Sub-pixel Array Structure for OLED Aperture Ratio and Power Optimization
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Solution Overview
Problem
Existing OLED display devices face challenges in achieving high resolution while maintaining a high aperture ratio and reducing power consumption, as increasing the number of sub-pixels to enhance resolution leads to a decrease in aperture ratio and increased power consumption.
Innovation Solution
A sub-pixel array structure is implemented with a specific arrangement of first, second, and third sub-pixels, where the third sub-pixels are divided into two rows and two columns, allowing for a reduced total number of sub-pixels while maintaining high cognitive resolution and improving light efficiency, thereby increasing the aperture ratio and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of sub-pixels is increased to achieve high resolution, then the resolution is improved, but the aperture ratio is reduced and power consumption increases
Solution Approach 1:
The invention segments the sub-pixel array into a specific pattern where third sub-pixels are divided into two rows and two columns with first and second sub-pixels positioned between them. This segmentation allows for a more efficient spatial arrangement that reduces the total number of sub-pixels needed while maintaining resolution quality, thereby preserving aperture ratio.
Solution Approach 2:
The invention applies local quality by creating distinct regions with different sub-pixel configurations. The specific arrangement of first, second, and third sub-pixels in localized groups optimizes light emission efficiency in different areas, allowing high resolution to be achieved without uniformly increasing sub-pixel density across the entire display, thus maintaining aperture ratio.
2Measurement precision
If the number of sub-pixels is increased to achieve high resolution, then the resolution is improved, but the power consumption increases
Solution Approach 1:
By segmenting the sub-pixel array into the specific pattern described, the invention reduces the total number of sub-pixels required to achieve high resolution. Fewer sub-pixels mean fewer active elements consuming power, thus reducing overall power consumption while maintaining resolution through the optimized spatial arrangement.
Solution Approach 2:
The invention changes the spatial arrangement parameter of sub-pixels, positioning third sub-pixels in a specific configuration with first and second sub-pixels between them. This parameter change optimizes light efficiency and reduces the number of sub-pixels needed, thereby reducing power consumption while achieving high resolution.
3Use of energy by moving object
If the aperture ratio is increased to reduce power consumption, then the power consumption is reduced, but the resolution is degraded
Solution Approach 1:
The segmented sub-pixel arrangement allows the display to achieve high resolution with fewer total sub-pixels. This segmentation strategy enables a higher aperture ratio (larger pixel area relative to sub-pixel count) while maintaining resolution through the specific spatial configuration of first, second, and third sub-pixels.
Solution Approach 2:
The local quality principle is applied through the specific arrangement of sub-pixel groups where third sub-pixels are positioned in two rows and two columns with first and second sub-pixels between them. This localized optimization allows each pixel region to achieve high resolution efficiency, enabling higher aperture ratios without degrading overall resolution.
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 arrangement enables a high-resolution display with improved aperture ratio and reduced power consumption by optimizing the number and arrangement of sub-pixels, enhancing both image clarity and energy efficiency.
Implementation Method 1
An organic light emitting diode display (OLED) device displays images using organic light emitting diodes as self-luminescent elements
Implementation Method 2
The first sub-pixel emits red (R) light, the second sub-pixel emits blue (B) light, and the third sub-pixel emits green (G) light
Data Source
AI summary
A display device according to an embodiment includes a substrate including a plurality of gate lines and a plurality of data lines crossing the plurality of gate lines, and a sub-pixel array structure including a sub-pixel group corresponding to the substrate. The sub-pixel group includes a first sub-pixel, a second sub-pixel in a column different from the first sub-pixel, and third sub-pixels divided in two rows and in two columns with at least one of the first sub-pixel and the second sub-pixel therebetween, wherein the first sub-pixel is in a first column, the second sub-pixel is in a third column, and the third sub-pixels are in second and fourth columns, and wherein a ratio between numbers of the first, second and third sub-pixels is 1:1:4.