Honeycomb Pixel Electrodes for High-Resolution Displays
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Solution Overview
Problem
High-resolution liquid crystal displays face challenges in reducing pixel size and pitch, making it difficult to form fine patterns for color filters and black matrices, which affects viewing angle and manufacturing reliability.
Innovation Solution
The display device rearranges pixel electrodes and color filters in a honeycomb pattern with overlapping regions to accommodate smaller pixel sizes, using a common electrode configuration that forms a horizontal electric field, allowing for efficient light transmission and improved manufacturing feasibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pixel size and pitch are reduced to achieve higher resolution, then display resolution is improved, but manufacturing precision deteriorates due to difficulty in forming fine patterns for color filters and black matrices
Solution Approach 1:
The invention segments the color filter structure into multiple parts: a first color filter layer and a second color filter layer. This segmentation allows each layer to have optimized dimensions that are manufacturable, while collectively providing the required color filtering function for high-resolution pixels. The black matrix is also segmented into multiple regions with different functions, allowing for better manufacturing control.
Solution Approach 2:
The invention transitions from a planar color filter arrangement to a three-dimensional stacked configuration. By arranging color filters in multiple layers at different positions, the patent achieves high-resolution color display without requiring extremely small lateral dimensions, thus avoiding the manufacturing precision limitations of fine pattern formation.
2Measurement precision
If pixel size and pitch are reduced to achieve higher resolution, then display resolution is improved, but viewing angle deteriorates
Solution Approach 1:
The invention applies different properties to different regions of the pixel structure. The first and second color filter layers are positioned at different locations within the pixel, with each layer optimized for specific viewing angle characteristics. This local optimization of color filter placement improves viewing angle performance while maintaining high resolution.
Solution Approach 2:
The patent employs an asymmetric arrangement of color filters within the pixel structure, with the first color filter layer positioned differently from the second color filter layer. This asymmetric configuration helps to broaden the viewing angle by compensating for directional optical effects that occur in symmetric arrangements.
3Measurement precision
If pixel size and pitch are reduced to achieve higher resolution, then display resolution is improved, but aperture ratio deteriorates
Solution Approach 1:
By stacking color filters in multiple layers rather than arranging them in a single plane, the invention effectively utilizes the vertical dimension. This allows the opening region to maintain a larger area in the lateral plane, improving aperture ratio, while the multi-layer color filters provide complete color filtering functionality.
Solution Approach 2:
The patent implements a nested structure where the second color filter layer is positioned within the vertical space above or below the first color filter layer. This nesting arrangement maximizes the use of available pixel volume, allowing larger opening regions without compromising color filter functionality.
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 the display's ability to handle high resolutions by reducing pixel size and pitch while maintaining high transmittance and aperture ratio, improving viewing angles and manufacturing reliability.
Implementation Method 1
a ray of light is refracted in the direction of orientation of the liquid-crystal molecules because of optical anisotropy, thus representing picture information
Implementation Method 2
the common electrode and the pixel electrodes drive pixels by a vertically applied electric field
Implementation Method 3
The in-plane switching liquid crystal displays have a wider viewing angle because the pixels are driven using a horizontal electric field between the pixel electrodes and the common electrode
Data Source
AI summary
A display device is provided. The display device can include a first pixel portion comprising a first thin-film transistor provided at the intersection between a first gate line and a first data line, and a first pixel electrode connected to the first thin-film transistor, and a second pixel portion comprising a second thin-film transistor provided at the intersection between a second gate line and the first data line, and a second pixel electrode connected to the second thin-film transistor, wherein the first pixel portion and the second pixel portion are arranged parallel to the first data line, and directions extended the first pixel electrode and the second pixel electrode are extended in such a direction as to face each other.