Display panel and manufacturing method, and display apparatus

Abstract

A display panel, comprising a panel body (100) and a driving chip (200), wherein the panel body (100) comprises a photosensitive detection unit (B2) and a photosensitive reference unit (B3), which are located in a non-display area (BB); a photosensitive area of the photosensitive detection unit (B2) is used for detecting the intensity of ambient light and generating an illumination current, and the photosensitive reference unit (B3) is used for generating a reference current; and the driving chip (200) is used for adjusting the display brightness of a display area (AA) on the basis of the illumination current and the reference current.

Description

Display panel, manufacturing method, and display device Technical Field

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

[0002] Ambient light sensors have a wide range of applications, with continued penetration into smart home appliances, the Internet of Things, and other fields, leading to rapidly growing market demand. With this continued expansion of applications, the future of ambient light sensors is bright. As consumer electronics continue to move towards miniaturization and portability, ambient light sensors are also poised to develop towards highly integrated, low-power, and intelligent features.

[0003] The main function of an ambient light sensor is to sense the surrounding light conditions and transmit the information to a processing chip, which then adjusts the screen brightness of the electronic device based on the ambient light data. Specifically, when the ambient light is high, the screen brightness is automatically increased to improve the display quality; when the ambient light is low, the screen brightness is automatically decreased to protect the eyes and reduce power consumption.

[0004] In the related art, the ambient light sensor is set on the backlight side of the screen of the electronic device. However, the separate setting of the ambient light sensor has no direct connection with the screen, which reduces the dimming effect of the screen. At the same time, the separate setting also reduces the space utilization of the electronic device.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0006] Summary of the Invention

[0007] The present disclosure aims to provide a display panel, a manufacturing method thereof, and a display device, which can achieve a high level of ambient light detection and improve the dimming effect of the display panel.

[0008] According to one aspect of the present disclosure, there is provided a display panel, comprising:

[0009] A panel body having a display area and a non-display area located outside the display area, and a binding area located in the non-display area. The panel body includes a photosensitive circuit located in the non-display area, and the photosensitive circuit includes a photosensitive detection unit and a photosensitive comparison unit.

[0010] The panel body includes a first light shielding layer having a light-transmitting hole. The light-sensing detection unit includes a light-sensing area, which is exposed at the light-transmitting hole and is used to detect the intensity of ambient light and generate a light current. The light-sensing comparison unit is shielded by the first light shielding layer and is used to generate a reference current.

[0011] A driver chip is located in the binding area of ​​the panel body and is electrically connected to the light detection unit and the light comparison unit. The driver chip is used to adjust the display brightness of the display area according to the light current and the reference current.

[0012] According to any one of the display panels described in the present disclosure, the panel body includes:

[0013] a gate metal layer, located on a side of the first light-shielding layer away from the light-emitting surface of the panel body, and comprising a conductive portion;

[0014] an active layer, located on a side of the gate metal layer close to the first light-shielding layer, and comprising an active portion, the active portion comprising a channel region, and a first connecting portion and a second connecting portion located on both sides of the channel region, wherein a projection of the channel region in a direction perpendicular to the panel body is located within a projection of the conductive portion in a direction perpendicular to the panel body;

[0015] a source-drain metal layer, located on a side of the active layer close to the first light-shielding layer, and comprising a first connecting line and a second connecting line, wherein the first connecting line and the second connecting line are connected to the first connecting portion and the second connecting portion respectively;

[0016] The first connecting portion and the second connecting portion correspondingly form the first pole and the second pole of the photosensitive detection unit, the area on the conductive portion overlapping with the channel region forms the control pole of the photosensitive detection unit, the channel region forms the photosensitive region of the photosensitive detection unit, and the conductive portion, the first connecting line, and the second connecting line are electrically connected to the driving chip respectively.

[0017] According to any display panel described in the present disclosure, the dimension of the conductive portion extending out of the channel region is greater than or equal to 5 micrometers and less than or equal to 10 micrometers.

[0018] According to any display panel of the present disclosure, the photosensitive circuit includes a first signal trace, and the first signal trace includes a control trace, a first electrode trace, and a second electrode trace;

[0019] The first electrode wiring is the first connecting wire, the second electrode wiring is the second connecting wire, and the control wiring is electrically connected to the control electrode and the driving chip respectively.

[0020] According to any display panel described in the present disclosure, the control wiring is located in the gate metal layer.

[0021] According to any display panel described in the present disclosure, the panel body includes a first conductive layer, the first conductive layer is located on a side of the source / drain metal layer close to the first light shielding layer, and the control wiring is located in the first conductive layer.

[0022] According to any display panel of the present disclosure, the photosensitive circuit includes a first signal trace, and the first signal trace includes a control trace, a first electrode trace, and a second electrode trace;

[0023] The first electrode wiring is the first connecting wire, the second electrode wiring is electrically connected to the second connecting wire and the driving chip respectively, and the control wiring is electrically connected to the control electrode and the driving chip respectively.

[0024] According to any display panel described in the present disclosure, the panel body includes a first conductive layer, the first conductive layer is located on the side of the source and drain metal layer close to the first light-shielding layer, the control line is located in the gate metal layer, and the second electrode line is located in the first conductive layer.

[0025] According to any display panel described in the present disclosure, the length of the channel region is greater than or equal to 1 micrometer and less than or equal to 10 micrometers.

[0026] According to any display panel described in the present disclosure, the width of the channel region is greater than or equal to 2 micrometers and less than or equal to 50 micrometers.

[0027] According to any one of the display panels described in the present disclosure, the panel body includes:

[0028] a base layer, located on a side of the first light-shielding layer away from the light-emitting surface of the panel body, and comprising a base portion;

[0029] a photoelectric conversion layer, located on a side of the base layer close to the first light-shielding layer, and comprising a hole-electron portion, wherein an orthographic projection of the hole-electron portion in a direction perpendicular to the panel body is located within an orthographic projection of the base portion in a direction perpendicular to the panel body;

[0030] a covering layer, located on a side of the photoelectric conversion layer close to the first light-shielding layer, and comprising a covering portion, wherein an orthographic projection of the hole-electron portion in a direction perpendicular to the panel body is located within an orthographic projection of the covering portion in a direction perpendicular to the panel body;

[0031] The base portion and the covering portion correspondingly form the first pole and the second pole of the photosensitive detection unit and are electrically connected to the driving chip respectively. The hole-electron portion faces the surface of the first light-shielding layer to form the photosensitive area of ​​the photosensitive detection unit.

[0032] According to any one of the display panels described in the present disclosure, the photoelectric conversion layer includes a hole semiconductor layer and an electron semiconductor layer, and an intrinsic semiconductor layer located between the hole semiconductor layer and the electron semiconductor layer;

[0033] The hole semiconductor layer includes a hole conductor portion, the electron semiconductor layer includes an electron conductor portion, and the intrinsic semiconductor layer includes an intrinsic conductor portion. The hole conductor portion, the electron conductor portion, and the intrinsic conductor portion all have overlapping areas in a direction perpendicular to the panel body.

[0034] According to any display panel described in the present disclosure, the photosensitive circuit includes a first signal trace, the first signal trace includes a first electrode line and a second electrode line, and the panel body includes a second conductive layer;

[0035] The second conductive layer is located on a side of the cover layer close to the first light shielding layer. One of the first electrode line and the second electrode line is located on the base layer, and the other is located on the second conductive layer.

[0036] According to any display panel described in the present disclosure, the photosensitive area is located in the area surrounded by the light-transmitting holes, and the distance between the edge of the light-transmitting holes and the photosensitive area is greater than or equal to 3 microns and less than or equal to 6 microns.

[0037] According to any display panel described in the present disclosure, the photosensitive circuit includes a plurality of the photosensitive detection units, and the plurality of the photosensitive detection units are electrically connected to the driving chip after being connected in parallel.

[0038] According to any display panel described in the present disclosure, the first light-shielding layer has a strip-shaped light-transmitting hole, and the photosensitive areas of the multiple photosensitive detection units are exposed at the light-transmitting hole.

[0039] According to any display panel described in the present disclosure, the first light-shielding layer has a plurality of light-transmitting holes corresponding one-to-one to the plurality of photosensitive detection units, and the photosensitive area of ​​each photosensitive detection unit is exposed at the corresponding light-transmitting hole.

[0040] According to any one of the display panels of the present disclosure, the active portion includes a channel region, and a plurality of first connection portions located on one side of the channel region and a plurality of second connection portions located on the other side of the channel region;

[0041] The source-drain metal layer includes a plurality of first connection lines corresponding one-to-one to the plurality of first connection parts, and a plurality of second connection lines corresponding one-to-one to the plurality of second connection parts. The plurality of first connection lines and the plurality of second connection lines are electrically connected to the driver chip after being connected in parallel.

[0042] According to any display panel described in the present disclosure, the photosensitive circuit further includes a first signal trace and a second signal trace;

[0043] The first signal line is electrically connected to the light detection unit and the driver chip respectively, and the second signal line is electrically connected to the light control unit and the driver chip respectively;

[0044] The binding area is close to the bottom of the display area, the photosensitivity detection unit and the photosensitivity comparison unit are close to the top of the display area, and the first signal line and the second signal line are respectively distributed on both sides of the display area.

[0045] According to any display panel described in the present disclosure, the photosensitive detection unit and the photosensitive comparison unit, the first signal line and the second signal line are symmetrically distributed along the center line of the display area.

[0046] According to any display panel described in the present disclosure, the photosensitive circuit further includes a first signal trace and a second signal trace;

[0047] The first signal line is electrically connected to the light detection unit and the driver chip respectively, and the second signal line is electrically connected to the light control unit and the driver chip respectively;

[0048] The binding area is close to the bottom of the display area, the photosensitivity detection unit and the photosensitivity comparison unit are close to the top of the display area, and the first signal line and the second signal line are distributed on the same side of the display area.

[0049] According to any display panel of the present disclosure, the first signal wiring and the second signal wiring each include a control wiring, a first electrode wiring, and a second electrode wiring;

[0050] The control line of the first signal line and the control line of the second signal line are the same signal line, the first electrode line of the first signal line and the first electrode line of the second signal line are the same signal line, and the second electrode line of the first signal line and the second electrode line of the second signal line are different signal lines.

[0051] According to any one of the display panels of the present disclosure, the panel body comprises a near-field common signal line and a far-field common signal line located in the non-display area and sequentially distributed at the top of the display area in a direction away from the display area, and a pixel driving circuit and a ground signal line located in the non-display area and sequentially distributed on the same side of the display area in a direction away from the display area;

[0052] The panel body also includes a third conductive layer, the third conductive layer includes a first jumper, the near-field common signal line is electrically connected to the pixel circuit of the display area, the far-field common signal line is electrically connected to the pixel driving circuit through the first jumper, the photosensitive detection unit included in the photosensitive circuit is located between the near-field common signal line and the far-field common signal line, and the first signal line included in the photosensitive circuit is located between the pixel driving circuit and the ground signal line.

