WO2021164089A1 - 一种指纹识别结构及显示面板 - Google Patents

一种指纹识别结构及显示面板 Download PDF

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Publication number
WO2021164089A1
WO2021164089A1 PCT/CN2020/080361 CN2020080361W WO2021164089A1 WO 2021164089 A1 WO2021164089 A1 WO 2021164089A1 CN 2020080361 W CN2020080361 W CN 2020080361W WO 2021164089 A1 WO2021164089 A1 WO 2021164089A1
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WIPO (PCT)
Prior art keywords
light
layer
transmission layer
fingerprint identification
refractive index
Prior art date
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Ceased
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PCT/CN2020/080361
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English (en)
French (fr)
Inventor
刘智
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US16/772,786 priority Critical patent/US11502211B2/en
Publication of WO2021164089A1 publication Critical patent/WO2021164089A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching
    • G02F1/313—Digital deflection, i.e. optical switching in an optical waveguide structure
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
    • G06V10/147—Details of sensors, e.g. sensor lenses
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F55/00—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto
    • H10F55/20—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto wherein the electric light source controls the radiation-sensitive semiconductor devices, e.g. optocouplers
    • H10F55/26—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto wherein the electric light source controls the radiation-sensitive semiconductor devices, e.g. optocouplers wherein the radiation-sensitive semiconductor devices have potential barriers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/40—Optical elements or arrangements
    • H10F77/413—Optical elements or arrangements directly associated or integrated with the devices, e.g. back reflectors

Definitions

  • the invention relates to the field of display, in particular to a fingerprint identification structure and a display panel.
  • Fingerprint recognition has been widely popularized in many fields such as mobile phones, tablet computers, and time attendance machines due to its good security and ease of use.
  • fingerprint recognition has become the standard configuration of electronic consumer products such as mobile phones, tablets and notebook computers, and various terminal manufacturers are developing corresponding fingerprint recognition technologies.
  • the current in-screen fingerprint recognition on the market is mainly based on the optical or ultrasonic fingerprint module attached to the bottom of the screen.
  • This structure can be very convenient for users to operate, but due to external stickers
  • the fingerprint module increases the thickness of the front panel module of the mobile phone, affects the design of the whole machine, and also increases the cost of the product.
  • the present invention provides a fingerprint identification structure and a display panel, which are used to solve the technical problems of large thickness and high cost caused by the existing fingerprint identification structure provided with a fingerprint module.
  • the present invention provides a fingerprint recognition structure, which includes a light energy conduction switch and a thermal light path adjustment structure; the light energy conduction switch is used to switch from an open circuit to a path under the irradiation of light;
  • the sensitive light path adjustment structure is connected to a surface of the light energy conduction switch, and can transmit light inside, so that the light path of the light does not irradiate the light energy conduction switch when the heat source is not received, and is used When the heat source is received, the light path of the light irradiates the light energy switch; wherein, the heat source is the temperature of the fingerprint ridge.
  • the light energy conduction switch includes a semiconductor layer, a source electrode, and a drain electrode; the upper surface of the semiconductor layer is connected to the thermal light path adjustment structure, and is used for converting from a semiconductor state to a conductive state under light irradiation. Body state; the source electrode is electrically connected to one end of the lower surface of the semiconductor layer; the drain electrode is electrically connected to the other end of the lower surface of the semiconductor layer.
  • the heat-sensitive light path adjustment structure includes a light selective penetration layer, a light transmission layer, a light direction control layer, and a light source; specifically, the light selective penetration layer is provided on the heat-sensitive light path adjustment structure;
  • the light transmission layer is provided on the light selective transmission layer and is used for transmitting the light;
  • the light direction control layer is provided on the light transmission layer and is used for receiving the heat source and connecting to the heat source. The direction of reflection of the light is controlled under the influence.
  • the refractive index of the light selective penetration layer is smaller than the refractive index of the light transmission layer.
  • the refractive index of the light direction control layer is equal to the refractive index of the light transmission layer, and the refractive index of the light direction control layer is equal to the refractive index of the light transmission layer
  • the refractive index of the light direction control layer is not equal to the refractive index of the light transmission layer; the light direction control layer reflects the light through the light selective penetration layer It is transmitted to the thermal optical path adjustment structure.
