AMOLED Pixel Sub-pixel Segmentation for Luminous Efficiency
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Solution Overview
Problem
The low luminous efficiency of blue light materials in AMOLED display panels requires a high driving current from the TFT driver, reducing the lifespan and increasing power consumption, leading to potential damage to the display.
Innovation Solution
The method employs a pixel configuration with four sub-pixels (red, green, light blue, and dark blue) where only one blue sub-pixel is used with red and green to display images, leveraging the higher luminous efficiency of cyan light materials to improve AMOLED efficiency and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a large driving current is supplied to enable sufficient blue light output, then the luminous efficiency is improved, but the lifetime of blue light materials is reduced and power consumption increases
Solution Approach 1:
The blue sub-pixel is divided into two separate sub-pixels (third and fourth sub-pixels) with different chromaticity characteristics. By segmenting the blue light generation function, the patent can selectively use different sub-pixels based on image content, thereby reducing the overall driving current and extending material lifetime while maintaining luminous efficiency.
Solution Approach 2:
The patent changes the chromaticity parameter of blue sub-pixels by introducing two distinct blue sub-pixels with different chromaticity coordinates. This allows the system to adjust the effective blue light output characteristics dynamically, reducing the need for high driving currents while maintaining sufficient luminous efficiency for display requirements.
2Use of energy by moving object
If a large driving current is supplied to enable sufficient blue light output, then the luminous efficiency is improved, but the power consumption increases
Solution Approach 1:
By dividing the blue sub-pixel into two segments with different chromaticity characteristics, the system can selectively activate only the necessary sub-pixels for each display scenario, reducing the total power consumption while maintaining sufficient luminous efficiency for the required blue light output.
Solution Approach 2:
The patent modifies the chromaticity parameters of blue sub-pixels to create two distinct types, enabling the system to optimize power consumption by selecting the appropriate sub-pixel combination based on the display content and required color accuracy, thereby reducing overall power consumption while maintaining luminous efficiency.
3Use of energy by stationary object
If only one blue sub-pixel is used with red and green sub-pixels, then the luminous efficiency is improved and power consumption is reduced, but the chromaticity display range may be limited
Solution Approach 1:
The blue sub-pixel is segmented into two distinct sub-pixels with different chromaticity characteristics, allowing the system to selectively use different sub-pixels to expand the overall chromaticity display range while maintaining low power consumption operation.
Solution Approach 2:
The two blue sub-pixels serve multiple functions: one optimized for power-efficient operation and the other for expanding chromaticity range. This multi-functionality allows the system to adapt to different display requirements, achieving both low power consumption and wide chromaticity display range.
Data Source
AI summary
A first sub-pixel, a second sub-pixel and a third sub-pixel of a pixel are utilized to display a first white image, then a first brightness of the first sub-pixel and a first brightness of the second sub-pixel are measured. The first sub-pixel, the second sub-pixel and a fourth sub-pixel of the pixel are utilized to display a second white image, then a second brightness of the first sub-pixel and a second brightness of the second sub-pixel are measured. How image data should be displayed is determined according to whether the first brightness of the first sub-pixel is greater than the second brightness of the first sub-pixel, whether the first brightness of the second sub-pixel is greater than the second brightness of the second sub-pixel, and whether a chromaticity coordinate of the image data is within a chromaticity range capable of being displayed by the first, second and third sub-pixels.