WO2021012428A1 - 显示面板及显示装置 - Google Patents

显示面板及显示装置 Download PDF

Info

Publication number
WO2021012428A1
WO2021012428A1 PCT/CN2019/111990 CN2019111990W WO2021012428A1 WO 2021012428 A1 WO2021012428 A1 WO 2021012428A1 CN 2019111990 W CN2019111990 W CN 2019111990W WO 2021012428 A1 WO2021012428 A1 WO 2021012428A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
display panel
glass substrate
light
fingerprint recognition
Prior art date
Application number
PCT/CN2019/111990
Other languages
English (en)
French (fr)
Inventor
胡丽
Original Assignee
武汉华星光电技术有限公司
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 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/632,126 priority Critical patent/US11373430B2/en
Publication of WO2021012428A1 publication Critical patent/WO2021012428A1/zh

Links

Classifications

    • 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
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13312—Circuits comprising photodetectors for purposes other than feedback
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion

Definitions

  • the present invention relates to the field of display technology, in particular to a display panel and a display device.
  • the fingerprint recognition sensor is usually placed in the menu button (home button) position. With the advent of full screens, the borders around the display are getting narrower and the home button is cancelled. Placing the fingerprint recognition sensor on the back or side of the phone has become an intermediate transition solution. Putting it under the display or in the screen will be a major development of fingerprint recognition. trend.
  • the fingerprint recognition sensor is usually placed under the display screen and can only be recognized in a fixed area.
  • the first defect is that the fingerprint module is placed under the display screen, which is separated from the display screen, occupying the space of the mobile phone module.
  • the battery and other components need to be designed for avoidance, and the module thickness is also thick;
  • the second defect is that the fingerprint can be recognized in a fixed area, and fingerprints
  • the sensor uses a silicon-based CMOS sensor.
  • the cost of silicon as a substrate is high, the CMOS manufacturing process is difficult, and it is difficult to achieve full-screen fingerprints.
  • the fingerprint identification unit is fabricated on the glass substrate of the display panel, and the display function/touch function/fingerprint recognition function can be integrated, cost and module thickness More optimized; and realized the fingerprint recognition area is a full-screen area, fingerprints can be recognized at any position on the screen. Further, by using a light shielding layer to provide a light-transmitting hole to form a collimator mechanism, the large-angle interference light is shielded to achieve a high signal-to-noise ratio, thereby improving the recognition accuracy of the fingerprint recognition unit.
  • one aspect of the present invention provides a display panel, which includes an array substrate, a liquid crystal layer, a color film layer, a sensor layer, and a glass substrate that are stacked.
  • the liquid crystal layer is located on the array substrate;
  • the color filter layer is located on the liquid crystal layer;
  • the sensor layer is located on the color filter layer, and the sensor layer includes a plurality of fingerprint recognition units ;
  • the glass substrate is located on the sensor layer.
  • the display panel further includes a collimator mechanism, which is arranged on a side of the sensor layer away from the color filter layer.
  • the collimator mechanism includes an upper light shielding layer, the upper light shielding layer is located on the side of the glass substrate away from the sensor layer, and the upper light shielding layer is provided at a position corresponding to the fingerprint recognition unit. Transparent mouth.
  • the collimator mechanism includes a lower light-shielding layer, the lower light-shielding layer is located between the glass substrate and the sensor layer, and the lower light-shielding layer is provided with a lower light-transmitting layer at a position corresponding to the fingerprint recognition unit. mouth.
  • a filter layer is further provided on the side of the fingerprint identification unit facing the glass substrate.
  • the color filter layer includes: a black matrix layer, a pixel unit arranged in the grid of the black matrix layer and penetrating the black matrix layer; the fingerprint recognition unit is arranged on the black matrix layer facing the glass One side of the substrate is located at the gap of the pixel unit.
  • each of the pixel units includes three sub-pixels arranged side by side; the length of the fingerprint identification unit is configured to be an integer multiple of the side-by-side length of the sub-pixels of the corresponding pixel unit.
  • the display panel further includes a lower polarizer and an upper polarizer arranged oppositely.
  • the lower polarizer is located on the side of the array substrate away from the glass substrate; the upper polarizer is located on the side of the glass substrate away from the array substrate.
  • the fingerprint identification unit includes a first electrode layer, a hole transport layer, a photosensitive layer, an electron transport layer, a second electrode layer, and a thin film transistor substrate that are stacked.
  • the first electrode layer is located on the black matrix layer;
  • the hole transport layer is located on the first electrode layer;
  • the photosensitive layer is located on the hole transport layer;
  • the electron transport The layer is located on the photosensitive layer;
  • the second electrode layer is located on the electron transport layer;
  • the thin film transistor substrate is located on the second electrode layer, and the thin film transistor substrate is connected to the glass substrate.
  • Another aspect of the present invention also provides a display device including the above-mentioned display panel.
  • the beneficial effects of the present invention include that the present invention provides a display panel and a display device.
  • the fingerprint recognition unit is fabricated on the glass substrate of the display panel, and the display function/touch function/fingerprint recognition function is integrated, cost and module thickness More optimized; and realized the fingerprint recognition area is a full-screen area, fingerprints can be recognized at any position on the screen.
  • the collimator mechanism is formed by using the light shielding layer and the light transmitting port to shield the large-angle interference light to achieve a high signal-to-noise ratio, thereby improving the recognition accuracy of the fingerprint recognition unit.
  • FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a plane structure of a display panel according to an embodiment of the present invention, which mainly reflects the positional relationship between the color film layer and the fingerprint recognition unit;
  • FIG. 3 is a schematic diagram of a planar structure of a display panel according to another embodiment of the present invention.
  • Figure 4 is a schematic structural diagram of a fingerprint identification unit according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of side binding of a glass substrate according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of side binding of an array substrate according to an embodiment of the present invention.
  • one embodiment of the present invention provides a display panel 100, which includes an array substrate 11, a liquid crystal layer 12, a color film layer 13, a sensor layer 14 and a glass substrate 16 which are stacked.
  • the liquid crystal layer 12 is located on the array substrate 11;
