Flexible Display Cover Member With Bend-Resistant Glass-Resin Bonding
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Solution Overview
Problem
Existing cover members with UV curable resin between glasses require time-consuming resin filling and curing steps, and are prone to breakage and peeling due to repeated bending.
Innovation Solution
A cover member comprising a first glass, a thermoplastic resin or elastomer, and a second resin with a loss modulus of 106 Pa or more at 35°C, bonded using a curable resin to prevent breakage and peeling during bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UV curable resin is provided between glasses to impart flexibility, then the cover member can be bent, but the production process becomes time-consuming due to resin filling and curing steps
Solution Approach 1:
The patent changes the material parameter from UV curable resin to thermoplastic resin, which eliminates the curing step and simplifies the production process while maintaining the flexibility function through the thermoplastic material's inherent properties
Solution Approach 2:
The patent extracts the UV curing step from the production process by replacing UV curable resin with thermoplastic resin, removing the time-consuming curing operation while preserving the essential flexibility function
2Strength
If UV curable resin is used to bond glass and resin, then bonding is achieved, but breakage and peeling occur due to repeated bending
Solution Approach 1:
The patent changes the material parameter from UV curable resin to thermoplastic resin, which has different mechanical properties that provide better flexibility and resistance to repeated bending, thereby improving reliability while maintaining bonding strength
Solution Approach 2:
The patent uses a composite structure combining glass, thermoplastic resin, and adhesive resin, where each material is selected for its specific properties to collectively achieve both bonding strength and durability under bending conditions
3Adaptability or versatility
If entire region is filled with UV curable resin to impart flexibility, then flexibility is achieved, but the production process becomes complex with filling and curing steps
Solution Approach 1:
The patent changes the material parameter from UV curable resin to thermoplastic resin, which can be processed through simpler heating and molding operations, thereby reducing production process complexity while maintaining the flexibility function
Solution Approach 2:
The patent extracts the UV curing operation from the production process by using thermoplastic resin instead, eliminating the need for specialized curing equipment and procedures, thus simplifying the overall production process
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
Prevents breakage and peeling of bonded portions by ensuring durability through a simplified production process and improved bonding between glass and resin layers.
Implementation Method 1
a second resin that is provided between a side surface of the first glass and a first side surface of the first resin and configured to bond the first glass and the first resin
Implementation Method 2
a first resin that is a thermoplastic resin or a thermoplastic elastomer
Data Source
AI summary
The present invention relates to a cover member for a display, including: a first glass; a first resin that is a thermoplastic resin or a thermoplastic elastomer; and a second resin that is provided between a side surface of the first glass and a first side surface of the first resin and configured to bond the first glass and the first resin, in which the second resin is a resin different from the first resin and has a loss modulus G″ of 106 Pa or more at 35° C.