Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a plurality of sub-pixels, and each sub-pixel comprises a driving device and a pixel electrode electrically connected with the driving device; the driving device comprises a control electrode, an input electrode and an output electrode; the input electrode comprises a first electrode extending along a first direction and a second electrode extending along a second direction, so that the input electrode is of an L-shaped structure; the output electrode extends along the first direction and is spaced from the first electrode in the second direction; wherein the orthographic projection of the input electrode on the reference plane is located in the orthographic projection of the control electrode on the reference plane, so that the overlapping area between the input electrode and the control electrode is reduced, the stray capacitance between the input electrode and the control electrode is reduced, the data line load is reduced, the pixel charging efficiency is improved, and the power consumption is reduced; meanwhile, the arrangement of the input electrodes is more concentrated, so that the influence of the grid shading structure on the pixel region is reduced, and the aperture opening ratio of the display panel is further improved.

Description

Technical Field

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

[0002] With the advancement of technology, liquid crystal display (LCD) panels have been widely used in various fields, especially in electronic products due to their superior characteristics such as thinness, low power consumption, and no radiation. However, as resolution and image quality increase, the number of data lines in LCD panels increases proportionally, leading to a significant increase in the number of source driver chips providing data signals, thus raising production costs. To address this, a data line sharing (DLS) driving method is often used to reduce the number of data lines.

[0003] In display panels that adopt a data line sharing architecture, multiple sub-pixels share the same data line for driving. Although this can effectively reduce the number of data lines, compared with the traditional single-gate single-data-line (1G1D) pixel structure, the number of gate traces increases. A wider gate light-shielding structure needs to be set in the pixel area to avoid light leakage and crosstalk problems, which in turn occupies the effective light-transmitting area of ​​the pixel, resulting in a decrease in pixel aperture ratio and limiting further improvement of display performance. Summary of the Invention

[0004] This application provides a display panel and display device to reduce the impact of the gate light-shielding structure on the pixel area, thereby improving the aperture ratio of the display panel.

[0005] To achieve the above functions, the technical solutions provided in this application are as follows: This application embodiment provides a display panel including a plurality of sub-pixels, each sub-pixel including a driving device and a pixel electrode electrically connected to the driving device; the driving device includes: The control electrode is electrically connected to the scan line. An input electrode is electrically connected to a data line and includes a first electrode and a second electrode connected to each other. The first electrode extends along a first direction, and the second electrode extends along a second direction, which intersects the first direction. An output electrode is electrically connected to a pixel electrode, the output electrode extends along the first direction, and the output electrode and the first electrode are spaced apart in the second direction; The orthographic projection of the input electrode on the reference plane is located within the orthographic projection of the control electrode on the reference plane, and the end of the second electrode away from the first electrode has a cutoff end face. The reference plane is parallel to the light-emitting surface of the display panel.

[0006] Optionally, in one embodiment, the output electrode is located on one side of the second electrode along the first direction, and the output electrode and the second electrode are spaced apart; wherein the output electrode is linearly arranged.

[0007] Optionally, in one embodiment, the end of the second electrode away from the first electrode has a cutoff end face; Wherein, on the reference plane, the distance between the side of the output electrode away from the first electrode and the side of the first electrode close to the output electrode is equal to the distance between the cut-off end face and the side of the first electrode close to the output electrode.

[0008] Optionally, in one embodiment, the display panel includes: Multiple sub-pixel groups are arranged along a first direction and a second direction. Each sub-pixel group includes at least two sub-pixels. Each sub-pixel includes a driving device and a pixel electrode electrically connected to the driving device. The pixel electrodes in each sub-pixel group are arranged along the first direction. Multiple data lines are arranged at intervals along the first direction, with one data line between two adjacent columns of sub-pixel groups, and two sub-pixels in any sub-pixel group are connected to the same data line; The driving device is located between two adjacent rows of the sub-pixel groups, and on the reference plane, the length of the control electrode in the first direction is greater than the length of the control electrode in the second direction.

[0009] Optionally, in one embodiment, the display panel further includes a support column disposed on the driving device; Wherein, on the reference plane, the dimension of the support column along the first direction is greater than the dimension of the control electrode along the first direction, and the dimension of the support column along the second direction is smaller than the dimension of the control electrode along the second direction.

[0010] Optionally, in one embodiment, the support column is elongated, with its major axis parallel to the first direction and its minor axis parallel to the second direction.

[0011] Optionally, in one embodiment, the orthographic projection of the support post on the reference plane overlaps with the orthographic projection of the output electrode on the reference plane, and the orthographic projection of the support post on the reference plane overlaps with the orthographic projection of the input electrode on the reference plane.

