Buffer Member Sensor Hole Burr Prevention
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Solution Overview
Problem
Display devices with through holes for sensors often experience recognition errors due to burrs in the holes, which interfere with the proper functioning of camera and sensor systems.
Innovation Solution
A foldable display device design that includes a panel hole with a sensor device and a panel lower cover featuring a buffer member and adhesive members, where the distance between the adhesive members and the sensor device is strategically greater than the distance between the buffer member and the sensor device, preventing burrs from protruding and causing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If holes are defined in the display module through laser cutting, then the sensor device can be disposed in the holes, but burrs are generated in the holes causing recognition error in cameras or sensors
Solution Approach 1:
The patent introduces a buffer member as an intermediary component between the display module and the sensor device. This buffer member has a buffer hole that receives the sensor device, and its inner surface is positioned closer to the sensor device than the adhesive member's inner surface. The buffer member acts as a mediator that prevents burrs from the display module hole from contacting the sensor device, thus resolving the contradiction between easy hole formation and high manufacturing precision.
2Ease of manufacture
If adhesive members are used to attach components in the cover hole, then the panel lower cover can be assembled, but burrs from adhesive members may protrude and interfere with sensor devices
Solution Approach 1:
The buffer member serves as an intermediary structure that positions the sensor device closer to its own inner surface than to the adhesive member's inner surface. This spatial arrangement ensures that even if burrs protrude from the adhesive member, they cannot reach the sensor device, thus maintaining sensor reliability while allowing standard assembly processes with adhesive members.
Solution Approach 2:
The patent introduces a new spatial dimension by adding the buffer member with its own inner surface at a different position along the thickness direction. This creates a layered structure where the buffer member's inner surface is positioned between the adhesive member and the sensor device, effectively using dimensional arrangement to prevent burr interference.
Data Source
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AI summary
A display device includes a display module (11) in which a panel hole (PH) is defined, a sensor device (SED1) disposed in the panel hole, and a panel lower cover (600) which is disposed on a surface of the display module and in which a cover hole (CH1) is defined such that the sensor device is disposed in the cover hole, the panel lower cover including a buffer member (610) and a first adhesive member (710), which attaches the buffer member to the surface of the display module where a minimum distance between the first adhesive member and the sensor device is greater than a minimum distance between the buffer member and the sensor device.