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Protective film composition for cylindrical shock insulator of liquid crystal display element

A liquid crystal display element and protective film technology, which is applied to the photoplate making process, instruments, optics and other directions of the patterned surface, which can solve the problems of poor heat resistance and graphic stability, difficult to achieve viscosity, difficult to form thickness, etc., to achieve improved adhesion properties, improve crack resistance, and maintain elasticity

Inactive Publication Date: 2006-05-10
SAMSANG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, as the photocurable composition disclosed in the above-mentioned laid-open patent publication, it is difficult to form a thickness of 3 to 10 μm suitable for a cell gap used in a liquid crystal display device.
That is: as the above-mentioned composition, it is difficult to achieve an appropriate viscosity when a film having a thickness of 3 to 10 μm is produced by the spin coating method, so the above-mentioned composition must be repeatedly subjected to spin coating, curing and developing operations to form a suitable thickness. septum, this operation is laborious
In addition, since the above-mentioned composition uses an acrylic resin as a main component, it is difficult to form a spacer having a uniform thickness due to volume shrinkage after curing, and thus has poor heat resistance and pattern stability.

Method used

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  • Protective film composition for cylindrical shock insulator of liquid crystal display element
  • Protective film composition for cylindrical shock insulator of liquid crystal display element
  • Protective film composition for cylindrical shock insulator of liquid crystal display element

Examples

Experimental program
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Effect test

Embodiment 1

[0052] According to the composition and content described in Table 1 below, add adhesive resin, multifunctional monomer, photoinitiator, silane-based epoxy compound and predetermined photoinitiator in sequence in the reaction mixing tank equipped with ultraviolet blocking film and stirrer. Adding and subtracting agents, thermal polymerization inhibitors, defoaming agents, and leveling agents to prepare the protective film composition for columnar spacers, and stir at room temperature. Next, a solvent was added to the composition to adjust the viscosity of the protective film composition to 25 cps.

[0053] In the embodiment, the above general formula 1 of the adhesive resin (in general formula 1, X is a methyl group, Y 1 is ethyl) of Y 2 Use chemical formula (1-I)~chemical formula (1-XX) to represent chemical formula (I)~chemical formula (XX) respectively, at this moment, R 1 , R 2 , R 3 , R 4 They are methyl, methyl, ethyl and methyl respectively, and k is 1.

Embodiment 2～32

[0055] A protective film composition for a pillar spacer was produced by the same method except that the components and contents of the composition of Example 1 were changed according to the composition described in Table 1 below.

Embodiment 33～51

[0070] A protective film composition for a columnar spacer was produced by the same method except that a urethane acrylate resin was further added to the composition of Example 1 above, and the components and contents were changed according to the composition described in Table 2 below. In Table 2, the number of unsaturated double bonds in the side chain of the urethane acrylate resin (manufactured by Shin-Nakamura Co., Ltd., Japan) is 1-15, represented by UA1-UA15, respectively.

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Abstract

The present invention provides a protective film composition for a columnar spacer of a liquid crystal display element, comprising an adhesive resin represented by general formula 1, an adhesive resin represented by general formula 2, and a compound selected from the composition group of these mixtures 10-40 parts by weight of any one of adhesive resins, 1-20 parts by weight of polyfunctional monomers with ethylenically unsaturated bonds, 1-10 parts by weight of photoinitiators, and 0.001-0.1 parts by weight of silicon-based compounds containing epoxy groups parts by weight. The protective film composition of the present invention not only has excellent heat resistance, but also can form a pattern at an appropriate thickness when forming a columnar spacer, and is excellent in flatness, resolution, residual film rate, and pattern stability.

Description

technical field [0001] The present invention relates to a protective film composition for a columnar spacer of a liquid crystal display element, especially when forming a columnar spacer of a liquid crystal display element, forming a pattern on an appropriate thickness is flatness, resolution, residual film rate and A protective film composition excellent in pattern stability. Background technique [0002] Generally, a liquid crystal display element (LCD) is composed of spacers and liquid crystals between two opposing upper and lower plates and interposer plates. The spacers protect the thickness of the liquid crystal layer, that is, the cell gap as the space between the plates. . Only by maintaining a certain cell gap can the performance of liquid crystal display elements such as high-speed response, high contrast, and wide viewing angle be exhibited. [0003] Currently, the most widely used spacer forming method is a method of dispersing and coating transparent spherical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/04G02F1/1339G03F7/027G03F7/038G03F7/075
Inventor 裵琉璃车爀镇李在桓洪性宰李根周郑容万崔淑英柳美善金英根金泰永金雄俞椿雨李垈忧具东建权武铉李喆雨尹相壹
Owner SAMSANG CORP