WO2017219677A1 - 一种指纹识别显示面板及显示装置 - Google Patents

一种指纹识别显示面板及显示装置 Download PDF

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Publication number
WO2017219677A1
WO2017219677A1 PCT/CN2017/073212 CN2017073212W WO2017219677A1 WO 2017219677 A1 WO2017219677 A1 WO 2017219677A1 CN 2017073212 W CN2017073212 W CN 2017073212W WO 2017219677 A1 WO2017219677 A1 WO 2017219677A1
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Prior art keywords
display panel
infrared
infrared light
units
panel according
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PCT/CN2017/073212
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English (en)
French (fr)
Inventor
许睿
董学
吕敬
王海生
刘英明
丁小梁
李昌峰
贾艳楠
赵利军
郭玉珍
王鹏鹏
韩艳玲
刘伟
吴俊纬
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京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/558,696 priority Critical patent/US10599907B2/en
Publication of WO2017219677A1 publication Critical patent/WO2017219677A1/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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • 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
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • 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
    • H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
    • H01L27/144—Devices controlled by radiation
    • H01L27/146—Imager structures
    • H01L27/14678—Contact-type imagers

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a fingerprint recognition display panel and a display device.
  • the fingerprint recognition display panel generally adopts a capacitive structure to realize the function of recognizing a fingerprint.
  • the embedded fingerprint recognition display panel has a capacitive fingerprint recognition component disposed inside the display panel, which is advantageous for the display panel to be light and thin, but capacitive
  • the fingerprint recognition component easily generates parasitic capacitance with components inside the display panel, so that the fingerprint recognition detection signal and the display signal interfere with each other, thereby affecting the quality of the fingerprint recognition.
  • the embodiments of the present invention provide a fingerprint recognition display panel and a display device for implementing an efficient touch function inside the display panel based on the infrared light effect.
  • an embodiment of the present invention provides a fingerprint identification display panel, including: a driving circuit backplane; a plurality of electroluminescent units arranged in an array disposed on the driving circuit backplane; and disposed on the back of the driving circuit a plurality of infrared light emitting units arranged in an array on the board; a protective cover disposed on the package member; and an array arranged between the protective cover and the film layer of the infrared light emitting unit A plurality of infrared photosensitive sensing units of the cloth.
  • the fingerprint identification display panel further includes a package component for packaging the electroluminescent unit and the infrared light emitting unit.
  • each of the infrared photosensitive sensing units is disposed on a surface of the protective cover plate facing the driving circuit backplane;
  • a substrate is disposed on a surface of the protective cover facing the driving circuit back plate, and each of the infrared photosensitive sensing units is disposed on a surface of the base substrate facing away from the protective cover.
  • the package component is a package film.
  • the package component is a package cover.
  • the package component is a package cover; each of the infrared photosensitive sensing units is disposed on the package cover facing the Drive the surface of the circuit backplane.
  • each of the infrared photosensitive sensing units includes a transparent electrode layer, an infrared photodiode, and a metal electrode layer, which are stacked.
  • the transparent electrode layer is closest to the protective cover.
  • the infrared photodiode is a PIN type infrared photodiode.
  • the infrared photosensitive sensing unit and the infrared light emitting unit are in one-to-one correspondence.
  • the orthographic projections of each of the infrared photosensitive sensing units and each of the infrared light emitting units on the back of the driving circuit are located.
  • the orthographic projections of each of the infrared photosensitive sensing units and each of the infrared light emitting units on the back of the driving circuit are located.
  • each of the infrared light emitting units includes a cathode, an infrared light emitting layer and an anode which are arranged in a stack, wherein
  • the cathode of each of the infrared light emitting units and the cathode of each of the electroluminescent units are of a unitary structure.
  • the embodiment of the present invention further provides a display device, including the fingerprint identification display panel provided by the embodiment of the present invention.
  • a fingerprint identification display panel and a display device integrated a plurality of infrared light-emitting units based on infrared light-sensitive effects on a driving circuit back plate, and are used for packaging the electroluminescent unit and the infrared light-emitting unit.
  • a plurality of infrared photosensitive sensing units are disposed inside the protective cover on the component, that is, between the protective cover and the film layer where the infrared light emitting unit is located.
