A display panel and a method for manufacturing the same, and a display device

Abstract

The present disclosure provides a display panel and a preparation method thereof, a display device, the liquid crystal display panel includes: a substrate substrate, the surface of which is divided into a plurality of pixel areas, all pixel areas are divided into a camera area and a display area; the camera area includes: a filter structure and a photosensitive structure; the filter structure is used to convert the external ambient light into monochromatic light; the photosensitive structure is used to convert the monochromatic light into an electrical signal for output when receiving a driving voltage, the photosensitive structure includes an input pin and an output pin, the input pin is connected to the control circuit through a first signal line, the output pin is connected to the control circuit through a second signal line, and the electrical signal is transmitted to the control circuit, so that the control circuit decodes the electrical signal to form a captured image; a packaging structure located on the side of the filter structure and the photosensitive structure away from the substrate substrate. The present disclosure realizes the integration of the camera function in the display panel, so that the display device can truly achieve the effect of full-screen display, and improve the user experience.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a method for preparing the same, and a display device. Background Art

[0002] As display technology gradually develops, the number of display devices with built-in cameras is increasing. From smart phones to tablets and even TVs, cameras can be set up to achieve functions such as video calls and remote conferences. For TV products with larger screen sizes, there are two main ways to set up the camera. The first is an external camera, which connects a separately purchased camera to the TV body through an interface, and controls the camera by installing a driver in the TV, which increases the purchase cost for users; the second is to set the camera on the upper part of the front frame of the screen, and the display panel is set in the middle of the front frame of the screen. The display panel cannot be set in the upper part of the front frame where the camera is set, which increases the border width of the product and cannot achieve the effect of full-screen display. Summary of the invention

[0003] The purpose of the embodiments of the present disclosure is to provide a display panel and a method for manufacturing the same, and a display device, so as to solve the problem in the prior art that the cost of implementing the camera function increases or the display device cannot achieve a full-screen display effect.

[0004] The embodiment of the present disclosure adopts the following technical scheme: a display panel, comprising: a substrate, the surface of the substrate is divided into a plurality of pixel areas arranged in an array, all of the pixel areas are divided into a camera area and a display area; the camera area at least includes: a filter structure and a photosensitive structure; the filter structure is used to convert external ambient light into monochromatic light; the photosensitive structure is used to convert the monochromatic light into an electrical signal for output when receiving a driving voltage, the photosensitive structure at least includes an input pin and an output pin, the input pin is connected to the control circuit through a first signal line to receive the driving voltage output by the control IC, the output pin is connected to the control IC through a second signal line, and transmits the electrical signal to the control IC, so that the control IC decodes the electrical signal to form a captured image; a packaging structure located on the side of the filter structure and the photosensitive structure away from the substrate.

[0005] In some embodiments, when the control IC receives a shooting instruction, the control IC outputs the driving voltage and controls the liquid crystal unit in the camera area to be fully turned on.

[0006] In some embodiments, the display area at least includes: a thin film transistor array layer located on the surface of the base substrate, the thin film transistor array layer includes multiple driving circuits; the driving circuit includes at least an active layer, a gate metal layer and a data metal layer; the thin film transistor array layer is also provided with a cross-arranged gate line group and a data line group, the gate line group is connected to the gate metal layer of the driving circuit, and the data line group is connected to the data metal layer of the driving circuit; a color resist layer located on the side of the thin film transistor array layer away from the base substrate.

[0007] In some embodiments, the first signal line and the second signal line are disposed in the same layer as the thin film transistor array layer; wherein the first signal line is disposed in the same layer as the gate line group, and the second signal line is disposed in the same layer as the data line group.

[0008] In some embodiments, the filter structure is a color separation filter, and the color separation filter and the color resistance layer are prepared simultaneously.

[0009] In some embodiments, the color separation filter has a thickness between 1.5 microns and 2.3 microns.

[0010] In some embodiments, the packaging structure is a lens structure.

[0011] In some embodiments, the thickness of the lens structure is between 3500 angstroms and 8000 angstroms.

[0012] In some embodiments, the surface of the substrate in the imaging area is covered with a light shielding layer.

