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Alignment composition, alignment film and alignment method thereof, and display panel

A technology of composition and alignment film, which is applied in the fields of instruments, optics, nonlinear optics, etc., and can solve problems such as damage to photosensitive components and reduced service life of photo-alignment devices

Active Publication Date: 2018-06-15
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the existing alignment film is aligned by the photo-alignment method, the linearly polarized extreme ultraviolet light adopted is a low-wavelength linearly polarized extreme ultraviolet light with higher energy, and the photosensitive components in the photo-alignment device are more sensitive to ultraviolet light (such as Polarizers, photosensitive sensors, etc.), long-term exposure to low-wavelength linear polarized extreme ultraviolet light will damage the photosensitive components in the photoalignment device to varying degrees, resulting in reduced service life of the photoalignment device

Method used

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  • Alignment composition, alignment film and alignment method thereof, and display panel
  • Alignment composition, alignment film and alignment method thereof, and display panel
  • Alignment composition, alignment film and alignment method thereof, and display panel

Examples

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Embodiment 1

[0064] The alignment composition provided in this preferred embodiment includes p-diaminoazobenzene and TiO with a mass ratio of 17:1 2 ;in,

[0065] TiO 2 It is nano-level, the particle size distribution is about 25nm, and it is mixed crystal phase of anatase and rutile.

Embodiment 2

[0067] The alignment composition provided in this preferred embodiment includes alignment materials and TiO 2 and the alignment material is a mixture of polyimide and p-diaminoazobenzene, the quality of p-diaminoazobenzene is 40% of the mass of the alignment material, and the p-diaminoazobenzene and TiO in the alignment material 2 The mass ratio of is 17:1; among them,

[0068] TiO 2 It is nano-level, the particle size distribution is about 25nm, and it is mixed crystal phase of anatase and rutile.

Embodiment 3

[0070] The alignment composition provided in this preferred embodiment includes 4,4'-dinitroazobenzene and TiO with a mass ratio of 20:1 2 ;in,

[0071] TiO 2 It is nano-level, the particle size distribution is about 25nm, and it is mixed crystal phase of anatase and rutile.

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Abstract

The invention discloses an alignment combination, an alignment film, an alignment method of the alignment film and a display panel, and relates to the technical field of liquid crystal display. On the premise of not affecting display effect of the display panel, influences of linear polarized ultraviolet light on photosensitive components in an optical alignment device are reduced, and service life of the optical alignment device is prolonged. The alignment combination comprises an alignment material and an inorganic photosensitive material capable of generating photo-generated charge carriers under excitation of the linear polarized ultraviolet light. The alignment material comprises an azo-type alignment material. The wavelength of the linear polarized ultraviolet light is 300-400nm. Superoxide radicals and hydroxyl radicals capable of enabling azo bonds to break under ultraviolet light can be formed by the photo-generated charge carriers, oxygen and water. The alignment film comprises the alignment combination. The alignment combination is applied to the display panel.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to an alignment composition, an alignment film and an alignment method thereof, and a display panel. Background technique [0002] At present, when making a liquid crystal display panel, it is necessary to form a layer of alignment film on the display substrate, and align the alignment film so that the long axes of the liquid crystal molecules are regularly arranged in the liquid crystal display panel, so as to realize the alignment of the liquid crystal display panel. Image display. [0003] The existing alignment methods generally include rubbing alignment methods and photo-alignment methods; among them, the photo-alignment method is suitable for alignment films containing photosensitive groups in the alignment molecules, specifically, using linear polarized ultraviolet light to irradiate the alignment film, so that the alignment film in the alignment film The phot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1337
CPCG02F1/133711G02F1/133788
Inventor 邢伟强王永茂邓金阳毛振华
Owner BOE TECH GRP CO LTD
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