CN114114753B - Display module and display device - Google Patents
Display module and display device Download PDFInfo
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- CN114114753B CN114114753B CN202111453760.4A CN202111453760A CN114114753B CN 114114753 B CN114114753 B CN 114114753B CN 202111453760 A CN202111453760 A CN 202111453760A CN 114114753 B CN114114753 B CN 114114753B
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Classifications
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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
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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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
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/155—Electrodes
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- Physics & Mathematics (AREA)
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a display module and a display device, which relate to the technical field of display, and comprise a display panel, a backlight module and a fingerprint module, wherein the display panel is positioned on the light emitting surface of the backlight module; the backlight module comprises a backlight hole, the backlight hole penetrates through the backlight module along a first direction, the fingerprint module is positioned in the backlight hole, and the first direction is perpendicular to the light emitting surface of the backlight module; the fingerprint module comprises an infrared light source and a fingerprint identification component, and the infrared light source is positioned between the fingerprint identification component and the display panel along the first direction; the display panel comprises a fingerprint identification area positioned in the display area, and the fingerprint identification area is overlapped with the backlight hole along the first direction; in the fingerprint identification area, the display panel comprises a plurality of color resistors filled with quantum dots, and at least two color resistors are filled with quantum dots with different colors. Therefore, the uniformity of the display brightness of the display area at the position of the backlight hole and other positions is improved, and the display effect of the product is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display module and a display device.
Background
From CRT (Cathode Ray Tube) age to liquid crystal age to the now coming OLED (Organic Light-Emitting Diode) age, the display industry has undergone decades of development to become more and more varied. The display industry is closely related to our lives, and the display technology is not available from the traditional mobile phones, flat-panel televisions, PCs, the current intelligent wearable devices, VR (virtual reality) and other electronic devices.
Along with the pursuit of people on the comprehensive screen of electronic equipment such as mobile phones, research and development is also conducted to the full-screen direction of the display screen to the greatest extent, for example, an under-screen fingerprint identification technology corresponding to a liquid crystal display device is conducted, a backlight hole is arranged in a backlight module, a fingerprint identification component is arranged in the area of the backlight hole, which is equivalent to arranging a fingerprint identification area in a display area, and in the display stage, the fingerprint identification area plays a display function; in the fingerprint identification stage, the fingerprint identification area is used for fingerprint identification. However, in this design manner, since the backlight corresponding to the fingerprint identification area is hollowed out, the light of the backlight is difficult to be effectively transmitted to the area, so that the difference between the brightness of the fingerprint identification area and the display brightness of other display areas is large, and the display effect is poor.
Disclosure of Invention
In view of this, the present invention provides a display module and a display device, which are favorable for improving the uniformity of the display brightness of the display area at the position of the backlight hole and other positions, and improving the display effect of the product.
In a first aspect, the present application provides a display module, including a display panel, a backlight module, and a fingerprint module, where the display panel is located on a light emitting surface of the backlight module;
the backlight module comprises a backlight hole, the backlight hole penetrates through the backlight module along a first direction, the fingerprint module is positioned in the backlight hole, and the first direction is perpendicular to the light emitting surface of the backlight module;
the fingerprint module comprises an infrared light source and a fingerprint identification component, and the infrared light source is positioned between the fingerprint identification component and the display panel along the first direction;
the display panel comprises a fingerprint identification area positioned in the display area, and the fingerprint identification area is overlapped with the backlight hole along the first direction; in the fingerprint identification area, the display panel comprises a plurality of color resistors filled with quantum dots, and at least two color resistors are filled with quantum dots with different colors.
In a second aspect, the present invention further provides a display apparatus, including the display module provided by the present invention.
Compared with the prior art, the display module and the display device provided by the invention have the advantages that at least the following effects are realized:
the display module and the display device provided by the embodiment of the invention are provided with a display panel, a backlight module and a fingerprint module, wherein the backlight module is provided with a backlight hole, and the fingerprint module is positioned in the backlight hole. The fingerprint module comprises a fingerprint identification component and an infrared light source, wherein the area corresponding to the backlight hole position in the display area is the fingerprint identification area, and in the fingerprint identification stage, the light of the infrared light source is emitted to the light emitting surface of the display panel, and after being reflected by the touch main body, the part of the light is emitted to the fingerprint module, so that fingerprint identification is realized. In particular, in the fingerprint identification area, the display panel comprises a plurality of color resistors filled with quantum dots, and the colors of the quantum dots filled with at least two color resistors are different. In the display stage, light emitted by the infrared light source irradiates to the color resistor filled with the quantum dots in the fingerprint identification area, and the quantum dots are excited to emit light with corresponding colors, so that the display function is realized. Therefore, the infrared light source arranged in the fingerprint identification area can be used as a light source required by fingerprint identification and a light source for displaying the fingerprint identification area in the display stage, so that the display brightness of the fingerprint identification area in the display stage is increased, the display brightness difference between the fingerprint identification area in the display stage and other display areas is reduced, the uniformity of the display brightness of a product is improved, and the display effect is improved.
