WO2016050007A1 - 触控显示面板和显示装置 - Google Patents

触控显示面板和显示装置 Download PDF

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Publication number
WO2016050007A1
WO2016050007A1 PCT/CN2015/070049 CN2015070049W WO2016050007A1 WO 2016050007 A1 WO2016050007 A1 WO 2016050007A1 CN 2015070049 W CN2015070049 W CN 2015070049W WO 2016050007 A1 WO2016050007 A1 WO 2016050007A1
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WO
WIPO (PCT)
Prior art keywords
substrate
display panel
touch
touch display
signal
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PCT/CN2015/070049
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English (en)
French (fr)
Inventor
许军
李虎
Original Assignee
京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥鑫晟光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to EP15787431.4A priority Critical patent/EP3203358A4/en
Priority to US14/770,676 priority patent/US10254898B2/en
Publication of WO2016050007A1 publication Critical patent/WO2016050007A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers
    • 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

Definitions

  • Embodiments of the present invention relate to a touch display panel and a display device.
  • the touch panel can be roughly classified into the following types according to different sensing modes: a resistive touch panel, a capacitive touch panel, an optical touch panel, an acoustic wave touch panel, and an electromagnetic touch panel.
  • the principle of the conventional optical touch panel is to use the light source to receive the interrupting principle, and the panel is filled with the light source and the receiver and arranged in a matrix. When the light is blocked, it is known that the position of the signal receiver is not received, and the precise position is determined.
  • the components of the optical touch panel include a glass substrate, an infrared light source, and an infrared receiver.
  • the structure is mainly to arrange the infrared emitting device on the left and lower sides of the glass panel, and to set the infrared receiver on the right side and the upper side.
  • an optical touch panel needs to simultaneously provide an infrared emitting source and an infrared receiver, which are complicated in structure and high in cost.
  • An object of the present invention is to provide a touch display panel and a display device to solve the problem that the conventional optical touch panel has a complicated structure and high cost.
  • At least one embodiment of the present invention provides a touch display panel including a first substrate and a second substrate disposed opposite to each other, a black matrix, and a plurality of photosensitive elements, a plurality of scanning lines, and a plurality of stripes formed on the second substrate.
  • Signal line The black matrix is formed on the first substrate and transmits only radiation of a first wavelength range, and the photosensitive element is blocked by the black matrix; each of the scan lines corresponds to a photosensor One end of each of the signal lines correspondingly connected to a second end of the photosensitive element; the photosensitive element generates a signal according to the received radiation light of the first wavelength range and a scan signal provided by the scan line The touch signal is supplied to the corresponding signal line.
  • the black matrix formed on the first substrate can transmit the radiation of the first wavelength range
  • the photosensitive element formed on the second substrate can receive The illuminating light of the first wavelength range is turned on and converts the scan signal into a touch signal, thereby implementing a touch function.
  • the material of the black matrix may be a germanium crystal material.
  • the first wavelength range may be 2 to 12 [mu]m.
  • natural light is blocked by the black matrix, and incident light of a human radiation wavelength can be transmitted by the black matrix.
  • the material of the photosensitive member may be an infrared photosensitive material.
  • the photosensitive element of the infrared photosensitive material when the finger touches the touch display panel, can generate a touch signal according to the incident light transmitted through the wavelength of the human body of the black matrix.
  • each of the scan lines and each of the signal lines may be blocked by the black matrix.
  • each of the scan lines and each of the signal lines does not affect the aperture ratio of the pixels.
  • the photosensitive elements can be evenly distributed over the second substrate.
  • the uniformly distributed photosensitive elements can improve the accuracy of touch control.
  • the touch display panel may further include a plurality of thin film transistors (TFTs) formed on the second substrate, the number of the TFTs being greater than or equal to the number of the photosensitive elements, each of the photosensitive elements being formed on Above the TFT.
  • TFTs thin film transistors
  • the touch signal can be generated by using less of the photosensitive elements to meet the requirements of a certain touch, thereby simplifying the structure of the touch display panel and reducing the cost.
  • the touch display panel may be a liquid crystal display panel or an OLED display panel.
  • the touch display panel may further include a liquid crystal layer formed between the first substrate and the second substrate; the first substrate is a color filter substrate, and the second substrate is an array substrate, A plurality of strip-shaped color resists are further formed on the first substrate, and the black matrix is formed between adjacent color resists.
  • Embodiments of the present invention provide the touch display panel for a liquid crystal display device.
