Unlock instant, AI-driven research and patent intelligence for your innovation.

Liquid crystal display device with switchable viewing angle and driving method thereof

A technology of liquid crystal display device and driving method, applied in static indicators, instruments, nonlinear optics, etc.

Active Publication Date: 2020-02-21
KUSN INFOVISION OPTOELECTRONICS
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a liquid crystal display device to solve the problem that the existing liquid crystal display device can only switch between wide and narrow viewing angles in the left and right directions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Liquid crystal display device with switchable viewing angle and driving method thereof
  • Liquid crystal display device with switchable viewing angle and driving method thereof
  • Liquid crystal display device with switchable viewing angle and driving method thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0035] image 3 It is a schematic plan view of the liquid crystal display device in the first embodiment of the present invention, Figure 4 It is a schematic diagram of an exploded structure of the liquid crystal display device in FIG. 3 . Please refer to Figure 3 to Figure 4 , the liquid crystal display device includes a first substrate 21 , a second substrate 22 opposite to the first substrate 21 , and a liquid crystal layer 23 located between the first substrate 21 and the second substrate 22 .

[0036] The liquid crystal display device provided in this embodiment is suitable for liquid crystal display devices in modes such as in-plane switching (IPS) and fringe field switching (FFS), and the common electrode and the pixel electrode are all formed on the same substrate (ie, a thin film transistor array substrate). When an electric field for display is applied between the common electrode and the pixel electrode, the liquid crystal molecules rotate in a plane substantial...

no. 2 example

[0058] Figure 7 It is a schematic plan view of the liquid crystal display device in the second embodiment of the present invention. Please refer to Figure 7 , in this embodiment, the liquid crystal molecules in the liquid crystal layer 23 are negative liquid crystal molecules, each sub-pixel SP includes a thin film transistor 224 and a pixel electrode 227, and each pixel electrode 227 includes a first electrode portion 227a and two second electrode portions 227a. Two electrode parts 227b, the two second electrode parts 227b are connected to the first electrode part 227a, the first electrode part 227a is correspondingly arranged in the middle of each sub-pixel SP, and the two second electrode parts 227b are correspondingly arranged in the upper and lower parts of each sub-pixel SP. The thin film transistor 224 is electrically connected to the second electrode portion 227b. In other embodiments, the thin film transistor 224 may be electrically connected to the first electrod...

no. 3 example

[0062] Figure 8 It is a schematic plan view of the liquid crystal display device in the black state in the third embodiment of the present invention, Figure 9a to Figure 9c for Figure 8 Schematic diagram of the arrangement of negative liquid crystal molecules in a medium liquid crystal display device under different voltages. please combine Figure 8 and Figures 9a to 9c , each sub-pixel SP is provided with a thin film transistor 224 and a pixel electrode 227, the pixel electrode 227 is connected to the corresponding scanning line 222 and data line 223 through the thin film transistor 224, and the pixel electrode 227 includes at least one first electrode portion 227a and at least one second electrode portion 227b connected to the first electrode portion 227a.

[0063] In this embodiment, each pixel electrode 227 includes a first electrode portion 227a and a second electrode portion 227b as an example, the first electrode portion 227a is correspondingly arranged on the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A view-angle-switchable liquid crystal display device comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate is provided with a view angle control electrode, a common electrode is arranged on the second substrate, and a plurality of sub-pixels are defined by scanning lines and data lines on the second substrate; a thin film transistor and a pixel electrode are arranged in each sub-pixel. Each pixel electrode comprises at least one first electrode part and at least one second electrode part connected with the first electrode part. Each first electrode part comprises a plurality of first electrode strips, each second electrode part comprises a plurality of second electrode strips, and the first electrode strips and the second electrode stripsare perpendicular to each other. A view angle control voltage is applied to the view angle control electrode, so that a voltage difference is generated between the view angle control electrode and thecommon electrode; a vertical electric field is formed in the region of the corresponding sub-pixels between the two substrates, so that liquid crystal molecules deflect under the action of the vertical electric field, and the liquid crystal display device can be switched between a wide view angle and an omni-directional narrow view angle.

Description

technical field [0001] The invention relates to the field of display technology, and in particular to a liquid crystal display device with a switchable viewing angle and a driving method thereof. Background technique [0002] Liquid crystal display (liquid crystal display, LCD) has the advantages of good image quality, small size, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost, and occupies a dominant position in the field of flat panel display. [0003] With the continuous advancement of liquid crystal display technology, the viewing angle of the display has been expanded from about 120° to more than 160°. While enjoying the visual experience brought by the large viewing angle, people also hope to effectively protect commercial secrets and personal privacy. Avoid commercial loss or embarrassment caused by information leakage on the screen. [0004] The current display devices are gradually developing in the dire...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1343G02F1/133G02F1/13
CPCG02F1/1323G02F1/13306G02F1/134309
Inventor 柯中乔梁文龙潘佳新
Owner KUSN INFOVISION OPTOELECTRONICS