WO2020253502A1 - 显示面板及显示装置 - Google Patents
显示面板及显示装置 Download PDFInfo
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- WO2020253502A1 WO2020253502A1 PCT/CN2020/093393 CN2020093393W WO2020253502A1 WO 2020253502 A1 WO2020253502 A1 WO 2020253502A1 CN 2020093393 W CN2020093393 W CN 2020093393W WO 2020253502 A1 WO2020253502 A1 WO 2020253502A1
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- light
- display panel
- layer
- light conversion
- display
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/141—Control of illumination
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/147—Details of sensors, e.g. sensor lenses
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/19—Sensors therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/193—Preprocessing; Feature extraction
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
-
- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/197—Matching; Classification
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
Definitions
- the embodiments of the present disclosure relate to a display panel and a display device.
- the iris recognition technology is to confirm the identity by photographing the iris of the human eye, and is a biometric-based identity authentication technology. Because the security of iris recognition is much higher than fingerprint recognition and facial recognition, it has become a major development trend of user identity recognition.
- the display device In order to realize the iris recognition function, the display device generally includes a display panel, an infrared light source emitting infrared light, a camera, and a processor. Since the current display device with the iris recognition function needs to be separately provided with an infrared light source, the structure of the display device is complicated, and it is not suitable for the requirements of lightweight and high integration of electronic devices.
- At least one embodiment of the present disclosure provides a display panel, including a display area, the display area includes an iris recognition area; the display panel further includes a light conversion layer disposed in the iris recognition area, the light conversion layer is It is configured to convert visible light incident thereon into infrared light, and the infrared light is emitted from the display side of the display panel.
- the material of the light conversion layer includes a down conversion luminescent material doped with rare earth elements.
- the rare earth element includes one or more of bait (Er), ytterbium (Yb), praseodymium (Pr), terbium (Tb), and thulium (Tm).
- bait Er
- Yb ytterbium
- Pr praseodymium
- Tb terbium
- Tm thulium
- one or more of the rare earth elements Er, Yb, Pr, Tb, and Tm are doped in the down-conversion luminescent material in the form of oxides.
- the display panel is a liquid crystal display panel.
- the display panel is an electroluminescence display panel
- the electroluminescence display panel includes a light-emitting function layer
- the light conversion layer is close to the display side of the display panel relative to the light-emitting function layer.
- the display panel includes a color filter layer; a portion of the color filter layer located in the iris recognition area is hollowed out.
- the color filter layer and the light conversion layer are provided in the same layer.
- the display panel includes a color filter layer; the color filter layer and the light conversion layer have an overlapping area along the thickness direction of the display panel; the light conversion layer is relative to the color The filter layer is close to the display side of the display panel; the color filter layer includes a red photoresist pattern, a green photoresist pattern and a blue photoresist pattern; the light conversion layer includes a first light conversion pattern, a second light conversion pattern A pattern and a third light conversion pattern; the first light conversion pattern is directly opposite to the red photoresist pattern and is configured to convert red light emitted from the red photoresist pattern into infrared light; the second light The conversion pattern is directly opposite to the green photoresist pattern, and is configured to convert the green light emitted from the green photoresist pattern into infrared light; the third light conversion pattern is directly opposite to the blue photoresist pattern and is It is configured to convert blue light emitted from the blue photoresist pattern into infrared light.
- the display panel is an electroluminescence display panel, and the display area includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel;
- the red sub-pixel includes a light-emitting functional layer that emits red light, so
- the green sub-pixel includes a light-emitting functional layer that emits green light, and the blue sub-pixel includes a light-emitting functional layer that emits blue light;
- the light conversion layer includes a first light conversion pattern, a second light conversion pattern, and a third light conversion pattern
- the first light conversion pattern is directly opposite to the red light emitting function layer, and is configured to convert the red light emitted by the light emitting function layer into infrared light;
- the second light conversion pattern and the green light emitting function The functional layer is directly opposite and is configured to convert the green light emitted by the light-emitting functional layer into infrared light;
- the third light conversion pattern is directly opposite to the blue-emitting light-emitting functional layer and is configured
- the first light conversion pattern, the second light conversion pattern, and the third light conversion pattern are connected together.
