Display Device Spacer for Light Guide Plate Heat Management
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Solution Overview
Problem
Existing display devices face issues with light intensity, durability, and color representation due to intensive light incidence on light conversion members, leading to denaturalization and heat transfer from light sources, which affects the lifespan and reliability of the devices.
Innovation Solution
A display device design featuring a light guide plate with a light source, a light conversion member integrated into the plate, and a spacer to ensure uniform light incidence and prevent heat transfer, enhancing brightness, durability, and reliability by spacing the light source from the light conversion member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the light source is placed close to the light conversion member, then the device size is reduced, but the light conversion member deteriorates due to intensive light incidence and heat transfer
Solution Approach 1:
A spacer is introduced as an intermediary component between the light source and the light conversion member. This spacer maintains a specific distance (e.g., 0.1-2.0 mm) to prevent direct contact, thereby reducing intensive light incidence and heat transfer to the light conversion member while still allowing compact device design.
Solution Approach 2:
The spacer extends in the thickness direction (z-axis) of the light guide plate, creating separation in the vertical dimension rather than increasing the horizontal footprint. This allows the device to maintain a compact overall size while providing sufficient spacing to protect the light conversion member.
2Reliability
If the light source is spaced apart from the light conversion member, then the light conversion member durability is improved, but the device complexity increases
Solution Approach 1:
The spacer serves multiple functions simultaneously: it maintains the required distance between the light source and light conversion member, provides mechanical support, facilitates assembly alignment, and can act as an adhesive substrate. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
3Reliability
If the light source is spaced apart from the light conversion member, then the light conversion member durability is improved, but the manufacturing cost increases
Solution Approach 1:
The spacer is integrated with the light guide plate as a single component, eliminating the need for separate assembly steps and reducing manufacturing complexity. This integration approach, combined with simple geometric designs, allows for cost-effective production through conventional manufacturing processes.
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 solution results in improved brightness, color representation, and extended lifespan by preventing intensive light and heat exposure, thereby enhancing the overall reliability and manufacturing simplicity of the display device.
Implementation Method 1
a light conversion member to convert a wavelength of light emitted from the light emitting diode
Data Source
AI summary
Disclosed is a display device. The display device includes a light source, a light guide part to receive a light emitted from the light source, a light conversion member between the light source and the light guide part, and a spacer between the light source and the light conversion member.