Window Jig Heating for Bubble-Free Lamination
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Solution Overview
Problem
Air bubbles generated between the display panel and the window during coupling can lead to reduced adhesive force and visual defects, as well as potential cracking due to uneven pressure distribution, which existing technologies have not adequately addressed.
Innovation Solution
A lamination apparatus incorporating a heating member, such as a cartridge heater or infrared lamp, is used to partially heat the window jig, reducing air bubbles and allowing effective coupling of the window and display panel even at low pressures by minimizing the need for high pressure application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high pressure is applied to couple the window and display panel, then coupling strength is improved, but air bubbles are generated and adhesive force decreases
Solution Approach 1:
The patent applies heating to change the temperature parameter of the window, making it more pliable and easier to couple with the display panel without requiring high pressure. This temperature parameter change reduces air bubble generation while achieving sufficient coupling strength
Solution Approach 2:
The window is heated in advance before coupling with the display panel. This preliminary heating action prepares the window material to be more compliant, allowing for bubble-free coupling at lower pressures
2Object-generated harmful factors
If low pressure is applied to couple the window and display panel, then air bubble generation is reduced, but coupling strength decreases
Solution Approach 1:
By changing the temperature parameter of the window through heating, the material becomes more pliable and easier to bond, compensating for the reduced pressure application and maintaining sufficient coupling strength without high pressure
3Ease of operation
If uniform pressure is applied across the window, then coupling is simplified, but air bubbles remain trapped and adhesive force decreases
Solution Approach 1:
The heating is applied locally to specific regions of the window (such as peripheral regions or specific areas), creating local temperature variations that facilitate bubble removal in those regions while maintaining overall coupling simplicity
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 heating member effectively reduces air bubble formation and ensures proper coupling of the window and display panel without increasing pressure, preventing cracks and maintaining display quality.
Implementation Method 1
a heating member in the window jig to partially heat the window jig, wherein the heating member may include a cartridge heater including an electrical resistance member
Implementation Method 2
A lamination apparatus incorporating a heating member, such as a cartridge heater or infrared lamp, is used to partially heat the window jig
Data Source
AI summary
A lamination apparatus includes: a window jig to support a window, and a heating member in the window jig to partially heat the window jig. The window jig includes a flat portion including a first sidewall area, a second sidewall area facing the first sidewall area in a first direction, a third sidewall area perpendicular to the first sidewall area, and a fourth sidewall area perpendicular to the first sidewall area and facing the third sidewall area in a second direction perpendicular to the first direction, a first protrusion portion protruding in a third direction perpendicular to the first and second directions on the first sidewall area, and a second protrusion portion protruding in the third direction on the second sidewall area.