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WO2018145461A1 - 显示装置 - Google Patents

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Publication number
WO2018145461A1
WO2018145461A1 PCT/CN2017/101912 CN2017101912W WO2018145461A1 WO 2018145461 A1 WO2018145461 A1 WO 2018145461A1 CN 2017101912 W CN2017101912 W CN 2017101912W WO 2018145461 A1 WO2018145461 A1 WO 2018145461A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
disposed
substrate
layer
region
Prior art date
Application number
PCT/CN2017/101912
Other languages
English (en)
French (fr)
Inventor
王海生
刘英明
丁小梁
许睿
赵利军
贾亚楠
顾品超
秦云科
郭玉珍
韩艳玲
吴俊纬
李昌峰
董学
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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 US15/767,357 priority Critical patent/US10564464B2/en
Publication of WO2018145461A1 publication Critical patent/WO2018145461A1/zh

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    • 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13318—Circuits comprising a photodetector
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/155—Electrodes
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • 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
    • G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
    • 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13312—Circuits comprising photodetectors for purposes other than feedback
    • 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
    • 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 
    • G02F1/15—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 an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/157—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/44—Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a display device.
  • devices for implementing the texture recognition function such as a mobile phone are installed in a non-display area such as a home button or a display device, and the future development direction of the display device is ultra-thin, high color gamut, wide viewing angle, and integration.
  • Various sensing functions When the optical sensor (Sensor) that realizes the line recognition is integrated inside the display panel, the distance between the sensor and the finger contact surface is enlarged, causing the distance of the finger reflected light to reach the sensor to become larger, and the light reflected by the finger is reached. Scattering occurs before the sensor, as shown in Figure 1, so that a single optical sensor receives fingerprint information of multiple valleys, resulting in blurred optical fingerprint patterns, reducing the accuracy of texture recognition.
  • An embodiment of the present disclosure provides a display device including a display panel having a plurality of pixel units, and a protective cover disposed on a light emitting surface of the display panel, disposed on a side of the pixel unit facing away from the light emitting surface a plurality of photosensitive devices for pattern recognition, and a light collimating member disposed between the protective cover and the plurality of photosensitive devices;
  • the orthographic projection of the photosensitive device and the pixel unit on the display panel does not overlap each other;
  • the light collimating member has a light transmitting region above the photosensitive device and a light blocking region outside the light transmitting region.
  • the light collimating member includes: a first light collimating member disposed between the display panel and the protective cover And/or a second light collimating member disposed inside the display panel, the first light collimating member and the second optical collimating member
  • the photosensitive device is disposed in a non-light emitting region of the display panel display area; the first light collimating member and the first The two-light collimating member has the light-shielding region only in the non-light-emitting region in which the photosensitive device is disposed.
  • the first light collimating member is configured to have the light shielding region only in the non-light emitting region where the photosensitive device is disposed. Shading layer.
  • the light shielding layer is a metal layer.
  • the metal layer constitutes a plurality of touch detection electrodes.
  • the first light collimating member comprises: a first transparent electrode layer, an electrochromic layer and a second transparent electrode which are sequentially stacked Layer; among them,
  • the first transparent electrode layer and/or the second transparent electrode layer have a hollow region above the photosensitive device, and at least the non-light emitting region provided with the photosensitive device has an electrode pattern;
  • the electrochromic layer has a black state in a region where a set voltage difference exists between the first transparent electrode layer and the second transparent electrode layer, and is transparent in other regions.
  • the electrochromic layer and the first transparent electrode layer are disposed in a whole layer of the display panel display area, and the second The transparent electrode layer has an electrode pattern only in the non-light-emitting region where the photosensitive device is disposed and has the hollowed-out region above the photosensitive device.
  • the first light collimating member includes: a first substrate and a second substrate, and is disposed on the first substrate and the first a liquid crystal layer between the two substrates, and an electrode structure between the first substrate and the second substrate;
  • the electrode structure is configured to control a region of the liquid crystal layer above the photosensitive device to be the light transmissive region, and the non-light emitting region provided with the photosensitive device is the light shielding region.
  • the display panel includes: a substrate, a pixel control circuit device disposed on the substrate, disposed in the a plurality of light emitting elements on the pixel control circuit device, and a package film covering the light emitting element; the photosensitive device being disposed on a surface of the base substrate facing away from the side of the light emitting element, or disposed on the substrate Between the substrate and the pixel control circuit device.
  • the second light collimating member includes: a gate film layer and a source/drain film layer in the pixel control circuit device And one of the anode layers in the light-emitting element or a light-shielding member provided in the same layer, the light-shielding member having the light-shielding region in the non-light-emitting region provided with the photosensitive device, and in the photosensitive device
  • the light transmissive area is provided above.
  • the insulation between the adjacent two layers of the light shielding members has a via corresponding to the light-transmitting region of the light-shielding member, and a material of the light-shielding member at the upper layer covers a sidewall of the via.
  • the display panel includes: an array substrate and an opposite substrate, and is disposed between the array substrate and the opposite substrate a liquid crystal layer; the photosensitive device is disposed on a surface of the array substrate facing the liquid crystal layer.
  • the second light collimating member is disposed on a side of the opposite substrate facing the array substrate or disposed on the side A black matrix of one side of the array substrate facing the opposite substrate, the black matrix having the light transmissive area above the photosensitive device.
