CN110781848B - Screen fingerprint identification device and electronic equipment - Google Patents
Screen fingerprint identification device and electronic equipment Download PDFInfo
- Publication number
- CN110781848B CN110781848B CN201911047959.XA CN201911047959A CN110781848B CN 110781848 B CN110781848 B CN 110781848B CN 201911047959 A CN201911047959 A CN 201911047959A CN 110781848 B CN110781848 B CN 110781848B
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- light
- opening
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/147—Details of sensors, e.g. sensor lenses
Abstract
The application provides a fingerprint recognition device and electronic equipment under a screen. Fingerprint recognition device comprises a plurality of light path units that are the array and arrange under the screen, and every light path unit includes: a first photoresist layer having a first opening and a second opening; the light guide plate is arranged on one side of the first light resistance layer, a convex surface area and a concave surface area are arranged on the surface close to the first light resistance layer, and the light guide plate is also provided with a first refraction surface and a second refraction surface; the photoelectric detection unit is arranged on one side, far away from the concave area, of the second opening; and the reflecting layer is arranged on one side of the light guide plate far away from the photoelectric detection unit. So, carry out once folding plastic to the light path through the reflection stratum, make fingerprint identification device's under the screen thickness thinner, light assembles the collimation effect that can realize the light path simultaneously, reduces the crosstalk between the light path unit, promotes fingerprint imaging's definition.
Description
Technical Field
The application relates to the technical field of fingerprint identification, in particular to a fingerprint identification device and electronic equipment under a screen.
Background
Existing off-screen optical fingerprint terminals, see fig. 14, generally consist of a terminal screen and an off-screen fingerprint sensor 10. The terminal screen is composed of a glass cover plate 30 and a display panel 20, and the under-screen fingerprint sensor 10 is composed of a module outer frame 710, an optical lens 730 and an image sensor 720. In this way, the light c emitted from the display panel 20 reaches the surface of the finger f through the glass cover 30, the intensity of the reflected light at the ridge of the finger is different due to the different reflectivity of the light at the ridge of the finger, the reflected light a reaches the image sensor 720 after passing through the optical lens 730, and the image sensor 720 receives the light with different intensity reflected by the surface of the finger f to form a fingerprint image. By the mode, the function of optical fingerprint identification under the screen can be realized.
However, because the optical lens 730 in the optical fingerprint module under the screen at the present stage needs to keep a certain object distance and image distance with the bottom end of the terminal screen and the top end of the image sensor 720 respectively, so as to meet the requirement of optical imaging, this results in that the bottom end of the optical fingerprint module under the screen 10 and the bottom end of the display screen 20 need to keep a larger distance L (about 3-6 mm), thereby making the dimension in the Z direction (refer to fig. 15, the Z direction is perpendicular to the outward direction of the terminal screen) of the existing optical fingerprint scheme under the screen larger, and further compressing the battery space of the terminal to cause the problems of reduced battery capacity and poor endurance of the terminal. Also, referring to fig. 16, the off-screen optical fingerprint scheme of the prior structural design also has a significant cross talk problem in the adjacent pixel cell 740.
Disclosure of Invention
An object of the embodiments of the present application is to provide an under-screen fingerprint identification apparatus with a thinner overall thickness and a smaller crosstalk problem and an electronic device including the under-screen fingerprint identification apparatus, so as to achieve a light and thin design and a better display effect.
In a first aspect of an embodiment of the present application, an apparatus for identifying fingerprints under a screen is provided.
According to the embodiment of the application, fingerprint recognition device comprises a plurality of light path units that are the array and arrange under the screen, every light path unit includes: a first photoresist layer having a first opening and a second opening; the light guide plate is arranged on one side of the first light resistance layer, a convex surface area and a concave surface area are arranged on the surface, close to the first light resistance layer, of the light guide plate, the light guide plate is further provided with a first refraction surface and a second refraction surface, the first refraction surface is arranged on one side, far away from the first light resistance layer, of the convex surface area, the second refraction surface is arranged on one side, far away from the first light resistance layer, of the concave surface area, the convex surface area and the first refraction surface are respectively opposite to the first opening hole, and the concave surface area and the second refraction surface are respectively opposite to the second opening hole; the photoelectric detection unit is arranged on one side, far away from the concave area, of the second opening and is opposite to the second opening; the reflector layer, the reflector layer sets up the light guide plate is kept away from one side of photoelectric detection unit, moreover, first refracting surface is close to the one end of second refracting surface arrives the distance of reflector layer is greater than first refracting surface is kept away from the one end of second refracting surface arrives the distance of reflector layer, second refracting surface is close to the one end of first refracting surface arrives the distance of reflector layer is greater than the second refracting surface is kept away from the one end of first refracting surface arrives the distance of reflector layer.
