CN111626100B - Under-screen fingerprint device and display module - Google Patents
Under-screen fingerprint device and display module Download PDFInfo
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- CN111626100B CN111626100B CN202010283018.2A CN202010283018A CN111626100B CN 111626100 B CN111626100 B CN 111626100B CN 202010283018 A CN202010283018 A CN 202010283018A CN 111626100 B CN111626100 B CN 111626100B
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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
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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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
- G06V40/1382—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
- G06V40/1394—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger using acquisition arrangements
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Abstract
The invention provides an under-screen fingerprint device and a display module. The under-screen fingerprint device comprises a substrate and a photosensitive sensing array arranged on the substrate, wherein the photosensitive sensing array comprises a plurality of photosensitive units; an optical path guiding structure and a light filtering film layer are arranged above the photosensitive sensing array; the optical path guiding structure is provided with a plurality of first light holes, the optical filtering film layer comprises a plurality of optical filtering areas, each optical filtering area is provided with the same optical filtering film, and the optical filtering films in different areas are the same or different; the light path guiding structure comprises a light path guiding structure, a light path guiding structure and a light path guiding structure, wherein the light path guiding structure is characterized in that a region corresponding to at least part of photosensitive units of the light sensor array is a first light hole, and a region corresponding to at least part of photosensitive units of the light path guiding structure is a light filtering film; and the at least part of the photosensitive units are used for receiving the spectrum information which is emitted downwards from the direction of the display screen and passes through the corresponding filter film and the first light holes. The under-screen fingerprint device can effectively realize living fingerprint detection.
Description
Technical Field
The invention relates to the field of fingerprint identification and display, in particular to an under-screen fingerprint device and a display module comprising the under-screen fingerprint device.
Background
Based on the pursuit of a comprehensive screen, the under-screen fingerprint technology has been widely applied to terminal electronic devices such as mobile phones, and with the development of the technology, the precision of fingerprint identification is higher and higher.
However, in the prior art, an under-screen fingerprint identification device adopted by a terminal electronic device such as a mobile phone cannot well detect whether a fingerprint to be identified placed on a screen is a finger from a real person or a carrier carrying fingerprint texture information such as a fingerprint film. Thus, a great potential safety hazard exists, namely, fingerprint texture information of a person can be obtained and formed on carriers such as a fingerprint film, and the fingerprint coded lock of terminal electronic equipment such as a mobile phone of the person can be cracked.
Therefore, there is a need for an under-screen fingerprint device with living fingerprint recognition function.
Disclosure of Invention
A first object of the present invention is to provide an under-screen fingerprint device, which can solve the problem in terms of potential safety hazard caused by the fact that whether the fingerprint is a real finger or a fake fingerprint texture information carrier such as a "fingerprint film" cannot be identified in the prior art.
The invention provides an under-screen fingerprint device, which comprises a substrate and a photosensitive sensing array arranged on the substrate, wherein the photosensitive sensing array comprises a plurality of photosensitive units; an optical path guiding structure and a light filtering film layer are arranged above the photosensitive sensing array; the optical path guiding structure is provided with a plurality of first light holes, the optical filtering film layer comprises a plurality of optical filtering areas, each optical filtering area is provided with the same optical filtering film, the optical filtering films of different optical filtering areas are the same or different in types, the same optical filtering film allows the same wave band of transmitted light, and the different optical filtering films are different in wave band of transmitted light; the light path guiding structure comprises a light path guiding structure, a light path guiding structure and a light path guiding structure, wherein the light path guiding structure is characterized in that a region corresponding to at least part of photosensitive units of the light sensor array is a first light hole, and a region corresponding to at least part of photosensitive units of the light path guiding structure is a light filtering film; and the at least part of the photosensitive units are used for receiving the spectrum information which is emitted downwards from the direction of the display screen and passes through the corresponding filter film and the first light holes.
Optionally, the filter film of the filter film layer comprises a single-channel filter film and/or a multi-channel filter film; the single-channel filter film allows light of one wave band to pass through; the multi-channel filter film allows light of two or more wavelength bands to pass through.
Optionally, the light of each wave band allowed to pass through by the single-channel filter film and the multi-channel filter film is monochromatic visible light or infrared light.
Optionally, each of the single-color visible lights is red visible light, green visible light, blue visible light, yellow visible light, orange visible light or cyan visible light.
Optionally, the multi-channel filter film is a multi-channel filter film allowing red visible light and infrared light to pass through; and/or the multi-channel filter film is a multi-channel filter film allowing red visible light and green visible light to pass through; and/or the multi-channel filter film is a multi-channel filter film allowing orange visible light and blue visible light to pass through.
Optionally, the filter film of each filter area of the filter film layer is divided into m kinds, and the wavelength of n kinds of light allowed to pass through in the m kinds of filter films is in the range of 650-780 nanometers and/or 800-1500 nanometers; m and n are integers, and m is more than or equal to 2, and m is more than or equal to n is more than or equal to 2.
Optionally, the n filters allow the interval between wavelengths of transmitted light to be within 10-100 nanometers.
Optionally, all areas corresponding to the photosensitive units in each filtering area are covered with a filtering film; or, the region of each light filtering region, which is aligned with the first light holes and corresponds to the photosensitive unit, is covered with a light filtering film.
Optionally, a plurality of the filtering areas are distributed in a discrete state or continuously.
Optionally, the plurality of light filtering areas distributed in a discrete state are arranged at intervals in an array mode, or are arranged in a two-dimensional code mode, or are arranged at intervals in a Chinese character 'mi', cross, chinese character 'hui' and Chinese character 'kou'; the plurality of light filtering areas which are continuously distributed are arranged in a rice shape, a cross shape, a reverse shape or a mouth shape without interval.
Optionally, the wavelength band of light allowed to pass through by the filter film of each filter area is the same as the wavelength band of light emitted by the pixel corresponding to the filter film on the display screen.
Optionally, the fingerprint device under the screen includes at least one light supplementing unit, the light supplementing unit is arranged in an edge area of the substrate, and is used for emitting light to a fingerprint identification area on the display screen, and the light emitted by each light supplementing unit can penetrate at least one filter film.
