Method for detecting biometric features using display

Abstract

The present disclosure discloses a method for detecting biometrics using a display, and the method includes the following steps: First, a detection area is provided on an electronic device, and the electronic device includes a plurality of first sensing units and a plurality of second sensing units. Next, a first scanning light is generated in the detection area, and the first scanning light is sensed by the plurality of first sensing units. Then, a second scanning light is generated in the detection area, and the second scanning light is sensed by the plurality of second sensing units. Finally, a biometric is determined.

Description

Technical Field

[0001] The present disclosure relates to a method for detecting biometrics, and more particularly to a method for detecting biometrics using an optical sensor. Background Art

[0002] Generally speaking, biometric features such as fingerprints or retinas can be used for personal identification. Therefore, with the development of electronic devices, biometric features are also integrated into various electronic devices and widely used. Taking display devices (such as smart phones) as an example, users can directly control electronic devices through biometric features without entering passwords. Therefore, there is still an urgent need to improve the biometric features in electronic devices to provide better convenience or security. Summary of the invention

[0003] The present disclosure provides a method for detecting biometrics with a display, wherein the display has a plurality of first color pixels and a plurality of second color pixels, and the method comprises the following steps: first, a detection area of ​​the display is provided, wherein the display comprises a plurality of first sensing units and a plurality of second sensing units, and the first sensing units and the second sensing units are used to sense different color lights. Next, at least a portion of the plurality of first color pixels in the detection area are sequentially turned on to generate a first color scanning light, and at least a portion of the plurality of second color pixels in the detection area are sequentially turned on to generate a second color scanning light. Then, the first color scanning light is sensed by the plurality of first sensing units, and the second color scanning light is sensed by the plurality of second sensing units. Finally, a biometric is determined.

[0004] The present disclosure provides a method for detecting biometrics using a display, wherein the display has a plurality of pixels, and the method comprises the following steps: first, a detection area of ​​the display is provided, and the display comprises a plurality of sensing units. Next, at least a portion of the plurality of pixels in the detection area is sequentially turned on to generate a scanning light. Then, the scanning light is sensed by the sensing unit, and a signal is generated by the sensing unit. Finally, the signal is compressed, and a biometric is determined by calculating the compressed signal.

[0005] The present disclosure provides a method for detecting biometrics using an electronic device, the method comprising the following steps: first, providing a detection area on the electronic device, the electronic device comprising a plurality of first sensing units and a plurality of second sensing units. Next, generating a first scanning light in the detection area, and sensing the first scanning light through the plurality of first sensing units. Then, generating a second scanning light in the detection area, and sensing the second scanning light through the plurality of second sensing units. Finally, determining a biometric. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The above and other objects of the present disclosure will undoubtedly become apparent to those skilled in the art after reading the following detailed description of the embodiments illustrated in the various figures and drawings.

[0007] Figures 1 to 7 This is a schematic diagram of a method for detecting biometrics using an electronic device according to a first embodiment of the present disclosure, wherein:

[0008] Figure 1 A top view of an electronic device is shown;

[0009] Figure 2 Show Figure 1 A cross-sectional view taken along the tangent line A-A';

[0010] Figure 3 Show Figure 2 A partial enlarged view of

[0011] Figure 4 Show Figure 2 Enlarged view of the dashed box E;

[0012] Figure 5 The data scanning steps of the electronic device are shown;

[0013] Figure 6 Another data scanning step of the electronic device is shown; and

[0014] Figure 7 The data recording steps of the electronic device are shown.

[0015] Figure 8 A schematic diagram of a method for detecting biometrics using an electronic device according to a second embodiment of the present disclosure.

[0016] Figures 9 to 13 This is a schematic diagram of a method for detecting biometrics using an electronic device according to a third embodiment of the present disclosure, wherein:

[0017] Fig. 9 An optical sensor of an electronic device is shown;

[0018] Fig.10 The data scanning steps of the electronic device are shown;

[0019] Fig.11 The arrangement of scanning lights of different colors is shown;

[0020] Fig.12 Another arrangement of scanning lights of different colors is shown;

[0021] Fig.13 Another data scanning step of the electronic device is shown.

[0022] Explanation of reference numerals: 100-electronic device; 101-display area; 110-detection area; 110a, 110b, 110c, 110d-scanning block; 120-protective layer; 125-adhesive layer; 130-first polarizing layer; 140-first substrate; 150-display layer; 153D-data line; 153G-gate line; 153V-power line; 155B-blue (sub) pixel; 155G-green (sub) pixel; 155P-pixel; 155R-red (sub) pixel; 157, 157B, 157G-sensing unit; 160-second substrate; 170-second polarizing layer; 180-backlight source; 185-gap; 190-finger; 191-valley; 193-ridge; 301, 301a, 301b, 301c, 301 d, 301-1, 301-2, 301-3, 301-4, 301-5, 301-6, 301-7, 301-8, 301-9, 301-10, 301-11, 301-12, 301-63, 301-64-scanning positions; 355, 355B, 355G-light spots; 357, 357a, 357b, 357c, 357d , 357aG, 359dG, 357bB, 357cB-sensing area; 359, 359a, 359b, 359c, 359d, 359aG, 359dG, 359bB, 359cB, 359G, 359B-target area; 457, 459-data matrix format; D1, D2, D3-direction; R1, R2-distance; θc-critical angle. DETAILED DESCRIPTION

[0023] By referring to the detailed description below and in conjunction with the accompanying drawings, those skilled in the art can understand the content of the present invention. For the sake of simplicity and ease of understanding by readers, each of the drawings in the present disclosure only shows a portion of the electronic device, and some elements in each of the drawings are not drawn according to the actual scale. In addition, the number and size of each element shown in the drawings are only for illustration and are not intended to limit the scope of the present disclosure.

[0024] Certain words are used throughout the specification and claims of this disclosure to refer to specific components. Those skilled in the art will understand that electronic device manufacturers may refer to the same components by different names. In the following specification and claims, the words "including", "comprising", and "having" are open-ended words and should be interpreted as "including but not limited to..."