  • the color filter layer 13 is located on the liquid crystal layer 12;
  • the sensor layer 14 is located on the color filter layer 13, and the sensor layer 14 includes a plurality of fingerprint identification units 22;
  • the glass substrate 16 is located on the sensor layer 14.
  • the display panel further includes a collimator mechanism 10, which is disposed on the sensor layer 14, that is, the sensor layer 14 is on the side facing away from the color film layer 13 .
  • the fingerprint identification unit 22 includes an optical fingerprint sensor.
  • the collimator mechanism 10 includes an upper light-shielding layer 17, which is located on the glass substrate 16, that is, on the side of the glass substrate 16 away from the sensor layer 14
  • the upper light-shielding layer 17 is provided with an upper light-transmitting port 171 at a position corresponding to the fingerprint identification unit 22, and the upper light-transmitting port 171 constitutes a collimator.
  • the collimator mechanism 10 includes a lower light-shielding layer 15 located between the glass substrate 16 and the sensor layer 14, and the lower light-shielding layer 15 is provided at a position corresponding to the fingerprint recognition unit 22 There are lower light-transmitting ports 151, and the lower light-transmitting ports 151 correspondingly constitute collimators.
  • the collimator mechanism 10 includes the upper light-shielding layer 17 and the lower light-shielding layer 15 at the same time, the lower light-transmitting port 151 and the upper light-transmitting port 171 are arranged in one-to-one correspondence, and at this time, the upper light-transmitting port 171 Together with the lower light-transmitting port 151, a collimator of the fingerprint identification unit 22 is formed.
  • the collimators formed by the upper light-shielding layer 17 and the lower light-shielding layer 15 can further filter the light, so that the light originally distributed in a larger angle range only has the effective light in the smaller angle range into the corresponding
  • the photosensitive element further achieves a high signal-to-noise ratio by shielding large-angle interference light, which can avoid mechanical interference, reduce interference between adjacent pixel units, improve fingerprint recognition accuracy and better imaging.
  • the lower light shielding layer 15 and the upper light shielding layer 17 are made of materials with extremely low light transmittance, so that light can pass through the lower light transmission port 151 and the upper light transmission port 171, and the The parts other than the lower light transmission port 151 and the upper light transmission port 171 block light from passing through or absorbing large-angle strong noise light, thereby reducing crosstalk between different optical collimators.
  • the display panel 100 proposed by an embodiment of the present invention integrates the fingerprint recognition function
  • the fingerprint recognition unit 22 is arranged on the display panel 100
  • the display function/touch function/fingerprint recognition function is integrated.
  • the cost and module thickness are more optimized; and the fingerprint recognition area is a full-screen area, and fingerprints can be recognized at any position on the screen.
  • a light-shielding layer referring to the lower light-shielding layer 15 and the upper light-shielding layer 17 in the embodiment shown in FIG. 1 to open a light-transmitting port (the embodiment shown in FIG.
  • the above-mentioned light-transmitting port 171) constitutes a collimator, so that the light originally distributed in a larger angle range, only the effective light in a smaller angle range is injected into the corresponding photosensitive element, and the high angle is achieved by blocking the large-angle interference light.
  • the signal-to-noise ratio can avoid mechanical interference, reduce the interference between adjacent pixel units, and improve the recognition accuracy of the fingerprint recognition unit 22.
  • the fingerprint identification unit 22 is further provided with a filter layer (not shown) on the side facing the glass substrate 16.
  • the shape and size of the filter layer are similar to those of the The fingerprint identification unit 22 is compatible, and the filter layer is preferably arranged at the lower light transmission port 151, that is, on the same layer as the lower light shielding layer 15; of course, the filter layers can also be arranged separately or at the same time
  • the upper light-transmitting opening 171 is located on the same layer as the upper light-shielding layer 17.
  • the material of the filter layer includes a photoresist material, and the composition of the material is a pigment, a photocurable resin, an alkali-soluble resin, a photoinitiator, and the like.
  • the filter layer can accurately select the light waves of a certain wavelength range to be passed, and reflect other light waves of other wavelengths that are not desired to pass, so as to selectively provide only the same color (or the same wavelength) light to all the light waves.
  • the photodiode (PD) in the pixel of the fingerprint identification unit 22 improves the sharpness of the fingerprint sensing result of the fingerprint identification unit 22.
  • the photosensitive element is more sensitive to light in a certain wavelength range, that is, the photodiode (PD) has a higher quantum efficiency (EQE) at this wavelength, so the filter layer can be set to reduce the sensitivity of the photosensitive element to the wavelength range
  • the light is filtered out, leaving only the light in the sensitive band to reach the photosensitive element, thereby improving the sharpness of fingerprint recognition and detection.
  • the color filter layer 13 includes: a black matrix layer 131, a pixel unit 132 arranged in the grid of the black matrix layer 131 and penetrating the black matrix layer 131;
  • the fingerprint identification unit 22 is arranged on the side of the black matrix layer 131 facing the glass substrate 16 and located at the gap of the pixel unit 132.
  • each pixel unit 132 includes three sub-pixels arranged side by side, such as a red sub-pixel 1321, a green sub-pixel 1322, and a blue sub-pixel 1323. These three sub-pixels The pixel units 132 are arranged side by side.
  • the display panel 100 is formed with a plurality of pixel units 132, the pixel units 132 are arranged in an array, and the black matrix layer 131 is distributed among the pixel units 132.
  • the first black matrix stripes 1311 along the first direction D1 and the second black matrix stripes 1312 along the second direction D2 are arranged between the pixel units 132, and the first black matrix stripes 1312 along the first direction D1
  • the black matrix strips 1311 and the second black matrix strips 1312 along the second direction D2 are alternately arranged, wherein the first direction D1 is the side-by-side direction of the sub-pixels of the pixel unit 132, and the second direction D2 is The extension direction of the sub-pixels of the pixel unit 132 is described.
  • the first direction D1 is perpendicular to the extension direction of the sub-pixels of the pixel unit 132
  • the second direction D2 is parallel to the extension direction of the sub-pixels of the pixel unit 132.
  • the first black matrix stripes 1311 and the second black matrix stripes 1312 along the first direction D1 and the second direction D2 together form the black matrix layer 131.
  • the width of the first black matrix bars 1311 along the first direction D1 is greater than the width of the second black matrix bars 1312 along the second direction D2. Therefore, an embodiment of the present invention preferably disposes the fingerprint identification unit 22 in On the first black matrix bars 1311 along the first direction D1, the aperture ratio of the display panel 100 can be improved.
