CN114005146A - Embedded optical fingerprint display equipment - Google Patents
Embedded optical fingerprint display equipment Download PDFInfo
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- CN114005146A CN114005146A CN202011536801.1A CN202011536801A CN114005146A CN 114005146 A CN114005146 A CN 114005146A CN 202011536801 A CN202011536801 A CN 202011536801A CN 114005146 A CN114005146 A CN 114005146A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
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Abstract
An in-cell optical fingerprint display device having a substrate, a plurality of pixel units disposed on the substrate and arranged in a matrix, and a transparent cover disposed over the plurality of pixel units, at least one pixel unit comprising: a display pixel unit having a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit disposed on the substrate; and a fingerprint pixel unit having an optical fingerprint sensor disposed on the substrate and a specific color resistor disposed on the optical fingerprint sensor, wherein the specific color resistor is a blue color resistor or a green color resistor.
Description
Technical Field
The present invention relates to a fingerprint display device, and more particularly, to an embedded optical fingerprint display device.
Background
FIG. 1 is a schematic diagram illustrating the integration of an optical fingerprint sensor with a Liquid Crystal Display (LCD) panel. The optical fingerprint sensor 11 is, for example, disposed between the thin film transistor layer 12 and the filter substrate layer 13 of the liquid crystal display panel structure, so that light from the reflective layer 14 can be reflected to the optical fingerprint sensor 11 after encountering a finger on the glass substrate 15, and because the reflectivity of the peak and the trough of the fingerprint is different, a fingerprint image can be reconstructed according to the sensing amount of the optical fingerprint sensor 11.
With the structure of the optical fingerprint display device, when the device is used in an outdoor environment, strong sunlight 25 may penetrate through a finger and enter the optical fingerprint sensor 11, and the light penetrating through the finger will cause an increase in background signal, so that the peak and trough signals of the fingerprint are not clearly distinguished, thereby affecting the determination of the true fingerprint, and increasing the False Rejection Rate (FRR) of fingerprint identification. In addition, another problem of the aforementioned conventional optical fingerprint display apparatus is that the resolution of the false fingerprint is not good, and if the pattern of the false fingerprint is the same as that of the true fingerprint, the shape of the fingerprint detected by the optical fingerprint sensor 11 is also similar, so that the false fingerprint cannot be distinguished.
Therefore, there are still many defects in the design of the existing optical fingerprint display device and the need for improvement.
Disclosure of Invention
The invention mainly aims to provide an embedded optical fingerprint display device, which reduces the false rejection rate by adding a color resistor with a specific color above an optical fingerprint sensor and introduces a specific color resistor arrangement to achieve the anti-counterfeiting function.
According to an aspect of the present invention, an in-cell optical fingerprint display apparatus is provided, which has a substrate, a plurality of pixel units disposed on the substrate and arranged in a matrix, and a transparent cover disposed on the pixel units, wherein at least one pixel unit comprises: a display pixel unit at least comprising a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit arranged on the substrate; and a fingerprint pixel unit having an optical fingerprint sensor disposed on the substrate and a specific color resistor disposed on the optical fingerprint sensor, wherein the specific color resistor is a blue color resistor or a green color resistor.
According to another aspect of the present invention, an in-cell optical fingerprint display apparatus is provided, which has a substrate, a plurality of pixel units disposed on the substrate and arranged in a matrix, and a transparent cover disposed on the plurality of pixel units, wherein at least one pixel unit comprises: a display pixel unit at least comprises a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit which are arranged on the substrate, and a fingerprint pixel unit is provided with an optical fingerprint sensor which is arranged on the substrate, wherein a green color resistor, a red color resistor or no color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and blue color resistors are arranged above the optical fingerprint sensors of the other pixel units.
According to another aspect of the present invention, an in-cell optical fingerprint display apparatus is provided, which has a substrate, a plurality of pixel units disposed on the substrate and arranged in a matrix, and a transparent cover disposed on the pixel units, wherein at least one pixel unit comprises: a display pixel unit at least comprises a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit which are arranged on the substrate, and a fingerprint pixel unit is provided with an optical fingerprint sensor which is arranged on the substrate, wherein a blue color resistor, a red color resistor or no color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and green color resistors are arranged above the optical fingerprint sensors of the other pixel units.
