Panel Assembly Common Electrode Cutting Patterns
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Solution Overview
Problem
Medium or small liquid crystal display panels with pixels divided into multiple domains suffer from reduced aperture ratio and decreased light transmittance, leading to lower brightness due to the narrow distance between gate lines and storage electrode lines.
Innovation Solution
A panel assembly design with a specific configuration of gate lines, data lines, pixel electrodes, and a common electrode, where the gate lines cross the center of pixel electrodes, and the common electrode includes cutting patterns that overlap the gate lines, optimizing the distance between gate and storage electrode lines to enhance light transmittance and prevent texture distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pixels are divided into multiple domains to achieve wide viewing angle, then viewing angle is improved, but aperture ratio becomes too small and light transmittance decreases
Solution Approach 1:
The gate lines are positioned to cross the center of pixel electrodes in the vertical direction, while the common electrode includes cutting patterns that overlap the gate lines. This spatial arrangement in multiple dimensions allows domain division for wide viewing angle while maintaining sufficient aperture ratio for light transmittance.
Solution Approach 2:
The common electrode is designed with cutting patterns at specific locations (overlapping gate lines) rather than uniform structure throughout. This localized modification allows domain division where needed while preserving aperture ratio in other regions, resolving the contradiction between viewing angle and light transmittance.
2Device complexity
If gate lines and storage electrode lines are positioned close together to reduce distance, then device complexity is reduced, but light transmittance decreases due to narrow distance
Solution Approach 1:
Instead of increasing horizontal distance between gate lines and storage electrode lines, the invention utilizes vertical positioning and overlapping patterns in the common electrode. The gate lines cross the center of pixel electrodes vertically, and cutting patterns overlap these lines, creating space for both close line positioning and sufficient light transmission paths.
3Illumination intensity
If aperture ratio is increased to improve light transmittance, then brightness is improved, but domain division structure becomes more difficult to implement
Solution Approach 1:
The common electrode incorporates cutting patterns only at specific locations where gate lines cross the pixel electrode centers, rather than implementing complex domain division structures throughout the entire electrode. This localized approach maintains high aperture ratio while achieving the necessary domain division for wide viewing angle.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration increases the aperture ratio, improving light transmittance and brightness while maintaining a wide viewing angle and preventing picture quality deterioration.
Implementation Method 1
The liquid crystal molecules in the VA mode may have various orientations near a fringe field in the divided plurality of domains, thereby enhancing the viewing angle.
Implementation Method 2
The pixel electrode and the common electrode receive different electric potentials to form an electric field, thereby adjusting the alignment of liquid crystal molecules and the light transmittance to form an image.
Data Source
AI summary
A panel assembly includes a gate wire, a data wire, a plurality of pixel electrodes, a liquid crystal layer, and a common electrode. The gate wire includes a plurality of gate lines and the data wire includes a plurality of data lines crossing and insulated from the gate lines. The pixel electrodes are insulated from each other and disposed on the data wire. The liquid crystal layer is disposed on the pixel electrodes and includes liquid crystal molecules, and a common electrode is disposed on the liquid crystal layer. The gate lines cross a center of the pixel electrodes, and the common electrode includes a plurality of cutting patterns that overlap the gate lines.