  • the display panel includes: an array substrate and an opposite substrate, and is disposed between the array substrate and the opposite substrate Liquid crystal layer
  • the photosensitive device is disposed on a non-display area of the array substrate facing the liquid crystal layer;
  • the first light collimating member is a black frame disposed on a side surface of the protective cover plate facing the opposite substrate, and the black frame has the light transmitting region above the photosensitive device;
  • the second light collimating member is a light shielding member disposed in the same layer as the black matrix disposed between the array substrate and the opposite substrate, and the light shielding member has the light transmitting region above the photosensitive device .
  • FIG. 1 is a schematic structural view of a display device in the prior art
  • FIG. 2 is a schematic structural diagram of a display device according to an embodiment of the present disclosure
  • FIG. 3A and FIG. 3B are schematic diagrams showing the principle of a light collimating member in a display device according to an embodiment of the present disclosure
  • FIGS. 4A to 4D are schematic structural views of a display device according to an embodiment of the present disclosure when the display device is an electroluminescent display panel;
  • 5A and 5B are schematic structural views of a display device according to an embodiment of the present disclosure when the display device is a liquid crystal display panel.
  • An embodiment of the present disclosure provides a display device, as shown in FIG. 2, including: a plurality of pixel units 12 The display panel 100, the protective cover 200 disposed on the light-emitting surface of the display panel 100, the plurality of photosensitive devices 300 for pattern recognition disposed on the side of the pixel unit 12 facing away from the light-emitting surface, and the protective cover 200 and a light collimating member 400 between the plurality of photosensitive devices 300; wherein
  • the orthographic projection of the photosensitive device 300 and the pixel unit 12 on the display panel 100 does not overlap each other;
  • the light collimating member 400 has a light transmitting region A above the photosensitive device 300 and a light blocking region B outside the light transmitting region A.
  • the light collimating member 400 disposed between the protective cover 200 and the plurality of photosensitive devices 300 is added, and the optical collimating member 400 is above the photosensitive device 300.
  • the light-shielding area B can filter stray light of a part of adjacent valley ridges (ie, ridges 10 and valleys 11) and display light emission from the pixel unit is incident to
  • the light-receiving device 300 can ensure that the reflected light of the valley ridge is effectively incident on the corresponding photosensitive device 300, thereby improving the recognition rate of the photosensitive device for the texture, thereby improving the accuracy and sharpness of the texture recognition image.
  • the light collimating member 400 in order to ensure that a small angle of the valley reflected light is incident into the corresponding photosensitive device 300, it is necessary to ensure that the light collimating member 400 has a certain thickness.
  • the thickness of the light collimating member 400 is thicker, the light can be made. The smaller the observation angle, the better the effect of collimating light can be achieved.
  • the optical collimating member 400 The thickness needs to be above 100 ⁇ m to achieve a good collimation effect.
  • the current manufacturing process cannot achieve a film thickness of such a high thickness.
  • the thinning design of the display panel is disadvantageous.
  • a plurality of film layers which are stacked and have a set pitch for example, the upper and lower film layers 321 and 322 shown in FIG. 3B
  • a film layer having a higher thickness requirement for example, the film layer 311 shown in FIG. 3A
  • an equivalent light collimating effect is achieved.
  • the light collimating member 400 may specifically include: a first light level disposed between the display panel 100 and the protective cover 200 a straight member 410, and a second light collimating member 420 disposed inside the display panel 100, the first light collimating member 410 and the second light collimating member 420 correspond to each other and have a light transmitting region A on the display panel 100
  • the orthogonal projections overlap, that is, the light-transmitting areas A of the two correspond.
  • the orthographic projections of the light transmissive regions A on the display panel 100 completely overlap, that is, the light transmissive regions A of the two are completely identical.
  • the light collimating member 400 may have only the first light collimating member 410 disposed between the display panel 100 and the protective cover 200, or the second optical collimating member 420 disposed inside the display panel 100, which is not Make a limit.
  • the first light collimating member 410 is illustrated as being embedded in the surface of the protective cover 200 in the drawings, the present invention is not limited thereto, and the light collimating member 410 may also be from the protective cover. The surface of the 200 protrudes or may be disposed at other positions between the protective cover 200 and the display panel 100.
  • the light collimating member 400 including the first light collimating member 410 and the second light collimating member 420 will be made by taking the light collimating member 400 including the first light collimating member 410 and the second light collimating member 420 as an example.
  • the photosensitive device 300 can be integrated into the display area of the display panel 100.
  • the photosensitive device 300 is generally disposed.
  • the non-light-emitting areas of the display area of the display panel 100 that is, the gaps between the pixel units 12 as shown in FIG.
  • the first light collimating member 410 and the second light collimating member 420 have the light shielding region B only in the non-light emitting region in which the photosensitive device 300 is disposed.
  • the light-shielding region B of the first light collimating member 410 can filter stray light of a portion of the valley ridge, and the light-shielding region B of the second light collimating member 420 can not only filter the stray light of the valley above the portion, but also block most of the display light incident. To the photosensitive device 300.
  • the photosensitive device 300 when the photosensitive device 300 is disposed on the non-light emitting region of the display area of the display panel 100, the first light collimating member 410 and the second light collimating member 420 in the above display device provided by the embodiments of the present disclosure
  • the structure there are a variety of ways to implement the structure, which are described in detail below through specific embodiments.