According to another aspect of the present invention, an in-cell optical fingerprint display apparatus is provided, which has a substrate, a plurality of pixel units disposed on the substrate and arranged in a matrix, and a transparent cover disposed on the pixel units, wherein at least one pixel unit comprises: a display pixel unit at least comprises a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit which are arranged on the substrate, and a fingerprint pixel unit is provided with an optical fingerprint sensor which is arranged on the substrate, wherein a red color resistor, a green color resistor or a blue color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and color resistors are not arranged above the optical fingerprint sensors of the other pixel units.
The foregoing summary, as well as the following detailed description, is exemplary in nature and is intended to further illustrate the present invention as claimed, and other objects and advantages of the invention will be apparent from the following description and drawings.
Drawings
FIG. 1 shows a schematic diagram of an integrated optical fingerprint sensor and LCD panel.
Fig. 2 shows the transmission spectra of the red color resistance, the green color resistance and the blue color resistance corresponding to the red sub-pixel, the green sub-pixel and the blue sub-pixel of the lcd device.
FIG. 3 is a schematic diagram of an in-line optical fingerprint display apparatus according to the present invention.
Fig. 4 is a cross-sectional view of a pixel unit of a first embodiment of an in-cell optical fingerprint display apparatus according to the present invention.
FIG. 5 shows an example of an arrangement of specific color resists for achieving an anti-counterfeit function of the embedded optical fingerprint display apparatus of the present invention.
FIG. 6 shows another example of an in-line optical fingerprint display apparatus according to the present invention for achieving the specific color resistance arrangement of the anti-counterfeit function.
FIG. 7 shows another example of an in-cell optical fingerprint display apparatus according to the present invention for achieving anti-counterfeit function.
FIG. 8 is a cross-sectional view of a pixel unit of a second embodiment of an in-line optical fingerprint display apparatus according to the present invention.
Fig. 9 is a cross-sectional view of a pixel unit of a third embodiment of an in-cell optical fingerprint display apparatus according to the present invention.
Red color resists 3-R green resists 3-G
Blue color resist 3-B specific color resist 3-S
Green organic light emitting diode 8-G blue organic light emitting diode 8-B
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific examples described herein are merely illustrative of the embodiments of the invention and are not intended to limit the invention.
Referring to fig. 2, it can be seen that red light can be blocked by the green color resistor and the blue color resistor as shown in fig. 2, that is, the color resistor (color resistance) of a specific color is added above the optical fingerprint sensor to reduce the false rejection rate and to introduce a specific color resistor arrangement to achieve the anti-counterfeit function. After the white strong light penetrates through the finger, the blue light and the green light are easy to be absorbed by human body due to dispersion because of the short wavelength, so that the penetrating light is red. In the same situation, when the fingerprint is identified outdoors, although the light with shorter wavelengths such as blue and green is absorbed by the human body when the sunlight passes through the finger, the light with longer wavelengths such as red light and infrared light still penetrates the finger, so that the optical fingerprint background signal under strong light is too strong, and the accuracy of fingerprint judgment is further affected.
Therefore, the characteristic that the green color resistance and the blue color resistance can block the red light can solve the problem that the strong sunlight causes the optical fingerprint background signal to be too strong. Fig. 3 is a schematic diagram of an in-cell optical fingerprint display apparatus according to the present invention, wherein the in-cell optical fingerprint display apparatus has a substrate 57, a plurality of pixel units 41 disposed on the substrate 57 and arranged in a matrix, and a transparent cover 59 covering the substrate 57 and the pixel units 41 and being transparent, so as to be indicated by dotted lines in fig. 3. Each pixel unit 41 has a display pixel unit 411 and a fingerprint pixel unit 413, the area occupied by the display pixel unit 411 in the pixel unit 41 is a pixel display area 421, the area occupied by the fingerprint pixel unit 413 in the pixel unit 41 is a fingerprint detection area 423, and the sizes and positions of the pixel display area 421 and the fingerprint detection area 423 shown in fig. 3 are exemplary and not intended to be limiting. In an embodiment, it is also possible that the partial pixel unit 41 is provided with the display pixel unit 411 and the fingerprint pixel unit 413, and the rest of the pixel units 41 only have the display pixel unit 411 but not have the fingerprint pixel unit 413. That is, the fingerprint pixel unit 413 and the display pixel unit 411 are not in a one-to-one configuration, and there may be more display pixel units 411 than fingerprint pixel units 413.