[0025] Here, the terms "about", "approximately", and "substantially" generally mean within 20%, within 10%, within 5%, within 3%, within 2%, within 1%, or within 0.5% of a given value or range. The quantities given here are approximate quantities, that is, in the absence of specific description of "about", "approximately", and "substantially", the meanings of "about", "approximately", and "substantially" can still be implied.

[0026] When an element or film layer is referred to as being "on" or "connected to" another element or film layer, it may be directly on or directly connected to the other element or film layer, or there may be intervening elements or film layers between the two. Conversely, when an element is referred to as being "directly on" or "directly connected to" another element or film layer, there may be no intervening elements or film layers between the two.

[0027] Although terms such as first, second, third, etc. may be used to describe various components, these components are not limited by these terms. These terms are only used to distinguish a component from other components in the specification. The claims may not use the same terms, but instead use the terms first, second, third, etc. in relation to the order of the elements requested. Therefore, in the following, the first component may be the second component in the claims.

[0028] Without departing from the spirit of the present disclosure, the technical features in the several different embodiments described below may be replaced, reorganized, or mixed to implement other embodiments.

[0029] Figures 1 to 7 Schematic diagram of a method for detecting biometrics using an electronic device according to a first embodiment of the present disclosure, wherein Figure 1 1 shows a top view of the electronic device 100. Figure 2 Show Figure 1 A cross-sectional view of the electronic device 100 taken along the tangent line AA' in FIG. Figure 1 In the figure, directions D1, D2, and D3 are exemplarily illustrated to show three different directions perpendicular to each other, such as the y direction, the x direction, and the z direction, but not limited thereto. Figure 1 As shown, a detection area 110 is provided on the electronic device 100. The detection area 110 can be set at any suitable position, such as in the display area or the non-display area. For example, the detection area 110 can be embedded in the home button (not shown in the figure) of the electronic device 100 or set on the back side of the electronic device 100, but it is not limited thereto. In this embodiment, although the detection area 110 is shown as Figure 1The circular shape shown in the figure, but the actual detection area in the present disclosure is not limited thereto, and can cover the entire display area or include any suitable shape, area, or can also include multiple areas.

[0030] In this embodiment, the electronic device 100 is exemplified as a display device (or display), and includes a display area 101, and the detection area 110 is, for example, embedded in the display area 101. Figure 2 As shown, the display device may further include a protective layer 120, a first polarizing layer 130, a first substrate 140, a display layer 150, a second substrate 160, a second polarizing layer 170 and a backlight source 180 arranged in order from top to bottom in direction D3. In one embodiment, an adhesive layer 125 is further disposed between the protective layer 120 and the first polarizing layer 130 to attach the protective layer 120 to the first polarizing layer 130 and the first substrate 140. The protective layer 120 may include a protective material (such as a glass cover) or include a polymer film layer, but is not limited thereto, and the protective layer 120 may also be omitted in another embodiment. In one embodiment, a gap 185 may also be disposed between the backlight source 180 and the second polarizing layer 170 to separate the backlight source 180 from the second polarizing layer 170, such as Figure 2 As shown, but not limited to this. The backlight source 180 may include a self-luminous module, such as an element including an organic light emitting diode (OLEDs) or an inorganic light emitting diode (LED), and the inorganic light emitting diode may be a microLED (microLED), a sub-millimeter LED (mini LED) or a quantum dot LED (quantum dot LED, QLED / QDLED), but not limited to this. In some embodiments, the backlight source 180 may also include one or more cold cathode fluorescent lamps (cold cathode fluorescentlamp), fluorescence, phosphorescence, quantum dots (QD), other suitable materials or any combination thereof.

[0031] On the other hand, the display layer 150 may include a non-self-luminous layer or a self-luminous layer (not shown in the drawings), such as an organic light-emitting diode or an inorganic light-emitting diode, and the inorganic light-emitting diode may include a micro-LED, a sub-millimeter LED or a quantum dot LED, but is not limited thereto. In one embodiment, if the display layer 150 includes a self-luminous layer, the backlight source 180 and the second polarizing layer 170 and / or the first polarizing layer 130 may be omitted. Figure 2The display layer 150 is illustrated as a single layer, but the display layer 150 may also include a multi-layer structure, for example, it may also include a display circuit layer (not shown in the drawings) having a plurality of metal lines and switching elements, or include a display medium layer (not shown in the drawings), such as a liquid crystal layer, or include a color filter (not shown in the drawings) or a sensing layer.

[0032] like Figure 3 As shown, the display layer 150 of the electronic device 100 may further include a plurality of pixels 155P, wherein the pixel 155P is the minimum repeating unit of the display medium layer. Then, a plurality of power lines 153V may be provided to selectively extend along the first direction D1 or the second direction D2, wherein the power lines 153V of this embodiment are exemplarily extended along the second direction D2, as shown in FIG. Figure 3 As shown. The display layer 150 also includes a plurality of switching elements, such as thin film transistors (TFTs, not shown in the drawings), for controlling each pixel 155P and processing signals from the pixel 155P. In addition, the display layer 150 of the present embodiment may also include a color filter disposed on each pixel 155P, whereby each pixel 155P may include (sub) pixels of different colors, such as red (sub) pixels 155R, green (sub) pixels 155G, and blue (sub) pixels 155B, but not limited thereto. In another embodiment, each pixel 155P may also include quantum dot (QD) materials, fluorescent materials, phosphorescent materials, dyes or pigments of different colors to present (sub) pixels of different colors, but not limited thereto.

[0033] It should be noted that the display layer 150 of the electronic device 100 may further include a sensing layer disposed on a portion of the power line 153V, the sensing layer having a plurality of sensing units 157, such as photosensors. In another embodiment, the sensing units may be integrated into the display circuit layer, such as formed by switching elements. In this embodiment, each sensing unit 157 may be disposed corresponding to each pixel 155P, such as Figure 3 to Figure 4 As shown, the sensing unit 157 is used to sense signals from each pixel 155P, but is not limited thereto. The sensing unit 157 can also be used to sense reflected scanning light when detecting biometric features (eg, fingerprints of fingers touching the detection area 110).

