Display Substrate Color-Segmented Data Lines for Lower Power
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Solution Overview
Problem
In conventional display devices, the difference in luminous efficiency between red and blue pixels leads to varying driving voltages, causing power consumption to increase when pixels of different colors are driven by the same data line.
Innovation Solution
A display substrate design where pixel driving circuitries in the same column are electrically coupled to a same data line, ensuring each data line provides a consistent voltage for a specific color, with anodes of light-emission elements coupled to corresponding pixel driving circuitries to emit light in the appropriate color, and connection lines facilitate electrical coupling between anodes and pixel driving circuitries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data lines in odd-numbered columns drive red pixels and blue pixels, then the display device can achieve full-screen coverage and high resolution, but the driving voltage jumps when pixels of different colors are driven by the same data line, leading to a square-level increase in power consumption
Solution Approach 1:
The patent segments the data line driving function by color. Instead of having odd-numbered data lines drive both red and blue pixels, the invention assigns specific data lines to specific colors (odd-numbered data lines drive red pixels, even-numbered data lines drive blue pixels). This segmentation eliminates voltage jumps on the same data line and reduces power consumption while maintaining high resolution display capability.
2Productivity
If data lines in odd-numbered columns drive green pixels, then the display device can achieve full-screen coverage, but the driving voltage jumps when pixels of different colors are driven by the same data line, leading to a square-level increase in power consumption
Solution Approach 1:
The patent segments the data line driving function by color. Instead of having odd-numbered data lines drive both green and other color pixels, the invention assigns specific data lines to specific colors (odd-numbered data lines drive green pixels, even-numbered data lines drive other color pixels). This segmentation eliminates voltage jumps on the same data line and reduces power consumption while maintaining full-screen coverage.
Data Source
AI summary
The present disclosure provides a display substrate and a display device. The display substrate includes a base substrate, and a plurality of data lines, a plurality of pixel driving circuitries and a plurality of light-emission elements on the base substrate. Each light-emission element includes an anode. The pixel driving circuitries in a same column are electrically coupled to a same data line, the data line is configured to provide a data voltage corresponding to a same color, and the pixel driving circuitries electrically coupled to the same data line correspond to the color. An anode of each light-emission element is electrically coupled to a corresponding pixel driving circuitry, and the pixel driving circuitry is configured to provide a driving signal to the light-emission element electrically coupled to the pixel driving circuitry to drive the light-emission element to emit light in a color corresponding to the pixel driving circuitry.