CN109948512B - Fingerprint identification device and display device - Google Patents
Fingerprint identification device and display device Download PDFInfo
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- CN109948512B CN109948512B CN201910196198.8A CN201910196198A CN109948512B CN 109948512 B CN109948512 B CN 109948512B CN 201910196198 A CN201910196198 A CN 201910196198A CN 109948512 B CN109948512 B CN 109948512B
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Abstract
The invention provides a fingerprint identification device and a display device. Fingerprint identification device includes base plate and fingerprint module, the laminating of fingerprint module is in the below of base plate, be equipped with the light shield layer on the base plate, the light shield layer is just right the position of fingerprint module is equipped with a plurality of through-holes, the base plate with the position that the through-hole is relative is equipped with the stay empty district, it has the printing opacity material to stay empty district intussuseption. The fingerprint identification device can effectively improve the light transmittance, enhance the definition of the fingerprint module for collecting images, and improve the speed and the accuracy of fingerprint identification.
Description
Technical Field
The invention relates to the technical field of display, in particular to a fingerprint identification device and a display device.
Background
A fingerprint is an inherent and distinguishable feature of the human body and is composed of a series of ridges and valleys on the surface of the finger tip skin, the composition details of which determine the uniqueness of the fingerprint pattern. The display panel with fingerprint recognition function developed by the method has been widely applied to various display devices to perform personal identity verification, thereby enhancing the use safety and convenience of the display device.
Among the prior art, fingerprint identification device includes the base plate and sets up the fingerprint module in the base plate below, and the top of base plate is equipped with the light shield layer, and the light shield layer is just being equipped with a plurality of through-holes to the position of fingerprint module, and when the finger pressed display panel, light transmitted the fingerprint module through this through-hole, and then realized the function of the discernment of fingerprint.
However, the substrate affects the transmittance of light, and thus the speed and accuracy of fingerprint recognition.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a fingerprint identification device and a display device.
An embodiment of the invention provides a fingerprint identification device, which comprises a substrate and a fingerprint module, wherein the fingerprint module is attached below the substrate, a light shielding layer is arranged on the substrate, a plurality of through holes are formed in the position, opposite to the fingerprint module, of the light shielding layer, a reserved area is formed in the position, opposite to the through holes, of the substrate, and a light-transmitting material is filled in the reserved area.
The fingerprint identification device provided by the embodiment of the invention has the advantages that the plurality of through holes are formed in the position, opposite to the fingerprint module, of the shading layer, the blank areas are formed in the positions, opposite to the through holes, of the substrate, the transparent materials are filled in the blank areas, compared with the prior art, the blank areas filled with the transparent materials enable the substrate to keep integrity, on the premise that the strength and the functions of the substrate are not influenced, the light transmittance of the blank areas filled with the transparent materials is obviously higher than that of the light of a common substrate, therefore, the transmittance of the light passing through the blank areas is greatly improved, the blank areas are opposite to the fingerprint module, the fingerprint module can collect more fingerprint light, the definition of the fingerprint module for collecting images is enhanced, and the speed and the accuracy of fingerprint identification are improved.
As above, optionally, the substrate includes a glass plate, a first flexible film layer, a first insulating layer, a second flexible film layer, and a second insulating layer, which are sequentially stacked, and at least one of the first flexible film layer, the first insulating layer, the second flexible film layer, and the second insulating layer is provided with the vacant area.
The glass plate is arranged below the substrate, so that parts directly attached to the fingerprint module are rigid parts, the impression generated when the fingerprint module is attached can be effectively reduced, and the attachment yield is improved; the specific setting of leaving empty area can improve the transmissivity that fingerprint light sees through the base plate on at least one in first flexible rete, first insulating layer, the flexible rete of second and the second insulating layer, and then improves the light that the fingerprint module was gathered for fingerprint identification's speed is faster, and the discernment is more accurate.
The fingerprint identification device as described above, optionally, the vacant areas include a first vacant area disposed on the first flexible film layer and a second vacant area disposed on the second flexible film layer; the first hollow area is filled with a first light-transmitting material, the second hollow area is filled with a second light-transmitting material, and the first light-transmitting material and the second light-transmitting material are the same or different.
