Flexible Printed Circuit Film Cutting Mark for Display Panel
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Solution Overview
Problem
Conventional LCD devices often experience malfunctions due to improper connections between the flexible printed circuit film and the electrode terminals, resulting in open connections and increased defect rates, which can be attributed to inadequate cutting of the flexible printed circuit film during manufacturing.
Innovation Solution
A mother plate for flexible printed circuit film is designed with a cutting mark adjacent to the wiring, allowing for precise cutting and alignment, ensuring a gapless connection with the display panel electrode, and the flexible printed circuit film includes a cutting mark and align mark to facilitate secure electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flexible printed circuit film is cut during manufacturing, then the film can be connected to the display panel electrode, but improper cutting causes gaps and open connections leading to malfunctions
Solution Approach 1:
The cutting mark is formed on the flexible printed circuit film before the cutting process. This preliminary marking guides the cutting operation to ensure precise alignment with the display panel electrode, preventing gaps and open connections that would compromise reliability
Solution Approach 2:
The patent replaces manual or imprecise mechanical cutting methods with a systematic approach using formed cutting marks that guide automated or precision cutting processes, ensuring consistent and accurate cutting positions
2Manufacturing precision
If the cutting mark is formed adjacent to the wiring, then precise cutting and alignment are achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The cutting mark is segmented into specific patterns (such as linear marks or notches) positioned adjacent to the wiring. This segmentation provides clear visual or mechanical guides for cutting without requiring complex manufacturing equipment or processes
Solution Approach 2:
The cutting mark serves as an intermediary element between the wiring and the cutting tool. It provides a reference that simplifies the cutting process by eliminating the need for complex measurement or alignment systems
Data Source
AI summary
The present invention relates to a mother plate for a flexible printed circuit film with a cutting mark and a display device provided with a flexible printed circuit film cut from the same. The display device includes a display panel for a panel unit displaying an image, a display panel electrode formed on the display panel, and a flexible printed circuit film electrically connected to a terminal of the display panel electrode. The flexible printed circuit film includes a wiring electrically connected to the display panel electrode, and a cutting mark having a cutting portion formed to be adjacent to the wiring in at least one edge of the flexible printed circuit film.