[0053] According to any one of the display panels of the present disclosure, the panel body further comprises an anti-static circuit located in the non-display area;

[0054] The anti-static circuit is located between the first signal line and the far-field common signal line, the third conductive layer includes a second jumper, one end of the anti-static circuit is electrically connected to the far-field common signal line, and the other end of the anti-static circuit is electrically connected to the first signal line included in the photosensitive circuit through the second jumper.

[0055] According to any one of the display panels described in the present disclosure, the panel body includes:

[0056] An array substrate having the photosensitive circuit;

[0057] a color filter substrate, located on one side of the array substrate and having the first light-shielding layer;

[0058] The glue frame is located between the array substrate and the color filter substrate, and adheres the array substrate and the color filter substrate to the periphery of the photosensitive circuit.

[0059] According to any display panel described in the present disclosure, the distance between the inner edge of the plastic frame and the photosensitive area of ​​the photosensitive detection unit is greater than or equal to 150 microns.

[0060] According to any display panel described in the present disclosure, the panel body further includes:

[0061] a light guide plate, located on a side of the color filter substrate facing away from the array substrate;

[0062] The front light source is located on a side of the light guide plate away from the array substrate, and a light emitting surface of the front light source faces the light guide plate.

[0063] According to any display panel described in the present disclosure, the orthographic projection of the light guide plate in a direction perpendicular to the array substrate is aligned with at least an edge of the display area, and there is no overlapping area with the photosensitive detection unit.

[0064] According to any display panel described in the present disclosure, the distance between the edge of the light guide plate and the photosensitive area of ​​the photosensitive detection unit is greater than or equal to 0.3 mm.

[0065] According to any display panel described in the present disclosure, the light guide plate has a light-shielding structure on at least the side close to the photosensitive detection unit.

[0066] According to any display panel described in the present disclosure, the distance between the edge of the light guide plate and the photosensitive area of ​​the photosensitive detection unit is greater than or equal to 0.2 mm.

[0067] According to any display panel described in the present disclosure, the light guide plate includes a light guiding area and a light transmitting area, the orthographic projection of the light guiding area in a direction perpendicular to the array substrate covers the display area, and the orthographic projection of the light transmitting area in a direction perpendicular to the array substrate covers the photosensitive detection unit.

[0068] According to any display panel described in the present disclosure, the size of the edge of the light-guiding area and the photosensitive area of ​​the photosensitive detection unit is greater than or equal to 0.2 mm.

[0069] According to any display panel described in the present disclosure, the panel body further includes:

[0070] a backlight source, located on a side of the array substrate facing away from the color filter substrate, with a light emitting surface of the backlight source facing the array substrate;

[0071] The second light-shielding layer is located on a side of the backlight source close to the light-emitting surface and has a light-shielding portion located in the non-display area. The orthographic projection of the light-shielding portion on the array substrate covers the photosensitive detection unit and the photosensitive contrast unit.

[0072] According to one aspect of the present disclosure, a method for manufacturing a display panel is provided, the method comprising:

[0073] A panel body is manufactured, wherein the panel body has a display area, a non-display area located outside the display area, and a binding area located in the non-display area. The panel body includes a photosensitive circuit located in the non-display area, and the photosensitive circuit includes a photosensitive detection unit and a photosensitive comparison unit.

[0074] The panel body includes a first light-shielding layer having a light-transmitting hole. The light-sensing detection unit includes a light-sensing area, which is exposed at the light-transmitting hole and is used to detect the intensity of ambient light and generate a light current. The light-sensing comparison unit is shielded by the light-shielding layer and is used to generate a reference current.

[0075] A driver chip is provided, the driver chip is fixed to the binding area of ​​the panel body, and the driver chip is electrically connected to the photosensitive detection unit and the photosensitive comparison unit respectively. The driver chip is used to adjust the display brightness of the display area according to the illumination current and the reference current.

[0076] According to one aspect of the present disclosure, a display device is provided, comprising the display panel described in the above aspect.

[0077] The embodiments of the present disclosure include at least the following technical effects:

[0078] In the disclosed embodiment, ambient light sensing is decomposed into a photosensitive circuit and a processing module, and the photosensitive circuit is integrated into the display panel, and the processing module is integrated into the driver chip of the display panel, thereby achieving high integration of ambient light detection and avoiding the situation of separately setting an ambient light sensor on the inner side of the display panel, thereby facilitating improvement of space utilization of the display device having the display panel; in addition, the photosensitive detection unit and the photosensitive control unit are both electrically connected to the driver chip, so that when adjusting the display brightness, the reference current detected by the photosensitive control unit is used as a reference to improve the accuracy of the display brightness adjustment of the display area.

[0079] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0081] FIG1 is a schematic diagram of a top view of a display panel provided in an embodiment of the present disclosure.

[0082] FIG2 is a schematic diagram of a cross-sectional structure of a panel body provided in an embodiment of the present disclosure.

[0083] FIG3 is a schematic flow chart of a method for adjusting display brightness of a display panel provided in an embodiment of the present disclosure.

[0084] FIG. 4 is a schematic diagram of an enlarged structure of the panel body in the O1 area shown in FIG. 1 .

[0085] FIG5 is a schematic cross-sectional view of an array substrate provided in an embodiment of the present disclosure.

[0086] FIG6 is a schematic cross-sectional view of another array substrate provided in an embodiment of the present disclosure.

[0087] FIG7 is a schematic diagram of the cross-sectional structure of another panel body provided in an embodiment of the present disclosure.

[0088] FIG8 is a schematic diagram of an enlarged structure of the panel body shown in FIG7 in the O1 area shown in FIG1 .

[0089] FIG9 is a schematic diagram of the cross-sectional structure of another panel body provided in an embodiment of the present disclosure.

[0090] FIG. 10 is a schematic diagram of an enlarged structure of the panel body shown in FIG. 9 in the O1 area shown in FIG. 1 .

[0091] FIG11 is a schematic diagram of the cross-sectional structure of another panel body provided in an embodiment of the present disclosure.

[0092] FIG. 12 is a schematic diagram of an enlarged structure of the panel body shown in FIG. 11 in the O1 area shown in FIG. 1 .

[0093] FIG13 is a schematic diagram of the cross-sectional structure of another panel body provided in an embodiment of the present disclosure.

[0094] FIG14 is a schematic diagram of the cross-sectional structure of a photosensitive detection unit provided in an embodiment of the present disclosure.

[0095] FIG15 is a schematic diagram of a top view of a photosensitive detection unit provided in an embodiment of the present disclosure.

[0096] FIG16 is a schematic cross-sectional view of an array substrate including another type of photosensitive detection unit provided in an embodiment of the present disclosure.

[0097] FIG17 is a schematic diagram of a top view of another photosensitive detection unit provided in an embodiment of the present disclosure.

[0098] FIG18 is a schematic diagram of an enlarged structure of another panel body in the O1 area shown in FIG1 .

[0099] FIG19 is a schematic diagram of a top view of another display panel provided in an embodiment of the present disclosure.

[0100] FIG. 20 is a schematic diagram of an enlarged structure of the display panel shown in FIG. 19 in the O1 region.

[0101] FIG21 is a schematic diagram of the enlarged structure of the panel body in the O2 area shown in FIG1 .

[0102] FIG22 is a schematic cross-sectional view of a jumper structure provided in an embodiment of the present disclosure.

[0103] FIG23 is a schematic cross-sectional view of another jumper structure provided in an embodiment of the present disclosure.

[0104] FIG24 is a schematic diagram of the cross-sectional structure of an anti-static unit provided in an embodiment of the present disclosure.

[0105] FIG25 is a schematic diagram of a top view of another photosensitive detection unit provided in an embodiment of the present disclosure.

[0106] FIG26 is a schematic diagram of a top view of a structure in which multiple photosensitive detection units are connected in parallel according to an embodiment of the present disclosure.

[0107] Figure 27 is a schematic diagram of a top view structure in which multiple photosensitive detection units are blocked, provided by an embodiment of the present disclosure.

[0108] FIG28 is a schematic diagram of a top view of another structure in which multiple photosensitive detection units are blocked, provided in an embodiment of the present disclosure.

[0109] FIG29 is a schematic flow chart of a method for manufacturing a display panel provided in an embodiment of the present disclosure.

[0110] Figure 1: 100, panel body; 200, driver chip; AA, display area; BB, non-display area; B1, binding area; B2, photosensitivity detection unit; B3, photosensitivity comparison unit; B4, first signal line; B5, second signal line; B6, near-field common signal line; B7, far-field common signal line; B8, pixel driving circuit; B9, ground signal line; B10, anti-static circuit; B41, control line; B42, first electrode line; B43, second electrode line; B101, first jumper line; B102, second jumper line; 110, array substrate; 120, color filter substrate; 130, plastic frame; 140, light guide plate; 150, front light source; 160, backlight source; 170, second light shielding layer; 101, first polarizer; 102, first substrate; 103, gate metal layer; 104, gate insulating layer; 105, active layer; 106, source / drain metal layer; 107, first passivation layer; 108, pixel electrode layer; 109, protective layer; 1101, second passivation layer; 111, base layer; 112, photoelectric conversion layer; 113, cover layer; 114, top metal layer; 115, third conductive layer; 1031, conductive portion; 1051, active portion; 1052, channel region; 1053, first connecting portion; 1054, second connecting portion; 1061, first connecting line; 1062, second connecting line; 1111, base portion; 1121, hole / electron portion; 1122, hole / hole semiconductor layer; 1123, electron semiconductor layer; 1124, intrinsic semiconductor layer; 1131, cover portion; 121. Common electrode layer; 122. Color filter layer; 123. First light-shielding layer; 124. Second base substrate; 125. Second polarizer; 1231. Light-transmitting hole; 141. Light-shielding structure; 142. Light-guiding area; 143. Light-transmitting area; 171. Light-shielding portion. DETAILED DESCRIPTION

[0111] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0112] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0113] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0114] A transistor is a device that includes at least three terminals: a gate electrode, a drain electrode, and a source electrode. A transistor has a channel region between a drain electrode (drain electrode terminal, drain region, or drain electrode) and a source electrode (source electrode terminal, source region, or source electrode), through which current can flow. The channel region is the area where current primarily flows.

[0115] The first electrode of a transistor can be a drain electrode, and the second electrode can be a source electrode, or vice versa. The functions of "source electrode" and "drain electrode" may be interchanged when using transistors with opposite polarity or when the direction of current changes during circuit operation. Therefore, in this specification, "source electrode" and "drain electrode" may be interchanged.

