Display panel and electronic apparatus

Abstract

Provided in the present application are a display panel and an electronic apparatus. The display panel comprises a plurality of sub-pixels, wherein a pixel electrode of each sub-pixel has a plurality of display domains, and a first auxiliary electrode is arranged corresponding to some regions in at least one of the plurality of display domains, such that the degree of liquid crystal molecular alignment of the regions on the pixel electrode which correspond to the first auxiliary electrode is different from that of the regions on the pixel electrode which do not correspond the first auxiliary electrode, thereby alleviating the problem of an existing thin-film transistor liquid crystal display panel having a poor angle of view.

Description

Display panel and electronic device Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and an electronic device. Background Art

[0002] With the development of display technology, Thin Film Transistor Liquid Crystal Display (TFT-LCD) panels have achieved major breakthroughs in key technologies such as large size, curved surface, and ultra-high resolution. However, TFT-LCD panels still have the problem of poor viewing angle. SUMMARY OF THE INVENTION

[0003] The present application provides a display panel and an electronic device to alleviate the technical problem of poor viewing angle of existing thin film transistor liquid crystal display panels.

[0004] To solve the above problems, the technical solutions provided by this application are as follows:

[0005] An embodiment of the present application provides a display panel comprising a substrate and a plurality of sub-pixels arranged in an array on the substrate, each of the sub-pixels comprising:

[0006] a pixel electrode having a plurality of display domains; and

[0007] a first auxiliary electrode, the first auxiliary electrode being located between the pixel electrode and the substrate and being provided corresponding to a partial area of ​​at least one of the plurality of display domains;

[0008] The pixel electrode is electrically connected to a first signal line, the first auxiliary electrode is electrically connected to a second signal line, the first signal line and the second signal line are electrically isolated and used to transmit different electrical signals.

[0009] In the display panel provided in the embodiment of the present application, each of the sub-pixels further includes a second auxiliary electrode, the second auxiliary electrode being located between the pixel electrode and the substrate and being provided corresponding to a partial area of ​​at least one of the plurality of display domains, and an orthographic projection of the second auxiliary electrode on the substrate being separated from an orthographic projection of the first auxiliary electrode on the substrate;

[0010] The second auxiliary electrode is electrically connected to a third signal line, the third signal line is electrically isolated from the first signal line and the second signal line, the third signal line and the second signal line are used to transmit different electrical signals, and the third signal line and the first signal line are also used to transmit different electrical signals.

[0011] In the display panel provided in the embodiment of the present application, the display panel further includes a color filter layer, the color filter layer is located between the first auxiliary electrode and the substrate, and the first auxiliary electrode and the second auxiliary electrode are provided in the same layer.

[0012] In the display panel provided in an embodiment of the present application, the display panel includes a plurality of gate scan lines extending along a first direction and data lines extending along a second direction, the gate scan lines and the data lines intersecting to define a plurality of pixel areas, each of the pixel areas being provided with one sub-pixel, and the first signal line being electrically connected to the data line;

[0013] The pixel electrode includes a first main electrode extending along the first direction and a second main electrode extending along the second direction, the first main electrode and the second main electrode divide the pixel electrode into four display domains; the first auxiliary electrode overlaps with a portion of each of the four display domains, and the second auxiliary electrode overlaps with another portion of each of the four display domains.

[0014] In the display panel provided by the embodiment of the present application, a first center line of the first auxiliary electrode in the first direction coincides with the first main electrode, and a second center line of the first auxiliary electrode in the second direction coincides with the second main electrode.

[0015] In the display panel provided in the embodiment of the present application, the second auxiliary electrode includes a first sub-electrode located on one side of the first auxiliary electrode and a second sub-electrode located on a side of the first auxiliary electrode away from the first sub-electrode, the first sub-electrode overlaps with the other partial areas of two of the four display domains, and the second sub-electrode overlaps with the other partial areas of the other two of the four display domains.

[0016] In the display panel provided by the embodiment of the present application, the first sub-electrode half surrounds the first auxiliary electrode, the second sub-electrode also half surrounds the first auxiliary electrode, and the first sub-electrode and the second sub-electrode are both electrically connected to the third signal line.

[0017] In the display panel provided in the embodiment of the present application, the display panel further includes a first light-shielding electrode arranged corresponding to the data line, and in the first direction, the width of the first light-shielding electrode is greater than or equal to the width of the data line.

