CN111948842A - Display device - Google Patents
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- CN111948842A CN111948842A CN202010788739.9A CN202010788739A CN111948842A CN 111948842 A CN111948842 A CN 111948842A CN 202010788739 A CN202010788739 A CN 202010788739A CN 111948842 A CN111948842 A CN 111948842A
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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
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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
-
- 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
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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
- 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
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
Abstract
The application provides a display device, a display panel is arranged on a light-emitting side of a backlight module, the display panel comprises a display area, and the display area comprises a display fingerprint identification area; the fingerprint identification function layer is correspondingly arranged on the display fingerprint identification area; the display panel comprises a color film substrate, the color film substrate comprises a substrate, a color film layer and a light excitation structure, and the light excitation structure is at least positioned in the display fingerprint identification area; the optical excitation structure comprises a first flat layer and quantum dots, the first flat layer is arranged on the color film layer, and the quantum dots are doped in the first flat layer; the quantum dots are excited by illumination and emit invisible light. This application is through inciting somebody to action light to arouse the structure setting in display panel, utilizes the quantum dot in the light arouses the structure as the light emitting source, has improved fingerprint identification's precision.
Description
Technical Field
The present disclosure relates to display technologies, and particularly to a display device.
Background
Because the liquid crystal display panel is passively luminous, the light transmittance of the array substrate is low, and the backlight source interferes with reflected light, so that the identification accuracy of fingerprint identification under the screen is poor.
Disclosure of Invention
The embodiment of the application provides a display device to solve the technical problem that the identification accuracy of fingerprint identification under the screen of the existing liquid crystal display panel is poor.
An embodiment of the present application provides a display device, which includes:
a backlight module;
the display panel is arranged on the light emitting side of the backlight module and comprises a display area, and the display area comprises a display fingerprint identification area; and
the fingerprint identification function layer is correspondingly arranged on the display fingerprint identification area;
the display panel comprises a color film substrate, the color film substrate comprises a substrate, a color film layer and a light excitation structure, the color film layer covers one side of the substrate facing the backlight module, the light excitation structure is arranged on the color film layer, and the light excitation structure is at least positioned in the display fingerprint identification area;
the optical excitation structure comprises a first flat layer and quantum dots, wherein the first flat layer is arranged on the color film layer, and the quantum dots are doped in the first flat layer; the quantum dots are excited by illumination to emit invisible light.
In the display device according to the embodiment of the application, the display fingerprint identification area is at least a part of the display area.
In the display device according to the embodiment of the application, the first flat layer includes a first flat sub-layer and a second flat sub-layer sequentially disposed on the color film layer, the quantum dots include first quantum dots and second quantum dots, the first quantum dots are doped in the first flat sub-layer, and the second quantum dots are doped in the second flat sub-layer;
the particle size of the first quantum dot is smaller than that of the second quantum dot.
In the display device according to the embodiment of the present application, the first planarization layer has a single-layer structure.
In the display device according to the embodiment of the application, the display area further includes a display non-fingerprint identification area, the color film substrate further includes a second planarization layer, the second planarization layer is connected with the first planarization layer and is disposed on the same layer, and the second planarization layer and the first planarization layer are made of the same material.
In the display device according to the embodiment of the application, the color film layer includes a plurality of color resistors and a black matrix, and the black matrix is disposed between two adjacent color resistors; the fingerprint identification function layer comprises a patterned metal layer, and the metal layer is arranged corresponding to the black matrix.
In the display device according to the embodiment of the application, the fingerprint identification functional layer is disposed on a side of the substrate facing away from the backlight module.
In the display device according to the embodiment of the present application, the display panel further includes an array substrate and a liquid crystal, and the liquid crystal is disposed between the array substrate and the color film substrate; the fingerprint identification function layer is formed on the array substrate.
In the display device according to the embodiment of the present application, the invisible light is infrared light or ultraviolet light.
