Display Panel Driving Circuit with Dynamic Turn-On Voltage Adjustment
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Solution Overview
Problem
As display technology evolves to incorporate multiple functions, power consumption increases, necessitating a reduction in energy usage to enhance market competitiveness and extend battery life in mobile devices.
Innovation Solution
A driving circuit for display panels that includes a turn-on voltage adjusting circuit and cascaded shift registers, which dynamically adjusts the turn-on voltage based on display resolution, reducing power consumption by lowering the charging frequency and amplitude of clock signals in shift registers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple functions are integrated into display products, then functionality and performance are improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the turn-on voltage adjustable rather than fixed. The voltage adjusting circuit dynamically changes the turn-on voltage of pixel switches based on display resolution, allowing the system to adapt to different functional states (different resolutions) while optimizing power consumption for each state.
Solution Approach 2:
The patent changes the electrical parameter (turn-on voltage) of the pixel switches to resolve the contradiction. By adjusting the turn-on voltage according to display resolution, the system achieves different functional states with optimized energy consumption for each state.
2Reliability
If turn-on voltage is increased to improve display quality, then display performance is improved, but power consumption increases
Solution Approach 1:
The patent optimizes the turn-on voltage parameter to achieve the best balance between display quality and power consumption. By adjusting this parameter according to display resolution, the system maintains reliable display performance while minimizing energy consumption.
Solution Approach 2:
The voltage adjusting circuit automatically selects the appropriate turn-on voltage based on the current display resolution, making the system self-optimizing without requiring external intervention. This ensures display quality is maintained while power consumption is minimized for each operating state.
3Use of energy by moving object
If charging frequency is reduced to lower power consumption, then power consumption is reduced, but charging time increases
Solution Approach 1:
The patent changes multiple parameters including turn-on voltage and charging frequency to optimize the balance between power consumption and charging time. By coordinating adjustments of these parameters based on display resolution, the system achieves energy efficiency without excessive charging time penalties.
Data Source
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AI summary
Driving circuit of display panel, driving method and display panel. The driving circuit may include a turn-on voltage adjusting circuit. The turn-on voltage adjusting circuit may include a control subcircuit and a switching and voltage division subcircuit. The switching and voltage division subcircuit may include a switching subcircuit (01) and a basic voltage division subcircuit (02). The switching subcircuit (01) may be configured to perform voltage division of a signal outputted by the output terminal of the control subcircuit to form a voltage division feedback signal of the corresponding resolution under control of the control signal and output the voltage division feedback signal to the voltage division feedback node (VFB).