• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    A display device comprising at least: (a) a plurality of photovoltaic active areas and a plurality of orifices (2), two adjacent photovoltaic active areas (1 ', 1 ") forming an orifice (2); (b) a or a plurality of artificial light sources (3), (c) a plurality of opaque and reflective light concentrators (4) disposed between said light sources (3) and said photovoltaic active areas, characterized in that said concentrators ( 3) are arranged so that the light emitted by the artificial light sources (3) is directed by the light concentrators (4) through the orifices (2).
    公开号:FR3020473A1
    申请号:FR1400984
    申请日:2014-04-25
    公开日:2015-10-30
    发明作者:Badre Kerzabi；Cyril Chappaz；Alain Cenne；Vecchi Sylvain De
    申请人:Sunpartner Technologies SAS；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD OF THE INVENTION The present invention relates to emissive display screens, and more particularly backlit display screens in fixed or portable electronic devices, having photovoltaic cells. integrated in the screen. STATE OF THE ART In the present invention, a display device is called an electronic device provided with a screen that makes it possible to display an image or a light message by an adequate guidance of the light generated by said device. Display screens having backlit image areas are commonly used in portable electronic devices. By "backlit image area" is meant an image area that is located in front of a light source that illuminates it from behind. The "image area" may for example be a pixel, a plurality of pixels or a part of a pixel (for example a liquid crystal pixel), or a filmstrip on which an image has been printed. In a backlit display, a diffuse light source is placed upstream of the pixel plane, in order to improve the contrast of the image, the term "upstream" referring to the optical path of the light emitted by the device. Portable devices generally have a battery power supply, whose autonomy time is a factor of high user comfort. To increase this duration of autonomy, solar cells have been incorporated in some of these portable devices. They produce a part of the current necessary for the operation of said device. Insofar as the space available for disposing photocells on the outer surface of said portable devices is very small, it is desirable to integrate the solar cells in the display screen itself. The state of the art shows a number of examples for such integration. A first approach, described in EP 1,174,756, US 7,206,044, WO 2009/052326, US 2010/284055, WO 2009/065069, US 2010/245731 is to deposit semi-transparent photovoltaic cells. Another approach, described in the documents US 2002/0119592, US 4,795,500 and WO 2009/098459, consists in depositing photovoltaic layers in the form of strips between which the light coming from the pixels passes. All these approaches lead to screens that are either faint, or whose surface area of photovoltaic cells, which is, for a given cell type, proportional to the converted energy, is low. Recently, these backlit display systems with integrated photovoltaic strips on the display side have been the starting point for a significant improvement by the use of lenticular arrays, as described in WO 2012/104503 and WO 2013/054010, able to focus the light coming from the pixels of the backlit screen between the photovoltaic strips and thus increasing, at a constant surface fraction of the photovoltaic bands, the brightness of the screen.
    [0002] Nevertheless, the lenticular networks used in the documents known from the prior art are not the most efficient optical systems for efficiently concentrating the light emitted by the device, that is to say for focusing an incident light beam towards a zone punctuality of space. Moreover, manufacturing tolerances of such a lenticular network, in particular the residual thickness between the lenses and the semi-transparent photovoltaic module, as well as the respective alignment of the transparency zones of the photovoltaic module with respect to the microlenses, are very weak. In addition, the transparent material constituting the lenticular network has a calibrated refractive index which generates costs and process constraints. Finally, the optical glues with refractive indices different from that of the lenticular network, used as adhesives to assemble the lenticular array in the screen cause, as the diopters pass, losses in transmission of the light emitted by the device, as well as Parasitic reflections of the ambient light on the screen. Simultaneous resolution of the aforementioned problems would therefore increase the quality of the displayed images by decreasing the reflections of the ambient light at the surface of the optical system and improving the transmission of the light emitted by the device, while reducing costs. related to the use of multiple optical resins and low dimensional tolerances. The present invention therefore aims to overcome these disadvantages, by proposing the integration of opaque and reflective concentrators in place of the transparent lenticular network in the optical device. OBJECTS OF THE INVENTION The object of the invention concerns a display device, as well as several methods for producing a portion of the device, as defined in the claims which are incorporated herein by reference.
