Display Panel Temperature Sensing via Shielded Photoelectric Detector
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Solution Overview
Problem
Existing display panels lack real-time temperature monitoring and regulation, which affects their luminous effect and service life due to temperature fluctuations.
Innovation Solution
A display panel structure incorporating a photoelectric detector with light-shielding layers and a temperature regulation method using dark current-temperature correlation to monitor and adjust temperatures in real time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If temperature monitoring and regulation components are added to the display panel, then temperature control capability is improved, but device complexity increases
Solution Approach 1:
The photoelectric detector is integrated into the display panel structure by merging it with existing layers. The detector combines a first electrode, active layer, and second electrode that are incorporated within the panel's existing passivation and light-shielding layers, eliminating the need for separate external monitoring components.
Solution Approach 2:
The first light-shielding layer serves dual functions: it shields the active layer from ambient light to enable accurate temperature monitoring through dark current measurement, and it also functions as part of the display panel's light management structure. The first electrode serves both as an electrical contact and as a component of the photoelectric detector structure.
2Measurement precision
If light-shielding layers are added to protect the active layer, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The first light-shielding layer is merged with the detector structure, positioned to cover the active layer while allowing electrical connection through the first electrode. This integration eliminates the need for separate light-shielding components and reduces overall structural complexity.
Solution Approach 2:
The first electrode acts as an intermediary component that allows electrical connection to the active layer while the light-shielding layer blocks ambient light. This intermediary structure enables both electrical functionality and optical shielding without requiring separate complex assemblies.
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
Enables real-time temperature monitoring and regulation, maintaining optimal operating conditions and extending the service life of the display panel.
Implementation Method 1
obtaining dark current values of a photoelectric detector at different temperatures to obtain a temperature-current fitting curve; obtaining a real-time dark current value of the photoelectric detector
Data Source
AI summary
A display panel and a temperature regulation method for a display panel are provided. The display includes a substrate, a thin film transistor layer, a first passivation layer, a photoelectric detector, a first light-shielding layer, and a second light-shielding layer. The first light-shielding layer is disposed on one side of the photoelectric detector away from the substrate. The second light-shielding layer is disposed on the lateral of the photoelectric detector.