  • Embodiment 1 The arrangement of the first light collimating member 410.
  • the display panel 100 may specifically adopt the electroluminescent display panel as shown in FIG. 4A to FIG. 4D, or may be as shown in FIG. 5A to FIG. 5B. LCD panel.
  • the display panel 100 specifically includes a base substrate 110, and a pixel control circuit device 120 disposed on the base substrate 110.
  • the first light collimating member 410 is disposed between the protective cover 200 and the encapsulating film 140.
  • the photosensitive device 300 may be disposed on the surface of the base substrate 110 facing away from the light emitting element 130 as shown in FIGS. 4A and 4B, or may be disposed on the base substrate 110 and the pixel control circuit device as shown in FIGS. 4C and 4D. Between 120, there is no limit here.
  • the display panel 100 When the liquid crystal display panel is used as the display panel, as shown in FIG. 5A and FIG. 5B, the display panel 100 includes an array substrate 101 and a counter substrate 102, and a liquid crystal layer 103 disposed between the array substrate 101 and the opposite substrate 102. At this time, as shown in FIG. 5B, the first light collimating member 410 is disposed between the protective cover 200 and the opposite substrate 102. Also, the photosensitive device 300 may be disposed on the surface of the array substrate 101 facing the liquid crystal layer 103 as shown in FIGS. 5A and 5B.
  • the first light collimating member 410 may be a light shielding layer having the light shielding region B only in the non-light emitting region where the photosensitive device 300 is disposed.
  • the light shielding layer may be made of a metal
  • the light shielding layer in the above display device provided by the embodiment of the present disclosure may be a metal layer.
  • the number of layers of the metal layer may be one layer or two layers, which is not limited herein.
  • the metal layer in the display device provided by the embodiment of the present disclosure may also be multiplexed as a touch detection electrode, that is, the metal layer may constitute a plurality of touch detection electrodes, and each touch detection electrode may be a metal.
  • the grid-like structure, and specifically, the touch detection can be implemented by using a capacitive method, which is not limited herein.
  • the thickness thereof is affected by factors such as fabrication process and etching, and the thickness of the metal layer produced is generally in the order of nm, and cannot be achieved in the ⁇ m level.
  • the filtering effect on the stray stray light is not very large, and a large angle of stray light enters the display panel, and after passing through the second light collimating member 420, reaches the photosensitive device 300, and the photosensitive device 300 receives it. The light will still use the mixed light of the adjacent valleys, resulting in a lower recognition rate of the lines.
  • the first light collimating member 410 having a thickness of ⁇ m can be realized by using an electrochromic material.
  • the first light collimating member 410 may include: a first transparent electrode layer 411, an electrochromic layer 412, and a second transparent electrode layer 413 which are sequentially stacked; wherein the first transparent electrode layer The 411 and/or second transparent electrode layer 413 has a hollowed-out region above the photosensitive device 300, that is, an electrodeless pattern, and has an electrode pattern at least in a non-light-emitting region in which the photosensitive device 300 is disposed.
  • the electrochromic layer 412 has a black state between the first transparent electrode layer 411 and the second transparent electrode layer 413, and a transparent state in other regions, that is, the electrochromic layer 412 is not applied with voltage. In the transparent state, the light-shielding region B is formed when the voltage is applied.
  • the first transparent electrode layer 411 and the second transparent electrode layer 413 are not applied with voltage, and the electrochromic layer 412 is in a transparent state to achieve normal display; when the finger is placed on the display panel, In the fingerprint recognition state, the first transparent electrode layer 411 and the second transparent electrode layer 413 are loaded with corresponding potentials, and the electrochromic layer 412 is black at the position opposite to the first transparent electrode layer 411 and the second transparent electrode layer 413.
  • Light transmissive area B Since the first light collimating member 410 can reach the ⁇ m level, stray light can be well restricted from entering the photosensitive device 300, and a high-precision fingerprint recognition function is realized.
  • the electrochromic layer 412 and the first transparent electrode layer 411 may be displayed on the display panel 100.
  • the entire layer is disposed, that is, the patterning is not required;
  • the second transparent electrode layer 413 may have an electrode pattern only in the non-light emitting region where the photosensitive device 300 is disposed and has a hollow region above the photosensitive device 300, that is, only the second transparent electrode layer 413 is required
  • the shape of the hollowed out area may be a circular hole shape or a square hole shape, and may be other shapes, which is not limited herein.
  • the first light collimating member 410 having a thickness of ⁇ m may be realized by using a liquid crystal material.
  • the display panel is a liquid crystal display panel.
  • the first light collimating member 410 may include a first substrate 414 and a second substrate 415 disposed on the first substrate 414 and the second substrate 415 .
  • the area, and the non-light-emitting area in which the photosensitive device 300 is disposed, is a light-shielding area.
  • the first substrate 414 may be the same substrate as the protective cover 200, and the second substrate 415 may be the same substrate as the opposite substrate, which is not limited herein.
  • the electrode structure does not work, and the normal display is realized;
  • the electrode structure is used to control the area of the liquid crystal layer 416 above the photosensitive device 300 as the light-transmitting area A, and the non-light-emitting area in which the photosensitive device 300 is disposed is the light-shielding area B. Since the first light collimating member 410 can reach the ⁇ m level, stray light can be well restricted from entering the photosensitive device 300, and a high-precision fingerprint recognition function is realized.