Of course, it is not necessary for any one product embodying the invention to achieve all of the technical effects described above at the same time.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a top view of a display module according to an embodiment of the invention;
FIG. 2 is a cross-sectional view of the display module of FIG. 1;
FIG. 3 is a cross-sectional view of a BB of the display module of FIG. 1;
FIG. 4 is a cross-sectional view of another AA of the display module of FIG. 1;
FIG. 5 is a schematic view of an optical path when the electrochromic layer is energized;
FIG. 6 is a schematic view of an optical path of a fingerprint recognition light when the electrochromic layer is not energized;
fig. 7 is a schematic diagram of a partial film layer of a color film substrate in a display module according to an embodiment of the invention;
fig. 8 is an exploded view of an electrochromic layer and a transparent electrode in a display module according to an embodiment of the invention;
fig. 9 is a schematic structural diagram of a display module according to an embodiment of the present invention, in which a transparent electrode on a first substrate is electrically connected to a second substrate;
FIG. 10 is a top view of a second substrate of the display module;
FIG. 11 is a schematic diagram showing an arrangement of infrared light sources on a third substrate;
fig. 12 is a schematic structural diagram of a fingerprint module according to an embodiment of the present invention;
FIG. 13 is a cross-sectional view of another AA of the display module of FIG. 1;
fig. 14 is a schematic structural diagram of a display device according to an embodiment of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
When a display device with a fingerprint recognition function performs fingerprint recognition, a touch main body (for example) is pressed on a light emitting surface of the display device, a finger is provided with ridges and valleys, the ridges are in contact with the surface of the display device, the valleys are not in contact with the surface of the display device, the reflectivity when light irradiates the surface of the display device corresponding to the valleys of the fingerprint and the ridges is different, further the intensity of reflected light formed at the positions of the ridges and reflected light formed at the positions of the valleys received by a fingerprint recognition component in the display device is different, and accordingly, the magnitudes of photocurrents converted by the reflected light formed at the positions of the ridges and the reflected light formed at the positions of the valleys are different. The ridges and valleys of the fingerprint can be identified according to the magnitude of the photocurrent, and fingerprint information can be identified.
Along with the pursuit of people to the comprehensive screen of electronic equipment such as cell-phones, more and more display devices set up fingerprint identification district in the display area, this fingerprint identification district plays the demonstration function in the demonstration stage, plays fingerprint identification function in the fingerprint identification stage. However, in the existing design, the fingerprint identification area is darker than the conventional display area in the display stage, so that the overall display effect is seriously affected.
Therefore, the invention improves the structures of the display module and the display device to solve the problem that when the fingerprint identification area is arranged in the display area, the display brightness difference between the fingerprint identification area and the display area is large, and the display effect is influenced.
The following detailed description will proceed with reference being made to the accompanying drawings and examples.
Fig. 1 is a top view of a display module provided in an embodiment of the invention, fig. 2 is a cross-sectional view AA of the display module in fig. 1, please refer to fig. 1 and fig. 2, and the invention provides a display module 100, which includes a display panel 10, a backlight module 20 and a fingerprint module 30, wherein the display panel 10 is located on a light-emitting surface of the backlight module 20;
the backlight module 20 comprises a backlight hole K, the backlight hole K penetrates through the backlight module 20 along a first direction D1, the fingerprint module 30 is positioned in the backlight hole K, and the first direction D1 is perpendicular to the light emitting surface of the backlight module 20;
the fingerprint module 30 includes an infrared light source 31 and a fingerprint recognition component 32, and along a first direction D1, the infrared light source 31 is located between the fingerprint recognition component 32 and the display panel 10;
the display panel 10 includes a fingerprint recognition area A2 located in the display area A0, and along a first direction D1, the fingerprint recognition area A2 overlaps the backlight hole K; in the fingerprint recognition area A2, the display panel 10 includes a plurality of color resistors 40 filled with quantum dots, and at least two color resistors 40 are filled with quantum dots of different colors.
Specifically, with continued reference to fig. 1 and fig. 2, in the display module provided by the embodiment of the invention, a display panel 10, a backlight module 20 and a fingerprint module 30 are provided, a backlight hole K is provided on the backlight module 20, and the fingerprint module 30 is located in the backlight hole K. Optionally, the backlight module 20 includes a back plate, and the back plate is bent at a position corresponding to the backlight hole K to serve as an inner wall of the backlight hole K, so as to prevent light of the backlight module 20 from leaking into the backlight hole K. The fingerprint module 30 includes a fingerprint identification component 32 and an infrared light source 31, the infrared light source 31 is located between the fingerprint module 30 and the display panel 10, and in the fingerprint identification stage, the infrared light emitted by the infrared light source 31 is emitted to the light emitting surface of the display panel 10 to reach the position where the touch subject is located. Optionally, the fingerprint recognition component 32 comprises an infrared sensor for receiving infrared light reflected via the touching body during the fingerprint recognition phase.
