Adhesive Protection Member for Display Device Manufacturing
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Solution Overview
Problem
Existing display devices face challenges in minimizing the exposure of adhesive layers, which can lead to foreign substances adhering to the adhesive or other structures during manufacturing, and may result in visual recognition of components under the adhesive layer.
Innovation Solution
Incorporating an adhesive protection member, such as a resin-coated layer, directly on the lower surface of the adhesive layer, and using a coated window with a resin material cured by laser irradiation, which aligns with the polarization unit and light shielding pattern, to prevent exposure and foreign substance adherence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the adhesive layer is exposed to attach the polarization unit to the display panel, then the polarization unit can be firmly attached, but foreign substances may adhere to the adhesive layer during manufacturing
Solution Approach 1:
An adhesive protection member is introduced as an intermediary element between the adhesive layer and the external environment. This protection member covers the adhesive layer during manufacturing processes, preventing foreign substances from adhering to it, while allowing the adhesive layer to perform its attachment function when needed
2Strength
If the adhesive layer is exposed for polarization unit attachment, then bonding can be achieved, but the components under the adhesive layer may become visually recognizable
Solution Approach 1:
The adhesive protection member serves as a visual barrier that covers the adhesive layer and underlying components, preventing them from being visually recognized. This intermediary layer maintains the aesthetic appearance while the adhesive layer performs its bonding function
3Strength
If a traditional lamination process is used to attach the window, then strong bonding is achieved, but the manufacturing process becomes complex and time-consuming
Solution Approach 1:
The adhesive protection member is selectively removed or opened at specific areas to expose the adhesive layer only where needed for final assembly. This extraction approach allows simplified manufacturing by eliminating unnecessary lamination steps while maintaining strong bonding at critical locations
4Object-affected harmful factors
If the adhesive layer is fully covered to prevent foreign substance adherence, then contamination is minimized, but the polarization unit cannot be properly attached
Solution Approach 1:
The adhesive protection member is designed with spatially varying properties - it covers the adhesive layer in areas where foreign substance prevention is needed, while leaving exposed or providing access in areas where attachment is required. This local differentiation allows simultaneous achievement of contamination prevention and proper attachment
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
The adhesive protection member effectively minimizes the exposure of the adhesive layer, preventing foreign substances from adhering and simplifying the manufacturing process by omitting the lamination step, thereby enhancing process reliability and reducing costs.
Implementation Method 1
a coated window directly disposed on the polarization unit and the light shielding pattern, wherein the coated window includes a resin material cured by laser irradiation
Data Source
AI summary
A display device including a display panel, a polarization unit that includes a first polarization part overlapping the display panel on a plane and a second polarization part extending from the first polarization part and having an outer surface protruding outward from an outer surface of the display panel, and covers the display panel on a plane, an adhesive layer that includes a first adhesive part disposed between the first polarization part and the display panel and a second adhesive part overlapping the second polarization part and is directly disposed on a lower surface of the polarization unit, an adhesive protection member directly disposed on a lower surface of the second adhesive part, a light shielding pattern directly disposed on the polarization unit, and a coated window directly disposed on the polarization unit and the light shielding pattern and including a resin material cured by laser irradiation.