Display panel and display device
Through a unique primary and secondary pixel electrode design, the voltage is independently controlled and surrounds the secondary pixel electrode, solving the problem of low transmittance in VA-type display panels and achieving high transmittance, good viewing angle, and improved color shift.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHA HKC OPTOELECTRONICS CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-21
AI Technical Summary
When existing VA-type display panels achieve 8-domain display, the primary and secondary sub-pixel spacing areas occupy a large area, resulting in reduced transmittance and affecting the viewing angle and color shift improvement effect.
It adopts a unique design of main pixel electrode and sub-pixel electrode, including a first main electrode, a second main electrode, a first branch electrode and a second branch electrode forming a frame electrode, and the sub-pixel electrode is formed by the cross connection of the third main electrode and the fourth main electrode. The branch electrode is independently set to surround the sub-pixel electrode and the voltage can be independently controlled.
While achieving 8-domain display, it improves the transmittance of pixel units, reduces non-display light-transmitting areas, improves viewing angle and color shift effect, and maintains normal display even when the electrode breaks.
Smart Images
Figure CN224536310U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of display technology, specifically relating to a display panel and a display device. Background Technology
[0002] Thin Film Transistor-Liquid Crystal Display (TFT-LCD) panels are currently the mainstream display panels in the large-size market. Based on the different liquid crystal driving methods, LCD panels can be divided into In-Plate Switch (IPS) type and Vertical Alignment (VA) type. VA type display panels have the main advantage of higher contrast ratio, but compared to IPS type display panels, they need improvement in viewing angle and color shift.
[0003] To optimize the viewing angle and color shift performance of VA-type display panels, existing technologies typically employ multi-domain designs, such as an 8-domain (8D) design. An 8-domain pixel design divides a pixel unit into a main pixel and a sub-pixel, with each main and sub-pixel's pixel electrode divided into four domains. The main and sub-pixels are positioned on opposite sides of the pixel driving circuit, and their driving voltages differ, thus achieving an 8-domain display.
[0004] Because two sub-pixels, primary and secondary, are required to achieve the 8-domain effect, the area between the primary and secondary sub-pixels occupies a large area. This part is a non-display light-transmitting area, which greatly reduces the transmittance of the pixel unit and affects the effect of 8-domain display in improving viewing angle and color shift. Summary of the Invention
[0005] The purpose of this application is to provide a display panel and display device that at least improves the transmittance of pixel units.
[0006] To achieve the above objectives, this application provides a display panel, including a first substrate, a driving circuit layer, and an electrode layer, wherein the driving circuit layer and the electrode layer are sequentially formed on the first substrate, and the electrode layer includes:
[0007] The main pixel electrode includes a first main electrode extending in the row direction, a second main electrode extending in the column direction, a first branch electrode, and a second branch electrode. The two first main electrodes are spaced apart and the two second main electrodes are spaced apart. The first main electrodes and the second main electrodes are connected to form a border electrode. The first branch electrode and the second branch electrode are disposed within the border electrode and connected to the border electrode.
[0008] The sub-pixel electrode includes a third main electrode extending in the row direction, a fourth main electrode extending in the column direction, and a third branch electrode. The third main electrode and the fourth main electrode are cross-connected to form a cross electrode. The third branch electrode is disposed within the border electrode and connected to the cross electrode. The first branch electrode and the second branch electrode are spaced apart from the cross electrode. The third branch electrode is spaced apart from the border electrode. The first branch electrode and the second branch electrode are respectively disposed on both sides of the column direction of all the third branch electrodes. The first branch electrode, the second branch electrode, and the third branch electrode are respectively disposed on both sides of the row direction of the fourth main electrode.
[0009] Optionally, the driving circuit layer includes a pixel driving circuit located on one side of the frame electrode column direction. The pixel driving circuit includes at least a first transistor and a second transistor. The first transistor is connected to the frame electrode, and the second transistor is connected to the cross electrode. The voltage of the frame electrode is different from the voltage of the cross electrode.
[0010] The first branch electrode is located on the side of the frame electrode closer to the pixel driving circuit, and the second branch electrode is located on the side of the frame electrode away from the pixel driving circuit. The first main electrode close to the pixel driving circuit includes a disconnection region, and the fourth main electrode passes through the disconnection region and is connected to the second transistor.
