CN110286800B - Fingerprint display panel and electronic device - Google Patents
Fingerprint display panel and electronic device Download PDFInfo
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- CN110286800B CN110286800B CN201910569938.8A CN201910569938A CN110286800B CN 110286800 B CN110286800 B CN 110286800B CN 201910569938 A CN201910569938 A CN 201910569938A CN 110286800 B CN110286800 B CN 110286800B
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- layer
- metal touch
- fingerprint
- transparent cover
- touch layer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- 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
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
Abstract
The application discloses fingerprint display panel includes: a transparent cover plate; the fingerprint identification assembly is arranged on one side of the transparent cover plate and comprises a metal touch layer; the light shield layer sets up between the metal touch-control layer of transparent cover plate and fingerprint identification subassembly, and the light shield layer overlaps at least part of the metal touch-control layer of fingerprint identification subassembly in transparent cover plate thickness direction to make and beat outside the unable reflection of the at least part of ambient light on metal touch-control layer to the transparent cover plate. By adopting the structure, because the metal touch layer of the fingerprint identification component is at least partially shielded by the shading layer, the environment light emitted outside the transparent cover plate firstly irradiates on the shading layer, so that the environment light cannot reach the metal touch layer, and the light cannot be reflected by the shading layer, or the reflection amount is very limited. And the problem of light reflection caused by the existence of the metal touch layer is further improved. The present application also provides an electronic device comprising the above-described fingerprint display panel.
Description
Technical Field
The present application relates to the field of electronic devices, and more particularly, to a fingerprint display panel and an electronic apparatus.
Background
Electronic devices such as mobile phones and tablet computers comprise fingerprint identification assemblies, wherein the fingerprint identification assemblies comprise metal parts, and the metal parts have a reflection function. Therefore, in the screen-off state of the electronic device, the metal component reflects ambient light, and the screen of the electronic device reflects light or has uneven color.
Disclosure of Invention
The application provides a fingerprint display panel and an electronic device.
In order to solve the technical problem, the application adopts a technical scheme that: provided is a fingerprint display panel including:
a transparent cover plate;
the fingerprint identification assembly is arranged on one side of the transparent cover plate and comprises a metal touch layer;
the light shielding layer is arranged between the transparent cover plate and the metal touch layer of the fingerprint identification assembly, and the light shielding layer and the metal touch layer of the fingerprint identification assembly are at least partially overlapped in the thickness direction of the transparent cover plate, so that at least part of ambient light striking the metal touch layer cannot be reflected to the outside of the transparent cover plate.
The present application also provides an electronic device comprising the above-described fingerprint display panel.
In the above scheme, including transparent cover plate, setting in the fingerprint identification subassembly of transparent cover plate in this application to and set up the light shield layer between transparent cover plate and fingerprint identification subassembly. Wherein, the fingerprint identification subassembly includes metal touch-control layer, and the light shield layer overlaps with the metal touch-control layer of fingerprint identification subassembly at least part on transparent cover plate thickness direction. Structure more than adopting, because the metal touch-control layer of fingerprint identification subassembly is at least partly sheltered from by the light shield layer, the ambient light that the transparent cover plate was penetrated into at first shines at the light shield layer to make ambient light can't reach metal touch-control layer, and light also can't reflect through the light shield layer, perhaps the volume of reflection is very limited. Consequently, structure more than adopting can make the light that reflects out after getting into display panel under the effect of light shield layer not have, perhaps greatly reduced, and then improved the problem of the reflection of light that the existence of metal touch-control layer leads to.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an enlarged schematic view of a partial cross-sectional structure of a fingerprint display panel according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an embodiment of an electronic device including a fingerprint display panel;
FIG. 3 is an enlarged view of a portion of a fingerprint identification module according to an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating an operation of a light-shielding layer and a metal touch layer according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a metal touch layer in an embodiment of the present application;
FIG. 6 is a schematic cross-sectional view illustrating another embodiment of a display panel according to the present application;
fig. 7 is an enlarged schematic view of a partial cross-sectional structure of a fingerprint display panel according to yet another embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 and 2, fig. 1 is an enlarged schematic view of a partial cross-sectional structure of a fingerprint display panel according to an embodiment of the present application, and fig. 2 is a schematic view of a structure of an embodiment of an electronic device 200 including a fingerprint display panel 100 according to the present application.
