WO2017202075A1 - 一种阵列基板、显示面板和显示装置 - Google Patents

一种阵列基板、显示面板和显示装置 Download PDF

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Publication number
WO2017202075A1
WO2017202075A1 PCT/CN2017/073912 CN2017073912W WO2017202075A1 WO 2017202075 A1 WO2017202075 A1 WO 2017202075A1 CN 2017073912 W CN2017073912 W CN 2017073912W WO 2017202075 A1 WO2017202075 A1 WO 2017202075A1
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WIPO (PCT)
Prior art keywords
array substrate
transparent electrode
substrate
electrode
display
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PCT/CN2017/073912
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English (en)
French (fr)
Inventor
刘英明
董学
王海生
陈小川
丁小梁
杨盛际
赵卫杰
李昌峰
王磊
王鹏鹏
刘伟
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/562,874 priority Critical patent/US10504922B2/en
Publication of WO2017202075A1 publication Critical patent/WO2017202075A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136227—Through-hole connection of the pixel electrode to the active element through an insulation layer
    • 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
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an array substrate, a display panel, and a display device.
  • the structure of these display products is usually realized by adding control transistors and photosensitive elements (such as photoresistors or photodiodes) to the display pixels, that is, controlling transistors.
  • the sensitization of the photosensitive element is controlled to achieve recognition of the fingerprint.
  • the current control scheme for the photosensitive element is usually to control the control transistor separately, such as separately setting the scan control line of the control transistor, and separately scanning and controlling the control transistor, and simultaneously displaying the transistor and the scan line for display in the product. Separate settings for controlling the normal display of pixels in the display product.
  • the design of the fingerprint recognition function makes the screen display and the fingerprint recognition cannot be synchronized, that is, the fingerprint recognition cannot be performed simultaneously when viewing the display screen, and the scan time of the fingerprint recognition needs to be separately set; in practical applications, such as fingerprint unlocking
  • the fingerprint recognition screen of the fingerprint trigger screen or the payment interface cannot realize the fingerprint recognition function under the normal display condition of the screen, which causes great inconvenience to the actual application.
  • the present disclosure is directed to the above-described technical problems existing in the prior art, and provides an array substrate, a display panel, and a display device.
  • the array substrate realizes synchronization of image display and fingerprint recognition by connecting the transparent electrode to the gate, thereby eliminating the need to separately set a scanning function for fingerprint recognition for the array substrate, thereby greatly facilitating image display and fingerprint in the array substrate. Identify the actual application of the synchronization.
  • An array substrate includes a substrate, a switch tube disposed on the substrate, and a photosensitive member.
  • the switch tube is configured to control display of a pixel, the switch tube comprises a gate, the photosensitive element comprises a transparent electrode and a photosensitive layer, and the transparent electrode is used for transmitting sensitive light reflected by a surface of the fingerprint pressed thereon And irradiated onto the photosensitive layer, and the light transmissive electrode is connected to the gate.
  • the photosensitive element further includes a signal output electrode for outputting an electrical signal according to the sensitive light illuminating the photosensitive layer to identify the fingerprint, the photosensitive layer being located Between the light transmissive electrode and the signal output electrode.
  • the photosensitive element is disposed in an orthogonal projection direction of the switch tube to the substrate, and the photosensitive element is located on a side of the switch tube away from the substrate.
  • the signal output electrode, the photoactive layer, and the light transmissive electrode are sequentially away from the switch tube.
  • the switch tube further includes a source and a drain, the source and the drain are disposed in the same layer and spaced apart from each other, and the photosensitive element covers the source and the drain a spacer region; the signal output electrode is formed of the same material as the gate.
  • the gate completely blocks the photosensitive element in its forward projection direction to the substrate.
  • the array substrate further includes a transparent electrode disposed above the source and the drain, the transparent electrode and the transparent electrode being formed of the same material and disposed in the same layer;
  • the photosensitive layer is formed using lead sulfide, amorphous silicon or polycrystalline silicon.
  • the array substrate further includes a pixel electrode connected to the drain, the transparent electrode is a common electrode, and a passivation layer is disposed between the pixel electrode and the transparent electrode.
  • a further embodiment of the present invention further provides a display panel comprising the array substrate provided by any of the foregoing embodiments.