    [0003] The display device according to the invention comprises at least: (a) a plurality of active photovoltaic zones and a plurality of orifices, knowing that two neighboring photovoltaic active zones form an orifice; (b) one or more sources of artificial light; (c) a plurality of opaque and reflective light concentrators disposed between said light sources and said photovoltaic active areas. Said display device is characterized in that said light concentrators are arranged in such a way that the light emitted by the artificial light sources is directed by the light concentrators through the orifices. The plurality of photovoltaic active areas may form a single photovoltaic cell or a set of cells electrically connected in series or in parallel to form a photovoltaic module. It can also be several cells or independent modules. Generically, we call thereafter "photovoltaic module" any of these configurations. The photovoltaic active areas may be active on one or more faces and consist of one or more active materials which may be inorganic or organic, crystalline or amorphous, opaque or semi-transparent. These active materials are advantageously thin layers based on amorphous or microcrystalline silicon, GaAs (gallium arsenide), CdTe (cadmium telluride), CIGS (copper - indium - gallium - selenium), CZTS (copper - zinc - tin - selenium) or based on polymers. They may be p-i-n or p-n junctions, or tandem cells, i.e. comprising two superimposed cells which preferentially absorb a different part of the light spectrum.
    [0004] They can be designed to convert visible light and / or ultraviolet light and / or infrared light into electricity. A light concentrator is an optical concentrator capable of collecting the light of a light beam having different angles of incidence in a zone of the so-called "entrance surface" to guide it towards a smaller surface called "surface of output ", and generally corresponding to the top of the concentrator. The concentration ratio of the light concentrator is then defined as the ratio of the exit area to the entrance surface. Said concentrators may consist of one or more plane, concave or convex, parabolic, semi-cylindrical or cylindro-parabolic surfaces. In the present invention, the light concentrators make it possible to guide the light generated by the display device through the orifices of a photovoltaic module, so as to increase, at a constant surface fraction of photovoltaic active areas, the brightness of said device. Thus, the peaks of the concentrators must be positioned opposite the openings of the photovoltaic module so that most of the light focused by said concentrators is emitted through the photovoltaic active areas by the transparent orifices. According to various embodiments of the device, the surfaces of said concentrators are metallic, for example aluminum, silver or molybdenum, or colored, for example white, or made of carbon-based materials, for example graphene or graphite , and are smooth or polished. As a result, these concentrators favor a specular reflection of the incident light rather than diffuse reflection or absorption, the nature of the reflection closely depending on the quality of said surfaces. Reflection is said to be specular when the incident ray gives rise to a single reflected ray. Ideally, the energy of the incident ray is totally in the reflected ray. Since the size of the defects of the interface is smaller or of the order of magnitude of the wavelength of the light received, these surfaces tend to become perfectly reflective. Advantageously, the specular reflection rate on the surface of the concentrators must be greater than 90% of the incident light.
    [0005] According to an alternative embodiment, the material which constitutes the surface of the concentrators is an electrical conductor which also serves as an electrode for the photovoltaic active areas. Thus, this pooling between the reflective surface of the concentrator and one of the two electrodes of the photovoltaic module makes it possible to reduce the number of layers of the device, and thus to minimize its thickness.
