Liquid Crystal Display Panel Integrated Heating Sensor for Low Temperature Operation
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Solution Overview
Problem
Liquid crystal display devices used in special environments, such as military or vehicle applications, face challenges in maintaining normal operation at low temperatures due to increased viscosity of liquid crystal materials, leading to slow response speeds and potential crystallization, and existing heating solutions often result in unnecessary power waste or inadequate heating.
Innovation Solution
A liquid crystal display panel design that includes heating sensors and electrodes integrated between the substrates, allowing for real-time temperature monitoring and controlled heating to ensure optimal operation without excessive energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heating measures are taken to ensure normal operation at low temperatures, then the liquid crystal display device can operate normally, but power is wasted when heating to temperatures exceeding what is required
Solution Approach 1:
The patent implements a feedback mechanism by integrating temperature sensing lines with the liquid crystal display structure to continuously monitor internal temperature. This real-time temperature information is fed back to the heating control system, which adjusts heating power accordingly, preventing both insufficient heating and excessive heating that would waste energy.
Solution Approach 2:
The patent replaces traditional external heating methods with an integrated heating system that uses the liquid crystal layer itself as a heating element. By applying voltage to the liquid crystal layer, it generates heat internally through dielectric heating, eliminating the need for separate external heating components and enabling precise temperature control.
2Reliability
If heating measures are taken to ensure normal operation at low temperatures, then the liquid crystal display device can operate normally, but heating may not reach the required temperature
Solution Approach 1:
The patent merges the temperature sensing function with the liquid crystal display structure by integrating temperature sensing lines into the display panel. This combination allows direct measurement of the liquid crystal layer temperature, ensuring accurate temperature monitoring and enabling the heating system to reach the required temperature threshold reliably.
3Reliability
If heating is applied to raise threshold voltage at low temperatures, then the liquid crystal display device can operate, but response speed becomes slow
Solution Approach 1:
The patent changes the physical state parameters of the liquid crystal material by controlling temperature through integrated heating. By maintaining the liquid crystal layer at an optimal temperature range, the system achieves both reliable operation and fast response speed, avoiding the slow response that occurs when heating is excessive or unnecessary.
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
The solution enables accurate temperature monitoring and controlled heating within the liquid crystal display panel, ensuring quick startup and stable operation in low-temperature environments while minimizing power waste and maintaining high display quality.
Implementation Method 1
at least one heating sensor disposed between the first base substrate and the second base substrate... Each of the at least one heating sensor includes at least one sub-sensor and two sensor terminals
Implementation Method 2
The liquid crystal display panel also includes at least one heating sensor disposed between the first base substrate and the second base substrate
Data Source
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AI summary
Liquid crystal display panel and liquid crystal display device are provided. A liquid crystal display panel includes a first substrate, a second substrate, and a liquid crystal layer therebetween. The first substrate includes a first base substrate, and gate lines and data lines, on the first base substrate and defining a plurality of sub-pixels. The second substrate includes a second base substrate. At least one heating sensor is disposed between the first and second base substrates. A non-display area includes a first non-display area, disposed around a display area, and a second non-display area, disposed around the first non-display area. Each heating sensor includes at least one sub-sensor and two sensor terminals, including a first and second sensor terminal, respectively connected to two ends of the at least one sub-sensor. At least one of the at least one sub-sensor is disposed in the first non-display area.