LCD device having a reflective electrode and a fabricating method thereof
AssigneeLG.Philips LCD Co., Ltd.
InventorsSung-Il Park, Jae-Young Chung
Life of this patent
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Abstract
A method of fabricating a liquid crystal display device includes forming an embossed reflective electrode. In the method, the embossed reflective electrode is embossed via a dry-etching method with a mixture of SF6+O2 or CF4+O2 gases, or with oxygen gas, such that a plurality of small concave and convex portions are formed on the reflective electrode. Since the concave and convex portions of the reflective electrode diffuse light, high luminance and wide viewing angle can be achieved.
Claims28
A fabricating method for an array substrate of a liquid crystal display device, the method comprising:
- forming a gate line including a gate electrode on a substrate;
- forming a gate-insulating layer on the substrate, the gate-insulating layer covering the gate line and gate electrode;
- forming an active layer on the gate-insulating layer;
- forming a data line, a source electrode and a drain electrode on the active layer;
- forming a passivation layer on the gate-insulating layer, the passivation layer covering the data line, source electrode and drain electrode;
- dry-etching a surface of the passivation layer with a gas such that the surface is embossed;
- and
- forming a reflective electrode on the embossed surface of the passivation layer such that an exterior surface of the reflective electrode is embossed.
A liquid crystal display device comprising:
- upper and lower substrates with a liquid crystal layer interposed therebetween;
- a gate line and a gate electrode on the lower substrate;
- a gate-insulating layer on the lower substrate, the gate-insulating layer covering the
- gate line and gate electrode;
- an active layer on the gate-insulating layer;
- a source electrode and a drain electrode on the active layer;
- a data line on the gate-insulating layer;
- a passivation layer on the data line, source electrode, and drain electrode;
- and
- an embossed reflective electrode on the passivation layer.
A method of fabricating an array substrate for a liquid crystal display device, the method comprising:
- forming a gate line including a gate electrode on a substrate;
- forming a first insulating layer on the substrate, the first insulating layer covering the gate line and gate electrode;
- forming an active layer on the first insulating layer;
- forming a data line, a source electrode and a drain electrode on the active layer;
- forming a second insulating layer on the data line, source electrode and drain electrode;
- forming a first contact hole in the second insulating layer, exposing a first portion of the drain electrode;
- forming a transparent electrode contacting the drain electrode via the first contact hole;
- forming a passivation layer on the first insulating layer and transparent electrode;
- forming a second contact hole in the passivation layer and the second insulating layer, exposing a second portion of the drain electrode;
- dry-etching a surface of the passivation layer with a gas such that the surface is embossed;
- and
- forming a reflective electrode on the embossed surface of the passivation layer such that an exterior surface of the reflective electrode is embossed.
A liquid crystal display device comprising:
- upper and lower substrates with a liquid crystal layer interposed therebetween;
- a gate line and a gate electrode on the lower substrate;
- a first insulating layer on the lower substrate, the first insulating layer covering the gate line and gate electrode;
- an active layer on the gate-insulating layer;
- a source electrode and a drain electrode on the active layer;
- a data line on the gate-insulating layer;
- a second insulating layer on the data line, source electrode and drain electrode;
- a transparent electrode on the second insulating layer;
- a passivation layer on the second insulating layer and the transparent electrode;
- and
- an embossed reflective electrode on the passivation layer.
Dependencies are inferred from the claim text.