  • the infrared light emitted from the infrared illuminating unit is irradiated to the ridges and valleys of the finger to reflect the intensity of the infrared photosensitive unit, and the light intensity is different.
  • the difference is converted into the difference of the current signal to realize the detection of the fingerprint.
  • the infrared photosensitive sensing unit detects the fingerprint based on the infrared photosensitive effect, and is not easy to interfere with the internal components of the display panel, and is easy to realize high-quality fingerprint detection.
  • FIG. 1 is a schematic structural diagram of a fingerprint identification display panel according to an embodiment of the present invention.
  • FIG. 2 is a second schematic structural diagram of a fingerprint identification display panel according to an embodiment of the present invention.
  • FIG. 3 is a third schematic structural diagram of a fingerprint identification display panel according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an infrared photosensitive sensing unit in a fingerprint identification display panel according to an embodiment of the present invention.
  • the embodiment of the present invention provides a fingerprint identification display panel, as shown in FIG. 1 to FIG. 3, comprising: a driving circuit backplane 100, and a plurality of electroluminescent units arranged in an array disposed on the driving circuit backplane 100. 200, and a plurality of infrared light emitting units 300 arranged in an array disposed on the driving circuit backplane 100, and a package component 400 for packaging the electroluminescent unit 200 and the infrared light emitting unit 300, disposed on the package component 400
  • the protective cover 500, and a plurality of infrared photosensitive sensing units 600 arranged in an array between the protective cover 500 and the film layer where the infrared light emitting unit 300 is located.
  • a plurality of infrared light-emitting units 300 based on the infrared light-sensitive effect are integrated on the driving circuit backplane 100, and between the protective cover 500 and the film layer of the infrared light-emitting unit 300.
  • a plurality of infrared photosensitive sensing units 600 are provided.
  • the light reflected from the ridge A of the finger to the infrared photosensitive sensing unit 600 is stronger than the light reflected from the valley B of the finger to the intensity of the infrared photosensitive sensing unit 600, by detecting the process of touching the surface of the display panel with the finger.
  • the difference in the magnitude of the current signal output by each infrared photosensitive sensing unit 600 at each moment can detect the two-dimensional fingerprint of the corresponding finger composed of the ridge A and the valley B, thereby realizing fingerprint recognition. Since the infrared light used for fingerprint recognition does not overlap with the visible light band for display, display and fingerprint recognition can be performed simultaneously.
  • the infrared photosensitive sensing unit 600 detects the fingerprint based on the infrared photosensitive effect, the internal components of the display panel are less likely to cause interference, and high-quality fingerprint detection is easily realized.
  • the infrared photosensitive sensing unit 600 in order to enable the infrared photosensitive sensing unit 600 to receive the infrared light reflected by the fingerprint, generally, the infrared photosensitive sensing unit 600 is required to be disposed in the infrared light emitting unit 300. In the upper film layer, and in order to ensure the strength of the surface of the display panel, generally, the infrared photosensitive sensing unit 600 may be disposed between the protective cover 500 and the driving circuit back plate 100.
  • the position of the infrared photosensitive sensing unit 600 may be specifically set according to the structure of the package component 400 for packaging the electroluminescent unit 200 and the infrared light emitting unit 300.
  • FIG. 1 is a schematic structural diagram of a fingerprint identification display panel according to an embodiment of the present invention.
  • the package component 400 when the package component 400 is packaged by using a package cover, since the package cover has a certain strength, thus, each of the infrared photosensitive sensing units 600 can be disposed on the surface of the package cover facing the driving circuit backplane 100 by means of a package cover. At this time, the infrared photosensitive sensing unit 600 is located inside the display package.
  • a polarizer 700 attached to the surface of the package cover is generally disposed between the package cover and the protective cover 500, and a cover plate 500 is fixed on the surface of the polarizer 700.
  • Optical Adhesive 800 OCA
  • FIG. 2 is a second schematic structural diagram of a fingerprint identification display panel according to an embodiment of the present invention.
  • each of the infrared photosensitive sensing units 600 is disposed on a surface of the protective cover 500 facing the driving circuit backplane 100.
  • a polarizer 700 attached to the surface of the package cover is generally disposed between the package cover and the protective cover 500, and a cover plate 500 is fixed on the surface of the polarizer 700.