In the display device according to the embodiment of the application, the color film substrate further includes spacers, and the spacers are disposed on one surface of the first flat layer facing the backlight module.
According to the display device, the light excitation structure is arranged in the display panel, the quantum dots in the light excitation structure are used as light emitting sources, invisible light is emitted to a fingerprint, and then the invisible light is reflected to the fingerprint identification function layer through the fingerprint to detect fingerprint information, so that the fingerprint identification accuracy is improved; and the quantum dots can not influence the display effect when emitting invisible light, and the quantum dots are directly arranged in the first flat layer, so that the thickness of the display panel is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments are briefly described below. The drawings in the following description are only some embodiments of the present application, and it will be obvious to those skilled in the art that other drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic top view of a display device according to a first embodiment of the present application;
FIG. 2 is a schematic cross-sectional view taken along line BB of FIG. 1;
FIG. 3 is a schematic structural diagram of a light excitation structure of a display device according to a first embodiment of the present application;
fig. 4 is a schematic cross-sectional structure diagram of a display device according to a second embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1 and 2, fig. 1 is a schematic top view structure diagram of a display device according to a first embodiment of the present application; fig. 2 is a schematic sectional view along line BB in fig. 1.
The embodiment of the application provides a display device 100, which comprises a backlight module 10a, a display panel 10b, a fingerprint identification functional layer 10c and a cover plate 10 d.
The display panel 10b is disposed on the light-emitting side of the backlight module 10 a. The display panel 10b includes a display area AA including a display fingerprint identification area AM.
The fingerprint identification function layer 10c is correspondingly arranged on the display fingerprint identification area AM.
The cover plate 10d is disposed on the display panel 10 b.
The display panel 10b includes a color film substrate 11, an array substrate 12, and a liquid crystal 13. The liquid crystal 13 is disposed between the array substrate 12 and the color filter substrate 11.
The color film substrate 11 includes a substrate 111, a color film layer 112, a light excitation structure 113, and spacers 114. The color film layer 112 covers a side of the substrate 111 facing the backlight module 10 a. The light excitation structure 113 is disposed on the color film layer 112. The light excitation structure 113 is at least located in the display fingerprint identification area AM.
The photo-excited structure 113 includes a first planarization layer 113a and quantum dots 113 b. The first flat layer 113a is disposed on the color film layer 112, and the quantum dots 113b are doped in the first flat layer 113 a. The quantum dots 113b are excited by illumination and emit invisible light.
The spacers 114 are disposed on a surface of the first planarization layer 113a facing the backlight module 10 a.
In the display device 100 of the first embodiment, the light excitation structure 113 is disposed in the display panel 10b, and the quantum dots 113b in the light excitation structure 113 are used as light emitting sources to emit invisible light to the fingerprint, and then the invisible light is reflected by the fingerprint to the fingerprint identification function layer 10c to detect the fingerprint information, so that the accuracy of fingerprint identification is improved; the quantum dots 113b emit invisible light without affecting the display effect, and the quantum dots are directly formed in the first flat layer 113a, thereby reducing the thickness of the display panel 10 b.
Optionally, the invisible light is infrared light or ultraviolet light, but is not limited thereto.
In the display device 100 according to the first embodiment, the display fingerprint identification area AM is at least a part of the display area AA. Specifically, the display fingerprint identification area AM is a part of the display area AA.
The display area AA further includes a non-fingerprint identification area AN. The color film substrate 11 further includes a second planarization layer 115, and the second planarization layer 115 is connected to the first planarization layer 113a and disposed on the same layer. The second planarization layer 115 and the first planarization layer 113a are made of the same material.
Specifically, the display non-fingerprint identification area AN is disposed on the periphery side of the display fingerprint identification area AM. The same material is used for the first planarization layer 113a and the second planarization layer 115 to facilitate the tight connection therebetween. That is, the second planarization layer 115 is connected to the peripheral side of the first planarization layer 113 a.
