OLED Display Panel Pixel Area Design for Color Shift Prevention
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Solution Overview
Problem
Conventional OLED display panels experience color shift due to equal areas of red, green, and blue pixels, leading to poor long-term display performance.
Innovation Solution
A display panel design with pixel repeating units where the areas of red, green, and blue pixels are inversely proportional to their luminous efficiencies, and have unique shapes and edge orientations, arranged alternately in specific directions to optimize aperture ratios and reduce color shift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If equal areas are used for red, green, and blue pixels in conventional OLED display panels, then manufacturing simplicity is maintained, but color shift occurs after long-term displaying
Solution Approach 1:
The patent applies local quality by assigning different areas to red, green, and blue pixels based on their specific luminous efficiency characteristics. Each pixel type has a customized area that compensates for its relative luminous efficiency, ensuring that all pixels contribute equally to overall display brightness. This resolves the contradiction by moving from uniform pixel areas (easy manufacturing) to optimized pixel areas (color accuracy stability).
Solution Approach 2:
The patent changes the area parameter of pixels according to their luminous efficiency characteristics. By adjusting pixel areas as a compensatory parameter, the invention balances the optical output of different colored pixels, preventing color shift during long-term operation while maintaining manufacturability through controlled parameter variation.
2Reliability
If pixel areas are adjusted according to luminous efficiency, then color accuracy stability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent manages device complexity by systematically varying pixel area parameters based on measured luminous efficiency data. This controlled parameter change approach balances color accuracy improvement with manufacturing feasibility, as the area ratios follow predictable patterns derived from luminous efficiency characteristics rather than arbitrary adjustments.
Data Source
AI summary
A display panel is provided. The display panel includes at least two first pixels, at least two second pixels, and at least two third pixels. An area of the first pixel, an area of the second pixel, and an area of the third pixel are inversely proportional to a luminous efficiency of a luminescent material of the first pixel, a luminous efficiency of a luminescent material of the second pixel, and a luminous efficiency of a luminescent material of the third pixel, respectively. The disclosure can avoid the drawback of color shift of the display panel.