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US 5,673,093 AGranted
Method for manufacturing laminated color filters for liquid crystal displays
OwnerThomas P. Brodyinventor
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Abstract
A method of producing a color filter to be used in conjunction with a display element such as an active or passive matrix liquid crystal panel. The color filter is formed by a stack of exposed and developed film layers, and each layer corresponds to a color of the resulting filter. The stack of exposed film layers is deposited on a transparent sheet.
Claims15
A method of producing at least one color filter for an electronic display element comprising the steps of:
- a) securing a pigmented layer structure onto a carrier sheet, wherein said pigmented layer structure includes an ultraviolet light-sensitive layer containing pigment of a first color of said at least one color filter;
- b) exposing said light-sensitive layer to ultraviolet light;
- c) developing said exposed light-sensitive layer;
- d) securing another pigmented layer structure onto said developed layer, wherein said another pigmented layer structure includes another ultraviolet light-sensitive layer containing pigment of another color of said at least one color filter;
- e) exposing said another light-sensitive layer to ultraviolet light;
- f) developing said exposed another light-sensitive layer;
- g) repeating steps d) to f) for remaining colors of said color filter forming a stack of developed layers;
- and
- h) depositing transparent conductors onto said stack of developed layers.
6 more elements
A method of producing at least one color filter for an electronic display element comprising the steps of:
- a) forming a stack of layered film layers, wherein each of said film layers is exposed and developed and corresponds to one color of said color filter, and wherein each of said film layers is individually exposed and developed;
- b) attaching a backing layer to said stack of film layers;
- and
- c) depositing transparent conductors onto said stack of film layers.
1 more element
Dependencies are inferred from the claim text.