Display panel and display device

Abstract

The utility model discloses a display panel and a display device. The display panel comprises a display side and a non-display side which are oppositely arranged; in the plane perpendicular to the plane where the display panel is located, the display panel comprises a first light adjusting structure and a photoelectric conversion assembly which are arranged in a stacked mode, and the first light adjusting structure is closer to the display side than the photoelectric conversion assembly; the photoelectric conversion assembly comprises a plurality of photoresist patterns and a plurality of photoelectric sensors, and the plurality of photoresist patterns are closer to the display side than the plurality of photoelectric sensors; the light resistance pattern is configured to only allow visible light of a set color to be emitted to the photoelectric sensor; the set color is one of three primary colors; the orthographic projection of the first light adjusting structure and the orthographic projection of the at least one photoresist pattern on the plane where the display panel is located are at least partially overlapped, in the visible light range, the transmissivity of the first light adjusting structure is larger than the reflectivity, and the detection accuracy of the photoelectric conversion assembly can be improved.

Description

Technical Field

[0001] This utility model relates to, but is not limited to, the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] With the continuous development of technology, electronic products are becoming increasingly intelligent in design. Currently, some display devices have integrated light detection functions, typically incorporating photoelectric sensors to detect ambient light. However, the photoelectric sensors integrated into existing display devices have relatively poor accuracy in detecting ambient light. Utility Model Content

[0003] This utility model provides a display panel and display device that can improve the accuracy of photoelectric conversion component detection.

[0004] On one hand, this utility model embodiment provides a display panel, including a display side and a non-display side disposed opposite to each other; in a plane perpendicular to the plane where the display panel is located, the display panel includes a first light adjustment structure and a photoelectric conversion component stacked together, and the first light adjustment structure is closer to the display side than the photoelectric conversion component;

[0005] The photoelectric conversion component includes multiple photoresist patterns and multiple photoelectric sensors, with the multiple photoresist patterns being closer to the display side than the multiple photoelectric sensors; the photoresist patterns are configured to allow only visible light of a set color to be incident on the photoelectric sensors; the set color is one of the three primary colors;

[0006] The first light-adjusting structure and at least one of the photoresist patterns at least partially overlap in the orthographic projection of the plane where the display panel is located, and in the visible light range, the transmittance of the first light-adjusting structure is greater than its reflectance.

[0007] In one exemplary embodiment, the orthographic projection of the first light adjustment structure onto the plane of the display panel covers the orthographic projection of the plurality of photoresist patterns onto the plane of the display panel.

[0008] In an exemplary embodiment, the first light-adjusting structure includes a plurality of film layers stacked together, the plurality of film layers including a plurality of first film layers and at least one second film layer, and the first film layers and the second film layers are alternately arranged; the refractive index of the first film layer is less than the refractive index of the second film layer.

[0009] In an exemplary embodiment, the film layer closest to the photoelectric conversion component and the film layer furthest from the photoelectric conversion component among the plurality of film layers are both the first film layer.

[0010] In an exemplary embodiment, the refractive index of the first film layer ranges from 1.3 to 1.5 in the visible light range, and the refractive index of the second film layer ranges from 1.6 to 2.5.

[0011] In one exemplary embodiment, the thickness of the first light-modulating structure ranges from 200 nanometers to 300 nanometers.

[0012] In one exemplary embodiment, the display panel includes a display area and a border area surrounding the display area; the display area includes a non-display area, and the photoelectric conversion component is located in the non-display area;

[0013] The display panel further includes an ink layer and a cover layer stacked together. The ink layer and the first light adjustment structure are both located on the cover layer, and the ink layer is located on the side of the cover layer away from the display side. The first light adjustment structure is located on the side of the cover layer close to the display side, or on the side of the cover layer away from the display side. Alternatively, the display panel includes two first light adjustment structures, which are respectively located on opposite sides of the cover layer.

[0014] In an exemplary embodiment, the ink layer includes an inner boundary and an outer boundary, the outer boundary surrounding the outer side of the inner boundary; the photoelectric conversion component includes a plurality of components, each of the components including the photoresist pattern and the photoelectric sensor; the display panel further includes a black matrix having a plurality of openings, the plurality of openings being arranged in pairs with the plurality of components, and the openings exposing portions of the photoresist patterns of the paired components; at least one of the openings has a distance range H between it and the inner boundary along a direction parallel to the plane of the display panel, satisfying the following formula (1):

[0015] H= L1*tan(arcsin(sinβ / n))+ L2 (1)

[0016] In the above formula, β is the maximum incident angle of light detected by the component, n ranges from 1.5 to 1.6, L1 is the distance between the surface of the cover layer away from the display side and the surface of the component near the display side along the direction perpendicular to the plane where the display panel is located; L2 ranges from 0.13 mm to 0.15 mm.

[0017] In one exemplary embodiment, the plurality of components includes a first component, a second component, and a third component, and the plurality of photoresist patterns include a first photoresist pattern, a second photoresist pattern, and a third photoresist pattern; the first component includes the first photoresist pattern, which is configured to allow only visible light in the red band to illuminate the photosensitive sensor of the first component; the second component includes the second photoresist pattern, which is configured to allow only visible light in the green band to illuminate the photosensitive sensor of the second component; the third component includes the third photoresist pattern, which is configured to allow only visible light in the blue band to illuminate the photosensitive sensor of the third component;

[0018] The openings that are paired with the first component, the openings that are paired with the second component, and the openings that are paired with the third component all have a distance range H between them and the inner boundary, which is parallel to the plane of the display panel.

[0019] In one exemplary embodiment, the display panel further includes a polarizer located between the photoelectric conversion component and the first light adjustment structure; the display panel further includes a second light adjustment structure and a third light adjustment structure, the second light adjustment structure and the third light adjustment structure being located on opposite sides of the polarizer, and the second light adjustment structure and the third light adjustment structure being integral with the polarizer; at least one of the second light adjustment structure and the third light adjustment structure at least partially overlaps with the orthographic projection of at least one of the photoresist patterns on the plane of the display panel; in the visible light range, the transmittance of the second light adjustment structure is greater than its reflectance, and the transmittance of the third light adjustment structure is greater than its reflectance.

[0020] In an exemplary embodiment, the polarizer includes a substrate, a first protective film, and a second protective film stacked together, with the first and second protective films located on opposite sides of the substrate; the second light-adjusting structure is integral with one of the first and second protective films, and the third light-adjusting structure is integral with the other of the first and second protective films; the materials of the first and second protective films are both cellulose triacetate.

[0021] In one exemplary embodiment, the display panel further includes a polarizer located between the photoelectric conversion component and the first light adjustment structure; the display panel also includes a second light adjustment structure and a third light adjustment structure, located on opposite sides of the polarizer, and the second and third light adjustment structures are integral with the polarizer; at least one of the second and third light adjustment structures at least partially overlaps with the orthographic projection of at least one of the photoresist patterns on the plane of the display panel; in the visible light range, the transmittance of the second light adjustment structure is greater than its reflectance, and the transmittance of the third light adjustment structure is greater than its reflectance.

[0022] In an exemplary embodiment, the display panel includes a display area and a border area surrounding the display area; the display area includes a first area and a second area, the first area and the second area do not overlap in their orthographic projections onto the plane of the display panel, and the light transmittance of the second area is higher than that of the first area; the first area includes a non-display area, and the photoelectric conversion component is located in the non-display area.

[0023] In one exemplary embodiment, the photoelectric conversion component includes a plurality of components, each of which includes the photoresist pattern and the photoelectric sensor; the plurality of components includes a first component, a second component, and a third component, and the plurality of photoresist patterns includes a first photoresist pattern, a second photoresist pattern, and a third photoresist pattern; the first component includes the first photoresist pattern, which is configured to allow only visible light in the red band to illuminate the photoelectric sensor of the first component; the second component includes the second photoresist pattern, which is configured to allow only visible light in the green band to illuminate the photoelectric sensor of the second component; the third component includes the third photoresist pattern, which is configured to allow only visible light in the blue band to illuminate the photoelectric sensor of the third component;

[0024] The first component, the second component, and the third component are arranged along a first direction and located on one side of the second region along a second direction. The first direction intersects the second direction and the plane formed by them is parallel to the plane where the display panel is located.

[0025] In one exemplary embodiment, the photoelectric conversion component includes a plurality of components, each of which includes the photoresist pattern and the photoelectric sensor; the plurality of components includes a first component, a second component, and a third component, and the plurality of photoresist patterns includes a first photoresist pattern, a second photoresist pattern, and a third photoresist pattern; the first component includes the first photoresist pattern, which is configured to allow only visible light in the red band to illuminate the photoelectric sensor of the first component; the second component includes the second photoresist pattern, which is configured to allow only visible light in the green band to illuminate the photoelectric sensor of the second component; the third component includes the third photoresist pattern, which is configured to allow only visible light in the blue band to illuminate the photoelectric sensor of the third component;

[0026] The first component, the second component, and the third component are distributed around the second region.