- At least one embodiment of the present disclosure further provides a display device, including the above-mentioned display panel, a light receiving sensor, and a processor; the iris recognition area of the display panel is configured to emit infrared light; the light receiving sensor is configured to When infrared light is emitted from the iris recognition area of the display panel, the iris image of the eyeball is acquired; the processor is connected to the light receiving sensor and is configured to obtain the iris image of the eyeball obtained by the light receiving sensor Iris feature information.
- the display device further includes a controller; the controller is configured to control the iris recognition area of the display panel and the area other than the iris recognition area in the display area to respectively emit light.
- the display device further includes a controller configured to control the iris recognition area of the display panel to emit light, while the area other than the iris recognition area in the display area does not emit light.
- the display device further includes a controller configured to control the iris recognition area of the display panel and the area other than the iris recognition area in the display area to simultaneously emit light.
- FIG. 1 is a schematic structural diagram of a display device provided by an embodiment of the disclosure
- FIG. 2 is a schematic diagram of area division of a display panel provided by an embodiment of the present disclosure
- FIG. 3 is a schematic structural diagram of an electroluminescent display device provided by an embodiment of the disclosure.
- FIG. 4 is a schematic structural diagram of an electroluminescent display panel provided by an embodiment of the disclosure.
- FIG. 5 is a schematic diagram of another structure of an electroluminescent display panel provided by an embodiment of the disclosure.
- FIG. 6 is a schematic diagram of another structure of an electroluminescent display panel provided by an embodiment of the disclosure.
- FIG. 7 is a schematic structural diagram of a liquid crystal display device provided by an embodiment of the disclosure.
- FIG. 8 is a schematic structural diagram of a liquid crystal display panel provided by an embodiment of the disclosure.
- FIG. 9 is a schematic structural diagram of another liquid crystal display panel provided by an embodiment of the disclosure.
- the embodiment of the present disclosure provides a display device having an iris recognition function.
- the display device 1 provided by the embodiment of the present disclosure may include a display panel 10, a light receiving sensor 20 and a processor 30.
- the display panel 10 includes an iris recognition area configured to emit infrared light; the light receiving sensor 20 is configured to emit infrared light in the iris recognition area of the display panel 10.
- the iris image of the eyeball is acquired; the processor 30 is connected to the light receiving sensor 20 and is configured to obtain iris feature information according to the iris image of the eyeball acquired by the light receiving sensor 20.
- the operation flow of iris recognition may include, for example, the user activates the iris recognition function; the user points his eyes to the iris camera, and the iris camera uses infrared light to scan the eyeball for imaging to obtain the iris image;
- the acquired iris image is collected and output to the processor; the processor performs iris region location, feature point extraction, and generates iris feature information based on the collected iris image.
- the first generated iris feature information is stored in the memory as an iris feature template. Used as an iris feature information database for identity authentication comparison; subsequent iris feature information collected in real time by repeating the foregoing operations will be matched with the stored iris feature information database.
- the iris can be unlocked, but if the matching fails, it cannot be achieved.
- the iris is unlocked.
- the iris camera performs imaging to obtain an iris image, it needs to scan and reflect the eyeball with infrared light to obtain the iris image of the eyeball.
- the light receiving sensor 20 may be a camera.
- the processor 30 may be a central processing unit (central processing unit, CPU for short) or a microprocessor.
- the display panel 10 includes a display area 01 and a peripheral area 02, and the display area 01 includes an iris recognition area 03.
- the display area 01 includes a plurality of pixels 04, and each pixel 04 includes at least a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel (B).
- FIG. 2 schematically shows a situation where the peripheral area 02 surrounds the display area 01, but the embodiment of the present disclosure is not limited thereto.
- the peripheral area 02 may be configured for wiring.
- the gate driving circuit is provided in the peripheral area 02.
- the iris recognition area 03 can be located at any position of the display area 01, subject to not affecting the normal display of the display area 01.
- the iris recognition area 03 may be located in the upper left corner or the upper right corner of the display area 01.
- the display panel 10 further includes a light conversion layer 100 disposed in the iris recognition area 03, the light conversion layer 100 is configured to convert visible light incident thereon into infrared light, and the infrared light is removed from the display panel 10.
- the display side shoots out.