[0012] Optionally, in one embodiment, the display panel further includes a support pad located on one side of the input electrode along the first direction and on one side of the output electrode along the second direction, wherein the orthographic projection of the support pad on the reference plane overlaps with the orthographic projection of the support column on the reference plane. The support pad, the input electrode, and the output electrode are arranged in the same layer.

[0013] Optionally, in one embodiment, the display panel includes a plurality of scan line groups arranged along the second direction, each scan line group including a first scan line and a second scan line extending along the first direction, the first scan line and the second scan line being respectively disposed on both sides of a corresponding row of sub-pixel groups along the second direction; In this configuration, the first scan line of one of the two adjacent scan line groups is connected to a sub-pixel in a row of sub-pixel groups, and the second scan line of the other scan line group is connected to another sub-pixel in a row of sub-pixel groups.

[0014] This application also provides a display device, which includes any of the display panels described above.

[0015] The beneficial effects of the embodiments of this application are as follows: This application provides a display panel and a display device; the display panel includes multiple sub-pixel groups, multiple data lines and a common electrode line, each sub-pixel group includes at least two sub-pixels, each sub-pixel includes a driving device and a pixel electrode electrically connected to the driving device, the pixel electrodes in each sub-pixel group are arranged along a first direction; multiple data lines are arranged at intervals along the first direction, and a data line is provided between two adjacent columns of sub-pixel groups; the common electrode line is located between two adjacent data lines and includes multiple first common segments, the first common segments are located between two adjacent pixel electrodes; the driving device includes a driving gate; by dissimilarly ... Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the display panel provided in this application; Figure 2 This is a schematic diagram of the film layer structure of the display panel provided in this application; Figure 3 For the purposes of this application Figure 1 Schematic diagram of the structure at point M in the central region; Figure 4 A partial top view of the display panel provided in this application; Figure 5 A top view of the display panel provided in this application without the support columns; Figure 6 A partial top view of the black matrix provided in this application; Figure 7 A schematic diagram of the subpixel arrangement of the display panel provided in this application; Figure 8 This is a schematic diagram of the structure of the display device provided in this application.

[0018] Explanation of reference numerals in the attached figures: 1-Display panel; 100-Pixel area; 200-Non-pixel area; 10-Subpixel group; 11-Subpixel; 111-Driver device; 111A-First driver device; 111B-Second driver device; 112-Pixel electrode; 11A-First subpixel; 11B-Second subpixel; 110R-Red subpixel; 110G-Green subpixel; 110B-Blue subpixel; 20-Data line; 30-Scan line group; 31-First scan line; 32-Second scan line; 40-Common electrode line; 50-Common electrode; 60-Via; 70-First substrate; 71-First base; 72-First electrode layer; 721-Control electrode; 73-Gate insulating layer; 74-Active layer; 75-Pixel Electrode layer; 76-Second electrode layer; 761-Input electrode; 7611-First electrode; 7612-Second electrode; 76121-Cutoff end face; 762-Output electrode; 77-Passivation layer; 78-Third electrode layer; 700-Thin film transistor; 80-Second substrate; 81-Second substrate; 82-Color filter layer; 821-Black matrix; 8211-Gate light-shielding structure; 822-Color resist block; 83-Planing layer; 90-Liquid crystal layer; d1-First pitch; d2-Second pitch; L1-First dimension; L2-Second dimension; L3-Third dimension; L4-Fourth dimension; 110-Support pillar; 120-Support pad; 2-Display device; 2A-Middle frame; X-First direction; Y-Second direction. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower in the actual use or working mode of the device, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only, and features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections or connections that allow communication; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] The following disclosure provides many different embodiments for implementing different structures of this application. To simplify the disclosure of this application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0023] Please combine Figures 1 to 7 This embodiment provides a display panel 1, which includes a pixel area 100 and a non-pixel area 200 located on at least one side of the pixel area 100. The pixel area 100 is used to display image information, and the non-pixel area 200 is used to set driving lines, auxiliary structures, or can be the border area of ​​the display panel 1.

[0024] The display panel 1 includes multiple sub-pixel groups 10, multiple data lines 20, multiple scan line groups 30, and a common electrode line 40 located within a pixel area 100. The multiple sub-pixel groups 10 are arranged along a first direction X and a second direction Y. Each sub-pixel group 10 includes two sub-pixels 11 spaced apart along the first direction X. Each sub-pixel 11 includes a driving device 111 and a pixel electrode 112 electrically connected to the driving device 111. The driving device 111 is disposed between two adjacent rows of sub-pixel groups 10 along the second direction Y. The pixel electrodes 112 in each sub-pixel group 10 are arranged along the first direction X to realize the lateral driving of the sub-pixels 11.