[0027] In one exemplary embodiment, the display panel further includes a light-shielding layer, the light-shielding layer having an annular orthographic projection on the plane of the display panel, and the light-shielding layer surrounding the second region, the orthographic projection of the light-shielding layer on the plane of the display panel covering the orthographic projection of the photoelectric conversion component on the plane of the display panel; the annular width of the light-shielding layer ranges from 0.4 mm to 0.6 mm.

[0028] On the other hand, this utility model provides a display device, including a display panel as described in any of the foregoing embodiments.

[0029] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures particularly pointed out in the description and drawings. Attached Figure Description

[0030] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0031] Figure 1 This is a schematic diagram of a partial cross-sectional structure of a photoelectric sensor assembly;

[0032] Figure 2 This is a schematic diagram of the circuit principle of a photoelectric sensor component;

[0033] Figure 3 This is a front view schematic diagram of a display panel according to an embodiment of the present invention;

[0034] Figure 4A for Figure 3 A cross-sectional view at point AA in the middle;

[0035] Figure 4B for Figure 3 Cross-sectional view of the area marked BB in the middle;

[0036] Figure 5 This is a schematic diagram of the light propagation path of a portion of the display panel according to an embodiment of the present invention;

[0037] Figure 6A for Figure 3 A cross-sectional view of another embodiment at point AA;

[0038] Figure 6B This is a cross-sectional schematic diagram of the first light adjustment structure according to an embodiment of the present invention;

[0039] Figure 7A for Figure 3 A cross-sectional schematic diagram of another embodiment at point AA;

[0040] Figure 7B This is a cross-sectional schematic diagram of the second polarizer assembly according to an embodiment of the present invention;

[0041] Figure 8 for Figure 3 A cross-sectional schematic diagram of another embodiment at point AA;

[0042] Figure 9 This is a partial cross-sectional schematic diagram of a display device according to an embodiment of the present invention;

[0043] Figure 10A This is a cross-sectional schematic diagram of a stacked structure according to an embodiment of the present invention;

[0044] Figure 10B This is a schematic diagram illustrating the dip coating process of a laminated structure according to an embodiment of the present invention.

[0045] Figure 10C This is a cross-sectional schematic diagram of a stacked structure forming a second light-adjusting structure according to an embodiment of the present invention;

[0046] Figure 10D This is a cross-sectional schematic diagram of the formation of a second polarizer assembly according to an embodiment of the present invention;

[0047] Figure 11 This is a partial enlarged front view schematic diagram of the display panel according to another embodiment of the present invention;

[0048] Figure 12 for Figure 11 Cross-sectional view at the CC mark;

[0049] Figure 13 This is a partial cross-sectional schematic diagram of a display device according to another embodiment of the present invention. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be arbitrarily combined with each other.

[0051] In the description of this utility model, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0053] Figure 1 This is a schematic diagram of a partial cross-sectional structure of a photoelectric sensor assembly. Figure 1 The diagram only illustrates a portion of the structure of the photoelectric sensor assembly. The photoelectric sensor assembly may include a substrate 10 and a photoelectric sensor layer 11 and a photoresist layer 13 stacked on the substrate 10. However, the photoelectric sensor assembly may also include other film layer structures, which are not limited thereto. The photoelectric sensor layer 11 may include multiple photoelectric sensors arranged side-by-side. These multiple photoelectric sensors may include a first photoelectric sensor 11-1, a second photoelectric sensor 11-2, a third photoelectric sensor 11-3, and a calibration photoelectric sensor 11-4.

[0054] The photoresist layer 13 may include multiple photoresist patterns arranged side by side. The photoresist patterns at least partially overlap with the orthographic projection of the photodetector onto the plane of the substrate 10. The photoresist patterns can filter light to allow light of a specific wavelength to be incident on its corresponding photodetector. The multiple photoresist patterns may include a first photoresist pattern 13-1, a second photoresist pattern 13-2, and a third photoresist pattern 13-3. The first photoresist pattern 13-1 at least partially overlaps with the orthographic projection of the first photodetector 11-1 onto the plane of the substrate 10, and the first photoresist pattern 13-1 is configured to allow only visible light of the red wavelength band to illuminate the first photodetector 11-1, blocking visible light other than the red wavelength band, so that the first photodetector 11-1 can only sense red light information. The second photoresist pattern 13-2 and the second photosensitive sensor 11-2 have at least partial overlap in their orthographic projections onto the plane of the substrate 10. The second photoresist pattern 13-2 is configured to allow only green-band visible light to illuminate the second photosensitive sensor 11-2, blocking visible light other than green-band light, so that the second photosensitive sensor 11-2 can only sense green light information. The third photoresist pattern 13-3 and the third photosensitive sensor 11-3 have at least partial overlap in their orthographic projections onto the plane of the substrate 10. The third photoresist pattern 13-3 is configured to allow only blue-band visible light to illuminate the third photosensitive sensor 11-3, blocking visible light other than blue-band light, so that the third photosensitive sensor 11-3 can only sense blue light information. The photoresist layer 13 may also include a calibration pattern 13-4, which has at least partial overlap in their orthographic projections onto the plane of the substrate 10. The calibration pattern 13-4 is configured to absorb visible light to prevent visible light from illuminating the calibration photosensitive sensor 11-4.

[0055] Figure 2 This is a schematic diagram of the circuit principle of a photoelectric sensor component. Figure 2 As shown, each photoelectric sensor may include multiple phototransistors, and each phototransistor includes a source, a drain, and a gate electrode. For example, each photoelectric sensor may include three phototransistors. The first photoelectric sensor 11-1 includes a first phototransistor, the second photoelectric sensor 11-2 includes a second phototransistor, the third photoelectric sensor 11-3 includes a third phototransistor, and the calibration photoelectric sensor 11-4 includes a fourth phototransistor.

[0056] like Figure 2As shown, the photoelectric sensor assembly may further include multiple signal transmission lines, which may include: a first control signal line G1, a second control signal line G2, a first voltage transmission line S1, a second voltage transmission line S2, a first output line LR, a second output line LG, a third output line LB, and a fourth output line LD. The first control signal line G1 and the second control signal line G2 are both connected to the gate electrodes of the first, second, third, and fourth phototransistors to control their opening or closing. In this embodiment, by providing two control signal lines, the first control signal line G1 and the second control signal line G2, the reliability of control can be improved. Even if one of the control signal lines G1 or G2 fails, the other line can still be used to control the phototransistor.

[0057] Both the first voltage transmission line S1 and the second voltage transmission line S2 are connected to the sources of the first, second, third, and fourth phototransistors to transmit voltage to their sources. In this embodiment, by providing two voltage transmission lines (S1 and S2), the reliability of voltage transmission to the phototransistor sources is improved. Even if one of the voltage transmission lines fails, the other line can still be used to transmit voltage to the phototransistor sources.

[0058] One end of the first output line LR is connected to the drain of the first phototransistor, and the other end of the first output line LR is used to output the electrical signal converted from red light. One end of the second output line LG is connected to the drain of the second phototransistor, and the other end of the second output line LG is used to output the electrical signal converted from green light. One end of the third output line LB is connected to the drain of the third phototransistor, and the other end of the third output line LB is used to output the electrical signal converted from blue light. One end of the fourth output line LD is connected to the drain of the fourth phototransistor, and the other end of the fourth output line LD is used to provide a calibration electrical signal.

[0059] When the photoelectric sensor is not working, the first voltage transmission line S1 and the second voltage transmission line S2 transmit voltage to the sources of the first, second, third, and fourth phototransistors. This results in leakage current at the drains of these phototransistors, meaning the photoelectric sensor itself exhibits current drift. This leakage current is converted into interference signals, which are not derived from light. Therefore, the photoelectric sensor assembly needs to be corrected to eliminate the influence of interference signals on light information detection. By designing and calibrating photoelectric sensor 11-4, the electrical signals detected by the first, second, and third photoelectric sensors 11-1, 11-2, and 11-3 are compared with those detected by the calibrated photoelectric sensor 11-4, thus eliminating the influence of interference signals on light information detection.

[0060] However, the light illuminating the photoelectric sensor assembly includes not only ambient light but also reflected light from internal components of the display device, which also undergoes photoelectric conversion. However, due to the design of calibration pattern 13-4, calibration photoelectric sensor 11-4 cannot receive the reflected light from internal components of the display device. Therefore, existing photoelectric sensor assemblies cannot eliminate the influence of reflected light from internal components on the light detection results, resulting in poor accuracy in detecting ambient light in existing display devices.

[0061] Therefore, this utility model embodiment provides a display panel, including a display side and a non-display side disposed opposite to each other; in a plane perpendicular to the plane where the display panel is located, the display panel includes a first light adjustment structure and a photoelectric conversion component stacked together, and the first light adjustment structure is closer to the display side than the photoelectric conversion component;

[0062] The photoelectric conversion component includes multiple photoresist patterns and multiple photoelectric sensors, with the multiple photoresist patterns being closer to the display side than the multiple photoelectric sensors; the photoresist patterns are configured to allow only visible light of a set color to be incident on the photoelectric sensors; the set color is one of the three primary colors;

[0063] The first light-adjusting structure and at least one of the photoresist patterns at least partially overlap in the orthographic projection of the plane where the display panel is located, and in the visible light range, the transmittance of the first light-adjusting structure is greater than its reflectance.

