Display Panel Public Voltage Compensation With Multi-Channel Op-Amps
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Solution Overview
Problem
Existing public voltage compensation methods result in higher device costs due to the need for multiple operational amplifier feedback channels at each display panel, leading to increased costs and inefficiencies.
Innovation Solution
A public voltage compensation method utilizing a multi-channel operational amplifier that compensates for public voltage by connecting specific input terminals of the display panel to the amplifier's output terminals, allowing for adjustable compensation based on detected display parameters and stability, and optionally using a second amplifier to enhance compensation effects and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a universal public voltage compensation method is adopted, then compensation coverage is improved, but device cost increases
Solution Approach 1:
The display panel is divided into multiple compensation regions along the side edge, with different compensation input terminals (first, second, third, fourth types) assigned to different segments. Each segment can be independently compensated, allowing selective application rather than universal compensation across the entire panel, thus reducing cost while maintaining effectiveness where needed.
Solution Approach 2:
Different compensation strategies are applied to different locations of the display panel. The first and third compensation input terminals are positioned at specific locations (first end and second end of side edge) with different numbers of associated second and fourth compensation input terminals, creating localized compensation zones that address specific display quality issues in different regions without over-compensating the entire panel.
2Measurement precision
If multiple operational amplifier feedback channels are used, then compensation precision is improved, but device cost increases
Solution Approach 1:
A single multi-channel operational amplifier is designed to perform multiple compensation functions simultaneously. The amplifier has multiple output terminals (first, second, third, fourth compensation output terminals) that can drive different compensation input terminals on the display panel, replacing the need for multiple separate operational amplifiers or feedback channels while maintaining comprehensive compensation capability.
3Manufacturing precision
If compensation is applied to all display panels, then display quality is improved, but manufacturing efficiency decreases
Solution Approach 1:
The compensation configuration is made adjustable and adaptable rather than fixed and universal. By providing multiple types of compensation input terminals with different distributions along the side edge, the system can be dynamically configured to match specific display quality issues in different panels, allowing for selective and optimized compensation application that improves manufacturing efficiency by avoiding unnecessary compensation steps.
Data Source
AI summary
Disclosed are a public voltage compensation method and a display panel. The public voltage compensation method includes: installing the first multi-channel operational amplifier; connecting the first public voltage feedback output terminal with the first feedback input terminal, connecting the second public voltage feedback output terminal with the second feedback input terminal, connecting the first compensation input terminal with the first compensation output terminal, connecting the third compensation input terminal with the third compensation output terminal, connecting one of the n second compensation input terminals with the second compensation output terminal, and connecting one of the n fourth compensation input terminals with the fourth compensation output terminal; interconnecting each of the n second compensation input terminals and interconnecting each of the n fourth compensation input terminals.