The fingerprint recognition device under the screen of this application embodiment carries out folding plastic once through the reflector layer to the light path, makes fingerprint recognition device's under the screen thickness more frivolous, and simultaneously, light assembles the collimation effect that still can realize the light path to reduce the crosstalk between the light path unit, and then promote the definition of fingerprint formation of image.
In a second aspect of the present application, an electronic device is presented.
According to an embodiment of the application, the electronic equipment comprises a display panel and the under-screen fingerprint identification device.
According to the electronic equipment, the thickness of the fingerprint identification device under the screen is thinner, and the fingerprint imaging definition is higher, so that the electronic equipment is thinner and the fingerprint identification function is more accurate. It will be appreciated by those skilled in the art that the features and advantages described above with respect to the underscreen fingerprint recognition apparatus are still applicable to the electronic device and will not be described in detail here.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic cross-sectional structure diagram of an optical path unit according to an embodiment of the present application;
fig. 2 is a schematic cross-sectional structure diagram of an optical path unit according to another embodiment of the present application;
FIG. 3 is a schematic diagram illustrating the principle of crosstalk prevention between adjacent optical path units according to another embodiment of the present application;
FIG. 4 is a schematic cross-sectional view of an underscreen fingerprint identification device according to another embodiment of the present application;
fig. 5 is a schematic cross-sectional structure diagram of an optical path unit according to another embodiment of the present application;
fig. 6 is a schematic cross-sectional structure diagram of an optical path unit according to another embodiment of the present application;
FIG. 7 is a schematic diagram of a front side structure of a photoelectric conversion array according to an embodiment of the present application;
FIG. 8 is a schematic diagram of the front side (a) and back side (b) structures of a first photoresist layer according to one embodiment of the present application;
FIG. 9 is a schematic structural diagram of a front surface (a) and a back surface (b) of a light guide plate according to an embodiment of the present application;
FIG. 10 is a schematic diagram of a front side structure of a second photoresist layer according to one embodiment of the present application;
FIG. 11 is a schematic front view of a reflective layer according to one embodiment of the present application;
FIG. 12 is a schematic external view of an electronic device according to an embodiment of the present application;
FIG. 13 is a schematic cross-sectional structural diagram of an electronic device of one embodiment of the present application;
FIG. 14 is a schematic diagram of an optical fingerprint scheme under a screen;
FIG. 15 is a schematic view of the Z-direction definition of the underscreen fingerprint recognition apparatus;
FIG. 16 is a far-out schematic of signal crosstalk between adjacent pixels of an underscreen optical fingerprinting scheme.
Reference numerals
100 photoelectric conversion array
110 photo-detection unit
111 pixel PD region
112 control circuit area
120 transparent substrate
200 first photoresist layer
201 first opening hole
202 second opening hole
203 light blocking ridge
300 light guide plate
301 convex surface region
302 concave region
303 first refractive surface
304 second refraction surface
310 first light guide plate
320 second light guide plate
330 third light guide plate
400 reflective layer
410 reflection area
420 absorption zone
500 second photoresist layer
501 second opening
600 third photoresist layer
601 third opening
710 module outer frame
720 image sensor
730 optical lens
740 pixel unit
10 fingerprint recognition device under screen
20 display panel
21 protective film
30 glass cover plate
1 electronic device
2 terminal screen
Detailed Description
The following examples are presented in detail and are not to be construed as limiting the present application, as those skilled in the art will appreciate. Unless otherwise indicated, specific techniques or conditions are not explicitly described in the following examples, and those skilled in the art may follow techniques or conditions commonly employed in the art or in accordance with the product specifications.
In one aspect of an embodiment of the present application, an apparatus for identifying fingerprints under a screen is provided.
According to an embodiment of the present application, referring to fig. 4, the underscreen fingerprint identification apparatus is composed of a plurality of optical path units a arranged in an array, referring to fig. 1, each of which includes a photodetection unit 110, a first photoresist layer 200, a light guide plate 300, and a reflective layer 400; wherein the first photoresist layer 200 has a first opening 201 and a second opening 202; the light guide plate 300 is disposed on one side of the first photoresist layer 200, and a convex area 301 and a concave area 302 are disposed on a surface of the light guide plate 300 close to the first photoresist layer 200, the light guide plate 300 further has a first refraction surface 303 and a second refraction surface 304, specifically, for example, a first refraction surface 303 and a second refraction surface 304 are disposed on a surface of the light guide plate 300 away from the first photoresist layer 200, and the convex area 301 and the first refraction surface 303 respectively face the first opening 201, and the concave area 302 and the second refraction surface 304 respectively face the second opening 202; the photodetecting unit 110 is disposed at a side of the second opening 202 away from the concave region 302, and the photodetecting unit 110 is opposite to the second opening 202; the reflective layer 400 is disposed on a side of the light guide plate 300 away from the photodetecting unit 110, and a distance from an end of the first refractive surface 303 close to the second refractive surface 304 to the reflective layer 400 is greater than a distance from an end of the first refractive surface 303 far from the second refractive surface 304 to the reflective layer 400, and a distance from an end of the second refractive surface 304 close to the first refractive surface 303 to the reflective layer 400 is greater than a distance from an end of the second refractive surface 304 far from the first refractive surface 303 to the reflective layer 400.
