CN115171168A - Electronic device - Google Patents
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- CN115171168A CN115171168A CN202210729893.8A CN202210729893A CN115171168A CN 115171168 A CN115171168 A CN 115171168A CN 202210729893 A CN202210729893 A CN 202210729893A CN 115171168 A CN115171168 A CN 115171168A
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- light
- display panel
- fingerprint sensor
- transmitting
- electronic device
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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
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
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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
- G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the application belongs to the technical field of display equipment, and particularly relates to electronic equipment. The embodiment of the application aims at solving the problem that the volume of a fingerprint sensor is large. The electronic equipment that this embodiment provided, including the light-transmitting structure that supplies light to pass in display panel's the discernment district, the lens subassembly sets up the one side that deviates from the light-emitting surface at display panel, the lens subassembly can assemble the light that comes from the discernment district, so that the light after assembling shines on fingerprint sensor, the lens subassembly can make the image that fingerprint sensor received for the image of reducing, and then reduced the regional area that fingerprint sensor is used for the formation of image, can be less with the fingerprint sensor design, in order to reduce fingerprint sensor's volume, be convenient for realize electronic equipment's miniaturization and lightweight.
Description
Technical Field
The embodiment of the application relates to the technical field of display equipment, in particular to electronic equipment.
Background
Electronic equipment, such as cell-phone, panel computer etc. generally include display panel and the fingerprint sensor that is located display panel and deviates from light-emitting surface one side, and display panel allows partial light to see through to when user's finger covers the discernment district, fingerprint sensor can receive the light that comes from user's finger, and then realize fingerprint identification.
However, in order to allow both fingers covering the display panel to be detected, the projection of the fingerprint sensor onto the display panel is designed to be large, resulting in a large volume of the fingerprint sensor.
Disclosure of Invention
The embodiment of the application provides electronic equipment, and aims to solve the problem that a fingerprint sensor is large in size
The embodiment of the application provides an electronic equipment, including display panel, display panel includes towards user's light-emitting surface, and the user can watch the image that display panel shows through light-emitting surface, and display panel still includes the back that sets up relatively with light-emitting surface. Electronic equipment still includes the fingerprint identification module, and the fingerprint identification module includes fingerprint sensor and lens subassembly, and fingerprint sensor sets up the one side that deviates from the light-emitting surface at display panel. Display panel includes the identification area, and fingerprint sensor sets up towards the identification area, including the light-transmitting structure that supplies light to pass in the identification area, comes from the light-emitting surface outside light can pass display panel through light-transmitting structure, and the light that passes display panel shines on fingerprint sensor to carry out fingerprint identification.
The lens assembly is arranged on one side of the display panel, which faces away from the light emitting surface, and the lens assembly is arranged between the fingerprint sensor and the display panel. The projection of the lens component on the display panel covers the identification area, the main optical axis of the lens component is perpendicular to the display panel, the lens component guides the light rays from the identification area to the fingerprint sensor, and the light rays from the identification area are gradually close to the main optical axis in the process of propagating towards the fingerprint sensor so as to form images on the fingerprint sensor and form a reduced image on the fingerprint sensor.
In some embodiments that may include the above embodiments, the lens assembly includes a lens body, the lens body includes a light incident surface facing the display panel and a light emitting surface facing away from the display panel, the light from the display panel enters the lens body through the light incident surface, and the light passes through the lens body and then exits through the light emitting surface. The light incident surface or the light emergent surface of the lens body is a curved surface protruding outwards, namely the lens body is a convex lens, so that the light rays are converged, and a reduced image is formed on the fingerprint sensor.
In some embodiments that may include the above embodiments, the light incident surface and the light emitting surface of the lens body are both outward convex curved surfaces. So set up, can strengthen the effect of assembling to light, and then under the same prerequisite of the degree of reducing of image, can reduce the thickness of lens body to in the miniaturization and the lightweight of realization electronic equipment.
In some embodiments, which may include the above embodiments, the distribution of the plurality of light-transmitting structures disposed in the identification area in the array in the identification area is such that the plurality of light-transmitting structures are uniformly distributed, so as to facilitate the manufacturing of the display panel.
In some embodiments that may include the foregoing embodiments, a region of the light exit surface where the light-transmitting structure is used for receiving light is a field of view of the light-transmitting structure, each light-transmitting structure includes a field of view corresponding to the light exit surface, external light corresponding to the field of view may enter the light-transmitting structure through the field of view to be detected by the light-transmitting structure, and external light outside the field of view may not enter the aperture. And the view fields corresponding to the adjacent light-transmitting structures are partially overlapped along the row direction of the light-transmitting structures arranged in the array. With the arrangement, all the fields of view are continuously arranged along the row direction, namely, no gap exists between adjacent fields of view along the row direction, so that all the fingerprint information of the finger of the user can be acquired along the row direction
In some embodiments, which may include the above embodiments, the fields of view corresponding to adjacent light-transmitting structures partially overlap along the direction of the columns in the light-transmitting structures arranged in the array. The fields of view are arranged continuously along the column direction, namely, no gap exists between adjacent fields of view along the column direction, and all fingerprint information of the finger of the user can be acquired along the column direction. According to the arrangement, the fingerprint information used by the user finger can be acquired along the row direction and the column direction, so that the complete fingerprint information of the user can be acquired, and the accuracy of fingerprint identification is improved.
In some embodiments, which may include the above embodiments, the distance between adjacent light-transmissive structures is equal along the row direction and the column direction, and the distance Z satisfies the following formula:
Z≤2 2 ×0.5×M
wherein M is the radius of the field of view, and satisfies the following conditions:
wherein the content of the first and second substances,
theta is a visual angle of the light-transmitting structure, b is a thickness of the light-transmitting structure along a direction perpendicular to the display panel, d is a diameter of the light-transmitting structure, and a is a distance between the light-transmitting structure and the light incident surface.
