Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel comprises an array substrate and a cover plate. The array substrate comprises a display area and a frame area surrounding the display area, and the substrate comprises a photosensitive device arranged in the frame area. The cover plate is arranged on the array substrate and comprises an ink area, the orthographic projection of the ink area on the array substrate is located in the frame area, the distance between the ink area and the photosensitive device is larger than a preset distance, and the preset distance is in negative correlation with the refractive index of the cover plate and is in positive correlation with the vertical distance from the cover plate to the array substrate. According to the display panel, the distance between the photosensitive device and the orthographic projection of the ink area on the array substrate can be set to be larger than the preset distance, and the preset distance can be determined according to the distance between the cover plate and the array substrate and the refractive index of the cover plate, so that illumination with a large incident angle is not shielded by ink and enters the photosensitive device; and the function of automatically adjusting the brightness of the display panel is prevented from being influenced.

Description

Technical Field

[0001] This application relates to the field of display panel technology, and more specifically, to a display panel and display device. Background Technology

[0002] In related technologies, a display panel includes a display area and a bezel area surrounding the display area. On one hand, to improve the panel's appearance, the cover plate of the display panel has ink screen-printed on the bezel area to cover internal components. On the other hand, the display panel has photosensitive devices located in the bezel area, and these devices adjust the display brightness according to the ambient brightness sensed by the photosensitive devices. Therefore, to allow the photosensitive devices to sense ambient brightness, the ink avoids the photosensitive devices and does not cover the entire bezel area. However, excessive avoidance would affect the panel's appearance, while insufficient avoidance would reduce the photosensitive devices' sensing ability, preventing light with large incident angles from reaching the photosensitive devices and affecting the display panel's automatic brightness adjustment function. Summary of the Invention

[0003] This application provides a display panel and a display device.

[0004] The display panel provided in this application includes an array substrate and a cover plate. The array substrate includes a display area and a border area surrounding the display area, and the substrate includes a photosensitive device disposed in the border area. The cover plate is disposed on the array substrate and includes an ink area. The orthographic projection of the ink area on the array substrate is located within the border area, and the distance between the ink area and the photosensitive device is greater than a preset distance. The preset distance is negatively correlated with the refractive index of the cover plate and positively correlated with the vertical distance from the cover plate to the array substrate.

[0005] The display panel provided in this application embodiment can set the distance between the photosensitive device and the ink area projected onto the array substrate to be greater than a preset distance. The preset distance can be determined based on the distance from the cover plate to the array substrate and the refractive index of the cover plate, so that light with a large incident angle is not blocked by the ink and enters the photosensitive device, thus avoiding affecting the automatic brightness adjustment function of the display panel.

[0006] In some embodiments, the array substrate includes a pixel array, and the photosensitive device is disposed at the middle position on the upper side of the first row of the pixel array.

[0007] In some embodiments, the photosensitive device includes a first set of photosensitive transistors and a second set of photosensitive transistors, and the display panel includes a light filter and a light-shielding film, wherein the light filter is disposed on the first set of transistors and the light-shielding film is disposed on the second set of transistors.

[0008] In some embodiments, the first set of photosensitive transistors includes a plurality of sensing transistors connected in parallel, and the second set of photosensitive transistors includes a plurality of reference transistors connected in parallel.

[0009] In some embodiments, the first group of photosensitive transistors includes a first subgroup, a second subgroup, and a third subgroup, and the filter includes a first color filter, a second color filter, and a third color filter, wherein the first color filter covers the first subgroup, the second color filter covers the second subgroup, and the third color filter covers the third subgroup.

[0010] In some embodiments, the first subgroup includes a plurality of first sensing transistors connected in parallel, the second subgroup includes a plurality of second sensing transistors connected in parallel, and the third subgroup includes a plurality of third sensing transistors connected in parallel.

[0011] In some embodiments, the array substrate includes a pixel array, the plurality of sensing transistors and the plurality of reference transistors are arranged along the row direction of the pixel array at the middle position on the upper side of the first row of the pixel array, the second group of photosensitive transistors is disposed on one side of the first group of photosensitive transistors, and the plurality of first sensing transistors, the plurality of second sensing transistors and the plurality of third sensing transistors are arranged alternately.

[0012] In some embodiments, the filter further covers at least partially the pixel array, the pixel array including a first sub-pixel, a second sub-pixel, and a third sub-pixel, wherein the first color filter covers the first sub-pixel, the second color filter covers the second sub-pixel, and the third color filter covers the third sub-pixel.

[0013] In some embodiments, the array substrate includes a pixel array, the plurality of sensing transistors and the plurality of reference transistors are arranged along the row direction of the pixel array at the middle position on the upper side of the first row of the pixel array, the second group of photosensitive transistors is disposed on one side of the first group of photosensitive transistors, and the plurality of first sensing transistors, the plurality of second sensing transistors and the plurality of third sensing transistors are arranged along the row direction.

[0014] In some embodiments, the array substrate includes an electrostatic ring located between the photosensitive device and the pixel array, the electrostatic ring at least partially covering the display area.