  • Embodiment 2 The arrangement of the second light collimating member 420.
  • the second light collimating member 420 may include: in the pixel control circuit device 120, when the display panel is an electroluminescent display panel.
  • FIG. 4A and 4B a case where one light shielding member is disposed in the same layer as the source/drain film layer 122 is shown, and in FIG. 4C, two light shielding members are respectively shown in the same manner as the anode layer 131 and the source/drain film layer 122.
  • FIG. 4D the case where the three light shielding members are respectively disposed in the same layer as the anode layer 131, the source/drain film layer 122, and the gate film layer 121 is shown in FIG. 4D.
  • the second light collimating member 420 includes a plurality of light shielding members, between the adjacent two layers of the light shielding members
  • the insulating layer has a via corresponding to the light-transmitting region in the light-shielding member, and the material of the light-shielding member located in the upper layer covers the sidewall of the via.
  • the insulating layer between the anode layer 131 and the source/drain film layer 122 in FIG. 4C has via holes in the light transmitting region, and the material of the light shielding member disposed in the same layer as the anode layer 131 covers the sidewalls of the via holes.
  • the insulating layer between the gate film layer 121 and the source/drain film layer 122 in FIG. 4D has a via hole in the light transmitting region, and the material of the light shielding member disposed in the same layer as the source/drain film layer 122 covers the side of the via hole. wall.
  • the second light collimating member 420 may be disposed on the side of the opposite substrate 102 facing the array substrate 101 or
  • the black matrix is disposed on one side of the array substrate 101 facing the opposite substrate 102, and the black matrix has a light transmitting region above the photosensitive device 300.
  • Embodiment 3 The photosensitive device 300 is disposed in a non-display area of the display panel 100.
  • the photosensitive device 300 may be disposed in the non-display area of the display panel.
  • the first light collimating member 410 may be disposed on the side of the protective cover 200 facing the opposite substrate 102.
  • the black border of the surface has a light-transmitting area above the photosensitive device 300;
  • the second light collimating member 420 may be a light-shielding member disposed in the same layer as the black matrix disposed between the array substrate 101 and the opposite substrate 102.
  • the optical member has a light transmitting region above the photosensitive device 300.