In some embodiments, which may include the above embodiments, the imaging focal length f of the lens body, the distance v between the lens body and the fingerprint sensor, and the distance u between the lens body and the light exit surface satisfy the following formula:
in some embodiments, which may include the above embodiments, the display panel includes:
the pixel limiting layer is provided with a plurality of pixel openings in an array mode, and a light-emitting material layer is arranged in each pixel opening; a plurality of holes are also arranged on the pixel limiting layer at intervals, and each hole is positioned between two adjacent pixel openings;
the array substrate and the pixel limiting layer are arranged in a stacked mode, the array substrate comprises a metal pattern layer, and projections of the holes on the array substrate are located in hollow-out areas of the metal pattern layer; the light-transmitting structure comprises a hole.
In some embodiments, which may include the above embodiments, the display panel includes:
the color film substrate is provided with a plurality of light transmission openings in an array manner, and light filters are arranged in the light transmission openings; a plurality of holes are arranged on the color film substrate at intervals, and each hole is positioned between two adjacent light-transmitting openings;
the liquid crystal layer is arranged with the color film substrate in a laminating way, the liquid crystal layer comprises a plurality of hole structures, and the projection of each hole structure on the color film substrate covers one hole;
the array substrate comprises a metal pattern layer, the projection of the holes on the array substrate is located in the hollow areas of the metal pattern layer, and the light-transmitting structure comprises the holes and a hole structure.
The embodiment of the application provides electronic equipment, including the light-transmitting structure that supplies light to pass in display panel's the discernment district, the lens subassembly sets up the one side that deviates from the light-emitting surface at display panel, the lens subassembly can assemble the light that comes from the discernment district, so that the light after assembling shines on fingerprint sensor, the lens subassembly can make the image that fingerprint sensor received for reducing like, and then reduced fingerprint sensor and be used for the regional area of formation of image, can be less with fingerprint sensor design, in order to reduce fingerprint sensor's volume, be convenient for realize electronic equipment's miniaturization and lightweight.
Drawings
Fig. 1 is a first schematic structural diagram of an electronic device according to an embodiment of the present disclosure;
FIG. 2 is a first schematic structural diagram of an electronic device in the related art;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 4 is a first schematic view illustrating a display panel of an electronic device according to an embodiment of the present disclosure;
fig. 5 is a first top view of an array substrate in an electronic device according to an embodiment of the present disclosure;
fig. 6 is a second top view of an array substrate in an electronic device according to an embodiment of the present disclosure;
fig. 7 is a second schematic structural diagram of a display panel in an electronic device according to an embodiment of the present application;
FIG. 8 is a perspective view of a light-transmissive structure on a substrate in an electronic device according to an embodiment of the present disclosure;
FIG. 9 is a second schematic structural diagram of an electronic device according to the related art;
FIG. 10 is a third schematic structural diagram of an electronic device in the related art;
FIG. 11 is a fourth schematic structural diagram of an electronic device in the related art;
fig. 12 is a schematic structural diagram of a display panel in an electronic device according to an embodiment of the present application;
FIG. 13 is a diagram illustrating a field of view of a light-transmissive structure in an electronic device over a light exit surface according to an embodiment of the present disclosure;
fig. 14 is a schematic structural diagram of a third electronic device according to an embodiment of the present application.
Description of reference numerals:
1: an electronic device;
10: an electronic device;
20: a finger;
30: a housing;
100: a display panel;
101: a light-transmitting structure;
102: a field of view;
110: an identification area;
120: a light exit surface;
130: a back side;
140: a light emitting layer;
141: a pixel defining layer;
142: a pixel opening;
143: a layer of light emitting material;
150: an array substrate;
151: a substrate;
152: an active layer;
153: a gate electrode;
154: a source electrode;
155: a drain electrode;
156: a lower polar plate;
157: an upper polar plate;
160: a second electrode layer;
170: a color film substrate;
171: a light-transmitting opening;
172: an optical filter;
180: a hollow-out area;
181: scanning lines;
182: a gate line;
190: a liquid crystal layer;
200: a lens assembly;
201: a light incident surface;
202: a light-emitting surface;
300: a fingerprint sensor;
400: a microlens;
500: a convex lens;
600: an acoustic wave detector;
700: an image sensor.
Detailed Description
Referring to fig. 1, an electronic device 1 such as a mobile phone and a tablet computer generally includes a display panel 100, as shown in fig. 2, the display panel 100 includes a light-emitting surface 120 for displaying an image, and a back surface 130 opposite to the light-emitting surface 120, and the electronic device 10 further includes a fingerprint sensor 300, and the fingerprint sensor 300 is disposed facing the back surface 130. The display panel 100 includes an identification area 110 as shown in fig. 1, and the identification area 110 is used for fingerprint detection. Specifically, the display panel 100 in the identification area 110 includes a plurality of light-transmitting structures 101 disposed at intervals, and the light-transmitting structures 101 allow light incident from a side of the light-emitting surface 120 of the display panel 100 to pass through and to be emitted from the back surface 130 of the display panel 100, so as to be received by the fingerprint sensor 300.
The surface of the finger 20 includes raised structures and recessed structures, which form lines, and the lines of each individual finger are unique, i.e., different lines of fingers are different for different individuals. When detecting, the user brings the finger 20 close to the identification area 110, the corresponding display panel 100 in the identification area 110 emits light, the light is reflected at the finger 20, the reflected light passes through the display panel 100 through the light-transmitting structure 101, and then the fingerprint sensor 300 acquires the light from the finger 20 to acquire the grain image of the finger 20, thereby realizing fingerprint identification.
However, the identification area 110 is generally designed to be large, and in order to allow the surface of the finger 20 covered on the identification area 110 to be detected, the vertical projection of the fingerprint sensor 300 on the display panel 100 can be made to cover the identification area 110. As such, the fingerprint sensor 300 is bulky, and it is difficult to achieve miniaturization and weight reduction of the electronic apparatus 1. In addition, the large volume of the fingerprint sensor 300 also results in a smaller area of the finger 20 recognized by the fingerprint sensor 300 per unit volume, which in turn results in a lower utilization of the fingerprint sensor 300.