The area corresponding to the position of the backlight hole K in the display area A0 is a fingerprint identification area A2, and the fingerprint identification area A2 is integrated in the design mode of the display area, so that the comprehensive screen design of the product is realized. In the fingerprint identification stage, the light emitted by the infrared light source 31 is emitted to the light emitting surface of the display panel 10, and the part of the light is reflected by the touch body and then emitted to the fingerprint module 30, so that fingerprint identification is realized. In particular, in the fingerprint recognition area A2, the display panel 10 includes a plurality of color resistors 40 filled with quantum dots, and at least two color resistors 40 are filled with quantum dots of different colors. In the display stage, the infrared light emitted by the infrared light source 31 is emitted to the color resistor 40 filled with the quantum dots in the fingerprint identification area A2, and the quantum dots are excited to emit light rays with corresponding colors, so that the display function is realized. Thus, the infrared light source 31 arranged in the fingerprint identification area A2 can be used as a light source required by fingerprint identification and a light source for displaying the fingerprint identification area A2 in the display stage, which is favorable for increasing the display brightness of the fingerprint identification area A2 in the display stage, reducing the display brightness difference between the fingerprint identification area A2 and other display areas A0 in the display stage, and further is favorable for improving the display brightness uniformity of products and improving the display effect.
It should be noted that, fig. 1 only illustrates the display module having a rectangular structure as an example, and in other embodiments of the present invention, the display module may be configured to have other shapes, such as a rounded rectangle, a circle, an ellipse, or other shapes including an arc structure, according to practical needs, which is not particularly limited in the present invention. The location and shape of the fingerprint recognition area A2 in fig. 1 is also only illustrative, and this embodiment only shows an embodiment in which the fingerprint recognition area A2 is disposed in the display area A0 near the lower border of the display module, and in other embodiments of the present invention, the fingerprint recognition area A2 may be disposed in any other possible location in the display area A0. In addition, the shape and number of the fingerprint recognition areas A2 may be set according to actual needs, fig. 1 only illustrates that one fingerprint recognition area A2 is included in the display module, and the outline of the fingerprint recognition area A2 is rectangular, and in some other embodiments of the present invention, the shape of the fingerprint recognition area A2 may be set to be oval or circular, or other feasible shapes.
Fig. 2 shows a relative positional relationship among the display panel 10, the backlight module 20 and the fingerprint module 30, and does not limit the actual film structures of the display panel 10, the backlight module 20 and the fingerprint module 30. Fig. 3 is a cross-sectional view of a BB of the display module of fig. 1, and this embodiment shows a film structure of a region of the display device where the fingerprint recognition area A2 is not provided, alternatively, the display panel 10 provided in the embodiment of the present invention is a liquid crystal display panel 10, the backlight module 20 may be embodied as a direct type backlight module 20 or a side-in type backlight module 20, and specific film structures of the display panel 10 and the backlight module 20 in the non-fingerprint recognition area may refer to structures of the display panel 10 and the backlight module 20 in the prior art, which will not be described in detail herein.
Optionally, in the fingerprint identification area A2, the color resistor 40 included in the display panel 10 is a transparent color resistor, and the quantum dots are filled in the transparent color resistor. In the fingerprint recognition stage, a part of infrared light emitted by the infrared light source 31 is emitted to the touch body, and the light reflected by the touch body passes through the color resistor 40 and is emitted to the fingerprint recognition component 32. According to the embodiment of the invention, the color resistance of the fingerprint identification area A2 is set to be transparent, and the light reflected by the touch main body can be more emitted to the fingerprint identification component 32 after passing through the transparent color resistance, so that the quantity of the light which can be sensed by the fingerprint identification component 32 is increased, and the sensitivity of the fingerprint identification process is further improved.
Optionally, referring to fig. 2 and fig. 3, in the display module provided by the embodiment of the invention, the display panel 10 includes a color film substrate 11 and an array substrate 12 which are oppositely disposed, and a liquid crystal 13 is filled between the color film substrate 11 and the array substrate 12, wherein the color film substrate 11 includes a first substrate 01, in a conventional display area A1 (other areas except for a fingerprint identification area in the display area), the color film substrate 11 includes a black matrix BM disposed on the first substrate 01, the black matrix BM defines a plurality of pixel openings, and color resistors, for example, red color resistors, green color resistors, blue color resistors and the like are respectively filled in different pixel openings, and optionally, light rays of the backlight module 20 are white light, and when the white light is directed to the color resistors of different colors, the white light correspondingly emits light rays of different colors, so as to realize a normal color display function of the conventional display area A0. In the display area A0 corresponding to the fingerprint identification area A2, the color resistances are designed differently, the introduced color resistances are quantum dot color resistances, and the quantum dot color resistances can emit light rays with corresponding colors under the excitation of infrared light rays.
In order to ensure that the light reflected by the touch body can be transmitted to the fingerprint recognition device 32 more during the fingerprint recognition process, the present invention may also not provide a black matrix BM in the fingerprint recognition area A2, for example, please refer to fig. 4, fig. 4 is a cross-sectional view of another AA of the display module in fig. 1, and this embodiment shows a scheme in which the electrochromic layer 50 is provided in the fingerprint recognition area A2 without providing a black matrix.