It should be noted that "directly opposite" in this document specifically means that the orthogonal projections partially overlap; the convex surface region 301 is opposite to the first opening 201, that is, the orthographic projection of the first opening 201 on the convex surface region 301 is partially overlapped with the convex surface region 301; the first refraction surface 303 is opposite to the first opening 201, that is, the orthographic projection of the first opening 201 on the first refraction surface 303 is partially overlapped with the first refraction surface 303; the concave area 302 is opposite to the second opening 202, i.e. the orthographic projection of the second opening 202 on the concave area 302 is partially overlapped with the concave area 302; the second refraction surface 304 is opposite to the second opening 202, that is, an orthographic projection of the second opening 202 on the second refraction surface 304 is partially overlapped with the second refraction surface 304; and the photo detection unit 110 is opposite to the second opening 202, i.e. the orthographic projection of the second opening 202 on the photo detection unit 110 is partially overlapped with the photo detection unit 110.
In the under-screen fingerprint identification device with the structural design, the fingerprint image is directly projected on the image sensor in an equal ratio through primary reflection to perform optical imaging, and a large-size optical lens is not needed, so that the whole size of the device is obviously smaller than that of the traditional structure, and the thickness is about 0.3-0.4 mm. Specifically, referring to fig. 1, the reflected light a with the fingerprint signal reaches the first photoresist layer 200, passes through the first opening 201, is converged by the convex region 301 (equivalent to a convex lens), is refracted at the first refraction surface 303, is reflected at the reflection layer 400, is refracted again at the second refraction surface 304 after being reflected, further converges by the concave region 304 (equivalent to a concave lens), passes through the second opening 202, reaches the photodetection unit 110, and is photoelectrically converted into an electrical signal to obtain a fingerprint image. So, first trompil 201 is as fingerprint signal sampling point, can realize the plastic that converges of reverberation a light path through the design of light guide plate 300 and reflection stratum 400, wherein, reflection stratum 400 carries out the Z of once folding light path and can reduce the device to the size, and convex surface district 301 and concave surface district 304 on the light guide plate 300, still can make the light energy of transmitting light a gather more, thereby realize the effect of collimation, and, first light resistance layer 200 can obstruct the light transmission of other positions, make the light path unit can only accept the light that is on a parallel with the convex lens optical axis and attenuate the light that other directions got into, the light crosstalk of penetrating between the light path unit has been reduced, thereby image quality has been promoted.
In some embodiments of the present application, referring to fig. 2, the reflective layer 400 may include a reflective region 410 and an absorptive region 420, and the absorptive region 420 is disposed around the reflective region 410. Thus, referring to fig. 3, only the light ray a collimated and incident into the first opening 201 will be reflected by the reflection region 410 and finally reach the photodetection unit 110, and the interference light rays b1 or b2 from other small angles will be absorbed by the absorption region 420 after being converged and shaped by the light guide plate, so as to reduce the interference of stray light and further improve the quality of the fingerprint image. In some specific examples, referring to fig. 11, the reflective region 410 may be square, and thus, the reflectance of collimated light may be made higher.
In some embodiments of the present application, a central axis of the first opening 201 may be aligned with a central axis of the convex region 301, and a central axis of the convex region 301, a center of the first refraction surface 303, a center of the reflection surface 410, a center of the second refraction surface 304, a central axis of the concave region 302, and a central axis of the second opening 202 may all be aligned, so that a range of a collimated light path may be more precisely defined, thereby further reducing crosstalk of light rays between light path units, and further improving fingerprint image quality.
In some embodiments of the present application, referring to fig. 2, the first photoresist layer 200 may further have a light blocking ridge 203, and the light blocking ridge 203 may be disposed on a surface of the first photoresist layer 200 near the light guide plate 300, and, referring to fig. 8 (b), the light blocking ridge 203 may be disposed around the second opening 202. As such, the light blocking ridge 203 may isolate the path of the incident light passing through the first opening 201 from the path of the exiting light passing through the second opening 202, thereby reducing interference between the incident light and the exiting light.
