• 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:
    The present invention relates to a plasma display panel suitable for applying a high frequency discharge. The PDP using the high frequency according to the present invention includes a high frequency electrode to which a high frequency signal is applied for high frequency discharge, a scan electrode to which a scan signal for address discharge is applied, an address electrode to which a data signal for address discharge is applied, and a discharge gas. It characterized in that it comprises a discharge space filled with. According to the present invention, high frequency discharge can occur smoothly between opposed electrodes having a sufficient interval, and the upper plate structure is simpler than the lower plate structure, thereby improving the transmittance of visible light.
    公开号:KR20000060034A
    申请号:KR19990008060
    申请日:1999-03-11
    公开日:2000-10-16
    发明作者:강정원
    申请人:구자홍；엘지전자 주식회사；
    IPC主号:
    专利说明:

    Plasma Display Panel Using High Frequency
    The present invention relates to a plasma display device, and more particularly to a plasma display panel suitable for high frequency discharge.
    Recently, as the demand for multimedia displays increases, the technology development for plasma display panels (PDPs), which are promising for home use due to its advantages in large screens and viewing angles and favorable prices, has been rapidly made, and in particular, PDPs. The research on the increase of the brightness and the discharge efficiency of the is actively conducted. The PDP generally uses a gas discharge phenomenon to display characters or graphics by using visible light generated by vacuum ultraviolet rays generated by gas discharge emitting phosphors. These PDPs can be classified into AC type and AC type, and recent research and development is focused on AC type.
    Referring to FIG. 1, a structure of a PDP of a three-electrode alternating current (AC) type that is commonly used is illustrated.
    The PDP shown in FIG. 1 corresponds to one pixel and includes an upper substrate 10 which is a display surface of an image, and a lower substrate 12 arranged in parallel with the upper substrate 10 by a partition wall 14. On the upper substrate 10, a sustain electrode 16, that is, a scan / hold electrode and a sustain electrode are arranged side by side, and the sustain electrode 16 is a bus electrode composed of a transparent (ITO) electrode 16A and Cr / Cu / Cr ( 16B). In the sustain electrode 16, the scan / sustain electrode serves to supply a scan signal for address discharge and a sustain signal for sustain discharge, and the sustain electrode serves to supply a sustain signal for sustain discharge. On the upper substrate 10 on which the sustain electrodes 16 are disposed, a dielectric layer 18 for charge accumulation is applied by a screen printing method, and a protective film 20 is formed on the surface of the dielectric layer 18. Here, the protective film 20 not only protects the dielectric layer 18 from sputtering of plasma particles, thereby extending its lifespan, but also increases the emission efficiency of secondary electrons and reduces the change in discharge characteristics of the refractory metal due to oxide contamination. Magnesium oxide (MgO) membranes are mainly used. The address electrode 22 is formed on the lower substrate 12 by a screen printing method. The address electrode 22 serves to supply a data signal for address discharge. The partition wall 14 is formed on the lower substrate 12 on which the address electrode 22 is formed in parallel with the address electrode 22 by using a screen printing method or a sand blast method. The partition wall 14 serves to support the upper substrate 10 and the lower substrate 12 as well as providing a discharge space inside the discharge cell to block electrical and optical interference between the discharge cells. Phosphors 24R, 24G, and 24B, each of which generate intrinsic colors of visible light, are formed on the surfaces of the lower substrate 12 and the partition 14 on which the address electrodes 22 are formed, by a screen printing method. After adhering the upper and lower plates separately made and evacuating, the inert gas is injected at an appropriate pressure, and then the injection port is sealed to complete the PDP device.
    In the PDP having such a structure, an arbitrary discharge cell is selected by the address discharge between the address electrode 22 and the sustain electrode 16, and then sustain discharge is sustained between the sustain electrode 16. By emitting light 24), the PDP displays the desired image. In this case, by adjusting the sustain discharge time to implement the step-by-step brightness, that is, gray scale (Gray Scale) necessary for displaying the image. In this case, the sustain discharge period, that is, the number of sustain discharges, is an important factor in determining the brightness and discharge efficiency of the PDP.
    However, AC-type PDP has become an obstacle to commercialization due to efficiency and cost problems. The cost problem is expected to gradually decrease as PDP is mass-produced, but the efficiency is difficult to improve with the current structure and driving method.
    In detail, conventionally, a sustain pulse having a duty ratio of 1, a frequency of about 200 to 300 kHz, and a pulse width of about 10 to 20 Hz is periodically applied between the sustain electrodes 16 for sustain discharge. Done. In this case, the sustain discharge occurs only once at an extremely short instant per sustain pulse. The charged particles generated by the sustain discharge move the discharge paths formed between the sustain electrodes 16 according to the polarities of the electrodes, so that wall charges are formed in the discharge space of the cell, and the discharge voltage in the discharge space is increased by the wall charges. As it decreases, the discharge stops. In other words, the sustain discharge caused by the conventional sustain pulse is generated only once at a short time per pulse, and most of the other time is consumed in the preparation of the wall charge and the next discharge, so that the brightness and discharge efficiency of the PDP are low. There was no.