[0064] In this embodiment of the invention, by setting a first light adjustment structure, and the first light adjustment structure and at least one photoresist pattern at least partially overlapping in the orthographic projection on the plane of the display panel, the transmittance of the first light adjustment structure is set to be greater than the reflectance in the visible light range, which can reduce the influence of reflected light inside the display panel on the detection results of the photoelectric conversion component and improve the detection accuracy.

[0065] The inventors of this invention discovered during the development of the display device that, given a fixed reflectivity R% for the internal components of the display device, the reflected light varies under different brightness levels. For example, under a white screen, the reflected light intensity is L255*R%. Under a black screen, the reflected light intensity is L0*R%. L0 represents the brightness of the display device under a black screen, and L255 represents the brightness of the display device under a white screen.

[0066] The ambient light value (Lux) detected by the photoelectric conversion component varies under different brightness levels, as shown in Table (1). According to Table (1), when the ambient light remains constant, the higher the brightness of the display device, the greater the ambient light value detected by the photoelectric conversion component, and the worse the detection accuracy. In Table (1), the ambient light value is 300 lux, the current is the current of the backlight unit in the display device, in mA, screen 1 is a black screen, screen 2 is a 64-grayscale screen, screen 3 is a 127-grayscale screen, and screen 4 is a white screen.

[0067] Table (1)

[0068]

[0069] Figure 3 This is a front view schematic diagram of a display panel according to an embodiment of the present invention. Figure 3 As shown, the display panel can be a flat panel for displaying images; it can also be called a screen. For example, the display panel can be a liquid crystal display panel or an organic light-emitting diode (OLED) display panel, etc., but this invention does not limit this. The display panel can include a display area AA and a border area BB surrounding the display area AA. The border area BB can include a first border area located on one side of the display area AA and a second border area located on the remaining sides of the display area AA. For example, the first border area can include the bottom border of the display panel, and the second border area can include the top border, left border, and right border of the display panel.

[0070] The display panel can have a display side and a non-display side arranged opposite each other. The display side is the side of the display panel capable of displaying images. When the human eye is on the display side, the image displayed on the display panel can be viewed. The sensor for the camera in the display device can be located on the non-display side of the display panel; therefore, the sensor for the camera can also be called an under-display sensor. Since the under-display sensor needs to receive light signals transmitted through the display panel, the display panel needs to have high light transmittance in the area corresponding to the under-display sensor. The display panel in this embodiment is not limited to display devices with an under-display camera (Full Display with Camera, FDC), but can also be applied to other display devices with photoelectric conversion components.

[0071] like Figure 3 As shown, the display area AA may include a first area AA1 and a second area AA2. The orthographic projections of the first area AA1 and the second area AA2 onto the plane of the display panel do not overlap. The first area AA1 is mainly used to display images and may include a non-display area and a pixel area. The pixel area is used to implement the display, and the non-display area may surround the pixel area. The light transmittance of the second area AA2 is higher than that of the first area AA1. The second area AA2 may be used to display images or not. The orthographic projection of the under-display sensor onto the plane of the display panel and the orthographic projection of the second area AA2 onto the plane of the display panel at least partially overlap, so that more light can pass through the display panel and be received by the under-display sensor. For example, a portion of the orthographic projection of the under-display sensor onto the plane of the display panel lies within the orthographic projection of the second area AA2 onto the plane of the display panel. Alternatively, the entire orthographic projection of the under-display sensor onto the plane of the display panel lies within the orthographic projection of the second area AA2 onto the plane of the display panel. Alternatively, the orthographic projection of the photosensitive window of the under-display sensor onto the plane of the display panel lies within the orthographic projection of the second area AA2 onto the plane of the display panel.

[0072] In an exemplary embodiment, the first region AA1 can be any region in the display region AA other than the second region AA2.

[0073] In an exemplary embodiment, the first region AA1 may surround at least one side of the second region AA2. For example, the second region AA2 may be located at the top center of the display region AA, and the first region AA1 may surround the second region AA2. For example, the second region AA2 may be located at other positions such as the upper left or upper right corner of the display region AA, and the present invention is not limited thereto.

[0074] In one exemplary embodiment, the orthographic projection of the display area AA onto the plane of the display panel can be a rectangle, such as a rounded rectangle. The orthographic projection of the second area AA2 onto the plane of the display panel can be a circle, an ellipse, a rectangle, a pentagon, or a hexagon, etc., and this invention does not limit this.

[0075] In an exemplary embodiment, the pixel region of the first region AA1 may be provided with multiple pixel units, and each pixel unit may include three sub-pixels. For example, the three sub-pixels are a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged sequentially along the first direction X. The first sub-pixel, the second sub-pixel, and the third sub-pixel may be a blue sub-pixel, a red sub-pixel, and a green sub-pixel, respectively. For example, the three sub-pixels may be arranged sequentially in the order of blue sub-pixel, green sub-pixel, and red sub-pixel. In this embodiment of the invention, the first direction X intersects with the second direction Y, and the plane formed by their intersection is parallel to the plane where the display panel is located. For example, the first direction X and the second direction Y are perpendicular to each other.

[0076] In one exemplary embodiment, at least one sub-pixel may include a pixel electrode and a common electrode, and the orthographic projections of the pixel electrode and the common electrode of the sub-pixel onto the plane of the display panel at least partially overlap. The common electrode of multiple sub-pixels may be an integral structure. The sub-pixel may also include a transistor. The transistor may include a gate electrode, a first electrode, and a second electrode. The gate electrode may be electrically connected to a scan signal line, the first electrode may be electrically connected to a data signal line, and the second electrode may be electrically connected to the pixel electrode of a sub-pixel. The transistor may be configured to provide data signals transmitted via the data signal line to the pixel electrode of the sub-pixel under the control of the scan signal line.

[0077] In one exemplary embodiment, such as Figure 3 As shown, the display panel may further include a photoelectric conversion component 30 located in a non-display area of ​​the display area AA. The photoelectric conversion component 30 may be located between the second area AA2 and the border area BB, and the photoelectric conversion component 30 is located on one side of the second area AA2 along the second direction Y. The photoelectric conversion component 30 may include multiple components and a calibration component 34. The multiple components may include a first component 31, a second component 32, and a third component 33. The first component 31 is configured to sense only red light information, the second component 32 is configured to sense only green light information, and the third component 33 is configured to sense only blue light information. The calibration component 34 is configured to calibrate the first component 31, the second component 32, and the third component 33.

[0078] In one exemplary embodiment, such as Figure 3As shown, the first component 31, the second component 32, the third component 33, and the calibration component 34 can be arranged along the first direction X. For example, the first component 31, the second component 32, the third component 33, and the calibration component 34 can be arranged sequentially along the first direction X. Alternatively, the calibration component 34, the first component 31, the second component 32, and the third component 33 can be arranged sequentially along the first direction X.

[0079] In one exemplary embodiment, the first component 31, the second component 32, and the third component 33 may be arranged along a first direction X, and the calibration component 34 is located on one side of the first component 31, the second component 32, and the third component 33 along a second direction Y. For example, the first component 31, the second component 32, and the third component 33 may be arranged sequentially along the first direction X, and the calibration component 34 is located on one side of the first component 31, the second component 32, and the third component 33 along the second direction Y.

[0080] Figure 4A for Figure 3 A cross-sectional view at point AA. (See diagram below.) Figure 4A As shown, taking a liquid crystal display panel as an example, in the direction perpendicular to the plane of the display panel, that is, the third direction Z (also known as the thickness direction of the display panel), the display panel may include a first polarizer 20, an array substrate 21, a liquid crystal layer 22, a color filter substrate 23, a second polarizer 24, an adhesive layer 25, an ink layer 26, and a cover layer 27, which are stacked sequentially. The cover layer 27 is closer to the display side of the display panel than the first polarizer 20. For example, the cover layer 27 can be a glass cover or a thin film cover. The first polarizer 20 is configured to allow only light with the same polarization direction as itself to pass through, blocking light with other directions, so that polarized light is directed towards the liquid crystal layer 22. The liquid crystal layer 22 includes liquid crystal molecules. Under the action of an electric field, the liquid crystal molecules can change the vibration direction of the polarized light so that the light matches the polarization direction of the second polarizer 24. The first polarizer 20, the liquid crystal layer 22, and the second polarizer 24 can work together to achieve light modulation and image display.

[0081] In an exemplary embodiment, the array substrate 21 may include a substrate and a plurality of conductive layers and a plurality of insulating layers disposed on the substrate. For example, the array substrate 21 may include a first conductive layer, a first insulating layer, a semiconductor layer, a second conductive layer, a second insulating layer, a third conductive layer, a third insulating layer, and a fourth conductive layer sequentially stacked on the substrate. The first conductive layer may include a scan signal line located in the display area AA and a gate electrode of a transistor. For example, the scan signal line and the gate electrode may be an integral structure interconnected. The semiconductor layer may include an active layer of the transistor located in the display area AA. The active layer may include a first region, a second region, and a channel region located between the first and second regions. The second conductive layer may include a data signal line located in the display area AA, with the side of the data signal line near the substrate contacting the side of the first region away from the substrate. The third conductive layer may include a pixel electrode located in the display area AA, which may be connected to the second region via a via disposed in the second insulating layer. The fourth conductive layer may include a common electrode located in the display area AA. The pixel electrode and the common electrode may be configured to generate an electric field that controls the deflection of liquid crystal molecules in the liquid crystal layer 22. The array substrate 21 may include other conductive layers, insulating layers and semiconductor layers. This invention does not limit the structure of the array substrate.

