CN116665255A - Display device, fingerprint identification method of display device and electronic equipment - Google Patents
Display device, fingerprint identification method of display device and electronic equipment Download PDFInfo
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- 229920000728 polyester Polymers 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 7
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
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Classifications
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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
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a display device, a fingerprint identification method of the display device and electronic equipment, wherein the display device comprises a display panel; the friction assembly comprises a friction electrode layer and a friction contact layer, the friction electrode layer is arranged on the light emitting side of the display panel, and the friction contact layer is arranged on the side, away from the display panel, of the friction electrode layer; the front projection of the optical fingerprint element, the friction contact layer and the friction electrode layer on the display panel cover the front projection of the optical fingerprint element on the display panel. The friction component and the optical fingerprint element realize living fingerprint identification together, so that the anti-counterfeiting capacity of the display device and the use safety of the display device are improved. The friction assembly provided by the embodiment of the invention has the advantages of simple structure and low preparation cost, and solves the technical problems of complex structure, complex manufacturing process and high preparation cost of the traditional living fingerprint identification technology.
Description
Technical Field
The invention belongs to the technical field of electronic products, and particularly relates to a display device, a fingerprint identification method of the display device and electronic equipment.
Background
Fingerprint identification technology has been widely used in many fields such as mobile phones, notebook computers, door locks, etc. because of its good security and convenience in use. According to the different working principles, the existing fingerprint identification technology can be divided into three categories, namely capacitive fingerprint identification, optical fingerprint identification and ultrasonic fingerprint identification. The optical fingerprint identification technology has the advantages of high environmental adaptability, high performance stability, low cost and the like, so that the existing display device is mainly provided with an optical fingerprint identification module.
However, the optical fingerprint identification technology is mainly based on the reflection principle of light to collect fingerprint images, and can not distinguish whether the collected object is a living fingerprint, so that the anti-counterfeiting performance is generally weaker, and a great potential safety hazard exists.
Therefore, a new display device, a fingerprint identification method for the display device and an electronic apparatus are needed.
Disclosure of Invention
The embodiment of the invention provides a display device, a fingerprint identification method of the display device and electronic equipment, and the friction assembly and an optical fingerprint element are used for realizing living fingerprint identification together, so that the anti-counterfeiting capacity of the display device and the use safety of the display device are improved.
In one aspect, an embodiment of the present invention provides a display device, including: a display panel; the friction assembly comprises a friction electrode layer and a friction contact layer, the friction electrode layer is arranged on the light emitting side of the display panel, the friction contact layer is arranged on one side, away from the display panel, of the friction electrode layer, and the friction contact layer is in contact with the friction electrode layer; and the front projection of the friction contact layer and the friction electrode layer on the display panel covers the front projection of the optical fingerprint element on the display panel.
According to an aspect of the present invention, the display panel includes an array layer, a display function layer, and a touch function layer, which are stacked in a thickness direction of the display device; the friction electrode layer is arranged on one side of the touch control functional layer, which is away from the display functional layer.
According to an aspect of the present invention, in a thickness direction along the display device, the display panel includes an array layer, a display function layer, and a touch function layer, which are stacked, the touch function layer including a touch electrode layer; the friction electrode layer and the touch electrode layer are arranged on the same layer.
According to one aspect of the present invention, the friction electrode layer includes a transparent electrode; preferably, the transparent electrode is in a grid structure; preferably, the orthographic projection of the friction contact layer on the display panel is overlapped with the orthographic projection of the transparent electrode on the display panel.
According to an aspect of the present invention, the electric parameter detecting unit is further included, the friction electrode layer is connected to the electric parameter detecting unit, and the friction electrode layer is grounded.
According to one aspect of the invention, the triboelectric charge density of the material of the triboelectric contact layer is greater than-60. Mu.C/m 2 The method comprises the steps of carrying out a first treatment on the surface of the Preferably, the material of the friction contact layer comprises a transparent polymer material; preferably, the material of the friction contact layer comprises at least one of polyvinyl chloride and polyester; preferably, the friction contact layer is multiplexed as a protective layer.
