Display Panel Sub-Pixel Segmentation for Efficient Color Control
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Solution Overview
Problem
Inorganic light-emitting devices, such as micro-LEDs, face issues with varying luminous efficiency based on wavelength and voltage, leading to color coordinate deviations and image quality deterioration due to high voltages.
Innovation Solution
A display panel design with multiple sub-pixels of different colors, each connected to specific emission lines, allowing for optimized voltage application and duty ratios to drive each sub-pixel in its maximum efficiency region, enhancing image quality and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If voltage is increased to improve luminous efficiency of light-emitting elements, then efficiency is improved, but luminance becomes too high causing color coordinate and white balance deviation
Solution Approach 1:
The pixel is divided into multiple sub-pixels (first sub-pixel and second sub-pixel) with different light-emitting elements, allowing independent voltage control for each sub-pixel to optimize efficiency while maintaining color accuracy
Solution Approach 2:
Different sub-pixels are assigned different driving voltages based on their specific light-emitting characteristics, enabling each sub-pixel to operate at its optimal efficiency point without causing overall luminance deviation
2Illumination intensity
If voltage is increased to drive light-emitting elements at high luminance, then luminance is improved, but image quality deteriorates
Solution Approach 1:
The pixel is segmented into multiple sub-pixels that can be driven independently, allowing the system to achieve high luminance through combined output while maintaining image quality through coordinated control of each sub-pixel
Solution Approach 2:
The patent employs periodic scanning of gate lines to sequentially activate different sub-pixels, enabling high luminance output through time-division multiplexing while maintaining image quality through precise timing control
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves the lifetime and efficiency of light-emitting elements by driving them at high luminance without deteriorating image quality, addressing defects and ensuring consistent color output.
Implementation Method 1
The electroluminescent display device may use light emitting elements arranged in each pixel to emit light by itself without a backlight
Data Source
AI summary
The present disclosure relates to a display panel and a display device including the same, wherein each of the pixels includes a sub-pixel of first color, including a first-first sub-pixel and a first-second sub-pixel; a sub-pixel of second color, including a second-first sub-pixel and a second-second sub-pixel; and a sub-pixel of third color, including a third-first sub-pixel and a third-second sub-pixel. Gate lines include a first EM line which connected to the sub-pixel of first color and to which a first light emission signal is applied; and a second EM line which is connected to the sub-pixel of second color and to which a second light emission signal is applied.