Color filter and manufacturing method therefor
First Claim
1. A color filter comprising ink films colored by inks, inside openings enclosed by banks demarcated and formed on a substrate, wherein a contact angle between said banks and said inks is 30 degrees or greater but 60 degrees or less, andsaid banks have a laminar structure comprising a metal film and a photosensitive organic thin film.
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Accused Products
Abstract
The color filter of the present invention comprises ink films colored by ink drops 140 inside openings 111 enclosed by banks 112 demarcated and formed on a substrate 110. The banks 112 have a laminar structure comprising a metal film 120 and a photosensitive organic thin film 130 from the substrate 110 side. The inks should contain a solvent having a high boiling point. The bank layer may also be configured so that the peripheral edges of the bottom surface thereof are positioned inside from the peripheral edges of the light blocking layers, so that the light blocking layers have exposed surfaces on the upper surface thereof where the bank layer is not superimposed. Thus color filters can be provided which exhibit outstanding contrast without coloring irregularities.
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Citations
75 Claims
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1. A color filter comprising ink films colored by inks, inside openings enclosed by banks demarcated and formed on a substrate, wherein a contact angle between said banks and said inks is 30 degrees or greater but 60 degrees or less, and
said banks have a laminar structure comprising a metal film and a photosensitive organic thin film.
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19. A method of manufacturing a color filter comprising ink films, colored by inks, in openings enclosed in banks demarcated and formed on a substrate, wherein a contact angle between said banks and said inks is 30 degrees or greater but 60 degrees or less, and
a first step for forming a metal film on said substrate; -
a second step for forming said banks by forming a photosensitive organic thin film on said metal film; and
a third step for forming said ink films by filling said openings with said inks. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A color filter manufacturing method comprising:
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forming a metal thin film matrix pattern that is a light blocking layer on a transparent substrate;
forming matrix pattern banks, with a resin on the metal thin film light blocking layer; and
applying inks in gaps in said matrix pattern wherein a contact angle between said banks and said inks is 30 degrees or greater but 60 degrees or less. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A liquid crystal display device manufacturing method comprising:
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forming a light blocking matrix pattern by a thin film metal on a transparent substrate;
forming a resin matrix pattern of banks stacked on that light blocking matrix pattern, subjecting surface of said resin matrix pattern and substrate surface in matrix gaps to dry etching prior to deploying inks;
deploying inks in said matrix gaps by ink jet, wherein a contact angle between said banks and said inks is 30 degrees or greater but 60 degrees or less;
drying and hardening inks so that film thickness becomes uniform;
applying a transparent overcoat on upper surface of ink after hardening ink;
forming a thin film electrode on top of said transparent overcoat;
deploying color filter substrate obtained by said steps in an opposing substrate having pixel electrodes; and
sealing a liquid crystal composition in gap between said color filter substrate and said opposing substrate. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. A color filter wherein:
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light blocking regions and light transmitting regions are arranged in a prescribed matrix pattern on a transparent substrate;
said light blocking regions comprise light blocking layers and a bank layer provided on said light blocking layers, wherein said light transmitting regions are configured by coloring layers formed by inks and demarcated by said light blocking regions;
peripheral edges of bottom surface of said bank layer are positioned inside from peripheral edges of said light blocking layers;
said light blocking layers have exposed surfaces on upper surface thereof where said bank layer is not superimposed; and
peripheral edges of coloring layers are superimposed on said exposed surfaces of said light blocking layers wherein a contact angle between said banks and said inks is 30 degrees or greater but 60 degrees or less. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61)
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62. A color filter manufacturing method comprising the steps of:
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(a) forming light blocking layers having a prescribed matrix pattern on a transparent substrate;
(b) forming a bank layer having a prescribed matrix pattern on said light blocking layers, wherewith peripheral edges of bottom surface of said bank layer are positioned inside outer edges of said light blocking layers, and some of upper surface of those light blocking layers is formed in an exposed condition; and
(c) forming coloring layers by inks in coloring region formation regions demarcated by said light blocking layers and said bank layer, wherewith said coloring layers are formed on said substrate, and peripheral edges thereof are formed in a condition wherein they are superimposed on exposed surfaces on upper surface of said light blocking layers wherein a contact angle between said banks and said inks is 30 degrees or greater but 60 degrees or less. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75)
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Specification