[0011] Optionally, in the column direction, the distance between the fourth main electrode and the second branch electrode is D1, and the distance between adjacent second branch electrodes and the third branch electrode is D2, where D1 < D2.
[0012] Optionally, the third branch electrode near the second branch electrode is connected to the end of the fourth main electrode near the second branch electrode.
[0013] Optionally, in the row direction, the width of the portion of the fourth main electrode passing through the region where the first branch electrode is located is H1, and the width of the remaining portion of the fourth main electrode is H2, where H1 < H2.
[0014] Optionally, in the row direction, the width of the break zone is greater than the distance between adjacent first branch electrodes.
[0015] Optionally, the end of the first branch electrode, which is away from the second branch electrode, is connected to the disconnected region of the first main electrode.
[0016] Optionally, the driving circuit layer further includes scan lines, data lines, and shared discharge lines. The scan lines extend along the row direction, and the data lines and shared discharge lines extend along the column direction. The gate of the first transistor is connected to the scan line, the source of the first transistor is connected to the data line, and the drain of the first transistor is connected to the border electrode. The gate of the second transistor is connected to the scan line, the source of the second transistor is connected to the data line, and the drain of the second transistor is connected to the cross electrode. The pixel driving circuit further includes a third transistor. The gate of the third transistor is connected to the scan line, the source of the third transistor is connected to the cross electrode, and the drain of the third transistor is connected to the shared discharge line. The shared discharge line includes a first connecting segment and a second connecting segment. The orthographic projection of the first connecting segment on the first substrate is located within the orthographic projection of the fourth main electrode on the first substrate. The second connecting segment is located on one side of the border electrode and is connected to the first connecting segment and the drain of the third transistor.
[0017] Optionally, the shared discharge line and the data line are arranged on the same layer. The shared discharge line is made of a non-transparent conductor material. In the row direction, the width of the portion of the fourth main electrode passing through the area where the first branch electrode is located is H1, the width of the remaining portion of the fourth main electrode is H2, and the width of the shared discharge line is H3, where H3 ≤ H1 < H2; or
[0018] The shared discharge line is made of a light-transmitting conductor material.
[0019] This application also provides a display device, including:
[0020] Backlight module;
[0021] The display panel is located on the light-emitting side of the backlight module.
[0022] The display panel and display device disclosed in this application have the following beneficial effects:
[0023] In this application, the display panel includes a driving circuit layer and an electrode layer sequentially formed on a first substrate. The electrode layer includes main pixel electrodes and sub-pixel electrodes. The main pixel electrodes include a first main electrode, a second main electrode, a first branch electrode, and a second branch electrode. The first and second main electrodes form a frame electrode. The first and second branch electrodes are both connected to the frame electrode. The sub-pixel electrodes include a third main electrode, a fourth main electrode, and a third branch electrode. The third and fourth main electrodes are cross-connected to form a cross electrode. The third branch electrode is connected to the cross electrode. The first and second branch electrodes are respectively disposed on both sides of the entire column direction of the third branch electrodes. The main pixel electrodes and sub-pixel electrodes are independent of each other and partially surround the sub-pixel electrodes. While achieving 8-domain display, the transmittance of the pixel unit is improved. This avoids the non-display light-transmitting area between the main pixel electrodes and sub-pixel electrodes, which would affect the effect of improving viewing angle and color shift in 8-domain display.
[0024] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.
[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description
[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.
[0027] Figure 1 This is a schematic diagram of the display panel structure in Embodiment 1 of this application.
[0028] Figure 2 This is a circuit diagram of the pixel unit in Embodiment 1 of this application.
[0029] Figure 3 This is a schematic diagram of the structure of a pixel unit in Embodiment 1 of this application.
[0030] Figure 4 This is a schematic diagram of the dark pattern where branch electrodes are alternately arranged in Embodiment 1 of this application.
[0031] Figure 5 This is a schematic diagram of the dark pattern where the branch electrodes are respectively concentrated in Embodiment 1 of this application.
[0032] Figure 6 This is a schematic diagram showing the transmittance of different branch electrode configurations in Embodiment 1 of this application.
[0033] Figure 7 This is a schematic diagram of the pixel unit structure in Embodiment 2 of this application.
[0034] Figure 8 This is a schematic diagram of the display device in Embodiment 3 of this application.