According to one aspect of the present invention, the display device includes a first display region and a second display region disposed at least partially around the first display region, the first display region having a light transmittance that is greater than a light transmittance of the second display region; the optical fingerprint element and the friction electrode layer are both arranged in the first display area.
In another aspect, the embodiment of the invention provides a fingerprint identification method for a display device, which includes the following steps: acquiring a fingerprint image and judging whether the matching degree between the fingerprint image and a reference image is larger than a first preset value or not; acquiring an electrical parameter generated by the friction assembly, and judging whether the difference value between the electrical parameter and a preset parameter is smaller than the preset difference value; and if the matching degree between the fingerprint image and the reference image is larger than the first preset value and the difference value between the electric parameter and the preset parameter is smaller than the preset difference value, confirming that the fingerprint identification is successful.
According to another aspect of the present invention, in the step of acquiring a fingerprint image, it includes: acquiring a fingerprint image through an optical fingerprint element; in the step of obtaining the electrical parameter generated by the friction assembly, it comprises: the electric parameter generated by the friction component is acquired by an electric parameter detecting part.
In still another aspect, an embodiment of the present invention provides an electronic device, including: the display device of any one of the above embodiments.
Compared with the prior art, the display device provided by the embodiment of the invention comprises a display panel, an optical fingerprint element and a friction assembly, wherein the friction assembly comprises a friction electrode layer and a friction contact layer; when the living finger is gradually far away from the friction contact layer, the generated negative charge still remains in the friction contact layer, and at the moment, potential difference exists between the friction electrode layer and the ground plane, and when electrons flow outwards, for example, to an external circuit, the friction electrode layer can be positively charged to balance the potential difference, so that electric signals such as charge quantity/voltage/current and the like are generated; when the living finger is completely far away, the electric parameters such as the electric quantity/voltage/current and the like passing through the friction electrode layer reach the maximum, and the non-living body such as fake fingerprint and the like does not generate the electric signals during touch control, so that whether the touch control body is a living body can be judged, and meanwhile, the optical fingerprint element is combined to realize living fingerprint identification together, so that the anti-counterfeiting capacity of the display device and the use safety of the display device are improved. The friction assembly provided by the embodiment of the invention has the advantages of simple structure and low preparation cost, and solves the technical problems of complex structure, complex manufacturing process and high preparation cost of the traditional living fingerprint identification technology.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 2 is a film layer structure diagram of a display device provided in one embodiment at B-B in FIG. 1;
FIG. 3 is a film layer structure diagram of a display device according to another embodiment of FIG. 1B-B;
FIG. 4 is a diagram of a film layer structure in a fingerprint identification process of a display device according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a film structure in a fingerprint identification process of a display device according to another embodiment of the present invention;
FIG. 6 is a diagram of a film layer structure in a fingerprint identification process of a display device according to another embodiment of the present invention;
FIG. 7 is a film layer structure diagram of a display device according to yet another embodiment of FIG. 1B-B;
fig. 8 is a flowchart of a fingerprint identification method of a display device according to an embodiment of the present invention.
In the accompanying drawings:
1-a display panel; 11-an array layer; 12-a display function layer; 121-a first electrode; 122-a layer of luminescent material; 123-a second electrode; 13-a thin film encapsulation layer; 14-a touch control functional layer; 141-a touch substrate; 142-a touch electrode layer; 2-an optical fingerprint element; 3-friction assembly; 31-a friction electrode layer; 32-a friction contact layer; 4-an electrical parameter detecting unit; s-source electrode; d-drain electrode; a G-gate; y-active layer; AA 1-a first display area; AA 2-second display area.
Detailed Description
Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
In order to better understand the present invention, a display device, a fingerprint identification method of the display device, and an electronic apparatus according to embodiments of the present invention are described in detail below with reference to fig. 1 to 5.