  • the touch display panel may further include an organic electroluminescent layer formed on the second substrate; the first substrate is a package substrate or a color filter substrate, and the second substrate is an array substrate; When the first substrate is a color filter substrate, a plurality of strip-shaped color resists are further formed on the first substrate, and the black matrix is formed between adjacent color resistors.
  • OLED organic light emitting diode
  • the touch display panel further includes an integrated circuit component formed on the second substrate, the integrated circuit component determining a touch bit according to coordinates of the photosensitive component generating the touch signal Set.
  • the embodiment of the invention provides a display device, which comprises the touch display panel provided by any of the above embodiments.
  • FIG. 1 is a schematic structural diagram of a touch display panel according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of connection of scan lines, signal lines, and photosensitive elements in a touch display panel according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a second touch display panel according to an embodiment of the present invention.
  • FIG. 5 is a schematic view showing a transmission spectrum of a black matrix of a germanium crystal according to an embodiment of the present invention.
  • Fig. 6 is a schematic view showing a receiving spectrum of an infrared photosensitive element in an embodiment of the present invention.
  • a touch display panel includes a first substrate and a second substrate disposed opposite to each other, a black matrix formed on the first substrate, a plurality of photosensitive elements formed on the second substrate, and a plurality of scans Line and multiple signal lines.
  • the black matrix only transmits the radiation of the first wavelength range, and the photosensitive elements are blocked by the black matrix; each scan line corresponds to the first end of a photosensitive element, each signal The line is connected to the second end of the photosensitive element; the photosensitive element generates a touch signal according to the received radiation signal of the first wavelength range and the scan signal provided by the scan line, and provides the touch signal to the corresponding signal line.
  • the black matrix formed on the first substrate can transmit the radiation of the first wavelength range, and the photosensitive element generates the touch signal according to the scan signal and the radiation of the first wavelength range.
  • the photosensitive element can be turned on when receiving the radiation of the first wavelength range, and the conductive element after the conduction generates a touch signal according to the scan signal and supplies the signal to the signal line, and finally the touch signal can be generated by the integrated circuit component.
  • the processing is performed to obtain the coordinates of the photosensitive element that generates the touch signal to determine the position of the touch, thereby implementing the touch function.
  • the touch structure in the touch display panel provided by the embodiment of the invention is implemented by a filterable black matrix, a photosensitive element, a scan line and a signal line, and can be adapted to the liquid crystal display panel and the OLED display panel.
  • the details are as follows.
  • a first touch display panel provided by an embodiment of the present invention includes a first substrate 1 and a second substrate 2 disposed opposite to each other.
  • the first substrate 1 is a color filter substrate
  • a plurality of strip-shaped color resistors 9 are formed on the first substrate
  • the second substrate 2 is an array substrate.
  • the touch display panel further includes a black matrix 3, a photosensitive element 4, a thin film transistor (TFT) 7 and a liquid crystal 8.
  • the black matrix 3 is formed on the first substrate 1 and located between adjacent color resistors 9, and the black matrix 3, only transmitting the first wavelength range of radiation, such as incident light of the human radiation wavelength; as shown in FIG. 2, the touch display panel further includes a plurality of photosensitive elements 4 and a plurality of scanning lines formed on the second substrate 2. 5 and the signal line 6, each of the scanning lines 5 is correspondingly connected to the first end of a photosensitive element 4, and each of the signal lines 6 is correspondingly connected to the second end of a photosensitive element 4.
  • the photosensitive element 4 generates a touch signal according to the received radiation light of the first wavelength range and the scanning signal provided by the scanning line 5 and supplies it to the corresponding signal line 6.
  • the photosensitive member 4 is in a non-conducting state when it is not received with the radiation of the first wavelength range, and is turned on when the radiation of the first wavelength range is received. Therefore, after the photosensitive element 4 receives the radiation of the first wavelength range, the scanning signal provided on the scanning line 5 is converted by the conducting photosensitive element 4, and the converted signal parameters (eg, voltage, current) are according to the photosensitive element 4. The characteristic changes, so the photosensitive element 4 will produce a touch signal similar to the scan signal and supply it to the signal line 6.
  • the black matrix 3 formed on the first substrate 1 can transmit the radiation of the first wavelength range, and the photosensitive element 4 generates the radiation according to the scanning signal and the first wavelength range.
  • Touch signal For example, the photosensitive element 4 can receive the first wavelength range When the radiant light is turned on, the photosensitive element 4 after the conduction generates a touch signal according to the scan signal and supplies the signal to the signal line 6. Finally, the touch signal can be processed by the integrated circuit component to obtain the light-sensitive signal for generating the touch signal. The coordinates of element 4 determine the location of the touch.
