Display Panel Cooling via Segmented Air Paths
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Solution Overview
Problem
Panel type display devices, such as LCDs and PDPs, experience internal temperature increases due to inter-heating between the display panel and circuit boards, leading to surface temperature elevation and liquid crystal deterioration.
Innovation Solution
The implementation of separate first and second cooling fluid paths within the display device case, where the display panel and circuit boards are cooled independently by distinct air flow paths, preventing heat transfer between them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the display panel and circuit boards are mounted in the same space (interior of case), then the device structure is simplified and compact, but the internal temperature increases due to inter-heating between components
Solution Approach 1:
The interior of the case is divided into a first cooling fluid path for the display panel and a second cooling fluid path for the circuit boards, separating the cooling zones to prevent inter-heating while maintaining a compact structure
Solution Approach 2:
A partition plate is introduced as an intermediary component to physically separate the first and second cooling fluid paths, preventing heat transfer between the display panel and circuit boards while allowing both to be mounted in the same case
2Device complexity
If a single cooling fluid path is used for both display panel and circuit boards, then the cooling system is simpler, but the cooling efficiency decreases due to heat transfer between components
Solution Approach 1:
The cooling system is segmented into two independent cooling fluid paths, allowing each component (display panel and circuit boards) to be cooled separately without heat transfer between them, thereby improving cooling efficiency
Solution Approach 2:
The harmful heat transfer effect is extracted and eliminated by separating the cooling paths, removing the negative interaction between the display panel and circuit boards while maintaining effective cooling for each
3Device complexity
If air cooling is used without separation, then the cooling structure is simpler, but the surface temperature of the display panel increases causing liquid crystal deterioration
Solution Approach 1:
The cooling structure is segmented into separate zones for the display panel and circuit boards, preventing heat from the circuit boards from reaching the display panel and causing deterioration
Solution Approach 2:
The partition plate acts as a thermal barrier intermediary, blocking heat transfer from the circuit board cooling zone to the display panel cooling zone, thereby protecting the liquid crystal from temperature-related deterioration
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 cooling structure effectively minimizes internal case temperature, reducing the display panel's surface temperature by 5 to 7°C compared to conventional designs, enhancing cooling efficiency and preventing heat-related deterioration.
Implementation Method 1
Air inlets through which air flows in the first cooling fluid path are formed at a lower portion of the rear case, and air outlets through which air is exhausted from the first cooling fluid path are formed at an upper portion of the rear case
Implementation Method 2
a second cooling fluid path which cools the circuit board
Data Source
AI summary
A panel type display device for minimizing temperature increase in the interior of a case and a display panel. The display device includes a case, a display panel mounted in an interior of the case, at least one circuit board for controlling the display panel, a first cooling fluid path for cooling the display panel, and a second cooling fluid path for cooling the circuit board. In the display device, the first and second cooling fluid paths are separated from each other.