[0082] In one exemplary embodiment, such as Figure 4A As shown, the photoelectric conversion component 30 includes multiple components, including a first component 31. The first component 31 may include a first photoelectric sensor 311 and a first photoresist pattern 312. The first photoelectric sensor 311 may be located on the array substrate 21 and on the side closer to the liquid crystal layer 22. The first photoelectric sensor 311 may include at least one phototransistor. The first photoresist pattern 312 may be located on the color filter substrate 23 and on the side closer to the liquid crystal layer 22. The orthographic projection of the first photoresist pattern 312 and the first photoelectric sensor 311 onto the plane of the display panel at least partially overlaps, and the first photoresist pattern 312 is configured to allow only visible light in the red band to illuminate the first photoelectric sensor 311, blocking visible light other than the red band from illuminating it, so that the first component 31 can only sense red light information. For example, the orthographic projection of the first photoresist pattern 312 onto the plane of the display panel covers the orthographic projection of the first photoelectric sensor 311 onto the plane of the display panel.

[0083] In one exemplary embodiment, such as Figure 4AAs shown, the multiple components include a second component 32, which may include a second photosensitive sensor 321 and a second photoresist pattern 322. The second photosensitive sensor 321 may be located on the array substrate 21 and on the side closer to the liquid crystal layer 22, and may include at least one phototransistor. The second photoresist pattern 322 may be located on the color filter substrate 23 and on the side closer to the liquid crystal layer 22. The second photoresist pattern 322 and the orthographic projection of the second photosensitive sensor 321 onto the plane of the display panel at least partially overlap, and the second photoresist pattern 322 is configured to allow only visible light in the green band to illuminate the second photosensitive sensor 321, blocking visible light other than the green band from illuminating it, so that the second component 32 can only sense green light information. For example, the orthographic projection of the second photoresist pattern 322 onto the plane of the display panel covers the orthographic projection of the second photosensitive sensor 321 onto the plane of the display panel.

[0084] In one exemplary embodiment, such as Figure 4A As shown, the multiple components include a third component 33, which may include a third photoelectric sensor 331 and a third photoresist pattern 332. The third photoelectric sensor 331 may be located on the array substrate 21 and on the side closer to the liquid crystal layer 22, and may include at least one phototransistor. The third photoresist pattern 332 may be located on the color filter substrate 23 and on the side closer to the liquid crystal layer 22. The orthographic projection of the third photoresist pattern 332 and the third photoelectric sensor 331 onto the plane of the display panel at least partially overlaps, and the third photoresist pattern 332 is configured to allow only visible light of the blue band to illuminate the third photoelectric sensor 331, blocking visible light other than the blue band from illuminating it, so that the third component 33 can only sense blue light information. For example, the orthographic projection of the third photoresist pattern 332 onto the plane of the display panel covers the orthographic projection of the third photoelectric sensor 331 onto the plane of the display panel.

[0085] In one exemplary embodiment, such as Figure 4AAs shown, the color filter substrate 23 may include a substrate 231 and a black matrix 232 and a color filter layer 233 located on the substrate 231. The color filter layer 233 may include a red color filter, a green color filter, and a blue color filter. The red sub-pixel includes a red color filter, and the red color filter is configured to allow only visible light in the red band to be emitted. The green sub-pixel includes a green color filter, and the green color filter is configured to allow only visible light in the green band to be emitted. The blue sub-pixel includes a blue color filter, and the blue color filter is configured to allow only visible light in the blue band to be emitted. The first photoresist pattern 312, the second photoresist pattern 322, and the third photoresist pattern 332 may all be located on the substrate 231. The first photoresist pattern 312 may be disposed in the same layer as the red color filter, the second photoresist pattern 322 may be disposed in the same layer as the green color filter, and the third photoresist pattern 332 may be disposed in the same layer as the blue color filter. By placing the first photoresist pattern 312, the second photoresist pattern 322, and the third photoresist pattern 332 on the same layer as the color filter layer 233, the manufacturing process of the display panel can be simplified, and the manufacturing cost can be reduced. In this embodiment of the present invention, "A and B are placed on the same layer" means that A and B are formed simultaneously through the same patterning process.

[0086] In one exemplary embodiment, such as Figure 4A As shown, the black matrix 232 may have multiple openings K, which can penetrate the black matrix 232 along a third direction Z, and can expose a portion of the substrate 231. The multiple openings K can be arranged in pairs with multiple components. At least a portion of the first photoresist pattern 312 can be located within an opening K; for example, a portion of the first photoresist pattern 312 is located within an opening K, and other portions of the first photoresist pattern 312 are located on the side of the opening K closer to the liquid crystal layer 22. In this embodiment of the invention, by providing the openings K, the influence of the black matrix 232 on the detection of red-band visible light by the first component 31 can be avoided.

[0087] In one exemplary embodiment, such as Figure 4A As shown, at least a portion of the second photoresist pattern 322 may be located within the opening K. For example, a portion of the second photoresist pattern 322 is located within the opening K, while other portions of the second photoresist pattern 322 are located on the side of the opening K closer to the liquid crystal layer 22. In this embodiment of the invention, by providing the opening K, the influence of the black matrix 232 on the detection of green band visible light by the second component 32 can be avoided.

[0088] In one exemplary embodiment, such as Figure 4AAs shown, at least a portion of the third photoresist pattern 332 may be located within the opening K. For example, a portion of the third photoresist pattern 332 is located within the opening K, while other portions of the third photoresist pattern 332 are located on the side of the opening K closer to the liquid crystal layer 22. In this embodiment of the invention, by providing the opening K, the influence of the black matrix 232 on the detection of blue band visible light by the third component 33 can be avoided.

[0089] In one exemplary embodiment, the opening K can be a circular hole, an elliptical hole, a rectangular hole, or a hexagonal hole, etc., however, the present invention does not limit it in this respect.

[0090] In one exemplary embodiment, such as Figure 4A As shown, the ink layer 26 does not overlap with the orthographic projections of the first photoresist pattern 312, the second photoresist pattern 322, and the third photoresist pattern 332 on the plane of the display panel. This can prevent the ink layer 26 from blocking visible light, so as not to affect the light detection accuracy of the photoelectric conversion component.

[0091] Figure 4B for Figure 3 A cross-sectional view at point BB. (See diagram below.) Figure 4B As shown, the photoelectric conversion component 30 may include a calibration component 34, which may include a calibration photoelectric sensor 341 and a calibration pattern 342. The calibration photoelectric sensor 341 may be located on the array substrate 21 and on the side closer to the liquid crystal layer 22, and may include at least one phototransistor. The calibration pattern 342 may be located on the color filter substrate 23 and on the side closer to the liquid crystal layer 22. The orthographic projections of the calibration photoelectric sensor 341 and the calibration pattern 342 onto the plane of the display panel at least partially overlap, and the calibration pattern 342 is configured to absorb visible light to prevent visible light from illuminating the calibration photoelectric sensor 341. For example, the orthographic projection of the calibration pattern 342 onto the plane of the display panel covers the orthographic projection of the calibration photoelectric sensor 341 onto the plane of the display panel. The calibration pattern 342 is located on the substrate 231 and is disposed on the same layer as the black matrix 232; for example, it may be an integral structure interconnected. In other words, part of the black matrix 232 can be reused as the calibration pattern 342, which can simplify the structure of the display panel, simplify the manufacturing process, and reduce the manufacturing cost.

[0092] Figure 5 This is a schematic diagram of the light propagation path of a portion of the display panel according to an embodiment of the present invention. Figure 5 As shown, the structure of the display panel has been simplified, and the components are not colored to facilitate identification. For example... Figure 5As shown, the ink layer 26 includes an inner boundary 26a and an outer boundary 26b. The outer boundary 26b surrounds the outer side of the inner boundary 26a. The opening K, which is arranged in pairs with the first component 31, has a distance L3 along the second direction Y between it and the inner boundary 26a. The cover plate layer 27 has a distance L1 along the third direction Z between it and the surface of the first component 31 near the display side. Then tanα=L3 / L1, from which we can derive L3=L1*tanα.

[0093] In the calculation process, the refractive indices of the color filter substrate 23, the second polarizer 24, the adhesive layer 25, and the cover layer 27 are approximated as being the same, and denoted as n. For example... Figure 5 As shown, β is the maximum incident angle of light that the first component 31 can detect. β generally varies depending on the type of display device used in the display panel. α is the angle of refraction corresponding to the refraction of light at the maximum incident angle.

[0094] According to optical principles, when light travels through two media with different refractive indices, its direction of propagation changes. The incident light passes through a medium with a refractive index of n1, the reflected light passes through a medium with a refractive index of n2, the angle of incidence is θ1, the angle of refraction is θ2, and the law of refraction, n1*sinθ1=n2*sinθ2, is satisfied.

