Foldable Display Window Layout for Static Discharge Isolation
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Solution Overview
Problem
Foldable electronic devices face issues with static electricity flowing in from the outside, leading to potential short-circuits and affecting electrical and folding characteristics.
Innovation Solution
The design includes a window module with a protrusion portion overlapping a separation area defined by an optical film and a bending cover layer, blocking the path of static electricity through lines with low resistance, and using a second line with higher resistance to mitigate static electricity effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a touch-sensitive display is used to enable touch input functionality, then user interaction capability is improved, but the display becomes susceptible to spurious inputs from droplets or other contaminants
Solution Approach 1:
A coating layer is applied to the touch-sensitive display surface to act as an intermediary between external contaminants (droplets) and the display. This coating selectively allows touch inputs to pass through while blocking or dissipating the electrical charge from spurious inputs caused by contaminants, thereby maintaining both touch functionality and input accuracy.
2Reliability
If the display surface is made more resistant to spurious inputs, then input accuracy is improved, but touch sensitivity may be reduced
Solution Approach 1:
The coating on the touch-sensitive display exhibits different properties for different types of inputs: it is transparent and conductive enough to allow genuine touch inputs to be detected, while simultaneously being resistant to spurious inputs from droplets. This local differentiation in response to different input types resolves the contradiction between sensitivity and accuracy.
3Ease of manufacture
If conventional cleaning methods are used on the display, then maintenance is simple, but spurious inputs from cleaning agents or residues may occur
Solution Approach 1:
The coating is designed to be resistant to common cleaning agents, transforming the potential harm of cleaning residues into a benefit where the coating protects the display during cleaning. The coating's chemical resistance allows conventional cleaning methods to be used without leaving residues that would cause spurious inputs, thus maintaining both cleaning simplicity and input accuracy.
Data Source
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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 pixe I, 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.