To this, this application embodiment provides an electronic equipment, through set up the lens subassembly between display panel and fingerprint sensor to assemble the light from display panel, and become the image that reduces on fingerprint sensor, reduced the regional area of accepting light among the fingerprint sensor, and then reduced fingerprint sensor's volume, be convenient for realize electronic equipment's miniaturization and lightweight. In addition, the small-size fingerprint sensor also increases the finger area identified by the unit-size fingerprint sensor, so that the utilization rate of the fingerprint sensor is improved.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
As shown in fig. 1, an electronic device 1 is provided in the embodiment of the present application, where the electronic device 1 may include a mobile phone, a tablet computer, a smart watch, and the like, and the embodiment does not limit this.
The electronic device 1 includes a housing 30, and an electronic device 10 mounted on the housing 30, the electronic device 10 includes a display panel 100, and the display panel 100 may be fixed on the housing 30. The display panel 100 may be a Liquid Crystal Display (LCD) panel, an Organic Light Emitting Diode (OLED) display panel, and the like, which is not limited in this embodiment.
Referring to fig. 3, the display panel 100 includes a light exit surface 120 facing a user, the user can view an image displayed by the display panel 100 through the light exit surface 120, and the display panel 100 further includes a back surface 130 disposed opposite to the light exit surface 120. The electronic device 10 further includes a fingerprint identification module, which includes a fingerprint sensor 300, the fingerprint sensor 300 is disposed on a side of the display panel 100 departing from the light-emitting surface 120, that is, the fingerprint sensor 300 is disposed facing the back surface 130 of the display panel 100, and has a certain distance from the back surface 130. The display panel 100 includes an identification area 110, a projection of the fingerprint sensor 300 on the display panel 100 covers the identification area 110, the identification area 110 includes a light-transmitting structure 101 for light to pass through, light from outside the light-emitting surface 120 can pass through the display panel 100 through the light-transmitting structure 101, and the light passing through the display panel 100 is irradiated on the fingerprint sensor 300 to form an image on the fingerprint sensor 300 for fingerprint identification.
With continued reference to fig. 1, it will be appreciated that the identification area 110 is used for fingerprint identification, and that the identification area 110 may be located within the display area of the display panel 100. As an example of the orientation shown in fig. 1, the identification area 110 may be located near the bottom end of the display panel 100, so that when the user holds the electronic device 1, a finger 20, such as a thumb, can easily cover the identification area 110 to facilitate fingerprint detection. Also, at the time of detection, the user can still view the image on the display panel 100 through the upper region of the display panel 100. Of course, in this embodiment, the identification area 110 may also be located at other positions of the display panel 100, which is not limited in this embodiment.
With reference to fig. 3, in the above implementation manner, the light-transmitting structure 101 is located in the identification area 110, the light-transmitting structure 101 can implement pinhole imaging, and the light-transmitting structure 101 forms a path for light to pass through in the identification area 110, that is, light from outside the light-emitting surface 120 can pass through the display panel 100 through the light-transmitting structure 101, and then is emitted from the back surface 130. The light-transmitting structure 101 is not limited in this embodiment, as long as the light-transmitting structure 101 can form a path through which light passes through the display panel 100, thereby realizing pinhole imaging.
The following is an illustration of a specific composition of the light-transmitting structure 101:
referring to fig. 4, in an implementation manner that the display panel 100 is an OLED display panel, the display panel 100 includes an array substrate 150 and a light emitting layer 140 that are stacked, the light emitting layer 140 includes a pixel defining layer 141, a plurality of pixel openings 142 are arranged in an array on the pixel defining layer 141, a light emitting material layer 143 is arranged in each pixel opening 142, a first electrode layer is stacked on a side of the pixel defining layer 141 away from the array substrate 150, a second electrode layer 160 is stacked on a side of the pixel defining layer 141 close to the array substrate 150, and the light emitting material layer 143 is located between the first electrode layer and the second electrode layer 160. The first electrode layer may be a whole layer structure, the second electrode layer 160 is multiple, and a projection of each second electrode layer 160 on the pixel defining layer 141 covers one pixel opening 142. In addition, the array substrate 150 includes a base 151 and a plurality of pixel circuits arranged in an array on the base 151. The display panel 100 includes a plurality of pixels, each pixel includes a pixel circuit and the second electrode layer 160 electrically connected to the pixel circuit, so that the pixel circuit controls the second electrode layer 160 to be charged, a voltage difference is formed between the second electrode layer 160 and the first electrode layer, and the light-emitting material layer 143 corresponding to the second electrode layer 160 emits light.
The pixel circuit includes a plurality of thin film transistors 158 (TFTs) and a capacitor structure 159. The number of thin film transistors 158 and the number of capacitor structures 159 are not limited in the embodiments of the present application, and the pixel circuits may be 2T1C, 7T1C, and the like, for example. At least one thin film transistor 158 in the pixel circuit is electrically connected to the second electrode layer 160, and each second electrode layer 160 corresponds to one pixel opening 142. The thin film transistor 158 is used for transmitting an electrical signal to the second electrode layer 160 to form a voltage between the second electrode layer 160 and the first electrode layer, so as to drive the light-emitting material layer 143 in the pixel opening 142 corresponding to the second electrode layer 160 to emit light.
With reference to fig. 4, the array substrate 150 includes a substrate 151, and an active layer 152, a first metal layer M1, a second metal layer M2, and a third metal layer M3 stacked on the substrate 151, wherein interlayer dielectric layers are disposed between the active layer 152 and the first metal layer M1, between the first metal layer M1 and the second metal layer M2, and between the second metal layer M2 and the third metal layer M3. The thin film transistor 158 includes an active layer 152, a gate electrode 153, a source electrode 154, and a drain electrode 155, wherein the gate electrode 153 and a lower plate 156 of the capacitor structure 159 may be disposed in a first metal layer M1, that is, the gate electrode 153 and the lower plate 156 are formed after etching the first metal layer M1, the source electrode 154 and the drain electrode 155 may be disposed in a third metal layer M3, that is, the source electrode 154 and the drain electrode 155 are formed after etching the third metal layer M3, and an upper plate 157 of the capacitor structure 159 may be disposed in a second metal layer M2, that is, the upper plate 157 is formed after etching the second metal layer M2.
