Display Panel Sub-Pixel Control for Power Reduction
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Solution Overview
Problem
High-resolution displays in electronic devices, such as mobile phones and tablets, consume excessive power, which contradicts the demand for low power consumption and long battery life, especially in portable devices.
Innovation Solution
A display panel with a controller that switches between two modes: a full sub-pixel light emission mode for high-quality displays and a partial sub-pixel light emission mode to reduce power consumption, where at most two sub-pixels per pixel group are turned off in alternating frames to prevent defects like black spots and stripes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all sub-pixels are controlled to emit light for high-resolution display, then display quality and resolution are improved, but power consumption increases
Solution Approach 1:
The patent applies partial action by controlling only necessary sub-pixels to emit light rather than all sub-pixels. In the second display mode, at most two sub-pixels per pixel group are turned off, and the controller strategically selects which sub-pixels to activate based on picture content, achieving acceptable display quality while reducing power consumption compared to full sub-pixel emission mode
Solution Approach 2:
The patent implements periodic action through frame-by-frame analysis and alternating sub-pixel activation patterns. The controller analyzes each frame independently and switches between different sub-pixel combinations across adjacent frames, preventing persistent dark spots while maintaining reduced power consumption through periodic variation in sub-pixel usage
2Use of energy by moving object
If sub-pixels are turned off to reduce power consumption, then power consumption decreases, but display defects such as black spots and stripes may appear
Solution Approach 1:
The patent uses periodic action by alternating the activation patterns of sub-pixels across adjacent frames. The controller ensures that sub-pixels turned off in one frame are activated in subsequent frames, creating a temporal variation that prevents persistent dark spots and stripes from being perceived by the human eye, thus maintaining display quality while reducing power consumption
Solution Approach 2:
The patent applies dynamics by making the sub-pixel activation pattern adaptive and variable rather than static. The controller dynamically adjusts which sub-pixels are activated based on frame content analysis and temporal patterns, ensuring that no single sub-pixel remains off for extended periods, thereby preventing display defects while maintaining power savings
Data Source
AI summary
Disclosed are a display panel and an electronic device. The display panel includes sub-pixels arranged in an array, wherein each pixel row of the sub-pixels comprises 3n sub-pixels, with every six adjacent sub-pixels of the pixel row forming a pixel group, n≥2, and the six adjacent sub-pixels of the pixel group are arranged in sequential order in a first direction parallel to the row direction. The display panel further includes a controller, where in a first display mode the controller controls each of the sub-pixels to be charged to emit light; and in a second display mode the controller controls at most two sub-pixels of each of the pixel groups in at least one of the pixel rows to not emit light, and controls at most two sub-pixels of the pixel group which have same order in two adjacent frames of pictures to not emit light.