[0013] The embodiment of the present disclosure also provides a method for preparing a display panel, comprising: dividing a side surface of a substrate into a plurality of pixel areas arranged in an array, wherein all the pixel areas are divided into an imaging area and a display area; preparing a thin film transistor array layer on the surface of the substrate in the display area, and preparing a first signal line and a second signal line on the surface of the substrate in the imaging area; preparing a photosensitive structure in the imaging area on the surface of a silicon wafer; transferring the photosensitive structure to the surface of the substrate in the imaging area so that an input pin of the photosensitive structure is overlapped with the first signal line, and an output pin of the photosensitive structure is overlapped with the second signal line; preparing a color resist layer on a side of the thin film transistor array layer away from the substrate, and simultaneously preparing a filter structure on the surface of the substrate in the imaging area; preparing a packaging structure on a side of the photosensitive structure and the filter structure away from the substrate; and preparing a liquid crystal layer on a side of the color resist layer away from the thin film transistor array layer and on a side of the packaging structure away from the photosensitive structure.

[0014] The embodiment of the present disclosure further provides a display device, characterized in that it at least includes the liquid crystal display panel as described above.

[0015] The beneficial effects of the disclosed embodiments are as follows: a part of the pixel area of ​​the display panel is divided into a camera area, a photosensitive structure and a filter structure are arranged in the camera area, the external ambient light is converted into monochromatic light by the filter structure, the photosensitive structure forms an electrical signal based on the monochromatic light, and after transmitting it to the control circuit through the second data line, the control circuit realizes resolution with the electrical signal to obtain a captured image, thereby integrating the camera function into the display panel without the need to purchase or separately set up an independent camera, so that the device using the display panel of this embodiment can truly achieve a full-screen display effect, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 is a schematic diagram of a top view of the structure of a display panel in the first embodiment of the present disclosure;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the imaging area in the first embodiment of the present disclosure;

[0019] Figure 3 It is a schematic diagram of the hierarchical structure of the photodiode in the first embodiment of the present disclosure;

[0020] Figure 4 This is a schematic diagram of the silicon base layer arrangement in the first embodiment of the present disclosure;

[0021] Figure 5 It is a schematic diagram of the arrangement of the color filter and the color separation filter of the display panel in the first embodiment of the present disclosure;

[0022] Figure 6 4 is a flow chart of a method for preparing a display panel in the second embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] Various aspects and features of the present disclosure are described herein with reference to the drawings.

[0024] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0026] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the attached drawings.

[0027] It should also be understood that, although the present disclosure has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the features of the claims and are therefore within the scope of protection defined thereby.

[0028] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0029] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments claimed are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0030] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0031] As the display industry grows and develops, electronic products have become an indispensable part of life, such as mobile phone products, PAD products, TV product displays, etc. As display technology and new technologies continue to improve, users have incomparable requirements for product performance. Especially with the development of current digital information technology, users' pursuit of high-end display products such as high refresh rate and high resolution has only increased. 4K display products have been basically popularized, and 8K product technology has gradually expanded. For current mobile phone products, laptops, Pads, TVs, etc., the display parts that users can see include the display screen and the camera. The camera is installed on the upper part of the front frame, and the display screen is in the middle of the front frame. This results in the upper part with the camera not being able to set the display screen, and only the middle part has a display effect, which affects the user experience. This problem needs to be solved urgently.

[0032] There are two main technical solutions for integrating camera technology into existing ultra-high-definition 8K display products (TV, advertising machines, and laser TVs): (1) To achieve multi-functionality, the camera device must be purchased separately and the driver must be installed in the display device, which increases costs; (2) The camera is installed on the upper part of the front frame of the screen, and the display screen is set in the middle of the front frame. The display screen cannot be set in the corresponding camera position, which increases the border when the user views from the front, affecting the full-screen display effect and failing to achieve a true full-screen display function.

