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US 2006/0221278 A1Published application
Liquid crystal display
AssigneeWintek Corporation
InventorsYi-Chun Wu, Wen-Jui Liao
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Abstract
A liquid crystal display includes a liquid crystal polymer film located under a liquid crystal layer. The liquid crystal film has a retardation substantially equal to that of the liquid crystal layer, a twist angle substantially equal to that of the liquid crystal cell, and a twist aspect opposite to that of the liquid crystal layer. As a result, the liquid crystal display has a high contrast ratio.
Claims25
A liquid crystal display, comprising:
- an upper polarizer;
- a lower polarizer;
- a liquid crystal cell located between the upper polarizer and the lower polarizer;
- a liquid crystal film located between the liquid crystal cell and the lower polarizer;
- and
- a backlight unit located below the lower polarizer;
- wherein the liquid crystal cell comprises an upper substrate, a lower substrate, a liquid crystal layer located between the upper substrate and the lower substrate, and a transflective film located between the lower substrate and the liquid crystal layer;
- wherein the liquid crystal film has a retardation substantially equal to that of the liquid crystal cell, a twist angle substantially equal to that of the liquid crystal cell, and a twist aspect opposite to that of the liquid crystal cell.
5 more elements
A liquid crystal display, comprising:
- an upper substrate;
- a lower substrate;
- a liquid crystal layer located between the upper substrate and the lower substrate;
- a liquid crystal film located between the liquid crystal layer and the lower substrate;
- a transflective film located between the liquid crystal layer and the liquid crystal film;
- a lower polarizer located at an outer side of the lower substrate;
- and
- a backlight unit located below the lower substrate;
- wherein the liquid crystal film has a retardation substantially equal to that of the liquid crystal layer, a twist angle substantially equal to that of the liquid crystal layer, and a twist aspect opposite to that of the liquid crystal layer.
6 more elements
A liquid crystal display, comprising:
- an upper substrate;
- a lower substrate;
- a liquid crystal layer located between the upper substrate and the lower substrate;
- a liquid crystal film located between the liquid crystal layer and the lower substrate;
- a transflective film located between the liquid crystal layer and the liquid crystal film;
- a lower polarizer located between the liquid crystal film and the lower substrate;
- and
- a backlight unit located below the lower substrate;
- wherein the liquid crystal film has a retardation substantially equal to that of the liquid crystal layer, a twist angle substantially equal to that of the liquid crystal layer, and a twist aspect opposite to that of the liquid crystal layer.
6 more elements
Dependencies are inferred from the claim text.