Rear-Sensing Display Panel Compensation for Luminance Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in achieving luminance uniformity due to variations in characteristic values of circuit elements over time, requiring complex subpixel and signal line structures for compensation, which hinders the implementation of high aperture ratio and resolution.
Innovation Solution
A display device with a simple subpixel and signal line structure that uses a rear sensing structure with movable sensor modules to accurately sense and compensate for luminance deviations between subpixels, eliminating the need for complex sensing driving methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current compensation techniques are used to sense luminance deviation between subpixels, then luminance uniformity can be improved, but the subpixel structure and signal line structure become complicated
Solution Approach 1:
The patent inverts the sensing approach by detecting luminance from the rear surface of the display panel rather than from the front. This allows the use of a simple moving bar with sensor modules that scans behind the panel, eliminating the need for complex in-panel sensing structures, additional signal lines, or modified subpixel architectures while still achieving accurate luminance deviation detection for compensation
Solution Approach 2:
The patent introduces a moving bar as an intermediary device that carries sensor modules behind the display panel. This external sensing mechanism acts as a mediator to measure luminance without requiring integration into the complex subpixel structure, thereby simplifying the overall system while maintaining compensation capability
2Reliability
If current compensation techniques are used to sense luminance deviation, then luminance uniformity can be improved, but the implementation of high aperture ratio and high resolution is hindered
Solution Approach 1:
By inverting the sensing direction to the rear surface, the patent eliminates the need for complex in-panel sensing structures that would consume display area. The moving bar scans behind the panel, allowing the front surface to be fully utilized for high-resolution display with high aperture ratio, while compensation is achieved through the external rear-surface sensing mechanism
Solution Approach 2:
The patent moves the sensing operation to another dimension by placing sensor modules on the rear surface of the display panel rather than integrating them within the front-facing subpixel structure. This dimensional shift allows independent optimization of both the display area (for high aperture ratio and resolution) and the sensing mechanism (for accurate luminance measurement) without mutual interference
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables accurate compensation for luminance deviations, allowing for a higher aperture ratio and resolution while simplifying the manufacturing process and eliminating the need for complex subpixel and signal line structures.
Implementation Method 1
a plurality of sensor modules mounted on the moving bar and configured to sense sensing light emitted from a rear surface of the display panel
Data Source
AI summary
A display device includes a display panel including a plurality of light emitting elements, a moving bar movable on a rear surface of the display panel, and a plurality of sensor modules mounted on the moving bar and configured to sense sensing light emitted from a rear surface of the display panel.