[0034] like Figure 2 As shown, when a user (not shown in the drawings) places a biometric feature (e.g., finger 190) on the detection area 110, by turning on at least one corresponding (sub) pixel 155R, (sub) pixel 155G, (sub) pixel 155B, a scanning light can be generated from a light spot 355 of the electronic device 100, such as Figure 4As shown in the enlarged view within the dotted frame E in FIG. Figure 4 As shown, the light spot 355 may correspond to a portion of a plurality of pixels 155P (each pixel 155P may include three sub-pixels (sub-pixel 155R, sub-pixel 155G, sub-pixel 155B)), and the scanning light provided by the light spot 355 may be generated by turning on one or more corresponding (sub) pixels. In one embodiment, each sub-pixel 155R, sub-pixel 155G, and sub-pixel 155B may be defined by a plurality of data lines 153D extending along a first direction D1 and a plurality of gate lines 153G extending along a second direction D2 intersecting the data lines 153D, but is not limited thereto. Furthermore, in another embodiment, the light spot 355 of the electronic device 100 may also be provided by at least one self-luminous module (such as an OLED or an inorganic light-emitting diode), but is not limited thereto.

[0035] In this embodiment, the corresponding (sub) pixel can be a (sub) pixel of any color, such as a red (sub) pixel 155R, a green (sub) pixel 155G or a blue (sub) pixel 155B. Figure 2 As shown, the finger 190 reflects the scanning light of the light spot 355. At a critical angle θc (e.g., θc=42 degrees) or an angle greater than the critical angle θc, the scanning light of the light spot 355 may be totally reflected at the valley 191 of the finger 190, where the refractive index of air is approximately 1.0 (n0=1.0) and the refractive index of the protective layer 120 (e.g., glass) is approximately 1.5 (n1=1.5). The critical angle θc is not limited to 42 degrees, and it may vary according to various refractive indices. On the other hand, the scanning light of the light spot 355 reflected at the ridge 193 of the finger 190 may have a diffuse reflection signal. In this way, the scanning light of the light spot 355 reflected by the total reflection (valley=bright, ridge=dark) on the sensing unit 157 (shown in Figure 3 ) to obtain a clear fingerprint image with higher resolution or higher contrast ratio (CR).

[0036] In this embodiment, the scanning light of the light spot 355 is sensed by the sensing unit 157 as a sensing area 357 after total reflection. Figure 2 and Figure 4As shown. Then, the distance "R1" between the target area 359 (i.e., the actual position of the valley 191) and the light spot 355 can be calculated by the following formula, so as to obtain and record the position of the target area 359. Those skilled in the art should fully understand that although the target area 359 and the sensing area 357 are both drawn as rings or quasi-rings, their actual implementation is not limited to this. Formula: R1 = T × {sinθc / cosθc}; R2 = 2 × R1 (R1: the distance between the light spot 355 and the target area 359; R2: the distance between the light spot 355 and the sensing area 357; T: the thickness between the top surface of the protective layer 120 and the top surface of the display layer 150).

[0037] It is worth noting that when detecting a portion of the fingerprint of the entire finger 190 on the detection area 110, a scanning step is first performed by sequentially turning on the plurality of light spots 355, wherein the scanning light generated by each light spot 355 may have any suitable color, such as red, blue or green, but not limited thereto. Figure 5 As shown, the detection area 110 can be divided into a plurality of scanning blocks 110a, 110b, 110c, and 110d, and each scanning block 110a, 110b, 110c, and 110d can have any possible size according to the required resolution of the fingerprint image. Figure 5 The number and size of the scanning blocks 110a, 110b, 110c, and 110d shown in the figure are for illustration only. In other embodiments, the number and size may be further modified according to actual needs. Next, each scanning block 110a, 110b, 110c, and 110d may be further divided into an x×y matrix to define a plurality of light scanning positions (i.e., the positions of the light spots 355) for providing scanning light, wherein x and y may be any constants greater than zero, and x may be selectively equal to or different from y. For example, if the scanning block 110a is divided into the following: Figure 5 The 8×8 matrix shown in FIG. 1 can generate 64 scanning positions 301a and 301b, for example, at the lower left corner of each square block of the 8×8 matrix (in Figure 5 In another embodiment, the scanning block may be divided into a 7×7 matrix, a 6×6 matrix or a 5×5 matrix according to the required resolution of the fingerprint image, and each scanning position of the matrix may also be set at any other corner of each square block.

[0038] like Figure 5As shown, the light spot 355 is sequentially turned on from the first scanning position 301a, the first scanning position 301b, the first scanning position 301c, the first scanning position 301d of each scanning block 110a, the scanning block 110b, the scanning block 110c, and the scanning block 110d to the sixty-fourth scanning position 301 of each scanning block 110a, the scanning block 110b, the scanning block 110c, and the scanning block 110d. Figure 5 , only the 64 scanning positions 301a and scanning position 301 in the scanning block 110a, as well as the first scanning position 301b of the scanning block 110b, the first scanning position 301c of the scanning block 110c, and the first scanning position 301d of the scanning block 110d are drawn as black dots, while the scanning positions that currently provide the light spots 355 (e.g., the first scanning position 301a of the scanning block 110a, the first scanning position 301b of the scanning block 110b, the first scanning position 301c of the scanning block 110c, and the first scanning position 301d of the scanning block 110d) are drawn as solid black dots, and the scanning positions that currently do not provide the light spots 355 (e.g., the second scanning position 301, the third scanning position 301 ... to the sixty-fourth scanning position 301 of the scanning block 110a) are drawn as hollow black dots. Furthermore, all scanning lights generated from the first scanning position 301a, the first scanning position 301b, the first scanning position 301c, and the first scanning position 301d of each scanning block 110a, the scanning block 110b, the scanning block 110c, and the scanning block 110d are of the same color, but the present invention is not limited thereto.

