Display panel and display device

Abstract

A display panel and a display device. The display panel has a display area and a non-display area, and the non-display area is located at the periphery of the display area. The display panel comprises a substrate, a plurality of display pixels located on one side of the substrate and in the display area, and a plurality of light sensing elements located on the same side of the substrate as the display pixels and in the non-display area. The light sensing elements are arranged adjacent to the display pixels, and the light sensing elements are used for sensing external ambient light. By arranging the light sensing elements adjacent to the display pixels, the dummy switch tube of the dummy pixel can be used as the light sensing element for sensing external ambient light, thereby avoiding the separate arrangement of the light sensing elements, and further avoiding the additional increase in the width of the non-display area of the display panel due to the arrangement of the light sensing elements. This is conducive to realizing an extreme frame or full-screen display panel.

Description

Technical Field

[0001] This disclosure pertains to the field of display technology, specifically relating to a display panel and a display device. Background Technology

[0002] LCD (Liquid Crystal Display) screens have attracted widespread attention due to their advantages such as low power consumption, small size, and low radiation. Summary of the Invention

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

[0004] In a first aspect, embodiments of this disclosure provide a display panel having a display area and a non-display area, wherein the non-display area is located around the display area;

[0005] The display panel includes a substrate.

[0006] Multiple display pixels are located on one side of the substrate and within the display area;

[0007] Multiple photosensitive elements are located on the same side of the substrate as the display pixels and in the non-display area. The photosensitive elements are arranged adjacent to the display pixels and are used to sense ambient light.

[0008] In some embodiments, the plurality of display pixels are arranged in an array; the plurality of photosensitive elements are arranged in an array;

[0009] The photosensitive element and the display pixel are located in different rows but the same column;

[0010] The photosensitive element includes a first photosensitive element and a second photosensitive element, and the second photosensitive element and the first photosensitive element are arranged sequentially along a direction away from the display area;

[0011] The first photosensitive element has at least one row, and the second photosensitive element has at least one row;

[0012] The display pixel includes a control switch transistor;

[0013] The display panel also includes multiple grid lines and multiple data lines, at least located in the display area, wherein the grid lines and the data lines intersect in space, and the display pixels are located within the area enclosed by the intersection of the grid lines and the data lines.

[0014] The display panel also includes a black matrix located on the side of the display pixels and the photosensitive element that is away from the substrate. The orthographic projection of the black matrix on the substrate covers the orthographic projection of the grid lines, the data lines, the control switch tube, and the second photosensitive element on the substrate.

[0015] The black matrix and the orthographic projection of the first photosensitive element on the substrate do not overlap.

[0016] In some embodiments, a plurality of color resists of different colors are also included, located on the side of the display pixel and the photosensitive element away from the substrate, and located in the display area and the non-display area;

[0017] The orthogonal projection of the color resist on the substrate covers the orthogonal projection of the first photosensitive element on the substrate;

[0018] The orthogonal projections of the first photosensitive element and the color resist on the substrate do not overlap.

[0019] In some embodiments, the colors of the color resist include red, green, and blue.

[0020] In some embodiments, the control electrode of the first photosensitive element in the same row is electrically connected to a first control line;

[0021] The first electrode of the first photosensitive element in the same row is electrically connected to a first signal line;

[0022] The second electrode of the first photosensitive element, which is in the same row and corresponds to the same color color resist, is electrically connected to a second signal line;

[0023] The second electrode of the first photosensitive element, which is in the same row and corresponds to different colors of color resist, is electrically connected to different second signal lines;

[0024] The second electrode of the first photosensitive element, which is in the same row and does not correspond to the color resist, is electrically connected to a third signal line.

[0025] In some embodiments, the control electrodes of all rows of the first photosensitive element are electrically connected to a first control line;

[0026] All rows of the first photosensitive element are electrically connected to the first pole of one first signal line;

[0027] The second electrode of the first photosensitive element corresponding to the same color resist in all rows is electrically connected to a second signal line;

[0028] The second electrode of the first photosensitive element corresponding to different colors of the color resist in all rows is electrically connected to different second signal lines;

[0029] The second electrode of the first photosensitive element in all rows that does not correspond to the color resist is electrically connected to one of the third signal lines.

