Display Panel Narrow Bezel via Post-Lamination Cutting
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Solution Overview
Problem
Existing display panels have wide bezels due to the need for a reserved expanding size of the cover film during manufacturing, which is caused by process errors and tolerances.
Innovation Solution
A method for manufacturing a display panel that involves laminating a polarizer to the light exit surface of a display module and then laminating a cover film to the polarizer. Integrated shape cutting is performed on the display module with the polarizer and cover film laminated, allowing the cover film to be flush with the display module edges except at the bonding side.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a reserved expanding size is left for the cover film during manufacturing, then manufacturing process errors and tolerances can be accommodated, but the bezel width increases and screen-to-body ratio decreases
Solution Approach 1:
The patent applies preliminary action by performing the shape cutting process after the cover film is laminated onto the polarizer, rather than cutting before lamination. This sequence allows the cover film to be properly positioned and bonded first, then cut to the final size, eliminating the need for reserved expanding size and achieving flush edges without compromising manufacturing tolerance accommodation.
Solution Approach 2:
The patent changes the manufacturing parameter sequence by reversing the traditional order of operations: instead of cutting the display module before laminating the cover film, the shape cutting is performed after lamination. This parameter change in process sequence eliminates the need for reserved expanding size while maintaining manufacturing precision.
2Ease of manufacture
If the cover film is laminated before shape cutting, then the cover film can be properly positioned and bonded, but the bezel width increases due to reserved expanding size
Solution Approach 1:
The patent applies preliminary action by performing the shape cutting process after the cover film is laminated onto the polarizer, rather than cutting before lamination. This sequence allows the cover film to be properly positioned and bonded first, then cut to the final size, eliminating the need for reserved expanding size and achieving flush edges without compromising manufacturing tolerance accommodation.
Solution Approach 2:
The patent changes the manufacturing parameter sequence by reversing the traditional order of operations: instead of cutting the display module before laminating the cover film, the shape cutting is performed after lamination. This parameter change in process sequence eliminates the need for reserved expanding size while maintaining manufacturing 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
This approach eliminates the need for a reserved expanding size of the cover film, resulting in a display panel with a narrower bezel and improved screen-to-body ratio.
Implementation Method 1
a polarizer, on a light exit surface of the display module
Implementation Method 2
a cover film, on one surface of the polarizer away from the display module
Data Source
AI summary
A display panel, a display device, and a method for manufacturing the display panel, mitigating the problem that display panels in the prior art still have wide bezels. The display panel comprises: a display module (1); a polarizer (2) located on a light exit surface of the display module (1), at least one outer edge of the polarizer (2) being flush with an outer edge of the display module (1); and a cover plate (3) located on the surface of the polarizer (2) far away from the display module (1), the outer edges of the cover plate (3) except a binding side being flush with the outer edges of the display module (1) except the binding side.