LCD Linear Electrode Arrangement for Viewing Angle Consistency
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Solution Overview
Problem
Liquid crystal display devices face challenges in achieving high resolution and reducing color chromaticity dependence on viewing angle, particularly in horizontal directions, which affects image consistency for users on either side of the screen.
Innovation Solution
The liquid crystal display device incorporates a specific arrangement of scanning lines, signal lines, and pixel electrodes with linear electrodes extending at acute and obtuse angles, forming V- and Λ-shapes, which allows for improved aperture ratio and reduced color chromaticity variation across viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the size of pixels is reduced to achieve high resolution, then the number of pixels per unit area increases, but the aperture ratio of each pixel decreases
Solution Approach 1:
The pixel electrode is divided into multiple linear electrodes extending in different directions (first direction and second direction). This segmentation allows the electric field to be applied more efficiently across the liquid crystal layer, improving the aperture ratio without requiring larger pixel dimensions, thus maintaining high resolution.
Solution Approach 2:
Linear electrodes are introduced extending in directions other than the conventional single direction. By adding electrodes in multiple dimensions (first direction and second direction), the electric field distribution is optimized, enabling better control of liquid crystal molecules and improved aperture ratio while keeping pixel size small for high resolution.
2Adaptability or versatility
If the direction of liquid crystal alignment is classified into multiple types in a single subpixel, then the viewing angle range is expanded, but the device structure becomes more complex
Solution Approach 1:
The pixel electrode is segmented into multiple linear electrodes with different orientations. Each linear electrode creates a specific alignment direction for liquid crystal molecules, achieving multiple alignment types within a single subpixel without requiring separate alignment structures for each direction.
Solution Approach 2:
The linear electrode structure serves multiple functions: it applies electric fields in different directions, controls liquid crystal alignment in multiple orientations, and maintains a relatively simple overall structure. This multi-functionality expands the viewing angle range without proportionally increasing device complexity.
3Adaptability or versatility
If additional subpixels are added to improve viewing angle characteristics and color consistency, then the display quality improves, but the pixel size and resolution are compromised
Solution Approach 1:
The pixel electrode is divided into linear electrodes extending in different directions, with each linear electrode contributing to different viewing angle characteristics. This segmentation allows a single subpixel to provide the functionality that would otherwise require multiple subpixels, maintaining resolution while improving viewing angle characteristics.
Solution Approach 2:
By introducing linear electrodes in multiple dimensions (different directions), the patent achieves color consistency and viewing angle improvement within the same pixel area. This dimensional approach eliminates the need for additional subpixels that would reduce resolution.
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 arrangement enhances the viewing angle characteristics and maintains image color consistency for users on either side of the screen, improving display quality and reducing the need for additional subpixels.
Implementation Method 1
the direction of an electric field applied to the liquid crystal in a single subpixel
Implementation Method 2
the direction of alignment of the liquid crystal when an electric field is applied
Data Source
AI summary
According to one embodiment, a liquid crystal display device includes a first scanning line, a third scanning line, a second scanning line, a first linear electrode, a second linear electrode and a third linear electrode. The first linear electrode is located between the first scanning line and the second scanning line, and extends in a third direction. The second linear electrode is located between the first scanning line and the second scanning line, and extends in a fourth direction. The third linear electrode is located between the second scanning line and the third scanning line, and comprises a portion extending in the fourth direction. The second linear electrode is electrically connected to the third linear electrode.