Array Substrate Metal Patterns Color Filtering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The complex and costly manufacturing process of liquid crystal displays (LCDs) due to the need for separate color filters, which results in high production costs and limited filtering efficiency.
Innovation Solution
An array substrate with periodically arranged metal patterns that function as a color filter, filtering light by varying the width and arrangement period of metal units within sub-pixel regions, eliminating the need for separate color filters and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate color filters (red, green, blue) are formed on the substrate, then color filtering function is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent combines multiple separate color filters (red, green, blue) into a single metal pattern layer with periodically arranged metal units. By varying the arrangement period of metal units in different sub-pixel regions, the integrated structure achieves the color filtering function that previously required three separate filter layers, thus simplifying the manufacturing procedure while maintaining the color filtering function.
Solution Approach 2:
The metal pattern layer serves multiple functions simultaneously: it acts as both the color filter and the pixel electrode. The periodically arranged metal units with different arrangement periods provide color filtering, while the conductive metal material also provides the electrode function, eliminating the need for separate color filter and electrode layers.
2Reliability
If multiple separate color filters are manufactured, then complete color spectrum is achieved, but production cost increases
Solution Approach 1:
The patent merges the manufacturing of three separate color filters into a single metal pattern formation process. By using one metal layer with spatially varying arrangement periods, the patent achieves complete color spectrum coverage while reducing the number of manufacturing steps and associated costs.
Solution Approach 2:
The patent uses parameter changes in the arrangement period of metal units to achieve different color filtering effects. By varying the arrangement period parameter across different sub-pixel regions, the single metal pattern layer can filter different wavelengths of light corresponding to red, green, and blue colors, eliminating the need for multiple separate filter manufacturing processes.
3Reliability
If traditional color filter structure is used, then color display is achieved, but panel thickness increases
Solution Approach 1:
The metal pattern layer performs dual functions as both color filter and pixel electrode, eliminating the need for separate color filter layer and electrode layer. This integration reduces the overall panel thickness while maintaining complete color display function through the periodically arranged metal units with different arrangement periods.
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
Simplifies the manufacturing procedure and reduces costs by integrating metal patterns as both a color filter and pixel electrodes, enhancing filtering efficiency and reducing panel thickness.
Implementation Method 1
the multiple metal patterns are used to reflectively filter light from ambient environment or from a front light source
Implementation Method 2
each metal pattern includes multiple metal units which are periodically arranged... metal units of metal patterns corresponding to sub-pixel regions of different colors have different arrangement periods
Data Source
AI summary
An array substrate and a method for manufacturing the same, a display panel and a touch panel are provided. The array substrate includes multiple pixel regions arranged in an array. Multiple metal patterns are provided within each pixel region. Each metal pattern includes multiple metal units which are periodically arranged. The multiple metal patterns are capable of reflectively filtering light from ambient environment or from a front light source. Each pixel region includes multiple sub-pixel regions which are in a one-to-one correspondence with the multiple metal patterns within the pixel region. Metal units of metal patterns corresponding to sub-pixel regions of different colors have different arrangement periods.