[0025] Multiple data lines 20 are arranged at intervals along the first direction X and extend along the second direction Y. A data line 20 is provided between two adjacent columns of sub-pixel groups 10, and two sub-pixels 11 in any sub-pixel group 10 are connected to the same data line 20, thereby realizing data line sharing (DLS) driving.

[0026] Furthermore, the polarities of adjacent data lines 20 are opposite, while the polarities of the two sub-pixels 11 in each sub-pixel group 10 are the same, for example, both are positive or negative. Simultaneously, the polarities of sub-pixels 11 located on opposite sides of the same data line 20 are opposite, which effectively reduces the number of data lines 20, saving wiring space and the number of driver chips, thereby reducing costs. In addition, the common electrode line 40 is set in the same layer as the scan line, meaning it can be fabricated using the same metal layer, simplifying the process and reducing interlayer stacking height, which is beneficial for improving the aperture ratio.

[0027] Multiple scan line groups 30 are arranged along the second direction Y. A scan line group 30 is disposed between two adjacent rows of sub-pixel groups 10 along the second direction Y. Each scan line group 30 includes a first scan line 31 and a second scan line 32 extending along the first direction X. The first scan line 31 and the second scan line 32 are respectively disposed on both sides of the corresponding row of sub-pixel groups 10 along the second direction Y. The first scan line 31 is connected to a sub-pixel 11 in a row of sub-pixel groups 10, and the second scan line 32 is connected to another sub-pixel 11 in a row of sub-pixel groups 10, thereby realizing row selective driving, which helps to reduce row driving load, increase scanning speed and reduce power consumption.

[0028] Specifically, the display panel 1 may include a red sub-pixel 110R, a green sub-pixel 110G, and a blue sub-pixel 110B, and each sub-pixel group 10 may include two different sub-pixels among the red sub-pixel 110R, the green sub-pixel 110G, and the blue sub-pixel 110B. For example, in the first direction X, red sub-pixels 110R, green sub-pixels 110G, and blue sub-pixels 110B are arranged repeatedly, and the sub-pixels 11 in each column have the same color. Different sub-pixel groups 10 are arranged with different color combinations, which may include red sub-pixels 110R and green sub-pixels 110G, blue sub-pixels 110B and red sub-pixels 110R, and green sub-pixels 110G and blue sub-pixels 110B, thereby forming a periodically alternating sub-pixel 11 color distribution. In addition, a first scan line 31 and a second scan line 32 are provided on both sides of each row of sub-pixel groups 10, that is, a first scan line 31 and a second scan line 32 are provided between two adjacent rows of sub-pixel groups 10, which are used to control the conduction of different sub-pixels 11 in the sub-pixel group 10 respectively, thereby realizing row selective driving.

[0029] Furthermore, the sub-pixel 11 also includes a common electrode 50 corresponding to the pixel electrode 112, and the common electrodes 50 of two adjacent sub-pixels 11 are electrically connected to each other; wherein, the display panel 1 is provided with at least one via 60, and the common electrode 50 passes through the via 60 and is electrically connected to the common electrode line 40, thereby realizing that the common signal is transmitted from the common electrode 50 to the common electrode 50 of each sub-pixel 11, ensuring that each sub-pixel 11 can obtain a stable common potential.

[0030] It should be noted that the angle between the first direction X and the second direction Y can be greater than 0 and less than or equal to 90 degrees. For example, in this embodiment, the first direction X can be the width direction of the display panel 1, the second direction Y can be the length direction of the display panel 1, and the angle between the first direction X and the second direction Y can be 90 degrees.

[0031] In one embodiment, the display panel 1 can be a liquid crystal display panel 1. The display panel 1 includes a first substrate 70 and a second substrate 80 disposed opposite to each other, and a liquid crystal layer 90 located between the first substrate 70 and the second substrate 80. The first substrate 70 can be an array substrate, the second substrate 80 is a counter substrate, and the first substrate 70 and the second substrate 80 are sealed to form a liquid crystal cell to accommodate the liquid crystal layer 90. The liquid crystal layer 90 includes a plurality of liquid crystal molecules, and the arrangement state of the liquid crystal molecules changes the light transmittance as the electric field between the two substrates changes to achieve display.

[0032] The first substrate 70 includes a first base 71 and an array layer located on the first base 71. The array layer may include multiple thin-film transistors 700. The control terminals of the thin-film transistors 700 are electrically connected to the scan lines and are used to selectively turn on or off under the control of the scan signal, so as to input the data signal on the data line 20 into the corresponding pixel electrode 112, thereby realizing the driving of liquid crystal molecules and image display, and achieving precise driving of liquid crystal molecules and image display. The thin-film transistors 700 may be etch-block type, back-channel etch type, or classified into bottom-gate thin-film transistors, top-gate thin-film transistors, etc., according to the position of the driving gate and the active layer 74. This embodiment does not limit this.

