WO2021248620A1 - 光敏变色触控显示装置 - Google Patents

光敏变色触控显示装置 Download PDF

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Publication number
WO2021248620A1
WO2021248620A1 PCT/CN2020/101965 CN2020101965W WO2021248620A1 WO 2021248620 A1 WO2021248620 A1 WO 2021248620A1 CN 2020101965 W CN2020101965 W CN 2020101965W WO 2021248620 A1 WO2021248620 A1 WO 2021248620A1
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WO
WIPO (PCT)
Prior art keywords
touch
photosensitive
color
changing
display device
Prior art date
Application number
PCT/CN2020/101965
Other languages
English (en)
French (fr)
Inventor
黄东晨
郑净远
Original Assignee
惠州市华星光电技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by 惠州市华星光电技术有限公司 filed Critical 惠州市华星光电技术有限公司
Priority to US16/967,424 priority Critical patent/US11899301B2/en
Publication of WO2021248620A1 publication Critical patent/WO2021248620A1/zh

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Classifications

    • 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
    • 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
    • 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
    • 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
    • G06F3/044—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

Definitions

  • This application relates to the field of display technology, and in particular to a photosensitive color-changing touch display device.
  • LCD displays are required to meet the multi-function requirements: 1. Have good visibility in large viewing angles in meeting scenes or educational scenes under ambient light to achieve meeting interaction; 2. In the meeting In the scene, it is hoped that the conference panel has touch function, which can realize the meeting interaction; 3. In the conference and education industry, users hope to have the visual effect of the laser pointer to realize the function of pointer instruction. However, it is difficult for traditional TV display modules to obtain the above-mentioned multimedia effects.
  • the embodiment of the present application provides a light-sensitive color-changing touch display device to solve the technical problem that the existing display panel cannot meet the multi-functional requirements of touch function and laser pointer visibility in meeting scenes or education scene applications.
  • the embodiment of the application provides a photosensitive color-changing touch display device, including a display panel, a photosensitive color-changing touch panel, a driving chip, and a central processing unit;
  • the photosensitive color-changing touch panel includes a plurality of touch electrodes and a plurality of photoresistors
  • the drive chip is electrically connected to the photoresistor to obtain the current change signal of the photoresistor;
  • the central processing unit is electrically connected to the drive chip and the display panel; wherein, the photoresistor When the resistance value of the drive chip changes, the drive chip transmits the acquired current change signal to the central processing unit, and the central processing unit controls the display panel corresponding to the area where the current change occurs to change color;
  • the photosensitive color change The touch display device further includes a polarizer arranged on the photosensitive color-changing touch panel; the photosensitive resistor and the touch electrode are arranged in the same layer.
  • the photosensitive color-changing touch panel further includes a base substrate arranged on the display panel, and a plurality of the touch electrodes and a plurality of the photosensitive resistors are arranged on the On the base substrate.
  • the photoresistor and the touch electrode are alternately arranged on the base substrate.
  • the driving chip is further connected to the touch electrode to obtain a touch signal from the touch electrode.
  • the photosensitive color-changing touch display device further includes a touch drive chip, the touch drive chip is connected to the touch electrodes and the central processing unit, and the touch The driving chip is used to obtain touch signals from the touch electrodes.
  • the central processing unit also controls the display panel to display touch feedback.
  • the display panel includes an array substrate and a color filter substrate that are arranged oppositely, and the photoresistor and the touch electrode may be built in the array substrate or the color filter of the display panel. On the substrate.
  • the embodiment of the application also provides another photosensitive color-changing touch display device, including a display panel, a photosensitive color-changing touch panel, a driving chip, and a central processing unit;
  • the photosensitive color-changing touch panel includes a plurality of touch electrodes and a plurality of Photoresistor;
  • the drive chip is electrically connected to the photoresistor to obtain the current change signal of the photoresistor;
  • the central processing unit is electrically connected to the drive chip and the display panel; wherein, the When the resistance of the photoresistor changes, the drive chip transmits the acquired current change signal to the central processing unit, and the central processing unit controls the display panel corresponding to the area where the current changes to change color.
  • the photoresistor and the touch electrode are provided in the same layer.
  • the photoresistor and the touch electrode are arranged in different layers.
  • the photosensitive color-changing touch panel further includes a base substrate arranged on the display panel, and a plurality of the touch electrodes and a plurality of the photosensitive resistors are arranged on the On the base substrate.
  • the photosensitive color-changing touch panel is bonded to the display panel through an optical adhesive layer.
