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Liquid crystal display element

A liquid crystal display element and color filter technology, which is applied to optical elements, instruments, photolithography process of pattern surface, etc., can solve the problems of large particle size, insufficient durability, adverse effect on ratio, etc., and achieves excellent contrast ratio. , Wide color reproduction range, excellent black density effect

Inactive Publication Date: 2009-02-25
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to avoid this shortcoming, it is necessary to make the B peak of the color filter close to the short wave, for which purple pigments such as C.I. Pigment Violet 23 are usually used, but there is such a shortcoming: the organic pigment particles in the traditional C.I. Due to the effect of light scattering, the contrast is greatly affected, and the durability is not enough for long-term continuous display.

Method used

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Examples

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Embodiment

[0239] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples. In addition, unless otherwise specified, in the following examples, "part" means "mass part", "%" means "mass %", and "molecular weight" means "weight average molecular weight".

[0240] (Example)

[0241]

[0242] 500 ml of methanesulfonic acid (first solvent) (manufactured by Wako Pure Chemical Industries, Ltd.) was heated to 80° C., and 30.0 g of Pigment C.I. Vinylpyrrolidone (trade name K-30, manufactured by Wako Pure Chemical Industries, Ltd.), prepared pigment solution A (density: 1.0kg / m 2 ).

[0243] The viscosity of the pigment solution A was measured using a viscometer VM-10A-L (trade name, manufactured by CBC Materials Co., Ltd.). As a result, the viscosity of the pigment solution A at a liquid temperature of 25.0° C. was 18.1 mPa·s. Separately, 1500 mL of water containing 15 mL of a 1 mol / L sodium hydroxide s...

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PUM

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Abstract

The invention provides a liquid crystal display component with a wide color reappearance range and a high contrast via making particle diameter of purple organic pigment of C.I. pigment smaller, and combined with tri-wavelength backlight. The invention provides a liquid crystal display component having a color filter and tri-wavelength backlight; wherein the color filter comprises at least one organic pigment nano-particle with average particle diameter less than 50 nm; the peak value of green bright line spectrum of the tri-wavelength backlight is between 520 nm and 540 nm.

Description

technical field [0001] The present invention relates to a liquid crystal display element which has a wide color reproduction range for green and is excellent in contrast, and which has excellent long-term display suitability. Background technique [0002] In recent years, in liquid crystal displays, in order to broaden the color reproduction range in the green (G) direction, people are using three-wavelength LED backlights instead of conventional three-wavelength cold-cathode tubes. [0003] In addition, in order to improve the contrast of the panel, the pigment used in the color filter is also required to be finer. [0004] Pigments have been widely used in many fields because of their bright color tone, high tinting strength and weather resistance. Generally, among these pigments, pigments having fine particles are of great value in practical use, and by preventing the aggregation of the pigments and performing micronizing treatment, vivid hues and high tinting strength c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G03F7/00
CPCG02B5/223G02F1/133514G02F1/133621
Inventor 吉野晴彦松本圭右鸭崎彻柴田直也伊藤英明儿玉知启
Owner FUJIFILM CORP
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