Optionally, the under-screen fingerprint device further comprises a micro-lens layer; the micro-lens layer is arranged above the light path guiding structure, and the filter film layer is arranged between the micro-lens layer and the light path guiding structure.
Optionally, the light path guiding structure includes transparent insulating layer and shading layer, the position that corresponds with sensitization unit and filter film on the shading layer is provided with a plurality of first light trap.
Optionally, the transparent insulating layer and the light shielding layer are at least two layers and are sequentially arranged at intervals; along the direction approaching to the photosensitive sensor array, the aperture of the first light holes corresponding to the same photosensitive unit on the plurality of shading layers is gradually decreased.
Optionally, the optical filter layer is disposed above the optical path guiding structure; or the filter film layer is arranged between the shading layer and the photosensitive sensing array; or when the number of the light shielding layers is more than two, the filter film layer is arranged between any two adjacent light shielding layers.
Optionally, the light path guiding structure further comprises an infrared filter layer; when the filter film layer is provided with a filter film allowing infrared light to pass through, an opening is arranged at a position on the infrared filter layer corresponding to the filter film allowing infrared light to pass through.
Optionally, the light shielding layer is further provided with a second light hole, and at least one layer of light shielding layer is further provided above the light shielding layer provided with the second light hole, and the light shielding layer positioned above is light-tight at a position corresponding to the second light hole.
Optionally, the light shielding layer nearest to the photosensitive sensor array is provided with the second light holes.
Optionally, a region corresponding to the photosensitive unit in each optical filtering region is covered with an optical filtering film, wherein the region is aligned with the first light hole; and the region of each light filtering region, which is aligned with the second light holes and corresponds to the photosensitive unit, is covered with a light filtering film.
The second object of the present invention is to provide a display module, which includes a self-luminous display screen and the above-mentioned fingerprint device under the screen, wherein the fingerprint device under the screen is disposed below the self-luminous display screen.
Optionally, the self-luminous display screen comprises an OLED display screen or a Micro LED display screen.
The invention has the following beneficial effects:
the invention provides an under-screen fingerprint device which comprises a photosensitive sensing array, a light path guiding structure and a light filtering film layer, wherein the light path guiding structure and the light filtering film layer are positioned above the photosensitive sensing array, the area, corresponding to at least part of photosensitive units of the photosensitive sensing array, of the light path guiding structure is a first light hole, and the area, corresponding to at least part of photosensitive units, of the light filtering film layer is a light filtering film; when fingerprint identification is carried out, as the absorption degree of the actual finger and other false fingerprint texture information carriers on the spectrum is different, light emitted downwards from the display screen can pass through the filter film on the filter film layer and the first light holes on the light path guiding structure, and the light is received by the photosensitive units of the photosensitive sensing array, the received spectrum information is processed by the photosensitive units of the photosensitive sensing array, and whether the actual finger of a user or the false fingerprint texture information carrier such as a fingerprint film is positioned in the fingerprint identification area of the display screen can be identified, so that the function of living fingerprint identification is realized.
The display module provided by the invention comprises the fingerprint device under the screen, and can also identify whether the fingerprint identification area of the display screen is a real finger of a user or a fake fingerprint texture information carrier such as a fingerprint film or the like according to the spectrum information received by the photosensitive unit of the photosensitive sensor array, thereby realizing the function of living fingerprint identification.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an under-screen fingerprint device according to embodiment 1 of the present invention when mounted on a display screen;
FIG. 2 is a schematic diagram showing the top view of each structure of the under-screen fingerprint device according to embodiment 1 of the present invention;
FIG. 3 is a schematic cross-sectional view taken along the line A1-A2 in FIG. 2;
fig. 4 is a schematic structural view of a modified embodiment of embodiment 1 of the present invention;
FIG. 5 is a schematic illustration of an alternative arrangement of filter layers;
FIG. 6 is a schematic illustration of another alternative arrangement of filter layers;
FIG. 7 is a schematic illustration of yet another alternative arrangement of filter layers;
fig. 8 is a schematic structural view of a further modified embodiment of embodiment 1 of the present invention;
FIG. 9 is a schematic diagram showing the top view of each structure of the under-screen fingerprint device in embodiment 4 of the present invention;
FIG. 10 is a schematic cross-sectional view taken along the line A3-A4 in FIG. 9;
FIG. 11 is a schematic structural view of embodiment 5 of the present invention;
fig. 12 is a schematic diagram of the embodiment of fig. 11 when performing in vivo fingerprint detection.
Icon: 1-an under-screen fingerprint device; 2-a display screen; 10-a substrate; 11-a photosensitive sensor array; 12-an optical path guiding structure; 13-a filter film layer; 14-microlenses; 120-a first light hole; 121-a transparent insulating layer; 122-a light shielding layer; 123-an infrared filter layer; 15-a light supplementing unit; 124-second light holes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art without the inventive effort, are intended to be within the scope of the invention as claimed, based on the specific embodiments described below.
The invention provides an under-screen fingerprint device, in an implementation mode, as shown in fig. 1 to 3, the under-screen fingerprint device 1 is arranged below a display screen 2, and the display screen 2 is specifically a self-luminous display screen, such as an OLED display screen or a Micro LED display screen. The off-screen fingerprint device 1 comprises a substrate 10 and a photosensitive sensor array 11 arranged on the substrate 10, said photosensitive sensor array 11 comprising a plurality of photosensitive cells. Above the photosensor array 11, an optical path guiding structure 12, a filter film layer 13, and microlenses 14 are provided. The light path guiding structure 12 has a plurality of first light holes 120, the filter film layer 13 includes a plurality of filter areas, each filter area has the same filter film, and the filter films of different areas are the same or different, that is, the filter film layer 13 includes one or more filter films; the same type of filter film means that the wavelength band of light allowed to pass therethrough is the same, and different types of filter films means that the wavelength band of light allowed to pass therethrough is different. The area of the light path guiding structure 12 corresponding to at least part of the photosensitive units of the photosensitive sensor array 11 is a first light hole 120, and the area of the filter film layer 13 corresponding to the at least part of the photosensitive units is a filter film; and the at least part of the photosensitive units are used for receiving the spectrum information which is emitted downwards from the display screen 2 and passes through the corresponding filter film and the first light holes 120 to reach the photosensitive units.
