Hyundai Electronics Industries Co. Ltd.

Bong Gyu Rho

Seung Hee Lee

In Cheol Park

Hyang Yul Kim

Jae Geon You

Han Jun Park

Jang Sick Park

Wan Yong Choi

Joon Heon Kim

Soon Ho Baek

Seong Jun An

Disclosed is an LCD preventing color shift and simultaneously improving the characteristics of viewing angle. The LCD comprises a substrate and a common electrode and a pixel electrode having same spiral shape formed on the substrate and being opposed each other, wherein an electric field formed between the common electrode and the pixel electrode is radial shape.

Liquid crystal display having wide viewing angle without color shift having annular pixel and counter electrodes

In a liquid crystal display having a pixel electrode and a counter electrode respectively formed on a lower substrate and a upper substrate, the electric field in ellipse form, is symmetrical between the pixel electrode and the counter electrode by forming an opening part in the pixel electrode or the counter electrode. Accordingly, the viewing angle feature, when voltage is applied to the liquid crystal display is enhanced.

Liquid crystal display with improved viewing angle and transmittance

A liquid crystal display preventing color shift is provided. The liquid crystal display comprises: a liquid crystal layer having a plurality of liquid crystal molecules; a lower substrate disposed at one side of the liquid crystal layer and having a sub pixel defined by crossing a gate bus line and a data bus line at an interface with said liquid crystal layer and further having a counter electrode and a pixel electrode for driving the liquid crystal molecules within each sub pixel; and an upper substrate disposed at the other side of the liquid crystal layer and having a color filter, wherein an electric field parallel to the surface of the substrate and the gate bus line and an electric field parallel to the data bus line are simultaneously formed when a voltage is applied to the counter electrode and the pixel electrode.

Liquid crystal display device

A polymer dispersed liquid crystal display device is disclosed. A polymer dispersed liquid crystal display device of the present invention includes a pair of substrates inside which electrodes are formed, respectively. The substrates are disposed to be opposite to each other and to be spaced to a cell gap. A liquid crystal polymer network and liquid crystal droplets which are phase separated from each other, are interposed between the substrates. The liquid crystal polymer network is perpendicularly arranged to the planes of the substrates regardless of presence or absence of electrical field. The liquid crystal droplets includes a plurality of liquid crystal molecules and are dispersed in the liquid crystal polymer network. The liquid crystal polymer network has a birefringe index which is similar to that of the liquid crystal. The liquid crystal polymer network is that a liquid crystal polymer having a higher glass transition temperature than an operation temperature of the liquid crystal is perpendicularly arranged to the planes of the substrate by a voltage of 1 to 100 V and hardened as it is. Preferably, the liquid crystal polymer network is that a liquid crystal monomer having UV hardening property is perpendicularly arranged to the planes of the substrates and harden as it is.

Polymer dispersed liquid crystal display device

The pixel electrode and the counter electrode are devised so that an electric field generated between the counter electrode and the pixel electrode in one unit pixel region is parallel to the gate bus line and an electric field in another unit pixel regions adjacent to the one unit pixel region in left, right, upper and lower directions is vertical to the gate bus line. Therefore, the color shift of the liquid crystal display can be prevented.

Growing community of inventors

Suwon, South Korea

Bong Gyu Rho