Triangular RGB Pixel Structure for OLED Resolution and Lifespan
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Solution Overview
Problem
Conventional display substrates face challenges in achieving high visual resolution and extending the lifespan of blue subpixels in OLED displays due to complex manufacturing processes and the relatively shorter lifespan of blue subpixels, which affects image quality and brightness.
Innovation Solution
A pixel structure is designed where two red and two green subpixels are arranged around a larger blue subpixel, forming logical pixels in various shapes, allowing for subpixel rendering to increase visual resolution and extend the lifespan of blue subpixels by enlarging their area and using a subpixel borrowing mechanism to combine colors effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional RGB subpixel arrangements are used, then manufacturing process is simpler, but visual resolution is limited and blue subpixel lifespan is short
Solution Approach 1:
The invention divides each blue subpixel into multiple smaller blue sub-subpixels (e.g., two blue sub-subpixels per blue subpixel). This segmentation allows the blue subpixel area to be effectively doubled while maintaining the same physical footprint, thereby increasing visual resolution without requiring larger overall pixel areas or more complex manufacturing processes
Solution Approach 2:
The invention introduces a new dimension of subpixel organization by arranging red, green, and segmented blue subpixels in specific geometric patterns (such as triangular arrangements where red and green subpixels are positioned at vertices and segmented blue subpixels are positioned at other vertices). This dimensional reorganization enables subpixel rendering algorithms to achieve higher visual resolution by creating additional perceived pixels through clever spatial arrangement
2Duration of action of stationary object
If blue subpixel area is increased to extend lifespan, then blue subpixel lifespan is extended, but pixel area occupation increases
Solution Approach 1:
By segmenting the blue subpixel into multiple smaller blue sub-subpixels that are strategically positioned within the same physical pixel area, the invention effectively doubles the functional blue light-emitting area without increasing the overall pixel footprint. This segmentation strategy extends blue subpixel lifespan by providing more total blue emitting area while maintaining compact pixel dimensions
Solution Approach 2:
The invention changes the organizational parameters of blue subpixels by dividing them into multiple sub-subpixels with different positioning arrangements. This parameter change (from single blue subpixel to multiple segmented blue sub-subpixels) increases the effective blue light-emitting area and extends lifespan without requiring larger physical pixel areas
3Illumination intensity
If more blue subpixel area is used, then blue light intensity is sufficient, but other color subpixels area is reduced
Solution Approach 1:
The invention segments blue subpixels into multiple smaller blue sub-subpixels and positions them in specific geometric arrangements (such as triangular patterns with red and green subpixels). This segmentation allows the blue subpixel area to be effectively doubled while the red and green subpixels maintain their original areas, thereby ensuring sufficient blue light intensity without compromising the area available for other color subpixels
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 increases pixel resolution by up to twice that of conventional structures and ensures all color subpixels have similar lifespans, maintaining sufficient blue light intensity and improving image quality.
Implementation Method 1
Display substrates may include organic light-emitting diode (OLED)
Data Source
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Figure 2b~3
Figure 4
AI summary
A pixel structure includes a plurality of subpixels. The subpixels include red subpixels, green subpixels, and blue subpixels. The red subpixels and the green subpixels are all substantially in an isosceles triangular shape and have substantially a same area. Each blue subpixel is in substantially a rhombic shape and has an area substantially twice the area of the red subpixel or green subpixel. Each leg of the isosceles triangular shape of the red or green subpixel has a length equal to a side length of the rhombic shape of the blue subpixel. The display panel using the subpixel rendering algorithm has visual resolution greater than physical resolution. The enlarged blue subpixel extends life span to make all three color subpixel have similar life span.