[0035] Explanation of reference numerals in the attached figures:
[0036] 100. Array substrate; 101. First transistor; 102. Second transistor; 103. Third transistor; 104. Via;
[0037] 110. First substrate; 121. Main pixel electrode; 1211. First main electrode; 1212. Second main electrode; 1213. First branch electrode; 1214. Second branch electrode; 122. Sub-pixel electrode; 1221. Third main electrode; 1222. Fourth main electrode; 1223. Third branch electrode; 130. Gate insulating layer; 140. Passivation layer; 151. Scan line; 152. Gate; 153. Common line; 161. Data line; 162. Source; 163. Drain; 164. Shared discharge line; 1641. First connection segment; 1642. Second connection segment;
[0038] 200. Liquid crystal layer;
[0039] 300, Opposite substrate; 310, Second substrate; 320, Common electrode.
[0040] 10. Display panel; 20. Backlight module. Detailed Implementation
[0041] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.
[0042] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.
[0043] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.
[0044] Example 1
[0045] See Figures 1 to 3 As shown, in this embodiment, the display panel 10 includes an array substrate 100, a liquid crystal layer 200, and a counter substrate 300, with the liquid crystal layer 200 disposed between the array substrate 100 and the counter substrate 300. The array substrate 100 includes a first substrate 110, a driving circuit layer, and an electrode layer, which are sequentially formed on the first substrate 110. The electrode layer includes a main pixel electrode 121 and a secondary pixel electrode 122. The display panel 10 includes a plurality of pixel units arrayed along the row and column directions, each pixel unit including a main pixel electrode 121 and a secondary pixel electrode 122. The pixel unit also includes a pixel driving circuit, with the main pixel electrode 121 and the secondary pixel electrode 122 disposed on the same side of the pixel driving circuit.
[0046] The main pixel electrode 121 includes a first main electrode 1211 extending in the row direction, a second main electrode 1212 extending in the column direction, a first branch electrode 1213, and a second branch electrode 1214. The two first main electrodes 1211 are spaced apart, and the two second main electrodes 1212 are also spaced apart. The first main electrodes 1211 and the second main electrodes 1212 are connected to form a border electrode, which is a rectangular frame. The first branch electrode 1213 and the second branch electrode 1214 are both disposed within the border electrode and are both connected to it.
[0047] The sub-pixel electrode 122 includes a third main electrode 1221 extending in the row direction, a fourth main electrode 1222 extending in the column direction, and a third branch electrode 1223. The third main electrode 1221 and the fourth main electrode 1222 are cross-connected to form a cross electrode, which is at least partially disposed within the border electrode. The third branch electrode 1223 is disposed within the border electrode and connected to the cross electrode. That is, the main pixel electrode 121 partially surrounds the sub-pixel electrode 122. The first branch electrode 1213 and the second branch electrode 1214 are spaced apart from the cross electrode, and the third branch electrode 1223 is spaced apart from the border electrode. In other words, the main pixel electrode 121 and the sub-pixel electrode 122 are independent of each other and are not connected together; the voltages applied to the main pixel electrode 121 and the sub-pixel electrode 122 can be different.
[0048] The branch electrodes of the main pixel electrode 121 and the branch electrodes of the sub-pixel electrode 122 can be respectively centrally arranged. That is, multiple third branch electrodes 1223 are respectively arranged on both sides of the third main electrode 1221 in the column direction, and the first branch electrode 1213 and the second branch electrode 1214 are respectively arranged on both sides of all the third branch electrodes 1223 in the column direction. Multiple first branch electrodes 1213, multiple second branch electrodes 1214 and multiple third branch electrodes 1223 are respectively arranged on both sides of the fourth main electrode 1222 in the row direction. That is to say, the cross electrode is located within the frame electrode, dividing the area surrounded by the frame electrode into four pixel electrode partitions. One of the first branch electrode 1213 and the second branch electrode 1214 and the third branch electrode 1223 are arranged in each pixel electrode partition. The first branch electrode 1213, the second branch electrode 1214 and the third branch electrode 1223 all form a certain angle with the horizontal direction or the vertical direction, forming a pixel electrode structure arranged in a "rice" shape. For example, the angles between the first branch electrode 1213, the second branch electrode 1214 and the third branch electrode 1223 and the horizontal direction or the vertical direction are all 45°. On both sides of the third main electrode 1221 and the fourth main electrode 1222, the branch electrodes are symmetrically arranged.
