WO2018188427A1 - 显示装置及其控制方法 - Google Patents

显示装置及其控制方法 Download PDF

Info

Publication number
WO2018188427A1
WO2018188427A1 PCT/CN2018/077891 CN2018077891W WO2018188427A1 WO 2018188427 A1 WO2018188427 A1 WO 2018188427A1 CN 2018077891 W CN2018077891 W CN 2018077891W WO 2018188427 A1 WO2018188427 A1 WO 2018188427A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
layer
display device
photosensitive sensing
liquid crystal
Prior art date
Application number
PCT/CN2018/077891
Other languages
English (en)
French (fr)
Inventor
谭纪风
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 US16/086,774 priority Critical patent/US11106888B2/en
Priority to EP18784706.6A priority patent/EP3611560B1/en
Priority to JP2019544890A priority patent/JP7234121B2/ja
Publication of WO2018188427A1 publication Critical patent/WO2018188427A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • 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
    • 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
    • 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
    • G02F1/13338—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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • 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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • 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
    • H01L27/14601—Structural or functional details thereof
    • H01L27/14603—Special geometry or disposition of pixel-elements, address-lines or gate-electrodes
    • H01L27/14605—Structural or functional details relating to the position of the pixel elements, e.g. smaller pixel elements in the center of the imager compared to pixel elements at the periphery
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • 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
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/294—Variable focal length devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • 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
    • H01L27/14601—Structural or functional details thereof
    • H01L27/1462—Coatings
    • H01L27/14623—Optical shielding

