CN117518558A

CN117518558A - Display panel and display terminal

Info

Publication number: CN117518558A
Application number: CN202311376050.5A
Authority: CN
Inventors: 李家惠; 孙宇成; 朱梦青; 付立松
Original assignee: TCL Huaxing Photoelectric Technology Co Ltd
Current assignee: TCL Huaxing Photoelectric Technology Co Ltd
Priority date: 2023-10-23
Filing date: 2023-10-23
Publication date: 2024-02-06

Abstract

The application discloses a display panel and a display terminal. The display panel comprises a pixel electrode arranged on a first substrate and a public electrode arranged on a second substrate, wherein the pixel electrode comprises a plurality of first branch electrodes at intervals, the public electrode comprises a plurality of second branch electrodes at intervals, an auxiliary electrode is arranged between the pixel electrode and the first substrate, and/or the auxiliary electrode is arranged between the public electrode and the second substrate, and orthographic projections of the first branch electrode and the second branch electrode on the auxiliary electrode are all positioned in the auxiliary electrode. According to the liquid crystal display panel, the auxiliary electrode is arranged, orthographic projections of the first branch electrode and the second branch electrode on the auxiliary electrode are all located in the auxiliary electrode, the auxiliary electrode can form an additional electric field with the first branch electrode or the second branch electrode which are opposite, the additional electric field can be overlapped with an electric field formed between the pixel electrode and the common electrode, and therefore the electric field where the liquid crystal layer is located is enhanced, and the response speed of the liquid crystal display panel is improved.

Description

Display panel and display terminal

Technical Field

The application relates to the technical field of display, in particular to a display panel and a display terminal.

Background

The liquid crystal display panel has the advantages of high resolution, small volume, light weight and the like, and is widely applied to the technical field of display. The liquid crystal display panel controls the deflection of liquid crystal molecules through an electric field, so that the brightness of a display picture is controlled. The reaction speed of the liquid crystal molecules determines the response speed of the liquid crystal display panel. When the response speed is low, a 'smear' phenomenon is generated, and the display effect is affected.

Therefore, there is a need to solve the above-mentioned technical problems.

Disclosure of Invention

The application provides a display panel and a display terminal, which are used for improving the technical problem of slow response speed of a liquid crystal display panel.

In order to solve the technical problems, the technical scheme provided by the application is as follows:

the application provides a display panel, the display panel includes:

a first substrate;

a second substrate facing the first substrate with a gap;

the pixel electrodes are arranged on one side of the first substrate facing the second substrate and comprise a plurality of first branch electrodes at intervals;

the common electrode is arranged on one side of the second substrate facing the first substrate and comprises a plurality of second branch electrodes at intervals;

the liquid crystal layer is arranged between the first substrate and the second substrate; and

an auxiliary electrode disposed between the pixel electrode and the first substrate and/or between the common electrode and the second substrate;

the front projection of the first branch electrode on the second substrate at least covers the edge lines of the adjacent two second branch electrodes, which are close to each other, and the front projections of the first branch electrode and the second branch electrode on the auxiliary electrode are both positioned in the auxiliary electrode.

In the display panel of the present application, the auxiliary electrode includes a plurality of first electrode portions disposed on the first substrate, and the first electrode portions are disposed between the pixel electrode and the first substrate, and one first electrode portion corresponds to and is electrically connected to one pixel electrode.

In the display panel, a first insulating layer is arranged between a first electrode part and a pixel electrode, and the first electrode part and the pixel electrode are electrically connected through a first electric connecting column; alternatively, the first electrode portion is disposed in contact with the pixel electrode, and a first insulating layer is disposed on a side of the first electrode portion facing away from the pixel electrode.

In the display panel of the present application, the auxiliary electrode includes a second electrode portion disposed on the second substrate, and the second electrode portion is disposed between the common electrode and the second substrate, and the second electrode portion is electrically connected to the common electrode.

In the display panel of the present application, the auxiliary electrode includes at least one second electrode portion, and a second insulating layer is disposed between the second electrode portion and the common electrode, or the second electrode portion is disposed in contact with the common electrode.

In the display panel of the present application, the pixel electrode includes a first trunk electrode connected to the plurality of first branch electrodes, the first trunk electrode includes a first wide portion and a first narrow portion, the first wide portion and the first narrow portion are alternately connected along a first direction, and a width of the first wide portion is larger than a width of the first narrow portion;

the public electrode comprises a second trunk electrode connected with a plurality of second branch electrodes, a plurality of first openings are arranged on the second trunk electrode, and the plurality of first openings are arranged at intervals along a first direction;

wherein at least part of the orthographic projection of the first narrow portion on the common electrode is located in the first opening.

