US 5,852,485 AGranted

Liquid crystal display device and method for producing the same

AssigneeSharp Kabushiki Kaisha

InventorsYoshinori Shimada, Tetsuro Koyama, Hirohiko Nishiki, Yoshiharu Kataoka

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Abstract

A liquid crystal display device includes an active-matrix substrate; a counter substrate; and a liquid crystal layer interposed between the active-matrix substrate and the counter substrate. The active-matrix substrate includes a plate; gate lines provided on the plate; a gate insulation layer provided on the plate; source lines provided on the gate insulation layer and Refining picture element areas together with the gate lines; switching elements provided at intersections of gate lines and the source lines, the switching elements each including a source electrode and a drain electrode as well as a gate electrode, connecting electrodes each connected to the drain electrode; an interlayer insulation layer provided on the gate insulation layers covering the gate lines, the source lines, and the switching elements; and picture element electrodes and counter electrodes provided on the interlayer insulation layer for driving liquid crystal molecules in the liquid crystal layer. The picture element electrodes are provided in a first direction of the picture element areas, and the counter electrodes are provided in the first direction of the picture element areas and extending over picture element areas.

Claims15

Dependent claims

An active-matrix substrate comprising:

an insulation substrate;
a plurality of switching elements arranged in a matrix on the insulation substrate;
a plurality of first signal lines for supplying a signal for controlling the switching elements to the switching elements;
a plurality of second signal lines for supplying a date signal to the switching elements, arranged so as to cross the first signal lines;
an interlayer insulation film having first contact holes formed therethrough, formed so as to cover the switching elements, the first signal lines, and the second signal lines;
a plurality of picture element electrodes formed on the interlayer insulation film, electrically connected to the switching elements through the contact holes;
and
a plurality of counter electrodes formed on the interlayer insulation film,
wherein the counter electrodes are formed along the second signal lines so as to face the second signal lines through the interlayer insulation film,
the plurality of picture element electrodes are arranged in a same direction in which the counter electrodes are formed, and
the plurality of picture element electrodes and the counter electrodes are alternately arranged so that the picture element electrodes and the counter electrodes are disposed at substantially equal intervals.

8 more elements

Dependencies are inferred from the claim text.