[0039] In this embodiment, first, at the same time, the light spot 355 is provided from the first scanning position 301a, the first scanning position 301b, the first scanning position 301c, and the first scanning position 301d of each scanning block 110a, the scanning block 110b, the scanning block 110c, and the scanning block 110d to generate corresponding sensing areas 357a, the sensing area 357b, the sensing area 357c, and the sensing area 357d (such as Figure 3 to Figure 4As shown), and then the corresponding target areas 359a, 359b, 359c and 359d are generated. It should be noted that the "same time" referred to here and below means a time interval or a time point, such as seconds, minutes, hours, etc., but is not limited to this. And "at the same time" means within the same time interval, or at the same time point, including the meaning of the time point. After obtaining the signals of the sensing areas 357a, 357b, 357c and 357d and the target areas 359a, 359b, 359c and 359d, a light spot 355 is provided from each second scanning position 301 of each scanning block 110a, 110b, 110c and 110d (at Figure 5 (the scanning light from the second scanning position 301 is not shown in the figure) to obtain a corresponding signal, and then, the light spot 355 is sequentially provided from the third scanning position 301 of each scanning block 110a, scanning block 110b, scanning block 110c, scanning block 110d ... to the sixty-fourth scanning position 301. However, in another embodiment, the light spot 355 can also be turned on in a different order, for example, from the sixty-fourth scanning position 301 of each scanning block 110a, scanning block 110b, scanning block 110c, scanning block 110d to the first scanning position 301a, the first scanning position 301b, the first scanning position 301c, the first scanning position 301d of each scanning block 110a, scanning block 110b, scanning block 110c, scanning block 110d, but it is not limited thereto.

[0040] It should be noted that at the same time, the sensing areas 357a, 357b, 357c, and 357d generated from the first scanning position 301a, 301b, 301c, and 301d of each scanning block 110a, 110b, 110c, and 110d may not overlap with each other, so that the scanning data of each scanning light (i.e., each light spot 355) emitted from the scanning positions 301 in a specific order in different scanning blocks 110a, 110b, 110c, and 110d can be clearly identified. It should also be noted that all target areas 359 generated by all scanning positions 301 in a scanning block (e.g., scanning block 110a) can cover the entire area of ​​the scanning block, so as to identify all features or patterns of the finger 190 pressed on the scanning block (e.g., scanning block 110a).

[0041] In such Figure 6In some cases shown, if the sensing area 357 ( Figure 6 If the light spots 355 of the adjacent scanning positions 301 in the same scanning block are partially overlapped, it is possible to select to only partially open the light spots 355 for light scanning. Figure 6 In the figure, the scanning positions predetermined to provide the light spots 355 (e.g., the first scanning position 301-1, the third scanning position 301-3, and the sixty-fourth scanning position 301-64) are depicted as solid black dots, while the scanning positions not predetermined to provide the light spots 355 (e.g., the second scanning position 301-2, the fourth scanning position 301-4, and the sixty-third scanning position 301-63) are depicted as hollow black dots. Therefore, the light spots 355 of a portion of the scanning positions (e.g., the second scanning position 301-2) may be selectively turned off, and the total number of the light spots 355 turned on in the scanning block 110a may be reduced, for example, from 64 light spots 355 to 32 light spots 355 (the light spots 355 at the first, third, fifth, seventh, tenth, twelfth, fourteenth, sixteenth, seventeenth, nineteenth, twenty-first, twenty-third, twenty-sixth, twenty-eighth, thirtieth, thirty-second, thirty-third, thirty-fifth, thirty-seventh, thirty-ninth, forty-second, forty-second, forty-fourth, forty-sixth, forty-eighth, forty-ninth, fifty-first, fifty-third, fifty-fifth, fifty-eighth, sixtieth, sixty-second, and sixty-fourth scanning positions 301, respectively), to generate corresponding target areas 359 and sensing areas 357 ( Figure 6 Under this setting, the scanning interval between the light spots 355 can be increased, and the scanning time can be substantially saved.

[0042] However, it should be noted that even if the number of light spots 355 turned on in the same scanning block (e.g., scanning block 100a) is reduced, the target area 359 generated by all the light spots 355 from the remaining scanning positions 301 must still cover the entire area of ​​scanning block 110a, such as Figure 6 As shown, all features and patterns within the scanning block 110a are ensured to be recognized. In another embodiment, the total number of light spots 355 within the same scanning block (e.g., scanning block 100a) may not be reduced by half (e.g., from 64 to 32), but a smaller or larger number of light spots 355 may be selectively turned on or off between any adjacent scanning positions 301 according to the required resolution of the fingerprint image.

[0043] Then, the recording step is performed by recording the light scanning data obtained from each light spot 355. In detail, Figure 7 As shown, in the sensing unit 157 ( Figure 7 After obtaining the sensing area 357 on the sensing unit 157 (not shown), the sensing unit 157 can generate a corresponding signal according to the sensing area 357. In this embodiment, referring to the above formula ("R2" = 2 × "R1"), the diameter of each sensing area 357 (i.e. Figure 2 The distance R2 shown in FIG. 1 is approximately the diameter of the target area 359 (i.e., Figure 2 The corresponding signal of the sensing area 357 can be directly output as a data matrix format 457. For example, the data quantity or data area of ​​the target area 359 can be displayed as Figure 7 The left matrix in the left matrix, wherein each thick line frame of the left matrix represents each data area, and each thin line frame of the left matrix represents each data quantity. And, the data quantity or data area of ​​the sensing area 357 can be displayed as Figure 7 The right matrix in the right matrix, wherein each thick line frame of the right matrix represents each data area, and each thin line frame of the right matrix represents each data quantity. As an example, each data of the left matrix (i.e., the data represented by each thin line frame) can represent each pixel 155P ( Figure 7 ), and each data of the right matrix (i.e., data represented by each thin frame line) can represent the signal obtained by two pixels 155P in one direction (e.g., direction D1 or direction D2), and the signal of the right matrix is ​​about twice the signal of the left matrix. Therefore, through these records, when the data matrix format 457 is directly recorded from the sensing area 357, a larger amount or a larger area of ​​data can be recorded to determine the fingerprint image, thereby improving the quality of the fingerprint image. In addition, through these records, the data of the sensing area 357 can be directly recorded without first calculating the target area through the aforementioned formula, thereby saving recording time.