According to the embodiment of the present application, a specific cross-sectional shape of the opening on the first photoresist layer 200 may be selected by a person skilled in the art according to an actual arrangement manner of the plurality of optical path units on the fingerprint identification device under the screen, specifically, for example, a circle, a square, a diamond, or a hexagon. In some embodiments of the present application, referring to fig. 8, the first opening 201 and the second opening 202 may be circular holes, and the aperture of the first opening 201 is larger than that of the second opening 202, so that the energy density of the light path after the convex area 301 and the concave area 304 converge is more uniform.
According to the embodiment of the present application, the specific cross-sectional shapes of the convex area 301 and the concave area 302 on the light guide plate 300 may be selected by those skilled in the art according to the actual arrangement of the plurality of light path units on the underscreen fingerprint identification device, such as a circle, a square, a diamond, or a hexagon. In some embodiments of the present application, referring to fig. 9 (a), the convex region 301 and the concave region 302 may be both circular, so that the reflected light passing through the circular first opening 201 can be sequentially focused by the circular convex region 301 and the circular concave region 302 into a light path with more uniform energy density.
According to the embodiment of the present application, the specific cross-sectional shapes of the first refraction surface 303 and the second refraction surface 304 on the light guide plate 300 may be selected by those skilled in the art according to the actual arrangement of the plurality of light path units on the underscreen fingerprint identification device, and specifically, the cross-sectional shapes may be, for example, square or oval. In some embodiments of the present application, referring to fig. 9 (b), the first refractive surface 303 and the second refractive surface 304 may both be square, so that the converged or reflected light path may be refracted more uniformly at a predetermined angle.
In some embodiments of the present application, referring to fig. 7, the photo detection unit 110 may be a photodiode-type active pixel (PD-APS) structure, and may include a pixel PD region 111 and a control circuit region 112, wherein the pixel PD region 111 is used for performing photoelectric conversion, and the control circuit region 112 is used for preprocessing a PD signal of the pixel, so that, compared to a conventional CMOS image sensor, a photoelectric conversion array using a Thin Film Transistor (TFT) process is used to form an image sensor for imaging, which is lower in cost and more suitable for large-area applications, thereby realizing a large-area under-screen fingerprint identification device. Also, referring to fig. 7, the photo detection unit 110 may be fabricated on a transparent substrate 120, so that the photo conversion array 100 formed thereon, except for the plurality of photo detection units 110, may allow the reflected light with fingerprint information to pass therethrough.
According to the embodiment of the application, besides the first light resistance layer 200, another light resistance layer can be arranged in each light path unit, so that two light resistance layers are adopted in the under-screen fingerprint identification device to isolate the light path of a single pixel, crosstalk between adjacent pixels can be effectively reduced, and the image quality of the fingerprint image output by the under-screen fingerprint identification device can be further improved.
In some specific examples, referring to fig. 2, the light guide plate 300 may be a unitary body, i.e., a convex region 301 and a concave region 302 are formed on the upper surface of a glass plate having a flat surface, a first refractive surface 303 and a second refractive surface 304 are formed on the lower surface, and a second photoresist layer 500 having a second opening 501 may be disposed between the light guide plate 300 and the reflective layer 400. So, by five layers of range upon range of under-screen fingerprint identification device's that set up thickness can only be 0.3 ~ 0.4mm to, the light ridge that hinders of second photoresistance layer 500 can further keep apart each light path unit, prevents that light signal from crosstalking between the pixel, thereby further improves fingerprint image's imaging quality.
In other specific examples, referring to fig. 5, the light guide plate 300 may also include a first light guide plate 310 and a second light guide plate 320, wherein a convex region 301 and a concave region 302 are disposed on a surface of the first light guide plate 310 close to the first photoresist layer 200, and a first refraction surface 303 and a second refraction surface 304 are disposed on a surface of the second light guide plate 320 far from the first photoresist layer 200; also, a second photoresist layer 500 having a second opening 501 may be disposed between the second light guide plate 320 and the reflective layer 400. Thus, the convex area 301, the concave area 302, the first refraction surface 303 and the second refraction surface 304 are respectively manufactured on the first light guide plate 310 and the second light guide plate 320, so that two light guide plates can be conveniently manufactured at the same time and then assembled into a whole.
