TWM561810U - An optical in-display TFT-LCD panel - Google Patents

Abstract

An in-display TFT-LCD panel is disclosed in the present invention. The light sensor for fingerprint recognition is integrated with the thin film transistor (TFT) substrate. The directional light reflects totally inside the light guiding substrate to generate an optical signal for recognize the fingerprint of the user's finger pressing on the fingerprint receiving region of the light guiding substrate. Further, the light sensor converting the optical signal into the electrical signal for distinguishing the characteristics of the fingerprint. Especially, the thin film transistor (TFT) can be served as the light sensor disclosed in the present invention so that it is easy to integrate the TFT-light sensor into the TFT substrate. Hence, the volume of light sensor module can be greatly reduced and the process for the light sensor can be greatly simplified. Besides, the directional light incidents into the light guiding substrate via the specific optical structures to adjust the incident angle. Thus, neither the environmental light nor the glare will affect the accuracy of the fingerprint recognition during operation.

Description

In-screen optical fingerprinting of thin film transistor panels

The present invention relates to a thin film transistor panel, in particular to a thin film transistor panel with optical fingerprinting, and optical fingerprinting is more integrated in the thin film transistor panel.

Biometrics, like all identity authentication mechanisms, must be able to achieve identification and authentication capabilities by discriminating the unique characteristics of the organism to accurately and correctly identify and confirm correct identity. The most common biometric features include fingerprints, Biometric features such as face, iris, voice, smell, palm shape, vein, etc., but many of the biometric features are different when the biometric features are different, and the method of judgment is not the same. For the same example, for example, when identifying the iris, at least 240 feature points must be identified. The identification of the fingerprint requires only about 50 feature points. In theory, the accuracy of iris recognition should be higher than the accuracy of the fingerprint, but because of the need There are many feature points to identify, the cost of the identification module is high, and the use of fingerprints is not fast, convenient and intuitive. Therefore, the evolution and improvement of fingerprint technology is still the focus of relevant biometric technology. Another advantage of fingerprint recognition is that the fingerprint template is the smallest of all biometric features. In fact, the amount of template information required for a fingerprint is about 120-180 bytes, which makes the fingerprint information easy to store in a limited-capacity terminal device, such as a chip credit card, an e-passport, a wafer identity card, etc. Allows consumers to take their personal information with them.

At present, the fingerprint identification technology in development mainly includes semiconductor type, optical type and ultrasonic type. However, the ultrasonic fingerprint identification technology is still in the initial stage of development, and the technical cost cannot be reduced. Therefore, the current semiconductor and optical type are the mainstream. Fingerprint identification technology. Among them, the common application principles of semiconductor fingerprint sensors are RF capacitance sensing, pressure sensing, thermal sensing, etc. The principle is to miniaturize high-density capacitive sensors or pressure sensors. The device is integrated in a chip. When the fingerprint presses the surface of the wafer, the internal miniature capacitive sensor forms a fingerprint image according to different charge amounts (or temperature differences) generated by the aggregation of the peaks and valleys of the fingerprint. The optical fingerprint sensor is the earliest fingerprint acquisition device. It is a set of fingerprint acquisition devices that use a light source, a Mitsubishi mirror, and a charge-coupled component camera. After the Mitsubishi mirror is pressed by a finger, the peaks and troughs of the fingerprint absorb the total reflection. Destroy, get a fingerprint image, and then capture and output the image through the camera module, which is the architecture and principle of all optical fingerprint sensors. Since the optical acquisition method is the non-contact wafer itself, that is, the fingerprint pressing portion is composed of optical components such as acrylic or glass, the optical advantage is that the price is low and durable, but its disadvantage is that it is bulky. It is difficult to use in handheld devices.

Based on the bottleneck encountered by the prior art, the present invention provides a thin film transistor panel for in-screen optical fingerprint recognition, which can be embedded in a thin film transistor panel, and has a unique light path design to greatly reduce the ambient light source and The interference of strong light sources in fingerprint recognition.

The main purpose of this creation is to design the total reflection light path of the directional light in the panel to provide the optical signal needed for fingerprint identification, and to effectively identify the fingerprint in any light interference environment. .

The secondary purpose of this creation is to integrate the light sensing components on the thin film transistor substrate to effectively reduce and thin the sensing area and thickness of the fingerprint identification, and to apply to various portable electronic products or various thin films. Designed on the display.