  • the fingerprint identification unit 22 may also be disposed on the first black matrix strip 1311 along the first direction D1 and the second black matrix strip 1312 along the second direction D2 at the same time. Above, it can increase the number of arrangement of the fingerprint identification unit 22, thereby improving the sensitivity of fingerprint identification.
  • the fingerprint identification units 22 are arranged at equal intervals.
  • the length of the fingerprint identification unit 22 is an integer multiple of the parallel length of the three sub-pixels 1321, 1322, 1323 of the pixel unit 132.
  • the concept of integer multiples is: 1, 2, 3... all integers.
  • the length of the fingerprint identification unit 22 is preferably one time of the side-by-side length of the three sub-pixels 1321, 1322, 1323 of the pixel unit 132, that is, the two have the same length.
  • the length of the fingerprint identification unit 22 may also preferably be twice the length of the three sub-pixels 1321, 1322, 1323 of the pixel unit 132 side by side. It should be understood that the length of the fingerprint identification unit 22 can be adjusted according to actual usage requirements, and even the fingerprint identification units 22 can be connected to each other to form a grid form, as long as they have a fingerprint identification function.
  • the display panel 100 further includes a lower polarizer 20 and an upper polarizer 21 arranged oppositely.
  • the lower polarizer 20 is located on the side of the array substrate 11 away from the glass substrate 16; the upper polarizer 21 is located on the side of the glass substrate 16 away from the array substrate 11.
  • the glass substrate 16 further includes an optical glue layer 18 and a protective layer 19.
  • the optical adhesive layer 18 is located on the glass substrate 16; the protective layer 19 is located on the optical adhesive layer 18.
  • the display panel 100 further includes a backlight source 30 located on the side of the array substrate 11 away from the glass substrate 16.
  • the backlight source 30 preferably adopts a Mini LED surface light source, which can improve the uniformity of light and solve the problem of the uniformity of the backlight of the fingerprint identification unit 22, thereby improving the imaging quality of the fingerprint identification unit 22, so that the acquired fingerprint image
  • the grayscale is uniform, and the utilization rate of the light source is higher and the energy consumption is lower.
  • the backlight source 30 may also have other structural forms. As long as it functions as a surface light source and can improve the uniformity of light, it falls within the protection scope of the present invention.
  • the light emitted by the backlight source 30 passes through the various layers of the display to reach the human finger, and reaches the fingerprint recognition unit 22 due to the difference in light intensity reflected by the ridges and valleys of the fingers.
  • the received light intensity is different, which is converted into different electric signals, and finally realizes fingerprint recognition.
  • the collimator mechanism 10 is used to collect the light returned by the fingerprint and separate the light from different positions on the top, and the light reflected from the finger is directed toward the fingerprint sensor to narrow or focus.
  • Each collimator of the collimator mechanism 10 is configured to perform spatial filtering by transmitting light in a direction along or close to the axis of the collimator mechanism 10, while blocking light in other directions;
  • the light originally distributed in a larger angular range enters the fingerprint identification unit 22 in a smaller angular range, thereby avoiding interference of the light and reducing interference between adjacent pixel units.
  • the fingerprint identification unit 22 includes a first electrode layer 221, a hole transport layer 222, a photosensitive layer 223, an electron transport layer 224, a second electrode layer 225, and a thin film which are stacked.
  • Transistor substrate 226 Specifically, the first electrode layer 221 is located on the black matrix layer 131; the hole transport layer 222 is located on the first electrode layer 221; the photosensitive layer 223 is located on the hole transport layer 222 The electron transport layer 224 is located on the photosensitive layer 223; the second electrode layer 225 is located on the electron transport layer 224; the thin film transistor substrate 226 is located on the second electrode layer 225, the The thin film transistor substrate 226 is connected to the glass substrate 16.
  • the present invention also provides a display device including the above-mentioned display panel 100.
  • the display device of the present invention integrates the fingerprint recognition function and integrates the fingerprint recognition unit 22 on the display panel 100 of the display device.
  • the display function/touch function/fingerprint recognition function is integrated on the glass substrate 16 of the display panel 100 Integrated, the cost and module thickness are more optimized; and the fingerprint recognition area is a full-screen area, and fingerprints can be recognized at any position on the screen.
  • light-shielding layers referring to the lower light-shielding layer 15 and the upper light-shielding layer 17 in the foregoing embodiment
  • open light-transmitting ports in the foregoing embodiment, the lower light-transmitting port 151 and the upper light-transmitting port 171)
  • Form a collimator so that the light originally distributed in a larger angle range, only the effective light in a smaller angle range enters the corresponding photosensitive element, and a high signal-to-noise ratio is achieved by blocking the large-angle interference light, which can avoid
  • the mechanism interference reduces the interference between adjacent pixel units, thereby improving the recognition accuracy of the fingerprint recognition unit 22.
  • the display device in the embodiment of the present disclosure may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.
  • FIGS 5 and 6 are schematic diagrams of binding on the display device side.
  • the fingerprint application specific integrated circuit 41 (ASIC) of the glass substrate 16 is bound by a chip on a flexible circuit board 42 (COF).
  • the touch and display integrated circuit 43 (TDDI IC) of the array substrate 11 adopts glass (referring to the array substrate 11) on chip (COG) or chip on flexible circuit board (COF). Form binding (only the COG method is shown in the figure), so that the boundary of the lower frame does not need to be added.
  • the advantages of the present invention include that the present invention provides a display panel and a display device.
  • the fingerprint recognition unit is fabricated on the glass substrate of the display panel, and the display function/touch function/fingerprint recognition function is integrated.
  • the cost and module thickness are higher. Optimization; and realized that the fingerprint recognition area is a full-screen area, fingerprints can be recognized at any position on the screen.
  • the collimator is formed by opening a light-transmitting port with a light-shielding layer, so that the light originally distributed in a larger angle range, only the effective light in a smaller angle range enters the corresponding photosensitive element, which is achieved by blocking the large-angle interference light
  • a high signal-to-noise ratio mechanism interference can be avoided, interference between adjacent pixel units is reduced, and the recognition accuracy of the fingerprint recognition unit is improved.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
  • Image Input (AREA)

