Display device

Abstract

A display device includes a first substrate, a second substrate, a plurality of pixel units, a driving unit, a common electrode, and a column insulation structure. The pixel units are formed at a display area of the first substrate. The driving unit is formed at a non-display area of the first substrate. The common electrode is formed on an inner surface of the second substrate. The connecting layer is electronically connected between two conductive layers of the driving unit. The column insulation structure overlaps the connecting layer and is formed between the first and the second substrates.

What is claimed is: 
     
         1 . A display, comprising:
 a first substrate, having a display area and a non-display area outside of the display area;   a second substrate facing the first substrate;   a common electrode formed on an inner surface of the second substrate;   a plurality of pixel units formed at the display area of the first substrate;   a driving unit formed at the non-display area of the first substrate and comprising:
 a first conductive layer formed at the non-display area of the first substrate; 
 a first insulation layer formed on the first conductive layer; 
 a second conductive layer formed on the first insulation layer; 
 a second insulation layer formed on the second conductive layer; and 
 a connecting layer formed on the second insulation layer, wherein both of the first insulation layer and the second insulation layer have a through-hole, respectively, and the connecting layer is electrically connected between the first conductive layer and the second conductive layer by passing through the through-holes; and 
   a column insulation structure overlapping the connecting layers and formed between the first substrate and the second substrate,
 wherein the column insulation structure is spaced apart from the connecting layer by a gap, 
 wherein the column insulation structure is formed on the common electrode, and a voltage applied to the common electrode is different from a voltage applied to the connecting layer. 
   
     
     
         2 . The display as claimed in  claim 1 , wherein the column insulation structure is located above the connecting layer. 
     
     
         3 . The display as claimed in  claim 1 , wherein the column insulation structure is formed on the common electrode. 
     
     
         4 . The display as claimed in  claim 1 , wherein a width of a surface of the column insulation structure that faces the connecting layer in a horizontal direction is greater than or equal to half of a width of the connecting layer in the horizontal direction. 
     
     
         5 . The display as claimed in  claim 1 , wherein a width of the column insulation structure in a horizontal direction is greater than or equal to a width of the through-holes in the horizontal direction. 
     
     
         6 . The display as claimed in  claim 1 , wherein a thickness of the column insulation structure in a vertical direction ranges from 0.5 um to 7 um. 
     
     
         7 . The display as claimed in  claim 1 , further comprising a liquid-crystal material disposed between the first substrate and the second substrate, wherein the column insulation structure has a dielectric coefficient which is smaller than the highest dielectric coefficient of the liquid-crystal material. 
     
     
         8 . The display as claimed in  claim 1 , wherein the connecting layer is formed of a material selected from ITO, IZO, Al, Cu, and Mo. 
     
     
         9 . The display as claimed in  claim 1 , wherein the driving unit further comprises a supporting structure facing the column insulation structure and extruding in a direction toward the column insulation structure. 
     
     
         10 . The display as claimed in  claim 9 , wherein the driving unit comprises two supporting structures, and the connecting layer is disposed between the two supporting structures. 
     
     
         11 . The display as claimed in  claim 10 , wherein the column insulation structure is in directly contact with the two supporting structures, and a portion of the gap is located between the two supporting structures. 
     
     
         12 . The display as claimed in  claim 9 , wherein the supporting structure is electrical conductor or electrical insulator.