CN220691229U - Display panel and display device - Google Patents

Abstract

The application discloses a display panel and a display device, which relate to the technical field of display and comprise a color film substrate, an array substrate and a liquid crystal layer, wherein the color film substrate comprises a color film substrate body and a public electrode layer; the array substrate comprises an array substrate body, a data distribution layer and an electric field shielding layer, wherein the data distribution layer is arranged on the array substrate body and comprises a plurality of data lines; a black matrix is not arranged on one side, facing the array substrate, of the color film substrate corresponding to the data line; the electric field shielding layer is arranged between the array substrate body and the data distribution layer, and comprises a plurality of shielding electrodes, and the orthographic projection of each shielding electrode on the array substrate body is at least partially overlapped with the orthographic projection of each data line on the array substrate body; this application reduces the light leak through above design, promotes the aperture ratio.

Description

Display panel and display device

Technical Field

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

Background

Display devices such as a liquid crystal display device (Liquid Crystal Display, abbreviated as LCD) have become a necessity in life, and along with the improvement of demands, in order to improve the display quality of the display device, the problems that the opening ratio of the display device is affected and light leakage occurs due to the deviation of an array substrate and a color film substrate when the array substrate is opposite to a box are avoided, and an integration technology (Color Filter on Array, abbreviated as COA) for integrating a color filter with the array substrate is applied, wherein the COA technology is to set a black matrix and the color filter on the array substrate.

In the pixel pattern design of the COA, the black matrix is not arranged on the color film substrate side corresponding to the data line of the array substrate, but the common electrode above the data line shields the data line signal through the common electrode, so that the liquid crystal in the area is prevented from being guided to be disordered, and the design can effectively increase the aperture opening ratio.

In the pixel pattern design of the non-COA, the color film substrate side is provided with a black matrix corresponding to the data line of the array substrate, the left and right sides of the data line are provided with common electrode wiring, and the functions of the common electrode wiring are mainly two: the method is characterized in that the functions of a storage capacitor and a shielding electric field are formed, after the shielding electric field is formed, the voltage difference above Acom is zero, liquid crystal can fully stand up, liquid crystal near pixels and data lines is prevented from being guided to be disordered, meanwhile, a black matrix is arranged above the data lines, the position where the liquid crystal is disordered is shielded, light leakage is prevented, the black matrix can shield the common electrode wiring on two sides and exceed the common electrode wiring in consideration of the alignment precision of the common electrode wiring of the black matrix and an array substrate below, and the width of the black matrix is larger than or equal to the edge 5 mu m of the common electrode wiring on two sides, so that the aperture ratio of pixels can be reduced, and therefore, the method is a problem to be solved urgently.

Disclosure of Invention

The purpose of the application is to provide a display panel and a display device for reducing light leakage and improving the aperture ratio.

The application discloses a display panel, including various membrane base plate, array substrate and liquid crystal layer, various membrane base plate with array substrate sets up relatively, the liquid crystal layer sets up various membrane base plate with between the array substrate, various membrane base plate includes various membrane base plate body and public electrode layer, public electrode layer sets up various membrane base plate body orientation one side of array substrate; the array substrate comprises an array substrate body and a data distribution layer, wherein the data distribution layer is arranged on the array substrate body and comprises a plurality of data lines, and the data lines are arranged at intervals along a first direction; the array substrate further comprises an electric field shielding layer, the electric field shielding layer is arranged between the array substrate body and the data distribution layer, the electric field shielding layer comprises a plurality of shielding electrodes, orthographic projection of each shielding electrode on the array substrate body and orthographic projection of each data line on the array substrate body are at least partially overlapped, and a black matrix is not arranged on one side, facing the array substrate, of the color film substrate corresponding to the data line; wherein the voltage of the shielding electrode is equal to the voltage of the common electrode layer.

Optionally, the array substrate further includes a first pixel electrode, a second pixel electrode, a first common electrode line and a second common electrode line, the first pixel electrode is disposed on one side of the data line, the second pixel electrode is disposed on the other side of the data line, the first common electrode line corresponds to the first pixel electrode, the second common electrode line corresponds to the second pixel electrode, and the first common electrode line and the second common electrode line are integrally formed to form the shielding electrode.

Optionally, the orthographic projection of the data line on the array substrate body is within the orthographic projection of the shielding electrode on the array substrate body.

Optionally, the shielding electrode includes a first shielding electrode and a second shielding electrode that are disposed at intervals corresponding to the data line, the data line and a portion of the first shielding electrode, which is close to a side of the second shielding electrode, are disposed in an overlapping manner, and the data line and a portion of the second shielding electrode, which is close to the first shielding electrode, are disposed in an overlapping manner.