[0044] In summary, according to the method of detecting biometric features by using the electronic device 100 in this embodiment, the light spot 355 located at a scanning position 301 in each of the plurality of scanning blocks 110a, 110b, 110c, and 110d is first turned on to generate scanning light, and the scanning light is reflected by the pattern or feature (e.g., fingerprint) of the biometric target. Then, the reflected scanning light is detected on the sensing unit 157 to generate a corresponding sensing area as a signal, and then the signal is recorded as a target having a data format (e.g., Figure 7). Subsequently, another light spot 355 located at another scanning position 301 is turned on to repeat the above light scanning and recording steps. Then, all the targets are integrated and calculated by the above formula to determine the fingerprint image. In this method, by sensing the total reflection signal reflected by the valley, a clear fingerprint image with higher resolution or higher contrast can be obtained, thereby reducing the possible diffuse reflection caused by moisture or other interference on the ridge 193. Therefore, the low contrast problem or image blur problem that often occurs on the general fingerprint sensor module can be improved.

[0045] Although the method of this embodiment is mainly based on detecting fingerprints as an example, the actual application of the present disclosure is not limited thereto, and can be widely used in any fingerprint sensing module or other biometric sensing module. Those skilled in the art should easily understand that the detection method of the present disclosure can also be used to detect any biometric features, such as lip lines, faces, or other suitable features with ridges and valleys.

[0046] The following will describe in detail different embodiments of the detection method disclosed herein. To simplify the description, the following will describe in detail the differences between the different embodiments and will not repeat the same features. In order to make it easier to compare the differences between these embodiments, the same elements in the following embodiments will be marked with the same symbols.

[0047] Please refer to Figure 8 , Figure 8 The method of detecting biometrics with an electronic device according to the second embodiment of the present disclosure is shown. The method of the present disclosure is substantially the same as the method of the first embodiment, and the similarities will not be repeated in the following. The difference between the present embodiment and the aforementioned first embodiment is that the data quantity or data area of ​​the sensing area 357 may be compressed before recording it, and / or the data matrix format 459 may be recorded according to the target area 359 (rather than according to the sensing area 357).

[0048] In this embodiment, after obtaining the sensing area 357 on the sensing unit 157, the sensing unit 157 may also generate a corresponding signal according to the sensing area 357, and then compress the corresponding signal by smoothing and / or sampling the data of the sensing area 357, such as Figure 8 As shown. In one embodiment, the trimming and / or sampling of data may be achieved by selecting a portion of the data quantity or data area according to the sensing area 357, or by reducing the data quantity or data area according to the sensing area 357, but the present invention is not limited thereto. In another embodiment, the trimming and / or sampling of data may be achieved by taking the average value of the data quantity or data area according to the sensing area 357, or by removing the maximum data or the minimum data. Therefore, after compressing the data, for example Figure 8 The number of data or data area shown in the left matrix can be reduced to Figure 8 The smaller size shown in the matrix on the right side of the figure, and the compressed data can be output as a data matrix format 459. At the same time, before recording, the corresponding signal can be calculated by the above formula to obtain the target area 359 according to the sensing area 357. Through these records, the data matrix format 459 can be recorded according to the target area 359 and / or the compressed data, and a smaller amount of data or a smaller data area can be recorded to determine the fingerprint image, thereby saving storage space. In addition, since the data matrix format 459 has been calculated as the target area 359, the subsequent fingerprint determination step can be faster and easier.

[0049] Please refer to Figures 9 to 13 A method for detecting biometric features with an electronic device according to the third embodiment of the present disclosure is shown. The method of this embodiment is substantially the same as the method of the first embodiment, and the similarities will not be repeated below. The difference between this embodiment and the aforementioned embodiments is that, in the scanning step of this embodiment, (sub) pixels of different colors may be turned on simultaneously or sequentially to generate scanning lights of different colors, such as red, green or blue scanning lights. (Sub) pixels of different colors may be selectively used according to the type or material of the sensing unit 157, such as a red (sub) pixel 155R, a green (sub) pixel 155G or a blue (sub) pixel 155B. For example, a red (sub) pixel 155R may be used on an organic photodiode to obtain a better response, but is not limited thereto.

[0050] In this embodiment, when detecting a fingerprint within the detection area 110, a scanning step is first performed. Similar to the previous embodiment, the scanning step of this embodiment is to generate scanning lights of different colors in sequence from light spots 355B and 355G of different colors. By turning on at least a portion of a plurality of corresponding (sub) pixels or at least one self-luminous module with different colors, scanning lights of different colors can be generated for scanning fingerprints. Fig. 9As shown, when (sub) pixels with different colors are used, the multiple sensing units 157B and 157G in the display layer 150 of the electronic device 100 in this embodiment may further include multiple color filters of different colors (not shown in the drawings), and the color filters are arranged on the sensing units 157B and 157G to sense the scanning light of the corresponding color. For example, in this embodiment, the sensing unit 157G may also include multiple green filters, and the sensing unit 157B may also include multiple blue filters to respectively sense multiple green scanning lights and multiple blue scanning lights, but is not limited thereto. In another embodiment, the sensing unit may also include a red filter or any other color filter to sense the red scanning light or any other color scanning light.