[0116] FIG1 illustrates a schematic top view of a display panel provided in an embodiment of the present disclosure, and FIG2 illustrates a schematic cross-sectional view of a panel body provided in an embodiment of the present disclosure. As shown in Figures 1 and 2, the display panel includes: a panel body 100 and a driver chip 200. The panel body 100 has a display area AA and a non-display area BB located outside the display area AA, and a binding area B1 located in the non-display area BB. The panel body 100 includes a photosensitive circuit (not shown in the figure) located in the non-display area BB. The photosensitive circuit includes a photodetection unit B2 and a photocontrol unit B3. The panel body 100 includes a first light-shielding layer 123. The first light-shielding layer 123 has a light-transmitting hole 1231. The photodetection unit B2 has a photosensitive area (not shown in the figure). The photosensitive area is exposed at the light-transmitting hole 1231 and is used to detect the intensity of ambient light and generate a light current. The photocontrol unit B3 is shielded by the first light-shielding layer 123 and is used to generate a reference current. The driver chip 200 is located in the binding area B1 of the panel body 100 and is electrically connected to the photodetection unit B2 and the photocontrol unit B3. The driver chip 200 is used to adjust the display brightness of the display area AA according to the light current and the reference current.

[0117] In the embodiment of the present disclosure, the ambient light sensing is decomposed into a photosensitive circuit and a processing module, and the photosensitive circuit is integrated into the display panel, and the processing module is integrated into the driver chip 200 of the display panel, thereby achieving high integration of ambient light detection, while avoiding the situation of separately setting an ambient light sensor on the inner side of the display panel, thereby facilitating the improvement of space utilization of the display device having the display panel; in addition, the photosensitive detection unit B2 and the photosensitive control unit B3 are both electrically connected to the driver chip 200, so that when adjusting the display brightness, the reference current detected by the photosensitive control unit B3 is used as a reference to improve the accuracy of the display brightness adjustment of the display area AA.

[0118] In the embodiment of the present disclosure, the process of implementing the display brightness adjustment of the display area AA is shown in Figure 3, S1, the ambient light is detected by the photosensitive detection unit B2 and a light current is generated, and the reference current is generated by the photosensitive control unit B3; S2, the driver chip 200 obtains the light current and the reference current, and determines the driving current or driving voltage according to the light current and the reference current; S3, the driver chip 200 then adjusts the display brightness of the display area AA according to the driving current or driving voltage.

[0119] Among them, in the above-mentioned step S2, the specific process of the driver chip 200 determining the driving current or driving voltage based on the light current and the reference current is: the driver chip 200 determines that the difference between the light current and the reference current is the actual light current, and determines the driving current corresponding to the actual light current from the pre-burned comparison table based on the actual light current, thereby improving the adjustment efficiency of the display brightness of the display area AA.

[0120] The driver chip 200 is pre-programmed with a lookup table showing the correspondence between actual light current and drive current. For each set of actual light current and drive current in the lookup table, the actual light current is determined by the difference between the light current generated by the light detection unit B2 and the reference current generated by the light reference unit B3 at a certain light intensity. The drive current is the drive current corresponding to the display brightness of display area AA that the human eye can adapt to at that light intensity.

[0121] In the embodiment of the present disclosure, the panel body 100 may be an LCD panel, or may be another panel structure capable of displaying images, such as an OLED panel. Next, the panel body 100 will be explained in detail using an LCD panel as an example.

[0122] In some embodiments, as shown in FIG. 2 , the panel body 100 includes an array substrate 110 , a color filter substrate 120 , and a plastic frame 130 ; the color filter substrate 120 is located on one side of the array substrate 110 , and the plastic frame 130 is located between the array substrate 110 and the color filter substrate 120 , bonding the array substrate 110 and the color filter substrate 120 .

[0123] The array substrate 110 has a photosensitive circuit located inside the plastic frame 130 , and the color filter substrate 120 has a first light shielding layer 123 .

[0124] In addition, the panel body 100 further includes liquid crystal molecules located between the array substrate 110 and the color filter substrate 120 and within the area enclosed by the plastic frame 130 .

[0125] The array substrate 110 and the color filter substrate 120 each have a display area AA and a non-display area BB located outside the display area AA. The non-display area BB includes a bonding area B1. The photosensitive circuit is located in the non-display area BB of the array substrate 110. The adhesive frame 130 adheres the array substrate 110 and the color filter substrate 120 to each other in the non-display area BB. To prevent the adhesive frame 130 from blocking ambient light and thus affecting the accuracy of ambient light detection by the photosensitive detection unit B2, the distance L1 between the inner edge of the adhesive frame 130 and the photosensitive area of ​​the photosensitive detection unit B2 is optionally greater than or equal to 150 microns. For example, the distance between the inner edge of the adhesive frame 130 and the photosensitive area of ​​the photosensitive detection unit B2 is 150 microns, 180 microns, 210 microns, 240 microns, etc.

[0126] For example, as shown in Figure 4, the width W1 of the frame 130 is 800 microns, and the distance L2 between the inner edge of the frame 130 and the display area AA is 460 microns. At this time, the distance L1 between the inner edge of the frame 130 and the photosensitive area of ​​the photosensitive detection unit B2 can be set to 206.55 microns, and the distance L3 between the display area AA and the photosensitive area of ​​the photosensitive detection unit B2 is set to 217.6 microns.

[0127] In some embodiments, as shown in FIG5 , the array substrate 110 includes a first polarizer 101, a first base substrate 102, a gate metal layer 103, a gate insulating layer 104, an active layer 105, a source / drain metal layer 106, a first passivation layer 107, a pixel electrode layer 108, and a protective layer 109, which are sequentially arranged in a direction close to the color filter substrate 120. As shown in FIG2 , the color filter substrate 120 includes a common electrode layer 121, a color filter layer 122, a first light shielding layer 123, a second base substrate 124, and a second polarizer 125, which are sequentially arranged in a direction away from the array substrate 110. The color filter layer 122 and the first light shielding layer 123 can be located on the same layer.

[0128] In addition, the array substrate 110 also includes a first alignment film close to the color film substrate 120, and the color film substrate 120 also includes a second alignment film close to one side of the array substrate 110. The liquid crystal molecules are located between the first alignment film and the second alignment film, so that the long axis direction of the liquid crystal molecules can be determined by the first alignment film and the second alignment film.

[0129] In other embodiments, as shown in FIG6 , the array substrate 110 includes a first polarizer 101, a first base substrate 102, a gate metal layer 103, a gate insulating layer 104, an active layer 105, a source / drain metal layer 106, a first passivation layer 107, a pixel electrode layer 108, a second passivation layer 1101, a common electrode layer 121, and a protective layer 109, which are sequentially arranged in a direction close to the color filter substrate 120. As shown in FIG7 , the color filter substrate 120 includes a color filter layer 122, a first light shielding layer 123, a second base substrate 124, and a second polarizer 125, which are sequentially arranged in a direction away from the array substrate 110. The color filter layer 122 and the first light shielding layer 123 may be located on the same layer.

[0130] In addition, the array substrate 110 also includes a first alignment film close to the color film substrate 120, and the color film substrate 120 also includes a second alignment film close to one side of the array substrate 110. The liquid crystal molecules are located between the first alignment film and the second alignment film, so that the long axis direction of the liquid crystal molecules can be determined by the first alignment film and the second alignment film.

[0131] In some embodiments, as shown in Figure 2 or Figure 7, the panel body 100 also includes: a light guide plate 140 and a front light source 150, the light guide plate 140 is located on the side of the color filter substrate 120 away from the array substrate 110; the front light source 150 is located on the side of the light guide plate 140 away from the array substrate 110, and the light emitting surface of the front light source 150 faces the light guide plate 140.

[0132] The front light source 150 is electrically connected to the driver chip 200, so that the driver chip 200 controls the luminous intensity of the front light source 150, thereby controlling the display brightness of the display panel. Light guide points are distributed on the light guide plate 140, at least in the area covering the display area AA, to homogenize the light emitted by the front light source 150. The orthographic projection of the front light source 150 on the light guide plate 140 is located within the area where the light guide plate 140 is located. The edge of the light guide plate 140 is flush with the edge of the front light source 150, ensuring that the light guide plate 140 can homogenize the light emitted by the entire luminous area of ​​the front light source 150.

[0133] Optionally, as shown in Figures 7 and 8 , the orthographic projection of the light guide plate 140 in a direction perpendicular to the array substrate 110 is aligned with at least the edge of the display area AA and does not overlap with the photosensitive detection unit B2. In this way, by arranging the light guide plate 140 to avoid the photosensitive detection unit B2, the photosensitive detection unit B2 can be protected from the light emitted by the front light source 150, thereby ensuring the accuracy of the ambient light detection unit B2's detection, and further ensuring the accuracy of the driver chip 200's adjustment of the display brightness of the display area AA.

[0134] Among them, in order to effectively prevent the photosensitive detection unit B2 from being affected by the light emitted by the front light source 150, as shown in Figure 8, the distance L4 between the edge of the light guide plate 140 and the photosensitive area of ​​the photosensitive detection unit B2 can be set to be greater than or equal to 0.3 mm. For example, the distance L4 between the edge of the light guide plate 140 and the photosensitive area of ​​the photosensitive detection unit B2 is 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, etc. Of course, the distance L4 between the edge of the light guide plate 140 and the photosensitive area of ​​the photosensitive detection unit B2 can also be set to be slightly less than 0.3 mm, such as 0.28 mm, etc., as long as the photosensitive detection unit B2 can be prevented from being affected by the light emitted by the front light source 150, and the embodiments of the present disclosure are not limited to this.

[0135] 9 and 10 , the light guide plate 140 has a light shielding structure 141 at least on the side close to the light sensing detection unit B2. Thus, the light shielding structure 141 can further prevent the light sensing detection unit B2 from being affected by the light emitted by the front light source 150.

[0136] Among them, the light-shielding structure 141 can be a light-shielding tape, etc. In the case of setting a light-shielding tape, the distance between the edge of the light guide plate 140 and the photosensitive area of ​​the photosensitive detection unit B2 can be further reduced. For example, as shown in Figure 10, the spacing L4 between the edge of the light guide plate 140 and the photosensitive area of ​​the photosensitive detection unit B2 can be set to be greater than or equal to 0.2 mm. For example, the spacing L4 between the edge of the light guide plate 140 and the photosensitive area of ​​the photosensitive detection unit B2 is 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, etc. Of course, the spacing L4 between the edge of the light guide plate 140 and the photosensitive area of ​​the photosensitive detection unit B2 can also be set to be slightly less than 0.2 mm, such as 0.18 mm, etc., as long as the photosensitive detection unit B2 can be prevented from being affected by the light emitted by the front light source 150 under the light-shielding effect of the light-shielding structure 141, and the embodiments of the present disclosure do not limit this.

[0137] In addition, by further reducing the distance between the edge of the light guide plate 140 and the photosensitive area of ​​the photosensitive detection unit B2, the size occupied by the photosensitive detection unit B2 in the non-display area BB can be effectively compressed, thereby reducing the frame size of the display panel and realizing a narrow frame of the display device having the display panel.

[0138] In other embodiments, as shown in Figures 11 and 12, the light guide plate 140 includes a light guiding area 142 and a light transmitting area 143, the orthographic projection of the light guiding area 142 in the direction perpendicular to the array substrate 110 covers the display area AA, and the orthographic projection of the light transmitting area 143 in the direction perpendicular to the array substrate 110 covers the photosensitive circuit.