In use, when a fake fingerprint texture information carrier such as a user's finger or a "fingerprint film" touches a fingerprint recognition area of the display screen 2, the display screen 2 emits light in the direction of the user's finger, and the fake fingerprint texture information carrier such as the user's finger or the "fingerprint film" is reflected downward (for convenience of description, the direction of the under-screen fingerprint device 1 relative to the display screen 2 is defined as below, and the opposite direction is defined as above), and is directed to the under-screen fingerprint device 1, and the under-screen fingerprint device is subjected to light path processing at the microlens 14, and continues to propagate downward, through the filter film on the filter film layer 13, and the first light transmitting holes 120, to reach corresponding photosensitive units on the photosensitive sensor array 11. Since the absorption of the spectrum is different for the fake fingerprint texture information carrier such as the real finger and the fingerprint film of the user, that is, the spectrum information is different after the same light is reflected by the real finger and the fake fingerprint texture information carrier such as the fingerprint film. Therefore, in the present embodiment, the photosensitive unit of the photosensitive sensor array 11 processes the received spectrum information, so that it can be accurately determined that the fingerprint identification area of the display screen 2 is the actual finger of the user or is a fake fingerprint texture information carrier such as "fingerprint film", that is, the living fingerprint detection function is realized.
Example 1 of (one) an off-screen fingerprint device
In the present embodiment, referring to fig. 2 and 3, fig. 2 shows the correspondence relationship of the light path guiding structure 12, the filter film layer 13 and the microlenses 14 in the top view, and fig. 3 is a schematic sectional view along the direction A1-A2 in fig. 2. In fig. 2, each small square is a photosensitive unit of the photosensitive array 11, and the area of the light path guiding structure 12 corresponding to each photosensitive unit is provided with a first light hole 120 as required, wherein the square with small holes inside indicates that the area of the light path guiding structure 12 corresponding to the photosensitive unit is provided with the first light hole 120, and the square without small holes inside indicates that the area of the light path guiding structure 12 corresponding to the photosensitive unit is not provided with the first light hole 120. The area of the filter layer 13 corresponding to each photosensitive unit is also provided with a filter film according to the need, and in this embodiment, the filter films of the plurality of filter areas are single-channel filter films, and the single-channel filter films allow light of one band to pass through. Specifically, as shown in the figure, the square marked with R indicates that the region corresponding to the photosensitive unit on the filter layer 13 is a filter film that allows red visible light to pass through; the square marked with B indicates that the area corresponding to the photosensitive unit on the filter film layer 13 is a filter film allowing blue visible light to pass through; the square marked with Y indicates that the region corresponding to the photosensitive unit on the filter film layer 13 is a filter film allowing yellow visible light to pass through; the grid marked with G indicates that the region corresponding to the photosensitive unit on the filter film layer 13 is a filter film allowing green visible light to pass through; the square marked with O indicates that the region corresponding to the photosensitive unit on the filter film layer 13 is a filter film allowing orange visible light to pass through; the square marked with C indicates that the region corresponding to the photosensitive unit on the filter film layer 13 is a filter film allowing cyan visible light to pass through; the squares not marked with any pattern indicate that the area of the filter film layer 13 corresponding to the photosensitive unit is transparent and does not play a role in filtering out light of a specific wavelength.
In this embodiment, the filter layer 13 includes multiple single-channel filter films, which allow red visible light, green visible light, blue visible light, yellow visible light, cyan visible light and orange visible light to pass through, respectively, and it can be understood that, in a certain range, the more the types of filter films included in the filter layer, the more abundant the spectral information it receives for the photosensitive sensor array 11, and the more accurate the detection of the live fingerprint, so in this embodiment, the higher the accuracy and success rate of the detection of the live fingerprint by the off-screen fingerprint device can be realized. Of course, the more kinds of filter films contained in the filter film layer 13, the higher the manufacturing cost. In practice, the filter included in the filter layer 13 may be any one or more of the various visible light bands listed above, or may be any other light band.
In practice, since the photosensitive cells can only receive collimated light information and each photosensitive cell is small, in this embodiment, as shown in fig. 2, a 2×2 array of 4 photosensitive cells corresponds to one microlens 14, and correspondingly, on the light path guiding structure 12 and the filter layer 13, the area corresponding to the photosensitive cell of a single 2×2 array corresponds to this microlens 14. That is, each microlens 14 performs optical path processing on light emitted downward from the display screen direction, and passes through the first light transmission hole 120 provided in the corresponding region of the optical path guiding structure 12 and the filter film of the corresponding filter region of the filter film layer 13 to reach one of the photosensitive cells of the 2×2 array, by which optical information is processed. In the scheme shown in fig. 2, in each photosensitive unit of the 2×2 array, the region on the filter layer 13 corresponding to the first light holes 120 is provided with a filter film, and other regions may not be provided with a filter film.
As shown in fig. 3, the light path guiding structure 12 includes a transparent insulating layer 121 and a light shielding layer 122, and the number of the transparent insulating layer 121 and the light shielding layer 122 is multiple, which are sequentially arranged at intervals. Specifically, the transparent insulating layer 121 and the light shielding layer 122 are two layers, the light shielding layer 122 is arranged below, and the transparent insulating layer 121 is arranged above in sequence; the filter film layer 13 is disposed on the uppermost transparent insulating layer 121.
Generally, in preparing the optical path guiding structure 12, a semiconductor process such as deposition and etching is generally used; after the first light holes 120 are formed on the light shielding layer 122 by etching or the like, the material of the transparent insulating layer 121 is filled in the first light holes 120 when a process of an adjacent layer is performed. However, in fig. 3 of the present embodiment, and in several other subsequent cross-sectional drawings, the first light holes 120 are shown in blank for the sake of brevity and clarity.
