Shift Register Unit Independent Reset Circuit
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Solution Overview
Problem
Existing shift register units in display technology fail to reset independently, leading to improper operation of the array substrate and liquid crystal displays due to delayed or missing reset signals from adjacent units.
Innovation Solution
A shift register unit design incorporating specific switching transistors and capacitors allows for autonomous reset without relying on signals from adjacent units, ensuring proper operation by utilizing a sampling, output, and reset structure with inverted clock signals and capacitors to manage signal levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the reset of the previous shift register unit is controlled by the following shift register unit, then the shift register units can share reset control, but if the reset signal fails to be fed back or is delayed, the previous shift register unit will not stop outputting
Solution Approach 1:
Each shift register unit is equipped with its own reset control circuit that can independently generate reset signals without relying on feedback from adjacent units. The reset control circuit includes a reset signal generation unit that produces reset signals based on local clock signals, enabling each unit to reset itself independently and reliably
Solution Approach 2:
The reset control function is segmented and distributed to each individual shift register unit through local reset control circuits. Instead of a centralized reset control mechanism that relies on signal propagation between units, each unit has its own reset control circuit that operates independently, eliminating the dependency chain that causes reliability issues
2Ease of operation
If shift register units rely on feedback reset signals from adjacent units, then reset control can be simplified, but delayed or missing feedback signals cause operational failures
Solution Approach 1:
Each shift register unit generates its own reset signals independently using local clock signals, eliminating the need to wait for feedback from adjacent units. The reset signal generation unit uses the same clock signals that drive the shift register operation, ensuring timely and reliable reset without dependency on neighboring units
Solution Approach 2:
The reset control circuit is designed to generate reset signals in advance based on the clock signal timing, ensuring that reset actions are performed at the correct moments without waiting for feedback. This preliminary generation of reset signals based on clock edges ensures timely operation
Data Source
AI summary
The present disclosure relates to a field of display. Particularly, embodiments of the present invention disclose a shift register unit, a shift register, an array substrate and a display apparatus that enable the respective shift register units to be reset independently. The shift register unit includes a sampling part, an output part and a reset part, wherein the sampling part includes a first switching transistor and a second switching transistor, the output part includes a fifth switching transistor, a sixth switching transistor, a first capacitor and a second capacitor, and the reset part includes a third switching transistor and a fourth transistor.