Specifically, the electronic apparatus 200 may be any of various types of computer system devices (only one modality is exemplarily shown in fig. 2) that are mobile or portable and perform wireless communication. Specifically, the electronic apparatus 200 may be a mobile phone or a smart phone (e.g., an iPhone (TM) based phone), a Portable game device (e.g., nintendo DS (TM), playStation Portable (TM), game Advance (TM), iPhone (TM)), a laptop computer, a PDA, a Portable internet device, a music player and a data storage device, other handheld devices and devices such as a headset, etc., and the electronic apparatus 200 may also be other wearable devices that require charging (e.g., a Head Mounted Device (HMD) such as an electronic bracelet, an electronic necklace, an electronic device or a smart watch).
The electronic apparatus 200 may also be any of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, other media recorders, radios, medical devices, vehicle transportation devices, calculators, programmable remote controllers, pagers, laptop computers, desktop computers, printers, netbook computers, personal Digital Assistants (PDAs), portable Multimedia Players (PMPs), motion Picture experts group (MPEG-1 or MPEG-2) Audio layer 3 (MP 3) players, portable medical devices, and digital cameras and combinations thereof.
In some cases, the electronic device 200 may perform a variety of functions (e.g., playing music, displaying videos, storing pictures, and receiving and sending phone calls). If desired, the electronic apparatus 100 may be a device such as a cellular telephone, media player, other handheld device, wrist watch device, pendant device, earpiece device, or other compact portable device.
As shown in fig. 1, the fingerprint display panel 100 provided by the present application includes a transparent cover 10, a fingerprint identification component 20 disposed on one side of the transparent cover, a light shielding layer 30 disposed between the transparent cover 10 and the fingerprint identification component 20, and a display screen 40 disposed on one side of the light shielding layer 30 away from the transparent cover 10.
Specifically, the transparent cover plate 10 is provided over the display screen 40 to cover the display screen 40. The transparent cover 10 may be a transparent glass cover, so that the display 40 is displayed through the transparent cover 10, and a user can see the picture displayed by the display 40 through the transparent cover 10. In some embodiments, the transparent cover plate 10 may be a transparent glass made of a material such as sapphire.
The fingerprint identification component 20 is arranged on one side of the transparent cover plate 10 close to the display screen 40, and the fingerprint identification component group 20 is arranged on the display screen layer 40 in a stacking mode. Specifically, the fingerprint identification component 20 is configured to detect and identify a fingerprint of a user, so as to unlock or perform a predetermined function, such as performing an online payment or logging in an application, such as logging in a payment bank.
Referring to fig. 1 and 3, fig. 3 is an enlarged schematic view of a partial cross-sectional structure of a fingerprint identification module according to an embodiment of the present application. Further, the fingerprint identification module 20 includes an insulating layer 22, a metal touch layer 24, a substrate circuit layer 26, and a glass layer 28, which are sequentially stacked, wherein the glass layer 28 is disposed away from the transparent cover 10 relative to the metal touch layer 24. The insulating layer 22 directly contacts with the transparent cover 10, and on one hand, is used to protect the metal touch layer 22 and the substrate circuit layer 24 in the fingerprint identification device 20 from being rubbed by other components, and on the other hand, also plays a role in insulation protection.
Specifically, the fingerprint identification device 20 includes a mutual capacitance sensor for detecting a fingerprint signal by an induced electric field. More specifically, the metal touch layer 24 includes a driving electrode, a receiving electrode and a fingerprint identification chip, when the fingerprint identification assembly 20 works, an electric field is formed by transmitting and receiving voltages through the driving electrode and the receiving electrode, when a user presses the transparent cover plate 10 with a hand, the dielectric layer changes, the capacitance changes, the electric field changes, that is, the charge amount changes, and finally the fingerprint identification chip detects the change of the current.
The substrate circuit layer 26 is provided with a circuit with a specific function, such as a clock circuit or an inverter, for connecting with the fingerprint identification chip, so as to sense image data formed by current variation, and transmit the image data to the main board of the electronic device 200 for processing, thereby implementing the function of the fingerprint identification component 20.
