Boosting Circuit for Gate Driver Voltage and Power Reduction

The gate driver circuit is divided into multiple stages: a first gate driver for initial writing, a second gate driver for rewriting, and a boosting circuit for voltage enhancement. This segmentation allows the system to use high voltage only when necessary for luminance enhancement while using lower voltage for routine operations, thereby reducing overall power consumption.

The patent dynamically changes the voltage parameter supplied to the display element based on operational requirements. The boosting circuit generates a third signal voltage higher than the first and second signal voltages, allowing the system to switch between different voltage levels (low for power saving, high for luminance) depending on the display refresh phase, thus optimizing the trade-off between luminance and power consumption.

The gate driving function is segmented between multiple transistors (first transistor, second transistor, third transistor, fourth transistor) that operate at different stages. The first transistor receives a first signal voltage for initial writing, while subsequent transistors handle rewriting and boosting operations. This segmentation enables reliable writing control through coordinated multi-stage gating while managing power consumption by activating only necessary transistors at each phase.

The first gate driver performs preliminary writing of image data to the pixel before the second gate driver performs rewriting. This preliminary action ensures that the display element receives proper initialization voltage, improving writing reliability, while the boosting circuit subsequently enhances the voltage only when needed for luminance improvement, avoiding continuous high power consumption.

The patent implements a dynamic voltage supply system where the voltage level is adjusted based on operational requirements. The boosting circuit dynamically generates a third signal voltage higher than the first and second signal voltages in response to specific control signals. This dynamic approach ensures that display elements receive adequate voltage (high voltage) when required for reliable operation, while the system operates at lower voltage during phases where high power is not needed, thus resolving the contradiction between low power consumption and reliable display element operation.

The gate driver circuit is designed with multi-functionality to handle both low-voltage operations and high-voltage boosting requirements. The same circuit infrastructure (transistors, capacitors, and control logic) serves dual purposes: normal writing operations at standard voltage levels and voltage boosting when luminance enhancement is needed. This universality allows the system to maintain reliable display element operation across different voltage conditions without requiring separate dedicated circuits.

The gate driver circuit performs self-service by generating its own boosted voltage output through the boosting circuit (comprising transistors and capacitors) using the power supply voltage already available in the system. Instead of requiring an external expensive high-voltage driver, the circuit uses its existing components to autonomously generate the necessary high voltage for pixel operation, thereby improving voltage supply capability while avoiding the need for costly additional driver hardware.

The patent merges the voltage boosting function with the existing gate driver circuit by integrating the boosting circuit (transistors and capacitors) directly into the gate driver structure. This combination eliminates the need for a separate high-voltage driver module, reducing device cost while maintaining the capability to supply high voltage to pixels when required. The merged circuit uses shared components and control signals to achieve both writing control and voltage boosting functions.