Liquid crystal display device

Abstract

A liquid crystal display device prevents an alignment film between an inorganic insulating film and a sealant from peeling off the inorganic insulating film in a seal portion. The device has a TFT substrate and a counter substrate bonded together by the sealant in the seal portion with liquid crystal sandwiched therebetween. The TFT substrate has pixels in a matrix pattern along with the alignment film, and the TFT substrate and the counter substrate are rectangular in external shape. The TFT substrate has a display area and a terminal area. The display area is formed surrounded by the sealant. The counter substrate is absent over the terminal area. The alignment film is disposed under the sealant on the TFT substrate. An oxide conductive film, disposed under the alignment film, is formed up to the edge of the TFT substrate and is in an electrically floating state.

What is claimed is: 
     
         1 . A liquid crystal display device comprising:
 a first substrate having an organic film, pixel electrodes provided on the organic film, and an alignment film covering the organic film and the pixel electrodes;   a second substrate opposed to the first substrate; and   a sealant bonding the first substrate and the second substrate;   wherein   the liquid crystal display device has a display area surrounded by the sealant, and a terminal area that the first substrate does not oppose to the second substrate,   the first substrate has a plurality of oxide conductive films in a region overlaps with the sealant in a plan view,   each of the plurality of oxide conductive films is in an electrically floating state,   the plurality of oxide conductive films are formed up to a position corresponding to an edge of the second substrate on a side of the terminal area, and   the alignment film is subject to a process of photo-alignment.   
     
     
         2 . The liquid crystal display device according to  claim 1 ,
 wherein each of the plurality of oxide conductive films is formed as an island in a plan view.   
     
     
         3 . The liquid crystal display device according to  claim 1 ,
 wherein the plurality of oxide conductive films are made of indium tin oxide.   
     
     
         4 . The liquid crystal display device according to  claim 1 ,
 wherein the plurality of oxide conductive films do not connect to the pixel electrodes.   
     
     
         5 . The liquid crystal display device according to  claim 1 ,
 wherein the organic film is not formed up to an edge of the first substrate.   
     
     
         6 . The liquid crystal display device according to  claim 5 ,
 wherein the organic film is formed up to the position corresponding to an edge of the second substrate on a side of the terminal area.   
     
     
         7 . The liquid crystal display device according to  claim 1 ,
 wherein the plurality of oxide conductive films are formed up to an edge of the first substrate except at a side of the terminal area.   
     
     
         8 . The liquid crystal display device according to  claim 1 ,
 wherein an edge of the alignment film is formed up to the edge of the second substrate.   
     
     
         9 . A liquid crystal display device comprising:
 a first substrate having an organic film, pixel electrodes provided on the organic film, and an alignment film covered the organic film and pixel electrodes;   a second substrate opposed to the first substrate; and   a sealant bonding the first substrate and the second substrate;   wherein   the liquid crystal display device has a display area surrounded by the sealant, and a terminal area that the first substrate does not oppose to the second substrate,   the alignment film is interposed between the sealant and the first substrate,   an organic film is interposed between the alignment film and the first substrate in the display area, and the organic film is not formed up to a position corresponding to an edge of the second substrate,   an oxide conductive film is interposed between the alignment film and the first substrate, and the oxide conductive film is formed up to the position corresponding to the edge of the second substrate; and   wherein the oxide conductive film is in as electrically floating state.   
     
     
         10 . The liquid crystal display device according to  claim 9 ,
 wherein the oxide conductive film is in a region that overlaps with the sealant in a plan view,   
     
     
         11 . The liquid crystal display device according to  claim 9 ,
 wherein the alignment film is subject to a process of photo-alignment.   
     
     
         12 . The liquid crystal display device according to  claim 11 ,
 wherein an edge of the alignment film is formed up to the position corresponding to the edge of the second substrate.   
     
     
         13 . The liquid crystal display device according to  claim 9 ,
 wherein the oxide conductive film is made of indium tin oxide.   
     
     
         14 . The liquid crystal display device according to  claim 9 ,
 wherein the oxide conductive film is formed as an island in a plan view.