When fingerprint identification is performed, light emitted from the upper side to the lower side passes through the filter film layer 13, then sequentially passes through the first light holes 120 on each light shielding layer 122, and reaches the photosensitive units of the photosensitive sensor array 11 located below. Also, preferably, the apertures of the first light holes 120 corresponding to the same photosensitive cells on the plurality of light shielding layers 122 decrease in a direction approaching the photosensitive array 11. In this case, the aperture of the first light transmitting hole of the light shielding layer 122 located above is large and may be significantly larger than the size of the photosensitive unit, so that more light may be introduced into the photosensitive unit of the photosensitive sensor array 11, so that the photosensitive unit receives more spectrum information. Generally, the aperture of the first light-transmitting holes 120 on the uppermost light-shielding layer 122 is not more than 10 micrometers, and the aperture of the first light-transmitting holes 120 on the lowermost light-shielding layer 122 is 2-3 micrometers.
(II) modification of the above embodiment 1
In the above embodiment 1, the filter film layer 13 includes a plurality of single-channel filter films that allow a plurality of visible light such as red visible light, green visible light, blue visible light, yellow visible light, cyan visible light, and orange visible light to pass through, respectively; however, on the basis of the above-described embodiment 1, as a modification, the filter film layer 13 may include a filter film that allows transmission of infrared light (for example, a single-channel filter film that allows transmission of only infrared light, or a multi-channel filter film that allows transmission of infrared light and light of other wavelength bands). As shown in fig. 4, the light path guiding structure 12 includes an infrared filter layer 123, and the infrared filter layer 123 may be disposed, for example, at a position between the light shielding layer 122 and the transparent insulating layer 121 nearest to the substrate 10. In the present embodiment having a filter film that allows infrared light to pass therethrough, an aperture (not shown in the figure) is provided in the infrared filter layer 123 at a position corresponding to the filter film that allows infrared light to pass therethrough for receiving by the photosensitive cells of the underlying photosensitive sensor array 11, and the infrared filter layer 123 is provided at a position corresponding to the other filter film for filtering out infrared light.
In the above embodiment, the filter layer 13 generally includes two or more kinds of filter films. But may also comprise a filter film, in which case part of the area on the filter film layer 13 is provided with a filter film, while the other areas are not provided with a filter film; the photosensitive units on the photosensitive sensor array 11 can be compared according to the spectrum information obtained by the two partial areas, so that the detection of the living fingerprints can be realized.
As a further modification, the number of the light shielding layers 122 is not limited to 2 layers, but may be at least one layer on the basis of the above embodiment 1; may further comprise 3 light shielding layers; of course, there may be more light shielding layers 122. Typically, the number of light shielding layers 122 is within 10 layers; when the light shielding layer 122 is further increased, a significant increase in thickness of the under-screen fingerprint device 1 is brought about, which may have an adverse effect in other respects.
In the above embodiment 1, the filter film is provided in each of the filter regions in the region corresponding to the photosensitive unit and aligned with the first light transmitting holes 120, and the other regions are transparent and do not function to filter light of a specific wavelength, but the present invention is not limited thereto, and in the above embodiment 1, as a third modification, the filter film may be covered in each of the filter regions of the filter film layer 13 in the region corresponding to the photosensitive unit, that is, the transparent region is also provided with the filter film, which is convenient for design of the scheme and easy for process implementation. For example, the filter film layer is set in the pattern shown in fig. 5 to 7, that is, the filter film on the filter film layer 13 is set in the form of a plurality of filter regions each having the same color filter film.
In particular, in the embodiment shown in fig. 5, a plurality of filter areas on the filter film layer 13 are arranged at intervals in an array, and each filter area includes 4×4 filter films, and the 4×4 filter films are the same color. Of course, as for the colors of the filter regions, each filter region may be various colors, and is not limited to the colors indicated in the drawing.
In the embodiment shown in figure 6 of the drawings, the plurality of filter areas on the filter layer 13 are arranged at intervals in a shape of a Chinese character kou, and when so arranged, pixels at positions on the display screen corresponding to the edge regions of the filter layer 13 emit light for living body fingerprint recognition, the pixels at the positions corresponding to the middle region of the filter layer 13 may be used for normal display, such as displaying a fingerprint identification.
In the embodiment shown in fig. 7, a plurality of filter regions are arranged at intervals of a cross shape, each filter region including 4×4 filter films, the 4×4 filter films being of the same color. By the arrangement, the living fingerprint can be identified in the edge area and the middle area, and a better living fingerprint identification effect can be obtained.
In addition to the embodiments shown in fig. 5 to 7, the plurality of filter areas of the filter film layer 13 may be arranged in other discrete states, for example, in a m-shape, a back-shape, or other forms, or may be arranged randomly, such as in two-dimensional codes. Taking a back-shaped arrangement mode as an example, the filter film at the periphery can be a single-channel filter film or a multi-channel filter film which allows infrared light to pass through, and the filter film at the inner side can be a single-channel filter film or a multi-channel filter film which allows visible light to pass through; or conversely, the filter film at the periphery may be a single-channel filter film or a multi-channel filter film allowing visible light to pass through, and the filter film at the inner side may be a single-channel filter film or a multi-channel filter film allowing infrared light to pass through.
When a plurality of filter areas are arranged, corresponding changes can be made on the basis of the arrangement schemes shown in fig. 5 to 7. For example, the filter film included in each filter region may be 2×2, 3×3, 5×5, or the like. And, for each of the filter regions, all regions corresponding to the photosensitive cells within the range thereof may have the filter film, or only regions corresponding to a part of the photosensitive cells may have the filter film. And, the filter film of each filter region is not limited to allow transmission of red visible light, green visible light, blue visible light, but may be a filter film allowing transmission of any one of visible light or infrared light. And, for the arrangement scheme of the m-shape, cross-shape, back-shape or mouth-shape, and other possible arrangement schemes, each filter area is not limited to the arrangement mode of interval, and may be arranged in a continuous mode.