  • the touch signal outputted by the signal line can be provided to the integrated circuit component, and the coordinates of the position of the photosensitive component corresponding to each signal line can be pre-stored in the integrated circuit component, and can be obtained according to the touch signal output by the corresponding signal line.
  • the coordinates of the position of the photosensitive element connected to the signal line can further obtain the touch position of the photosensitive element that generates the touch signal, thereby implementing the touch function.
  • an embodiment of the present invention provides a second touch display panel including a first substrate 1 and a second substrate 2 disposed oppositely.
  • the first substrate 1 is a color filter substrate, and a plurality of strips are formed on the first substrate.
  • the color resist 9 and the second substrate 2 are array substrates.
  • the touch display panel further includes a black matrix 3, a photosensitive element 4, a TFT 7, and an organic electroluminescent layer 10.
  • the organic electroluminescent layer 10 is formed on the second substrate 2; the black matrix 3 is formed on the first substrate 1, The black matrix 3 is only transmitted through the illuminating light of the first wavelength range, for example, the incident light of the human body radiation wavelength; as shown in FIG. 2, the touch display panel further includes a second substrate 2
  • the plurality of photosensitive elements 4, the plurality of scanning lines 5 and the signal lines 6 are respectively connected to the first ends of the photosensitive elements 4, and each of the signal lines 6 is connected to the second end of the photosensitive elements.
  • the photosensitive element 4 generates a touch signal according to the received radiation light of the first wavelength range and the scanning signal provided by the scanning line 5 and supplies it to the corresponding signal line 6.
  • the photosensitive member 4 is in a non-conducting state when it is not received with the radiation of the first wavelength range, and is turned on when the radiation of the first wavelength range is received. Therefore, after the photosensitive element 4 receives the radiation of the first wavelength range, the scanning signal provided on the scanning line 5 is converted by the conducting photosensitive element 4, and the converted signal parameters (eg, voltage, current) are according to the photosensitive element 4. The characteristic changes, so the photosensitive element 4 will produce a touch signal similar to the scan signal and supply it to the signal line 6.
  • the black matrix 3 formed on the first substrate 1 can transmit the radiation of the first wavelength range, and the photosensitive element 4 is based on the scanning signal and the radiation of the first wavelength range.
  • the touch signal is generated.
  • the photosensitive element 4 can be turned on when receiving the radiation of the first wavelength range, and the conductive element 4 after the conduction generates a touch signal according to the scan signal and provides the signal to the signal line 6.
  • the touch signal is processed by the integrated circuit component to obtain the coordinates of the photosensitive element 4 that generates the touch signal to determine the position of the touch, thereby implementing the touch function.
  • the light source in the OLED display panel is red, green, and blue monochromatic OLED light corresponding to the pixel
  • the color of the first display substrate 1 in FIG. 3 is removed, that is, the first substrate 1 is packaged.
  • the other structures of the display panel are the same as those of the touch display panel shown in FIG. 3, and details are not described herein again.
  • the material of the black matrix 3 may be a germanium crystal material, and the first wavelength range is 2 to 12 ⁇ m.
  • natural light is blocked by the black matrix 3 in the first wavelength range, but the incident light of the human radiation wavelength can be transmitted by the black matrix 3.
  • the spectral contrast of incident light of self-color light and human radiation wavelength wherein the X axis represents the wavelength and the Y axis represents the light intensity (the specific light intensity value depends on the actual situation).
  • the natural light spectrum 11 has a wavelength in the range of 0.3 to 0.7 ⁇ m
  • the human radiation spectrum 12 has a wavelength in the range of 9 to 11 ⁇ m.
  • the black matrix 3 can transmit the first wavelength range of radiation, the first wavelength range is 2 to 12 ⁇ m, and the human body radiation wavelength ranges from 9 to 11 ⁇ m, so the black matrix 3 can block
  • the natural light transmits the human body radiation, thereby realizing the finger on the touch display panel, and the photosensitive element 4 can receive the human body radiation.
  • the material of the photosensitive member 4 may be an infrared photosensitive material.
  • FIG. 6 is a schematic diagram of the infrared light-sensitive material receiving spectrum, wherein the X-axis represents the wavelength and the Y-axis represents the light intensity (the specific light intensity value may be determined according to actual conditions).
  • the wavelength of the incident light is 9 to 11 ⁇ m
  • the infrared photosensitive material can be made conductive. Therefore, when the finger touches the touch display panel, the photosensitive element 4 of the infrared photosensitive material can be electrically connected according to the incident light of the wavelength of the human body transmitted through the black matrix 3.