- the light conversion layer 100 since the light conversion layer 100 is disposed in the iris recognition area 03, the light conversion layer 100 can convert visible light incident thereon into infrared light, and the infrared light is emitted from the display side of the display panel 10. Thus, the iris recognition area 03 of the display panel 10 emits infrared light. Since the iris recognition area 03 of the display panel 10 emits infrared light, it cannot be displayed. It should be understood that the display area 01 of the display panel 10 except for the iris recognition area 03 is the same as the display area 01 of the conventional display panel 10, which can emit red light, green light and blue light, and can perform normal display.
- the iris recognition area 03 should include multiple pixels 04, that is, the iris recognition area 03 may include multiple pixels.
- the iris recognition area 03 may include multiple pixels.
- the embodiment of the present disclosure does not specifically limit the material of the light conversion layer 100, and it is subject to the ability to convert visible light incident on the light conversion layer 100 into infrared light.
- the material of the light conversion layer 100 can be selected according to the type of visible light. For example, when the visible light is white light, the material of the light conversion layer 100 should be a material that can convert white light into infrared light. For another example, when the visible light is red light, the material of the light conversion layer 100 should be a material that can convert red light into infrared light.
- the material of the light conversion layer 100 may include a down-conversion luminescent material doped with rare earth elements.
- Down-conversion luminescent materials refer to materials that can emit two or more low-energy photons after absorbing one high-energy photon.
- the embodiments of the present disclosure do not specifically limit the rare earth elements doped in the down-conversion luminescent material.
- the above-mentioned rare earth elements may include one or more of bait (Er), ytterbium (Yb), praseodymium (Pr), terbium (Tb), and thulium (Tm).
- one or more of the aforementioned rare earth elements Er, Yb, Pr, Tb, and Tm are doped in the down-conversion luminescent material in the form of oxides.
- the material used for the light conversion layer in the embodiment of the present disclosure may be, for example, GeS2-Ga2S3-CsCI: Er, Yb.
- the type of the display device 1 provided by the embodiment of the present disclosure is not specifically limited here.
- it may be a liquid crystal display (Liquid Crystal Display, LCD for short).
- the display panel 10 in the liquid crystal display device is a liquid crystal display. panel.
- the display device 1 may also be an electroluminescence display device.
- the display panel 10 in the electroluminescence display device is an electroluminescence display panel.
- the electroluminescent display device may be an organic light-emitting diode (OLED for short) or a quantum dot light emitting diode (QLED for short).
- the electroluminescence display panel is an organic electroluminescence display panel.
- the electroluminescence display panel is a quantum dot electroluminescence display panel.
- the electroluminescent display device may further include a cover glass (Cover Glass, CG for short) 40, and the cover glass 40 is provided on the display panel 10 The light side.
- a cover glass Cross Glass, CG for short
- the electroluminescent display panel in the electroluminescent display device may include a display substrate 11 and an encapsulation layer 12 for encapsulating the display substrate 11.
- the encapsulation layer 12 may be an encapsulation film (Thin Film Encapsulation, TFE for short) or an encapsulation substrate.
- TFE Thin Film Encapsulation
- the above-mentioned display substrate 11 includes, in each sub-pixel, a light-emitting device and a pixel driving circuit disposed on the first substrate 110, and the pixel driving circuit includes a plurality of thin films.
- the light emitting device includes an anode 112, a light-emitting functional layer 113, and a cathode 114, and the anode 112 is electrically connected to the drain of the thin film transistor 111 serving as a driving transistor among the plurality of thin film transistors 111.
- the display substrate 11 may further include a pixel defining layer 115 that includes a plurality of opening regions, and one light emitting device is disposed in one opening region.
- the light-emitting functional layer 113 includes an electroluminescent (EL for short). In other embodiments, in addition to the light-emitting layer, the light-emitting functional layer 113 also includes an electron transport layer (election transporting layer, ETL), an electron injection layer (election injection layer, EIL), and a hole transporting layer (hole transporting layer). layer, HTL for short) and one or more layers of hole injection layer (HIL for short).
- the display panel 10 is an organic electroluminescence display panel
- the light-emitting layer is an organic light-emitting layer.
- the light-emitting layer is a quantum dot light-emitting layer.