FIG. 4 is a cross-sectional view of a pixel unit 41 of a first embodiment of an in-cell optical fingerprint display apparatus of the present invention, wherein the display pixel unit 411 of the present embodiment is an RGB display pixel of a Liquid Crystal Display (LCD), wherein the pixel unit 41 has a first display electrode 51, a second display electrode 52, a third display electrode 53, and an optical fingerprint sensor 55 disposed on a substrate 57, the pixel unit 41 further has a red color resistor 3-R disposed on the first display electrode 51, a green color resistor 3-G disposed on the second display electrode 52, a blue color resistor 3-B disposed on the third display electrode 53, and a specific color resistor 3-S disposed on the optical fingerprint sensor 55, and the first display electrode 51 and the red color resistor 3-R constitute a red sub-pixel unit 31, the second display electrode 52 and the green color resistor 3-G constitute a green sub-pixel unit 32, the third display electrode 53 and the blue color filter 3-B form a blue sub-pixel unit 33, and the optical fingerprint sensor 55 and the specific color filter 3-S form the fingerprint pixel unit 413. In the embodiment, the display pixel unit 411 is illustrated as a combination of RGB sub-pixels, but the invention is not limited thereto, and the display pixel unit 411 may also be a combination of other possible sub-pixels, such as a combination of RGBW sub-pixels, a combination of RGBG sub-pixels, or a combination of RGBRGW sub-pixels.
As shown in fig. 4, the embedded optical fingerprint display device optionally has a black matrix (black matrix)56, since the black matrix 56 is formed by a plurality of black lines 565, a matrix formed by a plurality of transparent areas 561 arranged may be defined, and the red sub-pixel unit 31, the green sub-pixel unit 32, the blue sub-pixel unit 33, and the fingerprint pixel unit 413 are respectively positioned corresponding to the transparent areas 561 of the black matrix 56, thereby preventing ambient light from irradiating the tft circuit of the pixel unit 41 to maintain the display quality and fingerprint sensing of the embedded optical fingerprint display device. In addition, the embedded optical fingerprint display device further has a transparent cover 59 disposed on the black matrix 56 and the color resistors 3-R,3-G,3-B,3-S, so that the light source 45 can display color through the color resistors 3-R,3-G,3-B, or the light source 45 can be reflected to the optical fingerprint sensor 55 by the user' S finger 39 covering the transparent cover 59 for fingerprint recognition.
In this embodiment, the specific color resists 3-S can be blue resists or green resists, and since the blue resists or green resists capable of filtering out red light are added above the optical fingerprint sensor 55, the red light that is shown after the sunlight 25 penetrates the finger 39 can be filtered out by the blue resists or green resists, thereby reducing the noise generated by the sunlight 25, improving the accuracy of fingerprint determination, and further reducing the false rejection rate of fingerprint identification. In addition, since the addition of the blue color resistor or the green color resistor on the optical fingerprint sensor 55 is identical to the arrangement of the color resistors 3-R,3-G,3-B on the display electrodes 51,52,53 in structure and manufacturing process, the present invention can achieve fingerprint identification with low false rejection rate without changing the structure and manufacturing process of the display device.
