Integrated Temperature Sensor Line for LCD Panel
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Solution Overview
Problem
Conventional temperature sensors for liquid crystal displays (LCDs) are not accurately positioned to measure the temperature of the liquid crystal layer, leading to inaccurate temperature compensation and increased manufacturing costs due to separate installation on the rear side of the LCD, where temperature swings are larger.
Innovation Solution
Integrating a temperature sensing line as an electrical conductor on the same substrate as the thin film transistor array panel, allowing for precise temperature measurement close to the liquid crystal layer, reducing design redundancy and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the temperature sensor is disposed on the rear side of the LCD on the PCB, then the temperature detection is simplified, but the temperature measurement accuracy deteriorates because the detected temperature is significantly different from the actual LC layer temperature
Solution Approach 1:
The temperature sensing line is integrated directly into the LC panel assembly substrate, merging the temperature sensing function with the display panel structure. This eliminates the need for separate PCB mounting and enables direct measurement of the LC layer temperature, resolving the contradiction between installation simplicity and measurement accuracy.
Solution Approach 2:
The temperature sensing line acts as an intermediary element positioned between the heat-generating elements (lamps) and the LC layer, providing direct thermal coupling for accurate temperature detection without requiring separate sensor components on the rear side.
2Ease of manufacture
If the temperature sensor is separately installed on the PCB, then the manufacturing process is simplified, but the design redundancy increases and manufacturing cost increases
Solution Approach 1:
The temperature sensing line is formed on the same substrate as the LC panel assembly during the same manufacturing process, merging two separate components (display panel and temperature sensor) into a single integrated structure. This eliminates design redundancy and reduces manufacturing costs while maintaining ease of manufacture.
Solution Approach 2:
The substrate serves multiple functions: it acts as both the structural base for the LC panel assembly and the mounting platform for the temperature sensing line. This multi-functionality eliminates the need for separate sensor installation and reduces overall device complexity.
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 integration provides accurate temperature compensation, improves image quality by shortening response times, and simplifies the manufacturing process by eliminating the need for a separate temperature sensor, while minimizing errors from external light sensitivity.
Implementation Method 1
a temperature sensing line separate from the first and second signal lines, wherein the temperature sensing line is formed on the same layer as the first or second signal line
Data Source
AI summary
A temperature sensor for a display device is provided, which includes a substrate for the display devices, and a temperature sensing line formed on the substrate. The temperature sensing line is a conductor.