[0033] In order to solve the above problems, the first embodiment of the present disclosure provides a display panel, which divides part of the pixel area of ​​the display panel into a camera area, sets a photosensitive structure and a filter structure in the camera area, converts the external ambient light into monochromatic light through the filter structure, and makes the photosensitive structure form an electrical signal based on the monochromatic light, which is transmitted to the control circuit through the second data line so that the control circuit can realize the resolution with the electrical signal to obtain the captured image, so as to integrate the camera function into the display panel, without the need to purchase or set up an independent camera separately, so that the device using the display panel of this embodiment can truly achieve the effect of full-screen display, thereby improving the user experience. It should be noted that the display panel provided in this embodiment can mainly refer to a liquid crystal display panel (TFT-LCD), and of course it can also be an organic light emitting diode (OLED) display panel or other types of display panels.

[0034] Figure 1 FIG. 2 shows a schematic diagram of a top view of the structure of the liquid crystal display panel in this embodiment. Figure 1As shown, the surface of the substrate 1 is divided into a plurality of pixel areas arranged in an array, and these pixel areas are divided into a camera area 10 and a display area 20 according to their functions. The camera area 10 mainly collects and converts ambient light by setting a photosensitive structure, so that the control circuit analyzes the captured image based on the converted electrical signal, and the display area 20 is provided with the relevant structure of a conventional liquid crystal drive circuit, and the picture display can be realized under the drive of the control circuit. Corresponding to the different functions of the camera area 10 and the display area 20 and the actual shooting requirements, when dividing the number and position of the camera area 10 and the display area 20 on the surface of the base substrate 1, the camera area 10 can be set in a targeted manner. For example, the camera area 10 can generally be set at the center of the display panel to facilitate forward and large-angle shooting. It can also be set in one of the corners of the display panel or any position in the panel according to user needs. The number of camera areas 10 is usually between 10 and 100. The more camera areas 10 there are, the better the shooting effect. However, since the picture cannot be displayed in the camera area 10, the setting of too many camera areas 10 will cause the aperture ratio of the display panel to decrease. Therefore, the number of camera areas 10 can be set according to the resolution requirements of the display panel and the shooting requirements, so as to ensure a larger aperture ratio as much as possible while satisfying the shooting effect.

[0035] Except for a certain number of camera areas 10, the other pixel areas are all display areas 20. It should be noted that Figure 1 The schematic diagram of the liquid crystal display panel shown only shows four imaging areas 10, and the number of display areas 20 is not shown in full according to the actual situation. It is only a schematic diagram for indicating the positional relationship and arrangement of the imaging areas 10 and the display areas 20. In addition, a liquid crystal layer ( Figure 1 The liquid crystal layer includes at least a plurality of liquid crystal units corresponding to the plurality of pixel regions, and the liquid crystal units can be flipped under the control of electrodes to allow light to pass in or out.

[0036] Figure 2 FIG. 4 shows a schematic diagram of the cross-sectional structure of the imaging area 10. Figure 2 As shown, in this embodiment, a filter structure 11 and a photosensitive structure 12 are correspondingly arranged on the surface of the substrate 1 corresponding to the camera area 10, wherein the filter structure 11 is mainly used to convert the ambient light incident on the current camera area 10 into monochromatic light; and the photosensitive structure 12 receives the monochromatic light converted by the filter structure 11 and converts it into an electrical signal for output when receiving a driving voltage, so as to collect the ambient light based on the photoelectric conversion, so that the control circuit 3 performs image resolution based on the electrical signal to obtain the captured image. Specifically, Figure 1 The photosensitive structure 12 (eg Figure 1 The arrangement diagram of the Figure 1 The filter structure 11 is not shown in the figure, and its structure includes at least an input pin and an output pin, and at least a first signal line 121 and a second signal line 122 are arranged on the substrate 1. The input pin of the photosensitive structure 12 is connected to the control circuit 3 through the first signal line 121, which is used to transmit the driving voltage input by the control circuit 3 to the photosensitive structure 12 when shooting is required. The photosensitive structure 12 enters the working state according to the driving voltage to realize the sensing and conversion of external light; the output pin of the photosensitive structure 12 is connected to the control circuit 3 through the second signal line 122, and the electrical signal output by the photosensitive structure 12 is transmitted to the control circuit 3, so that the control circuit 3 performs the resolution operation. It should be understood that the control circuit 3 mainly includes a PCB circuit board, a chip-on-film COF, and a control chip for signal processing, which is generally arranged in the peripheral area at the edge of the display panel, and is mainly used for photoelectric signal processing and display panel control.

[0037] A packaging structure 13 is also provided on the side of the filter structure 11 and the photosensitive structure 12 away from the substrate 1, and a sealing glue ( Figure 2 The solid black area in the middle) is used to encapsulate the filter structure 11 and the photosensitive structure 12 in the camera area 10. Among them, the encapsulation structure 13 can be made of a hard and transparent material, such as glass, so as to facilitate the filter structure 11 to convert light; in actual use, a lens can also be used as the encapsulation structure 13 to achieve a focusing effect when shooting, and at the same time amplify the shooting angle, and increase the photosensitive area to make the light entering the camera area 10 clearer, so as to achieve a better shooting effect. The thickness of the lens can be controlled according to the camera effect, and its thickness can generally be controlled between 3500 angstroms and 8000 angstroms. It should be noted that when the camera area 10 is actually set, the lens is set based on an overall area formed by all camera areas 10, for example Figure 1 In the 2*2 camera area array shown, only one lens covering the 2*2 array area is required, so as to achieve light concentration and avoid the situation where a separate lens is set for each camera area 10, where the light processed by the current lens affects other adjacent areas.

[0038] Similar to the conventional structure, a thin film transistor (TFT) array layer may be provided in the display area 20, and a plurality of driving circuits 21 arranged in an array may be provided in the layer, such as Figure 1As shown, each driving circuit 21 corresponds to a liquid crystal unit of a display area 20, realizing the flipping of the corresponding liquid crystal unit to achieve the purpose of picture display; at the same time, the liquid crystal display panel provided in this embodiment is also provided with a color resistance layer on the side of the thin film transistor array layer away from the base substrate 1, that is, the liquid crystal display panel provided in this embodiment uses the COA technology of making the CF layer on the TFT array layer, and provides a larger aperture ratio and transmittance of the display area through the adjustment of the hierarchical structure, so as to achieve a higher definition display effect. Specifically, the color resistance layer is mainly composed of a plurality of color filters CF, and each display area 20 corresponds to a color filter. The colors of the color filters arranged between adjacent display areas 20 are different, so as to achieve the purpose of color display by giving color to the white light emitted by the light source.

[0039] Furthermore, the driving circuit 21 at least includes an active layer, a gate metal layer and a data metal layer, the data metal layer can also be divided into a source and a drain, the active layer is turned on based on the voltage applied to the gate metal layer, so that the source and the drain are connected to form a signal transmission; the thin film transistor array layer is also provided with a staggered gate line group 22 and a data line group 23, the gate line group 22 includes a plurality of parallel gate lines 221, each gate line 221 is simultaneously connected to the gate metal layers of all driving circuits 21 in the same row (or the same column) adjacent to it, and the gate lines 221 are ... The data line group 23 also includes a plurality of parallel data lines 231, and each set of data lines 231 is connected to the data metal layer (mainly one of the source or drain) of all the drive lines 21 in the same column (or row) adjacent to it, and is also connected to the control circuit, so that when the drive circuit 21 is turned on, the signal output by the control circuit is transmitted to the drive circuit 21 to control the deflection degree of the liquid crystal unit, so as to present different display contents. Alternatively, in order to achieve a narrow frame effect, the gate line group 22 can also be connected to a cascaded gate drive circuit to realize array substrate row drive technology (GOA).

[0040] When the liquid crystal display panel provided in the present embodiment needs to display a picture, the control circuit 3 outputs an on signal to the gate line group 22 to turn on the driving circuit 21, and then inputs a signal to the data metal layer of the driving circuit 21 through the data line group 23 to control the liquid crystal unit; when the liquid crystal display panel needs to shoot, the control circuit 3 receives a shooting instruction, and then sends a driving voltage to the photosensitive structure 12 through the first signal line 121 to put it into a working state, and at the same time controls the liquid crystal unit corresponding to the camera area 10 to be fully turned on, so that the external ambient light passes through the liquid crystal layer and enters the camera area 10. After the filter structure 11 converts the ambient light into monochromatic light, the photosensitive structure 12 forms an electrical signal based on the monochromatic light, which is transmitted to the control circuit 3 through the second signal line 122. After receiving the electrical signals output by the photosensitive structures 12 in all the camera areas 10, the control circuit 3 integrates and resolves the signals, and finally obtains the captured image, so that the camera function is integrated in the display panel without the need to purchase or set up an independent camera separately, so that the device using the display panel of the present embodiment can truly achieve the effect of full-screen display, thereby improving the user experience.