Definitions

  • the present disclosure relates to a display device and a control method thereof.
  • the fingerprint recognition technology mainly includes optical, capacitive, and ultrasonic, wherein the optical fingerprint recognition technology has a wider recognition range and lower cost.
  • An embodiment of the present disclosure provides a display device including a display panel including a plurality of photosensitive sensing units, and the display device further includes: a display side of the display panel and a distance from the display panel a light transmission hole forming layer, a liquid crystal lens layer, a light guiding layer, and a light source disposed on a side surface of the light guiding layer, which are sequentially disposed in the direction.
  • the light-transmitting hole forming layer is switchable between a light transmitting state and a small hole state, wherein the small hole state is that the light-transmitting hole forming layer is used to form a light transmission directly opposite to each photosensitive sensing unit a state of the aperture;
  • the liquid crystal lens layer is switchable between a non-lens state and a lens state, the lens state being a state in which the liquid crystal lens layer is used to form a convex lens that is opposite to each of the photosensitive sensing units.
  • a center of each of the photosensitive sensing units, a center of the light-transmissive hole directly opposite the photosensitive sensing unit, and a face of the photosensitive sensing unit are on the same vertical line.
  • the light emitted by the light source enters the light guiding layer and is incident on the upper bottom surface and the lower bottom surface of the light guiding layer; and the upper surface and the lower bottom surface of the light guiding layer are incident on the light guiding layer.
  • the number of incident angles of the light is greater than or equal to the critical angle of the light guiding layer.
  • the light-transmitting hole forming layer includes a first liquid crystal layer sealed in the first cavity, and a first pixel electrode and a first common electrode for driving the first liquid crystal layer
  • the first pixel electrode and the first common electrode are disposed at least in a region other than the light transmission hole.
  • the liquid crystal lens layer includes a second liquid crystal layer sealed in the second cavity, and a second pixel electrode and a second common electrode for driving the second liquid crystal layer;
  • the second pixel electrode and the second common electrode are used to drive the second liquid crystal layer to switch between a non-lens state and a lens state.
  • the display panel includes a first substrate and a second substrate disposed on the cartridge, wherein the second substrate is disposed adjacent to the first substrate opposite to the light-transmitting aperture forming layer, A plurality of photosensitive sensing units are disposed on the second substrate.
  • the plurality of photosensitive sensing units are evenly distributed in an array, and a total area occupied by the plurality of photosensitive sensing units in the display panel is a sensing area, the display panel The area other than the sensing area in the display area is the light exit area.
  • the area ratio of the sensing area to the light exiting area may be greater than or equal to 1:4 and less than or equal to 1:1.
  • an area ratio of a region occupied by each of the photosensitive sensing units in the display panel to a pixel region or a sub-pixel region of the display panel may be greater than or equal to 1:4 and less than Equal to 1:1.
  • each of the photosensitive sensing units at the center of each of the photosensitive sensing units, at the center of the light-transmissive aperture opposite the photosensitive sensing unit, opposite the photosensitive sensing unit
  • the adjacent convex lenses are adjacently disposed in a direction parallel to the display panel.
  • the aperture of each of the convex lenses is D0, and the vertical distance of the center of the convex lens to the center of the light-transmitting hole facing thereto is H0, and the center of the light-transmitting hole is
  • the photosensitive sensor unit has a width ranging from greater than or equal to a vertical distance H1 of the photosensitive sensing unit directly opposite thereto And
  • the photosensitive sensing unit further includes a light shielding layer disposed on a side of each of the photosensitive sensing units away from the light-transmitting aperture forming layer.
  • the display device includes a control module, and when the control module receives the fingerprint identification signal, controls the formation of the light transmission hole of the fingerprint recognition area Switching the layer to the aperture state, switching the liquid crystal lens layer to the lens state, and performing fingerprint recognition on the display device based on the light guiding layer, the light source disposed on the side of the light guiding layer, and the plurality of photosensitive sensing units; After receiving the display signal, the control module controls the light transmission hole forming layer to switch to a light transmitting state, and the liquid crystal lens layer switches to a non-lens state, so that the display device performs display.
  • FIG. 1 is a schematic structural diagram of a display device provided by a related art
  • FIG. 2 is a schematic structural diagram of a display device according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of a display device for display when an embodiment of the present disclosure is provided;
  • FIG. 4 is a schematic diagram of a display device for fingerprint recognition according to an embodiment of the present disclosure.
  • FIG. 5 is a light path diagram of light rays in a light guiding layer according to an embodiment of the present disclosure
  • FIG. 6(a) is a schematic view 1 of a light transmission hole provided by an embodiment of the present disclosure.
  • 6(b) is a second schematic view of a light transmission hole provided by an embodiment of the present disclosure.
  • Figure 7 (a) is a schematic view 1 of a convex lens provided by an embodiment of the present disclosure
  • Figure 7 (b) is a schematic view 2 of a convex lens provided by an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram 1 of a display panel according to an embodiment of the present disclosure.
  • FIG. 9 is a second schematic structural diagram of a display panel according to an embodiment of the present disclosure.
  • FIG. 10 is a first schematic diagram of a manner of setting a plurality of photosensitive sensing units according to an embodiment of the present disclosure
  • FIG. 11 is a second schematic diagram of a manner of setting a plurality of photosensitive sensing units according to an embodiment of the present disclosure
  • FIG. 12( a ) is a third schematic diagram of a manner of setting a plurality of photosensitive sensing units according to an embodiment of the present disclosure
  • FIG. 12(b) is a fourth schematic diagram showing the arrangement of a plurality of photosensitive sensing units according to an embodiment of the present disclosure.
  • a plurality of photosensors 50 are disposed in the associated optical fingerprint reader. After the light emitted by the backlight 60 is irradiated to the finger, the light beam is diffused by the finger, and a part of the light beam is absorbed by the photosensor 50.
  • valleys valleys
  • ridges the peaks
  • the light energy of the reflected light differs.
  • the light energy reflected by the light beam passing through the valley is low relative to the light energy reflected by the ridge, and the photosensor 50 can perform fingerprint recognition based on the difference in received light energy.
  • the photosensor 50 receives only a small portion of the light beam diffused by the finger and the beam passes through the valleys and ridges of the finger, the difference in reflected light energy is extremely small, which is disadvantageous for the photosensor 50 to determine the relative positions of the valley and the ridge.
  • the photoelectric sensor 50 it is more disadvantageous for the photoelectric sensor 50 to accurately recognize the fingerprint.
  • Embodiments of the present disclosure provide a display device, as shown in FIGS. 2-4, including a display panel 1 including a plurality of photosensitive sensing units 10.
  • the display device further includes a light transmission hole forming layer 20, a liquid crystal lens layer 30, a light guiding layer 40, and a light source disposed on a side surface of the light guiding layer 40, which are disposed on the display side of the display panel 1 and arranged in a direction away from the display panel 1. 41.
  • the light-transmitting hole forming layer 20 is switchable between a light transmitting state (as shown in FIG. 3) and a small hole state (shown in FIG. 4).
  • the small hole state is a state in which the light transmission hole forming layer 20 forms the light transmission hole 21 facing each photosensitive sensing unit 10.
  • the liquid crystal lens layer 30 is switchable between a non-lens state (as shown in FIG. 3) and a lens state (shown in FIG. 4).
  • the lens state is a state in which the liquid crystal lens layer 30 is used to form the convex lens 31 that is opposite to each photosensitive sensing unit 10.
  • the light guiding layer 40 has a smooth upper bottom surface and a lower bottom surface.
  • each photosensitive sensing unit 10 may include, in addition to the photosensitive sensing unit body, Shading layer.
  • the light shielding layer is disposed on a side of each photosensitive sensing unit body away from the light transmission hole forming layer 20.
  • the photosensitive sensing unit body may include a sensing element, a conversion element, and the like.
  • the photosensitive sensing unit body can include a transmitter, a receiver, a detection circuit, and the like.
  • the display device can be used to identify a flawed object such as a fingerprint or a palm print, which is not limited in the present disclosure.
  • a flawed object such as a fingerprint or a palm print
  • the following texts are described in detail by fingerprint recognition.
  • the photosensitive sensing unit 10 is used to convert an optical signal into an electrical signal, which may be a photosensor, a photosensor, or the like.
  • the structure of the photosensor may be a PIN (positive-intrinsic-negative) structure.
  • the structure of the photosensor may be a PN (Positive-Negative junction) or the like.
  • the present disclosure does not limit the arrangement of the plurality of photosensitive sensing units 10.
  • the setting position of the plurality of photosensitive sensing units 10 can be performed as long as the finger touches the display side of the display device for any position of the fingerprint recognition area, and the area occupied by the plurality of photosensitive sensing units 10 does not affect the display.
  • the normal display of the device is sufficient.
  • Adjacent photosensitive sensing units 10 may be disposed adjacent to each other (i.e., there is no area for light extraction between the two photosensitive sensing units), or may be spaced apart (i.e., the two photosensitive sensing units are spaced apart by the area for light extraction). In one or more embodiments, each two adjacent photosensitive sensing units 10 in the display device are spaced apart. In one or more embodiments, adjacent photosensitive sensing units 10 in the display device may be disposed adjacently or at intervals, and the adjacent photosensitive sensing unit 10 does not affect the normal display of the display device.
  • each photosensitive sensing unit 10 and the center of the light-transmitting hole 21 facing it may be on a vertical line or not on a vertical line, as long as a light-transmissive hole 21 is displayed.
  • the orthographic projection on the panel 1 may overlap with the orthographic projection of the respective photosensitive sensing unit 10 on the display panel 1 (including full overlap and partial overlap).
  • each photosensitive sensing unit 10 and the center of the convex lens 31 facing it may be on a vertical line or not on a vertical line, as long as the orthographic projection of a convex lens 31 on the display panel 1 is
  • the orthographic projections of the respective photosensitive sensing units 10 on the display panel 1 may overlap (including full overlap and partial overlap).
  • the display panel 1 has parallel upper and lower surfaces.
  • the orthographic projection on the display panel 1 refers to projection of the convex lens 31, the light transmission hole 21, and the photosensitive sensing unit 10 onto the upper and lower surfaces of the display panel 1 in a direction perpendicular to the upper and lower surfaces of the display panel 1. .
  • the formation manner of the light-transmitting hole forming layer 20 is not limited as long as the light-transmitting hole forming layer 20 can be switched between the light transmitting state and the small hole state.
  • the light-transmitting hole forming layer 20 employs an electrode driving liquid crystal or an electrophoresis technique. It should be understood by those skilled in the art that the state of the small hole of the light-transmitting hole forming layer 20 is a state in which the light-transmitting hole 21 allowing light to pass therethrough is formed, which means that the area where the light-transmitting hole 21 is located is transparent, and the other areas are shielded from light.
  • the light transmitting state of the light-transmitting hole forming layer 20 is a state in which light is allowed to pass through, that is, a region in which the state of the light-transmitting hole forming layer 20 is variable becomes a light transmitting state.
  • An example of the "state-variable region" is a light-shielding region other than the light-transmitting hole 21 when the light-transmitting hole forming layer 20 is switched to the small-hole state.
  • the lens state of the liquid crystal lens layer 30 is a state in which the convex lens 31 is formed, which means that the region where the convex lens 31 is located causes the light to be gathered, and the other regions are in a light transmitting or light blocking state depending on the deflection of the liquid crystal.
  • the non-lens state of the liquid crystal lens layer 30 should be a state in which light is allowed to pass through, that is, in the non-lens state, all regions in the liquid crystal lens layer 30 become light transmitting.
  • the bottom surface of the light guiding layer 40 on the side close to the display panel 1 is a lower bottom surface
  • the bottom surface away from the display panel 1 side is an upper bottom surface
  • a plurality of surfaces adjacent to the upper bottom surface and the lower bottom surface are the light guiding layer 40.
  • the light source 41 may be disposed on one side of the light guiding layer 40 or may be disposed on a plurality of sides of the light guiding layer 40.
