Curved Display Disassembly Using Nitrogen Gas Chamber and Insulation Pads
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Solution Overview
Problem
The existing methods for disassembling curved or bendable smartphone screens are inefficient due to the difficulty in applying liquid nitrogen effectively on non-flat surfaces, leading to defects and complications in the repair process.
Innovation Solution
An apparatus and method utilizing a container with vent holes to evaporate liquid nitrogen into a gas chamber, which surrounds the screen to freeze exposed surfaces, while an insulation pad maintains a warmer area to preserve adhesiveness in specific regions, allowing for controlled separation of screen components using nitrogen gas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If liquid nitrogen is poured on the screen to freeze and separate components, then the adhesive layer loses adhesiveness and separation becomes possible, but the liquid nitrogen runs off the curved surface and cannot effectively freeze the screen
Solution Approach 1:
The patent uses nitrogen gas as an intermediary medium to transfer cold from liquid nitrogen to the adhesive layer. The gas phase allows uniform distribution of cold around curved surfaces, solving the problem of liquid nitrogen running off and failing to freeze the adhesive effectively.
Solution Approach 2:
The patent changes the physical state of nitrogen from liquid to gas to improve its ability to conform to and freeze curved surfaces. The gas phase nitrogen can envelop the curved screen surface, ensuring uniform cooling of the adhesive layer without running off.
2Ease of repair
If the entire screen is frozen to separate components, then separation becomes possible, but adhesive layers in areas that should remain attached lose their adhesiveness
Solution Approach 1:
The patent applies local quality by using insulation pads selectively placed on specific areas of the screen to prevent freezing in those regions. This allows differential treatment of different areas - some frozen for separation, others protected to maintain adhesiveness for reassembly.
Solution Approach 2:
The patent segments the screen into different thermal zones by placing insulation pads on specific areas. This creates distinct frozen and protected regions, allowing selective separation of components while preserving adhesiveness where needed.
3Ease of repair
If curved screens are disassembled using conventional methods, then separation might be achieved, but the process becomes complicated and defects occur
Solution Approach 1:
The patent introduces nitrogen gas as an intermediary that simplifies the disassembly process for curved screens. The gas phase allows uniform cooling without the complexity of adapting liquid application methods to curved surfaces, eliminating defects and simplifying the overall 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
This approach enables efficient and defect-free disassembly of curved and bendable screens by evenly distributing cold nitrogen gas, maintaining adhesiveness in critical areas, and reducing the amount of nitrogen required, thus facilitating easier repair and reassembly of smartphone displays.
Implementation Method 1
evaporating liquid nitrogen to form the nitrogen gas
Implementation Method 2
an adhesive layer disposed in a cooling area of the display screen device proximate an exposed surface loses it adhesiveness as the cooling area becomes colder
Implementation Method 3
an insulation pad disposed within the nitrogen gas chamber and configured to be brought into contact with a protected surface of the display screen device
Data Source
AI summary
An apparatus for disassembling a display screen device. The apparatus comprises: 1) a container configured to receive liquid nitrogen into a liquid nitrogen chamber within the container, wherein at least one portion of the container has at least one vent hole that enables cold nitrogen gas to escape from the container; and 2) a cover configured to be brought into contact with the container to thereby form a nitrogen gas chamber that receives the nitrogen gas escaping from the container. The display screen device is disposed within the nitrogen gas chamber. The nitrogen gas freezes exposed surfaces of the display screen device. An adhesive layer disposed in a cooling area of the display screen device proximate an exposed surface loses it adhesiveness as the cooling area becomes colder. The apparatus further comprises an insulation pad disposed within the nitrogen gas chamber and configured to be brought into contact with a protected surface of the display screen device. The insulation pad creates a cooling protect area within the display screen device proximate the protected surface.