Liquid Crystal Display Electrode Pattern for Texture Reduction
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Solution Overview
Problem
Liquid crystal displays with vertically aligned mode face challenges in reducing texture in images near domain boundaries due to limited liquid crystal control ability, affecting image quality and viewing angles.
Innovation Solution
The design incorporates a specific pattern on the field generating electrode with horizontal and vertical extensions, where the width varies along the length, and includes branches and connection parts to enhance liquid crystal control, reducing texture and improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a vertically aligned mode liquid crystal display uses a simple field generating electrode pattern, then the device complexity is reduced and manufacturing is easier, but the liquid crystal control ability near domain boundaries is insufficient, causing texture in images
Solution Approach 1:
The field generating electrode pattern incorporates horizontal and vertical extensions with varying widths (largest width near the connection, smaller width farther away) to create localized control zones. This local quality variation enhances liquid crystal alignment control precisely where domain boundaries exist, reducing texture without requiring complete redesign of the entire electrode structure
Solution Approach 2:
The electrode pattern is divided into distinct segments including horizontal extensions, vertical extensions, and connection portions. Each segment serves a specific function in controlling liquid crystal domains, allowing optimized control at domain boundaries while maintaining overall pattern simplicity for ease of manufacture
2Device complexity
If the field generating electrode pattern is simplified, then the device complexity is reduced, but the image quality near domain boundaries deteriorates due to texture
Solution Approach 1:
Instead of complicating the entire electrode pattern, the invention introduces localized structural features (extensions with specific width variations) only where domain boundaries occur. This maintains overall pattern simplicity while providing enhanced control precisely where image quality is compromised by texture
Solution Approach 2:
The electrode pattern extends into additional spatial dimensions with horizontal and vertical extensions that create multi-directional control fields. This dimensional expansion allows comprehensive control of liquid crystal domains without increasing pattern complexity proportionally
3Manufacturing precision
If the width of horizontal or vertical extension is increased to improve liquid crystal control, then the control ability is enhanced, but the area of the electrode increases
Solution Approach 1:
The extensions have non-uniform width distribution with largest width concentrated near the connection portion where control is most needed, and smaller width toward the edges. This localized width allocation maximizes control effectiveness while minimizing overall electrode area occupation
Solution Approach 2:
The electrode design utilizes specific width parameter variations (largest width near connection, smaller width farther away) within controlled ranges to optimize liquid crystal control ability. These parameter changes achieve enhanced control without proportionally increasing electrode area
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 liquid crystal control ability, reducing texture in images near domain boundaries and enhancing transmittance, thereby improving image quality and viewing angles.
Implementation Method 1
The liquid crystal display generates an electric field in the liquid crystal layer by applying voltage to the field generating electrodes
Implementation Method 2
determines the direction of liquid crystal molecules of the liquid crystal layer by the generated electric field, thus controlling polarization of incident light
Implementation Method 3
the plurality of domains may be formed by controlling the alignment direction of the liquid crystal by an edge of the pattern of the field generating electrode and a fringe field formed between the field generating electrodes
Data Source
AI summary
Provided is a liquid crystal display capable of reducing a texture by increasing a liquid crystal control ability. The liquid crystal display includes a first electrode and a second electrode facing each other with a liquid crystal layer therebetween. The first electrode includes a horizontal extension forming a boundary between adjacent subregions and a vertical extension connected to the horizontal extension, and the horizontal extension includes a portion which has a largest width at a position proximate to the vertical extension, and which has a smaller width at a position farther from the vertical extension.