Display Assembly Direct Sealing for Leak-Resistant Potting
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Solution Overview
Problem
The existing display devices require a complex and error-prone application of a separate sealant to form a sealed cavity, which can lead to incomplete sealing and leakage if applied incorrectly.
Innovation Solution
A direct sealing system is implemented between the carrier and the cover, eliminating the need for additional sealants by using a circumferential contact area and a sealing section that creates a sealed cavity upon assembly, facilitated by a positive press fit and beveled surfaces for easy alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate sealant is applied to form a sealed cavity, then the cavity can be sealed, but the production process becomes complex and error-prone
Solution Approach 1:
The sealing function is merged with the carrier plate structure by integrating a sealing bead directly onto the carrier plate. This eliminates the need for separate sealant application steps and external sealing components, thereby simplifying the production process while maintaining reliable sealing of the cavity.
Solution Approach 2:
The carrier plate with integrated sealing bead performs the sealing function automatically during assembly. The sealing bead self-aligns with the cover groove to form the sealed cavity without requiring additional sealing operations or separate sealing components, enabling self-service sealing during the manufacturing process.
2Reliability
If a sealant bead is applied manually, then sealing can be achieved, but the application process is complex and requires additional equipment
Solution Approach 1:
The sealing function is merged with the carrier plate structure by integrating a sealing bead directly onto the carrier plate. This eliminates the need for separate sealant application steps and external sealing components, thereby simplifying the production process while maintaining reliable sealing of the cavity.
3Reliability
If sealant is used to seal the cavity, then leakage can be prevented, but the sealing process becomes time-consuming
Solution Approach 1:
The carrier plate with integrated sealing bead performs the sealing function automatically during assembly. The sealing bead self-aligns with the cover groove to form the sealed cavity without requiring additional sealing operations or separate sealing components, enabling self-service sealing during the manufacturing process.
Solution Approach 2:
The sealing bead is pre-integrated onto the carrier plate during its manufacturing process. This preliminary action ensures that the sealing structure is already in place before final assembly, eliminating the need for time-consuming sealant application steps during production and thereby increasing manufacturing speed.
4Reliability
If a separate sealing system is used, then the cavity can be sealed reliably, but the overall device structure becomes more complex
Solution Approach 1:
The sealing function is merged with the carrier plate structure by integrating a sealing bead directly onto the carrier plate. This eliminates the need for separate sealing components and reduces the overall device structure complexity while maintaining reliable cavity sealing.
Data Source
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AI summary
A display device comprising a carrier plate (2) with one or more electronic components (3) arranged thereon, a carrier (4) for a display (13), a display (13) arranged on the carrier (4), and a cover (16) which is transparent at least in an area (18) overlapping the display (13), wherein a sealed cavity (23) in which the display (13) is received is formed beneath the cover (16), wherein the carrier (4) bears directly against the cover (16) in a sealing system, and the sealed cavity (23) in which the display (13) is arranged is formed between the cover (16) and the carrier (4), wherein the space (27) outside the cavity (23) between the carrier plate (2) and the cover (16) is filled with a potting compound (26).