  • the light intensity or transmittance represented by the Y-axis in FIGS. 4 to 6 is only for explaining the embodiment of the present invention, and does not limit the specific numerical range; for different incident light intensities or different black matrices, there may be The numerical value of the difference is large, but the change of the numerical value can be utilized according to the modification of the touch display panel provided by the embodiment of the present invention, and details are not described herein again.
  • each scanning line 5 and each signal line 6 are blocked by the black matrix 3.
  • each scan line 5 and each signal line 6 does not affect the aperture ratio of the pixel.
  • the photosensitive elements 4 are evenly distributed on the second substrate 2.
  • the uniformly distributed photosensitive element 4 can improve the accuracy of the touch.
  • the number of TFTs 7 may be greater than the number of photosensitive elements 4, each of which is formed in Above the TFT 7.
  • the touch signal can be generated by using less photosensitive elements 4 to meet the requirements of a certain touch, thereby simplifying the structure of the touch display panel and reducing the cost.
  • the touch display panel may further include an integrated circuit component 13 formed on the second substrate 2, and the integrated circuit component determines the touch position according to the coordinates of the photosensitive component that generates the touch signal, and details are not described herein.
  • the number of the photosensitive elements 4 in the touch display panel provided by the embodiment of the present invention may be determined according to actual conditions.
  • the touch accuracy is required to be high, the photosensitive member 4 may be disposed above each of the TFTs 7, and it is of course ensured that the scanning lines 5 and the signal lines 6 do not affect the pixel aperture ratio on the second substrate 2.
  • the touch accuracy is required to be low, the photosensitive member 4 can be disposed over a small number of TFTs 7.
  • the touch display panel is used to display a program icon for selection. In such an application scenario, the touch accuracy is low, and each icon corresponds to multiple pixels (ie, corresponding to multiple TFTs), so It is guaranteed that a small number of photosensitive elements can be evenly distributed within the range corresponding to the icon to meet the touch requirements.