[0015] In some embodiments, the display area includes a display blind zone located between the photosensitive device and the pixel array, the area of ​​the display blind zone being substantially the same as the area occupied by two rows of pixels in the pixel array, and the electrostatic ring being located in the display blind zone.

[0016] In some embodiments, the photosensitive device includes a U-channel transistor.

[0017] The display device provided in this application includes the display panel described in the above embodiments.

[0018] This application provides a display panel and a display device. The display panel includes an array substrate and a cover plate. The array substrate includes a display area and a border area surrounding the display area, and the substrate includes a photosensitive device disposed in the border area. The cover plate is disposed on the array substrate and includes an ink area, the orthographic projection of the ink area on the array substrate being located within the border area, and the distance between the ink area and the photosensitive device is greater than a preset distance. The preset distance is negatively correlated with the refractive index of the cover plate and positively correlated with the vertical distance from the cover plate to the array substrate.

[0019] The display panel can set the distance between the photosensitive device and the ink area projected onto the array substrate to be greater than a preset distance. The preset distance can be determined based on the distance from the cover plate to the array substrate and the refractive index of the cover plate, so that light with a large incident angle is not blocked by the ink and enters the photosensitive device, thus avoiding affecting the display panel's automatic brightness adjustment function.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0022] Figure 1 This is a cross-sectional schematic diagram of the display panel according to an embodiment of this application;

[0023] Figure 2 This is a top view schematic diagram of the display panel according to an embodiment of this application;

[0024] Figure 3 This is a cross-sectional schematic diagram of a display panel according to certain embodiments of this application;

[0025] Figure 4 This is a cross-sectional schematic diagram of a display panel according to certain embodiments of this application;

[0026] Figure 5 This is a schematic diagram of the arrangement of photosensitive devices in some embodiments of this application;

[0027] Figure 6 This is a schematic diagram of the arrangement of photosensitive devices in some embodiments of this application;

[0028] Figure 7This is a schematic diagram of the arrangement of photosensitive devices in some embodiments of this application;

[0029] Figure 8 This is a schematic diagram of the parallel structure of photosensitive devices according to certain embodiments of this application;

[0030] Figure 9 This is a schematic diagram of the parallel structure of photosensitive devices according to certain embodiments of this application;

[0031] Figure 10 This is a cross-sectional schematic diagram of a display panel according to certain embodiments of this application;

[0032] Figure 11 This is a top view schematic diagram of a display panel according to certain embodiments of this application;

[0033] Figure 12 This is a cross-sectional schematic diagram of a display panel according to certain embodiments of this application;

[0034] Figure 13 This is a top view schematic diagram of a display panel according to certain embodiments of this application;

[0035] Figure 14 This is a top view schematic diagram of a display panel according to certain embodiments of this application;

[0036] Figure 15 This is a schematic diagram of a display device according to an embodiment of this application.

[0037] Explanation of key component symbols:

[0038] Array substrate 10, display area 11, border area 12, pixel array 13, first sub-pixel 131, second sub-pixel 132, third sub-pixel 133, display blind area 14, cover plate 20, ink area 21, light-transmitting area 22, blocking layer 23, photosensitive device 30, first group of photosensitive transistors 31, sensing transistor 310, first sub-group 311, first sensing transistor 3110, second sub-group 312, second sensing transistor 3120, third sub-group 313, third... Sensing transistor 3130, second set of photosensitive transistors 32, reference transistor 320, electrostatic ring 33, filter 41, first color filter 411, second color filter 412, third color filter 413, light-shielding film 42, first opening 421, second opening 422, glass substrate 43, upper polarizer 44, optical adhesive layer 45, liquid crystal layer 50, sealant 51, lower polarizer 60, backlight panel 70, display panel 100, display device 1000. Detailed Implementation

[0039] The embodiments of this application are described in detail below. These embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0040] In the embodiments of this application, all directional indications (such as up, down, left, right, front, and back) are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the figures). If the specific posture changes, the directional indications will also change accordingly. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0041] In related technologies, a display panel includes a display area and a bezel area surrounding the display area. On one hand, to improve the panel's appearance, the cover plate of the display panel has ink screen-printed on the bezel area to cover internal components. On the other hand, the display panel has photosensitive devices located in the bezel area, which adjust the display brightness according to the ambient brightness sensed by the photosensitive devices. Therefore, in order for the photosensitive devices to sense ambient brightness, the ink avoids the display area and does not cover the entire bezel area. However, excessive avoidance will affect the panel's appearance, while insufficient avoidance will reduce the sensing capability of the photosensitive devices, preventing light with large incident angles from entering the photosensitive devices and affecting the display panel's automatic brightness adjustment function.

[0042] This application provides a display panel (such as...) Figures 1 to 14 As shown in the figure, the display panel can place the photosensitive device in a suitable position so that light with a large incident angle is not blocked by the ink and enters the photosensitive device, thus avoiding affecting the automatic brightness adjustment function of the display panel.

[0043] Reference Figure 1 as well as Figure 2 The display panel 100 provided in this embodiment includes an array substrate 10 and a cover plate 20. The array substrate 10 includes a display area 11 and a border area 12 surrounding the display area 11. The substrate includes a photosensitive device 30 disposed in the border area 12. The cover plate 20 is disposed on the array substrate 10 and includes an ink area 21. The orthographic projection of the ink area 21 on the array substrate 10 is located within the border area 12, and the distance between the ink area 21 and the photosensitive device 30 is greater than a preset distance. The preset distance is negatively correlated with the refractive index of the cover plate 20 and positively correlated with the vertical distance from the cover plate 20 to the array substrate 10.

[0044] Specifically, the display area 11 of the array substrate 10 can be based on display technologies such as liquid crystal display (LCD), organic light-emitting diode (OLED) or electronic ink (E-ink). The input electrical signal border area 12 is set around the display area 11, and the photosensitive device 30 is set in the border area 12 to reduce the influence of the photosensitive device 30 on the display content of the display area 11, so as to provide a better visual experience.

[0045] The cover plate 20 can be a surface covering layer of the display panel 100 and is disposed on the upper side of the array substrate 10. The cover plate 20 may include a light-transmitting area 22 and an ink area 21. The orthogonal projection of the light-transmitting area 22 on the array substrate 10 can cover the entire display area 11 and the photosensitive device 30 disposed in the bezel area 12. Light is allowed to enter the display area 11 and the photosensitive device 30 disposed in the bezel area 12 through the light-transmitting area 22. The ink area 21 is disposed around the light-transmitting area 22, and light is not allowed to enter the array substrate 10 through the ink area 21.

[0046] by Figure 3 For example, the cover plate 20 can be made of a transparent material (such as glass or plastic), and a screen-printed ink shielding layer 23 is provided on the lower side of a portion of the cover plate 20 to form the ink area 21 of the cover plate.

[0047] Furthermore, referring to Figure 3 as well as Figure 4 In some embodiments, the display panel 100 may further include a light filter 41, a light-shielding film 42, a glass substrate 43, a polarizer 44, an optical adhesive layer 45, a liquid crystal layer 50, a sealant 51, a lower polarizer 60, and a backlight panel 70. The glass substrate 43 may be disposed over the light-shielding film 42, and the light-shielding film 42 may be disposed over the light filter 41. The polarizer 44 may be disposed over the glass substrate 43, and the optical adhesive layer 45 may be disposed over the polarizer 44. The liquid crystal layer 50 may be disposed between the array substrate 10 and the light filter 41, and the sealant 51 is configured to seal the liquid crystal layer 50. The lower polarizer 60 may be disposed under the array substrate 10, and the backlight panel 70 may be disposed under the lower polarizer 60.

[0048] Reference Figure 1 Incident light can pass through the cover plate 20, glass substrate 43, polarizer 44, and optical adhesive layer 45, and enters the array substrate 10 after multiple refractions. Since the refractive indices of the cover plate 20, glass substrate 43, polarizer 44, and optical adhesive layer 45 are essentially the same, to simplify calculations, the path of incident light into the array substrate 10 can be simplified to a straight line, meaning the incident light can enter the array substrate 10 after one refraction, and the refractive index of the incident light is n. It can be understood that n is negatively correlated with the refractive index of the cover plate, and also negatively correlated with the refractive indices of the glass substrate 43, polarizer 44, and optical adhesive layer 45.

[0049] When the incident angle of light is θ1, the refraction angle is θ2, sinθ1 / sinθ2=n, θ2=arcsin(sinθ1 / n). The distance between the cover plate 20 and the array substrate 10 is A, and the deviation distance of the refracted light from the array substrate 10 is B, B=A*tanθ2, that is, B=A*tan[arcsin(sinθ1 / n)]. Since the ink area 21 blocks the light, and the deviation distance of the refracted light from the light-transmitting area 22 is B, if the distance between the photosensitive device 30 and the ink area 21 is less than the deviation distance B, the photosensitive device 30 cannot receive the light with an incident angle of θ1. If the distance between the photosensitive device 30 and the ink area 21 is greater than the deviation distance B, the photosensitive device 30 can receive the light with an incident angle of θ1.

[0050] The corresponding preset distance can be set according to the deviation distance B and the field of view requirements of the photosensitive device 30. The distance between the photosensitive device 30 and the ink area 21 projected onto the array substrate 10 needs to be greater than the preset distance so that the light with a large incident angle is not blocked by the ink and enters the photosensitive device 30, thus avoiding affecting the function of the display panel 100 to automatically adjust the brightness.

[0051] Since the photosensitive device 30 is located in the bezel area 12, the clearance distance between the display area 11 and the ink area 21 is greater than a preset distance. Even when the distance between the display area 11 and the ink area 21 is greater than the preset distance, the clearance distance between the display area 11 and the ink area 21 is limited as much as possible to avoid affecting the appearance of the display panel 100.

[0052] With the field of view of the photosensitive device 30 being ±θ1, the incident angle of the illumination is θ1. With the incident angle of illumination being θ1, the deviation distance of the refracted light on the array substrate 10 is B = A*tan[arcsin(sinθ1 / n)]. The distance between the photosensitive device 30 and the ink area 21 needs to be greater than A*tan[arcsin(sinθ1 / n)] to ensure that the incident light within the field of view range of ±θ1 can illuminate the photosensitive device 30 after refraction.