  • a base substrate 900 may be disposed on a surface of the protective cover 500 facing the driving circuit back plate 100, and each of the infrared photosensitive sensing units 600 may be disposed on a surface of the base substrate 900 facing away from the protective cover 500.
  • FIG. 3 is a third schematic structural diagram of a fingerprint identification display panel according to an embodiment of the present invention.
  • the package component 400 when the package component 400 is packaged by using a package film, since the package film is composed of a plurality of layers of inorganic and organic thin films, the strength thereof is insufficient to support the infrared photosensitive sensing unit 600, and therefore, the surface of the protective cover 500 is driven.
  • a substrate substrate 900 is disposed on a surface of the circuit backplane 100, and each of the infrared photosensitive sensing units 600 may be disposed on a surface of the base substrate 900 facing away from the protective cover 500.
  • FIG. 1 As shown in FIG.
  • a polarizer 700 attached to the surface of the base substrate 900 facing away from the infrared photosensitive sensing unit 600 is also disposed between the base substrate 900 and the protective cover 500, and An optical paste 800 (OCA) for fixing the protective cover 500 to the surface of the polarizer 700.
  • OCA optical paste 800
  • each infrared photosensitive sensor may include: a transparent electrode layer 601, an infrared photodiode 602, and a metal electrode layer 603; wherein the transparent electrode layer 601 is closest to the protective cover 500, and FIG.
  • the infrared photosensitive sensing unit 600 shown in FIG. 2 is directly disposed on the back surface of the protective cover 500.
  • a transparent electrode layer 601 such as ITO, an infrared photodiode 602, and a metal electrode layer can be sequentially formed. 603; wherein one end of the infrared photodiode 602 is connected to the transparent electrode layer 601, and the other end is connected to the metal electrode layer 603, and the connected infrared photodiode 602 can be applied with a voltage through the transparent electrode layer 601.
  • the pattern of the metal electrode layer 603 is generally The wire shape can be used to derive the current signal of the infrared photodiode 602.
  • the infrared photodiode 602 may specifically adopt a PIN type infrared photodiode.
  • each of the infrared light emitting units 300 may specifically include: a cathode, an infrared light emitting layer and an anode which are arranged in a stack.
  • the cathode of each infrared light emitting unit 300 may be integrated with the cathode of each electroluminescent unit 200, that is, an unpatterned film layer.
  • the anode of each infrared light emitting unit 300 may also be The anode of each electroluminescent unit 200 is disposed in the same layer.
  • each of the infrared photosensitive sensing units 600 and each of the infrared light emitting units 300 are in one-to-one correspondence;
  • An infrared light sensing unit 600 and a plurality of infrared light emitting units 300 may be associated with each other, or a plurality of infrared light sensing units 600 and one infrared light emitting unit 300 may be corresponding to each other, which is not limited herein.
  • the setting positions of the infrared photosensitive sensing unit 600 and the infrared light emitting unit 300 are not limited. Specifically, the infrared photosensitive sensing unit 600 and the infrared light emitting unit 300 may be set only. In the display area, in order to not affect the normal display, as shown in FIG. 1 to FIG. 3, the orthographic projections of the infrared photosensitive sensing units 600 and the respective infrared light emitting units 300 on the driving circuit backplane 100 should be located in the respective electroluminescent units 200.
  • the gap between the two is located in the non-display area, that is, the function of the touch detection can be completed at the same time as the fingerprint recognition; or the infrared light sensing unit 600 and the infrared light emitting
  • the unit 300 may also be disposed only in the frame area, that is, the frame area of the infrared light sensing unit 600 and the infrared light emitting unit 300 on the driving circuit backplane 100 are located outside the effective display area; or the infrared photosensitive sensing unit 600 and The infrared illuminating unit 300 can be disposed in the effective display area and the frame area at the same time, which is not limited herein.
  • an embodiment of the present invention further provides a display device, including the above-mentioned fingerprint identification display panel provided by the embodiment of the present invention, which may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, and a digital device. Any product or component that has a display function, such as a photo frame or a navigator.
  • a display device including the above-mentioned fingerprint identification display panel provided by the embodiment of the present invention, which may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, and a digital device. Any product or component that has a display function, such as a photo frame or a navigator.
  • the display device reference may be made to the embodiment of the fingerprint identification display panel described above, and the repeated description is omitted.