In other specific examples, referring to fig. 6, the light guide plate 300 may further include a first light guide plate 310 and a third light guide plate 330, wherein a convex region 301 and a concave region 302 are disposed on a surface of the first light blocking layer 310 close to the first photoresist layer 200, and a first refraction surface 303 and a second refraction surface 304 are disposed on a surface of the third light guide plate 330 close to the first light guide plate 310; also, a third photoresist layer 600 having a third opening 601 may be disposed between the first light guide plate 310 and the third light guide plate 330. Therefore, two light guide plates can be manufactured simultaneously, the first refraction surface 303 and the second refraction surface 304 are manufactured on the upper surface of the third light guide plate 330, the third light resistance layer 600 is arranged between the first light guide plate 310 and the third light guide plate 330, and the light resistance ridges of the third light resistance layer 600 can further isolate each light path unit, so that crosstalk of optical signals between pixels is prevented, and the imaging quality of fingerprint images is further improved.
According to the embodiment of the present application, the specific cross-sectional shape of the opening on the second photoresist layer 500 or the third photoresist layer 600 may be selected by those skilled in the art according to the actual arrangement manner of the plurality of optical path units on the underscreen fingerprint identification apparatus, such as a circle, a square, a diamond, or a hexagon. In some embodiments of the present application, referring to fig. 10, the second opening 501 on the second photoresist layer 500 may be square. In other embodiments of the present application, the third opening 601 in the third photoresist layer 600 may be square.
In summary, according to the embodiments of the present application, a fingerprint identification device under a screen is provided, in which an over-reflective layer folds and shapes a light path once, so that the thickness of the fingerprint identification device under the screen is thinner and lighter, and meanwhile, the light convergence can also achieve the collimation effect of the light path, thereby reducing crosstalk between light path units and further improving the definition of fingerprint imaging.
In one aspect of an embodiment of the present application, an electronic device is provided.
According to an embodiment of the present application, referring to fig. 12, an electronic device 1 includes a display panel 20 and the above-described under-screen fingerprint recognition apparatus 10. In some embodiments of the present application, referring to fig. 13, the electronic device 1 may further include a protective film disposed on a surface of the display panel 20 away from the underscreen fingerprint recognition device 10, so that the protective film may function to protect the display panel 20.
Specifically, the light emitted upward from the display panel 10 is reflected at the interface between the finger and the protective film, and since the refractive index of the finger is close to that of the protective film and the refractive index of air is much smaller than that of the protective film of the display screen, the reflected light at the valley of the fingerprint is strong, but the reflected light at the ridge of the fingerprint is weak, so that the downward reflected light can carry a fingerprint signal as a whole. Then, the reflected light passes through the display panel 10 and the light-transmitting area of the photoelectric conversion array to reach the first photoresist layer, and the first photoresist layer filters the reflected light, and blocks reflected light and stray light in other areas by the reflected light of the first opening. The reflected light passing through the first photoresist layer is subjected to first convergence and shaping through the light guide plate, then the light passes through the thickness of the light guide plate and is subjected to first reflection at the reflecting surface of the reflecting layer, and the reflected light passes through the light guide plate again to be subjected to second shaping and convergence. After twice convergence and shaping, the light passes through the second opening again to reach the photoelectric conversion unit of the TFT photoelectric conversion array for photoelectric conversion, so that a fingerprint image is finally obtained.
In summary, according to the embodiments of the present application, an electronic device is provided, in which a thickness of an under-screen fingerprint identification device is thinner and a fingerprint imaging definition is higher, so that the electronic device is thinner and a fingerprint identification function is more accurate. It will be appreciated by those skilled in the art that the features and advantages described above with respect to the device for identifying fingerprints under a screen are still applicable to the electronic device and will not be described in detail herein.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (13)
1. The utility model provides a fingerprint recognition device under screen which characterized in that fingerprint recognition device under screen comprises a plurality of light path units that are the array and arrange, every the light path unit includes:
a first photoresist layer having a first opening and a second opening;
the light guide plate is arranged on one side of the first light resistance layer, a convex area and a concave area are arranged on the surface, close to the first light resistance layer, of the light guide plate, a first refraction surface and a second refraction surface are arranged on the surface, far away from the first light resistance layer, of the light guide plate, the convex area and the first refraction surface are respectively opposite to the first opening, and the concave area and the second refraction surface are respectively opposite to the second opening;
the photoelectric detection unit is arranged on one side, far away from the concave area, of the second opening and is opposite to the second opening;
the reflector layer, the reflector layer sets up the light guide plate is kept away from one side of photoelectric detection unit, being close to of first refracting surface the one end of second refracting surface arrives the distance of reflector layer is greater than keeping away from of first refracting surface the one end of second refracting surface arrives the distance of reflector layer, being close to of second refracting surface the one end of first refracting surface arrives the distance of reflector layer is greater than keeping away from of second refracting surface the one end of first refracting surface arrives the distance of reflector layer.
2. The underscreen fingerprint identification device of claim 1, wherein the reflective layer comprises a reflective region and an absorptive region, the absorptive region disposed around the reflective region.