In the above embodiment 1, since the light sensing unit can only receive collimated light information and the area of the light sensing unit is small, there is a possibility that the light sensing unit is blocked by the display driving circuit of the display screen, so that the 2×2 array of 4 light sensing units is "combined" into one large unit to ensure that the received signal is used enough to correspond to one microlens 14, but the present invention is not limited thereto, and as a fourth modification, the light sensing unit corresponding to one microlens 14 may be other numbers and arrangements, for example, in the embodiment shown in fig. 8, the 3×3 array of 9 light sensing units is "combined" into one large unit to correspond to one microlens 14.
On the basis of the above-described embodiment 1, as a fifth modification, the arrangement position of the filter film layer 13 is not limited to being above the optical path guiding structure 12, and in other modification embodiments, the filter film layer 13 may be arranged between the light shielding layer 122 and the photosensitive sensor array 11; alternatively, when the number of the light shielding layers 122 is two or more, the filter layer 13 may be disposed between any two adjacent light shielding layers 122.
On the basis of the above-described embodiment 1, as a sixth modification, the filter film layer 13 includes m kinds of filter films, and among the m kinds of filter films, the number of filter films that allow the transmitted light to have a wavelength in the two interval ranges of 650 to 780 nm and 800 to 1500 nm is n; m and n are integers, and m is more than or equal to 2, and m is more than or equal to n is more than or equal to 2. That is, among the various kinds of filter films included in the filter film layer 13, all the filter films may allow the light to pass through in the two ranges of 650 to 780 nm and 800 to 1500 nm; on the premise of having a plurality of light-transmitting wave bands in the two interval ranges, there are also other filter films that allow the light to pass through outside the two ranges.
Specifically, since the finger of the person is sensitive to the light with the wavelength of 650-780 nm and 800-1500 nm, when the light reflected downwards by the finger of the person or other fingerprint texture information carriers for fingerprint identification passes through the filter film in the fingerprint identification area of the display screen, the photosensitive unit can obtain more abundant information for identifying the living fingerprint, thereby improving the accuracy of fingerprint identification.
Alternatively, the various filter films of the plurality of filter regions may also each allow the wavelength of transmitted light to be in the range of 650-780 nanometers, or in the range of 800-1500 nanometers.
Among the n kinds of filter films which allow the light to pass through, the wavelength of the light which allows the light to pass through is between 650 and 780 nanometers and between 800 and 1500 nanometers, and the interval between the wavelengths of the light which allows the light to pass through by different filter films is between 10 and 100 nanometers; considering the difficulty of the processing technology of the filter film, the interval between the wavelengths of light allowed to pass through by different filter films can be selected to be 30 nanometers or 50 nanometers. Taking 50 nanometers as an example, three kinds of filter films of 650 nanometers, 700 nanometers, 750 nanometers and the like can be arranged in the wavelength range of 650-780 nanometers.
(third) example 2 of an off-screen fingerprint device
This embodiment is a further modification of the above embodiment 1, and on the basis of the above embodiment 1 and its modified embodiments, the wavelength band of light allowed to pass through by the filter film of each filter area on the filter film layer 13 is the same as the color of light emitted from the pixel corresponding to this filter film on the display screen 2. It can be understood that the light emitted by the pixels of a certain color of the display screen 2 reaches the corresponding filtering area on the filtering film layer 13 when being reflected by a finger or other fingerprint texture information carrier and then being emitted to the lower side in the fingerprint identification area of the display screen, and more light can penetrate the filtering film when meeting the same color filtering film, so that the photosensitive units of the photosensitive sensor array 11 can perform spectrum identification processing better and more accurately, and the accuracy, success rate and the like of living fingerprint detection can be improved. In particular, in the present embodiment, to achieve this object, the filter film layer 13 may include a filter film that allows transmission of red visible light, a filter film that allows transmission of green visible light, a filter film that allows transmission of blue visible light; the three filter films only allow red visible light, green visible light and blue visible light to pass through respectively. By the arrangement, the requirement of corresponding the color of the filter film layer 13 to the color of the pixels on the display screen 2 can be better met, and only a certain filter film on the filter film layer 13 is required to be corresponding to the pixels with the same color on the display screen 2 in the approximately vertical direction.
(fourth) example 3 of an off-Screen fingerprint device
This embodiment is a further improvement of the foregoing embodiment 1 and embodiment 2, where, based on the foregoing embodiment 1 and its modified embodiments and embodiment 2, the under-screen fingerprint device 1 includes at least one light compensating unit 15, where the light compensating unit 15 is disposed in an edge area of the substrate 10, and is configured to emit light to a fingerprint identification area on the display screen 2, and the light emitted by each light compensating unit 15 can pass through at least one of the optical filters. For example, the light supplementing unit 15 emits white light, and the white light can penetrate through various filter films; the light supplementing unit 15 emits red light, and the red light can pass through the filter film allowing the red visible light to pass through. By providing the light supplementing unit 15, on the one hand, the brightness of the light emitted to the fingerprint identification area of the display screen 2 can be enhanced, the problem that the success rate of detecting the living body fingerprint is reduced due to the fact that the light provided by the light sensing unit of the photosensitive sensing array 11 is less because of insufficient light provided by the display screen 2 in a dim light environment is solved, at this time, the light supplementing unit 15 emits the light to the fingerprint identification area on the display screen 2, enough light can be provided, and the light spectrum information emitted from above to below and received by the light sensing unit of the photosensitive sensing array 11 is enough, so that the success rate of detecting the living body fingerprint can be improved; on the other hand, since the wavelength range of the light that can be generated by the display screen 2 is narrower, the light supplementing unit 15 is arranged, and the spectrum range can be further expanded, so that the spectrum range received by the photosensitive unit of the photosensitive sensing array 11 is wider, and the accuracy of detecting the living fingerprint by the photosensitive sensing array 11 can be increased.
Specifically, in the present embodiment, the number of the light supplementing units 15 is one or more. When the number of the light supplementing units 15 is plural, the arrangement positions of the plurality of light supplementing units 15 may be arbitrarily arranged as needed, for example, uniformly arranged at the periphery of the substrate 10 or arranged on a certain side of the substrate 10.
