Liquid Crystal Display With Merged Pixel Electrodes
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Solution Overview
Problem
Liquid crystal displays face challenges in achieving high contrast ratio, light viewing angle, rapid response speed, increased aperture ratio, reduced signal delay, lower data line count, and decreased manufacturing costs due to limitations in switching elements, signal line resistance, and integrated circuit costs.
Innovation Solution
The design incorporates a liquid crystal display with a configuration of first and second pixel electrodes connected to switching elements and power lines, allowing for simultaneous gate line voltage application, reduced data lines, and optimized power line arrangement to enhance driving speed and aperture ratio, while maintaining low manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of switching elements is increased to connect more pixel electrodes, then the display coverage is improved, but the aperture ratio decreases because light cannot penetrate through the switching element positions
Solution Approach 1:
Multiple pixel electrodes are connected to a single switching element by merging their connection paths. Specifically, second and third pixel electrodes are connected to the same switching element through different routes (second data line and third data line respectively), allowing one switching element to control multiple pixel electrodes, thereby reducing the total number of switching elements needed while maintaining display coverage
2Area of stationary object
If the length of signal lines is increased to transfer signals to more pixel electrodes, then the display area is expanded, but resistance increases causing signal delay and lowering display quality
Solution Approach 1:
The signal transfer path is segmented into multiple parallel routes. Each pixel electrode is connected to the switching element through separate data lines (first data line, second data line, third data line), creating parallel signal paths that reduce the effective length of each individual signal line and minimize resistance and signal delay
3Reliability
If more data lines are added to apply data voltage to each pixel electrode, then the display quality is improved, but the cost of the driving unit increases
Solution Approach 1:
The switching element serves multiple functions by connecting to multiple pixel electrodes through different data lines. A single switching element can control second and third pixel electrodes, reducing the number of separate data line connections needed and thereby reducing the complexity and cost of the driving unit while maintaining display quality
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 improves the liquid crystal display's contrast ratio, viewing angle, response speed, and aperture ratio while reducing signal delay and manufacturing costs by simplifying the driving unit and reducing the number of data lines.
Implementation Method 1
applying voltage to a field generating electrode to generate an electric field in a liquid crystal layer, which determines alignment of liquid crystal molecules of the liquid crystal layer and controls polarization of incident light
Implementation Method 2
applying voltage to a field generating electrode to generate an electric field in a liquid crystal layer
Data Source
AI summary
A liquid crystal display includes first and second substrates, and a liquid crystal layer disposed therebetween. First and second gate lines are disposed on the first substrate. First and second data lines, and a power line are disposed on the first substrate. A first switching element is connected to the first gate line and the first data line, a second switching element is connected to the first gate line and the power line, a third switching element is connected to the second gate line and the second data line, a first pixel electrode is connected to the first switching element, a second pixel electrode is connected to the second switching element, a third pixel electrode is connected to the second switching element, and a fourth pixel electrode is connected to the third switching element, and a gate-on voltage can be simultaneously applied to the first and second gate lines.