  • the light guiding layer 40 may or may not include dots. If the light guiding layer 40 does not include a halftone dot, the light emitted from the light source 41 enters the light guiding layer 40 from the side of the light guiding layer 40, part of the light is totally reflected in the light guiding layer 40, and part of the light is emitted from the upper bottom surface of the light guiding layer 40. . When the finger touches the display device, the light emitted from the bottom surface of the light guiding layer 40 is incident on the finger, and is diffused by the finger to the plurality of photosensitive sensing units 10, thereby realizing fingerprint recognition.
  • the light emitted from the light source 41 enters the light guiding layer 40 from the side of the light guiding layer 40 and is emitted from the upper bottom surface of the light guiding layer 40.
  • the finger touches the display device the light emitted from the bottom surface of the light guiding layer 40 is incident on the finger, and is diffused by the finger to the plurality of photosensitive sensing units 10, thereby realizing fingerprint recognition.
  • the material of the light guiding layer 40 is not limited, and it may be a resin material such as polymethyl methacrylate (PMMA), a cyclic olefin thermoplastic resin, or polycarbonate (PC).
  • the cyclic olefin thermoplastic resin may be a cyclic olefin polymer (COP).
  • the shape of the orthographic projection of the light-transmitting hole 21 and the convex lens 31 on the lower surface of the light guiding layer 40 is not limited, for example, as shown in FIGS. 6(a) and 6(b), the light-transmitting hole 21 is in the light guiding layer.
  • the orthographic projection of the lower surface of 40 may be rectangular, circular, elliptical (not shown), and the like.
  • the orthographic projection of the convex lens 31 on the lower surface of the light guiding layer 40 may be rectangular, circular (not shown), elliptical (not shown), etc. .
  • the orthographic projection of the convex lens 31 and the light transmission hole 21 on the lower bottom surface of the light guiding layer 40 is circular.
  • the display device may be a liquid crystal display or an OLED (Organic Light-Emitting Diode) display.
  • OLED Organic Light-Emitting Diode
  • the display device When the display device is a liquid crystal display, it includes a display panel 1 and a backlight, and the backlight is supplied to the display device for display.
  • the display panel 1 includes an array substrate, a counter substrate, and a liquid crystal layer disposed therebetween.
  • the array substrate may include a TFT (Thin Film Transistor, abbreviated as a thin film transistor), and a pixel electrode electrically connected to the drain of the TFT.
  • the array substrate may further include a common electrode.
  • the counter substrate may include a black matrix and a color film. Here, the color film may be disposed on the counter substrate or on the array substrate.
  • the common electrode may be disposed on the array substrate or on the counter substrate.
  • the liquid crystal display device may also include polarizers disposed on the side of the display panel 1 that are adjacent to and away from the backlight.
  • the OLED includes an array substrate and a package substrate.
  • the array substrate may include a TFT, an anode electrically connected to the drain of the TFT, a cathode, and an organic material functional layer between the anode and the cathode.
  • An embodiment of the present disclosure provides a display device in which a light-transmitting hole forming layer 20, a liquid crystal lens layer 30, a light guiding layer 40, and a side surface of the light guiding layer 40 are sequentially disposed in a direction away from the display panel 1 on the display side of the display panel 1.
  • the light source 41 is set.
  • the display device is used only for display, the light-transmitting hole forming layer 20 is switched to the light transmitting state, and the liquid crystal lens layer 30 is switched to the non-lens state to cause the display device to display.
  • the light transmission hole forming layer 20 of the fingerprint recognition area can be switched to the small hole state, the liquid crystal lens layer 30 can be switched to the lens state, and the fingerprint recognition area is displayed in the display area of the display panel 1.
  • Other areas than others can still be used for normal display.
  • the light emitted from the light source 41 is incident on the finger from the light guiding layer 40, and the light diffused by the finger first passes through the convex lens 31 of the liquid crystal lens layer 30 to gather the light, thereby increasing the light energy of the valley and the ridge. As the light energy of the valley and ridge increases, the difference in light energy between the two increases.
  • the light passing through the convex lens 31 passes through the light-transmitting hole to form the light-transmitting hole 21 of the layer 20, so that the collected light is incident on the plurality of photosensitive sensing units 10 through the light-transmitting hole 21. Therefore, the interference of light in other regions except the light-transmitting hole 21 can be eliminated, and the present disclosure realizes the fingerprint by increasing the difference of the light energy between the valley and the ridge and eliminating the interference of light other than the light-transmitting hole 21 Make accurate identification.
  • the convex lens 31 is a curved surface, and among all the curved surfaces, the spherical surface is most suitable for mass production, and is easy to process to high precision, and therefore, in one or more embodiments, the convex lens 31 is spherical. lens.
  • the center of each photosensitive sensing unit 10, the center of the light-transmissive aperture 21 facing the photosensitive sensing unit 10, and the photosensitive sensing unit 10 are directly opposite.
  • the centers of the convex lenses 31 are on the same vertical line.
  • the embodiment of the present disclosure is disposed on the same vertical line by the center of the convex lens 31 facing each photosensitive sensing unit 10 and the center of the light transmission hole 21 facing the photosensitive sensing unit 10,
  • the light passing through the light-transmitting aperture 21 can be made to include only the light collected by the convex lens 31, so that the photosensitive sensing unit 10 completely eliminates interference of light other than the collected light.
  • the adjacent photosensitive sensing units 10 are adjacently disposed, in order to prevent the light rays incident on the plane of the photosensitive sensing unit 10 from overlapping, the light passing through the light transmitting holes 21 is entirely incident on the photosensitive sensing unit 10 opposite thereto. .
  • the width of the photosensitive sensing unit 10 can be reduced, thereby avoiding photosensitivity.
  • the width of the sensing unit 10 is too large, affecting the aperture ratio of the display device.
  • the light emitted by the light source 41 enters the light guiding layer 40 and is incident on the upper and lower bottom surfaces of the light guiding layer 40.
  • the number of incident angles of the light rays incident on the upper and lower bottom surfaces of the light guiding layer 40 is greater than or equal to the critical angle of the light guiding layer 40.
  • light rays are incident from the light source 41 into the light guiding layer 40, and are reflected from the light into the air or in the light guiding layer 40.
  • the light guiding layer 40 can be regarded as a light-tight medium, and the air can be regarded as a light-dissipating medium, and the incident angle ⁇ of the light that hits the bottom surface and the lower bottom surface of the light guiding layer 40 is the incident angle of the light in the optically dense medium.
  • the degree of incidence ⁇ of the light rays incident on the upper surface and the lower bottom surface of the light guiding layer 40 is greater than or equal to the critical angle of the light guiding layer 40, the light is totally reflected in the light guiding layer 40.
  • the display device is only used for display, the light seen by the human eye is only the light used by the display device for display; when the display device is used for fingerprint recognition, the finger touches the display device, and the light guiding layer 40 Due to the force, deformation occurs at the finger touch position, thereby destroying the total reflection of light in the light guiding layer 40.
  • FIG. 5 only shows that the light hits the upper bottom surface of the light guiding layer, wherein ⁇
  • the values of ⁇ and ⁇ are greater than or equal to 0° and less than or equal to 90°.
  • the incident angle number ⁇ of the light rays incident on the upper surface and the lower bottom surface of the light guiding layer 40 can be achieved, which is greater than or equal to the critical angle of the light guiding layer 40.
  • the incident angle number ⁇ of the light incident on the upper surface and the lower bottom surface of the light guiding layer 40 can be realized by changing the incident angle number ⁇ of the light emitted from the light source 41 to the light guiding layer 40, which is greater than or equal to the light guiding layer 40.
  • the critical angle number is the critical angle number.
  • the incident angle number ⁇ of the light rays incident on the upper and lower bottom surfaces of the light guiding layer 40 may be greater than or equal to 42.2°, that is, ⁇ ⁇ 42.2°.
  • the light emitted from the light source 41 strikes the refractive index number ⁇ of the light guiding layer 40.
  • the refractive index n of the light guiding layer 40 and the number of refractive angles ⁇ of the light emitted from the light source 41 to the light guiding layer 40 are known, and the number of incident angles of the light emitted from the light source 41 to the light guiding layer 40 is determined.
  • the value of ⁇ ranges from 0 ⁇ ⁇ ⁇ 90°
  • the range of sin ⁇ ranges from 0 ⁇ sin ⁇ ⁇ 1 1
  • the range of sin ⁇ is within the above calculation result of 1.1026. Therefore, when the refractive index of the light guiding layer 40 is When the light is incident on the light guiding layer 40 from the light source 41, the incident angle number ⁇ of the light incident on the bottom surface and the lower bottom surface of the light guiding layer 40 can be greater than or equal to the critical angle, thereby causing the light source 41 to be fired. All light rays to the upper and lower bottom surfaces of the light guiding layer 40 are totally reflected in the light guiding layer 40.
  • the number of incident angles ⁇ of the light rays incident on the upper and lower bottom surfaces of the light guiding layer 40 may be greater than or equal to the critical angle of the light guiding layer 40, so that the display device is used only in the display device.
  • the display device When displayed, the light seen by the human eye is only the light used by the display device for display, and the light emitted from the upper surface of the light guiding layer 40 is prevented from affecting the contrast of the screen displayed by the display device.
  • the display device is used for fingerprint recognition, the finger touches the display device, and the light guiding layer 40 is subjected to a force to deform at the touch position of the finger, thereby destroying the total reflection of the light in the light guiding layer 40, and the light is guided.
  • the light layer 40 is emitted to the finger, and is diffused by the finger to the plurality of photosensitive sensing units 10, thereby realizing fingerprint recognition.
  • the light transmission hole forming layer 20 includes a first liquid crystal layer 22 sealed in the first cavity, and a first pixel electrode for driving the first liquid crystal layer 22. 23 and a first common electrode 24.
  • the first pixel electrode 23 and the first common electrode 24 are disposed at least in a region other than the light transmission hole 21.
  • the light transmission hole forming layer 20 further includes a first polarizer 25 disposed on a side of the first cavity close to the display panel 1 and a second polarizer 26 disposed on a side away from the display panel 1.
  • the liquid crystal of the first liquid crystal layer 22 is a cholesteric liquid crystal or a PDLC (Polymer Dispersed Liquid Crystal).
  • the light transmission hole forming layer 20 further includes a third substrate disposed on a side of the first liquid crystal layer 22 close to the display panel 1 and a fourth substrate disposed on a side away from the display panel 1.
  • the transmission axes of the first polarizer 25 and the second polarizer 26 are vertically designed.
  • the light-transmitting hole forming layer 20 forms the light-transmitting hole 21 in a TN (Twisted Nematic) mode
  • the light-transmitting hole forming layer 20 is in a white state without being powered, and in the case of power-on It is black.
  • the light-transmitting hole forming layer 20 is switched to the small hole state, there is no voltage between the first pixel electrode 23 and the first common electrode 24 in the region where the light-transmitting hole 21 is located, so that the region allows light to pass therethrough.
  • a voltage is applied between the first pixel electrode 23 and the first common electrode 24 to shield the region from light.
  • the light transmission hole formation layer 20 When the light transmission hole forming layer 20 forms the light transmission hole 21 in the ADS (Advanced Super Dimension Switch) mode, the light transmission hole formation layer 20 is black in the case of no power application, and is powered. In the case of white.
  • the light-transmitting hole forming layer 20 is switched to the small hole state, a voltage is applied between the first pixel electrode 23 and the first common electrode 24 in the region where the light-transmitting hole 21 is located, so that the region allows light to pass therethrough. In a region other than the light-transmitting hole 21, there is no voltage between the first pixel electrode 23 and the first common electrode 24, and the region is shielded from light.
  • the transmission axes of the first polarizer 25 and the second polarizer 26 are designed in parallel.
  • the light-transmitting hole forming layer 20 forms the light-transmitting hole 21 in a TN (Twisted Nematic) mode
  • the light-transmitting hole forming layer 20 is black in the case of no power, and in the case of power-on It is white.
  • a voltage is applied between the first pixel electrode 23 and the first common electrode 24 in the region where the light-transmitting hole 21 is located, so that the region allows light to pass therethrough. In a region other than the light-transmitting hole 21, there is no voltage between the first pixel electrode 23 and the first common electrode 24, and the region is shielded from light.