The light supplementing unit 15 may be a white light LED, a monochromatic light LED, or an infrared light LED. For example, a white light LED may increase the intensity of light while expanding the width of the spectrum that can be received by the photosensitive cells of the photosensitive sensor array 11; when a filter film that allows yellow visible light and cyan visible light to pass through is provided on the filter film layer 13, monochromatic light LEDs of colors corresponding to yellow, cyan, and the like may be provided; when a filter film that allows infrared light to pass through is provided on the filter film layer 13, an infrared light LED may be provided as the light supplementing unit 15. When the number of the light supplementing units 15 is plural, the type of each light supplementing unit 15 may be selected as desired from any one of the above white light LEDs, monochromatic light LEDs, or infrared light LEDs, and at the same time, the position of each light supplementing unit 15 may be set as desired.
(fifth) example 4 of an off-screen fingerprint device
As a further improvement of the above-mentioned embodiment 1, embodiment 2, and embodiment 3, on the basis of the above-mentioned embodiment 1 and its modified embodiments, embodiment 2, and embodiment 3, as shown in fig. 9 and 10, the light shielding layer 122 is further provided with second light holes 124, and in fig. 9, the second light holes 124 are represented by black dots; the light shielding layer 122 provided with the second light holes 124 is further provided with at least one light shielding layer 122, and the light shielding layer 122 above is light-tight at the position corresponding to the second light holes 124. In one aspect, the second light holes 124 may be disposed such that light that is not directly emitted from above but is obliquely emitted to below can continue to emit from the second light holes 124 to the lower layer after being reflected multiple times. On the other hand, since the aperture of the first light-transmitting hole 120 on the plurality of light-shielding layers 122 decreases in a direction approaching the photosensitive array 11, a portion of light inevitably irradiates the protruding portion of the light-shielding layer 122 above a certain light-shielding layer 122 when passing through the first light-transmitting hole 120, and the portion of light may be reflected and then emitted downward through the second light-transmitting hole 124.
As shown in fig. 10, if the light shielding layer 122 of the second light transmitting hole 124 is the lowermost light shielding layer 122, the light passing through the second light transmitting hole 124 is directly directed to the photosensitive unit of the photosensitive sensor array 11 located below and received by the photosensitive unit of the photosensitive sensor array 11 for processing. If the light shielding layer 122 of the second light transmitting hole 124 is not the lowermost light shielding layer 122, the light passing through the second light transmitting hole 124 passes through the first light transmitting hole 120 on the lower light shielding layer 122 and is finally received by the photosensitive unit of the photosensitive array 11 for processing.
In the present embodiment, similarly to the embodiment shown in fig. 2, the filter film is provided in the region corresponding to the photosensitive unit in the filter region of the filter film layer 13 aligned with the first light holes 120, but in addition thereto, the filter film is also provided in the region corresponding to the photosensitive unit in the second light holes 124, that is, as shown in fig. 9.
Of course, in the modified embodiment of the present embodiment, all the areas corresponding to the photosensitive units in the filter areas of the filter film layer 13 may be covered with the filter film to facilitate design of the solution and implementation of the process.
(sixth) example 5 of an off-screen fingerprint device
This embodiment is a further modification of the above-described embodiments 1 to 4, and the filter layer 13 includes a multi-channel filter that allows light of two or more wavelength bands to pass therethrough. Also, the number of the multi-channel filter films may be one or more.
Referring to fig. 11, in fig. 11, the filter film on the left side on the filter film layer 13 is a two-channel filter film that allows red visible light and green visible light to pass through (denoted by r+g in the figure); the filter on the right side is also a two-channel filter that allows orange visible light and blue visible light to pass through (represented by o+b in the figure).
When in living fingerprint detection, different monochromatic visible light can be emitted from the areas of the display screen corresponding to different double-channel filter films, and after the monochromatic visible light is reflected by a finger or other fingerprint texture information carriers, the monochromatic visible light passes through the corresponding double-channel filter films and is received by the corresponding photosensitive units. For example, as shown in fig. 12, red visible light (indicated by an R arrow) is transmitted through the leftmost two-channel filter film and is emitted to the lower photosensitive unit; the second two-channel filter film from left is blue visible light (represented by B arrow) to transmit; the rightmost two-channel filter film is orange visible light (represented by an O arrow) to transmit; the second two-channel filter from the right is the transmission of green visible light (indicated by the G arrow).
Further, for the dual-channel filter film, the pixels of the corresponding area on the display screen alternately emit two types of light that the dual-channel filter film allows to pass through. Taking the leftmost two-channel filter film in fig. 12 as an example, the pixels in the corresponding region of the display screen firstly emit red visible light, and the red visible light is received by the corresponding photosensitive units from above through the two-channel filter film; then, the pixels of the corresponding area of the display screen emit green visible light, which is received by the corresponding photosensitive units from above through the two-channel filter film. The photosensitive units receiving the red visible light and the green visible light perform living fingerprint identification according to the information of the two lights which are alternately received.
For the photosensitive unit, the more and more abundant the spectrum information it can receive, the higher and finer the accuracy of the living fingerprint detection. Therefore, in some cases, the types of the filter film disposed on the filter film layer 13 are relatively large for fine detection, for example, the filter film allowing the red visible light, the blue visible light, the green visible light, the yellow visible light, the violet visible light, the orange visible light, and the infrared visible light to transmit is disposed at the same time, so that the cost of the filter film layer 13 is greatly increased.
In this embodiment, the filter film of the filter film layer 13 is set as a dual-channel filter film, and each filter film can simultaneously allow red visible light and green visible light to pass through, or simultaneously allow orange visible light and blue visible light to pass through, so that the number of types of filter films can be greatly reduced, the preparation cost of the filter film layer 13 is reduced, and the fine detection of the living fingerprint is realized in a low-cost manner.
