Display Device Direct Sealing for Potting Compound Protection
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Solution Overview
Problem
The existing method of forming a sealed cavity for a display device involves a complex application of a curing sealant, which risks inadequate sealing if applied incorrectly, allowing potting compound to penetrate and compromise the integrity of the cavity.
Innovation Solution
A direct sealing abutment between the carrier and cover forms the sealed cavity, eliminating the need for additional sealant by using a peripheral abutment region on the cover and carrier, with a press fit ensuring a secure seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a curing sealant is applied to form a sealed cavity, then the cavity can be sealed, but the manufacturing process becomes complex and requires additional application apparatus and curing time
Solution Approach 1:
The patent extracts and eliminates the sealant material from the sealing system, replacing it with a mechanical sealing solution. The carrier plate includes a sealing profile that directly engages with the cover to form a seal without requiring additional sealant material, thereby simplifying the manufacturing process while maintaining sealing reliability.
Solution Approach 2:
The carrier plate structure itself provides the sealing function through its integrated sealing profile. The sealing profile is designed to automatically engage with the cover during assembly, creating a self-sealing mechanism that does not require external sealant application or curing processes.
2Reliability
If sealant is applied to seal the cavity, then sealing is achieved, but the risk of inadequate sealing and potting compound penetration increases
Solution Approach 1:
The patent removes the vulnerable sealant layer that could fail to seal properly. Instead, it employs a mechanical sealing profile on the carrier plate that provides a positive seal against the cover, eliminating the risk of sealant failure and potting compound penetration through inadequate sealing.
Solution Approach 2:
The sealing profile on the carrier plate features a curved or angled surface that creates a mechanical interlock with the cover. This geometric design ensures that the seal is formed through the shape and engagement of the components themselves, providing a more reliable seal that prevents potting compound penetration.
3Reliability
If sealant application is used to form the cavity, then the cavity can be sealed, but separate working steps and application apparatus are required
Solution Approach 1:
The patent merges the sealing function with the carrier plate structure itself. The sealing profile is an integral part of the carrier plate, combining the structural and sealing functions into a single component. This eliminates the need for separate sealant application steps and dedicated application apparatus, thereby improving manufacturing efficiency.
Solution Approach 2:
The carrier plate structure itself provides the sealing function through its integrated sealing profile. The sealing profile is designed to automatically engage with the cover during assembly, creating a self-sealing mechanism that does not require external sealant application or curing processes.
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 method simplifies the manufacturing process by automating the sealing, ensuring a reliable and complete seal without additional sealant, while allowing the display to be visible through a transparent cover and preventing potting compound penetration.
Implementation Method 1
the carrier abuts the cover directly in sealing abutment
Data Source
AI summary
A display device contains a carrier plate with one or more electronic components arranged thereon, a carrier for a display, a display arranged on the carrier, and a cover. The cover is transparent at least in a region covering the display. There is formed beneath the cover a sealed cavity in which the display is accommodated. The carrier abuts the cover directly in sealing abutment, and the sealed cavity, in which the display is arranged, is formed between the cover and the carrier. The space that is present outside the cavity between the carrier plate and the cover is filled with a potting compound.