Segmented Display Panel Protection Layer for Window Attachment
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Solution Overview
Problem
Existing display apparatuses face challenges in maximizing the display area while minimizing the non-display area, particularly when attaching a display panel to a window cover, which can lead to defects and limitations in design flexibility.
Innovation Solution
A display apparatus design featuring a display panel with distinct areas for display, peripheral, bending, and pad regions, utilizing a lower protection layer with varying modulus materials, and a guide film to facilitate bending and attachment of a cover window, allowing for expanded display area and reduced non-display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the display panel is attached to the window cover using conventional methods, then the attachment process is simple, but defects occur during attachment and the non-display area cannot be minimized
Solution Approach 1:
The lower protection layer is divided into multiple portions with different materials and moduli: a first portion (including first and second bending protection layers) with lower modulus for bending areas, and a second portion with higher modulus for the pad area. This segmentation allows each portion to perform its specific function optimally - the lower modulus portions accommodate bending deformation while the higher modulus portion provides rigid support for attachment, thereby improving attachment quality without excessive structural complexity.
Solution Approach 2:
Different portions of the lower protection layer are assigned different material properties (modulus values) according to the local functional requirements. The first portion has a modulus of 10-100 MPa suitable for bending regions, while the second portion has a modulus of 100-1000 MPa suitable for the pad area. This local quality differentiation ensures that each region has the appropriate mechanical properties for its specific role, improving overall attachment precision.
2Area of moving object
If the display area is expanded to lateral surfaces and corners, then the display area increases, but the complexity of attaching the display panel to the window cover increases
Solution Approach 1:
The lower protection layer is segmented into multiple portions with different materials and moduli: a first portion (including first and second bending protection layers) with lower modulus for bending areas, and a second portion with higher modulus for the pad area. This segmentation allows each portion to perform its specific function optimally - the lower modulus portions accommodate bending deformation while the higher modulus portion provides rigid support for attachment, thereby improving attachment quality without excessive structural complexity.
Solution Approach 2:
Different portions of the lower protection layer are assigned different material properties (modulus values) according to the local functional requirements. The first portion has a modulus of 10-100 MPa suitable for bending regions, while the second portion has a modulus of 100-1000 MPa suitable for the pad area. This local quality differentiation ensures that each region has the appropriate mechanical properties for its specific role, improving overall attachment precision.
3Device complexity
If a uniform protection layer is used across the entire display panel, then the structure is simple, but it cannot accommodate both bending and rigid attachment requirements
Solution Approach 1:
The lower protection layer is divided into multiple portions with different materials and moduli: a first portion (including first and second bending protection layers) with lower modulus for bending areas, and a second portion with higher modulus for the pad area. This segmentation allows each portion to perform its specific function optimally - the lower modulus portions accommodate bending deformation while the higher modulus portion provides rigid support for attachment, thereby improving attachment quality without excessive structural complexity.
Solution Approach 2:
Different portions of the lower protection layer are assigned different material properties (modulus values) according to the local functional requirements. The first portion has a modulus of 10-100 MPa suitable for bending regions, while the second portion has a modulus of 100-1000 MPa suitable for the pad area. This local quality differentiation ensures that each region has the appropriate mechanical properties for its specific role, improving overall attachment precision.
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 solution enables the display apparatus to effectively increase the display area by overlapping the display panel's bending area with the pad area, reducing non-display area, and enhancing design aesthetics while minimizing defects during attachment.
Implementation Method 1
A modulus of the first portion of the lower protection layer may be less than a modulus of the second portion
Data Source
AI summary
A display apparatus includes: a display panel including a display area, a peripheral area, a bending area, and a pad area; and a lower protection layer arranged on a rear surface of the display panel and including a first portion and a second portion, where the first portion corresponds to the display area and the peripheral area, and the second portion corresponds to the pad area. The first portion of the lower protection layer includes a material different from a material of the second portion. The display area is configured to display an image, the peripheral area is outside the display area and does not display an image, the bending area is on one side of the peripheral area, and the pad area is spaced apart from the peripheral area with the bending area therebetween.