Adaptive AVC Circuit for ELVSS-Responsive Display Voltage Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional AVC circuits are inadequate in handling the changing luminance patterns and ELVSS voltage adjustments in modern display panels, particularly those using middle voltage (MV) range elements, leading to inefficiencies in power consumption and operational versatility.
Innovation Solution
An AVC circuit design incorporating a buffer structure and multiplexer to calculate MV-range voltages with minimal amplifier use, adapting to ELVSS voltage changes and maintaining stable output, tailored for modern display panel needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional AVC circuits are used, then the circuit structure is simple, but the circuit cannot adapt to changing luminance patterns and ELVSS voltage adjustments in modern display panels
Solution Approach 1:
The AVC circuit is divided into multiple functional blocks: voltage detection unit, voltage generation unit, and voltage output unit. Each block performs a specific function, allowing the circuit to adapt to different luminance patterns while maintaining manageable complexity through modular design.
Solution Approach 2:
The circuit uses dynamic voltage generation based on detected panel driving voltage levels. The voltage generation unit dynamically adjusts output voltage according to the detected ELVSS voltage, enabling adaptation to changing luminance patterns and voltage conditions in real-time.
2Use of energy by moving object
If conventional AVC circuits are used, then the circuit design is straightforward, but power consumption is high and operational versatility is limited
Solution Approach 1:
The circuit changes its operating parameters dynamically by detecting the panel driving voltage level and adjusting the voltage generation accordingly. This allows the circuit to operate efficiently across different voltage ranges (HV and MV modes) while adapting to various luminance patterns, thereby reducing power consumption without limiting operational versatility.
Solution Approach 2:
The AVC circuit is designed to handle multiple operating modes (HV and MV ranges) and different luminance patterns within a single unified structure. The voltage generation unit can generate different voltage levels based on detection results, providing universal adaptability across various display panel types and conditions.
3Measurement precision
If the AVC circuit adapts to ELVSS voltage changes, then voltage control precision improves, but the circuit complexity increases
Solution Approach 1:
The voltage detection unit continuously monitors the panel driving voltage (ELVSS) and feeds this information back to the voltage generation unit. This feedback mechanism enables precise voltage control by dynamically adjusting the output voltage based on the detected voltage level, achieving high precision without requiring overly complex circuitry.
Solution Approach 2:
The voltage detection unit acts as an intermediary between the power management integrated circuit and the voltage generation unit. It translates the panel driving voltage information into control signals that the voltage generation unit can use to adjust its output, thereby achieving precise voltage control through a structured intermediate layer.
Data Source
AI summary
An adaptive voltage control (AVC) circuit including: a voltage application circuit configured to apply a first voltage or a second voltage to a voltage output circuit, wherein the first voltage is generated by dividing a panel driving voltage; and the voltage output circuit configured to generate a third voltage based on the first or second voltage and a target voltage, and to apply the third voltage to a display panel.