Liquid Crystal Display Delta Pixel Arrangement
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Solution Overview
Problem
Conventional liquid crystal display devices with triangular pixel arrangements face issues of image distortion and increased power consumption due to zigzag-shaped data and gate lines, leading to driving failures and lower image quality.
Innovation Solution
The implementation of a delta arrangement with odd-numbered and even-numbered rows of R, G, and B pixels, where data lines are alternately arranged in straight lines to minimize line length and distortion, combined with a driving method that supplies pulse-type scan signals and common voltages synchronized with rising edges to maintain high or low potentials for one frame, forming a horizontal electric field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If triangular pixel arrangement is used, then smooth display of curved or oblique image boundaries is improved, but image distortion and delay increase due to zigzag-shaped data and gate lines
Solution Approach 1:
The patent divides the pixel array into odd-numbered rows and even-numbered rows, with each row type using straight line connections to its respective data lines. This segmentation allows the triangular pixel arrangement to maintain smooth image boundaries while avoiding the zigzag line problem by creating two separate rectangular sub-arrays, each with straight line connections.
2Reliability
If zigzag-shaped data and gate lines are used in triangular pixel arrangement, then pixel connectivity is maintained, but line length increases leading to increased power consumption
Solution Approach 1:
By segmenting the pixel array into odd and even rows with different connection patterns, the patent reduces the average line length compared to a uniform zigzag arrangement. Each segment uses optimized straight line connections, reducing overall signal transmission distance and power consumption while maintaining pixel connectivity.
3Shape
If zigzag-shaped data and gate lines are used, then triangular pixel arrangement is achieved, but signal transmission delay increases causing driving failures
Solution Approach 1:
The patent segments the pixel array into odd and even rows, allowing each segment to use straight line connections to data lines. This reduces signal transmission distance and delay compared to a continuous zigzag arrangement, preventing driving failures while maintaining the triangular pixel arrangement for smooth image display.
4Device complexity
If common voltages are not supplied synchronized with scan signals, then simple voltage supply is maintained, but image quality deteriorates due to potential fluctuations
Solution Approach 1:
The patent applies preliminary action by supplying common voltages to pixel electrodes before scan signals are applied to gate lines. This preliminary voltage establishment ensures that pixel electrodes are ready to receive image signals at the correct potential, preventing fluctuations and maintaining image quality without requiring complex real-time voltage adjustment mechanisms.
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 reduces image distortion and delay, improves charging characteristics, and decreases power consumption while maintaining high image quality and smooth display of curved or oblique image boundaries.
Implementation Method 1
the pixel electrodes and the common electrodes are formed on the same surface, and which drives liquid crystals by a horizontal electric field between the pixel electrodes and the common electrodes
Data Source
AI summary
A liquid crystal display device has odd- and even-numbered rows of pixels sequentially and repeatedly arranged on a substrate in the horizontal direction, alternate rows being shifted horizontally, first and second groups of data lines for dividing the odd and even-numbered rows of pixels, respectively, into first sub-pixels and second sub-pixels and partitioning the even and odd-numbered rows of pixels, respectively. First and second groups of data lines are alternately arranged on the substrate in the vertical direction, for supplying data signals to the first and second sub-pixels, respectively, through switching devices disposed in each sub-pixel. Gate lines arranged on the first substrate in every two row of pixels in the horizontal direction, for supplying pulse-type scan signals to row units of the first sub-pixels and the second sub-pixels, and common voltage lines are arranged between the gate lines.