Tapered Electrode Display Temperature Distribution Control
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Solution Overview
Problem
Liquid crystal display devices face display failures due to temperature variations, particularly when exposed to high temperatures, as existing methods cannot accurately specify temperature distribution across the display surface.
Innovation Solution
A display device with tapered electrodes arranged alternately in a first direction, capable of detecting electric resistance, voltage, and current to specify temperature distribution, utilizing a control unit that correlates electric resistance with temperature to execute commands based on temperature data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a temperature sensor detecting ambient temperature is used, then temperature control can be implemented, but the temperature distribution of the display surface cannot be specified
Solution Approach 1:
The display surface is divided into multiple measurement zones corresponding to different electrode positions. By segmenting the measurement area and using multiple electrodes arranged in a specific pattern, the system can detect temperature variations at different locations across the display surface, thereby obtaining temperature distribution information that a single ambient temperature sensor cannot provide.
Solution Approach 2:
The patent uses the liquid crystal material itself as an intermediary for temperature detection. The liquid crystal's electrical resistance changes with temperature, and this change is detected through electrodes. This intermediary approach allows temperature measurement without adding separate sensing elements that would disrupt the display surface.
2Measurement precision
If multiple electrodes are arranged to detect temperature distribution, then measurement capability improves, but device complexity increases
Solution Approach 1:
The electrodes serve multiple functions: they are used for both display control and temperature detection. By making the electrodes multi-functional, the system avoids adding separate temperature sensing elements, thereby reducing overall device complexity while still achieving temperature distribution measurement capability.
Solution Approach 2:
The temperature detection function is merged with the existing display electrode structure. The same electrodes used for liquid crystal control are also used for temperature sensing, combining two functions into one component set and reducing the number of separate elements needed in the system.
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
Effectively prevents display failures by specifying and managing temperature distribution, ensuring reliable operation even under high temperatures, and allowing for precise control to prevent overheating issues.
Implementation Method 1
a detecting unit that detects one of an electric resistance of the electrodes, a voltage, and a current, the voltage and the current corresponding to the electric resistance
Data Source
AI summary
According to an aspect, a display device comprising: a display unit; a plurality of electrodes arranged side by side in a first direction along a display surface of the display unit; a detecting unit that detects one of an electric resistance of the electrodes, a voltage, and a current; and a specifying unit that specifies temperature distribution of the display surface based on the one of the electric resistance of the electrodes, the voltage, and the current. The electrodes are tapered in a second direction along the display surface and orthogonal to the first direction, and the electrodes include a first electrode tapered toward one side in the second direction and a second electrode tapered toward the other side opposite to the one side. The first and second electrodes are alternately arranged side by side in the first direction.