[0095] like Figure 5 As shown, since the refractive index of air is approximately 1.0, then n*sinα=sinβ, then sinα=sinβ / n, then α=arcsin(sinβ / n). According to the above, L3=L1*tanα, then L3=L1*tan(arcsin(sinβ / n)).

[0096] The distance L3 is a result obtained from theoretical calculations based on optical principles. In practice, the cumulative tolerance L2 caused by the assembly of components in the display panel also needs to be considered. Therefore, the opening K, which is paired with the first component 31, has a distance range H1 along the second direction Y between it and the inner boundary 26a, where H1 = L3 + L2 = L1 * tan(arcsin(sinβ / n)) + L2. In this embodiment of the invention, by limiting the distance range between the opening K, which is paired with the first component 31, and the inner boundary 26a, the first component 31, while meeting the requirements for the detection light angle, utilizes the ink layer 26 to absorb some of the reflected light from inside the display panel, reducing the influence of the light inside the display panel on the detection results of the first component 31 and improving the accuracy of the detection by the first component 31.

[0097] In one exemplary embodiment, n can range from 1.5 to 1.6.

[0098] In one exemplary embodiment, L1 can range from 0.2 mm to 0.4 mm.

[0099] In one exemplary embodiment, the range of L2 can be from 0.13 mm to 0.15 mm.

[0100] In an exemplary embodiment, the opening K, which is paired with the second component 32, has a distance range H2 along the second direction Y between it and the inner boundary 26a, where H2 = L3 + L2 = L1 * tan(arcsin(sinβ / n)) + L2. In this embodiment, by limiting the distance range between the opening K, which is paired with the second component 32, and the inner boundary 26a, the second component 32, while meeting the requirements for the detection light angle, utilizes the ink layer 26 to absorb some of the reflected light from inside the display panel. This reduces the influence of the light inside the display panel on the detection results of the second component 32, thereby improving the accuracy of the detection by the second component 32.

[0101] In an exemplary embodiment, the opening K, which is paired with the third component 33, has a distance range H3 along the second direction Y between it and the inner boundary 26a, where H3 = L3 + L2 = L1 * tan(arcsin(sinβ / n)) + L2. In this embodiment, by limiting the distance range between the opening K, which is paired with the third component 33, and the inner boundary 26a, the third component 33, while meeting the requirements for the detection light angle, utilizes the ink layer 26 to absorb some of the reflected light from inside the display panel. This reduces the influence of the light inside the display panel on the detection results of the third component 33, thereby improving the accuracy of the detection by the third component 33.

[0102] In an exemplary embodiment, the distance range H between at least one opening K and the inner boundary 26a along a direction parallel to the plane where the display panel is located satisfies the following formula (1):

[0103] H= L1*tan(arcsin(sinβ / n))+ L2 (1)

[0104] For example, the direction parallel to the plane where the display panel is located can be the second direction.

[0105] Figure 6A for Figure 3 A cross-sectional view of another embodiment at point AA. (See diagram below.) Figure 6AAs shown, the display panel may further include at least one first light-adjusting structure 40, which may be located on the side of the cover layer 27 closer to the liquid crystal layer 22, or on the side of the cover layer 27 away from the liquid crystal layer 22. Alternatively, the display panel may include two first light-adjusting structures 40, which are respectively located on opposite sides of the cover layer 27 along the third direction Z. The first light-adjusting structure 40 at least partially overlaps with the orthographic projection of the photoelectric conversion component 30 onto the plane of the display panel, and the first light-adjusting structure 40 at least partially overlaps with the orthographic projection of at least one of the first component 31, the second component 32, and the third component 33 onto the plane of the display panel. The transmittance of the first light-adjusting structure 40 to visible light is greater than its reflectance. For example, the orthographic projection of the first light-adjusting structure 40 onto the plane of the display panel covers the orthographic projections of the first component 31, the second component 32, and the third component 33 onto the plane of the display panel. For example, the orthographic projection of the first light-adjusting structure 40 onto the plane of the display panel covers the orthographic projection of the photoelectric conversion component 30 onto the plane of the display panel. In this embodiment of the present invention, by utilizing the first light adjustment structure 40, the proportion of light emitted from the cover layer 27 can be increased, and the proportion reflected by the cover layer 27 can be reduced. This can reduce the influence of reflected light inside the display panel on the detection results of the photoelectric conversion component 30, and improve the detection accuracy of the photoelectric conversion component 30.

[0106] Figure 6B This is a cross-sectional schematic diagram of the first light-adjusting structure according to an embodiment of the present invention. Figure 6B As shown, the first light-adjusting structure 40 has a first surface and a second surface disposed opposite each other along a third direction Z. The first light-adjusting structure 40 may include a plurality of stacked film layers, which may include a plurality of first film layers 41 and at least one second film layer 42. The first film layers 41 and second film layers 42 are alternately disposed among the plurality of film layers, and the refractive index of the first film layer 41 is less than the refractive index of the second film layer 42. The film layers closest to and furthest from the cover layer 27 are both first film layers 41. For example, the first light-adjusting structure 40 may include two first film layers 41 and one second film layer 42, with the second film layer 42 located between the two first film layers 41. Alternatively, the first light-adjusting structure 40 may include four first film layers 41 and three second film layers 42, stacked as shown in the diagram. Figure 6B As shown. In this embodiment of the present invention, by setting the first light adjustment structure 40 as a stacked structure including film layers with different refractive indices, the reflected light from the first surface and the second surface can cancel each other out. This reduces the reflected light between the color filter substrate 23 and the second polarizer 24, between the second polarizer 24 and the adhesive layer 25, and between the adhesive layer 25 and the cover plate layer 27, thereby increasing the light transmittance, reducing the impact of reflected light inside the display panel on the detection results of the photoelectric conversion component 30, and improving the accuracy of light detection by the photoelectric conversion component 30.

[0107] In an exemplary embodiment, the material of the first film layer 41 may include one or more of silicon dioxide, magnesium fluoride, niobium oxide, and aluminum oxide. In the visible light range, the refractive index of the first film layer 41 may range from 1.3 to 1.5. For example, the refractive index of the first film layer 41 may be 1.4. The material of the second film layer 42 may include any one or more of the following: oxides and nitrides. The oxides may include any one or more of the following: titanium dioxide, zirconium dioxide, and niobium pentoxide. The nitrides may include silicon nitride. In the visible light range, the refractive index of the second film layer 42 may range from 1.6 to 2.5. For example, the refractive index of the second film layer 42 may be 2.1, or the refractive index of the second film layer 42 may be 2.0.

[0108] In an exemplary embodiment, the thickness of the first light-adjusting structure 40 can range from 200 nanometers to 300 nanometers. The first light-adjusting structure 40 has a first surface and a second surface disposed opposite each other along a third direction Z. When light is incident on the first light-adjusting structure 40 from the side closer to the liquid crystal layer 22, the light will be reflected from the first surface and the second surface. If the thickness of the first light-adjusting structure 40 is a quarter wavelength (λ / 4), a half wavelength (λ / 2) optical path difference will be generated between the light reflected from the first surface and the light reflected from the second surface. According to the principle of light interference, the phases of these two reflected lights are opposite, and they cancel each other out when superimposed, thereby reducing the reflected light incident on the photoelectric conversion component and improving the detection accuracy of the photoelectric conversion component.

[0109] Figure 7A for Figure 3 A cross-sectional view of another embodiment at point AA. (See diagram below.) Figure 7AAs shown, the display panel may further include a second light adjustment structure 50 and a third light adjustment structure 60 stacked together, which may be located on opposite sides of the second polarizer 24. The orthographic projections of the second light adjustment structure 50 and the third light adjustment structure 60 onto the plane of the display panel may overlap. The orthographic projection of the second light adjustment structure 50 onto the plane of the display panel at least partially overlaps with the orthographic projection of the photoelectric conversion component 30 onto the plane of the display panel, and the orthographic projection of the second light adjustment structure 50 onto the plane of the display panel at least partially overlaps with the orthographic projection of at least one of the first component 31, the second component 32, and the third component 33. The transmittance of the second light adjustment structure 50 and the third light adjustment structure 60 to visible light is greater than their reflectance. For example, the orthographic projections of the second light adjustment structure 50 and the third light adjustment structure 60 onto the plane of the display panel both cover the orthographic projections of the first component 31, the second component 32, and the third component 33 onto the plane of the display panel. For example, the orthographic projections of the second light adjustment structure 50 and the third light adjustment structure 60 onto the plane of the display panel both cover the orthographic projection of the photoelectric conversion component 30 onto the plane of the display panel. In this embodiment of the invention, by utilizing the second light adjustment structure 50 and the third light adjustment structure 60, the proportion of light emitted from the second polarizer 24 can be increased, and the proportion reflected by the second polarizer 24 can be reduced. This can reduce the influence of reflected light from inside the display panel on the detection results of the photoelectric conversion component 30, and improve the accuracy of the detection by the photoelectric conversion component 30.