[0049] In each pixel electrode partition, the distances between adjacent branch electrodes can be equal or different. For example, the distances between adjacent branch electrodes are equal, that is, the distances between adjacent first branch electrodes 1213 (or second branch electrodes 1214), the distances between adjacent third branch electrodes 1223, and the distances between adjacent first branch electrodes 1213 (or second branch electrodes 1214) and third branch electrodes 1223 are all equal. In each pixel electrode partition, the ratio of the number of branch electrodes of the main pixel electrode 121 to the number of branch electrodes of the sub-pixel electrode 122 ranges from 1:1 to 1:5. For example, the ratio of the number of branch electrodes of the main pixel electrode 121 to the number of branch electrodes of the sub-pixel electrode 122 is 3:4.
[0050] Since the main pixel electrode 121 and the sub-pixel electrode 122 are independent of each other, the voltages applied to the main pixel electrode 121 and the sub-pixel electrode 122 can be different. In the same pixel electrode partition, the main pixel electrode 121 and the sub-pixel electrode 122 drive the liquid crystal molecules to form different polar angles. That is, 2 kinds of liquid crystal drive arrangements can be presented in the same partition. The four pixel electrode partitions combined can achieve 8-domain display, thereby improving the viewing angle and color shift of the display panel 10.
[0051] In some technical solutions, the main pixel electrode 121 and the sub-pixel electrode 122 are respectively arranged on both sides of the pixel driving circuit. The area occupied by the pixel driving circuit in the middle of the main pixel electrode 121 and the sub-pixel electrode 122 is very large. This part is a non-display light-transmitting area, which greatly reduces the transmittance of the pixel unit and affects the effect of improving the viewing angle and color shift of the 8-domain display.
[0052] In this embodiment, the display panel 10 includes a driving circuit layer and an electrode layer sequentially formed on a first substrate 110. The electrode layer includes a main pixel electrode 121 and a secondary pixel electrode 122. The main pixel electrode 121 includes a first main electrode 1211, a second main electrode 1212, a first branch electrode 1213, and a second branch electrode 1214. The first main electrode 1211 and the second main electrode 1212 form a frame electrode. The first branch electrode 1213 and the second branch electrode 1214 are both connected to the frame electrode. The secondary pixel electrode 122 includes a third main electrode 1221, a fourth main electrode 1222, and a third branch electrode 1223. The third main electrode 1221 and the fourth main electrode 1222 are cross-connected to form a cross electrode. The third branch electrode 1223 is connected to the cross electrode. The first branch electrode 1213 and the second branch electrode 1214 are respectively disposed on both sides of the column direction of all the third branch electrodes 1223. The main pixel electrode 121 and the sub-pixel electrode 122 are independent of each other and partially surround the sub-pixel electrode 122. While realizing 8-domain display, the transmittance of the pixel unit is improved. This avoids the non-display light-transmitting area between the main pixel electrode 121 and the sub-pixel electrode 122, which would affect the effect of improving the viewing angle and color shift of 8-domain display.
[0053] Furthermore, if one of the main pixel electrode 121 or the secondary pixel electrode 122 breaks due to foreign matter or other reasons during the manufacturing process, the unbroken one of the main pixel electrode 121 or the secondary pixel electrode 122 can still be displayed normally, thereby reducing the panel yield loss caused by pixel electrode breakage.
[0054] It should be noted that the branch electrodes of the main pixel electrode 121 and the branch electrodes of the secondary pixel electrode 122 can be arranged separately and centrally, that is, the first branch electrode 1213 and the second branch electrode 1214 can be arranged on both sides of the entire column direction of the third branch electrodes 1223, but this is not limited to this. The branch electrodes of the main pixel electrode 121 and the branch electrodes of the secondary pixel electrode 122 can also be arranged alternately, that is, the first branch electrode 1213 (or the second branch electrode 1214) and the third branch electrode 1223 can be arranged alternately, depending on the situation. The first branch electrode 1213 and the second branch electrode 1214 can be arranged on both sides of the entire column direction of the third branch electrodes 1223, but this is not limited to this. The positions of the first branch electrode 1213, the second branch electrode 1214 and the third branch electrode 1223 can also be interchanged, depending on the situation.