In the display panel of the application, the first narrow part comprises a first sub-section and a second sub-section, one end of the first sub-section is connected with a first wide part in the first direction, the other end of the first sub-section is connected with the second sub-section, and the other end of the second sub-section is connected with another first wide part;

the width of the first sub-section decreases from one side of the first sub-section connected with the first wide part to one side of the first sub-section connected with the second sub-section, and the width of the second sub-section decreases from one side of the second sub-section connected with the first wide part to one side of the second sub-section connected with the first sub-section.

In the display panel of the present application, the width of the first branch electrode and the width of the second branch electrode are the same, and the pitch between the adjacent two first branch electrodes and the pitch between the adjacent two second branch electrodes are the same.

In the display panel, in one sub-pixel of the display panel, the pixel electrode comprises a first peripheral electrode, the first peripheral electrode extends along a first direction, and a plurality of first branch electrodes are connected to the first peripheral electrode; the common electrode includes a second peripheral electrode extending in the first direction, a plurality of second branch electrodes connected to the second peripheral electrode, and an orthographic projection of the second peripheral electrode on the pixel electrode at least partially overlaps the first peripheral electrode.

The application also provides a display terminal, which comprises the display panel.

The beneficial effects are that: the application discloses a display panel and a display terminal. The display panel comprises a first substrate, a second substrate, a pixel electrode, a common electrode, a liquid crystal layer and an auxiliary electrode. The second substrate is opposite to the first substrate at intervals, the pixel electrodes are arranged on one side of the first substrate facing the second substrate, the pixel electrodes comprise a plurality of first branch electrodes at intervals, the common electrode is arranged on one side of the second substrate facing the first substrate, the common electrode comprises a plurality of second branch electrodes at intervals, the liquid crystal layer is arranged between the first substrate and the second substrate, the auxiliary electrode is arranged between the pixel electrodes and the first substrate, and/or the auxiliary electrode is arranged between the common electrode and the second substrate; the front projection of the first branch electrode on the second substrate at least covers the edge lines of the adjacent two second branch electrodes, which are close to each other, and the front projections of the first branch electrode and the second branch electrode on the auxiliary electrode are both positioned in the auxiliary electrode. According to the liquid crystal display device, the auxiliary electrode is arranged between the pixel electrode and the first substrate and/or between the common electrode and the second substrate, the orthographic projections of the first branch electrode and the second branch electrode on the auxiliary electrode are all located in the auxiliary electrode, the auxiliary electrode can form an additional electric field with the first branch electrode or the second branch electrode which are opposite, and the additional electric field can be overlapped with the electric field formed between the pixel electrode and the common electrode, so that the electric field where the liquid crystal layer is located is enhanced. The increase of the electric field strength can improve the reaction speed of liquid crystal molecules, thereby improving the response speed of the display panel.

Drawings

Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic top view of a display panel according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a partial enlarged structure of one sub-pixel in FIG. 1;

FIG. 3a is a schematic diagram of an exploded structure of a portion of the film layer of FIG. 2;

FIG. 3b is a schematic view of an exploded structure of a further portion of the membrane layer in FIG. 2;

FIG. 4 is an enlarged schematic cross-sectional view of the first sub-pixel at A-A in FIG. 2;

FIG. 5 is an enlarged schematic view of a cross-sectional structure of a second sub-pixel at A-A in FIG. 2;

FIG. 6 is an enlarged schematic cross-sectional view of the third sub-pixel at A-A in FIG. 2;

FIG. 7 is an enlarged schematic cross-sectional view of the fourth sub-pixel at A-A in FIG. 2;

fig. 8 is an enlarged schematic view of a cross-sectional structure of a fifth seed pixel at A-A in fig. 2.

Reference numerals illustrate:

the first substrate 10, the pixel electrode 30, the first branch electrode 31, the first trunk electrode 32, the first wide portion 321, the first narrow portion 322, the first subsection 3221, the second subsection 3222, the first peripheral electrode 33, the width L1 of the first branch electrode, the space S1 between two adjacent first branch electrodes, the third trunk electrode 34, the second substrate 20, the common electrode 40, the second branch electrode 41, the second trunk electrode 42, the first opening 421, the second peripheral electrode 43, the width L2 of the second branch electrode, the space S2 between two adjacent second branch electrodes, the fourth trunk electrode 44, the liquid crystal layer 50, the auxiliary electrode 60, the first electrode portion 61, the second electrode portion 62, the first insulating layer 71, the second insulating layer 72, the first direction D1, the second direction D2, the sub-pixel 80, the array layer 81, the color resist layer 82, the display area AA, the non-display area NA, the connection trace 35, and the first electrical connection post 90.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.

