Shift Register Clock Signal Reduction for AMOLED Displays

The shift register circuit is designed to perform multiple functions using a single set of clock signals. The same clock signals control both the scan control shift register function (driving gate lines) and the light-emitting control shift register function (adjusting duty cycle). This is achieved by sharing the clock signal terminals between the two functional blocks, making the circuit universal and multi-functional without requiring separate clock signal sets for each function.

The patent merges the light-emitting control shift register and scan control shift register into a single integrated circuit block. The two functional modules share common components including clock signal terminals, level terminals, and internal circuit structures. By combining these previously separate functions into one unified shift register circuit, the patent achieves dual control functionality while improving driving efficiency through reduced signal paths and eliminated redundancy.

The integrated shift register circuit is designed with universal components that serve dual purposes. The same transistors, capacitors, and clock signal terminals are utilized for both scan control and light-emitting control functions. This multi-functional design reduces the total component count and simplifies the circuit structure, making the integrated circuit more cost-effective to manufacture compared to implementing separate control registers.