U-Shaped Lamp Fixation in LCD Backlight Assembly
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Solution Overview
Problem
The existing backlight assemblies for liquid crystal displays, particularly those using U-shaped lamps, face issues with stable fixation and vibration due to tolerance mismatches between the lamp and the inserting part, leading to potential sound-induced vibrations in TV applications.
Innovation Solution
A backlight assembly that includes a U-shaped lamp, a lamp housing, a side supporter with an inserting part, and a lamp support member comprising a tension bar and a boss to securely fix the lamp within the inserting part, preventing vibration and ensuring stable positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a U-shaped lamp is inserted directly into the inserting part of the side supporter, then the structure is simple, but the lamp is not stably fixed and vibrations occur due to tolerance mismatches
Solution Approach 1:
A lamp support member is introduced as an intermediary component between the U-shaped lamp and the inserting part of the side supporter. This mediator compensates for tolerance mismatches and ensures stable fixation without requiring complex adjustments to the existing structure.
Solution Approach 2:
The lamp support member is divided into distinct functional parts: a support body that interfaces with the inserting part and support protrusions that contact the lamp. This segmentation allows each part to be optimized for its specific function while maintaining overall structural simplicity.
2Reliability
If additional lamp holders are added to fix the lamp stably, then the fixation stability improves, but the device complexity and manufacturing cost increase
Solution Approach 1:
The lamp support member combines multiple functions into a single integrated component: it provides structural support, ensures stable fixation through protrusions, and eliminates the need for separate lamp holders. This merging reduces the total number of components while maintaining reliability.
Solution Approach 2:
The lamp support member serves multiple purposes: it acts as a structural element of the backlight assembly, a fixation mechanism for the lamp, and a tolerance compensation device. This multi-functionality eliminates the need for dedicated lamp holders, simplifying the overall structure.
Data Source
AI summary
A backlight assembly for a liquid crystal display includes: one U-shaped lamp; a lamp housing including the lamp; a side supporter fastened to the lamp housing and including an inserting part where the lamp is inserted; and a lamp support member that supports and fixes the lamp within the inserting part of the side supporter.