[0053] With a field of view of ±90° for the photosensitive device 30, the incident angle of the light is 90°. The distance between the photosensitive device 30 and the ink area 21 needs to be greater than A*tan[arcsin(1 / n)] to ensure that the incident light can reach the photosensitive device 30 after refraction within any field of view.

[0054] In related technologies, the distance between the photosensitive device 30 and the display area 11 is approximately 0.234 mm, and the distance between the ink area 21 and the photosensitive device 30 is 0.15 mm. When testing the field of view, when the incident angle θ1 reaches 35°, the illuminance value measured by the photosensitive device 30 drops sharply. When the incident angle θ1 is greater than 35°, the ink area 21 blocks the incident light.

[0055] It is understood that the display panel 100 provided in this application embodiment can set the distance between the photosensitive device 30 and the ink area 21 projected onto the array substrate 10 to be greater than a preset distance. The preset distance can be determined based on the distance from the cover plate 20 to the array substrate 10 and the refractive index of the cover plate 20, so that the light with a large incident angle is not blocked by the ink and enters the photosensitive device 30, thus avoiding affecting the function of the display panel 100 to automatically adjust the brightness.

[0056] With the cover plate 20 perpendicular to the array substrate 10 at a distance of 0.386 mm, the refractive index of the incident light at 1.5, and the field of view of the photosensitive device 30 at ±50°, the preset distance is 0.2295 mm.

[0057] Furthermore, the preset distance can also be determined based on the cumulative tolerance of the display panel 100.

[0058] Reference Figure 2 The tolerance of ink area 21 is ±0.1mm, and the tolerance on one side is ±0.05mm. The height of the screen printing step of the ink (e.g.) Figure 2 The tolerance (as shown in X2) is ±0.07mm, in ink screen printing (such as... Figure 2 The tolerance (as shown in X3) is ±0.1 mm, and the equipment accuracy for the cover plate 20 fitting is ±0.1 mm. The cumulative tolerance C = sqrt(0.05*0.05 + 0.1*0.1 + 0.07*0.07) = 0.132 mm. Considering the cumulative tolerance, the preset distance is 0.132 + 0.2295 = 0.3615 mm.

[0059] Since the photosensitive device 30 is positioned between the display area 11 and the ink area 21 as projected onto the array substrate 10, the photosensitive device 30 needs to be positioned as close as possible to the display area 11 while ensuring that the distance between the ink and the display area 11 is limited.

[0060] Reference Figure 2 In some embodiments, the array substrate 10 includes a pixel array 13, and the photosensitive device 30 is disposed at the middle position on the upper side of the first row of the pixel array 13.

[0061] Specifically, the pixel array 13 is located within the display area 11 of the array substrate 10. The display area 11 of the array substrate 10 can be based on display technologies such as liquid crystal display (LCD), organic light-emitting diode (OLED) or electronic ink (E-ink) to control the operation of the corresponding pixels in the pixel array 13 and convert them into visible images or text to be presented to the user.

[0062] The pixel array 13 may include multiple pixel rows and multiple pixel columns. A corresponding border area 12 is provided above the first pixel row, below the last pixel row, to the left of the first pixel column, and to the right of the last pixel column. The photosensitive element 30 may be disposed in the corresponding border area 12 above the first pixel row.

[0063] The position of the photosensitive element 30 may affect the operation of pixels in nearby locations. The photosensitive element 30 can be positioned in the middle of the upper edge area 12 corresponding to the first pixel row. Even if the position of the photosensitive element 30 affects the operation of the pixels in the middle of the first pixel row, it will not disrupt the symmetry of the pixel array 13, thus avoiding affecting the appearance of the display panel 100.

[0064] Reference Figure 3 as well as Figure 4 In some embodiments, the photosensitive device 30 includes a first set of photosensitive transistors 31 and a second set of photosensitive transistors 32. The display panel 100 includes a light filter 41 and a light-shielding film 42, the light filter 41 being disposed on the first set of transistors and the light-shielding film 42 being disposed on the second set of transistors.

[0065] Specifically, with Figure 3 For example, the filter 41 is disposed between the array substrate 10 and the cover plate 20, and the orthogonal projection of the filter 41 on the array substrate 10 covers the first group of transistors, so that light can enter the first group of transistors through the filter 41.

[0066] A light-shielding film 42 can be disposed between the cover plate 20 and the filter 41, forming a first opening 421 and a second opening 422. The first opening 421 can cover the filter, allowing light to pass through the first opening 421 and the filter 41 into the first group of transistors. The first opening 421 and the second opening 422 can prevent charged particles from the light-shielding film from entering the display area 11 and affecting the liquid crystal electric field.

[0067] by Figure 4 For example, the light-shielding film 42 is disposed between the array substrate 10 and the cover plate 20, and the orthogonal projection of the light-shielding film 42 on the array substrate 10 covers the second group of transistors. The light-shielding film 42 can prevent light from entering the photosensitive device 30.