- the display substrate 11 may further include a flat layer 116 provided between the thin film transistor 111 and the anode 112.
- the light-emitting function layer 113 in each sub-pixel emits white light.
- the display panel 10 may further include a light emitting function layer 113 disposed on the encapsulation layer 12 away from
- the color filter 117 on the side includes at least a red photoresist pattern, a green photoresist pattern and a blue photoresist pattern.
- the red sub-pixels include red photoresist patterns
- the green sub-pixels include green photoresist patterns
- the blue sub-pixels include blue photoresist patterns.
- the light-emitting functional layers 113 of each sub-pixel may be connected together as shown in FIGS. 4 and 5.
- the display panel 10 further includes a black matrix pattern (Black Matrix, BM for short) 118, and the black matrix pattern 118 is configured to The photoresist pattern, the green photoresist pattern, and the blue photoresist pattern are spaced apart.
- Black Matrix, BM for short Black Matrix, BM for short
- the red sub-pixel includes a light-emitting functional layer 113 that emits red light
- the green sub-pixel includes a light-emitting functional layer 113 that emits green light
- the blue sub-pixel includes a light-emitting functional layer that emits blue light.
- the display panel 10 may include a color filter 117 disposed on the side of the encapsulation layer 12 away from the light-emitting function layer 113, or may not include the color filter 117.
- FIG. 6 schematically shows an embodiment in which the display panel 10 does not include the color filter 117.
- the red light emitting function layer 113 is directly opposite to the red photoresist pattern
- the green light emitting function layer 113 is directly opposite to the green photoresist pattern, which emits blue light.
- the functional layer 113 is directly opposite to the blue photoresist pattern.
- the "right facing” means that the orthographic projection of the photoresist pattern on the plane where the light-emitting functional layer is at least partially overlapped with the light-emitting functional layer, and vice versa. In some examples, they can overlap completely.
- the display panel 10 may include the black matrix pattern 118 or not.
- the black matrix pattern 118 is disposed in the non-opening area of the pixel defining layer 115.
- the color filter 117 may be pasted on the encapsulation layer 12 by glue.
- the display panel 10 is an electroluminescence display panel
- the light-emitting function layer 113 in the electroluminescence display panel emits light
- the light conversion layer 100 is configured to convert visible light incident thereon into infrared light Therefore, the light conversion layer 100 is close to the display side of the display panel 10 relative to the light-emitting function layer 113.
- the infrared light is emitted from the display side of the display panel 10, and the color filter 117 can only pass red, green and blue light. It cannot pass, so infrared light cannot pass through the color filter 117.
- the light conversion layer 100 can be arranged at any position on the side of the light emitting function layer 113 close to the display side.
- the light conversion layer 100 may be disposed between the light-emitting function layer 113 and the cathode 114.
- the light conversion layer 100 should not affect the injection of electrons from the cathode 114 into the light-emitting function layer 113.
- the light conversion layer 100 may be disposed between the cathode 114 and the encapsulation layer 12.
- the light conversion layer 100 may be disposed on the side of the encapsulation layer 12 away from the cathode 114.
- FIG. 6 takes the light conversion layer 100 disposed on the side of the encapsulation layer 12 away from the cathode 114 as an example for illustration.
- the electroluminescent display panel does not include the color filter 117
- the red sub-pixel includes the light-emitting functional layer 113 that emits red light
- the green sub-pixel includes the light-emitting functional layer 113 that emits green light
- the blue The color sub-pixels include a light-emitting function layer 113 that emits blue light
- the light conversion layer 100 includes a first light conversion pattern, a second light conversion pattern, and a third light conversion pattern
- the first light conversion pattern and the light-emitting function layer 113 that emit red light It is directly opposite and is configured to convert the red light emitted by the light-emitting function layer 113 into infrared light
- the second light conversion pattern is directly opposite to the light-emitting function layer 113 that emits green light and is configured to convert the green light emitted by the light-emitting function layer 113 It is infrared light
- the third light conversion pattern is directly opposite to the blue light emitting function layer 113, and is configured to
- the first light conversion pattern, the second light conversion pattern, and the third light conversion pattern are connected together.
