Flat Panel Display Pad Electrode Wiring for Static and Short Circuit Protection
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Solution Overview
Problem
During the manufacturing of flat panel display apparatuses, static electricity can damage the devices, and misalignment during the coupling of flexible printed circuit boards to pad electrodes can lead to short circuits between channels.
Innovation Solution
The solution involves connecting pad electrodes on the mother glass to conductive lines to prevent static electricity and using a specific configuration of conductive line wiring, including a third conductive line that is insulated from adjacent lines, to prevent short circuits even during misalignment and scribing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If pad electrodes are interconnected on mother glass to discharge static electricity, then static electricity damage is prevented, but short circuit can occur between neighboring pad electrodes due to misalignment during flexible circuit board coupling
Solution Approach 1:
The conductive line wiring is divided into first and second conductive lines that are spatially separated and insulated from each other. The first conductive line connects pad electrodes of first and second display panels, while the second conductive line connects pad electrodes of third and fourth display panels. This segmentation prevents short circuits between neighboring pad electrodes even when misalignment occurs during flexible circuit board coupling.
Solution Approach 2:
An insulating layer is introduced as an intermediary between the first and second conductive lines. This insulating layer prevents direct contact and potential short circuits between the conductive lines while still allowing both lines to be present on the mother glass for static electricity discharge functionality.
2Object-affected harmful factors
If constant voltage is generated on metal wiring connected to pad electrode to prevent static electricity, then static electricity discharge is prevented, but manufacturing complexity increases
Solution Approach 1:
The patent combines the static electricity discharge function with the existing pad electrode interconnection structure on the mother glass. By using the same conductive lines for both signal transmission and static electricity discharge, additional separate wiring structures are avoided, thereby reducing manufacturing complexity while maintaining the static electricity prevention capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively prevents damage from static electricity and short circuits, ensuring accurate signal transfer and reliable operation of the display panels despite misalignment and scribing errors.
Implementation Method 1
a first conductive line connecting the pad electrodes of the first and second display panels to each other, and a second conductive line connecting the pad electrodes of the third and fourth display panels to each other
Data Source
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AI summary
A flat panel display apparatus and a method of manufacturing the same are disclosed. In one embodiment, the flat panel display apparatus includes i) a flat panel having four peripheral sides and including a plurality of display elements, ii) a first plurality of pad electrodes (131,132) formed at one or more of the four sides of the flat panel, wherein the first plurality of pad electrodes are electrically connected to at least one of the plurality of display elements, iii) a first plurality of conductive lines (142,142) extending from the first plurality of pad electrodes, respectively, wherein the first plurality of conductive lines are electrically insulated from each other and iv) at least one intermediate electrode formed between two adjacent ones of the first plurality of conductive lines, wherein the at least one intermediate electrode (146-148) is electrically insulated from the two adjacent conductive lines.