[0068] The photosensitive device 30 can detect ambient light and automatically adjust the brightness of the display panel 100 to adapt to different ambient light conditions, thereby providing the best viewing experience. The first set of photosensitive transistors 31 can obtain the corresponding ambient light through the filter 41, and the second set of photosensitive transistors 32 is covered by the light-shielding film 42 and can serve as a control group for the first set of photosensitive transistors 31, so that the photosensitive device 30 can accurately receive and respond to changes in ambient light.

[0069] Reference Figure 5 In some embodiments, the first group of photosensitive transistors 31 includes a first subgroup 311, a second subgroup 312, and a third subgroup 313. The filter 41 includes a first color filter 411, a second color filter 412, and a third color filter 413. The first color filter 411 covers the first subgroup 311, the second color filter 412 covers the second subgroup 312, and the third color filter 413 covers the third subgroup 313.

[0070] Specifically, the first color filter 411 filters the received light to obtain light of the first color, so that the first subgroup 311 receives light of the first color. The second color filter 412 filters the received light to obtain light of the second color, so that the second subgroup 312 receives light of the second color. The third color filter 413 filters the received light to obtain light of the third color, so that the third subgroup 313 receives light of the third color. The light-shielding film 42 prevents light of any color from entering the second group of photosensitive transistors 32 and forms a contrast with the first subgroup 311, the second subgroup 312, and the third subgroup 313.

[0071] The photosensitive device 30 can determine the light intensity of the first color according to the first subgroup 311, the light intensity of the second color according to the second subgroup 312, and the light intensity of the third color according to the third subgroup 313.

[0072] Preferably, the first color filter 411 can be a red filter 41, the second color filter 412 can be a green filter 41, and the third color filter 413 can be a blue filter 41. The photosensitive device 30 can determine the intensity of red light based on the first subgroup 311, the intensity of green light based on the second subgroup 312, and the intensity of blue light based on the third subgroup 313.

[0073] Reference Figure 5 as well as Figure 6In some embodiments, the array substrate 10 includes a pixel array 13. A plurality of sensing transistors 310 and a plurality of reference transistors 320 are arranged along the row direction of the pixel array 13 at the middle position of the upper side of the first row of the pixel array 13, a second group of photosensitive transistors 32 is disposed on one side of the first group of photosensitive transistors 31, and a plurality of first sensing transistors 3110, a plurality of second sensing transistors 3120 and a plurality of third sensing transistors 3130 are arranged alternately.

[0074] Specifically, along the row direction of the pixel array 13, the multiple transistors in the photosensitive device 30 can be arranged in a cyclical manner in the order of the first sensing transistor 3110, the second sensing transistor 3120, and the third sensing transistor 3130.

[0075] The multiple reference transistors 320 of the second group of photosensitive transistors 32 are also arranged along the row direction of the pixel array 13, and are arranged in the same row as the first group of photosensitive transistors 31. They can be located to the left or right of the first group of transistors.

[0076] For example, the first group of photosensitive transistors 31 may include 75 first sensing transistors 3110, 75 second sensing transistors 3120, and 75 third sensing transistors 3130. These are arranged 75 times in a cycle along the row direction of the pixel array 13, following the order of one first sensing transistor 3110, one second sensing transistor 3120, and one third sensing transistor 3130. The second group of photosensitive transistors 32 may include 75 reference transistors, which are arranged along the row direction to the left of the first first sensing transistor 3110 or to the right of the 75th third sensing transistor 3130.

[0077] Reference Figure 7 In some embodiments, a plurality of first sensing transistors 3110, a plurality of second sensing transistors 3120 and a plurality of third sensing transistors 3130 are arranged along the row direction.

[0078] Specifically, along the row direction of the pixel array 13, the pixels can be arranged in the order of N first sensing transistors 3110, N second sensing transistors 3120, and N third sensing transistors 3130.

[0079] For example, the first group of photosensitive transistors 31 may include 75 first sensing transistors 3110, 75 second sensing transistors 3120, and 75 third sensing transistors 3130. These are arranged in the row direction of the pixel array 13 in the order of 75 first sensing transistors 3110, 75 second sensing transistors 3120, and 75 third sensing transistors 3130. A first color filter 411 covers the 75 first sensing transistors 3110 of the first subgroup 311, a second color filter 412 covers the 75 first sensing transistors 3120 of the second subgroup 312, and a third color filter 413 covers the 75 first sensing transistors 3130 of the third subgroup 313.

[0080] The second set of photosensitive transistors 32 may include 75 reference transistors, which are arranged in the row direction to the left of the first sensing transistor 3110 or to the right of the 75th third sensing transistor 3130.

[0081] Reference Figure 8 as well as Figure 9 In some embodiments, the first set of photosensitive transistors 31 includes a plurality of sensing transistors 310 connected in parallel, and the second set of photosensitive transistors 32 includes a plurality of reference transistors 320 connected in parallel.

[0082] Multiple sensing transistors 310 are connected in parallel, increasing the total induced current generated by the first group of transistors. Similarly, multiple control transistors are connected in parallel, increasing the total induced current generated by the second group of transistors. This increased induced current in the photosensitive device 30 makes it more sensitive to ambient light, enabling it to detect weak light signals.