In addition, for the anti-counterfeit function, when the specific color resists 3-S are blue resists, as shown in fig. 5, at least one of the pixel units 41 has a green resist (denoted by G in the figure), a red resist (denoted by R in the figure) or no resist (denoted by X in the figure) on the optical fingerprint sensor 55, and the rest of the pixel units 41 still have a blue resist (denoted by B in the figure) for filtering out red light to reduce the interference of strong sunlight. Fig. 5 shows that the in-cell optical fingerprint display apparatus of the present invention is configured to add a green color resistance (G in the figure) on the optical fingerprint sensors 55 of the pixel units 41, add a red color resistance (R in the figure) on the optical fingerprint sensors 55 of the pixel units 41, and add no color resistance (X in the figure) on the optical fingerprint sensors 55 of the pixel units 41, but this is merely an example and not a limitation, and it is conceivable that the in-cell optical fingerprint display apparatus of the present invention may also be configured to add a green color resistance on the optical fingerprint sensor 55 of at least one pixel unit 41, and add a red color resistance on the optical fingerprint sensor 55 of at least one pixel unit 41; or the optical fingerprint sensor 55 of at least one pixel unit 41 is added with a green color resistance, and the optical fingerprint sensor 55 of at least one pixel unit 41 is not added with a color resistance; or the pixel units are configured such that a red color resist is added above the optical fingerprint sensor 55 of at least one pixel unit 41, and no color resist is added above the optical fingerprint sensor 55 of at least one pixel unit 41; or a green color resistance is added above the optical fingerprint sensor 55 configured as at least one pixel unit 41; or a red color resistance is added above the optical fingerprint sensor 55 configured as at least one pixel unit 41; or is configured such that no color resistance is applied over the optical fingerprint sensor 55 of at least one pixel cell 41.
When the specific color resistor 3-S is a green color resistor, as shown in fig. 6, a blue color resistor (shown as B), a red color resistor (shown as R) or no color resistor (shown as X) is added above the optical fingerprint sensor 55 of at least one of the pixel units 41 arranged in the matrix, and the remaining pixel units 41 are still added with a green color resistor (shown as G) capable of filtering out red light to reduce the interference of strong sunlight. Fig. 6 shows that the in-cell optical fingerprint display apparatus of the present invention is configured to add a blue color resistance (shown as B) on the optical fingerprint sensor 55 of the plurality of pixel units 41, add a red color resistance (shown as R) on the optical fingerprint sensor 55 of the plurality of pixel units 41, and add no color resistance (shown as X) on the optical fingerprint sensor 55 of the plurality of pixel units 41, but this is merely an example and not a limitation, and it is conceivable that the in-cell optical fingerprint display apparatus of the present invention may also be configured to add a blue color resistance on the optical fingerprint sensor 55 of at least one pixel unit 41, and add a red color resistance on the optical fingerprint sensor 55 of at least one pixel unit 41; or the optical fingerprint sensor 55 of at least one pixel unit 41 is added with blue color resistance, and the optical fingerprint sensor 55 of at least one pixel unit 41 is not added with color resistance; or the pixel units are configured such that a red color resist is added above the optical fingerprint sensor 55 of at least one pixel unit 41, and no color resist is added above the optical fingerprint sensor 55 of at least one pixel unit 41; or the optical fingerprint sensor 55 configured as at least one pixel unit 41 is added with a blue color resistance; or a red color resistance is added above the optical fingerprint sensor 55 configured as at least one pixel unit 41; or is configured such that no color resistance is applied over the optical fingerprint sensor 55 of at least one pixel cell 41.
In addition, another embodiment of the present invention can also be designed to achieve the anti-counterfeit function, as shown in fig. 7, in the plurality of pixel units 41 arranged in the matrix, a red color resistor (R), a green color resistor (G) or a blue color resistor (B) is added on the optical fingerprint sensor 55 of at least one pixel unit 41, and no color resistor is added on the optical fingerprint sensor 55 of the other pixel units 41. Fig. 7 shows that the in-cell optical fingerprint display apparatus of the present invention is configured to add a red color resistance (R in the figure) on the optical fingerprint sensor 55 of the plurality of pixel units 41, add a green color resistance (G in the figure) on the optical fingerprint sensor 55 of the plurality of pixel units 41, and add a blue color resistance (B in the figure) on the optical fingerprint sensor 55 of the plurality of pixel units 41, but this is merely exemplary and not limiting, and it is conceivable that the in-cell optical fingerprint display apparatus of the present invention can also be configured to add a blue color resistance on the optical fingerprint sensor 55 of at least one pixel unit 41, and add a red color resistance on the optical fingerprint sensor 55 of at least one pixel unit 41; or the optical fingerprint sensor 55 of at least one pixel unit 41 is added with blue color resistance, and the optical fingerprint sensor 55 of at least one pixel unit 41 is added with green color resistance; or the optical fingerprint sensor 55 of at least one pixel unit 41 is configured to add a red color resistance above, and the optical fingerprint sensor 55 of at least one pixel unit 41 is configured to add a green color resistance above; or the optical fingerprint sensor 55 configured as at least one pixel unit 41 is added with a blue color resistance; or a red color resistance is added above the optical fingerprint sensor 55 configured as at least one pixel unit 41; or a green color resist is added over the optical fingerprint sensor 55 configured as at least one pixel cell 41.