[0051] like Fig.10 As shown, in this embodiment, the green and blue light spots 355G and 355B can be sequentially turned on from the 36 scanning positions 301 of each scanning block 110a, scanning block 110b, scanning block 110c, and scanning block 110d, respectively. For example, the light spots 355G and 355B can be sequentially turned on from the first scanning position 301a, the first scanning position 301b, the first scanning position 301c, the first scanning position 301d of each scanning block 110a, scanning block 110b, scanning block 110c, and scanning block 110d to the thirty-sixth scanning position 301 of each scanning block 110a, scanning block 110b, scanning block 110c, and scanning block 110d. Fig.10 , only the 36 scanning positions 301a and 301 in the scanning block 110a and the first scanning position 301b in the scanning block 110b, the first scanning position 301c in the scanning block 110c, and the first scanning position 301d in the scanning block 110d are drawn as black dots, wherein the scanning positions that currently provide the light spots 355G and 355B (for example, the first scanning position 301a of the scanning block 110a, the first scanning position 301b of the scanning block 110b, the first scanning position 301c of the scanning block 110c, and the first scanning position 301d of the scanning block 110d) are drawn as solid black dots, and the scanning positions that currently do not provide the light spots 355G and 355B (for example, the second, third ... to the thirty-sixth scanning position 301 of the scanning block 110a) are drawn as hollow black dots.

[0052] like Fig.10 As shown, first, at the same time, a green light spot 355G is provided from the first scanning position 301a and the first scanning position 301d of each scanning block 110a and scanning block 110d to generate corresponding sensing areas 357aG and 357dG on the sensing unit 157G (as shown in FIG. Fig. 9At the same time, the first scanning position 301b and the first scanning position 301c of each scanning block 110b and the scanning block 110c provide a blue light spot 355B to generate a corresponding sensing area 357bB and a sensing area 357cB on the sensing unit 157B (as shown in FIG. Fig. 9 As shown in FIG. 1 ), the corresponding target area 359bB and the target area 359cB are generated. It should be noted that at the same time, the scanning light generated from the scanning position of a scanning block (e.g., the first scanning position 301a of the scanning block 110a) and the other scanning light generated from other scanning blocks adjacent to the scanning block 110a (e.g., the scanning block 110b and the scanning block 110c) may have different colors, such as Fig.10 As shown, the sensing area 357aG has different colors from the sensing area 357cB and the sensing area 357bB for easy identification, and the target area 359aG has different colors from the sensing area 359cB and the sensing area 359bB for easy identification. It should also be noted that in the present embodiment, at the same time, the sensing areas 357aG, 357bB or 357aG, 357cB generated by the light spots 355G, 355B of different colors located at the first scanning position 301a, 301b, 301c of two adjacent scanning blocks 110a, 110b or 110a, 110c may selectively overlap (or partially overlap) with each other, because for clear identification, the sensing areas 357aG, 357bB or 357aG, 357cB are respectively sensed by the sensing units 157G, 157B which also have different colors. At the same time, when the sensing areas 357aG and 357cB generated by the light spots 355G and 355B at the first scanning positions 301a, 301b and 301c of two adjacent scanning blocks 110a, 110b or scanning blocks 110a, 110c are allowed to overlap with each other, the minimum scanning spacing between the light spots 355G and 355B in this embodiment can be further reduced to obtain better resolution for the fingerprint image.

[0053] After obtaining the signals of the sensing area 357aG, the sensing area 357bB, the sensing area 357cB, the sensing area 357dG and the target area 359aG, the target area 359bB, the target area 359cB, the target area 359dG, the light spots 355B and the light spots 355G are provided sequentially from the second scanning position 301, the third scanning position 301... to the thirty-sixth scanning position 301 of each scanning block 110a, the scanning block 110b, the scanning block 110c, the scanning block 110d.

[0054] like Fig.11 and Fig.12 As shown, the scanning light beams generated from two adjacent scanning positions 301 (e.g., the first scanning position 301-1 and the second scanning position 301-2) within the same scanning block (e.g., scanning block 110a) may also have different colors, such as green and blue, thereby obtaining green and blue scanning areas and target areas ( Fig.11 and Fig.12 (not shown). Fig.11 and Fig.12 In the figure, the different patterns of the squares are only used to represent scanning lights of different colors generated sequentially from light spots of different colors located at different scanning positions 301, and are not used to show the sensing area or the target area, nor are they used to show all scanning lights generated from all scanning positions at the same time.

[0055] like Fig.11 As shown, light spots 355G and light spots 355B of different colors are arranged at adjacent scanning positions 301 in a direction (e.g., direction D2). Specifically, when the first scanning position 301-1 of the scanning block 110a provides a green light spot 355G, for example, the second scanning position 301-2 of the scanning block 110a adjacent to the first scanning position 301-1 in the direction D2 can provide a blue light spot 355B, the third scanning position 301-3 of the scanning block 110a adjacent to the second scanning position 301-2 in the direction D2 can provide another green light spot 355G, and the fourth scanning position 301-4 of the scanning block 110a adjacent to the third scanning position 301-3 of the scanning block 110a in the direction D2 can provide another blue light spot 355B, and so on. On the other hand, the seventh scanning position 301-7 of the scanning block 110a adjacent to the first scanning position 301-1 in the direction D1 can also provide a green light spot 355G, the eighth scanning position 301-8 of the scanning block 110a adjacent to the seventh scanning position 301-7 in the direction D2 can provide a blue light spot 355B, and the ninth scanning position 301-9 of the scanning block 110a adjacent to the eighth scanning position 301-8 in the direction D2 can provide a green light spot 355G, and so on.