[0018] In the display panel provided by the embodiment of the present application, the first sub-electrode or the second sub-electrode extends from a side away from the first auxiliary electrode toward a direction close to the data line to form the first light-shielding electrode.

[0019] In the display panel provided by the embodiment of the present application, in the first direction, the first sub-electrode is connected to the second sub-electrode in the adjacent sub-pixel.

[0020] In the display panel provided in the embodiment of the present application, the first light-shielding electrode is located between two adjacent sub-pixels, and the first sub-electrode is connected to the second sub-electrode in the adjacent sub-pixel through the first light-shielding electrode.

[0021] In the display panel provided in the embodiment of the present application, the display panel also includes a second common electrode arranged in the same layer as the gate scan line, and the display panel also includes a second light-shielding electrode arranged corresponding to the second common electrode. In the second direction, the width of the second light-shielding electrode is greater than or equal to the width of the second common electrode.

[0022] In the display panel provided by the embodiment of the present application, the first sub-electrode and / or the second sub-electrode extends toward the second common electrode of the adjacent sub-pixel to form the second light-shielding electrode.

[0023] In the display panel provided in an embodiment of the present application, the display panel further includes a first common electrode located on a side of the pixel electrode away from the substrate, and the difference between the voltage on the second auxiliary electrode and the voltage on the first common electrode is greater than or equal to -2V and less than or equal to 2V.

[0024] In the display panel provided in the embodiment of the present application, the display panel further includes a third light-shielding electrode arranged corresponding to the gate scan line. In the second direction, the width of the third light-shielding electrode is greater than or equal to the width of the gate scan line.

[0025] In the display panel provided by the embodiment of the present application, the first sub-electrode and / or the second sub-electrode extends in a direction close to the gate scanning line to form the third light-shielding electrode.

[0026] In the display panel provided by the embodiment of the present application, in the second direction, two adjacent first sub-electrodes are electrically connected, two adjacent second sub-electrodes are electrically connected, and two adjacent first auxiliary electrodes are electrically connected.

[0027] In the display panel provided in an embodiment of the present application, the display panel also includes a first connecting line extending along the second direction, and two adjacent first auxiliary electrodes are electrically connected through the first connecting line; within the same sub-pixel, there is a first gap between adjacent first sub-electrodes and second sub-electrodes, and the first connecting line passes through the first gap.

[0028] In the display panel provided in an embodiment of the present application, the display panel further includes a display area and the second signal line and the third signal line located outside the display area, the sub-pixel is located in the display area, the second signal line is located on one side of the display area, and the third signal line is located on a side of the display area away from the second signal line.

[0029] An embodiment of the present application further provides an electronic device, which includes the display panel of one of the aforementioned embodiments. Beneficial effects

[0030] In the display panel and electronic device provided by the present application, the display panel includes a substrate and a plurality of sub-pixels arranged in an array on the substrate, each of the sub-pixels including a pixel electrode and a first auxiliary electrode, the pixel electrode having a plurality of display domains, the first auxiliary electrode being located between the pixel electrode and the substrate and being arranged corresponding to a partial area of ​​at least one of the plurality of display domains, the pixel electrode being electrically connected to a first signal line, the first auxiliary electrode being electrically connected to a second signal line, the first signal line and the second signal line being electrically isolated and used to transmit different electrical signals, so that the voltage on the first auxiliary electrode is different from the voltage on the pixel electrode, so that an electric field is formed between the first auxiliary electrode and the pixel electrode, so that within the same display domain, the liquid crystal molecules in the area corresponding to the first auxiliary electrode and the area not corresponding to the first auxiliary electrode on the pixel electrode have different degrees of inversion, so that each display domain corresponding to the first auxiliary electrode is equivalent to two display domains, thereby increasing the number of display domains of the pixel electrode, and thereby causing the liquid crystal molecules above the pixel electrode to have more inverted states of different degrees, thereby improving the viewing angle of the display panel, thereby solving the problem of poor viewing angle of existing thin-film transistor liquid crystal display panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] FIG1 is a schematic diagram of a top view of the structure of a display panel provided in an embodiment of the present application.

[0033] FIG2 is a schematic diagram of the detailed structure of a sub-pixel in FIG1 .

