Liquid crystal display device

Abstract

The invention discloses a liquid crystal display device which comprises a first baseplate, a second baseplate arranged opposite to the first baseplate, and a liquid crystal layer clamped between the first baseplate and the second baseplate, wherein the first baseplate comprises a plurality of scanning lines and a plurality of data cables, which are crossed to one another to define out a plurality of pixel areas; each pixel area is composed of pixel electrodes and a plurality of first public electrodes in electric connection, and the pixel electrodes and the first public electrodes are positioned on different layers; the second baseplate comprises touch-control sensing electrodes, as well as a black matrix and a colour layer both arranged on the touch-control sensing electrodes; and the liquid crystal molecules of the liquid crystal layer are negative liquid crystal molecules. The liquid crystal display device integrates an embedded touch control board technology and a wide visual angle, and has a wider visual angle and higher permeability.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display device. Background technique [0002] Thin Film Transistor-Liquid Crystal Display (TFT-LCD) is widely used in the field of flat panel display due to its low radiation, thin thickness and low power consumption. Since the principle of LCD is to control the spatial direction of liquid crystal molecules through the electric field and change the vibration direction of the incident light from the backlight, if the screen is viewed from an oblique angle, color distortion may occur, which limits the viewing angle of the LCD. The industry tries to improve the viewing angle characteristics of liquid crystal displays through various technologies. Several wide viewing angle technologies have been proposed, such as MVA (Multi-domain Vertical Alignment, multi-domain vertical alignment) mode, OCB (Optically Compensated Bend / Optically Compensated Birefring...

AI Technical Summary

Problems solved by technology

Many TFT-LCD manufacturers have invested heavily in this technology, but its technology is limited. Most of them use resistance, capacitance or light sensing. The wiring on the electrode structure is relatively complicated and the yield rate is low. , affecting the aperture ratio, especially poor compatibility with wide viewing angle technology

[0004] For the resistive sensor (Resistive Sensor) method, since the upper substrate must be easy to bend, the density of the main photo spacer (Main Photo Spacer, Main PS) used on the upper substrate is relatively small, and a relatively small force can be used. Make the upper substrate bend, increase the sensitivity, but if the main photo-spacer density is too low, the display quality of the panel will be affected

[0005] For the optical sensor method, its sensitivity is high, but in a relatively dark environment, the sensitivity of the touchpad is not high, and the effect is not good

[0006] For the capacitive sensor method, it is limited in IPS and FFS wide viewing angle display modes, and the pixel area needs to be wired for the touch panel, which sacrifices the aperture ratio, reduces the yield rate, and increases the cost

[0007] In addition, the wide viewing angle architecture in IPS and FFS mode requires a layer of ITO (Indium Tin Oxide, Indium Tin Oxide) transparent material on the outer surface of the color filter (CF) end to prevent static moire (mura), while the small size Liquid crystal cells (Cell) now need to be thinned, and then go back to the factory to coat the ITO layer. The thinned glass is very brittle and easy to break. In terms of time, you have to go to the thinning factory first and then go back to the CF factory to coat ITO before returning to the factory. , the time is relatively long

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