Referring to fig. 4, fig. 4 is a schematic view illustrating an operation of a light shielding layer and a metal touch layer in an embodiment of the present disclosure, the light shielding layer 30 is disposed between the transparent cover plate 10 and the fingerprint identification device 20, and the light shielding layer 30 and the metal touch layer 24 of the fingerprint identification device 20 are at least partially overlapped in a thickness direction of the transparent cover plate 10, so that an ambient light outside the transparent cover plate 10 first irradiates on the light shielding layer and cannot reach the metal touch layer 24, or only a very limited portion of the ambient light irradiates on the metal touch layer 24. Specifically, even if a part of the ambient light is irradiated on the metal touch layer 24 and comes out of the metal touch layer 24, the reflected ambient light is shielded by the light shielding layer 30, and the ambient light irradiated on the light shielding layer 30 cannot be reflected by the light shielding layer, so that no ambient light is emitted or only a small part of the ambient light can be reflected to the outside of the transparent cover plate 10.
Optionally, the light shielding layer 30 is one of an organic resin, a black metal plating, or a ferrous metal resistant to exceeding a preset temperature. The light-shielding layer 30 made of the above material has a low reflectance, and thus, ambient light applied to the light-shielding layer 30 can be reflected by the light-shielding layer 30 with no or only a small amount.
Optionally, in an embodiment, the shape of the light shielding layer 30 is the same as that of the metal touch layer 24 of the fingerprint identification device, and the light shielding layer 30 and the metal touch layer 24 are completely overlapped. With the above structure, the light shielding layer 30 completely shields the metal touch layer 24, so as to shield light to the maximum extent and avoid the reflection phenomenon of ambient light caused by some parts of the metal touch layer 24 not being shielded by the light shielding layer 30.
Specifically, in different embodiments, the light shielding layer 30 may also be slightly larger than the metal touch layer 24 to cover the metal touch layer 24 and have a portion exceeding the metal touch layer 24 to ensure the light shielding effect. In some embodiments, the light shielding layer 30 may be slightly smaller than the metal touch layer 24, and as long as most of the metal touch layer 24 is shielded, the problem of ambient light reflection of the display panel 100 can be greatly improved.
Optionally, in an embodiment, the metal touch layer 24 is hollow, and the corresponding light shielding layer 30 is also hollow. It will be appreciated that the fingerprint identification module 20 is disposed in a stacked relationship with the display area 32 of the display 40, i.e., the portion of the display 40 that overlaps the fingerprint identification module 20 is also normally displayed. It can be understood that, the metal touch layer 24 and the light shielding layer 30 adopt the fretwork column structure, can improve the transmittance of the light that the display screen 40 sent, avoid making the display of the display screen 40 become dark owing to set up the setting of metal touch layer 24 and light shielding layer 30.
Optionally, in an embodiment, the metal touch layer 24 and the light shielding layer 30 adopt a mesh structure, as shown in fig. 5, and fig. 5 is a schematic structural diagram in an embodiment of the metal touch layer 24 of the present application.
Optionally, in an embodiment, the light shielding layer 30 and the metal touch layer 24 are stacked, and the light shielding layer 30 abuts against the metal touch layer 24. By adopting the structure, the distance between the light shielding layer 30 and the metal touch layer 24 is closer, and large-view-angle light reflection caused by alignment deviation is not easy to occur.
In another embodiment, the light shielding layer 30 is disposed on a surface of the transparent cover plate 10 near the metal touch layer 24. Specifically, the light shielding layer 30 is formed on the surface of one side, close to the metal touch layer 24, of the transparent cover plate 10 by adopting a silk-screen printing or ink printing mode, and by adopting the structure, the preparation process is simple and the cost is low.
Optionally, in different embodiments, the light shielding layer 30 may be disposed on any layer between the transparent cover plate and the metal touch layer, and is not limited herein.
