Diffuser Plate Supporter with Opaque Base for Light Leakage Prevention
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Solution Overview
Problem
In liquid crystal display devices with a direct-type backlight unit, the diffuser plate supporter interferes with light emission by being positioned between the light source and the diffuser plate, and using a transparent supporter leads to light leakage through the cover bottom's fastening holes, reducing light efficiency.
Innovation Solution
A diffuser plate supporter with a transparent support portion and an opaque base is designed, where the support portion is transparent to avoid light interference and the opaque base covers the fastening holes to prevent light leakage, and the connection area between the support and base is reinforced to prevent peeling during fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent diffuser plate supporter is used, then light interference is avoided, but light leakage occurs through fastening holes
Solution Approach 1:
The diffuser plate supporter is designed with different transparency properties in different regions: the support portion (first region) is transparent to avoid light interference, while the base portion (second region) is opaque to prevent light leakage through fastening holes. This local differentiation of optical properties resolves the contradiction between avoiding light interference and preventing light leakage.
2Reliability
If the diffuser plate supporter is positioned in the central region, then it supports the diffuser plate effectively, but it hinders light emission from reaching the diffuser plate
Solution Approach 1:
The support portion of the diffuser plate supporter is designed to be transparent, allowing light to pass through without interference. This transparency property enables the supporter to maintain its position in the central region for effective diffuser plate support while simultaneously allowing light emission to reach the diffuser plate unobstructed.
3Loss of energy
If the fastening portion is made opaque to prevent light leakage, then light efficiency is improved, but the connection area may peel during fastening
Solution Approach 1:
The connection portion is designed with increased area and extended structure that encloses the side surface of the base portion before fastening occurs. This preliminary structural arrangement prepares the connection interface to withstand rotational forces during the fastening process, preventing peeling while maintaining the opaque property for light leakage prevention.
Solution Approach 2:
The diffuser plate supporter combines different material properties in different regions: the support portion uses transparent material for light transmission, while the base and connection portions use opaque material for light leakage prevention and structural strength. This composite approach allows simultaneous achievement of light efficiency and connection strength.
Data Source
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AI summary
Embodiments disclosed herein relate to a diffuser plate supporter (150), a backlight unit, and an electronic device, in which a portion configured to support a diffuser plate (120) in a diffuser plate supporter (150) is made of a transparent material and a portion to be fastened to a cover bottom (130) is made of an opaque material, so that the diffuser plate supporter (150) can prevent light leakage from occurring on the back side of the cover bottom (130) without interfering with light reaching the diffuser plate (120). In addition, through a reinforcement design for the boundary portion between the portion made of the transparent material and the portion made of the opaque material, it is possible to prevent the portions made of different materials from being separated from each other during rotational fastening of the diffuser plate supporter (150) .