  • the display panel further includes a color filter substrate and a backlight, the color filter substrate is aligned with the array substrate, and the backlight is disposed on a side of the array substrate away from the color filter substrate. Providing a backlight for the aligned array substrate and the color film substrate;
  • the backlight includes a sensitive light source for emitting the sensitive light
  • the color filter substrate includes a black matrix, the black matrix blocks an area where the switch tube is located, and the black matrix corresponds to a region of the photosensitive element to transmit the sensitive light.
  • the region of the black matrix corresponding to the photosensitive element is formed using a material that is only transparent to the sensitive light.
  • the area of the black matrix corresponding to the photosensitive element includes a filter that only transmits the sensitive light.
  • the backlight further includes a display light source for providing a backlight for display.
  • the sensitive light source comprises an infrared light source.
  • a further embodiment of the present invention further provides a display device comprising the display panel provided by the above embodiments.
  • the array substrate For the array substrate, the display panel, and the display device provided by the embodiments of the present invention, by connecting the transparent electrodes to the gates, the array substrate is synchronized with the fingerprint recognition, so that it is not necessary to separately set the fingerprints for the array substrate.
  • the scanning function is recognized, which greatly facilitates the practical application of image display and fingerprint recognition synchronization in the array substrate.
  • Embodiment 1 is a cross-sectional view showing the structure of an array substrate in Embodiment 1 of the present invention
  • Figure 2 is a cross-sectional view showing the structure of a display panel in Embodiment 2 of the present invention.
  • An embodiment of the present invention provides an array substrate, as shown in FIG. 1, comprising a substrate 1, a switch tube 2 disposed on the substrate 1, and a photosensitive element 3 for controlling display of pixels, and the switch tube 2 includes
  • the gate electrode 21 includes a light-transmitting electrode 31, a signal output electrode 32, and a photosensitive layer 33 interposed between the light-transmitting electrode 31 and the signal output electrode 32.
  • the light-transmitting electrode 31 is used to press the fingerprint above it.
  • the sensitive light reflected by the surface is transmitted through and irradiated onto the photosensitive layer 33.
  • the signal output electrode 32 is for outputting an electrical signal according to the sensitive light irradiated onto the photosensitive layer 33 to recognize the fingerprint, and the transparent electrode 31 is connected to the gate 21.
  • the sensitive light is the light that is received and induced by the photosensitive element 3 when the fingerprint is recognized.
  • the sensitive light is infrared light.
  • the sensitive light can also be other light that can be utilized by the photosensitive element 3 to recognize the fingerprint.
  • the transparent electrode 31 When the transparent electrode 31 is connected to the gate electrode 21, when the gate 21 of the switch tube 2 is turned on, the pixel corresponding to the light-emitting tube 2 is driven to be displayed, and the light-transmissive electrode is simultaneously
  • the corresponding photosensitive element 3 is also turned on, and the photosensitive layer 33 is different in the amount of sensitive light reflected by the surface of the received fingerprint (fingerprint includes ridges and valleys, and the position of the ridge and the position of the valley are different for the amount of reflection of the sensitive light irradiated thereto) Its own photoresistor resistance will also be different.
  • the difference in the resistance of the photoresistor causes the magnitude of the current outputted from the signal output electrode 32 to be different, depending on the magnitude of the output current.
  • the fingerprint is recognized, so that the array substrate realizes synchronization of image display and fingerprint recognition, thereby eliminating the need to separately set the fingerprint recognition scan of the array substrate, which greatly facilitates the practical application of the display substrate and the fingerprint recognition synchronization in the array substrate.
  • the photosensitive element 3 is disposed in the front projection direction of the switch tube 2 to the substrate 1, and the photosensitive element 3 is located on the side of the switch tube 2 remote from the substrate 1. In this way, on the one hand, the photosensitive element 3 does not occupy the area where the pixel is located, thereby ensuring that the array substrate can be normally displayed in full screen; on the other hand, the photosensitive element 3 is located on the side of the switching tube 2 away from the substrate 1 for light sensing.
  • the component 3 is capable of receiving sensitive light reflected from the surface of the fingerprint pressed thereto, thereby enabling identification of the fingerprint.
  • the signal output electrode 32, the photosensitive layer 33, and the transparent electrode 31 are disposed away from the switching tube 2 in sequence.
  • the switch tube 2 further includes a source 22 and a drain 23, and the source 22 and the drain 23 are disposed in the same layer and
  • the photosensors 3 are spaced apart from each other to cover the spacer region 24 between the source 22 and the drain 23; the signal output electrode 32 is made of the same material as the gate 21.