[0030] In some embodiments, different second signal lines spatially intersect each other.

[0031] At the spatial intersection of different second signal lines, the different second signal lines are located on different layers;

[0032] The portions other than the spatial intersections of the second signal lines are arranged on the same layer.

[0033] In some embodiments, the control electrode of the second photosensitive element in the same row is electrically connected to a second control line;

[0034] The first electrode of the second photosensitive element in the same row is electrically connected to a fourth signal line;

[0035] The second electrode of the second photosensitive element in the same row is electrically connected to a fifth signal line.

[0036] In some embodiments, the control electrodes of all rows of the second photosensitive element are electrically connected to a second control line;

[0037] All rows of the second photosensitive element's first electrode are electrically connected to one of the fourth signal lines;

[0038] All rows of the second photosensitive element's second electrode are electrically connected to one of the fifth signal lines.

[0039] In some embodiments, the non-display area includes a first area and a second area, the first area and the second area being located on opposite sides of the display area along the extension direction of the data line;

[0040] The photosensitive element is located in the first region and / or the second region.

[0041] In some embodiments, a detection circuit is also included, located in the second region;

[0042] The non-display area also includes a third area and a fourth area, located on opposite sides of the display area along the extension direction of the gate line;

[0043] The first control line, the first signal line, and the second signal line extend through the third region to be electrically connected to the detection circuit;

[0044] The third signal line, the second control line, the fourth signal line, and the fifth signal line extend through the fourth region to be electrically connected to the detection circuit;

[0045] The display panel further includes a first gate driving circuit and a second gate driving circuit, wherein the first gate driving circuit is located in the third region; and the second gate driving circuit is located in the fourth region.

[0046] The first control line, the first signal line, and the second signal line are located on the side of the first gate driving circuit that is away from the display area;

[0047] The third signal line, the second control line, the fourth signal line, and the fifth signal line are located on the side of the second gate drive circuit away from the display area.

[0048] In some embodiments, the photosensitive element includes a low-temperature polycrystalline silicon transistor.

[0049] The first area and the second area are each provided with two rows of photosensitive elements.

[0050] In some embodiments, the photosensitive element includes an amorphous silicon transistor.

[0051] The first area and the second area are each provided with four rows of photosensitive elements.

[0052] In some embodiments, the control switch includes a low-temperature polysilicon transistor;

[0053] The control electrode of the control switch is located on the side of its active layer away from the substrate;

[0054] The control electrode of the photosensitive element is located on the side of its active layer closer to the substrate;

[0055] The photosensitive element also includes a light-blocking structure, which is disposed on the same layer as the control electrode of the control switch tube.

[0056] Secondly, embodiments of this disclosure also provide a display device, which includes the aforementioned display panel.

[0057] The display panel provided in this embodiment, by arranging the photosensitive element adjacent to the display pixel, can use the dummy switch of the dummy pixel as a photosensitive element to sense the ambient light, thereby avoiding the need for a separate photosensitive element and thus avoiding the need for the photosensitive element to increase the width of the non-display area of ​​the display panel, which is beneficial to achieving an extreme bezel or full screen of the display panel.

[0058] The display device provided in this embodiment, by adopting the above-mentioned display panel, can avoid the additional increase in the width of the non-display area of ​​the display device due to the setting of the photosensitive element, thereby facilitating the realization of the ultimate bezel or full screen of the display device. Attached Figure Description

[0059] The accompanying drawings are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the disclosure and do not constitute a limitation thereof. The above and other features and advantages will become more apparent to those skilled in the art from the detailed description of exemplary embodiments with reference to the accompanying drawings, in which:

[0060] Figure 1aThis is a schematic diagram showing the placement of a light sensor in an LCD panel in related technologies.

[0061] Figure 1b This is a schematic diagram showing the location of the electrostatic protection circuit for the light sensor in the LCD panel in related technologies.

