OLED Panel Partition Plate Design for High Resolution
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Solution Overview
Problem
Conventional OLED panels face limitations in achieving high resolution due to the smallest diameter of jetted ink drops, leading to overflow or color blending when sub-pixel widths are less than the drop diameter, restricting the number of pixels per inch.
Innovation Solution
The use of partition plates with specific dimensions and arrangements, such as baffle plates and partition plates made of black materials, allows for the distribution of ink drops across multiple sub-pixels, enabling smaller sub-pixel widths and increased resolution by allowing ink to overflow from one sub-pixel chamber to an adjacent one, thereby increasing pixels per inch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the sub-pixel width is reduced to increase resolution, then pixels per inch increases, but ink drop overflow and color blending occur because the drop diameter cannot be reduced further
Solution Approach 1:
The invention divides the single chamber into multiple sub-chambers using partition plates. Each sub-pixel (red, green, blue) has its own sub-chamber, allowing independent ink drop placement. This segmentation enables smaller sub-pixel widths while preventing ink overflow into adjacent sub-pixels, as each sub-chamber is bounded by partition plates that contain the ink drops within their respective sub-pixel regions.
2Illumination intensity
If the blue sub-pixel area is increased to balance light intensity, then light intensity equality is achieved, but the overall pixel area increases reducing resolution
Solution Approach 1:
The invention applies local quality by making the partition plates selectively transparent or opaque at different regions. The upper portion of partition plates can be transparent to allow light from blue sub-pixels to pass through to adjacent sub-pixel regions, effectively increasing the light output area of blue sub-pixels. This local modification to light transmission properties balances the light intensity across red, green, and blue sub-pixels without increasing the physical area of each sub-pixel, thereby maintaining high pixel density.
Data Source
AI summary
An OLED panel includes a plurality of pixels. Each pixel includes a first sub-pixel, a second sub-pixel and a third sub-pixel spaced from each other by a plurality of baffle plates. The first sub-pixel of each pixel is located adjacent to that of a neighboring pixel. The first sub-pixel of each pixel is spaced from that of the neighboring pixel by a partition plate. The partition plate has a height less than a height of each baffle plate.