[0083] The parallel sensing transistors 310 can expand the detection range of the photosensitive device 30, enabling the photosensitive device 30 to distinguish between strong light and weak light signals, thereby improving its adaptability to different lighting conditions.

[0084] Reference Figure 8 In some embodiments, the first subgroup 311 includes a plurality of first sensing transistors 3110 connected in parallel, the second subgroup 312 includes a plurality of second sensing transistors 3120 connected in parallel, and the third subgroup 313 includes a plurality of third sensing transistors 3130 connected in parallel.

[0085] Specifically, the display panel 100 may include a gate line G1, a source line S1, a drain line D11, a drain line D12, and a drain line D13. The control electrodes of a plurality of first sensing transistors 3110, a plurality of second sensing transistors 3120, and a plurality of third sensing transistors 3130 are connected to the gate line G1. The first electrodes of the plurality of first sensing transistors 3110, the plurality of second sensing transistors 3120, and the plurality of third sensing transistors 3130 are connected to the source line S1. The second electrodes of the plurality of first sensing transistors 3110 are connected to the drain line D11, the second electrodes of the plurality of second sensing transistors 3120 are connected to the drain line D12, and the second electrodes of the plurality of third sensing transistors 3130 are connected to the drain line D13.

[0086] Multiple first sensing transistors 3110 are connected in parallel, making the photosensitive device 30 more sensitive to ambient light of the first color, and enabling the photosensitive device 30 to detect weak light signals. Multiple second sensing transistors 3120 are connected in parallel, making the photosensitive device 30 more sensitive to ambient light of the second color, and enabling the photosensitive device 30 to detect weak light signals. Multiple third sensing transistors 3130 are connected in parallel, making the photosensitive device 30 more sensitive to ambient light of the third color, and enabling the photosensitive device 30 to detect weak light signals.

[0087] Preferably, the drain line D11 can be a data line for red ambient light, the drain line D12 can be a data line for green ambient light, and the drain line D13 can be a data line for blue ambient light.

[0088] Reference Figure 9 The display panel 100 may include a gate line G2, a source line S2, and a drain line D2. The control electrode of a plurality of reference transistors may be connected to the gate line G2, the first electrode of the plurality of reference transistors may be connected to the source line S2, and the second electrode of the plurality of reference transistors may be connected to the drain line D2.

[0089] Reference Figure 10 as well as Figure 11 In some embodiments, the filter 41 also at least partially covers the pixel array 13. The pixel array 13 includes a first sub-pixel 131, a second sub-pixel 132, and a third sub-pixel 133. A first color filter 411 covers the first sub-pixel 131, a second color filter 412 covers the second sub-pixel 132, and a third color filter 413 covers the third sub-pixel 133.

[0090] Specifically, the photosensitive device 30 can be positioned close to the display area 11, and the filter 41 covering the first group of photosensitive transistors 31 can also cover a portion of the pixels in the display area 11. The filter 41 can simultaneously filter the light received by a portion of the pixels and the photosensitive device 30. Specifically, the first color filter 411 can cover the first sub-pixel 131, which can be a sub-pixel of the first color. The second color filter 412 covers the second sub-pixel 132, which can be a sub-pixel of the second color. The third color filter 413 covers the third sub-pixel 133, which can be a sub-pixel of the third color.

[0091] Preferably, the first color is red, the second color is green, and the third color is red. The filter 41 can be elongated along the column direction of the pixel array 13, simultaneously covering the corresponding sub-pixels and the photosensitive device 30, thereby realizing the reuse of the filter 41.

[0092] Preferably, along the row direction of the pixel array 13, the plurality of transistors in the photosensitive device 30 can be arranged cyclically in the order of a first sensing transistor 3110, a second sensing transistor 3120, and a third sensing transistor 3130. Along the row direction of the pixel array 13, a first color filter 411, a second color filter 412, and a third color filter 413 are arranged in a cyclical manner. Each first color filter 411 covers one first sensing transistor 3110, each second color filter 412 covers one second sensing transistor 3120, and each third color filter 413 covers one third sensing transistor 3130.

[0093] Along the row direction of pixel array 13, a first color filter 411, a second color filter 412, and a third color filter 413 are sequentially arranged 75 times. The length of the first color filter 411, the second color filter 412, and the third color filter 413 arranged in the row direction of pixel array 13 is 0.07755 mm, and the total length of filter 41 in the row direction of pixel array 13 is 0.07755 * 75 = 5.82 mm.

[0094] Preferably, the distance between the display area 11 and the edge of the array substrate 10 is 0.9 mm, the distance between the orthographic projection of the filter 41 on the array substrate 10 and the edge of the array substrate 10 is 0.815 mm, and the distance between the photosensitive device 30 and the display area 11 is 0.0675 mm.