[0056] However, in another embodiment, the first scanning position 301-1 or the seventh scanning position 301-7 may also provide blue light spots (not shown in the drawings), and the second scanning position 301-2 or the eighth scanning position 301-8 adjacent to the first scanning position 301-1 or the seventh scanning position 301-7 in the direction D2 may provide green light spots (not shown in the drawings). Alternatively, adjacent scanning positions in the direction D1 may provide different colors (not shown in the drawings). Therefore, all green light spots 355G and all blue light spots 355B within the same scanning block 110a may be as shown in FIG. Fig.11 The arrangement is shown as a stripe staggered arrangement, wherein all green light dots 355G or all blue light dots 355B are arranged into a plurality of rows along direction D1. In another embodiment, all green light dots 355G or all blue light dots 355B may also be arranged into a plurality of rows along direction D2 (not shown in the drawings).

[0057] like Fig.12 As shown, light spots 355G and 355B of different colors are arranged at adjacent scanning positions 301 in two directions (e.g., direction D1 and direction D2). In detail, when the first scanning position 301-1 of the scanning block 110a provides a green light spot 355G, for example, the second scanning position 301-2 of the scanning block 110a adjacent to the first scanning position 301-1 in the direction D2 can provide a blue light spot 355B, the third scanning position 301-3 of the scanning block 110a adjacent to the second scanning position 301-2 in the direction D2 can provide another green light spot 355G, and the fourth scanning position 301-4 of the scanning block 110a adjacent to the third scanning position 301-3 of the scanning block 110a in the direction D2 can provide another blue light spot 355B, and so on. Similarly, the seventh scanning position 301-7 of the scanning block 110a adjacent to the first scanning position 301-1 in direction D1 can provide another blue light spot 355B, the eighth scanning position 301-8 of the scanning block 110a adjacent to the seventh scanning position 301-7 in direction D2 can provide a green light spot 355G, the ninth scanning position 301-9 of the scanning block 110a adjacent to the eighth scanning position 301-8 in direction D2 can provide another blue light spot 355B, and so on.

[0058] However, in another embodiment, the first scanning position 301-1 may also provide blue light spots (not shown in the drawings), and the second scanning position 301-2 or the seventh scanning position 301-7 adjacent to the first scanning position 301-1 in the direction D2 or the direction D1 may provide green light spots (not shown in the drawings). Therefore, all green light spots 355G and all blue light spots 355B within the same scanning block 110a may be as shown in FIG. Fig.12Then, the target area ( Fig.12 The scanning block 110a still needs to cover the entire area within the scanning block 110a.

[0059] It should be noted that although the light spots 355G and 355B of different colors can be arranged in a staggered stripe or mosaic pattern, the sensing units 157G and 157B having different color filters disposed thereon are not limited to having a similar arrangement. In one embodiment, the sensing units 157G and 157B having different color filters can be arranged in a mosaic pattern (e.g., Fig. 9 As shown), in another embodiment, the sensing units may also be arranged in a staggered strip shape, wherein the sensing units 157G and 157B of different colors may be arranged in a plurality of columns or a plurality of rows, or may be arranged in any other suitable manner.

[0060] like Fig.13 As shown, since the sensing areas generated from adjacent scanning positions 301 may be similar or may partially overlap each other, the number of light spots 355B and 355G may also be reduced. Fig.13 , the scanning positions where the light spots 355G and 355B are predetermined to be provided (e.g., the first scanning position 301-1 and the third scanning position 301-3) are depicted as solid black dots, and the scanning positions where the light spots 355G and 355B are not predetermined to be provided (e.g., the second scanning position 301-2 and the fourth scanning position 301-4) are depicted as hollow black dots. Specifically, the light spots of a portion of the scanning positions (e.g., the second scanning position 301-2, the fourth scanning position 301-4, the sixth scanning position 301-6, the seventh scanning position 301-7, the ninth scanning position 301-9, or the eleventh scanning position 301-11) may be selectively turned off, and the total number of the light spots 355B and 355G in the scanning block 110a may be reduced, for example, from 36 light spots 355B and 355G to 18 light spots 355B and 355G (e.g., the second scanning position 301-2, the fourth scanning position 301-4, the sixth scanning position 301-6, the seventh scanning position 301-7, the ninth scanning position 301-9, or the eleventh scanning position 301-11). Fig.13 As shown on the right side of , the first scanning position 301-1 (light spot 355G), the third scanning position 301-3 (light spot 355B), the fifth scanning position 301-5 (light spot 355G), the eighth scanning position 301-8 (light spot 355B), the tenth scanning position 301-10 (light spot 355G), the twelfth scanning position 301-12 (light spot 355B), the thirteenth, fifteenth, seventeenth, twentieth, twenty-second, twenty-fourth, twenty-fifth, twenty-seventh, twenty-ninth, thirty-second, thirty-fourth, and thirty-sixth scanning positions 301) are respectively used to generate corresponding target areas 359G, target areas 359B and sensing areas ( Fig.13 However, it should be noted that even if the total number of light spots 355B and 355G in the scanning block 110a is reduced, the target areas 359G and 359B generated by the light spots 355B and 355G at the remaining scanning positions 301 must still cover the entire area within the scanning block 110a. Fig.13 As shown, repeated and overlapping target areas 359G and target areas 359B are depicted to show their coverage within the scanning block 110a. In another embodiment, a smaller or larger number of scanning positions 301 may be selectively opened or closed according to the required resolution of the fingerprint image.

[0061] Then, the recording step of the present embodiment may be performed, and the corresponding signal of the sensing area 357 may be directly output in a data matrix format, or the corresponding signal may be output in a data matrix format after the data quantity or data area of ​​the sensing area 357 is compressed and / or calculated as a target area. The detailed steps of the recording step of the present embodiment may be roughly similar to Figure 7 and Figure 8 The steps of the aforementioned embodiment are shown and will not be repeated in the following.

[0062] It should be understood that, although each scanning block 110a, scanning block 110b, scanning block 110c, and scanning block 110d in this embodiment exemplarily includes a 6×6 matrix (such as Figures 10 to 13 355 ), but the present disclosure is not limited thereto. The number of matrices is merely an example and is not intended to be limiting. The number of matrices is mainly related to the number of light spots 355, and the number of light spots 355 is related to the required resolution. For example, a small number of matrices (e.g., a 4×4 matrix) can save more scanning time, and the image resolution obtained thereby can be relatively low. Therefore, in another embodiment, the scanning block 110a can be selectively divided into any matrix according to the required resolution of the fingerprint image.

