Array substrate for in-plane switching liquid crystal display device and manufacturing method of the same
AssigneeLG.Philips LCD Co., Ltd.
InventorKi-Bok Park
Life of this patent
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Abstract
An array substrate for an in-plane switching liquid crystal display device includes a substrate, a gate line and a data line crossing each other to define a pixel region on the substrate, a thin film transistor being electrically connected to the gate and data lines, a common line parallel to the gate line, a plurality of common electrodes being perpendicularly connected to the common line, and a plurality of pixel electrodes alternating with the plurality of common electrodes, wherein each common electrode has at least one first incline plane.
Claims24
An array substrate for an in-plane switching liquid crystal display device, comprising:
- a substrate;
- a gate line and a data line on the substrate, the gate and data lines crossing each other to define a pixel region;
- a thin film transistor electrically connected to the gate and data lines;
- a common line parallel to the gate line;
- a passivation layer on the thin film transistor;
- a plurality of common electrodes formed on the passivation layer and perpendicularly connected to the common line, wherein each of the plurality of common electrodes adjacent the data line has a single flat plane overlapping the data line and a single first incline plane extending from the single flat plane;
- a plurality of pixel electrodes alternating with the plurality of common electrodes;
- and
- a plurality of passivation patterns extending from the passivation layer and located under the plurality of common electrodes, the plurality of passivation patterns having at least one second incline plane corresponding to the at least one first incline plane,
- wherein the at least one first incline plane slopes with an incline angle of about 45 degrees with respect to the substrate.
The array substrate according 1, wherein a width along a cross-sectional surface of each common electrode or pixel electrode is within a range of about 5.5 to 6 μm.
A method of manufacturing an array substrate for an in-plane switching liquid crystal display device, comprising:
- forming a gate line on a substrate;
- forming a data line crossing the gate line;
- forming a thin film transistor electrically connected to the gate and data lines;
- forming a common line parallel to the gate line;
- forming a passivation layer on the data line and the thin film transistor and patterning the passivation layer;
- forming a plurality of common electrodes on the passivation layer, the plurality of common electrodes perpendicularly connected to the common line, wherein each of the plurality of common electrodes adjacent the data line has a single flat plane overlapping the data line and a single first incline plane extending from the single first plane;
- forming a plurality of pixel electrodes on the passivation layer, the plurality of pixel electrodes alternating with the plurality of common electrodes;
- and
- forming a plurality of passivation patterns to extend from the passivation layer, wherein the plurality of passivation patterns have at least one incline plane corresponding to the first incline plane of the common electrodes,
- wherein the at least one first incline plane slopes with an incline angle of about 45 degrees with respect to the substrate.
Dependencies are inferred from the claim text.