WO2020118976A1 - 一种指纹识别柔性显示屏面板 - Google Patents

一种指纹识别柔性显示屏面板 Download PDF

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Publication number
WO2020118976A1
WO2020118976A1 PCT/CN2019/080751 CN2019080751W WO2020118976A1 WO 2020118976 A1 WO2020118976 A1 WO 2020118976A1 CN 2019080751 W CN2019080751 W CN 2019080751W WO 2020118976 A1 WO2020118976 A1 WO 2020118976A1
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WIPO (PCT)
Prior art keywords
light
fingerprint identification
substrate
flexible display
display panel
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Ceased
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PCT/CN2019/080751
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English (en)
French (fr)
Inventor
曹皓然
千必根
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to US17/253,138 priority Critical patent/US11410453B2/en
Publication of WO2020118976A1 publication Critical patent/WO2020118976A1/zh
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • 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 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
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the invention relates to the field of display technology, in particular to a fingerprint identification flexible display panel.
  • the fingerprint recognition module integrated in the screen mainly has three possible solutions: optical, ultrasonic, and capacitive.
  • the optical fingerprint recognition module mainly uses the principle of light refraction and reflection to place the finger on the optical lens. When the finger is illuminated by the built-in light source, the light is emitted from the bottom to the prism and is emitted through the prism. The emitted light is on the surface of the finger. The angle of refraction on the uneven lines and the brightness of the light reflected back will be different to distinguish the fingerprint lines.
  • the ultrasonic fingerprint recognition module relies on the time difference of the reflected wave to detect the distance difference between the ridge and the valley, and draws the fingerprint image according to this distance difference.
  • the principle of the capacitive fingerprint identification module is to integrate the capacitive sense into a chip.
  • the internal capacitive sensor When the fingerprint is pressed on the surface of the chip, the internal capacitive sensor will generate a fingerprint image according to the difference in charge generated by the peak and valley of the fingerprint.
  • TFT-LCD thin film transistor-liquid crystal display, thin-film transistor liquid crystal display panel
  • AMOLED English full name Active-matrix organic light-emitting diode, active matrix organic light-emitting diode display
  • a PI (Polyimide, polyimide) substrate is first coated on the glass substrate, then the upper film layer is manufactured, and finally the glass substrate and the PI substrate are separated by laser peeling technology to obtain a flexible AMOLED panel
  • the panel meets the 3D edge production, and even the folding screen.
  • the accuracy of fingerprint recognition under the current flexible AMOLED panel is low. This is because the color of the PI substrate is light yellow and the light transmittance is low. Therefore, the light emitted by the organic light-emitting layer is reflected at the finger fingerprint and passes through the reflection. The light yellow PI substrate with low light transmission will lose more reflected light, that is, the reflected light received by the optical fingerprint recognition module after passing through the PI substrate is less. The low accuracy of fingerprint recognition under the flexible AMOLED panel will lead to longer unlocking time, which will lead to problems such as poor user experience. Therefore, there is a need to find a new type of fingerprint identification flexible display panel to solve the above problems.
  • the object of the present invention is to provide a fingerprint recognition flexible display panel, which can solve the problems of low fingerprint recognition accuracy, long unlocking time, and poor user experience existing in the current fingerprint recognition structure under the flexible display panel.
  • the present patent provides a fingerprint identification flexible display panel, which includes a PI substrate, a buffer layer, a function layer, a touch layer and an optical fingerprint identification module that are sequentially arranged.
  • the PI substrate is provided with a first light-transmitting area;
  • the buffer layer is provided on the PI substrate;
  • the functional layer is provided on the buffer layer;
  • the touch layer is provided on the functional layer ;
  • the optical fingerprint recognition module is disposed below the first light-transmitting area.
  • the functional layer includes: a TFT array substrate, an organic light emitting diode, and an encapsulation layer.
  • the TFT array substrate is provided on the PI substrate; the organic light emitting diode is provided on the TFT array substrate; and the encapsulation layer is provided on the organic light emitting diode.
  • the first light-transmitting area includes: a first light incident surface and a first light exit surface.
  • the first light incident surface is an interface between the first light-transmitting area and the buffer layer;
  • the first light emitting surface is an interface between the first light-transmitting area and the optical fingerprint recognition module.
  • the first light incident surface is a concave curved surface.
  • first light exit surface is an upward convex curved surface.
  • the etching method is chemical etching.
  • the etching method is laser etching.
  • the first light-transmitting area is composed of a transparent material;
  • the transparent material is one of transparent glue, polyethylene terephthalate, and film-form transparent polyimide.
  • a second light-transmitting area is further provided on the PI substrate.