The reserved area is arranged on the first flexible film layer and the second flexible film layer, so that the processing of the reserved area can be facilitated, and the manufacturing cost is reduced; through filling first printing opacity material and second printing opacity material in first dead zone and second dead zone respectively to can select filling respectively to first dead zone and second dead zone of the same or different printing opacity material according to actual need, thereby improved the optional scope of light transmittance, with select suitable light transmittance according to actual need, thereby reach the purpose that improves fingerprint identification's speed and precision.
Optionally, a first arc transition angle is arranged between the side wall of the first reserved area and the upper surface of the first flexible film layer; and a second arc transition angle is arranged between the side wall of the second reserved area and the upper surface of the second flexible film layer.
The first arc transition angle is arranged between the side wall of the first reserved area and the upper surface of the first flexible film layer, so that the risk of infirm bonding generated when the first light-transmitting material filled in the first reserved area is combined with the first flexible film layer can be reduced; set up second circular arc transition angle between the upper surface through keeping somewhere the district lateral wall at the second and the flexible rete of second to can reduce to fill and produce the not firm risk of bonding when the second printing opacity material in the second staying empty district combines with the flexible rete of second mutually.
Optionally, the reserved area sequentially penetrates through the first flexible film layer, the first insulating layer, the second flexible film layer and the second insulating layer.
The structure that wholly runs through first flexible rete, first insulating layer, the flexible rete of second and second insulating layer is set to the district that will keep somewhere, can simplify the manufacturing degree of difficulty of keeping somewhere the dead zone, reduction in production cost, and integral district that keeps somewhere also can further improve the transmittance that light sees through the base plate simultaneously, has strengthened the definition of fingerprint module collection image, improves fingerprint identification's speed and precision.
In the fingerprint identification device, optionally, a third arc transition angle is arranged between the side wall of the reserved area and the upper surface of the second insulating layer.
Set up third circular arc transition angle through between the upper surface at the district lateral wall of staying idle and second insulating layer to can reduce and fill the risk that produces the bonding insecure when the printing opacity material in the district of staying idle combines together with each rete.
According to the fingerprint identification device, optionally, in a direction perpendicular to the substrate, an orthographic projection of the reserved space is greater than or equal to an orthographic projection of the fingerprint module.
The orthographic projection that will leave the dead zone sets to the orthographic projection of more than or equal to fingerprint module to the assurance fingerprint light that can be abundant passes through, makes sufficient fingerprint light can be gathered to the fingerprint module, has guaranteed the definition that fingerprint module gathered the image.
The fingerprint identification device as described above, optionally, the shape of the reserved area is the same as or similar to the shape of the fingerprint module in the direction perpendicular to the substrate.
The whole shape looks adaptation of the whole shape that will leave the dead zone and fingerprint module to can guarantee that fingerprint light can not disperse to other regions, improve the definition of fingerprint module collection image.
The fingerprint identification device as described above, optionally, the light-transmissive material includes at least one of a polyimide material, a silicon oxide material, a high-temperature optical adhesive material, and an amorphous silicon material.
The light-transmitting material of this embodiment may be one or more of the above materials, and other suitable materials may be selected.
Another embodiment of the present invention provides a display device, which includes the fingerprint identification device as described above.
The display device provided by the invention comprises the fingerprint identification device in the technical scheme, so that the display device also has the advantages of the fingerprint identification device, and the advantages of the display device provided by the invention are not repeated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a fingerprint identification device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a fingerprint identification device according to another embodiment of the present invention;
fig. 3 is a schematic diagram of a fingerprint identification device according to another embodiment of the present invention.