[0055] See Figure 4 and Figure 5As shown, when the branch electrodes of the main pixel electrode 121 and the branch electrodes of the secondary pixel electrode 122 are alternately arranged, more dark lines are generated in the area around the main electrode; when the branch electrodes of the main pixel electrode 121 and the branch electrodes of the secondary pixel electrode 122 are respectively concentrated, fewer dark lines are generated in the area around the main electrode. See Figure 6 As shown, when the branch electrodes of the main pixel electrode 121 and the branch electrodes of the secondary pixel electrode 122 are alternately arranged, the transmittance of the pixel unit is relatively lower; when the branch electrodes of the main pixel electrode 121 and the branch electrodes of the secondary pixel electrode 122 are respectively concentrated, the transmittance of the pixel unit is relatively higher.
[0056] Therefore, by centrally setting the branch electrodes of the main pixel electrode 121 and the branch electrodes of the secondary pixel electrode 122 respectively, the display effect of the display panel 10 can be improved.
[0057] In some embodiments, the driving circuit layer includes a pixel driving circuit located on one side of the frame electrode column direction. The pixel driving circuit includes at least a first transistor 101 and a second transistor 102. The first transistor 101 is connected to the frame electrode, and the second transistor 102 is connected to the cross electrode. The voltage of the frame electrode is different from the voltage of the cross electrode.
[0058] The first branch electrode 1213 is located on the side of the frame electrode closer to the pixel driving circuit, and the second branch electrode 1214 is located on the side of the frame electrode away from the pixel driving circuit. The first main electrode 1211, which is close to the pixel driving circuit, includes a disconnection region, and the fourth main electrode 1222 passes through the disconnection region and is connected to the second transistor 102.
[0059] The first main electrode 1211 includes a disconnection area, and the fourth main electrode 1222 passes through the disconnection area and is connected to the second transistor 102. On the one hand, this makes it easier to make the main pixel electrode 121 and the sub-pixel electrode 122 independent of each other, and on the other hand, it can reduce dark lines near the disconnection area, thereby improving the display effect of the display panel 10.
[0060] In some embodiments, in the row direction, the width of the break zone is greater than the distance between adjacent first branch electrodes 1213. The fourth main electrode 1222 may be disposed in the middle of the break zone, and the distance from the fourth main electrode 1222 to the first main electrodes 1211 on both sides of the row direction is equal.
[0061] In the row direction, the width of the break area is greater than the distance between adjacent first branch electrodes 1213, which can prevent the frame electrode from contacting the cross electrode.
[0062] In some embodiments, the first branch electrode 1213, which is away from the second branch electrode 1214, is connected to the end of the disconnected region of the first main electrode 1211.
[0063] See Figure 5 As shown, dark lines are concentrated in the area around the main electrode. The first branch electrode 1213, which is far from the second branch electrode 1214, is connected to the end of the disconnected area of the first main electrode 1211. That is, the width of the disconnected area in the row direction is as large as possible. This design can reduce the dark lines in the area around the first main electrode 1211 near the pixel driving circuit, thereby improving the display effect of the display panel 10.
[0064] In some embodiments, the driving circuit layer includes a first metal layer, a gate insulating layer 130, an active layer, a second metal layer, and a passivation layer 140 formed sequentially. The first metal layer includes a scan line 151, a gate 152, and a common line 153, which extend along the row direction. The second metal layer includes a data line 161, a source 162, and a drain 163. The driving circuit layer also includes a shared discharge line 164, which is disposed between adjacent data lines 161, and the data lines 161 and the shared discharge line 164 extend along the column direction. The shared discharge line 164 may be made of the same or different material as the data lines 161. When the shared discharge line 164 and the data lines 161 are made of the same material, the shared discharge line 164 and the data lines 161 may be disposed on the same layer.
[0065] The pixel driving circuit also includes a third transistor 103. The first transistor 101, second transistor 102, and third transistor 103 each include a gate 152, a source 162, an active layer, and a drain 163. The gate 152 of the first transistor 101 is connected to the scan line 151, the source 162 of the first transistor 101 is connected to the data line 161, and the drain 163 of the first transistor 101 is connected to the edge electrode. The gate 152 of the second transistor 102 is connected to the scan line 151, the source 162 of the second transistor 102 is connected to the data line 161, and the drain 163 of the second transistor 102 is connected to the cross electrode. The gate 152 of the third transistor 103 is connected to the scan line 151, the source 162 of the third transistor 103 is connected to the cross electrode, and the drain 163 of the third transistor 103 is connected to the shared discharge line 164. The cross electrode is connected to the drain 163 of the second transistor 102 and the source 162 of the third transistor 103 through a via 104, which is located on one side of the frame electrode.