Referring to fig. 1 to 6, fig. 1 is a schematic structural diagram of a display device according to an embodiment of the invention; fig. 2 is a schematic structural diagram of a display device according to another embodiment of the present invention.
An embodiment of the present invention provides a display device including: a display panel 1; the friction assembly 3, the friction assembly 3 includes friction electrode layer 31 and friction contact layer 32, the friction electrode layer 31 locates the light-emitting side of the display panel 1, the friction contact layer 32 locates the friction electrode layer 31 to deviate from one side of the display panel 1, and friction contact layer 32 contacts with friction electrode layer 31; the front projection of the optical fingerprint element 2, the friction contact layer 32 and the friction electrode layer 31 on the display panel 1 all cover the front projection of the optical fingerprint element 2 on the display panel 1. Wherein the wiping layer 32 is intended to be in direct contact with a finger.
The display device provided by the embodiment of the invention comprises a display panel 1, an optical fingerprint element 2 and a friction component 3, wherein the friction component 3 comprises a friction electrode layer 31 and a friction contact layer 32, when a living finger is in contact with the friction contact layer 32, the living finger has weak capability of binding electrons due to the difference of friction electric polarities, the living finger is positively charged, and the friction contact layer 32 is negatively charged, as shown in fig. 4; when the living finger gradually moves away from the friction contact layer 32, the generated negative charge remains in the friction contact layer 32, and at this time, a potential difference exists between the friction electrode layer 31 and the ground plane, and when electrons flow outwards, for example, to an external circuit, the friction electrode layer 31 is positively charged to balance the potential difference, so as to generate electric signals such as charge quantity/voltage/current, as shown in fig. 5; when the living finger is completely away, the electric parameters such as the amount of charge/voltage/current passed by the friction electrode layer 31 are maximized as shown in fig. 6. The fake fingerprint and other non-living bodies do not generate the electric signals during touch control, so that whether the touch control body is a living body can be judged, and meanwhile, the optical fingerprint element 2 is combined to realize living body fingerprint identification, so that the anti-counterfeiting capacity of the display device and the use safety of the display device are improved. The friction component 3 in the embodiment of the invention has a simple structure and low preparation cost, and solves the technical problems of complex structure, complex manufacturing process and high preparation cost of the traditional living fingerprint identification technology.
The display panel 1 provided by the embodiment of the invention can be an Organic Light-Emitting Diode (OLED) display device, a liquid crystal panel, a Micro-plane display device (Micro-OLED or Micro-LED) or the like. The following examples are each described taking the display device as an OLED display device as an example.
In the present embodiment, the orthographic projections of the friction contact layer 31 and the friction electrode layer 32 on the display panel 1 cover the orthographic projections of the optical fingerprint element 2 on the display panel 1. That is, the orthographic projection area of the friction contact layer 31 and the friction electrode layer 32 on the display panel 1 is larger than or equal to the orthographic projection area of the optical fingerprint element 2 on the display panel 1. Alternatively, the friction contact layer 31 may be provided in an entire layer, which is convenient for a user to touch and improves the flatness of the surface of the display panel.
Of course, the friction contact layer 31 may be disposed only corresponding to the position of the optical fingerprint element 2, so as to reduce the cost. Since the friction contact layer 32 and the friction electrode layer 31 are in contact, the size of the friction contact layer 32 can be larger than or equal to the size of the friction electrode layer 31, so that the friction contact layer 32 covers the side of the friction electrode layer 31, which is away from the display panel 1, interference of other film layers between the friction contact layer 32 and the friction electrode layer 31 is prevented, and the charge transmission effect between the friction electrode layer 31 and the friction contact layer 32 is ensured. The rubbing electrode layer 31 may be disposed corresponding to only the position of the optical fingerprint element 2.
