Multi-Driver Display Thermal Profiling for Irregular Panels
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Solution Overview
Problem
Display devices with non-rectangular shapes face challenges in managing temperature profiles due to varying load distributions across drivers, leading to inconsistent display quality.
Innovation Solution
A display device with multiple drivers and controllers that calculate load ratios and generate temperature profiles based on image data, using grayscale voltage conversion and interpolation to adjust data voltages for optimal thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If display panels with non-rectangular shapes are used to suit in-vehicle positions, then adaptability to various mounting positions is improved, but temperature distribution uniformity deteriorates due to varying load distributions across drivers
Solution Approach 1:
The patent applies local quality by generating different temperature profiles for different regions of the display panel. The controller divides the panel into multiple regions and creates specific temperature profiles for each region based on local load characteristics, allowing each area to be managed according to its specific thermal requirements rather than applying a uniform approach across the entire non-rectangular panel
Solution Approach 2:
The patent segments the display panel into multiple regions with different thermal characteristics. By dividing the panel and assigning separate temperature profiles to each segment, the system can address the varying load distributions across different drivers independently, resolving the temperature uniformity issue while maintaining the non-rectangular shape adaptability
2Measurement precision
If multiple drivers are used to manage different regions of the display panel, then temperature management precision is improved, but device complexity increases
Solution Approach 1:
The patent merges the temperature management function into the existing controller that already handles driver control. By integrating temperature profile generation and compensation functions into the controller, the system achieves precise temperature management without adding separate dedicated temperature control devices, thus avoiding excessive complexity
Solution Approach 2:
The controller is designed to perform multiple functions: driving the display panel, calculating load ratios for different drivers, generating temperature profiles, and applying temperature compensation. This multi-functional approach allows precise temperature management while avoiding the need for separate specialized components that would increase device complexity
Data Source
AI summary
A display device includes: a display panel including pixels; a first driver supplying data voltages to A pixels using first image data; a second driver supplying data voltages to B pixels smaller than the A pixels using second image data; a third driver disposed adjacent to the second driver in a first direction, the third driver supplying data voltages corresponding pixels using third image data; a first controller calculating a first load ratio of the first driver using the first image data, and a second load ratio of the second driver using the second image data; and a second controller calculating a third load ratio of the third driver using the third image data. The first controller receives the third load ratio from the second controller, and generates a first temperature profile for the first driver and the second driver using the first, the second, and the third load ratios.