  • the photoresistor and the touch electrode are alternately arranged on the base substrate.
  • the photosensitive color-changing touch display device further includes a polarizer disposed on the photosensitive color-changing touch panel.
  • the driving chip is further connected to the touch electrode to obtain a touch signal from the touch electrode.
  • the photosensitive color-changing touch display device further includes a touch drive chip, the touch drive chip is connected to the touch electrodes and the central processing unit, and the touch The driving chip is used to obtain touch signals from the touch electrodes.
  • the central processing unit also controls the display panel to display touch feedback.
  • the display panel includes an array substrate, a color filter substrate, and a liquid crystal layer disposed oppositely, and the photoresistor and the touch electrode may be built into the array of the display panel On the substrate or color film substrate.
  • the photoresistor is any one of an ultraviolet photoresistor, a visible light photoresistor, and an infrared photoresistor.
  • the photoresistor is made of any one of cadmium sulfide, cadmium selenide, lead sulfide, lead telluride, lead selenide, and indium antimonide.
  • a backlight module is further provided under the display panel.
  • a multimedia integrated display panel with photochromic and touch functions is realized.
  • the drive chip When the photoresistor is irradiated by the laser pointer and the resistance value changes, by collecting current change information, the drive chip will generate The position of the current change is fed back to the central processing unit, and the central processing unit controls the display panel at the corresponding position to change the color, so that the trajectory of the laser pointer is revealed, thereby realizing the multifunctional application of the liquid crystal display in the meeting or education scene.
  • FIG. 1 is a schematic structural diagram of a photosensitive color-changing touch panel provided by an embodiment of the application
  • FIG. 2 is a schematic diagram of the structure of a photoresistor pattern provided by an embodiment of the application
  • FIG. 3 is a schematic structural diagram of a photosensitive color-changing touch display device provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of touch signals and photosensitive signals of a photosensitive color-changing touch panel provided by an embodiment of the application;
  • FIG. 5 is a signal processing flowchart of a photosensitive color-changing touch display device provided by an embodiment of the application.
  • the present application provides a photosensitive touch display device.
  • the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application.
  • an embodiment of the present application provides a photosensitive touch display device 100, which includes a display panel 20 and a photosensitive color-changing touch panel 10.
  • the photosensitive color-changing touch panel 10 includes a plurality of touch electrodes 12 , And multiple photoresistors 13.
  • the embodiments of the present application can solve the above-mentioned defects by integrating the photoresistor on the touch panel.
  • the photoresistor When irradiated by ultraviolet light, the photoresistor will change in resistance value, which will cause the current change in the corresponding area.
  • the signal processor collects current information. Thereby, the display panel at the corresponding position is controlled to change the color to display the trajectory of the laser pointer.
  • the touch electrodes 12 are used to implement a touch function.
  • the touch electrodes 12 include touch sensing electrodes and touch driving electrodes.
  • the touch sensing electrodes and the touch driving electrodes can be arranged in the same layer or Heterogeneous settings.
  • the touch sensing electrode is disconnected at the intersection with the touch driving electrode, and the disconnected touch sensing electrode can be connected through a bridge electrode electrode. It can be understood that the disconnected electrode may also be the touch drive electrode.
  • an insulating layer can be provided between the touch sensing electrodes and the touch driving electrodes to achieve the purpose of insulation.
  • the photoresistor 13 and the touch electrode 12 can be arranged in the same layer or in different layers.
  • an insulating layer may also be arranged between the two for insulation.
  • the photoresistor 13 and the touch electrode 12 may be arranged in the same layer to reduce the thickness of the panel.
  • the photoresistor 13 may be provided in the same layer as one of the touch sensing electrode and the touch driving electrode of the touch electrode 12.
  • the photoresistor 13 and the touch electrode 12 are alternately arranged on the base substrate, so that the functional areas of the photochromic touch panel 10 all include photoresistors 13 and touch electrodes.
  • the functional area refers to the area irradiated by the laser and the touch area.
  • the photochromic touch panel 10 may further include a base substrate 11, and a plurality of the photoresistors 13 and a plurality of the touch electrodes 12 are disposed on the base substrate 11.
  • the photosensitive color-changing touch panel 10 can be bonded to the display panel 20 through an optical adhesive layer.
  • the base substrate 11 of the photosensitive touch panel 10 is bonded to the display panel 20.
  • the photoresistor 13 and the touch electrode 12 may be elongated. In the horizontal direction, the photoresistor 13 and the touch electrode 12 are alternately arranged on the base substrate 11.
