Display Panel Real-Time Light Intensity Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display panels face defects and performance degradation due to aging or defects in the array substrate, leading to inconsistent pixel aging and poor display performance over time, as existing methods fail to provide real-time measurement and compensation for light intensity changes in each pixel.
Innovation Solution
A display panel design incorporating a light-emitting element, a reflective layer, and an optical sensor, where the reflective layer directs light to the optical sensor to measure real-time light intensity, allowing the controller to adjust the light-emitting intensity to match ideal levels, ensuring consistent display performance without altering the panel's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no real-time measurement system is added, then the display panel structure remains simple, but display performance degrades due to pixel aging and substrate defects over time
Solution Approach 1:
The optical sensor is integrated within the display panel structure by nesting it in the same plane as the pixel units, allowing real-time light intensity measurement without adding external measurement devices. This nested configuration enables performance monitoring while maintaining a compact form factor.
Solution Approach 2:
A reflective layer is introduced as an intermediary component between the light-emitting element and the optical sensor. This reflective layer redirects light from the light-emitting element to the optical sensor, enabling indirect measurement of light intensity while keeping the sensor positioned away from the direct light path.
2Measurement precision
If the optical sensor is positioned close to the light-emitting element, then the light measurement is more accurate, but the sensor may be damaged by high light intensity
Solution Approach 1:
The reflective layer serves as a mediator that redirects light from the light-emitting element to the optical sensor at a safe distance. This intermediary component enables the sensor to measure light intensity accurately without being exposed to the high light intensity directly from the light-emitting element, thus preventing sensor damage.
3Speed
If the reflective layer overlaps with the light-emitting layer projection, then the light path is optimized, but the measurement of emitted light is interfered with
Solution Approach 1:
The reflective layer is positioned asymmetrically relative to the light-emitting layer, with its projection on the substrate not overlapping with the light-emitting layer projection. This asymmetric arrangement allows the reflective layer to efficiently redirect light to the optical sensor while avoiding interference with the light emission process of the light-emitting element.
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
This solution enables real-time compensation for light intensity, maintaining better display performance even after prolonged use by minimizing absorption and optimizing the light path, thus addressing the issue of pixel aging and substrate defects.
Implementation Method 1
a reflective layer provided on a light output side of the light-emitting element and configured to receive and reflect light emitted by the light-emitting element to generate reflected light
Implementation Method 2
an optical sensor configured to receive the reflected light and measure a light intensity of the reflected light
Data Source
AI summary
A display panel, a method for manufacturing the same, and a method for driving the same are provided, the display panel includes a base substrate; a plurality of pixel units on the base substrate; and a controller, at least one pixel unit comprising: a light-emitting element; a reflective layer provided on a light output side of the light-emitting element and configured to receive and reflect light emitted by the light-emitting element to generate reflected light; and an optical sensor configured to receive the reflected light and measure a light intensity of the reflected light, wherein the controller is configured to adjust a light-emitting intensity of the light-emitting element based on the light intensity, wherein the light-emitting element comprises a light-emitting layer, an orthographic projection of the reflective layer on the base substrate does not overlap with an orthographic projection of the light-emitting layer on the base substrate.