Reference numerals:
100-a substrate;
101-leaving a vacant area;
1011-a first gob;
1012-second reserved area;
110-a glass plate;
120-a first flexible film layer;
130-a first insulating layer;
140-a second flexible film layer;
150-a second insulating layer;
200-fingerprint module;
300-a light-shielding layer;
310-a through hole;
400-a light transmissive material;
410-a first light transmissive material;
420-a second light transmissive material.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Example one
FIG. 1 is a schematic diagram of a fingerprint identification device according to an embodiment of the present invention; please refer to fig. 1. The embodiment provides a fingerprint identification device, including base plate 100 and fingerprint module 200, fingerprint module 200 laminates in the below of base plate 100, is equipped with light shield layer 300 on the base plate 100, and light shield layer 300 is equipped with a plurality of through-holes 310 just to fingerprint module 200's position, and base plate 100 is equipped with the stay empty district 101 with the relative position of through-hole 310, and the intussuseption of stay empty district 101 is filled with printing opacity material 400.
Specifically, the fingerprint identification device of this embodiment includes base plate 100 and fingerprint module 200, and fingerprint module 200 laminates in the below of base plate 100, specifically can adopt modes such as bonding to realize connecting, and what need understand is that fingerprint module 200 can directly laminate on base plate 100, also can be through the indirect laminating of other spare parts on base plate 100. The light shielding layer 300 is disposed above the substrate 100, the electrode layer and various functional film layers are disposed above the light shielding layer 300, and the substrate 100, the light shielding layer 300, the electrode layer and the functional film layers jointly form a display panel, thereby realizing a normal light emitting function. Light shield layer 300 is equipped with a plurality of through-holes 310 just to fingerprint module 200's position, and when user's finger pressed display panel, fingerprint module 200 gathered the light of finger fingerprint through this through-hole 310 to the identification of fingerprint has been realized.
Because fingerprint light will pass through base plate 100 in the route of transmitting to fingerprint module 200, and base plate 100 can block the passing through of some light to weaken the light that reachs fingerprint module 200 to a certain extent, influenced fingerprint module 200 and gathered the definition of image, reduced fingerprint identification's speed and precision.
For solving this problem, this application is equipped with in the relative position of base plate 100 and through-hole 310 and stays empty area 101, stays empty area 101 intussuseption and is filled with printing opacity material 400, and the transmission rate that the other positions on base plate 100 on the improvement fingerprint light that the filling has printing opacity material 400 of staying empty area 101 can be great to make fingerprint module 200 can gather more fingerprint light, strengthened the definition that fingerprint module 200 gathered the image, improve fingerprint identification's speed and precision.
In addition, after the empty space 101 is filled with the transparent material 400, the integrity of the entire substrate 100 can be maintained, so that the substrate 100 has sufficient strength and can still provide support for the upper layer film, thereby preventing failure caused by the empty space 101 arranged on the substrate 100.
Further, in the direction perpendicular to the substrate 100, the orthographic projection of the blank area 101 is greater than or equal to the orthographic projection of the fingerprint module 200.
The orthographic projection that will leave dead zone 101 sets to more than or equal to fingerprint module 200 orthographic projection to pass through of assurance fingerprint light that can be abundant, make fingerprint module 200 can gather sufficient fingerprint light, guaranteed fingerprint module 200 and gathered the definition of image.
Further, in a direction perpendicular to the substrate 100, the shape of the blank region 101 is the same as or similar to the shape of the fingerprint module 200.
With the whole shape looks adaptation of the whole shape of staying empty area 101 and fingerprint module 200 to can guarantee that fingerprint light can not disperse to other areas outside staying empty area 101, improve the definition that fingerprint module 200 gathered the image.
The shape of the blank area 101 and the shape of the fingerprint module 200 can be selected according to the requirement, for example, they can be selected to be circular, oval, rectangular, triangular, etc., which is not further limited in this embodiment.
Further, the light-transmitting material 400 in the present embodiment includes at least one of a polyimide material doped with transparent particles, a silicon oxide material, a high-temperature optical adhesive material, and an amorphous silicon material.
The light-transmitting material 400 of the present embodiment may be a mixture of one or more of the above materials, and other suitable materials may be selected.