[0095] With the cover plate 20 perpendicular to the array substrate 10 at a distance of 0.386 mm, the refractive index of the incident light being refracted at 1.5, the field of view at ±50°, and the cumulative tolerance at 0.132 mm, and a preset distance of 0.3615 mm, the clearance distance between the ink area 21 and the display area 11 is 0.0675 + 0.3615 = 0.429 mm. The clearance distance between the ink area 21 and the display area 11 can be limited to 0.429 mm to avoid affecting the appearance of the display panel 100.

[0096] Reference Figure 12 as well as Figure 13 In some embodiments, a light-shielding film 42 is disposed on the filter 41 and forms a first opening 421 and a second opening 422. The orthographic projection of the first opening 421 on the array substrate 10 covers the first group of photosensitive transistors 31, and the orthographic projection of the second opening 422 on the array substrate 10 is located between the first group of photosensitive transistors 31 and the display area 11.

[0097] Preferably, the distance between the orthographic projection of the first opening 421 on the array substrate 10 and the display area 11 is 0.0675 mm. The width of the orthographic projection of the second opening 422 on the array substrate 10 and the width along the column direction of the pixel array 13 is 0.015 mm, the distance between the orthographic projection of the second opening 422 on the array substrate 10 and the display area 11 is 0.02 mm, and the distance between the second opening 422 and the edge of the filter 41 away from the display area 11 is 0.05 mm.

[0098] In some implementations, the first sub-pixel 131, the second sub-pixel 132, and the third sub-pixel 133 are pixels in the middle of the first row of the pixel array 13, ensuring the symmetry of the pixel array 13 and avoiding affecting the appearance of the display panel 100.

[0099] Reference Figure 12 In some embodiments, the array substrate 10 includes an electrostatic ring 33. The electrostatic ring 33 is located between the photosensitive device 30 and the pixel array 13, and the electrostatic ring 33 at least partially covers the display area 11.

[0100] Specifically, the electrostatic ring 33 located below the photosensitive device 30 can prevent the source signal lines and gate signal lines of the photosensitive device 30 from being burned by electrostatic discharge. In related technologies, the electrostatic ring 33 is disposed in the bezel area 12 and located between the photosensitive device 30 and the display area 11, restricting the photosensitive device 30 from being positioned close to the display area 11. The electrostatic ring 33 provided in this embodiment can partially cover the display area 11, so that the photosensitive device 30 can be positioned close to the display area 11. The electrostatic ring 33 can be partially disposed in the display area 11 and partially disposed in the bezel area 12. The electrostatic ring 33 can also be entirely disposed in the display area 11. When the electrostatic ring 33 is partially disposed in the display area 11, some pixels of the pixel array 13 need to be sacrificed to facilitate the routing of the electrostatic ring 33 and the photosensitive device 30.

[0101] Preferably, the distance between the display area 11 and the edge of the array substrate 10 is 0.9 mm, the distance between the orthographic projection of the filter 41 on the array substrate 10 and the edge of the array substrate 10 is 0.815 mm, and the distance between the photosensitive device 30 and the display area 11 is 0.0775 mm.

[0102] With the cover plate 20 perpendicular to the array substrate 10 at a distance of 0.386 mm, the refractive index of the incident light being refracted at 1.5, the field of view at ±50°, and the cumulative tolerance at 0.132 mm, and a preset distance of 0.3615 mm, the clearance distance between the ink area 21 and the display area 11 is 0.0775 + 0.3615 = 0.429 mm. The clearance distance between the ink area 21 and the display area 11 can be limited to 0.439 mm to avoid affecting the appearance of the display panel 100.

[0103] Preferably, the distance between the orthographic projection of the first opening 421 on the array substrate 10 and the display area 11 is 0.0775 mm. The width of the orthographic projection of the second opening 422 on the array substrate 10 and the width along the column direction of the pixel array 13 is 0.015 mm, the distance between the orthographic projection of the second opening 422 on the array substrate 10 and the display area 11 is 0.02 mm, and the distance between the second opening 422 and the edge of the filter 41 near the display area 11 is 0.01 mm.

[0104] Reference Figure 13Along the row direction of the pixel array 13, multiple transistors in the photosensitive device 30 can be arranged cyclically in the order of a first sensing transistor 3110, a second sensing transistor 3120, and a third sensing transistor 3130. Along the row direction of the pixel array 13, a first color filter 411, a second color filter 412, and a third color filter 413 are arranged in a cyclical manner. Each first color filter 411 covers one first sensing transistor 3110, each second color filter 412 covers one second sensing transistor 3120, and each third color filter 413 covers one third sensing transistor 3130. There may be no gap between any two color filters 41 in the row direction of the pixel array 13.

[0105] Of course, along the row direction of the pixel array 13, the multiple transistors in the photosensitive device 30 can be arranged cyclically in the order of 75 first sensing transistors 3110, 75 second sensing transistors 3120, and 75 third sensing transistors 3130. The first color filter 411 can cover 75 first sensing transistors 3110, the second color filter 412 can cover 75 second sensing transistors 3120, and the third color filter 413 can cover 75 third sensing transistors 3130, with a gap of 0.01 mm between every two color filters 41 in the row direction of the pixel array 13.