  • the fingerprint identification display panel and the display device provided by the embodiments of the present invention integrate a plurality of infrared light-emitting units based on the infrared light-sensing effect on the back surface of the driving circuit, and are used for packaging the components of the electroluminescent unit and the infrared light-emitting unit.
  • a plurality of infrared photosensitive sensing units are disposed inside the protective cover, that is, between the protective cover and the film layer where the infrared light emitting unit is located.
  • the infrared light emitted from the infrared illuminating unit is irradiated to the ridges and valleys of the finger to reflect the intensity of the infrared photosensitive unit, and the light intensity is different.
  • the difference is converted into the difference of the current signal to realize the detection of the fingerprint.
  • the infrared photosensitive sensing unit detects the fingerprint based on the infrared photosensitive effect, and is not easy to interfere with the internal components of the display panel, and is easy to realize high-quality fingerprint detection.

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Abstract

一种指纹识别显示面板及显示装置，在驱动电路背板（100）上集成了基于红外光敏效应的多个红外发光单元（300），并在用于封装电致发光单元（200）和红外发光单元（300）的封装部件（400）之上的保护盖板（500）内部，即保护盖板（500）与红外发光单元（300）所在膜层之间设置多个红外光敏感应单元（600）。在用户手指靠近显示面板的表面时，由于手指皮肤表面具有凹凸不平的脊和谷，红外发光单元（300）发出的红外光照射到手指的脊和谷位置反射到红外光敏感应单元（600）的光强不同，光强差异转换为电流信号差异从而实现指纹的检测，红外光敏感应单元（600）基于红外光敏效应对指纹进行检测，与显示面板内部部件不易产生干扰，容易实现高质量的指纹检测。

Description

一种指纹识别显示面板及显示装置
交叉引用
本申请要求于2016年6月23日提交的申请号为201610466587.4、名称为“一种指纹识别显示面板及显示装置”的中国专利申请的优先权，该中国专利申请的全部内容通过引用全部并入本文。
技术领域
本发明涉及显示技术领域，尤其涉及一种指纹识别显示面板及显示装置。
背景技术
随着显示技术的飞速发展，具有指纹识别功能的显示面板已经逐渐遍及人们的生活中。目前，指纹识别显示面板一般是采用电容式结构实现识别指纹的功能，例如内嵌式指纹识别显示面板是将电容式指纹识别部件设置在显示面板内部，其有利于显示面板轻薄化，但电容式指纹识别部件容易与显示面板内部的部件产生寄生电容，使指纹识别检测信号和显示信号之间相互干扰，从而影响指纹识别的质量。
发明内容
有鉴于此，本发明实施例提供了一种指纹识别显示面板及显示装置，用以基于红外光敏效应在显示面板内部实现高效触控功能。
