Support Substrate Corner Hole Pattern for Wrinkle-Free Display Bonding
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Solution Overview
Problem
The attachment of a support substrate to a display panel causes wrinkles or displacements due to applied pressure, leading to product defects and increased power consumption.
Innovation Solution
A display device with a support substrate featuring hole patterns in its corners that absorb pressure during bonding, preventing wrinkles and displacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a support substrate is attached to the display panel to reinforce rigidity, then the structural strength is improved, but pressure is applied to the corners causing wrinkles or displacements
Solution Approach 1:
The support substrate incorporates a hole pattern (array of holes) in its corner regions, transforming the solid substrate into a porous structure in those areas. This allows the corner regions to compress and absorb pressure during bonding without transferring excessive force to the display panel corners, thereby preventing wrinkles and displacements while maintaining overall structural rigidity
Solution Approach 2:
The hole pattern is applied selectively only to the corner regions (spline areas) of the support substrate, while the central and edge regions remain solid. This local modification allows the corners to be compliant and pressure-absorbing, while the rest of the substrate maintains its rigidity and structural support function
2Strength
If pressure is applied during bonding of support substrate and display panel, then the bonding strength is improved, but wrinkles or displacements occur in the substrate
Solution Approach 1:
The hole pattern converts the harmful effect of corner pressure (which causes wrinkles and displacements) into a beneficial pressure-absorbing mechanism. The holes allow controlled compression and deformation in the corner regions, dissipating excess pressure that would otherwise damage the substrate or display panel, while still permitting sufficient bonding pressure to be applied to the main bonding areas
Data Source
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AI summary
The present disclosure relates to a display device including a spline area in a respective corner. To realize this, the display device of the present disclosure may have a support substrate (145) bonded to a display panel (100) and having four spline areas (SPA1 to SPA4) respectively corresponding to four arc-shaped corners of the display panel (100), and the spline areas may have respective a hole patterns (PT) formed therein. Thereby, during the bonding of the support substrate (145) and the display panel (100), the bonding pressure can be absorbed by the hole patterns (PT) formed in the respective spline areas (SPA1-SPA4) of the support substrate (145), thus preventing the occurrence of wrinkle or displacement in the support substrate (145).