With continued reference to fig. 4, in an alternative embodiment of the present invention, the display panel 10 includes the first substrate 01, and the color resistor 40 is located on a side of the first substrate 01 facing the backlight module 20; in the fingerprint identification area A2, the display panel 10 includes an electrochromic layer 50 disposed on a side of the first substrate 01 facing the backlight module 20, the electrochromic layer 50 includes an opening area, and the color resistor 40 covers the opening area; the electrochromic layer 50 assumes a black color in the energized state and a transparent state in the non-energized state.
Specifically, in the fingerprint recognition area A2, the setting of the black matrix is canceled, but the electrochromic layer 50 is disposed on the side of the first substrate facing the backlight unit 20, the electrochromic layer 50 defines a plurality of opening areas, and the color resists 40 in the fingerprint recognition area A2 cover the opening areas. Optionally, the electrochromic layer 50 comprises an electrochromic material that undergoes a stable, reversible color change under the influence of an applied electric field. In the present invention, the electrochromic layer 50 is black in the energized state and transparent in the non-energized state. In this way, in the display stage, the electrochromic layer 50 can be electrified to be black to function as a black matrix BM, for example, refer to fig. 5, so as to avoid the problem of light leakage between the color resistances corresponding to the quantum dots of different colors, wherein fig. 5 is a schematic view of an optical path when the electrochromic layer 50 is electrified. In the fingerprint recognition stage, an electric field may not be applied to the electrochromic layer 50 to make the electrochromic layer 50 appear in a transparent state, for example, please refer to fig. 6, and a part of light reflected by the touch body can be emitted to the fingerprint recognition component 32 through the electrochromic layer 50 in the transparent state, so that the amount of light sensed by the fingerprint recognition component 32 is greatly increased, and thus the sensitivity of the fingerprint recognition process is more advantageously improved, wherein fig. 6 is a schematic diagram of an optical path of the fingerprint recognition light when the electrochromic layer 50 is not energized.
Optionally, the electrochromic layer 50 provided by embodiments of the present invention may include IrO 2 The plating can be performed on the first substrate by CVD (Chemical Vapor Deposition ) or PVD (Physical Vapor Deposition, physical vapor deposition) or the like.
Fig. 7 is a partial film layer structure diagram of a color film substrate in a display module provided by an embodiment of the invention, where the embodiment shows a film layer structure of a fingerprint identification area A2 and a portion of a conventional display area A0 adjacent to the fingerprint identification area A2.
Referring to fig. 7, in an alternative embodiment of the present invention, in the fingerprint recognition area A2, the display panel 10 includes a plurality of transparent electrodes 60, and along the first direction D1, the transparent electrodes 60 are located between the first substrate 01 and the electrochromic layer 50, and the transparent electrodes 60 are electrically connected to the electrochromic layer 50.
Specifically, to achieve the provision of an electric field to the electrochromic layer 50, the present application introduces a transparent electrode 60 between the electrochromic layer 50 and the first substrate 01, optionally the transparent electrode 60 is in direct contact with the electrochromic layer 50. When an electrical signal is provided to the transparent electrode 60, the electrical signal will be able to conduct through the transparent electrode 60 to the electrochromic layer 50, rendering the electrochromic layer 50 black. When the electrical signal applied to the transparent electrode 60 is canceled, the electrochromic layer 50 is accordingly not affected by the electrical signal, and thus assumes a transparent state, thereby satisfying the need to power the electrochromic layer 50 under different use conditions. In addition, in the present invention, when the electrode for supplying the electric signal to the electrochromic layer 50 is provided as the transparent electrode 60, the light reflected through the touch body can smoothly pass through the transparent electrode 60 and the transparent electrochromic layer 50 to reach the fingerprint recognition module 32 in the fingerprint recognition stage, and thus the amount of fingerprint recognition light is not or hardly affected even if the transparent electrode 60 is introduced, thus being advantageous in ensuring the sensitivity of fingerprint recognition.
Fig. 8 is an exploded schematic view of the electrochromic layer 50 and the transparent electrode 60 in the display module according to the embodiment of the invention, and referring to fig. 7 and 8, optionally, in the fingerprint recognition area A2, the transparent electrode 60 layer is overlapped with the electrochromic layer 50 along the first direction D1. Thus, in the fingerprint identification stage, the electrical signal on the transparent electrode 60 layer can be reliably transmitted to the electrochromic layer 50, so that the electrochromic layer 50 is ensured to be in a transparent state in the fingerprint identification stage, and shielding of fingerprint identification light is avoided.
With continued reference to fig. 8, in an alternative embodiment of the invention, the transparent electrodes 60 are electrically connected. When the transparent electrodes 60 providing the electrical signals to the electrochromic layers 50 of the fingerprint identification area A2 are electrically connected, each transparent electrode 60 will present an equipotential state, and the power supply to all the transparent electrodes 60 can be realized by adopting the same first electrical connection terminal 71, so that the state change of the electrochromic layers 50 of the fingerprint identification area A2 can be uniformly controlled, and the control process of the display module to the electrochromic layers 50 is facilitated to be simplified.