3. The device of claim 2, wherein the reflective area is square.
4. The underscreen fingerprint identification device of claim 1, wherein the first photoresist layer further comprises a light blocking ridge, and the light blocking ridge is disposed on a surface of the first photoresist layer adjacent to the light guide plate, and the light blocking ridge is disposed around the second opening.
5. The underscreen fingerprint identification device of claim 1 wherein the first aperture and the second aperture are both circular holes.
6. The underscreen fingerprint identification device of claim 1 wherein the first and second refraction surfaces are both square.
7. The underscreen fingerprint identification device of claim 1, wherein the light guide plate comprises:
the first light guide plate is arranged on one side, far away from the photoelectric detection unit, of the first light resistance layer, and the convex area and the concave area are arranged on the surface, close to the first light resistance layer, of the first light guide plate.
8. The underscreen fingerprint identification device of claim 7, wherein the light guide plate further comprises:
the second light guide plate is arranged on one side, away from the first light resistance layer, of the first light guide plate, and the surface, away from the first light resistance layer, of the second light guide plate is provided with the first refraction surface and the second refraction surface.
9. The underscreen fingerprint recognition apparatus according to claim 1 or 8, further comprising:
the second light resistance layer is arranged between the light guide plate and the reflecting layer and is provided with a second opening.
10. The underscreen fingerprint identification device of claim 7, wherein the light guide plate further comprises:
and the third light guide plate is arranged on one side, away from the first light resistance layer, of the first light guide plate, and the surface, close to the first light guide plate, of the third light guide plate is provided with the first refraction surface and the second refraction surface.
11. The device of claim 10, wherein a third photoresist layer is disposed between the first light guide plate and the third light guide plate, the third photoresist layer having a third opening.
12. The device according to claim 1, wherein the photo-detection unit is a photodiode type active pixel structure.
13. An electronic device comprising a display panel and the device for identifying fingerprints of any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911047959.XA CN110781848B (en) | 2019-10-30 | 2019-10-30 | Screen fingerprint identification device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911047959.XA CN110781848B (en) | 2019-10-30 | 2019-10-30 | Screen fingerprint identification device and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110781848A CN110781848A (en) | 2020-02-11 |
| CN110781848B true CN110781848B (en) | 2022-05-20 |
Family
ID=69387923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911047959.XA Active CN110781848B (en) | 2019-10-30 | 2019-10-30 | Screen fingerprint identification device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110781848B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021258299A1 (en) * | 2020-06-23 | 2021-12-30 | 深圳市汇顶科技股份有限公司 | Optical image acquisition apparatus and method, and electronic device |
| CN111524480B (en) * | 2020-07-03 | 2020-11-13 | 深圳市汇顶科技股份有限公司 | Under-screen optical device and detection method of display screen film |
| CN113883429A (en) * | 2021-09-26 | 2022-01-04 | 青岛易来智能科技股份有限公司 | Lamp box and lamp with same |
| CN115167067A (en) * | 2022-05-30 | 2022-10-11 | 歌尔股份有限公司 | Projection system and head-mounted device |
Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000113170A (en) * | 1998-10-02 | 2000-04-21 | Fuji Electric Co Ltd | Fingerprint image input device |
| KR20020016084A (en) * | 2000-08-24 | 2002-03-04 | 이종진 | Optical system for recognizing fingerprint |
| CN1652137A (en) * | 2004-02-05 | 2005-08-10 | 祥群科技股份有限公司 | Capacitance type pressure sensing element structure and mfg. method |
| CN101930323A (en) * | 2009-06-18 | 2010-12-29 | 安华高科技Ecbuip(新加坡)私人有限公司 | Optical finger print guider with light-guiding film |
| CN102646646A (en) * | 2011-02-18 | 2012-08-22 | 钰桥半导体股份有限公司 | Semiconductor chip assembly with post/Base/Post heat spreader and asymmetric posts |