With the above configuration of color resistors, because the color of the false fingerprint is different from that of the true fingerprint, and the true fingerprint has the structure of epidermis and genuine leather, the ratio of the signal intensity sensed by the optical fingerprint sensor 55 with blue color resistor, green color resistor, red color resistor, and without color resistor added to the false fingerprint is different from that of the true fingerprint, so that the sensed fingerprint can be determined to be the true fingerprint or the false fingerprint by adding the ratio of the signal intensity sensed by the optical fingerprint sensor 55 with blue color resistor, green color resistor, red color resistor, and without color resistor added. For example, when the false fingerprint is relatively red, the intensity of the signal sensed by the optical fingerprint sensor 55 with the red color resistance is relatively strong, and the intensity of the signal sensed by the optical fingerprint sensor 55 with the other color resistances is relatively small, so as to determine the false fingerprint.
Fig. 8 is a cross-sectional view of a pixel unit 41 of a second embodiment of an in-cell optical fingerprint display apparatus of the present invention, wherein a display pixel unit 411 of the present embodiment is an RGBW display pixel of a liquid crystal display, which is similar to the previous embodiment, except that the pixel unit 41 further has a fourth display electrode 74 disposed on the substrate 57, and no color resistor is disposed above the fourth display electrode 74, so that the fourth display electrode 74 constitutes a white sub-pixel unit 71, and the white sub-pixel unit 71 also corresponds to a transparent area 561 of the black matrix 56. The color resistor 3-S of the specific color of the embodiment is still a blue color resistor or a green color resistor, so as to filter the red light rays which are presented after the sunlight 25 penetrates the finger 39, thereby reducing the noise generated by the sunlight, improving the accuracy of fingerprint judgment, and further reducing the false rejection rate of fingerprint identification. In addition, the anti-counterfeit design corresponding to the present embodiment is the same as the previous embodiment, and thus the description thereof is omitted.
Fig. 9 is a cross-sectional view of a pixel unit 41 of a third embodiment of an in-line optical fingerprint display apparatus of the present invention, wherein the display pixel unit 411 of the present embodiment is an RGB display pixel of an Organic Light Emitting Diode (OLED), wherein a pixel unit 41 has a red OLED 8-R, a green OLED 8-G, a blue OLED 8-B, and an optical fingerprint sensor 55 disposed on a substrate 57, the optical fingerprint sensor 55 has a specific color resistor 3-S disposed thereon, the aforementioned red OLED 8-R is configured as a red sub-pixel 81, the aforementioned green OLED 8-G is configured as a green sub-pixel 82, the aforementioned blue OLED 8-B is configured as a blue sub-pixel 83, and the optical fingerprint sensor 55 and the specific color resistor 35 are configured as the fingerprint pixel 413. In addition, the in-cell optical fingerprint display apparatus further has a transparent cover 59 disposed on the red sub-pixel unit 81, the green sub-pixel unit 82, the blue sub-pixel unit 83 and the fingerprint pixel unit 413, so that the light sources 45 emitted by the red, green and blue oleds 8-R, 8-G and 8-B are displayed in color, or the light sources 45 are reflected to the optical fingerprint sensor 55 by the finger 39 of the user covering the transparent cover 59 for fingerprint identification.
In this embodiment, the specific color resists 3-S are blue resists or green resists, and since the blue resists or green resists capable of filtering out red light are added above the optical fingerprint sensor 55 and the red light that is reflected after the sunlight 25 penetrates the finger 39 can be filtered out by the blue resists or green resists, the noise generated by the sunlight 25 can be reduced, the fingerprint determination accuracy can be improved, and the false rejection rate of fingerprint identification can be reduced. In addition, the corresponding anti-counterfeit design of the present embodiment is the same as the first embodiment, and thus is not described again.