Abstract

一种显示面板及显示装置，涉及显示技术领域。显示面板包括层叠设置的阵列基板(11)、液晶层(12)、彩膜层(13)、传感器层(14)、玻璃基板(16)以及准直器机构(10)。传感器层(14)包括多个指纹识别单元(22)；准直器机构(10)设于传感器层(14)背离彩膜层(13)的一侧。显示装置包括显示面板。指纹识别单元(22)集成制作在显示面板的玻璃基板(16)上将显示功能/触控功能/指纹识别功能集成于一体，成本和模组厚度更优化；并且实现了指纹识别区域为全屏区域，在屏幕任意位置均能识别指纹。

Description

显示面板及显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种显示面板及显示装置。
 背景技术
现有显示装置如智能手机等，指纹识别传感器通常放置在菜单键（home键）位置。随着全面屏的到来，显示屏四周边框越来越窄以及home键的取消，手机背面或者侧面放置指纹识别传感器成为中间过渡方案，置于显示屏下或者屏内将是指纹识别发展的一大趋势。
现有显示装置如智能手机等，指纹识别传感器通常放置在显示屏下面，且在固定区域才能识别。缺陷一是指纹模组放置在显示屏下面，与显示屏分开，占用手机模组空间，电池等元器件需要做避让设计，模组厚度也较厚；缺陷二是固定区域才能识别指纹，且指纹传感器采用的是硅基CMOS传感器，硅作为基板的成本高，CMOS制作工艺难度高，难以实现全屏指纹。
因此，亟需提出一种新的显示面板及显示装置，以解决上述技术问题。
 技术问题
本发明的一个方面目的在于提供一种显示面板及显示装置，将指纹识别单元制作在显示面板的玻璃基板上，能够将显示功能/触控功能/指纹识别功能集成于一体，成本和模组厚度更优化；并且实现了指纹识别区域为全屏区域，在屏幕任意位置均能识别指纹。进一步的，通过采用遮光层设置透光孔构成准直器机构，来遮挡大角度干扰光实现了高信噪比，从而提高了指纹识别单元的识别精度。
 技术解决方案
为了解决上述问题，本发明一个方面提供一种显示面板，包括层叠设置的阵列基板、液晶层、彩膜层、传感器层以及玻璃基板。具体地讲，所述液晶层，位于所述阵列基板上；所述彩膜层位于所述液晶层上；所述传感器层位于所述彩膜层上，所述传感器层包括多个指纹识别单元；所述玻璃基板位于所述传感器层上。
进一步地，所述显示面板还包括准直器机构，设于所述传感器层背离所述彩膜层的一侧。
进一步地，所述准直器机构包括上遮光层，所述上遮光层位于所述玻璃基板背离所述传感器层的一侧，在所述上遮光层对应所述指纹识别单元的位置设有上透光口。
进一步地，所述准直器机构包括下遮光层，所述下遮光层位于所述玻璃基板和所述传感器层之间，所述下遮光层对应所述指纹识别单元的位置设有下透光口。
进一步的，其中所述指纹识别单元朝向所述玻璃基板的一侧还设有滤光层。
进一步的，其中所述彩膜层包括：黑色矩阵层、设置在黑色矩阵层的网格内且穿透黑色矩阵层的像素单元；所述指纹识别单元设置在所述黑色矩阵层朝向所述玻璃基板的一侧且位于所述像素单元的间隙处。
进一步的，其中每一所述像素单元均包括三个并排设置的子像素；所述指纹识别单元的长度被构造为对应的所述像素单元的子像素并排长度的整数倍。
进一步的，其中所述显示面板还包括相对设置的下偏光片和上偏光片。具体地讲，所述下偏光片位于所述阵列基板远离所述玻璃基板一侧；所述上偏光片位于所述玻璃基板远离所述阵列基板一侧。
进一步的，其中所述指纹识别单元包括层叠设置的第一电极层、空穴传输层、感光层、电子传输层、第二电极层和薄膜晶体管基板。具体地讲，所述第一电极层位于所述黑色矩阵层上；所述空穴传输层位于所述第一电极层上；所述感光层位于所述空穴传输层上；所述电子传输层位于所述感光层上；所述第二电极层位于所述电子传输层上；所述薄膜晶体管基板位于所述第二电极层上，所述薄膜晶体管基板与所述玻璃基板连接。
本发明另一方面还提供一种显示装置，包括以上所述的显示面板。
 有益效果
本发明的有益效果包括，本发明提供一种显示面板及显示装置，将指纹识别单元制作在显示面板的玻璃基板上将显示功能/触控功能/指纹识别功能集成于一体，成本和模组厚度更优化；并且实现了指纹识别区域为全屏区域，在屏幕任意位置均能识别指纹。进一步的，通过采用遮光层设透光口构成准直器机构，来遮挡大角度干扰光实现了高信噪比，从而提高了指纹识别单元的识别精度。
 附图说明
图1为本发明一个实施例的显示面板的结构示意图；
图2为本发明一个实施例的显示面板的平面结构示意图，主要体现彩膜层和指纹识别单元的位置关系；
图3为本发明另一个实施例的显示面板的平面结构示意图；
图4为本发明一个实施例的指纹识别单元的结构示意图；
图5为本发明一个实施例的玻璃基板侧绑定示意图；
图6为本发明一个实施例的阵列基板侧绑定示意图。
其中附图标记说明如下：
10、准直器机构，11、阵列基板，12、液晶层，13、彩膜层，
14、传感器层，15、下遮光层，16、玻璃基板，17、上遮光层，
18、光学胶层，19、保护层，20、下偏光片，21、上偏光片，
22、指纹识别单元，30、背光源，41、指纹专用集成电路，
42、柔性电路板，43、触控和显示集成电路，100、显示面板，
131、黑色矩阵层，132、像素单元，151、下透光口，171、上透光口，
221、第一电极层，222、空穴传输层，223、感光层，
224、电子传输层，225、第二电极层，226、薄膜晶体管基板，
1311、第一黑色矩阵条，1312、第二黑色矩阵条，1321、红色子像素，
1322、绿色子像素，1323、蓝色子像素。
 本发明的实施方式
以下实施例是参考所列附图示例性地对本发明技术方案的实施方式进行说明。实施例中所提到的方向用语，例如上、下、前、后、左、右、内、外、侧等，仅是参考附图的方向；实施例提到的元件名称，例如第一、第二等，仅是区分不同的元部件，以便更好的表达和理解，不应将其视为对本发明技术方案的限制性解释。在图中，结构相同或相似的单元、部件以相同标号表示。
本文将参照附图来详细描述本发明的实施例。本发明可以表现为许多不同形式，本发明不应仅被解释为本文阐述的具体实施例。本发明提供这些实施例是为了解释本发明的实际应用，从而使本领域其他技术人员能够理解本发明的技术方案和适合于特定预期应用的各种修改方案。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，应当基于具体情况来理解这些术语在本发明中的具体含义。
如图1所示，本发明一个实施例提供了一种显示面板100，其包括层叠设置的阵列基板11、液晶层12、彩膜层13、传感器层14以及玻璃基板16。具体地讲，所述液晶层12，位于所述阵列基板11上；所述彩膜层13位于所述液晶层12上；所述传感器层14位于所述彩膜层13上，所述传感器层14包括多个指纹识别单元22；所述玻璃基板16位于所述传感器层14上。
如图1所示，所述显示面板还包括准直器机构10，所述准直器机构10设于所述传感器层14上，即所述传感器层14背离所述彩膜层13的一侧。其中所述指纹识别单元22包括光学指纹传感器。
如图1所示，所述准直器机构10包括上遮光层17，所述上遮光层17位于所述玻璃基板16上，即所述玻璃基板16背离所述传感器层14的一侧，在所述上遮光层17对应所述指纹识别单元22的位置设有上透光口171，所述上透光口171构成一个个准直器。
所述准直器机构10包括下遮光层15，所述下遮光层15位于所述玻璃基板16和所述传感器层14之间，所述下遮光层15对应所述指纹识别单元22的位置设有下透光口151，所述下透光口151对应地构成一个个准直器。
当所述准直器机构10同时包括上遮光层17和下遮光层15时，所述下透光口151与所述上透光口171一一对应设置，此时所述上透光口171和所述下透光口151共同构成所述指纹识别单元22的准直器。所述上遮光层17和所述下遮光层15所形成的一个个准直器可对光线进一步筛选，使原本分布在较大角度范围的光线只有较小角度范围内的有效光射入对应的感光元件，进一步通过遮挡大角度干扰光来实现高信噪比，可以避免机构干涉，减小相邻像素单元之间的干扰，提高指纹识别精度以及更好地成像。
并且，所述下遮光层15和所述上遮光层17采用透光率极低的材料制作，使得光线可以从所述下透光口151和所述上透光口171透过，而所述下透光口151与所述上透光口171以外的部分则阻挡光线透过或吸收大角度的强噪声光，从而减少不同光学准直器之间的串扰。