Specifically, for example, the substrate 100 in the prior art is generally made of a polyimide material doped with yellow particles, and the yellow flexible film layer may seriously affect the passing of fingerprint light, thereby affecting the definition of the fingerprint module 200 for collecting images; consequently, set up on base plate 100 and leave empty region 101 to fill the polyimide material that dopes transparent particle in leaving empty region 101, make fingerprint light transmit to fingerprint module 200 behind the empty region 101 that leaves, thereby improved fingerprint light's transmissivity greatly, improved fingerprint identification's speed and precision. By adopting the scheme, the cost of the whole layer of the polyimide material doped with the transparent particles can be reduced on the premise of ensuring the light transmission effect.
The fingerprint identification device that this embodiment provided is equipped with the dead zone 101 through the relative position at base plate 100 and through-hole 310, and the dead zone 101 intussuseption is filled with printing opacity material 400, and the penetration rate that has the other positions on base plate 100 that the dead zone 101 of filling with printing opacity material 400 can be great improvement fingerprint light is compared to making fingerprint module 200 can gather more fingerprint light, has strengthened the definition that fingerprint module 200 gathered the image, improves fingerprint identification's speed and precision.
Example two
FIG. 2 is a schematic diagram of a fingerprint identification device according to another embodiment of the present invention; please refer to fig. 2. The embodiment provides a fingerprint identification device, including base plate 100 and fingerprint module 200, fingerprint module 200 laminates in the below of base plate 100, is equipped with light shield layer 300 on the base plate 100, and light shield layer 300 is equipped with a plurality of through-holes 310 just to fingerprint module 200's position, and base plate 100 is equipped with the stay empty district 101 with the relative position of through-hole 310, and the intussuseption of stay empty district 101 is filled with printing opacity material 400.
The substrate 100 includes a glass plate 110, a first flexible film layer 120, a first insulating layer 130, a second flexible film layer 140, and a second insulating layer 150, which are sequentially stacked, and at least one of the first flexible film layer 120, the first insulating layer 130, the second flexible film layer 140, and the second insulating layer 150 is provided with the empty space 101.
This embodiment sets up glass board 110 through the below at base plate 100 to make the part of direct and fingerprint module 200 laminating be the rigidity part, utilize the impression that produces when stiffness and the intensity of rigidity part self can the laminating of effectual reduction fingerprint module 200, improve the laminating yield.
In addition, to leave the empty area 101 and specifically set up and to improve the transmissivity that fingerprint light passed through base plate 100 on at least one in first flexible rete 120, first insulating layer 130, second flexible rete 140 and the second insulating layer 150, and then improve the light that fingerprint module 200 gathered for fingerprint identification's speed is faster, and the discernment is more accurate.
In an alternative embodiment, the open area 101 includes a first open area 1011 disposed on the first flexible film layer 120 and a second open area 1012 disposed on the second flexible film layer 140; the first hollow area 1011 is filled with a first light-transmitting material 410, the second hollow area 1012 is filled with a second light-transmitting material 420, and the first light-transmitting material 410 and the second light-transmitting material 420 may be the same or different.
In the embodiment, the reserved area 101 is arranged on the first flexible film layer 120 and the second flexible film layer 140, so that the processing of the reserved area 101 can be facilitated, and the manufacturing cost can be reduced. Through filling first printing opacity material 410 and second printing opacity material 420 in first empty area 1011 and second empty area 1012 are left separately to can select filling respectively to first empty area 1011 and second empty area 1012 of leaving of the printing opacity material the same or different according to actual need, thereby improve the optional scope of light transmittance, with select suitable light transmittance according to actual need, thereby reach the purpose that improves fingerprint identification's speed and precision.
Further, a first arc transition angle is arranged between the side wall of the first empty area 1011 and the upper surface of the first flexible film layer 120; a second arc transition angle is formed between the sidewall of the second empty space 1012 and the upper surface of the second flexible film layer 140.
By arranging the first arc transition angle between the side wall of the first reserved area 1011 and the upper surface of the first flexible film layer 120, the risk of poor adhesion generated when the first light-transmitting material 410 filled in the first reserved area 1011 is combined with the first flexible film layer 120 can be reduced; by arranging the second arc transition angle between the sidewall of the second empty area 1012 and the upper surface of the second flexible film layer 140, the risk of weak adhesion generated when the second light-transmitting material 420 filled in the second empty area 1012 is combined with the second flexible film layer 140 can be reduced.