[0066] The opposing substrate 300 includes a second substrate 310 and a common electrode 320 disposed on the side of the second substrate 310 near the liquid crystal layer 200. A common line 153 is disposed opposite to the main pixel electrode 121 and the secondary pixel electrode 122 in the thickness direction of the display panel 10 to form a storage capacitor. The common electrode 320 is located on opposite sides of the liquid crystal layer 200 with respect to the main pixel electrode 121 and the secondary pixel electrode 122 to form a liquid crystal capacitor. A pixel unit includes a main sub-pixel and a secondary sub-pixel. The main sub-pixel includes a first transistor 101 and a main pixel electrode 121, and the secondary sub-pixel includes a second transistor 102, a third transistor 103, and a secondary pixel electrode 122.
[0067] When the display panel 10 is working, the scan line 151 signal turns on the first transistor 101, the second transistor 102, and the third transistor 103, and the data voltage of the data line 161 is written to the main pixel electrode 121 and the secondary pixel electrode 122. Because the third transistor 103 is turned on, part of the charge of the secondary pixel electrode 122 is released to the shared discharge line 164 through the third transistor 103. The voltage of the secondary pixel electrode 122 is less than the voltage of the main pixel electrode 121, thereby enabling 8-domain display.
[0068] By releasing a portion of the charge on the sub-pixel electrode 122 to the shared discharge line 164 through the third transistor 103, the voltage of the sub-pixel electrode 122 is made less than the voltage of the main pixel electrode 121. This design simplifies the pixel driving circuit structure for 8-domain display.
[0069] It should be noted that a portion of the charge on the sub-pixel electrode 122 can be released to the shared discharge line 164 through the third transistor 103, but it is not limited to this. A portion of the charge on the sub-pixel electrode 122 can also be released to the common line 153 through the third transistor 103, depending on the specific circumstances.
[0070] In some embodiments, the shared discharge line 164 includes a first connecting segment 1641 and a second connecting segment 1642. The orthographic projection of the first connecting segment 1641 on the first substrate 110 lies within the orthographic projection of the fourth main electrode 1222 on the first substrate 110. The second connecting segment 1642 is located on one side of the edge electrode and is connected to the first connecting segment 1641 and the drain 163 of the third transistor 103. In the row direction, the area where the pixel driving circuit is located overlaps with the area where the first connecting segment 1641 is located. The second connecting segment 1642 surrounds the pixel driving circuit on three sides and connects to the adjacent first connecting segment 1641.
[0071] The shared discharge line 164 is disposed between adjacent data lines 161. The second connecting segment 1642 of the shared discharge line 164 is located in the non-display area on one side of the frame electrode. The first connecting segment 1641 of the shared discharge line 164 is located below the fourth main electrode 1222. The shared discharge line 164 does not occupy the design space of the pixel electrode and pixel driving circuit of the display panel 10, which is beneficial to improving the pixel aperture ratio.
[0072] Example 2
[0073] The difference between Example 2 and Example 1 is that the fourth main electrode 1222 is different.
[0074] See Figure 7 As shown, in the column direction, the distance between the fourth main electrode 1222 and the second branch electrode 1214 is D1, and the distance between the adjacent second branch electrode 1214 and the third branch electrode 1223 is D2, where D1 < D2. That is to say, the fourth main electrode 1222 does not extend into the region where the second branch electrode 1214 is located.
[0075] The fourth main electrode 1222 does not extend to the area where the second branch electrode 1214 is located. On the one hand, this avoids the fourth main electrode 1222 from connecting with the second branch electrode 1214. On the other hand, it reduces the dark lines in the area between adjacent second branch electrodes 1214 in the row direction, thereby improving the display effect of the display panel 10.
[0076] In some embodiments, the third branch electrode 1223 near the second branch electrode 1214 is connected to the end of the fourth main electrode 1222 near the second branch electrode 1214. That is, the fourth main electrode 1222 does not extend beyond the connection end between the third branch electrode 1223 and the fourth main electrode 1222 near the second branch electrode 1214.
[0077] The third branch electrode 1223, which is close to the second branch electrode 1214, is connected to the end of the fourth main electrode 1222 that is close to the second branch electrode 1214. That is, the fourth main electrode 1222 is shortened as much as possible to reduce the dark lines in the area between adjacent second branch electrodes 1214 in the row direction, thereby improving the display effect of the display panel 10.
