CN114415430A

CN114415430A - Display panel

Info

Publication number: CN114415430A
Application number: CN202210095712.0A
Authority: CN
Inventors: 余文强; 刘广辉
Original assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-04-29
Anticipated expiration: 2042-01-26
Also published as: CN114415430B

Abstract

The embodiment of the application discloses a display panel includes: the liquid crystal display panel comprises a first substrate, a second substrate, a liquid crystal layer and induction electrodes, wherein the first substrate comprises a plurality of pixel electrodes, the second substrate is arranged opposite to the first substrate, the liquid crystal layer is arranged between the first substrate and the second substrate, the induction electrodes are arranged between two adjacent pixel electrodes, and the voltage polarity of the pixel electrodes is opposite to that of the induction electrodes in the same picture frame; according to the method, the induction electrode is arranged between the adjacent pixel electrodes, the polarity of the voltage on the induction electrode is opposite to that of the pixel voltage, an amplified intrinsic fringe inner electric field is formed under the polarity of the induction electrode opposite to that of the pixel voltage, the intrinsic fringe field is amplified by utilizing the region with the opposite polarity, and the electric field lines extending to the adjacent pixel electrodes are converged into the range of the induction electrode and the intrinsic fringe field, so that the serious problem of fringe field effect strain between the two adjacent pixels can be reduced, and the problem of image quality cracking caused by cross color on macroscopic display is solved.

Description

Display panel

Technical Field

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

Background

In the field of low-temperature polysilicon, external clamping is added, and the rotation of liquid crystal controls the light-emitting rate of backlight under a certain pressure difference due to the existence of an electric field, so that the purpose of display is achieved. The pursuit of display quality and the development of high resolution have never been completed, and as the image resolution is higher, the size of a single display pixel is smaller. At present, the image resolution in the field of high-end mobile phones is about more than 500, and the related technology is mature. In recent years, augmented reality head-mounted displays have been exploded, and liquid crystal displays with image resolution of 800+ have appeared on the market. The improvement of the image resolution brings the reduction of the pixel size, and after the size is reduced, the design size is not simply reduced synchronously, and the conventional design is difficult to meet the requirements and needs to be changed.

In the process of research and practice of the prior art, the inventor of the application finds that in the field of about 500 image resolutions of mobile phones, the crosstalk influence of adjacent electric fields can be reduced by controlling the distance between adjacent pixel electrodes. However, in the field of augmented reality, there is no design space for adjusting the spacing between adjacent pixel electrodes due to the abrupt decrease of pixel size in ultrahigh image resolution, and when an electric field is applied, the fringe field effect between two adjacent pixels becomes severe, which will affect the display brightness and contrast, and the macroscopic display will also show cross color, resulting in the degradation of image quality. When the pixel size is reduced, the fringe electric field generated between adjacent pixels directly affects the arrangement of the liquid crystal molecules at the position, so that the liquid crystal molecules which are originally regularly arranged are disordered, the display effect is affected, and therefore the problem of electric field crosstalk between adjacent pixel electrodes can be solved by a design without changing the pixel electrode distance.

Disclosure of Invention

The embodiment of the application provides a display panel, which can effectively improve the problem of electric field crosstalk between adjacent pixel electrodes under the condition of not changing the distance between the adjacent pixel electrodes.

A display panel, comprising:

a first substrate including a plurality of pixel electrodes;

the second substrate is arranged opposite to the first substrate;

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

an inducing electrode disposed between adjacent two of the pixel electrodes; in the same frame, the voltage polarity of the pixel electrode is opposite to the voltage polarity of the inducing electrode.

Optionally, in some embodiments of the present application, the inducing electrode is formed on the first substrate.

Optionally, in some embodiments of the present application, the inducing electrode and the pixel electrode are disposed in the same layer.

Optionally, in some embodiments of the present application, the first substrate includes:

a first substrate;

a first insulating layer disposed on the first substrate;

a data line disposed on the first insulating layer;

a second insulating layer covering the data line;

a common electrode disposed on the second insulating layer;

a passivation layer disposed on the common electrode;

wherein the inducing electrode and the pixel electrode are disposed on the passivation layer.

Optionally, in some embodiments of the present application, the data line is disposed to overlap with the inducing electrode.

Optionally, in some embodiments of the present application, the inducing electrode is formed on a side of the second substrate facing the first substrate.

Optionally, in some embodiments of the present application, the second substrate includes: a second substrate and a black matrix; the black matrix is arranged on one side of the second substrate facing the first substrate; the induction electrode is arranged on one side of the black matrix facing the first substrate; the inducing electrode overlaps the black matrix.

Optionally, in some embodiments of the present application, the black matrix, the inducing electrode and the data line are disposed to overlap.

Optionally, in some embodiments of the present application, a width of the black matrix is greater than a width of the data line; the width of the data line is greater than the inducing electrode.

Optionally, in some embodiments of the present application, the second substrate further includes a color layer disposed on a side of the second substrate close to the liquid crystal layer.

The embodiment of the application adopts: the induction electrode is arranged between the adjacent pixel electrodes, the voltage on the induction electrode is opposite to the polarity of the pixel voltage, an amplified intrinsic fringe inner electric field is formed under the polarity of the induction electrode opposite to the pixel voltage, the intrinsic fringe field is amplified by utilizing the region with the opposite electric polarity, and the electric field lines extending to the adjacent pixel electrodes are converged into the range of the induction electrode and the intrinsic fringe field, so that the problems of serious fringe field effect strain between the two adjacent pixels, influence on display brightness and contrast, cross color on macroscopic display and image quality cracking can be effectively solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

fig. 2 is a schematic structural diagram of a display panel according to a second embodiment of the present application.

Description of the drawings: the liquid crystal display device includes a display panel 1, a first substrate 10, a second substrate 20, a liquid crystal layer 30, an inducing electrode 40, a pixel electrode 110, a first substrate 160, a first insulating layer 130, a data line 120, a second insulating layer 140, a common electrode 170, a passivation layer 150, a second substrate 210, a black matrix 220, and a color layer 50.

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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.

The embodiments of the present application provide a display panel, which is described in detail below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.

The first embodiment,

Referring to fig. 1, a display panel 1 includes: the liquid crystal display device comprises a first substrate 10, a second substrate 20, a liquid crystal layer 30 and an induction electrode 40.

The first substrate 10 includes a plurality of pixel electrodes 110. The second substrate 20 is disposed opposite to the first substrate 10. The liquid crystal layer 30 is disposed between the first substrate 10 and the second substrate 20. The inducing electrode 40 is disposed between two adjacent pixel electrodes 110. In the same frame, the voltage polarity of the pixel electrode 110 is opposite to the voltage polarity of the inducing electrode 40.

It can be understood that, the inducing electrode 40 is disposed between the adjacent pixel electrodes 110, the voltage on the inducing electrode 40 is opposite to the polarity of the pixel voltage, the inducing electrode 40 forms an amplified intrinsic fringe internal electric field with the polarity opposite to the pixel voltage, the intrinsic fringe field is amplified by the region with opposite electric polarity, and the electric field lines extending to the adjacent pixel electrodes 110 converge into the range of the inducing electrode 40 and the self, so that the serious problem of fringe field effect strain between the two adjacent pixels can be reduced; the display brightness and the contrast are improved, and the problem of image quality cracking caused by color cross on macroscopic display is solved.

Alternatively, the induction electrode 40 is formed on the first substrate 10.

Optionally, the inducing electrode 40 and the pixel electrode 110 are disposed in the same layer.

It is understood that when the inducing electrode 40 is formed on the first substrate 10 and disposed at the same layer as the pixel electrode 110, an additional mask can be avoided.

Referring to fig. 2, the first substrate 10 includes: a first substrate 160, a first insulating layer 130, a data line 120, a second insulating layer 140, a common electrode 170, and a passivation layer 150.

The first insulating layer 130 is disposed on the first substrate 160. The data line 120 is disposed on the first insulating layer 130. The second insulating layer 140 covers the data line 120. The common electrode 170 is disposed on the second insulating layer 140. The passivation layer 150 is disposed on the common electrode 170. Wherein the inducing electrode 40 and the pixel electrode 110 are disposed on the passivation layer 150.

It is understood that the first insulating layer 130 and the second insulating layer 140 may be both inorganic materials. The first insulating layer 130 and the second insulating layer 140 may be both organic materials. The first and second insulating

layers

130 and 140 may also be: the first insulating layer 130 is an inorganic material, the second insulating layer 140 is an organic material or the first insulating layer 130 is an organic material, and the second insulating layer 140 is an inorganic material. When the first insulating layer 130 and the second insulating layer 140 are both inorganic materials, the first insulating layer 130 and the second insulating layer 140 have strong bonding force and are not easily peeled off. When the first insulating layer 130 and the second insulating layer 140 are both organic materials, the first insulating layer 130 and the second insulating layer 140 have better toughness. When the first insulating layer 130 and the second insulating layer 140 are different from each other, the inorganic material is rigid, and the organic material is flexible, so that the toughness of the display panel 1 and the deformation resistance of the display panel 1 can be improved.

The inorganic materials selected for the first insulating layer 130 and the second insulating layer 140 include: silicon oxide, silicon oxynitride, silicon nitride, aluminum oxide.

The organic materials selected for the first insulating layer 130 and the second insulating layer 140 include: an organic polymer such as Polyimide (PI) or acryl (acryl), and in some embodiments, the organic material selected from the first insulating layer 130 and the second insulating layer 140 further includes acrylate, polyacrylate, polycarbonate, or polystyrene.

Alternatively, the data line 120 is disposed to overlap the inducing electrode 40.

It can be understood that when the data line 120 is disposed to overlap the inducing electrode 40, the aperture ratio of the panel can be increased.

Example II,

Referring to fig. 2, the display panel 1 of the second embodiment and the display panel 1 of the first embodiment are different in that: the induction electrode 40 is formed on a side of the second substrate 20 facing the first substrate 10. The induction electrode 40 is formed on the second substrate 20.

The induction electrode 40 is formed on a side of the second substrate 20 facing the first substrate 10. The induction electrode 40 is formed on the second substrate 20.

It can be understood that when the inducing electrode 40 is disposed on the second substrate 20, the electric field lines of the pixel electrode 110 are more converged on the inducing electrode 40 on the second substrate 20, i.e. more effective electric field lines will pass through the liquid crystal layer 30, further improving the control effect on the liquid crystal deflection.

The second substrate 20 includes: a second substrate 210 and a black matrix 220. The black matrix 220 is disposed on a side of the second base 210 facing the first substrate 10. The inducing electrode 40 is disposed at a side of the black matrix 220 facing the first substrate 10. The inducing electrode 40 overlaps the black matrix 220.

It can be understood that, since the black matrix 220 is opaque, and the inducing electrode 40 is disposed on the black matrix 220, the area of the black matrix 220 can be fully utilized, the light emitting area of the display panel 1 is not occupied additionally, and the aperture ratio of the display panel 1 is effectively improved.

Alternatively, in some embodiments, the black matrix 220, the inducing electrode 40 and the data line 120 are disposed to overlap.

Similarly, the black matrix 220, the inducing electrode 40 and the data line 120 are overlapped, so that the area of the black matrix 220 can be fully utilized, the light emitting area of the display panel 1 is not additionally occupied, and the aperture opening ratio of the panel is improved.

Optionally, in some embodiments, the width of the black matrix 220 is greater than the width of the data line 120; the data line 120 has a width greater than that of the inducing electrode 40.

Similarly, the width of the black matrix 220 is greater than the width of the data line 120 and greater than the width of the inducing electrode 40, so as to avoid occupying an additional area of the display region and improve the aperture ratio of the panel.

As shown in fig. 2, the second substrate 20 further includes a color layer 50, and the color layer 50 is disposed on a side of the second substrate 210 adjacent to the liquid crystal layer 30.

The foregoing detailed description is directed to a display panel provided in an embodiment of the present application, and specific examples are applied herein to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A display panel, comprising:

a first substrate including a plurality of pixel electrodes;

the second substrate is arranged opposite to the first substrate;

2. The display panel according to claim 1, wherein the inducing electrode is formed on the first substrate.

3. The display panel of claim 2, wherein the inducing electrode is disposed in the same layer as the pixel electrode.

4. The display panel according to claim 3, wherein: the first substrate includes:

a first substrate;

a first insulating layer disposed on the first substrate;

a data line disposed on the first insulating layer;

a second insulating layer covering the data line;

a common electrode disposed on the second insulating layer;

a passivation layer disposed on the common electrode;

5. The display panel according to claim 4, wherein the data line overlaps with the inducing electrode.

6. The display panel according to claim 4, wherein the inducing electrode is formed on a side of the second substrate facing the first substrate.

7. The display panel according to claim 6, wherein the second substrate comprises: a second substrate and a black matrix; the black matrix is arranged on one side of the second substrate facing the first substrate; the induction electrode is arranged on one side of the black matrix facing the first substrate; the inducing electrode overlaps the black matrix.

8. The display panel according to claim 7, wherein the black matrix, the inducing electrode, and the data line are disposed to overlap.

9. The display panel according to claim 8, wherein the black matrix has a width larger than that of the data line; the width of the data line is greater than the inducing electrode.

10. The display panel according to claim 7, wherein the second substrate further comprises a color layer disposed on a side of the second substrate adjacent to the liquid crystal layer.