Referring to fig. 5, the array substrate 150 further includes a scan line 181 (data line DL) and a gate line 182 (get line GL) electrically connected to the thin film transistor 158 in the pixel circuit, where the scan line 181 may be disposed on the first metal layer M1, the second metal layer M2, or the third metal layer M3, and similarly, the gate line 182 may also be disposed on the first metal layer M1, the second metal layer M2, or the third metal layer M3. It should be noted that the scan lines 181 and the gate lines 182 are required to be located on different layers to avoid the circuit density of a single metal layer from being too high.
With continued reference to fig. 4, in the above implementation, the pixel defining layer 141 may be an opaque film layer to prevent light emitted from the light emitting material layers 143 in the adjacent pixel openings 142 from crosstalk with each other. The pixel defining layer 141 is provided with a plurality of holes at intervals, and the holes are disposed outside the pixel openings 142, that is, each hole is disposed between adjacent pixel openings 142. The first metal layer M1, the second metal layer M2, and the third metal layer M3 in the array substrate 150 are metal pattern layers in the array substrate 150, the metal pattern layers have a hollow area 180 as shown in fig. 5, and the hollow area 180 is an area not covered by the first metal layer M1, the second metal layer M2, and the third metal layer M3 in the projection on the substrate 151. The projection of the holes on the array substrate 150 is located in the hollow-out area 180, that is, in the projection on the substrate 151, the first metal layer M1, the second metal layer M2 and the third metal layer M3 do not cover the holes. Thus, the holes and the hollow-out areas 180 of the metal pattern layer constitute the light-transmitting structure 101 shown in fig. 5, so that light outside the light-emitting surface 120 can pass through the array substrate 150 after passing through the holes, and then is emitted from the back surface 130 of the display panel 100.
Illustratively, as can be seen from the above description, the display panel 100 includes a scan line 181 and a gate line 182 that cross in a horizontal direction and a vertical direction, and a pixel circuit electrically connected to the scan line 181 and the gate line 182, where the pixel circuit includes a thin film transistor 158 and a capacitor structure 159, and in order to make a hole avoid the first metal layer M1, the second metal layer M2, and the third metal layer M3, a projection of the hole on the substrate 151 may not coincide with a projection of the scan line 181, the gate line 182, the thin film transistor 158, and the capacitor structure 159.
In other implementations, a plurality of holes are disposed at intervals on the pixel defining layer 141, the holes are disposed outside the pixel openings 142, as shown in fig. 6, projections of the holes on the substrate 151 overlap with projections of the first metal layer M1, the second metal layer M2, and/or the third metal layer M3 on the substrate 151, the metal layers can prevent a portion of light from the holes from passing through, and the rest of light can pass through the array substrate 150 and then be emitted from the back surface 130 of the display panel 100 to form the light-transmitting structure 101. That is, the projections of the first metal layer, the second metal layer M2, and the third metal layer M3 on the substrate 151 only cover a portion of the hole, so as to form the light-transmitting structure 101 shown in fig. 6.
With reference to fig. 4, in the foregoing implementation manner, the display panel 100 further includes a color filter substrate 170 located on a side of the light emitting layer 140 away from the array substrate 150, the color filter substrate 170 is provided with a plurality of light-transmitting openings 171 in an array, a projection of each light-transmitting opening 171 on the pixel defining layer 141 covers the pixel opening 142, and a filter 172 is disposed in each light-transmitting opening 171, so that light from the pixel opening 142 can be filtered through the filter 172, so as to implement color display. The pixel defining layer 141 may be a transparent film layer, and correspondingly, the color film substrate 170 needs to be an opaque film layer to prevent light in the adjacent transparent openings 171 from crosstalk; it can be understood that the holes are required to be disposed on the color filter substrate 170 and located between the adjacent light-transmitting openings 171.
Referring to fig. 7, in an implementation manner that the display panel 100 is an LCD display panel, the display panel 100 includes an array substrate 150, a liquid crystal layer 190 and a color film substrate 170, the liquid crystal layer 190 is located between the array substrate 150 and the color film substrate 170, a first electrode layer is disposed on a side of the liquid crystal layer 190 away from the array substrate 150, a plurality of second electrode layers 160 are disposed in an array on a side of the liquid crystal layer 190 close to the array substrate 150, the array substrate 150 includes a pixel circuit, the pixel circuit includes a plurality of thin film transistors 158 and a capacitor structure 159, one thin film transistor 158 is electrically connected to one second electrode layer 160, the thin film transistor 158 is configured to transmit an electrical signal to the second electrode layer 160 to form a voltage between the second electrode layer 160 and the first electrode layer, so that liquid crystal molecules between the second electrode layer 160 and the first electrode layer are deflected to control a light transmittance between the second electrode layer 160 and the first electrode layer.
The color filter substrate 170 is provided with a plurality of light-transmitting openings 171, a projection of each light-transmitting opening 171 on the array substrate 150 covers a projection of one second electrode layer 160 on the array substrate 150, and a filter 172 is arranged in each light-transmitting opening 171. When the liquid crystal molecules between the second electrode layer 160 and the first electrode layer deflect to allow light to pass, the light is emitted from the filter 172, and thus color display can be achieved.