  • the black matrix 3 formed on the first substrate 1 can transmit the radiation of the first wavelength range
  • the photosensitive element 4 formed on the second substrate 2 can receive the radiation of the first wavelength range.
  • the touch function can be realized by contacting the touch display panel with an object having a wavelength in the first wavelength range, thereby providing a touch display panel having a simple structure and a low cost.
  • the embodiment of the present invention provides a display device, which is a liquid crystal display device, and includes the touch display panel shown in FIG. 1 according to the first embodiment.
  • the black matrix formed on the first substrate can transmit the radiation of the first wavelength range
  • the photosensitive element formed on the second substrate can be turned on when receiving the radiation of the first wavelength range. Therefore, the touch function can be realized by contacting the touch display panel with an object having a wavelength in the first wavelength range, thereby providing a touch display panel having a simple structure and a low cost.
  • the embodiment of the present invention provides a display device, which is an OLED display device, and includes the touch display panel shown in FIG. 3 or a modification thereof.
  • the black matrix 3 formed on the first substrate 1 can transmit the radiation of the first wavelength range
  • the photosensitive element 4 formed on the second substrate 2 can receive the radiation of the first wavelength range.
  • Light is turned on; therefore, an object having a wavelength in the first wavelength range is in contact with the touch
  • the display panel can realize the touch function, thereby providing a touch display panel with a simple structure and low cost.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Electroluminescent Light Sources (AREA)
  • Position Input By Displaying (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

一种触控显示面板和显示装置，该触控显示面板包括相对设置的第一基板（1）和第二基板（2）、黑矩阵（3）以及形成于所述第二基板（2）上的多个光敏元件（4）、多条扫描线（5）和多条信号线（6），所述黑矩阵（3）形成于所述第一基板（1）上且仅透过第一波长范围的辐射光；所述光敏元件（4）被所述黑矩阵（3）遮挡；每一条所述扫描线（5）对应连接一所述光敏元件（4）的第一端，每一条所述信号线（6）对应连接一所述光敏元件（4）的第二端；所述光敏元件（4）根据接收到的所述第一波长范围的辐射光和所述扫描线（5）提供的扫描信号，生成触控信号并提供给相对应的所述信号线（6）。该触控显示面板结构简单、成本较低。

Description

触控显示面板和显示装置 技术领域
本发明的实施例涉及一种触控显示面板和显示装置。
背景技术
触控面板依照其感测方式的不同可大致分为以下几种：电阻式触控面板、电容式触控面板、光学式触控面板、声波式触控面板以及电磁式触控面板。
