WO2016197490A1 - 触摸屏及触摸显示装置 - Google Patents

触摸屏及触摸显示装置 Download PDF

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Publication number
WO2016197490A1
WO2016197490A1 PCT/CN2015/091165 CN2015091165W WO2016197490A1 WO 2016197490 A1 WO2016197490 A1 WO 2016197490A1 CN 2015091165 W CN2015091165 W CN 2015091165W WO 2016197490 A1 WO2016197490 A1 WO 2016197490A1
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Prior art keywords
layer
thin film
touch
film photovoltaic
graphene layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/091165
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English (en)
French (fr)
Inventor
曾亭
胡明
谢涛峰
杨忠正
丁贤林
朱孝菲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Hefei Xinsheng Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Hefei Xinsheng Optoelectronics Technology Co Ltd
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Application filed by BOE Technology Group Co Ltd, Hefei Xinsheng Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to EP15888721.6A priority Critical patent/EP3309661B1/en
Priority to US15/127,100 priority patent/US10007372B2/en
Publication of WO2016197490A1 publication Critical patent/WO2016197490A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

Definitions

  • At least one embodiment of the present invention is directed to a touch screen and a touch display device.
  • Touch screens include resistive, capacitive, and infrared optics.
  • the resistive touch screen determines the touch point by pressing to change the resistance between the two layers of electrodes or to conduct each other.
  • a capacitive touch screen determines a touch point by a change in capacitance caused by, for example, a human touch.
  • the infrared optical touch screen determines the touch point by, for example, blocking the infrared light reception by a finger.
  • Capacitive touch screens have been widely used in the field of electronic products due to their high transparency, durability and multi-touch.
  • At least one embodiment of the present invention provides a touch screen and a touch display device, in which a transparent thin film photovoltaic cell disposed in a touch screen can charge an electronic product and prolong its use time.
  • At least one embodiment of the present invention provides a touch screen including a base substrate and a touch electrode layer and a transparent thin film photovoltaic cell disposed on the base substrate, the touch electrode layer and the The transparent thin film photovoltaic cells are stacked on each other and are located on the same side of the base substrate, and a transparent insulating layer is disposed between the touch electrode layer and the transparent thin film photovoltaic cell; or the touch electrode layer and the transparent layer Thin film photovoltaic cells are respectively disposed on both sides of the base substrate; the transparent thin film photovoltaic cell includes an n-type doped graphene layer and a p-type doped graphene layer.
  • the transparent thin film photovoltaic cell further includes a graphene layer, the graphene layer being located in the n-type doped graphene layer and the p-type doped graphite Between the layers of the ene.
  • the touch screen further includes a control circuit, a first lead and a second lead; the n-type doped graphene layer and the p-type doped graphene a layer is connected to the control circuit via the first lead and the second lead, respectively, the first lead and the n-doped graphene layer are disposed in the same layer, the second lead and the p The doped graphene layer is disposed in the same layer, and the first lead and the second lead are staggered from each other.
  • the touch screen further includes a control circuit, a first electrode, and a second electrode; the n-type doped graphene layer and the p-type doped graphene A layer is coupled to the control circuit via the first electrode and the second electrode, respectively.
  • the first electrode and the second electrode are disposed at the same interval.
  • the touch screen further includes a rechargeable battery; and the control circuit is configured to control whether the transparent thin film photovoltaic battery charges the rechargeable battery.
  • control circuit includes a light sensing unit, and the light sensing unit is configured to detect the intensity of the light to control whether the rechargeable battery is charged.
  • the touch electrode layer includes a plurality of touch driving electrodes and/or a plurality of touch sensing electrodes.
  • the transparent insulating layer includes any one of a transparent optical adhesive layer, a SiNxOy layer, an SiO 2 layer, and an aluminum oxide layer.
  • the base substrate and the touch in a case where the touch electrode layer and the transparent thin film photovoltaic cell are located on the same side of the base substrate, the base substrate and the touch
  • the transparent thin film photovoltaic cell is disposed between the electrode layers, or the touch electrode layer is disposed between the base substrate and the transparent thin film photovoltaic cell.
  • the substrate includes at least a first area and a second area, the second area is adjacent to and surrounding the first area, and the first area is a touch a region, the second region is a peripheral region, the transparent thin film photovoltaic cell is disposed in the first region, or the transparent thin film photovoltaic cell is disposed in a portion of the first region.
  • the transparent thin film photovoltaic cell in a case where the transparent thin film photovoltaic cell is disposed in a portion of the first region, the transparent thin film photovoltaic cell includes a plurality of sub-transparent thin film photovoltaic cells.
  • At least one embodiment of the present invention also provides a touch display device including any of the touch screens described above.
  • FIG. 1 is a partial cross-sectional view of a touch screen according to an embodiment of the present invention.
  • FIG. 2 is a partial cross-sectional view of another touch screen according to an embodiment of the present invention.
  • FIG. 3 is a schematic plan view of a touch electrode layer according to an embodiment of the invention.
  • FIG. 4a is a schematic plan view of a thin film photovoltaic cell in a touch screen according to an embodiment of the invention.
  • FIG. 4b is a schematic plan view of another thin film photovoltaic cell in a touch screen according to an embodiment of the invention.
  • FIG. 5 is a schematic plan view of another thin film photovoltaic cell in a touch screen according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a control flow of a touch screen according to an embodiment of the present invention.
  • FIG. 7a is a partial cross-sectional view showing another liquid crystal touch panel according to an embodiment of the present invention.
  • FIG. 7b is a partial cross-sectional view of another liquid crystal touch screen according to an embodiment of the present invention.
  • FIG. 8 is a partial cross-sectional view showing another liquid crystal touch panel according to an embodiment of the present invention.
  • FIG. 9 is a partial cross-sectional view showing another liquid crystal touch panel according to an embodiment of the present invention.
  • FIG. 10 is a partial cross-sectional view of an OLED touch screen according to an embodiment of the present invention.
  • FIG. 11 is a partial cross-sectional view showing another OLED touch screen according to an embodiment of the present invention.
  • FIG. 12 is a partial cross-sectional view showing another OLED display screen according to an embodiment of the present invention.
  • FIG. 13 is a partial cross-sectional view showing another liquid crystal display according to an embodiment of the present invention.
  • Embodiments of the present invention utilize the transparent film photovoltaic cell transparent feature to integrate it into the touch screen, so that the touch screen can continuously replenish electric energy through the transparent thin film photovoltaic cell in an environment with illumination (for example, backlight or sunlight). To extend their use time. Further, since the transparent thin film photovoltaic cell has a high light transmittance and a small thickness, it does not have a large influence on the display and size of the touch screen.
  • illumination for example, backlight or sunlight
  • At least one embodiment of the present invention provides a touch screen including a base substrate and a touch electrode layer and a transparent thin film photovoltaic cell disposed on the base substrate, a touch electrode layer and a transparent thin film
  • the film photovoltaic cells are stacked on each other and located on the same side of the substrate, and a transparent insulating layer is disposed between the touch electrode layer and the transparent thin film photovoltaic cell; or the touch electrode layer and the transparent thin film photovoltaic cell are respectively disposed on both sides of the substrate
  • the transparent thin film photovoltaic cell includes a stacked n-type doped graphene layer and a p-type doped graphene layer.
  • the touch electrode layer includes a plurality of touch driving electrodes and/or a plurality of touch sensing electrodes.
  • a touch screen provided by an embodiment of the present invention includes a base substrate 20 , a touch electrode layer 30 disposed on the base substrate, and a transparent insulating layer 40 disposed on the touch electrode layer 30 .
  • the n-type doped graphene layer 51 and the p-type doped graphene layer 52 constitute a transparent thin film photovoltaic cell 50.
  • the touch screen may be overlaid on the display module 10, and the ambient light and/or the light emitted by the display module 10 passes through a transparent film composed of an n-type doped graphene layer 51 and a p-type doped graphene layer 52.
  • the transparent thin film photovoltaic cell 50 can generate a current to power and/or charge the touch screen, or to charge a secondary battery included in the entire device (eg, a cell phone, a tablet, etc.).
  • the display module 10 can be a liquid crystal display module or an OLED display module.
  • the touch screen includes a base substrate 120, a plurality of touch sensing electrodes 131 and a plurality of touch driving electrodes 132 disposed on the base substrate, and a plurality of touch sensing electrodes 131 and a plurality of contacts.
  • the touch screen provided in this embodiment may be a One Glass Solution (OGS) touch screen.
  • OGS One Glass Solution
  • the transparent insulating layer 140 may be a transparent optical adhesive layer or an inorganic insulating layer, but is not limited thereto.
  • the inorganic insulating layer includes any one of a SiNxOy layer, an SiO 2 layer, and an aluminum oxide layer, but is not limited thereto, and any transparent film that can function as an insulating layer may be used.
  • the transparent optical adhesive layer may be, for example, an OC photoresist layer (transparent photoresist layer).
  • the n-doped graphene layer can be prepared using, but not limited to, the following steps:
  • Step (1) forming a layer of graphene on the metal substrate.
  • the graphene layer may be formed by chemical vapor deposition, but is not limited thereto.
  • the metal substrate can be copper foil or nickel foil, but Not limited to this.
  • Step (2) doping the graphene layer formed on the metal substrate to form an n-type doped graphene layer.
  • nitrogen doping may be performed to form an n-type doped graphene layer, but is not limited thereto.
  • Step (3) forming a polymethyl methacrylate (PMMA) film on the n-type doped graphene layer formed on the metal substrate.
  • the step may be as follows: an organic solvent solution containing polymethyl methacrylate (PMMA) may be dispensed on the surface of the n-doped graphene layer formed on the substrate, and an organic solvent solution containing PMMA may be used using a homomixer. The graphene film is uniformly coated, and then the metal substrate is placed on a heating table, and the solvent is dried to obtain a PMMA film.
  • PMMA polymethyl methacrylate
  • Step (4) removing the metal substrate.
  • an etching solution can be used to etch the substrate.
  • the etching solution may be a FeCl 3 solution, a Fe(NO 3 ) 3 solution, or a Fe 2 (SO 4 ) 3 solution.
  • the concentration of the etching solution may range from 0.5 to 2 mol/L.
  • Step (5) transferring the n-type doped graphene layer on the PMMA film onto the substrate. Since graphene has a strong physical adsorption capacity, it can be adsorbed onto a substrate.
  • Step (6) removing the PMMA film.
  • the PMMA film may be dissolved using a solvent such as acetone.
  • the PMMA film can also be removed by annealing.
  • the n-doped graphene layer preparation process may further include the step (7) of forming a desired pattern by a photolithography process.
  • the step (7) may be performed after the above step (1) and before the step (3), but is not limited thereto.
  • the step (7) may be performed after the above step (1), before the step (2), or after the step (2) and before the step (3), but is not limited thereto.
  • the p-doped graphene layer can be prepared using, but not limited to, the following steps:
  • Step (1) forming a layer of graphene on the metal substrate.
  • the graphene layer may be formed by chemical vapor deposition, but is not limited thereto.
  • the metal substrate may be a copper foil or a nickel foil, but is not limited thereto.
  • Step (2) doping the graphene layer formed on the metal substrate to form a p-type doped graphene layer.
  • oxygen doping or boron doping may be performed to form a p-type doped graphene layer, but is not limited thereto.
  • Step (3) forming a polymethyl methacrylate (PMMA) film on the p-type doped graphene layer formed on the metal substrate.
  • the step may be as follows: a polymethyl methacrylate (PMMA)-containing organic solvent solution may be dispensed on the surface of the p-type doped graphene layer formed on the substrate, and a PMMA-containing organic solvent solution may be used using a homogenizer. Uniformly coating the graphene film and then metal-based The bottom is placed on a heating table, and the solvent is dried to obtain a PMMA film.
  • PMMA polymethyl methacrylate
  • Step (4) removing the metal substrate.
  • an etching solution can be used to etch the substrate.
  • the etching solution may be a FeCl 3 solution, a Fe(NO 3 ) 3 solution, or a Fe 2 (SO 4 ) 3 solution.
  • the etching solution may have a concentration ranging from 0.5 to 2 mol/L.
  • Step (5) transferring the p-type doped graphene layer on the PMMA film onto the substrate. Since graphene has a strong physical adsorption capacity, it can be adsorbed onto a substrate.
  • Step (6) removing the PMMA film.
  • the PMMA film may be dissolved using a solvent such as acetone.
  • the PMMA film can also be removed by annealing.
  • the p-doped graphene layer preparation process may further include the step (7) of forming a desired pattern by a photolithography process.
  • the step (7) may be performed after the above step (1) and before the step (3), but is not limited thereto.
  • the step (7) may be performed after the above step (1), before the step (2), or after the step (2) and before the step (3), but is not limited thereto.
  • the graphene layer may be transferred onto a base substrate, and then doped to form an n-type doped graphene layer.
  • the graphene layer may be transferred onto a base substrate and then doped to form a p-type doped graphene layer.