The present application provides a display panel, as shown in fig. 1 to 8, the display panel includes a first substrate 10, a second substrate 20, a pixel electrode 30, a common electrode 40, a liquid crystal layer 50, and an auxiliary electrode 60. The second substrate 20 is opposite to the first substrate 10 at intervals, a plurality of pixel electrodes 30 are arranged on one side of the first substrate 10 facing the second substrate 20, the pixel electrodes 30 comprise a plurality of first branch electrodes 31 at intervals, the common electrode 40 is arranged on one side of the second substrate 20 facing the first substrate 10, the common electrode 40 comprises a plurality of second branch electrodes 41 at intervals, the liquid crystal layer 50 is arranged between the first substrate 10 and the second substrate 20, the auxiliary electrode 60 is arranged between the pixel electrodes 30 and the first substrate 10, and/or between the common electrode 40 and the second substrate 20; the front projection of the first branch electrode 31 on the second substrate 20 covers at least the edge lines of two adjacent second branch electrodes 41, and the front projections of the first branch electrode 31 and the second branch electrode 41 on the auxiliary electrode 60 are both located in the auxiliary electrode 60.

In this embodiment, the display panel is a liquid crystal display panel or the like. The display panel includes a plurality of sub-pixels 80, and the sub-pixels 80 may be red sub-pixels, green sub-pixels, and blue sub-pixels, but is not limited thereto.

In this embodiment, the display panel further includes a color resist layer 82, where the color resist layer 82 includes red, green, and blue color resists, and the color resist layer 82 is used to enable the display panel to realize color display. The color resist layer 82 may be disposed on the first substrate 10 or the second substrate 20. When the color resist layer 82 is disposed on the second substrate 20, the color resist layer may be in the form of COA (CF on Array) on the Array substrate. But is not limited thereto.

In the present embodiment, the first substrate 10 and the second substrate 20 may be glass substrates, but are not limited thereto. The first substrate 10 and the second substrate 20 are opposite to each other and are spaced apart from each other. A liquid crystal layer 50 is disposed between the first substrate 10 and the second substrate 20.

In the present embodiment, the side of the first substrate 10 facing the second substrate 20 is provided with the pixel electrodes 30, one pixel electrode 30 is disposed corresponding to one sub-pixel 80, and the pixel electrodes 30 of the plurality of sub-pixels 80 are disposed insulated from each other. An array layer 81 is further disposed between the pixel electrode 30 and the first substrate 10, the array layer 81 includes a pixel driving circuit, the pixel driving circuit includes a plurality of thin film transistors, and the source-drain layer of the thin film transistors is connected to the pixel electrode 30, and the pixel driving circuit is used for controlling the driving voltage of the pixel electrode 30 of each sub-pixel 80.

The second substrate 20 is provided with a common electrode 40 at a side facing the first substrate 10, and the common electrode 40 may apply a common voltage. An electric field is formed between the driving voltage and the common voltage, and the electric field can control the deflection of the liquid crystal molecules in the liquid crystal layer 50, thereby controlling the brightness of the display screen.

The display panel includes a display area AA and a non-display area NA located at the periphery of the display area AA, and the non-display area NA may be provided with at least one common voltage input terminal, and a common voltage may be input from the common voltage input terminal. The common voltage input terminal may be located on the first substrate 10 and input to the common electrode 40 located on the second substrate 20 by means of a conductive gold ball or the like, but is not limited thereto. The common electrodes 40 of the display panel are electrically connected to each other so that a common voltage can be input to all the sub-pixels 80 through a common voltage input terminal.

Note that the pixel electrode 30 and the common electrode 40 are patterned electrodes, the pixel electrode 30 may include a plurality of spaced first branch electrodes 31, and the common electrode 40 may include a plurality of spaced second branch electrodes 41.

The orthographic projection of the first branch electrode 31 on the second substrate 20 covers at least the edge lines of the adjacent two second branch electrodes 41 that are close to each other. That is, in the orthographic projection pattern of the display panel on the display surface, the first branch electrode 31 covers at least the gap between the adjacent two second branch electrodes 41, and the first branch electrode 31 covers at least the edge line where the adjacent two second branch electrodes 41 are close to each other. That is, at least one of the first and second branch electrodes 31 and 41 is disposed offset and overlapped at the edge. By the above arrangement, an oblique electric field can be formed between a part of the first branch electrode 31 and the second branch electrode 41.

It should be understood that, under other conditions, when the first branch electrode 31 and the second branch electrode 41 are aligned in the positive direction, a vertical electric field is formed between the first branch electrode 31 and the second branch electrode 41 which are opposite in the positive direction. The positive opposition refers to a region where the front projections of the first branch and the second branch on the display surface of the display panel overlap. Since the strength of the oblique electric field is greater than that of the vertical electric field, the first branch electrode 31 and the second branch electrode 41 are arranged in a staggered manner and the edges overlap, so that the strength of the electric field can be enhanced, the reaction speed of liquid crystal molecules can be improved by increasing the strength of the electric field, and the response speed of the display panel can be further improved.

In some embodiments, the auxiliary electrode 60 may be disposed between the pixel electrode 30 and the first substrate 10.

In some embodiments, the auxiliary electrode 60 may be disposed between the common electrode 40 and the second substrate 20.

In some embodiments, the auxiliary electrode 60 may be disposed between the pixel electrode 30 and the first substrate 10 and between the common electrode 40 and the second substrate 20 at the same time.

It should be understood that in all embodiments of the present application, the auxiliary electrode 60, the pixel electrode 30, and the common electrode 40 are made of transparent conductive materials, so as not to affect the light transmission. The transparent conductive material may be ITO (indium tin oxide), IZO (indium zinc oxide), IZTO (indium zinc tin oxide), IAZO (indium aluminum zinc oxide), IGZO (indium gallium zinc oxide), IGTO (indium gallium tin oxide), AZO (aluminum zinc oxide), ATO (antimony tin oxide), IGZTO (indium gallium zinc tin oxide), or the like, but is not limited thereto.

When the auxiliary electrode 60 is positioned between the pixel electrode 30 and the first substrate 10, the auxiliary electrode 60 may input the same driving voltage as the pixel electrode 30.

When the auxiliary electrode 60 is positioned between the common electrode 40 and the second substrate 20, the auxiliary electrode 60 may input the same common voltage as the common electrode 40.

When the auxiliary electrode 60 is simultaneously disposed between the pixel electrode 30 and the first substrate 10 and between the common electrode 40 and the second substrate 20, the auxiliary electrode 60 between the pixel electrode 30 and the first substrate 10 may input the same driving voltage as the pixel electrode 30, and the auxiliary electrode 60 between the common electrode 40 and the second substrate 20 may input the same common voltage as the common electrode 40.

By providing the auxiliary electrode 60, the orthographic projections of the first branch electrode 31 and the second branch electrode 41 on the auxiliary electrode 60 are both located in the auxiliary electrode 60, and the auxiliary electrode 60 can form an additional electric field with the first branch electrode 31 or the second branch electrode 41 which are diametrically opposed, and the additional electric field can be superimposed with the oblique electric field formed between the pixel electrode 30 and the common electrode 40, thereby enhancing the electric field in which the liquid crystal layer 50 is located. The increase of the electric field strength can improve the reaction speed of liquid crystal molecules, thereby improving the response speed of the display panel.

It should be understood that the auxiliary electrode 60 may be provided as a patterned electrode or as an electrode of an entire layer according to the voltage requirement inputted from the auxiliary electrode 60. That is, when the auxiliary electrode 60 is used to input a driving voltage, one auxiliary electrode 60 may be set to correspond to one sub-pixel 80; when the auxiliary electrode 60 is used to input a common voltage, the auxiliary electrode 60 may be entirely disposed or the auxiliary electrode 60 may be patterned. When the auxiliary electrode 60 is provided entirely, a mask can be saved.

Further, in the auxiliary electrode 60 corresponding to one sub-pixel 80, the auxiliary electrode 60 may be patterned. That is, the auxiliary electrode 60 may also include a plurality of auxiliary branch electrodes disposed at intervals, which can form an additional vertical electric field with the first branch electrode 31 or the second branch electrode 41 that are diametrically opposite.

In the display panel of the present application, as shown in fig. 2 to 4, the auxiliary electrode 60 includes a plurality of first electrode portions 61 provided on the first substrate 10, and the first electrode portions 61 are provided between the pixel electrode 30 and the first substrate 10, and one first electrode portion 61 corresponds to and is electrically connected to one pixel electrode 30.

In the present embodiment, the first electrode portion 61 is disposed between the pixel electrode 30 and the first substrate 10, and orthographic projections of the first branch electrode 31 and the second branch electrode 41 on the first electrode portion 61 are located within the first electrode portion 61. It is understood that one first electrode portion 61 is provided corresponding to one sub-pixel 80, and the first electrode portion 61 inputs the same driving voltage as the pixel electrode 30 of the corresponding sub-pixel 80. Since the portion of the first electrode portion 61 located between the adjacent two first branch electrodes 31 is opposite to the second branch electrode 41, the opposite first electrode portion 61 and the second branch electrode 41 can form a vertical additional electric field, so as to compensate the electric field loss at the gap between the adjacent two first branch electrodes 31 caused by the interval arrangement of the adjacent two first branch electrodes 31, and enhance the electric field strength.

Further, in the present embodiment, as shown in fig. 4 and 5, a first insulating layer 71 is provided between the first electrode portion 61 and the pixel electrode 30, and the first electrode portion 61 and the pixel electrode 30 are electrically connected through a first electrical connection post 90; alternatively, the first electrode portion 61 is provided in contact with the pixel electrode 30 and a first insulating layer 71 is provided on a side of the first electrode portion 61 facing away from the pixel electrode 30.

In the present embodiment, the first insulating layer 71 may be an organic insulating layer, and the material of the first insulating layer 71 may be one selected from the group consisting of acrylic resin, epoxy resin, and perfluoroalkoxy resin, but is not limited thereto. The first insulating layer 71 may function as an insulating layer and may also function as a planarization layer. The first insulating layer 71 has a flat upper surface and is fabricated by subsequent film layers.

In some embodiments, as shown in fig. 4, fig. 4 is an enlarged schematic diagram of a cross-sectional structure of the first sub-pixel 80 at A-A. The first electrode portion 61 corresponds to and is electrically connected to one pixel electrode 30. The first electrode portion 61 and the pixel electrode 30 may be electrically connected through the first electrical connection post 90, the first electrical connection post 90 may be disposed in the sub-pixel 80, in order to avoid interference of the first electrical connection post 90 on the electric field, the orthographic projection of the first electrical connection post 90 on the display surface may not overlap with the orthographic projection of the pixel electrode 30 on the display surface, the pixel electrode 30 and the first electrical connection post 90 may be connected through the connection trace 35, and the connection trace 35 and the pixel electrode 30 are disposed on the same layer and connected. That is, the first electrical connection post 90 penetrates the first insulating layer 71, one end of the first electrical connection post 90 is connected to the connection trace 35, and the other end is connected to the first electrode portion 61.

In some embodiments, as shown in fig. 5, fig. 5 is an enlarged schematic diagram of a cross-sectional structure of the second sub-pixel 80. The second sub-pixel 80 is different from the first sub-pixel 80 in that the first electrode portion 61 is disposed in contact with the pixel electrode 30 and that a side of the first electrode portion 61 facing away from the pixel electrode 30 is provided with the first insulating layer 71, that is, no other film layer may be disposed between the first electrode portion 61 and the pixel electrode 30, and the first insulating layer 71 is disposed under the first electrode portion 61. The first electrode portion 61 and the pixel electrode 30 may be formed through two processes. First, the first electrode portion 61 is formed, the first electrode portion 61 is a block electrode provided corresponding to the sub-pixel 80, and no patterning structure is provided on the block electrode. Then, the patterned pixel electrode 30 is formed on the first electrode portion 61. Alternatively, in some embodiments, the first electrode portion 61 and the pixel electrode 30 may be fabricated using a half-tone mask (half-tone) process. That is, the first electrode portion 61 and the pixel electrode 30 may be formed of the same material through the same Zhang Guangzhao process, wherein the first electrode portion 61 is connected to the adjacent two first branch electrodes 31, and the thickness of the first electrode portion 61 is smaller than that of the first branch electrodes 31, so that the first electrode portion 61 and the pixel electrode 30 may be simultaneously formed in one patterning process. By the arrangement, the manufacturing process of the display panel can be simplified, and the manufacturing cost of the photomask is not increased.

In the display panel of the present application, as shown in fig. 6 and 8, the auxiliary electrode 60 includes a second electrode portion 62 provided on the second substrate 20, and the second electrode portion 62 is provided between the common electrode 40 and the second substrate 20, and the second electrode portion 62 is electrically connected to the common electrode 40.

In the present embodiment, the second electrode portion 62 is disposed between the common electrode 40 and the second substrate 20, and orthographic projections of the first branch electrode 31 and the second branch electrode 41 on the second electrode portion 62 are located within the second electrode portion 62. It is understood that the second electrode part 62 may be disposed corresponding to the sub-pixel 80 or disposed in a whole layer, and the second electrode part 62 inputs the same common voltage as the common electrode 40. Since the portion of the second electrode portion 62 located between the two adjacent second branch electrodes 41 is opposite to the first branch electrode 31, the two opposite second electrode portions 62 and the first branch electrode 31 can form a vertical additional electric field, so as to compensate the electric field loss at the gap between the two adjacent second branch electrodes 41 caused by the interval arrangement of the two adjacent second branch electrodes 41, and enhance the electric field strength.

Further, in the display panel of the present application, or, the second electrode portion 62 is provided in contact with the common electrode 40.

In the present embodiment, the second insulating layer 72 may be a passivation layer, and the material of the second insulating layer 72 may be, but not limited to, silicon nitride, silicon carbide nitride, silicon oxide, and the like.

In some embodiments, the second electrode portion 62 may be disposed in an entire layer, and the second electrode portion 62 corresponds to the plurality of sub-pixels 80.

In some embodiments, as shown in fig. 6, fig. 6 is an enlarged schematic diagram of a cross-sectional structure of the third sub-pixel 80. The second electrode portion 62 is provided as a whole layer, and a second insulating layer 72 is provided between the second electrode portion 62 and the common electrode 40.

Alternatively, the second electrode portion 62 may be provided for patterning in some embodiments. For example, the second electrode portion 62 may be a block electrode provided corresponding to the sub-pixel 80. The plurality of block electrodes are connected through wirings so as to input the same common voltage.

In some embodiments, as shown in fig. 7, fig. 6 is an enlarged schematic diagram of a cross-sectional structure of a fourth sub-pixel 80. The fourth sub-pixel 80 is different from the third sub-pixel 80 in that the second electrode part 62 is disposed in contact with the common electrode 40, that is, no other film layer may be disposed between the second electrode part 62 and the common electrode 40. With the above arrangement, the second insulating layer 72 can be omitted, thereby simplifying the manufacturing process of the display panel.

Further, the second electrode portion 62 and the common electrode 40 may be manufactured through the same Zhang Guangzhao using a half-tone mask (half-tone) process, so that the manufacturing process of the display panel may be further simplified without increasing the manufacturing cost of the mask.

Alternatively, in some embodiments, as shown in fig. 8, fig. 8 is an enlarged schematic view of a cross-sectional structure of the fifth seed pixel 80. The fifth seed pixel 80 is different from the first seed pixel 80 in that the fifth seed pixel 80 is further provided with the second electrode portion 62. In the fifth sub-pixel 80, the auxiliary electrode 60 includes the first electrode portion 61 and the second electrode portion 62, and the arrangement of the first electrode portion 61 and the second electrode portion 62 is not repeated herein with reference to the above-described embodiment. By providing the first electrode portion 61 and the second electrode portion 62 at the same time, it is possible to compensate for both the electric field loss at the gap between the adjacent two first branch electrodes 31 caused by the spaced arrangement of the adjacent two first branch electrodes 31 and the electric field loss at the gap between the adjacent two second branch electrodes 41 caused by the spaced arrangement of the adjacent two second branch electrodes 41, thereby further enhancing the electric field strength.

In the display panel of the present application, please refer to fig. 2, 3a and 3b, wherein fig. 2 is a schematic enlarged partial structure of one sub-pixel 80 in fig. 1, which shows the front projection pattern of the common electrode 40 and the pixel electrode 30 on the display surface. Fig. 3a is a front projection pattern of the film layer of the pixel electrode 30 in fig. 2 on the display surface, and fig. 3b is a front projection pattern of the film layer of the common electrode 40 in fig. 2 on the display surface.

As shown in fig. 3a, the pixel electrode 30 includes a first stem electrode 32 connected to a plurality of first branch electrodes 31, the first stem electrode 32 includes a first wide portion 321 and a first narrow portion 322, the first wide portion 321 and the first narrow portion 322 are alternately connected along a first direction D1, and a width of the first wide portion 321 is greater than a width of the first narrow portion 322; the common electrode 40 includes a second main electrode 42 connected to the plurality of second branch electrodes 41, the second main electrode 42 is provided with a plurality of first openings 421, and the plurality of first openings 421 are arranged at intervals along the first direction D1; wherein at least a portion of the orthographic projection of the first narrow portion 322 on the common electrode 40 is located within the first opening 421.

In the present embodiment, the plurality of first branch electrodes 31 are connected to the first main electrode 32, and the driving voltage of the pixel electrode 30 is transmitted to the plurality of first branch electrodes 31 through the first main electrode 32, so that the plurality of first branch electrodes 31 have uniform driving voltages.

The first backbone electrode 32 includes first wide portions 321 and first narrow portions 322 alternately connected along the first direction D1, and a width of the first width is greater than a width of the first narrow portions 322 in a direction perpendicular to the first direction D1. That is, the first backbone electrode 32 has at least two alternating widths.

As shown in fig. 3b, the common electrode 40 includes a second main electrode 42, and a plurality of second branch electrodes 41 are connected to the second main electrode 42 overseas, and a common voltage of the common electrode 40 is transmitted to the plurality of second branch electrodes 41 through the second main electrode 42, so that the plurality of second branch electrodes 41 have a uniform common voltage.

The second main electrode 42 is provided with a plurality of first openings 421, the first openings 421 are spaced along the first direction D1, and the first openings 421 are disposed corresponding to the first narrow portions 322. The orthographic projection of the first narrow portion 322 on the common electrode 40 is at least partially located within the first opening 421. By the arrangement, the first main electrode 32 and the second main electrode 42 can be at least partially arranged in a dislocation manner, so that an oblique electric field is formed between the first main electrode 32 and the second main electrode 42, and the electric field where the liquid crystal layer 50 is located is enhanced.

Further, as shown in fig. 3a, in the display panel of the present application, the first narrow portion 322 includes a first sub-segment 3221 and a second sub-segment 3222, in the first direction D1, one end of the first sub-segment 3221 is connected to a first wide portion 321, the other end of the first sub-segment 3221 is connected to the second sub-segment 3222, and the other end of the second sub-segment 3222 is connected to another first wide portion 321; the width of the first subsection 3221 decreases from the first side of the first subsection 3221 connected to the first wide portion 321 to the first side of the first subsection 3221 connected to the second subsection 3222, and the width of the second subsection 3222 decreases from the second side of the second subsection 3222 connected to the first wide portion 321 to the second side of the second subsection 3222 connected to the first side of the first subsection 3221.

In the present embodiment, the first narrow portion 322 includes a first sub-section 3221 and a second sub-section 3222 connected, and the width of the first sub-section 3221 decreases and the width of the second sub-section 3222 decreases in a direction in which the first sub-section 3221 and the second sub-section 3222 approach each other. The narrowest of the first subsection 3221 and the narrowest of the second subsection 3222 are connected. By the above arrangement, the spacing between the edge line of the orthographic projection of the first sub-segment 3221 and the second sub-segment 3222 on the common electrode 40 and the edge line of the first opening 421 is unequal, so that even if the first main electrode 32 and the second main electrode 42 are misplaced due to the limitation of the process precision, at least part of the edge lines of the first sub-segment 3221 and the second sub-segment 3222 can be located in the first opening 421, thereby smoothly forming the oblique electric field.

Further, in some embodiments, at least part of the edge lines of the first sub-segment 3221 are parallel to the extending direction of the first branch electrode 31, so that the edge lines of the first sub-segment 3221 are consistent with the extending direction of the first branch electrode 31, and the difference between the electric field at the edge lines of the first sub-segment 3221 and the electric field at the first branch electrode 31 is reduced, so as to avoid the disorder of the arrangement of the liquid crystal molecules.

Similarly, in some embodiments, at least part of the edge lines of the second sub-segment 3222 are parallel to the extending direction of the first branch electrode 31, so that the edge lines of the second sub-segment 3222 are aligned with the extending direction of the first branch electrode 31, and the difference between the electric field at the edge lines of the second sub-segment 3222 and the electric field at the first branch electrode 31 is reduced, so that the arrangement disorder of the liquid crystal molecules is avoided.

In the display panel of the present application, as shown in fig. 3a and 3b, the width L1 of the first branch electrode and the width L2 of the second branch electrode are the same, and the space S1 between two adjacent first branch electrodes and the space S2 between two adjacent second branch electrodes are the same.

In the present embodiment, the extending direction of the first branch electrode 31 is the longitudinal direction, and the direction perpendicular to the longitudinal direction is the width direction. The pitch between the adjacent two first branch electrodes 31 is the width of the gap between the adjacent two first branch electrodes 31 in the width direction.

The extending direction of the second branch electrode 41 is a longitudinal direction, and the direction perpendicular to the longitudinal direction is a width direction. The width L1 of the first branch electrode is the same as the width L2 of the second branch electrode, and the interval between the adjacent two second branch electrodes 41 is the width of the gap between the adjacent two second branch electrodes 41 in the width direction.

By setting the widths L1 and L2 of the first and second branch electrodes to be the same, the spacing S1 between adjacent two first branch electrodes and the spacing S2 between adjacent two second branch electrodes are set to be the same, so that the alignment relationship of the plurality of first branch electrodes 31 and the plurality of second branch electrodes 41 can be made uniform, and the first branch electrodes 31 and the second branch electrodes 41 can be kept in uniform dislocation arrangement to form an oblique electric field.

In the display panel of the present application, as shown in fig. 3a and 3b, in one sub-pixel 80 of the display panel, the pixel electrode 30 includes a first peripheral electrode 33, the first peripheral electrode 33 extends along a first direction D1, and a plurality of first branch electrodes 31 are connected to the first peripheral electrode 33; the common electrode 40 includes a second peripheral electrode 43, the second peripheral electrode 43 extending along the first direction D1, a plurality of second branch electrodes 41 connected to the second peripheral electrode 43, and a orthographic projection of the second peripheral electrode 43 on the pixel electrode 30 at least partially overlaps the first peripheral electrode 33.

In the present embodiment, the first peripheral electrode 33 may extend along the first direction D1, and the extending direction of the first peripheral electrode 33 is parallel to the extending direction of the first trunk electrode 32. One end of the plurality of first branch electrodes 31 is connected to the first trunk electrode 32, and the other end is connected to the first peripheral electrode 33. With the above arrangement, the driving voltages of the plurality of first branch electrodes 31 can be made more uniform.

The second peripheral electrode 43 may extend in the first direction D1, and an extending direction of the second peripheral electrode 43 is parallel to an extending direction of the second main electrode 42. One end of the plurality of second branch electrodes 41 is connected to the second main electrode 42, and the other end is connected to the second peripheral electrode 43. By the above arrangement, the common voltage of the plurality of second branch electrodes 41 can be made more uniform.

In the present embodiment, the orthographic projection of the second peripheral electrode 43 on the pixel electrode 30 at least partially overlaps the first peripheral electrode 33. With the above arrangement, at least part of the areas of the first and second peripheral electrodes 33 and 43 are in positive opposition, and the first and second peripheral electrodes 33 and 43 in positive opposition can form a vertical electric field, avoiding the collision of the tilting direction of the liquid crystal molecules in the edge area of the pixel electrode 30 within one sub-pixel 80 with the tilting direction of the liquid crystal molecules in the middle area of the pixel electrode 30, so that the light transmittance in the edge area of the sub-pixel 80 can be improved.

Alternatively, as shown in fig. 3a, the pixel electrode 30 may include a third stem electrode 34, the third stem electrode 34 being disposed to intersect the first stem electrode 32. The third trunk electrode 34 extends along a second direction D2, and the second direction D2 and the first direction D1 form an included angle. The included angle may be a right angle or an acute angle. The plurality of first branch electrodes 31 are connected to the third trunk electrode 34.

Correspondingly, as shown in fig. 3b, the common electrode 40 may include a fourth backbone electrode 44, the fourth backbone electrode 44 being disposed to cross the second backbone electrode 42. The fourth stem electrode 44 extends along the second direction D2. The plurality of second branch electrodes 41 are connected to the fourth trunk electrode 44.

It should be appreciated that the arrangement of the third backbone electrode 34 may be similar to the arrangement of the first backbone electrode 32, i.e. the first wide portion 321 and the first narrow portion 322 may be arranged on the third backbone electrode 34. The fourth backbone electrode 44 may be arranged similarly to the second backbone electrode 42, i.e. the fourth backbone electrode 44 may have the first opening 421 arranged therein. The arrangement of the first wide portion 321, the first narrow portion 322, and the first opening 421 is described with reference to the above-described embodiments, and will not be repeated here.

In some embodiments, the first opening 421 may be disposed on the first main electrode 32, and the first wide portion 321 and the first narrow portion 322 may be disposed on the second main electrode 42, so that the purpose of forming an oblique electric field between the first main electrode 32 and the second main electrode 42 may be achieved.

In this embodiment, the display terminal may be: any product or component with display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The display panel and the display terminal provided by the embodiments of the present application are described in detail, and specific examples are applied to illustrate the principles and the implementation of the present application, and the description of the above embodiments is only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, comprising:

a first substrate;

a second substrate disposed opposite to the first substrate at a distance;

a plurality of pixel electrodes disposed on a side of the first substrate facing the second substrate, the pixel electrodes including a plurality of spaced first branch electrodes;

a common electrode disposed on a side of the second substrate facing the first substrate, the common electrode including a plurality of spaced second branch electrodes;

a liquid crystal layer disposed between the first substrate and the second substrate; and

the orthographic projection of the first branch electrode on the second substrate at least covers edge lines, close to each other, of two adjacent second branch electrodes, and orthographic projections of the first branch electrode and the second branch electrode on the auxiliary electrode are both located in the auxiliary electrode.

2. The display panel according to claim 1, wherein the auxiliary electrode includes a plurality of first electrode portions disposed on the first substrate, and the first electrode portions are disposed between the pixel electrodes and the first substrate, and one of the first electrode portions corresponds to and is electrically connected to one of the pixel electrodes.

3. The display panel according to claim 2, wherein a first insulating layer is provided between the first electrode portion and the pixel electrode, and the first electrode portion and the pixel electrode are electrically connected through a first electrical connection post; or, the first electrode part is arranged in contact with the pixel electrode, and a first insulating layer is arranged on one side of the first electrode part away from the pixel electrode.

4. A display panel according to any one of claims 1 to 3, wherein the auxiliary electrode comprises a second electrode portion provided on the second substrate, and the second electrode portion is provided between the common electrode and the second substrate, the second electrode portion being electrically connected to the common electrode.

5. The display panel according to claim 4, wherein the auxiliary electrode includes at least one of the second electrode portion, a second insulating layer is provided between the second electrode portion and the common electrode, or the second electrode portion is provided in contact with the common electrode.

6. The display panel according to claim 1, wherein the pixel electrode includes a first stem electrode connected to the plurality of first branch electrodes, the first stem electrode including a first wide portion and a first narrow portion alternately connected along a first direction, the first wide portion having a width larger than a width of the first narrow portion;

the common electrode comprises a second main electrode connected with a plurality of second branch electrodes, a plurality of first openings are formed in the second main electrode, and the first openings are arranged at intervals along the first direction;

7. The display panel of claim 6, wherein the first narrow portion comprises a first sub-section and a second sub-section, one end of the first sub-section is connected to one of the first wide portions, the other end of the first sub-section is connected to the second sub-section, and the other end of the second sub-section is connected to the other of the first wide portions in the first direction;

the width of the first sub-section decreases progressively from the first sub-section to the first wide portion, and the width of the second sub-section decreases progressively from the second sub-section to the first wide portion.

8. The display panel according to claim 1, wherein the width of the first branch electrode and the width of the second branch electrode are the same, and a pitch between adjacent two of the first branch electrodes and a pitch between adjacent two of the second branch electrodes are the same.

9. The display panel according to claim 1, wherein in one sub-pixel of the display panel, the pixel electrode includes a first peripheral electrode extending in a first direction, and a plurality of the first branch electrodes are connected to the first peripheral electrode; the common electrode comprises a second peripheral electrode, the second peripheral electrode extends along the first direction, a plurality of second branch electrodes are connected to the second peripheral electrode, and orthographic projection of the second peripheral electrode on the pixel electrode is at least partially overlapped with the first peripheral electrode.

10. A display terminal, characterized in that the display terminal comprises a display panel according to any of claims 1 to 9.