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Display panel, visual angle control method of display panel, and display device

A display panel, viewing angle control technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of gray scale inversion, whitening on both sides of the panel, etc.

Active Publication Date: 2020-02-21
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a display panel, a method for controlling the viewing angle of the display panel, and a display device, so as to solve the problems of whitening on both sides of the panel and grayscale inversion in the narrow viewing angle mode when viewed from the front.

Method used

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  • Display panel, visual angle control method of display panel, and display device
  • Display panel, visual angle control method of display panel, and display device
  • Display panel, visual angle control method of display panel, and display device

Examples

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no. 1 example

[0039] Please refer to Figure 1(a) to Figure 2(b), FIG. 1(a) shows a schematic structural view of the dark state of the display panel in the wide viewing angle mode according to the first embodiment of the present invention, and FIG. 1(b) shows a schematic structural view of the bright state of the display panel in the wide viewing angle mode ; FIG. 2(a) shows a schematic structural view of the display panel in a dark state in a narrow viewing angle mode, and FIG. 2(b) shows a schematic structural view of the display panel in a bright state in a narrow viewing angle mode. The display panel provided by the first embodiment of the present invention includes a first substrate 20, a first liquid crystal layer 51, a second substrate 30, a second liquid crystal layer 52 and a third substrate 40, and the first liquid crystal layer 51 is sandwiched between the first substrate 20 and the third substrate 40. The first liquid crystal cell is formed between the second substrates 30 , and...

no. 2 example

[0066] Please refer to Image 6 with Figure 7 , respectively show the structural diagrams of the display panel in the wide viewing angle mode and the narrow viewing angle mode of the second embodiment of the present invention. The difference from the first embodiment above is that the second liquid crystal layer 52 uses negative liquid crystal, and the second The initial pretilt angle of the negative liquid crystal in the liquid crystal layer 52 relative to the second substrate 30 and the third substrate 40 is between 30°-85°.

[0067] Please refer to Image 6 , in the wide viewing angle mode, the voltage difference between the first electrode 23 and the common electrode 32 is zero or small, and there is a large voltage difference between the second electrode 37 and the third electrode 41 . Please refer to Figure 7 , in the narrow viewing angle mode, there is a large voltage difference between the first electrode 23 and the common electrode 32 , and the voltage difference...

no. 3 example

[0074] Please refer to Figure 8 with Figure 9 , respectively show the structure diagrams of the display panel in the wide viewing angle mode and the narrow viewing angle mode of the third embodiment of the present invention, the difference from the above first embodiment is that the first liquid crystal layer 51 adopts negative liquid crystal, and the first The initial pretilt angle of the negative liquid crystal in the liquid crystal layer 51 relative to the first substrate 20 and the second substrate 30 is between 30°-85°.

[0075] Please refer to Figure 8 , in the wide viewing angle mode, there is a large voltage difference between the first electrode 23 and the common electrode 32 , and the voltage difference between the second electrode 37 and the third electrode 41 is zero or small. Please refer to Figure 9 , in the narrow viewing angle mode, the voltage difference between the first electrode 23 and the common electrode 32 is zero or small, and there is a large vo...

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Abstract

The invention discloses a display panel, a visual angle control method of the display panel and a display device. The display panel comprises a first substrate, a first liquid crystal layer, a secondsubstrate, a second liquid crystal layer and a third substrate; the voltage difference between a first electrode and a common electrode on two sides of the first liquid crystal layer is used for switching a first liquid crystal box to a non-peep-proof state in a wide view angle mode and switching to a peep-proof state in a narrow view angle mode; the voltage difference between a second electrode and a third electrode at two sides of the second liquid crystal layer is used for switching a second liquid crystal box to a wide-viewing-angle filtering state in a wide-viewing-angle mode and to a narrow-viewing-angle filtering state in a narrow-viewing-angle mode; and under the narrow visual angle mode, the first liquid crystal box reduces the contrast under the large visual angle, and the secondliquid crystal box reduces backlight light-emitting side luminance under the large visual angle; and the switching of wide and narrow visual angles is realized, and the whitish problem at both sidesof the panel and the gray scale reversal problem when in front view are avoided.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display panel, a viewing angle control method of the display panel, and a display device. Background technique [0002] With the development of the information age, the applications of display devices are increasingly broad and diversified. Display devices using in-plane switching (IPS) or fringe field switching (FFS) modes can achieve wider viewing angles. At the same time, in recent years, people have paid more and more attention to the protection of personal privacy. In public places, people usually hope that when they look at their mobile phones or browse their computers, the content will be kept confidential. Therefore, the display device with a single viewing angle mode can no longer meet the needs of users. In addition to the demand for a wide viewing angle, it is also necessary to be able to switch the display device to a narrow viewing angle mode when anti-pee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02F1/1347
CPCG02F1/1323G02F1/1347
Inventor 钟德镇姜丽梅沈家军茹笑莹
Owner KUSN INFOVISION OPTOELECTRONICS
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