The array substrate 150 has a structure substantially similar to that of the array substrate 150 in the OLED display panel, and is not repeated herein. In order to avoid the mutual interference of light in the adjacent light-transmitting openings 171, the color filter substrate 170 needs to be an opaque film layer, a plurality of holes are correspondingly disposed on the color filter substrate 170, each hole is located between the adjacent light-transmitting openings 171, the first metal layer M1, the second metal layer M2, and the third metal layer M3 in the array substrate 150 are metal pattern layers in the array substrate 150, each metal pattern layer has a hollow-out area 180, and the hollow-out areas 180 are areas uncovered by the first metal layer M1, the second metal layer M2, and the third metal layer M3 in the projection on the substrate 151. The projection of the holes on the array substrate 150 is located in the hollow-out area 180, that is, in the projection on the substrate 151, the first metal layer M1, the second metal layer M2 and the third metal layer M3 do not cover the holes. Thus, the holes and the hollow-out areas 180 of the metal pattern layer form the light-transmitting structure 101, so that light outside the light-emitting surface 120 can pass through the array substrate 150 after passing through the holes, and then is emitted from the back surface 130 of the display panel 100.
Further, as shown in fig. 5, the display panel 100 includes a scan line 181 and a gate line 182 that cross in a horizontal and vertical direction, and a pixel circuit electrically connected to the scan line 181 and the gate line 182, where the pixel circuit includes a thin film transistor 158 and a capacitor structure 159, and in order to make the holes capable of avoiding the first metal layer M1, the second metal layer M2, and the third metal layer M3, a projection of the holes on the substrate 151 may not coincide with a projection of the scan line 181, the gate line 182, the thin film transistor 158, and the capacitor structure 159.
In other implementations, a plurality of holes are disposed at intervals on the pixel defining layer 141, the holes are disposed outside the pixel openings 142, as shown in fig. 6, projections of the holes on the substrate 151 overlap with projections of the first metal layer M1, the second metal layer M2, and/or the third metal layer M3 on the substrate 151, the metal layers can prevent a portion of light from the holes from passing through, and the rest of light can pass through the array substrate 150 and then exit from the back surface 130 of the display panel 100 to form the light-transmitting structure 101. That is to say, the projections of the first metal layer, the second metal layer M2, and the third metal layer M3 on the substrate 151 only cover a part of the holes, so as to form the light-transmitting structure 101.
It should be noted that, in order to enable light reflected by a finger to pass through the liquid crystal layer 190, the light-transmitting structure 101 may further include a plurality of hole structures disposed on the liquid crystal layer 190, and a projection of each hole structure on the color film substrate 170 covers one hole. The hole structure may be a through hole disposed on the liquid crystal layer, and further, the through hole may be filled with a light-transmitting material. Of course, the hole structure may be a path through which light passes formed by deflecting liquid crystal molecules in a part of the liquid crystal layer. The present embodiment does not limit the pore structure.
In this embodiment, the projection shape of the light-transmitting structure 101 on the substrate 151 may be a regular shape such as a circle (or a rectangle) as shown in fig. 8, and of course, the projection shape of the light-transmitting structure 101 on the substrate may also be other irregular shapes.
With continued reference to fig. 3, the fingerprint identification module further comprises a lens assembly 200, the lens assembly 200 is disposed on a side of the display panel 100 facing away from the light exit surface 120, that is, the lens assembly 200 is disposed facing the back surface 130 of the display panel 100, and the lens assembly 200 is located between the fingerprint sensor 300 and the display panel 100. The projection of the lens assembly 200 on the display panel 100 covers the identification area 110 so that the lens assembly 200 can receive light from the identification area 110. The main optical axis of the lens assembly 200 is perpendicular to the display panel 100, the lens assembly 200 guides the light from the identification area 110 to the fingerprint sensor 300, and the light from the identification area 110 gradually approaches the main optical axis in the process of propagating to the fingerprint sensor 300, i.e. the light from the light-transmitting structure 101 is converged to the fingerprint sensor 300, and then is imaged on the fingerprint sensor 300, and the image is a reduced image.
In this embodiment, the lens assembly 200 may include a lens body 210, the lens body 210 includes an incident surface 201 facing the display panel 100 and an exit surface 202 facing away from the display panel 100, light from the display panel 100 enters the lens body 210 through the incident surface 201, and the light passes through the lens body 210 and then exits through the exit surface 202.
In some implementations, the light incident surface 201 or the light emitting surface 202 of the lens body 210 is a curved surface protruding outward, that is, the lens body 210 is a convex lens, so as to realize the converging effect on the light, and further form a reduced image on the fingerprint sensor 300.
In other implementation manners, as shown in fig. 3, the light incident surface 201 and the light emitting surface 202 of the lens body 210 are both outward convex curved surfaces, so that the light converging effect can be enhanced, and further, the thickness of the lens body 210 can be reduced on the premise that the image reduction degrees are the same, so as to achieve the miniaturization and the light weight of the electronic device 1 shown in fig. 1.
It can be understood that the image on the fingerprint sensor 300 can be a reduced image by appropriately setting the focal length of the lens body 210, the distance between the lens body 210 and the display panel 100, and the distance between the lens body 210 and the fingerprint sensor 300.
In this embodiment, the lens assembly 200 may further include a fixing structure, and the lens body 210 may be disposed on the fixing structure, and the fixing structure may be connected to the housing 30 shown in fig. 1, so as to fix the lens body 210; or the fixing structure is connected to the display panel 100, the lens body 210 may be fixed.
The fingerprint sensor 300 in the electronic device 10 provided by this embodiment is disposed on a side of the lens assembly 200 away from the display panel 100, and the fingerprint sensor 300 can receive light from the lens assembly 200, so as to detect information carried in the light, thereby implementing fingerprint identification. It is understood that the fingerprint sensor 300 is not limited by the present embodiment, as long as the fingerprint information of the user can be obtained by the light from the identification area 110. Illustratively, the fingerprint sensor 300 may be an image sensor, such as: CCD image sensors, CMOS image sensors, etc.
With reference to fig. 3, the process of fingerprint identification performed by the electronic device 10 in this embodiment is as follows: the user is close to display panel 100's identification area 110 with finger 20, identification area 110 is luminous, and then light shines on finger 20, light reflects the back on finger 20, form the reverberation that has carried fingerprint information, this reverberation passes through display panel 100 through light-transmitting structure 101, and then is guided to fingerprint sensor 300 by lens subassembly 200 on, this reverberation is received to fingerprint sensor 300, in order to form an image on fingerprint sensor 300, and then acquire the fingerprint information who carries in the reverberation, in order to realize fingerprint identification.
