Liquid Crystal Display Thermal Equilibrium via Air Circulation
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Solution Overview
Problem
Liquid crystal display devices using direct bonding techniques face thermal deformation issues due to high-temperature radiant heat, leading to image quality deterioration and damage, especially in high-temperature environments.
Innovation Solution
A liquid crystal display device design that creates a space between the liquid crystal display panel and the backlight unit to allow air circulation, achieving thermal equilibrium and effective cooling through a sealed internal space, eliminating the need for external air introduction and filter maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If direct bonding technique is used to attach glass to liquid crystal display panel, then image quality is improved by preventing separation, but thermal deformation occurs due to high-temperature radiant heat transfer
Solution Approach 1:
A heat-resistant adhesive layer is introduced as an intermediary between the glass and the liquid crystal display panel. This adhesive layer acts as a thermal barrier that blocks high-temperature radiant heat from the glass from transferring to the panel, while still maintaining the direct bonding structure's image quality benefits by preventing separation.
Solution Approach 2:
The patent creates a thermally isolated environment between the glass and panel by using the heat-resistant adhesive to establish a thermal barrier zone. This inert thermal environment protects the liquid crystal display panel from thermal deformation while allowing the direct bonding structure to function.
2Stability of the object's composition
If glass is spaced apart from liquid crystal display panel by predetermined interval, then thermal deformation is reduced, but image quality deteriorates due to separation
Solution Approach 1:
The heat-resistant adhesive serves as a mediator that enables thermal isolation without requiring physical spacing. It provides the thermal barrier function that would otherwise require a gap, while maintaining optical contact to preserve image quality.
Solution Approach 2:
The patent changes the thermal parameters of the bonding interface by using a heat-resistant adhesive with specific thermal properties. This allows the bonding distance to be minimized while maintaining thermal protection, effectively decoupling the thermal isolation function from the optical separation issue.
3Temperature
If cooling space is created between liquid crystal display panel and backlight unit, then thermal equilibrium is achieved through air circulation, but device complexity increases
Solution Approach 1:
The cooling space is merged with the existing structural design by utilizing the natural gap between the liquid crystal display panel and backlight unit. The air circulation cooling function is integrated into this existing space without requiring separate cooling chambers or additional structural components.
Solution Approach 2:
The cooling system utilizes natural air circulation within the device's existing structure. The air flow is driven by temperature differences and convection currents that naturally occur within the sealed enclosure, eliminating the need for active cooling mechanisms like fans or pumps.
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 design effectively prevents thermal deformation and maintains image quality by doubling the time before yellowing occurs, achieving twice the heat dissipation of traditional methods and maintaining performance in high-temperature conditions.
Implementation Method 1
a space between a liquid crystal display panel and a backlight unit through which air moves
Implementation Method 2
heat generated from the glass is transferred to the liquid crystal display panel
Implementation Method 3
when the display module is used in an environment exposed to direct sunlight or other high-temperature heat sources for a predetermined time, high-temperature radiant heat may be generated in the glass
Data Source
AI summary
Disclosed is a liquid crystal display device including: a liquid crystal display panel for displaying an image; a backlight unit for irradiating light toward a rear surface of the liquid crystal display panel; a cover bottom formed therein with a space in which the liquid crystal display panel and the backlight unit are installed; and a glass attached to a front surface of the liquid crystal display panel to protect the liquid crystal display panel, wherein the liquid crystal display panel and the backlight unit are spaced apart from each other so that air moves through a space between the liquid crystal display panel and the backlight unit. Accordingly, a sealed space is formed inside the liquid crystal display device, and the air inside the sealed space is circulated, so that thermal equilibrium is induced inside the sealed space.