Flexible Board Holder Rib for LCD Frame Support
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Solution Overview
Problem
In liquid crystal display devices without a cabinet, the holder for the flexible board lacks adequate support, leading to potential bending due to insufficient strength, which complicates manufacturing and assembly.
Innovation Solution
The display device incorporates a holding member with a second holding section that extends along the side wall of the frame, functioning as a rib to increase strength, and a signal transmission substrate is positioned between the side wall and this holding section to prevent tilting, along with configurations that prevent interference with the driving part and enhance light efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If the holder is supported only by the frame member without a cabinet, then production cost decreases and device thickness reduces, but the holder lacks adequate support and may bend
Solution Approach 1:
The holding member extends in the thickness direction of the display device, utilizing the space between the frame member and the rear surface to provide additional support. This dimensional extension creates a rib structure that reinforces the holder without adding external components.
Solution Approach 2:
The holding member is integrated with the frame member through attachment, merging the structural support functions. The holding member serves both to hold the flexible board and to provide reinforcement against bending, eliminating the need for separate support structures.
2Reliability
If the holding member is made stronger to prevent bending, then holder reliability improves, but device complexity increases
Solution Approach 1:
Instead of increasing the area or adding complex multi-component structures, the solution extends the holding member in the thickness direction to create a rib. This simple dimensional change provides structural reinforcement without complicating the overall design.
Solution Approach 2:
The holding member is designed with varying thickness to create local reinforcement at critical areas. The rib structure provides enhanced strength where needed while maintaining simplicity in other regions, avoiding unnecessary complexity throughout the entire component.
3Ease of manufacture
If the signal transmission substrate is positioned between the side wall and holding section, then manufacturing workability improves, but space utilization decreases
Solution Approach 1:
The signal transmission substrate is pre-positioned between the side wall and the holding section during assembly. This preliminary positioning ensures proper alignment and prevents tilting of the substrate, facilitating easier manufacturing while utilizing available space efficiently.
Data Source
AI summary
A liquid crystal display device includes: LEDs; a liquid crystal panel; a flexible board connected to the liquid crystal panel; a driver mounted on the flexible board; a frame that has a frame section that has a frame-like shape and that holds the liquid crystal panel, and a side wall that extends from the edge of the frame section to the side opposite of a display surface side; and a source driver holder that holds the flexible board to the frame, and that has a first holding section that is disposed along the frame section and of which a portion is attached to the frame section and a second holding section that extends from the edge of the first holding section to the side opposite of the side of the display surface side.