  • the photoresistor 13 and the touch electrode 12 may also have other shapes such as a square, a rhombus, and a grid shape, which are not limited here.
  • the photosensitive touch panel 10 may be directly disposed on the display panel 20, that is, the photosensitive resistor 13 and the touch electrode 12 are directly prepared on a part of the film layer of the display panel 20 superior.
  • one photoresistor 13 may be composed of a plurality of thin strip-shaped resistance wires arranged in parallel.
  • the photosensitive color-changing touch panel 10 further includes a plurality of electrode terminals 14, and the electrode terminals can be arranged on the base substrate 11.
  • the electrode terminal 14 is connected to the photoresistor 13, and the electrode terminal 14 can be arranged in a non-functional area of the photochromic touch panel 10.
  • the touch electrode 12 is also connected to the electrode terminal 14, and the electrode terminal 14 is connected to an external device to transmit the touch signal and the photosensitive signal of the photosensitive color-changing touch panel 10.
  • the touch signal includes position information and current change information of the touch point
  • the photosensitive signal includes point information and current change information irradiated by the laser.
  • the photoresistor 13 is any one of an ultraviolet photoresistor, a visible light photoresistor, and an infrared photoresistor.
  • the photoresistor 13 is an ultraviolet photoresistor
  • a photoresistor made of cadmium sulfide, cadmium selenide or the like can be used to detect ultraviolet rays.
  • the photoresistor 13 is an infrared photoresistor
  • a photoresistor made of lead sulfide, lead telluride, lead selenide, and indium antimonide can be used to detect infrared rays.
  • the photosensitive color-changing touch panel can be applied to a display panel, and can be in cell or on In the cell structure, the display panel can be a liquid crystal display panel or an OLED display panel.
  • a liquid crystal display panel and an on cell are taken as examples for description.
  • the display panel 20 includes an array substrate 21, a liquid crystal layer 22, and a color filter substrate 23 stacked in sequence, and the photosensitive color-changing touch panel 10 is disposed on the color filter substrate 23.
  • the photosensitive color-changing touch panel 10 can be bonded to the display panel 20 through an optical adhesive layer. Specifically, the base substrate 11 of the photosensitive color-changing touch panel 10 is bonded to the color filter substrate 23 of the display panel 20.
  • the photosensitive color-changing touch panel 10 may be in Cell structure, that is, the photosensitive color-changing touch panel can be embedded in the display panel 20, and the photoresistor and the touch electrode can be built in the array substrate 21 or the color film substrate of the display panel 20 23 on.
  • the light-sensitive color-changing touch display device 100 further includes a driving chip 70 and a central processing unit 80 electrically connected to the driving chip 70, and the central processing unit 80 is also connected to the display panel 20
  • the driving chip 70 is used to obtain the photosensitive signal (ie, the current change signal) of the photoresistor 13, and the central processing unit 80 controls the display panel 20 at the corresponding position to change the color according to the current change signal.
  • the drive chip 70 transmits the acquired current change signal to the central processing unit 80, and the central processing unit 80 controls the display corresponding to the area where the current change occurs.
  • the panel 20 changes color.
  • the resistance value of the photoresistor 13 at the irradiated position changes, which causes the current at the location of the photoresistor 13 to change, and drives the chip 70
  • the position where the current change occurs is obtained, and the current change signal is fed back to the central processing unit 80.
  • the central processing unit 80 controls the display panel at the current change position to change the color, for example, controls the display panel at the position to display red, thereby The naked eye can see that the laser pointer irradiated area displays red, so that the irradiation trajectory of the laser pointer can be obtained in real time.
  • the resistance value of the photoresistor 13 is a fixed value F, and the current change at the position of the photoresistor 13 monitored by the drive chip 70 Is zero, that is, the monitored current value remains unchanged.
  • the central processing unit will not issue a control command to the display panel 20, and the display panel 20 performs normal touch display; when a laser pointer is used to illuminate a certain position When the photoresistor 13 is on, the resistance of the photoresistor changes due to laser irradiation.
  • the resistance of the photoresistor is F'
  • the drive chip 70 detects that the current value at this position has changed, and can be preset
  • the constant current change is ⁇ I.
  • the central processing unit controls the display panel 20 corresponding to the position to change the displayed color, that is, the position where the laser is irradiated in real time corresponds to All areas of are displayed in red.