  • the display device provided by the embodiment of the present disclosure may specifically be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • the display device provided by the embodiment of the present disclosure includes a display panel having a plurality of pixel units, a protective cover disposed on the light emitting surface of the display panel, and a plurality of strips for pattern recognition disposed on a side of the pixel unit facing away from the light emitting surface.
  • the photosensitive device adds a light collimating member disposed between the protective cover and the plurality of photosensitive devices, the light collimating member has a light transmitting region above the photosensitive device, and is a light blocking region outside the light transmitting region, and the light shielding region
  • the stray light of some adjacent valleys and the display light emitted by the pixel unit can be filtered to be incident on the photosensitive device, and the light-transmitting region can ensure that the reflected light of the valley is effectively incident on the corresponding photosensitive device, thereby improving the recognition rate of the photosensitive device for the texture, thereby Improve the accuracy and clarity of the texture recognition image.

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Abstract

一种显示装置，包括具有多个像素单元（12）的显示面板（100），设置于显示面板（100）的出光面的保护盖板（200），设置于像素单元（12）背离出光面的一侧的用于纹路识别的多个感光器件（300），增加了设置于保护盖板（200）与多个感光器件（300）之间的光准直构件（400），光准直构件（400）在感光器件（300）上方具有透光区域（A），且在透光区域（A）之外为遮光区域（B），遮光区域（B）可以过滤部分相邻谷脊的杂散光以及像素单元（12）发出的显示发光入射至感光器件（300），而透光区域（A）可以保证谷脊反射光有效入射至对应的感光器件（300）。

Description

显示装置
交叉引用
本申请要求于2017年2月7日提交的申请号为201710067696.3、名称为“一种显示装置”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
本公开涉及显示技术领域，尤其涉及一种显示装置。
背景技术
目前，诸如手机等显示装置安装的实现纹路识别功能的器件均在主(home)键或显示装置背面等非显示区域，而未来显示装置的发展方向为超薄、高色域、广视角且集成各种传感功能。当实现纹路识别的光学传感器即感光器件(Sensor)集成在显示面板内部时，传感器与手指接触面之间的距离会拉大，引起手指反射光到达传感器的距离变大，手指反射的光线在达到传感器之前会发生散射，如图1所示，使得单个光学传感器接收到多个谷脊的指纹信息，导致获取到的光学指纹图案模糊，降低了纹路识别的精度。
因此，如何保证手指谷脊反射光有效的反馈到对应的传感器，避免传感器接收到显示发光或其他谷脊反射光，提高纹路识别图像的精度和清晰度，是本领域急需解决的问题。
发明内容
本公开实施例提供了一种显示装置，包括：具有多个像素单元的显示面板，设置于所述显示面板的出光面的保护盖板，设置于所述像素单元背离所述出光面的一侧的用于纹路识别的多个感光器件，以及设置于所述保护盖板与所述多个感光器件之间的光准直构件；其中，
所述感光器件与所述像素单元在所述显示面板上的正投影互不重叠；
所述光准直构件在所述感光器件上方具有透光区域，且在所述透光区域之外为遮光区域。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述光准直构件包括：设置于所述显示面板与所述保护盖板之间的第一光准直构件，和/或设置于所述显示面板内部的第二光准直构件，所述第一光准直构件和所述第二光准直构件 彼此对应且具有的所述透光区域在所述显示面板上的正投影重叠。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述感光器件设置于所述显示面板显示区的非发光区域；所述第一光准直构件和所述第二光准直构件仅在设置有所述感光器件的所述非发光区域具有所述遮光区域。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述第一光准直构件为仅在设置有所述感光器件的所述非发光区域具有所述遮光区域的遮光层。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述遮光层为金属层。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述金属层构成多个触控检测电极。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述第一光准直构件包括：依次层叠设置的第一透明电极层，电致变色层和第二透明电极层；其中，
所述第一透明电极层和/或所述第二透明电极层在所述感光器件上方具有镂空区域，且至少在设置有所述感光器件的所述非发光区域具有电极图案；