[0034] FIG. 3 is a detailed schematic diagram of the first auxiliary electrode and the second auxiliary electrode in FIG. 2 .

[0035] FIG4 is a schematic diagram of liquid crystal inversion provided in an embodiment of the present application.

[0036] FIG5 is a schematic diagram showing connections between first auxiliary electrodes and second auxiliary electrodes according to an embodiment of the present application.

[0037] FIG6 is a schematic diagram of a partial film layer structure of a display panel provided in an embodiment of the present application.

[0038] FIG. 7 is a schematic diagram of a top view of the structure of the second auxiliary electrode provided in an embodiment of the present application.

[0039] FIG8 is another schematic top view of the structure of the second auxiliary electrode provided in an embodiment of the present application. Modes for Carrying Out the Invention

[0040] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be implemented in. The directional terms mentioned in this application, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present application, rather than to limit the present application. In the figures, units with similar structures are represented by the same reference numerals. In the accompanying drawings, the thickness of some layers and areas is exaggerated for clarity of understanding and ease of description. That is, the size and thickness of each component shown in the drawings are arbitrarily shown, but the present application is not limited to this.

[0041] Please refer to Figures 1 to 6. Figure 1 is a schematic top view of a display panel according to an embodiment of the present application. Figure 2 is a schematic diagram of the detailed structure of a subpixel in Figure 1. Figure 3 is a schematic diagram of the detailed structure of the first auxiliary electrode and the second auxiliary electrode in Figure 2. Figure 4 is a schematic diagram of the liquid crystal inversion according to an embodiment of the present application. Figure 5 is a schematic diagram of the connection between the first auxiliary electrodes and the second auxiliary electrodes according to an embodiment of the present application. Figure 6 is a schematic diagram of a partial film layer structure of a display panel according to an embodiment of the present application. Referring to Figure 1, the display panel is a liquid crystal display panel. The display panel 100 includes a substrate 10 and a plurality of gate scan lines GL and a plurality of data lines DL arranged on the substrate 10. The plurality of gate scan lines GL extend along a first direction X and are arranged at intervals along a second direction Y. The plurality of data lines DL extend along a second direction Y and are arranged at intervals along the first direction X. The first direction X and the second direction Y are different. For example, the first direction X is the row direction and the second direction Y is the column direction.

[0042] The gate scan lines GL and the data lines DL intersect to define a plurality of pixel regions PD, each of which is provided with a sub-pixel SP. Thus, the display panel 100 includes a plurality of sub-pixels SP arranged in an array on the substrate 10. Each gate scan line GL connects a row of sub-pixels SP, and each data line DL connects a column of sub-pixels SP. Any three adjacent sub-pixels SP constitute a pixel P. Each pixel P includes three sequentially arranged sub-pixels SP. The three sequentially arranged sub-pixels SP have different colors, for example, including a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.

[0043] The structure of the display panel 100 is described in detail below by taking a sub-pixel SP as an example.

[0044] 2 , the sub-pixel SP includes a pixel electrode 20 and a first auxiliary electrode 30 . The pixel electrode 20 has multiple display domains. The first auxiliary electrode 30 is located between the pixel electrode 20 and the substrate 10 and is provided corresponding to a portion of at least one of the multiple display domains. The pixel electrode 20 is electrically connected to a first signal line 201, and the first auxiliary electrode 30 is electrically connected to a second signal line 301 (the second signal line 301 can be referred to in FIG5 , and will be described in detail later). The first signal line 201 is electrically connected to the data line DL. Optionally, the first signal line 201 and the data line DL are integrally provided, i.e., the data line DL is the first signal line 201.

[0045] The first signal line 201 and the second signal line 301 are electrically isolated and are used to transmit different electrical signals, so that the voltage on the first auxiliary electrode 30 is different from the voltage on the pixel electrode 20, so that an electric field is formed between the first auxiliary electrode 30 and the pixel electrode 20. In this way, within the same display domain, the liquid crystal molecules in the area corresponding to the first auxiliary electrode 30 and the area not corresponding to the first auxiliary electrode 30 on the pixel electrode 20 have different degrees of inversion, so that each display domain corresponding to the first auxiliary electrode 30 is equivalent to two display domains, increasing the number of display domains of the pixel electrode 20, and thus making the liquid crystal molecules above the pixel electrode 20 have more inverted states of different degrees, thereby improving the viewing angle of the display panel 100, thereby solving the problem of poor viewing angle of existing thin-film transistor liquid crystal display panels.