如图1所示，本发明一个实施例提出的显示面板100通过集成指纹识别功能，将指纹识别单元22设置在所述显示面板100上，将显示功能/触控功能/指纹识别功能集成于一体，成本和模组厚度更优化；并且实现了指纹识别区域为全屏区域，在屏幕任意位置均能识别指纹。进一步的，通过采用遮光层（图1所示实施例中指所述下遮光层15和所述上遮光层17）开设透光口（图1所示实施例中指所述下透光口151和所述上透光口171）构成一个个准直器，使原本分布在较大角度范围的光线，只有较小角度范围内的有效光射入对应的感光元件，通过遮挡大角度干扰光实现了高信噪比，可以避免机构干涉，减小了相邻像素单元之间的干扰，从而提高了指纹识别单元22的识别精度。
如图1所示，本实施例中，所述指纹识别单元22朝向所述玻璃基板16的一侧还设有滤光层（未图示），所述滤光层的形状和尺寸与所述指纹识别单元22相适配，优选所述滤光层设置在所述下透光口151处，即与所述下遮光层15位于同一层；当然，所述滤光层也可单独或同时设置在所述上透光口171处，即与所述上遮光层17位于同一层。所述滤光层的材质包括光阻材料，材料的成分为颜料、光固化树脂、碱可溶性树脂、光引发剂等。所述滤光层能够精确的选择欲通过的某段波长范围的光波，而反射掉其它不希望通过的其他波段的光波，来选择性地仅将相同颜色(或相同波长)的光提供给所述指纹识别单元22像素中的光电二极管（PD），从而提高了所述指纹识别单元22指纹感测结果的锐度。这是因为感光元件对某段波长范围的光比较敏锐，即光电二极管（PD）在这一段波长的量子效率（EQE）较高，所以设置所述滤光层可以将感光元件不敏感的波长范围的光滤掉，只留下敏感波段的光到达感光元件，以此来提高指纹识别检测的锐度。
如图2、图3所示，本实施例中，所述彩膜层13包括：黑色矩阵层131、设置在黑色矩阵层131的网格内且穿透黑色矩阵层131的像素单元132；所述指纹识别单元22设置在所述黑色矩阵层131朝向所述玻璃基板16的一侧且位于所述像素单元132的间隙处。
如图2、图3所示，本实施例中，每一像素单元132均包括三个并排设置的子像素，例如红色子像素1321、绿色子像素1322、蓝色子像素1323，这三个子像素并排设置构成像素单元132。
如图2、图3所示，所述显示面板100形成有多个像素单元132，所述像素单元132呈阵列式排布，所述黑色矩阵层131分布于所述像素单元132之间。具体来讲，在所述像素单元132之间设置沿第一方向D1的第一黑色矩阵条1311和与沿第二方向D2的第二黑色矩阵条1312，所述沿第一方向D1的第一黑色矩阵条1311与所述沿第二方向D2的第二黑色矩阵条1312交错设置，其中所述第一方向D1为所述像素单元132的子像素的并排方向，所述第二方向D2为所述像素单元132的子像素的延伸方向。换句话讲，所述第一方向D1与所述像素单元132的子像素延伸方向垂直，所述第二方向D2与所述像素单元132的子像素延伸方向平行。沿所述第一方向D1和沿所述第二方向D2的所述第一黑色矩阵条1311和第二黑色矩阵条1312共同形成所述黑色矩阵层131。沿所述第一方向D1的第一黑色矩阵条1311的宽度大于沿所述第二方向D2的第二黑色矩阵条1312的宽度，因此本发明一个实施例优选将所述指纹识别单元22设置于沿所述第一方向D1的第一黑色矩阵条1311上，这样可以提高所述显示面板100的开口率。
应当理解，在其他实施例中，所述指纹识别单元22也可同时设置于沿所述第一方向D1的第一黑色矩阵条1311上以及沿所述第二方向D2的第二黑色矩阵条1312上，其可增加所述指纹识别单元22的排布数量，从而能够提高指纹识别的灵敏度。
如图2、图3所示，本实施例中，所述指纹识别单元22等距离间隔排布。所述指纹识别单元22的长度为所述像素单元132的三个子像素1321、1322、1323的并排长度的整数倍。其中整数倍的概念为：1、2、3……等所有整数。如图2所示，所述指纹识别单元22的长度优选为所述像素单元132的三个子像素1321、1322、1323的并排长度的一倍，即二者等长。如图3所示，所述指纹识别单元22的长度也可优选为所述像素单元132的三个子像素1321、1322、1323并排长度的两倍。应当理解，所述指纹识别单元22的长度可根据实际使用需求进行调整，甚至所述指纹识别单元22也可相互连接形成网格形式，只要具有指纹识别功能即可。
如图1所示，本实施例中，所述显示面板100还包括相对设置的下偏光片20和上偏光片21。具体地讲，所述下偏光片20位于所述阵列基板11远离所述玻璃基板16一侧；所述上偏光片21位于所述玻璃基板16远离所述阵列基板11一侧。
如图1所示，本实施例中，所述玻璃基板16还包括光学胶层18和保护层19。具体地讲，所述光学胶层18，位于所述玻璃基板16上；所述保护层19位于所述光学胶层18上。
如图1所示，本实施例中，所述显示面板100还包括位于所述阵列基板11远离所述玻璃基板16一侧的背光源30。所述背光源30优选采用Mini LED面光源，能够提高光线的均匀性，解决了所述指纹识别单元22背光均匀性的问题，从而提高所述指纹识别单元22的成像质量，使得获取的指纹图像的灰度均匀，且光源的利用率更高、能耗更低。所述背光源30还可以为其他结构形式，只要起到面光源的作用能够提高光线的均匀性，其均属于本发明的保护范围。
在使用时，当手指触摸所述显示面板100时，所述背光源30发出的光穿过显示器各层到达人的手指，由于手指脊和谷反射的光强差异，到达所述指纹识别单元22处接收到的光强有差异，从而转化成不同的电信号，最终实现指纹识别。所述准直器机构10用于收集指纹返回的光，并且分离来自该顶部不同位置的光，将从手指反射的光指向指纹感光元件变窄或聚焦。所述准直器机构10的每一个准直器被构造成通过在沿着或接近所述准直器机构10的轴的方向传输光，同时阻挡其他方向的光，来进行空间过滤；同时使原本分布在较大角度范围的光线以较小的角度范围射入所述指纹识别单元22，从而避免光线受到干涉以及减小相邻像素单元之间的干扰。
如图4所示，在一个实施例中，所述指纹识别单元22包括层叠设置的第一电极层221、空穴传输层222、感光层223、电子传输层224、第二电极层225和薄膜晶体管基板226。具体地讲，所述第一电极层221位于所述黑色矩阵层131上；所述空穴传输层222位于所述第一电极层221上；所述感光层223位于所述空穴传输层222上；所述电子传输层224位于所述感光层223上；所述第二电极层225位于所述电子传输层224上；所述薄膜晶体管基板226位于所述第二电极层225上，所述薄膜晶体管基板226与所述玻璃基板16连接。
本发明还提供一种显示装置，包括以上所述的显示面板100。
本发明显示装置通过集成指纹识别功能，将指纹识别单元22集成设置在显示装置的显示面板100上，具体的在显示面板100的玻璃基板16上将显示功能/触控功能/指纹识别功能集成于一体，成本和模组厚度更优化；并且实现了指纹识别区域为全屏区域，在屏幕任意位置均能识别指纹。进一步的，通过采用遮光层（前述实施例中指所述下遮光层15和所述上遮光层17）开设透光口（前述实施例中指所述下透光口151和所述上透光口171）构成一个个准直器，使原本分布在较大角度范围的光线，只有较小角度范围内的有效光射入对应的感光元件，通过遮挡大角度干扰光实现了高信噪比，可以避免机构干涉，减小了相邻像素单元之间的干扰，从而提高了指纹识别单元22的识别精度。
本公开实施例中的显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
如图5、图6所示，为所述显示装置侧绑定示意图。如图5所示，所述玻璃基板16的指纹专用集成电路41(ASIC)采用柔性电路板42上贴芯片（COF）的方式绑定。如图6所示，所述阵列基板11的触控和显示集成电路43（TDDI IC）采用玻璃（指所述阵列基板11）上贴芯片（COG）或柔性电路板上贴芯片（COF）的形式绑定（图中仅示意出COG的方式），从而下边框的边界不需要额外增加。
本发明的优点包括，本发明提供一种显示面板及显示装置，将指纹识别单元制作在显示面板的玻璃基板上将显示功能/触控功能/指纹识别功能集成于一体，成本和模组厚度更优化；并且实现了指纹识别区域为全屏区域，在屏幕任意位置均能识别指纹。进一步的，通过采用遮光层开设透光口构成准直器，使原本分布在较大角度范围的光线，只有较小角度范围内的有效光射入对应的感光元件，通过遮挡大角度干扰光实现了高信噪比，可以避免机构干涉，减小了相邻像素单元之间的干扰，从而提高了指纹识别单元的识别精度。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (11)

