Display Panel Sealing with Adhesive Protrusion and Release Paper
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Solution Overview
Problem
Conventional display apparatuses face challenges in effectively sealing the gap between the display panel and the backlight unit to prevent dust entry, particularly in terms of adhesive configuration and load application, which affects the thickness and cost of the device.
Innovation Solution
The display apparatus employs a configuration with a housing, display panel, cover panel, first adhesive, housed member, second adhesive, and protrusion, where the second adhesive seals the rim portion of the display panel and housed member together, and the protrusion on the backlight unit or display panel controls the adhesive spread, ensuring proper sealing without excessive load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If adhesive is applied to glue display panel and backlight unit together, then dust prevention is improved, but adhesive may spread beyond intended areas
Solution Approach 1:
A release paper is introduced as an intermediary carrier for the adhesive. The adhesive is applied on the release paper rather than directly on the display panel or backlight unit, allowing precise positioning and controlled transfer. The release paper prevents adhesive spread beyond intended areas while maintaining effective sealing for dust prevention.
Solution Approach 2:
The adhesive is prepared and positioned on the release paper in advance before the actual assembly. This preliminary action allows for precise placement and prevents premature spreading, ensuring the adhesive remains in the intended area until the moment of bonding.
2Object-affected harmful factors
If adhesive is applied to seal the gap between display panel and backlight unit, then dust prevention is improved, but device thickness increases
Solution Approach 1:
The adhesive is applied as a thin layer on the release paper, which then transfers to form a thin sealing film between the display panel and backlight unit. This thin film configuration provides effective dust sealing while minimizing the increase in device thickness.
3Strength
If adhesive is applied to glue housing and cover panel together, then structural bonding is improved, but adhesive spread control becomes difficult
Solution Approach 1:
The release paper serves as a mediator that allows the adhesive to be precisely positioned and controlled during the bonding process between housing and cover panel. The adhesive is applied to the release paper, which then transfers to the target surface, preventing uncontrolled spreading while maintaining strong bonding.
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 configuration enhances dust prevention, allows for a thinner design, reduces manufacturing time, and lowers costs by using a single adhesive type for both sealing and positioning, while preventing adhesive spread beyond intended areas.
Implementation Method 1
The first adhesive glues the housing and the cover panel together. The second adhesive glues a rim portion of the back surface of the display panel and the housed member together.
Data Source
AI summary
A display apparatus includes: a housing, a display panel, a cover panel, a first adhesive, the housed member, the second adhesive, and a protrusion. The display panel is arranged in a position corresponding to an opening of the housing, and has a front surface and a back surface. The cover panel covers the front surface. The first adhesive glues the housing and the cover panel together. The housed member is located adjacent to the back surface of the display panel and is housed in the housing. The second adhesive glues a rim portion of the back surface of the display panel and the housed member together. The protrusion is located on a portion of one of the housed member and the display panel, and protrudes toward the other of the housed member and the display panel. The portion corresponds to a location of the second adhesive on the other.