OLED Display Sub-Pixel Arrangement for High Resolution
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Solution Overview
Problem
Existing OLED displays face challenges in achieving high resolution while maintaining a high aperture ratio and long lifespan, particularly due to limitations in the pentile matrix structure which reduces the number of pixels and deteriorates image quality.
Innovation Solution
The OLED display employs a unique pixel arrangement where first and second pixels in one column correspond to multiple third pixels in an adjacent column, utilizing rendering driving methods to achieve high resolution exceeding 350 pixels per inch without increasing the total number of pixels, thereby enhancing the aperture ratio and lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the pentile matrix structure is used to reduce the total number of pixels, then the device complexity is reduced, but the measurement precision deteriorates
Solution Approach 1:
The patent transitions from a conventional pixel arrangement to a sub-pixel level dimension by dividing pixels into first, second, and third sub-pixels. This dimensional change allows the system to achieve high resolution (350 PPI) through sub-pixel correspondence relationships rather than through a simple reduction in total pixel count, thereby resolving the contradiction between reduced device complexity and maintained measurement precision.
2Area of stationary object
If the total number of pixels is reduced, then the aperture ratio is improved, but the measurement precision deteriorates
Solution Approach 1:
The patent segments each pixel into multiple sub-pixels (first, second, and third sub-pixels) with different colors and functions. This segmentation allows the aperture ratio to be improved by reducing the total number of full pixels while maintaining image quality through the combined contribution of multiple sub-pixels per pixel location, effectively resolving the contradiction between aperture ratio and measurement precision.
3Measurement precision
If high resolution is achieved by increasing the total number of pixels, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent implements multi-functionality where the first sub-pixels, second sub-pixels, and third sub-pixels serve multiple purposes. The first and second sub-pixels in one column correspond to multiple third sub-pixels in adjacent columns, creating a universal sub-pixel structure that achieves high resolution (350 PPI) without proportionally increasing the total number of pixels, thus resolving the contradiction between measurement precision and device complexity.
4Area of stationary object
If the aperture ratio is improved by reducing the total number of pixels, then the lifespan is extended, but the measurement precision deteriorates
Solution Approach 1:
The patent employs dynamic rendering driving methods that actively control the emission characteristics of different sub-pixel types. By dynamically adjusting which sub-pixels emit light and how they contribute to the final image, the system maintains high measurement precision (image quality) even with a reduced total pixel count that improves aperture ratio and lifespan, effectively resolving this contradiction.
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
This configuration allows for high resolution without deteriorating image quality, while reducing the total number of pixels, thus improving the aperture ratio and extending the lifespan of the OLED display.
Implementation Method 1
electrons and holes are combined with each other in the organic emission layer to thereby generate excitons. When the excitons shift from an excited state to a ground state, energy is released to emit light
Data Source
AI summary
An organic light emitting diode (OLED) display includes first pixels, second pixels, and third pixels. The OLED display includes a first column including a plurality of the first pixels alternately arranged with a plurality of the second pixels; and a second column adjacent to the first column and comprising a plurality of the third pixels. One of the first pixels and one of the second pixels in the first column correspond to more than two of the third pixels in the second column. Rendering driving is applied such that high resolution of more than 350 pixels per inch (PPI) may be realized without deterioration of the image quality while the total number of pixels is smaller than in a pentile matrix arrangement.