    [0006] According to a certain embodiment of the device according to the invention, said photovoltaic active areas are positioned near the vertices of said light concentrators. This configuration optimizes the amount of light transmitted through the orifices of the photovoltaic module, by limiting the amount of light emitted by the device that could be reflected or absorbed on the photovoltaic active areas. According to another embodiment, said photovoltaic active areas cover and conform to the surface of the light concentrators, that is to say they take the shape of the surface of the concentrators. The advantage of this configuration is to maximize the apparent surface area of the photovoltaic active areas, and thus to potentially maximize the power generation generated by the photovoltaic module. According to a further variant embodiment of the device, said active photovoltaic zones and said concentrators are organized in a continuous or discontinuous network of elementary patterns, delimiting all types of shapes, in particular curved shapes, for example cylindrical, flat shapes, for example polygonal, prismatic or hexagonal. According to the selected embodiments, said artificial light sources can emit white or colored light. These light sources may consist of one or more electroluminescent diodes (LEDs), generally white, located directly opposite the device object of the invention, or on the side of a transparent waveguide in which the light is propagated. It can also be organic or inorganic electroluminescent sources that emit preferentially in part of the visible spectrum, and therefore colored. According to a further alternative embodiment not shown, the concentrators are textured at the surfaces which are in the vicinity of the peaks of said concentrators and which correspond to the orifices. The texturing of the surfaces at the top of said concentrators makes it possible to minimize the phenomena of reflection of light at the interfaces between two optical media of different refractive index, and thus to maximize the quantity of light emitted through said concentrators. In a particular embodiment not shown, the display device according to the invention further comprises a collimation device capable of directing the light emitted by the light sources in a preferred direction. Indeed, all the concentrators have an acceptance cone of the forced incident light, that is to say a limit angle of incidence beyond which the incident light is no longer focused but returned out of the optical system. This acceptance cone depends on the shape of the concentrators and is all the more limited as the concentration ratio, that is to say the ratio of the surface of the luminous flux at the entrance to the surface of the luminous flux at the exit is important. A device for collimating the incident light makes it possible to control the direction and therefore the angle of incidence of the light emitted by the device so that it corresponds advantageously to the acceptance cone, even if small, of the concentrators. The combination of a collimation device with the device according to the invention therefore makes it possible to maximize the concentration rate. At a constant surface fraction of photovoltaic active areas, the quantity of light that is transmitted by the concentrators through the orifices of the photovoltaic module is thus increased. Collimation device is here called an independent optical system that redirects the luminous flux from a point source or an optical guide of surface-structured light (in this case, the collimation device is directly coupled to the guide wave that emits light). In another particular embodiment not shown, the display device according to the invention further comprises one or more color filters. Depending on the display technology, these color filters or pixels, can be associated side by side or stacked, typically by the repetition of three elementary filters red, green and blue, respectively called additive RGB technologies or subtractive CMJ, and known from the skilled person. Additive RGB technology is used, for example, in display devices of the "Liquid Crystal Display" type, while subtractive CMJ technology is implemented in devices using technologies of the "electrowetting" type in English terminology. In another particular embodiment not shown, the display device according to the invention further comprises one or more polarizers and / or electro-optical modulators. They may be, for example, organic polarizers or "wire grid" type, as well as liquid crystal modulators or else "electrowetting" type. In another still particular embodiment not shown, the display device according to the invention further comprises a functional surface, for example anti-reflective, anti-UV or tactile detection. According to a first example of a method of manufacturing a part of the device composed of concentrators and photovoltaic active areas, the procedure is as follows: (a) supplying a transparent plate; (b) structuring said transparent plate by removing or depositing material so as to impart to it a structure which represents the shape of the concentrators; (e) depositing a layer of reflective material on the structured face of said transparent plate; (d) etching the reflective layer at the vertices of the concentrators; (e) independently supplying a semi-transparent photovoltaic module composed of a plurality of photovoltaic active areas and a plurality of orifices, said photovoltaic active areas consisting of a plurality of thin layers deposited on a transparent substrate ; (f) fixing said semi-transparent photovoltaic module with the module consisting of engraved concentrators by precisely aligning the orifices of the photovoltaic module with the tops of the concentrators. In this method of manufacture, the structuring of the transparent plate can be carried out under UV irradiation using rollers or textured buffers which print a network of shapes on a liquid or semi-liquid photosensitive polymer, or by stamping a solid transparent material. The fixing step is performed by welding or gluing with the aid of an optical glue of refractive index advantageously between that of the transparent plate and that of the transparent substrate supplied. These are made of a solid transparent material, such as glass or a PMMA polymer, PET or polycarbonate, and are rigid or flexible.