通常的光学式触控面板原理是利用光源接收遮断原理，将面板内布满光源与接收器并排列成矩阵。当光线遭遮断时，可得知收不到信号接收器的位置，进而确定其精确位置。光学式触控面板的组成元件包括：玻璃基板、红外线发射源、红外线接收器。其构造主要为将红外线发射装置配放在玻璃面板的左边及下侧，并在右边及上侧设置红外线接收器。当手指或接触物遮断红外线时，经由接收器所接收的信号，即可测出接触点的所在矩阵位置。
但是，通常光学式触控面板需要同时设置红外线发射源和红外线接收器，其结构复杂、成本高。
发明内容
本发明实施例的目的是提供一种触控显示面板和显示装置，以解决通常的光学式触控面板结构复杂、成本高的问题。
本发明至少一个实施例提供一种触控显示面板，包括相对设置的第一基板和第二基板、黑矩阵以及形成于所述第二基板上的多个光敏元件、多条扫描线和多条信号线。所述黑矩阵形成于所述第一基板上且仅透过第一波长范围的辐射光，所述光敏元件被所述黑矩阵遮挡；每一条所述扫描线对应连接一所述光敏元件的第一端，每一条所述信号线对应连接一所述光敏元件的第二端；所述光敏元件根据接收到的所述第一波长范围的辐射光和所述扫描线提供的扫描信号，生成一触控信号并提供给相对应的所述信号线。
本发明实施例中，形成于所述第一基板上的所述黑矩阵可以透过所述第一波长范围的辐射光，形成于所述第二基板上的所述光敏元件能够在接收到 该所述第一波长范围的辐射光时导通并将所述扫描信号转换为触控信号，从而实现触控功能。
例如，所述黑矩阵的材料可为锗晶体材料。
例如，所述第一波长范围可为2～12μm。本发明实施例中，在该所述第一波长范围内，自然光被所述黑矩阵阻挡，人体辐射波长的入射光可以由所述黑矩阵透过。
例如，所述光敏元件的材料可为红外光敏材料。本发明实施例中，手指触摸触控显示面板时，红外光敏材料的所述光敏元件能够根据透过所述黑矩阵的人体辐射波长的入射光生成触控信号。
例如，各所述扫描线和各所述信号线可被所述黑矩阵遮挡。本发明实施例中，各所述扫描线和各所述信号线不会影响像素的开口率。
例如，所述光敏元件可在所述第二基板上均匀分布。本发明实施例中，均匀分布的所述光敏元件能够提高触控的准确度。
例如，所述触控显示面板还可包括形成于所述第二基板的多个薄膜晶体管(TFT)，所述TFT的数量大于或等于所述光敏元件的数量，每一所述光敏元件形成于一所述TFT的上方。本发明实施例中，可在满足一定触控需要的情况下，以较少的所述光敏元件产生触控信号，以简化触控显示面板的结构，降低成本。
例如，所述的触控显示面板可为液晶显示面板或OLED显示面板。
例如，所述触控显示面板还可包括形成于所述第一基板和所述第二基板之间的液晶层；所述第一基板为彩膜基板，所述第二基板为阵列基板，所述第一基板上还形成多个条状色阻，所述黑矩阵形成于相邻所述色阻之间。本发明实施例提供用于液晶显示装置的所述触控显示面板。
例如，所述触控显示面板还可包括形成于所述第二基板上的有机电致发光层；所述第一基板为封装基板或彩膜基板，所述第二基板为阵列基板；所述第一基板为彩膜基板时，所述第一基板上还形成多个条状色阻，所述黑矩阵形成于相邻所述色阻之间。本发明实施例提供用于有机电致发光二极管(Organic Light Emission Display，OLED)显示装置的所述触控显示面板。
例如，所述触控显示面板还包括形成于所述第二基板上的集成电路元件，所述集成电路元件根据生成所述触控信号的所述光敏元件的坐标确定触摸位 置。
本发明实施例提供一种显示装置，包括如上任一实施例提供的所述的触控显示面板。
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为本发明实施例提供的第一种触控显示面板的结构示意图；
图2为本发明实施例提供的触控显示面板中扫描线、信号线和光敏元件的连接示意图；
图3为本发明实施例提供的第二种触控显示面板的结构示意图；
图4为本发明实施例中入射谱的示意图；
图5为本发明实施例中锗晶体的黑矩阵的透射谱的示意图；
图6为本发明实施例中红外光敏元件的接收谱的示意图。
附图标记：
1-第一基板；2-第二基板；3-黑矩阵；4-光敏元件；5-扫描线；6-信号线；7-薄膜晶体管(TFT)；8-液晶；9-色阻；10-有机电致发光层；11-自然光光谱；12-人体辐射光谱；13-集成电路元件。
具体实施方式
下面结合说明书附图对本发明实施例的实现过程进行详细说明。需要注意的是，自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
实施例一
本发明实施例提供的一种触控显示面板，包括相对设置的第一基板和第二基板；形成于第一基板上的黑矩阵；形成于第二基板上的多个光敏元件、多条扫描线和多条信号线。黑矩阵仅透过第一波长范围的辐射光，且光敏元件被黑矩阵遮挡；每一条扫描线对应连接一光敏元件的第一端，每一条信号 线对应连接一光敏元件的第二端；光敏元件根据接收到的第一波长范围的辐射光和扫描线提供的扫描信号，生成一触控信号并提供给相对应的信号线。
本发明实施例中，形成于第一基板上的黑矩阵可以透过第一波长范围的辐射光，该光敏元件根据扫描信号和第一波长范围的辐射光生成触控信号。例如，该光敏元件能够在接收到该第一波长范围的辐射光时导通，导通后的光敏元件根据扫描信号生成触控信号并提供给信号线，最终可以由集成电路元件对触控信号进行处理，得到生成该触控信号的光敏元件的坐标来确定触摸的位置，从而实现触控功能。
本发明实施例提供的触控显示面板中的触控结构由可滤光的黑矩阵、光敏元件、扫描线和信号线来实现，可适应于液晶显示面板和OLED显示面板。详细说明如下。
参见图1，本发明实施例提供的第一种触控显示面板包括相对设置的第一基板1和第二基板2。例如，第一基板1为彩膜基板，第一基板上形成有多个条状色阻9；第二基板2为阵列基板。