The optical fingerprint element 2 may be used in particular for acquiring fingerprint images. The optical fingerprint element 2 may process the acquired fingerprint image, and the optical fingerprint element 2 may determine whether to unlock the display device according to the degree of matching between the fingerprint image and the reference image. The optical fingerprint element 2 may be provided on the light-emitting side or the backlight side of the display panel 1, or may be directly integrated inside the display panel 1, and is not particularly limited.
In some alternative embodiments, the tribo-electrode layer 31 comprises a transparent electrode. It can be understood that the transparent electrode has higher light transmittance, and can not cause adverse effect on the normal light emission of the display panel 1, so that the overall light transmittance of the display panel 1 is ensured, and meanwhile, the external light is also facilitated to enter the optical fingerprint element 2, so that the fingerprint image can be accurately identified.
Optionally, the transparent electrode has a grid structure, so as to further improve the transmittance of the transparent electrode.
Optionally, the front projection of the wiping layer 32 onto the display panel 1 coincides with the front projection of the transparent electrode onto the display panel 1. It can be appreciated that in this embodiment, the friction contact layer 32 may be configured as a plurality of block structures, where each block structure is configured corresponding to the transparent electrode, that is, the shape and size of the orthographic projection of the friction contact layer 32 on the display panel 1 are the same as the shape and size of the orthographic projection of the transparent electrode on the display panel 1, so that the arrangement is convenient and the cost is saved.
Alternatively, the material of the rubbing electrode layer 31 includes at least one of ITO (Indium tin oxide), silver, titanium aluminum, copper, molybdenum, and Indium tin oxide has conductivity and optical transparency, is easily deposited as a thin film, and has wet chemical resistance. Of course, the friction electrode layer 31 may be made of other materials, and is not particularly limited.
Referring to fig. 3, in some alternative embodiments, the display panel further includes an electrical parameter detecting portion 4, the transparent electrode is connected to the electrical parameter detecting portion 4, and the transparent electrode is grounded.
It is to be understood that the electrical parameter detecting portion 4 is a means for detecting the magnitude of the electrical parameter generated by the friction member 3 at the time of touch, and the electrical parameter detecting portion 4 may be a means for detecting at least one of the physical quantities such as the amount of charge, voltage, current, number of electrons, etc., as long as it is capable of distinguishing the fake fingerprint of forgery from the difference in the signal quantity generated by the living finger at the time of touching the friction contact layer 32.
The transparent electrode is grounded to enable the friction electrode layer 31 to generate a potential difference between the touch electrode layer and the ground terminal after touch, thereby generating a current or a voltage.
Referring to fig. 3 and 7, in some alternative embodiments, the display panel 1 includes an array layer 11, a display function layer 12, and a touch function layer 14 that are stacked in a thickness direction of the display device; the friction electrode layer 31 is disposed on the side of the touch functional layer 14 away from the display functional layer 12.
In this embodiment, the friction electrode layer 31 is disposed on the side of the touch functional layer 14 away from the display functional layer 12, so that the friction electrode layer 31 can be directly contacted with the friction contact layer 32, and the friction electrode layer 31 can be better matched with the friction contact layer 32, and meanwhile, interference of the touch electrode in the touch functional layer 14 on the friction electrode layer 31 can be avoided, so that accuracy of the friction assembly 3 in living body detection is improved.
In this embodiment, the friction electrode layer 31 may be directly prepared on the touch functional layer 14 by a photolithography process, or may be formed by externally attaching the friction electrode layer 31 and the friction contact layer 32 to a side of the touch functional layer 14 facing away from the display functional layer 12, which is not particularly limited.
Optionally, the array layer 11 includes a plurality of pixel circuits, where the pixel circuits may include a driving transistor, a thin film transistor such as a switching transistor, and a storage capacitor, and the thin film transistor includes a gate electrode G, a source electrode S, a drain electrode D, and an active layer Y, and the pixel circuits are electrically connected to the scan line, the data line, and the display function layer 12, so that when the display panel 1 operates, the on and off of each switching transistor may be controlled by the scan line, and when the switching transistor is on, a driving signal on the data line is transmitted to the driving transistor, so as to generate a driving current to the display function layer 12, so as to implement display of the display panel 1.