Other features of this embodiment are as described in the above embodiment one, and are not described herein again.
A possible manufacturing method of the fingerprint identification device according to the present embodiment is described below by taking as an example that the first flexible film layer 120 and the second flexible film layer 140 are made of polyimide material doped with yellow particles:
the first step is as follows: attaching the fingerprint module 200 to one side of the glass plate 110, and preparing a first flexible film layer 120 on the other side of the glass plate 110;
a first vacant area 1011 is processed at a position of the first flexible film layer 120, which is opposite to the fingerprint module 200, and in order to ensure the hole opening precision of the first vacant area 1011, the laser cutting method can be adopted for processing;
performing arc transition treatment on a right angle between the side wall of the first vacant region 1011 and the upper surface of the first flexible film layer 120 to process a first arc transition angle;
the first empty area 1011 is filled with a first light-transmitting material 410, and specifically, the first light-transmitting material 410 may be filled into the first empty area 1011 by using a screen printing method.
The second step is that: a first insulating layer 130 is prepared on the prepared first flexible film layer 120 by a sputtering process.
The third step: the second flexible film layer 140 is processed on the prepared first insulating layer 130 by the above-mentioned first step, and a second empty area 1012, a second arc transition angle and a second light-transmitting material 420 are sequentially processed in the second empty area 1012.
The fourth step: and processing the second insulating layer 150 on the prepared second flexible film layer 140 by the above-mentioned second step.
The fifth step: a light-shielding layer 300 is formed on the second insulating layer 150, and a plurality of through holes 310 are formed in the light-shielding layer 300.
It should be noted that the above only provides one possible way to manufacture the fingerprint identification device, and those skilled in the art can modify the above method as required to obtain the required structure (for example, a reserved area is also provided on the first insulating layer 130 and the second insulating layer 150, etc.).
The fingerprint identification device that this embodiment provided can be great improvement fingerprint light's transmissivity to make fingerprint module 200 can gather more fingerprint light, strengthened the definition that fingerprint module 200 gathered the image, improve fingerprint identification's speed and precision.
EXAMPLE III
FIG. 3 is a schematic diagram of a fingerprint recognition device according to another embodiment of the present invention; please refer to fig. 3. The embodiment provides a fingerprint identification device, including base plate 100 and fingerprint module 200, fingerprint module 200 laminates in the below of base plate 100, is equipped with light shield layer 300 on the base plate 100, and light shield layer 300 is equipped with a plurality of through-holes 310 just to fingerprint module 200's position, and base plate 100 is equipped with the stay empty district 101 with the relative position of through-hole 310, and the intussuseption of stay empty district 101 is filled with printing opacity material 400.
The substrate 100 includes a glass plate 110, a first flexible film layer 120, a first insulating layer 130, a second flexible film layer 140, and a second insulating layer 150, which are sequentially stacked, and the empty region 101 sequentially penetrates through the first flexible film layer 120, the first insulating layer 130, the second flexible film layer 140, and the second insulating layer 150.
This embodiment will leave dead zone 101 and set to the whole structure that runs through first flexible rete 120, first insulating layer 130, flexible rete 140 of second and second insulating layer 150, can simplify the manufacturing degree of difficulty that leaves dead zone 101, reduction in production cost, integral the transmittance that leaves dead zone 101 also can further improve light and see through base plate 100 simultaneously, has strengthened the definition that fingerprint module 200 gathered the image, improves fingerprint identification's speed and precision.
Further, a third arc transition angle is formed between the sidewall of the empty space 101 and the upper surface of the second insulating layer 150.
Through set up third circular arc transition angle between the upper surface of leaving empty district 101 lateral wall and second insulating layer 150 to can reduce and fill the risk that produces the bonding insecure when the translucent material 400 of leaving empty district 101 and each rete combine together.
