METHOD FOR FORMING A LIQUID CRYSTAL DISPLAY PANEL
First Claim
1. A method for forming a liquid crystal display panel (LCD panel), the method comprising:
- providing a substrate, the substrate comprising a pixel array area, a gate pad area, and a source pad area positioned on a surface of the substrate and used for forming a plurality of pixels, a plurality of gate pads, and a plurality of source pads;
depositing a first metal layer on the substrate;
performing a first photo-etching-process (PEP) on the first metal layer to form a plurality of gate electrodes, a plurality of gate bottom pad electrodes, and a plurality of source bottom pad electrodes inside the pixel array area, the gate pad area, and the source pad area;
sequentially forming an insulating layer and a doped semiconductor layer on the substrate;
performing a second PEP on the doped semiconductor layer to form a plurality of active layers inside the pixel array area, and simultaneously remove portions of the doped semiconductor layer inside the gate pad area and the source pad area;
depositing a second metal layer on the substrate;
performing a third PEP on the second metal layer to form a plurality of source electrodes and a plurality of drain electrodes inside the pixel array area, and simultaneously form a plurality of gate top pad electrodes and a plurality of source top pad electrodes inside the gate pad area and the source pad area;
forming a passivation layer on the substrate;
performing a fourth PEP on the passivation layer to form a plurality of via holes inside the pixel array area, and simultaneously remove portions of the passivation layer inside the pixel array area;
forming a plurality of contact holes inside the gate pad area and the source pad area;
forming a transparent conductive layer on the substrate to fill the via holes inside the pixel array area and the contact holes inside the gate pad area and the source pad area; and
performing a fifth PEP to define patterns of the transparent conductive layer.
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Accused Products
Abstract
A plurality of scan lines and gate electrodes are formed on a pixel array area of a substrate, and a plurality of bottom pad electrodes are formed on a gate and a source pad area of the substrate. An insulating layer and a plurality of active layers are formed on the substrate. A plurality of signal lines, source/drain electrodes are formed on the pixel array area, and a plurality of top pad electrodes are formed on the gate and the source pad area. A circuit testing process is performed. A passivation layer having via holes is formed on the pixel array area, and a plurality of contact holes are formed in the gate and the source pad area. A patterned transparent conductive layer filling the via holes and the contact holes is formed on the substrate.
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Citations
37 Claims
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1. A method for forming a liquid crystal display panel (LCD panel), the method comprising:
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providing a substrate, the substrate comprising a pixel array area, a gate pad area, and a source pad area positioned on a surface of the substrate and used for forming a plurality of pixels, a plurality of gate pads, and a plurality of source pads;
depositing a first metal layer on the substrate;
performing a first photo-etching-process (PEP) on the first metal layer to form a plurality of gate electrodes, a plurality of gate bottom pad electrodes, and a plurality of source bottom pad electrodes inside the pixel array area, the gate pad area, and the source pad area;
sequentially forming an insulating layer and a doped semiconductor layer on the substrate;
performing a second PEP on the doped semiconductor layer to form a plurality of active layers inside the pixel array area, and simultaneously remove portions of the doped semiconductor layer inside the gate pad area and the source pad area;
depositing a second metal layer on the substrate;
performing a third PEP on the second metal layer to form a plurality of source electrodes and a plurality of drain electrodes inside the pixel array area, and simultaneously form a plurality of gate top pad electrodes and a plurality of source top pad electrodes inside the gate pad area and the source pad area;
forming a passivation layer on the substrate;
performing a fourth PEP on the passivation layer to form a plurality of via holes inside the pixel array area, and simultaneously remove portions of the passivation layer inside the pixel array area;
forming a plurality of contact holes inside the gate pad area and the source pad area;
forming a transparent conductive layer on the substrate to fill the via holes inside the pixel array area and the contact holes inside the gate pad area and the source pad area; and
performing a fifth PEP to define patterns of the transparent conductive layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 29)
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16. A method for forming a liquid crystal display panel (LCD panel), the method comprising:
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providing a substrate, the substrate comprising a pixel array area, a gate pad area, and a source pad area positioned on a surface of the substrate;
forming a plurality of parallel scan lines on the pixel array area of the substrate, and simultaneously forming a plurality of source bottom pad electrodes on the source pad area of the substrate, each scan line extending into the gate pad area and being electrically connected with each other, and portions of the scan lines positioned inside the gate pad area being used as a plurality of gate bottom pad electrodes;
forming an insulating layer on the substrate;
forming a plurality of signal lines perpendicular to the scan lines on the pixel array area of the substrate, and simultaneously forming a plurality of gate top pad electrodes partially overlapped with an underlying gate bottom pad electrode on the gate pad area of the substrate, each signal line extending into the source pad area and being electrically connected with each other, and portions of the signal lines positioned inside the source pad area being used as a plurality of source top pad electrodes and partially overlapped with an underlying source bottom pad electrode;
forming a plurality of contact holes inside the gate pad area and the source pad area; and
forming a patterned transparent conductive layer on the substrate. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification