Liquid Crystal Display Panel Temperature Control via Transparent Resistor
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Solution Overview
Problem
Liquid crystal display apparatuses experience degraded displaying quality due to uneven temperature distribution in the liquid crystal layer, which affects the arrangement speed of liquid crystal molecules and results in incomplete image formation, especially when forming moving images.
Innovation Solution
A liquid crystal display apparatus incorporating a panel temperature adjusting member with a transparent resistor and power supply, where the resistor emits more heat to regions farther from the light source, maintaining a uniform temperature across the liquid crystal display panel by varying the thickness and number of transparent conductive film or pattern lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light source part generates and provides light at a side of the light guide plate, then the liquid crystal display panel receives sufficient light for image display, but the region close to the light source part becomes overheated while the distant region remains underheated, causing uneven temperature distribution
Solution Approach 1:
The transparent resistor is designed with non-uniform thickness or non-uniform pattern line density, creating different heat generation characteristics in different regions. The region distant from the light source part has greater thickness or more pattern lines, generating more heat locally, while the region close to the light source has lesser thickness or fewer pattern lines, generating less heat. This local differentiation resolves the temperature distribution issue caused by uniform light source illumination.
2Speed
If the liquid crystal layer operates at uneven temperature, then the arrangement speed of liquid crystal molecules varies across different portions, but this results in incomplete arraying of liquid crystal molecules and degraded displaying quality
Solution Approach 1:
The patent changes the physical parameter of the transparent resistor (thickness or pattern line density) to control the heat generation parameter. By adjusting these parameters spatially, the temperature parameter of the liquid crystal layer is regulated to maintain uniformity across different portions, ensuring consistent liquid crystal response speed and reliable displaying quality.
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 solution ensures a uniform temperature distribution across the liquid crystal display panel, stabilizing the displaying quality by preventing uneven heating and ensuring complete image formation.
Implementation Method 1
The transparent resistor emits a larger amount of heat to a region of the liquid crystal display panel, which is distant from the light source part, than to a region close to the light source part
Data Source
AI summary
A liquid crystal display apparatus includes a liquid crystal display panel which displays an image, a light guide plate, a backlight unit including a light source part which generates and supplies light, and a panel temperature adjusting member on a surface of the liquid crystal display panel. The panel temperature adjusting member includes a transparent resistor, and a power supply which supplies power to the transparent resistor. The transparent resistor emits a larger amount of heat to a region of the liquid crystal display panel, which is distant from the light source part, than to a region close to the light source part, such that the liquid crystal display panel has uniform temperature distribution.