[0106] Reference Figure 14 In some embodiments, the display area 11 includes a display blind zone 14. The display blind zone 14 is located between the photosensitive device 30 and the pixel array 13, and the area of ​​the display blind zone 14 is substantially the same as the area occupied by two rows of pixels in the pixel array 13. The electrostatic ring 33 is located in the display blind zone 14.

[0107] Specifically, the first and second rows of pixels in the pixel array 13 can be removed to form a display blind area 14 within the display area 11. The display blind area 14 is configured to accommodate an electrostatic ring 33, ensuring that the electrostatic ring 33 can be set downwards so that the photosensitive device 30 can be positioned close to the display area 11.

[0108] Preferably, there is a 0.01mm gap between every two color filters 41 in the direction of the 13th row of the pixel array, and there is also a 0.01mm gap between every two sub-pixels in the direction of the 13th row of the pixel array, so that the distance of the display blind zone 14 in the direction of the 13th row of the pixel array is 4.5mm.

[0109] In some embodiments, the photosensitive device 30 includes a U-channel transistor.

[0110] Specifically, under the same driving conditions, the photosensitive current of a U-channel transistor is 2.5 times that of a line-channel transistor. Therefore, the U-channel transistor is more sensitive to ambient light, and the use of a U-channel transistor can improve the photosensitivity of the photosensitive device 30.

[0111] Reference Figure 15 The display device 1000 provided in this application includes the display panel 100 of the above-described embodiments. All the beneficial effects of the display device 1000 including the display panel 100 will not be described in detail here.

[0112] In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, without contradiction, those skilled in the art can combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples.

[0113] Furthermore, the term "connection" should be interpreted broadly. For example, it can include fixed connections, detachable connections, or integral connections; it can include direct connections or indirect connections through an intermediate medium; and it can also include internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0114] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0115] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A display panel, characterized in that, include: An array substrate, the array substrate including a display area and a border area surrounding the display area, the substrate including a photosensitive device disposed in the border area; A cover plate is disposed on the array substrate and includes an ink area. The orthographic projection of the ink area on the array substrate is located within the frame area, and the distance between the ink area and the photosensitive device is greater than a preset distance. The preset distance is negatively correlated with the refractive index of the cover plate and positively correlated with the vertical distance from the cover plate to the array substrate.

2. The display panel according to claim 1, characterized in that, The array substrate includes a pixel array, and the photosensitive device is disposed at the middle position on the upper side of the first row of the pixel array.

3. The display panel according to claim 1, characterized in that, The photosensitive device includes a first group of photosensitive transistors and a second group of photosensitive transistors. The display panel includes a filter and a light-shielding film. The filter is disposed on the first group of transistors, and the light-shielding film is disposed on the second group of transistors.

4. The display panel according to claim 3, characterized in that, The first group of photosensitive transistors includes a plurality of sensing transistors connected in parallel, and the second group of photosensitive transistors includes a plurality of reference transistors connected in parallel.

5. The display panel according to claim 4, characterized in that, The first group of photosensitive transistors includes a first subgroup, a second subgroup, and a third subgroup. The filter includes a first color filter, a second color filter, and a third color filter. The first color filter covers the first subgroup, the second color filter covers the second subgroup, and the third color filter covers the third subgroup.

6. The display panel according to claim 5, characterized in that, The first subgroup includes a plurality of first sensing transistors connected in parallel, the second subgroup includes a plurality of second sensing transistors connected in parallel, and the third subgroup includes a plurality of third sensing transistors connected in parallel.

7. The display panel according to claim 6, characterized in that, The array substrate includes a pixel array, and the plurality of sensing transistors and the plurality of reference transistors are arranged along the row direction of the pixel array at the middle position on the upper side of the first row of the pixel array. The second group of photosensitive transistors is disposed on one side of the first group of photosensitive transistors, and the plurality of first sensing transistors, the plurality of second sensing transistors and the plurality of third sensing transistors are arranged alternately.

8. The display panel according to claim 7, characterized in that, The filter also at least partially covers the pixel array, which includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, wherein the first color filter covers the first sub-pixel, the second color filter covers the second sub-pixel, and the third color filter covers the third sub-pixel.

9. The display panel according to claim 6, characterized in that, The array substrate includes a pixel array, and the plurality of sensing transistors and the plurality of reference transistors are arranged along the row direction of the pixel array at the middle position on the upper side of the first row of the pixel array. The second group of photosensitive transistors is disposed on one side of the first group of photosensitive transistors, and the plurality of first sensing transistors, the plurality of second sensing transistors and the plurality of third sensing transistors are arranged along the row direction.

10. The display panel according to claim 9, characterized in that, The array substrate includes an electrostatic ring located between the photosensitive device and the pixel array, and the electrostatic ring at least partially covers the display area.

11. The display panel according to claim 10, characterized in that, The display area includes a display blind zone, which is located between the photosensitive device and the pixel array. The area of ​​the display blind zone is substantially the same as the area occupied by two rows of pixels in the pixel array. The electrostatic ring is located in the display blind zone.

12. The display panel according to claim 1, characterized in that, The photosensitive device includes a U-channel transistor.

13. A display device, characterized in that, The display device includes the display panel as described in any one of claims 1-12.

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