Display Device Sealing via Cover Part and Buffer PCB
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Solution Overview
Problem
Existing display devices face issues with the introduction of external air and foreign substances, which can lead to discoloration and a decrease in brightness, particularly in industrial settings where sealing structures like cell seals increase costs and assembly time.
Innovation Solution
A display device design that incorporates a main frame fixing a touch screen panel and a display, a cover part that seals the rear side while allowing cables to be externally exposed, and a buffer PCB that seals openings and connects internal and external cables, thereby maintaining a sealed state without the need for sealing members like silicon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cell seal is formed between the touch screen panel and the display to suppress introduction of external air or foreign substances, then sealing performance is improved, but manufacturing cost increases and assembly time is extended
Solution Approach 1:
The patent removes the cell seal component from the structure and replaces it with a sealing groove formed directly on the rear surface of the touch screen panel. This extraction of the separate sealing component eliminates the need for additional assembly steps while maintaining sealing functionality through the integrated groove structure.
Solution Approach 2:
The sealing function is merged into the touch screen panel structure itself by forming a sealing groove on its rear surface. The adhesive layer is positioned within this groove to create the seal, combining the structural support function of the panel with the sealing function that previously required a separate cell seal component.
2Reliability
If a cell seal is formed between the touch screen panel and the display to suppress introduction of external air or foreign substances, then sealing performance is improved, but manufacturing cost increases
Solution Approach 1:
The patent eliminates the cell seal component and its associated manufacturing costs by integrating the sealing function directly into the touch screen panel through a formed groove structure. This removal of the separate component directly reduces material and manufacturing expenses.
Solution Approach 2:
The sealing function is combined with the touch screen panel structure, eliminating the need for separate sealing materials and reducing overall material costs. The adhesive layer within the groove provides sealing without requiring additional sealing components.
3Temperature
If vent hole is formed through the cover part to facilitate heat dissipation, then heat dissipation performance is improved, but external air and foreign substances can flow into the display causing discoloration and brightness decrease
Solution Approach 1:
The patent introduces a buffer PCB as an intermediary component that seals the opening where cables pass through the cover part. This buffer PCB acts as a mediator that allows cable penetration while preventing air and foreign substances from entering the display space, eliminating the need for vent holes and their associated problems.
Data Source
AI summary
The present disclosure relates to a display device which may comprise: a main frame for fixing a touchscreen panel and a display part; a cover part coupled to the rear side of the main frame so as to seal the rear side of the touchscreen panel and the display part, and enabling cable of the touchscreen panel and the display part to be exposed to the outside while maintaining the sealed state; and a controller coupled to a portion of the rear of the cover part and connected to the cable.