Alternatively, the display panel 1 is an OLED panel, and the display functional layer 12 includes a first electrode 121, a light emitting material layer 122, and a second electrode 123 sequentially stacked in a direction away from the array layer 11. One of the first electrode 121 and the second electrode 123 may be an anode, and the other may be a cathode. Alternatively, the first electrode 121 is an anode and the second electrode 123 is a cathode.
Optionally, a thin film encapsulation layer 13 is further included between the display function layer 12 and the touch function layer 14, and the thin film encapsulation layer 13 includes at least one inorganic layer and at least one organic layer stacked along the thickness direction of the display panel 1; the inorganic layer can be made of silicon nitride, silicon oxide, silicon oxynitride and other materials, and the organic layer can be made of resin or polymer organic materials, and can be formed by adopting an ink-jet printing process. Alternatively, the thin film encapsulation layer 13 includes a first inorganic layer, an organic layer, and a second inorganic layer, which are sequentially stacked in the thickness direction of the display panel 1.
In some alternative embodiments, the display panel 1 includes an array layer 11, a display function layer 12, and a touch function layer 14 that are stacked in a thickness direction of the display device, and the touch function layer 14 includes a touch electrode layer 142; the rubbing electrode layer 31 and the touch electrode layer 142 are provided in the same layer.
It can be understood that in the present embodiment, the friction electrode layer 31 and the touch electrode layer 142 are disposed in the same layer, i.e. the friction electrode layer 31 and the touch electrode layer 142 can be made of the same process and the same material, so as to reduce the production, and the driving algorithm and the pattern corresponding to the friction electrode layer 31 and the touch electrode layer 142 can be adjusted to avoid affecting the normal touch function of the display panel 1. Optionally, the touch functional layer 14 further includes a touch substrate 141 disposed between the thin film encapsulation layer 13 and the touch electrode layer 142.
In some alternative embodiments, the triboelectric charge density of the material of the triboelectric contact layer is greater than-60. Mu.C/m 2 . Friction wheelThe greater the triboelectric charge density of the material of the triboelectric contact layer, i.e. the more positive the triboelectric charge density of the material of the triboelectric contact layer, i.e. the weaker the electronegativity of the triboelectric contact layer, the greater the triboelectric charge density of the material of the triboelectric contact layer, the greater the triboelectric charge density of-60 [ mu ] C/m 2 When the electronegativity of the material of the friction contact layer is lower than that of the common silicone rubber material, for example, the silicone rubber material comprises a polydimethylsiloxane material with a friction charge density equal to-102.05 mu C/m 2 . The triboelectric charge density of the material of the triboelectric contact layer is greater than-60 mu C/m 2 I.e. the electronegativity of the material of the wiping layer is lower than the electronegativity of the polydimethylsiloxane material.
It should be noted that, the electronegativity of the material defining the friction contact layer is lower than that of the common silicone rubber material, because the silicone rubber material is generally used to make the finger model with the false fingerprint, so as to distinguish the effect generated when the living finger touches the friction contact layer 32 from the finger model to touch the friction contact layer 32, avoid the variation of electrical parameters such as voltage and current generated when the silicone rubber material is used to make the finger model with the false fingerprint touches the friction contact layer 32, and improve the accuracy of the friction assembly 3 for detecting the living body.
Optionally, the material of the friction contact layer 32 comprises a transparent polymer material to ensure a light transmitting effect of the friction contact layer 32, e.g., the material of the friction contact layer 32 comprises at least one of polyvinyl chloride, polyester.
Alternatively, the friction contact layer 32 may have a single-layer structure or a multi-layer structure, and when the multi-layer structure is adopted, the materials of the friction contact layer 32 may be different, so long as the electronegativity of the materials of the layers is lower than that of the common silicone rubber material.
