Liquid Crystal Display Pixel Electrode Configuration
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Solution Overview
Problem
Liquid crystal display devices using lateral electric field modes face challenges in achieving optimal color balance and transmittance while maintaining display quality, particularly in high-fineness pixel arrangements, due to variations in pixel pitch and electrode configurations.
Innovation Solution
The liquid crystal display device employs a specific layout of pixel electrodes and color filters, with varying numbers of strip electrodes and adjusted pitches, along with optimized distances between electrodes and source lines, to achieve balanced color representation and high transmittance, even in the presence of manufacturing gaps between substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of strip electrodes is increased to improve color balance, then color representation is improved, but device complexity increases
Solution Approach 1:
The pixel electrode is divided into multiple strip electrodes (first, second, third strip electrodes) with different numbers and configurations. This segmentation allows independent optimization of each strip electrode's position, width, and spacing to achieve precise color balance control without uniformly increasing complexity across the entire device.
Solution Approach 2:
Different regions of the pixel electrode have different numbers of strip electrodes (m and n where m≠n). The first pixel electrode has m strip electrodes while the second pixel electrode has n strip electrodes, creating local variations that optimize color representation in different areas while maintaining overall device functionality.
2Productivity
If pixel pitch is reduced to increase pixel density, then productivity is improved, but manufacturing precision deteriorates due to gap variations
Solution Approach 1:
The patent employs asymmetric electrode configurations where the number of strip electrodes differs between adjacent pixel electrodes (m vs n). This asymmetry creates compensatory effects that counterbalance variations in gap dimensions, allowing high pixel density to be achieved while maintaining consistent color performance despite manufacturing tolerances.
Solution Approach 2:
The patent varies multiple parameters including the number of strip electrodes (m and n), their widths, spacing distances, and positions relative to source lines. By changing these parameters in a coordinated manner, the design achieves high pixel density while compensating for gap variations to maintain manufacturing precision.
3Illumination intensity
If electrode width is increased to improve transmittance, then light transmission is improved, but area occupied by electrodes increases reducing pixel aperture
Solution Approach 1:
Instead of using a single wide electrode, the patent segments the electrode into multiple narrower strip electrodes. This segmentation increases the total transparent area (aperture) while maintaining sufficient conductive material to achieve required transmittance levels, effectively resolving the trade-off between electrode width and aperture 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 allows for improved color balance and transmittance across all pixels, reducing the impact of manufacturing gaps on display quality and maintaining optimal performance even at higher pixel densities.
Implementation Method 1
a liquid crystal layer which is held between the first substrate and the second substrate
Implementation Method 2
a liquid crystal display device using a lateral electric field (including a fringe field) such as an in-plane switching (IPS) mode
Data Source
AI summary
According to one embodiment, a liquid crystal display device, include a first substrate includes a first pixel electrode including m first strip electrodes, a second pixel electrode including m second strip electrodes, a third pixel electrode including n third strip electrodes, a fourth pixel electrode including m fourth strip electrodes, a fifth pixel electrode including m fifth strip electrodes, and a sixth pixel electrode including n sixth strip electrodes, m and n being positive integers and unequal to each other.