[0078] See Figure 7 As shown, in the row direction, the width of the portion of the fourth main electrode 1222 that passes through the region where the first branch electrode 1213 is located is H1, and the width of the remaining portion of the fourth main electrode 1222 is H2, where H1 < H2. For example, H1 = (40% ~ 60%) × H2.
[0079] See Figure 5As shown, the dark lines are concentrated in the area around the main electrode. By reducing the width of the portion of the fourth main electrode 1222 that passes through the area where the first branch electrode 1213 is located, the dark lines in the area between adjacent first branch electrodes 1213 in the row direction can be reduced, thereby improving the display effect of the display panel 10.
[0080] In some embodiments, the shared discharge line 164 and the data line 161 are arranged on the same layer. The shared discharge line 164 is made of a non-transparent conductor material, such as metals like copper and aluminum. In the row direction, the width of the portion of the fourth main electrode 1222 passing through the area where the first branch electrode 1213 is located is H1, the width of the remaining portion of the fourth main electrode 1222 is H2, and the width of the shared discharge line 164 is H3, where H3 ≤ H1 < H2. That is, the fourth main electrode 1222 can block the portion of the shared discharge line 164 passing through the pixel electrode.
[0081] With the fourth main electrode 1222 blocking the portion of the shared discharge line 164 passing through the pixel electrode, the width H1 of the portion of the fourth main electrode 1222 passing through the area where the first branch electrode 1213 is located is minimized as much as possible. This can reduce dark lines in the area between adjacent first branch electrodes 1213 in the row direction, thereby improving the display effect of the display panel 10.
[0082] It should be noted that the material used to make the shared discharge line 164 can be a non-transparent conductor material, but it is not limited to this. The material used to make the shared discharge line 164 can also be a transparent conductor material, depending on the specific circumstances.
[0083] In other embodiments, the portion of the shared discharge line 164 passing through the pixel electrode may also be located below the second main electrode 1212. The cross electrode is connected to the drain 163 of the second transistor 102 and the source 162 of the third transistor 103 through a via 104. The via 104 may be located at the intersection of the third main electrode 1221 and the fourth main electrode 1222. With this design, the portion of the fourth main electrode 1222 passing through the first branch electrode 1213 can be removed, that is, the fourth main electrode 1222 can be symmetrically arranged relative to the third main electrode 1221. The third branch electrode 1223 near the second branch electrode 1214 is connected to the end of the fourth main electrode 1222 near the second branch electrode 1214, and the third branch electrode 1223 near the first branch electrode 1213 is connected to the end of the fourth main electrode 1222 near the second branch electrode 1214.
[0084] The portion of the fourth main electrode 1222 that passes through the first branch electrode 1213 can be removed, which can reduce the dark lines in the area between adjacent first branch electrodes 1213 in the row direction, thereby improving the display effect of the display panel 10.
[0085] Example 3
[0086] See Figure 8 The display device includes a display panel 10 and a backlight module 20, with the display panel 10 disposed on the light-emitting side of the backlight module 20. The display panel 10 includes the display panel 10 disclosed in Embodiment 1 and Embodiment 2.
[0087] In this embodiment, the display device includes a display panel 10. The display panel 10 includes a driving circuit layer and an electrode layer sequentially formed on a first substrate 110. The electrode layer includes a main pixel electrode 121 and a secondary pixel electrode 122. The main pixel electrode 121 includes a border electrode, a first branch electrode 1213, and a second branch electrode 1214. The first branch electrode 1213 and the second branch electrode 1214 are connected to the border electrode. The secondary pixel electrode 122 includes a cross electrode and a third branch electrode 1223. The third branch electrode 1223 is connected to the cross electrode. The first branch electrode 1213 and the second branch electrode 1214 are respectively disposed on both sides of the column direction of all the third branch electrodes 1223. The main pixel electrode 121 and the secondary pixel electrode 122 are independent of each other and partially surround the secondary pixel electrode 122. While realizing 8-domain display, the transmittance of the pixel unit is improved, and the non-display light-transmitting area between the main pixel electrode 121 and the secondary pixel electrode 122 can be avoided, which would affect the effect of improving the viewing angle and color shift of 8-domain display.
