Laser repair facilitated pixel structure and repairing method
AssigneeAu Optronics Corporation
InventorHan-Chung Lai
Life of this patent
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Abstract
A laser repair facilitated pixel structure and repair method. The pixel structure includes a thin film transistor, a pixel electrode, and a conductive line. Control of the pixel structure is carried out through signals passing to a scan line and a data distributing line. The conductive line is underneath the data distributing line. The conductive line has a connective section and a repair section at each end of the connective section. Each repair section occupies an area greater than the data distributing line. A broken data distributing line is repaired through the formation of an electrical connection between the repair sections at each end of the conductive line and the data distributing line.
Claims18
A pixel structure on a substrate board, comprising:
- a thin film transistor over the substrate board, wherein the thin film transistor has a gate electrode, a source terminal, and a drain terminal;
- a scan line over the substrate board, wherein the scan line and the gate electrode are electrically connected;
- a pixel electrode over the substrate board, wherein the pixel electrode is positioned close to the thin film transistor;
- a data distributing line over the substrate board, wherein the data distributing line and the pixel electrode are electrically connected to the source terminal and the drain terminal respectively;
- a conductive line underneath the data distributing line, wherein the conductive line has a connective section and a repair section at each end of the connective section, and the repair section covers an area larger than the data distributing line;
- a first dielectric layer above the substrate board for isolating the conductive line and the data distributing line electrically;
- and
- a second dielectric layer above the substrate board that covers the data distributing line.
A pixel structure on a substrate board, comprising:
- a thin film transistor over the substrate board, wherein the thin film transistor has a gate electrode, a source terminal and a drain terminal;
- a scan line over the substrate board, wherein the scan line and the gate electrode are electrically connected;
- a pixel electrode over the substrate board, wherein the pixel electrode and the thin film transistor are close to each other;
- a data distributing line over the substrate board, wherein the data distributing line and the pixel electrode are electrically connected to the source terminal and the drain terminal respectively;
- a conductive line underneath the data distributing line, wherein the conductive line includes a connective section and, at each end of the connective section, a contact section and a repair section, and the contact section and the repair section occupy an area greater than the area covered by the data distributing line;
- a conductive structure over the contact section of the conductive line so that the contact section and the data distributing line are electrically connected;
- a first dielectric layer above the substrate board for isolating the conductive line and the data distributing line electrically;
- and
- a second dielectric layer above the substrate board that covers the data distributing line.
A laser repair method, comprising the steps of:
- providing a substrate board having a distributing line thereon, wherein a dielectric layer covers the distributing line and the distributing line has a broken region;
- forming an opening in the dielectric layer above the broken region so that the broken region and the distributing line at each end of the broken region are exposed;
- and
- forming a conductive layer over the exposed broken region and the distributing line at the end of the broken region so that the distributing line is reconnected electrically through the conductive layer.
Dependencies are inferred from the claim text.