  • the light direction control layer includes a concave-convex diffuse reflection surface, and the diffuse reflection surface is connected to the light transmission layer.
  • the light transmission layer includes a plurality of slots, and the light transmission layer is disposed in the slots.
  • the diffuse reflection surface includes a plurality of reflection units, and the shape and size of the reflection units conform to the shape and size of the slot.
  • the shape of the reflecting units is semi-spherical and arranged in an array.
  • the present invention also provides a display panel, which includes any of the above-mentioned fingerprint identification structures.
  • the technical effect of the present invention is to provide a fingerprint identification structure and a display panel.
  • a fingerprint identification structure similar to the TFT device structure the thickness is small, and no fingerprint module is required, which reduces the production cost, and the fingerprint
  • the identification structure can be integrated on the display panel, which can reduce the thickness and cost of the display panel.
  • FIG. 1 is a schematic structural diagram of a fingerprint identification structure in an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the arrangement structure of the source electrode and the drain electrode in the embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the fingerprint identification structure when the heat source is not received in the embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the fingerprint identification structure when the heat source is received in the embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a display panel in an embodiment of the present invention.
  • Light source 100, display panel, 231, reflection unit.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • Connected or integrally connected it can be mechanically connected, or electrically connected or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction of two components relation.
  • an intermediate medium it can be the internal communication of two components or the interaction of two components relation.
  • a fingerprint identification structure 10 which includes a light energy conduction switch 1 and a thermal light path adjustment structure 2; the light energy conduction switch 1 It is used to switch from an open circuit to a path under the irradiation of light; the thermal light path adjusting structure 2 is connected to a surface of the light energy conduction switch 1, and the light can be transmitted inside, which is used when the heat source is not received.
  • the light path of the light (indicated by the arrow in FIG. 1) does not irradiate the light energy conduction switch 1, and is used to irradiate the light energy conduction switch 1 when the heat source is received; wherein ,
  • the heat source is the temperature of the fingerprint ridge.
  • the working principle of the fingerprint identification structure 10 is to use the temperature difference between the fingerprint ridge and the fingerprint valley, and the difference in the signal received by the grid for identification. More specifically, a fingerprint of a finger includes a fingerprint ridge and a fingerprint valley. When a finger touches the fingerprint identification structure 10, the fingerprint valley cannot touch the thermal light path adjustment structure 2, and the fingerprint ridge can touch all the fingerprint identification structures. In the thermal light path adjusting structure 2, since the finger has a temperature, the temperature of the fingerprint ridge can be used as the heat source to enable the thermal light path adjusting structure 2 to reflect the light and irradiate the light energy conduction switch 1. The light energy conducting switch 1 is converted from an open circuit to a path under the irradiation of light, thereby identifying the fingerprint ridge at the corresponding position.
  • This embodiment proposes a fingerprint identification structure 10 similar to a TFT device structure, which has a small thickness and does not require a fingerprint module, which reduces the manufacturing cost.
  • the light energy switch 1 includes a semiconductor layer 11, a source electrode 12, and a drain electrode 13.
  • the upper surface of the semiconductor layer 11 and the thermal light path adjustment structure 2 The source electrode 12 is electrically connected to one end of the lower surface of the semiconductor layer 11; the drain electrode 13 is electrically connected to the lower surface of the semiconductor layer 11. The other end of the surface is electrically connected.
  • the material of the semiconductor layer 11 is preferably amorphous silicon.
  • the principle is that when the valence electrons in the semiconductor layer 11 are irradiated by the light, they can obtain sufficient energy, get rid of the constraints of covalent bonds, and become free electrons, thereby forming a channel in the semiconductor layer 11.
  • the source 12 and the drain 13 are turned on.
  • the drain 13 is connected to a high potential voltage, and the source 12 is connected to a low potential voltage, so that the light energy conducting switch 1 can be converted from an open circuit to a path under the irradiation of light.
  • the arrangement directions of the source electrode 12 and the drain electrode 13 are preferably alternately arranged, and more preferably, the arrangement direction of the source electrode 12 and the drain electrode 13 Perpendicular to each other.