  • the structure of the second light transmitting area is consistent with the structure of the first light transmitting area.
  • the invention relates to a fingerprint identification flexible display panel.
  • a light-transmitting area on its PI substrate the light reflected by the fingerprint to be recognized can easily pass through the light-transmitting area of the PI substrate to reach the fingerprint recognition module, thereby improving the recognition accuracy of the fingerprint recognition module to recognize the fingerprint And recognition efficiency, which in turn enhances the customer experience.
  • the configuration of the concave lens used in the light-transmitting area can effectively expand the collected fingerprint patterns, which can further improve the accuracy and resolution speed of fingerprint recognition.
  • fingerprints of two fingers can be unlocked at a time.
  • FIG. 1 is a schematic structural diagram of a fingerprint identification flexible display panel of the present invention.
  • FIG. 2 is a partially enlarged view of the circled part of FIG. 1 of the present invention.
  • FIG. 3 is a light propagation diagram of the fingerprint identification flexible display panel of the present invention.
  • Embodiment 2 is a schematic diagram of Embodiment 2 of the fingerprint identification flexible display panel of the present invention.
  • the logo in the picture is as follows:
  • the first light-transmitting area 12.
  • the component When certain components are described as “on” another component, the component may be directly placed on the other component; there may also be an intermediate component, which is placed on the intermediate component , And the intermediate component is placed on another component.
  • the two When a component is described as “installed to” or “connected to” another component, the two can be understood to be “installed” or “connected” directly, or a component “installed to” or “connected to” through an intermediate component Another component.
  • the fingerprint identification flexible display panel includes a PI substrate 1, a buffer layer 2, a functional layer, a touch layer 4 and an optical fingerprint identification module 5 which are arranged in sequence.
  • the PI substrate 1 is provided with a first light-transmitting area 11; the buffer layer 2 is disposed on the PI substrate 1; the functional layer is disposed on the buffer layer 2; the touch layer 4 is disposed on the functional layer; and the optical fingerprint recognition module 5 is disposed on Below the first light transmitting area 11.
  • the functional layer includes a TFT array substrate 31, an organic light emitting diode 32, and an encapsulation layer 33 that are arranged in sequence.
  • the TFT array substrate 31 is provided on the PI substrate 1; the organic light emitting diode 32 is provided on the TFT array substrate 31; and the encapsulation layer 33 is provided on the organic light emitting diode 32.
  • the optical fingerprint recognition module 5 when the fingerprint to be recognized is placed on the touch layer 4 for recognition, the light emitted by the functional layer is reflected at the fingerprint to be recognized, and the reflected light passes through the functional layer and the buffer layer 2 to reach the PI substrate
  • the first light-transmitting area 11 of 1, and passing through the first light-transmitting area 11, is received by the optical fingerprint recognition module 5 and starts to be recognized.
  • the optical fingerprint identification module 5 can quickly identify the fingerprint to be identified.
  • the first light-transmitting area 11 includes a first light incident surface 111 and a first light exit surface 112.
  • the first light incident surface 11 is the interface between the first light transmitting area 11 and the buffer layer 2; the first light emitting surface 112 is the interface between the first light transmitting area 11 and the optical fingerprint recognition module 5.
  • the first light incident surface 111 is a concave curved surface; the first light emitting surface 112 is an upward curved surface.
  • the first light incident surface 111 is formed by etching the buffer layer 2.
  • the etching method may be laser etching, but it is not limited thereto.
  • Laser etching is an important method of laser destruction, that is, the laser beam irradiates the opaque target. With the deposition of laser energy, the local area of the target surface is heated and heated, melted and vaporized, the vaporized material is ejected at high speed, and plasma generation and other physical stages make the The migration of the surface quality of the material.
  • the laser ablation method has the characteristics of cleanliness, strong controllability and wide adaptability.
  • the first light emitting surface 112 is etched by the PI substrate 1.
  • the etching method may be chemical etching, but it is not limited thereto. Chemical etching is to remove the protective film of the area to be etched after exposure to plate making and development, and contact the chemical solution during etching to achieve the effect of dissolving corrosion, forming the effect of unevenness or hollow forming.
  • the first light-transmitting area 11 is designed as a concave lens, and the path after the light reflected by the fingerprint to be recognized enters the optical fingerprint recognition module 5 is changed, so as to expand the collected fingerprint pattern, thereby further improving the fingerprint recognition. Accuracy and resolution speed.
  • the first light-transmitting region 11 is composed of a transparent material.
  • the transparent material is one of transparent glue, polyethylene terephthalate and film-like transparent polyimide.