| CN104269393A (en) * | 2014-09-15 | 2015-01-07 | 江苏长电科技股份有限公司 | Metal framework and electrostatic discharging ring integrated structure for fingerprint sensor and manufacturing method thereof |
| CN105184248A (en) * | 2015-08-28 | 2015-12-23 | 京东方科技集团股份有限公司 | Fingerprint identification device and fingerprint identification system |
| CN105844233A (en) * | 2016-03-21 | 2016-08-10 | 京东方科技集团股份有限公司 | Fingerprint identification module, fingerprint identification device and display device |
| CN106444994A (en) * | 2016-11-11 | 2017-02-22 | 厦门祐尼三的新材料科技有限公司 | 3D cover plate integrated with full screen fingerprint identification and preparation method thereof |
| WO2017075469A1 (en) * | 2015-10-30 | 2017-05-04 | Essential Products, Inc. | Fingerprint sensors for mobile devices |
| CN106933415A (en) * | 2017-03-07 | 2017-07-07 | 广东欧珀移动通信有限公司 | A kind of sensor cluster and terminal |
| CN107251046A (en) * | 2015-10-23 | 2017-10-13 | 深圳市汇顶科技股份有限公司 | Optical fingerprint sensor and encapsulation |
| CN107318219A (en) * | 2017-08-21 | 2017-11-03 | 广东欧珀移动通信有限公司 | Printed circuit board and electronic equipment |
| CN108021845A (en) * | 2016-10-31 | 2018-05-11 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| CN108291838A (en) * | 2015-12-03 | 2018-07-17 | 辛纳普蒂克斯公司 | Integrated optical sensor on display backpanel |
| CN108399392A (en) * | 2018-03-07 | 2018-08-14 | 京东方科技集团股份有限公司 | Fingerprint recognition structure and display device |
| CN108446677A (en) * | 2018-05-03 | 2018-08-24 | 东莞市美光达光学科技有限公司 | A kind of fingerprint recognition module for below screen |
| CN108764147A (en) * | 2018-05-29 | 2018-11-06 | 武汉天马微电子有限公司 | A kind of display panel and display device |
| CN208092769U (en) * | 2018-04-16 | 2018-11-13 | 江西立茂科技有限公司 | A kind of fingerprint recognition structure applied to smart card |
| CN108921005A (en) * | 2018-05-03 | 2018-11-30 | 武汉天马微电子有限公司 | Fingerprint recognition mould group and preparation method thereof, display panel and display device |
| CN109074492A (en) * | 2018-08-06 | 2018-12-21 | 深圳市汇顶科技股份有限公司 | Shield lower optical fingerprint identification device and electronic equipment |
| CN109145682A (en) * | 2017-06-16 | 2019-01-04 | 固安翌光科技有限公司 | A kind of optical fingerprint identification device and preparation method thereof |
| CN208985184U (en) * | 2018-08-24 | 2019-06-14 | 深圳市汇顶科技股份有限公司 | Backlight module shields lower fingerprint identification device and electronic equipment |
| CN110235143A (en) * | 2019-04-30 | 2019-09-13 | 深圳市汇顶科技股份有限公司 | Shield lower fingerprint identification device and electronic equipment |
| CN110309748A (en) * | 2019-06-23 | 2019-10-08 | 深圳阜时科技有限公司 | Biological characteristic detection system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10408613B2 (en) * | 2013-07-12 | 2019-09-10 | Magic Leap, Inc. | Method and system for rendering virtual content |
-
2019
- 2019-10-30 CN CN201911047959.XA patent/CN110781848B/en active Active
Patent Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000113170A (en) * | 1998-10-02 | 2000-04-21 | Fuji Electric Co Ltd | Fingerprint image input device |
| KR20020016084A (en) * | 2000-08-24 | 2002-03-04 | 이종진 | Optical system for recognizing fingerprint |
| CN1652137A (en) * | 2004-02-05 | 2005-08-10 | 祥群科技股份有限公司 | Capacitance type pressure sensing element structure and mfg. method |
| CN101930323A (en) * | 2009-06-18 | 2010-12-29 | 安华高科技Ecbuip(新加坡)私人有限公司 | Optical finger print guider with light-guiding film |
| CN102646646A (en) * | 2011-02-18 | 2012-08-22 | 钰桥半导体股份有限公司 | Semiconductor chip assembly with post/Base/Post heat spreader and asymmetric posts |
| CN104269393A (en) * | 2014-09-15 | 2015-01-07 | 江苏长电科技股份有限公司 | Metal framework and electrostatic discharging ring integrated structure for fingerprint sensor and manufacturing method thereof |
| CN105184248A (en) * | 2015-08-28 | 2015-12-23 | 京东方科技集团股份有限公司 | Fingerprint identification device and fingerprint identification system |
| CN107251046A (en) * | 2015-10-23 | 2017-10-13 | 深圳市汇顶科技股份有限公司 | Optical fingerprint sensor and encapsulation |
| WO2017075469A1 (en) * | 2015-10-30 | 2017-05-04 | Essential Products, Inc. | Fingerprint sensors for mobile devices |
| CN108291838A (en) * | 2015-12-03 | 2018-07-17 | 辛纳普蒂克斯公司 | Integrated optical sensor on display backpanel |
| CN105844233A (en) * | 2016-03-21 | 2016-08-10 | 京东方科技集团股份有限公司 | Fingerprint identification module, fingerprint identification device and display device |