[0062] Figure 2a This is a top view schematic diagram of the structure of a display panel according to an embodiment of the present disclosure.

[0063] Figure 2b for Figure 2a A schematic diagram of the wiring of the photosensitive element.

[0064] Figure 3a This is a top view schematic diagram of the structure of another display panel in an embodiment of this disclosure.

[0065] Figure 3b for Figure 3a A schematic diagram of the wiring of the photosensitive element.

[0066] Figure 4a This is a schematic diagram of the wiring of the first photosensitive element corresponding to different color resists in the embodiments of this disclosure.

[0067] Figure 4b For along Figure 4a A structural cross-sectional view of the AA' section line.

[0068] Figure 5 This is a top view schematic diagram of the layout of the photosensitive element and its detection circuit in an embodiment of this disclosure.

[0069] Figure 6 This is a cross-sectional view of the structure of the photosensitive element and the control switch in the embodiments of this disclosure when low-temperature polysilicon transistors are used. Detailed Implementation

[0070] To enable those skilled in the art to better understand the technical solutions of the embodiments of this disclosure, a display panel and display device provided in the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0071] Embodiments of this disclosure will be described more fully below with reference to the accompanying drawings; however, the embodiments shown may be embodied in different forms and should not be construed as limited to the embodiments set forth in this disclosure. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this disclosure.

[0072] This disclosure is not limited to the embodiments shown in the accompanying drawings, but includes modifications to the configuration based on the manufacturing process. Therefore, the areas illustrated in the drawings are schematic, and the shapes of the areas shown illustrate specific shapes of the areas, but are not intended to be limiting.

[0073] In related technologies, integrating the ambient light detection module onto the LCD panel to replace the ambient light sensor at the device end can save costs.

[0074] Currently, full-screen displays are a key technical indicator in the display industry. To achieve the ultimate bezel, every reduction of 0.01mm in bezel width represents a significant technological breakthrough.

[0075] In related technologies, such as Figure 1a As shown, the LCD module integrating an ambient light detection module has a row of light sensors (such as photosensitive TFTs, i.e., photosensitive thin-film transistors) 11 designed between the display area 100 and the non-display area 101 of its LCD panel to achieve the function of ambient light detection. The light sensors 11 can be located in the non-display area on the DPO (display offside, i.e., the upper bezel along the data line extension direction) or DP (display, i.e., the lower bezel along the data line extension direction) side of the LCD panel. Alternatively, the light sensors 11 can also be located in the blind hole non-display area M of the camera mounting position on the LCD panel. All three solutions require a separate row of light sensors 11. Figure 1b As shown, when the light sensor 11 is located on the DPO side, an electrostatic discharge (ESD) protection circuit 12 for the light sensor also needs to be designed simultaneously. This will cause the width of the upper bezel of the LCD panel to increase by 0.11mm (as in mobile phone products). Moving the electrostatic discharge protection circuit of the light sensor from the DPO side to the DP side of the LCD panel will also increase the width of the lower bezel of the LCD panel by 0.18mm (as in tablet products). When the light sensor is set at the blind hole where the camera is installed, there will be a problem of uneven color transition around the hole.

[0076] In summary, placing the light sensor on either the DPO side or the DP side will increase the bezel width of the LCD panel. Therefore, how to avoid the impact of the light sensor placement on the bezel width of the LCD panel has become an urgent problem to be solved.

[0077] To address the aforementioned problems in the related art, in a first aspect, embodiments of this disclosure provide a display panel, such as... Figure 2a , Figure 2b , Figure 3a and Figure 3b As shown, the display panel has a display area 100 and a non-display area 101, with the non-display area 101 located on the periphery of the display area 100. The display panel includes a substrate 1, a plurality of display pixels 2 located on one side of the substrate 1 and in the display area 100, and a plurality of photosensitive elements 3 located on the same side of the substrate 1 as the display pixels 2 and in the non-display area 101. The photosensitive elements 3 are arranged adjacent to the display pixels 2 and are used to sense ambient light.