    [0007] According to a second example of a method of manufacturing a part of the device composed of concentrators and photovoltaic active areas, the procedure is as follows: (a) supplying a transparent plate; (b) structuring said transparent plate by removing or depositing material so as to impart to it a structure which represents the shape of the concentrators; (c) depositing successively on the structured face of said transparent plate several thin conforming constituent layers of the photovoltaic module, starting with a reflective and electrically conductive layer; (d) we successively engrave all the thin layers at the vertices of the concentrators. According to a third example of a method of manufacturing a part of the device composed of concentrators and photovoltaic active areas, the procedure is as follows: (a) supplying a transparent plate; (b) structuring said transparent plate by removing or depositing material so as to impart to it a structure which represents the shape of the concentrators; (c) depositing on the structured face of said transparent plate a planarizing reflective layer which integrally fills said structured face; (d) depositing successively on said planarizing reflective layer at least two of the constituent thin layers of the photovoltaic module; (e) successively etching at least two of the thin layers of the photovoltaic module as well as the reflecting planarization layer at the level of the peaks of the concentrators.
    [0008] In a preferred embodiment, the planarizing reflective layer may be electrically conductive and serve as an electrode for the photovoltaic module. There is then a mutualization of an electrode of the photovoltaic module and the reflective part of the concentrator. Alternatively, it is possible to deposit in addition to the reflective layer several thin layers, one of which serves as a back electrode to the photovoltaic module.
    [0009] According to a fourth example of a method of manufacturing a part of the device composed of concentrators and photovoltaic active areas, the procedure is as follows: (a) supplying a photovoltaic module consisting of a plurality of thin layers deposited in a continuous manner on a transparent substrate (8); (b) depositing a film consisting of a liquid or solid material, advantageously photosensitive or thermally sensitive; (c) structuring said film, for example by means of a mold or a laser, so as to give it a structure which represents the shape of the concentrators; (d) uniformly etching said film so that its local thickness near the vertices of the concentrators is zero; (e) depositing a conformal layer of reflective material on said film; (f) successively etching the reflective layer and at least two of the thin layers of the photovoltaic module at the level of the concentrator peaks. According to a fifth and last example of a method of manufacturing a part of the device composed of concentrators and photovoltaic active areas, the procedure is as follows: (a) supplying a photovoltaic module consisting of a plurality of deposited thin layers of continuously on a transparent substrate (8); (b) depositing a film consisting of a liquid or solid material, advantageously photosensitive or thermally sensitive; (c) structuring said film, for example by means of a mold or a laser, so as to give it a structure which represents the shape of the concentrators; (d) uniformly etching said film so that its local thickness near the vertices of the concentrators is zero; (e) successively etching two thin layers of the photovoltaic module at the vertices of the concentrators; (f) depositing a conformal layer of a transparent dielectric material on said film as well as in the orifices of the photovoltaic module while exposing openings in the dielectric layer at the orifices; (g) depositing a conformal layer of an electrically conductive material and reflecting on said layer so that only certain openings are covered, and that the conductive material is in electrical contact with the transparent electrode of the photovoltaic module at the openings corresponding. In a particular embodiment not shown, the emissive screen disposed on one side of the display device according to the invention can be combined with a reflective screen on the opposite face of said device, in which the reflecting surfaces of the concentrators are used as mirror to reflect ambient light and display information. In such a device, certain elements used for displaying the emissive screen and the reflective screen, such as electro-optical modulators, color filters or polarizers, can be shared. The invention finds its main applications in electronic devices, fixed or portable, rigid or flexible, which comprise a display device according to the invention. The invention is particularly suitable for display screens emissive electronic devices such as mobile phones, watches, tablets, computers, televisions, man-machine interfaces, signs or advertising signs. The invention will be better understood with the aid of its detailed description, in relation to the figures, in which: FIG. 1 schematically shows in cross-section the structure of a display device according to the invention; FIGS. 2a, 2b, 2c and 2d show schematically in cross section objects at different stages of a first method of manufacturing a part of the display device according to the invention; - Figures 3a, 3b and 3c show schematically in cross section of the objects which illustrate different steps of a second method of manufacturing a portion of the display device according to the invention; FIGS. 4a, 4b, 4c and 4d schematically represent, in cross-section, objects which illustrate various steps of a third method of manufacturing a part of the display device according to the invention; FIGS. 5a, 5b, 5c, 5d and 5e are schematically cross-sectional views of objects which illustrate various steps of a third method of manufacturing a part of the display device according to the invention; Figures 6a, 6b, 6c and 6d show schematically in cross section and in top view of the objects which illustrate different steps of a fourth method of manufacturing a part of the display device according to the invention. The figures are not to scale, the relative thicknesses of the components of the device being deliberately exaggerated to better reveal its structure.