[0033] Furthermore, the first substrate 70 may include a first electrode layer 72 on the first substrate 71, a gate insulating layer 73 on the first electrode layer 72, an active layer 74 and a pixel electrode layer 75 on the gate insulating layer 73, a second electrode layer 76 on the active layer 74, a passivation layer 77 covering the second electrode layer 76, the active layer 74 and the pixel electrode layer 75, and a third electrode layer 78 on the passivation layer 77.

[0034] Specifically, the first electrode layer 72 includes a control electrode 721 of the driving device 111, a scan line group 30, and a common electrode line 40. The control electrode 721 is electrically connected to the scan line and is used to receive a scan signal to control the on and off of the corresponding thin-film transistor 700 under the control of the scan signal. The gate insulating layer 73 is used to electrically insulate the first electrode layer 72 from the above active layer 74. The active layer 74 is used to form the channel region of the thin-film transistor 700. The second electrode layer 76 is disposed on the active layer 74 and is used to form the input electrode 761 of the thin-film transistor 700. The output electrode 762 and the input electrode 761 are electrically connected to the data line 20 to receive data signals transmitted via the data line 20; the pixel electrode layer 75 is electrically connected to the output electrode 762 to receive data signals when the thin-film transistor 700 is turned on; the passivation layer 77 is used to cover and protect the active layer 74, the second electrode layer 76 and the pixel electrode layer 75; the third electrode layer 78 can be a common electrode layer, which includes a plurality of common electrodes 50 for providing a common potential to the display panel 1 and cooperating with the pixel electrode 112 to form an electric field that drives the liquid crystal molecules.

[0035] The via 60 penetrates the passivation layer 77 and part of the gate insulating layer 73, and exposes part of the common electrode line 40. The common electrode 50 passes through the via 60 and is electrically connected to the common electrode line 40, thereby enabling the common signal to be transmitted from the common electrode 50 to the common electrode 50 of each sub-pixel 11, ensuring that each sub-pixel 11 can obtain a stable common potential.

[0036] In addition, the materials of the first electrode layer 72, the second electrode layer 76, the pixel electrode layer 75 and the third electrode layer 78 can all be transparent conductive materials, so as to reduce the obstruction of the pixel area 100 while meeting the conductivity requirements, which is beneficial to improving the aperture ratio of the display panel 1.

[0037] The second substrate 80 includes a second substrate 81, a color filter layer 82 located on the side of the second substrate 81 near the first substrate 70, and a planarization layer 83 located on the side of the color filter layer 82 near the first substrate 70.

[0038] The color filter layer 82 includes a black matrix 821 and multiple color resist blocks 822. The black matrix 821 has multiple openings, and a color resist block 822 is disposed in a corresponding opening. The color resist block 822 is used to selectively transmit backlight through the liquid crystal layer 90 to achieve color display of the corresponding sub-pixel 11. The black matrix 821 is located between two adjacent color resist blocks 822 to block light leakage from the non-pixel area 200, thereby improving display contrast and reducing inter-pixel crosstalk. The planarization layer 83 covers the color filter layer 82 to reduce the height difference on the surface of the color filter layer 82, thereby providing a flat support interface for subsequent layers.

[0039] In one embodiment, the driving device 111 includes a control electrode 721, an input electrode 761, and an output electrode 762. The input electrode 761 and the output electrode 762 are both disposed above the control electrode 721 and are located on both sides of the control electrode 721, respectively. The input electrode 761 is connected to the data line 20, and the output electrode 762 is connected to the pixel electrode 112, so that the data signal provided by the data line 20 is transmitted to the corresponding pixel electrode 112 via the driving device 111 to realize the driving control of the sub-pixel 11.

[0040] Specifically, the input electrode 761 includes a first electrode 7611 and a second electrode 7612 connected to each other. The first electrode 7611 extends along a first direction X, and the second electrode 7612 extends along a second direction Y. The output electrode 762 extends along the first direction X and is spaced apart from the first electrode 7611 in the second direction Y. The orthographic projection of the input electrode 761 on the reference plane is located within the orthographic projection of the control electrode 721 on the reference plane, and the reference plane is parallel to the light-emitting surface of the display panel 1.