  • the PI substrate 1 is further provided with a second light-transmitting area 12. This can achieve the effect of unlocking the fingerprints of two fingers at a time. Furthermore, if more light-transmitting areas are provided, the unlocking speed and accuracy can be improved more effectively.
  • the structure of the second light-transmitting area 12 is consistent with the structure of the first light-transmitting area 11. In this way, you can reduce the cost of mold making, reduce installation time, and save production costs.

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  • Theoretical Computer Science (AREA)
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  • Inorganic Chemistry (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Image Input (AREA)
  • Electroluminescent Light Sources (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Laser Beam Processing (AREA)

Abstract

本发明公开了一种指纹识别柔性显示屏面板及其制备方法。包括依次设置的PI基板、缓冲层、功能层、触控层以及光学指纹识别模块。其中PI基板上设置有第一透光区；缓冲层设置于PI基板上；功能层设置于缓冲层上；触控层设置于功能层上；光学指纹识别模块设置于第一透光区下面。本发明通过在PI基板上设置透光区以及将透光区设计成凹透镜构型；提高指纹识别模块对待识别指纹的识别准确性和识别效率，降低解锁时间，提升客户体验。另外，通过在PI基板上设置两个透光区，从而一次可以实现两只手指的指纹解锁。

Description

一种指纹识别柔性显示屏面板 技术领域
本发明涉及显示技术领域，具体涉及一种指纹识别柔性显示屏面板。
 背景技术
集成于屏幕的指纹识别模块主要有光学式，超声波式，电容式三种可能的方案。光学式指纹识别模块主要是利用光的折射和反射原理，将手指放在光学镜片上，手指在内置光源照射下，光从底部射向三棱镜，并经棱镜射出，射出的光线在手指表面指纹凹凸不平的线纹上折射的角度及反射回去的光线明暗就会不一样，以此来分辨指纹的纹路。超声波式指纹识别模块是依靠反射波的时间差探知脊和谷的距离差，根据这个距离差绘制出指纹图像。电容式指纹识别模块的原理是将电容感整合于一块芯片中，当指纹按压芯片表面时，内部电容感测器会根据指纹波峰与波谷而产生的电荷差，从而形成指纹影像。
对于光学式指纹识别而言，需要传感器到指纹这段光传播路径上保持较高的透过率。由于TFT-LCD（英文全称thin film transistor-liquid crystal display，薄膜晶体管液晶显示器面板）有背光板（不透光），因此TFT-LCD很难采用外置的光学指纹识别模块。而AMOLED（英文全称Active-matrix organic light-emitting diode，有源矩阵有机发光二极体显示器）具有自发光，可弯折，色域高，对比度高，相对功耗较低，轻薄等多种优点，越来越成为中高端智能手机的主流配置。
目前的柔性AMOLED面板，首先在玻璃基板上涂布PI（英文全称Polyimide，聚酰亚胺）基板，然后进行上面膜层的制作，最后经过激光剥离技术将玻璃基板与PI基板进行分离得到柔性AMOLED面板，以此满足3D边缘制作，甚至可满足折叠屏幕的制作。
 技术问题
但是目前的柔性AMOLED面板下指纹识别准确性低，这是由于PI基板的颜色为淡黄色，透光率较低，因此经过有机发光层发出的光，在手指指纹处经过反射，在反射途中经过透光性较低的淡黄色的PI基板时会损失较多的反射光，即使得光学指纹识别模块接收到的穿过所述PI基板后的反射光较少。柔性AMOLED面板下指纹识别准确性低就会导致解锁时间加长，进而出现用户体验差等问题。因此，需要寻求一种新型的指纹识别柔性显示屏面板来解决上述问题。
 技术解决方案