[0041] In actual manufacturing, the photosensitive structure 12 mainly refers to a photosensitive diode, and its structural diagram is shown in FIG. Figure 3As shown, it mainly includes a silicon-based layer 201, an N-type semiconductor layer 202, a P-type semiconductor layer 203, an ITO layer 204 and a packaging layer 205 arranged in sequence on a substrate 1, and a first via hole 2051 and a second via hole 2052 are etched on the packaging layer 205, wherein the first via hole 2051 penetrates the N-type semiconductor layer 202, the P-type semiconductor layer 203, the ITO layer 204 and the packaging layer 205, so that the silicon-based layer 201 is exposed at the bottom of the first via hole 2051, and the second via hole 2052 is only The encapsulation layer 205 is penetrated to expose the ITO layer 204 at the bottom of the second via 2052; at the same time, the photosensitive structure 12 also includes an input pin 2061 and an output pin 2062, so that the input pin 2061 is connected to the silicon base layer 201 via the first via 2051, and drives the photosensitive diode to enter the working state when receiving the driving voltage, and the output pin 2062 is connected to the ITO layer 204 via the second via 2052, and outputs an electrical signal to the control circuit 3 through the second signal line 122 to complete the photoelectric conversion. The photosensitive structure 12 can be directly manufactured on the substrate 1 by deposition, photolithography, etc., but with the requirements of large-size and high-resolution display, the success rate of directly manufacturing photosensitive diodes on the substrate is low. Therefore, in this embodiment, the transfer technology can be used to first prepare the corresponding photosensitive diodes according to the position and number of the camera area 10 on a flat and clear silicon wafer according to the production process of the photosensitive diodes, and then the transfer technology uses an elastic stamp combined with a high-precision motion control print head to selectively pick up the photosensitive diodes and transfer them to the corresponding positions of the substrate, so that the input pin 2061 and the output pin 2062 of the photosensitive diode are respectively overlapped with the first signal line 121 and the second signal line 122 that have been prepared on the substrate 1 to form a connection effect. Through the transfer technology, the preparation success rate of the photosensitive structure can be effectively improved, and the camera function of the camera area 10 can be ensured.

[0042] In some embodiments, the first signal line 121 and the second signal line 122 can be arranged in the same layer as the thin film transistor array layer in the display area 20. When depositing and manufacturing each metal layer, the corresponding first signal line 121 and the second signal line 122 can be deposited simultaneously, so that the first signal line 121 is arranged in the same layer as the gate line group 22, and the second signal line 122 is arranged in the same layer as the data line group 23. Figure 1As shown, the first signal line 121 and the second signal line 122 can not only pass through the camera area 10, but also pass through the display area 20 in the same row or column at the same time, so that the projection of the first signal line 121 on the substrate 1 is parallel to the projection of the data line 231, and the projection of the second signal line 122 on the substrate 1 is parallel to the projection of the gate line 221, so that the first signal line 121 and the second signal line 122 are convenient to connect with the input pin and the output pin of the photosensitive structure 12 in the camera area 10, and all the first signal lines 121 can be connected or all the second signal lines 122 can be connected to the control circuit 3 through the lead at the edge of the display panel, so as to effectively realize the specification of the display panel wiring under the premise of ensuring the complete function. It should be noted that in the actual preparation process of the signal line, the gate metal layer, the data metal layer, the gate line group and the data line group, it should be ensured that there are inter-layer position differences between the layers to avoid mutual interference or cross-circuiting between the signals, and the hierarchical relationship of each line when setting is not limited to one setting method, as long as it can ensure that the corresponding function can be achieved. At the same time, the spacing between each line layer can also be set according to safety regulations and the degree of signal interference, which is not described in detail in this embodiment.

