Protruding Pixel Electrodes for LCD Optical Transmissivity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal display panels face reduced optical transmissivity due to spacing between sub pixel electrodes, which also weakens the control of liquid crystal molecules, leading to slower response speeds and deteriorated display quality.
Innovation Solution
A display substrate with a pixel electrode design featuring a body electrode section and protruding electrodes, including trapezoidal and rectangular electrodes, where the rectangular electrodes connect to the trapezoidal electrodes and are inclined with respect to the protrusion direction, optimizing the spacing and shape to enhance optical transmissivity and control of liquid crystal molecules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sub pixel electrodes are spaced apart to enhance viewing angle, then viewing angle is improved, but optical transmissivity deteriorates due to opening regions
Solution Approach 1:
The patent introduces protruding electrodes that extend in the third dimension (vertical direction) from the planar electrode structure. This dimensional change allows the electrodes to maintain electrical connectivity while reducing the opening regions between sub-pixels, thereby improving optical transmissivity without sacrificing viewing angle performance.
Solution Approach 2:
The protruding electrodes are nested within the opening regions formed by spaced-apart sub-pixel electrodes. This nesting approach allows the protruding structures to fill the gaps between electrodes, maintaining optical pathways while preserving the electrical separation needed for viewing angle enhancement.
2Illumination intensity
If protruding electrodes are added to reduce opening regions and improve optical transmissivity, then optical transmissivity is improved, but the ability to control liquid crystal molecules deteriorates, leading to slower response speed
Solution Approach 1:
The patent applies different geometric characteristics to different portions of the protruding electrodes. The lower portion has a first width and the upper portion has a second width, creating local variations in electric field distribution. This local quality differentiation optimizes both optical transmissivity (through reduced opening regions) and liquid crystal molecule control (through tailored electric field gradients), thereby maintaining fast response speed while improving optical performance.
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
The design improves the response speed of liquid crystal molecules by increasing the force for controlling their direction, thereby enhancing the display quality and optical transmissivity of the liquid crystal display panel.
Implementation Method 1
Each of the protruding electrodes includes a trapezoidal electrode having two sides that are inclined with respect to a protrusion direction... increasing the force for controlling their direction
Data Source
AI summary
A display substrate includes a transparent substrate, a gate line formed on the transparent substrate, a data line crossing the gate line, a thin film transistor electrically connected to the gate line and the data line, and a pixel electrode. The pixel electrode includes a body electrode section electrically connected to the thin film transistor and a plurality of protruding electrodes protruding from the body electrode section. Each of the protruding electrodes includes a trapezoidal electrode having two sides that are inclined with respect to a protrusion direction that is a lengthwise direction of the body electrode section.