[0046] In one embodiment, each of the sub-pixels SP further includes a second auxiliary electrode 40, which is located between the pixel electrode 20 and the substrate 10 and is provided corresponding to a partial area of ​​at least one of the plurality of display domains. The orthographic projection of the second auxiliary electrode 40 on the substrate 10 is separated from the orthographic projection of the first auxiliary electrode 30 on the substrate 10. The orthographic projections being separated means that there is no overlapping area between the two orthographic projections and there is a gap between the two orthographic projections. For example, the orthographic projection of the second auxiliary electrode 40 on the substrate 10 is separated from the orthographic projection of the first auxiliary electrode 30 on the substrate 10, which means that there is no overlapping area between the orthographic projection of the second auxiliary electrode 40 on the substrate 10 and the orthographic projection of the first auxiliary electrode 30 on the substrate 10 and there is a gap between the two orthographic projections.

[0047] The second auxiliary electrode 40 is electrically connected to a third signal line 401 (the third signal line 401 can be described in detail in FIG5 ). The third signal line 401 is electrically isolated from the first signal line 201 and the second signal line 301. The third signal line 401 and the second signal line 301 are used to transmit different electrical signals, and the third signal line 401 and the first signal line 201 are also used to transmit different electrical signals, so that the voltage on the second auxiliary electrode 40 is different from the voltage on the pixel electrode 20, and the voltage on the second auxiliary electrode 40 is also different from the voltage on the first auxiliary electrode 30, so as to better control the inversion of the liquid crystal in the area not covered by the first auxiliary electrode 30, further increase the different degrees of inversion of the liquid crystal molecules above the pixel electrode 20, and further improve the viewing angle of the display panel 100.

[0048] Specifically, each sub-pixel SP further includes a transistor T located on a side of the pixel electrode 20 near the gate scan line GL. The transistor T is a thin film transistor. The transistor T includes a gate G, an active layer AS, a source S, and a drain D. The gate G is connected to the gate scan line GL and disposed on the same layer as the gate scan line GL. The source S is connected to the data line DL and disposed on the same layer as the data line DL. The drain D is connected to the pixel electrode 20. The active layer AS is located between the gate G and the source S. The transistor T is used to provide a driving voltage to the pixel electrode 20.

[0049] The pixel electrode 20 includes a first trunk electrode 21 extending along the first direction X and a second trunk electrode 22 extending along the second direction Y. The length of the first trunk electrode 21 is shorter than the length of the second trunk electrode 22. The first trunk electrode 21 and the second trunk electrode 22 divide the pixel electrode 20 into four display domains. The pixel electrode 20 also includes a plurality of branch electrodes 23. The branch electrodes 23 are connected to the first trunk electrode 21 or the second trunk electrode 22 and extend from the first trunk electrode 21 or the second trunk electrode 22 in different directions. The branch electrodes 23 in each display domain extend in the same direction, and the branch electrodes 23 in two adjacent display domains are symmetrical about the first trunk electrode 21 or the second trunk electrode 22.

[0050] The first auxiliary electrode 30 overlaps a portion of each of the four display domains, and the second auxiliary electrode 40 overlaps another portion of each of the four display domains. Specifically, each display domain of the pixel electrode 20 includes a first region and a second adjacent region, the first auxiliary electrode 30 overlaps the first region, and the second auxiliary electrode 40 overlaps the second region. Optionally, the pixel electrodes 20 are each made of a transparent conductive material such as indium tin oxide (ITO). The material of the first auxiliary electrode 30 is the same as that of the pixel electrode 20, and the material of the second auxiliary electrode 40 is also the same as that of the pixel electrode 20.

[0051] Optionally, a first centerline of the first auxiliary electrode 30 in the first direction X coincides with the first main electrode 21, and a second centerline of the first auxiliary electrode 30 in the second direction Y coincides with the second main electrode 22, to form a uniform display domain and further improve the viewing angle. The first centerline and the second centerline both refer to bisectors of the first auxiliary electrode 30, and both the first centerline and the second centerline can divide the first auxiliary electrode 30 into two identical parts.