Fig. 9 is a schematic structural diagram showing that the transparent electrode 60 on the first substrate 11 and the second substrate 12 are electrically connected in the display module according to the embodiment of the invention, and referring to fig. 2, 7, 8 and 9, in an alternative embodiment of the invention, the display panel 10 includes a first substrate 11 and a second substrate 12 disposed opposite to each other, and the first substrate 11 includes a first substrate 01; the first substrate 11 further includes a first electrical connection terminal 71, and the transparent electrodes 60 are electrically connected to the first electrical connection terminal 71; the second substrate 12 includes a second electrical connection terminal 72, and the first electrical connection terminal 71 and the second electrical connection terminal 72 are electrically connected by a conductive paste 73.
Optionally, the first substrate 11 in the display module is a color film substrate, the second substrate 12 is an array substrate, and the liquid crystal 13 is filled between the first substrate 11 and the second substrate 12. In order to realize the transmission of an electrical signal to the transparent electrode 60, the transparent electrode 60 is electrically connected with the first electrical connection terminal 71, and the first electrical connection terminal 71 is electrically connected with the second electrical connection terminal 72 located on the second substrate 12 through the conductive adhesive 73, so that in the display stage, the electrical signal is transmitted to the transparent electrode 60 through the second electrical connection terminal 72, the conductive adhesive 73 and the first electrical connection terminal 71 in sequence, the function of transmitting the electrical signal from the second substrate 12 to the transparent electrode 60 on the first substrate 11 is realized, and the state of the electrochromic layer 50 is controlled in different stages.
Alternatively, the conductive paste 73 connecting the first electrical connection terminal 71 on the first substrate 11 and the second electrical connection terminal 72 on the second substrate 12 may be selected as a conductive silver paste.
Fig. 10 is a top view of a second substrate 12 in a display module, and referring to fig. 9 and 10, alternatively, the size of a first substrate 11 is slightly smaller than that of the second substrate 12, a binding area BD is disposed on a region of the second substrate 12, which does not overlap with the first substrate 11, in an alternative embodiment of the present invention, the second substrate 12 includes a binding area BD and a plurality of conductive pads P located in the binding area BD, and the second electrical connection terminal 72 is electrically connected to at least one conductive pad P, and the binding area BD is used for binding a control chip IC or a flexible circuit board shown in fig. 1, for example.
Optionally, at least part of the chips on the display panel 10 are provided by a control chip IC, and the control chip may be directly bound to the binding area BD, where the control chip is electrically connected to the conductive pad P of the binding area BD, so as to further realize electrical connection with the display panel 10; in addition, the binding area BD can be bound with a flexible circuit board, and the control chip is bound on the flexible circuit board, at this time, the flexible circuit board is electrically connected with the conductive pad P of the binding area BD, and the signal of the control chip is electrically connected with the display panel 10 through the flexible circuit board and the conductive pad P.
In the embodiment of the invention, the second electrical connection terminal 72 is electrically connected with the conductive pad P of the binding area BD, so that the control chip can provide an electrical signal to the second electrical connection terminal 72 through the conductive pad P, and then transmit the electrical signal to the electrochromic layer 50 on the first substrate 11 through the conductive adhesive 73 and the first electrical connection terminal 71, thereby realizing the control of the state of the electrochromic layer 50.
Optionally, referring to fig. 2 and 8 to 10, the first electrical connection terminal 71 on the first substrate 11 is disposed on a side of the first substrate 11 near the binding area BD, and the fingerprint recognition area A2 may also be disposed on a side of the display area A0 near the binding area BD, so that the distance between the transparent electrode 60 and the first electrical connection terminal 71 can be reduced, the length of the wiring between the transparent electrode 60 and the first electrical connection terminal 71 can be reduced, and the difficulty of the wiring between the transparent electrode 60 and the first electrical connection terminal 71 can be reduced, so as to facilitate the control chip to transmit the electrical signal to the transparent electrode 60. Further, when the wiring length between the transparent electrode 60 and the first electrical connection terminal 71 becomes small, it is also advantageous to reduce the transmission path of the electrical signal, so that the electrochromic layer 50 can be quickly converted into a transparent state in the fingerprint recognition stage.
With continued reference to fig. 2, in an alternative embodiment of the present invention, the display module further includes a third substrate 33 electrically connected to the infrared light source 31, and along the first direction D1, the third substrate 33 is located between the infrared light source 31 and the fingerprint recognition component 32, and the third substrate 33 is a transparent substrate.