In an embodiment, the metal touch layer 24 includes a first metal touch layer 242 and a second metal touch layer 244, referring to fig. 6, and fig. 6 is a schematic partial cross-sectional structure diagram of another embodiment of the display panel of the present application. The first metal touch layer 242 and the second metal touch layer 244 are stacked. Specifically, the display panel 100 further includes an insulating medium 60, and a plurality of through holes 62 are distributed on the insulating medium 60, as shown in fig. 6, the through holes 62 are filled with a portion of the second metal touch layer 244. A portion of the first metal touch layer 242 is in contact with the second metal touch layer 244 through the via 62 to form an electrical connection. With the above structure, only a portion of the first metal touch layer 242 is electrically connected to the second metal touch layer 244, and the other portion is not connected, so that a capacitor is formed between the first metal touch layer 242 and the second metal touch layer 244 through the insulating medium 60. One of the first metal touch layer 242 and the second metal touch layer 244 is a voltage input layer and one is a voltage receiving layer to generate an electric field, that is, the above-mentioned driving electrode and receiving electrode.
Optionally, in an embodiment, the second metal touch layer 244 includes metal lines disposed in a different layer from the first metal layer 242 except for a portion in contact with the first metal layer 242, where the second metal touch layer 244 is formed by a plurality of metal lines, and a portion of the metal lines is disposed in a different layer from the first metal layer 242, and the portion disposed in the different layer may be used as electrical connection lines of other devices in the display panel 100, for example, as connection lines between two transistors.
It is understood that the light shielding layer 30 is also disposed on the metal lines disposed in a layer different from the first metal layer 242 to ensure the effect of preventing reflection.
The display screen 40 is arranged on the side of the fingerprint identification component 20 far away from the transparent cover plate 10, and the display screen 40 is at least partially arranged in a stacking mode with the fingerprint identification component 20. Specifically, the display screen 40 includes a display area 42 and a non-display area 44 connected to the display area 42, as shown in fig. 1.
Optionally, in one embodiment, the fingerprint identification component 20 is located in the display area 42 of the display screen 40. The fingerprint identification component 20 completely covers the display area 42 of the display screen 40, and with the structure, a user can press a fingerprint at any position on the transparent cover plate 10 corresponding to the display area 42 to realize the function of the fingerprint identification component 20, which is very convenient and fast. Meanwhile, a non-display area 44 is not required to be separately arranged for arranging the fingerprint identification component 20, and the screen occupation ratio of the electronic device 200 is further improved.
Optionally, in an embodiment, the light shielding layer 30 completely covers the fingerprint identification device 20, so as to improve the reflection of light on the screen of the electronic device 200 to the maximum extent. It will be appreciated that in embodiments where the fingerprint identification assembly 20 completely covers the display area 42 of the display screen 40, the light blocking layer 30 covers the entire display area 42 of the display screen 40. In other embodiments, the fingerprint identification component 20 may only cover a portion of the display area 42, for example, the portion is disposed at a lower half portion of the electronic device 200, or a position close to the left and right sides, and specifically, the light shielding layer 30 is hollow and only shields the metal touch layer instead of a sheet shape.
Specifically, in an embodiment, the fingerprint display panel 100 further includes an optical adhesive layer 70, as shown in fig. 7, and fig. 7 is an enlarged schematic view of a partial cross-sectional structure of a fingerprint display panel in another embodiment of the present application. The optical adhesive layer 70 is used to fix the light shielding layer 30 on one side of the transparent cover plate 10 or on the fingerprint identification module 20. It can be understood that, in the present application, the fingerprint display panel 100 is located in the display area 42 of the display screen 40, and the optical adhesive 70 can ensure the transmittance of light, so as to avoid affecting the display effect of the display screen 40.