In some embodiments, the display fingerprint identification area AM is the display area AA. I.e. the display panel 10b enables full screen fingerprinting. When the display fingerprint identification area AM is the display area AA, the first flat layer 113a covers the entire display area AA, and the second flat layer is not disposed.
Referring to fig. 3, in the display device 100 according to the first embodiment, the first flat layer 113a includes a first flat sub-layer 1131 and a second flat sub-layer 1132 sequentially disposed on the color film layer 112. The quantum dots 113b include first quantum dots 1133 and second quantum dots 1134. The first quantum dots 1133 are doped in the first planar sublayer 1131, and the second quantum dots 1134 are doped in the second planar sublayer 1132.
The particle size of the first quantum dots 1133 is smaller than the particle size of the second quantum dots 1134.
When the backlight module 10a emits light to the first planar layer 113a, a part of the light first illuminates the second quantum dots 1134 in the second planar sublayer 1132, and the second quantum dots 1134 emit invisible light; part of the invisible light emitted by the second quantum dots 1134 is radiated to the first quantum dots 1133 in the first planar sublayer 1131, and part of the invisible light is radiated to the fingerprint through the gaps between the first quantum dots 1133; in addition, a part of the light directly passes through the gaps between the second quantum dots 1134 and is radiated to the first quantum dots 1133, and the first quantum dots 1133 emit invisible light and radiate to the fingerprint.
It is obvious that the first quantum dots 1133 and the second quantum dots 1134 are stacked and staggered to improve the light excitation effect. Further, the particle size of the first quantum dots 1133 is smaller than that of the second quantum dots 1134, so that the density of the first quantum dots 1133 is greater than that of the second quantum dots 1134, and the first quantum dots 1133 facilitate to supplement gaps between the second quantum dots 1134, thereby improving the excitation effect of the invisible light.
In some embodiments, the first planar layer 113a is a multilayer structure, such as a trilayer structure; the first planarization layer 113a may have a single-layer structure.
In some embodiments, the outer surface of the first quantum dot 1133 is covered with a transparent protective layer, and the protective layer and the first flat sub-layer 1131 form a curved refractive interface to enlarge the emission angle of the light emitted from the first quantum dot 1133. Specifically, the protective layer has a greater denseness than the first planar sublayer 1131.
In the display device 100 according to the first embodiment, the color film layer 112 includes a plurality of color resistors 112a and a black matrix 112 b. The black matrix 112b is disposed between two adjacent color resistors 112 a. The fingerprint recognition function layer 10c includes a patterned metal layer disposed corresponding to the black matrix 112 b. Such an arrangement avoids lowering the aperture ratio of the display panel 10 b.
Optionally, the plurality of color resistors 112a includes a red color resistor, a green color resistor, and a blue color resistor.
In the display device 100 of the first embodiment, the array substrate 12 includes a substrate 121 and a thin film transistor structure layer 122 disposed on the glass substrate 121. The substrate 121 may be a rigid substrate or a flexible substrate, such as glass or PI material.
The display panel 10b further includes a first polarizing plate 14 and a second polarizing plate 15. The first polarizer 14 is arranged between the color film substrate 11 and the fingerprint identification functional layer 10 c. The second polarizer 15 is disposed between the array substrate 12 and the backlight module.
In the display device 100 according to the first embodiment, the fingerprint identification function layer 10c is disposed on a side of the substrate 111 facing away from the backlight module 10 a.
Referring to fig. 4, the display device 200 of the second embodiment includes a backlight module 20a, a display panel 20b, a fingerprint identification function layer 20c, and a cover plate 20 d. The display panel 20b includes a color film substrate 21, an array substrate 22 and a liquid crystal 23. The liquid crystal 23 is disposed between the array substrate 22 and the color filter substrate 21. The color film substrate 21 includes a substrate 211, a color film layer 212, a light excitation structure 213, a second flat layer 215, and spacers 214. The array substrate 22 includes a substrate 221 and a thin film transistor structure layer 222 disposed on the glass substrate 221.