  • the touch chip can be integrated with the photosensitive chip, that is, the drive chip 70 can also obtain the touch signal of the touch electrode 12, so as to feed the touch signal to the central processing unit. 80.
  • the central processing unit 80 controls the display panel 20 to display touch feedback.
  • the photosensitive color-changing touch display device 100 further includes a touch drive chip, the touch drive chip is connected to the touch electrodes 12 and the central processing unit 80, and the touch drive The chip obtains the touch signal from the touch electrode to feed back the touch signal to the central processing unit 80, and the central processing unit 80 controls the display panel 20 to make a touch feedback display.
  • the touch drive chip is connected to the touch electrodes 12 and the central processing unit 80, and the touch drive The chip obtains the touch signal from the touch electrode to feed back the touch signal to the central processing unit 80, and the central processing unit 80 controls the display panel 20 to make a touch feedback display.
  • the photosensitive color-changing touch display device 100 further includes a polarizer 40 disposed on the photosensitive color-changing touch panel 10, and there is a polarizer 40 between the polarizer 40 and the photosensitive color-changing touch panel 10.
  • the air gap 101, the polarizer 40 can be used to reduce the light mixing into the air gap 101.
  • a backlight module 60 is also arranged under the display panel 20 for providing backlight.
  • the upper polarizer 30 may be a wide viewing angle polarizer, so that the backlight light has a wider viewing angle after being emitted from the display surface, thereby meeting the requirements of meeting or educational scenes under ambient light, and having a better large viewing angle. To achieve meeting interaction.
  • the polarizer 40 is covered with a protective cover 50.
  • the light-emitting surface of the protective cover 50 can be treated with AG (anti-halation), and the light-emitting surface of the protective cover 50 is processed with fine concave and convex to prevent direct light. Into the eyes, thereby effectively reducing glare and reflection, and improving the display effect.
