External Compensation Sensing Circuit With Dual Output Stages

The patent implements dynamic response time for different gray levels by configuring different transistor width-to-length ratios in the output stage. For low gray levels, a smaller ratio provides slower response to avoid overshoot; for high gray levels, a larger ratio provides faster response. This dynamic adaptation resolves the contradiction by optimizing response time and power consumption based on actual operating conditions.

The patent changes the width-to-length ratio parameter of MOS transistors in different output circuits to optimize performance. The first output circuit uses a first width-to-length ratio while the second output circuit uses a second width-to-length ratio, allowing the system to adjust electrical parameters dynamically based on gray level requirements, thereby improving response time while managing power consumption.

The patent divides the output stage into two separate output circuits (first output circuit and second output circuit) with different transistor configurations. Each circuit handles specific gray level ranges, segmenting the overall function to achieve optimized response speeds without requiring all transistors to have high width-to-length ratios, thus reducing overall circuit complexity while maintaining fast response where needed.

The patent applies different width-to-length ratios to different parts of the circuit based on local requirements. The first output circuit uses one ratio optimized for certain gray levels, while the second output circuit uses another ratio for different gray levels. This local optimization achieves fast response speed in critical paths without increasing the complexity of the entire circuit.