Color filter and liquid crystal display device

Abstract

A color filter includes a transparent substrate, a conductive layer, a color filtering layer, and a protection layer. The conductive layer is formed on the transparent substrate for sensing touch signals, and the periphery of the conductive layer is provided with peripheral electrodes. The color filtering layer is formed on the conductive layer and includes multiple red light filtering sections, multiple green light filtering sections, and multiple blue light filtering sections, and a pixel of a liquid crystal display device includes at least one red light filtering section, at least one green light filtering section and at least one blue light filtering section. The protection layer is formed on the color filtering layer.

What is claimed is: 
     
         1 . A color filter, comprising:
 a transparent substrate;   a first conductive layer disposed on the transparent substrate for sensing touch signals;   a color filtering layer disposed on the first conductive layer and comprises multiple red light filtering sections, multiple green light filtering sections, and multiple blue light filtering sections; and   a second conductive layer being disposed on the color filtering layer and grounded to serve as a shielding layer.   
     
     
         2 . The color filter as claimed in  claim 1 , further comprising:
 at least one peripheral electrode disposed on a periphery of the first conductive layer.   
     
     
         3 . The color filter as claimed in  claim 1 , wherein each of the first conductive layer and the second conductive layer is a transflective conductive layer, and the color filtering layer comprises:
 a spacer layer formed on the first conductive layer and comprises multiple first regions, second regions, and third regions that are distinguished from one another according to respective thicknesses, wherein each first region, each second region and each third region respectively overlap a red light filtering section, a green light filtering section and a blue light filtering section.   
     
     
         4 . The color filter as claimed in  claim 3 , wherein the first conductive layer and the second conductive layer are made of silver or silver alloy. 
     
     
         5 . The color filter as claimed in  claim 3 , wherein the spacer layer is made of dielectric material. 
     
     
         6 . The color filter as claimed in  claim 5 , wherein the dielectric material is selected from the group consisting of MgF 2 , SiO 2 , Si 3 N 4 , Al 2 O 3 , TiO 2 , ZrO 2 , and Nb 2 O 5 . 
     
     
         7 . The color filter as claimed in  claim 3 , further comprising:
 a flattened insulating layer disposed on the color filtering layer.   
     
     
         8 . The color filter as claimed in  claim 1 , wherein the color filtering layer comprises multiple red light filtering sections, multiple green light filtering sections and multiple blue light filtering sections, and each of the light filtering sections is dyed a specific color by an organic pigment. 
     
     
         9 . The color filter as claimed in  claim 8 , further comprising a black matrix disposed between each two adjacent light filtering sections. 
     
     
         10 . The color filter as claimed in  claim 1 , wherein the transparent substrate is a glass substrate, a plastic sheet, or a plastic film. 
     
     
         11 . A liquid crystal display device, comprising:
 a color filter substrate, comprising:
 a first transparent substrate; 
 a first conductive layer disposed on the first transparent substrate for sensing touch signals; 
 a spacer layer disposed on the first conductive layer; 
 a second conductive layer being disposed on the spacer layer and grounded to serve as a shielding layer; 
 a flattened insulating layer disposed on the second conductive layer; and 
 a common electrode formed on the flattened insulating layer; 
   an active matrix substrate, comprising:
 a second transparent substrate; and 
 multiple active devices and multiple pixel electrodes formed on the second transparent substrate; and 
   a liquid crystal layer interposed between the color filter substrate and the active matrix substrate.   
     
     
         12 . The liquid crystal display device as claimed in  claim 11 , wherein the spacer layer comprises multiple first regions, second regions, and third regions that are distinguished from one another according to respective thicknesses, and each first region, each second region and each third region respectively overlap a red pixel portion, a green pixel portion and a blue pixel portion. 
     
     
         13 . The liquid crystal display device as claimed in  claim 11 , wherein each of the first conductive layer and the second conductive layer is a transflective conductive layer. 
     
     
         14 . The liquid crystal display device as claimed in  claim 13 , wherein the first conductive layer and the second conductive layer are made of silver or silver alloy. 
     
     
         15 . The liquid crystal display device as claimed in  claim 11 , further comprising:
 at least one peripheral electrode disposed on a periphery of the first conductive layer.   
     
     
         16 . The liquid crystal display device as claimed in  claim 11 , wherein the spacer layer is made of dielectric material. 
     
     
         17 . The liquid crystal display device as claimed in  claim 16 , wherein the dielectric material is selected from the group consisting of MgF 2 , SiO 2 , Si 3 N 4 , Al 2 O 3 , TiO 2 , ZrO 2 , and Nb 2 O 5 . 
     
     
         18 . The liquid crystal display device as claimed in  claim 11 , wherein the first conductive layer, the spacer layer, and the second conductive layer are arranged to form a plurality of single cavity Fabry-Perot filters. 
     
     
         19 . The liquid crystal display device as claimed in  claim 11 , wherein each of the first transparent substrate and the second transparent substrate is a glass substrate, a plastic sheet, or a plastic film.