- the electroluminescent display panel includes a color filter 117 (the light-emitting functional layer 113 emits white light; alternatively, the light-emitting functional layer 113 emits red, green or blue light), in some embodiments, as shown in FIG. 4
- the part of the color filter layer 117 located in the iris recognition area 03 is hollowed out. Since the color filter layer 117 is hollowed out in the iris recognition area 03, after the light conversion layer 100 located in the iris recognition area 03 converts the visible light emitted by the light-emitting function layer 113 into infrared light, the infrared light will not pass through the color filter layer 117 .
- the light conversion layer 100 may be disposed at any position on the side of the light emitting function layer 113 close to the display side of the display panel 10. This has been described in detail in the foregoing embodiment, and will not be repeated here.
- the color filter layer 117 and the light conversion layer 100 are provided in the same layer.
- the color filter layer 117 and the light conversion layer 100 are arranged in the same layer” means that the color filter layer 117 and the light conversion layer 100 are located on the same bearing surface.
- the color filter layer 117 and the light conversion layer 100 are arranged in the same layer, and the color filter layer 117 may be formed first, and then the light conversion layer 100; or the light conversion layer 100 may be formed first, and then the color filter layer 117 may be formed. .
- the thickness of the electroluminescent display panel can be reduced.
- the display panel 10 includes a color filter layer 117, and the color filter layer 117 and the light conversion layer 100 have overlapping areas along the thickness direction of the display panel 10; the light conversion layer 100 is opposite to The color filter layer 117 is close to the display side of the display panel 10.
- the color filter layer 117 includes a red photoresist pattern, a green photoresist pattern, and a blue photoresist pattern;
- the light conversion layer 100 includes a first light conversion pattern, a second light conversion pattern, and a third light conversion pattern; The pattern is directly opposite to the red photoresist pattern and is configured to convert red light emitted from the red photoresist pattern into infrared light;
- the second light conversion pattern is directly opposite to the green photoresist pattern and is configured to emit from the green photoresist pattern
- the green light is converted into infrared light;
- the third light conversion pattern is directly opposite to the blue photoresist pattern, and is configured to convert the blue light emitted from the blue photoresist pattern into infrared light.
- the first light conversion pattern, the second light conversion pattern, and the third light conversion pattern are connected together.
- the light conversion layer 100 when the light-emitting function layer 113 emits white light and the color filter layer 117 is hollowed out in the iris recognition area 03, since the light conversion layer 100 can convert white light into infrared light, the light conversion layer 100 is in different sub-substrates. The material of each part in the pixel is the same, so that the manufacturing process of the light conversion layer 100 can be simplified.
- the liquid crystal display device when the display device 1 is a liquid crystal display device, as shown in FIG. 7, the liquid crystal display device further includes a cover glass 40 and a backlight assembly 50.
- the cover glass 40 is arranged on the light emitting side of the display panel 10.
- the assembly 50 is disposed on a side of the display panel 10 opposite to the light-emitting side, and the backlight assembly 50 is configured to provide a light source for the display panel 10.
- the main structure of the liquid crystal display panel in the liquid crystal display device includes an array substrate 13, an alignment substrate 14, and a liquid crystal layer 15 provided between the array substrate 13 and the alignment substrate 14.
- the array substrate 13 includes a thin film transistor 131 and a pixel electrode 132 disposed on the second substrate 130 in each sub-pixel.
- the thin film transistor 131 includes an active layer, a source electrode, a drain electrode, a gate electrode, and a gate insulating layer.
- the source electrode and the drain electrode respectively contact the active layer, and the pixel electrode 132 is electrically connected to the drain electrode of the thin film transistor 131.
- the array substrate 13 further includes a common electrode 133 provided on the second substrate 130.
- the pixel electrode 132 and the common electrode 133 may be arranged on the same layer.
- the pixel electrode 132 and the common electrode 133 are both comb-tooth structures including a plurality of strip-shaped sub-electrodes.
- the pixel electrode 132 and the common electrode 133 may also be provided in different layers.
- a first insulating layer 134 is provided between the pixel electrode 132 and the common electrode 133.
- a second insulating layer 135 is further provided between the common electrode 133 and the thin film transistor 131.
- the common electrode 133 may be disposed on the box substrate 14.
- the box substrate 14 includes a color filter layer 117 disposed on the third substrate 140.
