Curved Substrate Mounting Member for Display Light Leakage Prevention
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Solution Overview
Problem
Existing display devices and television sets with backlight sources suffer from light leakage through corner portions due to clearances in the bezel, frame, and chassis, which reduces their efficiency and increases the risk of damage from external contact.
Innovation Solution
A display device and television device design featuring a substrate mounting member with corner portions where adjacent side surfaces are bonded without clearances, and a cover member that partially covers the rear surface of the substrate mounting member, creating a round corner shape to inhibit light leakage and enhance mechanical strength, while also serving as a heat radiation and rear housing component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If clearances are formed on corner portions of the bezel, frame and chassis, then assembly is easier and manufacturing is simpler, but light from the backlight source leaks outward through these clearances
Solution Approach 1:
The corner portions of the substrate mounting member are formed with a curved outer peripheral surface instead of sharp angles. This curvature allows adjacent side surface portions to be bonded without clearances, preventing light leakage while maintaining structural integrity and ease of assembly.
2Ease of manufacture
If clearances are formed on corner portions of the bezel, frame and chassis, then manufacturing is simpler, but the corner portions are more susceptible to damage from external contact
Solution Approach 1:
The corner portions are designed with a curved outer peripheral surface that eliminates sharp angles. This curvature makes the corner portions more resistant to damage from external contact while maintaining manufacturing simplicity through continuous surface formation.
3Object-generated harmful factors
If the substrate mounting member covers the backlight source completely, then light leakage is prevented, but heat dissipation from the backlight source is reduced
Solution Approach 1:
The substrate mounting member selectively covers only the corner portions and essential areas to prevent light leakage, while leaving the peripheral regions exposed. This localized coverage approach allows heat to dissipate from the backlight source through exposed areas while still preventing light leakage from critical corners.
Data Source
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AI summary
This display device (100) includes a display panel (2) including a substrate mounting member (5) covering a backlight source (4b) and a cover member (6) arranged to partially cover the rear surface of the substrate mounting member and to expose a region in the periphery of at least an outer peripheral portion (51) of the rear surface of the substrate mounting member. The substrate mounting member has a side surface portion (51a, 51b, 51c, 51d), while a corner portion (51e, 51f, 51g, 51h) of the outer peripheral portion formed by the side surface portion of the substrate mounting member has such a shape that adjacent ones of the side surface portion are bonded to each other without a clearance.