Shift Register Stabilizing Circuit for AMOLED Brightness
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Solution Overview
Problem
The complexity of adjusting pixel brightness in AMOLED display devices requires intricate row-by-row adjustments of pulse widths, leading to reduced production efficiency and user inconvenience due to varying ambient light conditions.
Innovation Solution
A shift register unit comprising a stabilizing circuit, first and second input circuits, and first and second output circuits, which stabilize node potentials to prevent signal output from alternate circuits, allowing for efficient pulse width adjustments through a single stage, simplifying the process of changing display brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If row-by-row pulse width adjustment is implemented to adapt to different ambient light conditions, then display brightness adaptability is improved, but the adjustment process complexity increases and production efficiency decreases
Solution Approach 1:
The shift register unit is divided into two independent output circuits (first output circuit and second output circuit) with separate control nodes (first node and second node). Each output circuit can be independently controlled to output signals or stabilize potentials, enabling flexible brightness adjustment without complex row-by-row modifications.
Solution Approach 2:
The stabilizing circuit serves multiple functions: it can stabilize the potential of the second node when the first output circuit is active, or stabilize the potential of the first node when the second output circuit is active. This multi-functional design simplifies the overall adjustment mechanism while maintaining adaptability.
2Adaptability or versatility
If row-by-row pulse width adjustment is implemented to adapt to different ambient light conditions, then display brightness adaptability is improved, but production efficiency decreases
Solution Approach 1:
By segmenting the output into two independently controllable circuits within each shift register unit, the system can adjust brightness through simple control signal modifications rather than complex row-by-row adjustments, thereby improving production efficiency while maintaining adaptability.
Solution Approach 2:
The invention changes the control parameter from complex row-by-row pulse width adjustments to simpler control signals that activate different output circuits or stabilizing modes. This parameter change simplifies the adjustment process and improves production efficiency while achieving the same brightness adaptation goal.
Data Source
AI summary
The present disclosure provides a shift register unit, a driving method thereof, a gate drive circuit, and a display device, and relate to the field of display technology. When a user's demand is changed, it is not necessary to regulate a pulse width of a signal inputted to a pixel circuit row by row, and a signal outputted from the shift register unit to the pixel circuit is stable. The shift register unit includes a first input circuit, a first output circuit, a second input circuit, a second output circuit, and a stabilizing circuit. The stabilizing circuit is configured to, when the first output circuit outputs a signal to a signal output terminal, stabilize a potential of a second node so that no signal is outputted from the second output circuit; or, when the second output circuit outputs a signal to the signal output terminal, stabilize a potential of a first node so that no signal is outputted from the first output circuit.