Optionally, the array substrate further includes an insulating layer, the insulating layer is disposed between the shielding electrode and the data line, the insulating layer is provided with a first groove corresponding to the data line, the data line is partially disposed in the first groove, the first groove is correspondingly disposed between the first shielding electrode and the second shielding electrode, and an area of a section of the first groove is smaller than an area of a section of the data line.

Optionally, the first groove includes a plurality of first sub-grooves, and the plurality of first sub-grooves are disposed at intervals along an extending direction of the data line.

Optionally, the insulating layer is further provided with a second groove corresponding to the data line, the second groove communicates all the first grooves, and the area of the section of the second groove is equal to the area of the section of the first groove.

Optionally, the insulating layer is further provided with a second groove corresponding to the data line, the second groove communicates all the first grooves, and the area of the section of the second groove is smaller than that of the section of the first groove.

Optionally, the shielding electrode includes a first shielding electrode and a second shielding electrode which are arranged at intervals corresponding to the data line; the array substrate further comprises an insulating layer, the insulating layer is arranged between the shielding electrode and the data line, a first groove is formed in the insulating layer corresponding to the data line, the data line is arranged in the first groove, the first shielding electrode and the second shielding electrode are respectively located on two sides of the data side, and the thickness of the first shielding electrode and the thickness of the second shielding electrode are larger than that of the data line.

The application also discloses a display device, including backlight unit and as above display panel, backlight unit sets up one side of display panel is in for display panel provides the backlight.

Compared with the prior art that in the pixel pattern design of non-COA, a black matrix is required to be arranged on the color film substrate side corresponding to the data line of the array substrate, and the liquid crystal disorder position is shielded, so that the black matrix is not arranged on the color film substrate side facing the data line of the array substrate; the array substrate is provided with an electric field shielding layer, the electric field shielding layer is arranged between the array substrate body and the data distribution layer, the electric field shielding layer comprises a plurality of shielding electrodes, the orthographic projection of each shielding electrode on the array substrate body and the orthographic projection of each data line on the array substrate body are at least partially overlapped, and the voltage of the shielding electrode is equal to the voltage of the common electrode layer; thus, an electric field is formed between the shielding electrode and the common electrode layer on the color film substrate side, the liquid crystal turbulence phenomenon nearby is shielded, the liquid crystal in the middle corresponding to the data line is turbulence, but the data line is far away from the pixel display area and is light-tight, so that the light leakage phenomenon is not caused, and the aperture ratio is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. In the drawings:

FIG. 1 is a schematic diagram of a pixel structure of a display panel of the present application;

FIG. 2 is a schematic cross-sectional view of FIG. 1 along section line A-A';

FIG. 3 is a block diagram of a display device of the present application;

fig. 4 is a schematic diagram of a pixel structure of a display panel according to a second embodiment of the present disclosure;

FIG. 5 is a schematic cross-sectional structure along the section line B-B' of FIG. 4;

fig. 6 is a schematic diagram of a pixel structure of a display panel according to a third embodiment of the present disclosure;

fig. 7 is a schematic view of a pixel structure of a display panel according to a fourth embodiment of the present disclosure;

fig. 8 is a schematic cross-sectional structure of a display panel according to a fifth embodiment of the present application.

10, a display device; 100. a display panel; 110. a color film substrate; 111. a color film substrate body; 112. a common electrode layer; 120. an array substrate; 121. an array substrate body; 122. a data distribution layer; 123. a data line; 124. an electric field shielding layer; 125. a shielding electrode; 126. a first shielding electrode; 127. a second shielding electrode; 130. a first pixel electrode; 140. a second pixel electrode; 150. an insulating layer; 151. a first groove; 152. a first sub-groove; 153. a second groove; 160. a liquid crystal layer; 200. and a backlight module.

Detailed Description

It should be understood that the terminology, specific structural and functional details disclosed herein are merely representative for purposes of describing particular embodiments, but that the application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. In addition, terms of the azimuth or positional relationship indicated by "upper", "lower", "left", "right", "vertical", "horizontal", etc., are described based on the azimuth or relative positional relationship shown in the drawings, and are merely for convenience of description of the present application, and do not indicate that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Fig. 1 is a schematic view of a pixel structure of a display panel of the present application, fig. 2 is a schematic view of a cross-sectional structure of the display panel of fig. 1 along a cross-sectional line A-A', and as can be seen in conjunction with fig. 1-2, the present application discloses a display panel 100, including a color film substrate 110, an array substrate 120, and a liquid crystal layer 160, wherein the color film substrate 110 is disposed opposite to the array substrate 120, the liquid crystal layer 160 is disposed between the color film substrate 110 and the array substrate 120, the color film substrate 110 includes a color film substrate body 111 and a common electrode layer 112, and the common electrode layer 112 is disposed on a side of the color film substrate body 111 facing the array substrate 120; the array substrate 120 includes an array substrate body 121 and a data distribution layer 122, the data distribution layer 122 is disposed on the array substrate body 121, the data distribution layer 122 includes a plurality of data lines 123, and the plurality of data lines 123 are disposed at intervals along a first direction; the array substrate 120 further includes an electric field shielding layer 124, the electric field shielding layer 124 is disposed between the array substrate body 121 and the data distribution layer 122, the electric field shielding layer 124 includes a plurality of shielding electrodes 125, a front projection of each shielding electrode 125 on the array substrate body 121 and a front projection of each data line 123 on the array substrate body 121 at least partially overlap, and a black matrix is not disposed on a side of the color film substrate 110 facing the array substrate 120 corresponding to the data line 123; wherein the voltage of the shielding electrode 125 is equal to the voltage of the common electrode layer 112.

Compared with the prior art that in the pixel pattern design of non-COA, the black matrix is required to be arranged on the color film substrate 110 side corresponding to the data line 123 of the array substrate 120, and the liquid crystal disorder position is shielded, so that the black matrix is not arranged on the color film substrate 110 facing the data line 123 on the side of the array substrate 120; the array substrate 120 is provided with an electric field shielding layer 124, the electric field shielding layer 124 is arranged between the array substrate body 121 and the data distribution layer 122, the electric field shielding layer 124 comprises a plurality of shielding electrodes 125, the orthographic projection of each shielding electrode 125 on the array substrate body 121 is at least partially overlapped with the orthographic projection of each data line 123 on the array substrate body 121, and the voltage of the shielding electrode 125 is equal to the voltage of the common electrode layer 112; in this way, an electric field is formed between the shielding electrode 125 and the common electrode layer 112 on the color film substrate 110 side, and the liquid crystal in the vicinity of the shielding electrode is disturbed, and the liquid crystal in the middle corresponding to the data line 123 is disturbed, but is far away from the pixel display area, and the data line 123 is metal and light-tight, so that light leakage is not caused, and the aperture ratio is improved.

Fig. 3 is a schematic block diagram of a display device of the present application, and as shown in fig. 3, the present application further discloses a display device 10, including a backlight module 200 and a display panel 100, where the backlight module 200 is disposed on one side of the display panel 100, and provides a backlight source for the display panel 100. The display device 10 assembled by the display panel 100 has a high pixel aperture ratio of the display panel 100, and improves the display quality. The display device 10 may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, etc.

In the lcd panel 100, there is no voltage difference between the pixel electrode and the common electrode, but the voltage on the data line 123 is periodically changed, so that the pixel electrode and the common electrode inevitably generate an electric field with the data line 123, the direction of the electric field is perpendicular to the direction of the data line 123, and the initial alignment direction of the liquid crystal molecules in the liquid crystal layer 160 is along the direction of the data line 123, so that the electric field generated between the pixel electrode and the common electrode and the data line 123 inevitably affects the liquid crystal molecules, resulting in deflection of the liquid crystal molecules, and light leakage occurs. Therefore, the shielding electrode 125 is provided to offset or shield an electric field generated between a portion of the pixel electrode (and the common electrode) and the data line 123, thereby shielding the data line 123 and effectively improving a light leakage problem.

Wherein the shielding electrode 125 can have a variety of designs, the present application is described in detail below with reference to the drawings and alternative embodiments.

First embodiment:

as shown in fig. 2, the array substrate 120 further includes a first pixel electrode 130 and a second pixel electrode 140, where the first pixel electrode 130 is disposed on one side of the data line 123, the second pixel electrode 140 is disposed on the other side of the data line 123, and the first common electrode line corresponding to the first pixel electrode 130 and the second common electrode line corresponding to the second pixel electrode 140 are integrally formed to form the shielding electrode 125.

That is, only one shielding electrode 125 is disposed corresponding to the data line 123, where the orthographic projection of the data line 123 on the array substrate body 121 is within the orthographic projection of the shielding electrode 125 on the array substrate body 121, at this time, the shielding electrode 125 covers the data line 123, and as can be seen from fig. 2, the width of the shielding electrode 125 is greater than the width of the data line 123, so that the range of the shielding electric field formed by the whole shielding electrode 125 and the common electrode layer 112 on the color film substrate 110 side is larger, and there is no disorder problem of the liquid crystal near the pixel electrode, so as to prevent the light leakage problem.

The shielding electrode 125 is made of transparent conductive oxide or metal. For example: indium tin oxide TIO, or metallic silver of a relatively thin thickness, etc.

Second embodiment:

fig. 4 is a schematic diagram of a pixel structure of a display panel according to a second embodiment of the present application, and fig. 5 is a schematic diagram of a cross-sectional structure of fig. 4 along a cross-sectional line B-B', as shown in fig. 4-5, as a second embodiment of the present application, unlike the first embodiment, the shielding electrode 125 includes a first shielding electrode 126 and a second shielding electrode 127 disposed at intervals corresponding to the data line 123, the data line 123 and a portion of the first shielding electrode 126 near a portion of the second shielding electrode 127 are disposed in an overlapping manner, and the data line 123 and a portion of the second shielding electrode 127 near a portion of the first shielding electrode 126 are disposed in an overlapping manner. Gaps are not formed between the two sides of the data line 123 and the first shielding electrode 126 and the second shielding electrode 127, respectively, so as to avoid light leakage caused by light passing through the gaps on the two sides of the data line 123.

The array substrate 120 further includes an insulating layer 150, where the insulating layer 150 is disposed between the shielding electrode 125 and the data line 123, the insulating layer 150 may dig a first groove 151 corresponding to the data line 123, the data line 123 is partially disposed in the first groove 151, the first groove 151 is correspondingly disposed between the first shielding electrode 126 and the second shielding electrode 127, and an area of a cross section of the first groove 151 is smaller than an area of a cross section of the data line 123.

The insulating layer 150 is further provided with a second groove 153 corresponding to the data line 123, the second groove 153 communicates all the first grooves 151, and the area of the cross section of the second groove 153 is equal to the area of the cross section of the first groove 151. I.e. an entire groove is formed in the insulating layer 150 and corresponds to the portion of the data line 123.

With the above design, on one hand, the occupied area of the data line 123 in the transverse direction is relatively small, and the data line 123 can be made to be slightly narrower, so that the whole volume can be relatively small; on the other hand, if the size of the data line 123 in the lateral direction is not changed, and the data line 123 outside the groove is added to the data line 123 in the groove, the capacitance of the data line 123 is reduced, so that the capacitive load of the data line 123 can be reduced by the shielding electrode 125, and the phenomenon of liquid crystal disturbance at the edge of the data line 123 is not caused, so that the shielding effect is not good.

Third embodiment:

fig. 6 is a schematic view of a pixel structure of a display panel according to a third embodiment of the present application, as shown in fig. 6, in which, as a third embodiment of the present application, the first groove 151 includes a plurality of first sub-grooves 152, and the plurality of first sub-grooves 152 are disposed at intervals along an extending direction of the data line 123. The distance between every two first sub-grooves 152 is equal to or greater than 2 μm, and the width of each first sub-groove 152 can be equal to or greater than 2 μm, so that the sizes of the first sub-grooves 152 can be correspondingly set according to the sizes of the display panel 100 and the lengths of the data lines 123, thereby properly reducing the capacitance of the data lines 123 and achieving the effect of improving the aperture ratio.

Fourth embodiment:

fig. 7 is a schematic diagram of a pixel structure of a display panel according to a fourth embodiment of the present application, as shown in fig. 7, as a third embodiment of the present application, different from the second and third embodiments, the insulating layer 150 is further provided with a second groove 153 corresponding to the data line 123, the second groove 153 communicates all the first grooves 151, and an area of a cross section of the second groove 153 is smaller than an area of a cross section of the first groove 151. That is, the groove penetrates through the insulating layer 150, and in the whole groove, the first groove 151 is wider, and the second groove 153 is relatively narrower, so that the data line 123 can be more accommodated in the groove, and the capacitance of the data line 123 can be properly reduced, thereby achieving the effect of improving the aperture ratio.

Fifth embodiment:

fig. 8 is a schematic cross-sectional structure of a display panel according to a fifth embodiment of the present application, as shown in fig. 8, as a third embodiment of the present application, unlike the first embodiment, the array substrate 120 further includes an insulating layer 150, the insulating layer 150 is disposed between the shielding electrode 125 and the data line 123, the insulating layer 150 is provided with a first groove 151 corresponding to the data line 123, the data line 123 is disposed in the first groove 151, and the thickness of the shielding electrode 125 is greater than the thickness of the data line 123. At this time, the cross section of the shielding electrode 125 forms a concave structure, the data line 123 is formed on the array substrate 120 into a three-surrounding structure, the range of the shielding electric field formed between the two sides of the data line 123 and the common electrode layer 112 on the color film substrate 110 side is larger, and the liquid crystal close to the pixel electrode has no disorder problem, so that the light leakage problem at the position can be prevented, and the concave structure also has no gap in the groove corresponding to the data line 123, so that the light leakage problem can be avoided at the position, and the whole shielding effect is good.

It should be noted that, the inventive concept of the present application may form a very large number of embodiments, but the application documents have limited space and cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features may be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the original technical effects will be enhanced. The foregoing is a further detailed description of the present application in connection with specific alternative embodiments, and it is not intended that the practice of the present application be limited to such descriptions. It should be understood that those skilled in the art to which the present application pertains may make several simple deductions or substitutions without departing from the spirit of the present application, and all such deductions or substitutions should be considered to be within the scope of the present application.

Claims (10)

1. The display panel comprises a color film substrate, an array substrate and a liquid crystal layer, wherein the color film substrate and the array substrate are oppositely arranged, the liquid crystal layer is arranged between the color film substrate and the array substrate, the color film substrate comprises a color film substrate body and a public electrode layer, and the public electrode layer is arranged on one side of the color film substrate body, which faces the array substrate; the array substrate comprises an array substrate body and a data distribution layer, wherein the data distribution layer is arranged on the array substrate body and comprises a plurality of data lines, and the data lines are arranged at intervals along a first direction; it is characterized in that the method comprises the steps of,

a black matrix is not arranged on one side, facing the array substrate, of the color film substrate corresponding to the data line; and

the array substrate further comprises an electric field shielding layer, the electric field shielding layer is arranged between the array substrate body and the data distribution layer, the electric field shielding layer comprises a plurality of shielding electrodes, and the orthographic projection of each shielding electrode on the array substrate body and the orthographic projection of each data line on the array substrate body are at least partially overlapped;

wherein the voltage of the shielding electrode is equal to the voltage of the common electrode layer.

2. The display panel according to claim 1, wherein the array substrate further comprises a first pixel electrode and a second pixel electrode, the first pixel electrode is disposed on one side of the data line, the second pixel electrode is disposed on the other side of the data line, a first common electrode line corresponding to the first pixel electrode is integrally formed with a second common electrode line corresponding to the second pixel electrode, and the shielding electrode is formed.

3. The display panel of claim 2, wherein the orthographic projection of the data lines on the array substrate body is within the orthographic projection of the shielding electrodes on the array substrate body.

4. The display panel according to claim 1, wherein the shielding electrode includes a first shielding electrode and a second shielding electrode disposed at an interval corresponding to the data line, the data line is disposed to partially overlap a side of the first shielding electrode adjacent to the second shielding electrode, and the data line is disposed to partially overlap a side of the second shielding electrode adjacent to the first shielding electrode.

5. The display panel according to claim 4, wherein the array substrate further comprises an insulating layer disposed between the shielding electrode and the data line, the insulating layer being provided with a first groove corresponding to the data line, the data line being partially disposed in the first groove, the first groove being correspondingly disposed between the first shielding electrode and the second shielding electrode, and an area of a cross section of the first groove being smaller than an area of a cross section of the data line.

6. The display panel of claim 5, wherein the first groove comprises a plurality of first sub-grooves spaced apart along an extending direction of the data line.

7. The display panel according to claim 5, wherein the insulating layer is further provided with a second groove corresponding to the data line, the second groove communicates all of the first grooves, and the area of the cross section of the second groove is equal to the area of the cross section of the first groove.

8. The display panel according to claim 5, wherein the insulating layer is further provided with a second groove corresponding to the data line, the second groove communicates all of the first grooves, and a cross-sectional area of the second groove is smaller than a cross-sectional area of the first groove.

9. The display panel according to claim 2, wherein the array substrate further comprises an insulating layer, the insulating layer is disposed between the shielding electrode and the data line, the insulating layer is provided with a first groove corresponding to the data line, the data line is disposed in the first groove, and a thickness of the shielding electrode is greater than a thickness of the data line.

10. A display device, comprising a backlight module and the display panel according to claim 9, wherein the backlight module is disposed on one side of the display panel, and provides a backlight source for the display panel.