Display Device Heat Transfer Part for Wavelength Conversion Member Thermal Management
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Solution Overview
Problem
Display devices with backlight units face reliability and durability issues due to heat degradation of wavelength conversion members, which affects the performance and color reproduction of liquid crystal displays.
Innovation Solution
Incorporating a heat transfer part between the light source and wavelength conversion member, and a heat dissipation part to efficiently dissipate heat generated from both components, utilizing inclined surfaces on the wavelength conversion member to enhance heat transfer and dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light source and wavelength conversion member are used in a display device, then color reproduction and image display are improved, but heat degradation of the wavelength conversion member reduces reliability and durability
Solution Approach 1:
A heat transfer member is introduced as an intermediary between the light source and wavelength conversion member. This mediator component transfers heat away from the wavelength conversion member, preventing heat accumulation and degradation while maintaining the optical functionality of the display device.
Solution Approach 2:
Heat is extracted from the wavelength conversion member through the heat transfer member and heat dissipation structure. By separating the heat management function from the optical conversion function, the wavelength conversion member is protected from thermal damage while continuing to perform its color conversion role.
2Reliability
If heat transfer part and heat dissipation part are added to the display device, then reliability and durability are improved, but device complexity increases
Solution Approach 1:
The heat transfer member serves multiple functions: it acts as a thermal management component to transfer heat away from the wavelength conversion member, and simultaneously serves as part of the optical path structure in the display device. This multi-functionality reduces the need for separate dedicated heat dissipation components.
Solution Approach 2:
The heat transfer member is integrated with existing structural elements of the display device rather than being added as a completely separate component. By merging heat management functionality with existing structural components, the overall device complexity is minimized while still achieving effective thermal management.
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 prevents heat-induced degradation of wavelength conversion members, improving the reliability and durability of the display device while maintaining color accuracy by reducing temperature and performance degradation.
Implementation Method 1
the heat transfer part may transfer the heat, which is dissipated from the light source to the wavelength conversion member, to the heat dissipation part
Implementation Method 2
an optical member that converts the wavelength of the light generated from the light source such that white light can be incident into the light guide plate or the display panel can be employed in the display device. In particular, quantum dots may be used to convert the wavelength of the light.
Data Source
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AI summary
Disclosed is a display device. The display device includes a light source; a wavelength conversion member adjacent to the light source; and a display panel to which light output from the wavelength conversion member is incident, wherein the wavelength conversion member includes an inclined surface which is inclined with respect to a surface perpendicular to an optical axis of the light source.The display device further comprises a heat transfer part which encloses the wavelength conversion member and which is connected to a heat dissipation part.