Array Substrate Slit Block Structures for 8K Display Transmittance
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Solution Overview
Problem
Current UV2A and SUVA technologies face challenges in achieving high transmittance and color shift performance for 8K ultra-high-definition displays, with UV2A having low transmittance and SUVA being unsuitable for 8-domain designs.
Innovation Solution
The array substrate design includes a substrate with a first common electrode layer and a pixel electrode layer featuring alternating slit and block structures, allowing for the formation of both vertical and horizontal electric fields, which enhances liquid crystal alignment and increases liquid crystal capacitance, thereby improving transmittance and reducing color shift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UV2A technology is used to control liquid crystal alignment, then alignment precision is improved, but transmittance deteriorates
Solution Approach 1:
The pixel electrode is divided into multiple sub-electrodes (first to fourth sub-electrodes) arranged in a matrix pattern. This segmentation allows different regions to create different electric field directions, enabling precise liquid crystal alignment control while maintaining high transmittance through optimized electrode layout and slit structure configuration.
Solution Approach 2:
Different regions of the pixel electrode are designed with different structures: some regions have slit structures while others have block structures. This local differentiation enables precise control of liquid crystal alignment in different areas while optimizing overall transmittance performance for 8K display requirements.
2Ease of manufacture
If conventional backlight scattering at protruding portions is accepted, then manufacturing is simplified, but light leakage occurs reducing static contrast ratio
Solution Approach 1:
The invention extracts and eliminates the protruding portions from the pixel structure by using a flat substrate surface with patterned electrode layers. The slit structures are formed within the plane of the substrate rather than creating protrusions, thereby removing the source of light scattering while maintaining the alignment control function.
3Illumination intensity
If SUVA technology is used for alignment, then transmittance is improved, but adaptability to 8-domain designs deteriorates
Solution Approach 1:
The pixel electrode structure with multiple sub-electrodes and slit configurations can universally achieve both 4-domain and 8-domain liquid crystal alignment patterns. By adjusting the slit positions and electric field configurations, the same structural design adapts to different domain requirements, providing versatility for various display modes while maintaining high transmittance.
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 design enhances the transmittance and reduces color shift issues, enabling the formation of eight different liquid crystal domain phases, similar to 8-domain products, while increasing the opening rate and improving the static contrast ratio.
Implementation Method 1
allowing for the formation of both vertical and horizontal electric fields, which enhances liquid crystal alignment
Implementation Method 2
This technology can precisely control the alignment of liquid crystal molecules through ultraviolet rays, greatly improving the light transmittance
Implementation Method 3
The key of UV2A is to control the tilt of liquid crystal molecules along the UV direction with high accuracy
Data Source
AI summary
An array substrate and a display apparatus are provided. The array substrate includes: a substrate (1); a first common electrode layer (2) on a side of the substrate (1); and a pixel electrode layer (3) on a side of the first common electrode layer (2) away from the substrate (1), including a plurality of pixel electrode rows (30) extending along a first direction (X) and arranged along a second direction (Y). The pixel electrode row (30) includes a plurality of pixel electrodes (31) arranged along the first direction (X). Part of regions of the pixel electrodes (31) is a slit structure (310) and part of regions of the pixel electrodes is a block structure, and in the same pixel electrode row (30), the slit structures (310) of adjacent pixel electrodes (31) are located at different positions in the adjacent pixel electrodes (31).