  • a multimedia integrated display panel with photochromic and touch functions is realized.
  • the drive chip When the photoresistor is irradiated by the laser pointer and the resistance value changes, by collecting current change information, the drive chip will generate The position of the current change is fed back to the central processing unit, and the central processing unit controls the display panel at the corresponding position to change the color, so that the trajectory of the laser pointer is revealed, thereby realizing the multifunctional application of the liquid crystal display in the meeting or education scene.

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  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
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  • Position Input By Displaying (AREA)

Abstract

一种光敏变色触控显示装置，包括显示面板（20）、光敏变色触控面板（10）、驱动芯片（70）、以及中央处理器（80），光敏变色触控面板（10）包括多个触控电极（12）和多个光敏电阻（13），当光敏电阻（13）的阻值发生变化时，驱动芯片（70）将获取的电流变化信号传递至中央处理器（80），中央处理器（80）控制发生电流变化的区域所对应的所述显示面板（20）改变颜色。

Description

光敏变色触控显示装置 技术领域
本申请涉及显示技术领域，尤其涉及一种光敏变色触控显示装置。
 背景技术
大尺寸液晶显示器在商业显示方面的应用，尤其是在会议一体机以及电子白板等方面的应用有着广泛的市场需求。对于会议一体机和电子白板，要求液晶显示器能够满足多功能需求：1、具有在环境光下的会议场景或教育场景中，具有较好的大视角可视性以实现会议交互；2、在会议场景中希望会议面板具有触控功能，能实现会议交互；3、在会议和教育行业中，使用者希望拥有激光笔可视的效果实现教鞭指示的功能。而传统的TV显示模组，都难以获得上述的多媒体效果。
因此，现有的液晶显示技术急需改进。
 技术问题
本申请实施例提供一种光敏变色触控显示装置，以解决现有的显示面板在会议场景或教育场景应用中，不能同时满足触控功能和激光笔可视的多功能需求的技术问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供一种光敏变色触控显示装置，包括显示面板、光敏变色触控面板、驱动芯片、以及中央处理器；所述光敏变色触控面板包括多个触控电极和多个光敏电阻；所述驱动芯片与所述光敏电阻电性连接，以获取所述光敏电阻的电流变化信号；所述中央处理器与所述驱动芯片以及所述显示面板电性连接；其中，所述光敏电阻的阻值发生变化时，所述驱动芯片将获取的电流变化信号传递至所述中央处理器，所述中央处理器控制发生电流变化的区域所对应的所述显示面板改变颜色；所述光敏变色触控显示装置还包括设置于所述光敏变色触控面板上的偏光片；所述光敏电阻与所述触控电极同层设置。
在本申请的至少一种实施例中，所述光敏变色触控面板还包括设置于所述显示面板上的衬底基板，多个所述触控电极和多个所述光敏电阻设置于所述衬底基板上。
在本申请的至少一种实施例中，在水平方向上，所述光敏电阻与所述触控电极交替排列于所述衬底基板上。
在本申请的至少一种实施例中，所述驱动芯片还与所述触控电极连接，以获取来自于所述触控电极的触控信号。
在本申请的至少一种实施例中，所述光敏变色触控显示装置还包括触控驱动芯片，所述触控驱动芯片与所述触控电极、所述中央处理器连接，所述触控驱动芯片用以获取来自于所述触控电极的触控信号。
在本申请的至少一种实施例中，所述中央处理器还控制所述显示面板做出触控反馈显示。
在本申请的至少一种实施例中，所述显示面板包括相对设置的阵列基板和彩膜基板，所述光敏电阻和所述触控电极可内设于所述显示面板的阵列基板或彩膜基板上。