[0041] Understandably, in the prior art, the input electrode 761 of the driving device 111 typically adopts a U-shaped structure, resulting in a large overlap area between the input electrode 761 and the control electrode 721. This not only increases the parasitic capacitance between the two, increasing the driving load required by the data line 20 during charging and discharging, but also reduces the charging speed of the pixel and increases power consumption. At the same time, because the routing of the U-shaped input electrode 761 is relatively dispersed, the wiring density in the non-pixel area 200 is increased, which not only restricts the layout freedom of other devices, but also forces the light-shielding part to be widened accordingly, so that the light-shielding part occupies the area of ​​the pixel area 100, resulting in a decrease in the pixel aperture ratio.

[0042] Continuing from the above, this embodiment configures the input electrode 761 to include a first electrode 7611 extending along the first direction X and a second electrode 7612 extending along the second direction Y, giving the input electrode 761 an L-shaped structure. Furthermore, the orthographic projection of the input electrode 761 on the reference plane is located within the orthographic projection range of the control electrode 721, allowing the input electrode 761 to complete wiring within the coverage area of ​​the control electrode 721. This reduces the overlap area between the input electrode 761 and the control electrode 721, lowers the parasitic capacitance between them, and reduces the load on the data line 20, which is beneficial for improving pixel charging efficiency and reducing power consumption.

[0043] Meanwhile, because the input electrode 761 has an L-shaped structure, it is concentrated within the corresponding area of ​​the control electrode 721. This effectively limits the extension range of the input electrode 761 on the reference plane, preventing it from extending extensively into the pixel area 100. Consequently, the overlapping area between the input electrode 761 and the control electrode 721 is concentrated and controlled, reducing the area of ​​the corresponding light-shielding portion and minimizing its occupation of the pixel area 100. This effectively increases the effective light-transmitting area of ​​the pixel and improves the aperture ratio of the display panel 1.

[0044] In one embodiment, the output electrode 762 is located on one side of the first electrode 7611 along the second direction Y, and the output electrode 762 is located on one side of the second electrode 7612 along the first direction X, with the output electrode 762 and the second electrode 7612 spaced apart. On the reference plane, the output electrode 762 is linearly arranged, meaning it can be a straight structure. In this case, the output electrode 762 can have a relatively small area, thereby reducing light occlusion and improving the pixel aperture ratio of the display panel 1. Furthermore, since the output electrode 762 is a straight structure, it also helps to shorten the extension length of the output electrode 762 in the first direction X, thereby reducing resistance loss and signal delay during signal transmission in the output electrode 762.

[0045] Specifically, the end of the second electrode 7612 away from the first electrode 7611 has a cutoff end face 76121; on the reference plane, the distance between the side of the output electrode 762 away from the first electrode 7611 and the side of the first electrode 7611 near the output electrode 762 is a first distance d1, and the distance between the cutoff end face 76121 and the side of the first electrode 7611 near the output electrode 762 is a second distance d2; wherein, the first distance d1 is equal to the second distance d2, so that the effective channel length in the second direction Y of the channel formed between the first electrode 7611 and the output electrode 762 is consistent with the geometric relationship between the channel width defined by the first electrode 7611 and the second electrode 7612, thereby keeping the proportional relationship between the length direction and the width direction of the channel stable, that is, the width-to-length ratio of the channel remains basically constant; thus, the driving current fluctuation caused by the asymmetry of the electrode shape or the change of the channel length can be avoided, which is beneficial to stabilizing the threshold voltage, current characteristics and pixel driving consistency of the driving device 111.

[0046] It should be noted that the cutoff end face 76121 refers to the end of the second electrode 7612 that is far from the first electrode 7611 having a clearly defined termination end, thereby limiting the extension length of the second electrode 7612 in that direction; the cutoff end face 76121 can be a straight end face perpendicular to the second direction Y, or an end face structure approximately perpendicular to the second direction Y; by setting the cutoff end face 76121 at the end of the second electrode 7612 that is far from the first electrode 7611, the extension of the second electrode 7612 in the second direction Y is limited, preventing it from continuing to extend into the non-pixel area 200 or adjacent structures, thereby reducing the occlusion effect of the metal traces in the non-pixel area 200 on the pixel area 100.

[0047] Understandably, compared to the non-uniform channel formed by the U-shaped or folded-back input / output electrode 762 structure in the prior art, this embodiment makes the channel have a regular straight-line structure by limiting the relative spacing between the output electrode 762, the first electrode 7611 and the second electrode 7612. This avoids the problem of length variation or inconsistency of equivalent width in the channel at different positions, thereby reducing the uneven current distribution, resistance fluctuation and driving characteristic dispersion caused by the irregular channel shape.

[0048] Meanwhile, since the aspect ratio of the channel remains constant, the turn-on current, threshold voltage and transconductance characteristics of the driving device 111 are more stable, which helps to improve the electrical consistency between pixels and reduce the risk of uneven display brightness.

