US2010091231A1PendingUtilityA1

Liquid crystal display device and electronic apparatus

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Assignee: SEIKO EPSON CORPPriority: Oct 14, 2008Filed: Sep 16, 2009Published: Apr 15, 2010
Est. expiryOct 14, 2028(~2.3 yrs left)· nominal 20-yr term from priority
G02F 1/133397G02F 2201/40G02F 1/134372G02F 1/134363G02F 1/134345G02F 1/134381G02F 1/13439
57
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Claims

Abstract

Provided is a liquid crystal display device including: first and second substrates with a liquid crystal layer interposed therebetween; a first electrode formed on the liquid crystal layer side of the first substrate and having linear portions; a second electrode having linear portions formed along the linear portions of the first electrode and adjacent to the linear portions of the first electrode at a gap in plan view; and a third electrode formed on the liquid crystal layer side of the second substrate and having linear portions overlapping with the linear portions of the second electrode in plan view, wherein electric fields having different directions are generated between the first electrode and the second electrode and between the first electrode and the third electrode.

Claims

exact text as granted — not AI-modified
1 . A liquid crystal display device comprising:
 first and second substrates with a liquid crystal layer interposed therebetween;   a first electrode formed on the liquid crystal layer side of the first substrate and having linear portions;   a second electrode having linear portions formed along the linear portions of the first electrode and adjacent to the linear portions of the first electrode at a gap in plan view; and   a third electrode formed on the liquid crystal layer side of the second substrate and having linear portions overlapping with the linear portions of the second electrode in plan view,   wherein electric fields having different directions are generated between the first electrode and the second electrode and between the first electrode and the third electrode.   
     
     
         2 . The liquid crystal display device according to  claim 1 , wherein the third electrode is formed of a transparent conductive material. 
     
     
         3 . The liquid crystal display device according to  claim 1 , wherein a potential of the third electrode is at least one of a potential of the second electrode, an intermediate potential between the voltage of the first electrode and the voltage of the second electrode, a fixed potential or a floating state in potential. 
     
     
         4 . The liquid crystal display device according to  claim 1 , wherein the linear portions of the third electrode have a longitudinal direction along scanning lines or signal lines formed on the first substrate. 
     
     
         5 . The liquid crystal display device according to  claim 1 , further comprising:
 a fourth electrode having linear portions formed nearer the first substrate side than the first electrode and the second electrode with an insulating film interposed therebetween; and   a fifth electrode having linear portions formed along the linear portions of the fourth electrode and adjacent to the linear portions of the fourth electrode at a gap in plan view,   wherein the first electrode is formed such that the linear portions thereof overlap with those of one of the fourth electrode and the fifth electrode in plan view, and the second electrode is formed such that the linear portions thereof overlap with those of the other of the fourth electrode and the fifth electrode in plan view, and   wherein the first electrode is electrically connected to the other of the fourth electrode and the fifth electrode, and the second electrode is electrically connected to one of the fourth electrode and the fifth electrode.   
     
     
         6 . The liquid crystal display device according to  claim 5 , wherein the widths of the linear portions of the fourth electrode and the linear portions of the fifth electrode are larger than those of the linear portions of the first electrode and the linear portions of the second electrode, respectively. 
     
     
         7 . The liquid crystal display device according to  claim 5 , wherein the widths of the linear portions of the fourth electrode and the linear portions of the fifth electrode are equal to those of the linear portions of the first electrode and the linear portions of the second electrode, respectively. 
     
     
         8 . A liquid crystal display device including a plurality of sub pixel regions, the device comprising:
 first and second substrates with a liquid crystal layer interposed therebetween;   a first electrode formed on the liquid crystal layer side of the first substrate;   a second electrode formed nearer the liquid crystal layer side than the first electrode with an insulating film interposed therebetween and having a plurality of linear portions in a region overlapping with the first electrode in plan view,   wherein a third electrode having a plurality of linear portions is formed on the liquid crystal layer side of the second substrate, the linear portions of the third electrode do not overlap with the linear portions of the second electrode in plan view and have portions formed along the linear portions of the second electrode, and electric fields are generated between the second electrode and the third electrode and between the second electrode and the first electrode.   
     
     
         9 . The liquid crystal display device according to  claim 8 , wherein the third electrode is formed of a transparent conductive material. 
     
     
         10 . The liquid crystal display device according to  claim 8 , wherein a potential of the third electrode may be at least one of a potential of the second electrode, an intermediate potential between the voltage of the first electrode and the voltage of the second electrode, a fixed potential or a floating state in potential. 
     
     
         11 . The liquid crystal display device according to  claim 8 , wherein the linear portions of the third electrode have a longitudinal direction along scanning lines or signal lines formed on the first substrate. 
     
     
         12 . The liquid crystal display device according to  claim 8 , wherein gaps between the linear portions of the third electrode are different in at least one of the sub pixel regions. 
     
     
         13 . An electronic apparatus comprising the liquid crystal display device according to  claim 1  in a display unit.

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