Liquid crystal display with a uniform common voltage and method thereof
AssigneeAu Optronics Corporation
InventorYang-En Wu
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Abstract
An LCD with a uniform common voltage and a method thereof. The present invention method includes providing a lower substrate, forming scan lines and data lines, then forming common electrodes and common electrode pads electrically connecting the common electrodes. The method also includes providing an upper substrate, forming photo spacers corresponding to each of the electrode pad, then forming a conductive material layer covering each photo spacer, combining the two substrates and connecting the conductive material layer on the photo spacers to the common electrode pads, and sealing the two substrates.
Claims16
A method for fabricating a liquid crystal display (LCD) with a uniform common voltage, the method comprising:
- providing a lower substrate having a display area and a non-display area;
- forming a plurality of scan lines, a plurality of common electrodes, and a plurality of common electrode pads on an upper surface of the lower substrate, wherein the common electrodes are used for transmitting a common voltage, and the common electrode pads are electrically connected to the common electrodes;
- forming a plurality of data lines on the upper surface of the lower substrate, wherein the data lines are arranged perpendicular to the scan lines to form a pixel matrix in the display area, the pixel matrix comprising a plurality of pixels;
- providing an upper substrate;
- forming a plurality of photo spacers on a bottom surface of the upper substrate, each photo spacer corresponding to one of the common electrode pads on the lower substrate;
- forming a conductive material layer on the bottom surface of the upper substrate to make the conductive material layer cover the surface of the photo spacers;
- combining the upper substrate and the lower substrate face to face by using the photo spacers to support a space between the upper substrate and the lower substrate, and electrically connecting the conductive material layer covering the surface of each of the photo spacers to the common electrode pads corresponding to each of the photo spacers;
- and
- filling a plurality of liquid crystal molecules in the space between the upper substrate and the lower substrate, and sealing the space between the upper substrate and the lower substrate.
An LCD with a uniform common voltage, the LCD comprising:
- a lower substrate having a display area and a non-display area on an upper surface thereof, the lower substrate comprising:
- a plurality of scan lines and a plurality of data lines, wherein the data lines are arranged perpendicular to the scan lines to form a pixel matrix in the display area, the pixel matrix comprising a plurality of pixels;
- a plurality of common electrodes for transmitting a common voltage;
- and
- a plurality of common electrode pads electrically connected to the common electrodes;
- an upper substrate positioned on the lower substrate oppositely, the upper substrate comprising:
- a plurality of photo spacers positioned on a bottom surface of the upper substrate for supporting a space between the upper substrate and the lower substrate, wherein each of the photo spacers corresponds to one of the common electrode pads of the lower substrate;
- and
- a conductive material layer positioned on the bottom surface of the upper substrate covering the photo spacers, wherein the conductive material layer covering the photo spacers is connected to each of the common electrode pads corresponding to each of the photo spacers;
- and
- a plurality of liquid crystal molecules filled in the space between the upper substrate and the lower substrate.
Dependencies are inferred from the claim text.