[0078] Display pixel 2 is used for image display. Multiple dummy pixels 13 are provided in the non-display area 101, located on the same side of the substrate 1 as display pixel 2. Each dummy pixel 13 includes a dummy switch (i.e., the switch is not used to control the display of the dummy pixel 13). The dummy switch can be used as a photosensitive element 3 to sense ambient light. The film structure of the dummy pixel 13 is basically the same as that of the display pixel 2. For example, both dummy pixel 13 and display pixel 2 include a switch, a pixel electrode, and a common electrode. The placement and film structure of the switch in dummy pixel 13 are basically the same as those in display pixel 2. The film structure and pattern of the pixel electrode and the common electrode are also basically the same. The dummy pixel 13 ensures uniform processing around the display pixel 2 during the manufacturing process. The dummy pixel 13 does not display an image.

[0079] In addition, in this embodiment, since the photosensitive element 3 uses the dummy switch in the dummy pixel, there is no need to set up an electrostatic discharge protection circuit for the photosensitive element 3. It is sufficient to use the electrostatic discharge protection circuit of the display pixel 2 or the dummy pixel originally set in the non-display area 101, which is conducive to further reducing the width of the non-display area 101.

[0080] In this embodiment, by setting the photosensitive element 3 adjacent to the display pixel 2, the dummy switch of the dummy pixel 13 can be used as the photosensitive element 3 to sense the ambient light, thereby avoiding the separate setting of the photosensitive element 3 and thus avoiding the additional increase in the width of the non-display area 101 of the display panel by setting the photosensitive element 3, which is beneficial to achieving the ultimate bezel or full screen of the display panel.

[0081] In some embodiments, a plurality of display pixels 2 are arranged in an array; a plurality of photosensitive elements 3 are arranged in an array; the photosensitive elements 3 and the display pixels 2 are located in different rows but in the same column; the photosensitive elements 3 include a first photosensitive element 31 and a second photosensitive element 32, the second photosensitive element 32 and the first photosensitive element 31 are arranged sequentially in a direction away from the display area 100; the first photosensitive element 31 is provided in at least one row, and the second photosensitive element 32 is provided in at least one row; the display pixels 2 include a control switch tube 20; the display panel also includes a plurality of grid lines 4 and a plurality of data lines 5, located at least in the display area 100, the grid lines 4 and the data lines 5 intersect spatially, and the display pixels 2 are located in the area enclosed by the intersection of the grid lines 4 and the data lines 5; the display panel also includes a black matrix 6, located on the side of the display pixels 2 and the photosensitive elements 3 away from the substrate 1, the orthographic projection of the black matrix 6 on the substrate 1 covers the orthographic projections of the grid lines 4, the data lines 5, the control switch tube 20 and the second photosensitive element 32 on the substrate 1; the orthographic projections of the black matrix 6 and the first photosensitive element 31 on the substrate 1 do not overlap.

[0082] In this design, the grating line 4 provides a scanning signal for a row of display pixels 2, and the data line 5 provides a data signal for a column of display pixels 2. Under the control of the grating line 4, the control electrode of the control switch 20 can provide the data signal on the data line 5 to the display pixels 2, thereby driving the display pixels 2 to perform display. The first photosensitive element 31 can sense ambient light, while the second photosensitive element 32 is covered by the black matrix 6 and cannot sense ambient light. The light sensing output signal of the second photosensitive element 32 can be used as a reference for the light sensing output signal of the first photosensitive element 31, thereby allowing the calculation of the actual light sensing result of the first photosensitive element 31.

[0083] In some embodiments, the display panel further includes a plurality of color resists 7 of different colors, located on the side of the display pixel 2 and the photosensitive element 3 away from the substrate 1, and located in the display area 100 and the non-display area 101; the orthographic projection of the color resist 7 on the substrate 1 covers part of the orthographic projection of the first photosensitive element 31 on the substrate 1; part of the orthographic projection of the first photosensitive element 31 and the color resist 7 on the substrate 1 do not overlap.