[0052] 2 and 3 , the second auxiliary electrode 40 includes a first sub-electrode 41 located on one side of the first auxiliary electrode 30 and a second sub-electrode 42 located on a side of the first auxiliary electrode 30 away from the first sub-electrode 41. The first sub-electrode 41 overlaps with the other partial areas of two of the four display domains, and the second sub-electrode 42 overlaps with the other partial areas of the other two of the four display domains.

[0053] The first sub-electrode 41 semi-surrounds the first auxiliary electrode 30 , and the second sub-electrode 42 also semi-surrounds the first auxiliary electrode 30 . The first sub-electrode 41 and the second sub-electrode 42 are both electrically connected to the third signal line 401 so that the voltage on the first sub-electrode 41 is the same as the voltage on the second sub-electrode 42 .

[0054] 4 , the display panel 100 further includes a first common electrode 60 located on a side of the pixel electrode 20 away from the substrate 10. Due to the presence of the first auxiliary electrode 30 and the second auxiliary electrode 40, and the difference in voltage between the first auxiliary electrode 30 and the second auxiliary electrode 40, different electric fields are formed between the first auxiliary electrode 30, the second auxiliary electrode 40, and the pixel electrode 20. Consequently, the inversion of the liquid crystal molecules between the pixel electrode 20 and the first common electrode 60 changes due to the difference in horizontal and vertical electric fields. Consequently, eight regions have different degrees of liquid crystal inversion, transforming four display domains into eight display domains to improve the viewing angle.

[0055] 2 and 5 , in the second direction Y, two adjacent first sub-electrodes 41 are electrically connected, two adjacent second sub-electrodes 42 are electrically connected, and two adjacent first auxiliary electrodes 30 are electrically connected.

[0056] Specifically, the display panel 100 also includes a first connecting line 31 extending along the second direction Y, and the two adjacent first auxiliary electrodes 30 are electrically connected through the first connecting line 31; within the same sub-pixel SP, there is a first gap 410 between the adjacent first sub-electrodes 41 and the second sub-electrodes 42, and the first connecting line 31 passes through the first gap 410.

[0057] Furthermore, the display panel 100 further includes a display area AA, and the second signal line 301 and the third signal line 401 located outside the display area AA. The sub-pixel SP is located within the display area AA, the first auxiliary electrode 30 is electrically connected to the second signal line 301, and the first sub-electrode 41 and the second sub-electrode 42 are both electrically connected to the third signal line 401. Optionally, the second signal line 301 is located on one side of the display area AA, and the third signal line 401 is located on a side of the display area AA away from the second signal line 301.

[0058] In one embodiment, referring to FIG6 , the display panel 100 further includes a color filter layer 11. The color filter layer 11 is located between the first auxiliary electrode 30 and the substrate 10. The first auxiliary electrode 30 and the second auxiliary electrode 40 are provided in the same layer. Specifically, the color filter layer 11 is located on the side of the transistor T away from the substrate 10. The transistor T includes a gate G, an active layer AS, a source S, and a drain D. The gate G is provided on the substrate 10. The source S and the drain D are provided on the active layer AS. The pixel electrode 20 is electrically connected to the drain D. Of course, the display panel 100 further includes a gate insulating layer 12 covering the gate G and the substrate 10, and a passivation layer 13 covering the source S, the drain D, the active layer AS, and the gate insulating layer 12. The color filter layer 11 is provided on the passivation layer 13, and the first auxiliary electrode 30 and the second auxiliary electrode 40 are provided on the color filter layer 11. The display panel 100 further includes an organic planarization layer 14 covering the first auxiliary electrode 30, the second auxiliary electrode 40, and the color filter layer 11. The pixel electrode 20 is disposed on the organic planarization layer 14. The gate insulating layer 12 and the passivation layer 13 are made of inorganic materials such as silicon oxide and silicon nitride.

[0059] Of course, the display panel 100 also includes a backlight module for providing backlight for the display panel. The color filter layer 11 includes a red color filter, a green color filter, and a blue color filter. Light emitted by the backlight module appears red when passing through the red color filter, appears green when passing through the green color filter, and appears blue when passing through the blue color filter, thereby achieving full-color display of the display panel 100.