In addition, besides visible light, the energy of sunlight in an infrared band (700-900 nm) is very strong, so that the specific color resistance 3-S (green color resistance or blue color resistance) of the embedded optical fingerprint display equipment can be further added with an organic color material with an absorption band in a near-infrared region near 700-900 nm, and the filtering effect of the green color resistance and the blue color resistance in the infrared band is improved.
The invention can effectively filter the red light rays which are shown after sunlight penetrates through a finger, further reduce noise generated by the sunlight, improve the accuracy of fingerprint judgment, further reduce the false rejection rate of fingerprint identification, and in addition, the sensed fingerprint is judged to be a true fingerprint or a false fingerprint according to the signal intensity ratio sensed by the optical fingerprint sensor by introducing specific color resistance arrangement, thereby achieving the function of anti-counterfeiting.
The above-described embodiments are merely exemplary for convenience in explanation, and the scope of the claims of the present invention should be determined by the claims rather than by the limitations of the above-described embodiments.
Claims (27)
1. An in-cell optical fingerprint display device having a substrate, a plurality of pixel units disposed on the substrate and arranged in a matrix, and a transparent cover disposed over the plurality of pixel units, wherein at least one pixel unit comprises:
a display pixel unit at least comprising a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit arranged on the substrate; and
the fingerprint pixel unit is provided with an optical fingerprint sensor arranged on the substrate and a specific color resistor arranged on the optical fingerprint sensor, wherein the specific color resistor is a blue color resistor or a green color resistor.
2. The in-cell optical fingerprint display apparatus of claim 1, wherein the red sub-pixel unit has a first display electrode disposed on the substrate and a red color resistor disposed on the first display electrode; the green sub-pixel unit is provided with a second display electrode arranged on the substrate and a green color resistor arranged on the second display electrode; the blue sub-pixel unit is provided with a third display electrode arranged on the substrate and a blue color resistor arranged on the third display electrode.
3. The in-cell optical fingerprint display apparatus of claim 2 further comprising a black matrix, wherein the black matrix is a matrix formed by a plurality of black lines to define a plurality of open areas, and the red sub-pixel unit, the green sub-pixel unit, the blue sub-pixel unit, and the fingerprint pixel unit of each pixel unit are positioned to correspond to the open areas of the black matrix respectively.
4. The in-cell optical fingerprint display apparatus of claim 2 wherein the display pixel unit further comprises a white sub-pixel unit having a fourth display electrode disposed on the substrate and no color resists disposed over the fourth display electrode.
5. The in-cell optical fingerprint display apparatus of claim 4 further comprising a black matrix, wherein the black matrix is a matrix formed by a plurality of black bars defining a plurality of open areas, and the red sub-pixel unit, the green sub-pixel unit, the blue sub-pixel unit, the white sub-pixel unit, and the fingerprint pixel unit of each pixel unit are positioned to correspond to the open areas of the black matrix respectively.
6. The in-cell optical fingerprint display apparatus of claim 1, wherein the red sub-pixel unit has a red organic light emitting diode disposed on the substrate; the green sub-pixel unit is provided with a green organic light-emitting diode arranged on the substrate; the blue sub-pixel unit is provided with a blue organic light emitting diode arranged on the substrate.
7. An in-cell optical fingerprint display device having a substrate, a plurality of pixel units disposed on the substrate and arranged in a matrix, and a transparent cover disposed over the plurality of pixel units, wherein at least one pixel unit comprises: a display pixel unit at least comprises a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit which are arranged on the substrate, a fingerprint pixel unit is provided with an optical fingerprint sensor which is arranged on the substrate, a green color resistor, a red color resistor or no color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and blue color resistors are arranged above the optical fingerprint sensors of the rest pixel units.
8. The in-line optical fingerprint display apparatus of claim 7, wherein the disposing of a green color resistor, a red color resistor or no color resistor above the optical fingerprint sensor of the at least one pixel unit is configured to: a green color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and no color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; a green color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; a green color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and a color resistor is not arranged above the optical fingerprint sensor of at least one pixel unit; a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and a color resistor is not arranged above the optical fingerprint sensor of at least one pixel unit; a green color resistance is arranged above the optical fingerprint sensor of at least one pixel unit; a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; or no color resistance is arranged above the optical fingerprint sensor of at least one pixel unit.