In this embodiment, the multi-channel filter may be a dual-channel filter that allows light in two bands to pass through, or may be a filter that allows light in three, four, or more bands to pass through, so that the number of types of filters that need to be disposed in the filter layer 13 may be reduced more greatly, and the manufacturing cost of the filter layer 13 may be further reduced.
In addition, the OLED display screen can emit infrared light, and the reflection ratio of human fingers to red visible light and infrared light is high, so that the multi-channel filter film can be a double-channel filter film or a multi-channel filter film which can allow the red visible light and the infrared light to pass through simultaneously. The arrangement can more effectively utilize the light provided by the OLED display screen, and meanwhile, the accuracy of living fingerprint detection can be higher.
In summary, the under-screen fingerprint device 1 provided by the present invention includes a photosensitive sensor array 11, and an optical path guiding structure 12 and a filter layer 13 above the photosensitive sensor array 11, wherein an area of the optical path guiding structure 12 corresponding to at least a portion of photosensitive units of the photosensitive sensor array 11 is a first light hole 120, and an area of the filter layer 13 corresponding to the at least a portion of photosensitive units is a filter; when fingerprint identification is performed, because the absorption degree of the actual finger and other false fingerprint texture information carriers on the spectrum is different, light emitted downwards from the display screen 2 can pass through the filter film on the filter film layer 13 and the first light holes 120 on the light path guiding structure 12, and are received by the photosensitive units of the photosensitive sensing array 11, and the received spectrum information is processed by the photosensitive units of the photosensitive sensing array 11, so that the false fingerprint texture information carrier such as the actual finger of a user, the fingerprint film and the like which are positioned in the fingerprint identification area of the display screen 2 can be identified, and the function of living fingerprint identification is realized.
The invention also provides a display module, in an implementation mode thereof, the display module comprises a self-luminous display screen and the under-screen fingerprint device provided in the embodiment, wherein the under-screen fingerprint device is arranged below the self-luminous display screen.
Specifically, the self-luminous display screen comprises an OLED display screen or a Micro LED display screen.
In summary, the display module provided by the invention comprises the under-screen fingerprint device in the embodiment, and can identify whether the fingerprint identification area of the display screen is a real finger of a user or a fake fingerprint texture information carrier such as a fingerprint film according to the spectrum information received by the photosensitive unit of the photosensitive sensor array, thereby realizing the function of living fingerprint identification.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (19)
1. An under-screen fingerprint device, which is characterized by comprising a substrate and a photosensitive sensing array arranged on the substrate, wherein the photosensitive sensing array comprises a plurality of photosensitive units; an optical path guiding structure and a light filtering film layer are arranged above the photosensitive sensing array;
the optical path guiding structure is provided with a plurality of first light holes, the optical filtering film layer comprises a plurality of optical filtering areas, each optical filtering area is provided with the same optical filtering film, the optical filtering films of different optical filtering areas are the same or different in types, the same optical filtering film allows the same wave band of transmitted light, and the different optical filtering films are different in wave band of transmitted light;
the light path guiding structure comprises a light path guiding structure, a light path guiding structure and a light path guiding structure, wherein the light path guiding structure is characterized in that a region corresponding to at least part of photosensitive units of the light sensor array is a first light hole, and a region corresponding to at least part of photosensitive units of the light path guiding structure is a light filtering film; the at least part of the photosensitive units are used for receiving the spectrum information which is emitted downwards from the direction of the display screen and passes through the corresponding filter film and the first light holes;
the light path guiding structure comprises a transparent insulating layer and a shading layer, and a plurality of first light holes are formed in the shading layer at positions corresponding to the photosensitive units and the light filtering films;
The transparent insulating layers and the shading layers are at least two layers in number and are sequentially arranged at intervals;
along the direction approaching to the photosensitive sensing array, the aperture of the first light holes corresponding to the same photosensitive unit on the plurality of shading layers is gradually decreased;
the light shielding layer is also provided with a second light hole, at least one layer of light shielding layer is arranged above the light shielding layer provided with the second light hole, and the light shielding layer positioned above is light-tight at the position corresponding to the second light hole;
the filter film of the filter film layer comprises a single-channel filter film which allows light of one wave band to pass through.
2. The under-screen fingerprint device of claim 1, wherein the filter of the filter layer comprises a multi-channel filter;
the multi-channel filter allows light in two or more bands to pass through.
3. The under-screen fingerprint device according to claim 2, wherein the light of each wavelength band that the single-channel filter film and the multi-channel filter film allow to transmit is monochromatic visible light or infrared light.
4. An under-screen fingerprint device according to claim 3, wherein each of said monochromatic visible light is red visible light, green visible light, blue visible light, yellow visible light, orange visible light or cyan visible light.
5. The under-screen fingerprint device according to claim 2, wherein the multi-channel filter is a multi-channel filter that allows red visible light and infrared light to pass through; and/or
The multi-channel filter film is a multi-channel filter film allowing red visible light and green visible light to pass through; and/or
The multi-channel filter film is a multi-channel filter film allowing orange visible light and blue visible light to pass through.
6. The under-screen fingerprint device according to claim 1 or 2, wherein the filter film of each filter area of the filter film layer is divided into m types, and the wavelength of n types of light allowed to pass through in the m types of filter films is in the range of 650-780 nm and/or 800-1500 nm;
m and n are integers, and m is more than or equal to 2, and m is more than or equal to n is more than or equal to 2.
7. The under-screen fingerprint device according to claim 6, wherein the n kinds of filter films allow the interval between wavelengths of transmitted light to be within 10-100 nm.
8. The under-screen fingerprint device according to claim 1, wherein the area corresponding to the photosensitive unit in each of the filter areas is entirely covered with the filter film; or alternatively
And the region, which is in alignment with the first light holes and corresponds to the photosensitive unit, of each light filtering region is covered with a light filtering film.
9. The under-screen fingerprint device of claim 1, wherein a plurality of the filter regions are distributed in a discrete state or a continuous state.
