Liquid crystal display and method of charging/discharging pixels of a liquid crystal display

Abstract

A liquid crystal display includes a liquid crystal panel, a source driving circuit, a timing controller, and a gate driving circuit. The source driving circuit converts frame data into a plurality of data voltages, and charges/discharges a first data line according to a data voltage of the plurality of data voltages. The gate driving circuit enables a gate line corresponding to the data voltage. The timing controller sequentially enables a plurality of switch enable lines corresponding to the gate line. A plurality of pixel switches are turned on according to the enabled gate line. A data line switch is turned on according to an enabled switch enable line. The data voltage charges/discharges a corresponding pixel through the turned-on data line switch and one of the turned-on pixel switches.

1 . A liquid crystal display (LCD) comprising:
 an LCD panel comprising a plurality of pixels, wherein each pixel of the plurality of pixels is coupled to a corresponding pixel switch;   a source driving circuit for converting image data into a plurality of data voltages and enabling M first data lines, wherein M is a positive integer, each first data line of the M first data lines corresponds to a plurality of data line switches, and the first data line charges/discharges according to a data voltage corresponding to the first data line, wherein each data line switch of the plurality of data line switches corresponds to one second data line and one switch enable line of a plurality of switch enable lines;   a gate driving circuit for enabling N gate lines, wherein N is a positive integer; and   a timing controller for enabling the plurality of switch enable lines;   wherein enable signals of a gate line and a next gate line corresponding to the gate line are partially overlapping.   
     
     
         2 . The liquid crystal display of  claim 1 , wherein the length of an enable signal of each gate line of the N gate lines is equal to the sum of lengths of enable signals of the plurality of switch enable lines. 
     
     
         3 . The liquid crystal display of  claim 1 , wherein the length of an enable signal of each gate line of the N gate lines is larger than the sum of lengths of enable signals of the plurality of switch enable lines. 
     
     
         4 . The liquid crystal display of  claim 1 , wherein the pixel switch is an N-type thin-film transistor or a P-type thin-film transistor. 
     
     
         5 . The liquid crystal display of  claim 1 , wherein the data line switches are N-type thin-film transistors or P-type thin-film transistors. 
     
     
         6 . The liquid crystal display of  claim 1 , wherein a plurality of pixels corresponding to the gate line continue to be charged/discharged by a plurality of second data lines corresponding to the gate line when the enable signals of the gate line and the enable signals of the next gate line overlap. 
     
     
         7 . The liquid crystal display of  claim 1 , wherein each data line switch has a first terminal coupled to a corresponding first data line, a second terminal coupled to a corresponding switch enable line, and a third terminal coupled to a corresponding second data line. 
     
     
         8 . The liquid crystal display of  claim 1 , wherein each pixel switch has a first terminal coupled to a corresponding pixel, a second terminal coupled to a corresponding gate line, and a third terminal coupled to a corresponding second data line. 
     
     
         9 . The liquid crystal display of  claim 1 , wherein neighboring pixel switches of each row of pixels of the LCD panel turn on and turn off according to enable signals of two gate lines corresponding to the row of pixels, and each pixel of the row of pixels is charged/discharged to a specific voltage according to a data voltage of a second data line corresponding to the pixel. 
     
     
         10 . The liquid crystal display of  claim 1 , wherein each pixel switch of each row of pixels of the LCD panel turns on and turns off according to an enable signal of a gate line corresponding to the row of pixels, and neighboring pixels of each row of pixels of the LCD panel are charged/discharged to a specific voltage according to data voltages of two second data lines corresponding to the row of pixels. 
     
     
         11 . A method of charging/discharging pixels of a liquid crystal display (LCD), the liquid crystal display comprising an LCD panel, a plurality of switch enable lines, a source driving circuit and a gate driving circuit, the method comprising:
 converting image data into a plurality of data voltages;   charging/discharging a first data line corresponding to a data voltage of the plurality of data voltages according to the data voltage;   enabling a gate line corresponding to the first data line of a plurality of gate lines;   sequentially enabling all switch enable lines corresponding to the gate line of a plurality of switch enable lines;   turning on a plurality of pixel switches corresponding to a gate line that is asserted according to the gate line;   turning on a data line switch corresponding to switch enable lines that are asserted according to the switch enable lines;   charging/discharging a second data line corresponding to a data line switch that is turned on through the data line switch by the data voltage; and   charging/discharging a pixel corresponding to a pixel switch that is turned on of the plurality of pixel switches through the pixel switch by the second data line that is being charged/discharged;   wherein enable signals of the gate line and a next gate line corresponding to the gate line are partially overlapping.   
     
     
         12 . The method of  claim 11 , wherein a plurality of pixels being charged/discharged during the enable signal of the gate line are on a same row as a plurality of pixels being charged/discharged by the enable signal of the next gate line. 
     
     
         13 . The method of  claim 11 , wherein a plurality of pixels being charged/discharged during the enable signal of the gate line and a plurality of pixels being charged/discharged by the enable signal of the next gate line are neighboring rows of pixels. 
     
     
         14 . The method of  claim 11 , wherein a plurality of second data lines corresponding to the gate line continue to charge/discharge pixels corresponding to the gate line when the enable signals of the gate line and the enable signals of the next gate line overlap. 
     
     
         15 . The method of  claim 11 , wherein length of the enable signal of the gate line is equal to the sum of lengths of enable signals of the plurality of switch enable lines. 
     
     
         16 . The method of  claim 11 , wherein length of the enable signal of the gate line is larger than the sum of lengths of enable signals of the plurality of switch enable lines.