[0084] The orthographic projections of different colored color resists 7 onto the substrate 1 also cover the orthographic projections of the display pixel 2 onto the substrate 1. The portion of the first photosensitive element 31 covered by the different colored color resists 7 can sense the color temperature of the ambient light, thereby providing a reference for the display color temperature of the display pixel 2. The first photosensitive element 31 not covered by the color resists 7 can sense the illuminance (i.e., brightness) of the ambient light, thereby providing a reference for the display brightness of the display pixel 2.

[0085] In some embodiments, the colors of the color resist 7 include red, green, and blue. The color temperature of ambient light can be obtained by mixing and processing the light sensing signals output by the first photosensitive element 31 covered by the red, green, and blue color resist 7.

[0086] In some embodiments, the control electrode of the first photosensitive element 31 in the same row is electrically connected to a first control line G1; the first electrode of the first photosensitive element 31 in the same row is electrically connected to a first signal line S1; the second electrode of the first photosensitive element 31 in the same row and corresponding to the same color color resist 7 is electrically connected to a second signal line D1; the second electrode of the first photosensitive element 31 in the same row and corresponding to different color color resist 7 is electrically connected to different second signal lines D1; ​​and the second electrode of the first photosensitive element 31 in the same row and not corresponding to a color resist 7 is electrically connected to a third signal line D2.

[0087] In some embodiments, the control electrode of all rows of first photosensitive elements 31 is electrically connected to a first control line G1; the first electrode of all rows of first photosensitive elements 31 is electrically connected to a first signal line S1; the second electrode of all rows of first photosensitive elements 31 corresponding to the same color color resist 7 is electrically connected to a second signal line D1; the second electrode of all rows of first photosensitive elements 31 corresponding to different colors color resist 7 is electrically connected to different second signal lines D1; ​​and the second electrode of all rows of first photosensitive elements 31 not corresponding to color resist 7 is electrically connected to a third signal line D2.

[0088] Specifically, the first signal line S1 inputs a voltage signal to the first electrode of the first photosensitive element 31, and the second signal line D1 outputs a photoelectric sensing signal from the second electrode of the first photosensitive element 31. The third signal line D2 outputs a photoelectric sensing signal from the second electrode of the first photosensitive element 31. The active layer of the first photosensitive element 31 senses ambient light and performs photoelectric conversion.

[0089] In this embodiment, the first photosensitive element 31 corresponding to different color resists 7 can sense the chromaticity of ambient light, so that the display chromaticity of the display panel can be adjusted according to the ambient light chromaticity sensing result of the first photosensitive element 31. The first photosensitive element 31 not corresponding to the color resist 7 can sense the illuminance of ambient light, so that the display brightness of the display panel can be adjusted according to the ambient light illuminance sensing result of the first photosensitive element 31.

[0090] In some embodiments, such as Figure 4a and Figure 4b As shown, different second signal lines D1 intersect each other spatially. At the spatial intersection positions of different second signal lines D1, the different second signal lines D1 are located on different layers; the parts outside the spatial intersection positions of different second signal lines D1 are set on the same layer.

[0091] For example, at the spatial intersection of the second signal line D1(R) connected to the first photosensitive element 31 covered by red color resist and the second signal line D1(G) connected to the first photosensitive element 31 covered by green color resist, the second signal line D1(R) is disposed on the same layer as the second electrode of the first photosensitive element 31, and the second signal line D1(G) is disposed on the same layer as the control electrode of the first photosensitive element 31. That is, at the spatial intersection of different second signal lines D1, one second signal line D1 needs to cross to other conductive layers at the spatial intersection to avoid short circuits between different second signal lines D1 at the spatial intersection. The same principle applies to the spatial intersection of the second signal line D1(R) connected to the first photosensitive element 31 covered by red color resist and the second signal line D1(B) connected to the first photosensitive element 31 covered by blue color resist, as well as the spatial intersection of the second signal line D1(G) connected to the first photosensitive element 31 covered by green color resist and the second signal line D1(B) connected to the first photosensitive element 31 covered by blue color resist. The portion of the second signal line D1, excluding the spatial intersection position, is disposed on the same layer as the second electrode of the first photosensitive element 31.