[0063] In summary, according to the method of detecting biometric features using the electronic device 100 in this embodiment, the first color light spot (e.g., green light spot 355G) located at the scanning position 301 in each of the plurality of scanning blocks 110a, 110b, 110c, and 110d is first turned on to generate a first color scanning light, and the first color scanning light is reflected by the pattern or feature (e.g., fingerprint) of the biometric target. Next, the reflected first color scanning light is detected on the first color sensing unit (e.g., green sensing unit 157G) to generate a sensing area 357G or a signal, and then the signal is recorded directly or after the signal is compressed and / or calculated as a data format (e.g., Figure 8 or Figure 7) target. Subsequently, the second color light spot (e.g., blue light spot 355B) located at another scanning position 301 in each of the plurality of scanning blocks 110a, scanning block 110b, scanning block 110c, and scanning block 110d is turned on to repeat the above light scanning and recording steps, thereby obtaining another signal, and directly or after compressing and / or calculating the signal, recording the other signal as another target in data format. The first color light spot and the second color light spot are turned on alternately to obtain a uniform target. Afterwards, all the targets are integrated to determine or calculate the fingerprint image or any other biometric feature. Therefore, the present method can not only obtain a higher resolution or a higher contrast by using scanning lights of different colors, but also further realize a fast and efficient scanning step.

[0064] Those skilled in the art should easily understand that the electronic device disclosed in the present invention is not limited to the aforementioned display device, and may also include a lighting device, an antenna device, a sensing device or a splicing device, but is not limited thereto. The electronic device may selectively include a bendable electronic device or a flexible electronic device, such as a flexible liquid crystal (LC) display device or a flexible light emitting diode display device, the light emitting display device includes, for example, an organic light emitting diode (OLED) or an inorganic light emitting diode (LED), and the inorganic light emitting diode includes, for example, a sub-millimeter LED (mini LED), a micro LED (micro LED), a quantum dot LED (QLED / QDLED) or any other suitable material or material combination of LED, but is not limited thereto. The antenna device may be a liquid crystal antenna, but the present disclosure is not limited thereto. The splicing device may be a display splicing device or an antenna splicing device, but the present disclosure is not limited thereto. It is worth noting that the electronic device may be any variation, arrangement or combination of the above, but the present disclosure is not limited thereto.

[0065] The above description is only an embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for detecting biometrics using a display, the display having a plurality of first color pixels and a plurality of second color pixels, characterized in that: The method comprises the following steps: Providing a detection area of ​​the display, the display comprising a plurality of first sensing units and a plurality of second sensing units, and the plurality of first sensing units and the plurality of second sensing units sense different color lights; Sequentially turning on at least a portion of the plurality of first color pixels in the detection area to generate a first color scanning light, and sequentially turning on at least a portion of the plurality of second color pixels in the detection area to generate a second color scanning light; A first sensing area is generated by sensing the first color scanning light through the plurality of first sensing units, and a second sensing area is generated by sensing the second color scanning light through the plurality of second sensing units, wherein the first sensing area and the second sensing area are generated at the same time, which means within the same time interval or at the same time point; and Determine a biometric characteristic.

2. The method according to claim 1, characterized in that The plurality of first sensing units include a plurality of first color filters, and the plurality of second sensing units include a plurality of second color filters.

3. The method according to claim 2, characterized in that The plurality of first color filters are blue filters, and the plurality of second color filters are green filters.

4. The method according to claim 1, characterized in that: The plurality of first sensing units and the plurality of second sensing units are arranged in a staggered manner in strips.

5. The method according to claim 1, characterized in that The plurality of first sensing units and the plurality of second sensing units are arranged in a mosaic type.

6. The method according to claim 1, characterized in that The first sensing area overlaps the second sensing area.

7. The method according to claim 1, characterized in that The first color scanning light is a blue scanning light, and the second color scanning light is a green scanning light.

8. The method according to claim 1, characterized in that Also includes: The plurality of first sensing units generate a first signal, and the plurality of second sensing units generate a second signal; dividing the detection area into a first scanning block and a second scanning block; and Within a first same time, at least a portion of the plurality of first color pixels at a first scanning position within the first scanning block within the detection area is turned on to generate at least a portion of the first color scanning light, and at least a portion of the plurality of second color pixels at a first scanning position within the second scanning block within the detection area is turned on to generate at least a portion of the second color scanning light.

9. The method according to claim 8, characterized in that Also includes: compressing the first signal and the second signal, wherein the step of determining the biometric feature is performed by calculating the compressed first signal and the compressed second signal; and After the first same time, within a second same time, another portion of the multiple first color pixels at a second scanning position within the first scanning block within the detection area is turned on to generate another portion of the first color scanning light, and another portion of the multiple second color pixels at a second scanning position within the second scanning block within the detection area is turned on to generate another portion of the second color scanning light.

10. A method for detecting biometrics using a display, the display having a plurality of first color pixels, characterized in that: The method comprises the following steps: Providing a detection area of ​​the display, the display comprising a plurality of sensing units; Sequentially turning on at least a portion of the plurality of first color pixels in the detection area to generate a scanning light; The scanning light is sensed by the plurality of sensing units to generate a sensing area; The plurality of sensing units generate a signal according to the sensing area; compressing the signal by reducing a data area of ​​the sensing area; and A biological feature is determined by calculating the compressed signal.

11. The method according to claim 10, characterized in that The reducing the data area of ​​the sensing area includes taking an average value of the data area of ​​the sensing area.

12. The method according to claim 10, characterized in that Also included is compressing the signal by reducing the amount of data in the sensing area.

13. The method according to claim 12, characterized in that The reducing the data quantity of the sensing area includes taking an average of the data quantity of the sensing area, or removing the maximum data or the minimum data.

Images