Alternating Sub-Pixel Drive for OLED Service Life Extension
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Solution Overview
Problem
OLED display panels have a short service life due to the aging of OLED materials during long-term operation, limiting their performance and competitiveness.
Innovation Solution
A display panel design featuring alternating first and second sub-pixels with the same luminous color, where each is driven by a corresponding pixel circuit, allowing them to emit light alternately when displaying multiple frames, thereby prolonging the service life and improving performance and competitiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If OLED sub-pixels continuously emit light to display images, then image display function is achieved, but OLED material ages rapidly and service life is shortened
Solution Approach 1:
The invention divides the display panel into multiple image display units (first image display unit and second image display unit), each comprising sub-pixels of the same color. These units are driven alternately by different pixel circuits (first pixel circuit and second pixel circuit), allowing the OLED material in each unit to rest while the other is active, thereby reducing cumulative aging and extending service life.
2Duration of action of moving object
If multiple pixel circuits are added to enable alternating emission, then service life is extended, but device complexity increases
Solution Approach 1:
The invention creates a duplicate set of pixel circuits (second pixel circuit copying the structure of the first pixel circuit) to drive the second image display unit. This copying approach allows for systematic alternation between units while maintaining circuit design consistency, making the increased complexity manageable and scalable.
Data Source
AI summary
A display panel and a display device, related to the field of display technology. The display panel includes a first sub-pixel, a first pixel circuit, a second sub-pixel and a second pixel circuit. The first sub-pixel and the second sub-pixel have the same luminous color. When the display panel is configured to display a same frame of image, the first sub-pixel is driven by the first pixel circuit to emit light, or the second sub-pixel is driven by the second pixel circuit to emit light. In this case, when multiple frames of images are continuously displayed by the display panel, the first sub-pixel and the second sub-pixel can emit light alternately, such that the service life of the display panel can be prolonged, and the performance and competitiveness of the product can be improved.