Foldable Display Window Structure for Static Electricity Blocking
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Solution Overview
Problem
Foldable electronic devices face issues with static electricity causing short-circuits due to uncontrolled paths of static electricity flow, which affect electrical and folding characteristics.
Innovation Solution
The design includes a protrusion portion in the window protective layer that overlaps a separation area defined by the optical film and bending cover layer, blocking the path of static electricity with a low-resistance line, thereby preventing short-circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a foldable electronic device is designed with flexible display components, then the device achieves foldable functionality and compact form factor, but static electricity can flow uncontrolled causing short-circuits
Solution Approach 1:
The patent introduces a protrusion portion as an intermediary element that extends from the window protective layer into the separation area. This protrusion portion acts as a mediator to block the path of static electricity, preventing it from reaching the data line and causing short-circuits, while allowing the foldable structure to maintain its flexibility and functionality.
Solution Approach 2:
The patent extracts the static electricity blocking function from the main window protective layer by creating a separate protrusion portion. This extracted element specifically targets the separation area where static electricity accumulates, removing the harmful effect without compromising the overall foldable structure.
2Ease of operation
If the window protective layer is made thin and flexible to enable folding, then the device achieves better folding characteristics, but it becomes more susceptible to static electricity damage
Solution Approach 1:
The patent applies local quality by creating a protrusion portion with specific properties (extended thickness or conductive material) only in the separation area where static electricity accumulation is most problematic. The rest of the window protective layer remains thin and flexible to maintain ease of folding, thus resolving the contradiction between flexibility and static electricity resistance.
3Manufacturing precision
If data lines are placed closer to the edge of the display module, then the device achieves higher pixel density and better display quality, but static electricity can more easily cause short-circuits
Solution Approach 1:
The protrusion portion serves as a protective intermediary between the edge-proximity data lines and the external environment. By extending into the separation area, it creates a physical and electrical barrier that blocks static electricity from reaching the data lines, allowing the lines to be positioned closer to the edge for higher pixel density without increased short-circuit risk.
Data Source
AI summary
An electronic device includes a display module including a display panel including a first area in which a pixel is disposed, a second area adjacent to the first area and bent with respect to an imaginary axis, a data line connected to the pixel, and a first line insulated from the pixel, an optical film, and a bending cover layer and a window module including a glass substrate and a window protective layer including a cover portion disposed on the glass substrate and a protrusion portion protruding from the cover portion. An end of the optical film and an end of the bending cover layer, which faces the end of the optical film, defines a separation area, the data line and the first line overlap the separation area when viewed in a plane, and the protrusion portion overlaps the first line in the separation area when viewed in a plane.