254||1998-05-13||
    US09/110,961|US6184961B1|1997-07-07|1998-07-07|In-plane switching mode liquid crystal display device having opposite alignment directions for two adjacent domains|
    US09/729,083|US6466291B2|1997-07-07|2000-12-05|In-plane switching mode liquid crystal display device having plurality of pixel regions|US09/729,083| US6466291B2|1997-07-07|2000-12-05|In-plane switching mode liquid crystal display device having plurality of pixel regions|
    US10/108,429| US6853429B2|1997-07-07|2002-03-29|In-plane switching mode liquid crystal display device having multiple domains|
    [返回顶部]