  • the light-transmitting hole forming layer 20 When the light-transmitting hole forming layer 20 forms the light-transmitting hole 21 in the ADS (Advanced Super Dimension Switch) mode, the light-transmitting hole forming layer 20 is in a white state without being powered, and is powered. In the case of black.
  • the light-transmitting hole forming layer 20 is switched to the small hole state, there is no voltage between the first pixel electrode 23 and the first common electrode 24 in the region where the light-transmitting hole 21 is located, so that the region allows light to pass therethrough. In a region other than the light-transmitting hole 21, a voltage is applied between the first pixel electrode 23 and the first common electrode 24 to shield the region from light.
  • the embodiment of the present disclosure utilizes the first pixel electrode 23 and the first common electrode 24 to drive the first liquid crystal layer 22 to deflect, so that the light transmission hole forming layer 20 is switched between the light transmitting state and the small hole state, and the technology is mature and does not affect the display device. normal display.
  • the liquid crystal lens layer 30 includes a second liquid crystal layer 32 sealed in the second cavity, and a second pixel electrode for driving the second liquid crystal layer 32. 33 and a second common electrode 34.
  • the second pixel electrode 33 and the second common electrode 34 are used to drive the second liquid crystal layer 32 to switch between the non-lens and lens states.
  • the liquid crystal lens layer 30 further includes a fifth substrate disposed on a side of the second liquid crystal layer 32 close to the display panel 1 and a sixth substrate disposed on a side away from the display panel 1.
  • the embodiment of the present disclosure utilizes the second pixel electrode 33 and the second common electrode 34 to drive the second liquid crystal layer 32 to deflect, thereby switching the liquid crystal lens layer 30 between the non-lens state and the lens state, and the technology is mature and does not affect the display device. display.
  • the display panel 1 includes a first substrate 101 and a second substrate 102 disposed on the box, wherein the second substrate 102 is adjacent to the first substrate 101 and is adjacent to the transparent hole.
  • the formation layer 20 is disposed, and the plurality of photosensitive sensing units 10 are disposed on the second substrate 102.
  • the plurality of photosensitive sensing units 10 may be disposed on a side of the second substrate 102 adjacent to the first substrate 101 . In one or more embodiments, as shown in FIG. 9, a plurality of photosensitive sensing units 10 may also be disposed on a side of the second substrate 102 away from the first substrate 101.
  • the plurality of photosensitive sensing units 10 when the plurality of photosensitive sensing units 10 are disposed on the first substrate 101, the plurality of photosensitive sensing units 10 are disposed on the second substrate 102 to prevent light from passing through the display panel 1. , causing the light energy to decay.
  • the plurality of photosensitive sensing units 10 may be disposed on a side of the first substrate 101 adjacent to the second substrate 102, or may be disposed on a side of the first substrate 101 away from the second substrate 102.
  • the substrate in the display device includes the first substrate 101 and the second substrate 102 in the display panel 1, the third substrate and the fourth substrate in the light transmission hole forming layer 20, and the fifth substrate in the liquid crystal lens layer 30.
  • a sixth substrate in addition, a light guiding layer 40 is further included.
  • the display device includes six substrates, namely, a first substrate 101, a second substrate 102, a third substrate, a fourth substrate, a fifth substrate, and a sixth substrate.
  • the second case the display device includes five substrates.
  • the light guiding layer 40 serves as a sixth substrate.
  • the third case the display device includes four substrates.
  • the liquid crystal of the first liquid crystal layer 22 is a cholesteric liquid crystal or a PDLC.
  • the first polarizer 25 is disposed on a side of the third substrate adjacent to the fourth substrate, and the second polarizer 26 is disposed.
  • the third substrate is shared with the second substrate 102, and the fourth substrate is shared with the fifth substrate.
  • the fourth case the display device includes three substrates.
  • the light guiding layer 40 serves as a sixth substrate, and the third substrate is shared with the second substrate 102, and the fourth substrate and the fifth substrate are shared.
  • the plurality of photosensitive sensing units 10 are evenly distributed in an array, and the total area occupied by the plurality of photosensitive sensing units 10 in the display panel 1 is a sensing area, and is displayed.
  • the area other than the sensing area in the display area of the panel 1 is the light exit area 2.
  • the area ratio of the sensing area to the light exit area 2 is greater than or equal to 1:4 and less than or equal to 1:1.
  • the embodiment of the present disclosure can make the plurality of photosensitive sensing units 10 evenly arranged in the display panel 1 by arranging the plurality of sensing units 10 in an array arrangement, and the finger touches the display device at any position on the display side. Fingerprint recognition; the area ratio of the sensing area to the light exit area 2 is greater than or equal to 1:4 and less than or equal to 1:1, and within the area ratio range, when the display device is used for display, the aperture ratio may not be Reducing the normal display that affects the display device.
  • the area ratio of the sensing area to the light exit area 2 is equal to 1:1, and the fingerprint recognition effect is best without affecting the normal display of the display device.
  • each photosensitive sensing unit 10 occupies a region in the display panel 1 with a pixel region 4 of the display panel 1 (as shown in FIGS. 12(a) and 12(b)) or a sub-pixel.
  • the area ratio of the region 3 is greater than or equal to 1:4 and less than or equal to 1:1.
  • the pixel region 4 refers to a minimum repeating region in which a plurality of colors can be presented
  • the sub-pixel region 3 refers to a region in the pixel region 4 for presenting a primary color
  • the pixel region 4 is generally At least three sub-pixel regions 3 are included.
  • the sub-pixel region 3 may be a red sub-pixel region, a green sub-pixel region, or a blue sub-pixel region.
  • the pixel area 4 may be an area including at least one red sub-pixel area, one green sub-pixel area, and one blue sub-pixel area.
  • the pixel region 4 includes one sub-pixel region 3, and the size of the pixel region 4 is the size of the sub-pixel region 3.
  • the photosensitive sensing unit 10 can be in one-to-one correspondence with each pixel region 4 or each sub-pixel region 3 in the display panel 1, or the photosensitive sensing element 10 is disposed in a partial pixel region 4 in the display panel 1 or
  • the partial sub-pixel area 3 can be used for fingerprint recognition as long as the size of the area in which the plurality of photosensitive sensing units 10 are located.
  • the embodiment of the present disclosure sets each photosensitive sensing unit 10 in units of one pixel or one sub-pixel in the display panel 1, and the plurality of photosensitive sensing units 10 can be evenly arranged in the display panel 1.
  • the area ratio of the area occupied by each photosensitive sensing unit 10 in the display panel 1 to the pixel area 4 or the sub-pixel area 3 is greater than or equal to 1:4 and less than or equal to 1:1. Within this area ratio range, when the display device is used for display, the normal display of the display device may not be affected by the decrease in the aperture ratio.
  • the area ratio of the area occupied by each photosensitive sensing unit 10 in the display panel 1 to the pixel area 4 or the sub-pixel area 3 of the display panel 1 is equal to 1:1. Fingerprint recognition works best without affecting the normal display of the display device.
  • fingerprint recognition may be inaccurate, and therefore, at the center of each photosensitive sensing unit 10, the center of the light-transmitting hole 21 facing the photosensitive sensing unit 10, and the photosensitive sensing unit 10
  • the centers of the facing convex lenses 31 are on the same vertical line, in one or more embodiments, as shown in FIG. 4, when the liquid crystal lens layer 30 is in a lens state, parallel to the display panel In the direction of 1, the adjacent convex lenses 31 are adjacently disposed.
  • the aperture of each convex lens 31 is D0, and the vertical distance from the center of the convex lens 31 to the center of the light transmission hole 21 facing it is H0, and the light transmission hole 21
  • the center of the photosensitive sensor unit 10 has a width ranging from greater than or equal to the vertical distance H1 of the photosensitive sensor unit 10 opposite thereto.
  • the aperture D0 of one convex lens 31 is equal to the width r of the light transmission hole 21 and the adjacent light transmission hole 21
  • the width of the photosensitive sensing unit 10 is equal to the sum of the width r of the light transmitting holes 21 and the width d of the non-light transmitting regions between the adjacent light transmitting holes 21.
  • the width r of the light-transmissive hole 21 is very small compared to the width d of the non-transmissive region between the adjacent light-transmissive holes 21, which is negligible. Therefore, the width of the photosensitive sensing unit 10 is approximately equal to the width d of the non-light transmitting region between the adjacent light transmitting holes 21.
  • the aperture of the convex lens 31 and the transparent hole 21 are The widths are D0 and r in Fig. 4, respectively.
  • the width r of the light transmission hole 21 indicates the diameter of the circular shape.
  • the width r of the light transmission hole 21 indicates the major or minor axis of the elliptical shape.
  • the width r of the light transmission hole 21 indicates the side length of one side of the square.
  • the aperture D0 of the convex lens 31 indicates the diameter of the circular shape; If the face of the convex lens 31 away from the lower bottom surface of the light guiding layer 40 includes a plane, the aperture D0 of the convex lens 31 indicates the diameter of the plane.
  • the aperture D0 of the convex lens 31 indicates the long axis of the elliptical shape. Or short axis. If the plane of the convex lens 31 away from the lower surface of the light guiding layer 40 includes a plane, the aperture D0 of the convex lens 31 indicates the major or minor axis of the plane.
  • the aperture D0 of the convex lens 31 indicates the side length of the square side. If the plane of the convex lens 31 away from the lower surface of the light guiding layer 40 includes a plane, the aperture D0 of the convex lens 31 indicates the side length of one side of the plane.
  • the width of the photosensitive sensing unit 10 is greater than or equal to And
  • the adjacent photosensitive sensing unit 10 is adjacently disposed, the light rays that are incident on the plane of the photosensitive sensing unit 10 through the transparent hole 21 do not overlap, thereby avoiding fingerprint recognition due to light overlap. Causing interference, resulting in inaccurate fingerprint recognition.
  • An embodiment of the present disclosure further provides a control method of a display device according to any of the foregoing embodiments of the present disclosure, the display device comprising a control module.
  • the control module After the control module receives the fingerprint identification signal, the light transmission hole forming layer 20 of the fingerprint identification area is switched to the small hole state, the liquid crystal lens layer 30 is switched to the lens state, and is disposed on the light guiding layer based on the light guiding layer 40.
  • the light source 41 on the side 40 and the plurality of photosensitive sensing units 10 cause the display device to perform fingerprint recognition.
  • control light transmission hole forming layer 20 is switched to the light transmitting state, and the liquid crystal lens layer 30 is switched to the non-lens state, so that the display device performs display.
  • the fingerprint identification area may be a display area of the display panel 1 or may be smaller than a display area of the display panel 1 .
  • the fingerprint identification area is the display area of the display panel 1
  • the control module receives the fingerprint identification signal, any position of the display area can be used for fingerprint recognition.
  • the fingerprint recognition area is smaller than the display area of the display panel 1, the fingerprint recognition area may be used for fingerprint recognition, and an area other than the fingerprint recognition area in the display area of the display panel 1 may be used for display.
  • An embodiment of the present disclosure provides a control method of a display device including a display panel 1 in which a light-transmitting hole forming layer 20, a liquid crystal lens layer 30, and a liquid crystal lens layer 30 are sequentially disposed in a direction away from the display panel 1 on the display side of the display panel 1.
  • the light guiding layer 40 and the light source 41 are disposed on the side of the light guiding layer 40.
  • the light-transmitting hole forming layer 20 of the fingerprint recognition area can be switched to the small hole state, the liquid crystal lens layer 30 can be switched to the lens state, and the display area of the display panel 1 is other than the fingerprint identification area. Other areas are still available for normal display.
  • the light emitted from the light source 41 is incident on the finger from the light guiding layer 40, and the light diffused by the finger first passes through the convex lens 31 of the liquid crystal lens layer 30 to gather the light, thereby increasing the light energy of the valley and the ridge. As the light energy of the valley and ridge increases, the difference in light energy between the two increases.
  • the light passing through the convex lens 31 passes through the light-transmitting hole to form the light-transmitting hole 21 of the layer 20, so that the collected light is incident on the plurality of photosensitive sensing units 10 through the light-transmitting hole 21, and light of other regions except the light-transmitting hole 21 can be eliminated. Interference.
  • the present disclosure achieves accurate identification of fingerprints by increasing the difference in light energy between the valleys and the ridges, and eliminating interference of light rays other than the light-transmitting holes 21.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Image Input (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

