Display Pixel Sensing Signals for Low-Power Brightness Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices experience power consumption issues and brightness deviations due to changes in feature values of pixels over time, particularly in driving transistors and organic light emitting diodes, which affect image quality.
Innovation Solution
A display device and driving method that optimize power consumption by adjusting transmission voltage values during sensing processes, using a data driver to convert sensing data into differential signals and a timing controller to generate compensation values based on these signals, thereby reducing power consumption and design complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If sensing data is transmitted using fixed amplitude differential signals, then transmission stability is maintained, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the amplitude of differential signals variable rather than fixed. The data driver dynamically adjusts the amplitude based on the pattern of sensing data being transmitted, using larger amplitudes for certain patterns and smaller amplitudes for others, thereby optimizing power consumption while maintaining transmission reliability
Solution Approach 2:
The patent changes the parameter of signal amplitude from a constant value to a variable value that depends on the sensing data pattern. The system selectively applies different amplitude levels (first amplitude, second amplitude, third amplitude) based on the specific pattern being transmitted, achieving energy optimization without sacrificing transmission stability
2Manufacturing precision
If pixel feature values are compensated using traditional methods, then image quality is maintained, but power consumption and design complexity increase
Solution Approach 1:
The patent implements self-service by enabling the data driver to autonomously adjust differential signal amplitudes based on sensing data patterns without requiring complex external control mechanisms. The timing controller provides compensation values, but the data driver independently manages amplitude variations, simplifying the overall system design while maintaining image quality
Solution Approach 2:
The data driver performs multiple functions: it converts sensing data to differential signals, adjusts amplitudes based on patterns, transmits signals to the timing controller, and applies compensation values. This multi-functionality reduces the need for separate dedicated circuits, thereby reducing design complexity while maintaining compensation effectiveness
Data Source
AI summary
Disclosed is a display device, comprising: a display panel including pixels; a data driver configured to generate sensing data comprising a sensing result that is indicative of feature values of the pixels and convert the sensing data into a differential signal where an amplitude of the differential signal is varied by the data driver based on a pattern of the sensing data and output the differential signal; and a timing controller configured to receive the differential signal, generate a compensation value for compensating image data based on the differential signal and transmit the compensation value to the data driver, wherein the data driver is configured to compensate the image data based on the compensation value received from the timing controller.