Rhombic Pixel Unit for OLED Light Mixing and Resolution
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Solution Overview
Problem
Conventional RGB three-color display systems suffer from color unevenness, low light mixing efficiency, and poor white color rendering, leading to suboptimal display quality and resolution in Organic Light Emitting Diode (OLED) devices.
Innovation Solution
A display method utilizing pixel units composed of three rhombic sub-pixels arranged alternately with white sub-pixels, enhancing light efficiency and resolution by employing triangular and rhombic sampling areas for accurate and continuous color output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional RGB three-color system is used, then manufacturing process is simple, but light mixing efficiency is low and white color rendering is poor
Solution Approach 1:
The pixel unit is segmented into three distinct rhombic sub-pixels (R, G, B) arranged in a specific geometric pattern. Each sub-pixel is independently controllable, allowing precise color mixing while maintaining structural simplicity for manufacturing
Solution Approach 2:
The patent transitions from traditional linear or grid arrangements to a rhombic geometric arrangement in two-dimensional space. This dimensional reorganization optimizes light mixing paths and improves white color rendering by enabling better spatial distribution of color components
2Manufacturing precision
If RGB pixel units are arranged in ordered rows and columns, then manufacturing is easy, but color unevenness occurs causing multicolor marginal error
Solution Approach 1:
The patent employs asymmetric rhombic arrangements within pixel units and uses alternating patterns of different pixel types (e.g., RGB vs. RBG sequences) to break the symmetry that causes color unevenness. This asymmetric design eliminates multicolor marginal errors while maintaining regular enough patterns for easy manufacturing
3Measurement precision
If delta or mosaic arrangement is used, then color display is achieved, but resolution ratio is reduced
Solution Approach 1:
Different regions of the display panel use locally optimized pixel arrangements. The rhombic sub-pixel configuration within each pixel unit is specifically designed to achieve both high resolution and color uniformity in its local context, while the overall pattern maintains global consistency
4Measurement precision
If existing production processes are maintained, then manufacturing cost is low, but resolution ratio is restricted
Solution Approach 1:
The rhombic pixel unit design is universally compatible with existing OLED production processes while enabling higher resolution. The same manufacturing techniques can produce both the organic luminescent layers and the rhombic geometric patterns, making the high-resolution design universally applicable without requiring entirely new production lines
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 achieves improved light efficiency, enhanced brightness, and increased resolution ratio while being cost-effective and compatible with existing production technologies, suitable for various display devices including OLEDs.
Implementation Method 1
A full color Organic Light Emitting Diode Device generally achieves a full color display by performing color mixing on sub-pixels made up of red luminescent layer, green luminescent layer and blue luminescent layer
Data Source
Figure 1A~1C
Figure 2
Figure 3
AI summary
Embodiments of the present invention disclose a pixel unit made up of three rhombic sub-pixels spliced with each other, and, every two adjacent rhombic sub-pixels of the three rhombic sub-pixels share one common edge and are symmetrical about the common edge. In accordance to embodiments of the present invention, the rhombic sub-pixels have larger sizes and accordingly can be achieved in the existing production line with adoption of the existing mature production technology. Accordingly, high production yield, small spreading difficulty, and wide application prospect can be achieved for products. Meanwhile, embodiments of the present invention also provide a display panel, a display method and a display device.