    [0010] DETAILED DESCRIPTION Referring to FIG. 1, which corresponds to a schematic sectional view of the display device according to the invention comprising a plurality of photovoltaic active areas 1 and a plurality of orifices 2, two adjacent photovoltaic active areas 1 ' , 1 "forming an orifice 2, an artificial light source 3 and a plurality of opaque and reflective parabolic form concentrators 4 disposed between said light sources 3 and said photovoltaic active areas 1. Said parabolic concentrators 4 are arranged in such a way that the light emitted by the artificial light sources 3 is directed by the light concentrators 4 through the orifices 2.
    [0011] FIGS. 2a, 2b, 2c and 2d schematize in section several objects that illustrate different steps of a first method of manufacturing a part of the display device according to the invention. The first steps consist of supplying a transparent plate 10 and structuring said transparent plate 10 by molding a layer of material deposited on its surface so as to give it the shape of parabolas (FIG. 2a). The next step is to deposit a conformal layer of a reflective material 9 on the structured face of said transparent plate 10 to obtain parabolic concentrators 4 (Figure 2b). The reflective layer 9 is subsequently etched at the vertices 11 of the parabolic concentrators 4 (FIG. 2c). At the same time, a semi-transparent photovoltaic module consisting of a plurality of photovoltaic active areas 1 and a plurality of orifices 2, two adjacent photovoltaic active areas 1,1 'delimiting an orifice 2, is independently supplied. photovoltaic cells 1 consist of a plurality of thin layers 5, 6, 7 deposited on a transparent substrate 8. The layer 7 is a transparent electrode which can be full plate (that is to say present at the orifices as shown in Figure 2d) or structured so that the orifices do not contain the layer 7 (not shown here), while the absorber layer 6 and the metal electrode 5 are opaque. Finally, the semi-transparent photovoltaic module is fixed by gluing with the module constituted by the parabolic concentrators 4 etched by precisely aligning the orifices 2 of the photovoltaic module with the vertices 11 of the parabolic concentrators 4 (FIG. 2d).
    [0012] We now describe a second manufacturing method for producing a portion of the display device shown schematically in Figure 1. The first two steps of this process (Figure 3a) are identical to those described in Figure 2a. Then depositing successively on the structured face of said transparent plate 10 several conforming thin films 5,6,7 constituting the photovoltaic module, starting with a reflective layer and electrically conductive 5 (Figure 3b). The last step consists in successively etching all the thin layers 5, 6, 7 at the vertices 11 of the parabolic concentrators 4 (FIG. 3c).
    [0013] The various steps of a variant of the previously described manufacturing method are illustrated in FIGS. 4a, 4b, 4c and 4d. The first two steps of this process (FIG. 4a) are again identical to those described in FIG. 2a. Then deposited on the structured face of said transparent plate 10 a first reflecting planarizing layer 9 which completely fills said structured face (Figure 4b), then successively two thin layers 6,7 which together with the layer 9, a photovoltaic module. Finally, the thin layers 6, 7 and the reflective layer 9 are etched successively at the level of the peaks 11 of the parabolic concentrators 4. We now describe a fourth manufacturing method making it possible to produce a part of the display device according to the invention. The first step is to supply a photovoltaic module consisting of a plurality of thin films 5,6,7 continuously deposited on a transparent substrate 8 (Figure 5a). Subsequently, a film 12 is deposited which is structured, for example using a mold or a laser, so as to give it forms of negative parabolas (Figure 5b). The next step consists in etching said film 12 uniformly so that its local thickness near the vertices 11 of the future parabolic concentrators 4 is zero (FIG. 5c). Then deposited on said film 12 a conformal layer of a reflective material 9 (Figure 5d). Finally, the reflective layer 9 and at least two of the thin layers 5, 6 of the photovoltaic module are etched successively at the level of the peaks 11 of the parabolic concentrators 4 (FIG. 5e).