  1. 一种显示面板，其包括：
    阵列基板；
    液晶层，位于所述阵列基板上；
    彩膜层，位于所述液晶层上；
    传感器层，位于所述彩膜层上，所述传感器层包括多个指纹识别单元；以及
    玻璃基板，位于所述传感器层上。
  2. 如权利要求1所述的显示面板，其中，还包括：
    准直器机构，设于所述传感器层背离所述彩膜层的一侧。
  3. 如权利要求2所述的显示面板，其中，所述准直器机构包括上遮光层，位于所述玻璃基板背离所述传感器层的一侧；在所述上遮光层对应所述指纹识别单元的位置设有上透光口。
  4. 如权利要求2所述的显示面板，其中，所述准直器机构包括下遮光层，位于所述玻璃基板和所述传感器层之间；所述下遮光层对应所述指纹识别单元的位置设有下透光口。
  5. 如权利要求3所述的显示面板，其中，所述准直器机构包括下遮光层，位于所述玻璃基板和所述传感器层之间；所述下遮光层对应所述指纹识别单元的位置设有下透光口。
  6. 如权利要求1所述的显示面板，其中，所述指纹识别单元靠近所述玻璃基板的一侧还设有滤光层。
  7. 如权利要求1所述的显示面板，其中，所述彩膜层包括：黑色矩阵层、设置在黑色矩阵层的网格内且穿透黑色矩阵层的像素单元；
    所述指纹识别单元设置在所述黑色矩阵层朝向所述玻璃基板的一侧且位于所述像素单元的间隙处。
  8. 如权利要求5所述的显示面板，其中，
    每一所述像素单元均包括三个并排设置的子像素；
    所述指纹识别单元的长度被构造为对应的所述像素单元的三个子像素并排长度的整数倍。
  9. 如权利要求1所述的显示面板，其中，还包括：
    下偏光片，位于所述阵列基板远离所述玻璃基板一侧；以及
    上偏光片，位于所述玻璃基板远离所述阵列基板一侧。
  10. 如权利要求1所述的显示面板，其中，所述指纹识别单元包括：
    第一电极层，位于所述黑色矩阵层上；
    空穴传输层，位于所述第一电极层上；
    感光层，位于所述空穴传输层上；
    电子传输层，位于所述感光层上；
    第二电极层，位于所述电子传输层上；以及
    薄膜晶体管基板，位于所述第二电极层上。
  11. 一种显示装置，其包括如权利要求1所述的显示面板。
PCT/CN2019/111990 2019-07-23 2019-10-18 显示面板及显示装置 WO2021012428A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/632,126 US11373430B2 (en) 2019-07-23 2019-10-18 Display panel and display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910665346.6A CN110426888A (zh) 2019-07-23 2019-07-23 显示面板及显示装置
CN201910665346.6 2019-07-23