9. The in-cell optical fingerprint display apparatus of claim 7, wherein the red sub-pixel unit has a first display electrode disposed on the substrate and a red color resistor disposed on the first display electrode; the green sub-pixel unit is provided with a second display electrode arranged on the substrate and a green color resistor arranged on the second display electrode; the blue sub-pixel unit is provided with a third display electrode arranged on the substrate and a blue color resistor arranged on the third display electrode.
10. The in-cell optical fingerprint display apparatus of claim 9 further comprising a black matrix, wherein the black matrix is a matrix formed by a plurality of black lines to define a plurality of open areas, and the red sub-pixel unit, the green sub-pixel unit, the blue sub-pixel unit, and the fingerprint pixel unit of each pixel unit are positioned to correspond to the open areas of the black matrix respectively.
11. The in-cell optical fingerprint display apparatus of claim 9 wherein the display pixel unit further comprises a white sub-pixel unit having a fourth display electrode disposed on the substrate and no color resists disposed over the fourth display electrode.
12. The in-cell optical fingerprint display apparatus of claim 11 further comprising a black matrix, wherein the black matrix is a matrix formed by a plurality of black bars defining a plurality of open areas, and the red sub-pixel unit, the green sub-pixel unit, the blue sub-pixel unit, the white sub-pixel unit, and the fingerprint pixel unit of each pixel unit are positioned to correspond to the open areas of the black matrix respectively.
13. The in-cell optical fingerprint display apparatus of claim 7, wherein the red sub-pixel unit has a red organic light emitting diode disposed on the substrate; the green sub-pixel unit is provided with a green organic light-emitting diode arranged on the substrate; the blue sub-pixel unit is provided with a blue organic light emitting diode arranged on the substrate.
14. An in-cell optical fingerprint display device having a substrate, a plurality of pixel units disposed on the substrate and arranged in a matrix, and a transparent cover disposed over the plurality of pixel units, wherein at least one pixel unit comprises: a display pixel unit at least comprises a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit which are arranged on the substrate, a fingerprint pixel unit is provided with an optical fingerprint sensor which is arranged on the substrate, a blue color resistor, a red color resistor or no color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and green color resistors are arranged above the optical fingerprint sensors of the rest pixel units.
15. The in-line optical fingerprint display apparatus of claim 14, wherein the disposing a blue color resistor, a red color resistor or no color resistor above the optical fingerprint sensor of the at least one pixel unit is configured to: a blue color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and no color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; a blue color resistor is added above the optical fingerprint sensor of at least one pixel unit, and a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; a blue color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and a color resistor is not arranged above the optical fingerprint sensor of at least one pixel unit; a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and a color resistor is not arranged above the optical fingerprint sensor of at least one pixel unit; a blue color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; or no color resistance is arranged above the optical fingerprint sensor of at least one pixel unit.
16. The in-cell optical fingerprint display apparatus of claim 14 wherein the red sub-pixel unit has a first display electrode disposed on the substrate and a red color resistor disposed on the first display electrode; the green sub-pixel unit is provided with a second display electrode arranged on the substrate and a green color resistor arranged on the second display electrode; the blue sub-pixel unit is provided with a third display electrode arranged on the substrate and a blue color resistor arranged on the third display electrode.
17. The in-cell optical fingerprint display apparatus of claim 16 further comprising a black matrix formed by a plurality of black lines defining a plurality of clear areas, wherein the red sub-pixel unit, the green sub-pixel unit, the blue sub-pixel unit, and the fingerprint pixel unit of each pixel unit are positioned to correspond to a clear area of the black matrix.
18. The in-cell optical fingerprint display apparatus of claim 16 wherein the display pixel unit further comprises a white sub-pixel unit having a fourth display electrode disposed on the substrate and no color resists are disposed over the fourth display electrode.
19. The in-cell optical fingerprint display apparatus of claim 18 further comprising a black matrix formed by a plurality of black bars defining a plurality of clear areas, wherein the red sub-pixel unit, the green sub-pixel unit, the blue sub-pixel unit, the white sub-pixel unit, and the fingerprint pixel unit of each pixel unit are positioned to correspond to a clear area of the black matrix.