本发明的目的是提供一种指纹识别柔性显示屏面板，其能够解决目前柔性显示屏面板下指纹识别结构存在的指纹识别准确性低，解锁时间较长，用户体验差等问题。
为了解决上述问题，本专利提供一种指纹识别柔性显示屏面板，包括依次设置的PI基板、缓冲层、功能层、触控层以及光学指纹识别模块。其中所述PI基板上设置有第一透光区；所述缓冲层设置于所述PI基板上；所述功能层设置于所述缓冲层上；所述触控层设置于所述功能层上；所述光学指纹识别模块设置于所述第一透光区下面。
进一步的，其中所述功能层包括：TFT阵列基板、有机发光二极管以及封装层。所述TFT阵列基板设置于所述PI基板上；所述有机发光二极管设置于所述TFT阵列基板上；所述封装层设置于所述有机发光二极管上。
进一步的，其中所述第一透光区包括：第一入光面以及第一出光面。所述第一入光面为所述第一透光区与所述缓冲层的分界面；所述第一出光面为所述第一透光区与所述光学指纹识别模块的分界面。
进一步的，其中所述第一入光面为下凹的弧形曲面。
进一步的，其中所述第一出光面为上凸的弧形曲面。
进一步的，其中所述第一入光面为所述缓冲层蚀刻而成；所述蚀刻方式为化学蚀刻。
进一步的，其中所述第一出光面为所述PI基板蚀刻而成；所述蚀刻方式为激光蚀刻。
进一步的，其中所述第一透光区由透明材料组成；所述透明材料为透明胶、聚对苯二甲酸乙二醇酯及膜态透明聚酰亚胺中的一种。
进一步的，其中所述PI基板上还设置有第二透光区。
进一步的，其中所述第二透光区的结构与所述第一透光区的结构一致。
 有益效果
本发明涉及的一种指纹识别柔性显示屏面板。首先，通过在其PI基板上设置透光区使得待识别指纹反射后的光能够很容易的穿过PI基板的透光区到达指纹识别模块，从而提高了指纹识别模块对待识别指纹的识别准确性和识别效率，进而提升了客户体验。其次，透光区采用的凹透镜构型，可以有效将采集到的指纹图形扩大，进而能够进一步的提高指纹识别的准确性及分辨速度。另外，通过在PI基板上设置两个透光区，从而一次可以实现两只手指的指纹解锁。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明指纹识别柔性显示屏面板的结构示意图。
图2是本发明图1圆圈部分的局部放大图。
图3是本发明指纹识别柔性显示屏面板的光线传播图。
图4是本发明指纹识别柔性显示屏面板实施例2的示意图。
图中标识如下：
1、PI基板                       2、缓冲层
4、触控层                        5、光学指纹识别模块
11、第一透光区                   12、第二透光区
31、TFT阵列基板                  32、有机发光二极管
33、封装层
111、第一入光面                   112、第一出光面
 本发明的最佳实施方式
以下结合说明书附图详细说明本发明的优选实施例，以向本领域中的技术人员完整介绍本发明的技术内容，以举例证明本发明可以实施，使得本发明公开的技术内容更加清楚，使得本领域的技术人员更容易理解如何实施本发明。然而本发明可以通过许多不同形式的实施例来得以体现，本发明的保护范围并非仅限于文中提到的实施例，下文实施例的说明并非用来限制本发明的范围。
本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是附图中的方向，本文所使用的方向用语是用来解释和说明本发明，而不是用来限定本发明的保护范围。
在附图中，结构相同的部件以相同数字标号表示，各处结构或功能相似的组件以相似数字标号表示。此外，为了便于理解和描述，附图所示的每一组件的尺寸和厚度是任意示出的，本发明并没有限定每个组件的尺寸和厚度。
当某些组件，被描述为“在”另一组件“上”时，所述组件可以直接置于所述另一组件上；也可以存在一中间组件，所述组件置于所述中间组件上，且所述中间组件置于另一组件上。当一个组件被描述为“安装至”或“连接至”另一组件时，二者可以理解为直接“安装”或“连接”，或者一个组件通过一中间组件“安装至”或“连接至”另一个组件。
实施例1
如图1所示，指纹识别柔性显示屏面板，包括依次设置的PI基板1、缓冲层2、功能层、触控层4以及光学指纹识别模块5。其中PI基板1上设置有第一透光区11；缓冲层2设置于PI基板1上；功能层设置于缓冲层2上；触控层4设置于功能层上；光学指纹识别模块5设置于第一透光区11下面。其中功能层包括依次设置的TFT阵列基板31、有机发光二极管32以及封装层33。TFT阵列基板31设置于PI基板1上；有机发光二极管32设置于TFT阵列基板31上；封装层33设置于有机发光二极管32上。
实施过程中，当待识别的指纹放置在触控层4上进行识别时，功能层发出的光线在待识别的指纹处反射，经过反射后的光线向下经过功能层、缓冲层2到达PI基板1的第一透光区11，并穿过第一透光区11，被光学指纹识别模块5接收并开始识别。