Another object of the present invention is to provide an optical fingerprinting film transistor panel, most of which is used as a fingerprint receiving area of a fingerprint, and the external components are arranged in the secondary display area to realize full-screen display. Fingerprint identification panel.

In order to achieve the above object and effect, the present invention discloses a thin film transistor panel for optical fingerprint recognition in an in-screen, which is assembled in a backlight module and has a main display area and a sub-display area, and the in-screen optical fingerprinting film of the present invention is created. The transistor panel comprises a light source, a light guiding substrate, a color filter substrate, a thin film transistor substrate and a light sensing component, wherein the light source is used to provide a directional light, and the fingerprint receiving area of the light guiding substrate is provided The finger is effectively pressed, and the directional light from the light source enters the light guide substrate from the signal introduction area and is totally reflected and generates an optical signal, and finally exits the light guide substrate from the signal lead-out area and enters into the light sensing element to The optical signal is converted into an electrical signal to complete fingerprint identification of the finger. Since the creation system uses light with specific directivity as the optical signal source for fingerprint identification, and by means of total reflection to ensure the transparency of the transmission of the optical signal, the in-screen fingerprint recognition function of the full screen display can be achieved, and at the same time By integrating the light sensing element on the thin film transistor substrate, the panel can be thinned and reduced.

The technical means and its construction adopted in this creation are described in detail in the preferred embodiment of the present creation, and the features and functions are as follows.

First, please refer to FIG. 1 , which is a schematic cross-sectional view of a thin film transistor panel for optical fingerprinting in the screen. The thin film transistor panel 1a of the in-screen optical fingerprinting has a main display area 32 and a sub-display area 34, and is assembled with a backlight module BL. The in-screen optical fingerprint identification thin film transistor panel 1a includes a light source. LS, a light guiding substrate 12, a color filter substrate 14, a thin film transistor substrate 16, and a light sensing element 18.

The light source LS is used to provide a directional light (shown by a broken line), and in the embodiment, the light source LS is a separate structure, which is disposed under the light guide substrate 12, and at least the partial light source LS is positive. In the projection direction, the color filter substrate 14 or the thin film transistor substrate 16 or both are overlapped with each other, that is, at least a part of the light source LS is completely exposed to the color filter substrate 14 in the vertical direction, or The thin film transistor substrate 16 ensures that the directional light (shown by the dashed line) provided by the light source LS is not obscured by the color filter substrate 14 or the thin film transistor substrate 16, resulting in insufficient light energy; In the light source LS aspect, the light source LS is disposed as close as possible to the secondary display region 34 adjacent to the thin film transistor panel 1a. For example, the light source may be correspondingly disposed in the main display region 32 closer to the secondary display region 34. Or correspondingly disposed at the position of the secondary display area 34 or correspondingly to the position other than the secondary display area 34 (for example, can be hidden in the off-screen area, such as a position of a dead band (not shown)) For display of the present embodiment aspect impact system it is provided to correspond to the sub-display area 34 as an example. At the same time, in order to avoid the optical identification, the fingerprint recognition is affected by ambient light or strong light. No matter whether the light source LS is a collimated light source or not, it is generated by the light source by providing directional light (shown by a broken line). The directional light (shown in dashed lines) enters the light guide substrate 12 at a specific angle to distinguish it from light or strong light from the environment, improving the accuracy of fingerprint recognition. The light source LS may be a collimated light source, such as, but not limited to, a laser, a vertical cavity, a laser, etc., and may be other non-collimation sources.

The light guide substrate 12 has a fingerprint receiving area 122, a signal lead-in area 124, and a signal lead-out area 126. The fingerprint receiving area 122 may include a whole display area of the thin film transistor panel 1a or a partial display area of the thin film transistor panel 1a. In other words, the fingerprint receiving area 122 may correspond to the main display area 32 of the thin film transistor panel 1a and at least part or all of the secondary display area 34, or the fingerprint receiving area 122 may correspond to the main display area 32 of the thin film transistor panel 1a, or The fingerprint receiving area 122 corresponds only to a part of the main display area 32 of the thin film transistor panel 1a, wherein the main display area 32 is used to display important information such as, but not limited to, main function options, dialog windows, digital button display areas... Etc., while the secondary display area 34 is used to display lesser information, such as but not limited to time, date, temperature, or even an area that does not display any information, only provides a background image, or hidden in the secondary display area. An area other than 34 (for example, a position of a dead band), taking this embodiment as an example, the fingerprint receiving area 122 includes All of the main display area 32 and display area 34 local times. The signal introduction area 124 and the signal lead-out area 126 in the light guide substrate 12 may be in the form of a mirror surface, a germanium film, a grating or an optical fiber.

The color filter substrate 14 and the thin film transistor substrate 16 are sequentially arranged below the light guide substrate 12; the light sensing element 18 is substantially disposed after the directivity light (shown by a broken line) exits the light guide substrate 12. In the path, the light sensing component 18 is coupled to at least one of the color filter substrate 14 and the thin film transistor substrate 16. In this embodiment, the light sensing component 18 is a thin film transistor (TFT). Directly coupled to the thin film transistor substrate 16.

According to the above configuration, the directivity light (shown by the dashed line) provided by the light source LS enters the light guide substrate 12 from the signal introduction area 124, and is totally reflected inside the light guide substrate 12 when the user's finger FG is in the fingerprint. When pressing in the range of the receiving area 122, the path of the directional light (shown by the dashed line) is changed and an optical signal is generated at the same time. When the directional light (shown by the dashed line) exits the light guiding substrate 12 from the signal lead-out area 126. Passing through the color filter substrate 14 and into the light sensing element 18 coupled to the thin film transistor substrate 16, the light sensing element 18 receives a change in voltage due to the energy of the directional light (shown by the dashed line). Therefore, the optical signal is converted into an electrical signal, and the fingerprint feature of the user's finger FG is read out via an optical processor (not shown). Since the optical signal processing of the fingerprint feature is not complicated, the required driving circuit and the operation bit group are not complicated, so that the display processor (not shown) and the touch in the thin film transistor substrate 16 can be selectively selected. The processor (not shown) is integrated into a single drive circuit. The above optical signals may have wavelengths between 380 and 1400 nanometers (nm), including visible light (380-780 nm) and near-infrared (780-1400 nm).

In addition, when the directivity light (shown by the dashed line) provided by the light source LS enters the light guide substrate 12 in a collimated manner, as shown in FIG. 1, the slope 22 may be designed in the light guide substrate 12 or An optical structure such as a groove to adjust a traveling angle of the directional light entering the light guiding substrate 12 (shown by a broken line), and the inclined surface 22 may also be located at an outer edge of the light guiding substrate 12; if the light source LS itself is not a collimated light source The at least one first optical structure 24 is disposed between the light source LS and the light guiding substrate 12. As shown in FIG. 2, the thin film transistor panel 1b of the present aspect includes the first optical structure 24, It is mainly used to adjust the directional light from the light source LS (shown by a broken line) to collimate light before entering the light guide substrate 12, and the first optical structure 24 can be an optical element, a secondary element, an optical micro The structure and combinations thereof, for example, the first optical structure 24 can be, for example, a combination of a parabolic concentrating mirror, a compound parabolic concentrating mirror, a lens, a Fresnel lens, a grating, a cymbal, and the like. The first optical structure 24 can be a separate structure, or integrated in the light source LS, or integrated in the light guide substrate 12, which is displayed as a separate first optical structure 24. Of course, the directional light (shown by the dashed line) shown in FIG. 2 can also adjust the traveling angle in the light guiding substrate 12 by the design of the inclined surface 22 after entering the light guiding substrate 12.

Please refer to FIG. 3A for the following, which is a schematic cross-sectional view of a thin film transistor panel for revealing another in-screen optical fingerprinting. In this embodiment, the light source is replaced by the backlight module BL in the thin film transistor panel 1c, that is, the edge region of the backlight module BL or the backlight module BL for providing the secondary display or the non-display. a region to provide directional light (shown in dashed lines), while the backlight module BL in the central region is still used to provide backlight to the thin film transistor panel 1c for display; the light from the backlight module BL (shown in dashed lines) passes through After the optical component such as the light guide plate or the brightness enhancement film enters the thin film transistor substrate 16 almost vertically, and after passing through the second optical structure 26 that can change the light path, the film enters the light guide substrate 12 in a specific direction, the second The optical structure 26 can be integrated into one of the color filter substrate 14 and the light guide substrate 12, and the embodiment is illustrated as being integrated under the light guide substrate 16, and the type of the second optical structure 26 is The types may be optical elements, secondary elements, optical microstructures, and combinations thereof.