本申请实施例还提供另外一种光敏变色触控显示装置，包括显示面板、光敏变色触控面板、驱动芯片、以及中央处理器；所述光敏变色触控面板包括多个触控电极和多个光敏电阻；所述驱动芯片与所述光敏电阻电性连接，以获取所述光敏电阻的电流变化信号；所述中央处理器与所述驱动芯片以及所述显示面板电性连接；其中，所述光敏电阻的阻值发生变化时，所述驱动芯片将获取的电流变化信号传递至所述中央处理器，所述中央处理器控制发生电流变化的区域所对应的所述显示面板改变颜色。
在本申请的至少一种实施例中，所述光敏电阻与所述触控电极同层设置。
在本申请的至少一种实施例中，所述光敏电阻与所述触控电极异层设置。
在本申请的至少一种实施例中，所述光敏变色触控面板还包括设置于所述显示面板上的衬底基板，多个所述触控电极和多个所述光敏电阻设置于所述衬底基板上。
在本申请的至少一种实施例中，所述光敏变色触控面板通过光学胶层与所述显示面板贴合。
在本申请的至少一种实施例中，在水平方向上，所述光敏电阻与所述触控电极交替排列于所述衬底基板上。
在本申请的至少一种实施例中，所述光敏变色触控显示装置还包括设置于所述光敏变色触控面板上的偏光片。
在本申请的至少一种实施例中，所述驱动芯片还与所述触控电极连接，以获取来自于所述触控电极的触控信号。
在本申请的至少一种实施例中，所述光敏变色触控显示装置还包括触控驱动芯片，所述触控驱动芯片与所述触控电极、所述中央处理器连接，所述触控驱动芯片用以获取来自于所述触控电极的触控信号。
在本申请的至少一种实施例中，所述中央处理器还控制所述显示面板做出触控反馈显示。
在本申请的至少一种实施例中，所述显示面板包括相对设置的阵列基板、彩膜基板、以及液晶层，所述光敏电阻和所述触控电极可内设于所述显示面板的阵列基板或彩膜基板上。
在本申请的至少一种实施例中，所述光敏电阻为紫外光敏电阻、可见光光敏电阻以及红外光敏电阻中的任意一种。
在本申请的至少一种实施例中，所述光敏电阻的材质为硫化镉、硒化镉、硫化铅、碲化铅、硒化铅、以及锑化铟中的任意一种。
在本申请的至少一种实施例中，所述显示面板的下方还设置有背光模组。
 有益效果
通过在具有触控功能的基板上设置光敏电阻，实现光敏变色功能和触控功能的多媒体一体显示面板，当光敏电阻受到激光笔照射发生阻值变化时，通过收集电流变化信息，驱动芯片将发生电流变化的位置反馈给中央处理器，中央处理器控制相应位置的显示面板改变颜色，从而使得激光笔照射的轨迹显现出来，进而实现液晶显示器在会议或教育场景中的多功能应用。
 附图说明
图1为本申请实施例提供的光敏变色触控面板的结构示意图；
图2为本申请实施例提供的光敏电阻图案的结构示意图；
图3为本申请实施例提供的光敏变色触控显示装置的结构示意图；
图4为本申请实施例提供的光敏变色触控面板的触控信号和光敏信号的示意图；
图5为本申请实施例提供的光敏变色触控显示装置的信号处理流程图。
 本发明的实施方式
本申请提供一种光敏触控显示装置，为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
如图1和图3所示，本申请实施例提供一种光敏触控显示装置100，包括显示面板20和光敏变色触控面板10，所述光敏变色触控面板10包括多个触控电极12、以及多个光敏电阻13。
现有的液晶显示器在应用于会议场景中，使用者希望面板具有触控功能，从而能够实现会议交互；在应用于教育和会议场景中，使用者希望面板具有激光笔可视的效果以实现指示的功能，而传统的液晶显示器中难以获得上述的多媒体功能。本申请实施例能够解决上述缺陷，将光敏电阻集成于触控面板上，在受到紫外光线照射时，光敏电阻会发生电阻值变化，从而引起对应区域的电流变化，通过信号处理器收集电流信息，从而控制对应位置的显示面板改变颜色，以显示出激光笔的轨迹。
所述触控电极12用以实现触控功能，所述触控电极12包括触控感应电极和触控驱动电极，所述触控感应电极和所述触控驱动电极可同层设置，也可异层设置。
当所述触控感应电极与所述触控驱动电极同层设置时，所述触控感应电极在与所述触控驱动电极相交处断开，可通过桥接电极来连接断开的触控感应电极。可以理解的是，断开的电极也可为所述触控驱动电极。
当所述触控感应电极与所述触控驱动电极异层设置时，可用过在所述触控感应电极与所述触控驱动电极之间设置绝缘层以达到绝缘目的。
所述光敏电阻13与所述触控电极12可同层设置，也可异层设置。所述光敏电阻13与所述触控电极12异层设置时，也可在两者之间设置绝缘层以绝缘。
在一种实施例中，如图1所示，所述光敏电阻13可与所述触控电极12同层设置，以降低面板厚度。
具体地，所述光敏电阻13可与所述触控电极12的触控感应电极、触控驱动电极中的一者同层设置。
在一种实施例中，所述光敏电阻13与所述触控电极12交替排列于所述衬底基板上，从而使得所述光敏变色触控面板10的功能区域均包括有光敏电阻13和触控电极12，所述功能区域指的是激光照射的区域和触控区域。
在一种实施例中，所述光敏变色触控面板10还可包括衬底基板11，多个所述光敏电阻13和多个所述触控电极12设置于所述衬底基板11上。所述光敏变色触控面板10可通过光学胶层与所述显示面板20贴合。
具体地，所述光敏触控面板10的所述衬底基板11与所述显示面板20贴合。