触控显示面板还包括黑矩阵3、光敏元件4、薄膜晶体管(Thin Film Transistor，TFT)7和液晶8，黑矩阵3形成于第一基板1上且位于相邻色阻9之间，黑矩阵3仅透过第一波长范围的辐射光，例如人体辐射波长的入射光；如图2所示，触控显示面板还包括形成于第二基板2上的多个光敏元件4、多条扫描线5和信号线6，每一条扫描线5对应连接一光敏元件4的第一端，每一条信号线6对应连接一光敏元件4的第二端。
光敏元件4根据接收到的第一波长范围的辐射光和扫描线5提供的扫描信号，生成一触控信号并提供给相对应的信号线6。例如，光敏元件4在未接到第一波长范围的辐射光时为非导通状态，在接收到第一波长范围的辐射光时导通。因此，光敏元件4接收到第一波长范围的辐射光后，扫描线5上提供的扫描信号由导通的光敏元件4进行转换，其转换后的信号参数(例如电压、电流)根据光敏元件4的特性改变，因此光敏元件4将产生一个与扫描信号相似的触控信号，并提供给信号线6。
本发明实施例的液晶触控显示面板中，形成于第一基板1上的黑矩阵3可以透过第一波长范围的辐射光，该光敏元件4根据扫描信号和第一波长范围的辐射光生成触控信号。例如，该光敏元件4能够在接收到该第一波长范 围的辐射光时导通，导通后的光敏元件4根据扫描信号生成触控信号并提供给信号线6，最终可以由集成电路元件对触控信号进行处理，得到生成该触控信号的光敏元件4的坐标来确定触摸的位置。例如，可将信号线输出的触控信号提供给集成电路元件，集成电路元件中可以预先存储有每一信号线对应的光敏元件所在位置的坐标，可根据对应信号线输出的触控信号获取与该信号线相连的光敏元件的位置的坐标，进而可获取生成该触控信号的光敏元件的触摸位置，从而实现触控功能。
参见图3，本发明实施例提供第二种触控显示面板包括相对设置的第一基板1和第二基板2，例如，第一基板1为彩膜基板，第一基板上形成有多个条状色阻9，第二基板2为阵列基板。
触控显示面板还包括黑矩阵3、光敏元件4、TFT 7和有机电致发光层10，有机电致发光层10形成于第二基板2之上；黑矩阵3形成于第一基板1上、且位于相邻色阻9之间，黑矩阵3仅透过第一波长范围的辐射光，例如人体辐射波长的入射光；如图2所示，触控显示面板还包括形成于第二基板2上的多个光敏元件4、多条扫描线5和信号线6，每一条扫描线5对应连接一光敏元件4的第一端，每一条信号线6对应连接一光敏元件的第二端。
光敏元件4根据接收到的第一波长范围的辐射光和扫描线5提供的扫描信号，生成一触控信号并提供给相对应的信号线6。例如，光敏元件4在未接到第一波长范围的辐射光时为非导通状态，在接收到第一波长范围的辐射光时导通。因此，光敏元件4接收到第一波长范围的辐射光后，扫描线5上提供的扫描信号由导通的光敏元件4进行转换，其转换后的信号参数(例如电压、电流)根据光敏元件4的特性改变，因此光敏元件4将产生一个与扫描信号相似的触控信号，并提供给信号线6。
本发明实施例的OLED触控显示面板中，其形成于第一基板1上的黑矩阵3可以透过第一波长范围的辐射光，该光敏元件4根据扫描信号和第一波长范围的辐射光生成触控信号，例如，该光敏元件4能够在接收到该第一波长范围的辐射光时导通，导通后的光敏元件4根据扫描信号生成触控信号并提供给信号线6，最终可以由集成电路元件对触控信号进行处理，得到生成该触控信号的光敏元件4的坐标来确定触摸的位置，从而实现触控功能。
当OLED显示面板中的光源为对应像素的红、绿、蓝单色OLED光时， 不需要色阻对各个像素发出的光进行过滤，所以根据图3所示的触控显示面板进行变型如下：将图3中第一基板1上的色阻9去除，即第一基板1为封装基板。该显示面板的其它结构与图3所示的触控显示面板相同，在此不再赘述。
上述提供的触控显示面板中，例如，黑矩阵3的材料可以为锗晶体材料，第一波长范围为2～12μm。本发明实施例中，在该第一波长范围内，自然光被黑矩阵3阻挡，但是人体辐射波长的入射光可以由黑矩阵3透过。如图4所示为自色光和人体辐射波长的入射光的光谱对比，其中，X轴表示波长，Y轴表示光强度(具体的光强度数值视实际情况而定)。自然光光谱11的波长范围在0.3～0.7μm，人体辐射光谱12的波长范围为9～11μm。如图5所示为锗晶体材料的黑矩阵3透过率的示意图，其中，X轴表示波长，Y轴表示黑矩阵的透过率(具体的透过率的数值可视黑矩阵的材料的具体组分而定)，黑矩阵3能够透过的第一波长范围的辐射光，该第一波长范围为2～12μm，而人体辐射光的波长范围为9～11μm，因此黑矩阵3能够阻挡自然光，并使人体辐射光透过，从而实现手指在触摸显示面板，光敏元件4能够接收到该人体辐射光。
例如，光敏元件4的材料可为红外光敏材料。如图6所示为红外光敏材料接收光谱示意图，其中，X轴表示波长，Y轴表示光强度(具体的光强度数值可视实际情况而定)。当入射光的波长在9～11μm时，可以使红外光敏材料具有导电性。因此，手指触摸触控显示面板时，红外光敏材料的光敏元件4能够根据透过黑矩阵3的人体辐射波长的入射光导通。
图4至图6中的Y轴所代表的光强度或透过率，仅是为了对本发明实施例进行说明，并不限定具体的数值范围；针对不同入射光强度或不同的黑矩阵，可能存在较大差异的数值变化，然而这些数值变化均能够依据本发明实施例提供的触控显示面板的变型进行利用，在此不再赘述。
例如，各扫描线5和各信号线6被黑矩阵3遮挡。本发明实施例中，各扫描线5和各信号线6不会影响像素的开口率。
例如，光敏元件4在第二基板2上均匀分布。本发明实施例中，均匀分布的光敏元件4能够提高触控的准确度。
例如，TFT 7的数量可大于光敏元件4的数量，每一光敏元件4形成于 一TFT 7的上方。本发明实施例可在满足一定触控需要的情况下，以较少的光敏元件4产生触控信号，以简化触控显示面板的结构，降低成本。