  • the photosensitive element 3 can shield the channel region of the switch tube 2 when it is turned on, thereby preventing sensitive light for fingerprint recognition from illuminating the channel region of the switch tube to increase the leakage current of the switch tube, thereby ensuring the array.
  • the normal display of the substrate is not limited to the substrate.
  • the source 22 and the drain 23 may also be disposed in different layers.
  • the grid 21 completely blocks the photosensitive element 3 in its forward projection direction to the substrate 1.
  • the photosensitive member 3 can only receive sensitive light reflected from the surface of the fingerprint pressed thereto without receiving sensitive light other than reflected from the surface of the fingerprint (such as sensitivity from the lower side of the photosensitive member 3)
  • sensitive light such as sensitivity from the lower side of the photosensitive member 3
  • Light rays so that the identification of the fingerprint by the photosensitive element 3 can be prevented from being disturbed by other sensitive light (ie, sensitive light that is not reflected from the surface of the fingerprint), thereby making the identification of the fingerprint by the photosensitive element 3 more accurate.
  • the array substrate further includes a transparent electrode disposed on the source 22 and the drain 23, and the transparent electrode 31 and the transparent electrode may be disposed in the same material and in the same layer.
  • the photosensitive layer 33 may be made of lead sulfide, amorphous silicon or polycrystalline silicon.
  • the material of the photosensitive layer 33 is a photosensitive material, and when the photosensitive material is exposed to sensitive light, its resistance value changes with the amount of exposure of the sensitive light.
  • the transparent electrode is the common electrode 4. Further, a pixel electrode 5 is disposed above the source 22 and the drain 23, the pixel electrode 5 is connected to the drain 23, a passivation layer 6 is disposed above the pixel electrode 5, and the common electrode 4 is disposed on the passivation layer 6.
  • the switch tube 2 further includes an active layer 25, and a gate insulating layer 26 is further disposed between the gate electrode 21 and the active layer 25.
  • the liquid crystal display panel including the array substrate is a H-ADS (High Aperture Ratio Advanced Super Dimension Switch) display mode.
  • the transparent electrode 31 and the common electrode 4 are made of the same material and are disposed in the same layer, so that the process of separately preparing the transparent electrode 31 can be reduced, and the process cost can be saved.
  • the light-transmitting electrode 31 and the common electrode 4 can be prepared by using an indium tin oxide material, which enables the light-transmitting electrode 31 to transmit and irradiate sensitive light reflected by the surface of the fingerprint to the photosensitive layer 33.
  • the transparent electrode may also be a pixel electrode, and a common electrode is disposed above the source and the drain, and a passivation layer is disposed above the common electrode, and the pixel electrode is located above the passivation layer, that is,
  • the liquid crystal display panel including the array substrate is an ADS (ADvanced Super Dimension Switch). Conversion technology) display mode.
  • the light-transmitting electrode and the pixel electrode may be of the same material and disposed in the same layer.
  • the liquid crystal display panel including the array substrate may also be a TN (Twisted Nematic) display mode, that is, the transparent electrode is a pixel electrode, and the source and the drain are disposed above.
  • the transparent electrode is a pixel electrode
  • the source and the drain are disposed above.
  • the light-transmitting electrode and the pixel electrode are made of the same material and are disposed in the same layer.
  • whether the finger is pressed above the array substrate and the pressing position of the finger above the array substrate can be determined by the touch principle of the capacitive touch screen, that is, the capacitive touch function is first integrated in the array substrate, and the capacitor is passed through the capacitor.
  • the touch principle first determines whether the finger is pressed above the array substrate, and at the same time determines that the finger is pressed to a specific position above the array substrate, and then the fingerprint pressed to a position above the array substrate is recognized by the photosensitive element 3.
  • Capacitive touch screen judges whether the finger touches and the touch position of the finger is a mature technology through the principle of capacitive touch, and will not be described here.
  • the array substrate by connecting the light-transmitting electrode of the photosensitive element to the gate of the switch tube, the array substrate is synchronized with the image display and the fingerprint recognition, so that the array substrate does not need to be separately set.
  • the scanning of fingerprint recognition greatly facilitates the practical application of image display and fingerprint recognition synchronization in the array substrate.
  • FIG. 2 Another embodiment of the present invention provides a display panel, as shown in FIG. 2, including the array substrate 100 in the embodiment shown in FIG. 1.