[0092] In some embodiments, the control electrode of the second photosensitive element 32 in the same row is electrically connected to a second control line G2; the first electrode of the second photosensitive element 32 in the same row is electrically connected to a fourth signal line S2; and the second electrode of the second photosensitive element 32 in the same row is electrically connected to a fifth signal line D3.

[0093] In some embodiments, the control electrode of all rows of second photosensitive elements 32 is electrically connected to a second control line G2; the first electrode of all rows of second photosensitive elements 32 is electrically connected to a fourth signal line S2; and the second electrode of all rows of second photosensitive elements 32 is electrically connected to a fifth signal line D3.

[0094] In this system, the fourth signal line S2 inputs a voltage signal to the first electrode of the second photosensitive element 32, and the fifth signal line D3 outputs a photoelectric sensing signal from the second electrode of the second photosensitive element 32. The active layer of the second photosensitive element 32 senses ambient light and performs photoelectric conversion.

[0095] In this embodiment, since the second photosensitive element 32 is covered by the black matrix 6, the second photosensitive element 32 cannot sense ambient light. The photoelectric sensing signal output from the second electrode of the second photosensitive element 32 can be used as a reference signal for the first photosensitive element 31 to sense ambient light. Based on the photoelectric sensing signal output from the second electrode of the second photosensitive element 32, the photoelectric sensing result of the first photosensitive element 32 on ambient light (including ambient light chromaticity and ambient light illuminance) can be calculated.

[0096] In some embodiments, the non-display area 101 includes a first area 101A and a second area 101B, which are located on opposite sides of the display area 100 along the extension direction of the data line 5; the photosensitive element 3 is located in the first area 101A and / or the second area 101B.

[0097] In the first zone 101A and the second zone 101B, dummy pixels are usually provided. The photosensitive element 3 can use the dummy switching tube in the dummy pixel, so that the photosensitive element 3 does not need to be set separately, thereby increasing the bezel width of the display panel.

[0098] In some embodiments, such as Figure 5 As shown, the display panel also includes a detection circuit 8 located in the second region 101B; the non-display region 101 also includes a third region 101C and a fourth region 101D located on opposite sides of the display region 100 along the extension direction of the gate line 4; the first control line G1, the first signal line S1, and the second signal line D1 extend through the third region 101C to be electrically connected to the detection circuit 8; the third signal line D2, the second control line G2, the fourth signal line S2, and the fifth signal line D3 extend through the fourth region 101D to be electrically connected to the detection circuit 8; the display panel also includes a first gate driving circuit 9 and a second gate driving circuit 10, the first gate driving circuit 9 being located in the third region 101C; the second gate driving circuit 10 being located in the fourth region 101D, the first control line G1, the first signal line S1, and the second signal line D1 being located on the side of the first gate driving circuit 9 away from the display region 100; the third signal line D2, the second control line G2, the fourth signal line S2, and the fifth signal line D3 being located on the side of the second gate driving circuit 10 away from the display region 100.

[0099] In some embodiments, the photosensitive element 3 includes a low-temperature polysilicon transistor, and two rows of photosensitive elements 3 are respectively disposed in the first region 101A and the second region 101B.

[0100] In some embodiments, the photosensitive element 3 includes an amorphous silicon transistor, and four rows of photosensitive elements 3 are respectively disposed in the first region 101A and the second region 101B.

[0101] In some embodiments, such as Figure 2a , Figure 3a and Figure 6 As shown, the control switch 20 includes a low-temperature polysilicon transistor; the control electrode G of the control switch 20 is located on the side of its active layer P away from the substrate 1; the control electrode G' of the photosensitive element 3 is located on the side of its active layer P' close to the substrate 1; the photosensitive element 3 includes a light-blocking structure 30, which is disposed in the same layer as the control electrode G of the control switch 20.