    [0014] FIGS. 6a, 6b and 6c schematize in section several objects which illustrate the last three steps of a fifth method of manufacturing a part of the display device according to the invention, knowing that the first three steps of said method are identical to those shown in Figures 5a, 5b and 5c. The step illustrated in FIG. 6a consists in successively etching the two thin layers 5, 6 of the photovoltaic module at the vertices 11 of the parabolic concentrators 4. A thin conformal layer of a transparent dielectric material 13 is then deposited on the film 12. and in the orifices 2 of the photovoltaic module while leaving openings 14 in the layer 13 at said openings 2 (Figure 6b). The last step is illustrated both in FIGS. 6d (top view) and 6c (sectional view along the plane shown by the dotted lines in FIG. 6d). It consists in depositing a conformal layer of an electrically conductive and reflecting material 9 on said layer 13 so that only certain openings 2 are covered, and that the material 9 is in electrical contact with the transparent electrode 7 of the photovoltaic module at corresponding openings 14 level. This layer 9 makes it possible both to form the parabolic concentrators 4 and to transport the electric charges collected by the transparent electrode 7 into the photovoltaic active areas 1, while minimizing the visibility of this opaque layer 9 at the level of the orifices 2.
    [0015] Advantages of the invention It follows from the above that the invention achieves the goals set. It describes an integrated photovoltaic cell electronic display device comprising opaque and reflective optical elements able to efficiently concentrate the light emitted by the light sources of the device through the transparency zones of the photovoltaic module. Compared with the state of the art, the device that is the subject of the invention has the advantage of increasing the quality of the images displayed, by reducing the reflections of the ambient light at the surface of the optical system and by improving the transmission of the light emitted by the device with a surface fraction of constant photovoltaic areas. The device that is the subject of the invention also makes it possible to reduce manufacturing costs by pooling certain steps in the production process and improving dimensional tolerances.
    [0016] List of marks used in the figures: 1 Photovoltaic active area 7 Transparent electrode 2 Orifice 8 Transparent substrate 3 Light source 9 Reflective layer 4 Light concentrator 10 Transparent plate Metal electrode 11 Top of the concentrator 6 Absorber 12 Film 13 Transparent dielectric material 14 Aperture 5
    权利要求:
    Claims (14)
    [0001]
    CLAIMS1 - Display device comprising at least: (a) a plurality of photovoltaic active areas (1) and a plurality of orifices (2), two adjacent photovoltaic active areas (1 ', 1 ") forming an orifice (2) (b) one or more artificial light sources (3); (c) a plurality of opaque and reflective light concentrators (4) disposed between said light sources (3) and said photovoltaic active areas (1); characterized in that said light concentrators (4) are arranged in such a way that the light emitted by the artificial light sources (3) is directed by the light concentrators (4) through the orifices (2).
    [0002]
    2 - Display device according to claim 1, characterized in that said concentrators (4) consist of one or more flat surfaces, concave or convex, parabolic, semi-cylindrical or cylindro-parabolic.
    [0003]
    3 - Display device according to any one of the preceding claims, characterized in that the surfaces of said concentrators (4) are metallic, for example aluminum, silver or molybdenum, or colored, for example white, or made of carbon-based materials, for example graphene or graphite, and that they are smooth or polished.
    [0004]
    4 - Display device according to claims 1 or 2, characterized in that the material which constitutes the surface of the concentrators (4) is an electrical conductor which also serves as an electrode to the photovoltaic active areas (1).
    [0005]
    5 - Display device according to any one of the preceding claims, characterized in that said photovoltaic active areas (1) are positioned in the vicinity of the vertices of said light concentrators.