Specifically, in the fingerprint module 30 provided by the embodiment of the invention, the infrared light source 31 is bound on the third substrate 33, and along the first direction D1, the infrared light source 31 and the fingerprint recognition component 32 are respectively disposed on two sides of the third substrate 33, and the infrared light source 31 is closer to the display panel 10 than the fingerprint recognition component 32. Optionally, a driving circuit formed by circuit elements is disposed on the third substrate 33, and the infrared light source 31 is electrically connected to the driving circuit for driving the infrared light source 31 to emit light. In particular, in the present invention, the third substrate 33 is configured as a transparent substrate, and in the fingerprint recognition stage, the light reflected by the touch body after passing through the color resist and electrochromic layer 50 can be smoothly emitted to the fingerprint recognition component 32 through the transparent substrate, which is also beneficial to increasing the amount of light that can be received by the fingerprint recognition component 32 and improving the fingerprint recognition sensitivity.
Fig. 11 is a schematic diagram showing an arrangement of the infrared light source 31 on the third substrate 33, and in an alternative embodiment of the present invention, referring to fig. 2 and 11, the infrared light source 31 includes a plurality of infrared light emitting elements 310, and the infrared light emitting elements 310 are uniformly arranged on the third substrate 33.
It can be understood that, in the embodiment of the present invention, since the infrared light source 31 and the third substrate 33 are both disposed in the backlight hole K, the shape of the third substrate 33 is adapted to the shape of the backlight hole K, and when the backlight hole K has a circular structure, the third substrate 33 may be disposed in a circular structure; when the backlight hole K has a rectangular structure, the third substrate 33 may be disposed in a rectangular structure. The embodiment of fig. 11 is illustrated by taking a third substrate 33 of rectangular configuration as an example. The infrared light emitting elements 310 are uniformly arranged on the transparent substrate, specifically, the distance between any two adjacent infrared light emitting elements 310 is equal along the arrangement direction of the infrared light emitting elements 310, for example, in fig. 11, a mode in which the infrared light emitting elements 310 are arranged in a matrix is illustrated. Alternatively, the infrared light emitting elements 310 are uniformly arranged in the fingerprint recognition area A2. In this way, in the display stage, the light emitted by the infrared light emitting element 310 can be uniformly directed to the fingerprint recognition area A2, so that the display brightness of the fingerprint recognition area A2 is more uniform. Note that fig. 11 only exemplifies 5*4 infrared light emitting elements 310 on the third substrate, and does not represent the number of infrared light emitting elements actually provided on the third substrate 33.
With continued reference to FIG. 11, in an alternative embodiment of the present invention, there is a first spacing G between any two adjacent infrared light emitting elements 310, the first spacing G having a width D of 60 μm and D and 200 μm along the direction of arrangement of the two adjacent infrared light emitting elements 310.
Specifically, referring to fig. 2 and 11, in the fingerprint recognition stage, the light reflected by the touch body is blocked by the infrared light emitting elements 310 when being transmitted to the infrared light source region, and is directed to the fingerprint recognition component 32 through the region of the first interval G between the infrared light emitting elements 310. If the width of the first interval G is too small, for example, less than 60 μm, the infrared light emitting elements 310 are too dense, so that a large portion of fingerprint light is blocked, and only a small amount of light can be transmitted to the fingerprint recognition component 32, which is not beneficial to improving the sensitivity of fingerprint recognition. However, if the width of the first interval G is set to be larger, for example, greater than 200 μm, the arrangement of the infrared light emitting elements 310 will be sparse, and the amount of light that the infrared light emitting elements 310 can provide to the fingerprint recognition area A2 may be insufficient during the display stage, so that the fingerprint recognition area A2 and the conventional display area A0 still have display brightness differences. Therefore, the width of the first interval G between two adjacent infrared light emitting elements 310 is set to be 60 μm less than or equal to D less than or equal to 200 μm, the width of the first interval G can ensure that most of the light reflected by the touch main body in the fingerprint recognition stage can be transmitted to the fingerprint recognition component 32 through the first interval G, so that the quantity of the light which can be received by the fingerprint recognition component 32 is improved, and the fingerprint recognition sensitivity is improved; in addition, the width of the first interval G is set to be in the above range, so that the arrangement density of the infrared light emitting elements 310 can meet the requirement of the light quantity required by the fingerprint identification area A2 in the display stage, so that the display brightness of the fingerprint identification area A2 is consistent or tends to be consistent with the display brightness of the conventional display area A0, which is beneficial to improving the overall display brightness uniformity of the display device, and further is beneficial to improving the display effect of the product.
Fig. 12 is a schematic structural diagram of a fingerprint module 30 according to an embodiment of the invention, which illustrates a relative positional relationship between a first interval G between the infrared light emitting elements 310 and an infrared light sensing unit in the fingerprint recognition module 32. Referring to fig. 12, in an alternative embodiment of the present invention, the fingerprint recognition module 32 includes an infrared light sensing unit S, and the infrared light sensing unit S overlaps with the first interval G along the first direction D1.
