Display Device With Stacked Electrodes For Pixel Capacitance
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Solution Overview
Problem
Conventional ultra-high-definition display devices face challenges in ensuring pixel capacitance and achieving wide viewing angles due to the small size of pixels and complex pixel structures.
Innovation Solution
The display device incorporates a first substrate with a first electrode, a second electrode, and a third electrode, where the second and third electrodes have non-parallel sides, and are electrically connected to the first electrode, with a liquid crystal layer between the substrates, allowing for increased pixel capacitance and broadened viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If each pixel is made small to achieve ultra-high-definition display, then display resolution is improved, but pixel capacitance cannot be ensured
Solution Approach 1:
The patent introduces a third electrode above the second electrode, adding a vertical dimension to the pixel structure. This allows the formation of multiple capacitor structures (first capacitor between first and second electrodes, second capacitor between second and third electrodes) within the same pixel area, thereby increasing total pixel capacitance without reducing pixel size for high resolution
Solution Approach 2:
The patent embeds multiple functional layers within each other: the first electrode is at the bottom, the second electrode is above it, and the third electrode is above the second electrode. This nested arrangement allows multiple capacitor structures to be stacked vertically, increasing capacitance while maintaining compact pixel dimensions for ultra-high-definition display
2Measurement precision
If each pixel is made small to achieve ultra-high-definition display, then display resolution is improved, but wide viewing angle becomes difficult to realize
Solution Approach 1:
By adding the third electrode above the second electrode, the patent creates multiple capacitor structures that can be configured with different orientations. This allows the pixel to maintain high resolution through small pixel size while achieving wide viewing angle through the multi-dimensional capacitor arrangement that can support various switching modes
Solution Approach 2:
The patent divides the pixel into multiple functional segments: first electrode, second electrode, and third electrode forming separate capacitor structures. This segmentation allows each capacitor to be optimized for specific viewing angle characteristics, enabling wide viewing angle while maintaining high display resolution through the segmented pixel design
3Adaptability or versatility
If pixel structure is made complicated to achieve wide viewing angle, then viewing angle is improved, but device complexity increases
Solution Approach 1:
Instead of complicating the lateral pixel structure to achieve wide viewing angle, the patent adds a vertical dimension by introducing a third electrode above the second electrode. This vertical stacking approach increases viewing angle capability while keeping the planar pixel structure relatively simple, thus improving viewing angle without proportionally increasing device complexity
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 enhances pixel capacitance and ensures a wider viewing angle by forming domains within pixels, thereby improving display quality and maintaining image clarity across various directions.
Implementation Method 1
a liquid crystal layer held between the first substrate and the second substrate
Implementation Method 2
the second electrode located above the first electrode and having potential different from the first electrode, and a third electrode located above the second electrode
Data Source
AI summary
According to one embodiment, a display device including a first substrate including a first electrode, a second electrode located above the first electrode and having potential different from the first electrode, and a third electrode located above the second electrode and electrically connected to the first electrode, a second substrate facing the first substrate, and a liquid crystal layer held between the first substrate and the second substrate, wherein at least one of the second electrode and the third electrode includes a first side, and a second side which faces the first side and is not parallel to the first side.