Other features of this embodiment are as described in the above first and second embodiments, and are not described herein again.
Example four
The present embodiment provides a display device, including the fingerprint identification device according to any one of the first to third embodiments.
The display device that this embodiment provided is because including any above-mentioned embodiment fingerprint identification device, consequently its transmissivity that also can improve light, the definition of reinforcing fingerprint module collection image improves fingerprint identification's speed and precision, and the here is no longer repeated the display device's that this embodiment provided advantage.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It should be noted that the terms "first" and "second" in the description of the present invention are used merely for convenience in describing different components, and are not to be construed as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A fingerprint identification device is characterized by comprising a substrate and a fingerprint module, wherein the fingerprint module is attached below the substrate, a light shielding layer is arranged on the substrate, a plurality of through holes are formed in the position, opposite to the fingerprint module, of the light shielding layer, a reserved area is arranged in the position, opposite to the through holes, of the substrate, and a light-transmitting material is filled in the reserved area;
the substrate comprises a glass plate, a first flexible film layer, a first insulating layer, a second flexible film layer and a second insulating layer which are sequentially stacked, the reserved area comprises a first reserved area arranged on the first flexible film layer and a second reserved area arranged on the second flexible film layer, a first light-transmitting material is filled in the first reserved area, a second light-transmitting material is filled in the second reserved area, and the first light-transmitting material and the second light-transmitting material are the same or different;
a first arc transition angle is arranged between the side wall of the first reserved area and the upper surface of the first flexible film layer; and a second arc transition angle is arranged between the side wall of the second reserved area and the upper surface of the second flexible film layer.
2. The fingerprint identification device of claim 1, wherein an orthographic projection of the keep-out area is equal to or greater than an orthographic projection of the fingerprint module in a direction perpendicular to the substrate.
3. The fingerprint identification device of claim 1, wherein the shape of the vacant areas is the same as or similar to the shape of the fingerprint module in a direction perpendicular to the substrate.
4. The fingerprint recognition device of claim 1, wherein the light transmissive material comprises at least one of a polyimide material, a silicon oxide material, a high temperature optical glue material, and an amorphous silicon material.
5. A fingerprint identification device is characterized by comprising a substrate and a fingerprint module, wherein the fingerprint module is attached below the substrate, a light shielding layer is arranged on the substrate, a plurality of through holes are formed in the position, opposite to the fingerprint module, of the light shielding layer, a reserved area is arranged in the position, opposite to the through holes, of the substrate, and a light-transmitting material is filled in the reserved area;
the base plate is including glass board, first flexible rete, first insulating layer, the flexible rete of second and the second insulating layer that stacks gradually the setting, it runs through in proper order to leave the dead zone first flexible rete, first insulating layer, the flexible rete of second and second insulating layer, the lateral wall of leaving the dead zone with be equipped with third circular arc transition angle between the upper surface of second insulating layer.
6. The fingerprint identification device of claim 5, wherein an orthographic projection of the keep-out area is equal to or greater than an orthographic projection of the fingerprint module in a direction perpendicular to the substrate.
7. The fingerprint identification device of claim 5, wherein the shape of the vacant areas is the same as or similar to the shape of the fingerprint module in a direction perpendicular to the substrate.
8. The fingerprint recognition device of claim 5, wherein the light transmissive material comprises at least one of a polyimide material, a silicon oxide material, a high temperature optical glue material, and an amorphous silicon material.
9. A display device comprising a fingerprint recognition device according to any one of claims 1 to 8.
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| CN201910196198.8A CN109948512B (en) | 2019-03-15 | 2019-03-15 | Fingerprint identification device and display device |
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| CN201910196198.8A CN109948512B (en) | 2019-03-15 | 2019-03-15 | Fingerprint identification device and display device |
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| US11600095B2 (en) * | 2019-10-25 | 2023-03-07 | Visera Technologies Company Limited | Optical fingerprint sensors |
| CN114023184A (en) * | 2021-10-18 | 2022-02-08 | 业成科技（成都）有限公司 | Display screen, display screen manufacturing method and electronic equipment |
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