  • the thermal light path adjustment structure 2 includes a light selective penetration layer 21, a light transmission layer 22, a light direction control layer 23 and a light source 24.
  • the light selective penetration layer 21 is provided on the thermal light path adjusting structure 2.
  • the light transmission layer 22 is provided on the light selective transmission layer 21 for transmitting the light.
  • the light direction control layer 23 is provided on the light transmission layer 22 for receiving the heat source and controlling the reflection direction of the light under the influence of the heat source; specifically, when the heat source is not received.
  • the reflected light path of the light does not irradiate the light energy conduction switch 1, and the reflected light path of the light irradiates the light energy conduction switch 1 when a heat source is received.
  • the light source 24 is arranged on one side of the light transmission layer 22 for providing the light, and the incident angle ⁇ of the light is greater than the total reflection angle of the light selective penetration layer 21, so that the light cannot pass from the light source.
  • the upper and lower surfaces of the light transmission layer 22 come out.
  • the refractive index of the light selective penetration layer 21 is smaller than the refractive index of the light transmission layer 22.
  • the refractive index of the light direction control layer 23 is equal to The refractive index of the light transmission layer 22, the refractive index of the light direction control layer 23 is equal to the refractive index of the light transmission layer 22; the light emitted by the light source 24 cannot come out from the upper and lower surfaces of the light transmission layer 22, The semiconductor layer 11 is not irradiated by light, and the signal received by the gate does not change.
  • the refractive index of the light direction control layer 23 and the light transmission layer 22 are both Changes, and the refractive index of the light direction control layer 23 is not equal to the refractive index of the light transmission layer 22; the light direction control layer 23 reflects the light from the lower surface of the light transmission layer 22, And it passes through the light selective penetration layer 21 and is transmitted to the thermal light path adjusting structure 2.
  • the light irradiates the semiconductor layer 11, which affects its transmission function, and causes the signal received by the gate to change.
  • the light direction control layer 23 includes a concave and convex diffuse reflection surface, and the diffuse reflection surface is connected to the light transmission layer 22. That is, the interface between the light transmission layer 22 and the light direction control layer 23 is not uniform, and diffuse reflection is formed when the refractive index of the light direction control layer 23 and the refractive index of the light transmission layer 22 are not equal.
  • the light transmission layer 22 includes a plurality of slots, and the light transmission layer 22 is disposed in the slots.
  • the diffuse reflection surface includes a plurality of reflection units 231, and the shape and size of the reflection units 231 conform to the shape and size of the slot.
  • the shape of the reflecting unit 231 is semi-spherical and arranged in an array.
  • the longitudinal cross-sectional shape of the reflecting unit 231 may also be a triangle, a polygon, etc., as long as it satisfies the shape of the diffuse reflection function.
  • the present invention also provides a display panel 100, which includes any one of the fingerprint identification structures 10 described above. Specifically, there are multiple fingerprint identification structures 10, which are arranged in an array. The fingerprint identification structure 10 can be integrated on the display panel 100, which can reduce the thickness and cost of the display panel 100.
  • the beneficial effects of the display panel 100 provided by the embodiment of the present invention are the same as the beneficial effects of the fingerprint identification structure 10 provided by the above technical solutions, and will not be repeated here.
  • the display panel 100 provided in the foregoing embodiment may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, or a navigator.
  • a display function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, or a navigator.
  • the technical effect of the present invention is to provide a fingerprint identification structure and a display panel.