[0060] It should be noted that "disposed in the same layer" in this application means that during the manufacturing process, a film layer formed of the same material is patterned to obtain at least two different structures, and the at least two different structures are disposed in the same layer. For example, in this embodiment, the first auxiliary electrode 30 and the second auxiliary electrode 40 are obtained by patterning the same conductive film layer, and thus the first auxiliary electrode 30 and the second auxiliary electrode 40 are disposed in the same layer.

[0061] In one embodiment, with continued reference to FIG. 2 , the display panel 100 further includes a first light-shielding electrode 71 disposed corresponding to the data line DL. In the first direction X, the width of the first light-shielding electrode 71 is greater than or equal to the width of the data line DL. Optionally, the first sub-electrode 41 or the second sub-electrode 42 extends from a side away from the first auxiliary electrode 30 toward a direction closer to the data line DL to form the first light-shielding electrode 71 , i.e., a portion of the second auxiliary electrode 40 also serves as the first light-shielding electrode 71 .

[0062] In order to achieve the light-shielding function of the second auxiliary electrode 40, the difference between the voltage on the second auxiliary electrode 40 and the voltage on the first common electrode 60 is greater than or equal to -2V and less than or equal to 2V. In this way, a small voltage difference or no voltage difference is formed between the second auxiliary electrode 40 and the first common electrode 60, so that the liquid crystal molecules corresponding to the data line DL will basically not be deflected, thereby achieving the purpose of light shielding.

[0063] In one embodiment, to reduce the number of connection points between the second auxiliary electrode 40 and the third signal line 401 , the first sub-electrode 41 of the second auxiliary electrode 40 is connected to the second sub-electrode 42 in the adjacent sub-pixel SP through the first light-shielding electrode 71 .

[0064] Specifically, referring to Figures 1 to 7, Figure 7 is a schematic top view of the structure of a second auxiliary electrode provided in an embodiment of the present application. In the first direction X, the first sub-electrode 41 is connected to the second sub-electrode 42 in the adjacent sub-pixel SP via the first light-shielding electrode 71, so that the first sub-electrode 41 and the second sub-electrode 42 are integrally arranged. The portion where the first sub-electrode 41 and the second sub-electrode 42 overlap with the data line DL serves as the first light-shielding electrode 71. This not only shields the data line DL from light, but also saves connecting wires between adjacent first sub-electrodes 41 and adjacent second sub-electrodes 42, and reduces the number of connection points between the second auxiliary electrode 40 and the third signal line 401, thereby reducing the number of input endpoints on the third signal line 401.

[0065] Of course, in another embodiment, in order to prevent the second auxiliary electrode 40 from being reused as the first light-shielding electrode 71, thereby affecting the function of the second auxiliary electrode 40 in better regulating the inversion of the liquid crystal in the area not covered by the first auxiliary electrode 30, the first light-shielding electrode 71 may also be provided separately, for example, the first light-shielding electrode 71 is located between two adjacent sub-pixels SP and covers the data line DL.

[0066] Specifically, referring to Figures 1 to 8, Figure 8 is a schematic top view of another structure of the second auxiliary electrode provided in an embodiment of the present application. In the first direction X, the first sub-electrode 41, the first light-shielding electrode 71, and the second sub-electrode 42 are arranged sequentially in the first direction X. The first light-shielding electrode 71 is located between the first sub-electrode 41 and the second sub-electrode 42, and has a gap between itself and the first sub-electrode 41 and the second sub-electrode 42, so that the first light-shielding electrode 71 is electrically isolated from the first sub-electrode 41 and the second sub-electrode 42.

[0067] In one embodiment, with continued reference to FIG. 2 , the display panel 100 further includes a second common electrode 50 disposed in the same layer as the gate scan line GL. The second common electrode 50 is located between the pixel electrode 20 and the gate scan line GL, and the second common electrode 50 extends along the first direction X. The display panel 100 further includes a second light-shielding electrode 72 disposed corresponding to the second common electrode 50. In the second direction Y, the width of the second light-shielding electrode 72 is greater than or equal to the width of the second common electrode 50. Optionally, the first sub-electrode 41 and / or the second sub-electrode 42 extends toward the second common electrode 50 of the adjacent sub-pixel SP to form the second light-shielding electrode 72. That is, the first sub-electrode 41 and / or the second sub-electrode 42 extends away from the second direction Y to form the second light-shielding electrode 72.