[0049] Furthermore, while ensuring that the equivalent size of the channel remains unchanged, by setting the input electrode 761 to an L-shaped structure and arranging it compactly, the area occupied by the driving device 111 in the display panel 1 can be reduced without sacrificing device performance, thereby reducing the light-blocking area and improving the effective aperture ratio of the pixels.

[0050] Furthermore, on the reference plane, the control electrode 721 has a first dimension L1 in the first direction X and a second dimension L2 in the second direction Y, wherein the first dimension L1 of the control electrode 721 is larger than the second dimension L2 of the control electrode 721, thereby making the control electrode 721 a long strip structure extending along the first direction X, reducing the coverage area of ​​the control electrode 721 in the second direction Y, thereby reducing the overlap area between the control electrode 721 and the input electrode 761 and / or the output electrode 762, reducing the parasitic capacitance between the control electrode 721 and the input electrode 761, and reducing the load on the data line 20; at the same time, the extension of the control electrode 721 along the first direction X makes the arrangement of the driving device 111 more compact, which is beneficial to improving the pixel aperture ratio.

[0051] Specifically, the parasitic capacitance between the control electrode 721 and the input electrode 761 is greater than the parasitic capacitance between the control electrode 721 and the output electrode 762. As a result, during the pixel driving process, the input electrode 761 has a dominant influence on the control electrode 721, which is beneficial for the accurate and fast transmission of the data line 20 signal. At the same time, the parasitic effect of the output electrode 762 is small, which avoids increasing the pixel charging load and is beneficial for improving the pixel charging efficiency and reducing power consumption.

[0052] Furthermore, the second dimension L2 of the control electrode 721 is greater than or equal to 12 micrometers and less than or equal to 22 micrometers, thereby ensuring that the control electrode 721 maintains sufficient channel length while reducing the overlapping area. This is beneficial for maintaining the width-to-length ratio of the channel of the driving device 111 and ensuring stable driving performance. At the same time, by adjusting the dimension of the control electrode 721 in the second direction Y, the occlusion of the control electrode 721 on the pixel domain can be reduced, which is beneficial for improving the pixel aperture ratio and providing space for the close arrangement of multiple sub-pixel groups 10 and high-resolution display.

[0053] In one embodiment, the black matrix 821 covers at least the areas corresponding to the data line 20, scan line, control electrode 721 of the driving device 111, input electrode 761 and output electrode 762 in the first substrate 70, and forms a gate light-shielding structure 8211 in the gate region where the control electrode 721 is located, which is used to block the conductive structure located in the non-pixel area 200, so as to avoid backlight transmission leakage caused by the overlap or proximity of the conductive structure such as the control electrode 721 with the pixel area 100.

[0054] Furthermore, since the input electrode 761 is configured in an L-shaped structure, the extension direction of the input electrode 761 on the reference plane is limited by the first direction X and the second direction Y, thereby avoiding the large-scale expansion of the input electrode 761 in the direction of the pixel area 100. The overlapping area between the input electrode 761 and the control electrode 721 is concentrated and controllable, which is beneficial to reducing the projection range of the gate light-shielding structure 8211 on the reference plane.

[0055] Meanwhile, the control electrode 721 is configured as an elongated structure extending along the first direction X, making its size relatively small in the second direction Y, thereby further reducing the coverage area of ​​the control electrode 721 within the pixel area 100. Therefore, the gate light-shielding structure 8211 corresponding to the control electrode 721 does not need to be excessively extended in the second direction Y to achieve effective light shielding, thus correspondingly reducing the overall coverage area of ​​the gate light-shielding structure 8211.

[0056] It is understandable that by coordinating the design of the structure of the input electrode 761 and the shape of the control electrode 721, the overall area occupied by the driving device 111 in the display panel 1 can be effectively reduced without affecting the electrical performance and driving stability of the driving device 111. This reduces the encroachment of the gate light-shielding structure 8211 on the pixel area 100 and reduces the obstruction of the effective light-transmitting area of ​​the pixel area 100, thereby effectively improving the pixel aperture ratio of the display panel 1.

[0057] In one embodiment, each sub-pixel group 10 includes a first sub-pixel 11A and a second sub-pixel 11B. The first sub-pixel 11A includes a first driving device 111A, and the second sub-pixel 11B includes a second driving device 111B. In two adjacent columns of sub-pixel groups 10, the first driving device 111A and the second driving device 111B are arranged adjacent to each other. A first channel is formed between the first electrode 7611 and the second electrode 7612 of the first driving device 111A, and a second channel is formed between the first electrode 7611 and the second electrode 7612 of the second driving device 111B. Both the first channel and the second channel are straight channels, and the opening directions of the first channel and the second channel are opposite. This achieves the staggered arrangement of multiple channels, effectively reducing electrical interference and parasitic coupling between adjacent driving devices 111, and avoiding the problems of electric field overlap and uneven current distribution caused by the same channel direction.