[0043] It should be noted that, in the actual process of preparing the signal line and the TFT array, due to the certain thickness of the metal layer and the interlayer insulating layer, there is also a certain thickness between the signal line and the surface of the substrate during the preparation process. For the camera area 10, a silicon base layer with a thickness similar to that of the TFT array layer can be prepared on the surface of the substrate at the corresponding position, and holes for placing photodiodes can be opened on the surface of the silicon base layer, such as Figure 4 As shown, the transported photodiode is embedded in the hole during the process of being arranged in the imaging area 10, and the input pin 2061 and the output pin 2062 located on the top of the photodiode are overlapped with the prepared signal line to achieve electrical connection.

[0044] In some embodiments, the filter structure 11 can be implemented using a dichroic filter, which can be consistent with the color filter used in the color blocking layer in the display area 20. Combined with the structure in which the color blocking layer is directly set on the TFT array layer, the same mask plate and the same preparation material can be used to prepare the color blocking layer and the dichroic filter at the same time when preparing the color blocking layer. In this embodiment, the difference between the dichroic filter and the color blocking layer is that the color filter of the color blocking layer is used to convert the white light emitted by the backlight source into colored light and then present it on the display panel, while the thickness of the dichroic filter is different from that of the color filter, generally between 1.5 microns and 2.3 microns. The refractive index of the dichroic filter changes due to the inconsistent thickness, and the external light is converted into RGB monochromatic light or CMYK monochromatic light. After the photosensitive diode senses the filtered monochromatic light, the sensed light signal is converted into an electrical signal, which is transmitted to the control circuit 3 to obtain a captured image signal. When the color blocking layer and the filter structure 11 are actually prepared, the same mask plate and the same preparation material can be used to achieve the difference in thickness between the dichroic filter and the color filter by changing the deposition rate, thereby achieving the different functions of the dichroic filter and the color filter. The relationship between the specific thickness and the refractive index of the dichroic filter can be simulated based on the design software, and will not be described in detail in this embodiment.

[0045] Figure 5 FIG. 2 shows a schematic diagram of the arrangement of the color filter and the color separation filter of the liquid crystal display panel of this embodiment. Figure 5 As shown, the letter R marked in each pixel area in the figure is used to indicate that the color filter or color separation filter arranged in the current area corresponds to a red filter, and correspondingly, the letter G represents a green filter, and the letter B represents a blue filter. Figure 5 The pixel area framed by the dotted line is the camera area 10, and the remaining pixel areas are the display area 20. The color setting of the color filter in the display area 20 can be set according to the actual display requirements and resolution limitations. Figure 5 The setting method in the figure is only a schematic diagram; and for the color separation filters in the imaging area 10, generally, the number of color separation filters of different colors set should be the same, for example, Figure 5 There are a total of 6 camera areas 10, two of which are provided with red filters, the other two are provided with green filters, and the last two are provided with blue filters to ensure the color balance between the captured images. Of course, the number of corresponding monochrome filters can be increased according to the required effect. For example, when 3D display is desired, the number of red and blue filters can be increased accordingly.

[0046] It should be noted that the liquid crystal display panel provided in this embodiment, in addition to the hierarchical structure disclosed in the foregoing text, should also include a lower polarizer, an upper polarizer, a frame sealant around the liquid crystal layer, an upper substrate, a light guide plate, a backlight source and other hierarchical structures to achieve the normal display function of the liquid crystal display panel. At this time, in order to prevent the backlight from affecting the photoelectric conversion effect of the photosensitive structure 12, this embodiment does not set the grid points for achieving light guidance at the position of the light guide plate corresponding to the camera area 10, and at the same time covers the surface of the base substrate 1 in the camera area 10 with a light shielding layer to enhance the light shielding effect. In actual implementation, the light shielding layer can be directly prepared using the gate metal material when preparing the gate metal layer, and can be etched using the same mask plate.