- the box substrate 14 may also be referred to as a color filter substrate (color filter substrate). , Referred to as CF).
- the color filter layer 117 at least includes a red photoresist pattern, a green photoresist pattern, and a blue photoresist pattern.
- the box substrate 14 further includes a black matrix pattern 118 disposed on the third substrate 140, and the black matrix pattern 118 is configured to space a red photoresist pattern, a green photoresist pattern, and a blue photoresist pattern. .
- the array substrate 13 further includes a color filter 117 disposed on the second substrate 130, and the red photoresist pattern, the green photoresist pattern and the blue photoresist pattern are respectively located in different sub-pixels.
- the array substrate may be called a COA substrate (Color filter on Array, where the color filter layer is integrated on the array substrate).
- the array substrate 13 may include the black matrix pattern 118 provided on the second substrate 130; or the box substrate 14 may include the black matrix pattern 118 provided on the third substrate 140.
- the black matrix pattern 118 may include the black matrix pattern 118.
- the backlight assembly 50 provides a light source for the liquid crystal display panel, and the light conversion layer 100 converts visible light emitted by the backlight assembly 50 into infrared light. Since infrared light is emitted from the display side of the display panel 10, the color filter 117 can only pass red light, green light and blue light, and the infrared light cannot pass, so the infrared light cannot pass through the color filter 117.
- the part of the color filter layer 117 in the iris recognition area 03 is hollowed out. Since the color filter layer 117 is hollowed out in the iris recognition area 03, the visible light emitted by the backlight assembly 50 hits the light conversion layer 100 and is converted into infrared light by the light conversion layer 100, and then exits from the display side of the display panel 10. Infrared light does not pass through the color filter layer 117.
- the light conversion layer 100 may be disposed at any position in the iris recognition area 03.
- the box substrate 14 includes a light conversion layer 100 located in the iris recognition area 03, and the light conversion layer 100 can be disposed at any position on the third substrate 140.
- the array substrate 13 includes a light conversion layer 100 located in the iris recognition area 03, and the light conversion layer 100 can be disposed at any position on the second substrate 130.
- the color filter layer 117 and the light conversion layer 100 are provided in the same layer.
- the foregoing embodiment has already described in detail "the color filter layer 117 and the light conversion layer 100 are arranged in the same layer", which will not be repeated here.
- the thickness of the liquid crystal display panel can be reduced.
- the color filter layer 117 when the color filter layer 117 is hollowed out in the iris recognition area 03, since the light conversion layer 100 directly converts the white light emitted by the backlight assembly 50 into infrared light, the light conversion layer 100 is in different sub-surfaces. The material of each part in the pixel is the same, so that the manufacturing process of the light conversion layer 100 can be simplified.
- the display panel 10 may include a color filter layer 117; the color filter layer 117 and the light conversion layer 100 have an overlapping area along the thickness direction of the display panel 10; the light conversion layer 100 is opposite to The color filter layer 117 is close to the display side of the display panel 10.
- the color filter layer 117 includes a red photoresist pattern, a green photoresist pattern, and a blue photoresist pattern;
- the light conversion layer 100 includes a first light conversion pattern, a second light conversion pattern, and a third light conversion pattern;
- a light conversion pattern is directly opposite to the red photoresist pattern and is configured to convert the red light emitted from the red photoresist pattern into infrared light;
- the second light conversion pattern is directly opposite to the green photoresist pattern and is configured to convert from the green light
- the green light emitted from the resist pattern is converted into infrared light;
- the third light conversion pattern is directly opposite to the blue photoresist pattern and is configured to convert the blue light emitted from the blue photoresist pattern into infrared light.
- the term "right facing” means that the orthographic projection of the photoresist pattern on the plane where the light conversion pattern is at least partially overlaps the light conversion pattern, and vice versa. In some examples, they can overlap completely.
- the color filter 117 and the light conversion layer 100 may be disposed on the same side of the third substrate 140, or may be disposed on the third substrate 140. Different sides.
- the black matrix pattern 118 is located in the iris recognition area 03. Part is hollowed out.
- the black matrix pattern 118 is hollowed out in the iris recognition area 03, it can avoid that the black matrix pattern 118 absorbs part of the visible light and causes the visible light incident on the light conversion layer 100 to decrease, so as to avoid the conversion of the light conversion layer 100.