Publications (1)

Publication Number Publication Date
WO2021012428A1 true WO2021012428A1 (zh) 2021-01-28

Family

ID=68411899

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/111990 WO2021012428A1 (zh) 2019-07-23 2019-10-18 显示面板及显示装置

Country Status (3)

Country Link
US (1) US11373430B2 (zh)
CN (1) CN110426888A (zh)
WO (1) WO2021012428A1 (zh)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110543847B (zh) * 2019-08-29 2021-04-02 维沃移动通信有限公司 显示模组及电子设备
CN111222403B (zh) * 2019-11-15 2024-03-08 京东方科技集团股份有限公司 一种纹路识别装置及其控制方法
CN110941117B (zh) * 2019-11-28 2021-09-03 武汉华星光电技术有限公司 一种显示面板及电子装置
CN111308768B (zh) * 2019-11-29 2023-02-07 武汉华星光电技术有限公司 显示面板及显示装置
US11429001B2 (en) 2019-12-13 2022-08-30 Wuhan China Star Optoelectronics Technology Co., Ltd. Liquid crystal display panel and liquid crystal display device
CN110955356B (zh) * 2019-12-13 2023-10-17 武汉华星光电技术有限公司 显示装置
CN110928032B (zh) * 2019-12-13 2021-09-24 武汉华星光电技术有限公司 液晶显示面板及液晶显示装置
CN111061089B (zh) * 2019-12-13 2021-04-27 武汉华星光电技术有限公司 一种显示装置
CN113641049B (zh) * 2020-04-27 2023-10-13 京东方科技集团股份有限公司 一种阵列基板、其驱动方法、显示面板及显示装置
CN111781755A (zh) * 2020-05-28 2020-10-16 华为技术有限公司 液晶显示屏及电子设备
CN111624780A (zh) * 2020-05-28 2020-09-04 武汉华星光电技术有限公司 准直器结构、显示装置及显示装置的制作方法
CN111638627A (zh) * 2020-06-01 2020-09-08 吉林求是光谱数据科技有限公司 屏下指纹识别用像素级彩色滤光膜芯片制作方法
CN111766971A (zh) * 2020-06-09 2020-10-13 武汉华星光电半导体显示技术有限公司 触控显示屏
CN111650772B (zh) * 2020-06-24 2023-05-23 京东方科技集团股份有限公司 彩膜基板和指纹识别显示装置
CN111708202B (zh) * 2020-07-17 2023-12-01 京东方科技集团股份有限公司 一种显示面板和显示装置
KR20220019123A (ko) * 2020-08-06 2022-02-16 삼성디스플레이 주식회사 지문 센서, 지문 센서의 제조 방법, 및 지문 센서를 포함한 표시 장치
CN112510076A (zh) * 2020-12-21 2021-03-16 深圳扑浪创新科技有限公司 一种量子点显示装置及其应用
US11519801B1 (en) * 2021-06-04 2022-12-06 Synaptics Incorporated Sensor device for transcapacitive sensing with shielding
US11816919B2 (en) * 2021-06-04 2023-11-14 Synaptics Incorporated Sensor device for transcapacitive sensing with shielding