  • the display panel further includes a color filter substrate 101 and a backlight (not shown).
  • the color filter substrate 101 can be aligned with the array substrate 100, and the backlight is disposed on the array substrate 100 away from the color filter substrate 101. One side is used to provide backlight for the aligned array substrate 100 and color film substrate 101.
  • the backlight includes a sensitive light source for emitting sensitive light 7 .
  • the color film substrate 101 includes a black matrix 8 corresponding to the area where the switch tube 2 is blocked, and the black matrix 8 corresponding to the photosensitive element 3 can transmit the sensitive light 7.
  • the sensitive light 7 irradiated onto the fingerprint 9 by the sensitive light source needs to be irradiated onto the photosensitive element 3 through the black matrix after being reflected by the fingerprint 9, so that the black matrix 8 corresponds to the photosensitive element 3.
  • the area is required to pass sensitive light7.
  • the backlight further includes a display light source for providing a backlight for display, and the arrangement position and arrangement manner of the sensitive light source and the display light source may be the same.
  • the backlight for the display and the light for identifying the fingerprint can be respectively provided by the display light source and the sensitive light source in the backlight, thereby ensuring that the image display and the fingerprint recognition of the display panel can be performed normally at the same time.
  • the sensitive light source comprises an infrared source.
  • the infrared source emits infrared light.
  • the area of the black matrix 8 corresponding to the photosensitive element 3 is formed using a material that can only transmit the sensitive light 7.
  • the area of the black matrix 8 corresponding to the photosensitive element 3 is formed by a material that can only transmit infrared light, so that the area of the black matrix corresponding to the photosensitive element 3 can only pass through the sensitive light for identifying the fingerprint. 7, the backlight for normal display cannot pass through the black matrix, which not only ensures the normal display of the display panel, but also realizes the function that the display panel can recognize the fingerprint.
  • the area of the black matrix 8 corresponding to the photosensitive element 3 may contain no chromium or only a small amount of chromium compared to other areas of the black matrix 8, such that infrared light is transmitted and most of the other light is blocked.
  • the black matrix 8 may also be a filter corresponding to the area of the photosensitive element 3, and the filter can only transmit the sensitive light 7. That is, the filter is a special filter that transmits only the sensitive light 7 and is incapable of transmitting light other than the sensitive light 7 (such as a backlight for display).
  • the image display and the fingerprint recognition can be synchronized by using the array substrate provided by the previous embodiment of the present invention, so that it is not necessary to separately set the fingerprint for the display panel.
  • the scanning function greatly facilitates the practical application of image display and fingerprint recognition synchronization in the display panel.
  • Yet another embodiment of the present invention provides a display device including the display panel provided by the foregoing embodiments.
  • the display device can realize synchronization of image display and fingerprint recognition, thereby eliminating the need to separately set a fingerprint recognition scan function for the display device, thereby greatly facilitating image display in the display device.
  • the display device provided by the embodiment of the present invention may be any product or component having a display function such as a liquid crystal panel, a liquid crystal television, a display, a mobile phone, a navigator or the like.

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Abstract

一种阵列基板、显示面板和显示装置。阵列基板包括基板（1）、设置在基板（1）上的开关管（2）和光敏元件（3），开关管（2）用于控制像素的显示，开关管（2）包括栅极（21），光敏元件（3）包括透光电极（31）和光敏层（33），透光电极（31）用于使按压到其上方的指纹（9）表面反射的敏感光线（7）透过并照射到光敏层（33）上，透光电极（31）连接栅极（21）。该阵列基板通过使透光电极（31）连接栅极（21），实现了图像显示与指纹（9）识别的同步，从而无需针对该阵列基板单独设置进行指纹（9）识别的扫描功能，进而方便了阵列基板中要求图像显示和指纹（9）识别同步的实际应用。

Description

一种阵列基板、显示面板和显示装置
相关申请的交叉引用
本申请要求于2016年5月24日向中国专利局提交的专利申请201610349471.2的优先权利益，并且在此通过引用的方式将该在先申请的内容并入本文。
技术领域
本发明涉及显示技术领域，具体地，涉及一种阵列基板、显示面板和显示装置。
背景技术
20世纪90年代后期，香港理工大学与清华大学率先开创了指纹识别技术研究领域，指纹识别具有精度高，速度快，价格低，用户接受度高等优点，因此该领域开创以来，就得到了学术界的充分重视，国内外很多的高校和科研机构纷纷加入到该研究领域中，并取得了一系列的成果。
目前，越来越多的显示产品中增加了指纹识别功能，这些显示产品的结构通常是通过在显示像素中添加控制晶体管和光敏元件(如光敏电阻或者光敏二极管)的方式实现的，即控制晶体管对光敏元件的感光进行控制，以实现对指纹的识别。
但是，目前对光敏元件的控制方案通常是对控制晶体管单独进行控制，如将控制晶体管的扫描控制线单独设置，且单独对控制晶体管进行扫描控制，同时，显示产品中显示用的晶体管和扫描线单独设置，用于控制显示产品中像素的正常显示。
然而，这种指纹识别功能的设计使画面显示与指纹识别不能同步进行，即观看显示画面时不能同时进行指纹识别，而且对指纹识别的扫描时间需要单独进行设置；在实际应用中，比如指纹开锁、指纹触发屏幕或者支付界面的指纹识别支付，均不能实现画面正常显示情况下的指纹识别功能，这给实际应用造成了很大的不便。
发明内容
本公开针对现有技术中存在的上述技术问题，提供一种阵列基板、显示面板和显示装置。该阵列基板通过使透光电极连接栅极，实现了图像显示与指纹识别的同步，从而无需针对该阵列基板单独设置用于指纹识别的扫描功能，进而大大方便了阵列基板中要求图像显示和指纹识别同步的实际应用。
根据本发明的实施例提供的阵列基板包括基板、设置在所述基板上的开关管和光敏元件。所述开关管用于控制像素的显示，所述开关管包括栅极，所述光敏元件包括透光电极和光敏层，所述透光电极用于使按压到其上方的指纹表面反射的敏感光线透过并照射到所述光敏层上，并且所述透光电极连接所述栅极。
在一些实施例中，光敏元件还包括信号输出电极，信号输出电极用于根据照射到所述光敏层上的所述敏感光线输出电信号，以对所述指纹进行识别，所述光敏层位于所述透光电极和所述信号输出电极之间。
在一些实施例中，所述光敏元件设置在所述开关管至基板的正投影方向上，且所述光敏元件位于所述开关管的远离所述基板的一侧。
在一些实施例中，所述信号输出电极、所述光敏层和所述透光电极依次远离所述开关管。
在一些实施例中，所述开关管还包括源极和漏极，所述源极和所述漏极同层设置且相互间隔，所述光敏元件覆盖所述源极和所述漏极之间的间隔区域；所述信号输出电极采用与所述栅极相同的材料形成。
在一些实施例中，所述栅极在其至基板的正投影方向上完全遮挡所述光敏元件。
在一些实施例中，阵列基板还包括透明电极，所述透明电极设置在所述源极和所述漏极上方，所述透光电极与所述透明电极采用相同材料形成且同层设置；所述光敏层采用硫化铅、非晶硅或多晶硅材料形成。
在一些实施例中，所述阵列基板还包括与所述漏极连接的像素电极，所述透明电极为公共电极，所述像素电极和透明电极之间设置有钝化层。
本发明的另外的实施例还提供一种显示面板，包括前述实施例中任意实施例所提供的阵列基板。
在一些实施例中，显示面板还包括彩膜基板和背光源，所述彩膜基板与所述阵列基板对合，所述背光源设置在所述阵列基板的远离所述彩膜基板的一侧，用于为对合的所述阵列基板和所述彩膜基板提供背光；
所述背光源包括敏感光源，所述敏感光源用于发射所述敏感光线；
所述彩膜基板包括黑矩阵，所述黑矩阵遮挡所述开关管所在区域，所述黑矩阵对应所述光敏元件的区域能透过所述敏感光线。
在一些实施例中，所述黑矩阵对应所述光敏元件的区域采用仅能透过所述敏感光线的材料形成。
在一些实施例中，所述黑矩阵对应所述光敏元件的区域包括滤光片，所述滤光片仅能使所述敏感光线透过。
在一些实施例中，所述背光源还包括显示光源，所述显示光源用于提供显示用背光，。
在一些实施例中，所述敏感光源包括红外光源。
本发明的又一实施例还提供一种显示装置，包括上述实施例所提供的显示面板。
对于本发明实施例所提供的阵列基板、显示面板和显示装置，通过使透光电极连接栅极，使该阵列基板实现了显示与指纹识别的同步，从而无需针对该阵列基板单独设置用于指纹识别到扫描功能，进而大大方便了阵列基板中要求图像显示和指纹识别同步的实际应用。
附图说明
图1为本发明实施例1中阵列基板的结构剖视图；
图2为本发明实施例2中显示面板的结构剖视图。
具体实施方式
为使本领域的技术人员更好地理解本发明实施例的技术方案，下面结合附图和具体示例对本发明实施例所提供的阵列基板、显示面板和显示装置作进一步详细描述。
在下面的描述中，可能用到以下附图标记：
1.基板；2.开关管；21.栅极；22.源极；23.漏极；24.间隔区域；25.有源层；26.栅绝缘层；3.光敏元件；31.透光电极；32.信号输出电极； 33.光敏层；4.公共电极；5.像素电极；6.钝化层；100.阵列基板；101.彩膜基板；7.敏感光线；8.黑矩阵；9.指纹。
本发明的一个实施例提供一种阵列基板，如图1所示，包括基板1、设置在基板1上的开关管2和光敏元件3，开关管2用于控制像素的显示，开关管2包括栅极21，光敏元件3包括透光电极31、信号输出电极32和夹设在透光电极31和信号输出电极32之间的光敏层33，透光电极31用于使按压到其上方的指纹表面反射的敏感光线透过并照射到光敏层33上，信号输出电极32用于根据照射到光敏层33上的敏感光线输出电信号，以对指纹进行识别，透光电极31连接栅极21。
