Mold Frame Protrusion Absorbs LCD Impact Forces
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Solution Overview
Problem
Liquid crystal display devices are vulnerable to external impacts, which can damage the printed circuit board and driver IC due to the direct transfer of force, as the existing mold frames do not effectively distribute or absorb such impacts.
Innovation Solution
A mold frame design that includes a supporting part covering the backlight module's sides, an opening part on one side with a protruding part of equal height, and a penetrating part on the printed circuit board to allow the protruding part to absorb external impacts, thereby protecting the printed circuit board and driver IC.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional mold frame is used, then the structure is simple, but external impacts are directly transferred to the printed circuit board and driver IC causing damage
Solution Approach 1:
The mold frame is divided into multiple functional parts: a supporting part that provides structural support, an opening part that creates space, and a protruding part that extends toward the printed circuit board. This segmentation allows each part to perform its specific function in absorbing and distributing impact forces, thereby protecting the printed circuit board and driver IC while maintaining a manageable structural complexity
Solution Approach 2:
The protruding part acts as an intermediary element between the external impact and the printed circuit board. It extends from the opening part toward the printed circuit board, intercepting impact forces before they reach the vulnerable components. This intermediary structure redistributes the impact forces across a larger area, preventing direct transmission to the driver IC and printed circuit board
2Reliability
If the mold frame covers all sides, then protection is maximized, but the printed circuit board cannot be properly connected
Solution Approach 1:
The mold frame applies local quality by providing full coverage protection on three sides through the supporting part, while creating a localized opening on one side. This opening part allows the printed circuit board to be connected, while the protruding part within the opening provides targeted protection. This localized approach ensures both protection and ease of operation without compromising either function
Data Source
AI summary
A mold frame for a liquid crystal display is disclosed. In one embodiment, the mold frame includes a plurality of supporting portions formed in a plurality of sides of the mold frame, respectively, and configured to receive and support a backlight module. The mold frame further includes an opening portion formed in another different side of the mold frame, wherein the opening portion is connected to at least two of the supporting portions; and a protruding portion extending from the opening portion.