Panel for liquid crystal display device

Abstract

A panel of a liquid crystal display panel with a plurality of pixels is disclosed, wherein each pixel comprises one switch, one pixel electrode and one floating line. The switch comprises a gate, a source, and two drains. The pixel electrode can be electrically connected to the switch through the drain. Besides, each floating conductive line and two drains of the same switch are crossed but electrically disconnected. Hence, the design of the dual drain (or dual source) illustrated above and the combined the technique of laser welding can be used to repair the source-drain leakage of the substrate of the liquid crystal display device.

1 . A substrate of a liquid crystal display device, comprising a plurality of pixels, wherein each pixel comprises:
 a switch having a gate, a source and two drains;   a pixel electrode electrically connected to the switch through the drains; and   a floating conductive line crossed the drains without electrical connection.   
     
     
         2 . The substrate of  claim 1 , further comprising:
 a data line that is electrically connected to the source; and   a gate conductive line that is electrically connected to the gate.   
     
     
         3 . The substrate of  claim 1 , further comprising a capacitor conductive line that is electrically connected to the drain, and the drain can electrically connected with the pixel electrode through the capacitor conductive line. 
     
     
         4 . The substrate of  claim 3 , wherein the capacitor conductive line further comprises a top capacitor lead, and a bottom capacitor lead, and the top capacitor lead overlaps the bottom capacitor lead without electrical connection. 
     
     
         5 . The substrate of  claim 4 , wherein the top capacitor lead has at least one contact hole for electrically connecting the pixel electrode and the top capacitor lead. 
     
     
         6 . The substrate of  claim 1 , wherein the pixel electrode is made of tin indium oxide or zinc indium oxide. 
     
     
         7 . The substrate of  claim 2 , wherein the floating conductive line and the gate conductive line are made of the same material. 
     
     
         8 . A method for repairing a pixel of a liquid crystal display device, comprising following steps:
 (A) providing a substrate having a plurality of pixels thereon, wherein each pixel comprises: a switch having a gate, a source and two drains; a pixel electrode; and a floating conductive line; the pixel electrode electrically connects to the switch through the drain, and the floating conductive line crosses the two drain s without electrical connection;   (B) cutting one of the two drains, wherein the location of the cut on the drain is not between the crossed position of the drain and the floating conductive line and the switch; and   (C) checking the pixel through charging the source and the gate on the substrate.   
     
     
         9 . (canceled) 
     
     
         10 . The method of  claim 8 , wherein the drain is cut by YAG laser, ruby laser, or CO2 laser. 
     
     
         11 - 12 . (canceled) 
     
     
         13 . A substrate for a liquid crystal display device, comprising:
 a plurality of pixels, wherein each pixel comprises:   a switch having a gate, a drain and two sources;   a pixel electrode electrically connected to the switch through the drain; and   a floating conductive line crossed the two sources without electrical connection.   
     
     
         14 . The substrate of  claim 13 , further comprising a gate conductive line that is electrically connected to the gate. 
     
     
         15 . The substrate of  claim 13 , further comprising a capacitor conductive line that is electrically connected to the drain, and the drain can electrically connected to the pixel electrode through the capacitor conductive line, and the drain can electrically connected with the pixel electrode through the capacitor conductive line. 
     
     
         16 . The substrate of  claim 15 , wherein the capacitor conductive line further comprises a top capacitor lead, and a bottom capacitor lead, and the top capacitor lead overlaps the bottom capacitor lead without electrical connection. 
     
     
         17 . The substrate of  claim 16 , wherein the top capacitor lead has at least one contact hole for electrically connecting the pixel electrode and the top capacitor lead. 
     
     
         18 . The substrate of  claim 13 , wherein the pixel electrode is made of tin indium oxide or zinc indium oxide. 
     
     
         19 . The substrate of  claim 14 , wherein the floating conductive line and the gate conductive line are made of the same material. 
     
     
         20 . A method for repairing a pixel of a liquid crystal display device, comprising following steps:
 (A) providing a substrate having a plurality of pixels thereon, wherein each pixel comprises: a switch having a gate, a drain and two sources; a pixel electrode; and a floating conductive line; the pixel electrode electrically connects to the switch through the drain, and the floating conductive line crosses with the two sources without electrical connection;   (B) cutting one of the two sources, wherein the location of the cut on the source is not between the crossed position of the source and the floating conductive line and the switch; and   (C) checking the pixel through charging the source and the gate on the substrate.   
     
     
         21 . (canceled) 
     
     
         22 . The method of  claim 20 , wherein the source is cut by YAG laser, ruby laser, or CO2 laser. 
     
     
         23 - 24 . (canceled)