Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Presses or press platen structures – per se
Reexamination Certificate
1999-01-21
2001-05-08
Osele, Mark A. (Department: 1734)
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Presses or press platen structures, per se
C156S345420, C156S247000, C156S254000, C083S027000, C083S107000, C083S433000, C083S874000
Reexamination Certificate
active
06227276
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention relates to an apparatus for removing a polarizer of liquid crystal display.
(b) Description of the Related Art
A liquid crystal display includes a pair of glass substrates having a gap therebetween, sealant sealed up edges of the glass substrate, a liquid crystal interposed in the gap between the substrates and enclosed by the sealant, a plurality of electrodes formed on the inner surfaces of the substrates and generating electric fields to rearrange the liquid crystal molecules, a pair of alignment films which are formed on the electrodes and aligns the liquid crystal molecules, and a pair of polarizers attached to the outer surfaces of the substrates.
In the manufacturing process of the liquid crystal display, when the polarizers goes wrong, the polarizers are peeled off and new polarizers are attached.
In a conventional method of removing the bad polarizer, one corner of the polarizer are lifted using a sharp knife, and the polarizer is peeled off manually. In this step, the worker may be hurt by the sharp corner of the polarizer.
Furthermore, removal of the polarizer is very laborious, and thus the product yield may be reduced.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a device for automatically removing a polarizer of a liquid crystal display.
A polarizer removing device according to the present invention includes a fixing member fixing a liquid crystal display including a panel and a polarizer attached to the panel, a separator which separates an edge of a polarizer from the panel by inserting itself between the polarizer and the panel, a first moving member transferring the separator, a clamping member clamping the edge of the polarizer separated from the panel, and a second moving member moving the clamping member to separate the polarizer from the panel.
The fixing member may include a vacuum adsorber, and they have an adsorption plate provided on the surface that the liquid crystal display contacts.
The separator has a sharp edge to be easily inserted between the panel and the polarizer.
The first moving member and the second moving member may include a hydro-cylinder, a pneumatic cylinder or a servomotor.
The clamping member has a fixing member coupled to the separator, a moving member installed to the fixing member with a gap, and a clamping cylinder coupled to the moving member to move toward or away from the fixing member.
A device for removing a polarizer of the present invention removes the polarizer from the panel. When the liquid crystal display is fixed by adsorption plate of vacuum adsorber of holder, a sharp edge of the separator is located in the edge part of the liquid crystal display. The separator gets inserted between the polarizer and the panel to separate the corner of the polarizer from the panel. When the clamping member clamps the edge of the polarizer separated from the panel, the second moving member moves the clamping member.
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patent: 5022951 (1991-06-01), Behlmer et al.
patent: 5091042 (1992-02-01), Bruckner
patent: 5282918 (1994-02-01), Heist et al.
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patent: 5676789 (1997-10-01), Hamamura
patent: 58-59062 (1988-11-01), None
patent: 63-288721 (1988-11-01), None
Kim Do-Whan
Kim Young-Gil
Howrey Simon Arnold & White , LLP
Osele Mark A.
Samsung Electronics Co,. Ltd.
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