  • nitrogen doping of the graphene layer can anneal the graphene layer in ammonia gas at a high temperature to form an n-type doped graphene layer.
  • the temperature of the high temperature annealing may be 500 ° C ⁇ 50 ° C.
  • oxygen doping the graphene layer may anneal the graphene layer under an oxygen atmosphere to form a p-type doped graphene layer.
  • the temperature of the low temperature annealing may be 200 ° C ⁇ 50 ° C.
  • the n-doped graphene layer can be a nitrogen (N) doped graphene layer.
  • the p-type doped graphene layer may be an oxygen (O) doped graphene layer or a boron (P) doped graphene layer.
  • the n-type doped graphene layer and the p-type doped graphene layer may be a single layer, a double layer, or a triple layer layer structure.
  • a pn junction is formed between the n-type doped graphene layer 151 and the p-type doped graphene layer 152.
  • the touch screen can be overlaid on the display module 110.
  • the transparent thin film photovoltaic cell 150 can generate current for powering the touch screen and/or for charging.
  • the display module can be a liquid crystal display module or an OLED display module.
  • the transparent thin film photovoltaic cell 150 can be interchanged with the position of the touch electrode layer 30 composed of the touch sensing electrode 131 and the touch driving electrode 132. That is, the touch screen includes a base substrate 120, an n-type doped graphene layer 151 disposed on the base substrate, a p-type doped graphene layer 152 disposed on the n-type doped graphene layer 151, and a setting A transparent insulating layer 140 on the p-type doped graphene layer 152, and a touch electrode layer 30 disposed on the transparent insulating layer 140.
  • the positions of the n-type doped graphene layer 151 and the p-type doped graphene layer 152 in the embodiments of the present invention are interchangeable. That is, the p-type doped graphene layer 152 is closer to the base substrate 120 than the n-type doped graphene layer 151.
  • the transparent thin film photovoltaic cell 150 can be formed thereon by using the insulating property of the transparent optical adhesive layer on the touch screen, without separately forming a transparent insulating layer. Save material, reduce manufacturing process steps and reduce costs. In addition, such a structure has a small thickness relative to other touch screens, does not become cumbersome due to the added transparent thin film photovoltaic cell 150, and has a good market prospect in a market environment where thinness and thinness are pursued.
  • a plurality of touch sensing electrodes 131 and a plurality of touch driving electrodes 132 may be formed on the base substrate in the same layer.
  • it is formed of the same transparent conductive film.
  • one touch driving electrode 132 corresponds to four touch sensing electrodes 131; four touch sensing electrodes 131 may also be disposed on the other side of the touch driving electrode 132 to form a touch driving electrode 132.
  • the structure of eight touch sensing electrodes 131 can be arranged in an array in a touch area as a basic touch unit.
  • the structure of the touch electrode layer is not specifically limited herein.
  • the touch driving electrode 132 and the touch sensing electrode 131 are interchangeable.
  • a finger touch causes a change in capacitance between the touch driving electrode (Tx) and the touch sensing electrode (Rx), by detecting a signal output caused by coupling the touch driving signal on the touch sensing electrode (Rx), This can determine the touch position. Touch can be implemented in this way.
  • touch sensing electrode 131 and the touch driving electrode 132 in this embodiment are not limited to the above structure.
  • a bridge structure can also be employed.
  • the base substrate includes at least a first region 171 and a second region 172 that abut and surround the first region 171.
  • the first area 171 is a touch area
  • the second area 172 is a peripheral area.
  • the transparent thin film photovoltaic cell 150 can be disposed entirely within the first region 171.
  • the n-type doped graphene layer and the p-type doped graphene layer are connected to the control circuit 191 via the first lead 161 and the second lead 162, respectively.
  • the transparent thin film photovoltaic cell 150 includes a plurality of sub-transparent thin film photovoltaic cells 1501.
  • each sub-transparent thin film photovoltaic cell is strip-shaped.
  • a plurality of sub-transparent thin film photovoltaic cells are disposed within the first region 171 with spacing between adjacent sub-transparent thin film photovoltaic cells.
  • the n-type doped graphene layer and the p-type doped graphene layer in each of the sub-transparent thin film photovoltaic cells may be connected to the control circuit 191 via the first lead 161 and the second lead 162, respectively.
  • the control circuit 191 can also be replaced with a driver IC or driver circuit 194.
  • the n-type doped graphene layer and the p-type doped graphene layer in each of the sub-transparent thin film photovoltaic cells are connected to the driving IC or the driving circuit 194 via the first lead 161 and the second lead 162, respectively.
  • first lead and the second lead are both taken as an example, and the first lead and the second lead may also be multiple.
  • an n-type doped graphene layer in a transparent thin film photovoltaic cell or a sub-transparent thin film photovoltaic cell is connected to a driver IC or driver circuit 194 via a plurality of first leads 161.
  • a p-type doped graphene layer in a transparent thin film photovoltaic cell or a sub-transparent thin film photovoltaic cell is connected to a driver IC or driver circuit 194 via a plurality of second leads 162, respectively.
  • first lead 161 and the n-type doped graphene layer are disposed in the same layer (for example, may be formed by the same patterning process), and the second lead 162 and the p-type doped graphene layer are disposed in the same layer (for example, The same composition process is formed).
  • the first lead 161 and the second lead 162 are shifted from each other.
  • the mutual offset in the present embodiment means, for example, that the projections on the base substrate do not overlap.
  • the fact that the first lead and the second lead are offset from each other means, for example, that the projections of the first lead and the second lead on the base substrate do not overlap.
  • the first lead 161 and the second lead 162 may be formed using a photolithography process. For example, when sufficient light intensity is applied to the transparent thin film photovoltaic cell 150, the current generated by each of the sub-transparent photovoltaic thin film cells 1501 can be directly connected to the driving IC via the first lead 161 and the second lead 162, respectively. Thereby, the use time of the touch screen can be extended.
  • the shape of the sub-transparent thin film photovoltaic cell 1501 is not limited to a strip shape, and may be other shapes other than strips, such as a comb shape, a wave shape, a triangle shape, a trapezoid shape, and the like.
  • the coverage and ratio thereof can be adjusted according to the aperture ratio actually required. For example, when a higher aperture ratio is required, a larger spacing can be placed between the sub-transparent thin film photovoltaic cells 1501. Sub-transparent thin film photovoltaic power when the aperture ratio is sufficient A smaller spacing can be set between pools 1501.
  • the touch screen may further include a first electrode 163 and a second electrode 164.
  • the n-type doped graphene layer of the transparent thin film photovoltaic cell 150 is connected to the control circuit 191 via the first electrode 163.
  • the p-doped graphene layer of the transparent thin film photovoltaic cell 150 is connected to the control circuit 191 via the second electrode 164.
  • the first electrode 163 and the second electrode 164 may be disposed at the same interval.
  • the material of the first electrode 163 and the second electrode 164 may be metal.
  • the interval setting in the present embodiment means, for example, an interval, for example, that the projection on the base substrate does not overlap.
  • the first electrode and the second electrode may be spaced apart, for example, to mean that the first electrode and the second electrode have a space, and the projections of the first electrode and the second electrode on the substrate do not overlap.
  • the following embodiments can be the same.
  • “same layer” refers to a layer structure formed by forming a film layer for forming a specific pattern by the same film forming process, and then forming the pattern by one patterning process using the same mask.
  • a patterning process may include multiple exposure, development, or etching processes, and the particular pattern in the resulting layer structure may be continuous or discontinuous, and these particular patterns may also be at different heights. Or have different thicknesses.
  • the patterning or patterning process may include only a photolithography process, or a photolithography process and an etching step, or may include other processes for forming a predetermined pattern, such as printing, inkjet, and the like.
  • the photolithography process refers to a process including film formation, exposure, development, and the like, and forms a pattern by using a photoresist, a mask, an exposure machine, or the like.
  • the corresponding patterning process can be selected in accordance with the structure formed in the embodiments of the present invention.
  • the touch screen can also include a rechargeable battery 193.
  • Control circuit 191 can be used to control whether transparent thin film photovoltaic cell 150 is charging rechargeable battery 193.
  • control circuit 191 may further include a light sensing unit 192 for detecting the intensity of the light to control whether or not the rechargeable battery 193 is charged.
  • control flow can be as follows.
  • Transparent thin film photovoltaic cells generate electricity when there is sufficient intensity of illumination.
  • the control circuit detects if the touch screen is working. If the touch screen is working, the control circuit controls the transparent thin film photovoltaic cell to not charge the rechargeable battery. If the touch screen does not work, the control circuit continues to detect if the rechargeable battery is fully charged. If the rechargeable battery is not fully charged, the control circuit controls the transparent photovoltaic cell Charge the rechargeable battery.
  • the touch screen provided by at least one embodiment of the present invention can charge the rechargeable battery to store the electrical energy when the touch screen is not working when there is sufficient illumination. Thereby, the use time of the touch screen is greatly extended, and the number of times of external power supply charging is reduced.
  • control flow of the touch screen provided by the embodiment of the present invention is not limited thereto.
  • the rechargeable battery can also be charged while the touch screen is in operation. In this way, the effect of long-lasting battery life can be achieved, and even a thin film photovoltaic battery can be used to charge the rechargeable battery without the effect of external power supply charging. If the transparent thin film photovoltaic cell is capable of generating sufficient current, it can also be directly connected to the control circuit to control the operation of the touch screen.
  • the touch panel includes a first substrate 210, a second substrate 220, a liquid crystal layer 211 disposed between the first substrate 210 and the second substrate 220, and a first substrate 220 disposed opposite to the liquid crystal layer 211.
  • the plurality of touch sensing electrodes 231 and the plurality of touch driving electrodes 232, the transparent insulating layer 240 disposed on the plurality of touch sensing electrodes 231 and the plurality of touch driving electrodes 232, and the transparent insulating layer 240 are disposed on the transparent insulating layer 240.
  • a cap plate 280 may be disposed on the n-type doped graphene layer 251.
  • the material of the transparent insulating layer 240 can be referred to the description of the transparent insulating layer in the first embodiment, and details are not described herein again.
  • the n-type doped graphene layer 251 and the p-type doped graphene layer 252 can be prepared by the preparation method described in the first embodiment.
  • the second substrate in this embodiment is the substrate substrate in the first embodiment.
  • the graphene layer can be prepared using, but not limited to, the following steps:
  • Step (1) forming a layer of graphene on the metal substrate.
  • the graphene layer may be formed by chemical vapor deposition, but is not limited thereto.
  • the metal substrate may be a copper foil or a nickel foil, but is not limited thereto.
  • Step (2) forming a polymethyl methacrylate (PMMA) film on the graphene layer formed on the metal substrate.
  • the step may be as follows: an organic solvent solution containing polymethyl methacrylate (PMMA) may be dispensed on the surface of the n-doped graphene layer formed on the substrate, using a homogenizer, The organic solvent solution containing PMMA is uniformly coated with a graphene film, and then the metal substrate is placed on a heating table, and the solvent is dried to obtain a PMMA film.
  • PMMA polymethyl methacrylate
  • Step (3) removing the metal substrate.
  • an etching solution can be used to etch the substrate.
  • the etching solution may be a FeCl 3 solution, a Fe(NO 3 ) 3 solution, or a Fe 2 (SO 4 ) 3 solution.
  • the etching solution may have a concentration ranging from 0.5 to 2 mol/L.
  • step (4) the graphene layer on the PMMA film is transferred onto the second substrate (substrate substrate).
  • Graphene has a strong physical adsorption capacity and thus can be adsorbed onto a second substrate (substrate substrate).
  • Step (5) removing the PMMA film.
  • the PMMA film may be dissolved using a solvent such as acetone.
  • the PMMA film can also be removed by annealing.
  • the graphene layer preparation process may further include the step (6) of forming a desired pattern by a photolithography process.
  • the step (7) may be performed after the above step (1) and before the step (2), but is not limited thereto.
  • the graphene layer 253 is an i layer, and the n-type doped graphene layer 251, the graphene layer 253, and the p-type doped graphene layer 252 constitute a transparent thin film photovoltaic cell 250.
  • the i layer can serve as a photocurrent generating layer and a transport layer, and the n-type doped graphene layer and the p-type doped graphene layer can generate a built-in electric field that promotes carrier drift in the i layer, and collect photogenerated carriers.
  • a pin structure is formed between the n-type doped graphene layer 251, the graphene layer 253, and the p-type doped graphene layer 252. It should be noted that the transparent thin film photovoltaic cell in this embodiment may not include the i layer, and the pn structure is composed of the n-type doped graphene layer 251 and the p-type doped graphene layer 252 as shown in FIG. 7b.
  • Transparent thin film photovoltaic cell 250 When the ambient light and/or the backlight through the second substrate 220 passes through the transparent thin film photovoltaic cell 250, the transparent thin film photovoltaic cell 250 can generate a current to power and/or charge the touch screen.
  • the transparent thin film photovoltaic cell 250 can be interchanged with the position of the touch electrode layer composed of the touch sensing electrode 231 and the touch driving electrode 232.