[0139] In this way, by setting the light guide area 142 and the light transmission area 143 on the light guide plate 140, not only is the light guide plate 140 guaranteed to uniformly transmit the light emitted by the front light source 150, but the influence of the light emitted by the front light source 150 on the photosensitive detection unit B2 is also avoided.

[0140] The light guide plate 140 includes a light guide area 142 with light guide dots, and a light transmission area 143 without light guide dots, so as to achieve uniformity of the light beam in the light guide area 142 and transmission of the light beam in the light transmission area 143 .

[0141] Optionally, the orthographic projection of the front light source 150 on the light guide plate 140 is aligned with the edge of the light guide area 142 on the light guide plate 140 to further avoid the influence of the light emitted by the front light source 150 on the photosensitive detection unit B2.

[0142] Optionally, the size of the edge of the light-guiding area 142 and the photosensitive area of ​​the photosensitive detection unit B2 is greater than or equal to 0.2 mm, so as to effectively prevent the light emitted by the front light source 150 from passing through the light-guiding area 142 into the photosensitive area of ​​the photosensitive detection unit B2 and crosstalking with the ambient light entering the photosensitive area of ​​the photosensitive detection unit B2. For example, the spacing between the edge of the light-guiding area 142 and the photosensitive area of ​​the photosensitive detection unit B2 is 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, etc. Of course, the spacing between the edge of the light-guiding area 142 and the photosensitive area of ​​the photosensitive detection unit B2 can also be set to be slightly less than 0.2 mm, such as 0.18 mm, etc., as long as it can prevent the light emitted by the front light source 150 from passing through the light-guiding area 142 into the photosensitive area of ​​the photosensitive detection unit B2 and crosstalking with the ambient light entering the photosensitive area of ​​the photosensitive detection unit B2, the embodiments of the present disclosure are not limited to this.

[0143] It should be noted that, with respect to the photosensitive control unit B3 included in the photosensitive circuit, since the first light shielding layer 123 included in the panel body 100 is located directly above and covers the photosensitive control unit B3, when the panel body 100 includes a front light source 150, the light emitted by the front light source 150 does not enter the photosensitive control unit B3, thereby preventing the light emitted by the front light source 150 from affecting the photosensitive control unit B3. Furthermore, in the case where neither the photosensitive detection unit B2 nor the photosensitive control unit B3 is affected by the front light source 150, the referenceability of the photosensitive control unit B3 is ensured, thereby improving the accuracy of the driver chip 200 in adjusting the display brightness based on the illumination current generated by the photosensitive detection unit B2 and the reference current generated by the photosensitive control unit B3.

[0144] In other embodiments, as shown in FIG. 13 , the panel body 100 further includes a backlight source 160 , which is located on a side of the array substrate 110 facing away from the color filter substrate 120 , and a light emitting surface of the backlight source 160 faces the array substrate 110 .

[0145] The backlight source 160 is electrically connected to the driver chip 200 , so that the driver chip 200 controls the light intensity of the backlight source 160 , thereby controlling the display brightness of the display panel.

[0146] Optionally, the light emitted by the backlight source 160 can illuminate the photosensitive detection unit B2 and the photosensitive control unit B3 of the photosensitive circuit to ensure the same environment of the photosensitive detection unit B2 and the photosensitive control unit B3, thereby ensuring the referenceability of the photosensitive control unit B3 and improving the accuracy of the driver chip 200 in adjusting the display brightness according to the illumination current generated by the photosensitive detection unit B2 and the reference current generated by the photosensitive control unit B3.

[0147] Optionally, as shown in FIG13 , the panel body 100 further includes a second light-shielding layer 170. The second light-shielding layer 170 is located on a side of the backlight source 160 near the light-emitting surface. The second light-shielding layer 170 includes a light-shielding portion 171 located in the non-display area BB. The orthographic projection of the light-shielding portion 171 on the array substrate 110 covers the photosensitive detection unit B2 and the photosensitive reference unit B3. Thus, the provision of the light-shielding portion 171 prevents the light emitted by the backlight source 160 from affecting the photosensitive detection unit B2 and the photosensitive reference unit B3, thereby ensuring that the environments in which the photosensitive detection unit B2 and the photosensitive reference unit B3 are located are identical. This ensures the reference value of the photosensitive reference unit B3 and improves the accuracy of the driver chip 200 in adjusting the display brightness based on the illumination current generated by the photosensitive detection unit B2 and the reference current generated by the photosensitive reference unit B3.

[0148] Among them, the second shading layer 170 can be located between the backlight source 160 and the array substrate 110, or it can be a film layer included in the array substrate 110, as long as it can block the light emitted by the backlight source 160 from irradiating the photosensitive detection unit B2 and the photosensitive control unit B3.

[0149] In the disclosed embodiments, the light-sensing detection unit B2 included in the light-sensing circuit can be a transistor unit, or a photodiode unit (a PN junction unit, a PIN junction unit), etc., as long as it can detect ambient light and generate a corresponding light current or light voltage. The structure of the light-sensing comparison unit B3 is the same as that of the light-sensing detection unit B2 to ensure referenceability.

[0150] Next, the photosensitive detection unit B2 is explained in detail as a transistor unit and a photodiode unit. For the specific structure of the photosensitive control unit B3, reference can be made to the photosensitive detection unit B2, which will not be described in detail in the present embodiment.

[0151] For the case where the photosensitive detection unit B2 is a transistor, in some embodiments, the panel body 100 includes: a gate metal layer 103, an active layer 105 and a source-drain metal layer 106, the gate metal layer 103 is located on the side of the first light-shielding layer 123 away from the light-emitting surface of the panel body 100; the active layer 105 is located on the side of the gate metal layer 103 close to the first light-shielding layer 123; the source-drain metal layer 106 is located on the side of the active layer 105 close to the first light-shielding layer 123.

[0152] As shown in Figures 5 and 14, the gate metal layer 103 includes a conductive portion 1031; the active layer 105 includes an active portion 1051, the active portion 1051 includes a channel region 1052, and a first connecting portion 1053 and a second connecting portion 1054 located on both sides of the channel region 1052, and the projection of the channel region 1052 in the direction perpendicular to the panel body 100 is located within the projection of the conductive portion 1031 in the direction perpendicular to the panel body 100; the source-drain metal layer 106 includes a first connecting line 1061 and a second connecting line 1062, and the first connecting line 1061 and the second connecting line 1062 are respectively connected to the first connecting portion 1053 and the second connecting portion 1054.

[0153] Among them, the first connecting part 1053 and the second connecting part 1054 correspond to form the first pole and the second pole of the photosensitive detection unit B2, the area on the conductive part 1031 overlapping with the channel area 1052 forms the control pole of the photosensitive detection unit B2, the channel area 1052 forms the photosensitive area of ​​the photosensitive detection unit B2, and the conductive part 1031, the first connecting line 1061, and the second connecting line 1062 are respectively electrically connected to the driving chip 200.

[0154] In this way, a bias voltage can be applied between the control electrode and the first electrode of the photosensitive detection unit B2, and a bias voltage can be applied between the first electrode and the second electrode of the photosensitive detection unit B2 through the driving chip 200, so that when the ambient light irradiates the channel area 1052, the current flowing through the channel area 1052 changes, and increases with the increase of the light intensity, thereby realizing the detection of the ambient light and generating the corresponding light current.

[0155] For example, the driver chip 200 can apply a bias voltage of -5 to 5V between the control electrode and the first electrode of the light detection unit B2, and a bias voltage of 1 to 15V between the first electrode and the second electrode of the light detection unit B2 to achieve detection of ambient light.

[0156] Optionally, as shown in FIG15 , the dimension L5 of the conductive portion 1031 extending beyond the channel region 1052 is greater than or equal to 5 microns and less than or equal to 10 microns. This prevents reflection or refraction of the light beam from other film layers within the panel body 100 located on the side of the gate metal layer 103 away from the active layer 105, thereby preventing the channel region 1052 from being affected by reflection or refraction of the light beam. This could affect the accuracy of ambient light detection by the channel region 1052. For example, the dimension L5 of the conductive portion 1031 extending beyond the channel region 1052 is 5 microns, 6 microns, 7 microns, 8 microns, 9 microns, 10 microns, etc. Of course, the dimension L5 of the conductive portion 1031 extending beyond the channel region 1052 could also be slightly less than 5 microns, such as 4.5 microns, as long as it prevents reflection or refraction of the light beam from other film layers located on the side of the gate metal layer 103 away from the active layer 105 from being affected by reflection or refraction of the light beam from other film layers located on the side of the gate metal layer 103 away from the active layer 105.

[0157] Optionally, the channel region 1052 included in the photosensitive detection unit B2 as a photosensitive region may be a linear structure, a U-shaped structure, an L-shaped structure, etc. For example, as shown in FIG15 , the channel region 1052 is a U-shaped structure.

[0158] In addition, as shown in FIG15 , the length L of the channel region 1052 is greater than or equal to 1 micron and less than or equal to 10 microns. Thus, by limiting the minimum length of the channel region 1052, the minimum area of ​​the channel region 1052 is ensured, thereby ensuring the minimum area of ​​the photosensitive region, thereby achieving effective detection of ambient light. By limiting the maximum length of the channel region 1052, the current path length of the channel region 1052 is reduced, thereby avoiding the situation where the light current generated by the photosensitive detection unit B2 is small due to the large internal resistance of the channel region 1052 and cannot be detected by the driver chip 200. For example, the length L of the channel region 1052 is 1 micron, 3 microns, 5 microns, 7 microns, 9 microns, 10 microns, etc.

[0159] As shown in FIG15 , the width W of the channel region 1052 is greater than or equal to 2 microns and less than or equal to 50 microns. Thus, by limiting the minimum width of the channel region 1052, the flow area of ​​the current in the channel region 1052 is guaranteed, thereby ensuring that the light current generated by the photodetection unit B2 is large, that is, avoiding the situation where the light current generated by the photodetection unit B2 is small due to the large internal resistance of the channel region 1052. By limiting the maximum width of the channel region 1052, the overall size of the channel region 1052 is limited, avoiding the situation where the size of the photodetection unit B2 is too large, resulting in a wide frame of the display device having the display panel. For example, the width of the channel region 1052 is 2 microns, 5 microns, 10 microns, 20 microns, 30 microns, 40 microns, 50 microns, etc.

[0160] In addition, as shown in FIG1 , the photosensitive circuit includes not only the photosensitive detection unit B2 but also a first signal line B4 connecting the photosensitive detection unit B2 and the driver chip 200 . The first signal line B4 connects the photosensitive detection unit B2 and the driver chip 200 , respectively.

[0161] In combination with the specific structure of the photosensitive detection unit B2, as shown in Figure 4, the first signal trace B4 specifically includes a control trace B41, a first electrode trace B42, and a second electrode trace B43; the control trace B41 connects the control electrode of the photosensitive detection unit B2 and the driver chip 200, the first electrode trace B42 connects the first electrode of the photosensitive detection unit B2 and the driver chip 200, and the second electrode trace B43 connects the second electrode of the photosensitive detection unit B2 and the driver chip 200.