    In order to solve such low luminance and discharge efficiency of the PDP, a method for using a high frequency discharge using a high frequency signal in the range of 1 to 100 MHz as a display discharge has emerged. This high frequency discharge causes continuous ionization and excitation of the discharge gas by vibrating the electrons by vibrating electric field, which can cause continuous discharge without almost disappearing electrons for most of the sustain discharge time. It becomes possible.
    However, when the above-described high frequency discharge is applied to the conventional discharge cell as shown in FIG. 1, the effects of the high frequency discharge cannot be expected, and problems such as erroneous discharge and noise due to the influence of the high frequency signal are generated. . In detail, the high frequency discharge requires a distance between the electrodes to a certain degree because the electrons must vibrate without dissipation between the two electrodes. However, in the conventional discharge cell structure, the distance between the sustain electrodes is not only small, but there is a limit to increasing the distance between the sustain electrodes in the trend of decreasing the face of the discharge cells for high resolution. Accordingly, there is a demand for a structure of a PDP suitable for high frequency discharge.
    Accordingly, an object of the present invention is to provide a PDP using a high frequency suitable for generating a smooth high frequency discharge.
    Another object of the present invention is to provide a PDP capable of improving luminance by improving transmittance of visible light generated by high frequency discharge.
    1 is a perspective view showing the structure of a conventional plasma display panel.
    2 is a cross-sectional view showing a discharge cell structure of a PDP according to an embodiment of the present invention.
    3 is a driving waveform diagram for driving the discharge cell shown in FIG.
    4 is a plan view illustrating an electrode structure disposed on a lower substrate of a PDP to which a discharge cell shown in FIG. 3 is applied.
    FIG. 5 is a diagram illustrating a configuration of a PDP driving apparatus to which a discharge cell shown in FIG. 3 is applied.
    <Simple explanation of symbols for main parts of drawings>
    10, 30: upper substrate 12, 36: lower substrate
    14, 48: partition 16A: transparent electrode
    16B: bus electrode 16: sustain electrode
    18, 34, 40, 44: dielectric layers 20, 46: protective film
    22, 38: address electrode 24R, 24G, 24B, 50: phosphor
    32: high frequency electrode 42: scanning electrode
    42: scanning electrode 52: PDP
    54: low pass filter 56: high pass filter
    58: AC address drive unit 60: high frequency drive unit
    In order to achieve the above object, a PDP using a high frequency according to the present invention is a high frequency electrode to which a high frequency signal is applied for high frequency discharge, a scan electrode to which a scan signal for address discharge is applied, and a data signal for address discharge is applied. And an discharge space filled with the address electrode and the discharge gases.
    Other objects and advantages of the present invention in addition to the above object will be apparent from the description of the preferred embodiment of the present invention with reference to the accompanying drawings.
    Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 to 5.
    2 illustrates a discharge cell structure of a PDP according to an exemplary embodiment of the present invention, wherein the discharge cell of the PDP shown in FIG. 2 includes a high frequency electrode 32 and a lower substrate 36 formed on the upper substrate 30. ), An address electrode 32 and a scan electrode 36 formed to intersect each other, and a partition wall 48 formed between the upper substrate 30 and the lower substrate 36 are provided.
    In the discharge cell of the PDP shown in FIG. 2, the high frequency electrode 32 is formed on the upper substrate 30 to supply a high frequency signal for high frequency discharge. The first dielectric layer 34 is formed on the upper substrate 30 on which the high frequency electrode 32 is disposed to serve to insulate the high frequency electrode 32 from the plasma, to protect the wall charge effect, and to protect the high frequency electrode 32. do. The address electrode 38 is formed parallel to the high frequency electrode 32 on the lower substrate 36 to supply a data signal for address discharge. On the lower substrate 36 on which the address electrode 38 is formed, a second dielectric layer 20 for insulation is formed. The scan electrode 42 is formed on the second dielectric layer 40 in a direction crossing the address electrode 38 to supply a scan signal for address discharge. The third dielectric layer 44 is formed on the second dielectric layer 40 on which the scan electrode 42 is formed, after forming the third dielectric layer 44 for the insulation between the plasma and the scan electrode 42 and for storing wall charges. The protective film 46 is formed on the purpose of protecting the third dielectric layer 44 and having a high secondary electron emission coefficient to lower the voltage during address discharge. In order to block electrical and optical interference between the discharge cells, a discharge space is provided inside the discharge cell, and a partition wall 48, which serves to support the upper substrate 30 and the lower substrate 36, is formed on the protective layer 46. . In this case, the partition wall 48 preferably has a well shape as shown in FIG. 3. In the conventional PDP as shown in FIG. 1, the surface discharge during the sustain discharge, that is, the discharge generated by applying a voltage to two sustain electrodes disposed on one surface has no difficulty in isolating the plasma in units of discharge cells. The discharge is due to the difficulty in isolating the plasma in units of discharge cells by using opposite discharge, that is, discharge generated between the electrodes of the upper and lower plates. In other words, the partition wall 48 is formed in a lattice structure to isolate the discharge space in units of discharge cells. Only the surface of the partition 48 is formed with a phosphor 50 that generates visible light having a unique color, respectively. This is to ensure that visible light generated by the discharge can be transmitted through the top plate without disturbing the address discharge generated by the address electrode 38 and the scan electrode 42. After adhering and exhausting the upper and lower plates made separately, inert gas is injected at a suitable pressure, and then the injection port is sealed to complete the PDP device.