所述电致变色层在所述第一透明电极层和所述第二透明电极层之间存在设定电压差的区域为黑态，在其他区域为透明态。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述电致变色层和所述第一透明电极层在所述显示面板显示区整层设置，所述第二透明电极层仅在设置有所述感光器件的所述非发光区域具有电极图案且在所述感光器件上方具有所述镂空区域。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述第一光准直构件包括：第一基板和第二基板，设置于所述第一基板和所述第二基板之间的液晶层，以及所述第一基板与所述第二基板之间的电极结构；其中，
所述电极结构用于控制所述液晶层在所述感光器件上方的区域为所述透光区域，且在设置有所述感光器件的所述非发光区域为所述遮光区域。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述显示面板包括：衬底基板，设置于所述衬底基板之上的像素控制电路器件，设置于所述像素控制电路器件之上的多个发光元件，以及覆盖所述发光元件的封装薄膜；所述感光器件设置于所述衬底基板背离所述发光元件一侧的表面，或设置于所述衬底基板与所述像素控制电路器件之间。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述第二光准直构件包括：与所述像素控制电路器件中的栅极膜层和源漏极膜层，以及所述发光元件中的阳极层之一或组合同层设置的遮光部件，所述遮光部件在设置有所述感光器件的所述非发光区域具有所述遮光区域，且在所述感光器件上方具有所述透光区域。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，第二光准直构件包括多层所述遮光部件时，在相邻的两层所述遮光部件之间的绝缘层具有与所述遮光部件中的所述透光区域对应的过孔，位于上层的所述遮光部件的材料覆盖所述过孔的侧壁。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述显示面板包括：阵列基板和对向基板，以及设置于所述阵列基板和所述对向基板之间的液晶层；所述感光器件设置于所述阵列基板面向所述液晶层的表面。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述第二光准直构件为设置于所述对向基板面向所述阵列基板的一侧或设置于所述阵列基板面向所述对向基板的一侧的黑矩阵，所述黑矩阵在所述感光器件上方具有所述透光区域。
在一种可能的实现方式中，在本公开实施例提供的上述显示装置中，所述显示面板包括：阵列基板和对向基板，以及设置于所述阵列基板和所述对向基板之间的液晶层；
所述感光器件设置于所述阵列基板面向所述液晶层的非显示区域；
所述第一光准直构件为设置于所述保护盖板面向所述对向基板一侧表面的黑色边框，所述黑色边框在所述感光器件上方具有所述透光区域；
所述第二光准直构件为与设置于所述阵列基板与所述对向基板之间的黑矩阵同层设置的遮光部件，所述遮光部件在所述感光器件上方具有所述透光区域。
附图说明
图1为现有技术中的显示装置的结构示意图；
图2为本公开实施例提供的显示装置的结构示意图；
图3A和图3B分别为本公开实施例提供的显示装置中的光准直构件的原理示意图；
图4A至图4D分别为本公开实施例提供的显示装置为电致发光显示面板时的结构示意图；
图5A和图5B分别为本公开实施例提供的显示装置为液晶显示面板时的结构示意图。
具体实施方式
下面结合附图，对本公开实施例提供的显示装置的具体实施方式进行详细地说明。
本公开实施例提供了一种显示装置，如图2所示，包括：具有多个像素单元12 的显示面板100，设置于显示面板100的出光面的保护盖板200，设置于像素单元12背离出光面的一侧的用于纹路识别的多个感光器件300，以及设置于保护盖板200与多个感光器件300之间的光准直构件400；其中，
感光器件300与像素单元12在显示面板100上的正投影互不重叠；
光准直构件400在感光器件300上方具有透光区域A，且在透光区域A之外为遮光区域B。
具体地，由于在本公开实施例提供的上述显示装置中，增加了设置于保护盖板200与多个感光器件300之间的光准直构件400，该光准直构件400在感光器件300上方具有透光区域A，且在透光区域A之外为遮光区域B，遮光区域B可以过滤部分相邻谷脊(即，脊10与谷11)的杂散光以及像素单元发出的显示发光入射至感光器件300，而透光区域A可以保证谷脊反射光有效入射至对应的感光器件300，提高感光器件对于纹路的识别率，从而提高纹路识别图像的精度和清晰度。
在具体实施时，为了保证较小角度的谷脊反射光入射至对应的感光器件300中，需要保证光准直构件400具有一定的厚度，当光准直构件400的厚度越厚，可以使光线的观测角度越小，进而可以达到类似于准直光的效果，通过测量可知，如图3A所示，在光准直构件400的透光区域A的孔径为5μm时，光准直构件400的厚度需要在100μm以上，才能够达到很好的准直效果。一方面，目前的制作工艺无法实现厚度如此之高的膜层制作，另一方面，若在显示面板内部增加如此之厚的膜层会不利于显示面板的轻薄化设计。基于此，在本公开实施例提供的上述显示装置中，如图3B所示，采用层叠设置且具有设定间距的多个膜层(例如图3B中示出的上下两个膜层321和322)替代一个厚度需求较高的膜层(例如图3A中示出的膜层311)作为光准直构件400，达到同等的光准直效果。
基于此，具体地，在本公开实施例提供的上述显示装置中，如图2所示，光准直构件400可以具体包括：设置于显示面板100与保护盖板200之间的第一光准直构件410，和设置于显示面板100内部的第二光准直构件420，第一光准直构件410和第二光准直构件420彼此对应且具有的透光区域A在显示面板100上的正投影重叠，即两者的透光区域A相对应。可选择地，在一个实施例中，两者的透光区域A在显示面板100上的正投影完全重叠，即两者的透光区域A完全一致。或者，光准直构件400可以仅具有设置于显示面板100与保护盖板200之间的第一光准直构件410，或设置于显示面板100内部的第二光准直构件420，在此不做限定。另外，应当注意的是，虽然附图中将第一光准直构件410示出为嵌入到保护盖板200的表面中，然而本发明不限于此，光准直构件410也可以从保护盖板200的表面突出，或者可以设置在保护盖板200与显示面板100之间的其它位置。
下面均是以光准直构件400同时包括第一光准直构件410和第二光准直构件420为例进行说明。
在具体实施时，为了提高显示装置的便携性和降低成本，可以将感光器件300集成于显示面板100的显示区，此时，在本公开实施例提供的上述显示装置中，感光器件300一般设置于显示面板100显示区的非发光区域，即如图2所示的像素单元12之间的间隙处。此时，为了不影响显示功能，第一光准直构件410和第二光准直构件420仅在设置有感光器件300的非发光区域具有遮光区域B。第一光准直构件410的遮光区域B可以过滤部分谷脊的杂散光，第二光准直构件420的遮光区域B不仅可以过滤部分上方谷脊的杂散光，还可以遮挡大部分显示发光入射至感光器件300。