所述光敏电阻13和所述触控电极12可为长条形。在水平方向上，所述光敏电阻13和所述触控电极12交替设置于所述衬底基板11上。
所述光敏电阻13和所述触控电极12还可为方形、菱形、以及网格状等其他形状，这里不做限制。
在一种实施例中，所述光敏触控面板10可直接设置于所述显示面板20上，即所述光敏电阻13和所述触控电极12直接制备在所述显示面板20的部分膜层上。
在一种实施例中，如图2所示，一个所述光敏电阻13可由多个平行排列的细条状电阻丝组成。
所述光敏变色触控面板10还包括多个电极端子14，所述电极端子可设置于所述衬底基板11上。
所述电极端子14与所述光敏电阻13连接，所述电极端子14可设置于所述光敏变色触控面板10的非功能区域。
如图4所示，所述触控电极12也连接有所述电极端子14，所述电极端子14与外部器件连接，以传递所述光敏变色触控面板10的触控信号和光敏信号，所述触控信号包括触控点位的位置信息和电流变化信息，所述光敏信号包括激光照射的点位信息和电流变化信息。
所述光敏电阻13为紫外光敏电阻、可见光光敏电阻以及红外光敏电阻中的任意一种。
所述光敏电阻13为紫外光敏电阻时，可采用硫化镉、硒化镉等材质的光敏电阻器，用于探测紫外线。
所述光敏电阻13为红外光敏电阻时，可采用硫化铅、碲化铅、硒化铅、以及锑化铟等材质的光敏电阻器，用于探测红外线。
所述光敏变色触控面板可应用于显示面板中，可为in cell或on cell结构，所述显示面板可为液晶显示面板，也可为OLED显示面板。
在一种实施例中，以液晶显示面板、on cell为例进行说明。如图3所示，所述显示面板20包括依次层叠设置的阵列基板21、液晶层22、以及彩膜基板23，所述光敏变色触控面板10设置于所述彩膜基板23上。
在一种实施例中，所述光敏变色触控面板10可通过光学胶层与显示面板20粘合。具体地，所述光敏变色触控面板10的衬底基板11与所述显示面板20的彩膜基板23粘合。
在一种实施例中，所述光敏变色触控面板10可为in cell 结构，即所述光敏变色触控面板可内嵌设于所述显示面板20内部，所述光敏电阻和所述触控电极可内设于所述显示面板20的阵列基板21或彩膜基板23上。
如图5所示，所述光敏变色触控显示装置100还包括驱动芯片70和与所述驱动芯片70电性连接的中央处理器80，所述中央处理器80还与所述显示面板20连接，所述驱动芯片70用以获取所述光敏电阻13的光敏信号(即电流变化信号)，所述中央处理器80根据电流变化信号控制相应位置的显示面板20改变颜色。
所述光敏电阻13的阻值发生变化时，所述驱动芯片70将获取的电流变化信号传递至所述中央处理器80，所述中央处理器80控制发生电流变化的区域所对应的所述显示面板20改变颜色。
例如，利用紫外激光笔照射到所述光敏变色触控面板10上的功能区域上时，照射位置的光敏电阻13发生电阻值变化，从而引起该光敏电阻13所处位置的电流变化，驱动芯片70获取到发生电流变化的位置，将电流变化信号反馈至所述中央处理器80，所述中央处理器80控制该发生电流变化位置的显示面板改变颜色，例如控制该位置的显示面板显示红色，从而使得肉眼看到激光笔照射区域显示红色，从而能够即时获取激光笔的照射轨迹。
所述光敏变色触控面板10上的多个光敏电阻13在没有受到激光照射时，光敏电阻13的阻值为一固定值F，所述驱动芯片70监测到的光敏电阻13位置的电流变化量为零，即监测到的电流值保持不变，此时中央处理器不会对显示面板20发出控制指令,所述显示面板20进行正常的触控显示；当用激光笔照射在某一位置的光敏电阻13上时，所述光敏电阻由于受到激光照射发生阻值变化，此时所述光敏电阻的阻值为F’，所述驱动芯片70监测到该位置的电流值发生变化，可预定设定电流变化量为△I，当实际监测的电流值变化量超过该△I范围值时，所述中央处理器控制该位置对应的显示面板20改变显示的颜色，即使得激光实时照射的位置对应的区域全部显示红色。
在一种实施例中，触控芯片可与光敏芯片集成于一体，即所述驱动芯片70还可获取所述触控电极12的触控信号，从而将触控信号反馈至所述中央处理器80，所述中央处理器80控制所述显示面板20做出触控反馈显示。
在一种实施例中，所述光敏变色触控显示装置100还包括触控驱动芯片，所述触控驱动芯片与所述触控电极12、所述中央处理器80连接，所述触控驱动芯片获取来自于所述触控电极的触控信号，从而将触控信号反馈至所述中央处理器80，所述中央处理器80控制所述显示面板20做出触控反馈显示。
如图3所示，所述光敏变色触控显示装置100还包括设置于所述光敏变色触控面板10上的偏光片40，所述偏光片40与所述光敏变色触控面板10之间具有空气间隙101，所述偏光片40可用于减少进入所述空气间隙101的混光。
所述显示面板20的下方还设置有背光模组60，用于提供背光。
所述显示面板20的两相对侧分别设置有上偏光片30和下偏光片，所述上偏光片30设置于所述彩膜基板23与所述光敏变色触控面板10之间。所述上偏光片30可为广视角偏光片，从而使得背光的光线从显示面射出后具有更广的视角，从而满足环境光下的会议场景或教育场景中，具有较好的大视角可视性以实现会议交互。