- the infrared light is reduced.
- the first substrate 110 and the second substrate 130 in the foregoing embodiments may be glass substrates or silicon-based substrates.
- the pixel driving circuit can be formed on the silicon-based substrate using a CMOS process, thereby simplifying the manufacturing process of the display substrate 11 and the array substrate 13 , The integration of the display substrate 11 and the array substrate 13 is improved, and high PPI (Pixels Per Inch, pixel density) display can be realized.
- a display device with an iris recognition function generally includes a display panel and an infrared light source.
- the infrared light source may be, for example, a light emitting diode that emits infrared light. Since the infrared light source needs to be separately provided, the structure of the display device with the iris recognition function is complicated, and it is not suitable for the requirements of lightweight and high integration of electronic devices.
- the display device provided by the embodiments of the present disclosure includes a display panel, a light receiver, and a processor.
- the display panel includes an iris recognition area and a light conversion layer disposed in the iris recognition area, and the light conversion layer can be irradiated to it.
- the visible light on the screen is converted into infrared light, and the infrared light is emitted from the display side of the display panel. Therefore, when the display device based on the embodiment of the present disclosure performs iris recognition, the iris recognition area on the display panel can be used to emit infrared light, and the light receiving sensor obtains the iris image of the eye when the iris recognition area emits infrared light, and processes According to the iris image of the eyeball obtained by the light receiving sensor, the device obtains iris feature information and matches the iris feature information with the stored iris feature information database. If the matching is successful, the iris can be unlocked, and if the matching is not successful, the iris can not be unlocked.
- the iris recognition area of the display panel in the display device of the embodiment of the present disclosure can emit infrared light, there is no need to separately provide an infrared light source, which simplifies the structure of the display device, facilitates the lightweight of the display device, and improves the integration of the display device.
- the display device 1 may further include a controller.
- the controller may be configured to respectively control the iris recognition area 03 of the display panel 10 and the area other than the iris recognition area 03 in the display area 01 to emit light.
- the controller may also only control the iris recognition area 03 of the display panel 10 to emit light, and the area of the display area 01 except the iris recognition area 03 does not emit light.
- the controller may also control the iris recognition area 03 of the display panel 10 to not emit light, but the area of the display area 01 except the iris recognition area 03 to emit light.
- the controller controls the iris recognition area 03 to emit infrared light on the one hand, and on the other hand, it can control the area of the display area 01 except the iris recognition area 03 to emit light, that is, control the display area 01 except the iris Areas other than the recognition area 03 are displayed, and the areas other than the iris recognition area 03 in the display area 01 can also be controlled to not emit light, that is, the areas other than the iris recognition area 03 in the display area 01 are not displayed.
- the controller can respectively control the iris recognition area 03 of the display panel 10 and the area other than the iris recognition area 03 in the display area 01 to emit light.
- the controller can respectively control the iris recognition area 03 of the display panel 10 and the area other than the iris recognition area 03 in the display area 01 to emit light.
- the display device 1 provided by the embodiment of the present disclosure may be a normal size display device or a micro display device.
- the micro display device can be applied in the field of VR (Virtual Reality, virtual reality) or AR (Augmented Reality, augmented reality).
- the embodiments of the present disclosure provide a display panel and a display device.
- the display panel includes a light conversion layer disposed in an iris recognition area.
- the light conversion layer can convert visible light incident thereon into infrared light. It emits from the display side of the display panel, so when performing iris recognition, the iris recognition area of the display panel can be used to emit infrared light;
- the light receiving sensor can obtain the iris image of the eye when the iris recognition area emits infrared light;
- the processor can receive light according to the light
- the iris image of the eyeball obtained by the sensor obtains the iris feature information, and matches the iris feature information with the stored iris feature information database.
- the iris recognition area of the display panel of the embodiment of the present disclosure can emit infrared light, there is no need to separately provide an infrared light source, which simplifies the structure of the display device, facilitates the lightweight of the display device, and improves the integration of the display device.