当然，触控显示面板还可以包括集成电路元件13，该集成电路元件形成于第二基板2上，集成电路元件根据生成触控信号的光敏元件的坐标确定触摸位置，在此不再赘述。
本发明实施例提供的触控显示面板中光敏元件4的数量可以根据实际情况而定。在要求触控精确度较高时，可以在每一TFT 7的上方均设置光敏元件4，当然要保证扫描线5和信号线6在第二基板2上不会影响像素开口率。在要求触控精确度较低时，可以在少数个TFT 7的上方设置光敏元件4。例如，触控显示面板用于显示节目图标供选择的场景中，在此种应用场景时对触控精确度要求较低，每一个图标均对应多个像素(即对应多个TFT)，因此只要保证在该图标对应的范围内，均匀分布少数个光敏元件即可满足触控要求。
本发明实施例中，形成于第一基板1上的黑矩阵3可以透过第一波长范围的辐射光，形成于第二基板2上的光敏元件4能够在接收到该第一波长范围的辐射光时导通；因此，以具有第一波长范围内的波长的物体接触该触控显示面板即可实现触控功能，从而提供结构简单、成本较低的触控显示面板。
实施例二
本发明实施例提供一种显示装置，该显示装置为液晶显示装置，包括实施例一提供的如图1所示的触控显示面板。
本发明实施例中，形成于第一基板上的黑矩阵可以透过第一波长范围的辐射光，形成于第二基板上的光敏元件能够在接收到该第一波长范围的辐射光时导通；因此，以具有第一波长范围内的波长的物体接触该触控显示面板即可实现触控功能，从而提供结构简单、成本较低的触控显示面板。
实施例三
本发明实施例提供一种显示装置，该显示装置为OLED显示装置，包括实施例一提供的如图3所示的触控显示面板或其变型。
本发明实施例中，形成于第一基板1上的黑矩阵3可以透过第一波长范围的辐射光，形成于第二基板2上的光敏元件4能够在接收到该第一波长范围的辐射光时导通；因此，以具有第一波长范围内的波长的物体接触该触控 显示面板即可实现触控功能，从而提供结构简单、成本较低的触控显示面板。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本专利申请要求于2014年9月29日递交的中国专利申请第201410514944.0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 (12)

  1. 一种触控显示面板，包括：
    相对设置的第一基板和第二基板，
    黑矩阵，所述黑矩阵形成于所述第一基板上，所述黑矩阵仅透过第一波长范围的辐射光；以及
    形成于所述第二基板上的多个光敏元件、多条扫描线和多条信号线，
    其中，所述光敏元件被所述黑矩阵遮挡；每一条所述扫描线对应连接一所述光敏元件的第一端，每一条所述信号线对应连接一所述光敏元件的第二端；
    所述光敏元件根据接收到的所述第一波长范围的辐射光和所述扫描线提供的扫描信号，生成一触控信号并提供给相对应的所述信号线。
  2. 如权利要求1所述的触控显示面板，其中，所述黑矩阵的材料为锗晶体材料。
  3. 如权利要求1或2所述的触控显示面板，其中，所述第一波长范围为2～12μm。
  4. 如权利要求1至3任一项所述的触控显示面板，其中，所述光敏元件的材料为红外光敏材料。
  5. 如权利要求1至4任一项所述的触控显示面板，其中，各所述扫描线和各所述信号线被所述黑矩阵遮挡。
  6. 如权利要求1至5任一项所述的触控显示面板，其中，所述光敏元件在所述第二基板上均匀分布。
  7. 如权利要求1至6任一项所述的触控显示面板，其中，所述触控显示面板还包括形成于所述第二基板的多个薄膜晶体管，所述薄膜晶体管的数量大于或等于所述光敏元件的数量，每一所述光敏元件形成于一所述薄膜晶体管的上方。
  8. 如权利要求1至7任一项所述的触控显示面板，其中，所述的触控显示面板为液晶显示面板或OLED显示面板。
  9. 如权利要求1至7任一项所述的触控显示面板，所述触控显示面板还包括设置于所述第一基板和所述第二基板之间的液晶层；其中，
    所述第一基板为彩膜基板，所述第一基板上还形成多个条状色阻，所述黑矩阵形成于相邻所述色阻之间，所述第二基板为阵列基板。
  10. 如权利要求1至7任一项所述的触控显示面板，所述触控显示面板还包括形成于所述第二基板上的有机电致发光层；其中，
    所述第一基板为封装基板或彩膜基板，所述第二基板为阵列基板；
    所述第一基板为彩膜基板时，所述第一基板上还形成多个条状色阻，所述黑矩阵形成于相邻所述色阻之间。
  11. 如权利要求1至10任一项所述的触控显示面板，所述触控显示面板还包括形成于所述第二基板上的集成电路元件，其中，所述集成电路元件根据生成所述触控信号的所述光敏元件的坐标确定触摸位置。
  12. 一种显示装置，包括如权利要求1至11任一项所述的触控显示面板。
PCT/CN2015/070049 2014-09-29 2015-01-04 触控显示面板和显示装置 WO2016050007A1 (zh)

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CN105095883B (zh) * 2015-08-28 2019-08-06 京东方科技集团股份有限公司 一种显示面板及其指纹识别的控制方法
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CN109782468A (zh) * 2018-12-28 2019-05-21 惠科股份有限公司 显示面板和显示装置
CN112835225A (zh) * 2021-03-17 2021-05-25 维沃移动通信有限公司 触控显示装置和电子设备

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