需要说明的是，敏感光线为光敏元件3用于对指纹进行识别时所接收和感应的光线，本实施例中，敏感光线为红外光线。当然，敏感光线也可以是其他的可被光敏元件3利用来识别指纹的光线。
通过使透光电极31连接栅极21，当开关管2的栅极21通入扫描信号被开启时，阵列基板的对应由该开光管2控制的像素被驱动显示，同时，与该透光电极31对应的光敏元件3也被开启，光敏层33根据接收的指纹表面反射的敏感光线的量不同(指纹包括脊和谷，脊位置和谷位置对照射到其上的敏感光线的反射量不同)，其自身的光敏电阻阻值也会不同。由于透光电极31与信号输出电极32之间的压差基本不变，所以光敏电阻阻值的不同会使信号输出电极32上输出的电流大小也不相同，根据该输出电流大小的不同能够对指纹进行识别，从而使该阵列基板实现了图像显示与指纹识别的同步，进而无需再单独设置该阵列基板的指纹识别扫描，大大方便了阵列基板中要求显示和指纹识别同步的实际应用。
本实施例中，光敏元件3设置在开关管2至基板1的正投影方向上，且光敏元件3位于开关管2的远离基板1的一侧。如此设置，一方面，使光敏元件3不会占用像素所在区域，从而确保了该阵列基板能够正常进行全屏显示；另一方面，光敏元件3位于开关管2的远离基板1的一侧，便于光敏元件3能够接收到从按压到其上方的指纹表面反射的敏感光线，从而能够对指纹进行识别。
本实施例中，信号输出电极32、光敏层33和透光电极31依次远离开关管2设置。
开关管2还包括源极22和漏极23，源极22和漏极23同层设置且 相互间隔，光敏元件3对应覆盖源极22和漏极23之间的间隔区域24；信号输出电极32采用与栅极21相同的材料。如此设置，光敏元件3能够对开关管2在开启时的沟道区域进行遮光，从而避免用于指纹识别的敏感光线照射开关管的沟道区域使开关管的漏电流增大，进而确保了阵列基板的正常显示。
需要说明的是，在其他实施例中，源极22和漏极23也可以不同层设置。
本图1所示的实施例中，栅极21在其至基板1的正投影方向上完全遮挡光敏元件3。如此设置，能使光敏元件3仅能接收从按压到其上方的指纹表面反射的敏感光线，而不会接收到除指纹表面所反射的以外的敏感光线(如从光敏元件3下方射入的敏感光线)，从而使光敏元件3对指纹的识别能够不被其它敏感光线(即不是从指纹表面反射的敏感光线)干扰，进而使光敏元件3对指纹的识别更加准确。
本实施例中，阵列基板还包括透明电极，透明电极设置在源极22和漏极23上方，透光电极31与透明电极可采用相同材料且同层设置。光敏层33可采用硫化铅、非晶硅或多晶硅材料制成。光敏层33的材料为光敏材料，这些光敏材料在受到敏感光线照射时，其电阻阻值会随着敏感光线的照射量的变化而变化。
本图1所示的实施例中，透明电极为公共电极4。另外，在源极22和漏极23上方还设置有像素电极5，像素电极5与漏极23连接，像素电极5上方设置有钝化层6，公共电极4设置在钝化层6上。开关管2还包括有源层25，栅极21与有源层25之间还设置有栅绝缘层26。本实施例中，包括该阵列基板的液晶显示面板为H-ADS(High Aperture Ratio Advanced Super Dimension Switch，高开口率的高级超维场转换技术)显示模式。透光电极31与公共电极4采用相同材料且同层设置，如此能够减少单独制备透光电极31的工艺，节约工艺成本。透光电极31与公共电极4可采用氧化铟锡材料制备而成，该材料能使透光电极31很好地使指纹表面反射的敏感光线透过并照射到光敏层33上。
需要说明的是，在其它实施例中，透明电极也可以是像素电极，而源极和漏极上方设置有公共电极，公共电极上方设置有钝化层，像素电极位于钝化层上方，即，在这样的实施例中，包括该阵列基板的液晶显示面板为ADS(ADvanced Super Dimension Switch，高级超维场 转换技术)显示模式。透光电极与像素电极可采用相同材料且同层设置。
另外需要说明的是，在另外的实施例中，包括该阵列基板的液晶显示面板也可以为TN(Twisted Nematic，扭曲向列)显示模式，即透明电极为像素电极，源极和漏极上方设置有钝化层，像素电极位于钝化层上，像素电极与漏极通过开设在钝化层中的过孔连接。透光电极与像素电极采用相同材料且同层设置。
在本实施例中，手指是否按压到该阵列基板上方以及手指在该阵列基板上方的按压位置可以通过电容触摸屏的触控原理进行判断，即该阵列基板中首先集成了电容触控功能，通过电容触控原理首先判断手指是否按压到该阵列基板上方，同时判断手指按压到阵列基板上方的具体位置，然后再通过光敏元件3对按压到阵列基板上方某个位置的指纹进行识别。电容触摸屏通过电容触控原理对手指是否触摸以及手指的触摸位置进行判断为比较成熟的技术，这里不再赘述。
对于本实施例所提供的阵列基板，通过使光敏元件的透光电极连接开关管的栅极，使该阵列基板实现了图像显示与指纹识别的同步，从而使该阵列基板的无需再单独设置针对指纹识别的扫描，进而大大方便了阵列基板中要求图像显示和指纹识别同步的实际应用。
本发明的另一实施例提供一种显示面板，如图2所示，包括图1所示的实施例中的阵列基板100。