The electronic device 10 that this application embodiment provided, including the light-transmitting structure 101 that supplies light to pass in the identification area 110 of display panel 100, lens subassembly 200 sets up the one side that deviates from light-emitting surface 120 at display panel 100, lens subassembly 200 can assemble the light that comes from identification area 110, so that the light after assembling shines on fingerprint sensor 300, lens subassembly 200 can make the image that fingerprint sensor 300 received be for the image that reduces, and then reduced the regional area that fingerprint sensor 300 is used for the formation of image, can be less with fingerprint sensor 300 design, in order to reduce fingerprint sensor 300's volume, be convenient for realize as miniaturization and the lightweight of the electronic device 1 shown in fig. 1. In addition, the small size of the fingerprint sensor 300 can also improve the utilization rate of the fingerprint sensor 300.
Referring to fig. 9, an electronic device 10 includes a display panel 100 and an image sensor 700, where the image sensor 700 is disposed on a side of the display panel 100 away from a light-emitting surface; the display panel 100 includes an identification area, each film layer of the identification area has a certain light transmittance, for example, greater than 1%; the projection of the image sensor 700 on the display panel 100 covers the identification area. The electronic device 10 further includes a plurality of microlenses 400 arranged at intervals on a side of the image sensor 700 facing the display panel 100, and the microlenses 400 can focus light from the identification area 110 onto the image sensor 700. When fingerprint identification is carried out, a user enables the finger 20 to be close to the identification area, the identification area emits light, the light generates reflected light at the position of the finger 20, the reflected light carries fingerprint information, the reflected light is converged on the image sensor 700 by the micro lens 400 after passing through the display panel 100, and the image sensor 700 can acquire the fingerprint information after receiving the light so as to realize fingerprint identification.
Referring to fig. 10, a difference between the related art two and the related art one is that a convex lens 500 is disposed between an image sensor 700 and a display panel 100 to focus light from an identification area 110 on the image sensor 700, thereby implementing fingerprint identification. Referring to fig. 3, compared to the first related art and the second related art, in the embodiment of the present application, the identification area 110 of the display panel 100 includes the light-transmitting structure 101, and each film layer of the identification area 110 is not required to have a certain light transmittance, which may be less than 1%, or each film layer is not light-transmitting, and is suitable for the display panel 100 with a low light transmittance or without light transmittance.
Referring to fig. 11, the electronic device 10 includes a display panel 100 and an acoustic wave detector 600, wherein the acoustic wave detector 600 is disposed on a side of the display panel 100 away from a light emitting surface, and the acoustic wave detector 600 is attached to the display panel 100. The display panel 100 includes an identification area, and the projection of the acoustic wave detector 600 on the display panel 100 covers the identification area. When carrying out fingerprint identification, the user is attached on the discernment district with finger 20, and sound wave detector 600 sends the sound wave to finger 20, and this sound wave can be the ultrasonic wave, and the sound wave takes place to reflect in user's finger 20 department to form the reflection sound wave that carries fingerprint information, sound wave detector 600 receives this reflection sound wave, and then realizes fingerprint identification. However, in the process of attaching the acoustic wave detector 600 to the display panel 100, the display panel 100 is easily damaged, and further, the loss of the display panel 100 during assembly is increased, and the production cost is high. In contrast, as shown in fig. 3, in the electronic device 10 in the embodiment of the present application, the lens assembly 200 and the fingerprint sensor 300 are not in contact with the display panel 100, so that the display panel 100 is not damaged during the assembly process, the loss during the assembly process is reduced, and the production cost is reduced.
In other related technologies, a touch circuit is disposed in the display panel, when a finger of a user contacts the display panel, a capacitance is formed between the finger of the user and the corresponding touch circuit, a current of the touch circuit changes, and detection that the user touches the display panel can be achieved according to a change in the current on the touch circuit. When carrying out fingerprint identification, user's finger contact display panel, user's fingerprint is different including protruding structure and sunk structure, the electric capacity between protruding structure and the sunk structure and the touch-control circuit, and then forms the electric current difference to this fingerprint identification of realization. However, the recognition accuracy of the touch circuit is typically several hundred micrometers, for example, less than 400 μm, and the recognition accuracy required for fingerprint recognition is several tens of micrometers or less, so that the fingerprint recognition accuracy is insufficient when the touch circuit is used for fingerprint recognition. Especially in the case of high resolution, e.g. less than 300ppi, insufficient fingerprint recognition accuracy is particularly evident. As shown in fig. 3, in the electronic device 10 of the embodiment, the light-transmitting structure 101 for light to pass through is included in the identification area 110 of the display panel 100, and the lens assembly 200 is disposed on a side of the display panel 100 away from the light-emitting surface 120 to form a reduced image on the fingerprint sensor 300, which can be applied to the display panel 100 with high resolution, thereby improving the accuracy of fingerprint identification.
With reference to fig. 8, in the present embodiment, the plurality of light-transmitting structures 101 disposed in the identification area 110 shown in fig. 1 are distributed in an array in the identification area 110, so that the plurality of light-transmitting structures 101 are uniformly distributed, so as to facilitate the manufacturing of the display panel 100.
Referring to fig. 12, it can be understood that the display panel 100 includes an opposite light emitting surface 120 and a back surface 130, wherein a user can view an image displayed by the display panel 100 through the light emitting surface 120, and the back surface 130 is a side of the display panel 100 facing the inside of the housing 30 shown in fig. 1. The area of the light exit surface 120 where the light-transmitting structures 101 are used for receiving light is the viewing field 102 of the light-transmitting structures 101 as shown in fig. 13, that is, each light-transmitting structure 101 includes a viewing field 102 corresponding to the light exit surface 120, the external light corresponding to the viewing field 102 can enter the light-transmitting structure 101 through the viewing field 102 and then pass through the display panel 100, and the external light outside the viewing field 102 cannot enter the light-transmitting structure 101.
