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US 2007/0182886 A1Published application
Liquid crystal display panel and device thereof
AssigneeInternational Business Machines Corporation
InventorsTakatoshi Tsujimura, Hiroyuki Kamiya
Life of this patent
Estimating the term…
Abstract
A liquid crystal display capable of improving the brightness without depending on the aperture ratio. By setting a lower polarization plate between an array substrate and a color filter substrate, the light reflected from a metal film formed on the array substrate can directly return to a light guide plate. Therefore, the light recycling efficiency is improved and the brightness of the liquid crystal display is improved.
Claims9
A liquid crystal display panel, comprising:
- an array substrate including a driving element for controlling a driving voltage and a display electrode to which a voltage is applied through the driving element are formed;
- a first polarization layer for polarizing the light passing through the array substrate;
- a liquid crystal layer including a liquid crystal material;
- a color filter substrate on which a color filter comprising a color-material film is formed;
- and
- a second polarization layer for polarizing the light passing through the color filter substrate,
- wherein the array substrate, the first polarization layer, the liquid crystal layer, the color filter substrate, and the second polarization layer are successively superposed;
- wherein a common electrode is formed on the color filter substrate and an electric filed is generated in a direction vertical to the array substrate by applying a voltage between the display electrode and the common electrode.
5 more elements
A liquid crystal display device, comprising:
- a liquid crystal display panel in which an array substrate and a color filter substrate are arranged to sandwich a liquid crystal layer;
- and
- a backlight unit for applying light to the liquid crystal display panel from the outside of the array substrate,
- wherein the light reflected from the array substrate of the liquid crystal display panel directly returns to the backlight unit without passing through other layers, wherein:
- a polarization layer is disposed between the array substrate and the color filter substrate of the liquid crystal display panel;
- and
- the light reflected from the array substrate returns to the backlight unit without passing through the polarization layer so as to improve the light-recycling efficiency of the backlight unit.
4 more elements
A liquid crystal display device, comprising:
- a liquid crystal display panel in which an array substrate and a color filter substrate are arranged to sandwich a liquid crystal layer including a liquid crystal material and a reflection film is formed in an area on the array substrate corresponding to an area in the liquid crystal layer in which the liquid crystal material is oriented in a not-purposed direction when applying a voltage to the liquid crystal layer;
- and
- a backlight unit for illuminating the liquid crystal display panel from the outside of the array substrate,
- wherein a display electrode and a wiring conductively connected to the display electrode are formed on the array substrate, and
- wherein the reflection film is formed on a gap between the display electrode and the wiring.
2 more elements
A liquid crystal display panel, comprising:
- an array substrate on which a driving element for controlling a driving voltage and a display electrode to which a voltage is applied through the driving element are formed;
- a liquid crystal layer filled with the liquid crystal material;
- and
- a color filter substrate on which a color filter comprising a color-material film is formed,
- the array substrate, the liquid crystal layer, and the color filter substrate being successively superposed,
- wherein a metal film is formed in an area of the array substrate corresponding to an area in which an electric field including a direction different from the original direction of an electric field for driving the liquid crystal material is generated, and
- wherein the metal film is formed on a gap between the display electrode and the driving element.
4 more elements
Dependencies are inferred from the claim text.