[0162] In some embodiments, the first electrode trace B42 is the first connection line 1061 located in the source-drain metal layer 106 , and the second electrode trace B43 is the second connection line 1062 located in the source-drain metal layer 106 .

[0163] Optionally, the control trace B41 is located in the gate metal layer 103, that is, the gate metal layer 103 has the control trace B41. In this way, the control trace B41 can be provided on the same layer as the conductive portion 1031 of the gate metal layer 103. That is, the conductive portion 1031 of the photosensitive detection unit B2 and the control trace B41 included in the first signal trace B4 can be simultaneously formed through a single mask process, thereby simplifying the manufacturing process of the panel body 100.

[0164] Optionally, the panel body 100 includes a first conductive layer, and the control trace B41 is located in the first conductive layer. The first conductive layer can be located on the side of the source / drain metal layer 106 near the first light shielding layer 123. In this case, in conjunction with the aforementioned case where the panel body 100 is an LCD panel, the first conductive layer is the pixel electrode layer 108, and the pixel electrode layer 108 has the control trace B41. Alternatively, when the array substrate 110 includes a common electrode layer 121, the first conductive layer is the common electrode layer 121, and the pixel electrode layer 108 has the control trace B41. Of course, the first conductive layer can also be located on the side of the source / drain metal layer 106 away from the first light shielding layer 123, as long as it is insulated from the gate metal layer 103, the active layer 105, and the source / drain metal layer 106. For example, the first conductive layer can be a separately provided gate metal layer 103, the active layer 105, the source / drain metal layer 106, or a separately provided metal layer, and the separately provided metal layer has the control trace B41.

[0165] In other embodiments, the first electrode trace B42 is the aforementioned first connection line 1061 located in the source / drain metal layer 106 , and the second electrode trace B43 is electrically connected to the second connection line 1062 and the driver chip 200 .

[0166] Optionally, the control trace B41 is located in the gate metal layer 103, that is, the gate metal layer 103 has the control trace B41. In this way, the control trace B41 can be provided on the same layer as the conductive portion 1031 of the gate metal layer 103. That is, the conductive portion 1031 of the photosensitive detection unit B2 and the control trace B41 included in the first signal trace B4 can be simultaneously formed through a single mask process, thereby simplifying the manufacturing process of the panel body 100.

[0167] Optionally, the panel body 100 includes a first conductive layer, and the second electrode trace B43 is located in the first conductive layer. The first conductive layer can be located on the side of the source / drain metal layer 106 near the first light shielding layer 123. In this case, in conjunction with the aforementioned case where the panel body 100 is an LCD panel, the first conductive layer is the pixel electrode layer 108, and the pixel electrode layer 108 has the second electrode trace B43. Alternatively, when the array substrate 110 includes a common electrode layer 121, the first conductive layer is the common electrode layer 121, and the pixel electrode layer 108 has the second electrode trace B43. Of course, the first conductive layer can also be located on the side of the source / drain metal layer 106 away from the first light shielding layer 123, as long as it is insulated from the gate metal layer 103, the active layer 105, and the source / drain metal layer 106. For example, the first conductive layer can be a separately provided gate metal layer 103, the active layer 105, the source / drain metal layer 106, or a separately provided metal layer, and the separately provided metal layer has the second electrode trace B43.

[0168] For the case where the photosensitive detection unit B2 is a photodiode unit, in some embodiments, as shown in Figures 16 and 17, the panel body 100 includes a base layer 111, a photoelectric conversion layer 112 and a covering layer 113, the base layer 111 is located on the side of the first light-shielding layer 123 away from the light-emitting surface of the panel body 100, and includes a base portion 1111; the photoelectric conversion layer 112 is located on the side of the base layer 111 close to the first light-shielding layer 123, and includes a hole electron portion 1121; the covering layer 113 is located on the side of the photoelectric conversion layer 112 close to the first light-shielding layer 123, and includes a covering portion 1131; the base portion 1111 and the covering portion 1131 correspondingly form the first pole and the second pole of the photosensitive detection unit B2, and are respectively electrically connected to the driving chip 200, and the hole electron portion 1121 faces the surface of the first light-shielding layer 123 to form a photosensitive area of ​​the photosensitive detection unit B2.

[0169] As shown in Figure 17, there are overlapping areas between the base 1111 and the hole electron part 1121, and between the covering part 1131 and the hole electron part 1121 in the direction perpendicular to the panel body 100, so that after the photosensitive area of ​​the hole electron part 1121 receives the irradiation of ambient light, the holes and electrons formed can be respectively gathered on the base 1111 and the covering part 1131, and then after the base 1111 and the covering part 1131 of the photosensitive detection unit B2 are respectively electrically connected to the driving chip 200, the driving chip 200 can detect the light current generated by the hole electron part 1121 without applying a bias voltage to the base 1111 and the covering part 1131. Of course, a bias voltage can also be applied to the base 1111 and the covering part 1131 of the photosensitive detection unit B2 to increase the light current generated by the hole electron part 1121 under the irradiation of ambient light, thereby facilitating the driver chip 200 to obtain a light current with a larger value, that is, facilitating the driver chip 200 to detect a light current with a larger value.

[0170] Optionally, as shown in Figure 17, the orthographic projection of the hole electron portion 1121 in the direction perpendicular to the panel body 100 is located within the orthographic projection of the base portion 1111 in the direction perpendicular to the panel body 100. This ensures that one of the holes and electrons generated by the hole electron portion 1121 after being exposed to light is completely concentrated on the base portion 1111, and increases the current flow area, reduces the resistance between the hole electron portion 1121 and the base portion 1111, and ensures that the light current generated by the photosensitive detection unit B2 is large; in addition, the hole electron portion 1121 can be shielded by the base portion 1111 to prevent the film layer located on the side of the base portion 1111 away from the first light-shielding layer 123 from reflecting or refracting the light beam onto the hole electron portion 1121, thereby ensuring the accuracy of the ambient light detection unit B2.

[0171] Optionally, as shown in Figure 17, the orthographic projection of the hole electron portion 1121 in the direction perpendicular to the panel body 100 is located within the orthographic projection of the covering portion 1131 in the direction perpendicular to the panel body 100. This ensures that the holes and electrons generated by the hole electron portion 1121 after being exposed to light are completely concentrated on the covering portion 1131, and increases the current flow area, reduces the resistance between the hole electron portion 1121 and the covering portion 1131, and ensures that the light current generated by the photosensitive detection unit B2 is large.

[0172] Optionally, for the base layer 111 included in the panel body 100, in combination with the above-mentioned situation that the panel body 100 is an LCD panel, the base layer 111 can be the source-drain metal layer 106, that is, the source-drain metal layer 106 also includes a base portion 1111. Of course, the base layer 111 can also be the gate metal layer 103 or the active layer 105, etc., and the embodiments of the present disclosure are not limited to this. In addition, for the photoelectric conversion layer 112 and the covering layer 113 included in the panel body 100, they can be sequentially arranged on the side of the base layer 111 close to the first light-shielding layer 123, and in combination with the above-mentioned structure that the panel body 100 is an LCD panel, as shown in Figure 16, the photoelectric conversion layer 112 and the covering layer 113 can be located in the film layers sequentially arranged between the source-drain metal layer 106 and the first passivation layer 107.

[0173] In some embodiments, the photoelectric conversion layer 112 includes a hole semiconductor layer 1122 and an electron semiconductor layer 1123 .

[0174] The hole semiconductor layer 1122 includes a hole conductor portion, and the electron semiconductor layer 1123 includes an electron conductor portion. The hole conductor portion and the electron conductor portion overlap in a direction perpendicular to the panel body 100. In this way, the hole conductor portion and the electron conductor portion form a PN junction photodiode. When exposed to ambient light, the photodiode generates a self-electric field with electrons on one side and holes on the other, thereby facilitating detection of ambient light.

[0175] Optionally, the edges of the hole conductor portion and the electron conductor portion are aligned to increase the overlapping area of ​​the hole conductor portion and the electron conductor portion in a direction perpendicular to the panel body 100, thereby increasing the number of holes and electrons formed in the hole-electron portion 1121. Alternatively, the hole semiconductor layer 1122 may be located on a side close to the cover layer 113, and the electron semiconductor layer 1123 may be located on a side close to the base layer 111. In this case, the holes formed by the hole conductor portion can be gathered by the cover portion 1131, and the electron semiconductor layer 1123 may be located on a side close to the cover layer 113. In this case, the holes formed by the hole conductor portion can be gathered by the base portion 1111, and the electron semiconductor layer 1123 may be located on a side close to the cover layer 113. In this case, the holes formed by the hole conductor portion can be gathered by the base portion 1111, and the electron conductor portion can be gathered by the cover portion 1131.

[0176] In other embodiments, as shown in FIG. 16 , the photoelectric conversion layer 112 includes a hole semiconductor layer 1122 , an electron semiconductor layer 1123 , and an intrinsic semiconductor layer 1124 located between the hole semiconductor layer 1122 and the electron semiconductor layer 1123 .

[0177] The hole semiconductor layer 1122 includes a hole conductor portion, the electron semiconductor layer 1123 includes an electron conductor portion, and the intrinsic semiconductor layer 1124 includes an intrinsic conductor portion. The hole conductor portion, the electron conductor portion, and the intrinsic conductor portion all overlap in a direction perpendicular to the panel body 100. In this way, the hole conductor portion, the intrinsic semiconductor portion, and the electron conductor portion form an intrinsic photodiode with a PIN junction. When exposed to ambient light, the intrinsic photodiode generates a self-electric field with electrons on one side and holes on the other, facilitating detection of ambient light.

[0178] Optionally, the edges of the hole conductor portion, the intrinsic conductor portion, and the electron conductor portion are aligned to increase the overlapping area of ​​the hole conductor portion, the intrinsic conductor portion, and the electron conductor portion in a direction perpendicular to the panel body 100, thereby increasing the number of holes and electrons formed in the hole-electron portion 1121. Alternatively, the hole semiconductor layer 1122 may be located on a side close to the cover layer 113, and the electron semiconductor layer 1123 may be located on a side close to the base layer 111. In this case, the cover portion 1131 can be used to collect holes formed by the hole conductor portion, and the base portion 1111 can be used to collect electrons formed by the electron conductor portion. Of course, the hole semiconductor layer 1122 may also be located on a side close to the base layer 111, and the electron semiconductor layer 1123 may be located on a side close to the cover layer 113. In this case, the base portion 1111 can be used to collect holes formed by the hole conductor portion, and the cover portion 1131 can be used to collect electrons formed by the electron conductor portion.