In the above implementation, the fields of view 102 corresponding to adjacent light-transmitting structures 101 partially overlap in the direction of the row in the light-transmitting structures 101 arranged in an array, i.e., in the X direction in fig. 13. With this arrangement, the fields of view 102 are arranged in series along the row direction, i.e., there is no gap between adjacent fields of view 102 along the row direction, thereby making it possible to acquire all the fingerprint information of the user's finger 20 along the row direction.
Further, along the direction of the columns in the light-transmitting structures 101 arranged in an array, i.e., the Y direction in fig. 13, the fields of view 102 corresponding to adjacent light-transmitting structures 101 partially overlap. The fields of view 102 are arranged consecutively in the column direction, i.e. there is no gap between adjacent fields of view 102 in the column direction, along which all fingerprint information of the user's finger 20 can be acquired. By the arrangement, the fingerprint information used by the user finger 20 can be acquired along the row direction and the column direction, so that complete fingerprint information of the user can be acquired, and the accuracy of fingerprint identification is improved.
It should be noted that, along the row direction and the column direction, the fields of view 102 corresponding to the adjacent light-transmitting structures 101 are overlapped, and the fingerprint information of the user is repeatedly acquired by the overlapped fields of view 102, so after the fingerprint sensor 300 acquires the fingerprint image corresponding to each field of view 102, image stitching needs to be performed, the fingerprint information corresponding to each field of view 102 is stitched, and the repeated fingerprint information is removed, so as to acquire complete fingerprint information.
In the above implementation, the area of the overlapping portion in the fields of view 102 corresponding to adjacent light-transmitting structures 101 may be 5% to 30% of the area of one of the fields of view 102, for example: 5%, 10%, 20%, 30%, etc. Therefore, when the complete fingerprint information is ensured to be acquired, the overlarge overlapping rate of the view fields 102 corresponding to the adjacent light-transmitting structures 101 is avoided, and the interference between the images of the adjacent light-transmitting structures 101 is further avoided.
With continued reference to fig. 12, in the present embodiment, the distance Z between adjacent light-transmitting structures 101 is equal in the row direction and the column direction, and the distance Z satisfies the following formula:
Z≤2 2 ×0.5×M
where M shown in fig. 13 is the radius of the field of view 102, and satisfies:
wherein the content of the first and second substances,
θ is the viewing angle FOV of the light-transmitting structure 101. b is a thickness of the light-transmitting structure 101 in a direction perpendicular to the display panel 100, and in an implementation of the light-transmitting structure 101 configured between the pixel defining layer 141 and the metal layer in the array substrate 150, b is a distance between the pixel defining layer 141 and the corresponding metal layer, as shown in fig. 4. d is the diameter of the light-transmitting structure 101, and a is the distance between the light-transmitting structure 101 and the light exit surface 120, i.e., the distance between the pixel defining layer 141 and the finger 20 as shown in fig. 4.
So set up, can make the visual field 102 overlap portion of adjacent light-transmitting structure 101 big enough to can obtain complete figure after guaranteeing to carry out the image concatenation, and then obtain complete fingerprint information, improve fingerprint identification's accuracy.
In the above implementation, a can be 300 μm to 2000 μm, correspondingly, b is 10 μm to 200 μm, and d is 1 to 20 μm. Illustratively, where a is 700 μm, b is 25 μm and d is 8 μm.
It can be understood that, since the pixels in the display panel 100 are distributed in an array, the pixels have a certain periodicity k, i.e., the pixel pitch is k. Therefore, Z can satisfy the above formula and also have a multiple relation with k, and correspondingly, Z can be k, 2k, 3k and the like. For example, when the pixel pitch of the display panel 100 is 55 μm, Z may be 55 μm, 110 μm, 220 μm, or the like, if the above formula is satisfied. In this way, the number of pixels between adjacent light-transmitting structures 101 can be made the same, so that the light-transmitting structures 101 are uniformly distributed.
Referring to fig. 14, in the present embodiment, according to the convex lens imaging principle, the imaging focal length f of the lens body 210, the distance v between the lens body 210 and the fingerprint sensor 300, and the distance u between the lens body 210 and the light-transmitting structure 101 satisfy the following formula:
through the arrangement, a reduced image can be formed on the fingerprint sensor 300, so that the size of the fingerprint sensor 300 is reduced, and the electronic equipment is convenient to realize miniaturization and light weight.
It can be understood that, the imaging focal length f of the lens body 210, the distance v between the lens body 210 and the fingerprint sensor 300, and the distance u between the lens body 210 and the light-transmitting structure 101 are reasonably set, so that the size of the user finger 20 is N times of the imaging size of the fingerprint on the fingerprint sensor 300, that is, the effective zoom ratio of the fingerprint identification module is N. Illustratively, the effective scaling ratio N may be 1-10, and further, N may be 3-6, e.g., 3, 4, 5, 6, etc. By the arrangement, image distortion caused by overlarge zoom ratio can be avoided, and the design and manufacturing difficulty of the lens structure can be reduced.
In the above implementation, the distance L = u + v between the light transmissive structure 101 and the fingerprint sensor 300, L may be 0.1mm-10mm. Further, L may be 3mm to 5mm, such as 3mm, 4mm, 5mm, and the like. The lens body has a diameter D of 1mm to 10mm, for example, 1mm, 5mm, 10mm, etc., and when D is 5mm, it can be applied to the display panel 100 in which the width of the area for acquiring a fingerprint image in the identification area 110 is 5mm × 5 mm.
It can be understood that, on the premise that the effective zoom ratio is constant, the distance L between the light-transmitting structure 101 and the fingerprint sensor 300 can be adjusted by reasonably setting the imaging focal length f of the lens body 210, so as to match the thickness of the electronic device 10. In this embodiment, the imaging focal length f may be 1mm to 20mm, for example: 1mm, 10mm, 20mm, etc., so that it is possible to avoid the distance L between the light-transmitting structure 101 and the fingerprint sensor 300 being too large or too small, even if the thickness of the entire display panel is moderate.