在具体实施时，在感光器件300设置于显示面板100显示区的非发光区域时，在本公开实施例提供的上述显示装置中的第一光准直构件410和第二光准直构件420的实现结构有多种方式，下面通过具体实施例分别进行详细介绍。
实施例一：第一光准直构件410的设置方式。
在具体实施时，在本公开实施例提供的上述显示装置中，显示面板100具体可以采用如图4A至图4D所示的电致发光显示面板，也可以采用如图5A至图5B所示的液晶显示面板。
在显示面板采用电致发光显示面板时，如图4A至图4D所示，显示面板100具体包括：衬底基板110，设置于衬底基板110之上的像素控制电路器件120，设置于像素控制电路器件120之上的多个发光元件130，以及覆盖发光元件130的封装薄膜140；其中，像素控制电路器件120由多个薄膜晶体管组成，图中仅是示意性的示出了一个薄膜晶体管。此时，第一光准直构件410设置于保护盖板200与封装薄膜140之间。并且，感光器件300可以如图4A和图4B所示设置于衬底基板110背离发光元件130一侧的表面，也可以如图4C和图4D所示设置于衬底基板110与像素控制电路器件120之间，在此不做限定。
在显示面板采用液晶显示面板时，如图5A和图5B所示，显示面板100包括：阵列基板101和对向基板102，以及设置于阵列基板101和对向基板102之间的液晶层103。此时，如图5B所示，第一光准直构件410设置于保护盖板200与对向基板102之间。并且，感光器件300可以如图5A和图5B所示设置于阵列基板101面向液晶层103的表面。
具体地，以显示面板采用电致发光显示面板为例，如图4A所示，第一光准直构件410可以为仅在设置有感光器件300的非发光区域具有遮光区域B的遮光层。
此时，具体可以采用金属制作遮光层，即在本公开实施例提供的上述显示装置中的遮光层可以为金属层。金属层的层数可以为一层也可以为两层，在此不做限定。
在具体实施时，在本公开实施例提供的上述显示装置中的金属层还可以复用作为触控检测电极，即金属层可以构成多个触控检测电极，每个触控检测电极可以为金属网格状结构，并且，具体可以采用电容式实现触控检测，在此不做限定。
此时，由于目前的金属层一般采用溅射的方式制作，其厚度受到制作工艺以及刻蚀等因素的影响，制作出的金属层厚度一般在nm级别，不能够做到μm级别。此时，对于谷脊杂散光的滤光作用不是很大，会有较大角度的杂散光进入到显示面板，在经过第二光准直构件420之后到达感光器件300，感光器件300接受到的光依然会用相邻谷脊的混合光线，从而导致纹路的识别率较低。
基于此，在本公开实施例提供的上述显示装置中，可以利用电致变色材料实现厚度在μm级别的第一光准直构件410。具体地，如图4B所示，第一光准直构件410可以包括：依次层叠设置的第一透明电极层411，电致变色层412和第二透明电极层413；其中，第一透明电极层411和/或第二透明电极层413在感光器件300上方具有镂空区域，即无电极图案，且至少在设置有感光器件300的非发光区域具有电极图案。电致变色层412在第一透明电极层411和第二透明电极层413之间存在设定电压差的区域为黑态，在其他区域为透明态，即电致变色层412在未加电压时为透明态，在加载电压时形成遮光区域B。
这样，可以当显示面板为显示状态时，第一透明电极层411和第二透明电极层413未加电压，电致变色层412为透明态，实现正常的显示；当手指放到显示面板上为指纹识别状态时，第一透明电极层411和第二透明电极层413加载相应的电位，电致变色层412在第一透明电极层411和第二透明电极层413正对位置实现黑态，形成透光区域B。由于第一光准直构件410可以达到μm级别，可以很好地限制杂散光进入到感光器件300中，实现了高精度的指纹识别功能。
在具体实施时，为了简化制作工艺的复杂程度，在本公开实施例提供的上述显示装置中，如图4B所示，电致变色层412和第一透明电极层411在显示面板100显示区可以整层设置，即不需要进行构图；第二透明电极层413可以仅在设置有感光器件300的非发光区域具有电极图案且在感光器件300上方具有镂空区域，即仅第二透明电极层413需要进行构图，该镂空区域可以为圆孔状，也可以为方孔状，还可以为其他形状，在此不做限定。
或者，在本公开实施例提供的上述显示装置中，也可以利用液晶材料实现厚度在μm级别的第一光准直构件410。具体地，以显示面板采用液晶显示面板为例，如图5A所示，第一光准直构件410可以包括：第一基板414和第二基板415，设置于第一基板414和第二基板415之间的液晶层416，以及第一基板414与第二基板415之间的电极结构(图中未示出)；其中，电极结构用于控制液晶层416在感光器件300上方的区域为透光区域，且在设置有感光器件300的非发光区域为遮光区域。电极结构的具体实现方式有多种，在此不做限定。
进一步地，为减薄显示装置的厚度，在具体实施时，第一基板414可以与保护盖板200为同一基板，第二基板415可以与对向基板为同一基板，在此不做限定。
这样，可以当显示面板为显示状态时，电极结构不工作，实现正常的显示；当手 指放到显示面板上为指纹识别状态时，电极结构用于控制液晶层416在感光器件300上方的区域为透光区域A，且在设置有感光器件300的非发光区域为遮光区域B。由于第一光准直构件410可以达到μm级别，可以很好的限制杂散光进入到感光器件300中，实现了高精度的指纹识别功能。
实施例二：第二光准直构件420的设置方式。
在显示面板采用电致发光显示面板时，在本公开实施例提供的上述显示装置中，如图4A至图4D所示，第二光准直构件420可以包括：与像素控制电路器件120中的栅极膜层121和源漏极膜层122，以及发光元件130中的阳极层131之一或组合同层设置的遮光部件，遮光部件在设置有感光器件300的非发光区域具有遮光区域，且在感光器件300上方具有透光区域。
在图4A和图4B中示出了一个遮光部件与源漏极膜层122同层设置的情况，在图4C中示出了两个遮光部件分别与阳极层131和源漏极膜层122同层设置的情况，图4D中示出了三个遮光部件分别与阳极层131、源漏极膜层122和栅极膜层121同层设置的情况。
进一步地，在本公开实施例提供的上述显示装置中，如图4C和图4D所示，当第二光准直构件420包括多层遮光部件时，在相邻的两层遮光部件之间的绝缘层具有与遮光部件中的透光区域对应的过孔，位于上层的遮光部件的材料覆盖过孔的侧壁。在图4C中位于阳极层131和源漏极膜层122之间的绝缘层在透光区域具有过孔，与阳极层131同层设置的遮光部件的材料覆盖过孔的侧壁。在图4D中位于栅极膜层121和源漏极膜层122之间的绝缘层在透光区域具有过孔，与源漏极膜层122同层设置的遮光部件的材料覆盖过孔的侧壁。