Specifically, the infrared light sensing unit S in the fingerprint recognition module 32 of the present invention is disposed corresponding to the first interval G between the infrared light emitting elements 310, that is, the infrared light sensing unit S overlaps the first interval G along the first direction D1. Since the light reflected by the touch main body can be emitted to the infrared light sensing unit S in the fingerprint identification component 32 only through the first interval G, the mode of correspondingly overlapping the infrared light sensing unit S and the first interval G can ensure that the light can be accurately emitted to the infrared light sensing unit S after passing through the first interval G, so that the phenomenon of wasting fingerprint identification light is avoided, and the accuracy and the sensitivity of fingerprint identification are improved.
In an alternative embodiment of the invention, the brightness of the infrared light source 31 is adjustable. Alternatively, the infrared light emitting element 310 may be an infrared Mini LED, and the light emitting brightness of the infrared light emitting element 310 may be adjustable. Therefore, the display brightness of the fingerprint identification area can be adjusted according to the display brightness of the display area corresponding to the non-fingerprint identification area, so that the display brightness of the fingerprint identification area and the display brightness of the conventional display area are uniform in the display stage, and further the overall display brightness uniformity of the display device is improved, and the overall display effect is improved.
Referring to fig. 1 and 2, in an alternative embodiment of the present invention, the display area A0 includes a first display area A1, and the first display area A1 and the fingerprint identification area A2 do not overlap; in the first display area A1, the display panel 10 includes a first color resist 81, a second color resist 82, and a third color resist 83; in the fingerprint identification area A2, the color resistors include a first color resistor 41, a second color resistor 42 and a third color resistor 43, wherein the first color resistor 41 is filled with first color quantum dots, the second color resistor 42 is filled with second color quantum dots, and the third color resistor 43 is filled with third color quantum dots.
Specifically, the first display area A1 mentioned in the embodiment of the present invention refers to an area of the display area A0 except for the fingerprint identification area A2, where when the first display area A1 includes a first color resistor 81, a second color resistor 82 and a third color resistor 83, the fingerprint identification area A2 also includes a color resistor filled with three color quantum dots, that is, includes a first color resistor 41 filled with the first color quantum dot, a second color resistor 42 filled with the second color quantum dot and a third color resistor 43 filled with the third color quantum dot, so that the light emitted by the infrared light source 31 can make the color resistor present the first color after exciting the quantum dot of the first color, and can make the second color resistor 42 present the second color after exciting the quantum dot of the second color, and can make the third color resistor 43 present the third color after exciting the quantum dot of the third color. The color that can be presented by the color resistor in the fingerprint identification area A2 is the same as the color that can be presented by the color resistor in the first display area A1 in the display stage, and the picture display effect that can be presented by the fingerprint identification area A2 and the first display area A1 is more consistent, so that the whole display effect of the product is more favorably improved.
Optionally, the first color, the second color and the third color may be respectively represented by red, green and blue, so as to achieve a color display effect of the display module.
Fig. 13 is a cross-sectional view of another AA of the display module of fig. 1, which illustrates another color-resistance distribution of the first display area A1 and the fingerprint recognition area A2, referring to fig. 13, in an alternative embodiment of the present invention, the display panel 10 further includes a transparent color-resistance 84 in the first display area A1; in the fingerprint identification area A2, the color resistor further includes a fourth color resistor 44, and the fourth color resistor 44 is not filled with quantum dots.
Specifically, the present embodiment shows a scheme of setting a transparent color resistor in the first display area A1, and besides the first color resistor 81, the second color resistor 82 and the third color resistor 83, the transparent color resistor is also introduced into the first display area A1, so that the display brightness of the first display area A1 is improved. Adaptively, in the fingerprint identification area A2, after the first color resistor 41 filled with the first color quantum dots, the second color resistor 42 filled with the second color quantum dots and the third color resistor 43 filled with the third color quantum dots are arranged, the invention further introduces the fourth color resistor 44 not filled with the quantum dots, so that on one hand, the colors which can be presented by the color resistors of the fingerprint identification area A2 and the first display area A1 are consistent, and on the other hand, the display brightness of the fingerprint identification area A2 in the display stage is improved to be suitable for the display brightness of the first display area A1. Therefore, the method is also beneficial to improving the uniformity of the overall display brightness of the display module and the overall display effect of the product.
Based on the same inventive concept, fig. 14 is a schematic structural diagram of a display device 200 according to an embodiment of the present invention, where the display device 200 includes the display module 100 according to any of the embodiments described above. In the invention, the infrared light source and the fingerprint module are arranged in the backlight, and in the fingerprint identification stage, the light rays emitted by the infrared light source can be used as the light rays required by fingerprint identification; in the display stage, the light rays emitted by the infrared light source can also excite the color resistors filled with the quantum dots to display corresponding colors, so that the light rays are used as light rays required for display, the display brightness difference between the fingerprint identification area and the non-fingerprint identification area is reduced, the overall display brightness uniformity of the product is improved, and the overall display effect is improved. The specific embodiments of the display device may refer to the examples of the display module set described above, and the disclosure is not repeated here.