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Abstract
Description
Claims (15)
- 一种显示面板,包括显示区,所述显示区包括虹膜识别区;所述显示面板还包括设置于所述虹膜识别区的光转换层,所述光转换层被配置为将入射到其上的可见光转换为红外光,并且所述红外光从所述显示面板的显示侧出射。
- 根据权利要求1所述的显示面板,其中,所述光转换层的材料包括掺杂稀土元素的下转化发光材料。
- 根据权利要求2所述的显示面板,其中,所述稀土元素包括饵(Er)、镱(Yb)、镨(Pr)、铽(Tb)和铥(Tm)中的一种或多种。
- 根据权利要求3所述的显示面板,其中,所述稀土元素Er、Yb、Pr、Tb和Tm中的一种或多种以氧化物的形式掺杂在所述下转换发光材料中。
- 根据权利要求1所述的显示面板,其中,所述显示面板为液晶显示面板。
- 根据权利要求1所述的显示面板,其中,所述显示面板为电致发光显示面板,所述电致发光显示面板包括发光功能层,所述光转换层相对于所述发光功能层靠近所述显示面板的显示侧。
- 根据权利要求6所述的显示面板,其中,所述显示面板包括彩色滤光层;所述彩色滤光层的位于所述虹膜识别区的部分是镂空的。
- 根据权利要求7所述的显示面板,其中,所述彩色滤光层和所述光转换层同层设置。
- 根据权利要求7所述的显示面板,其中,所述彩色滤光层与所述光转换层沿所述显示面板的厚度方向具有重叠区域,所述光转换层相对于所述彩色滤光层靠近所述显示面板的显示侧;所述彩色滤光层包括红色光阻图案、绿色光阻图案和蓝色光阻图案;所述光转换层包括第一光转换图案、第二光转换图案和第三光转换图案;所述第一光转换图案与所述红色光阻图案正对,被配置为将从所述红色光阻图案出射的红光转换为红外光;所述第二光转换图案与所述绿色光阻图案正对,被配置为将从所述绿色光阻图案出射的绿光转换为红外光;所述第三光转换图案与所述蓝色光阻图案正对,被配置为将从所述蓝色光阻图案出射的蓝光转换为红外光。
- 根据权利要求6所述的显示面板,其中,所述显示区包括红色亚像素、绿色亚像素和蓝色亚像素;所述红色亚像素包括发红光的发光功能层,所述绿色亚像素包括发绿光的发光功能层,所述蓝色亚像素包括发蓝光的发光功能层;所述光转换层包括第一光转换图案、第二光转换图案、第三光转换图案;所述第一光转换图案与发红光的发光功能层正对,被配置为将所述发光功能层发出的红光转换为红外光;所述第二光转换图案与发绿光的发光功能层正对,被配置为将所述发光功能层发出的绿光转换为红外光;所述第三光转换图案与发蓝光的发光功能层正对,被配置为将所述发光功能层发出的蓝光转换为红外光。
- 根据权利要求9或10所述的显示面板,其中,所述第一光转换图案、所述第二光转换图案和所述第三光转换图案连接在一起。
- 一种显示装置,包括如权利要求1-11中任一项所述的显示面板、光接收传感器以及处理器;所述显示面板的虹膜识别区被配置为发红外光;所述光接收传感器被配置为在所述显示面板的虹膜识别区发红外光时,获取眼球的虹膜图像;所述处理器与所述光接收传感器相连接,被配置为根据所述光接收传 感器获取到的眼球的虹膜图像得到虹膜特征信息。
- 根据权利要求12所述的显示装置,其中,所述显示装置还包括控制器,所述控制器被配置为控制所述显示面板的虹膜识别区和显示区中除所述虹膜识别区以外的区域分别发光。
- 根据权利要求12所述的显示装置,其中,所述显示装置还包括控制器,所述控制器被配置为控制所述显示面板的虹膜识别区发光,而显示区中除虹膜识别区以外的区域不发光。
- 根据权利要求12所述的显示装置,其中,所述显示装置还包括控制器,所述控制器被配置为控制所述显示面板的虹膜识别区和显示区中除虹膜识别区以外的区域同时进行发光。
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CN113327955B (zh) * | 2020-02-28 | 2023-05-23 | 上海和辉光电股份有限公司 | 一种显示面板和显示装置 |
CN111723771B (zh) * | 2020-06-30 | 2024-05-24 | 京东方科技集团股份有限公司 | 显示装置及其制作方法 |
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