[0058] Meanwhile, the straight channel ensures the shortest carrier transport path, which reduces channel resistance and improves migration efficiency, thus improving the conduction capability and response speed of the driving device 111. In addition, the opposite opening directions of the first and second channels can make the overall layout of the driving device 111 more compact, reduce the area occupied by the driving device 111, thereby reducing the impact of the light-shielding part on the pixel area 100 and improving the pixel aperture ratio.

[0059] In one embodiment, the display panel 1 further includes a plurality of support pillars 110, each support pillar 110 being correspondingly disposed with a driving device 111. On the reference plane, the support pillar 110 has a third dimension L3 along the first direction X and a fourth dimension L4 along the second direction Y. The third dimension L3 of the support pillar 110 is larger than the first dimension L1 of the control electrode 721, and the fourth dimension L4 of the support pillar 110 is smaller than the second dimension L2 of the control electrode 721. This allows the support pillar 110 to reduce the range of the light-shielding part corresponding to it while ensuring the overall mechanical stability of the display panel 1, thereby reducing the occupation of the light-shielding part on the pixel area 100 and improving the pixel aperture ratio, which is beneficial to improving the display light transmission efficiency and brightness uniformity.

[0060] Furthermore, the two ends of the support column 110 are respectively connected to the first substrate 70 and the second substrate 80, thereby maintaining the gap between the first substrate 70 and the second substrate 80. The support column 110 has a long strip structure, with the major axis of the support column 110 parallel to the first direction X and the minor axis of the support column 110 parallel to the second direction Y. By having the support column 110 correspond to the driving device 111 and both adopt a long strip structure, not only is the mechanical stability of the driving device 111 guaranteed, but also the support column 110 is prevented from occupying too much light-transmitting area, which helps to reduce the impact of the light-shielding part on the pixel area 100, thereby improving the aperture ratio of the display panel 1.

[0061] Specifically, the orthographic projection of the support column 110 on the reference plane overlaps with the orthographic projection of the output electrode 762 on the reference plane, and the orthographic projection of the support column 110 on the reference plane overlaps with the orthographic projection of the input electrode 761 on the reference plane, effectively supporting the thin film structure, preventing the display panel 1 from bending, deforming or breaking under external force, and improving the reliability and service life of the display panel 1.

[0062] The fourth dimension L4 of the support column 110 is greater than or equal to 10 micrometers and less than or equal to 15 micrometers. By limiting the dimension of the support column 110 in the second direction Y, the thin film device can be effectively supported, preventing the display panel 1 from bending or breaking under external force or during processing. At the same time, it avoids the support column 110 from being too long and blocking the light transmission of the pixel area 100.

[0063] Furthermore, the display panel 1 also includes a support pad 120, which is located on the side of the input electrode 761 along the first direction X and on the side of the output electrode 762 along the second direction Y. The orthographic projection of the support pad 120 on the reference plane overlaps with the orthographic projection of the support column 110 on the reference plane, thereby enhancing the support performance of the first substrate 70 on the support column 110. This ensures that when the display panel 1 is subjected to external force, the force on the support column 110 can be evenly distributed, effectively preventing the support column 110 from tilting, shifting, or collapsing due to excessive local force, thereby ensuring that the display panel 1 maintains a stable structure and good image display effect.

[0064] It should be noted that, since the input electrode 761 has an L-shaped structure and the output electrode 762 has a straight structure, the force on the support column 110 is mainly concentrated within its own area. The thin film layer in the area where the input electrode 761 and the output electrode 762 are located may experience local stress concentration due to external force or the weight of the display panel 1 itself, which can easily lead to thin film bending, cracking or unstable device performance.

[0065] It is understood that by placing the support pad 120 on one side of the input electrode 761 along the first direction X and on the other side of the output electrode 762 along the second direction Y, and by having the orthographic projection of the support pad 120 on the reference plane overlap with the orthographic projection of the support pillar 110 on the reference plane, the support pad 120 can effectively supplement the stress-bearing area of ​​the support pillar 110. The thin film stress in the areas where the L-shaped input electrode 761 and the linear output electrode 762 are located can be dispersed, reducing the impact of stress concentration on the active layer 74, the gate insulating layer 73 and the electrode layer, thereby improving the stability of the thin film transistor 700 and reducing the risk of warping, tilting or breaking during processing, transportation or use.