[0179] In addition, as shown in Figure 1, the photosensitive circuit includes not only the photosensitive detection unit B2, but also a first signal line B4 connecting the photosensitive detection unit B2 and the driver chip 200. Combined with the specific structure of the photosensitive detection unit B2, as shown in Figure 18, the first signal line B4 specifically includes a first electrode line B42 and a second electrode line B43. The first electrode line B42 connects the base 1111 of the photosensitive detection unit B2 and the driver chip 200, and the second electrode line B43 connects the covering part 1131 of the photosensitive detection unit B2 and the driver chip 200.

[0180] In some embodiments, the panel body 100 includes a second conductive layer located on a side of the cover layer 113 close to the first light shielding layer 123. One of the first electrode line and the second electrode line is located on the base layer 111, and the other is located on the second conductive layer.

[0181] For example, the first electrode line is located on the base layer 111, and the second electrode line is located on the second conductive layer. At this time, in combination with the above-mentioned case where the panel base layer 111 is an LCD panel, the second conductive layer can be the pixel electrode layer 108 included in the array substrate 110, and the pixel electrode layer 108 has the second electrode line; or when the array substrate 110 includes a common electrode layer 121, the second conductive layer can be the common electrode layer 121, and the common electrode layer 121 has the second electrode line. Of course, the panel body 100 can also include a top metal layer 114 located on the side of the pixel electrode layer 108 close to the first light shielding layer 123 (located on the side of the second passivation layer 1101 close to the first light shielding layer 123). In this case, the second conductive layer can be the top metal layer 114, and the top metal layer 114 has the second electrode trace B43.

[0182] In the embodiment of the present disclosure, for the photosensitive detection unit B2 and the photosensitive control unit B3 included in the photosensitive circuit, as shown in Figure 1 or Figure 19, the photosensitive circuit also includes a first signal line B4 and a second signal line B5, the first signal line B4 is electrically connected to the photosensitive detection unit B2 and the driver chip 200, respectively, and the second signal line B5 is electrically connected to the photosensitive control unit B3 and the driver chip 200, respectively.

[0183] Optionally, as shown in FIG1 or FIG19 , the binding area B1 is located near the bottom of the display area AA, and the light sensing circuit includes a light sensing detection unit B2 and a light sensing comparison unit B3 located near the top of the display area AA. Of course, the light sensing detection unit B2 and the light sensing comparison unit B3 may also be located on the same side of the display area AA, or on opposite sides of the display area AA, and this is not limited in the present embodiment.

[0184] The same side of the display area AA involved in the present disclosure refers to the left side or the right side of the display area AA, and the two sides of the display area AA refer to the left side and the right side of the display area AA.

[0185] When the light-sensing detection unit B2 and the light-sensing comparison unit B3 are disposed at the top of the display area AA, the first signal trace B4 and the second signal trace B5 can be distributed on either side of the display area AA, as shown in FIG1 , or the first signal trace B4 and the second signal trace B5 can be distributed on the same side of the display area AA. For example, as shown in FIG19 , the first signal trace B4 and the second signal trace B5 are distributed on the left side of the display area AA.

[0186] When the first signal line B4 and the second signal line B5 are located on different sides of the display area AA, a light detection unit B2 and a light comparison unit B3 can be provided, and the first signal line B4 and the second signal line B5 can be symmetrically distributed along the centerline of the display area AA. This ensures that the routing length of the first signal line B4 is equal to the routing length of the second signal line B5, avoiding the situation where the internal resistance of the two signal lines is different due to the different routing lengths, thereby preventing the relative reference of the light comparison unit B3 from being poor.

[0187] When the first signal line B4 and the second signal line B5 are located on the same side of the display area AA, in order to ensure the referenceability of the photosensitive control unit B3, the driver chip 200 applies the same bias voltage to the photosensitive detection unit B2 and the photosensitive control unit B3. At this time, part of the first signal line B4 and part of the second signal line B5 can share the same line to reduce wiring difficulty.

[0188] For example, in the case where both the first signal route B4 and the second signal route B5 include a first electrode route B42 and a second electrode route B43, the first electrode route B42 of the first signal route B4 and the first electrode route B42 of the second signal route B5 can be set as the same signal route, and the second electrode route B43 of the first signal route B4 and the second electrode route B43 of the second signal route B5 can be set as different signal routes.

[0189] For example, as shown in Figure 20, for the case where the first signal route B4 and the second signal route B5 both include a control route B41, a first electrode route B42 and a second electrode route B43, the control route B41 of the first signal route B4 and the control route B41 of the second signal route B5 can be set as the same signal route, the first electrode route B42 of the first signal route B4 and the first electrode route B42 of the second signal route B5 are the same signal route, and the second electrode route B43 of the first signal route B4 and the second electrode route B43 of the second signal route B5 are different signal routes.

[0190] In the above two examples, for the two traces of the same signal trace (such as the control trace B41 and the first electrode trace B42), the end of the same signal trace electrically connected to the photosensitive detection unit B2 and the photosensitive control unit B3 can be extended to the midpoint between the photosensitive detection unit B2 and the photosensitive control unit B3, and then electrically connected to the photosensitive detection unit B2 and the photosensitive control unit B3 respectively. As for the second electrode trace B43 of the first signal trace B4 and the second electrode trace B43 of the second signal trace B5, the local width of the second electrode trace B43 located on the outside of the second electrode trace B43 of the first signal trace B4 and the second electrode trace B43 of the second signal trace B5 can be set to be larger than the local width of the second electrode trace B43 located on the inside. In this way, the trace resistance between the photosensitive detection unit B2 and the driver chip 200 and the trace resistance between the photosensitive control unit B3 and the driver chip 200 can be equal, thereby ensuring the referenceability of the photosensitive control unit B3.

[0191] In the embodiment of the present disclosure, the display area AA of the panel body 100 has an array-distributed pixel circuit, and the non-display area BB of the panel body 100 has, in addition to the photosensitive circuit, a common signal line, a ground signal line B9 and a pixel driving circuit B8. The pixel circuit, the common signal line and the pixel driving circuit B8 are all electrically connected to the driving chip 200, so as to realize the display of the image in the display area AA through the drive of the driving chip 200, and at the same time realize the adjustment of the display brightness of the display area AA.

[0192] The connection relationship between the common signal line and the ground signal line B9 may be specifically referred to in related technologies. For example, the common signal line is electrically connected to the pixel circuit of the display area AA and the pixel driving circuit B8 of the non-display area BB.

[0193] In view of the above-mentioned situation that the panel body 100 is an LCD panel and the array substrate 110 includes a pixel electrode layer 108 and a common electrode layer 121 , the common signal lines of the non-display area BB are divided into near-field common signal lines B6 and far-field common signal lines B7 .

[0194] Optionally, as shown in Figures 20 and 21, the panel body 100 has a near-field common signal line B6 and a far-field common signal line B7 located in the non-display area BB and distributed in sequence at the top of the display area AA in a direction away from the display area AA, and a pixel driving circuit B8 and a ground signal line B9 located in the non-display area BB and distributed in sequence on the same side of the display area AA in a direction away from the display area AA.

[0195] In this case, the light-sensing detection unit B2 included in the light-sensing circuit can be arranged between the near-field common signal trace B6 and the far-field common signal trace B7, as shown in Figure 20. Meanwhile, the first signal trace B4 included in the light-sensing circuit can be arranged between the pixel driving circuit B8 and the ground signal trace B9, as shown in Figure 21. In this way, the non-display area BB can be rationally utilized to effectively avoid the problem of a large border around the non-display area BB.

[0196] The near-field common signal line B6 is electrically connected to the pixel circuit of the display area AA, and the far-field common signal line B7 is electrically connected to the pixel driving circuit B8.

[0197] To prevent crosstalk between the connection between the far-field common signal trace B7 and the pixel drive circuit B8 and the first signal trace B4, as shown in Figures 21 and 22, the panel body 100 can be configured to further include a third conductive layer 115. The third conductive layer 115 includes a first jumper wire B101, and the far-field common signal trace B7 is electrically connected to the pixel drive circuit B8 via the first jumper wire B101. In this way, the provision of the first jumper wire B101 can prevent signal crosstalk between the connection between the far-field common signal trace B7 and the pixel drive circuit B8 and the first signal trace B4, ensuring that the driver chip 200 can accurately obtain the light current generated by the light-sensitive detection unit B2.

[0198] In combination with the film structure of the panel body 100 described above, the first conductive layer, the second conductive layer, etc. can be reused as the third conductive layer 115. For example, the third conductive layer 115 is the pixel electrode layer 108, the common electrode layer 121 or the top metal layer 114.

[0199] Furthermore, as shown in FIG. 21 , the panel body 100 further includes an anti-static circuit B10 located in the non-display area BB. The anti-static circuit B10 is located between the first signal trace B4 and the far-field common signal trace B7. One end of the anti-static circuit B10 is electrically connected to the far-field common signal trace B7, and the other end of the anti-static circuit B10 is electrically connected to the first signal trace B4 included in the photosensitive circuit. Thus, the provision of the anti-static circuit B10 effectively prevents static electricity from affecting the driver chip 200's acquisition of the light current.

[0200] As shown in Figures 21 and 23, the third conductive layer 115 includes a second jumper B102, and the other end of the anti-static circuit B10 is electrically connected to the first signal line B4 included in the photosensitive circuit through the second jumper B102, thereby avoiding signal crosstalk between the anti-static circuit B10 and some signal lines in the first signal line B4.

[0201] Among them, the anti-static circuit B10 includes a plurality of anti-static units, and the plurality of anti-static units correspond one to one with the number of signal lines of the first signal line B4, so as to effectively ensure the electrostatic discharge of each signal line. Optionally, as shown in Figure 24, the anti-static unit may include two thin film transistors TFT1 and TFT2, the first pole TFT12 of TFT1 is electrically connected to the control pole TFT11 of TFT1, the first pole TFT22 of TFT2, and the far-field common signal line B7 (not shown in the figure), and the second pole TFT23 of TFT2 is electrically connected to the control pole TFT21 of TFT2 and a signal line of the first signal line B4 (not shown in the figure). At this time, the number of the second jumper wires B102 on the third conductive layer 115 described above is the same as the number of the anti-static units and corresponds one to one. Of course, the number of the second jumper wires B102 can also be one less than the number of the anti-static units.

[0202] In the disclosed embodiments, the photosensitive circuit includes a photosensitive detection unit B2 and a photosensitive comparison unit B3. The number of photosensitive detection unit B2 and photosensitive comparison unit B3 can be one or more. If there are multiple photosensitive detection units B2 and multiple photosensitive comparison units B3, the number of photosensitive detection units B2 and photosensitive comparison units B3 is the same. Furthermore, if there are multiple photosensitive detection units B2 and multiple photosensitive comparison units B3, the connection method for the multiple photosensitive detection units B2 is the same as the connection method for the multiple photosensitive comparison units B3 to ensure reference for the photosensitive comparison units B3.

[0203] Next, a detailed explanation will be given based on the number of light-sensing detection units B2 included in the light-sensing circuit.