Optionally, the rubbing contact layer 32 is reused as a protective layer to protect other film layers of the display panel 1 from being damaged, and when the rubbing contact layer 32 is reused as a protective layer, requirements on scratch resistance and impact resistance of materials are higher, specifically UTG (Ultra Thin Glass), CPI (Colorless Polyimide, transparent polyimide film), PET (Polyethylene Terephthalate ) and the like.
Referring to fig. 1, in some alternative embodiments, the display device includes a first display area AA1 and a second display area AA2 at least partially surrounding the first display area AA1, where the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA 2; the optical fingerprint element 2 and the rubbing electrode layer 31 are disposed in the first display area AA1.
It can be understood that the first display area AA1 is a light-transmitting area for setting optical elements such as the optical fingerprint element 2, and the light transmittance of the first display area AA1 is greater than that of the second display area AA2, so that the corresponding optical elements receive enough light entering amount, and the imaging effect is ensured.
It should be noted that, in addition to the first display area AA1 being able to be specifically disposed on the optical fingerprint element 2 and the friction electrode layer 31, in some alternative embodiments, the optical fingerprint element 2 and the friction electrode layer 31 may be disposed on the entire display panel 1, that is, the display area of the entire display panel 1 has a fingerprint identification function, so as to be convenient for a user to use.
Referring to fig. 8, the embodiment of the invention further provides a fingerprint identification method for a display device, which includes the following steps:
s110: acquiring a fingerprint image, and judging whether the matching degree between the fingerprint image and a reference image is larger than a first preset value or not;
s120: acquiring an electric parameter generated by the friction assembly 3, and judging whether the difference value between the electric parameter and a preset parameter is smaller than the preset difference value;
s130: and if the matching degree between the fingerprint image and the reference image is larger than a first preset value and the difference between the electric parameter and the preset parameter is smaller than the preset difference, confirming that the fingerprint identification is successful.
According to the fingerprint identification method of the display device, the accuracy of touch fingerprint identification is determined by acquiring the fingerprint image and judging whether the matching degree between the fingerprint image and the reference image is larger than the first preset value, meanwhile, the electric parameters generated by the friction assembly 3 can be acquired by utilizing the electric parameter detection part 4 and other parts, and whether the touch body is a living body, such as a living finger or not, instead of a fake finger model with fake fingerprints, can be judged according to the electric parameters, and accordingly the anti-counterfeiting capacity of the display device and the use safety of the display device can be improved.
In step S110, a fingerprint image may be obtained by the optical fingerprint element 2, the reference image is a fingerprint image pre-stored in the display device by the user, and if so, the user is determined to be the user, and if not, the user is not unlocked by judging whether the matching degree between the fingerprint image and the reference image is greater than a first preset value.
In step S120, the electrical parameter generated by the friction pack 3 may be acquired by the electrical parameter detecting portion 4. When the living body fingerprint is identified, the optical fingerprint element 2 and the electric parameter detecting unit 4 are synchronously turned on; subsequently, the optical fingerprint element 2 acquires a fingerprint image, and the electrical parameter detecting part 4 acquires electrical parameters (one of the electrical parameters is just required) such as voltage/current/electron number flowing through the external circuit and compares the electrical parameters with preset parameters; only when the matching degree of the fingerprint image and the electrical parameter recorded by the electrical parameter detecting part 4 meet the set threshold value at the same time, the living fingerprint identification can be judged to be successful, and the display device is successfully unlocked at this time and enters the main interface of the display device. If one of the two items does not meet the set threshold, the living fingerprint identification is considered to be failed, and the display device cannot be successfully unlocked.
The embodiment of the invention also provides electronic equipment, which comprises: display device, the display device is the display device in any one of the above embodiments
The electronic device provided in the embodiment of the present invention has the technical effects of the technical solution of the display device in any of the foregoing embodiments, and the explanation of the same or corresponding structure and terms as those of the foregoing embodiments is not repeated herein.