[0068] Similarly, in order to achieve the shading function of the second auxiliary electrode 40, the difference between the voltage on the second auxiliary electrode 40 and the voltage on the first common electrode 60 is greater than or equal to -2V and less than or equal to 2V. In this way, a small voltage difference or no voltage difference is formed between the second auxiliary electrode 40 and the first common electrode 60, so that the liquid crystal molecules corresponding to the second common electrode 50 will basically not be deflected, thereby achieving the purpose of shading.

[0069] In one embodiment, the display panel 100 further includes a third light-shielding electrode (not shown) disposed corresponding to the gate scan line GL. The width of the third light-shielding electrode in the second direction Y is greater than or equal to the width of the gate scan line GL. Optionally, the first sub-electrode 41 and / or the second sub-electrode 42 extends toward the gate scan line GL to form the third light-shielding electrode.

[0070] In this embodiment, the second auxiliary electrode 40 can achieve a light-shielding function while improving the viewing angle, so there is no need to set the second common electrode 50 between the data line DL and the pixel electrode 20 as a light-shielding layer, nor is there a need to set a light-shielding electrode (DBS electrode) on the same layer as the pixel electrode 20 as a light-shielding layer. As a result, the area of ​​the pixel electrode 20 of each sub-pixel SP can be increased, and the aperture ratio of the sub-pixel SP can be improved, thereby improving the transmittance of the display panel 100 and reducing the power consumption of the display panel 100.

[0071] Based on the same inventive concept, an embodiment of the present application further provides an electronic device comprising the display panel of one of the aforementioned embodiments. The electronic device may be a device with a display screen, such as a television, mobile phone, tablet computer, computer monitor, gaming device, or wearable device. The wearable device may be a smart bracelet, smart glasses, smart watch, or smart decoration.

[0072] According to the above embodiments, it can be seen that:

[0073] In a display panel and electronic device provided in an embodiment of the present application, the display panel includes a substrate and a plurality of sub-pixels arranged in an array on the substrate, each of the sub-pixels including a pixel electrode and a first auxiliary electrode, the pixel electrode having a plurality of display domains, the first auxiliary electrode being located between the pixel electrode and the substrate and corresponding to a partial area of ​​at least one of the plurality of display domains, the pixel electrode being electrically connected to a first signal line, the first auxiliary electrode being electrically connected to a second signal line, the first signal line and the second signal line being electrically isolated and configured to transmit different electrical signals, so that a voltage on the first auxiliary electrode is different from a voltage on the pixel electrode, thereby forming an electric field between the first auxiliary electrode and the pixel electrode. In this manner, within the same display domain, the liquid crystal molecules in an area of ​​the pixel electrode corresponding to the first auxiliary electrode and an area not corresponding to the first auxiliary electrode have different degrees of inversion, so that each display domain corresponding to the first auxiliary electrode is equivalent to two display domains, thereby increasing the number of display domains of the pixel electrode and thereby causing the liquid crystal molecules above the pixel electrode to have more inverted states of varying degrees, thereby improving the viewing angle of the display panel and thereby solving the problem of poor viewing angle of existing thin-film transistor liquid crystal display panels.

[0074] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] The above is a detailed introduction to the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel comprising a substrate and a plurality of sub-pixels arranged in an array on the substrate, each of the sub-pixels comprising: A pixel electrode, wherein the pixel electrode has a plurality of display domains; as well as a first auxiliary electrode, the first auxiliary electrode being located between the pixel electrode and the substrate and being disposed corresponding to a partial area of ​​at least one of the plurality of display domains; The pixel electrode is electrically connected to a first signal line, the first auxiliary electrode is electrically connected to a second signal line, the first signal line and the second signal line are electrically isolated and used to transmit different electrical signals.

2. The display panel according to claim 1, wherein: Each of the sub-pixels further includes a second auxiliary electrode, which is located between the pixel electrode and the substrate and is disposed corresponding to a partial area of ​​at least one of the plurality of display domains, and an orthographic projection of the second auxiliary electrode on the substrate is separated from an orthographic projection of the first auxiliary electrode on the substrate; The second auxiliary electrode is electrically connected to a third signal line, the third signal line is electrically isolated from the first signal line and the second signal line, the third signal line and the second signal line are used to transmit different electrical signals, and the third signal line and the first signal line are also used to transmit different electrical signals.