[0204] When the photosensitive circuit includes a photosensitive detection unit B2, the photosensitive detection unit B2 can be the transistor unit mentioned above, that is, the photosensitive detection unit B2 is a thin film transistor with a control electrode, a first electrode and a second electrode composed of a conductive part 1031, an active part 1051, a first connecting line 1061 and a second connecting line 1062, or it can be the photodiode unit mentioned above, that is, the photosensitive detection unit B2 is a photodiode with a hole conductor part and an electron conductor part composed of a hole-electron part 1121.

[0205] When a photosensitive detection unit B2 included in the photosensitive circuit is the thin film transistor mentioned above, the light current generated by the photosensitive detection unit B2 may be small and difficult to be obtained by the driver chip 200. At this time, combined with the above-mentioned gate metal layer 103 including the conductive part 1031 and the active layer 105 including the active part 1051, as shown in Figure 25, the active part 1051 includes a channel region 1052, and a plurality of first connection parts 1053 located on one side of the channel region 1052 and a plurality of second connection parts 1054 located on the other side of the channel region 1052; the source-drain metal layer 106 includes a plurality of first connection lines 1061 corresponding one-to-one to the plurality of first connection parts 1053, and a plurality of second connection lines 1062 corresponding one-to-one to the plurality of second connection parts 1054, and the plurality of first connection lines 1061 and the plurality of second connection lines 1062 are all connected in parallel and electrically connected to the driver chip 200.

[0206] Since the active portion 1051 includes multiple first connection portions 1053 and multiple second connection portions 1054, the width of the channel region 1052 can be increased to increase the area of ​​the photosensitive region of the photosensitive detection unit B2, while reducing the internal resistance of the channel region 1052 to ensure that the photosensitive detection unit B2 can generate a larger light current under the irradiation of ambient light, which facilitates the driving chip 200 to accurately obtain the light current.

[0207] Optionally, the channel region 1052 on the active portion 1051 may be a strip-shaped structure, with the plurality of first connecting portions 1053 and the plurality of second connecting portions 1054 respectively located on either side of the channel region 1052. The strip-shaped channel region 1052 may be a straight strip structure or a strip structure extending in an S-shape as shown in FIG. 25 . The number of the plurality of first connecting portions 1053 and the number of the plurality of second connecting portions 1054 may be equal or unequal.

[0208] When the photosensitive circuit includes multiple photosensitive detection units B2, the structural types of the multiple photosensitive detection units B2 can be exactly the same. For example, the multiple photosensitive detection units B2 are all transistor units, or are all photodiode units. Of course, the structural types of the multiple photosensitive detection units B2 may not be exactly the same. For example, the multiple photosensitive detection units B2 include both transistor units and diode units.

[0209] In addition, as shown in FIG26 , multiple photodetection units B2 (transistor units) can be connected in parallel, that is, multiple photodetection units B2 are electrically connected to the driver chip 200 after being connected in parallel, to increase the photosensitive area of ​​the photodetection circuit, thereby increasing the generated illumination current. After multiple photodetection units B2 are connected in parallel, the illumination current generated is the product of the illumination current generated by each photodetection unit B2 and the number of photodetection units B2. Similarly, multiple photoreference units B3 included in the photodetection circuit can be connected in parallel, that is, multiple photoreference units B3 are electrically connected to the driver chip 200 after being connected in parallel, to ensure that the multiple photoreference units B3 have reference characteristics while increasing the generated reference current.

[0210] In this way, by setting up the same number of multiple photosensitive detection units B2 and multiple photosensitive control units B3, it is possible to avoid the situation where the illumination current generated by a single photosensitive detection unit B2 is too small, the reference current generated by a single photosensitive control unit B3 is too small, or the current detection lower limit supported by the driver chip 200 is too large, resulting in the driver chip 200 being unable to accurately obtain the illumination current and the reference current, thereby ensuring the accuracy of the display brightness adjustment of the display area AA.

[0211] In conjunction with the above, regarding the light-transmitting holes 1231 on the first light-shielding layer 123, to facilitate the detection of ambient light by the multiple photosensitive detection units B2, as shown in FIG27 , the first light-shielding layer 123 has strip-shaped light-transmitting holes 1231, and the photosensitive areas of the multiple photosensitive detection units B2 are exposed at the light-transmitting holes 1231. Alternatively, as shown in FIG28 , the first light-shielding layer 123 has multiple light-transmitting holes 1231 corresponding one-to-one to the multiple photosensitive detection units B2, and the photosensitive area of ​​each photosensitive detection unit B2 is exposed at the corresponding light-transmitting hole 1231.

[0212] In the case where the first light-shielding layer 123 has multiple light-transmitting holes 1231, the opening area of ​​the first light-shielding layer 123 can be reduced, thereby preventing the ambient light between two adjacent photosensitive areas from being reflected and refracted by the film layer included in the panel body 100 and irradiating the photosensitive area, thereby affecting the accuracy of the ambient light detection unit B2.

[0213] It should be noted that for the photosensitive detection unit B2 included in the photosensitive circuit, the photosensitive area of ​​the photosensitive detection unit B2 can optionally be located within the area enclosed by the light-transmitting aperture 1231 in the first light-shielding layer 123, and the distance between the edge of the light-transmitting aperture 1231 and the photosensitive area is greater than or equal to 3 microns and less than or equal to 6 microns. This effectively ensures that the entire photosensitive area of ​​the photosensitive detection unit B2 receives ambient light that directly illuminates the photosensitive area after passing through the light-transmitting aperture 1231, thereby ensuring that the photosensitive detection unit B2 can generate a large light current. This also reduces the amount of excess ambient light that penetrates the light hole 1231 and is reflected or refracted by the film layer included in the panel body 100 before irradiating the photosensitive area, thereby ensuring the accuracy of ambient light detection by the photosensitive detection unit B2. For example, the distance between the edge of the light-transmitting aperture 1231 and the photosensitive area is 3 microns, 4 microns, 5 microns, or 6 microns. Of course, the distance between the edge of the light-transmitting hole 1231 and the photosensitive area can also be slightly smaller than 3 microns, such as 2.5 microns, as long as the photosensitive detection unit B2 can detect the ambient light.

[0214] Optionally, for the distance between the edge of the light-transmitting hole 1231 and the photosensitive area, taking the photosensitive area as the channel area 1052 of the transistor unit as an example, for the alignment deviation a between the active portion 1051 and the conductive portion 1031, the alignment deviation b between the light-transmitting hole 1231 and the channel area 1052 when manufacturing the panel body 100 (i.e., taking the LCD panel as an example, the alignment deviation between the array substrate 110 and the color filter substrate 120), the process deviation c of the conductive portion 1031, the process deviation d of the active portion 1051, and the process deviation e of the first light-shielding layer 123, the process deviation a can be calculated based on a. 2 、b 2 、(c / 2) 2 、(d / 2) 2 、(e / 2) 2 The square root of the sum is determined.

[0215] The present disclosure also provides a method for manufacturing a display panel, which can be used to manufacture the display panel described in the above embodiment. As shown in FIG29 , the method includes steps S110 to S120.

[0216] Step S110: produce a panel body having a display area, a non-display area located outside the display area, and a binding area located in the non-display area. The panel body includes a photosensitive circuit located in the non-display area, and the photosensitive circuit includes a photosensitive detection unit and a photosensitive comparison unit.

[0217] The panel body includes a first light-shielding layer having a light-transmitting hole, and the photosensitive detection unit has a photosensitive area, which is exposed at the light-transmitting hole and is used to detect the intensity of ambient light and generate a light current. The photosensitive control unit is blocked by the light-shielding layer and is used to generate a reference current.

[0218] Step S120: provide a driver chip, fix the driver chip to the binding area of ​​the panel body, and electrically connect the driver chip to the photosensitive detection unit and the photosensitive comparison unit respectively. The driver chip is used to adjust the display brightness of the display area according to the light current and the reference current.

[0219] In the embodiment of the present disclosure, the above method can be used to decompose ambient light sensing into a photosensitive circuit and a processing module, and the photosensitive circuit is integrated into the display panel, and the processing module is integrated into the driver chip of the display panel, thereby achieving high integration of ambient light detection, while avoiding the situation of separately setting an ambient light sensor on the inner side of the display panel, thereby facilitating the improvement of space utilization of the display device with the display panel; in addition, the photosensitive detection unit and the photosensitive control unit are both electrically connected to the driver chip, so that when adjusting the display brightness, the reference current detected by the photosensitive control unit is used as a reference to improve the accuracy of the display brightness adjustment of the display area.

[0220] In the above step S110, the panel body can be an LCD panel, an OLED panel, etc. The specific structure of the panel body and the photosensitive circuit integrated on the panel body can refer to the above embodiment, and the embodiment of the present disclosure will not elaborate on this.

[0221] In the above step S120, the driver chip is integrated with a processing module of the ambient light sensor, and a comparison table between the actual light current and the driving current is pre-burned, so that the display brightness of the display area can be adjusted through the integrated processing module and the comparison table, combined with the light current and reference current detected by the photosensitive circuit.

[0222] It should be noted that although the steps of the method for manufacturing a display panel in the present disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in this specific order, or that all steps must be performed to achieve the desired results. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0223] The present disclosure also provides a display device comprising the display panel described in the above embodiment. The display device may be a mobile phone, a smartwatch, a laptop computer, or the like. In combination with the above display panel, the ambient light sensing is decomposed into a photosensitive circuit and a processing module, the photosensitive circuit is integrated into the display panel, and the processing module is integrated into the display panel's driver chip, thereby achieving high integration of ambient light detection and increasing the available space of the display device, thereby improving space utilization.

[0224] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A display panel, characterized in that: include: A panel body having a display area and a non-display area located outside the display area, and a binding area located in the non-display area. The panel body includes a photosensitive circuit located in the non-display area, and the photosensitive circuit includes a photosensitive detection unit and a photosensitive comparison unit. The panel body includes a first light shielding layer having a light-transmitting hole. The light-sensing detection unit includes a light-sensing area, which is exposed at the light-transmitting hole and is used to detect the intensity of ambient light and generate a light current. The light-sensing comparison unit is shielded by the first light shielding layer and is used to generate a reference current. A driver chip is located in the binding area of ​​the panel body and is electrically connected to the light detection unit and the light comparison unit. The driver chip is used to adjust the display brightness of the display area according to the light current and the reference current.

2. The display panel according to claim 1, wherein The panel body comprises: a gate metal layer, located on a side of the first light-shielding layer away from the light-emitting surface of the panel body, and comprising a conductive portion; an active layer, located on a side of the gate metal layer close to the first light-shielding layer, and comprising an active portion, the active portion comprising a channel region, and a first connecting portion and a second connecting portion located on both sides of the channel region, wherein a projection of the channel region in a direction perpendicular to the panel body is located within a projection of the conductive portion in a direction perpendicular to the panel body; a source-drain metal layer, located on a side of the active layer close to the first light-shielding layer, and comprising a first connecting line and a second connecting line, wherein the first connecting line and the second connecting line are connected to the first connecting portion and the second connecting portion respectively; The first connecting portion and the second connecting portion correspondingly form the first pole and the second pole of the photosensitive detection unit, the area on the conductive portion overlapping with the channel region forms the control pole of the photosensitive detection unit, the channel region forms the photosensitive region of the photosensitive detection unit, and the conductive portion, the first connecting line, and the second connecting line are electrically connected to the driving chip respectively.

