Vacuum lamination device and vacuum lamination method

Abstract

A vacuum lamination device for laminating a lamination member includes a base plate having an uneven surface contacting the lamination member for placing the lamination member, a frame member fixed to the base plate and having a discharge port for evacuating a processing space, and a cover member for hermetically sealing the processing space in the lamination process. In a vacuum lamination method, the lamination member is placed on the uneven surface, and the cover member is placed so as to cover the lamination member. Then, a gaseous material in the processing space is evacuated through the discharge port while heating the processing space.

Description

BACKGROUND OF THE INVENTION AND RELATED ART STATEMENT [0001] The present invention relates to a vacuum lamination device and a vacuum lamination method, and more particularly relates to a vacuum lamination device and a vacuum lamination method for performing a lamination process by evacuating a processing space in which a member to be laminated (hereinafter referred to as lamination member) such as a solar cell module and the like is arranged. [0002] A large amount of fossil fuel has been consumed since Industrial Revolution, and the global environment has been worsened due to air pollution and global warming by CO2. Accordingly, in recent years, environmental consciousness has been increased in the global scale. In this circumstance, solar cells have been expected to be as safe, easy to handle, and clean energy source. There are several types of solar cells including a single crystal silicon solar cell, a polycrystalline silicon solar cell, an amorphous silicon solar cell, and a co...

AI Technical Summary

Benefits of technology

[0015] With the structure described above, the processing space is hermetically sealed by the cover member. Air in the processing space is evacuated through the discharge port formed in the frame member. The uneven portion of the base plate forms an evacuation layer upon degassing the lamination member, thereby facilitating the evacuation of the lamination member.

[0016] In the present invention, the uneven portion is formed on the surface of the base plate contacting the lamination member. Accordingly, it is possible to ensure the evacuation layer between the lamination member and the base plate without providing a specific evacuation layer member, thereby degassing the lamination member with the simple structure and reducing manufacturing cost of the vacuum lamination device. Further, it is possible to eliminate an evacuation layer member having low thermal conductivity between the base plate and the lamination member, thereby improving the heating efficiency.

[0017] The lamination member may be a solar cell module and placed on the base plate such that a light reception surface thereof contacts the uneven portion. In such a case, an uneven surface is formed on the light reception surface of the solar cell module, thereby preventing regular reflection and obtaining an excellent appearance. Further, another uneven portion may be formed on a surface of the base plate opposite to the surface thereof contacting the lamination member. Accordingly, it is possible to increase a surface area, thereby improving the heating efficiency. At the same time, it is possible to increase a frictional force so that the vacuum lamination device does not slip when being transferred with rollers and the like.

Problems solved by technology

A large amount of fossil fuel has been consumed since Industrial Revolution, and the global environment has been worsened due to air pollution and global warming by CO2.

Particularly, when a large solar cell module such as the amorphous silicon solar cell is produced, due to the insufficient evacuation, it is difficult to eliminate bubbles between the laminated members constituting the solar cell module.

Accordingly, the layer structure becomes complicated and cost of the vacuum lamination device increases.

Particularly, in the lamination process of a large-sized solar cell module, the lamination member also becomes large, thereby making it difficult to handle the vacuum lamination device and increasing assembling cost.

In the conventional vacuum lamination device, the evacuation layer members and the sealing material flow-out prevention member have poor thermal conductivity, thereby lowering heating efficiency.

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