| CN108021845A (en) * | 2016-10-31 | 2018-05-11 | 上海箩箕技术有限公司 | Optical fingerprint sensor module |
| CN106444994A (en) * | 2016-11-11 | 2017-02-22 | 厦门祐尼三的新材料科技有限公司 | 3D cover plate integrated with full screen fingerprint identification and preparation method thereof |
| CN106933415A (en) * | 2017-03-07 | 2017-07-07 | 广东欧珀移动通信有限公司 | A kind of sensor cluster and terminal |
| CN109145682A (en) * | 2017-06-16 | 2019-01-04 | 固安翌光科技有限公司 | A kind of optical fingerprint identification device and preparation method thereof |
| CN107318219A (en) * | 2017-08-21 | 2017-11-03 | 广东欧珀移动通信有限公司 | Printed circuit board and electronic equipment |
| CN108399392A (en) * | 2018-03-07 | 2018-08-14 | 京东方科技集团股份有限公司 | Fingerprint recognition structure and display device |
| CN208092769U (en) * | 2018-04-16 | 2018-11-13 | 江西立茂科技有限公司 | A kind of fingerprint recognition structure applied to smart card |
| CN108446677A (en) * | 2018-05-03 | 2018-08-24 | 东莞市美光达光学科技有限公司 | A kind of fingerprint recognition module for below screen |
| CN108921005A (en) * | 2018-05-03 | 2018-11-30 | 武汉天马微电子有限公司 | Fingerprint recognition mould group and preparation method thereof, display panel and display device |
| CN108764147A (en) * | 2018-05-29 | 2018-11-06 | 武汉天马微电子有限公司 | A kind of display panel and display device |
| CN109074492A (en) * | 2018-08-06 | 2018-12-21 | 深圳市汇顶科技股份有限公司 | Shield lower optical fingerprint identification device and electronic equipment |
| CN208985184U (en) * | 2018-08-24 | 2019-06-14 | 深圳市汇顶科技股份有限公司 | Backlight module shields lower fingerprint identification device and electronic equipment |
| CN110235143A (en) * | 2019-04-30 | 2019-09-13 | 深圳市汇顶科技股份有限公司 | Shield lower fingerprint identification device and electronic equipment |
| CN110309748A (en) * | 2019-06-23 | 2019-10-08 | 深圳阜时科技有限公司 | Biological characteristic detection system |
Non-Patent Citations (2)
| Title |
|---|
| Signatures of live fingers extracted from a series of fingerprint images;Fujieda I等;《Proceedings of SPIE - The International Society for Optical Engineering》;20051231;第177-185页 * |
| 基于图像质量评价的指纹指静脉采集一体化装置研究;吴阳阳;《中国优秀硕士学位论文全文数据库 信息科技辑》;20180415(第4期);第I138-2703页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110781848A (en) | 2020-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110781848B (en) | Screen fingerprint identification device and electronic equipment | |
| CN109863506B (en) | Fingerprint identification device and electronic equipment | |
| CN107065274B (en) | Array substrate, display panel and display device | |
| CN210052176U (en) | Fingerprint detection device and electronic equipment | |
| CN112889105B (en) | Light filling module, display screen, display device and terminal | |
| CN110720106B (en) | Fingerprint identification device and electronic equipment | |
| CN211087279U (en) | Optical fingerprint identification device and touch terminal | |
| WO2017118031A1 (en) | Optical fingerprint sensor module | |
| CN210295125U (en) | Fingerprint detection device and electronic equipment | |
| CN111095279B (en) | Fingerprint detection device and electronic equipment | |
| CN210109828U (en) | Fingerprint identification device and electronic equipment | |
| US11176348B2 (en) | Optical fingerprint apparatus and electronic device | |
| CN111095281B (en) | Fingerprint detection device and electronic equipment | |
| WO2017118030A1 (en) | Optical fingerprint sensor module | |
| CN211349375U (en) | Optical fingerprint device and electronic equipment | |
| CN110945527B (en) | Fingerprint identification device and electronic equipment | |
| CN210181627U (en) | Fingerprint identification device and electronic equipment | |
| CN210605741U (en) | Fingerprint detection device and electronic equipment | |
| CN210295124U (en) | Fingerprint detection device and electronic equipment | |
| CN213659463U (en) | Fingerprint identification device and electronic equipment | |
| CN112882279B (en) | Liquid crystal display panel and display device | |
| CN110796097B (en) | Optical fingerprint module under screen, display screen assembly and electronic equipment | |
| CN210155697U (en) | Prism membrane module and optical fingerprint identification device under screen | |
| CN110807374B (en) | Liquid crystal display panel | |
| CN111801688B (en) | Optical fingerprint device and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |