CN114415430B

CN114415430B - Display panel

Info

Publication number: CN114415430B
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: 2023-12-29
Anticipated expiration: 2042-01-26
Also published as: CN114415430A

Abstract

The embodiment of the application discloses a display panel, including: the liquid crystal display comprises a first substrate, a second substrate, a liquid crystal layer and an induction electrode, 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 electrode is arranged between two adjacent pixel electrodes, and the voltage polarity of the pixel electrodes is opposite to the voltage polarity of the induction electrode in the same picture frame; according to the method, 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 internal electric field is formed under the opposite polarity of the induction electrode and the pixel voltage, the intrinsic fringe field is amplified by utilizing the region with opposite polarity, and the electric field lines extending to the adjacent pixel electrodes are converged to the range of the induction electrode and the self-body, so that the serious problem of fringe field effect variation between the adjacent two pixels can be reduced, and the problem of cross color appearing on macroscopic display and causing cracking of image quality 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, the rotation of the liquid crystal controls the light emitting rate of the backlight under a certain pressure difference due to the existence of an electric field by adding external clamping pressure, so as to achieve the aim of display. The search for display quality, high resolution, has never been advanced, and as the resolution of an image increases, the size of individual display pixels decreases. At present, the resolution of the image in the field of high-end mobile phones is about 500, and related technologies are mature. In recent years, augmented reality head-mounted displays are increasingly exploded, and liquid crystal display screens with image resolution of 800+ are already on the market. The improvement of the image resolution brings about the reduction of the pixel size, and after the pixel size is reduced, the design size is not simply reduced synchronously, so that the conventional design is difficult to meet the requirement, and some changes are needed.

In the research and practice process of the prior art, the inventor of the application finds that in the field of the mobile phone image resolution of about 500, the crosstalk influence of adjacent electric fields can be reduced by controlling the spacing between adjacent pixel electrodes. However, in the field of augmented reality, there is no design space for adjusting the distance between adjacent pixel electrodes due to the sudden drop in pixel size in ultra-high image resolution, and when an electric field is applied, the fringe field effect between two adjacent pixels becomes severe, which affects the display brightness and contrast, and cross color appears on the macroscopic display, resulting in cracking of image quality. When the pixel size is reduced, fringe electric fields generated between adjacent pixels directly affect the arrangement of liquid crystal molecules at the pixel, so that the originally regularly arranged liquid crystal molecules are disordered, and the display effect is affected.

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

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

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

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

a first substrate;

a first insulating layer disposed on the first substrate;

the data line is arranged 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 overlapping the induction 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 induction 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 larger than that of the induction 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 adjacent to the liquid crystal layer.

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

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a display panel according to a first 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 display panel 1, the first substrate 10, the second substrate 20, the liquid crystal layer 30, the inducing electrode 40, the pixel electrode 110, the first base 160, the first insulating layer 130, the data line 120, the second insulating layer 140, the common electrode 170, the passivation layer 150, the second base 210, the black matrix 220, and the color layer 50.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described 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 embodiment of the application provides a display panel, and the detailed description is given below. The following description of the embodiments is not intended to limit the preferred embodiments.

Embodiment 1,

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

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

Alternatively, the inducing electrode 40 is disposed in the same layer as the pixel electrode 110.

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

Referring to fig. 2, the first substrate 10 includes: the first substrate 160, the first insulating layer 130, the data line 120, the second insulating layer 140, the common electrode 170, and the 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 organic materials. The first insulating layer 130 and the second insulating layer 140 may further 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 made of 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 not the inorganic material or the organic material, the inorganic material exhibits rigidity and the organic material exhibits flexibility, and the combination of the two can improve the toughness of the display panel 1 and the deformation resistance of the display panel 1.

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: the organic polymer such as imide (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 (acrylate), polyacrylate, polycarbonate or polystyrene.

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

It is understood that when the data line 120 is disposed to overlap the induction electrode 40, the aperture ratio of the panel may be improved.

Embodiment II,

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

It will be appreciated that when the inducing electrode 40 is disposed on the second substrate 20, more electric field lines of the pixel electrode 110 are converged on the inducing electrode 40 on the second substrate 20, i.e. more effective electric field lines penetrate through the liquid crystal layer 30, thereby further improving the control effect of 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, the inducing electrode 40 is disposed on the black matrix 220, 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 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 ratio of the panel is improved.

Alternatively, 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 larger 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 that the additional occupation of the display area can be avoided and the aperture ratio of the panel can be increased.

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 has described in detail a display panel provided by embodiments of the present application, and specific examples have been set forth herein to illustrate the principles and embodiments of the present application, the above examples being provided only to assist in understanding the methods of the present application and their core ideas; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.

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;

an induction electrode disposed between two adjacent pixel electrodes; in the same picture frame, the voltage polarity of the pixel electrode is opposite to the voltage polarity of the induction electrode; the data line of the first substrate is overlapped with the induction electrode;

the second substrate comprises a second base and a black matrix, the black matrix is arranged on one side of the second base facing the first substrate, and the induction electrode is arranged on one side of the black matrix facing the first substrate; the black matrix, the induction electrode and the data line are overlapped, the width of the black matrix is larger than that of the data line, and the width of the data line is larger than that of the induction electrode.

2. The display panel of claim 1, wherein the second substrate further comprises a color layer disposed on a side of the second substrate adjacent to the liquid crystal layer.