[0110] Figure 7B This is a cross-sectional schematic diagram of the second polarizer assembly according to an embodiment of the present invention. Figure 7B As shown, the second polarizer assembly may include a release film 245, an adhesive layer 243, a third light-adjusting structure 60, a second protective film 242, a substrate 240, a first protective film 241, a second light-adjusting structure 50, and a protective film 244, which are stacked sequentially. During the assembly of the second polarizer assembly onto the color filter substrate 23, the release film 245 can be removed, and the adhesive layer 243 can be used to adhere the second polarizer 24, the second light-adjusting structure 50, and the third light-adjusting structure 60 to the side of the color filter substrate 23 away from the liquid crystal layer 22. The second polarizer 24 may include the second protective film 242, the substrate 240, and the first protective film 241.

[0111] In an exemplary embodiment, the material of the substrate 240 may include polyvinyl alcohol. The materials of the second protective film 242 and the first protective film 241 may be the same; for example, both may be triacetyl cellulose, which has excellent photostability. The second protective film 242 and the first protective film 241 may be processed using different or the same methods. These methods include general processing and special processing. Special processing includes hardcoat (HC) processing and zero-position phase delay processing. For example, the first protective film 241 may undergo general processing, while the second protective film 242 may undergo zero-position phase delay processing. Zero-position phase delay processing allows the second protective film 242 to have better viewing angle, contrast, and color shift. The adhesive layer 243 may be a pressure-sensitive adhesive (PSA) layer. The protective film 244 and the release film 245 may both be transparent films. For example, they may be transparent silicone films or transparent silicone PET films (polyethylene terephthalate), etc.

[0112] Figure 8 for Figure 3 A cross-sectional view of another embodiment at point AA. (See diagram below.) Figure 8 As shown, the display panel may further include at least one first light adjustment structure 40, a second light adjustment structure 50, and a third light adjustment structure 60. The first light adjustment structure 40 may be located on the side of the cover layer 27 closer to the liquid crystal layer 22, or the first light adjustment structure 40 may be located on the side of the cover layer 27 away from the liquid crystal layer 22. Alternatively, the display panel may include two first light adjustment structures 40, which are respectively located on both sides of the cover layer 27 along the third direction Z. The second light adjustment structure 50 and the third light adjustment structure 60 may be located on opposite sides of the second polarizer 24. Other structural descriptions can be found in the description of the foregoing embodiments, and will not be elaborated here. In this embodiment of the present invention, by setting the first light adjustment structure 40, the second light adjustment structure 50, and the third light adjustment structure 60, the light inside the display panel can pass through the second polarizer 24, the adhesive layer 25, and the cover layer 27 to the outside world to a greater extent, thereby reducing the influence of reflected light inside the display panel on the detection results of the photoelectric conversion component 30. Since the amount of reflected light from inside the display panel to the photoelectric conversion component 30 is reduced, the difference in light intensity reflected to the photoelectric conversion component 30 under different brightness levels of the display panel will also be reduced. This reduces the impact of changes in reflected light inside the display panel under different brightness levels on the fluctuation of the detection results of the photoelectric conversion component 30, and improves the accuracy of the detection by the photoelectric conversion component 30.

[0113] Figure 9This is a partial cross-sectional view of a display device according to an embodiment of the present invention. Figure 9 As shown, the display device may further include a backlight module 70, and the display panel and the backlight module 70 can be bonded together. The side of the first polarizer 20 away from the liquid crystal layer 22 can be bonded together with the backlight module 70. The display panel can be the display panel given in any of the foregoing embodiments. Figure 9 This is merely a schematic diagram of a display device. The backlight module 70 may include a reflective sheet, a light guide plate, and LED (Light Emitting Diode) light strips, etc.

[0114] The following is an illustrative description of the fabrication process of the display device. The "patterning process" described in this invention includes, for metallic, inorganic, or transparent conductive materials, processes such as photoresist coating, mask exposure, development, etching, and photoresist stripping; for organic materials, it includes processes such as organic material coating, mask exposure, and development. Deposition can be performed using any one or more of sputtering, evaporation, and chemical vapor deposition; coating can be performed using any one or more of spraying, spin coating, and inkjet printing; etching can be performed using any one or more of dry etching and wet etching. This invention does not limit the methods used. A "thin film" refers to a thin film made by depositing, coating, or other processes onto a substrate using a certain material. If the "thin film" does not require a patterning process during the entire fabrication process, it can also be called a "layer." If the "thin film" requires a patterning process during the entire fabrication process, it is called a "thin film" before the patterning process and a "layer" after the patterning process. A "layer" after the patterning process contains at least one "pattern." The "thickness" of the film layer is the dimension of the film layer in the direction perpendicular to the display panel. In an exemplary embodiment of this utility model, "the orthographic projection of B is within the range of the orthographic projection of A" or "the orthographic projection of A includes the orthographic projection of B" means that the boundary of the orthographic projection of B falls within the boundary range of the orthographic projection of A, or the boundary of the orthographic projection of A overlaps with the boundary of the orthographic projection of B.

[0115] The manufacturing process of a display device may include:

[0116] (01) Fabrication of array substrate and color filter substrate.

[0117] In one exemplary embodiment, fabricating the array substrate may include: forming a first conductive thin film on a substrate, and subsequently patterning the first conductive thin film using a patterning process to form a first conductive layer. The first conductive layer may include scan signal lines located in the display area AA and gate electrodes of transistors.

[0118] Subsequently, a first insulating film and a semiconductor film are formed sequentially, and a patterning process is used to pattern the first insulating film and the semiconductor film, so that the first insulating film forms a first insulating layer and the semiconductor film forms a semiconductor layer. The semiconductor layer may include the active layer of the transistor located in the display area AA.

[0119] Subsequently, a second conductive thin film is formed, and a patterning process is used to pattern the second conductive thin film to form a second conductive layer. The second conductive layer may include data signal lines located in the display area AA, wherein the side of the data signal lines closer to the substrate can contact the side of the active layer farther from the substrate.

[0120] Subsequently, a second insulating film is formed, and a patterning process is used to pattern the second insulating film to form a second insulating layer. The second insulating layer has vias that expose portions of the active layer.

[0121] Subsequently, a third conductive film is formed, and a patterning process is used to pattern the third conductive film to form a third conductive layer. The third conductive layer may include pixel electrodes located in the display area AA, and the pixel electrodes may be connected to the active layer via vias disposed in the second insulating layer.

[0122] Subsequently, a third insulating film and a fourth conductive film are formed sequentially, and a patterning process is used to pattern the third insulating film to form a third insulating layer, and the fourth conductive film to form a fourth conductive layer. The fourth conductive layer may include a common electrode located in the display area AA.

[0123] In an exemplary embodiment, fabricating the array substrate may further include: mounting a first photoelectric sensor 311, a second photoelectric sensor 321, a third photoelectric sensor 331, and a calibration photoelectric sensor 341.

[0124] In an exemplary embodiment, fabricating a color filter substrate may include: forming a black matrix thin film on a substrate 231, and subsequently patterning the black matrix thin film using a patterning process to form a black matrix 232 and a calibration pattern 342. The black matrix 232 has multiple cutout areas and multiple openings K. The multiple cutout areas are used to accommodate red, green, and blue color filters formed in subsequent processes, and the multiple openings are used to accommodate a first photoresist pattern 312, a second photoresist pattern 322, and a third photoresist pattern 332 formed in subsequent processes.

[0125] Subsequently, a red film is formed, and a patterning process is used to pattern the red film to form a red color film and a first photoresist pattern 312.

[0126] Subsequently, a green film is formed, and a patterning process is used to pattern the green film to form a green color film and a second photoresist pattern 322.

[0127] Subsequently, a blue film is formed, and a patterning process is used to pattern the blue film to form a blue color film and a third photoresist pattern 332.

[0128] In an exemplary embodiment, the color filter layer 233 may include a red color filter, a green color filter, and a blue color filter. Fabricating the color filter substrate may further include: after forming the color filter layer 233, fabricating a spacer.

[0129] (02) The array substrate and the color filter substrate are aligned, liquid crystal molecules are injected and sealed to form a liquid crystal cell.

[0130] (03) Prepare the first polarizer assembly and the second polarizer assembly.

[0131] In an exemplary embodiment, fabricating the second polarizer assembly may include: forming a laminated structure 24a comprising a substrate 240, a first protective film 241, and a second protective film 242, such as Figure 10A As shown.

[0132] The laminated structure 24a is immersed in the mixed solution for at least one dip-coating, such as Figure 10B As shown. For example, the stacked structure 24a can be dip-coated multiple times, for example, up to seven times. Between two adjacent dip-coating operations, the stacked structure 24a needs to be removed, dried, and cooled.

[0133] Subsequently, the laminated structure 24a is removed and subjected to drying and cooling treatment. The laminated structure 24a undergoes dip coating, drying, and cooling treatment so that a portion of the first protective film 241 undergoes a dehydration condensation reaction with the organic hybrid resin in the mixed solution to form the second light-modifying structure 50, and a portion of the second protective film 242 undergoes a dehydration condensation reaction with the organic hybrid resin in the mixed solution to form the third light-modifying structure 60, as shown below. Figure 10C As shown.