  • the second substrate in the touch screen of the embodiment of the present invention may include a first region and a second region, and the n-type doped graphene layer and the p-type doped graphene layer of the transparent thin film photovoltaic cell may also be
  • the first lead and the second lead are respectively connected to the control circuit or the driving IC, and the first electrode and the second electrode may also be disposed.
  • the control circuit may also include a light sensing unit, and the transparent thin film photovoltaic battery may also include a plurality of sub-transparent thin film photovoltaic cells. .
  • the control circuit the light sensing unit, the driving IC, the n-type doped graphene layer, the p-type doped graphite Alken layer, touch sensing electrode, touch driving electrode, sub-transparent thin film photovoltaic cell
  • the transparent thin film photovoltaic cell charges the touch screen, etc.
  • the structure and the layout of the touch electrode layer in the touch screen of the embodiment are the same as or similar to those of the touch electrode layer of the first embodiment.
  • the second substrate 220 in this embodiment serves as the opposite substrate (opposing substrate) of the liquid crystal touch screen. It is disposed opposite to the array substrate, for example, the opposite substrate can be a color film substrate, and serves as a base substrate for the thin film photovoltaic cell. This saves material and reduces manufacturing process steps, resulting in cost savings.
  • the touch screen which is an On-Cell capacitive touch display screen.
  • the touch screen includes a first substrate 310, a second substrate 320, and a liquid crystal layer 311 disposed between the first substrate 310 and the second substrate 320.
  • the touch panel further includes a plurality of touch driving electrodes 332 disposed on a side of the first substrate 310 facing the liquid crystal layer 311, and a plurality of touch sensing electrodes 331 disposed on a side of the second substrate 320 facing away from the liquid crystal layer 311.
  • a transparent insulating layer 340 disposed on the plurality of touch sensing electrodes 331 , an n-type doped graphene layer 352 disposed on the transparent insulating layer 340 , and a p-type disposed on the n-type doped graphene layer 352 Doped graphene layer 351.
  • a cover plate 380 is provided on the p-type doped graphene layer 351 layer.
  • the material of the transparent insulating layer 3 can be referred to the description of the transparent insulating layer in the first embodiment, and details are not described herein again.
  • the p-type doped graphene layer 351 and the n-type doped graphene layer 352 can be prepared by the preparation method described in the first embodiment.
  • the second substrate in this embodiment is the substrate substrate in the first embodiment.
  • the p-doped graphene layer 351 and the n-doped graphene layer 352 constitute a transparent thin film photovoltaic cell 350.
  • a p-type doped graphene layer 351 forms a pn junction with the n-doped graphene layer 352.
  • the transparent thin film photovoltaic cell 350 can generate a current to power and/or charge the touch screen.
  • the second substrate in the touch screen of the embodiment of the present invention may include a first region and a second region, and the n-type doped graphene layer and the p-type doped graphene layer constituting the transparent thin film photovoltaic cell are also
  • the first lead and the second lead may be respectively connected to the control circuit or the driving IC, or the first electrode and the second electrode may be disposed, the control circuit may also include a light sensing unit, and the transparent thin film photovoltaic cell may also include a plurality of sub-transparent films. PV.
  • first area Regarding the first area, the second area, the first lead, the first Two leads, first electrode, second electrode, control circuit, light sensing unit, driving IC, n-doped graphene layer, p-doped graphene layer, sub-transparent thin film photovoltaic cell, and transparent thin film photovoltaic cell
  • driving IC n-doped graphene layer, p-doped graphene layer, sub-transparent thin film photovoltaic cell, and transparent thin film photovoltaic cell
  • the touch sensing electrodes 331 and the touch driving electrodes 332 in the touch screen of the embodiment are disposed in different layers.
  • the plurality of touch sensing electrodes 231 may extend along the first direction
  • the plurality of touch driving electrodes 232 may extend along the second direction.
  • the first direction is perpendicular to the second direction.
  • the plurality of touch sensing electrodes are insulated from each other, and the plurality of touch driving electrodes are insulated from each other.
  • the second substrate 320 in the touch screen of the embodiment serves not only as an opposite substrate of the liquid crystal display but also as a base substrate of the thin film photovoltaic cell. This saves material and reduces manufacturing process steps, resulting in cost savings.
  • the touch screen includes a first substrate 410, a second substrate 420, and a liquid crystal layer 411 disposed between the first substrate 410 and the second substrate 420.
  • the touch screen further includes a plurality of touch driving electrodes 432 disposed on a side of the first substrate 410 facing the liquid crystal layer 411, and a plurality of touch sensing electrodes 431 disposed on a side of the second substrate 420 facing the liquid crystal layer 411.
  • a p-type doped graphene layer 452 disposed on a side of the second substrate 420 facing away from the liquid crystal layer 411, and an n-type doped graphene layer 451 disposed on the p-type doped graphene layer 452 are disposed.
  • the transparent thin film photovoltaic cell includes a p-type doped graphene layer and an n-type doped graphene layer.
  • the transparent thin film photovoltaic cell and the touch electrode layer (touch sensing electrode layer) are respectively disposed on both sides of the second substrate.
  • the touch sensing electrode only the position of the touch sensing electrode is adjusted, and it is placed in the liquid crystal cell to form an in-cell touch panel.
  • the control circuit the light sensing unit, the driving IC, the n-type doped graphene layer, and the p-type doping
  • the hybrid graphene layer, the sub-transparent thin film photovoltaic cell, and the transparent thin film photovoltaic cell charge the touch panel is the same as that of the third embodiment.
  • the second substrate 420 in the touch screen of the embodiment serves not only as an opposite substrate of the liquid crystal display but also as a base substrate of the transparent thin film photovoltaic cell.
  • the transparent thin film photovoltaic cell 450 and the touch sensing electrode 431 are composed of a p-type doped graphene layer 452 and an n-type doped graphene layer 451.
  • the touch panel includes a first substrate 510, a light emitting unit layer 511 disposed on the first substrate 510, a second substrate 520, and a plurality of touch sensing electrodes 531 disposed on a side of the second substrate 520 facing away from the light emitting unit layer 511. And a plurality of touch sensing electrodes 532, a transparent insulating layer 540 disposed on the plurality of touch sensing electrodes 531 and the plurality of touch sensing electrodes 532, and a p-type doped graphene layer 552 disposed on the transparent insulating layer 540. A graphene layer 553 disposed on the p-type doped graphene layer 552, and an n-type doped graphene layer 551 disposed on the graphene layer 553.
  • the first substrate may be an array substrate
  • the second substrate may be an OLED package cover or an OLED package film.
  • the material of the transparent insulating layer 540 can be referred to the description of the transparent insulating layer in the first embodiment, and details are not described herein again.
  • the n-type doped graphene layer 551 and the p-type doped graphene layer 552 can be prepared by the preparation method described in the first embodiment.
  • the graphene layer 553 can be prepared by the method described in Example 2.
  • the graphene layer 553 is an i layer, and the n-type doped graphene layer 551 and the p-type doped graphene layer 552 can form a pin-structured transparent thin film photovoltaic cell 550.
  • the transparent thin film photovoltaic cell 550 can generate a current to power and/or charge the touch screen.
  • the thin film photovoltaic cell in this embodiment may also not include the i layer, and the n-type doped graphene layer 551 and the p-type doped graphene layer 552 may form a transparent thin film photovoltaic cell of a pn structure.
  • the transparent thin film photovoltaic cell 550 can be interchanged with the position of the touch electrode layer composed of the touch sensing electrode 531 and the touch driving electrode 532.
  • the structure and layout of the touch electrode layer in the touch screen of this embodiment may be the same as or similar to the touch electrode layer of the second embodiment.
  • the second substrate in the touch screen of this embodiment may include a first region and a second region, and the n-type doped graphene layer and the p-type doped graphene layer of the transparent thin film photovoltaic cell may also pass through the first lead and The second lead is connected to the control circuit or the driver IC,
  • the first electrode and the second electrode may be disposed, the control circuit may also include a light sensing unit, and the transparent thin film photovoltaic cell may also include a plurality of sub-transparent thin film photovoltaic cells.
  • the first lead, the second lead, the first electrode, the second electrode, the control circuit, the photosensitive unit, the n-type doped graphene layer, the p-type doped graphene layer, and the touch sensing For the case where the electrode, the touch driving electrode, the sub-transparent thin film photovoltaic cell, and the transparent thin film photovoltaic cell charge the touch screen, etc., refer to the related drawings and related description of the first embodiment. I will not repeat them here.
  • the second substrate 520 in this embodiment functions not only as an OLED touch screen package substrate or a package film but also as a base substrate of a thin film photovoltaic cell. This saves material and reduces manufacturing process steps, resulting in cost savings.
  • the touch screen includes a first substrate 610, a second substrate 620, a light emitting unit 611 disposed on the first substrate 610, and a plurality of touches disposed on a side of the second substrate 620 facing the light emitting unit layer 611.
  • the control sensing electrode 631 and the plurality of touch sensing electrodes 632 are disposed on the side of the plurality of touch sensing electrodes 631 and the plurality of touch sensing electrodes 632 facing the light emitting unit layer 611, and are disposed on the second substrate 620.
  • a cover plate 680 can be provided on the above structure.
  • the first substrate may be an array substrate; the second substrate may be an OLED package cover or an OLED package film.
  • the material of the transparent insulating layer 640 can be referred to the description of the transparent insulating layer in the first embodiment, and details are not described herein again.
  • the n-type doped graphene layer 651 and the p-type doped graphene layer 652 can be prepared by the preparation method described in the first embodiment.
  • the graphene layer 653 can be prepared by the method of preparing a graphene layer provided in the second embodiment.
  • the p-type doped graphene layer 652, the graphene layer 653, and the n-type doped graphene layer 651 form a pin-structured transparent thin film photovoltaic cell 650.
  • the transparent thin film photovoltaic cell 650 can generate a current to power and/or charge the touch screen.
  • the transparent thin film photovoltaic cell 650 can be interchanged with the position of the touch electrode layer composed of the touch sensing electrode 631 and the touch driving electrode 632.
  • the second substrate in the touch screen of the embodiment of the present invention may include a first region and a second region, and the n-type doped graphene layer and the p-type doped graphene layer constituting the transparent thin film photovoltaic cell are also
  • the first lead and the second lead may be respectively connected to the control circuit or the driving IC, and the first electrode and the second electrode may be disposed, the control circuit may also include a light sensing unit, and the transparent thin film photovoltaic battery may also include a plurality of sub-transparent thin film photovoltaics. battery.
  • the touch sensing electrode, the touch driving electrode, the sub-transparent thin film photovoltaic cell, and the transparent thin film photovoltaic cell for charging the touch screen refer to the related drawings and related description of the first embodiment. I will not repeat them here.
  • the structure and layout of the touch electrode layer in the touch screen of the embodiment are the same as or similar to those of the touch electrode layer of the first embodiment, in this embodiment.
  • the second substrate 620 can be used as a package substrate of the OLED touch screen or as a base substrate of the thin film photovoltaic cell and the touch electrode layer, thereby saving materials and reducing manufacturing process steps, thereby saving cost.
  • the light emitting unit layer in the embodiment of the present invention may include a plurality of light emitting units, each of which includes, for example, a light emitting layer, a cathode, and an anode, and may further include a hole transporting layer, an electron transporting layer, and a hole injecting layer. , electron injection layer, etc.
  • the touch screen of the embodiment of the invention uses a graphene thin film photovoltaic cell, and when ambient light and/or light emitted by the touch screen itself passes through the graphene thin film photovoltaic cell, current can be generated to supply/charge the touch screen to extend the use time of the touch screen. Since graphene is known to be the thinnest and hardest nanomaterial in the world, it is almost completely transparent and absorbs only 2.3% of light; when a graphene thin film photovoltaic cell is formed on a touch screen, neither The thickness of the touch screen is greatly increased, and the light transmittance of the touch screen is not excessively affected, and the function of the touch screen can be protected, and can be widely applied to various types of touch screens.
  • the transparent thin film photovoltaic cell in the touch screen of all embodiments of the present invention can adopt the pn structure of the graphene thin film photovoltaic cell or the pin structure of the graphene film light. Volt battery.
  • the display screen includes a first substrate 710, a second substrate 720, a light emitting unit layer 711 disposed on the first substrate 710, and a p-type doped graphene layer 752 disposed on the second substrate.
  • a graphene layer 753 disposed on the p-type doped graphene layer 752, and an n-type doped graphene layer 751 disposed on the graphene layer 753 are disposed.
  • a cover plate 780 may be disposed on the n-type doped graphene layer 751.
  • the first substrate may be an array substrate
  • the second substrate may be an OLED package cover or an OLED package film.
  • the n-type doped graphene layer 751 and the p-type doped graphene layer 752 can be prepared by the preparation method described in the first embodiment.
  • the graphene layer 753 can be prepared by the method of preparing a graphene layer provided in the second embodiment.
  • a p-type doped graphene layer 752, a graphene layer 753, and an n-type doped graphene layer 751 form a pin-type transparent thin film photovoltaic cell 750.