[0047] The second embodiment of the present disclosure provides a method for preparing a liquid crystal display panel as provided in the first embodiment, and its flow chart is as follows: Figure 6 As shown, it mainly includes steps S10 to S70:

[0048] S10, dividing a surface of one side of the substrate into a plurality of pixel areas arranged in an array, wherein all pixel areas are divided into a camera area and a display area; wherein the camera area is mainly used for realizing a shooting function, and the display area is used for displaying a picture, and the specific position and number of the camera area can be adjusted according to demand;

[0049] S20, preparing a thin film transistor array layer on the surface of the base substrate in the display area, and preparing a first signal line and a second signal line on the surface of the base substrate in the imaging area; specifically, the TFT array layer and the first signal line and the second signal line can be prepared at the same time, ensuring that the deposition of the signal line is completed before the photosensitive structure is transferred;

[0050] S30, preparing a photosensitive structure of the imaging area on the surface of the silicon wafer; the specific preparation method can directly use the commonly used photosensitive diode preparation process, and the number and size of the preparation can be adjusted according to the resolution of the display panel, the size of the imaging area, and the position and number of the imaging area to ensure the transfer effect of the subsequent step S40;

[0051] S40, transferring the photosensitive structure to the surface of the substrate of the imaging area, so that the input pin of the photosensitive structure is overlapped with the first signal line, and the output pin of the photosensitive structure is overlapped with the second signal line; specifically, when preparing the photosensitive structure, a metal pin is provided for connecting the signal line, and after the photosensitive element is placed at the corresponding position, the extended pin can be directly connected to the signal line to achieve signal connectivity;

[0052] S50, preparing a color resist layer on a side of the thin film transistor array layer away from the base substrate, and simultaneously preparing a filter structure on the surface of the base substrate in the imaging area; the filter structure is mainly a color filter, and its preparation material is the same as that of the color filter of the color resist layer. In actual preparation, different deposition rates are used to make the thickness of the color filter different from that of the color filter, thereby ensuring that the functions realized by the color filter and the color filter are different;

[0053] S60, preparing a packaging structure on a side of the photosensitive structure and the filter structure away from the substrate; the packaging structure may be a transparent glass structure or a lens structure;

[0054] S70, prepare a liquid crystal layer on the side of the color resist layer away from the thin film transistor array layer and on the side of the packaging structure away from the photosensitive structure; based on the basic functions and implementation principles of the liquid crystal display panel, a backlight source, a light guide plate, upper and lower polarizers and other hierarchical structures can be set accordingly. The corresponding preparation method can directly use the method in the prior art, which is not described in detail in this embodiment.

[0055] In this embodiment, the signal line is prepared at the same time as the TFT array layer is prepared, and then the photosensitive structure is placed and connected to the signal line based on the transfer technology. This improves the success rate of the photosensitive structure preparation and is more conducive to the structural setting in the high-resolution pixel area, thereby integrating the camera function into the display panel without the need to purchase or set up an independent camera separately, so that the device using the display panel of this embodiment can truly achieve a full-screen display effect, thereby improving the user experience.

[0056] It should be noted that the preparation process of the photosensitive structure disclosed in step S30 is produced on a silicon wafer independent of the substrate, so it can be completed before, after or during the execution of step S10 or step S20, as long as the preparation is completed before the execution of S40.

[0057] The third embodiment of the present disclosure provides a display device, and the display panel used in the display device is the liquid crystal display panel provided by the first embodiment of the present disclosure, which is generally used in display devices such as televisions and computers with high resolution and large size. By utilizing the design of photosensitive structure and filtering structure, the shooting function is directly integrated into the liquid crystal display panel, and there is no need to purchase or set up an independent camera separately, so that the display device truly achieves the effect of a borderless screen, effectively improving the user's viewing effect of the display device screen, and providing a better viewing experience.

[0058] Multiple embodiments of the present disclosure are described in detail above, but the present disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concepts of the present disclosure, and these variations and modifications should all fall within the scope of protection required by the present disclosure.

