Method for forming a self-aligned pixel electrode of an lcd
AssigneeToppoly Optoelectronics Corp.
InventorHsin-Ming Chen
Life of this patent
Estimating the term…
Abstract
A method for forming a self-aligned pixel electrode of a LCD is introduced. The LCD includes a substrate having a plurality of adjacent pixel electrode regions. A joint side is positioned between each pixel electrode region and its adjacent pixel electrode regions. First, a spacer is formed on the joint sides of the pixel electrode regions, and the spacer has an undercut profile. Then, a transparent conductive layer is formed on the substrate, and the transparent conductive layer that covers the pixel electrode regions is separated from the spacer to form a self-aligned pixel electrode.
Claims20
A method for forming a self-aligned pixel electrode of a liquid crystal display (LCD), the LCD being formed on a substrate that comprises a plurality of scan lines and a plurality of signal lines perpendicular to the scan lines, the scan lines and the signal lines defining a plurality of adjacent pixel electrode regions on the substrate, the method comprising the following steps:
- forming a photosensitive material layer on the substrate;
- removing portions of the photosensitive material layer inside the pixel electrode regions to leave a residual photosensitive material layer on the scan lines and the signal lines, wherein the residual photosensitive material layer is used as a spacer, and a top surface area of the spacer is larger than a bottom surface area of the spacer;
- and
- forming a transparent conductive layer on the substrate to cover the spacer and the pixel electrode regions;
- wherein the transparent conductive layer that covers the pixel electrode regions is separated from the spacer so as to form the self-aligned pixel electrode.
A method for forming a self-aligned pixel electrode of a liquid crystal display (LCD), the LCD being formed on a substrate that comprises a plurality of adjacent pixel electrode regions, each of the pixel electrode regions and its adjacent pixel electrodes having a joint side, the method comprising the following steps:
- forming a black matrix layer on the substrate;
- removing portions of the black matrix layer inside the pixel electrode regions to form a residual black matrix layer on the joint sides, the residual black matrix layer having an undercut profile;
- and
- forming a transparent conductive layer on the substrate, the transparent conductive layer covering the pixel electrode regions being separated from the residual black matrix layer so as to form the self-aligned pixel electrode.
Dependencies are inferred from the claim text.