This application overlaps the setting with fingerprint identification subassembly 20 and display screen 40's display area 42 at least partially, need not set up fingerprint identification subassembly 20 alone in non-display area 44 on the one hand, and on the other hand can make the electronic device 200 that has adopted this fingerprint display panel 100 more have mysterious sense and science and technology sense. In addition, the light shielding layer 30 is disposed such that ambient light passing through the transparent cover plate 10 irradiates on the light shielding layer 30 and cannot irradiate on the metal touch layer, or a small portion of the ambient light can irradiate on the metal touch layer, and meanwhile, the light shielding layer 30 is made of a material with a very low or even zero reflectivity, so that the ambient light irradiating on the light shielding layer 30 cannot be reflected by the light shielding layer 30. Thereby improving the likelihood of light reflection on the surface of the electronic device 200 due to the placement of the fingerprint identification assembly 20 in the display area 42.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A fingerprint display panel, comprising:
a transparent cover plate;
the fingerprint identification assembly is arranged on one side of the transparent cover plate and comprises a metal touch layer;
the light shielding layer is arranged between the transparent cover plate and the metal touch layer of the fingerprint identification assembly, and the light shielding layer and the metal touch layer of the fingerprint identification assembly are at least partially overlapped in the thickness direction of the transparent cover plate, so that at least part of ambient light hitting the metal touch layer cannot be reflected to the outside of the transparent cover plate;
the display screen, the display screen sets up the fingerprint identification subassembly is kept away from transparent cover one side, the display screen include the display area and with the non-display area that the display area is connected, the fingerprint identification subassembly is located in the display area, the fingerprint identification subassembly covers completely the display area, the light shield layer covers wholly the display area.
2. The fingerprint display panel of claim 1, wherein the light shielding layer has a shape that is the same as a shape of the metal touch layer of the fingerprint identification assembly, and the light shielding layer and the metal touch layer are completely overlapped.
3. The fingerprint display panel of claim 2, wherein the metal touch layer is hollowed.
4. The fingerprint display panel of claim 1, wherein the light shielding layer is stacked on the metal touch layer, and the light shielding layer abuts against the metal touch layer.
5. The fingerprint display panel of claim 1, wherein the light shielding layer is disposed on a surface of the transparent cover plate near the metal touch layer.
6. The fingerprint display panel of claim 1, wherein the metal touch layer comprises a first metal touch layer and a second metal touch layer, and the first metal touch layer and the second metal touch layer are stacked.
7. The fingerprint display panel of claim 6, further comprising an insulating medium, wherein a plurality of through holes are distributed on the insulating medium, and a portion of the first metal touch layer is electrically connected to the second metal touch layer through the through holes.
8. The fingerprint display panel of claim 1, further comprising an optical adhesive layer for fixing the light shielding layer to one side of the transparent cover plate or to the fingerprint identification component.
9. The fingerprint display panel of any one of claims 1-8, wherein the light shielding layer is one of an organic resin, a black plated metal, or a ferrous metal that is resistant to temperatures exceeding a preset temperature.
10. An electronic device characterized by comprising the fingerprint display panel according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910569938.8A CN110286800B (en) | 2019-06-27 | 2019-06-27 | Fingerprint display panel and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910569938.8A CN110286800B (en) | 2019-06-27 | 2019-06-27 | Fingerprint display panel and electronic device |
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| CN110286800A CN110286800A (en) | 2019-09-27 |
| CN110286800B true CN110286800B (en) | 2023-04-14 |
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| CN201910569938.8A Active CN110286800B (en) | 2019-06-27 | 2019-06-27 | Fingerprint display panel and electronic device |
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| CN111766977B (en) * | 2020-06-12 | 2021-08-24 | 惠州市华星光电技术有限公司 | Touch panel and touch display device |
| CN112883937B (en) * | 2021-04-08 | 2023-09-26 | 紫光计算机科技有限公司 | Fingerprint identification module and fingerprint identification method |
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| CN108898946A (en) * | 2018-07-02 | 2018-11-27 | 京东方科技集团股份有限公司 | Display panel, preparation method and display device with fingerprint identification function |
| CN109273497A (en) * | 2018-09-21 | 2019-01-25 | 京东方科技集团股份有限公司 | A kind of oled display substrate and display device |
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| CN108073900B (en) * | 2017-12-14 | 2021-01-08 | 京东方科技集团股份有限公司 | Flexible display panel for fingerprint identification, display device and fingerprint identification method |
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| CN108898946A (en) * | 2018-07-02 | 2018-11-27 | 京东方科技集团股份有限公司 | Display panel, preparation method and display device with fingerprint identification function |
| CN109273497A (en) * | 2018-09-21 | 2019-01-25 | 京东方科技集团股份有限公司 | A kind of oled display substrate and display device |
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