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Liquid crystal display and its mfg. method

A technology of liquid crystal display panels and liquid crystal materials, applied in instruments, nonlinear optics, optics, etc.

Inactive Publication Date: 2005-01-12
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This detrimental effect occurs in those areas of the display panel where the UV epoxy resin is not fully cured because the UV light cannot reach all parts of the epoxy resin due to the shadow cast by the thin film circuit protruding from the peripheral portion of the flat panel substrate. especially likely

Method used

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  • Liquid crystal display and its mfg. method
  • Liquid crystal display and its mfg. method
  • Liquid crystal display and its mfg. method

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Experimental program
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Embodiment Construction

[0029] Figure 1 shows a pair of LCD panel substrates 1a, 1b, which may be constructed of glass or other suitable material and optionally provided with thin film circuitry (not shown) mounted inside. The substrate 1a is provided with a barrier fillet 3 of uniform thickness deposited on the substrate by suitable means. For example, barrier layer raised strips 3 may be formed by depositing a hard material (such as glass) through a lithographic mask to a thickness that is preferably the desired inter-substrate spacing, g, (for example, 5 microns) on the substrate. The raised strip 3 of the barrier layer in said gap g serves as a spacer between the substrates 1a and 1b after 1a and 1b are joined together to form the LCD panel. A preselected amount of liquid crystal material 4 is deposited in the middle portion of the substrate surrounded and defined by the raised strips 3 of the barrier layer. This preselected amount of liquid crystal material.

[0030] In order to implement a p...

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PUM

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Abstract

Fabricating a liquid crystal panel from a pair of substrates using the ''one-drop fill'' method. Here, a relatively thick barrier fillet, as of silicone elastomer, is deposited in the form of a continuous closed circuit upon one of the substrates and is fully cured before depositing the liquid crystal material within that closed circuit. To seal the substrates together, they are brought together to a spacing determined by a relatively thin spacer fillet provided on one of the substrates and an epoxy fillet is deposited along the outer periphery of the substrates. The barrier fillet, preferably compressed, serves to prevent contamination of the liquid crystal material by any regions of uncured epoxy.

Description

technical field [0001] The present invention relates to a flat panel display utilizing a pair of spaced apart substrates with a liquid crystal material sandwiched therebetween and a method of assembling the same. Background technique [0002] There are several methods of assembling a liquid crystal flat panel display (LCD). For example, the prior art has used a method of first forming the two substrate parts that make up the panel with all the required thin film transistors (TFT's), circuit lines and color filters, and then 5 micron glass spheres) to align the two substrate portions of the display panel (sometimes referred to hereafter as the substrates) and then apply a two-part pre-mixed high-temperature epoxy to most of the surrounding portions. The two substrate parts are joined, and a temperature of about 180C is required for several hours to cure or crosslink the high temperature epoxy resin. Then, the resulting empty flat plate part is placed in a vacuum chamber to e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1339
CPCG02F1/1339
Inventor R·J·冯古特费德
Owner AU OPTRONICS CORP