Integrated Temperature Sensing Display Panel for Luminance Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Silicon-based OLED micro displays face challenges in maintaining consistent luminance due to temperature variations, which affect the performance of virtual and augmented reality applications.
Innovation Solution
A display panel with integrated temperature sensing and trim circuits that compensate the common supply voltage based on temperature sensing currents and trim currents, ensuring accurate feedback and correction to maintain consistent luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If temperature sensing and trim circuits are integrated into the display panel, then luminance stability is improved, but device complexity increases
Solution Approach 1:
The temperature sensing circuit and trim circuit are integrated into the display panel structure, combining multiple functions (temperature sensing, voltage trimming, luminance compensation) into a unified system. The circuits share common structural elements and are coordinated through integrated control, allowing temperature compensation without requiring separate external components.
Solution Approach 2:
The display panel performs self-diagnosis and self-compensation through the integrated temperature sensing circuit that automatically detects temperature changes and triggers the trim circuit to adjust the common supply voltage, eliminating the need for external control systems or manual intervention.
2Measurement precision
If multiple circuits are integrated in the non-display region, then compensation accuracy is improved, but manufacturing difficulty increases
Solution Approach 1:
The temperature sensing and trim circuits are specifically positioned in the non-display region, utilizing the available space efficiently. This local placement allows for optimized circuit design in specific areas without affecting the overall display region, enabling precise temperature sensing and compensation while maintaining manufacturing feasibility.
Data Source
AI summary
Provided is a display panel. The display panel includes: a substrate, having a display region and a non-display region at least partially surrounding the display region; a plurality of pixels, disposed in the display region, wherein the plurality of pixels are coupled to a drive circuit and configured to emit light; a temperature sensing circuit, disposed in the non-display region, wherein the temperature sensing circuit is coupled to a first reference power supply terminal, a second reference power supply terminal and a first power supply terminal, and further coupled to the drive circuit; and a trim circuit, disposed in the non-display region, wherein the trim circuit is coupled to the first reference power supply terminal, a plurality of trim control terminals and the first power supply terminal, and further coupled to the drive circuit.