In the third embodiment, the backlight module BL1 and BL2 are divided into two parts, and a part of the backlight module BL1 is provided. The light is applied to the backlight of the thin film transistor panel 1d, and the other portion of the backlight module BL2 is used to provide directional light (shown in dashed lines) to the light guiding substrate 12, so that it can be used to provide directional light (shown by dashed lines). The illumination angle of the backlight module BL2 is adjusted to a specific angle. As shown in the figure, the reflection angles 28a, 28b or the light guide design can be used to control the illumination angle of the BL2, and the specific angle is used to provide light to the thin film transistor panel. The illumination angle of the backlight module BL1 of 16 is not necessarily the same. Similar to the above, the directional light from the backlight module BL2 (shown by the dashed line) can be selectively used on the glass if it cannot completely achieve the total light transmission after being incident on the light guiding substrate. The arrangement of the structure (as shown) or the second optical structure (not shown) to effectively adjust the directional light (shown in dashed lines) can ultimately be incident on the light guide substrate 12 for total reflection within the light guide substrate 12. Pass. The second optical structure described herein may be a stand-alone structure or integrated into at least one of the color filter substrate 14 and the light guide substrate 12. In order to avoid affecting the display effect of the thin film transistor panel 16, the backlight module BL2 for providing directional light (shown by a broken line) may be correspondingly disposed in the main display area 32 but close to the sub display area 34, or correspondingly set in the second The display area 34, or the area corresponding to the sub-display area 34, for example, may partially or completely hide the backlight module BL2 at a position of a dead band, and be used to provide a backlight to the thin film transistor panel 1d. The backlight module BL1 is still effective in providing light for display, especially backlight illumination on the main display area 32.

In the aspects disclosed in FIGS. 3a and 3b, the backlights BL and BL2 are used instead of the independent light sources. Therefore, the thinned thin film transistor panels 1c and 1d can be reduced under the premise of reducing the use of components. Improve the utilization of internal space to make the component configuration more efficient.

Please refer to FIGS. 4a and 4b, which respectively disclose the aspects of the in-screen optical fingerprinting of the two different light sensing elements. First, the light sensing elements 18 in the thin film transistor panel 1e disclosed in FIG. 4A are separately disposed and located above the color filter substrate 14, and the light sensing element 18 is coupled to the color filter substrate. 14 or a thin film transistor substrate 16; in the thin film transistor panel 1f disclosed in FIG. 4b, the light sensing elements 18 are also independently disposed between the color filter substrate 14 and the thin film transistor substrate 16, and The light sensing component 18 is coupled to the color filter substrate 14 or the thin film transistor substrate 16 .

Referring to FIG. 5, it is another embodiment of the thin film transistor panel for optical fingerprinting of the present invention. In the thin film transistor panel 1g of the present embodiment, two color polarizing substrates PF1 and PF2 are disposed on the outer side of the color filter substrate 14 and the thin film transistor substrate 16, and the light guiding substrate 12 and the color filter are interposed therebetween. The polarizing substrate PF1 between the substrates 14 can be integrated with the light guiding substrate 12 into a single structure, that is, the light guiding substrate 12 itself can have a polarizing effect.

In summary, the thin film transistor panel according to the in-screen optical fingerprinting disclosed in the present invention integrates the light sensing component that detects the fingerprint into the thin film transistor panel, and transmits the directional light through the light guiding substrate. Total reflection, which senses the fingerprint pressed in the fingerprint receiving area, and converts the optical signal into an electrical signal by the light sensing element, so as to distinguish the characteristics of the fingerprint, especially the light sensing element formed by the thin film transistor It is integrated on the thin film transistor substrate, which simplifies the process and reduces the module size, but provides a large fingerprint touch area. In addition, since the directional light can be adjusted by a specific optical structure before entering the light sensing element, the influence of direct light or strong light of the environment can be minimized in the case of general use to ensure The accuracy of fingerprint identification. In actual use, the in-screen optical fingerprint recognition light-emitting diode panel disclosed in the present invention can be applied to various screen-equipped devices such as mobile devices, screens, televisions, etc., since the LED array of the present invention has considerable size. The fingerprint receiving area allows the user to easily identify the fingerprint without being too deliberate. Whether it is a wake-up device or identity identification, the user's fingerprint protection is enhanced by the convenience of use. The function and the conventional method of setting the fingerprint identification on the side surface or the back surface of the device, the LED backlight panel provided by the present invention can enable the fingerprint protection mechanism to exert its function.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, any change or modification of the characteristics and spirit described in the scope of this application shall be included in the scope of the patent application for this creation.

