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Monomer, and method for using it to fabricate LCD faceplate

A monomer and substrate technology, applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve problems such as lattice defects, affecting the display quality of liquid crystal display panels, and different diffusion distances between reactive monomers and liquid crystal molecules.

Inactive Publication Date: 2007-02-21
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the first and second substrates are assembled and pressed together, the diffusion distances between the reactive monomers and the liquid crystal molecules are different.
Moreover, the reactive monomers are easily pushed to the boundary of the liquid crystal beads by the liquid crystal molecules, resulting in a higher concentration of reactive monomers between the two drops of liquid crystal beads
Therefore, the pretilt angle at the boundary of the liquid crystal drop will increase due to the high concentration of the polymer polymerized by the reactive monomer, which will cause the liquid crystal display panel to produce white lattice defects (lattice mura), which seriously affects the liquid crystal display panel. display quality of

Method used

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  • Monomer, and method for using it to fabricate LCD faceplate
  • Monomer, and method for using it to fabricate LCD faceplate
  • Monomer, and method for using it to fabricate LCD faceplate

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0063] The first synthesis example: a kind of embodiment in chemical formula [11]

[0064] (1-1) Synthesis of 4-hydroxy-4'-ethoxybiphenyl (4-hydroxy-4'-ethyloxybiphenyl), as shown in chemical formula [51]:

[0065]

[0066]First, the reaction bottle was filled with argon gas, and 8 mmol (mmol), 60% by weight sodium hydride and 200 ml of dry dimethoxyethane (dimethoxyethane, DME) were put into the reaction bottle. Next, when the reaction solution was cooled by ice cubes, 2 mmol of 4,4'-dihydroxybiphenyl (4,4'-dihydroxybiphenyl) was added to the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution was continuously stirred for 2 hours. Next, the reaction solution was cooled to minus 60°C. Then, 1 mmol of bromoethane was gradually dropped into the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution was continuously stirred until the next day. Then, the reaction solution ...

no. 2 example

[0070] The second synthesis example: a kind of embodiment in the chemical formula [17]

[0071] (2-1) Synthesis of 4-(2-hydroxyethoxy)-4'-ethoxybiphenyl (4-(2-hydroxyethyloxy)-4'-ethyloxybiphenyl), as shown in the chemical formula [53]:

[0072]

[0073] First, the reaction flask was filled with argon gas, and 4 mmol, 60% by weight of sodium hydride and 200 ml of dry dimethoxyethane were put into the reaction flask. Next, when the reaction solution was cooled by ice cubes, 1 mmol of 4-hydroxy-4'-ethyloxybiphenyl (4-hydroxy-4'-ethyloxybiphenyl) was added to the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution was continuously stirred for 2 hours. Next, the reaction solution was cooled to minus 60°C. Then, 1.5 mmol of bromoethanol was gradually dropped into the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution was continuously stirred until the next day. Then, th...

no. 3 example

[0077] The third synthesis example: a kind of embodiment in chemical formula [23]

[0078] (3-1) has the same steps as (2-1) to obtain 4-(2-hydroxyethoxy)-4'-ethoxybiphenyl, which will be omitted here.

[0079] (3-2) Synthetic monomer, as shown in chemical formula [55]:

[0080]

[0081] First, the reaction flask was filled with argon gas, and 4 mmol, 60% by weight of sodium hydride and 200 ml of dry dimethoxyethane were put into the reaction flask. Then, when the reaction solution was cooled by ice cubes, 1 mmol of 4-(2-hydroxyethoxy)-4'-ethoxybiphenyl was added to the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution was continuously stirred for 2 hours. Next, the reaction solution was cooled to minus 60°C. Then, 1.5 mmol of 3-bromo-2-fluoroprop-1-ene (3-bromo-2-fluoroprop-1-ene) was gradually dropped into the reaction solution. Then, the reaction solution was heated to room temperature, and the reaction solution ...

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Abstract

This invention discloses a monomer shown in formula 1, wherein A is selected from formulae 2-4 or their combination; at least one of B and R is selected from alkyl, alkoxyl, ester group, formulae 5-8 or their combination; T is selected from O, N or their combination; X is selected from H, alkyl, halogen, cyano or their combination; n s a positive integer.

Description

technical field [0001] The invention relates to a monomer and a method for manufacturing a liquid crystal display panel using it, and in particular to a monomer that is more easily miscible with liquid crystal molecules and a method for manufacturing a liquid crystal display panel using the same. Background technique [0002] In today's era of rapid technological development, liquid crystal display panels have been widely used in electronic display products, such as televisions, computer screens, notebook computers, mobile phones or personal digital assistants. In particular, the multi-domain alignment liquid crystal display panel prepared by polymer-stabilized alignment (PSA) technology has fast response time, wide viewing angle, high aperture ratio, and high contrast. It is a technology that has always been valued by the industry due to its advantages such as simple manufacturing process. [0003] In the PSA technology, in the process of preparing the display panel, a sma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C43/215C07C43/205C07C43/225C07C43/20C07C65/24C09K19/10C09K19/32G02F1/1333
Inventor 谢忠憬郑德胜林朝成白家瑄丘至和杉浦规生廖唯伦连水池
Owner AU OPTRONICS CORP
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