3. The display panel according to claim 2, wherein: A dimension of the conductive portion extending from the channel region is greater than or equal to 5 micrometers and less than or equal to 10 micrometers.

4. The display panel according to claim 2, wherein: The photosensitive circuit includes a first signal trace, and the first signal trace includes a control trace, a first electrode trace, and a second electrode trace; The first electrode wiring is the first connecting wire, the second electrode wiring is the second connecting wire, and the control wiring is electrically connected to the control electrode and the driving chip respectively.

5. The display panel according to claim 4, wherein: The control wiring is located in the gate metal layer.

6. The display panel according to claim 4, wherein: The panel body includes a first conductive layer, the first conductive layer is located on a side of the source / drain metal layer close to the first light shielding layer, and the control wiring is located on the first conductive layer.

7. The display panel according to claim 2, wherein: The photosensitive circuit includes a first signal trace, and the first signal trace includes a control trace, a first electrode trace, and a second electrode trace; The first electrode wiring is the first connecting wire, the second electrode wiring is electrically connected to the second connecting wire and the driving chip respectively, and the control wiring is electrically connected to the control electrode and the driving chip respectively.

8. The display panel according to claim 7, wherein: The panel body includes a first conductive layer, which is located on a side of the source / drain metal layer close to the first light shielding layer. The control wiring is located on the gate metal layer, and the second electrode wiring is located on the first conductive layer.

9. The display panel according to claim 2, wherein: The length of the channel region is greater than or equal to 1 micrometer and less than or equal to 10 micrometers.

10. The display panel according to claim 2, wherein: The width of the channel region is greater than or equal to 2 micrometers and less than or equal to 50 micrometers.

11. The display panel according to claim 1, wherein: The panel body comprises: a base layer, located on a side of the first light-shielding layer away from the light-emitting surface of the panel body, and comprising a base portion; a photoelectric conversion layer, located on a side of the base layer close to the first light-shielding layer, and comprising a hole-electron portion, wherein an orthographic projection of the hole-electron portion in a direction perpendicular to the panel body is located within an orthographic projection of the base portion in a direction perpendicular to the panel body; a covering layer, located on a side of the photoelectric conversion layer close to the first light-shielding layer, and comprising a covering portion, wherein an orthographic projection of the hole-electron portion in a direction perpendicular to the panel body is located within an orthographic projection of the covering portion in a direction perpendicular to the panel body; The base and the covering portion form the first and second poles of the light-sensitive detection unit respectively, and are electrically connected to the driving chip respectively. The hole electron portion faces the surface of the first light-shielding layer. A photosensitive area of ​​the photosensitive detection unit is formed.

12. The display panel according to claim 11, wherein: The photoelectric conversion layer includes a hole semiconductor layer and an electron semiconductor layer, and an intrinsic semiconductor layer located between the hole semiconductor layer and the electron semiconductor layer; The hole semiconductor layer includes a hole conductor portion, the electron semiconductor layer includes an electron conductor portion, and the intrinsic semiconductor layer includes an intrinsic conductor portion. The hole conductor portion, the electron conductor portion, and the intrinsic conductor portion all have overlapping areas in a direction perpendicular to the panel body.

13. The display panel according to claim 11, wherein: The photosensitive circuit includes a first signal line, the first signal line includes a first electrode line and a second electrode line, and the panel body includes a second conductive layer; The second conductive layer is located on a side of the cover layer close to the first light shielding layer. One of the first electrode line and the second electrode line is located on the base layer, and the other is located on the second conductive layer.

14. The display panel according to any one of claims 1 to 13, wherein: The photosensitive area is located in the area surrounded by the light-transmitting holes, and the distance between the edge of the light-transmitting holes and the photosensitive area is greater than or equal to 3 micrometers and less than or equal to 6 micrometers.

15. The display panel according to any one of claims 1 to 13, wherein: The photosensitive circuit includes a plurality of photosensitive detection units, and the plurality of photosensitive detection units are connected in parallel and electrically connected to the driving chip.

16. The display panel according to claim 15, wherein: The first light shielding layer has a strip-shaped light-transmitting hole, and the light-sensitive areas of the plurality of light-sensitive detection units are exposed at the light-transmitting hole.

17. The display panel according to claim 15, wherein: The first light shielding layer has a plurality of light-transmitting holes corresponding one-to-one to the plurality of light-sensitive detection units, and the light-sensitive area of ​​each light-sensitive detection unit is exposed at the corresponding light-transmitting hole.

18. The display panel according to any one of claims 2 to 10, wherein: The active portion includes a channel region, a plurality of first connection portions located on one side of the channel region, and a plurality of second connection portions located on the other side of the channel region; The source-drain metal layer includes a plurality of first connection lines corresponding one-to-one to the plurality of first connection parts, and a plurality of second connection lines corresponding one-to-one to the plurality of second connection parts. The plurality of first connection lines and the plurality of second connection lines are electrically connected to the driver chip after being connected in parallel.

19. The display panel according to any one of claims 1 to 13, wherein: The photosensitive circuit further includes a first signal trace and a second signal trace; The first signal line is electrically connected to the light detection unit and the driver chip respectively, and the second signal line is electrically connected to the light control unit and the driver chip respectively; The binding area is close to the bottom of the display area, the photosensitivity detection unit and the photosensitivity comparison unit are close to the top of the display area, and the first signal line and the second signal line are respectively distributed on both sides of the display area.

20. The display panel according to claim 19, wherein The light-sensing detection unit and the light-sensing comparison unit, the first signal wiring and the second signal wiring are all symmetrically distributed along the center line of the display area.

21. The display panel according to any one of claims 1 to 13, wherein: The photosensitive circuit further includes a first signal trace and a second signal trace; The first signal line is electrically connected to the light detection unit and the driver chip respectively, and the second signal line is electrically connected to the light control unit and the driver chip respectively; The binding area is close to the bottom of the display area, the photosensitivity detection unit and the photosensitivity comparison unit are close to the top of the display area, and the first signal line and the second signal line are distributed on the same side of the display area.

22. The display panel according to claim 21, wherein: The first signal wiring and the second signal wiring each include a control wiring, a first electrode wiring, and a second electrode wiring; The control line of the first signal line and the control line of the second signal line are the same signal line, the first electrode line of the first signal line and the first electrode line of the second signal line are the same signal line, and the second electrode line of the first signal line and the second electrode line of the second signal line are different signal lines.

23. The display panel according to any one of claims 1 to 13, wherein: The panel body comprises a near-field common signal line and a far-field common signal line located in the non-display area and sequentially distributed at the top of the display area in a direction away from the display area, and a pixel driving circuit and a ground signal line located in the non-display area and sequentially distributed on the same side of the display area in a direction away from the display area; The panel body further includes a third conductive layer, the third conductive layer includes a first jumper, the near-field common signal line is electrically connected to the pixel circuit of the display area, the far-field common signal line is electrically connected to the pixel driving circuit through the first jumper, and the photosensitive circuit includes a photosensitive detection The unit is located between the near-field common signal line and the far-field common signal line, and the first signal line included in the photosensitive circuit is located between the pixel driving circuit and the ground signal line.

24. The display panel according to claim 23, wherein: The panel body further includes an anti-static circuit located in the non-display area; The anti-static circuit is located between the first signal line and the far-field common signal line, the third conductive layer includes a second jumper, one end of the anti-static circuit is electrically connected to the far-field common signal line, and the other end of the anti-static circuit is electrically connected to the first signal line included in the photosensitive circuit through the second jumper.

25. The display panel according to any one of claims 1 to 13, wherein: The panel body comprises: An array substrate having the photosensitive circuit; a color filter substrate, located on one side of the array substrate and having the first light-shielding layer; The glue frame is located between the array substrate and the color filter substrate, and adheres the array substrate and the color filter substrate to the periphery of the photosensitive circuit.

26. The display panel according to claim 25, wherein: The distance between the inner edge of the plastic frame and the photosensitive area of ​​the photosensitive detection unit is greater than or equal to 150 microns.

27. The display panel according to claim 25, wherein: The panel body further includes: a light guide plate, located on a side of the color filter substrate facing away from the array substrate; The front light source is located on a side of the light guide plate away from the array substrate, and a light emitting surface of the front light source faces the light guide plate.

28. The display panel according to claim 27, wherein: The orthographic projection of the light guide plate in a direction perpendicular to the array substrate is at least aligned with the edge of the display area, and does not have an overlapping area with the light sensing detection unit.

29. The display panel according to claim 28, wherein The distance between the edge of the light guide plate and the photosensitive area of ​​the photosensitive detection unit is greater than or equal to 0.3 mm.

30. The display panel according to claim 28, wherein At least the side surface of the light guide plate close to the light sensing detection unit has a light shielding structure.

31. The display panel according to claim 30, wherein: The distance between the edge of the light guide plate and the photosensitive area of ​​the photosensitive detection unit is greater than or equal to 0.2 mm.

32. The display panel according to claim 27, wherein: The light guide plate includes a light guide area and a light transmission area. The orthographic projection of the light guide area in a direction perpendicular to the array substrate covers the display area, and the orthographic projection of the light transmission area in a direction perpendicular to the array substrate covers the photosensitive detection unit.

33. The display panel according to claim 32, wherein: The size of the edge of the light-guiding area and the light-sensitive area of ​​the light-sensitive detection unit is greater than or equal to 0.2 mm.

34. The display panel according to claim 25, wherein The panel body further includes: a backlight source, located on a side of the array substrate facing away from the color filter substrate, with a light emitting surface of the backlight source facing the array substrate; The second light-shielding layer is located on a side of the backlight source close to the light-emitting surface and has a light-shielding portion located in the non-display area. The orthographic projection of the light-shielding portion on the array substrate covers the photosensitive detection unit and the photosensitive contrast unit.

35. A method for manufacturing a display panel, characterized in that: The method comprises: A panel body is manufactured, wherein the panel body has a display area, a non-display area located outside the display area, and a binding area located in the non-display area. The panel body includes a photosensitive circuit located in the non-display area, and the photosensitive circuit includes a photosensitive detection unit and a photosensitive comparison unit. The panel body includes a first light-shielding layer having a light-transmitting hole. The light-sensing detection unit includes a light-sensing area, which is exposed at the light-transmitting hole and is used to detect the intensity of ambient light and generate a light current. The light-sensing comparison unit is shielded by the light-shielding layer and is used to generate a reference current. A driver chip is provided, the driver chip is fixed to the binding area of ​​the panel body, and the driver chip is electrically connected to the photosensitive detection unit and the photosensitive comparison unit respectively. The driver chip is used to adjust the display brightness of the display area according to the illumination current and the reference current.

36. A display device, characterized in that: A display panel comprising any one of claims 1-34.

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