In the above implementation manner, v may be 0 to 2a, where a is a distance between the light-transmitting structure 101 and the user finger 20, so that a utilization rate of the fingerprint sensor 300 and an overlapping rate of images formed by adjacent light-transmitting structures 101 may be balanced, and on the premise that the fingerprint sensor 300 has a higher utilization rate, an excessively large overlapping rate of images formed by adjacent light-transmitting structures 101 may be avoided, thereby avoiding interference between images formed by adjacent light-transmitting structures 101.
It should be noted that, in the description of the embodiments of the present application, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected or integrally connected; mechanical connection or electrical connection is also possible; the connection may be direct, indirect via an intermediate medium, or communication between two members. Specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art according to specific situations.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. An electronic device, comprising:
the display panel comprises an identification area, the identification area comprises a plurality of light-transmitting structures, and the light-transmitting structures are arranged at intervals; the light-transmitting structure is used for carrying out small-hole imaging;
the fingerprint identification module comprises a fingerprint sensor and a lens assembly;
the fingerprint sensor is arranged on one side of the display panel, which is far away from the light emitting surface, and the projection of the fingerprint sensor on the display panel is positioned in the identification area;
the lens assembly is arranged between the display panel and the fingerprint sensor, the projection of the lens assembly on the display panel covers the identification area, a main optical axis of the lens assembly is perpendicular to the display panel, and the lens assembly is used for converging light rays from the light-transmitting structure to the fingerprint sensor.
2. The electronic device of claim 1, wherein the lens assembly comprises:
the lens body comprises a light incident surface and a light emergent surface, wherein the light incident surface faces the display panel, the light emergent surface deviates from the display panel, and the light incident surface is an outwards convex curved surface.
3. The electronic device of claim 2, wherein the light emitting surface is a curved surface protruding outward.
4. The electronic device of claim 2, wherein a plurality of the light-transmissive structures are distributed in an array within the identification area.
5. The electronic device according to claim 4, wherein a region of the light-transmitting structure in the light exit surface for receiving light is a field of view of the light-transmitting structure;
along the row direction, the visual fields corresponding to the adjacent light-transmitting structures are partially overlapped.
6. The electronic device of claim 5, wherein the corresponding field of view portions of adjacent light-transmissive structures overlap along a column direction.
7. The electronic device according to claim 6, wherein distances between adjacent light-transmitting structures in a row direction and a column direction are equal, and the distance Z satisfies the following formula:
Z≤2 2 ×0.5×M
wherein M is the radius of the field of view, and satisfies the following conditions:
wherein the content of the first and second substances,
theta is the visual angle of the light-transmitting structure, b is that the light-transmitting structure is along the perpendicular to the thickness of the display panel direction, d is the diameter of the light-transmitting structure, and a is the distance between the light-transmitting structure and the light-emitting surface.
8. The electronic device of claim 3, wherein an imaging focal length f of the lens body, a distance v between the lens body and the fingerprint sensor, and a distance u between the lens body and the light-transmitting structure satisfy the following formulas:
9. the electronic device according to claim 1, wherein the display panel comprises:
the pixel structure comprises a pixel limiting layer, a light-emitting layer and a light-emitting layer, wherein a plurality of pixel openings are arranged on the pixel limiting layer in an array manner, and a light-emitting material layer is arranged in each pixel opening; a plurality of holes are further arranged on the pixel limiting layer at intervals, and each hole is positioned between two adjacent pixel openings;
the array substrate and the pixel limiting layer are arranged in a stacked mode, a metal pattern layer is arranged in the array substrate, and the projection of the hole on the array substrate is located in a hollow-out area of the metal pattern layer; the light-transmitting structure comprises the hole.
10. The electronic device according to claim 1, wherein the display panel comprises:
the color film substrate is provided with a plurality of light transmission openings in an array manner, and light filters are arranged in the light transmission openings; a plurality of holes are formed in the color film substrate at intervals, and each hole is located between two adjacent light-transmitting openings;
the liquid crystal layer is arranged in a laminating manner with the color film substrate, the liquid crystal layer comprises a plurality of hole structures, and the projection of each hole structure on the color film substrate covers one hole;
the array substrate comprises a metal pattern layer, the projection of the hole on the array substrate is located in the hollow area of the metal pattern layer, and the light-transmitting structure comprises the hole and the hole structure.
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| PCT/CN2023/100698 WO2023246640A1 (en) | 2022-06-24 | 2023-06-16 | Electronic device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117111186A (en) * | 2023-04-10 | 2023-11-24 | 荣耀终端有限公司 | Light-transmitting structure and wearable equipment |
| WO2023246640A1 (en) * | 2022-06-24 | 2023-12-28 | 华为技术有限公司 | Electronic device |
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| CN107609538B (en) * | 2017-10-12 | 2020-08-04 | 京东方科技集团股份有限公司 | Fingerprint identification device, fingerprint identification method and touch display device |
| WO2020132974A1 (en) * | 2018-12-26 | 2020-07-02 | 深圳市汇顶科技股份有限公司 | Fingerprint recognition apparatus and electronic device |
| CN111788577B (en) * | 2020-03-03 | 2024-04-30 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device, display screen and electronic equipment |
| CN112528953A (en) * | 2020-12-25 | 2021-03-19 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device, electronic equipment and fingerprint identification method |
| CN115171168A (en) * | 2022-06-24 | 2022-10-11 | 华为技术有限公司 | Electronic device |
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| WO2023246640A1 (en) * | 2022-06-24 | 2023-12-28 | 华为技术有限公司 | Electronic device |
| CN117111186A (en) * | 2023-04-10 | 2023-11-24 | 荣耀终端有限公司 | Light-transmitting structure and wearable equipment |
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