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205068352U (zh) * 2014-10-03 2016-03-02 速博思股份有限公司 兼具指纹辨识与触控侦测的显示设备
US20160334664A1 (en) * 2015-05-11 2016-11-17 Pebble Technology Corp. Liquid crystal display device with sub-pixel zones for indoor and outdoor use
CN106529513A (zh) * 2016-12-20 2017-03-22 北京小米移动软件有限公司 彩膜基板、显示模组和电子设备
CN109375412A (zh) * 2018-11-30 2019-02-22 武汉华星光电技术有限公司 液晶显示面板及液晶显示装置
CN109445161A (zh) * 2018-12-27 2019-03-08 厦门天马微电子有限公司 显示面板和显示装置
CN109521590A (zh) * 2018-12-14 2019-03-26 厦门天马微电子有限公司 显示装置和显示装置的制作方法
CN109934051A (zh) * 2017-12-15 2019-06-25 南昌欧菲光科技有限公司 指纹识别和触控感应组件、显示组件与终端设备

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101364155B (zh) * 2007-08-08 2010-10-13 广达电脑股份有限公司 具有指纹辨识功能的触控式面板及电子装置
US7663380B2 (en) * 2007-12-06 2010-02-16 Himax Technologies Limited Capacitive fingerprint sensor and the panel thereof
KR20160056759A (ko) * 2014-11-12 2016-05-20 크루셜텍 (주) 이미지 스캔이 가능한 플렉서블 디스플레이 장치 및 이의 구동 방법
US10049257B2 (en) * 2015-07-09 2018-08-14 Gingy Technology Inc. Fingerprint identification module
CN105678255B (zh) 2016-01-04 2019-01-08 京东方科技集团股份有限公司 一种光学式指纹识别显示屏及显示装置
CN106055162B (zh) * 2016-06-30 2019-05-03 京东方科技集团股份有限公司 显示组件和显示装置
CN206179868U (zh) * 2016-09-30 2017-05-17 京东方科技集团股份有限公司 触控面板及显示装置
CN206401320U (zh) * 2016-11-28 2017-08-11 南昌欧菲生物识别技术有限公司 有机发光二极管显示屏指纹识别装置及电子设备
CN106773219B (zh) * 2017-02-07 2019-11-05 京东方科技集团股份有限公司 一种显示装置
CN106940488B (zh) * 2017-04-27 2019-07-12 上海天马微电子有限公司 显示面板及显示装置
CN107133613B (zh) 2017-06-06 2020-06-30 上海天马微电子有限公司 一种显示面板及显示装置
KR102489337B1 (ko) * 2018-01-17 2023-01-19 삼성디스플레이 주식회사 디스플레이 장치
CN108415188B (zh) * 2018-05-02 2021-11-16 上海中航光电子有限公司 一种液晶显示面板、显示装置及其指纹解锁方法
CN109215604B (zh) * 2018-11-07 2021-01-26 京东方科技集团股份有限公司 显示装置及其纹路识别方法、实现该方法的产品、纹路识别器件

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205068352U (zh) * 2014-10-03 2016-03-02 速博思股份有限公司 兼具指纹辨识与触控侦测的显示设备
US20160334664A1 (en) * 2015-05-11 2016-11-17 Pebble Technology Corp. Liquid crystal display device with sub-pixel zones for indoor and outdoor use
CN106529513A (zh) * 2016-12-20 2017-03-22 北京小米移动软件有限公司 彩膜基板、显示模组和电子设备
CN109934051A (zh) * 2017-12-15 2019-06-25 南昌欧菲光科技有限公司 指纹识别和触控感应组件、显示组件与终端设备
CN109375412A (zh) * 2018-11-30 2019-02-22 武汉华星光电技术有限公司 液晶显示面板及液晶显示装置
CN109521590A (zh) * 2018-12-14 2019-03-26 厦门天马微电子有限公司 显示装置和显示装置的制作方法
CN109445161A (zh) * 2018-12-27 2019-03-08 厦门天马微电子有限公司 显示面板和显示装置

Also Published As

Publication number Publication date
US20210406503A1 (en) 2021-12-30
CN110426888A (zh) 2019-11-08
US11373430B2 (en) 2022-06-28

Similar Documents

Publication Publication Date Title
WO2021012428A1 (zh) 显示面板及显示装置
TWI719738B (zh) 顯示面板及顯示裝置
US10969613B1 (en) Fingerprint identification display device and driving method thereof
KR101495918B1 (ko) 디스플레이 장치
US8896576B2 (en) Touch panel, liquid crystal panel, liquid crystal display device, and touch panel-integrated liquid crystal display device
TWI399582B (zh) 液晶顯示裝置
KR102151502B1 (ko) 액정 표시 장치, 컬러 필터 기판 및 컬러 필터 기판 제조 방법
JP5910796B2 (ja) 液晶表示装置
WO2020220513A1 (zh) 显示面板及显示装置
WO2021017194A1 (zh) 显示面板及显示装置
CN107703670B (zh) 一种显示面板和显示装置
WO2021108968A1 (zh) 屏下光学指纹识别装置及系统、液晶显示屏
WO2021051710A1 (zh) 指纹感测模块与电子装置
WO2021249178A1 (zh) 显示面板和显示装置
CN114740994A (zh) 显示屏和显示装置
WO2021204093A1 (zh) 一种显示屏和电子设备
WO2024082942A1 (zh) 环境光传感器和电子设备
US20230105947A1 (en) Display screen and electronic device
WO2020233601A1 (zh) 成像层、成像装置、电子设备、波带片结构及感光像元
JP2009151033A (ja) 表示装置
CN112666737B (zh) 液晶显示面板
JP5256705B2 (ja) 電気光学装置及び電子機器
CN110928022B (zh) 液晶盒和液晶显示屏
WO2022188161A1 (zh) 显示面板及显示装置
US20210406507A1 (en) Under-screen fingerprint identification device, display panel, and display device

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: 19938239

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19938239

Country of ref document: EP

Kind code of ref document: A1