[0088] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0089] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0090] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0091] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.
Claims
1. A display panel, comprising a first substrate, a driving circuit layer, and an electrode layer, wherein the driving circuit layer and the electrode layer are sequentially formed on the first substrate, characterized in that, The electrode layer includes: The main pixel electrode includes a first main electrode extending in the row direction, a second main electrode extending in the column direction, a first branch electrode, and a second branch electrode. The two first main electrodes are spaced apart and the two second main electrodes are spaced apart. The first main electrodes and the second main electrodes are connected to form a border electrode. The first branch electrode and the second branch electrode are disposed within the border electrode and connected to the border electrode. The sub-pixel electrode includes a third main electrode extending in the row direction, a fourth main electrode extending in the column direction, and a third branch electrode. The third main electrode and the fourth main electrode are cross-connected to form a cross electrode. The third branch electrode is disposed within the border electrode and connected to the cross electrode. The first branch electrode and the second branch electrode are spaced apart from the cross electrode. The third branch electrode is spaced apart from the border electrode. The first branch electrode and the second branch electrode are respectively disposed on both sides of the column direction of all the third branch electrodes. The first branch electrode, the second branch electrode, and the third branch electrode are respectively disposed on both sides of the row direction of the fourth main electrode.
2. The display panel according to claim 1, characterized in that, The driving circuit layer includes a pixel driving circuit located on one side of the frame electrode column direction. The pixel driving circuit includes at least a first transistor and a second transistor. The first transistor is connected to the frame electrode, and the second transistor is connected to the cross electrode. The voltage of the frame electrode is different from the voltage of the cross electrode. The first branch electrode is located on the side of the frame electrode closer to the pixel driving circuit, and the second branch electrode is located on the side of the frame electrode away from the pixel driving circuit. The first main electrode close to the pixel driving circuit includes a disconnection region, and the fourth main electrode passes through the disconnection region and is connected to the second transistor.
3. The display panel according to claim 2, characterized in that, In the column direction, the distance between the fourth main electrode and the second branch electrode is D1, and the distance between adjacent second branch electrodes and the third branch electrode is D2, where D1 < D2.
4. The display panel according to claim 3, characterized in that, The third branch electrode, which is close to the second branch electrode, is connected to the end of the fourth main electrode that is close to the second branch electrode.
5. The display panel according to claim 2, characterized in that, In the row direction, the width of the portion of the fourth main electrode passing through the region where the first branch electrode is located is H1, and the width of the remaining portion of the fourth main electrode is H2, where H1 < H2.
6. The display panel according to claim 2, characterized in that, In the row direction, the width of the break zone is greater than the distance between adjacent first branch electrodes.
7. The display panel according to claim 6, characterized in that, The first branch electrode, which is far from the second branch electrode, is connected to the end of the disconnected region of the first main electrode.
8. The display panel according to claim 2, characterized in that, The driving circuit layer further includes scan lines, data lines, and shared discharge lines. The scan lines extend along the row direction, and the data lines and shared discharge lines extend along the column direction. The gate of the first transistor is connected to the scan line, the source of the first transistor is connected to the data line, and the drain of the first transistor is connected to the border electrode. The gate of the second transistor is connected to the scan line, the source of the second transistor is connected to the data line, and the drain of the second transistor is connected to the cross electrode. The pixel driving circuit further includes a third transistor. The gate of the third transistor is connected to the scan line, the source of the third transistor is connected to the cross electrode, and the drain of the third transistor is connected to the shared discharge line. The shared discharge line includes a first connecting segment and a second connecting segment. The orthographic projection of the first connecting segment on the first substrate is located within the orthographic projection of the fourth main electrode on the first substrate. The second connecting segment is located on one side of the border electrode and is connected to the first connecting segment and the drain of the third transistor.
9. The display panel according to claim 8, characterized in that, The shared discharge line and the data line are arranged on the same layer. The shared discharge line is made of a non-transparent conductor material. In the row direction, the width of the portion of the fourth main electrode passing through the area where the first branch electrode is located is H1, the width of the remaining portion of the fourth main electrode is H2, and the width of the shared discharge line is H3, where H3 ≤ H1 < H2; or The shared discharge line is made of a light-transmitting conductor material.
10. A display device, characterized in that, include: Backlight module; The display panel as described in any one of claims 1 to 9 is disposed on the light-emitting side of the backlight module.