[0066] Furthermore, the support pad 120 is disposed in the same layer as the input electrode 761 and the output electrode 762, and the structure of the support pad 120, the input electrode 761 and the output electrode 762 can be formed simultaneously in one photolithography process, thereby simplifying the manufacturing process and improving the production efficiency of the display panel 1. At the same time, it avoids the need for additional photolithography processes to make the support pad 120, thereby reducing the manufacturing cost of the display panel 1 and ensuring the reliability and dimensional accuracy of the structure.

[0067] Please combine Figures 1 to 8 This embodiment also provides a display device 2, which includes the display panel 1 in any of the above embodiments; wherein, the display device 2 may further include a middle frame 2A, which is integrated with the display panel 1 to provide support, fixation and protection for the display panel 1.

[0068] It is understood that the display panel 1 has been described in detail in the above embodiments and will not be described again here; in particular, since the display device 2 adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0069] In specific applications, the display device 2 can be at least one of the following devices with display functions: smartphone, tablet, mobile phone, video phone, e-book reader, desktop computer, laptop, netbook, workstation, server, personal digital assistant, portable media player, MP3 player, mobile medical device, camera, game console, digital camera, car navigation system, electronic billboard, ATM or wearable device.

[0070] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0071] The above provides a detailed description of a display panel and display device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel, characterized by, The display panel comprises a plurality of sub-pixels, each of the sub-pixels comprising a driving device and a pixel electrode electrically connected to the driving device. The driving device comprises: a control electrode electrically connected to a scan line; an input electrode electrically connected to a data line and comprising a first electrode extending in a first direction and a second electrode extending in a second direction intersecting the first direction; an output electrode electrically connected to the pixel electrode, the output electrode extending in the first direction and being spaced apart from the first electrode in the second direction; wherein a normal projection of the input electrode on a reference plane is located within a normal projection of the control electrode on the reference plane, the reference plane being parallel to a light-out plane of the display panel.

2. The display panel of claim 1, wherein, The output electrode is located on one side of the second electrode in the first direction and is spaced apart from the second electrode; wherein the output electrode is linearly arranged.

3. The display panel of claim 2, wherein, An end of the second electrode away from the first electrode has a cut-off end surface; wherein, on the reference plane, a distance between a side of the output electrode away from the first electrode and a side of the first electrode close to the output electrode is equal to a distance between the cut-off end surface and the side of the first electrode close to the output electrode.

4. The display panel of any one of claims 1-3, wherein, The display panel comprises: a plurality of sub-pixel groups arranged in a first direction and a second direction, each of the sub-pixel groups comprising at least two of the sub-pixels, each of the sub-pixels comprising the driving device and the pixel electrode electrically connected to the driving device, and the pixel electrodes in each of the sub-pixel groups being arranged in the first direction; a plurality of the data lines arranged in the first direction, one of the data lines being arranged between two adjacent columns of the sub-pixel groups, and two of the sub-pixels in any of the sub-pixel groups being connected to the same data line; wherein the driving device is located between two adjacent rows of the sub-pixel groups, and, on the reference plane, a length of the control electrode in the first direction is greater than a length of the control electrode in the second direction.

5. The display panel of claim 4, wherein, The display panel further comprises a support column arranged on the driving device; wherein, on the reference plane, a dimension of the support column in the first direction is greater than a dimension of the control electrode in the first direction, and a dimension of the support column in the second direction is less than a dimension of the control electrode in the second direction.

6. The display panel of claim 5, wherein, The support column is in the shape of a long strip, a long axis direction of the support column is parallel to the first direction, and a short axis direction of the support column is parallel to the second direction.

7. The display panel of claim 6, wherein, A normal projection of the support column on the reference plane and a normal projection of the output electrode on the reference plane overlap with each other, and a normal projection of the support column on the reference plane and a normal projection of the input electrode on the reference plane overlap with each other.

8. The display panel of claim 7, wherein, The display panel further comprises a support pad located at one side of the input electrode along the first direction and at one side of the output electrode along the second direction, a projection of the support pad on the reference plane and a projection of the support column on the reference plane overlap with each other. The support pad, the input electrode and the output electrode are arranged in the same layer.

9. The display panel of claim 6, wherein, The display panel comprises a plurality of scan line groups arranged along the second direction, each of the scan line groups comprises first scan lines and second scan lines extending along the first direction, the first scan lines and the second scan lines are arranged on both sides of a corresponding row of the sub-pixel groups along the second direction respectively. The first scan line of one of the scan line groups of the adjacent two scan line groups is connected with one of the sub-pixels in a row of the sub-pixel groups, and the second scan line of the other of the scan line groups of the adjacent two scan line groups is connected with another of the sub-pixels in a row of the sub-pixel groups.

10. A display device, characterized by comprising: The display panel as claimed in any one of claims 1-9.

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