20. The in-cell optical fingerprint display apparatus of claim 14, wherein the red sub-pixel unit has a red organic light emitting diode disposed on the substrate; the green sub-pixel unit is provided with a green organic light-emitting diode arranged on the substrate; the blue sub-pixel unit is provided with a blue organic light emitting diode arranged on the substrate.
21. An in-cell optical fingerprint display device having a substrate, a plurality of pixel units disposed on the substrate and arranged in a matrix, and a transparent cover disposed over the plurality of pixel units, wherein at least one pixel unit comprises: a display pixel unit at least comprises a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit which are arranged on the substrate, and a fingerprint pixel unit is provided with an optical fingerprint sensor which is arranged on the substrate, a red color resistor, a green color resistor or a blue color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and color resistors are not arranged above the optical fingerprint sensors of the other pixel units.
22. The in-line optical fingerprint display apparatus of claim 21, wherein disposing a red color resistor, a green color resistor or a blue color resistor above the optical fingerprint sensor of the at least one pixel unit is configured to: a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, a green color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and a blue color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; a blue color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; a blue color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and a green color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit, and a green color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; a blue color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; a red color resistor is arranged above the optical fingerprint sensor of at least one pixel unit; or a green color resistor is arranged above the optical fingerprint sensor of at least one pixel unit.
23. The in-cell optical fingerprint display apparatus of claim 21 wherein the red sub-pixel unit has a first display electrode disposed on the substrate and a red color resistor disposed on the first display electrode; the green sub-pixel unit is provided with a second display electrode arranged on the substrate and a green color resistor arranged on the second display electrode; the blue sub-pixel unit is provided with a third display electrode arranged on the substrate and a blue color resistor arranged on the third display electrode.
24. The in-cell optical fingerprint display apparatus of claim 23 further comprising a black matrix, wherein the black matrix is a matrix formed by a plurality of black bars defining a plurality of clear areas, and the red sub-pixel unit, the green sub-pixel unit, the blue sub-pixel unit, and the fingerprint pixel unit of each pixel unit are positioned to correspond to a clear area of the black matrix.
25. The in-cell optical fingerprint display apparatus of claim 23 wherein the display pixel unit further comprises a white sub-pixel unit having a fourth display electrode disposed on the substrate and no color resists are disposed over the fourth display electrode.
26. The in-cell optical fingerprint display apparatus of claim 25 further comprising a black matrix, wherein the black matrix is a matrix formed by a plurality of black bars defining a plurality of open areas, and the red sub-pixel unit, the green sub-pixel unit, the blue sub-pixel unit, the white sub-pixel unit, and the fingerprint pixel unit of each pixel unit are positioned to correspond to the open areas of the black matrix respectively.
27. The in-cell optical fingerprint display apparatus of claim 21, wherein the red sub-pixel unit has a red organic light emitting diode disposed on the substrate; the green sub-pixel unit is provided with a green organic light-emitting diode arranged on the substrate; the blue sub-pixel unit is provided with a blue organic light emitting diode arranged on the substrate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202063057486P | 2020-07-28 | 2020-07-28 | |
| US63/057,486 | 2020-07-28 |
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| CN114005146A true CN114005146A (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011536801.1A Pending CN114005146A (en) | 2020-07-28 | 2020-12-23 | Embedded optical fingerprint display equipment |
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| TW (1) | TWI791181B (en) |
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| WO2017129126A1 (en) * | 2016-01-31 | 2017-08-03 | Shenzhen GOODIX Technology Co., Ltd. | Under-screen optical sensor module for on-screen fingerprint sensing |
| US10763296B2 (en) * | 2017-11-22 | 2020-09-01 | Taiwan Semiconductor Manufacturing Co., Ltd. | Biometric sensor and methods thereof |
| KR102507746B1 (en) * | 2018-03-02 | 2023-03-09 | 삼성전자주식회사 | Method for generating plural information using camera to sense plural wave bandwidth and apparatus thereof |
| US11030434B2 (en) * | 2018-10-08 | 2021-06-08 | Shenzhen GOODIX Technology Co., Ltd. | Lens-pinhole array designs in ultra thin under screen optical sensors for on-screen fingerprint sensing |
| CN110970480A (en) * | 2019-12-17 | 2020-04-07 | 京东方科技集团股份有限公司 | Display panel and display device |
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