8-Domain Pixel Structure Voltage Control Bright Spot Reduction
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Solution Overview
Problem
Large-sized liquid crystal panels suffer from color shift when viewed from wide angles due to low aperture ratio and increased risk of bright spots in existing 8-domain pixel structures, which require additional components like step-down capacitors.
Innovation Solution
A novel 8-domain pixel structure with a greater number of driving thin-film transistors (TFTs) connected to the main area compared to the sub-area, eliminating the need for a step-down capacitor by increasing the voltage of the main area through optimized TFT arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a step-down capacitor is added to reduce sub-area voltage, then the voltage relationship between main area and sub-area is achieved, but the aperture ratio decreases and the risk of bright spots increases
Solution Approach 1:
The invention extracts and removes the step-down capacitor from the pixel structure, eliminating the component that was causing the aperture ratio reduction and bright spot risk, while maintaining the voltage relationship through an alternative TFT configuration approach
Solution Approach 2:
The driving TFTs are designed to perform multiple functions: they both drive the pixel areas and inherently create the voltage difference between main area and sub-area through their quantity configuration, eliminating the need for separate voltage control components
2Reliability
If a step-down capacitor is added to reduce sub-area voltage, then the voltage relationship between main area and sub-area is achieved, but the device complexity increases
Solution Approach 1:
The invention extracts and removes the step-down capacitor from the pixel structure, eliminating the component that was causing the aperture ratio reduction and bright spot risk, while maintaining the voltage relationship through an alternative TFT configuration approach
Solution Approach 2:
The invention merges the voltage control function into the driving TFT configuration itself, where the quantity difference of TFTs connected to main area and sub-area inherently creates the required voltage relationship, combining structure and function
Data Source
AI summary
The present invention relates to a pixel structure and a display panel containing the same. The pixel structure includes a main area and a sub-area respectively provided with four domains, wherein the main area is located above the sub-area, and the main area and the sub-area are respectively connected with driving thin-film transistors (TFTs) for current charging; wherein a quantity of the driving thin-film transistors (TFTs) connected to the main area is greater than a quantity of the driving TFTs connected to the sub-area, such that a voltage of the main area is greater than a voltage of the sub-area. The invention provides a pixel structure which adopts a novel design of an 8-domain structure, which improves an aperture ratio thereof, thereby reducing the risk of becoming a bright spot.