如图1所示，指纹识别柔性显示屏面板，由于第一透光区11具有的良好透光性，如此能够使得更多的的指纹反射光穿过第一透光区11到达光学指纹识别模块5，进而使得光学指纹识别模块5能够对待识别指纹进行快速识别。
如图2所示，图1圆圈部分的局部放大图。其中第一透光区11包括第一入光面111以及第一出光面112。第一入光面11为第一透光区11与缓冲层2的分界面；第一出光面112为第一透光区11与光学指纹识别模块5的分界面。
如图2所示，图1圆圈部分的局部放大图。其中第一入光面111为下凹的弧形曲面；第一出光面112为上凸的弧形曲面。
如图2所示，图1圆圈部分的局部放大图。其中第一入光面111为缓冲层2蚀刻而成。其中蚀刻方式可以为激光蚀刻，但不限于此。激光蚀刻是激光破坏的重要方式，即激光束照射不透明靶材，随着激光能量的沉积，靶材表面局部区域受热升温，熔化和汽化，汽化物质高速喷出及等离子体产生等物理阶段，使得材料表面质量发生迁移的现象。激光烧蚀法具有洁净、可控性强及适应面广的特点。
如图2所示，图1圆圈部分的局部放大图。其中第一出光面112为PI基板1蚀刻而成。其中蚀刻方式可以为化学蚀刻，但不限于此。化学蚀刻是通过曝光制版、显影后，将要蚀刻区域的保护膜去除，在蚀刻时接触化学溶液，达到溶解腐蚀的作用，形成凹凸或者镂空成型的效果。
如图3所示，指纹识别柔性显示屏面板的光线传播图。其中第一透光区11被设计为一凹透镜，经过待识别指纹反射后的光线进入光学指纹识别模块5后的路径被改变，达到将采集到的指纹图形扩大的效果，从而进一步提高指纹识别的准确性及分辨速度。
如图1、图2、图3所示，其中第一透光区11由透明材料组成。其中透明材料为透明胶、聚对苯二甲酸乙二醇酯及膜态透明聚酰亚胺中的一种。由此可以提高反射光的透过能力，进而提高屏下指纹识别模块5的识别能力。
实施例2
如图4所示，PI基板1上还设置有第二透光区12。由此可以达到一次可以实现两只手指的指纹解锁的效果。更进一步，如果设置更多的透光区，可以更有效的提高解锁速度与解锁准确性。
如图4所示，其中第二透光区12的结构与第一透光区11的结构一致。这样的话可以降低制模成本，减少安装时间，节约生产成本。
以上仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。
以上对本发明所提供的指纹识别柔性显示屏面板进行了详细介绍。应理解，本文所述的示例性实施方式应仅被认为是描述性的，用于帮助理解本发明的方法及其核心思想，而并不用于限制本发明。在每个示例性实施方式中对特征或方面的描述通常应被视作适用于其他示例性实施例中的类似特征或方面。尽管参考示例性实施例描述了本发明，但可建议所属领域的技术人员进行各种变化和更改。本发明意图涵盖所附权利要求书的范围内的这些变化和更改，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种指纹识别柔性显示屏面板，其中包括：
    PI基板，所述PI基板上设置有第一透光区；
    缓冲层，所述缓冲层设置于所述PI基板上；
    功能层，所述功能层设置于所述缓冲层上；
    触控层，所述触控层设置于所述功能层上；以及
    光学指纹识别模块，所述光学指纹识别模块设置于所述第一透光区下面。
  2. 根据权利要求1所述的指纹识别柔性显示屏面板，其中所述功能层包括：
    TFT阵列基板，所述TFT阵列基板设置于所述PI基板上；
    有机发光二极管，所述有机发光二极管设置于所述TFT阵列基板上；以及
    封装层，所述封装层设置于所述有机发光二极管上。
  3. 根据权利要求1所述的指纹识别柔性显示屏面板，其中所述第一透光区包括：
    第一入光面，所述第一入光面为所述第一透光区与所述缓冲层的分界面；第一出光面，所述第一出光面为所述第一透光区与所述光学指纹识别模块的分界面。
  4. 根据权利要求3所述的指纹识别柔性显示屏面板，其中所述第一入光面为下凹的弧形曲面。
  5. 根据权利要求3所述的指纹识别柔性显示屏面板，其中所述第一出光面为上凸的弧形曲面。
  6. 根据权利要求4所述的指纹识别柔性显示屏面板，其中所述第一入光面为所述缓冲层蚀刻而成；所述蚀刻方式为化学蚀刻。
  7. 根据权利要求5所述的指纹识别柔性显示屏面板，其中所述第一出光面为所述PI基板蚀刻而成；所述蚀刻方式为激光蚀刻。
  8. 根据权利要求1所述的指纹识别柔性显示屏面板，其中所述第一透光区由透明材料组成；所述透明材料为透明胶、聚对苯二甲酸乙二醇酯及膜态透明聚酰亚胺中的一种。
  9. 根据权利要求1所述的指纹识别柔性显示屏面板，其中所述PI基板上还设置有第二透光区。
  10. 根据权利要求9所述的指纹识别柔性显示屏面板，其中所述第二透光区的结构与所述第一透光区的结构一致。
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