Structure of electrode array in borderline electric field type liquid crystal display

A technology of liquid crystal display and array structure, applied in instruments, nonlinear optics, optics, etc., can solve the problems of reduced operating voltage light transmittance and wide viewing angle, difficult to manufacture liquid crystal materials, high operating voltage, etc., to improve the display The effect of quality, reduced power consumption, and fast response time

Inactive Publication Date: 2007-12-05
TPO DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned existing FFS-LCD requires a relatively high operating voltage (>6V rms ), and it is better to use negative permittivity anisotropy (Δε<0) liquid crystal material, but negative permittivity anisotropy liquid crystal material is not easy to manufacture and has the disadvantage of high viscosity
Therefore, in order to reduce the operating voltage and at the same time have fast response time (fast response time), high light transmittance and wide viewing angle characteristics, there is still room for improvement in the design of the electrode array structure in the traditional FFS-LCD.

Method used

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  • Structure of electrode array in borderline electric field type liquid crystal display
  • Structure of electrode array in borderline electric field type liquid crystal display
  • Structure of electrode array in borderline electric field type liquid crystal display

Examples

Experimental program
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no. 1 example

[0084] Please refer to the electrode array structure of the T-FFS LCD of the present invention in Fig. 4, the conditions adopted in the first embodiment are a=2 μm, h=1 μm, the first included angle α1 is 45 degrees, and the second included angle α2 is 45 degrees Degree, and the gap distance d (cell gap) of the liquid crystal layer 570 shown in FIG. 5B is 5 μm. In addition, the first embodiment adopts liquid crystal molecules with positive permittivity anisotropy (Δε>0), such as the MLC-6692 type liquid crystal material manufactured by Merk Company, and the parameters of the liquid crystal material include: complex refractive index (birefringence) Δn =0.085, dielectric anisotropy Δε=10.3 and torsional viscosity γ 1 = 0.1 Pas.. In addition, the initial state of the liquid crystal molecules is homogeneously arranged with an azimuth angle of 10 degrees and a pretilt angle of 2 degrees, so that the threshold voltage of the T-FFS LCD of this embodiment is about 1V. In addition, si...

no. 2 example

[0091] Please refer to the electrode array structure of the T-FFS LCD of the present invention in Fig. 4, the conditions adopted in the second embodiment are a=3 μm, h=1 μm, the first included angle α1 is 45 degrees, and the second included angle α2 is 45 degrees, and the gap distance d (cell gap) of the liquid crystal layer 570 shown in FIG. 5B is 4.8 μm. In addition, the second embodiment adopts liquid crystal molecules with positive permittivity anisotropy (Δε>0), such as the MLC-6692 type liquid crystal material manufactured by Merk Company, and the parameters of the liquid crystal material include: complex refractive index (birefringence) Δn =0.085, dielectric anisotropy Δε=10.3 and torsional viscosity γ 1 = 0.1 Pas.. In addition, the initial state of the liquid crystal molecules is homogeneously arranged with an azimuth angle of 10 degrees and a pretilt angle of 2 degrees, so that the threshold voltage of the T-FFS LCD of this embodiment is less than 1V. In addition, s...

no. 3 example

[0098] Please refer to the electrode array structure of the T-FFS LCD of the present invention in Fig. 4, the conditions adopted in the third embodiment are a=3 μm, h=1 μm, the first included angle α1 is 45 degrees, and the second included angle α2 is 45 degrees, and the gap distance d (ie cell gap) of the liquid crystal layer 570 shown in FIG. 5B is 4 μm. In addition, the third embodiment adopts liquid crystal molecules with negative permittivity anisotropy (Δε1 = 0.16 Pas.. In the initial state, the liquid crystal molecules are homogeneously arranged with an azimuth angle of 80 degrees and a pretilt angle of 2 degrees. In addition, since this embodiment uses negative permittivity anisotropic liquid crystal molecules, when a voltage is applied, the long axes of the liquid crystal molecules will be aligned along the vertical direction of the electric field.

[0099] Fig. 18 is a graph showing the relationship between the transmittance (transmittance) and the operating voltage...

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Abstract

An electrode array structure of FFS - LCD consists of a comb common electrode having the first bar elongated along the first direction and the first teeth elongated along the second direction from the first bar as the first teeth having the first bone with the first ladder ledge at its two side walls, as well as a comb picture element electrode having the second bar elongated along the first direction and the second tooth elongated along the second direction from the second bar as the second tooth having the second bone with the second ladder ledge at its two side walls.

Description

technical field [0001] The present invention relates to a fringe-field switching type LCD (FFS-LCD for short), and more particularly relates to an electrode array structure of a fringe-field switching type LCD. Background technique [0002] Generally speaking, a liquid crystal display (LCD) device controls light transmittance by an electric field to display images. To achieve this purpose, the LCD device includes a liquid crystal panel (LC panel) having liquid crystal cells (LC cells) arranged in a matrix, and a driving circuit for driving the liquid crystal panel. In a liquid crystal panel, a pixel electrode and a common electrode are used to make an electric field act on each liquid crystal cell. In a traditional twisted nematic liquid crystal display (TN-LCD) device, the pixel electrodes are located on the lower substrate, and the common electrodes are located on the inner surface of the upper substrate. However, the TN-LCD has the disadvantage of narrow viewing angle, s...

Claims

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Application Information

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IPC IPC(8): G02F1/1343
Inventor吕瑞波洪琪吴诗聪
OwnerTPO DISPLAY