因此，本发明实施例提供了一种指纹识别显示面板，其包括：驱动电路背板；设置在所述驱动电路背板上的呈阵列排布的多个电致发光单元；设置在驱动电路背板上的呈阵列排布的多个红外发光单元；设置在所述封装部件之上的保护盖板；以及设置在所述保护盖板与所述红外发光单元所在膜层之间的呈阵列排布的多个红外光敏感应单元。
在一种可能的实现方式中，上述指纹识别显示面板还包括用于封装所述电致发光单元和所述红外发光单元的封装部件。
在一种可能的实现方式中，在本发明实施例提供的上述指纹识别显示面板中，各所述红外光敏感应单元设置在保护盖板的面向所述驱动电路背板的表面上；或，
在所述保护盖板的面向所述驱动电路背板的表面上设置有衬底基板，各所述红外光敏感应单元设置在衬底基板的背离所述保护盖板的表面上。
在一种可能的实现方式中，在本发明实施例提供的上述指纹识别显示面板中，所述封装部件为封装薄膜。
在一种可能的实现方式中，在本发明实施例提供的上述指纹识别显示面板中，所 述封装部件为封装盖板。
在一种可能的实现方式中，在本发明实施例提供的上述指纹识别显示面板中，所述封装部件为封装盖板；各所述红外光敏感应单元设置在所述封装盖板的面向所述驱动电路背板的表面上。
在一种可能的实现方式中，在本发明实施例提供的上述指纹识别显示面板中，各所述红外光敏感应单元包括层叠设置的透明电极层、红外光敏二极管和金属电极层，其中，所述透明电极层与所述保护盖板的距离最近。
在一种可能的实现方式中，在本发明实施例提供的上述指纹识别显示面板中，所述红外光敏二极管为PIN型红外光敏二极管。
在一种可能的实现方式中，在本发明实施例提供的上述指纹识别显示面板中，所述红外光敏感应单元和所述红外发光单元一一对应。
在一种可能的实现方式中，在本发明实施例提供的上述指纹识别显示面板中，各所述红外光敏感应单元和各所述红外发光单元在所述驱动电路背板上的正投影均位于各所述电致发光单元之间的间隙处。
在一种可能的实现方式中，在本发明实施例提供的上述指纹识别显示面板中，各所述红外光敏感应单元和各所述红外发光单元在所述驱动电路背板上的正投影均位于有效显示区域之外的边框区域。
在一种可能的实现方式中，在本发明实施例提供的上述指纹识别显示面板中，各所述红外发光单元包括层叠设置的阴极、红外发光层和阳极，其中，
各所述红外发光单元的阴极与各所述电致发光单元的阴极为一体结构。
另一方面，本发明实施例还提供了一种显示装置，包括本发明实施例提供的上述指纹识别显示面板。
本发明实施例的有益效果包括：
本发明实施例提供的一种指纹识别显示面板及显示装置，在驱动电路背板上集成了基于红外光敏效应的多个红外发光单元，并在用于封装电致发光单元和红外发光单元的封装部件之上的保护盖板内部，即保护盖板与红外发光单元所在膜层之间设置多个红外光敏感应单元。在用户手指靠近显示面板的表面时，由于手指皮肤表面具有凹凸不平的脊和谷，红外发光单元发出的红外光照射到手指的脊和谷位置反射到红外光敏感应单元的光强不同，光强差异转换为电流信号差异从而实现指纹的检测，红外光敏感应单元基于红外光敏效应对指纹进行检测，与显示面板内部部件不易产生干扰，容易实现高质量的指纹检测。
附图说明
图1为本发明实施例提供的指纹识别显示面板的结构示意图之一；
图2为本发明实施例提供的指纹识别显示面板的结构示意图之二；
图3为本发明实施例提供的指纹识别显示面板的结构示意图之三；
图4为本发明实施例提供的指纹识别显示面板中一个红外光敏感应单元的结构示意图。
具体实施方式
下面结合附图，对本发明实施例提供的指纹识别显示面板及显示装置的具体实施方式进行详细地说明。
附图中各部件的形状和大小不反映真实比例，目的只是示意说明本发明内容。
本发明实施例提供了一种指纹识别显示面板，如图1至图3所示，包括：驱动电路背板100，设置在驱动电路背板100上的呈阵列排布的多个电致发光单元200，以及设置在驱动电路背板100上的呈阵列排布的多个红外发光单元300，用于封装电致发光单元200和红外发光单元300的封装部件400，设置在封装部件400之上的保护盖板500，以及设置在保护盖板500与红外发光单元300所在膜层之间的呈阵列排布的多个红外光敏感应单元600。