一种显示装置，包括显示面板(1)，其具有多个光敏传感单元(10)。显示装置还包括位于显示面板(1)的显示侧且沿远离显示面板(1)的方向依次设置的透光孔形成层(20)、液晶透镜层(30)、导光层(40)，以及设置在导光层侧面的光源(41)。透光孔形成层(20)可在透光状态和小孔状态之间切换，小孔状态为透光孔形成层(20)用于形成与每个光敏传感单元(10)正对的透光孔的状态。液晶透镜层(30)可在非透镜状态和透镜状态之间切换，透镜状态为液晶透镜层(30)用于形成与每个光敏传感单元(10)正对的凸透镜的状态。还提供了一种该显示装置的控制方法。

Description

显示装置及其控制方法
相关申请的交叉引用
本申请要求于2017年04月10日递交的中国专利申请201710229236.6号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开涉及显示装置及其控制方法。
背景技术
随着指纹识别技术的发展，其广泛地应用于手机、平板电脑、电视、门禁、以及保险柜等设备中。指纹识别技术主要有光学式、电容式、以及超声波式，其中，光学式指纹识别技术的识别范围更广、且成本较低。
发明内容
本公开的实施例提供一种显示装置，包括显示面板，所述显示面板包含有多个光敏传感单元，并且显示装置还包括：位于所述显示面板的显示侧且沿远离所述显示面板的方向依次设置的透光孔形成层、液晶透镜层、导光层，以及设置在所述导光层侧面的光源。
其中，所述透光孔形成层可在透光状态和小孔状态之间切换，所述小孔状态为所述透光孔形成层用于形成与每个光敏传感单元正对的透光孔的状态；所述液晶透镜层可在非透镜状态和透镜状态之间切换，所述透镜状态为所述液晶透镜层用于形成与每个所述光敏传感单元正对的凸透镜的状态。
在一个或多个实施例中，每个所述光敏传感单元的中心、与所述光敏传感单元正对的所述透光孔的中心、与所述光敏传感单元正对的所述凸透镜的中心在同一竖直连线上。
在一个或多个实施例中，所述光源发出的光线进入所述导光层，并射到所述导光层的上底面和下底面；射到所述导光层上底面和下底面的所述光线的入射角度数，大于或等于所述导光层的临界角度数。
在一个或多个实施例中，所述透光孔形成层包括密封在第一腔体中的第一液晶 层、以及用于驱动所述第一液晶层的第一像素电极和第一公共电极；所述第一像素电极和所述第一公共电极至少设置在除所述透光孔之外的区域。
在一个或多个实施例中，所述液晶透镜层包括密封在第二腔体中的第二液晶层、以及用于驱动所述第二液晶层的第二像素电极和第二公共电极；所述第二像素电极和所述第二公共电极用于驱动所述第二液晶层在非透镜状态和透镜状态之间切换。
在一个或多个实施例中，所述显示面板包括对盒设置的第一基板和第二基板，其中所述第二基板相对所述第一基板靠近所述透光孔形成层设置，所述多个光敏传感单元设置于所述第二基板上。
在一个或多个实施例中，所述多个光敏传感单元呈阵列式均匀分布，所述多个光敏传感单元在所述显示面板中占据的总区域为传感区域，所述显示面板的显示区域中除所述传感区域以外的区域为出光区域。所述传感区域与所述出光区域的面积比可以大于或等于1:4、且小于或等于1:1。
在一个或多个实施例中，每个所述光敏传感单元在所述显示面板中所占区域与所述显示面板的像素区域或子像素区域的面积比可以大于等于1:4、且小于等于1:1。
在一个或多个实施例中，在每个所述光敏传感单元的中心、与所述光敏传感单元正对的所述透光孔的中心、与所述光敏传感单元正对的所述凸透镜的中心在同一竖直连线上的情况下，当所述液晶透镜层为透镜状态时，在平行于所述显示面板的方向，相邻所述凸透镜邻接设置。
在一个或多个实施例中，每个所述凸透镜的孔径为D0，所述凸透镜的中心到与其正对的所述透光孔的中心的垂直距离为H0，所述透光孔的中心到与其正对的所述光敏传感单元的垂直距离H1，所述光敏传感单元的宽度范围为大于等于
Figure PCTCN2018077891-appb-000001
且
Figure PCTCN2018077891-appb-000002
在一个或多个实施例中，所述光敏传感单元还包括设置在每个所述光敏传感单元远离所述透光孔形成层的一侧上的遮光层。
本公开的实施例，提供一种如第一方面所述显示装置的控制方法，所述显示装置包括控制模块；当所述控制模块接收到指纹识别信号后，控制指纹识别区域的透光孔形成层切换至小孔状态、液晶透镜层切换至透镜状态，并基于导光层、设置在 所述导光层侧面的光源、以及多个光敏传感单元，使所述显示装置进行指纹识别；当所述控制模块接收到显示信号后，控制所述透光孔形成层切换至透光状态、所述液晶透镜层切换至非透镜状态，使所述显示装置进行显示。
附图说明
为了更清楚地说明本公开的实施例的技术方案，下面将对实施例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公开的一些实施例，对于本领域普通技术人员来讲，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为相关技术提供的显示装置的结构示意图；
图2为本公开的实施例提供的显示装置的结构示意图；
图3为本公开的实施例提供的用于显示时的显示装置的原理图；
图4为本公开的实施例提供的用于指纹识别时的显示装置的原理图；
图5为本公开的实施例提供的光线在导光层中的光路图；
图6(a)为本公开的实施例提供的透光孔的示意图一；
图6(b)为本公开的实施例提供的透光孔的示意图二；
图7(a)为本公开的实施例提供的凸透镜的示意图一；
图7(b)为本公开的实施例提供的凸透镜的示意图二；
图8为本公开的实施例提供的显示面板的结构示意图一；
图9为本公开的实施例提供的显示面板的结构示意图二；
图10为本公开的实施例提供的多个光敏传感单元的设置方式的示意图一；
图11为本公开的实施例提供的多个光敏传感单元的设置方式的示意图二；
图12(a)为本公开的实施例提供的多个光敏传感单元的设置方式的示意图三；
图12(b)为本公开的实施例提供的多个光敏传感单元的设置方式的示意图四。
具体实施方式
下面将结合本公开的实施例中的附图，对本公开的实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开的一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
如图1所示，相关的光学式指纹识别器中设置有多个光电传感器50，背光源 60发出的光照射到手指后，光束通过手指发生漫发射，其中一部分光束被光电传感器50吸收。光束经过手指的波谷(后文称为谷)和波峰(后文称为脊)发生漫发射时，反射光的光能存在差异。光束经过谷反射的光能相对脊反射的光能低，光电传感器50可基于接收到的光能的差异来进行指纹识别。
然而，由于光电传感器50只接收到很少一部分经手指漫反射的光束，且光束经过手指的谷和脊，反射的光能量差异极小，不利于光电传感器50判断出谷和脊的相对位置。同时，在手指的谷和脊之间存在环境光干扰的情况下，更不利于光电传感器50对指纹进行准确的识别。
本公开的实施例提供一种显示装置，如图2-4所示，包括显示面板1，显示面板1包含有多个光敏传感单元10。该显示装置还包括位于显示面板1的显示侧且沿远离显示面板1的方向依次设置的透光孔形成层20、液晶透镜层30、导光层40，以及设置在导光层40侧面的光源41。
透光孔形成层20可在透光状态(如图3所示)和小孔状态(如图4所示)之间切换。小孔状态为透光孔形成层20形成与每个光敏传感单元10正对的透光孔21的状态。液晶透镜层30可在非透镜状态(如图3所示)和透镜状态(如图4所示)之间切换。透镜状态为液晶透镜层30用于形成与每个光敏传感单元10正对的凸透镜31的状态。导光层40具有光滑的上底面和下底面。
此处，为了避免用于显示的光线对射到多个光敏传感单元10上用于指纹识别的光线造成干扰，每个光敏传感单元10除了包括光敏传感单元本体之外，还可以包括遮光层。遮光层设置在每个光敏传感单元本体远离透光孔形成层20的一侧。光敏传感单元本体可以包括敏感元件和转换元件等。在一个或多个实施例中，光敏传感单元本体可以包括发送器、接收器和检测电路等。
需要说明的是，第一，所述显示装置可用于识别指纹、掌纹等有纹路的受测物，本公开对此不做限定。为了方便阐述，后文均以指纹识别进行详细说明。
第二，光敏传感单元10用于将光信号转化为电信号，其可以是光敏传感器、光电传感器等。当光敏传感单元10为光敏传感器时，光敏传感器的结构可以是PIN(positive-intrinsic-negative，简称结光电二极管)结构。在一个或多个实施例中，光敏传感器的结构可以是PN(Positive-Negative junction，简称光敏二极管)等。
第三，本公开不对多个光敏传感单元10的排布方式进行限定。多个光敏传感单元10的设置位置只要满足当手指触摸显示装置显示侧用于指纹识别区域的任意位置时，都可进 行指纹识别，且多个光敏传感单元10所占的区域不影响显示装置的正常显示即可。相邻光敏传感单元10可以邻接设置(即两个光敏传感单元间没有用于出光的区域)，也可以间隔设置(即两个光敏传感单元间由用于出光的区域间隔开)。在一个或多个实施例中，显示装置中每两个相邻的光敏传感单元10均间隔设置。在一个或多个实施例中，显示装置中的相邻光敏传感单元10既可以邻接设置，也可以间隔设置，且邻接设置的光敏传感单元10不影响显示装置的正常显示。
第四，每个光敏传感单元10的中心和与其正对的透光孔21的中心可以在一条竖直连线上，也可以不在一条竖直连线上，只要一透光孔21在显示面板1上的正投影与相应光敏传感单元10在显示面板1上的正投影重叠(包括完全重叠和部分重叠)即可。
每个光敏传感单元10的中心和与其正对的凸透镜31的中心可以在一条竖直连线上，也可以不在一条竖直连线上，只要一凸透镜31在显示面板1上的正投影与相应光敏传感单元10在显示面板1上的正投影重叠(包括完全重叠和部分重叠)即可。
通常显示面板1具有平行的上下表面。在显示面板1上的正投影是指凸透镜31、透光孔21、光敏传感单元10沿垂直于显示面板1的上、下表面的方向，投到显示面板1的上、下表面上的投影。
第五，不对透光孔形成层20的形成方式进行限定，只要透光孔形成层20可在透光状态和小孔状态之间切换即可。例如，透光孔形成层20采用电极驱动液晶的方式，或者采用电泳技术。本领域技术人员应该理解，透光孔形成层20的小孔状态是形成允许光通过的透光孔21的状态，其含义是指透光孔21所在的区域透光，其他区域遮光。透光孔形成层20的透光状态顾名思义是指允许光透过的状态，即透光孔形成层20中状态可变的区域均变为透光状态。“状态可变的区域”的示例是当透光孔形成层20切换至小孔状态时，除透光孔21以外的遮光区域。
本领域技术人员应该理解，液晶透镜层30的透镜状态是形成凸透镜31的状态，其含义是指凸透镜31所在的区域使光线聚拢，其他区域根据液晶的偏转不同，呈透光或遮光状态。为了使显示装置可用于显示，液晶透镜层30的非透镜状态应为允许光透过的状态，即，在非透镜状态下，液晶透镜层30中的所有区域均变为透光状态。
第六，导光层40靠近显示面板1一侧的底面为下底面，远离显示面板1一侧的底面为上底面，邻接于上底面和下底面之间的多个面为导光层40的多个侧面。光源41可以设置在导光层40的一个侧面，也可以设置在导光层40的多个侧面。
第七，导光层40可以包括网点，也可以不包括网点。若导光层40不包括网点，光源 41发出的光线从导光层40的侧面进入导光层40，部分光线在导光层40内发生全反射，部分光线从导光层40的上底面射出。当手指触摸显示装置时，从导光层40上底面射出的光线射到手指，经过手指的漫反射射到多个光敏传感单元10上，从而实现指纹识别。若导光层40包括网点，光源41发出的光线从导光层40的侧面进入导光层40，并从导光层40的上底面射出。当手指触摸显示装置时，从导光层40上底面射出的光线射到手指，经过手指的漫反射射到多个光敏传感单元10上，从而实现指纹识别。
第八，不对导光层40的材料进行限定，其可以是聚甲基丙烯酸甲酯(PMMA)、环烯的热可塑性树脂、聚碳酸酯(PC)等树脂材料。环烯的热可塑性树脂可以是环烯烃聚合物(COP)。
第九，不对透光孔21和凸透镜31在导光层40下底面的正投影的形状进行限定，例如：如图6(a)和6(b)所示，透光孔21在导光层40下底面的正投影可以是矩形、圆形、椭圆形(图中未示出)等。如图7(a)和7(b)所示，凸透镜31在导光层40下底面的正投影可以是矩形、圆形(图中未示出)、椭圆形(图中未示出)等。在一个或多个实施例中，凸透镜31和透光孔21在导光层40下底面的正投影为圆形。
第十，所述显示装置可以是液晶显示器，也可以是OLED(Organic Light-Emitting Diode，简称有机发光二极管)显示器。
当显示装置为液晶显示器时，其包括显示面板1和背光源，背光源提供给显示装置用于显示的光源。显示面板1包括阵列基板、对盒基板以及设置在二者之间的液晶层。阵列基板可以包括TFT(Thin Film Transistor，简称薄膜晶体管)，与TFT的漏极电连接的像素电极。阵列基板进一步的还可以包括公共电极。对盒基板可以包括黑矩阵和彩膜。此处，彩膜可以设置在对盒基板上，也可设置在阵列基板上。公共电极可以设置在阵列基板上，也可设置在对盒基板上。在此基础上，液晶显示装置也可以包括分别设置在显示面板1的靠近和远离背光源侧的偏光片。
当显示装置为OLED时，由于OLED为自发光装置，可提供给自身用于显示的光源。OLED包括阵列基板和封装基板。阵列基板可以包括TFT，与TFT的漏极电连接的阳极、阴极、以及位于阳极和阴极之间的有机材料功能层。
本公开的实施例提供一种显示装置，在显示面板1显示侧远离显示面板1的方向依次设置透光孔形成层20、液晶透镜层30、导光层40，以及在导光层40的侧面设置光源41。当所述显示装置只用于显示时，透光孔形成层20切换至透光状态，液晶透镜层30切换至非透镜状态，使所述显示装置进行显示。当所述显示装置用 于指纹识别时，指纹识别区域的透光孔形成层20可切换至小孔状态、液晶透镜层30可切换至透镜状态，并且显示面板1的显示区域中除指纹识别区域以外的其他区域仍可用于正常显示。光源41发出的光从导光层40射到手指，经手指漫反射的光线先通过液晶透镜层30的凸透镜31使光线聚拢，从而增大谷、脊的光能。随着谷、脊光能的增大，二者之间光能的差值也增大。通过凸透镜31的光线再经过透光孔形成层20的透光孔21，使聚拢后的光线经透光孔21射到多个光敏传感单元10。由此，可排除除透光孔21以外其他区域光线的干扰，本公开通过增加谷、脊之间光能的差值，且排除除透光孔21以外其他区域光线的干扰，从而实现对指纹进行准确的识别。
在此基础上，考虑到凸透镜31中至少有一个面为曲面，而所有曲面中，球面最适合批量生产，并容易加工到高精度，因此，在一个或多个实施例中，凸透镜31为球面透镜。在一个或多个实施例中，如图4所示，每个光敏传感单元10的中心、与光敏传感单元10正对的透光孔21的中心、与光敏传感单元10正对的凸透镜31的中心在同一竖直连线上。
本公开的实施例通过将与每个光敏传感单元10正对的凸透镜31的中心，和与所述光敏传感单元10正对的透光孔21的中心设置在同一竖直连线上，可以使通过透光孔21的光线只包括经凸透镜31聚拢后的光线，从而使光敏传感单元10完全排除除聚拢光线以外的其他光线的干扰。考虑到相邻光敏传感单元10邻接设置的情况，为了使射到光敏传感单元10所在平面的光线不重叠，通过透光孔21的光线全部射到与其正对的光敏传感单元10上。因此，将光敏传感单元10的中心和与所述光敏传感单元10正对的透光孔21的中心设置在同一竖直连线上，可以缩小光敏传感单元10的宽度，从而避免光敏传感单元10的宽度太大，影响显示装置的开口率。
在一个或多个实施例中，光源41发出的光线进入导光层40，并射到导光层40的上底面和下底面。射到导光层40上底面和下底面的所述光线的入射角度数，大于或等于导光层40的临界角度数。
需要说明的是，本领域的技术人员应该理解，当光线由光密介质射向光疏介质时，若光线在光密介质的入射角度数增加到一定数值，则光线在光疏介质的折射角度数将达到90°，这时在光疏介质中将不会出现折射光线，光线仍在光密介质中反射，这种现象称为全反射现象。光线在光疏介质的折射角度数为90°时，光线在光 密介质的入射角度数即为临界角度数，若光线在光密介质的入射角度数大于或等于临界角度数，则光线在光密介质中发生全反射。
而本公开的实施例中，如图5所示，光线从光源41射入导光层40，再从射向空气或在导光层40内反射。导光层40可看作光密介质，空气可看作光疏介质，射到导光层40上底面和下底面的光线的入射角γ，即为光线在光密介质的入射角。因此，当射到导光层40上底面和下底面的光线的入射角γ的度数大于或等于导光层40的临界角度数时，光线在导光层40中发生全反射。此时，当所述显示装置只用于显示时，人眼看到的光线只有所述显示装置用于显示的光线；当所述显示装置用于指纹识别时，手指触摸显示装置，导光层40受到力的作用，在手指触摸位置发生形变，从而破坏了光线在导光层40中的全反射。之后，光从导光层40射出到手指，经过手指的漫反射射到多个光敏传感单元10上，从而实现指纹识别(图5仅示出光线射到导光层的上底面，其中α、β、γ的取值范围为大于等于0°、且小于等于90°)。
此处，若导光层40的折射率大于等于
Figure PCTCN2018077891-appb-000003
则可实现射到导光层40上底面和下底面的光线的入射角度数γ，大于或等于导光层40的临界角度数。否则，可通过改变光源41发出的光线射到导光层40的入射角度数α，来实现射到导光层40上底面和下底面的光线的入射角度数γ，大于或等于导光层40的临界角度数。
示例的，如图5所示，若导光层40的材料为聚甲基丙烯酸甲酯(PMMA)，折射率为n＝1.49，sin90°＝1，则临界角度数为
Figure PCTCN2018077891-appb-000004
因此，射到导光层40上底面和下底面的所述光线的入射角度数γ大于或等于42.2°即可，即，γ≥42.2°。
由图5可以看出，光源41发出的光线射到导光层40的折射角度数β。与射到导光层40上底面和下底面的光线的入射角度数γ。之和为90°，即，β+γ＝90°。因此，90°-β≥42.2°，得到β≤47.8°。
在此基础上，已知导光层40的折射率n、以及光源41发出的光线射到导光层40的折射角度数β，求光源41发出的光线射到导光层40的入射角度数α。sin47.8°≈0.74，根据折射率公式
Figure PCTCN2018077891-appb-000005
得到：sinα≤0.74*1.49＝1.1026。
已知α的取值范围为0≤α≤90°，sinα的取值范围为0≤sinα≤1，sinα的取值范围在上述计算结果1.1026之内，因此，当导光层40的折射率为1.49时，从光源41射入导光层40的光线，均可实现射到导光层40上底面和下底面的光线 的入射角度数γ大于或等于临界角度数，进而使从光源41射到导光层40上底面和下底面的所有光线在导光层40中发生全反射。
本公开的实施例中，可通过使射到导光层40上底面和下底面的所述光线的入射角度数γ大于或等于导光层40的临界角度数，使得在所述显示装置只用于显示时，人眼看到的光线只有所述显示装置用于显示的光线，避免从导光层40上底面射出的光线对所述显示装置显示的画面的对比度产生影响。而当所述显示装置用于指纹识别时，手指触摸显示装置，导光层40受到力的作用，在手指触摸位置发生形变，从而破坏了光线在导光层40中的全反射，光从导光层40射出到手指，经过手指的漫反射射到多个光敏传感单元10上，从而实现指纹识别。
在一个或多个实施例中，如图2所示，透光孔形成层20包括密封在第一腔体中的第一液晶层22、以及用于驱动第一液晶层22的第一像素电极23和第一公共电极24。第一像素电极23和第一公共电极24至少设置在除透光孔21之外的区域。
此处，透光孔形成层20还包括设置在第一腔体靠近显示面板1一侧的第一偏光片25和远离显示面板1一侧的第二偏光片26。在一个或多个实施例中，第一液晶层22的液晶为胆甾相液晶或PDLC(Polymer Dispersed Liquid Crystal，简称聚合物分散液晶)。
此外，透光孔形成层20还包括设置在第一液晶层22靠近显示面板1一侧的第三基板和远离显示面板1一侧的第四基板。
需要说明的是，根据第一偏光片25和第二偏光片26的透过轴的相对位置不同和透光孔形成层20的工作模式不同，具体可分为以下两种情况：
第一种情况：第一偏光片25和第二偏光片26的透过轴垂直设计。
当透光孔形成层20以TN(Twisted Nematic，简称扭曲向列相)模式形成透光孔21时，透光孔形成层20在不加电的情况下为白态，在加电的情况下为黑态。当透光孔形成层20切换至小孔状态时，在透光孔21所在的区域内，第一像素电极23和第一公共电极24之间无电压，使该区域允许光通过。在除透光孔21之外的区域内，第一像素电极23和第一公共电极24之间有电压，使该区域遮光。
当透光孔形成层20以ADS(Advanced Super Dimension Switch简称高级超维场转换)模式形成透光孔21时，透光孔形成层20在不加电的情况下为黑态，在加电的情况下为白态。当透光孔形成层20切换至小孔状态时，在透光孔21所在的区域内，第一像素电极23和第一公共电极24之间有电压，使该区域允许光通过。在 除透光孔21之外的区域内，第一像素电极23和第一公共电极24之间无电压，使该区域遮光。
第二种情况：第一偏光片25和第二偏光片26的透过轴平行设计。
当透光孔形成层20以TN(Twisted Nematic，简称扭曲向列相)模式形成透光孔21时，透光孔形成层20在不加电的情况下为黑态，在加电的情况下为白态。当透光孔形成层20切换至小孔状态时，在透光孔21所在的区域内，第一像素电极23和第一公共电极24之间有电压，使该区域允许光通过。在除透光孔21之外的区域内，第一像素电极23和第一公共电极24之间无电压，使该区域遮光。
当透光孔形成层20以ADS(Advanced Super Dimension Switch简称高级超维场转换)模式形成透光孔21时，透光孔形成层20在不加电的情况下为白态，在加电的情况下为黑态。当透光孔形成层20切换至小孔状态时，在透光孔21所在的区域内，第一像素电极23和第一公共电极24之间无电压，使该区域允许光通过。在除透光孔21之外的区域内，第一像素电极23和第一公共电极24之间有电压，使该区域遮光。
本公开的实施例利用第一像素电极23和第一公共电极24驱动第一液晶层22偏转，从而使透光孔形成层20在透光状态和小孔状态切换，技术成熟且不影响显示装置正常显示。
在一个或多个实施例中，如图2所示，液晶透镜层30包括密封在第二腔体中的第二液晶层32、以及用于驱动所述第二液晶层32的第二像素电极33和第二公共电极34。第二像素电极33和第二公共电极34用于驱动第二液晶层32在非透镜和透镜状态切换。
此外，液晶透镜层30还包括设置在第二液晶层32靠近显示面板1一侧的第五基板和远离显示面板1一侧的第六基板。
本公开的实施例利用第二像素电极33和第二公共电极34驱动第二液晶层32偏转，从而使液晶透镜层30在非透镜状态和透镜状态之间切换，技术成熟且不影响显示装置正常显示。
在一个或多个实施例中，如图8和图9所示，显示面板1包括对盒设置的第一基板101和第二基板102，其中第二基板102相对第一基板101靠近透光孔形成层20设置，多个光敏传感单元10设置于第二基板102上。
需要说明的是，如图8所示，多个光敏传感单元10可以设置在第二基板102 靠近第一基板101的一侧。在一个或多个实施例中，如图9所示，多个光敏传感单元10也可以设置在第二基板102远离第一基板101的一侧。
本公开的实施例中，相较于将多个光敏传感单元10设置在第一基板101上，将多个光敏传感单元10设置在第二基板102上，可避免光线通过显示面板1时，造成光能衰减。
此外，多个光敏传感单元10还可以设置于第一基板101靠近第二基板102的一侧，也可以设置在第一基板101远离第二基板102的一侧。
基于上述，显示装置中的基板包括：显示面板1中的第一基板101和第二基板102、透光孔形成层20中的第三基板和第四基板、液晶透镜层30中的第五基板和第六基板，此外，还包括导光层40。部分基板可以共用，具体分为以下四种情况：
第一种情况：显示装置包括6个基板，即：第一基板101、第二基板102、第三基板、第四基板、第五基板、以及第六基板。
第二种情况：显示装置包括5个基板。其中，导光层40用作第六基板。
第三种情况：显示装置包括4个基板。其中，第一液晶层22的液晶为胆甾相液晶或PDLC，在一个或多个实施例中，第一偏光片25设置在第三基板靠近第四基板的一侧、第二偏光片26设置在第四基板靠近第三基板的一侧，则第三基板与第二基板102共用，第四基板与第五基板共用。
第四种情况：显示装置包括3个基板。其中，导光层40用作第六基板，且第三基板与第二基板102共用，第四基板与第五基板共用。
在一个或多个实施例中，如图10所示，多个光敏传感单元10呈阵列式均匀分布，多个光敏传感单元10在显示面板1中占据的总区域为传感区域，显示面板1的显示区域中除传感区域以外的区域为出光区域2。传感区域与出光区域2的面积比大于或等于1:4、且小于或等于1:1。
本公开的实施例通过将多个传感单元10设置为阵列式排布，可使多个光敏传感单元10在显示面板1中均匀排布，且手指触摸显示装置显示侧任意位置都可进行指纹识别；传感区域与出光区域2的面积比范围为大于或等于1:4、且小于或等于1:1，在此面积比范围内，当显示装置用于显示时，可不因开口率的减小影响显示装置的正常显示。
在此基础上，在一个或多个实施例中，传感区域与出光区域2的面积比等于1:1，在不影响显示装置正常显示的情况下，指纹识别的效果最好。
在一个或多个实施例中，每个光敏传感单元10在显示面板1中所占区域与显示面板1的像素区域4(如图12(a)和12(b)所示)或子像素区域3(如图11所示)的面积比大于等于1:4、且小于等于1:1。
具体的，对于彩色显示装置而言，像素区域4是指其中可呈现多种颜色的最小重复区域，子像素区域3是指在像素区域4中用于呈现一种原色的区域，像素区域4通常包含至少三个子像素区域3。示例的，子像素区域3可以是红色子像素区域、绿色子像素区域或蓝色子像素区域。像素区域4可以是至少包括一红色子像素区域、一绿色子像素区域、一蓝色子像素区域的区域。对于单色光装置而言，像素区域4包括一个子像素区域3，像素区域4的大小即为子像素区域3的大小。
需要说明的是，光敏传感单元10可与显示面板1中的每个像素区域4或每个子像素区域3一一对应，或者光敏传感元10设置于显示面板1中的部分像素区域4或部分子像素区域3，只要多个光敏传感单元10所在的区域大小，可用来进行指纹识别即可。
本公开的实施例以显示面板1中的一个像素或一个子像素为单位设置每个光敏传感单元10，可使多个光敏传感单元10在显示面板1中均匀排布。每个光敏传感单元10在显示面板1中所占的区域与像素区域4或子像素区域3的面积比大于等于1:4、且小于等于1:1。在此面积比范围内，当显示装置用于显示时，可不因开口率的减小影响显示装置的正常显示。
在此基础上，在一个或多个实施例中，每个光敏传感单元10在显示面板1中所占区域与显示面板1的像素区域4或子像素区域3的面积比等于1:1，在不影响显示装置正常显示的情况下，指纹识别的效果最好。
考虑到由于指纹信息的缺失，可能造成指纹识别不准确，因此，在每个光敏传感单元10的中心、与光敏传感单元10正对的透光孔21的中心、与光敏传感单元10正对的凸透镜31的中心在同一竖直连线上的情况下，在一个或多个实施例中，如图4所示，当液晶透镜层30为透镜状态时，在平行于所述显示面板1的方向，相邻凸透镜31邻接设置。
在一个或多个实施例中，如图4所示，每个凸透镜31的孔径为D0，凸透镜31的中心到与其正对的透光孔21的中心的垂直距离为H0，透光孔21的中心到与其正对的光敏传感单元10的垂直距离H1，光敏传感单元10的宽度范围为大于等于
Figure PCTCN2018077891-appb-000006
且
Figure PCTCN2018077891-appb-000007
具体的，如图4所示，若在平行于显示面板1的方向，相邻凸透镜31邻接设置，则一个凸透镜31的孔径D0等于透光孔21的宽度r与相邻透光孔21之间非透光区域的宽度d之和。相较于相邻透光孔21之间非透光区域的宽度d，透光孔21的宽度r非常小，可忽略不计。因此，凸透镜31的孔径D0近似等于相邻透光孔21之间非透光区域的宽度d，即D0＝d。
已知凸透镜31的中心到与其正对的透光孔21的中心的垂直距离为H0，凸透镜31的孔径为D0，求通过凸透镜31的光线通过透光孔21时所成的最大角的度数θ。根据正弦定理，可知
Figure PCTCN2018077891-appb-000008
在此基础上，已知透光孔21的中心到与其正对的光敏传感单元10的垂直距离H1和θ的值，求通过透光孔21的光线射到光敏传感单元10所在的面的最大宽度D1。根据正弦定理，可知
Figure PCTCN2018077891-appb-000009
从而得到
Figure PCTCN2018077891-appb-000010
当相邻光敏传感单元10邻接设置时，光敏传感单元10的宽度等于透光孔21的宽度r与相邻透光孔21之间非透光区域的宽度d之和。相较于相邻透光孔21之间非透光区域的宽度d，透光孔21的宽度r非常小，可忽略不计。因此，光敏传感单元10的宽度近似等于相邻透光孔21之间非透光区域的宽度d。此时，为了使通过透光孔21射到光敏传感单元10所在平面的光线不重叠，则光敏传感单元10的宽度应大于等于D1的值，即光敏传感单元10的宽度范围为大于等于
Figure PCTCN2018077891-appb-000011
进而得到式
Figure PCTCN2018077891-appb-000012
由前述关系知D0＝d，因此，
Figure PCTCN2018077891-appb-000013
化简得到
Figure PCTCN2018077891-appb-000014
需要说明的是，根据观察者的观看位置、以及剖切面的剖切位置不同，则观察者看到的剖视图不同，为了方便阐述，本公开的实施例中凸透镜31的孔径、透光孔21的宽度分别为图4中的D0、r。
示例的，当透光孔21在导光层40下表面的正投影为圆形时，透光孔21的宽度r表示所述圆形的直径。当透光孔21在导光层40下表面的正投影为椭圆形时，透光孔21的宽度r表示所述椭圆形的长轴或短轴。当透光孔21在导光层40下表面的正投影为方形时，透光孔21的宽度r表示所述方形一边的边长。
当凸透镜31在导光层40下表面的正投影为圆形时，若凸透镜31靠近和远离 导光层40下底面的面均为曲面，则凸透镜31的孔径D0表示所述圆形的直径；若凸透镜31远离导光层40下底面的面包括平面，则凸透镜31的孔径D0表示所述平面的直径。当凸透镜31在导光层40下表面的正投影为椭圆形时，若凸透镜31靠近和远离导光层40下底面的面均为曲面，则凸透镜31的孔径D0表示所述椭圆形的长轴或短轴。若凸透镜31远离导光层40下底面的面包括平面，则凸透镜31的孔径D0表示所述平面的长轴或短轴。当凸透镜31在导光层40下表面的正投影为方形时，若凸透镜31靠近和远离导光层40下底面的面均为曲面，则凸透镜31的孔径D0表示所述方形一边的边长。若凸透镜31远离导光层40下底面的面包括平面，则凸透镜31的孔径D0表示所述平面一边的边长。
本公开的实施例中，当光敏传感单元10的宽度大于等于
Figure PCTCN2018077891-appb-000015
且
Figure PCTCN2018077891-appb-000016
时，既可避免指纹信息的缺失，又可满足相邻光敏传感单元10邻接设置时，通过透光孔21射到光敏传感单元10所在平面的光线不重叠，避免因光线重叠对指纹识别造成干扰，导致指纹识别不准确。
本公开的实施例还提供一种如本公开的前述任一实施例所述显示装置的控制方法，所述显示装置包括控制模块。
当控制模块接收到指纹识别信号后，控制指纹识别区域的透光孔形成层20切换至小孔状态、液晶透镜层30切换至透镜状态，并基于导光层40、设置在所述导光层40侧面的光源41、以及多个光敏传感单元10，使所述显示装置进行指纹识别。
当控制模块接收到显示信号后，控制透光孔形成层20切换至透光状态、液晶透镜层30切换至非透镜状态，使所述显示装置进行显示。
需要说明的是，所述指纹识别区域可以为显示面板1的显示区域，也可以小于显示面板1的显示区域。当所述指纹识别区域为显示面板1的显示区域时，若控制模块接收到指纹识别信号，则显示区域的任意位置均可用于指纹识别。当所述指纹识别区域小于显示面板1的显示区域时，所述指纹识别区域可用于指纹识别，显示面板1的显示区域中除指纹识别区域以外的区域可用于显示。
本公开的实施例提供一种显示装置的控制方法，所述显示装置包括显示面板1，通过在显示面板1显示侧远离显示面板1的方向依次设置透光孔形成层20、液晶透镜层30、导光层40，以及在导光层40的侧面设置光源41。当所述显示装置只用于显示时，透光孔形成层20切换至透光状态，液晶透镜层30切换至非透镜状态，使 所述显示装置进行显示。当所述显示装置用于指纹识别时，指纹识别区域的透光孔形成层20可切换至小孔状态、液晶透镜层30可切换至透镜状态，显示面板1的显示区域中除指纹识别区域以外的其他区域仍可用于正常显示。光源41发出的光从导光层40射到手指，经手指漫反射的光线先通过液晶透镜层30的凸透镜31使光线聚拢，从而增大谷、脊的光能。随着谷、脊光能的增大，二者之间光能的差值也增大。通过凸透镜31的光线再经过透光孔形成层20的透光孔21，使聚拢后的光线经透光孔21射到多个光敏传感单元10，可排除除透光孔21以外其他区域光线的干扰。本公开通过增加谷、脊之间光能的差值，且排除除透光孔21以外其他区域光线的干扰，从而实现对指纹进行准确的识别。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。

Claims (13)

  1. 一种显示装置，包括显示面板，所述显示面板包含多个光敏传感单元，并且所述显示装置还包括：位于所述显示面板的显示侧且沿远离所述显示面板的方向依次设置的透光孔形成层、液晶透镜层、导光层，以及设置在所述导光层侧面的光源；
    其中，所述透光孔形成层被配置为可在透光状态和小孔状态之间切换，所述小孔状态为所述透光孔形成层用于形成与每个光敏传感单元正对的透光孔的状态；
    所述液晶透镜层被配置为可在非透镜状态和透镜状态之间切换，所述透镜状态为所述液晶透镜层用于形成与每个所述光敏传感单元正对的凸透镜的状态。
  2. 根据权利要求1所述的显示装置，其中，每个所述光敏传感单元的中心、与所述光敏传感单元正对的所述透光孔的中心、与所述光敏传感单元正对的所述凸透镜的中心在同一竖直连线上。
  3. 根据权利要求1所述的显示装置，其中，所述光源发出的光线进入所述导光层，并射到所述导光层的上底面和下底面；
    其中，射到所述导光层上底面和下底面的所述光线的入射角度数，大于或等于所述导光层的临界角度数。
  4. 根据权利要求1所述的显示装置，其中，所述透光孔形成层包括密封在第一腔体中的第一液晶层、以及用于驱动所述第一液晶层的第一像素电极和第一公共电极；所述第一像素电极和所述第一公共电极至少设置在除所述透光孔之外的区域上。
  5. 根据权利要求1所述的显示装置，其中，所述液晶透镜层包括密封在第二腔体中的第二液晶层、以及用于驱动所述第二液晶层的第二像素电极和第二公共电极；
    所述第二像素电极和所述第二公共电极用于驱动所述第二液晶层在非透镜状态和透镜状态之间切换。
  6. 根据权利要求1所述的显示装置，其中，所述显示面板包括对盒设置的第一基板和第二基板，其中所述第二基板相对所述第一基板靠近所述透光孔形成层设置，所述多个光敏传感单元设置于所述第二基板上。
  7. 根据权利要求1所述的显示装置，其中，所述多个光敏传感单元呈阵列式均匀分布，所述多个光敏传感单元在所述显示面板中占据的总区域为传感区域，所述显示面板的显示区域中除所述传感区域以外的区域为出光区域。
  8. 根据权利要求7所述的显示装置，其中，所述传感区域与所述出光区域的面积比大于或等于1:4、且小于或等于1:1。
  9. 根据权利要求7所述的显示装置，其中，每个所述光敏传感单元在所述显示面板中所占区域与所述显示面板的像素区域或子像素区域的面积比大于等于1:4、且小于等于1:1。
  10. 根据权利要求2所述的显示装置，当所述液晶透镜层为透镜状态时，在平行于所述显示面板的方向，相邻所述凸透镜邻接设置。
  11. 根据权利要求10所述的显示装置，其中，每个所述凸透镜的孔径为D0，所述凸透镜的中心到与其正对的所述透光孔的中心的垂直距离为H0，所述透光孔的中心到与其正对的所述光敏传感单元的垂直距离H1，所述光敏传感单元的宽度范围为大于等于
    Figure PCTCN2018077891-appb-100001
    且
    Figure PCTCN2018077891-appb-100002
  12. 根据权利要求1所述的显示装置，其中，所述光敏传感单元还包括设置在每个所述光敏传感单元远离所述透光孔形成层的一侧上的遮光层。
  13. 一种如权利要求1-12任一项所述显示装置的控制方法，所述显示装置还包括控制模块，并且所述控制方法包括：
    当所述控制模块接收到指纹识别信号后，控制指纹识别区域的透光孔形成层切换至小孔状态、液晶透镜层切换至透镜状态，并基于导光层、设置在所述导光层侧面的光源、以及多个光敏传感单元，使所述显示装置进行指纹识别；
    当所述控制模块接收到显示信号后，控制所述透光孔形成层切换至透光状态、所述液晶透镜层切换至非透镜状态，使所述显示装置进行显示。
PCT/CN2018/077891 2017-04-10 2018-03-02 显示装置及其控制方法 WO2018188427A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US16/086,774 US11106888B2 (en) 2017-04-10 2018-03-02 Display device for fingerprint identification and control method thereof
EP18784706.6A EP3611560B1 (en) 2017-04-10 2018-03-02 Display device and control method therefor
JP2019544890A JP7234121B2 (ja) 2017-04-10 2018-03-02 表示装置及びその制御方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710229236.6A CN106873284B (zh) 2017-04-10 2017-04-10 一种显示装置及其控制方法
CN201710229236.6 2017-04-10