所述偏光片40上覆盖有保护盖板50，所述保护盖板50的出光面可进行AG（防晕光）处理，对所述保护盖板50的出光面进行微细凹凸加工，防止光直射入眼睛，从而有效减少眩光和反射，提高显示效果。
通过在具有触控功能的基板上设置光敏电阻，实现光敏变色功能和触控功能的多媒体一体显示面板，当光敏电阻受到激光笔照射发生阻值变化时，通过收集电流变化信息，驱动芯片将发生电流变化的位置反馈给中央处理器，中央处理器控制相应位置的显示面板改变颜色，从而使得激光笔照射的轨迹显现出来，进而实现液晶显示器在会议或教育场景中的多功能应用。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (20)

  1. 一种光敏变色触控显示装置，其包括：
    显示面板；
    光敏变色触控面板，所述光敏变色触控面板包括多个触控电极和多个光敏电阻；
    驱动芯片，与所述光敏电阻电性连接，以获取所述光敏电阻的电流变化信号；以及
    中央处理器，与所述驱动芯片以及所述显示面板电性连接；其中，
    所述光敏电阻的阻值发生变化时，所述驱动芯片将获取的电流变化信号传递至所述中央处理器，所述中央处理器控制发生电流变化的区域所对应的所述显示面板改变颜色；
    所述光敏变色触控显示装置还包括设置于所述光敏变色触控面板上的偏光片；所述光敏电阻与所述触控电极同层设置。
  2. 根据权利要求1所述的光敏变色触控显示装置，其中，所述光敏变色触控面板还包括设置于所述显示面板上的衬底基板，多个所述触控电极和多个所述光敏电阻设置于所述衬底基板上。
  3. 根据权利要求2所述的光敏变色触控显示装置，其中，在水平方向上，所述光敏电阻与所述触控电极交替排列于所述衬底基板上。
  4. 根据权利要求1所述的光敏变色触控显示装置，其中，所述驱动芯片还与所述触控电极连接，以获取来自于所述触控电极的触控信号。
  5. 根据权利要求1所述的光敏变色触控显示装置，其中，所述光敏变色触控显示装置还包括触控驱动芯片，所述触控驱动芯片与所述触控电极、所述中央处理器连接，所述触控驱动芯片用以获取来自于所述触控电极的触控信号。
  6. 根据权利要求4所述的光敏变色触控显示装置，其中，所述中央处理器还控制所述显示面板做出触控反馈显示。
  7. 根据权利要求1所述的光敏变色触控显示装置，其中，所述显示面板包括相对设置的阵列基板和彩膜基板，所述光敏电阻和所述触控电极可内设于所述显示面板的阵列基板或彩膜基板上。
  8. 一种光敏变色触控显示装置，其包括：
    显示面板；
    光敏变色触控面板，所述光敏变色触控面板包括多个触控电极和多个光敏电阻；
    驱动芯片，与所述光敏电阻电性连接，以获取所述光敏电阻的电流变化信号；以及
    中央处理器，与所述驱动芯片以及所述显示面板电性连接；其中，
    所述光敏电阻的阻值发生变化时，所述驱动芯片将获取的电流变化信号传递至所述中央处理器，所述中央处理器控制发生电流变化的区域所对应的所述显示面板改变颜色。
  9. 根据权利要求8所述的光敏变色触控显示装置，其中，所述光敏电阻与所述触控电极同层设置。
  10. 根据权利要求8所述的光敏触控显示装置，其中，所述光敏电阻与所述触控电极异层设置。
  11. 根据权利要求9所述的光敏变色触控显示装置，其中，所述光敏变色触控面板还包括设置于所述显示面板上的衬底基板，多个所述触控电极和多个所述光敏电阻设置于所述衬底基板上。
  12. 根据权利要求11所述的光敏变色触控显示装置，其中，在水平方向上，所述光敏电阻与所述触控电极交替排列于所述衬底基板上。
  13. 根据权利要求8所述的光敏变色触控显示装置，其中，所述光敏变色触控显示装置还包括设置于所述光敏变色触控面板上的偏光片。
  14. 根据权利要求8所述的光敏变色触控显示装置，其中，所述驱动芯片还与所述触控电极连接，以获取来自于所述触控电极的触控信号。
  15. 根据权利要求8所述的光敏变色触控显示装置，其中，所述光敏变色触控显示装置还包括触控驱动芯片，所述触控驱动芯片与所述触控电极、所述中央处理器连接，所述触控驱动芯片用以获取来自于所述触控电极的触控信号。
  16. 根据权利要求14所述的光敏变色触控显示装置，其中，所述中央处理器还控制所述显示面板做出触控反馈显示。
  17. 根据权利要求8所述的光敏变色触控显示装置，其中，所述显示面板包括相对设置的阵列基板和彩膜基板，所述光敏电阻和所述触控电极可内设于所述显示面板的阵列基板或彩膜基板上。
  18. 根据权利要求8所述的光敏变色触控显示装置，其中，所述光敏电阻为紫外光敏电阻、可见光光敏电阻以及红外光敏电阻中的任意一种。
  19. 根据权利要求18所述的光敏变色触控显示装置，其中，所述光敏电阻的材质为硫化镉、硒化镉、硫化铅、碲化铅、硒化铅、以及锑化铟中的任意一种。
  20. 根据权利要求8所述的光敏变色触控显示装置，其中，所述显示面板的下方还设置有背光模组。
PCT/CN2020/101965 2020-06-12 2020-07-14 光敏变色触控显示装置 WO2021248620A1 (zh)

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