The display device provided by the embodiment of the invention can be applied to a mobile phone and can also be any electronic product with a display function, including but not limited to the following categories: television, notebook computer, desktop display, tablet computer, digital camera, smart bracelet, smart glasses, vehicle-mounted display, medical equipment, industrial control equipment, touch interactive terminal, etc., which are not particularly limited in this embodiment of the invention.
In the foregoing, only the specific embodiments of the present invention are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present invention is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present invention, and they should be included in the scope of the present invention.
It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
Claims (10)
1. A display device, comprising:
a display panel;
the friction assembly comprises a friction electrode layer and a friction contact layer, the friction electrode layer is arranged on the light emitting side of the display panel, the friction contact layer is arranged on one side, away from the display panel, of the friction electrode layer, and the friction contact layer is in contact with the friction electrode layer;
and the front projection of the friction contact layer and the friction electrode layer on the display panel covers the front projection of the optical fingerprint element on the display panel.
2. The display device according to claim 1, wherein the display panel includes an array layer, a display function layer, and a touch function layer which are stacked in a thickness direction of the display device;
the friction electrode layer is arranged on one side of the touch control functional layer, which is away from the display functional layer.
3. The display device according to claim 1, wherein the display panel includes an array layer, a display function layer, and a touch function layer, which are stacked in a thickness direction of the display device, the touch function layer including a touch electrode layer;
the friction electrode layer and the touch electrode layer are arranged on the same layer.
4. The display device according to claim 1, wherein the rubbing electrode layer includes a transparent electrode;
preferably, the transparent electrode is in a grid structure; preferably, the orthographic projection of the friction contact layer on the display panel is overlapped with the orthographic projection of the transparent electrode on the display panel.
5. The display device according to claim 1, further comprising an electrical parameter detecting portion, wherein the friction electrode layer is connected to the electrical parameter detecting portion, and wherein the friction electrode layer is grounded.
6. The display device according to claim 1, wherein a triboelectric charge density of a material of the triboelectric contact layer is more than-60 μC/m 2 ；
Preferably, the material of the friction contact layer comprises a transparent polymer material;
preferably, the material of the friction contact layer comprises at least one of polyvinyl chloride and polyester;
preferably, the friction contact layer is multiplexed as a protective layer.
7. The display device according to claim 1, wherein the display device includes a first display region and a second display region disposed at least partially around the first display region, the first display region having a light transmittance that is greater than a light transmittance of the second display region;
the optical fingerprint element and the friction electrode layer are both arranged in the first display area.
8. The fingerprint identification method for the display device is characterized by comprising the following steps of:
acquiring a fingerprint image and judging whether the matching degree between the fingerprint image and a reference image is larger than a first preset value or not;
acquiring an electrical parameter generated by the friction assembly, and judging whether the difference value between the electrical parameter and a preset parameter is smaller than the preset difference value;
and if the matching degree between the fingerprint image and the reference image is larger than the first preset value and the difference value between the electric parameter and the preset parameter is smaller than the preset difference value, confirming that the fingerprint identification is successful.
9. The fingerprint identification method of claim 8, wherein in the step of acquiring a fingerprint image, it comprises: acquiring a fingerprint image through an optical fingerprint element;
in the step of obtaining the electrical parameter generated by the friction assembly, it comprises: the electric parameter generated by the friction component is acquired by an electric parameter detecting part.
10. An electronic device, comprising: the display device according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310631537.7A CN116665255A (en) | 2023-05-31 | 2023-05-31 | Display device, fingerprint identification method of display device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310631537.7A CN116665255A (en) | 2023-05-31 | 2023-05-31 | Display device, fingerprint identification method of display device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116665255A true CN116665255A (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310631537.7A Pending CN116665255A (en) | 2023-05-31 | 2023-05-31 | Display device, fingerprint identification method of display device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116665255A (en) |
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2023
- 2023-05-31 CN CN202310631537.7A patent/CN116665255A/en active Pending
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