Method and system for driving light emitting display

Abstract

A display system includes a driver for operating a panel having a plurality of pixels arranged by a plurality of first lines and at least one second line The driver includes a driver output unit for providing to the panel a single driver output for activating the plurality of first lines, the single driver output being demultiplexed on the panel to activate each first line.

What is claimed is: 
     
       1. A drive system for an LED display panel having a multiplicity of LED pixels arranged in rows and columns, each of said LED pixels having a drive transistor that includes a gate, a source and a drain and an LED coupled to said drive transistor, comprising:
 a gate driver having at least one address cell providing a single gate driver output for multiple rows of pixels of said display panel,   a gate driver multiplexer and a demultiplexer that includes multiple switch blocks coupled to the gate driver and controllably coupling said single gate driver output to said multiple rows of pixels in sequence so that whenever a selected one of said multiple rows is connected to said single gate driver output, all the other said multiple rows are disconnected from said single-game driver output.   
     
     
       2. A display system according to  claim 1 , wherein the gate driver output unit comprises:
 at least one multiplexer, the multiplexer for multiplexing driver signals to provide the single gate driver output.   
     
     
       3. A display system according to  claim 2 , wherein the panel comprises:
 a demultiplexer having a plurality of switch blocks for activating the first lines, each switch block receiving outputs from the at least one multiplexer.   
     
     
       4. A display system, comprising:
 a light emitting device (LED) display panel having a multiplicity of LED pixels arranged in rows and columns, each of said pixels having a drive transistor that includes a gate, a source and a drain; and   a gate driver including:
 an address cell for providing at least one single gate driver signal; and 
 a multiplexer for multiplexing driver signals to provide the least one single gate driver signal for multiple rows of LED pixels of said LED display panel, 
   
       the LED display panel including a demultiplexer for demultiplexing said single gate driver signal and including multiple switches for controllably coupling said multiple rows of pixels such that when a selected one of said multiple rows is connected to said single gate driver signal, all the other said multiple rows are disconnected from said single-gate driver signal. 
     
     
       5. A display system according to claim 4, wherein the demultiplexer is further for receiving the single gate driver signal from the multiplexer and for activating the multiple rows. 
     
     
       6. A display system according to claim 4, wherein the multiple switches of the LED display panel are further for controllably coupling said multiple rows of LED pixels such that when a selected one of said multiple rows is connected to said single gate driver signal, all the other said multiple rows are connected to a ground level voltage. 
     
     
       7. A method of driving a light emitting device (LED) display panel having a multiplicity of LED pixels arranged in rows and columns, each of said pixels having a drive transistor that includes a gate, a source and a drain, said method comprising:
 multiplexing driver signals with use of an address cell and a multiplexer in a gate driver to generate a single gate driver signal;   providing the single gate driver signal for multiple rows of said LED pixels of said LED display panel by demultiplexing the single gate driver signal with a demultiplexer of the LED display panel; and   controllably coupling said multiple rows of LED pixels such that when a selected one of said multiple rows is connected to said single gate driver signal, all the other said multiple rows are disconnected from said single-gate driver signal.   
     
     
       8. A method according to claim 7, wherein controllably coupling said multiple rows of LED pixels is such that when a selected one of said multiple rows is connected to said single gate driver signal, all the other said multiple rows are connected to a ground level voltage.