US 2006/0066780 A1Published application

Liquid crystal display device

AssigneeHitachi, Ltd.

InventorsTakahiro Ochiai, Kikuo Ono, Ryutaro Oke, Kazuhiko Yanagawa

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Abstract

A pair of electrodes which constitute an upper layer and a lower layer with respect to an interlayer insulation film are formed as different layers at respective pixel regions on a liquid-crystal-side surface of one substrate out of respective substrates which are arranged to face each other in an opposed manner by way of liquid crystal. At two pixel regions which are selected from the respective pixel regions, the height of background layers on which the electrodes which constitute the lower layers with respect to the interlayer insulation films are formed differs with respect to a surface of one substrate. The film thickness of the interlayer insulation film is set small with respect to the high background layer out of respective background layers which differ in height and is set large with respect to the low background layer out of respective background layers which differ in height.

Claims2

Dependent claims

A liquid crystal display device being characterized in that:

at respective pixel regions on a liquid-crystal-side surface of one substrate out of respective substrates which are arranged to face each other in an opposed manner by way of liquid crystal,
a pair of electrodes are formed by way of a protective film which is formed by sequentially laminating a first protective film and a second protective film,
the respective electrodes are arranged in a spaced-apart manner in a plan view so as to generate an electric field between electrodes,
the relationship between the film thicknesses d3, d2 of the first protective film and the second protective film on the electrode arranged as a layer below the protective film and the film thicknesses d3′, d2′ of the first protective film and the second protective film on a region between the pair of electrodes satisfies a following formula (5)
d3≈d3′, d2<d2′<d2+d4 (5), and
the relationship between the layer thickness d1 of liquid crystal on the electrode arranged below the protective film and the layer thickness d1′ of the liquid crystal on the region between the pair of electrodes satisfies a following formula (6).
d1≈d1′ (where, d1≦d1′) (6)

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/282,606Filed 21 Nov 2005
Priority: JP 2001-23133331 Jul 2001
Published: 30 Mar 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G02F 1/134363
Characterised by their geometrical arrangement: for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
G02F 1/133371
Constructional arrangements; Manufacturing methods: cells with varying thickness of the liquid crystal layer
G02F 1/136222
Active matrix addressed cells: colour filters incorporated in the active matrix substrate
G02F
Optical devices or arrangements for the control of light by modification of

Family

Application10/173,012Division · filed 18 Jun 2002
Application10/863,752Division · filed 9 Jun 2004
Application11/282,606Division · filed 21 Nov 2005
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