Publications (1)

Publication Number Publication Date
WO2018188427A1 true WO2018188427A1 (zh) 2018-10-18

Family

ID=59161983

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/077891 WO2018188427A1 (zh) 2017-04-10 2018-03-02 显示装置及其控制方法

Country Status (5)

Country Link
US (1) US11106888B2 (zh)
EP (1) EP3611560B1 (zh)
JP (1) JP7234121B2 (zh)
CN (1) CN106873284B (zh)
WO (1) WO2018188427A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110278299A (zh) * 2019-06-24 2019-09-24 Oppo广东移动通信有限公司 显示装置、电子设备及图像获取方法

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106873284B (zh) * 2017-04-10 2019-10-29 京东方科技集团股份有限公司 一种显示装置及其控制方法
KR20190006374A (ko) * 2017-07-10 2019-01-18 삼성전자주식회사 복수의 수광 센서간의 간섭을 차단하기 위한 차광 부재를 포함하는 이미지 센서 및 이미지 센서를 포함하는 전자 장치
CN107819981A (zh) 2017-09-27 2018-03-20 京东方科技集团股份有限公司 成像背板、成像装置及电子设备
WO2019153219A1 (zh) * 2018-02-09 2019-08-15 深圳市为通博科技有限责任公司 光路调制器及其制作方法、指纹识别装置和终端设备
CN108520224B (zh) * 2018-04-02 2020-10-09 武汉天马微电子有限公司 一种显示面板及显示装置
CN109738505B (zh) * 2019-01-07 2020-07-28 重庆大学 基于介电电泳的阵列化液晶传感器
CN111126305A (zh) 2019-03-25 2020-05-08 神盾股份有限公司 指纹感测装置
CN109870845B (zh) * 2019-03-29 2021-11-19 厦门天马微电子有限公司 显示面板及显示装置
CN109993141B (zh) * 2019-04-10 2021-09-03 京东方科技集团股份有限公司 一种oled显示面板、指纹识别方法和显示装置
CN110046567B (zh) * 2019-04-11 2021-10-01 Oppo广东移动通信有限公司 显示屏组件及电子设备
CN110262102B (zh) * 2019-04-30 2022-01-14 厦门天马微电子有限公司 显示面板和显示装置
CN110348309B (zh) * 2019-06-11 2022-04-01 惠科股份有限公司 一种光学指纹感测器和显示屏
CN110187544B (zh) * 2019-06-28 2022-04-19 京东方科技集团股份有限公司 显示装置、液晶显示面板及其驱动方法
CN110287920B (zh) * 2019-06-29 2021-11-19 厦门天马微电子有限公司 一种显示面板及显示装置
CN110441944B (zh) * 2019-07-31 2022-02-08 上海天马微电子有限公司 显示面板及显示装置
CN110488519B (zh) * 2019-07-31 2021-02-12 华为技术有限公司 液晶显示装置、电子设备和电子设备的控制方法
US11417141B2 (en) 2019-08-14 2022-08-16 Beijing Xiaomi Mobile Software Co., Ltd., Nanjing Branch In-screen fingerprint identification apparatus and electronic device
WO2021042396A1 (zh) * 2019-09-06 2021-03-11 深圳市汇顶科技股份有限公司 指纹识别装置和电子设备
CN112484850B (zh) * 2019-09-11 2024-03-26 北京小米移动软件有限公司 光强检测模块、屏幕部件和移动终端
CN110618559B (zh) * 2019-09-20 2022-08-19 青岛海信移动通信技术股份有限公司 一种显示装置及其屏幕补光方法
CN110944073A (zh) * 2019-10-29 2020-03-31 武汉华星光电技术有限公司 屏下指纹识别装置及显示装置
CN110928011A (zh) * 2019-12-02 2020-03-27 武汉华星光电技术有限公司 Lcd显示装置、oled显示装置
CN111025740B (zh) * 2019-12-31 2022-05-27 厦门天马微电子有限公司 一种显示面板及显示装置
JP2021150837A (ja) * 2020-03-19 2021-09-27 株式会社リコー 固体撮像素子、画像読取装置、及び画像形成装置
CN111429797B (zh) * 2020-04-30 2023-02-03 京东方科技集团股份有限公司 一种显示装置及制作方法
CN111552109A (zh) * 2020-06-09 2020-08-18 京东方科技集团股份有限公司 一种显示模组及其驱动方法、显示装置
CN111638606B (zh) * 2020-06-11 2021-12-03 武汉华星光电技术有限公司 显示面板
CN114244927B (zh) * 2021-12-06 2024-04-19 维沃移动通信有限公司 电子设备、控制方法及控制装置
CN114624912A (zh) * 2022-03-22 2022-06-14 武汉华星光电技术有限公司 显示装置及其亮度调节方法
CN115079487B (zh) * 2022-06-15 2024-03-29 深圳中易健康科技有限公司 应用于舌像拍摄的自适应补光装置及方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100053118A1 (en) * 2008-09-04 2010-03-04 Au Optronics Corporation Display module
CN101762899A (zh) * 2008-12-25 2010-06-30 索尼株式会社 显示面板,模块和电子装置
CN104182727A (zh) * 2014-05-16 2014-12-03 深圳印象认知技术有限公司 超薄型指纹、掌纹采集装置及指纹、掌纹图像采集方法
CN105184248A (zh) * 2015-08-28 2015-12-23 京东方科技集团股份有限公司 一种指纹识别装置及指纹识别系统
CN105868742A (zh) * 2016-05-26 2016-08-17 京东方科技集团股份有限公司 显示组件和显示装置
CN106526944A (zh) * 2017-01-24 2017-03-22 京东方科技集团股份有限公司 显示基板及显示装置
CN106873284A (zh) * 2017-04-10 2017-06-20 京东方科技集团股份有限公司 一种显示装置及其控制方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050219200A1 (en) * 2004-03-31 2005-10-06 Weng Chien-Sen Fingerprint sensing pixel with a larger aperture
KR100674441B1 (ko) * 2004-11-25 2007-01-25 삼성전자주식회사 휴대용 무선단말기에서 지문인식을 이용한 문자 입력 장치및 방법
JP2008167154A (ja) 2006-12-28 2008-07-17 Sony Corp 撮像装置
US8463001B2 (en) * 2007-07-30 2013-06-11 Sony Corporation Image pickup apparatus
JP2010009584A (ja) * 2008-05-29 2010-01-14 Sony Corp 表示装置
KR101749266B1 (ko) * 2010-03-24 2017-07-04 삼성디스플레이 주식회사 터치감지 표시 장치 및 컴퓨터용 기록매체
JP5940252B2 (ja) * 2010-04-16 2016-06-29 株式会社半導体エネルギー研究所 表示装置
CN102967965B (zh) * 2012-11-08 2014-12-17 京东方科技集团股份有限公司 液晶狭缝光栅及立体显示装置
CN203838722U (zh) * 2014-04-04 2014-09-17 深圳印象认知技术有限公司 液晶终端设备及指纹采集器
CN204028936U (zh) * 2014-05-16 2014-12-17 深圳印象认知技术有限公司 超薄型指纹采集装置、可采集指纹的显示设备
CN106022324B (zh) * 2016-08-04 2019-04-30 京东方科技集团股份有限公司 一种纹路识别显示装置
CN206058224U (zh) * 2016-08-04 2017-03-29 京东方科技集团股份有限公司 一种纹路采集器及显示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100053118A1 (en) * 2008-09-04 2010-03-04 Au Optronics Corporation Display module
CN101762899A (zh) * 2008-12-25 2010-06-30 索尼株式会社 显示面板,模块和电子装置
CN104182727A (zh) * 2014-05-16 2014-12-03 深圳印象认知技术有限公司 超薄型指纹、掌纹采集装置及指纹、掌纹图像采集方法
CN105184248A (zh) * 2015-08-28 2015-12-23 京东方科技集团股份有限公司 一种指纹识别装置及指纹识别系统
CN105868742A (zh) * 2016-05-26 2016-08-17 京东方科技集团股份有限公司 显示组件和显示装置
CN106526944A (zh) * 2017-01-24 2017-03-22 京东方科技集团股份有限公司 显示基板及显示装置
CN106873284A (zh) * 2017-04-10 2017-06-20 京东方科技集团股份有限公司 一种显示装置及其控制方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3611560A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110278299A (zh) * 2019-06-24 2019-09-24 Oppo广东移动通信有限公司 显示装置、电子设备及图像获取方法

Also Published As

Publication number Publication date
EP3611560B1 (en) 2021-11-17
EP3611560A1 (en) 2020-02-19
CN106873284B (zh) 2019-10-29
CN106873284A (zh) 2017-06-20
JP7234121B2 (ja) 2023-03-07
US11106888B2 (en) 2021-08-31
JP2020516923A (ja) 2020-06-11
US20210027035A1 (en) 2021-01-28
EP3611560A4 (en) 2020-10-28

Similar Documents

Publication Publication Date Title
WO2018188427A1 (zh) 显示装置及其控制方法
CN110263773B (zh) 显示模组、显示装置及光栅膜材层的制作方法
US10664680B2 (en) Optical fingerprint recognition apparatus and display panel
US10664679B2 (en) Optical fingerprint identification display screen and display device
US8896576B2 (en) Touch panel, liquid crystal panel, liquid crystal display device, and touch panel-integrated liquid crystal display device
WO2018161541A1 (zh) 一种指纹识别显示装置及其驱动方法
US20200342195A1 (en) Collimator, Optical Fingerprint Recognizer, And Fullscreen
WO2018218980A1 (zh) 纹路检测装置及其纹路检测方法
CN110245631B (zh) 显示面板及指纹识别显示装置
US8916895B2 (en) Infrared light-emitting diode and touch screen
US10956702B2 (en) Apparatus for recognizing a fingerprint, and display device
US20220310701A1 (en) Display device and touch controller
TWI730519B (zh) 液晶顯示裝置
US20230215211A1 (en) Display Panel and Display Device
US11733572B2 (en) Image capturing apparatus
CN110955083B (zh) 显示装置
CN110221466B (zh) 显示面板和显示装置
TWM557387U (zh) 光學指紋檢測裝置
KR102542872B1 (ko) 지문 센싱 모듈 및 광학식 이미지 센서 내장형 표시장치
TWI723876B (zh) 顯示裝置
JPH11110537A (ja) 読取装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18784706

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019544890

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018784706

Country of ref document: EP

Effective date: 20191111