The display panel 20b further includes a first polarizing plate 24 and a second polarizing plate 25. The first polarizer 24 is disposed between the color filter substrate 21 and the cover plate 20 d. The second polarizer 15 is disposed between the array substrate 22 and the backlight assembly 20 a.
The display device 200 of the second embodiment differs from the display device 100 of the first embodiment in that: the fingerprint recognition function layer 20c is formed on the array substrate 22. Specifically, the fingerprint identification function layer 20c may be integrated in the array substrate 22, or may be integrated on a side of the array substrate 22 facing the liquid crystal 23.
According to the display device, the light excitation structure is arranged in the display panel, the quantum dots in the light excitation structure are used as light emitting sources, invisible light is emitted to a fingerprint, and then the invisible light is reflected to the fingerprint identification function layer through the fingerprint to detect fingerprint information, so that the fingerprint identification accuracy is improved; and the quantum dots can not influence the display effect when emitting invisible light, and the quantum dots are directly arranged in the first flat layer, so that the thickness of the display panel is reduced.
The display device provided by the embodiment of the present application is described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the above embodiment is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A display device, comprising:
a backlight module;
the display panel is arranged on the light emitting side of the backlight module and comprises a display area, and the display area comprises a display fingerprint identification area; and
the fingerprint identification function layer is correspondingly arranged on the display fingerprint identification area;
the display panel comprises a color film substrate, the color film substrate comprises a substrate, a color film layer and a light excitation structure, the color film layer covers one side of the substrate facing the backlight module, the light excitation structure is arranged on the color film layer, and the light excitation structure is at least positioned in the display fingerprint identification area;
the optical excitation structure comprises a first flat layer and quantum dots, wherein the first flat layer is arranged on the color film layer, and the quantum dots are doped in the first flat layer; the quantum dots are excited by illumination to emit invisible light.
2. The display device according to claim 1, wherein the display fingerprint identification area is at least a portion of the display area.
3. The display device according to claim 2, wherein the first flat layer comprises a first flat sub-layer and a second flat sub-layer sequentially disposed on the color film layer, the quantum dots comprise first quantum dots and second quantum dots, the first quantum dots are doped in the first flat sub-layer, and the second quantum dots are doped in the second flat sub-layer;
the particle size of the first quantum dot is smaller than that of the second quantum dot.
4. The display device according to claim 2, wherein the first planarization layer has a single-layer structure.
5. The display device according to claim 2, wherein the display region further comprises a display non-fingerprint identification region, the color filter substrate further comprises a second planarization layer, the second planarization layer is connected with the first planarization layer and is arranged on the same layer, and the second planarization layer and the first planarization layer are made of the same material.
6. The display device according to claim 1, wherein the color film layer comprises a plurality of color resistors and a black matrix, and the black matrix is disposed between two adjacent color resistors; the fingerprint identification function layer comprises a patterned metal layer, and the metal layer is arranged corresponding to the black matrix.
7. The display device according to claim 1, wherein the fingerprint identification functional layer is disposed on a side of the substrate facing away from the backlight module.
8. The display device according to claim 1, wherein the display panel further comprises an array substrate and liquid crystal, the liquid crystal is disposed between the array substrate and the color filter substrate, and the fingerprint identification function layer is formed on the array substrate.
9. The display device according to claim 1, wherein the invisible light is infrared light or ultraviolet light.
10. The display device according to claim 1, wherein the color filter substrate further comprises spacers, and the spacers are disposed on a surface of the first flat layer facing the backlight module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010788739.9A CN111948842A (en) | 2020-08-07 | 2020-08-07 | Display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010788739.9A CN111948842A (en) | 2020-08-07 | 2020-08-07 | Display device |
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| CN111948842A true CN111948842A (en) | 2020-11-17 |
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| CN106529513A (en) * | 2016-12-20 | 2017-03-22 | 北京小米移动软件有限公司 | Color filter substrate, display module and electronic equipment |
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