在显示面板采用液晶显示面板时，在本公开实施例提供的上述显示装置中，如图5A所示，第二光准直构件420可以为设置于对向基板102面向阵列基板101的一侧或设置于阵列基板101面向对向基板102的一侧的黑矩阵，黑矩阵在感光器件300上方具有透光区域。
实施例三：在感光器件300设置于显示面板100的非显示区域。
进一步地，由于在将感光器件300设置于显示面板100显示区的非发光区域时，光准直构件400在像素单元12的开口区域必然不能设置遮光区域B，因此不可避免的会有杂散光入射至感光器件300。在对纹路识别的清晰度要求较高的情况下，在具体实施时，在本公开实施例提供的上述显示装置中，也可以将感光器件设置于显示面板的非显示区域。
以显示面板采用液晶显示面板为例，在本公开实施例提供的上述显示装置中，如图5B所示，第一光准直构件410可以为设置于保护盖板200面向对向基板102一侧表面的黑色边框，黑色边框在感光器件300上方具有透光区域；第二光准直构件420可以为与设置于阵列基板101与对向基板102之间的黑矩阵同层设置的遮光部件，遮 光部件在感光器件300上方具有透光区域。
本公开实施例提供的显示装置具体可以为：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。
本公开实施例提供的上述显示装置，包括具有多个像素单元的显示面板，设置于显示面板的出光面的保护盖板，设置于像素单元背离出光面的一侧的用于纹路识别的多个感光器件，增加了设置于保护盖板与多个感光器件之间的光准直构件，该光准直构件在感光器件上方具有透光区域，且在透光区域之外为遮光区域，遮光区域可以过滤部分相邻谷脊的杂散光以及像素单元发出的显示发光入射至感光器件，而透光区域可以保证谷脊反射光有效入射至对应的感光器件，提高感光器件对于纹路的识别率，从而提高纹路识别图像的精度和清晰度。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (16)

  1. 一种显示装置，包括：
    具有多个像素单元的显示面板；
    设置于所述显示面板的出光面的保护盖板；
    设置于所述像素单元背离所述出光面的一侧的用于纹路识别的至少一个感光器件；以及
    设置于所述保护盖板与所述多个感光器件之间的光准直构件，
    其中，所述感光器件与所述像素单元在所述显示面板上的正投影互不重叠，
    所述光准直构件在所述感光器件上方具有透光区域，且在所述透光区域之外为遮光区域。
  2. 如权利要求1所述的显示装置，其特征在于，所述光准直构件包括设置于所述显示面板与所述保护盖板之间的第一光准直构件。
  3. 如权利要求2所述的显示装置，其特征在于，所述光准直构件还包括设置于所述显示面板内部的第二光准直构件，所述第一光准直构件和所述第二光准直构件彼此对应且具有的所述透光区域在所述显示面板上的正投影重叠。
  4. 如权利要求3所述的显示装置，其特征在于，所述感光器件设置于所述显示面板显示区的非发光区域；所述第一光准直构件和所述第二光准直构件仅在设置有所述感光器件的所述非发光区域具有所述遮光区域。
  5. 如权利要求4所述的显示装置，其特征在于，所述第一光准直构件为仅在设置有所述感光器件的所述非发光区域具有所述遮光区域的遮光层。
  6. 如权利要求5所述的显示装置，其特征在于，所述遮光层为金属层。
  7. 如权利要求6所述的显示装置，其特征在于，所述金属层包括多个触控检测电极。
  8. 如权利要求4所述的显示装置，其特征在于，所述第一光准直构件包括：依次层叠设置的第一透明电极层，电致变色层和第二透明电极层；其中，
    所述第一透明电极层和所述第二透明电极层中的至少一个在所述感光器件上方具有镂空区域，且至少在设置有所述感光器件的所述非发光区域具有电极图案；
    所述电致变色层在所述第一透明电极层和所述第二透明电极层之间存在设定电压差的区域为黑态，在其他区域为透明态。
  9. 如权利要求8所述的显示装置，其特征在于，所述电致变色层和所述第一透明电极层在所述显示面板显示区整层设置，所述第二透明电极层仅在设置有所述感光器件的所述非发光区域具有电极图案且在所述感光器件上方具有所述镂空区域。
  10. 如权利要求4所述的显示装置，其特征在于，所述第一光准直构件包括：第一基板和第二基板、设置于所述第一基板和所述第二基板之间的液晶层、以及所述第一基板与所述第二基板之间的电极结构；其中，
    所述电极结构用于控制所述液晶层在所述感光器件上方的区域为所述透光区域，且在 设置有所述感光器件的所述非发光区域为所述遮光区域。
  11. 如权利要求4-10任一项所述的显示装置，其特征在于，所述显示面板包括：衬底基板、设置于所述衬底基板之上的像素控制电路器件、设置于所述像素控制电路器件之上的多个发光元件、以及覆盖所述发光元件的封装薄膜；所述感光器件设置于所述衬底基板背离所述发光元件一侧的表面上，或设置于所述衬底基板与所述像素控制电路器件之间。
  12. 如权利要求11所述的显示装置，其特征在于，所述第二光准直构件包括：与所述像素控制电路器件中的栅极膜层和源漏极膜层，以及所述发光元件中的阳极层之一或组合同层设置的遮光部件，所述遮光部件在设置有所述感光器件的所述非发光区域具有所述遮光区域，且在所述感光器件上方具有所述透光区域。
  13. 如权利要求12所述的显示装置，其特征在于，第二光准直构件包括多层所述遮光部件时，在相邻的两层所述遮光部件之间的绝缘层具有与所述遮光部件中的所述透光区域对应的过孔，位于上层的所述遮光部件的材料覆盖所述过孔的侧壁。
  14. 如权利要求4-10任一项所述的显示装置，其特征在于，所述显示面板包括：阵列基板和对向基板、以及设置于所述阵列基板和所述对向基板之间的液晶层；所述感光器件设置于所述阵列基板面向所述液晶层的表面上。
  15. 如权利要求14所述的显示装置，其特征在于，所述第二光准直构件为设置于所述对向基板面向所述阵列基板的一侧或设置于所述阵列基板面向所述对向基板的一侧的黑矩阵，所述黑矩阵在所述感光器件上方具有所述透光区域。
  16. 如权利要求2或3所述的显示装置，其特征在于，所述显示面板包括：阵列基板和对向基板、以及设置于所述阵列基板和所述对向基板之间的液晶层；
    所述感光器件设置于所述阵列基板面向所述液晶层的非显示区域；
    所述第一光准直构件为设置于所述保护盖板面向所述对向基板一侧表面的黑色边框，所述黑色边框在所述感光器件上方具有所述透光区域；
    所述第二光准直构件为与设置于所述阵列基板与所述对向基板之间的黑矩阵同层设置的遮光部件，所述遮光部件在所述感光器件上方具有所述透光区域。
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