    [0006]
    6 - A display device according to any one of claims 1 to 4, characterized in that said photovoltaic active areas (1) overlap and are of the same shape as the surface of the light concentrators.
    [0007]
    7 - Display device according to any one of the preceding claims, characterized in that said photovoltaic active areas (1) and said concentrators (4) are organized in a continuous or discontinuous pattern of elementary patterns (10), delimiting all types shapes, in particular curved shapes, for example cylindrical, flat shapes, for example polygonal, prismatic or hexagonal.
    [0008]
    8 - Display device according to any one of the preceding claims, characterized in that said artificial light sources (3) emit a white or colored light.
    [0009]
    9 - Display device according to any one of the preceding claims, characterized in that said concentrators (4) are textured at the surfaces which are in the vicinity of the vertices (11) of said concentrators (4) and which correspond to the orifices ( 2).
    [0010]
    10 - Display device according to any one of the preceding claims, characterized in that it further comprises a collimation device adapted to direct the light emitted by the light sources (3) in a preferred direction.
    [0011]
    11 - Display device according to any one of the preceding claims, characterized in that it further comprises one or more color filters.
    [0012]
    12 - Display device according to any one of the preceding claims, characterized in that it further comprises one or more polarizers and / or electro-optical modulators.
    [0013]
    13 - Display device according to any one of the preceding claims, characterized in that it further comprises a functional surface, for example anti-reflective, anti-UV or tactile detection.
    [0014]
    14 - A method of manufacturing a portion of the display device according to any one of claims 1 to 8 composed of concentrators (4) and photovoltaic active areas (1), characterized in that it comprises successively steps consisting of a: (a) supplying a transparent plate (10); (b) structuring said transparent plate (10) by removing or depositing material to provide a structure that represents the shape of the concentrators (4); (g) depositing a conformal layer of reflective material (9) on the structured face of said transparent plate (10); (h) etching the reflective layer (9) at the vertices (11) of the concentrators (4); (c) independently supplying a semi-transparent photovoltaic module composed of a plurality of photovoltaic active areas (1) and a plurality of orifices (2), said photovoltaic active areas (1) being composed of a plurality thin layers (5, 6, 7) deposited on a transparent substrate (8); (d) fixing said semi-transparent photovoltaic module with the module constituted by the concentrators (4) etched by precisely aligning the orifices (2) of the photovoltaic module with the vertices (11) of the concentrators (4). - A method of manufacturing a portion of the display device according to any one of claims 1 to 8 composed of concentrators (4) and photovoltaic active areas (1), characterized in that it comprises successively steps consisting of a: (a) supplying a transparent plate (10); (b) structuring said transparent plate (10) by removing or depositing material to provide a structure that represents the shape of the concentrators (4); (c) depositing successively on the structured face of said transparent plate (10) a plurality of conformal thin layers (5, 6, 7) constituting the photovoltaic module, starting with a reflective and electrically conductive layer (5); (d) successively etching all the thin layers (5, 6, 7) at the vertices (11) of the concentrators (4). 16 - A method of manufacturing a portion of the display device according to any one of claims 1 to 8 composed of concentrators (4) and photovoltaic active areas (1), characterized in that it comprises successively steps consisting of a: (a) supplying a transparent plate (10); (b) structuring said transparent plate (10) by removing or depositing material so as to give it a structure which represents the shape of the concentrators (4), (c) depositing on the structured face of said transparent plate (10) a layer reflective (9) planarization which completely fills said structured face; (d) depositing successively on said non-etched planarization reflective layer (9) at least two thin layers (6, 7) constituting the photovoltaic module; (e) successively etching at least two of the thin layers (6, 7) of the photovoltaic module as well as the planarization reflective layer (9) at the vertices (11) of the concentrators (4). 