OLED Pixel Structure Diagonal Sub-Pixel Arrangement
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Solution Overview
Problem
Existing OLED display panel technologies face challenges with poor light-emission effects and yield ratios due to non-uniform sub-pixel arrangements and the use of larger mask openings for red and green sub-pixels, leading to alignment difficulties and color crosstalk.
Innovation Solution
A pixel structure with sub-pixels arranged in a diagonal configuration within each pixel unit, allowing for uniform sub-pixel placement and shared metal mask openings among adjacent units, improving alignment and reducing mask thickness and color crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sub-pixels are arranged in traditional configurations with larger mask openings for red and green sub-pixels, then manufacturing is easier, but alignment precision deteriorates and color crosstalk increases
Solution Approach 1:
The patent applies local quality by differentiating mask opening sizes based on sub-pixel color requirements. Specifically, blue sub-pixels use smaller mask openings while red and green sub-pixels use larger mask openings, optimizing each color channel's light emission characteristics. This localized differentiation improves alignment precision and reduces color crosstalk while maintaining ease of manufacture through a systematic mask design.
Solution Approach 2:
The patent employs asymmetry in the diagonal arrangement of sub-pixels within pixel units. By positioning sub-pixels at diagonal positions rather than symmetric grid positions, the design creates asymmetric patterns that improve light emission uniformity across the display panel, reducing the milky white effect while maintaining manufacturing feasibility.
2Illumination intensity
If mask openings are made larger for red and green sub-pixels, then light emission intensity improves, but alignment difficulty increases and color crosstalk worsens
Solution Approach 1:
The patent implements local quality by assigning different mask opening sizes to different color sub-pixels. Red and green sub-pixels are equipped with larger mask openings to enhance light emission intensity, while blue sub-pixels use smaller openings. This localized optimization ensures each color channel achieves its optimal brightness without compromising overall alignment precision through the systematic diagonal arrangement.
3Stability of the object's composition
If sub-pixel arrangement is optimized for uniformity, then light emission uniformity improves, but device complexity increases
Solution Approach 1:
The patent uses asymmetry in the diagonal arrangement of sub-pixels within pixel units to achieve uniform light emission. By positioning sub-pixels at diagonal positions rather than symmetric grid positions, the design creates asymmetric patterns that improve light emission uniformity across the display panel, reducing the milky white effect while maintaining manufacturing feasibility through systematic repetition of the pattern.
Solution Approach 2:
The patent applies dimensionality change by transitioning from traditional row-column grid arrangements to diagonal arrangements. This dimensional reorganization of sub-pixel positions creates more uniform light emission patterns across the display panel, improving composition stability while the repeating diagonal pattern keeps the overall device structure manageable.
4Object-generated harmful factors
If diagonal sub-pixel arrangement is implemented, then color crosstalk is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs asymmetry in the diagonal arrangement of sub-pixels within pixel units. By positioning sub-pixels at diagonal positions rather than symmetric grid positions, the design creates asymmetric patterns that improve light emission uniformity and reduce color crosstalk between adjacent sub-pixels, while the systematic repetition maintains manufacturing feasibility.
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
The solution enhances light-emission efficiency and yield ratios by ensuring uniform sub-pixel arrangement and shared mask openings, reducing alignment difficulties and color crosstalk, thereby improving the overall performance of OLED display panels.
Implementation Method 1
An Organic Light-Emitting Diode (OLED) display panel has become the most promising new flat display panel due to its active self-emission
Implementation Method 2
An Organic Light-Emitting Diode (OLED) display panel has become the most promising new flat display panel due to its active self-emission
Data Source
AI summary
A pixel structure and a display device are provided. The pixel structure includes: a plurality of elements in an array, wherein each of the elements includes at least one pixel unit, and each of the pixel unit includes four sub-pixels in array, the four sub-pixels including one first sub-pixel in a first color, one second sub-pixel in a second color, and two third sub-pixels in a third color, wherein the first sub-pixel and the second sub-pixel are at diagonal positions in the pixel unit, and the two third sub-pixels are at the other diagonal positions in the pixel unit; and a plurality of the sub-pixels in two adjacent pixel units include at least one sub-pixel group, the sub-pixel group including two adjacent sub-pixels in the same color.