1a, 1b, 1c, 1d, 1e, 1f, 1g‧ ‧ ‧ optical fingerprinting of the thin film transistor panel
12‧‧‧Light guide substrate
122‧‧‧ Fingerprint receiving area
124‧‧‧Signal introduction area
126‧‧‧ Signal export area
14‧‧‧Color filter substrate
16‧‧‧Film Optoelectronic Substrate
18‧‧‧Light sensing components
22‧‧‧Slope
24‧‧‧First optical structure
26‧‧‧Second optical structure
28a, 28b‧‧‧ Reflective surface
32‧‧‧Main display area
34‧‧‧ display areas
FG‧‧ fingers
LS‧‧‧ light source
BL, BL1, BL2‧‧‧ backlight module
PF1, PF2‧‧‧ polarizing substrate

FIG. 1 is a schematic cross-sectional view showing the structure of a thin film transistor panel for optical fingerprinting in the screen disclosed in the present application. FIG. 2 is a schematic cross-sectional view showing another structure of a thin film transistor panel for optical fingerprinting in the screen disclosed in the present disclosure. Fig. 3a is a schematic cross-sectional view showing the structure of a thin film transistor panel for in-screen optical fingerprint recognition. FIG. 3b is a schematic cross-sectional view showing the structure of a thin film transistor panel for in-screen optical fingerprint recognition. Fig. 4a is a schematic cross-sectional view showing the structure of a thin film transistor panel for optical fingerprinting in the screen. Figure 4b is a schematic cross-sectional view showing the structure of a thin film transistor panel for optical fingerprinting in the screen. FIG. 5 is a schematic cross-sectional view showing the structure of a thin film transistor panel for optical fingerprinting in the screen.

Claims (32)