10. The under-screen fingerprint device according to claim 9, wherein a plurality of filter areas distributed in a discrete state are arranged at intervals in an array manner, or are arranged in a two-dimensional code manner, or are arranged at intervals in a m-shape, cross-shape, back-shape, and mouth-shape;
the plurality of light filtering areas which are continuously distributed are arranged in a rice shape, a cross shape, a reverse shape or a mouth shape without interval.
11. The under-screen fingerprint device according to claim 1, wherein the light band allowed to pass through by the filter film of each of the filter areas is the same as the light band emitted from the pixel corresponding to the filter film on the display screen.
12. The under-screen fingerprint device of claim 1, wherein the under-screen fingerprint device comprises at least one light supplementing unit disposed at an edge region of the substrate for emitting light to a fingerprint recognition region on a display screen, each light supplementing unit emitting light that is permeable to at least one of the optical filters.
13. The under-screen fingerprint device of claim 1, wherein the under-screen fingerprint device further comprises a layer of microlenses;
The micro-lens layer is arranged above the light path guiding structure, and the filter film layer is arranged between the micro-lens layer and the light path guiding structure.
14. The under-screen fingerprint device according to claim 1, wherein the filter film layer is disposed above the light path guiding structure; or alternatively
The filter film layer is arranged between the shading layer and the photosensitive sensing array; or alternatively
When the number of the light shielding layers is more than two, the filter film layer is arranged between any two adjacent light shielding layers.
15. The under-screen fingerprint device of claim 1, wherein the light path guiding structure further comprises an infrared filter layer;
when the filter film layer is provided with a filter film allowing infrared light to pass through, an opening is arranged at a position on the infrared filter layer corresponding to the filter film allowing infrared light to pass through.
16. The under-screen fingerprint device according to claim 1, wherein the second light-transmitting holes are provided on the light-shielding layer nearest to the photosensitive sensor array.
17. The under-screen fingerprint device according to claim 1 or 16, wherein an area in each of the filter areas, which is aligned with the first light-transmitting hole and corresponds to the photosensitive unit, is covered with a filter film;
And the region of each light filtering region, which is aligned with the second light holes and corresponds to the photosensitive unit, is covered with a light filtering film.
18. A display module comprising a self-luminous display screen and an under-screen fingerprint device as claimed in any one of claims 1 to 17, said under-screen fingerprint device being disposed below said self-luminous display screen.
19. The display module of claim 18, wherein the self-luminous display screen comprises an OLED display screen or a Micro LED display screen.
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| US11839118B2 (en) | 2020-09-23 | 2023-12-05 | Boe Technology Group Co., Ltd. | Organic light-emitting display panel and display apparatus |
| US20220320170A1 (en) * | 2020-09-25 | 2022-10-06 | Boe Technology Group Co., Ltd. | Fingerprint recognition module, fabricating method thereof and display device |
| CN112380964A (en) * | 2020-11-11 | 2021-02-19 | 京东方科技集团股份有限公司 | Photoelectric detection substrate and display device |
| TWI749864B (en) * | 2020-11-12 | 2021-12-11 | 友達光電股份有限公司 | Optical sensing module |
| WO2022183333A1 (en) * | 2021-03-01 | 2022-09-09 | 深圳市大疆创新科技有限公司 | Infrared image sensor, and infrared image processing method and apparatus |
| CN113191190B (en) * | 2021-03-22 | 2022-12-02 | 合肥维信诺科技有限公司 | Display panel and display device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10163462A (en) * | 1996-11-29 | 1998-06-19 | Sony Corp | Solid-state image sensing device of mass type filter structure and its manufacture |
| KR20070031352A (en) * | 2007-01-31 | 2007-03-19 | 삼성전자주식회사 | Image sensor and method of fabricating the same |
| CN102103685A (en) * | 2009-12-18 | 2011-06-22 | 茂晖科技股份有限公司 | Optical fingerprint identification device with living body scanning function and identification method |
| CN108140125A (en) * | 2015-09-15 | 2018-06-08 | 上海箩箕技术有限公司 | Optical finger print imaging system and area array sensor |
| CN109983471A (en) * | 2019-02-02 | 2019-07-05 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
| CN110164307A (en) * | 2019-05-23 | 2019-08-23 | 厦门天马微电子有限公司 | A kind of display device being built-in with fingerprint recognition inductor |
| CN110582780A (en) * | 2019-08-01 | 2019-12-17 | 深圳市汇顶科技股份有限公司 | Fingerprint identification and anti-counterfeiting method and device and electronic equipment |
| CN210091193U (en) * | 2018-12-13 | 2020-02-18 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
| CN210181627U (en) * | 2019-08-29 | 2020-03-24 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
-
2020
- 2020-04-10 CN CN202010283018.2A patent/CN111626100B/en active Active
- 2020-04-20 CN CN202020596785.4U patent/CN211857492U/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10163462A (en) * | 1996-11-29 | 1998-06-19 | Sony Corp | Solid-state image sensing device of mass type filter structure and its manufacture |
| KR20070031352A (en) * | 2007-01-31 | 2007-03-19 | 삼성전자주식회사 | Image sensor and method of fabricating the same |
| CN102103685A (en) * | 2009-12-18 | 2011-06-22 | 茂晖科技股份有限公司 | Optical fingerprint identification device with living body scanning function and identification method |
| CN108140125A (en) * | 2015-09-15 | 2018-06-08 | 上海箩箕技术有限公司 | Optical finger print imaging system and area array sensor |
| CN210091193U (en) * | 2018-12-13 | 2020-02-18 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
| CN109983471A (en) * | 2019-02-02 | 2019-07-05 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
| CN110164307A (en) * | 2019-05-23 | 2019-08-23 | 厦门天马微电子有限公司 | A kind of display device being built-in with fingerprint recognition inductor |
| CN110582780A (en) * | 2019-08-01 | 2019-12-17 | 深圳市汇顶科技股份有限公司 | Fingerprint identification and anti-counterfeiting method and device and electronic equipment |
| CN210181627U (en) * | 2019-08-29 | 2020-03-24 | 深圳市汇顶科技股份有限公司 | Fingerprint identification device and electronic equipment |
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