  • a fingerprint identification structure similar to the TFT device structure the thickness is small, and no fingerprint module is required, which reduces the production cost, and the fingerprint
  • the identification structure can be integrated on the display panel, which can reduce the thickness and cost of the display panel.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Image Input (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

公开一种指纹识别结构及显示面板。显示面板包括指纹识别结构，指纹识别结构包括光能导通开关以及热敏光路调整结构；光能导通开关用于在光线照射下由断路转换为通路；热敏光路调整结构与光能导通开关的一表面相连接，其内部可传输光线，用于在接收到热源时光线的光路照射至光能导通开关。

Description

一种指纹识别结构及显示面板 技术领域
本发明涉及显示领域，尤其涉及一种指纹识别结构及显示面板。
 背景技术
指纹识别由于具有良好的安全性和使用便捷性已经在手机、平板电脑、考勤机等众多领域大量普及。
目前指纹识别已成为手机、平板和笔记本电脑等电子消费品的标配，各个终端厂商都在开发相应的指纹识别技术。
因此，近年来兴起屏内指纹识别的技术风潮，但是目前市面的屏内指纹识别主要是在屏幕下方贴合光学或者超声波式的指纹模组，这种结构可以非常方便用户操作，但是由于外贴指纹模组，增大了手机正面面板模组的厚度，影响整机机构设计，而且会同时增加产品成本。
 技术问题
本发明提供一种指纹识别结构及显示面板，用以解决现有指纹识别结构设置指纹模组导致其厚度大以及成本高的技术问题。
 技术解决方案
为了解决上述问题，本发明提供一种指纹识别结构，其包括光能导通开关以及热敏光路调整结构；所述光能导通开关用于在光线照射下由断路转换为通路；所述热敏光路调整结构与所述光能导通开关的一表面相连接，其内部可传输光线，用于在未接收到的热源时所述光线的光路不照射至所述光能导通开关，并用于在接收到热源时所述光线的光路照射至所述光能导通开关；其中，所述热源为指纹脊的温度。
进一步地，所述光能导通开关包括半导体层、源极以及漏极；所述半导体层的上表面与所述热敏光路调整结构相连接，用于在光线照射下由半导体态转换为导体态；所述源极与所述半导体层的下表面的一端电性连接；所述漏极与所述半导体层的下表面的另一端电性连接。
进一步地，所述热敏光路调整结构包括光线选择穿透层、光线传输层、光线方向控制层以及光源；具体地讲，所述光线选择穿透层设于所述热敏光路调整结构上；所述光线传输层设于所述光线选择穿透层上，用于传输所述光线；所述光线方向控制层设于所述光线传输层上，用于接收所述热源并在所述热源的影响下控制所述光线的反射方向。
进一步地，所述光线选择穿透层的折射率小于所述光线传输层的折射率。
进一步地，在未接收到的所述热源时，所述光线方向控制层的折射率等于所述光线传输层的折射率，所述光线方向控制层的折射率等于所述光线传输层的折射率；在接收到的所述热源时，所述光线方向控制层的折射率与所述光线传输层的折射率不相等；所述光线方向控制层反射所述光线穿过所述光线选择穿透层传输至所述热敏光路调整结构。
进一步地，所述光线方向控制层包括凹凸的漫反射面，所述漫反射面与所述光线传输层相连接。
进一步地，所述光线传输层包括多个槽孔，所述光线传输层设置于所述槽孔内。
进一步地，所述漫反射面包括多个反射单元，所述反射单元的形状和尺寸契合于所述槽孔的形状及尺寸。
进一步地，所述反射单元的形状呈半圆球形，呈阵列式排布。
本发明还提供一种显示面板，其包括上述任一种指纹识别结构。
 有益效果
本发明的技术效果在于，提供一种指纹识别结构及显示面板，通过提出一种类似于TFT器件结构的指纹识别结构，其厚度小，并且不需设置指纹模组，降低了制作成本，同时指纹识别结构可集成到显示面板上，能够降低显示面板的厚度以及成本。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为本发明的实施例中一种指纹识别结构的结构示意图；
图2为本发明的实施例中所述源极和所述漏极的排布结构示意图；
图3为本发明的实施例中所述指纹识别结构在未接收到的所述热源时的原理图；
图4为本发明的实施例中所述指纹识别结构在接收到的所述热源时的原理图；
图5为本发明的实施例中一种显示面板的结构示意图。
图中部件标识如下：
1、光能导通开关，2、热敏光路调整结构，10、指纹识别结构，
11、半导体层，12、源极，13、漏极，
21、光线选择穿透层，22、光线传输层，23、光线方向控制层，
24、光源，100、显示面板，231、反射单元。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
请参阅图1、图3、图4所示，本发明实施例中提供一种指纹识别结构10，其包括光能导通开关1以及热敏光路调整结构2；所述光能导通开关1用于在光线照射下由断路转换为通路；所述热敏光路调整结构2与所述光能导通开关1的一表面相连接，其内部可传输光线，用于在未接收到的热源时所述光线的光路（在图1中用箭头表示）不照射至所述光能导通开关1，并用于在接收到热源时所述光线的光路照射至所述光能导通开关1；其中，所述热源为指纹脊的温度。
所述指纹识别结构10的工作原理是利用指纹脊和指纹谷的温度差异，通过栅极接收到信号差异进行识别。更具体的，手指指纹包括指纹脊和指纹谷，在手指触控所述指纹识别结构10时，所述指纹谷接触不到所述热敏光路调整结构2，而所述指纹脊能够接触到所述热敏光路调整结构2，由于手指具有温度，因此所述指纹脊的温度作为所述热源能够使所述热敏光路调整结构2反射所述光线照射至所述光能导通开关1，所述光能导通开关1在光线照射下由断路转换为通路，从而在对应的位置识别出具有指纹脊。
本实施例通过提出一种类似于TFT器件结构的所述指纹识别结构10，其厚度小，并且不需设置指纹模组，降低了制作成本。
请参阅图1所示，本实施例中，所述光能导通开关1包括半导体层11、源极12以及漏极13；所述半导体层11的上表面与所述热敏光路调整结构2相连接，用于在光线照射下由半导体态转换为导体态；所述源极12与所述半导体层11的下表面的一端电性连接；所述漏极13与所述半导体层11的下表面的另一端电性连接。
所述半导体层11的材质优选为非晶硅。其原理为所述半导体层11中的价电子在受到所述光线照射下，就可以获得足够的能量，摆脱共价键的束缚，成为自由电子，从而在所述半导体层11中形成沟道实现导通所述源极12和所述漏极13。所述漏极13接高电位电压，所述源极12接低电位电压，从而使得所述光能导通开关1实现在光线照射下由断路转换为通路。
请参阅图2所示，本实施例优选所述源极12和所述漏极13的排布方向互为交错设置，更优选的，所述源极12和所述漏极13的排布方向相互垂直。
请参阅图1所示，本实施例中，所述热敏光路调整结构2包括光线选择穿透层21、光线传输层22、光线方向控制层23以及光源24。
具体地讲，所述光线选择穿透层21设于所述热敏光路调整结构2上。所述光线传输层22设于所述光线选择穿透层21上，用于传输所述光线。所述光线方向控制层23设于所述光线传输层22上，用于接收所述热源并在所述热源的影响下控制所述光线的反射方向；具体的，在未接收到的热源时所述光线的反射光路不照射至所述光能导通开关1，在接收到热源时所述光线的反射光路照射至所述光能导通开关1。所述光源24设置于所述光线传输层22的一侧，用于提供所述光线，所述光线的入射角度α大于所述光线选择穿透层21的全反射角，这样光线就无法从所述光线传输层22的上下表面出来。
本实施例中，所述光线选择穿透层21的折射率小于所述光线传输层22的折射率。
请参阅图3所示，本实施例中，在未接收到的所述热源时，即指纹谷接触不到所述热敏光路调整结构2时，所述光线方向控制层23的折射率等于所述光线传输层22的折射率，所述光线方向控制层23的折射率等于所述光线传输层22的折射率；所述光源24发出的光线无法从所述光线传输层22的上下表面出来，所述半导体层11没有受到光线照射，栅极接收到的信号没有发生变化。
请参阅图4所示，在接收到的所述热源时，即指纹脊能接触到所述热敏光路调整结构2时，所述光线方向控制层23和所述光线传输层22的折射率都发生变化，且所述光线方向控制层23的折射率与所述光线传输层22的折射率不相等；所述光线方向控制层23反射所述光线从所述光线传输层22的下表面出来，并穿过所述光线选择穿透层21传输至所述热敏光路调整结构2。光线照射到所述半导体层11上，影响到其传输功能，导致栅极接收到的信号发生变化。