It should be noted that, the display device 200 provided in the embodiment of the invention may be embodied as any product or component with a real function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
In summary, the display module and the display device provided by the invention at least realize the following beneficial effects:
the display module and the display device provided by the embodiment of the invention are provided with a display panel, a backlight module and a fingerprint module, wherein the backlight module is provided with a backlight hole, and the fingerprint module is positioned in the backlight hole. The fingerprint module comprises a fingerprint identification component and an infrared light source, wherein the area corresponding to the backlight hole position in the display area is the fingerprint identification area, and in the fingerprint identification stage, the light of the infrared light source is emitted to the light emitting surface of the display panel, and after being reflected by the touch main body, the part of the light is emitted to the fingerprint module, so that fingerprint identification is realized. In particular, in the fingerprint identification area, the display panel comprises a plurality of color resistors filled with quantum dots, and the colors of the quantum dots filled with at least two color resistors are different. In the display stage, light emitted by the infrared light source irradiates to the color resistor filled with the quantum dots in the fingerprint identification area, and the quantum dots are excited to emit light with corresponding colors, so that the display function is realized. Therefore, the infrared light source arranged in the fingerprint identification area can be used as a light source required by fingerprint identification and a light source for displaying the fingerprint identification area in the display stage, so that the display brightness of the fingerprint identification area in the display stage is increased, the display brightness difference between the fingerprint identification area in the display stage and other display areas is reduced, the uniformity of the display brightness of a product is improved, and the display effect is improved.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (14)
1. The display module is characterized by comprising a display panel, a backlight module and a fingerprint module, wherein the display panel is positioned on the light emitting surface of the backlight module;
the backlight module comprises a backlight hole, the backlight hole penetrates through the backlight module along a first direction, the fingerprint module is positioned in the backlight hole, and the first direction is perpendicular to the light emitting surface of the backlight module;
the fingerprint module comprises an infrared light source and a fingerprint identification component, and the infrared light source is positioned between the fingerprint identification component and the display panel along the first direction;
the display panel comprises a fingerprint identification area positioned in the display area, and the fingerprint identification area is overlapped with the backlight hole along the first direction; in the fingerprint identification area, the display panel comprises a plurality of color resistors filled with quantum dots, at least two of the color resistors are filled with quantum dots with different colors, and the quantum dots are excited by light rays emitted by the infrared light source.
2. The display module of claim 1, wherein the display panel comprises a first substrate, the color resistor being located on a side of the first substrate facing the backlight module;
in the fingerprint identification area, the display panel comprises an electrochromic layer arranged on one side of the first substrate facing the backlight module, the electrochromic layer comprises an opening area, and the color resistor covers the opening area; the electrochromic layer is black in an energized state and transparent in a non-energized state.
3. The display module of claim 2, wherein in the fingerprint recognition area, the display panel includes a plurality of transparent electrodes, the transparent electrodes are located between the first substrate and the electrochromic layer along the first direction, and the transparent electrodes are electrically connected with the electrochromic layer.
4. A display module according to claim 3, wherein each of the transparent electrodes is electrically connected.
5. A display module according to claim 3, wherein the display panel comprises a first substrate and a second substrate disposed opposite to each other, the first substrate comprising the first substrate;
the first substrate further comprises a first electric connection terminal, and the transparent electrodes are electrically connected with the first electric connection terminal;
the second substrate comprises a second electric connection terminal, and the first electric connection terminal is electrically connected with the second electric connection terminal through conductive adhesive.
6. The display module of claim 5, wherein the second substrate includes a bonding region and a plurality of conductive pads located in the bonding region, the second electrical connection terminal is electrically connected to at least one of the conductive pads, and the bonding region is used for bonding a control chip or a flexible circuit board.
7. The display module of claim 1, further comprising a third substrate electrically connected to the infrared light source, the third substrate being positioned between the infrared light source and the fingerprint recognition assembly along the first direction, the third substrate being a transparent substrate.
8. The display module of claim 7, wherein the infrared light source comprises a plurality of infrared light emitting elements, the infrared light emitting elements being uniformly arranged on the third substrate.
9. The display module according to claim 8, wherein a first interval is provided between any two adjacent infrared light emitting elements, and the width of the first interval is D, and D is 60 μm and is less than or equal to 200 μm along the arrangement direction of the two adjacent infrared light emitting elements.
10. The display module of claim 9, wherein the fingerprint recognition assembly includes an infrared light sensing unit that overlaps the first space along the first direction.
11. The display module of claim 1, wherein the infrared light source has an adjustable brightness.
12. The display module of claim 1, wherein the display area comprises a first display area, the first display area not overlapping the fingerprint identification area; in the first display area, the display panel comprises a first color resistor, a second color resistor and a third color resistor; in the fingerprint identification area, the color resistor comprises a first color resistor, a second color resistor and a third color resistor, wherein the first color resistor is filled with first color quantum dots, the second color resistor is filled with second color quantum dots, and the third color resistor is filled with third color quantum dots.
13. The display module of claim 12, wherein in the first display region, the display panel further comprises a transparent color barrier; and in the fingerprint identification area, the color resistor further comprises a fourth color resistor, and the fourth color resistor is not filled with quantum dots.
14. A display device comprising the display module of any one of claims 1 to 13.
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