本实施例中，显示面板还包括彩膜基板101和背光源(图中未示出)，彩膜基板101可与阵列基板100对合，背光源设置在阵列基板100的远离彩膜基板101的一侧，用于为对合的阵列基板100和彩膜基板101提供背光。背光源包括敏感光源，敏感光源用于发射敏感光线7。彩膜基板101包括黑矩阵8，黑矩阵8对应遮挡开关管2所在区域，黑矩阵8对应光敏元件3的区域能透过敏感光线7。由于指纹9在彩膜基板101侧按压到显示面板上，敏感光源照射到指纹9上的敏感光线7经指纹9反射后需要通过黑矩阵照射到光敏元件3上，因此黑矩阵8对应光敏元件3的区域要求能透过敏感光线7。
在一些实施例中，背光源还包括显示光源，显示光源用于提供显示用背光，敏感光源与显示光源的设置位置以及排布方式可以相同。 如此设置，能够实现显示用背光和识别指纹用光线能够分别通过背光源中的显示光源和敏感光源提供，从而确保了显示面板图像显示和指纹识别能够同时正常进行。
在一些实施例中，敏感光源包括红外光源。红外光源发射红外光线。黑矩阵8对应光敏元件3的区域采用仅能透过敏感光线7的材料形成。例如，在本实施例中，黑矩阵8对应光敏元件3的区域采用仅能透过红外光线的材料形成，使黑矩阵对应光敏元件3的区域仅能透过用于对指纹进行识别的敏感光线7，而正常显示用的背光无法透过黑矩阵，从而不仅确保了显示面板的正常显示，同时还实现了显示面板能对指纹进行识别的功能。例如，与黑矩阵8的其它区域相比，黑矩阵8对应光敏元件3的区域可以不包含铬或者仅包含少量的铬，使得红外光线透过而大部分的其它光线被阻挡。
在另外的实施例中，黑矩阵8对应光敏元件3的区域也可以采用滤光片，滤光片仅能使敏感光线7透过。即该滤光片为特殊滤光片，该滤光片仅能使敏感光线7透过，而除敏感光线7以外的其他光线(如显示用背光)无法透过。
对于图2所示的实施例提供的显示面板，通过采用本发明的之前实施例所提供的阵列基板，能够实现图像显示与指纹识别的同步，从而无需针对该显示面板单独设置用于指纹识别的扫描功能，进而大大方便了显示面板中要求图像显示和指纹识别同步的实际应用。
本发明的又一实施例提供一种显示装置，包括前述实施例所提供的显示面板。
通过采用本发明的前述实施例提供的显示面板，使该显示装置能够实现图像显示与指纹识别的同步，从而无需针对该显示装置单独设置指纹识别扫描功能，进而大大方便了显示装置中要求图像显示和指纹识别同步的实际应用。
本发明实施例所提供的显示装置可以为液晶面板、液晶电视、显示器、手机、导航仪等任何具有显示功能的产品或部件。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (15)

  1. 一种阵列基板，包括基板、设置在所述基板上的开关管和光敏元件，所述开关管用于控制像素的显示，所述开关管包括栅极，所述光敏元件包括透光电极和光敏层，
    其中所述透光电极用于使按压到其上方的指纹表面反射的敏感光线透过并照射到所述光敏层上，其中所述透光电极连接所述栅极。
  2. 根据权利要求1所述的阵列基板，其中所述光敏元件还包括信号输出电极，所述信号输出电极用于根据照射到所述光敏层上的所述敏感光线输出电信号，以对所述指纹进行识别，
    其中所述光敏层位于所述透光电极和所述信号输出电极之间。
  3. 根据权利要求2所述的阵列基板其中所述光敏元件设置在所述开关管至所述基板的正投影方向上，且所述光敏元件位于所述开关管的远离所述基板的一侧。
  4. 根据权利要求3所述的阵列基板，其中所述信号输出电极、所述光敏层和所述透光电极依次远离所述开关管。
  5. 根据权利要求4所述的阵列基板，其中所述开关管还包括源极和漏极，所述源极和所述漏极同层设置且相互间隔，所述光敏元件覆盖所述源极和所述漏极之间的间隔区域；其中所述信号输出电极采用与所述栅极相同的材料形成。
  6. 根据权利要求1-5中任一项所述的阵列基板，其中所述栅极在其至所述基板的正投影方向上完全遮挡所述光敏元件。
  7. 根据权利要求5所述的阵列基板，其中所述阵列基板还包括透明电极，所述透明电极设置在所述源极和所述漏极上方，所述透光电极与所述透明电极采用相同材料形成且同层设置；其中所述光敏层采用硫化铅、非晶硅或多晶硅材料形成。
  8. 根据权利要求7所述的阵列基板，其中所述阵列基板还包括与所述漏极连接的像素电极，所述透明电极为公共电极，其中所述像素电极和透明电极之间设置有钝化层。
  9. 一种显示面板，包括权利要求1-8任意一项所述的阵列基板。
  10. 根据权利要求9所述的显示面板，还包括彩膜基板和背光源，所述彩膜基板与所述阵列基板对合，所述背光源设置在所述阵列基板 的远离所述彩膜基板的一侧，用于为对合的所述阵列基板和所述彩膜基板提供背光；
    其中所述背光源包括敏感光源，所述敏感光源用于发射所述敏感光线；
    其中所述彩膜基板包括黑矩阵，所述黑矩阵遮挡所述开关管所在区域，所述黑矩阵对应所述光敏元件的区域能透过所述敏感光线。
  11. 根据权利要求10所述的显示面板，其中所述黑矩阵对应所述光敏元件的区域采用仅能透过所述敏感光线的材料形成。
  12. 根据权利要求10所述的显示面板，其中所述黑矩阵对应所述光敏元件的区域包括滤光片，所述滤光片仅能使所述敏感光线透过。
  13. 根据权利要求10所述的显示面板，其中所述背光源还包括显示光源，所述显示光源用于提供显示用背光。
  14. 根据权利要求13所述的显示面板，其中所述敏感光源包括红外光源。
  15. 一种显示装置，包括权利要求9-14任意一项所述的显示面板。
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