    As a result, in the PDP according to the present invention, high frequency discharge can occur smoothly between the opposite electrodes 32 and 42 having a sufficient interval, and the upper plate structure is simpler than the lower plate structure, thereby improving the transmittance of visible light. In addition, in the PDP according to the present invention, the phosphor 50 is applied only to the partition wall 48 having a relatively large area so as not to interfere with the address discharge generated by the address electrode 38 and the scanning electrode 42 of the lower plate. In addition, visible light generated by the discharge can be transmitted through the top plate well.
    3 illustrates a driving waveform for driving the discharge cell shown in FIG. 2.
    First, in the discharge cell shown in FIG. 2, the scan signal Sp is applied to the scan electrode 42 and the data signal Dp is applied to the address electrode 38 to generate an address discharge. Initial charges will be generated. Subsequently, a high frequency discharge using the initial charge is generated during the sustain period by the high frequency signal RF applied to the high frequency electrode 32. In this case, by ionizing and exciting the gas in the discharge space continuously while the electrons vibrate in the discharge space by the high frequency signal, the amount of vacuum ultraviolet rays is increased to obtain the effect of increasing the luminance and the discharge efficiency. Then, at a desired point in time, an erase signal Ep below the voltage for generating plasma is applied to the scan electrode 42 to erase the high frequency discharge. This is because the plasma is turned off due to the loss of energy and the momentum decrease due to the movement of the charges in the discharge space by the erase signal Ep applied to the scan electrode 42 and the coupling or the collision with the wall. This erase signal may be supplied to the address electrode 38 and the scan electrode 42 simultaneously.
    3 illustrates an electrode structure disposed on the lower substrate 36 of the PDP to which the discharge cell shown in FIG. 2 is applied.
    In the lower substrate 36 of the PDP shown in FIG. 3, the scan electrode lines SEL1, SEL2,... And the address electrode lines AEL1, AEL2,... Will be formed. The discharge space of each discharge cell is divided by the partition wall 48 which has a lattice structure.
    4 illustrates a configuration of a PDP driving apparatus to which the PDP is applied according to the present invention, and the PDP driving apparatus illustrated in FIG. 4 is a PDP 52 connected through a low pass filter (LPF) 54. A high pass filter commonly connected to the AC addressing driver 58 for driving the scan electrode lines SEL1 to SELn and the address electrode lines AEL1 to AELm, and the high frequency electrode lines REL1 to RELn. A high frequency driver 60 is connected to the scan electrode lines SEL1 to SELn through the HPF 56 to drive the high frequency electrode lines REL1 to RELn.
    In the PDP driving apparatus shown in FIG. 4, the AC addressing driving unit 58 supplies the scan signals to the scan electrode lines SEL1 to SELn connected through the low pass filters 54, respectively. In addition, the AC addressing driver 58 is divided into odd and even numbers, and supplies a data signal to the address electrode lines AEL1 to AELm connected through the low pass filters 54, respectively, so that the discharge is synchronized with the scan signal. Allow address discharge to occur in the cell. Subsequently, in the discharge cells in which the address discharge has occurred, high frequency discharge is generated by high frequency signals commonly applied to the high frequency electrodes REL1 to RELn commonly connected to the high frequency driving unit 60. In this case, the high frequency driving unit 60 can eliminate the difficulty of implementing a high frequency switching circuit by using a method of continuously supplying a high frequency signal without switching. Here, the scan electrode lines SEL1 to SELn are connected to the ground of the high frequency electrodes REL1 to RELn to serve as counter electrodes. In this case, the high pass filter 56 connected between the high frequency driving unit 60 and the scan electrode lines SEL1 to SELn serves to pass a high frequency signal, and the induced high frequency signal is transferred to the low pass filter 54. Filtering is prevented from affecting the AC addressing driver 58. The AC addressing driver 58 applies an erase voltage to the address electrode lines AEL1 to AELm at a desired time point to stop the high frequency discharge.