  • the transparent thin film photovoltaic cell 750 can generate a current to power and/or charge the display.
  • a pin-type transparent thin film photovoltaic cell 750 formed of a p-type doped graphene layer 752, a graphene layer 753, and an n-type doped graphene layer 751 may be formed on the second substrate 720 facing the light emitting unit layer 711.
  • a transparent insulating layer is formed on one side and between the transparent photovoltaic thin film battery 750 and the light emitting unit layer 711.
  • the positions of the p-doped graphene layer 752 and the n-type doped graphene layer 751 may be interchanged, and a pin-shaped transparent thin film photovoltaic cell 750 may be formed with the graphene layer 753 interposed therebetween.
  • the graphene layer 753 may not be provided, and the transparent thin film photovoltaic cell includes only the p-type doped graphene layer 752 and the n-type doped graphene layer 751.
  • the second substrate includes at least a first region and a second region, the second region abutting and surrounding the first region.
  • the first area is a display area and the second area is a peripheral area.
  • the transparent thin film photovoltaic cell can be disposed over the entire area in the first region.
  • the n-doped graphene layer and the p-doped graphene layer are connected to the control circuit via the first lead and the second lead, respectively.
  • a transparent thin film photovoltaic cell can include a plurality of sub-transparent thin film photovoltaic cells.
  • each sub-transparent thin film photovoltaic cell is strip-shaped.
  • a plurality of sub-transparent thin film photovoltaic cells are disposed in the first region, There are spaces between adjacent sub-transparent thin film photovoltaic cells.
  • the n-doped graphene layer and the p-doped graphene layer in each of the sub-transparent thin film photovoltaic cells may be connected to the control circuit via the first lead and the second lead, respectively.
  • the control circuit can also be replaced with a driver IC.
  • the n-type doped graphene layer and the p-type doped graphene layer in each sub-transparent thin film photovoltaic cell are respectively connected to the driving IC via the first lead and the second lead.
  • the first lead and the n-type doped graphene layer are disposed in the same layer
  • the second lead and the p-type doped graphene layer are disposed in the same layer.
  • the first lead and the second lead are staggered from each other.
  • the current generated by each of the sub-transparent photovoltaic thin film cells can be directly connected to the driving IC via the first lead and the second lead, respectively. As a result, the display time of the display can be extended.
  • the shape of the sub-transparent thin film photovoltaic cell is not limited to a strip shape, and may be other shapes other than strips, such as a comb shape, a wave shape, a triangle shape, a trapezoid shape, and the like.
  • the coverage and ratio can be adjusted according to the actual required aperture ratio. For example, when a higher aperture ratio is required, a larger spacing can be placed between the sub-transparent thin film photovoltaic cells. When the aperture ratio is sufficient, a small pitch can be set between the sub-transparent thin film photovoltaic cells.
  • the display screen further includes a first electrode and a second electrode, and the n-type doped graphene layer of the transparent thin film photovoltaic cell is connected to the control circuit via the first electrode.
  • the p-doped graphene layer of the transparent thin film photovoltaic cell is connected to the control circuit via a second electrode.
  • the first electrode and the second electrode may be disposed at the same layer interval.
  • the display screen can also include a rechargeable battery.
  • the control circuit is used to control whether the transparent thin film photovoltaic cell charges the rechargeable battery.
  • control circuit may further include a light sensing unit for detecting the intensity of the light to control whether or not to charge the rechargeable battery.
  • the embodiment provides a control flow of a display screen.
  • the control flow can be as follows: when there is sufficient intensity of illumination, the transparent thin film photovoltaic cell generates current; the control circuit detects whether the display is working, and if the display is working, the control circuit controls the transparent thin film photovoltaic battery to not charge the rechargeable battery If the display does not work, the control circuit continues to detect whether the rechargeable battery is fully charged. If the rechargeable battery is not fully charged, the control circuit controls the transparent photovoltaic battery to charge the rechargeable battery.
  • the display provided by the embodiment of the present invention can charge the rechargeable battery when the display is not working when there is sufficient illumination. save. Thereby, the use time of the display screen is greatly extended, and the number of times of charging is reduced.
  • control flow of the display screen is not limited thereto.
  • the transparent thin film photovoltaic cell is capable of generating sufficient current, it can also be directly connected to the control circuit to control the operation of the display.
  • the display screen includes a first substrate 810 , a second substrate 820 , a liquid crystal layer 811 disposed between the first substrate 810 and the second substrate 820 , and a second substrate 820 disposed opposite to the liquid crystal layer 811 .
  • a cover plate 880 may be disposed on the n-type doped graphene layer 851.
  • the first substrate may be an array substrate
  • the second substrate may be an opposite substrate
  • the n-type doped graphene layer 851 and the p-type doped graphene layer 852 can be prepared by the preparation method described in the first embodiment.
  • the p-doped graphene layer 852 and the n-doped graphene layer 851 form a pn-structured transparent thin film photovoltaic cell 850.
  • the transparent thin film photovoltaic cell 850 can generate a current to power and/or charge the display.
  • a pn-type transparent thin film photovoltaic cell 850 formed of a p-type doped graphene layer 852 and an n-type doped graphene layer 851 may be formed on a surface of a side of the second substrate 820 facing the liquid crystal layer 811.
  • the positions of the p-doped graphene layer 852 and the n-doped graphene layer 851 can be interchanged.
  • the second substrate in the display screen of the embodiment of the present invention may include a first region and a second region, and the n-type doped graphene layer and the p-type doped graphene layer constituting the transparent thin film photovoltaic cell.
  • the first lead and the second lead may be respectively connected to the control circuit or the driving IC, or the first electrode and the second electrode may be disposed, the control circuit may also include a light sensing unit, and the transparent thin film photovoltaic cell may also include a plurality of sub-transparent films. PV.
  • the first region, the second region, the first lead, the second lead, the first electrode, the second electrode, the control circuit, the light sensing unit, the driving IC, and the n-type doped stone For the case where the ocene layer, the p-type doped graphene layer, the sub-transparent thin film photovoltaic cell, and the transparent thin film photovoltaic cell charge the display screen, etc., refer to the related description of the seventh embodiment. I will not repeat them here.
  • the display screen provided by the embodiment of the invention adopts a graphene transparent thin film photovoltaic cell, and when ambient light and/or light emitted by the display screen passes through the graphene transparent thin film photovoltaic cell, current can be generated to power/charge the display screen to extend The time the display is used. Since graphene is the thinnest and hardest nanomaterial known in the world, it is almost completely transparent, absorbing only 2.3% of light; when it is made into a graphene thin film photovoltaic cell, it is neither It will greatly increase the thickness of the display, and will not affect the light transmittance of the display too much. It can also protect the display and can be widely applied to various touch screens, displays, and touch screens.
  • the present embodiment provides a touch display device, which includes any one of the touch screens provided in Embodiments 1 to 6, or includes any one of the display screens provided in Embodiment 7 or Embodiment 8.
  • the touch display device of this embodiment may further include other structures, and details are not described herein again.
  • the touch display device of at least one embodiment of the present invention employs a graphene thin film photovoltaic cell integrated in a touch screen, and when the ambient light and/or the light emitted by the display module passes through the graphene thin film photovoltaic cell, the current can be generated.
  • Touch screen / display / touch display device power / charge to extend the use of the touch screen / display / touch display device. Since graphene is known to be the thinnest and hardest nanomaterial in the world, it is almost completely transparent and absorbs only 2.3% of light.
  • the thickness of the touch screen/display screen/touch display device is not greatly increased, and the light transmittance of the touch screen is not excessively affected.
  • the rate can also protect the touch screen.
  • the reasonable arrangement of the graphene thin film photovoltaic cell eliminates the need to additionally form a transparent insulating layer, thereby saving material, reducing manufacturing process steps, thereby saving cost and having a small thickness. In the pursuit of thin and light market environment, it has a better market prospect.
  • the positions of the n-type doped graphene layer and the p-type doped graphene layer of the embodiments of the present invention are interchangeable.
  • the transparent thin film photovoltaic cell in the touch screen/display screen/touch display screen of the embodiments of the present invention may adopt a transparent thin film photovoltaic cell of a pn structure or a transparent thin film photovoltaic cell of a pin structure.
  • the opposite substrate and the array substrate are disposed opposite to each other, and the opposite substrate and the array substrate are respectively upper and lower substrates of the display panel, and a thin film transistor array, a pixel electrode, and the like are usually formed on the array substrate.
  • the structure forms a colored resin on the opposite substrate.
  • the opposite substrate is a color film substrate.
  • the light emitting unit layer may include a plurality of light emitting units, and each of the light emitting units may include, for example, a light emitting layer, a cathode, and an anode, and may further include a hole transporting layer.
  • the touch display panel provided by the embodiments of the present invention can be used for any product or component having a touch and display function, such as a liquid crystal panel, an electronic paper, a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a watch, a tablet computer, and the like. .
  • the embodiments of the present invention and the accompanying drawings are described by taking the mutual-capacitance touch electrode structure as an example.
  • the touch electrode structure in the touch electrode layer can adopt a common structure, and is not limited to the description in the present disclosure.
  • Embodiments of the present invention are described by taking a mutual capacitive touch screen as an example.
  • the touch electrode layer of the mutual capacitive touch screen includes a lateral electrode and/or a longitudinal electrode.
  • the lateral electrodes and the longitudinal electrodes are located in different layers, and an insulating layer may be disposed between the layer in which the lateral electrodes are located and the layer in which the longitudinal electrodes are located.
  • a capacitor is formed where the two sets of electrodes intersect.
  • the touch position is determined by detecting the change in the capacitance value (for example, the change in the capacitance value can be detected by the touch detection chip).
  • the capacitive touch electrode structure can also adopt a self-capacitance touch electrode structure.
  • the touch electrode layer includes a touch electrode array, and the touch electrodes are insulated from each other, and the touch electrodes respectively form a capacitance with the ground.
  • the touch position can be determined by detecting the change of the capacitance value of each touch electrode (for example, the touch detection chip can be detected) Detect changes in capacitance values).
  • the invention is not limited thereto.