3. The display panel according to claim 2, wherein: The display panel further includes a color filter layer, wherein the color filter layer is located between the first auxiliary electrode and the substrate, and the first auxiliary electrode and the second auxiliary electrode are arranged in the same layer.

4. The display panel according to claim 2, wherein: The display panel further includes a plurality of gate scanning lines extending along a first direction and data lines extending along a second direction, the gate scanning lines and the data lines intersecting to define a plurality of pixel areas, each of the pixel areas is provided with one sub-pixel, and the first signal line is electrically connected to the data line; The pixel electrode includes a first trunk electrode extending along the first direction and a second trunk electrode extending along the second direction, the first trunk electrode and the second trunk electrode divide the pixel electrode into four display domains; the first auxiliary electrode overlaps with a portion of each of the four display domains, and the second auxiliary electrode overlaps with another portion of each of the four display domains.

5. The display panel according to claim 4, wherein: A first midline of the first auxiliary electrode in the first direction coincides with the first main electrode, and a second midline of the first auxiliary electrode in the second direction coincides with the second main electrode.

6. The display panel according to claim 4, wherein: The second auxiliary electrode includes a first sub-electrode located on one side of the first auxiliary electrode and a second sub-electrode located on a side of the first auxiliary electrode away from the first sub-electrode, the first sub-electrode overlaps with the other partial areas of two of the four display domains, and the second sub-electrode overlaps with the other partial areas of the other two of the four display domains.

7. The display panel according to claim 6, wherein: The first sub-electrode half surrounds the first auxiliary electrode, the second sub-electrode also half surrounds the first auxiliary electrode, and the first sub-electrode and the second sub-electrode are both electrically connected to the third signal line.

8. The display panel according to claim 6, wherein: The display panel further includes a first light-shielding electrode disposed corresponding to the data line. In the first direction, a width of the first light-shielding electrode is greater than or equal to a width of the data line.

9. The display panel according to claim 8, wherein: The first sub-electrode or the second sub-electrode extends from a side away from the first auxiliary electrode to a direction close to the data line to form the first light shielding electrode.

10. The display panel according to claim 9, wherein: In the first direction, the first sub-electrode is connected to the second sub-electrode in the adjacent sub-pixel.

11. The display panel according to claim 8, wherein: The first light-shielding electrode is located between two adjacent sub-pixels, and the first sub-electrode is connected to the second sub-electrode in the adjacent sub-pixel through the first light-shielding electrode.

12. The display panel according to claim 6, wherein: The display panel further includes a second common electrode disposed in the same layer as the gate scan line, and a second light-shielding electrode disposed corresponding to the second common electrode. In the second direction, the width of the second light-shielding electrode is greater than or equal to the width of the second common electrode.

13. The display panel according to claim 12, wherein: The first sub-electrode and / or the second sub-electrode extends toward the second common electrode of the adjacent sub-pixel to form the second light-shielding electrode.

14. The display panel according to claim 13, wherein: The display panel further includes a first common electrode located at a side of the pixel electrode away from the substrate, and a difference between a voltage on the second auxiliary electrode and a voltage on the first common electrode is greater than or equal to -2V and less than or equal to 2V.

15. The display panel according to claim 6, wherein: The display panel further includes a third light-shielding electrode disposed corresponding to the gate scanning line. In the second direction, a width of the third light-shielding electrode is greater than or equal to a width of the gate scanning line.

16. The display panel according to claim 15, wherein: The first sub-electrode and / or the second sub-electrode extend toward the direction close to the gate scanning line to form the third light-shielding electrode.

17. The display panel according to claim 6, wherein: In the second direction, two adjacent first sub-electrodes are electrically connected, two adjacent second sub-electrodes are electrically connected, and two adjacent first auxiliary electrodes are electrically connected.

18. The display panel according to claim 17, wherein: The display panel also includes a first connecting line extending along the second direction, and two adjacent first auxiliary electrodes are electrically connected through the first connecting line; in the same sub-pixel, there is a first gap between adjacent first sub-electrodes and second sub-electrodes, and the first connecting line passes through the first gap.

19. The display panel according to claim 17, wherein: The display panel also includes a display area and the second signal line and the third signal line located outside the display area, the sub-pixel is located in the display area, the second signal line is located on one side of the display area, and the third signal line is located on a side of the display area away from the second signal line.

20. An electronic device comprising the display panel as claimed in claim 1.

Images