[0134] Subsequently, a protective film 244 is formed on the side of the second light-adjusting structure 50 away from the third light-adjusting structure 60, and an adhesive layer 243 and a release film 245 are sequentially formed on the side of the third light-adjusting structure 60 away from the second light-adjusting structure 50. Then, the laminated structure 24a is cut to obtain multiple second polarizer assemblies, such as... Figure 10D As shown.

[0135] In one exemplary embodiment, the mixed solution used for impregnating the laminated structure 24a may include an organic hybrid resin. The organic hybrid resin may include one or more compounds having the following structural formula:

[0136]

[0137] In an exemplary embodiment, the preparation of the mixed solution for impregnating the laminated structure 24a may include: hydrolyzing tetraethyl orthosilicate to generate monosilicic acid and ethanol. The generated monosilicic acids undergo condensation reactions, such as dehydration condensation and de-alcoholization condensation, to form Si-O-Si bonds. The oligomers then polymerize to form a long-chain three-dimensional structure, thus forming an organic hybrid resin.

[0138] In an exemplary embodiment, fabricating a first polarizer assembly may include forming a release film 245, an adhesive layer 243, a second protective film 242, a substrate 240, a first protective film 241, and a protective film 244, which are sequentially stacked. The first polarizer 20 may include the adhesive layer 243, the second protective film 242, the substrate 240, the first protective film 241, and the protective film 244.

[0139] (04) Remove the release film from the first polarizer assembly and attach the first polarizer 20 to the side of the array substrate 21 away from the liquid crystal layer 22. Remove the release film from the second polarizer assembly and attach the second polarizer 24 together with the second light adjustment structure 50 and the third light adjustment structure 60 to the side of the color filter substrate 23 away from the liquid crystal layer 22.

[0140] (05) Prepare the cover plate assembly.

[0141] In an exemplary embodiment, preparing the cover plate assembly may include forming an ink layer 26 on one side of the cover plate layer 27;

[0142] Subsequently, a first film layer 41 and a second film layer 42 are sequentially deposited using plasma-enhanced chemical vapor deposition (PECVD) to form a first light-modulating structure 40. Sequential deposition using the same deposition method simplifies the process, eliminating the need for continuous equipment switching and reducing process complexity. In one example, the multiple film layers in the first light-modulating structure 40 can be sequentially deposited using evaporation or chemical vapor deposition (CVD).

[0143] (06) A bonding process is used to bond the cover plate assembly to the liquid crystal cell obtained in the aforementioned operation. For example, an adhesive layer 25 is formed on the liquid crystal cell obtained in the aforementioned operation, and then a bonding process is used to bond the cover plate assembly to the liquid crystal cell.

[0144] (07) Prepare a backlight module and assemble the backlight module with the liquid crystal cell obtained in the above operation.

[0145] The aforementioned manufacturing process of the display device is only an exemplary embodiment. In actual production, the manufacturing process can be adapted. For example, the manufacturing of the cover plate assembly and the manufacturing of the backlight module can be carried out simultaneously, or the manufacturing of the first polarizer assembly and the second polarizer assembly can be carried out simultaneously with the manufacturing of the array substrate and the color filter substrate, which can shorten the manufacturing cycle of the display device.

[0146] Figure 11 This is a partial enlarged front view schematic diagram of the display panel according to another embodiment of the present invention. Figure 12 for Figure 11 A cross-sectional view at the point marked CC. (See diagram below.) Figure 11 , Figure 12 As shown, the photoelectric conversion component 30 can be located in the non-display area of ​​the first region AA1, and the photoelectric conversion component 30 is arranged around the second region AA2. In a direction perpendicular to the plane of the display panel, the display panel may include a first polarizer 20, an array substrate 21, a liquid crystal layer 22, a color filter substrate 23, a second polarizer 24, an adhesive layer 25, an ink layer 26, and a cover layer 27, stacked sequentially. The cover layer 27 is closer to the display side of the display panel than the first polarizer 20. The orthographic projection of the ink layer 26 onto the plane of the display panel does not overlap with the orthographic projection of the second region AA2 onto the plane of the display panel. Figure 12 The illustrated cross-sectional view does not show ink layer 26, to avoid ink layer 26 blocking external light and affecting the performance of the camera.

[0147] The display panel may further include a light-shielding layer 80. The orthographic projection of the light-shielding layer 80 onto the plane of the display panel may be annular, for example, circular. The light-shielding layer 80 may surround the second region AA2, and the orthographic projection of the light-shielding layer 80 onto the plane of the display panel does not overlap with the orthographic projection of the second region AA2 onto the plane of the display panel. The orthographic projection of the light-shielding layer 80 onto the plane of the display panel covers the orthographic projection of the photoelectric conversion component 30 onto the plane of the display panel.

[0148] The display panel may further include at least one first light-adjusting structure 40, which may be located on the side of the cover layer 27 closer to the liquid crystal layer 22, or on the side of the cover layer 27 away from the liquid crystal layer 22. Alternatively, the display panel may include two first light-adjusting structures 40, which are located on opposite sides of the cover layer 27 along a third direction Z. The first light-adjusting structure 40 at least partially overlaps with the orthographic projection of the photoelectric conversion component 30 onto the plane of the display panel, and the first light-adjusting structure 40 at least partially overlaps with the orthographic projection of at least one of the first component 31, the second component 32, and the third component 33 onto the plane of the display panel. The first light-adjusting structure 40 has a transmittance greater than its reflectance for visible light. For example, the orthographic projection of the first light-adjusting structure 40 onto the plane of the display panel covers the orthographic projections of the first component 31, the second component 32, and the third component 33 onto the plane of the display panel. For example, the orthographic projection of the first light-adjusting structure 40 onto the plane of the display panel covers the orthographic projection of the photoelectric conversion component 30 onto the plane of the display panel. In this embodiment of the present invention, by utilizing the first light adjustment structure 40, the proportion of light emitted from the cover layer 27 can be increased, and the proportion reflected by the cover layer 27 can be reduced. This can reduce the influence of reflected light inside the display panel on the detection results of the photoelectric conversion component 30, and improve the detection accuracy of the photoelectric conversion component 30.

[0149] In one exemplary embodiment, the light-shielding layer 80 and the black matrix 232 can be disposed on the same layer, which can simplify the manufacturing process of the display panel. The calibration pattern 342 is disposed on the same layer as the light-shielding layer 80 and can be an integral structure that is interconnected. That is, a portion of the light-shielding layer 80 can be used as the calibration pattern 342.

[0150] In one exemplary embodiment, such as Figure 11 As shown, the light-shielding layer 80 may have multiple openings 81, and the openings 81 penetrate the light-shielding layer 80. The multiple openings 81 are arranged in pairs with multiple photoresist patterns. The openings 81 at least partially overlap with the orthographic projection of the first photoresist pattern 312 onto the plane of the display panel; for example, the orthographic projection of the opening 81 onto the plane of the display panel lies within the orthographic projection of the first photoresist pattern 312 onto the plane of the display panel. The openings 81 at least partially overlap with the orthographic projection of the second photoresist pattern 322 onto the plane of the display panel; for example, the orthographic projection of the opening 81 onto the plane of the display panel lies within the orthographic projection of the second photoresist pattern 322 onto the plane of the display panel. The openings 81 at least partially overlap with the orthographic projection of the third photoresist pattern 332 onto the plane of the display panel; for example, the orthographic projection of the opening 81 onto the plane of the display panel lies within the orthographic projection of the third photoresist pattern 332 onto the plane of the display panel.

[0151] In an exemplary embodiment, the orthographic projection of the opening 81 onto the plane of the display panel can be arc-shaped or elongated, etc.

[0152] In one exemplary embodiment, such as Figure 11 As shown, the orthographic projection of the light-shielding layer 80 onto the plane of the display panel can be annular, and the annular width W1 of the light-shielding layer 80 can range from 0.4 mm to 0.6 mm. For example, the annular width W1 can be 0.5 mm.

[0153] In one exemplary embodiment, such as Figure 11 As shown, the minimum interval W2 between the opening 81, which is paired with the first photoresist pattern 312, away from the edge of the second region AA2, and the light-shielding layer 80, which is close to the edge of the second region AA2, along the direction parallel to the plane of the display panel can range from 0.03 mm to 0.1 mm.

[0154] In one exemplary embodiment, such as Figure 11 As shown, the minimum interval W3 between the opening 81, which is paired with the second photoresist pattern 322, away from the edge of the second region AA2, and the light-shielding layer 80, which is close to the edge of the second region AA2, along the direction parallel to the plane of the display panel can range from 0.03 mm to 0.1 mm.

[0155] In one exemplary embodiment, such as Figure 11 As shown, the minimum interval W4 between the opening 81, which is arranged in pairs with the third photoresist pattern 332, away from the edge of the second region AA2 and the light-shielding layer 80, which is close to the edge of the second region AA2, along the direction parallel to the plane of the display panel can be from 0.03 mm to 0.1 mm.

