Display Panel Thermal Sensor Integration for Accurate Temperature Sensing
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Solution Overview
Problem
Existing electronic paper display panels face challenges in accurately sensing temperature due to the limited configuration and positioning of thermal sensors, which affects display quality.
Innovation Solution
A display panel design that includes a substrate with a thermal sensor, sensing traces, a pixel layer, and a display medium layer, where the thermal sensor is strategically positioned and connected to independent sensing traces, allowing for improved thermal sensing accuracy by integrating the thermal sensor directly on the substrate and isolating it from the pixel layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If thermal sensors are disposed on a flexible circuit board connected to the display panel, then the display panel can be assembled with standard components, but the thermal sensors cannot accurately sense the temperature on the panel
Solution Approach 1:
The patent merges the thermal sensor directly onto the display panel substrate, integrating the sensing function into the panel structure itself rather than using a separate flexible circuit board. This integration allows the sensor to be positioned at optimal locations for accurate temperature measurement while maintaining assembly feasibility through standardized manufacturing processes.
Solution Approach 2:
The patent introduces independent sensing traces as an intermediary element that connects the thermal sensor to the control circuitry. These dedicated traces separate the thermal sensing signal path from the pixel signal lines, preventing interference and enabling accurate temperature sensing without compromising the display signal transmission.
2Measurement precision
If thermal sensors are integrated directly on the substrate with independent sensing traces, then thermal sensing accuracy is improved, but the device structure becomes more complex
Solution Approach 1:
The patent segments the conductive traces into distinct functional groups: independent sensing traces for thermal measurement and separate signal lines for pixel control. This segmentation prevents signal interference and allows each trace type to be optimized for its specific function, improving sensing accuracy without requiring a complete redesign of the entire circuit architecture.
Solution Approach 2:
The substrate serves multiple functions: it acts as the structural base for the display panel, the mounting platform for thermal sensors, and the carrier for both sensing traces and pixel signal lines. This multi-functionality reduces the need for additional separate components and simplifies the overall device structure despite the added sensing capabilities.
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 configuration enhances the accuracy of thermal sensing, thereby improving the overall display quality and performance of electronic paper display panels.
Implementation Method 1
the thermal sensor is attached on the substrate... the thermal sensor... connected to the sensing traces... thermal sensing accuracy
Data Source
AI summary
A display panel including a substrate, a thermal sensor, a plurality of sensing traces, a pixel layer, and a display medium layer is provided. The substrate has a display area. The thermal sensor is attached on the substrate. The sensing traces are disposed on the substrate and connected to the thermal sensor. The pixel layer disposed on the substrate includes a pixel structure and a plurality of signal lines. The pixel structure is disposed in the display area and connected to the signal lines. The signal lines of the pixel layer are independent from the sensing traces. The display medium layer is disposed on the substrate and the pixel layer is located between the display medium layer and the substrate. A display apparatus and a method of fabricating the display panel are also provided.