OLED Display Control Circuit Reducing Power via Luminance Chroma Transformation
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Solution Overview
Problem
The increasing resolution and brightness of OLED displays lead to higher power consumption, which is not effectively addressed by existing technologies without compromising visually perceived brightness.
Innovation Solution
A method and system for controlling OLED displays by transforming RGB values into luminance and chroma values, adjusting these based on control values, and generating new RGB values to reduce power consumption while maintaining perceived brightness, involving a system-on-chip (SoC) with conversion and adjustment circuits, and analyzing histogram patterns and application types to optimize display operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the resolution and brightness of OLED displays are increased, then the display quality is improved, but the power consumption increases
Solution Approach 1:
The patent transforms RGB color values into luminance and chroma parameters, then selectively adjusts the luminance values to reduce power consumption while preserving chroma information to maintain perceived brightness. This parameter transformation and selective adjustment resolves the contradiction between brightness quality and energy consumption.
2Measurement precision
If the resolution and brightness of displays are increased, then the display quality is improved, but the power consumption increases
Solution Approach 1:
The patent applies parameter transformation by converting high-resolution RGB data into luminance-chroma space, then selectively reducing luminance values. This allows maintaining resolution quality while reducing the energy required to drive the display at full brightness across all pixels.
Data Source
AI summary
In one example embodiment, a method of operating an image data processing circuit which controls an operation of an organic light-emitting diode (OLED) display includes transforming at least one first RGB value into at least one luminance value and at least one chroma value. The method further includes adjusting the at least one luminance value and the at least one chroma value based on at least one first control value. The method further includes generating at least one second RGB value based on the at least one adjusted luminance value and the at least one adjusted chroma value. The method further includes outputting the second RGB values to the OLED display.