[0102] In this design, the control electrode G' of the photosensitive element 3 and the control electrode G of the control switch 20 are located on different layers. The active layer P' of the photosensitive element 3 and the active layer P of the control switch 20 are arranged on the same layer. The source electrode S' and drain electrode D' of the photosensitive element 3 are arranged on the same layer as the source electrode S and drain electrode D of the control switch 20. An insulating layer 14 is provided between the control electrode G' and the active layer P' of the photosensitive element 3, and between the active layer P' and the source electrode S' and the drain electrode D'. An insulating layer 14 is also provided between the control electrode G and the active layer P of the control switch 20, and between the active layer P and the source electrode S and the drain electrode D.

[0103] In this embodiment, the light-blocking structure 30 can block the active layer P' of the photosensitive element 3, thereby preventing the active layer P' from having a low resistance and tending to be a conductor during the light doping (LDD doping) and heavy doping (N+ doping) processes. This also prevents the active layer P' from having a high test current value, causing the electrons inside the active layer P' to become saturated and unchanging under light.

[0104] In some embodiments, the material of the light-blocking structure 30 is the same as the material of the control electrode G of the control switch 20, or the material of the light-blocking structure 30 may also be transparent ITO (indium tin oxide).

[0105] In some embodiments, the control electrode G' of the photosensitive element 3 is on the same layer and made of the same material as the light-shielding layer LS disposed on the side of the control switch tube 20 near the substrate 1. The first control line G1 and the second control line G2, which are electrically connected to the control electrode G' of the photosensitive element 3, are also led out from the light-shielding layer LS and connected to the detection circuit 8. This can further reduce the width of the third area 101C and the fourth area 101D of the display panel, which is beneficial for realizing an ultra-narrow bezel or a full-screen display.

[0106] The display panel provided in this embodiment, by arranging the photosensitive element adjacent to the display pixel, can use the dummy switch of the dummy pixel as a photosensitive element to sense the ambient light, thereby avoiding the need for a separate photosensitive element and thus avoiding the need for the photosensitive element to increase the width of the non-display area of ​​the display panel, which is beneficial to achieving an extreme bezel or full screen of the display panel.

[0107] Secondly, embodiments of this disclosure also provide a display device, including the display panel described in the above embodiments.

[0108] By using the display panel in the above embodiments, the addition of a photosensitive element to the width of the non-display area of ​​the display device can be avoided, thereby facilitating the realization of an ultra-narrow bezel or a full-screen display.

[0109] The display device provided in this disclosure can be any product or component with display function, such as an LCD panel, LCD TV, LCD billboard, monitor, mobile phone, or navigator.

[0110] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A display panel having a display area and a non-display area, wherein the non-display area is located around the periphery of the display area; The display panel includes a substrate. Multiple display pixels are located on one side of the substrate and within the display area; Multiple photosensitive elements are located on the same side of the substrate as the display pixels and within the non-display area, characterized in that... The photosensitive element is disposed adjacent to the display pixel, and the photosensitive element is used to sense ambient light.

2. The display panel according to claim 1, characterized in that, The plurality of display pixels are arranged in an array; the plurality of photosensitive elements are arranged in an array; The photosensitive element and the display pixel are located in different rows but the same column; The photosensitive element includes a first photosensitive element and a second photosensitive element, and the second photosensitive element and the first photosensitive element are arranged sequentially along a direction away from the display area; The first photosensitive element has at least one row, and the second photosensitive element has at least one row; The display pixel includes a control switch transistor; The display panel also includes multiple grid lines and multiple data lines, at least located in the display area, wherein the grid lines and the data lines intersect in space, and the display pixels are located within the area enclosed by the intersection of the grid lines and the data lines. The display panel also includes a black matrix located on the side of the display pixels and the photosensitive element that is away from the substrate. The orthographic projection of the black matrix on the substrate covers the orthographic projection of the grid lines, the data lines, the control switch tube, and the second photosensitive element on the substrate. The black matrix and the orthographic projection of the first photosensitive element on the substrate do not overlap.