17 - A method of manufacturing a portion of the display device according to any one of claims 1 to 8 composed of concentrators (4) and photovoltaic active areas (1), characterized in that it comprises successively steps consisting of a: (a) supplying a photovoltaic module consisting of a plurality of thin layers (5, 6, 7) deposited continuously on a transparent substrate (8); (1)) depositing a film (12) made of a liquid or solid material, advantageously photosensitive or thermosensitive; (c) structuring said film (12), for example by means of a mold or a laser, so as to give it a structure which represents the shape of the concentrators (4); (d) etching said film (12) uniformly so that its local thickness in the vicinity of the vertices (11) of the concentrators (4) is zero; (e) depositing a conformal layer of reflective material (9) on said film (12); (f) successively etching the reflecting layer (9) and at least two of the thin layers (5,6) of the photovoltaic module at the vertices (11) of the concentrators (4). 18 - A method of manufacturing a portion of the display device according to any one of claims 1 to 8 composed of concentrators (4) and photovoltaic active areas (1), characterized in that it comprises steps of (a) supplying a photovoltaic module consisting of a plurality of thin layers (5, 6, 7) deposited continuously on a transparent substrate (8); (b) depositing a film (12) made of a liquid or solid material, advantageously photosensitive or thermally sensitive, (c) structuring said film (12), for example by means of a mold or a laser, of to give it a structure that represents the shape of the concentrators (4); (d) etching said film (12) uniformly so that its local thickness in the vicinity of the vertices (11) of the concentrators (4) is zero; (e) successively etching the two thin layers (5, 6) of the photovoltaic module at the vertices (11) of the concentrators (4); (f) depositing a conformal layer of a transparent dielectric material (13) on said film (12) as well as in the openings (2) of the photovoltaic module while exposing openings (14) in the layer (13) at the orifices (2); (g) depositing a conformal layer of an electrically conductive and reflective material (9) on said layer (13) so that only certain openings are covered, and the material (9) is in electrical contact with the transparent electrode (7) of the photovoltaic module at the corresponding openings (14). 19 - An electronic device, fixed or portable, rigid or flexible, characterized in that it comprises a display device according to any one of claims 1 to 13.
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    同族专利:
    公开号 | 公开日
    US20150311373A1|2015-10-29|
    CN106461924A|2017-02-22|
    WO2015162343A1|2015-10-29|
    JP2017515168A|2017-06-08|
    US9711673B2|2017-07-18|
    FR3020473B1|2018-01-12|
    WO2015162343A8|2016-11-10|
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    法律状态:
    2015-03-19| PLFP| Fee payment|Year of fee payment: 2 |
    2015-10-30| PLSC| Publication of the preliminary search report|Effective date: 20151030 |
    2016-03-23| PLFP| Fee payment|Year of fee payment: 3 |
    2016-11-11| CA| Change of address|Effective date: 20161011 |
    2017-03-22| PLFP| Fee payment|Year of fee payment: 4 |
    2018-03-22| PLFP| Fee payment|Year of fee payment: 5 |
    2020-03-12| PLFP| Fee payment|Year of fee payment: 7 |
    2021-03-10| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1400984A|FR3020473B1|2014-04-25|2014-04-25|INTEGRATED PHOTOVOLTAIC CELL DISPLAY DEVICE WITH IMPROVED BRIGHTNESS AND REFLECTIVITY|
    FR1400984|2014-04-25|FR1400984A| FR3020473B1|2014-04-25|2014-04-25|INTEGRATED PHOTOVOLTAIC CELL DISPLAY DEVICE WITH IMPROVED BRIGHTNESS AND REFLECTIVITY|
    US14/530,402| US9711673B2|2014-04-25|2014-10-31|Display device with photovoltaic cells integrated into the screen and improved screen luminosity and reflectivity|
    JP2017507086A| JP2017515168A|2014-04-25|2015-04-23|Display device having an integrated photovoltaic cell with improved brightness and reflectivity|
    CN201580034163.4A| CN106461924A|2014-04-25|2015-04-23|Display device with integrated photovoltaic cells with improved brightness and reflectivity|
    PCT/FR2015/000083| WO2015162343A1|2014-04-25|2015-05-23|Display device with integrated photovoltaic cells with improved brightness and reflectivity|
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