A thin film transistor panel for in-screen optical fingerprinting is assembled in a backlight module and has a main display area and a primary display area. The optical crystal fingerprint panel of the screen provides a finger for fingerprint recognition and includes: a light source providing a directional light; a light guiding substrate having at least one fingerprint receiving area, a signal lead-in area and a signal lead-out area, the fingerprint receiving area providing the finger for effective pressing, the pointing from the light source The light from the signal introduction area enters the light guide substrate and is totally reflected therein, and generates an optical signal when the finger is pressed against the fingerprint receiving area, and leaves the light guide substrate from the signal lead-out area; a filter substrate disposed under the light guide substrate; a thin film transistor substrate disposed under the color filter substrate; and a light sensing element substantially disposed on the light of the directional light exiting the light guide substrate In the path, the light sensing component is coupled to at least one of the color filter substrate and the thin film transistor substrate, After receiving the sensing element away from the optical signal of the light guide substrate, converts the optical signal to an electrical signal to recognize a fingerprint characteristic of the finger. The thin film transistor panel for optical fingerprinting in the screen according to claim 1, wherein the light source and the backlight module are independent light source structures. The thin film transistor panel of the in-screen optical fingerprinting of claim 2, wherein the light source is disposed under the light guiding substrate, and at least part of the light source does not overlap the color filter substrate in a right projection direction The thin film transistor substrate is at least one of them. The in-screen optical fingerprinting thin film transistor panel of claim 2, wherein the light source is a collimated light source. The in-screen optical fingerprinting thin film transistor panel of claim 2, wherein the light source is a non-collimated light source. The thin film transistor panel of the in-screen optical fingerprinting of claim 2, wherein the light source is correspondingly disposed in the main display area but is closer to the sub-display area, or correspondingly located in the sub-display area, or correspondingly Located outside the display area. The thin film transistor panel of the in-screen optical fingerprinting of claim 2, wherein at least one first optical structure is disposed between the light source and the light guiding substrate, and the directional light provided by the light source passes through the first optical The structure is followed by a straight entrance into the signal lead-in area of the light guiding substrate. The in-screen optical fingerprinting thin film transistor panel of claim 7, wherein the first optical structure is selected from the group consisting of an optical element, a secondary element, an optical microstructure, and combinations thereof. The in-screen optical fingerprinting thin film transistor panel of claim 7, wherein the first optical structure is an independent structure. The in-screen optical fingerprinting thin film transistor panel of claim 7, wherein the first optical structure is integrated with the light source or the light guiding substrate. The thin film transistor panel of the in-screen optical fingerprinting of claim 1, wherein at least part of the backlight module is used to provide the directional light, and the remaining backlight module is used to provide a display backlight. The thin film transistor panel of the in-screen optical fingerprinting of claim 11, wherein the backlight module that provides the directional light is a collimated light source. The thin film transistor panel of the in-screen optical fingerprinting of claim 11, wherein the backlight module that provides the directional light is a non-collimated light source. The thin film transistor panel of the in-screen optical fingerprinting of claim 11, wherein the backlight module for providing the locality of the directivity light has the same illumination angle as the remaining backlight module providing the display backlight . The thin film transistor panel of the in-screen optical fingerprinting of claim 11, wherein the backlight module for providing the locality of the directivity light has a different illumination angle from the remaining backlight module providing the display backlight . The thin film transistor panel of the in-screen optical fingerprinting of claim 11, wherein the backlight module and the light guiding substrate for providing the directivity light are selectively provided with at least one The two optical structures, the partial illuminating light provided by the backlight module passes through the second optical structure and collimates into the signal introduction area of the light guiding substrate. The thin film transistor panel of the in-screen optical fingerprinting of claim 11, wherein the backlight module for providing the locality of the directional light is correspondingly disposed in the main display area but is closer to the sub display area. Or correspondingly located in the secondary display area, or correspondingly outside the secondary display area. The in-screen optical fingerprinting thin film transistor panel of claim 17, wherein the second optical structure is selected from the group consisting of an optical element, a secondary element, an optical microstructure, and combinations thereof. The in-screen optical fingerprinting thin film transistor panel of claim 17, wherein the second optical structure is an independent structure. The in-screen optical fingerprinting thin film transistor panel of claim 17, wherein the second optical structure is integrated into at least one of the color filter substrate, the light guide substrate, and the light guide substrate. The thin film transistor panel of the in-screen optical fingerprinting of claim 1, wherein the fingerprint receiving area is all or a partial area of the light guiding substrate. The thin film transistor panel of the in-screen optical fingerprinting of claim 1, wherein the signal lead-in area and the signal lead-out area are in the form of a mirror surface, a germanium film, a grating or an optical fiber. The thin film transistor panel of the in-screen optical fingerprinting method of claim 1, wherein a polarizing substrate is interposed between the light guiding substrate and the color filter substrate, or the light guiding substrate is further integrated on the polarizing substrate. . The thin film transistor panel of the in-screen optical fingerprinting of claim 1, wherein the light sensing component is independently disposed and located above the color filter substrate, and the light sensing component is coupled to the color filter A substrate or the thin film transistor substrate. The thin film transistor panel of the in-screen optical fingerprinting of claim 1, wherein the light sensing component is independently disposed between the color filter substrate and the thin film transistor substrate, and the light sensing component is coupled Connected to the color filter substrate or the thin film transistor substrate. The thin film transistor panel of the in-screen optical fingerprinting of claim 1, wherein the light sensing component is integrated on the thin film transistor substrate. The in-screen optical fingerprinting thin film transistor panel of claim 26, wherein the light sensing component is a thin film transistor. The thin film transistor panel of the in-screen optical fingerprinting of claim 1, wherein a signal amplifying component is further disposed between the light guiding substrate and the light sensing component. The in-screen optical fingerprinting thin film transistor panel of claim 28, wherein the signal amplifying component is selected from the group consisting of an optical component, an optical microstructure, and combinations thereof. The thin film transistor panel of the in-screen optical fingerprinting of claim 28, wherein the signal amplifying component is further integrated into the light guiding substrate and the color filter substrate. The in-screen optical fingerprinting thin film transistor panel of claim 1, wherein the optical signal and the electrical signal are further operated by an optical processor to recognize the fingerprint feature of the finger. The thin film transistor panel of the in-screen optical fingerprinting of claim 31, wherein the optical processor is further integrated into a display processor of the optical fingerprinting thin film transistor panel of the screen, which can be integrated into one touch Control processor.