本发明实施例提供的上述指纹识别显示面板中，在驱动电路背板100上集成了基于红外光敏效应的多个红外发光单元300，并在保护盖板500与红外发光单元300所在膜层之间设置多个红外光敏感应单元600。在有用户手指靠近显示面板的表面时，由于手指皮肤表面具有凹凸不平的脊A和谷B，红外发光单元300发出的红外光照射到手指的脊A和谷B位置反射到红外光敏感应单元600的光强不同，一般地，手指的脊A反射到红外光敏感应单元600的光强大于手指的谷B反射到红外光敏感应单元600的光强，通过检测在手指碰触到显示面板表面的过程中，每个时刻各红外光敏感应单元600输出的电流信号大小差异，就可以检测出对应手指由脊A和谷B构成的指纹二维图样，从而实现指纹识别。由于指纹识别所使用的红外光与显示用的可见光波段互不重叠，因此，显示和指纹识别可同时进行。并且，由于红外光敏感应单元600基于红外光敏效应对指纹进行检测，与显示面板内部部件不易产生干扰，容易实现高质量的指纹检测。
在具体实施时，在本发明实施例提供的上述指纹识别显示面板中，为了使红外光敏感应单元600可以接收到指纹反射的红外光，一般地，需要红外光敏感应单元600设置在红外发光单元300的上方膜层中，并且，为了保证显示面板表面的强度，一般地，红外光敏感应单元600可设置在保护盖板500和驱动电路背板100之间。
具体地，在本发明实施例提供的上述指纹识别显示面板中，可以根据用于封装电致发光单元200和红外发光单元300的封装部件400的结构来具体设置红外光敏感应单元600的位置。
图1为本发明实施例提供的指纹识别显示面板的结构示意图之一。例如，如图1所示，在封装部件400采用封装盖板进行封装时，由于封装盖板具有一定的强度，因 此，可以利用封装盖板，将各红外光敏感应单元600设置在封装盖板的面向驱动电路背板100的表面上。此时，红外光敏感应单元600位于显示封装的内部。此时，如图1所示，在封装盖板和保护盖板500之间一般还会设置贴附于封装盖板表面的偏光片700，以及用于将保护盖板500固定在偏光片700表面的光学胶800(OCA)。
或者，也可以利用保护盖板500。图2为本发明实施例提供的指纹识别显示面板的结构示意图之二。如图2所示，将各红外光敏感应单元600设置在保护盖板500的面向驱动电路背板100的表面上。此时，如图2所示，在封装盖板和保护盖板500之间一般还会设置贴附于封装盖板表面的偏光片700，以及用于将保护盖板500固定在偏光片700表面的光学胶800(OCA)。或者，也可以在保护盖板500的面向驱动电路背板100的表面上设置衬底基板900，各红外光敏感应单元600可以设置在衬底基板900的背离保护盖板500的表面上。
图3为本发明实施例提供的指纹识别显示面板的结构示意图之三。如图3所示，在封装部件400采用封装薄膜进行封装时，由于封装薄膜为多层无机和有机薄膜组成，其强度不足以支撑红外光敏感应单元600，因此，在保护盖板500的面向驱动电路背板100的表面上设置衬底基板900，各红外光敏感应单元600可以设置在衬底基板900的背离保护盖板500的表面上。此时，一般地，如图3所示，在衬底基板900与保护盖板500之间也会设置贴附于衬底基板900的背离红外光敏感应单元600的表面上的偏光片700，以及用于将保护盖板500固定在偏光片700的表面上的光学胶800(OCA)。
在具体实施时，在本发明实施例提供的上述指纹识别显示面板中，为了使红外光敏感应单元600可以实现将指纹反射的红外光差异转换为电流信号差异后输出，一般地，各红外光敏感应单元600，如图4所示，可以包括：层叠设置的透明电极层601、红外光敏二极管602和金属电极层603；其中，透明电极层601与保护盖板500的距离最近，图4是以图2所示的红外光敏感应单元600直接设置于保护盖板500的背面上为例，在保护盖板500的表面上可以依次制作诸如ITO的透明电极层601，红外光敏二极管602，以及金属电极层603；其中，红外光敏二极管602的一端与透明电极层601连接，另一端与金属电极层603连接，通过透明电极层601可以对连接的红外光敏二极管602加载电压，金属电极层603的图案一般为导线状，可以将红外光敏二极管602的电流信号导出。
在具体实施时，在本发明实施例提供的上述指纹识别显示面板中，红外光敏二极管602具体可以采用PIN型红外光敏二极管。
在具体实施时，在本发明实施例提供的上述指纹识别显示面板中，各红外发光单元300可以具体包括：层叠设置的阴极、红外发光层和阳极。为了节省制作工艺，各红外发光单元300的阴极可以与各电致发光单元200的阴极为一体结构，即为一个无图案的膜层。进一步地，为了简化制作工艺，还可以将各红外发光单元300的阳极与 各电致发光单元200的阳极同层设置。
在具体实施时，在本发明实施例提供的上述指纹识别显示面板中，优选地，如图1至图3所示，各红外光敏感应单元600和各红外发光单元300一一对应；当然，也可以一个红外光敏感应单元600和多个红外发光单元300对应，或多个红外光敏感应单元600和一个红外发光单元300对应，在此不做限定。
