Front-side repairable TFT-LCD and method for making
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United States of America Patent
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Mar 30, 2004
Grant Date -
N/A
app pub date -
Mar 22, 1999
filing date -
Mar 22, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A front-side repairable TFT-LCD assembly and a method for fabricating such repairable assembly are disclosed. In the assembly, at least one repair line that is positioned outside of and in parallel with a circuitry on the TFT-LCD is first laid out, while a black matrix film is coated on a glass substrate and patterned/formed with a multiplicity of apertures by a photolithographic/etching method. The multiplicity of apertures allows a repair laser to go through the apertures for effectuating a repair on a gate busline or on a data busline at a cross-over point with a repair line. The present invention further discloses a method for repairing a front-side repairable TFT-LCD assembly by first providing a front-side repairable assembly, then testing the assembly to locate defective circuit in a circuitry, and then irradiating a laser beam through a multiplicity of apertures in the black matrix film coated inside the LCD assembly to carry out a repair on the at least one defective circuit.
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