Flexible Printed Circuit Board Guide for Mobile Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal display units for mobile devices face issues with flexible printed circuit boards protruding outside the device, leading to damage from contact with internal chassis components due to variations in shape and height, causing defective displays.
Innovation Solution
A display design that includes a flexible printed circuit board attached to a display panel with a guide portion to adjust its height and position, preventing contact with internal chassis components by bending the board to match the device's inner shape, and a concave facing portion on the frame to secure electronic components, reducing the risk of damage from impact or vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flexible printed circuit board is made to extend outward through the openings of the front case and rear case, then the electrical connection is achieved, but the board contacts internal chassis components due to height variations causing damage
Solution Approach 1:
The patent introduces a guide portion that extends in the thickness direction (Z-axis) of the display panel, creating a three-dimensional guiding path. This guide portion pulls the flexible printed circuit board outward while controlling its height, allowing the board to extend through the opening without contacting the inner face of the chassis, thus resolving the contradiction between achieving electrical connection and avoiding contact damage.
2Ease of operation
If the flexible printed circuit board is pulled outward to extend through the opening, then the electrical connection is established, but variations in board shape and height occur causing damage
Solution Approach 1:
The guide portion acts as an intermediary structure between the display panel and the chassis. It provides a controlled path that mediates the extension of the flexible printed circuit board, ensuring consistent shape and height while allowing the board to reach the external connector, thus eliminating variations that would cause damage.
3Adaptability or versatility
If the flexible printed circuit board is made flexible to bend and extend, then the board can adapt to the device structure, but the board may deform and return to original shape causing component damage
Solution Approach 1:
The guide portion is pre-formed with a specific shape and size that matches the required extension path. It preliminarily determines the final shape and position of the flexible printed circuit board before the board is fully extended, preventing deformation and ensuring the board maintains its shape while adapting to the device structure.
Data Source
AI summary
A display includes: a display panel; a flexible printed circuit board that is attached to the display panel at a first height; and a frame that has the display panel disposed therein. The frame includes a guide portion that pulls the flexible printed circuit board to the outside of the frame, with the height of the flexible printed circuit board being varied from the first height to a second height by bending the flexible printed circuit board.