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Abstract

触摸屏及触摸显示装置，该触摸屏包括衬底基板以及设置在所述衬底基板(10)上的触控电极层(30)和透明薄膜光伏电池(50)，所述触控电极层(30)和所述透明薄膜光伏电池(50)彼此层叠且位于所述衬底基板(10)的同一侧，所述触控电极层(30)与所述透明薄膜光伏电池(50)之间设置有透明绝缘层(40)；或者所述触控电极层(30)与所述透明薄膜光伏电池(50)分别设置在所述衬底基板(10)的两侧；所述透明薄膜光伏电池包括n型掺杂的石墨烯层(51)和p型掺杂的石墨烯层(52)。设置在触摸屏中的透明薄膜光伏电池可以给电子产品充电，使其使用时间得到延长。

Description

触摸屏及触摸显示装置 技术领域
本发明至少一个实施例涉及一种触摸屏及触摸显示装置。
背景技术
触摸屏作为一种全新的人机交互设备，有着生动直观的操作接口且符合人体的使用习惯，能让娱乐办公变得更加生动和放松。触摸屏包括电阻式、电容式和红外光学式等类型。电阻式触摸屏通过按压使两层电极之间的电阻发生变化或彼此导通来确定触摸点。电容式触摸屏通过例如人体触摸导致的电容变化来确定触摸点。红外光学式触摸屏是通过例如手指阻挡红外光线接收确定触摸点。因电容式触摸屏具有高透明度、耐用性、多点触摸等优势，使其在电子产品领域得到广泛的应用。
目前，电子产品市场不断扩展，触摸显示屏幕的显示能耗较大是一个急需解决的问题。一方面，由于手机、平板电脑、电子阅读器等移动触摸显示设备需要随身携带，不能随时充电。另一方面，随着移动互联网的发展和各种应用程序的层出不穷，人们使用手机、平板电脑、电子阅读器等移动触摸显示设备的时间不断增加。这些设备的电池使用时间较短，需要频繁充电给使用者的日常生活带来很多不便。而这些问题也一直困扰消费者和生产厂商，也是未来急需关注的方向。为了解决上述问题，目前的解决方案主要是增大产品的电池容量。然而，电池容量的增加不仅会增加手机、平板电脑等电子产品的体积和重量，影响产品的便携性和美感，同时也会带来发热量大、成本高等缺点。并且，由于手机、平板电脑、电子阅读器等移动触摸显示设备的尺寸限制，仅仅依靠增加电池的容量难以解决这一矛盾。
发明内容
本发明至少一个实施例提供一种触摸屏及触摸显示装置，在触摸屏中设置的透明薄膜光伏电池可以给电子产品充电，延长其使用时间。
本发明的至少一个实施例提供一种触摸屏，其包括衬底基板以及设置在所述衬底基板上的触控电极层和透明薄膜光伏电池，所述触控电极层和所述 透明薄膜光伏电池彼此层叠且位于所述衬底基板的同一侧，所述触控电极层与所述透明薄膜光伏电池之间设置有透明绝缘层；或者，所述触控电极层与所述透明薄膜光伏电池分别设置在所述衬底基板的两侧；所述透明薄膜光伏电池包括n型掺杂的石墨烯层和p型掺杂的石墨烯层。
例如，在本发明一实施例提供的触摸屏中，所述透明薄膜光伏电池还包括石墨烯层，所述石墨烯层位于所述n型掺杂的石墨烯层和所述p型掺杂的石墨烯层之间。
例如，在本发明一实施例提供的触摸屏中，所述的触摸屏还包括控制电路、第一引线和第二引线；所述n型掺杂的石墨烯层和所述p型掺杂的石墨烯层分别经所述第一引线和所述第二引线连接至所述控制电路，所述第一引线和所述n型掺杂的石墨烯层同层设置，所述第二引线和所述p型掺杂的石墨烯层同层设置，所述第一引线和所述第二引线相互错开。
例如，在本发明一实施例提供的触摸屏中，所述的触摸屏还包括控制电路、第一电极和第二电极；所述n型掺杂的石墨烯层和所述p型掺杂的石墨烯层分别经所述第一电极和所述第二电极连接至所述控制电路。
例如，在本发明一实施例提供的触摸屏中，所述第一电极和所述第二电极同层间隔设置。
例如，在本发明一实施例提供的触摸屏中，所述的触摸屏，还包括可充电电池；所述控制电路用以控制所述透明薄膜光伏电池是否对所述可充电电池进行充电。
例如，在本发明一实施例提供的触摸屏中，所述控制电路包括光感单元，所述光感单元用以侦测光线的强弱，以控制是否对所述可充电电池进行充电。
例如，在本发明一实施例提供的触摸屏中，所述触控电极层包括多个触控驱动电极和/或多个触控感应电极。
例如，在本发明一实施例提供的触摸屏中，所述透明绝缘层包括透明光学胶层、SiNxOy层、SiO2层、氧化铝层中的任意一种。
例如，在本发明一实施例提供的触摸屏中，在所述触控电极层和所述透明薄膜光伏电池位于所述衬底基板的同一侧的情况下，所述衬底基板和所述触控电极层之间设置所述透明薄膜光伏电池，或者，所述衬底基板和所述透明薄膜光伏电池之间设置所述触控电极层。
例如，在本发明一实施例提供的触摸屏中，所述衬底基板至少包括第一区域和第二区域，所述第二区域邻接且环绕所述第一区域，所述第一区域为触控区域，所述第二区域为周边区域，所述透明薄膜光伏电池整面设置在所述第一区域内，或者，所述透明薄膜光伏电池设置在部分所述第一区域内。
例如，在本发明一实施例提供的触摸屏中，所述透明薄膜光伏电池设置在部分所述第一区域内的情况下，所述透明薄膜光伏电池包括多个子透明薄膜光伏电池。
本发明的至少一个实施例还提供一种触摸显示装置，其包括上述任一触摸屏。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为本发明一实施例提供的一种触摸屏的局部剖面示意图；
图2为本发明一实施例提供的另一种触摸屏的局部剖面示意图；
图3为本发明一实施例提供的一种触控电极层的平面示意图；
图4a为本发明一实施例提供的一种触摸屏中薄膜光伏电池的平面示意图；
图4b为本发明一实施例提供的另一种触摸屏中薄膜光伏电池的平面示意图；
图5为本发明一实施例提供的另一种触摸屏中薄膜光伏电池的平面示意图；
图6为本发明一实施例提供的一种触摸屏的控制流程示意图；
图7a为本发明一实施例提供的另一种液晶触摸屏的局部剖面示意图；
图7b为本发明一实施例提供的另一种液晶触摸屏的局部剖面示意图；
图8为本发明一实施例提供的另一种液晶触摸屏的局部剖面示意图；
图9为本发明一实施例提供的另一种液晶触摸屏的局部剖面示意图；
图10为本发明一实施例提供的一种OLED触摸屏的局部剖面示意图；
图11为本发明一实施例提供的另一种OLED触摸屏的局部剖面示意图；
图12为本发明一实施例提供的另一种OLED显示屏的局部剖面示意图；以及
图13为本发明一实施例提供的另一种液晶显示屏的局部剖面示意图。
附图标记：
10、110-显示模组；20、120-衬底基板；30-触控电极层；40、140、240、340、540、640-透明绝缘层；50、150、250、350、450、550、650、750、850-透明薄膜光伏电池；51、151、251、352、451、551、651、751、851-n型掺杂的石墨烯层；52、152、252、351、452、552、652、752、852-p型掺杂的石墨烯层；131、231、331、431、531、631-触控感应电极；132、232、332、432、532、632-触控驱动电极；1501-子透明薄膜光伏电池；161-第一引线；162-第二引线；163-第一电极；164-第二电极；171-第一区域；172-第二区域；191-控制电路；192-光感单元；193-可充电电池；194-驱动IC或驱动电路；210、310、410、510、610、710、810-第一基板；211、311、411、811-液晶层；220、320、420、520、620、720、820-第二基板；253、553、653、753-石墨烯层；280、380、480、580、680、780、880-盖板；511、611、711-发光单元层。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的各实施例利用透明薄膜光伏电池透明的特点，将其集成在触摸屏中，使得触摸屏在有光照(例如背光源或太阳光)的环境下，能够通过透明薄膜光伏电池不断地补充电能，以延长其使用时间。进一步地，由于透明薄膜光伏电池的光透过率较高，厚度薄，所以其对触摸屏的显示和尺寸不会造成较大影响。
本发明的至少一个实施例提供一种触摸屏，该触摸屏包括衬底基板以及设置在衬底基板上的触控电极层和透明薄膜光伏电池，触控电极层和透明薄 膜光伏电池彼此层叠且位于衬底基板的同一侧，触控电极层与透明薄膜光伏电池之间设置有透明绝缘层；或者触控电极层与透明薄膜光伏电池分别设置在衬底基板的两侧；透明薄膜光伏电池包括层叠的n型掺杂的石墨烯层和p型掺杂的石墨烯层。
例如，触控电极层包括多个触控驱动电极和/或多个触控感应电极。
例如，如图1所示，本发明的一实施例提供的触摸屏包括衬底基板20、设置在衬底基板上的触控电极层30、设置在触控电极层30上的透明绝缘层40、设置在透明绝缘层40上的n型掺杂的石墨烯层51、以及形成在n型掺杂的石墨烯层上的p型掺杂的石墨烯层52。例如，n型掺杂的石墨烯层51和p型掺杂的石墨烯层52组成透明薄膜光伏电池50。例如，该触摸屏可以覆盖在显示模组10上，环境光和/或显示模组10发出的光经过由n型掺杂的石墨烯层51和p型掺杂的石墨烯层52组成的透明薄膜光伏电池50时，该透明薄膜光伏电池50可以产生电流为该触摸屏供电和/或充电，或者为整个设备(例如手机、平板电脑等)所包括的二次电池充电。例如，该显示模组10可以是液晶显示模组或者OLED显示模组。
下面通过几个具体实例进行说明。
实施例一
本实施例提供一种触摸屏。如图2所示，该触摸屏包括衬底基板120、设置在衬底基板上的多个触控感应电极131和多个触控驱动电极132、设置在多个触控感应电极131和多个触控驱动电极132上的透明绝缘层140、设置在透明绝缘层140上的n型掺杂的石墨烯层151和设置在n型掺杂的石墨烯层151上的p型掺杂的石墨烯层152。例如，本实施例提供的触摸屏可以为单片式(One Glass Solution，OGS)触摸屏。
例如，该透明绝缘层140可以是透明光学胶层或无机绝缘层，但不限于此。例如，无机绝缘层包括SiNxOy层、SiO2层、氧化铝层中的任意一种，但不限于此，只要是能起到绝缘作用的透明薄膜均可。透明光学胶层例如可以为OC光阻层(透明光阻层)。
例如，该n型掺杂的石墨烯层可以用但不限于以下步骤制备：
步骤(1)、在金属基底上形成一层石墨烯层。例如，可以采用化学气相沉积法形成石墨烯层，但不限于此。例如，金属基底可以为铜箔或镍箔，但 不限于此。
步骤(2)、对形成在金属基底上的石墨烯层进行掺杂形成n型掺杂的石墨烯层。例如，可以进行氮掺杂形成n型掺杂的石墨烯层，但不限于此。
步骤(3)、在形成在金属基底上的n型掺杂的石墨烯层上形成聚甲基丙烯酸甲酯(PMMA)膜。例如，该步骤可如下：可在形成在基底上的n型掺杂的石墨烯层表面滴涂含聚甲基丙烯酸甲酯(PMMA)的有机溶剂溶液，使用匀胶机，使含PMMA的有机溶剂溶液均匀包覆石墨烯薄膜，再将金属基底放在加热台上，烘干溶剂，获得PMMA膜。
步骤(4)、去除金属基底。例如可采用刻蚀液将基底腐蚀掉。例如，所述刻蚀液可以为FeCl3溶液、Fe(NO3)3溶液、Fe2(SO4)3溶液。例如刻蚀液浓度范围可以为0.5～2mol/L。
步骤(5)、将PMMA膜上的n型掺杂的石墨烯层转移到衬底基板上。因石墨烯具有较强的物理吸附能力，故而可吸附到衬底基板上。
步骤(6)、去除PMMA膜。例如，可采用溶剂将PMMA膜溶解，溶剂例如可以采用丙酮。也可以采用退火的方式去除PMMA膜。
例如，该n型掺杂的石墨烯层制备过程还可包括步骤(7)、采用光刻工艺形成所需图形。例如，步骤(7)可在上述步骤(1)之后、步骤(3)之前进行，但不限于此。例如，步骤(7)可在上述步骤(1)之后、步骤(2)之前进行，也可以在上述步骤(2)之后、步骤(3)之前进行，但不限于此。
例如，该p型掺杂的石墨烯层可以用但不限于以下步骤制备：
步骤(1)、在金属基底上形成一层石墨烯层。例如，可以采用化学气相沉积法形成石墨烯层，但不限于此。例如，金属基底可以为铜箔或镍箔，但不限于此。
步骤(2)、对形成在金属基底上的石墨烯层进行掺杂形成p型掺杂的石墨烯层。例如，可以进行氧掺杂或硼掺杂形成p型掺杂的石墨烯层，但不限于此。
步骤(3)、在形成在金属基底上的p型掺杂的石墨烯层上形成聚甲基丙烯酸甲酯(PMMA)膜。例如，该步骤可如下：可在形成在基底上的p型掺杂的石墨烯层表面滴涂含聚甲基丙烯酸甲酯(PMMA)的有机溶剂溶液，使用匀胶机，使含PMMA的有机溶剂溶液均匀包覆石墨烯薄膜，再将金属基 底放在加热台上，烘干溶剂，获得PMMA膜。