进一步地，在本发明实施例提供的上述指纹识别显示面板中，并不限定红外光敏感应单元600和红外发光单元300的设置位置，具体地，红外光敏感应单元600和红外发光单元300可以仅设置在显示区域，为了不影响正常显示，如图1至图3所示，各红外光敏感应单元600和各红外发光单元300在驱动电路背板100上的正投影应均位于各电致发光单元200之间的间隙处，即避开电致发光单元200的区域而位于非显示区域，此时在进行指纹识别的同时还可以完成触控侦测的功能；或者，红外光敏感应单元600和红外发光单元300也可以仅设置在边框区域，即红外光敏感应单元600和红外发光单元300在驱动电路背板100上的正投影均位于有效显示区域之外的边框区域；或者，红外光敏感应单元600和红外发光单元300可以同时设置在有效显示区域和边框区域，在此不做限定。
基于同一发明构思，本发明实施例还提供了一种显示装置，包括本发明实施例提供的上述指纹识别显示面板，该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的实施可以参见上述指纹识别显示面板的实施例，重复之处不再赘述。
本发明实施例提供的上述指纹识别显示面板及显示装置，在驱动电路背板上集成了基于红外光敏效应的多个红外发光单元，并在用于封装电致发光单元和红外发光单元的封装部件之上的保护盖板内部，即保护盖板与红外发光单元所在膜层之间设置多个红外光敏感应单元。在用户手指靠近显示面板的表面时，由于手指皮肤表面具有凹凸不平的脊和谷，红外发光单元发出的红外光照射到手指的脊和谷位置反射到红外光敏感应单元的光强不同，光强差异转换为电流信号差异从而实现指纹的检测，红外光敏感应单元基于红外光敏效应对指纹进行检测，与显示面板内部部件不易产生干扰，容易实现高质量的指纹检测。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (13)

  1. 一种指纹识别显示面板，其特征在于，包括：驱动电路背板；设置在所述驱动电路背板上的呈阵列排布的多个电致发光单元；设置在驱动电路背板上的呈阵列排布的多个红外发光单元；设置在所述封装部件之上的保护盖板；以及设置在所述保护盖板与所述红外发光单元所在膜层之间的呈阵列排布的多个红外光敏感应单元。
  2. 如权利要求1所述的指纹识别显示面板，其特征在于，所述指纹识别显示面板还包括用于封装所述电致发光单元和所述红外发光单元的封装部件。
  3. 如权利要求1所述的指纹识别显示面板，其特征在于，各所述红外光敏感应单元设置在保护盖板的面向所述驱动电路背板的表面上；或，
    在所述保护盖板的面向所述驱动电路背板的表面上设置有衬底基板，各所述红外光敏感应单元设置在衬底基板的背离所述保护盖板的表面上。
  4. 如权利要求3所述的指纹识别显示面板，其特征在于，所述封装部件为封装薄膜。
  5. 如权利要求3所述的指纹识别显示面板，其特征在于，所述封装部件为封装盖板。
  6. 如权利要求1所述的指纹识别显示面板，其特征在于，所述封装部件为封装盖板；各所述红外光敏感应单元设置在所述封装盖板的面向所述驱动电路背板的表面上。
  7. 如权利要求1所述的指纹识别显示面板，其特征在于，各所述红外光敏感应单元包括层叠设置的透明电极层、红外光敏二极管和金属电极层，其中，所述透明电极层与所述保护盖板的距离最近。
  8. 如权利要求7所述的指纹识别显示面板，其特征在于，所述红外光敏二极管为PIN型红外光敏二极管。
  9. 如权利要求1-8任一项所述的指纹识别显示面板，其特征在于，所述红外光敏感应单元和所述红外发光单元一一对应。
  10. 如权利要求9所述的指纹识别显示面板，其特征在于，各所述红外光敏感应单元和各所述红外发光单元在所述驱动电路背板上的正投影均位于各所述电致发光单元之间的间隙处。
  11. 如权利要求9所述的指纹识别显示面板，其特征在于，各所述红外光敏感应单元和各所述红外发光单元在所述驱动电路背板上的正投影均位于有效显示区域之外的边框区域。
  12. 如权利要求10所述的指纹识别显示面板，其特征在于，各所述红外发光单元包括层叠设置的阴极、红外发光层和阳极，其中，
    各所述红外发光单元的阴极与各所述电致发光单元的阴极为一体结构。
  13. 一种显示装置，其特征在于，包括如权利要求1-13任一项所述的指纹识别显示面板。
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