Claims

1. A display panel, characterized in that: include: A substrate, wherein a surface of the substrate is divided into a plurality of pixel areas arranged in an array, and all the pixel areas are divided into an imaging area and a display area; The display area at least includes: A thin film transistor array layer located on the surface of the substrate, a color resist layer located on the side of the thin film transistor array layer away from the substrate, a cross-arranged gate line group and a data line group are also arranged in the thin film transistor array layer, the gate line group is connected to the gate metal layer of the driving circuit and is also connected to the control circuit, and the data line group is connected to the data metal layer of the driving circuit and is also connected to the control circuit; When the screen needs to be displayed, the control circuit outputs an on signal to the gate line group to turn on the drive circuit, transmits the signal output by the control circuit to the drive circuit, and then inputs the signal to the data metal layer of the drive circuit through the data line group; The camera area at least includes: A light filtering structure and a light sensing structure are correspondingly arranged on the surface of the corresponding substrate, and the surface of the substrate is covered with a light shielding layer; The filter structure is used to convert external ambient light into monochromatic light; The photosensitive structure is used to convert the monochromatic light into an electrical signal for output when receiving a driving voltage. The photosensitive structure includes at least an input pin and an output pin. The input pin is connected to the control circuit through a first signal line to receive the driving voltage output by the control circuit. The output pin is connected to the control circuit through a second signal line and transmits the electrical signal to the control circuit so that the control circuit decodes the electrical signal to form a captured image. The camera function is integrated in the display panel without the need to set up an independent camera. The first signal line and the second signal line are arranged in the same layer as the thin film transistor array layer; the first signal line is arranged in the same layer as the gate line group, and the second signal line is arranged in the same layer as the data line group; No dots are set for light guiding at the position of the light guide plate corresponding to the camera area; The packaging structure is located on a side of the filter structure and the photosensitive structure away from the substrate, and the packaging structure is a lens structure.

2. The display panel according to claim 1, characterized in that: When the control circuit receives a shooting instruction, the control circuit outputs the driving voltage and controls the liquid crystal unit in the imaging area to be fully turned on.

3. The display panel according to claim 1, characterized in that: The thin film transistor array layer includes a plurality of driving circuits; the driving circuits at least include an active layer, a gate metal layer and a data metal layer.

4. The display panel according to claim 3, characterized in that: The filter structure is a color separation filter, and the color separation filter and the color resistance layer are prepared at the same time.

5. The display panel according to claim 4, characterized in that: The thickness of the color separation filter is between 1.5 microns and 2.3 microns.

6. The display panel according to claim 1, characterized in that: The thickness of the lens structure is between 3500 angstroms and 8000 angstroms.

7. A method for preparing a display panel, characterized in that: include: Dividing a surface of one side of the substrate into a plurality of pixel areas arranged in an array, wherein all the pixel areas are divided into an imaging area and a display area; A thin film transistor array layer is prepared on the surface of the substrate in the display area, wherein a gate line group and a data line group are arranged crosswise in the thin film transistor array layer, wherein the gate line group is connected to the gate metal layer of the driving circuit and is also connected to the control circuit, and the data line group is connected to the data metal layer of the driving circuit and is also connected to the control circuit; When the screen needs to be displayed, the control circuit outputs an on signal to the gate line group to turn on the drive circuit, transmits the signal output by the control circuit to the drive circuit, and then inputs the signal to the data metal layer of the drive circuit through the data line group; A first signal line and a second signal line are prepared on the surface of the substrate in the imaging area, and the surface of the substrate in the imaging area is covered with a light shielding layer; Prepare a photosensitive structure of the imaging area on the surface of the silicon wafer; The photosensitive structure is transferred to the surface of the substrate of the imaging area, so that the input pin of the photosensitive structure is overlapped with the first signal line, and the output pin of the photosensitive structure is overlapped with the second signal line, wherein the first signal line and the second signal line are arranged in the same layer as the thin film transistor array layer; the first signal line is arranged in the same layer as the gate line group, and the second signal line is arranged in the same layer as the data line group; A color resist layer is formed on a side of the thin film transistor array layer away from the base substrate, and a filter structure is formed on the surface of the base substrate in the imaging area; A packaging structure is prepared on a side of the photosensitive structure and the filter structure away from the substrate, wherein the packaging structure is a lens structure; A liquid crystal layer is prepared on a side of the color resist layer away from the thin film transistor array layer and a side of the encapsulation structure away from the photosensitive structure.

8. A display device, characterized in that: At least comprising the display panel according to any one of claims 1 to 6.

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