Zigzag Pixel Structure for High-Resolution OLED Displays
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Solution Overview
Problem
Traditional RGB pixel arrangement structures in OLED display devices fail to meet the requirements for high-resolution displays, as they do not efficiently utilize subpixels to achieve desired color combinations and brightness levels.
Innovation Solution
A pixel structure where each row of pixel cells is arranged in a zigzag or staggered manner, with each subpixel divided into secondary subpixels along different directions, allowing for subpixel borrowing and improved color combinations, enabling higher display resolution by using adjacent subpixels with different colors to form pixel groups and achieve desired gray-scale brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional RGB pixel arrangement structure is used, then device complexity is reduced and manufacturing is easier, but display resolution and color combination efficiency are insufficient
Solution Approach 1:
Each subpixel is divided into multiple secondary subpixels (e.g., two secondary subpixels per subpixel), creating a more granular structure that enables higher display resolution. This segmentation allows for more precise color control and combination while maintaining the underlying RGB color model
Solution Approach 2:
The patent introduces a staggered or zigzag arrangement of pixel cells across multiple rows, creating a two-dimensional optimization of the pixel layout. This dimensional approach allows adjacent subpixels from different rows to be borrowed and combined, effectively increasing the display resolution by nearly 3/2 times compared to traditional arrangements
2Productivity
If subpixel borrowing is implemented to improve display resolution, then color combination efficiency increases, but pixel structure complexity increases
Solution Approach 1:
Each subpixel serves multiple functions by being borrowable by adjacent pixel groups. A single subpixel can contribute to the color output of its own pixel group while also being available to support neighboring pixel groups, maximizing the utility of each subpixel and improving overall color combination efficiency
Solution Approach 2:
Adjacent subpixels with different colors are merged to form pixel groups that can produce desired color combinations. By combining subpixels from the same row and borrowing from adjacent rows, the system creates flexible pixel groups that achieve high color efficiency without requiring separate dedicated subpixels for each color combination
3Manufacturing precision
If zigzag or staggered pixel arrangement is used, then display uniformity is improved and serrate edges are reduced, but patterning process complexity increases
Solution Approach 1:
The patent employs a zigzag or staggered arrangement where odd-numbered rows and even-numbered rows are offset relative to each other. This asymmetric layout eliminates the serrate edge effects present in traditional grid arrangements and improves display uniformity across the screen
Data Source
AI summary
The present disclosure provides a pixel structure including a plurality of pixel cells arranged into a plurality of rows. Each row includes a plurality of pixel-cell groups, each including a predetermined number of subpixels with different colors arranged along the row direction. The pixel-cell groups are arranged in a zigzag manner along a column direction. For any two neighboring rows, each subpixel in one row is divided into two secondary subpixels along the row direction, and each subpixel in the other row is divided into two secondary subpixels along the column direction. The colors of the subpixels in each pixel-cell group of the odd-numbered rows include a first color, a second color, and a third color, respectively along the row direction. The colors of the subpixels in each pixel-cell group of the even-numbered rows are the second color, the third color, and the first color, respectively along the row direction.