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Liquid crystal display device

A liquid crystal display device, display technology, applied in transistors, optics, instruments, etc., can solve the problems of brightness spots, spots, pressure deterioration, etc.

Active Publication Date: 2007-07-04
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, cylindrical spacers present their own problems
First, they may not prevent touch degradation defects that occur at the surface of the LCD device
For example, when swiping across portions of the surface of an LCD device, uneven brightness at the swiped portion may produce blotches
Second, the pressure deterioration defect occurs when the surface of the LCD device is pressed with a fixed force
In this case, the color filter substrate or TFT substrate may be deformed to cause corresponding blemishes

Method used

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Examples

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Embodiment Construction

[0022] Touch degradation occurs on the LCD device due to contact between the columnar spacer and the substrate during touching. That is, the contact between the columnar spacer and the substrate generates frictional force between them. If the substrate is unfavorably affected by these frictional forces, the liquid crystal molecules may not return to their original state, resulting in blotches in the touched portion. Touch degradation can be reduced or prevented by reducing the number of columnar spacers in contact with the substrate.

[0023] Pressure degradation occurs when pressure is applied to the substrate to generate deformation in the color filter substrate and / or thin film transistor (TFT) substrate. Pressure degradation may be reduced or prevented by increasing the number of columnar spacers so that the color filter substrate and / or the TFT substrate may be prevented from being deformed when pressure is applied.

[0024] Touch degradation and pressure degradation wo...

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Abstract

A liquid crystal display device minimizing touch inferiority and a press inferiority defects is provided. The device includes first and second substrates, a liquid crystal layer interposed therebetween, gap spacers between the first and second substrates for maintaining a cell gap, and pressure spacers between the first and second substrates configured to contact the first and second substrates when pressure is applied to the first or second substrate, wherein a spatial density of the gap spacers or a spatial density of the pressure spacers varies at different positions across the first and second substrates.

Description

technical field [0001] The present invention relates to a liquid crystal display (LCD) device, and more particularly, to an LCD device capable of preventing touch inferiority and Pressure deterioration (press inferiority). Background technique [0002] Flat panel display devices have been widely developed due to their compact structure, light weight, and low power consumption. Flat panel displays include liquid crystal displays (LCDs), plasma display panels (PDPs), field emission displays (FEDs), and vacuum fluorescent displays (VFDs). LCDs are becoming more and more popular because they are easy to drive and have excellent image display capabilities. [0003] FIG. 1 is a schematic diagram showing a portion of a typical LCD panel. As shown in FIG. 1, the LCD panel 1 generally includes a lower substrate 5, an upper substrate 3, and a liquid crystal layer 7 disposed therebetween. The lower substrate 5 (also referred to as a driving device array substrate) includes a plural...

Claims

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Application Information

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IPC IPC(8): G02F1/1333G02F1/1339G02F1/136
CPCG02F1/13452G02F1/136286G02F1/13396H01L29/786
Inventor 李泰林
Owner LG DISPLAY CO LTD
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