[0156] In one exemplary embodiment, such as Figure 12 As shown, the first polarizer 20 may have a first clearance opening 20a. The second polarizer 24 has a second clearance opening 24b, which at least partially overlaps with the orthographic projection of at least one photoresist pattern onto the plane of the display panel, and at least partially overlaps with the orthographic projection of at least one opening 81 onto the plane of the display panel. For example, the orthographic projection of the second clearance opening 24b onto the plane of the display panel covers the orthographic projection of at least one opening 81 onto the plane of the display panel. The second region AA2 is located within the orthographic projection of the second clearance opening 24b onto the plane of the display panel, and the minimum distance W5 between the second clearance opening 24b and the edge of the light-shielding layer 80 near the second region AA2 along a direction parallel to the plane of the display panel can be from 0.18 mm to 0.25 mm, which can prevent the second polarizer 24 from obstructing the photoelectric conversion component 30.

[0157] Figure 13 This is a partial cross-sectional view of a display device according to another embodiment of the present invention. Figure 13 As shown, the display device may also include a backlight module 70 and a camera. The camera may be located on the non-display side of the display panel. Other details can be found in the description of the foregoing embodiments.

[0158] This utility model embodiment also provides a display device, which includes the display panel of any of the foregoing embodiments. The display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator, and this utility model embodiment is not limited thereto.

[0159] Although the embodiments disclosed in this utility model are as described above, the content described is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be defined by the appended claims.

Claims

1. A display panel, characterized by, It includes a display side and a non-display side that are arranged opposite to each other; in a plane perpendicular to the plane where the display panel is located, the display panel includes a first light adjustment structure and a photoelectric conversion component that are stacked together, and the first light adjustment structure is closer to the display side than the photoelectric conversion component; The photoelectric conversion component includes multiple photoresist patterns and multiple photoelectric sensors, with the multiple photoresist patterns being closer to the display side than the multiple photoelectric sensors; the photoresist patterns are configured to allow only visible light of a set color to be incident on the photoelectric sensors; the set color is one of the three primary colors; The first light-adjusting structure and at least one of the photoresist patterns at least partially overlap in the orthographic projection of the plane where the display panel is located, and in the visible light range, the transmittance of the first light-adjusting structure is greater than its reflectance.

2. The display panel of claim 1, wherein, The orthographic projection of the first light adjustment structure onto the plane of the display panel covers the orthographic projection of the plurality of photoresist patterns onto the plane of the display panel.

3. The display panel of claim 1, wherein, The first light-adjusting structure includes multiple film layers stacked together, the multiple film layers including multiple first film layers and at least one second film layer, and the first film layers and the second film layers are alternately arranged; the refractive index of the first film layer is less than the refractive index of the second film layer.

4. The display panel of claim 3, wherein, The film layer closest to the photoelectric conversion component and the film layer furthest from the photoelectric conversion component among the plurality of film layers are both the first film layer.

5. The display panel of claim 3, wherein, Within the visible light range, the refractive index of the first film layer ranges from 1.3 to 1.5, and the refractive index of the second film layer ranges from 1.6 to 2.

5.

6. The display panel of claim 1, wherein, The thickness of the first light-modulating structure ranges from 200 nanometers to 300 nanometers.

7. The display panel of any one of claims 1 to 6, wherein, The display panel includes a display area and a border area surrounding the display area; the display area includes a non-display area, and the photoelectric conversion component is located in the non-display area. The display panel further includes an ink layer and a cover layer stacked together. The ink layer and the first light adjustment structure are both located on the cover layer, and the ink layer is located on the side of the cover layer away from the display side. The first light adjustment structure is located on the side of the cover layer close to the display side, or on the side of the cover layer away from the display side. Alternatively, the display panel includes two first light adjustment structures, which are respectively located on opposite sides of the cover layer.

8. The display panel of claim 7, wherein, The ink layer includes an inner boundary and an outer boundary, the outer boundary surrounding the outside of the inner boundary; the photoelectric conversion component includes multiple components, each of the components including the photoresist pattern and the photoelectric sensor; the display panel further includes a black matrix having multiple openings, the multiple openings being paired with the multiple components, and the openings exposing portions of the photoresist patterns of the paired components; at least one of the openings has a distance range H between it and the inner boundary along a direction parallel to the plane of the display panel, satisfying the following formula (1): H= L1*tan(arcsin(sinβ / n))+ L2 (1) In the above formula, β is the maximum incident angle of light detected by the component, n ranges from 1.5 to 1.6, L1 is the distance between the surface of the cover layer away from the display side and the surface of the component near the display side along the direction perpendicular to the plane where the display panel is located; L2 ranges from 0.13 mm to 0.15 mm.

9. The display panel of claim 8, wherein, The plurality of components includes a first component, a second component, and a third component, and the plurality of photoresist patterns includes a first photoresist pattern, a second photoresist pattern, and a third photoresist pattern; the first component includes the first photoresist pattern, which is configured to allow only red-band visible light to illuminate the photosensitive sensor of the first component; the second component includes the second photoresist pattern, which is configured to allow only green-band visible light to illuminate the photosensitive sensor of the second component; the third component includes the third photoresist pattern, which is configured to allow only blue-band visible light to illuminate the photosensitive sensor of the third component; The openings paired with the first component, the openings paired with the second component, and the openings paired with the third component all have a distance range H between themselves and the inner boundary, which is parallel to the plane of the display panel.

10. The display panel of claim 9, wherein, The display panel further includes a polarizer, which is located between the photoelectric conversion component and the first light adjustment structure; the display panel further includes a second light adjustment structure and a third light adjustment structure, which are located on opposite sides of the polarizer, and the second light adjustment structure and the third light adjustment structure are integral with the polarizer. At least one of the second light adjustment structure and the third light adjustment structure at least partially overlaps with the orthographic projection of at least one of the photoresist patterns onto the plane of the display panel. In the visible light range, the transmittance of the second light adjustment structure is greater than its reflectance, and the transmittance of the third light adjustment structure is greater than its reflectance.

11. The display panel of claim 10, wherein, The polarizer includes a substrate, a first protective film, and a second protective film stacked together, with the first and second protective films located on opposite sides of the substrate; the second light-adjusting structure is integral with one of the first and second protective films, and the third light-adjusting structure is integral with the other of the first and second protective films; the first and second protective films are both made of cellulose triacetate.

12. The display panel of any one of claims 1 to 6, wherein, The display panel further includes a polarizer, and the polarizer is located between the photoelectric conversion component and the first light adjustment structure; The display panel further includes a second light adjustment structure and a third light adjustment structure, and the second light adjustment structure and the third light adjustment structure are respectively located on opposite sides of the polarizer, and the second light adjustment structure and the third light adjustment structure are integral with the polarizer. At least one of the second light adjustment structure and the third light adjustment structure at least partially overlaps with the orthographic projection of at least one of the photoresist patterns onto the plane of the display panel. In the visible light range, the transmittance of the second light adjustment structure is greater than its reflectance, and the transmittance of the third light adjustment structure is greater than its reflectance.

13. The display panel of any one of claims 1 to 6, wherein, The display panel includes a display area and a border area surrounding the display area; the display area includes a first area and a second area, the first area and the second area do not overlap in their orthographic projections onto the plane of the display panel, and the light transmittance of the second area is higher than that of the first area; the first area includes a non-display area, and the photoelectric conversion component is located in the non-display area.

14. The display panel of claim 13, wherein, The photoelectric conversion component includes multiple components, each of which includes the photoresist pattern and the photoelectric sensor; the multiple components include a first component, a second component, and a third component, and the multiple photoresist patterns include a first photoresist pattern, a second photoresist pattern, and a third photoresist pattern; the first component includes the first photoresist pattern, which is configured to allow only red-band visible light to illuminate the photoelectric sensor of the first component; the second component includes the second photoresist pattern, which is configured to allow only green-band visible light to illuminate the photoelectric sensor of the second component; the third component includes the third photoresist pattern, which is configured to allow only blue-band visible light to illuminate the photoelectric sensor of the third component; The first component, the second component, and the third component are arranged along a first direction and located on one side of the second region along a second direction. The first direction intersects the second direction and the plane formed by them is parallel to the plane where the display panel is located.

15. The display panel of claim 13, wherein, The photoelectric conversion component includes multiple components, each of which includes the photoresist pattern and the photoelectric sensor; the multiple components include a first component, a second component, and a third component, and the multiple photoresist patterns include a first photoresist pattern, a second photoresist pattern, and a third photoresist pattern; the first component includes the first photoresist pattern, which is configured to allow only red-band visible light to illuminate the photoelectric sensor of the first component; the second component includes the second photoresist pattern, which is configured to allow only green-band visible light to illuminate the photoelectric sensor of the second component; the third component includes the third photoresist pattern, which is configured to allow only blue-band visible light to illuminate the photoelectric sensor of the third component; The first component, the second component, and the third component are distributed around the second region.

16. The display panel of claim 15, wherein, The display panel further includes a light-shielding layer, the light-shielding layer having an annular orthographic projection on the plane of the display panel, and the light-shielding layer surrounding the second region, the orthographic projection of the light-shielding layer on the plane of the display panel covering the orthographic projection of the photoelectric conversion component on the plane of the display panel; the annular width of the light-shielding layer ranges from 0.4 mm to 0.6 mm.

17. A display device comprising: A display panel comprising any of claims 1 to 16.

Images