3. The display panel according to claim 2, characterized in that, It also includes multiple color resists of different colors, located on the side of the display pixel and the photosensitive element away from the substrate, and located in the display area and the non-display area; The orthogonal projection of the color resist on the substrate covers the orthogonal projection of the first photosensitive element on the substrate; The orthogonal projections of the first photosensitive element and the color resist on the substrate do not overlap.

4. The display panel according to claim 3, characterized in that, The colors of the color resist include red, green, and blue.

5. The display panel according to claim 4, characterized in that, The control electrode of the first photosensitive element in the same row is electrically connected to a first control line; The first electrode of the first photosensitive element in the same row is electrically connected to a first signal line; The second electrode of the first photosensitive element, which is in the same row and corresponds to the same color color resist, is electrically connected to a second signal line; The second electrode of the first photosensitive element, which is in the same row and corresponds to different colors of color resist, is electrically connected to different second signal lines; The second electrode of the first photosensitive element, which is in the same row and does not correspond to the color resist, is electrically connected to a third signal line.

6. The display panel according to claim 5, characterized in that, All rows of the first photosensitive element's control electrode are electrically connected to one first control line; All rows of the first photosensitive element are electrically connected to the first pole of one first signal line; The second electrode of the first photosensitive element corresponding to the same color resist in all rows is electrically connected to a second signal line; The second electrode of the first photosensitive element corresponding to different colors of the color resist in all rows is electrically connected to different second signal lines; The second electrode of the first photosensitive element in all rows that does not correspond to the color resist is electrically connected to one of the third signal lines.

7. The display panel according to claim 5 or 6, characterized in that, Different second signal lines spatially intersect each other. At the spatial intersection of different second signal lines, the different second signal lines are located on different layers; The portions other than the spatial intersections of the second signal lines are arranged on the same layer.

8. The display panel according to claim 5 or 6, characterized in that, The control electrode of the second photosensitive element in the same row is electrically connected to a second control line; The first electrode of the second photosensitive element in the same row is electrically connected to a fourth signal line; The second electrode of the second photosensitive element in the same row is electrically connected to a fifth signal line.

9. The display panel according to claim 8, characterized in that, All rows of the control electrode of the second photosensitive element are electrically connected to one second control line; All rows of the second photosensitive element's first electrode are electrically connected to one of the fourth signal lines; All rows of the second photosensitive element's second electrode are electrically connected to one of the fifth signal lines.

10. The display panel according to claim 9, characterized in that, The non-display area includes a first area and a second area, which are located on opposite sides of the display area along the extension direction of the data line; The photosensitive element is located in the first region and / or the second region.

11. The display panel according to claim 10, characterized in that, It also includes a detection circuit, located in the second area; The non-display area further includes a third area and a fourth area, located on opposite sides of the display area along the extension direction of the gate line; The first control line, the first signal line, and the second signal line extend through the third region to be electrically connected to the detection circuit; The third signal line, the second control line, the fourth signal line, and the fifth signal line extend through the fourth region to be electrically connected to the detection circuit; The display panel further includes a first gate driving circuit and a second gate driving circuit, wherein the first gate driving circuit is located in the third region; and the second gate driving circuit is located in the fourth region. The first control line, the first signal line, and the second signal line are located on the side of the first gate driving circuit that is away from the display area; The third signal line, the second control line, the fourth signal line, and the fifth signal line are located on the side of the second gate drive circuit away from the display area.

12. The display panel according to claim 10, characterized in that, The photosensitive element includes a low-temperature polysilicon transistor. The first area and the second area are each provided with two rows of photosensitive elements.

13. The display panel according to claim 10, characterized in that, The photosensitive element includes an amorphous silicon transistor. The first area and the second area are each provided with four rows of photosensitive elements.

14. The display panel according to claim 12, characterized in that, The control switch includes a low-temperature polysilicon transistor; The control electrode of the control switch is located on the side of its active layer away from the substrate; The control electrode of the photosensitive element is located on the side of its active layer closer to the substrate; The photosensitive element also includes a light-blocking structure, which is disposed on the same layer as the control electrode of the control switch tube.

15. A display device, characterized in that, Includes the display panel as described in any one of claims 1-14.

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