Pixel structure

Abstract

A pixel structure is provided. The pixel structure comprises a scan line, a data line, a pixel electrode and a thin film transistor. The data line branches out into a plurality of subsidiary lines in the area above the scan line. If there is a short circuit between the scan line and the data line, the short circuit can be repaired by cutting the connections to one of the branching subsidiary lines. In one embodiment of this invention, a repair line is set up on one side of the data line such that a portion of the repair line crosses over the scan line. If there is a short circuit between the scan line and the data line, a laser repair operation can be carried out through the repair line.

1 . A pixel structure formed on a transparent substrate, comprising: 
 a first conductive layer formed on a transparent substrate, wherein the first conductive layer comprises a scan line and a gate, the gate and the scan line being electrically connected together;    a first dielectric layer formed on the transparent substrate covering the first conductive layer; a channel layer formed over the first dielectric layer above the gate;    a second conductive layer formed over the first dielectric layer, wherein the second conductive layer comprises a data line, a repair line and a source/drain such that the gate, the channel layer and the source/drain together constitute a thin film transistor, and the repair line is positioned on one side of the data line with a portion of the repair line crossing over the scan line;    a second dielectric layer formed on the first dielectric layer covering the second conductive layer; and    a pixel electrode formed over the second dielectric layer, wherein the pixel electrode, the data line and the source/drain are electrically connected together.    
   
   
       2 . The pixel structure of  claim 1 , wherein the repair line furthermore comprises a first end and a second end such that the first end of the repair line and the data line are electrically connected but the second end of the repair line has no electrical connection with the data line.  
   
   
       3 . The pixel structure of  claim 1 , wherein the repair line furthermore comprises a first end and a second end such that both the first end and the second end have no electrical connection with the data line.  
   
   
       4 . The pixel structure of  claim 1 , wherein the second dielectric layer has a contact opening such that the pixel electrode and the source/drain are electrically connected through a contact inside the contact opening.  
   
   
       5 . The pixel structure of  claim 1 , wherein material constituting the pixel electrode is selected from a group consisting of indium-tin oxide and indium-zinc oxide.