步骤(4)、去除金属基底。例如可采用刻蚀液将基底腐蚀掉。例如，所述刻蚀液可以为FeCl3溶液、Fe(NO3)3溶液、Fe2(SO4)3溶液。例如，刻蚀液浓度范围可以为0.5～2mol/L。
步骤(5)、将PMMA膜上的p型掺杂的石墨烯层转移到衬底基板上。因石墨烯具有较强的物理吸附能力，故而可吸附到衬底基板上。
步骤(6)、去除PMMA膜。例如，可采用溶剂将PMMA膜溶解，溶剂例如可以采用丙酮。也可以采用退火的方式去除PMMA膜。
例如，该p型掺杂的石墨烯层制备过程还可包括步骤(7)、采用光刻工艺形成所需图形。例如，步骤(7)可在上述步骤(1)之后、步骤(3)之前进行，但不限于此。例如，步骤(7)可在上述步骤(1)之后、步骤(2)之前进行，也可以在上述步骤(2)之后、步骤(3)之前进行，但不限于此。例如，上述n型掺杂的石墨烯层的制备方法中，也可以将石墨烯层转移到衬底基板上，再进行掺杂形成n型掺杂的石墨烯层。
例如，上述p型掺杂的石墨烯层的制备方法中，也可以将石墨烯层转移到衬底基板上，再进行掺杂形成p型掺杂的石墨烯层。
例如，对石墨烯层进行氮掺杂可以将石墨烯层在氨气中进行高温退火，从而形成n型掺杂的石墨烯层。例如，高温退火的温度可以为500℃±50℃。
例如，对石墨烯层进行氧掺杂可以将石墨烯层在氧气气氛下中进行低温退火，从而形成p型掺杂的石墨烯层。例如，低温退火的温度可以为200℃±50℃。
例如，n型掺杂的石墨烯层可以为氮(N)掺杂的石墨烯层。p型掺杂的石墨烯层可以为氧(O)掺杂的石墨烯层或者为硼(P)掺杂的石墨烯层。例如，n型掺杂的石墨烯层和p型掺杂的石墨烯层可为单层、双层或者三层的层结构。
n型掺杂的石墨烯层151与p型掺杂的石墨烯层152之间形成pn结。该触摸屏可以覆盖在显示模组110上，环境光和/或显示模组110发出的光经过透明薄膜光伏电池150时，该透明薄膜光伏电池150可以产生电流为该触摸屏供电和/或用于充电。例如，该显示模组可以是液晶显示模组或者OLED显示模组。
例如，透明薄膜光伏电池150可以与由触控感应电极131和触控驱动电极132组成的触控电极层30的位置互换。即，触摸屏包括衬底基板120、设置在衬底基板上的n型掺杂的石墨烯层151、设置在n型掺杂的石墨烯层151上的p型掺杂的石墨烯层152、设置在p型掺杂的石墨烯层152上的透明绝缘层140、以及设置在透明绝缘层140上的触控电极层30。
需要说明的是，本发明实施例中的n型掺杂的石墨烯层151和p型掺杂的石墨烯层152的位置可互换。即，p型掺杂的石墨烯层152比n型掺杂的石墨烯层151更靠近衬底基板120。
本实施例透明绝缘层140选用透明光学胶层的情况下，可利用触摸屏上透明光学胶层的绝缘特性，将透明薄膜光伏电池150形成在其上，无需另外再形成一层透明绝缘层，从而可节省材料，减少制作工艺步骤，降低成本。另外，这样的结构相对于其他触摸屏还具有较小的厚度，不会因为加入的透明薄膜光伏电池150而变得笨重，在追求轻薄化的市场环境下，具有较好的市场前景。
例如，如图3所示，多个触控感应电极131和多个触控驱动电极132可同层形成在衬底基板上。例如，由同一层透明导电薄膜形成。例如，一条触控驱动电极132一侧对应4个触控感应电极131；亦可在该条触控驱动电极132另一侧也设置4个触控感应电极131，形成一条触控驱动电极132对应8个触控感应电极131的结构。例如，上述结构均可作为一个基本的触控单元在触控区内呈阵列排列。触控电极层的结构在此不作具体限定。例如，触控驱动电极132和触控感应电极131可互换。当例如手指触摸引起触控驱动电极(Tx)和触控感应电极(Rx)之间的电容发生变化时，通过检测触控感应电极(Rx)上通过耦合触控驱动信号导致的信号输出，由此可以判断出触控位置。可根据这种方式来实现触控。
需要说明的是，本实施例中触控感应电极131和触控驱动电极132不限于上述结构。例如，也可以采用桥式结构。
又例如，如图4a和图5所示，衬底基板至少包括第一区域171和第二区域172，第二区域172邻接且环绕第一区域171。例如，第一区域171为触控区域，第二区域172为周边区域。透明薄膜光伏电池150可整面设置在第一区域171内。
例如，如图4a所示，n型掺杂的石墨烯层和p型掺杂的石墨烯层分别经第一引线161和第二引线162连接至控制电路191。
例如，也可如图4b所示，透明薄膜光伏电池150包括多个子透明薄膜光伏电池1501。例如，每个子透明薄膜光伏电池呈条状。多个子透明薄膜光伏电池设置在第一区域171内，相邻的子透明薄膜光伏电池之间具有间隔。每个子透明薄膜光伏电池中的n型掺杂的石墨烯层和p型掺杂的石墨烯层可分别经第一引线161和第二引线162连接至控制电路191。例如，控制电路191也可替换为驱动IC或驱动电路194。即每个子透明薄膜光伏电池中的n型掺杂的石墨烯层和p型掺杂的石墨烯层分别经第一引线161和第二引线162连接至驱动IC或驱动电路194。
需要说明的是，本实施例以及附图以第一引线和第二引线均为一条为例进行说明，第一引线和第二引线亦可为多条。例如，透明薄膜光伏电池或子透明薄膜光伏电池中的n型掺杂的石墨烯层经多条第一引线161连接至驱动IC或驱动电路194。例如，透明薄膜光伏电池或子透明薄膜光伏电池中的p型掺杂的石墨烯层分别经多条第二引线162连接至驱动IC或驱动电路194。
例如，第一引线161和n型掺杂的石墨烯层同层设置(例如，可采用同一构图工艺形成)，第二引线162和p型掺杂的石墨烯层同层设置(例如，可采用同一构图工艺形成)。第一引线161和第二引线162相互错开。
需要说明的是，本实施例中的相互错开例如是指在衬底基板上的投影不重叠。第一引线和第二引线相互错开例如是指第一引线和第二引线在衬底基板上的投影不重叠。以下实施例可与此相同。
第一引线161和第二引线162可采用光刻工艺形成。例如，当有足够的光强照射到透明薄膜光伏电池150的时候，每个子透明光伏薄膜电池1501产生的电流可分别经第一引线161和第二引线162直接连接到驱动IC。由此，触摸屏的使用时间可以得到延长。
需要说明的是，该子透明薄膜光伏电池1501的形状不限于条状，还可以是除了条状的其他形状，如梳齿型、波浪形、三角形、梯形等。透明薄膜光伏电池150部分设置在触控区域171的情况下，其覆盖范围和比例可以根据实际需要的开口率进行调节。例如，当需要较高的开口率时，子透明薄膜光伏电池1501之间可以设置较大的间隔。当开口率足够时，子透明薄膜光伏电 池1501之间可以设置较小的间距。
例如，如图5所示，该触摸屏还可包括第一电极163和第二电极164，透明薄膜光伏电池150的n型掺杂的石墨烯层经第一电极163与控制电路191相连接。透明薄膜光伏电池150的p型掺杂的石墨烯层经第二电极164与控制电路191相连接。例如，第一电极163和第二电极164可同层间隔设置。例如，第一电极163和第二电极164的材质可以为金属。
需要说明的是，本实施例中的间隔设置例如是指具有间隔，例如是指在衬底基板上的投影不重叠。第一电极和第二电极可间隔设置例如是指第一电极和第二电极具有间隔，第一电极和第二电极在衬底基板上的投影不重叠。以下实施例可与此相同。
这里应该理解的是，在本公开中，“同层”指的是采用同一成膜工艺形成用于形成特定图形的膜层，然后利用同一掩模板通过一次构图工艺形成的层结构。根据特定图形的不同，一次构图工艺可能包括多次曝光、显影或刻蚀工艺，而形成的层结构中的特定图形可以是连续的也可以是不连续的，这些特定图形还可能处于不同的高度或者具有不同的厚度。
应该理解，在本发明的实施例中，构图或构图工艺可只包括光刻工艺，或包括光刻工艺以及刻蚀步骤，或者可以包括打印、喷墨等其他用于形成预定图形的工艺。光刻工艺是指包括成膜、曝光、显影等工艺过程，利用光刻胶、掩模板、曝光机等形成图形。可根据本发明的实施例中所形成的结构选择相应的构图工艺。
例如，如图4a和图5所示，该触摸屏还可包括可充电电池193。控制电路191可用以控制透明薄膜光伏电池150是否对可充电电池193进行充电。
例如，如图4a和图5所示，控制电路191还可包括光感单元192，其用于侦测光线的强弱，以控制是否对可充电电池193进行充电。
例如，如图6所示，给出本实施例提供的一种触摸屏的控制流程示意图。该控制流程可如下。
当有足够强度的光照时，透明薄膜光伏电池产生电流。控制电路检测触摸屏是否正在工作。如果触摸屏正在工作，则控制电路控制透明薄膜光伏电池不给可充电电池充电。如果触摸屏并没有工作，控制电路继续检测可充电电池是否充满电。如果可充电电池没有充满，控制电路则控制透明光伏电池 给可充电电池充电。通过上述的控制流程，本发明至少一实施例提供的触摸屏能够在有足够光照的情况下，当触摸屏没有工作的时候，可以给可充电电池充电将电能储存起来。由此，大大地延长触摸屏的使用时间，减少外部电源充电次数。
需要说明的是，本发明实施例提供的触摸屏的控制流程不限于此。例如，在触摸屏工作时，也可以给可充电电池充电。如此，可以实现持久续航的效果，甚至可以实现只依靠薄膜光伏电池来给可充电电池充电，无需外部电源充电的效果。如果透明薄膜光伏电池能够产生足够的电流，也可以直接将该电流接入控制电路，以控制触摸屏的工作。
实施例二
本实施例提供一种触摸屏，其为一种On-Cell电容式触摸显示面板。如图7a所示，该触摸屏包括第一基板210、第二基板220，设置在第一基板210和第二基板220之间的液晶层211、设置在第二基板220背向液晶层211的一侧上的多个触控感应电极231和多个触控驱动电极232、设置在多个触控感应电极231和多个触控驱动电极232上的透明绝缘层240、设置在透明绝缘层240上的p型掺杂的石墨烯层252、设置在p型掺杂的石墨烯层252上的石墨烯层253、以及设置在石墨烯层253上的n型掺杂的石墨烯层251。可在n型掺杂的石墨烯层251上设置盖板280。
例如，该透明绝缘层240的材质可参见实施例一中关于透明绝缘层的描述，在此不再赘述。
例如，该n型掺杂的石墨烯层251和该p型掺杂的石墨烯层252可以用实施例一所述的制备方法制备。本实施例中的第二基板即为实施例一中的衬底基板。
例如，该石墨烯层可以用但不限于以下步骤制备：
步骤(1)、在金属基底上形成一层石墨烯层。例如，可采用化学气相沉积法形成石墨烯层，但不限于此。例如，金属基底可以为铜箔或镍箔，但不限于此。
步骤(2)、在形成在金属基底上的石墨烯层上形成聚甲基丙烯酸甲酯(PMMA)膜。例如，该步骤可如下：可在形成在基底上的n型掺杂的石墨烯层表面滴涂含聚甲基丙烯酸甲酯(PMMA)的有机溶剂溶液，使用匀胶机， 使含PMMA的有机溶剂溶液均匀包覆石墨烯薄膜，再将金属基底放在加热台上，烘干溶剂，获得PMMA膜。
步骤(3)、去除金属基底。例如可采用刻蚀液将基底腐蚀掉。例如，刻蚀液可以为FeCl3溶液、Fe(NO3)3溶液、Fe2(SO4)3溶液。例如，刻蚀液浓度范围可以为0.5～2mol/L。
步骤(4)、将PMMA膜上的石墨烯层转移到第二基板(衬底基板)上。石墨烯具有较强的物理吸附能力，故而可吸附到第二基板(衬底基板)上。
步骤(5)、去除PMMA膜。例如，可采用溶剂将PMMA膜溶解，溶剂例如可以采用丙酮。也可以采用退火的方式去除PMMA膜。
例如，该石墨烯层制备过程还可包括步骤(6)、采用光刻工艺形成所需图形。例如，步骤(7)可在上述步骤(1)之后、步骤(2)之前进行，但不限于此。例如，石墨烯层253为i层，n型掺杂的石墨烯层251、石墨烯层253与p型掺杂的石墨烯层252组成透明薄膜光伏电池250。i层可作为光电流生成层及输送层，n型掺杂的石墨烯层和p型掺杂的石墨烯层可为生成促进i层中载流子漂移的内建电场，收集光生载流子的电极层。n型掺杂的石墨烯层251、石墨烯层253与p型掺杂的石墨烯层252之间形成pin结构。需要说明的是，本实施例中的透明薄膜光伏电池也可以不包括i层，如图7b所示，由n型掺杂的石墨烯层251及p型掺杂的石墨烯层252组成pn结构的透明薄膜光伏电池250。环境光和/或透过第二基板220的背光经过透明薄膜光伏电池250时，该透明薄膜光伏电池250可以产生电流为该触摸屏供电和/或充电。
例如，透明薄膜光伏电池250可以与由触控感应电极231和触控驱动电极232组成的触控电极层的位置互换。
需要说明的是，本发明实施例的触摸屏中的第二基板可包括第一区域和第二区域，透明薄膜光伏电池的n型掺杂的石墨烯层和p型掺杂的石墨烯层也可分别通过第一引线和第二引线与控制电路或驱动IC相连，也可设置第一电极和第二电极，控制电路也可包括光感单元，透明薄膜光伏电池也可包括多个子透明薄膜光伏电池。有关第一区域、第二区域、第一引线、第二引线、第一电极、第二电极、控制电路、光感单元、驱动IC、n型掺杂的石墨烯层、p型掺杂的石墨烯层、触控感应电极、触控驱动电极、子透明薄膜光伏电池 以及透明薄膜光伏电池给触摸屏充电的情形等均可参见实施例一的相关附图及相关描述。在此不再赘述。
本实施例的触摸屏中的触控电极层的结构和布局与实施例一的触控电极层相同或相类似，本实施例中的第二基板220既作为液晶触摸屏的对置基板(对置基板与阵列基板相对设置，例如对置基板可为彩膜基板)，又作为薄膜光伏电池的衬底基板。由此可节省材料，减少制作工艺步骤，从而可节省成本。
实施例三
本实施例提供一种触摸屏，其为一种On-Cell电容式触摸显示屏。如图8所示，该触摸屏包括第一基板310、第二基板320、以及设置在第一基板310和第二基板320之间的液晶层311。该触摸屏还包括设置在第一基板310面向液晶层311的一侧上的多个触控驱动电极332、设置在第二基板320背向液晶层311的一侧的多个触控感应电极331、设置在多个触控感应电极331上的透明绝缘层340、设置在透明绝缘层340上的n型掺杂的石墨烯层352、以及设置在n型掺杂的石墨烯层352上的p型掺杂的石墨烯层351。例如，在p型掺杂的石墨烯层351层上设置有盖板380。
例如，该透明绝缘层3的材质可参见实施例一中关于透明绝缘层的描述，在此不再赘述。
例如，该p型掺杂的石墨烯层351和该n型掺杂的石墨烯层352可以用实施例一所述的制备方法制备。本实施例中的第二基板即为实施例一中的衬底基板。
例如，p型掺杂的石墨烯层351与n型掺杂的石墨烯层352组成透明薄膜光伏电池350。p型掺杂的石墨烯层351与n型掺杂的石墨烯层352之间形成pn结。环境光和/或透过第二基板320的背光经过透明薄膜光伏电池350时，该透明薄膜光伏电池350可以产生电流为该触摸屏供电和/或充电。
需要说明的是，本发明实施例的触摸屏中的第二基板可包括第一区域和第二区域，组成透明薄膜光伏电池的n型掺杂的石墨烯层和p型掺杂的石墨烯层也可分别通过第一引线和第二引线与控制电路或驱动IC等相连，也可设置第一电极和第二电极，控制电路也可包括光感单元，透明薄膜光伏电池也可包括多个子透明薄膜光伏电池。有关第一区域、第二区域、第一引线、第 二引线、第一电极、第二电极、控制电路、光感单元、驱动IC、n型掺杂的石墨烯层、p型掺杂的石墨烯层、子透明薄膜光伏电池以及透明薄膜光伏电池给触摸屏充电的情形等均可参见实施例一的相关附图及相关描述。在此不再赘述。
需要说明的是，本实施例的触摸屏中的触控感应电极331与触控驱动电极332异层设置。例如，多个触控感应电极231可沿第一方向延伸，多个触控驱动电极232可沿第二方向延伸。例如，第一方向垂直于第二方向。多个触控感应电极之间相互绝缘，多个触控驱动电极之间相互绝缘。
另外，本实施例的触摸屏中的第二基板320既作为液晶显示屏的对置基板，也作为薄膜光伏电池的衬底基板。由此可节省材料，减少制作工艺步骤，从而节省了成本。
实施例四
本实施例提供一种触摸屏。其为一种内嵌式触摸屏。如图9所示，该触摸屏包括第一基板410、第二基板420、以及设置在第一基板410和第二基板420之间的液晶层411。该触摸屏还包括设置在第一基板410面向液晶层411的一侧上的多个触控驱动电极432、设置在第二基板420面向液晶层411的一侧上的多个触控感应电极431、设置在第二基板420背向液晶层411的一侧上的p型掺杂的石墨烯层452、以及设置在p型掺杂的石墨烯层452上的n型掺杂的石墨烯层451。透明薄膜光伏电池包括p型掺杂的石墨烯层和n型掺杂的石墨烯层。透明薄膜光伏电池和触控电极层(触控感应电极层)分别设置在第二基板的两侧。
需要说明的是，本实施例中，相对于实施例三来说，只是调整了触控感应电极的位置，将其置于液晶盒内，形成一种内嵌式触摸屏。其余例如，有关第一区域、第二区域、第一引线、第二引线、第一电极、第二电极、控制电路、光感单元、驱动IC、n型掺杂的石墨烯层、p型掺杂的石墨烯层、子透明薄膜光伏电池以及透明薄膜光伏电池给触摸屏充电的情形等与实施例三相同。
本实施例的触摸屏中的第二基板420既作为液晶显示屏的对置基板，也作为透明薄膜光伏电池的衬底基板。另外，由p型掺杂的石墨烯层452和n型掺杂的石墨烯层451组成的透明薄膜光伏电池450与触控感应电极431形 成在第二基板420的两侧，无需另外再形成一层透明绝缘层，由此可节省材料，减少制作工艺步骤，从而节省成本。
实施例五
本实施例提供一种触摸屏。如图10所示。该触摸屏包括第一基板510、设置在第一基板510上的发光单元层511、第二基板520、设置在第二基板520背向发光单元层511的一侧上的多个触控感应电极531和多个触控感应电极532、设置在多个触控感应电极531和多个触控感应电极532上的透明绝缘层540、设置在透明绝缘层540上的p型掺杂的石墨烯层552、设置在p型掺杂的石墨烯层552上的石墨烯层553、以及设置在石墨烯层553上的n型掺杂的石墨烯层551。
例如，第一基板可以是阵列基板，第二基板可以是OLED封装盖板或OLED封装膜。
例如，该透明绝缘层540的材质可参见实施例一中关于透明绝缘层的描述，在此不再赘述。
例如，该n型掺杂的石墨烯层551与该p型掺杂的石墨烯层552可以用实施例一所述的制备方法制备。
例如，该石墨烯层553可以用实施例二所述的方法制备。
本实施例中，石墨烯层553为i层，与n型掺杂的石墨烯层551和p型掺杂的石墨烯层552可形成pin结构的透明薄膜光伏电池550。环境光和/或发光单元层511发出的光经过透明薄膜光伏电池550时，该透明薄膜光伏电池550可以产生电流为该触摸屏供电和/或充电。
需要说明的是，本实施例中薄膜光伏电池也可不包括i层，可由n型掺杂的石墨烯层551和p型掺杂的石墨烯层552形成pn结构的透明薄膜光伏电池。
例如，透明薄膜光伏电池550可以与由触控感应电极531和触控驱动电极532组成的触控电极层的位置互换。
需要说明的是，本实施例的触摸屏中的触控电极层的结构和布局可与实施例二的触控电极层相同或相类似。本实施例的触摸屏中的第二基板可包括第一区域和第二区域，透明薄膜光伏电池的n型掺杂的石墨烯层和p型掺杂的石墨烯层也可分别通过第一引线和第二引线与控制电路或驱动IC相连，也 可设置第一电极和第二电极，控制电路也可包括光感单元，透明薄膜光伏电池也可包括多个子透明薄膜光伏电池。需要说明的是，有关第一引线、第二引线、第一电极、第二电极、控制电路、光感单元、n型掺杂的石墨烯层、p型掺杂的石墨烯层、触控感应电极、触控驱动电极、子透明薄膜光伏电池以及透明薄膜光伏电池给触摸屏充电的情形等均可参见实施例一的相关附图及相关描述。在此不再赘述。
本实施例中的第二基板520既起到OLED触摸屏封装基板或封装膜的作用，又作为薄膜光伏电池的衬底基板。由此可节省材料，减少制作工艺步骤，从而可节省成本。
实施例六
本实施例提供一种触摸屏。如图11所示，该触摸屏包括第一基板610、第二基板620、设置在第一基板610上的发光单元611、设置在第二基板620面向发光单元层611的一侧上的多个触控感应电极631和多个触控感应电极632、设置在多个触控感应电极631和多个触控感应电极632面向发光单元层611的一侧的透明绝缘层640，设置在第二基板620背向发光单元层611一侧表面上的p型掺杂的石墨烯层652、设置在p型掺杂的石墨烯层652上的石墨烯层653、以及设置在石墨烯层653上的n型掺杂的石墨烯层651。可在上述结构上设置盖板680。
例如，第一基板可以是阵列基板；第二基板可以是OLED封装盖板或OLED封装膜。
例如，该透明绝缘层640的材质可参见实施例一中关于透明绝缘层的描述，在此不再赘述。
例如，该n型掺杂的石墨烯层651与该p型掺杂的石墨烯层652可以用实施例一所述的制备方法制备。
例如，例如，该石墨烯层653可以用实施例二提供的制备石墨烯层的方法制备。
本实施例中，p型掺杂的石墨烯层652、石墨烯层653、和n型掺杂的石墨烯层651形成pin结构的透明薄膜光伏电池650。环境光和/或发光单元层611发出的光经过透明薄膜光伏电池650时，该透明薄膜光伏电池650可以产生电流为该触摸屏供电和/或充电。
例如，透明薄膜光伏电池650可以与由触控感应电极631和触控驱动电极632组成的触控电极层的位置互换。
需要说明的是，本发明实施例的触摸屏中的第二基板可包括第一区域和第二区域，组成透明薄膜光伏电池的n型掺杂的石墨烯层和p型掺杂的石墨烯层也可分别通过第一引线和第二引线与控制电路或驱动IC相连，也可设置第一电极和第二电极，控制电路也可包括光感单元，透明薄膜光伏电池也可包括多个子透明薄膜光伏电池。有关第一区域、第二区域、第一引线、第二引线、第一电极、第二电极、控制电路、光感单元、n型掺杂的石墨烯层、p型掺杂的石墨烯层、触控感应电极、触控驱动电极、子透明薄膜光伏电池以及透明薄膜光伏电池给触摸屏充电的情形等均可参见实施例一的相关附图及相关描述。在此不再赘述。
需要说明的是，第二基板620为封装基板的情况下，本实施例的触摸屏中的触控电极层的结构和布局与实施例一的触控电极层相同或相类似，本实施例中的第二基板620既可作为OLED触摸屏的封装基板，又可作为薄膜光伏电池和触控电极层的衬底基板，由此可节省材料，减少制作工艺步骤，从而节省了成本。
需要说明的是，本发明实施例中的发光单元层可包括多个发光单元，每个发光单元例如包括发光层、阴极、阳极，还可包括空穴传输层、电子传输层、空穴注入层、电子注入层等。
本发明实施例的触摸屏采用石墨烯薄膜光伏电池，当环境光和/或触摸屏本身发出的光经过该石墨烯薄膜光伏电池时，能够产生电流为触摸屏供电/充电从而延长触摸屏的使用时间。由于石墨烯是已知的世上最薄、最坚硬的纳米材料，它几乎是完全透明的，只吸收2.3％的光；将其做成的石墨烯薄膜光伏电池形成在触摸屏中时，既不会大大地增加触摸屏的厚度，也不会过多影响触摸屏的光透过率，还可以起到保护触摸屏的作用，可以广泛地应用到各类触摸屏中。另外，通过合理的配置石墨烯薄膜光伏电池，可无需另外再形成一层透明绝缘层，由此可节省材料，减少制作工艺步骤，从而节省成本，并且具有较小的厚度。在追求轻薄化的市场环境下，具有较好的市场前景。
需要说明的是，本发明所有实施例的触摸屏中的透明薄膜光伏电池既可以采用pn结构的石墨烯薄膜光伏电池，也可以采用pin结构的石墨烯薄膜光 伏电池。
实施例七
本实施例提供一种显示屏。如图12所示，该显示屏包括第一基板710、第二基板720、设置在第一基板710上的发光单元层711、设置在第二基板上的p型掺杂的石墨烯层752、设置在p型掺杂的石墨烯层752上的石墨烯层753、以及设置在石墨烯层753上的n型掺杂的石墨烯层751。在n型掺杂的石墨烯层751上可设置盖板780。
例如，第一基板可以是阵列基板，第二基板可以是OLED封装盖板或OLED封装膜。
例如，该n型掺杂的石墨烯层751与该p型掺杂的石墨烯层752可以用实施例一所述的制备方法制备。
例如，该石墨烯层753可以用实施例二提供的制备石墨烯层的方法制备。
例如，p型掺杂的石墨烯层752、石墨烯层753、和n型掺杂的石墨烯层751形成pin型的透明薄膜光伏电池750。环境光和/或发光单元层711发出的光经过透明薄膜光伏电池750时，该透明薄膜光伏电池750可以产生电流为该显示屏供电和/或充电。
例如，由p型掺杂的石墨烯层752、石墨烯层753、和n型掺杂的石墨烯层751形成pin型的透明薄膜光伏电池750可以形成在第二基板720面向发光单元层711的一侧，且在该透明光伏薄膜电池750与该发光单元层711之间形成有一层透明绝缘层。
例如，p型掺杂的石墨烯层752与n型掺杂的石墨烯层751的位置可以互换，与夹设于之间的石墨烯层753形成pin型的透明薄膜光伏电池750。
例如，也可以不设置石墨烯层753，透明薄膜光伏电池只包括p型掺杂的石墨烯层752和n型掺杂的石墨烯层751。
例如，第二基板至少包括第一区域和第二区域，第二区域邻接且环绕第一区域。例如，第一区域为显示区域，第二区域为周边区域。透明薄膜光伏电池可整面设置在第一区域内。例如，n型掺杂的石墨烯层和p型掺杂的石墨烯层分别经第一引线和第二引线连接至控制电路。