    As described above, according to the PDP using the high frequency according to the present invention, the high frequency discharge can occur smoothly between the opposite electrodes having a sufficient interval. In addition, according to the PDP using the high frequency according to the present invention, the upper plate structure is simpler than the lower plate structure, thereby improving visible light transmittance. In addition, according to the PDP using the high frequency according to the present invention, by applying the phosphor only to the partition having a relatively large area, not only does not interfere with the address discharge generated by the scan electrode and the address electrode of the lower plate but also visible light generated by the discharge. This top plate will be able to communicate well.
    Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.
    权利要求:
    Claims (7)
    [1" claim-type="Currently amended] In the plasma display panel having a discharge cell arranged in a matrix form, the discharge cell is
    A high frequency electrode to which a high frequency signal is applied for high frequency discharge;
    A scan electrode to which a scan signal for address discharge is applied;
    An address electrode to which the data signal for address discharge is applied;
    A plasma display panel using a high frequency, characterized in that it comprises a discharge space filled with the discharge gas.
    [2" claim-type="Currently amended] The method of claim 1,
    A first substrate on which the high frequency electrode is formed;
    A second substrate on which the scan electrode and the address electrode are formed;
    And a partition wall formed between the first and second substrates to provide the discharge space.
    [3" claim-type="Currently amended] The method of claim 2,
    A first dielectric layer coated on a first substrate on which the high frequency electrode is formed;
    A second dielectric layer formed between the scan electrode and the address electrode;
    A third dielectric layer formed on the second dielectric layer on which one of the scan electrode and the address electrode is formed;
    And a passivation layer formed over the third dielectric layer.
    [4" claim-type="Currently amended] The method of claim 2,
    And a phosphor coated on a surface of the partition wall.
    [5" claim-type="Currently amended] The method of claim 2,
    The partition wall is a plasma display panel using a high frequency, characterized in that formed in a rectangular shape to provide a discharge space blocked on all sides.
    [6" claim-type="Currently amended] The method of claim 2,
    And the first substrate is an upper substrate on which an image is displayed.
    [7" claim-type="Currently amended] The method of claim 1,
    And an erase voltage for erasing the high frequency discharge is applied to at least one of the scan electrode and the address electrode.
    类似技术:
    公开号 | 公开日 | 专利标题
    Sobel1991|Plasma displays
    US6670754B1|2003-12-30|Gas discharge display and method for producing the same
    JP3470629B2|2003-11-25|Surface discharge type plasma display panel
    US6504519B1|2003-01-07|Plasma display panel and apparatus and method of driving the same
    US20050093444A1|2005-05-05|Plasma display panel
    KR20020096828A|2002-12-31|Method of driving plasma display panel
    US20060186778A1|2006-08-24|Plasma display panel
    US7397187B2|2008-07-08|Plasma display panel with electrode configuration
    US7535437B2|2009-05-19|Structure and driving method of plasma display panel
    CN101727821A|2010-06-09|Plasma display apparatus
    JPH09115450A|1997-05-02|Ac plasam display panel and its driving method
    KR100541205B1|2006-01-11|AC-type plasma display pannel and method for driving same
    JP2005134933A|2005-05-26|Method for driving plasma display panel
    EP1347488A1|2003-09-24|Plasma display device
    US5004950A|1991-04-02|Plasma display panel arranged with auxiliary electrode
    WO2000045412A1|2000-08-03|Plasma display panel excellent in luminous characteristics
    KR100798519B1|2008-01-28|Plasma display device
    TW527576B|2003-04-11|Display panel driving method and discharge type display apparatus
    EP1571642A2|2005-09-07|Driving method for plasma display panel
    Zhang et al.2002|19.4: A Novel AC PDP with Shadow Mask
    JP3832310B2|2006-10-11|Plasma display panel
    WO2004006279A1|2004-01-15|Plasma display panel
    US20030168979A1|2003-09-11|Plasma display panel
    JP4285040B2|2009-06-24|Plasma display panel
    JP2001183999A|2001-07-06|Plasma display panel and plasma display device provided same
    同族专利:
    公开号 | 公开日
    KR100315304B1|2001-11-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1999-03-11|Application filed by 구자홍, 엘지전자 주식회사
    1999-03-11|Priority to KR1019990008060A
    2000-10-16|Publication of KR20000060034A
    2001-11-26|Application granted
    2001-11-26|Publication of KR100315304B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019990008060A|KR100315304B1|1999-03-11|1999-03-11|Plasma Display Panel Using High Frequency|
    [返回顶部]