Display Panel Heat Dissipation Sheet for PCB Temperature Uniformity
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Solution Overview
Problem
Display devices with light emitting diodes (LEDs) face temperature deviations and heat concentration issues, leading to spots and color differences, which degrade display quality due to uneven heat distribution from printed circuit boards.
Innovation Solution
A display device design that incorporates a heat dissipation sheet between the display panel and the printed circuit board, along with a plate bottom and cover bottom structure, to uniformly diffuse heat and reduce temperature deviations across the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a printed circuit board is disposed on the rear surface of the display panel, then electrical connection and signal transmission are achieved, but heat concentration occurs leading to temperature deviation and display quality degradation
Solution Approach 1:
A heat dissipation sheet is introduced as an intermediary component between the printed circuit board and the display panel. This heat dissipation sheet includes a heat dissipation portion that contacts the printed circuit board to absorb and diffuse heat, and a heat transfer portion that transfers the diffused heat to the display panel, thereby eliminating temperature deviation while maintaining electrical connection
Solution Approach 2:
The patent changes the thermal parameters of the system by introducing a heat dissipation sheet with specific thermal conductivity characteristics. The sheet transforms the heat flow pattern from concentrated (direct contact) to diffused (through the sheet), changing the temperature distribution parameter across the display panel
2Power
If heat is generated from the printed circuit board, then device operation is enabled, but heat concentration on partial area causes spots and color differences
Solution Approach 1:
The heat dissipation sheet acts as a mediator that intercepts heat from the printed circuit board before it concentrates on the display panel. The heat dissipation portion absorbs the generated heat and the heat transfer portion distributes it uniformly, preventing the formation of spots and color differences while allowing continuous device operation
Solution Approach 2:
The patent converts the harmful concentrated heat into a beneficial uniform heat distribution. The heat dissipation sheet transforms the harmful thermal concentration that causes display defects into a beneficial uniform temperature field that maintains display quality during operation
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 effectively minimizes temperature deviations and improves display quality by ensuring uniform heat distribution, reducing spots and color differences, and enhancing the overall performance of the display device.
Implementation Method 1
heat dissipation sheet disposed between the display panel and the printed circuit board... heat generated from a printed circuit board can be uniformly diffused to the entire display panel
Data Source
AI summary
Provided is a display device. According to an aspect of the present disclosure, there is provided a display device. The display device comprises a display panel, a cover bottom which is disposed on a rear surface of the display panel and includes a first opening. The display device further comprises a plate bottom which is disposed to overlap the first opening on the rear surface of the display panel. The display device further comprises a printed circuit board which is disposed on a rear surface of the plate bottom and is connected to the display panel. The display device further comprises a heat dissipation sheet disposed between the display panel and the printed circuit board. Therefore, heat generated from a printed circuit board can be uniformly diffused to the entire display panel, and the entire temperature deviation of the display panel can be reduced.