OLED Pixel Arrangement Structure for Extended Lifetime and Resolution
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Solution Overview
Problem
Organic Light-Emitting Diode (OLED) displays have a significantly shorter lifetime for blue-emitting devices compared to red and green devices, leading to premature yellowing of the display and reduced effective life, and conventional pixel structures reduce sub-pixel density and resolution.
Innovation Solution
A pixel arrangement structure with a first sub-pixel group, a common sub-pixel group, and a second sub-pixel group, where the common group includes a dark blue and a light blue sub-pixel, allowing for shared sub-pixel usage between two pixels to extend the lifetime and increase color gamut, while maintaining or improving resolution by reducing the usage time of dark blue sub-pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If conventional pixel structure with four sub-pixels per pixel is used to extend dark blue sub-pixel lifetime, then the lifetime of the display apparatus is improved, but the sub-pixel density and resolution are reduced
Solution Approach 1:
The patent merges two pixels (first pixel and second pixel) to share a common sub-pixel group containing dark blue and light blue sub-pixels. This sharing mechanism reduces the total number of dark blue sub-pixels needed while maintaining display quality, thereby extending their lifetime without sacrificing resolution. The shared group is controlled to serve both pixels, achieving resource optimization.
Solution Approach 2:
The common sub-pixel group with dark blue and light blue sub-pixels serves dual functionality by being shared between two different pixels (first pixel and second pixel). This multi-functional design allows the same sub-pixel group to contribute to both pixels' color display, reducing overall sub-pixel count and extending dark blue sub-pixel lifetime while maintaining resolution.
2Duration of action of stationary object
If dark blue sub-pixel usage is reduced to extend lifetime, then the lifetime is improved, but the color gamut may be compromised
Solution Approach 1:
The patent introduces light blue sub-pixels with different luminance characteristics to compensate for reduced dark blue sub-pixel usage. By adjusting the luminance parameters of light blue sub-pixels and optimizing their combination with dark blue sub-pixels in the shared group, the display maintains accurate color reproduction and wide color gamut while extending the lifetime of dark blue sub-pixels through reduced usage.
Data Source
AI summary
The present application discloses a pixel arrangement structure and a display apparatus, the pixel arrangement structure includes a plurality of pixel units, the pixel unit includes a first sub-pixel group, a common sub-pixel group, and a second sub-pixel group sequentially arranged in row direction, the first sub-pixel group includes a first red sub-pixel and a first green sub-pixel arranged in a column direction, the common sub-pixel group includes a dark blue sub-pixel and a light blue sub-pixel arranged in a column direction, the second sub-pixel group includes a second red sub-pixel and a second green sub-pixel arranged in a column direction, the first sub-pixel group and the common sub-pixel group form a first pixel, and the second sub-pixel group and the common sub-pixel group form a second pixel. The present application can increase the density of the sub-pixel arrangement, thereby increasing the resolution of the display apparatus.