请参阅图1、图3、图4所示，本实施例中，所述光线方向控制层23包括凹凸的漫反射面，所述漫反射面与所述光线传输层22相连接。即所述光线传输层22和所述光线方向控制层23的界面是非齐整的，当所述光线方向控制层23的折射率与所述光线传输层22的折射率不相等时形成漫反射。
请参阅图1、图3、图4所示，本实施例中，所述光线传输层22包括多个槽孔，所述光线传输层22设置于所述槽孔内。
本实施例中，所述漫反射面包括多个反射单元231，所述反射单元231的形状和尺寸契合于所述槽孔的形状及尺寸。
本实施例中，所述反射单元231的形状呈半圆球形，呈阵列式排布。在其他实施例中，所述反射单元231的纵截面形状除了为半圆弧形外，也可为三角形、多边形等，只需满足漫反射功能的形状即可。
请参阅图5所示，本发明还提供一种显示面板100，其包括上述任一种指纹识别结构10。具体的，所述指纹识别结构10为多个，呈阵列式排布。所述指纹识别结构10可集成到所述显示面板100上，能够降低所述显示面板100的厚度以及成本。
本发明实施例提供的显示面板100的有益效果与上述技术方案提供的指纹识别结构10的有益效果相同，在此不做赘述。
其中，上述实施例提供的显示面板100可以为手机、平板电脑、电视机、显示器、笔记本电脑、数码相框或导航仪等任何具有显示功能的产品或部件。
在上述实施方式的描述中，具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
本发明的技术效果在于，提供一种指纹识别结构及显示面板，通过提出一种类似于TFT器件结构的指纹识别结构，其厚度小，并且不需设置指纹模组，降低了制作成本，同时指纹识别结构可集成到显示面板上，能够降低显示面板的厚度以及成本。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

  1. 一种指纹识别结构，其包括：
    光能导通开关，用于在光线照射下由断路转换为通路；以及
    热敏光路调整结构，与所述光能导通开关的一表面相连接，其内部可传输光线，用于在未接收到的热源时所述光线的光路不照射至所述光能导通开关，并用于在接收到热源时所述光线的光路照射至所述光能导通开关；
    其中，所述热源为指纹脊的温度。
  2. 根据权利要求1所述的指纹识别结构，其中，所述光能导通开关包括：
    半导体层，其上表面与所述热敏光路调整结构相连接，用于在光线照射下由半导体态转换为导体态；
    源极，与所述半导体层的下表面的一端电性连接；以及
    漏极，与所述半导体层的下表面的另一端电性连接。
  3. 根据权利要求1所述的指纹识别结构，其中，所述热敏光路调整结构包括：
    光线选择穿透层，设于所述热敏光路调整结构上；
    光线传输层，设于所述光线选择穿透层上，用于传输所述光线；
    光线方向控制层，设于所述光线传输层上，用于接收所述热源并在所述热源的影响下控制所述光线的反射方向；以及
    光源，设置于所述光线传输层的一侧，用于提供所述光线，所述光线的入射角度大于所述光线选择穿透层的全反射角。
  4. 根据权利要求3所述的指纹识别结构，其中，所述光线选择穿透层的折射率小于所述光线传输层的折射率。
  5. 根据权利要求4所述的指纹识别结构，其中，
    在未接收到的所述热源时，所述光线方向控制层的折射率等于所述光线传输层的折射率，所述光线方向控制层的折射率等于所述光线传输层的折射率；
    在接收到的所述热源时，所述光线方向控制层的折射率与所述光线传输层的折射率不相等；所述光线方向控制层反射所述光线穿过所述光线选择穿透层传输至所述热敏光路调整结构。
  6. 根据权利要求3所述的指纹识别结构，其中，所述光线方向控制层包括凹凸的漫反射面，所述漫反射面与所述光线传输层相连接。
  7. 根据权利要求6所述的指纹识别结构，其中，所述光线传输层包括多个槽孔，所述光线传输层设置于所述槽孔内。
  8. 根据权利要求7所述的指纹识别结构，其中，所述漫反射面包括多个反射单元，所述反射单元的形状和尺寸契合于所述槽孔的形状及尺寸。
  9. 根据权利要求8所述的指纹识别结构，其中，所述反射单元的形状呈半圆球形，呈阵列式排布。
  10. 一种显示面板，其包括权利要求1所述的指纹识别结构。
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