例如，透明薄膜光伏电池可包括多个子透明薄膜光伏电池。例如，每个子透明薄膜光伏电池呈条状。多个子透明薄膜光伏电池设置在第一区域内， 相邻的子透明薄膜光伏电池之间具有间隔。每个子透明薄膜光伏电池中的n型掺杂的石墨烯层和p型掺杂的石墨烯层可分别经第一引线和第二引线连接至控制电路。例如，控制电路也可替换为驱动IC。即每个子透明薄膜光伏电池中的n型掺杂的石墨烯层和p型掺杂的石墨烯层分别经第一引线和第二引线连接至驱动IC。例如，第一引线和n型掺杂的石墨烯层同层设置，第二引线和p型掺杂的石墨烯层同层设置。第一引线和第二引线相互错开。例如，当有足够的光强照射到透明薄膜光伏电池的时候，每个子透明光伏薄膜电池产生的电流可分别经第一引线和第二引线直接连接到驱动IC进行供电。由此，显示屏的使用时间可以得到延长。
需要说明的是，该子透明薄膜光伏电池的形状不限于条状，还可以是除了条状的其他形状，如梳齿型、波浪形、三角形、梯形等。透明薄膜光伏电池部分设置在显示区域的情况下，其覆盖范围和比例可以根据实际需要的开口率进行调节。例如，当需要较高的开口率时，子透明薄膜光伏电池之间可以设置较大的间隔。当开口率足够时，子透明薄膜光伏电池之间可以设置较小的间距。
例如，该显示屏还包括第一电极和第二电极，透明薄膜光伏电池的n型掺杂的石墨烯层经第一电极与控制电路相连接。透明薄膜光伏电池的p型掺杂的石墨烯层经第二电极与控制电路相连接。例如，第一电极和第二电极可同层间隔设置。
例如，该显示屏还可包括可充电电池。控制电路用以控制透明薄膜光伏电池是否对可充电电池进行充电。
例如，控制电路还可包括光感单元，其用于侦测光线的强弱，以控制是否对可充电电池进行充电。
例如，本实施例提供一种显示屏的控制流程。该控制流程可如下：当有足够强度的光照时，透明薄膜光伏电池产生电流；控制电路检测显示屏是否正在工作，如果显示屏正在工作，则控制电路控制透明薄膜光伏电池不给可充电电池充电，如果显示屏并没有工作，控制电路继续检测可充电电池是否充满电，如果可充电电池没有充满，控制电路则控制透明光伏电池给可充电电池充电。通过上述的控制流程，本发明实施例提供的显示屏能够在有足够光照的情况下，当显示屏没有工作的时候，可以给可充电电池充电将电能储 存起来。由此，大大地延长显示屏的使用时间，减少充电次数。
需要说明的是，本发明实施例提供的显示屏的控制流程不限于此。例如，在显示屏工作时，也可以给可充电电池充电。如此，可以实现持久续航的效果，甚至可以实现只依靠薄膜光伏电池来给可充电电池充电，无需外部电源充电的效果。如果透明薄膜光伏电池能够产生足够的电流，也可以直接将该电流接入控制电路，以控制显示屏的工作。
实施例八
本实施例提供一种显示屏。如图13所示，该显示屏包括第一基板810、第二基板820、设置在第一基板810和第二基板820之间的液晶层811、设置在第二基板820背向液晶层811一侧表面上的p型掺杂的石墨烯层852、设置在p型掺杂的石墨烯层852上的n型掺杂的石墨烯层851。在n型掺杂的石墨烯层851上可设置盖板880。
例如，第一基板可以是阵列基板，第二基板可以是对置基板。
例如，该n型掺杂的石墨烯层851与该p型掺杂的石墨烯层852可以用实施例一所述的制备方法制备。
例如，p型掺杂的石墨烯层852与n型掺杂的石墨烯层851形成pn结构的透明薄膜光伏电池850。环境光和/或透过第二基板820的背光经过透明薄膜光伏电池850时，该透明薄膜光伏电池850可以产生电流为该显示屏供电和/或充电。
例如，由p型掺杂的石墨烯层852和n型掺杂的石墨烯层851形成pn型的透明薄膜光伏电池850可以形成在第二基板820面向液晶层811的一侧的表面上。
例如，p型掺杂的石墨烯层852与n型掺杂的石墨烯层851的位置可以互换。
需要说明的是，本发明实施例的显示屏中的第二基板可包括第一区域和第二区域，组成透明薄膜光伏电池的n型掺杂的石墨烯层和p型掺杂的石墨烯层也可分别通过第一引线和第二引线与控制电路或驱动IC相连，也可设置第一电极和第二电极，控制电路也可包括光感单元，透明薄膜光伏电池也可包括多个子透明薄膜光伏电池。有关第一区域、第二区域、第一引线、第二引线、第一电极、第二电极、控制电路、光感单元、驱动IC、n型掺杂的石 墨烯层、p型掺杂的石墨烯层、子透明薄膜光伏电池以及透明薄膜光伏电池给显示屏充电的情形等均可参见实施例七的相关描述。在此不再赘述。
本发明实施例提供的显示屏采用了石墨烯透明薄膜光伏电池，当环境光和/或显示屏发出的光经过该石墨烯透明薄膜光伏电池时，能够产生电流为该显示屏供电/充电从而延长显示屏的使用时间。由于石墨烯是已知的世上最薄、最坚硬的纳米材料，它几乎是完全透明的，只吸收2.3％的光；将其做成的石墨烯薄膜光伏电池形成在显示屏中时，既不会大大地增加显示屏的厚度，也不会过多影响显示屏的光透过率，还可以起到保护显示屏的作用，可以广泛地应用到各类触摸屏、显示屏、触摸显示屏中。
实施例九
本实施例提供一种触摸显示装置，其包括实施例一至六提供的任意一种触摸屏，或者包括实施例七或实施例八提供的任意一种显示屏。显然，本实施例的触摸显示装置还可以包括其他结构，此处不再赘述。
本发明至少一实施例的触摸显示装置采用了石墨烯薄膜光伏电池，将其集成在触摸屏中，当环境光和/或显示模组发出的光经过该石墨烯薄膜光伏电池时，能够产生电流为触摸屏/显示屏/触摸显示装置供电/充电从而延长触摸屏/显示屏/触摸显示装置的使用时间。由于石墨烯是已知的世上最薄、最坚硬的纳米材料，它几乎是完全透明的，只吸收2.3％的光。将其做成的石墨烯薄膜光伏电池形成在触摸屏/显示屏/触摸显示装置中时，既不会大大地增加触摸屏/显示屏/触摸显示装置的厚度，也不会过多影响触摸屏的光透过率，还可以起到保护触摸屏的作用。另外，可通过合理的配置石墨烯薄膜光伏电池，无需另外再形成一层透明绝缘层，由此可节省材料，减少制作工艺步骤，从而节省成本，并且具有较小的厚度。在追求轻薄化的市场环境下，具有较好的市场前景。
需要说明的是，(1)、本发明各实施例中，除非另作定义，此处使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”、“一”或者“该”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物 件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。(2)、在用于描述本发明的各实施例的各附图中，层或区域的厚度可能被放大。可以理解，当诸如层、膜、区域或基板之类的元件被称作位于另一元件“上”时，该元件可以“直接”位于另一元件“上”，或者可以存在中间元件。(3)、在上述实施方式的描述中，具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。(4)、本发明各实施例的n型掺杂的石墨烯层和p型掺杂的石墨烯层的位置可互换。(5)、本发明各实施例的触摸屏/显示屏/触摸显示屏中的透明薄膜光伏电池既可以采用pn结构的透明薄膜光伏电池，也可以采用pin结构的透明薄膜光伏电池。(6)、本发明各实施例中，对置基板与阵列基板相对设置，对置基板和阵列基板分别为显示面板的上下两个基板，通常在阵列基板上形成薄膜晶体管阵列、像素电极等显示结构，在对置基板上形成彩色树脂。例如，对置基板为彩膜基板。(7)、本发明各实施例中，如果采用发光单元层，则发光单元层可包括多个发光单元，每个发光单元例如可以包括发光层、阴极、阳极，还可包括空穴传输层、电子传输层、空穴注入层、电子注入层等。(8)、本发明各实施例及附图只描述或示出本申请相关的部分，其余未作描述部分请参见通常设计。(9)、需要说明的是，为了便于区分，附图中第一引线用实线表示，第二引线用虚线来表示。(10)、本发明各实施例提供的触摸显示面板可以用于：液晶面板、电子纸、液晶电视、液晶显示器、数码相框、手机、手表、平板电脑等任何具有触摸及显示功能的产品或部件。(11)、本发明各实施例及附图以互电容式的触控电极结构为例进行说明，触控电极层中的触控电极结构可采用通常的结构，并不限于本公开中描述的几种。本发明各实施例以互电容式触摸屏为例进行说明。互电容式触摸屏的触控电极层包括横向电极和/或纵向电极。通常横向电极和纵向电极位于不同层，横向电极所在的层和纵向电极所在的层之间可设置绝缘层。两组电极交叉的地方将会形成电容。当手指触摸到互电容式电容屏时，影响了触摸点附近两个电极之间的耦合，从而改变了这两个电极之间的电容量。通过检测这种电容值的变化从而判断出触控位置(例如，可通过触控侦测芯片检测电容值的变化)。但并不限于互 电容式的触控电极结构，亦可采用自电容式的触控电极结构。例如，触控电极层包括触控电极阵列，各触控电极之间相互绝缘，这些触控电极分别与地构成电容。当手指触摸到自容式触摸屏时，手指的电容将会叠加到对应的触控电极上，通过检测各触控电极的电容值变化可以判断出触控位置(例如，可通过触控侦测芯片检测电容值的变化)。本发明对此不作限定。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。
本专利申请要求于2015年6月10日递交的中国专利申请第201510319716.2号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (13)

  1. 一种触摸屏，包括衬底基板以及设置在所述衬底基板上的触控电极层和透明薄膜光伏电池，其中，
    所述触控电极层和所述透明薄膜光伏电池彼此层叠且位于所述衬底基板的同一侧，所述触控电极层与所述透明薄膜光伏电池之间设置有透明绝缘层；或者，
    所述触控电极层与所述透明薄膜光伏电池分别设置在所述衬底基板的两侧；
    所述透明薄膜光伏电池包括n型掺杂的石墨烯层和p型掺杂的石墨烯层。
  2. 根据权利要求1所述的触摸屏，其中，所述透明薄膜光伏电池还包括石墨烯层，所述石墨烯层位于所述n型掺杂的石墨烯层和所述p型掺杂的石墨烯层之间。
  3. 根据权利要求1或2所述的触摸屏，还包括控制电路、第一引线和第二引线，
    其中，所述n型掺杂的石墨烯层和所述p型掺杂的石墨烯层分别经所述第一引线和所述第二引线连接至所述控制电路，所述第一引线和所述n型掺杂的石墨烯层同层设置，所述第二引线和所述p型掺杂的石墨烯层同层设置，所述第一引线和所述第二引线相互错开。
  4. 根据权利要求1-3任一项所述的触摸屏，还包括控制电路、第一电极和第二电极，
    其中，所述n型掺杂的石墨烯层和所述p型掺杂的石墨烯层分别经所述第一电极和所述第二电极连接至所述控制电路。
  5. 根据权利要求4所述的触摸屏，其中，所述第一电极和所述第二电极同层间隔设置。
  6. 根据权利要求3-5任一项所述的触摸屏，还包括可充电电池，其中，所述控制电路用以控制所述透明薄膜光伏电池是否对所述可充电电池进行充电。
  7. 根据权利要求6所述的触摸屏，其中，所述控制电路包括光感单元，所述光感单元用以侦测光线的强弱，以控制是否对所述可充电电池进行充电。
  8. 根据权利要求1-7任一项所述的触摸屏，其中，所述触控电极层包括多个触控驱动电极和/或多个触控感应电极。
  9. 根据权利要求1-8任一项所述的触摸屏，其中，所述透明绝缘层包括透明光学胶层、SiNxOy层、SiO2层、氧化铝层中的任意一种。
  10. 根据权利要求1-9任一项所述的触摸屏，其中，在所述触控电极层和所述透明薄膜光伏电池位于所述衬底基板的同一侧的情况下，所述衬底基板和所述触控电极层之间设置所述透明薄膜光伏电池，或者，所述衬底基板和所述透明薄膜光伏电池之间设置所述触控电极层。
  11. 根据权利要求1-10任一项所述的触摸屏，其中，所述衬底基板至少包括第一区域和第二区域，所述第二区域邻接且环绕所述第一区域，所述第一区域为触控区域，所述第二区域为周边区域，所述透明薄膜光伏电池整面设置在所述第一区域内，或者，所述透明薄膜光伏电池设置在部分所述第一区域内。
  12. 根据权利要求11所述的触摸屏，其中，所述透明薄膜光伏电池设置在部分所述第一区域内的情况下，所述透明薄膜光伏电池包括多个子透明薄膜光伏电池。
  13. 一种触摸显示装置，包括权利要求1-12任一项所述的触摸屏。
PCT/CN2015/091165 2015-06-10 2015-09-30 触摸屏及触摸显示装置 Ceased WO2016197490A1 (zh)

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