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Liquid crystal display panel and method for producing the same

A liquid crystal display panel, liquid crystal layer technology, applied in liquid crystal materials, chemical instruments and methods, optics and other directions

Active Publication Date: 2009-01-28
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Improve the problem of image sticking by reducing the residual amount of photosensitive monomer in the liquid crystal material

Method used

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  • Liquid crystal display panel and method for producing the same
  • Liquid crystal display panel and method for producing the same
  • Liquid crystal display panel and method for producing the same

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Embodiment Construction

[0019] According to the applicant's preliminary experimental results, the higher the residual amount of photosensitive monomer in the liquid crystal display panel, the more serious the problem of uneven brightness or image retention will be. Accordingly, the applicant believes that the main reason for the uneven brightness of the liquid crystal display panel or image sticking is that the photosensitive monomers in the liquid crystal display panel are not fully polymerized into alignment polymers, and impurities (i.e. photosensitive monomers) are filled in the liquid crystal. The material has a negative impact on the liquid crystal molecular reaction characteristics. Therefore, the present invention mainly proposes a method for manufacturing a liquid crystal display panel, which performs two polymerization reactions, so that the photosensitive monomer can be completely polymerized into an alignment polymer, avoiding residues in the liquid crystal material, and improving uneven b...

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Abstract

The invention provides a preparation method used for a liquid crystal display panel, comprising the steps as follows: (a) an upper substrate and a lower substrate are provided; (b) liquid crystal material is poured between the upper substrate and the lower substrate; the liquid crystal material comprises at least a liquid crystal molecular and at least two photosensitive monomers, wherein, the absorbing wavelength of at least one photosensitive monomer is more than 300nm; and (d) voltages are applied between the upper substrate and the lower substrate; furthermore, according to the ultraviolet of the first wavelength, most of photosensitive monomers are polymerized as alignment polymers; (d) the ultraviolet of the second wavelength is radiated so as to lead the residual photosensitive monomers to be polymerized, wherein, the second wavelength is more than the first wavelength.

Description

technical field [0001] The invention relates to a liquid crystal display panel and a manufacturing method thereof, in particular to a liquid crystal display panel using a polymer-assisted alignment technology and a manufacturing method thereof. Background technique [0002] In recent years, liquid crystal display panels have developed an alignment technology: Polymer-Stabilizing Alignment (PSA) technology, which is to mix photosensitive monomers into the liquid crystal layer, and apply an external energy source ( For example, by irradiating ultraviolet light or heating), the photosensitive monomer is polymerized into an alignment polymer to guide the alignment of liquid crystal molecules. [0003] However, the liquid crystal display panel made by polymer assisted alignment technology is prone to image non-uniform (mura) defects or image sticking (image sticking) problems. Image non-uniformity generally refers to the problem of low contrast and uneven brightness of local ima...

Claims

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Application Information

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IPC IPC(8): G02F1/1337G02F1/1333G03F7/004C09K19/00
Inventor 谢忠憬白家瑄黄晟玮郑德胜杉浦规生
Owner AU OPTRONICS CORP
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