Blue coloring composition for color filter, color filter and color display device

A technology of coloring composition and blue colorant, which is applied in the direction of optical filters, electric solid devices, semiconductor devices, etc., can solve the problems of high cost, complex structure of components, difficulty in high precision, large screen, etc., and achieve high Effects of contrast, wide color rendering area, and high brightness

Active Publication Date: 2010-01-27
TOYO INK SC HOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In recent years, color display devices using organic EL elements have attracted attention because of their excellent display performance. However, in the structure in which light-emitting layers are formed separately for each display color (red, green, blue), these organic EL light-emitting layers are usually Formed by separate coating of RGB, the structure of the device is complicated, making it difficult to align the mask when manufacturing the device
When the manufacturing becomes complicated, the cost increases, and it is difficult to increase the precision and enlarge the screen

Method used

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  • Blue coloring composition for color filter, color filter and color display device
  • Blue coloring composition for color filter, color filter and color display device
  • Blue coloring composition for color filter, color filter and color display device

Examples

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Embodiment 1～18 and comparative example 1～2

[0268]The above-obtained red resist was coated on a 100 mm×100 mm, 0.7 mm thick glass substrate with a spin coater so that the film thickness of x=0.640 and y=0.330. After drying, the cumulative light intensity was 150 mJ, and the streak-shaped pattern was exposed with an exposure machine, and developed with an alkaline developer for 90 seconds to form a stripe-shaped red filter segment. The alkaline developer was composed of 0.15% by weight of sodium carbonate, 0.05% by weight of sodium bicarbonate, 0.1% by weight of an anionic surfactant (“Perilex NBL” manufactured by Kao Corporation), and 99.7% by weight of water. After heating and cooling the substrate on which the red filter segments were formed, the above-obtained green resist was applied to have a film thickness of x=0.300 and y=0.600 in the same manner as the red resist. After drying, the stripe-shaped pattern adjacent to the red filter segment was exposed with an exposure machine, and developed with an alkaline develo...

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PUM

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Abstract

The blue coloring composition for color filter according to the invention contains transparent resin and blue colorants which comprising copper phthalocyanine color and at least one xanthene colorant selected from a group composed of metallic colorant of the xanthene colorant and the xanthene colorant. The color filter according to the invention has more than one red filter segments, more than one green filter segments and more than one blue filter segments, at least one blue filter segments comprise the above described blue coloring composition. The invention also discloses a color display device comprising the described color filter, and a light-emitting device by using white light-emitting organic EL element as light source.

Description

technical field [0001] The present invention relates to a blue coloring composition for color filters, a color filter, and a color display device having a color filter and a light source. More specifically, the present invention relates to a color filter suitable for a color display device using a white light-emitting organic EL (electroluminescence) element (hereinafter sometimes referred to as "OLED") and a blue color filter used for forming the color filter. A coloring composition, and a color display device having the color filter and OLED. In addition, "white" means a broad concept including quasi-white. Background technique [0002] As an image display device using a color filter, for example: (A) a backlight as a light source, a liquid crystal as an optical shutter, and a color adjustment function (color conversion function, color separation function, color correction function, etc.) A liquid crystal display device with a color filter; (B) an organic EL display devi...

Claims

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Application Information

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IPC IPC(8): G02B5/20H01L27/32
Inventor 中村高士山崎智己玉野美智子西田充志高桥英雄
Owner TOYO INK SC HOLD CO LTD
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