Cassette for loading glass substrates

Details Cassette for loading glass substrates Cassette for loading glass substrates

1998-05-11

2001-08-14

Stodola, Daniel P. (Department: 3634)

Supports: racks

Special article

Platelike

C211S041100, C206S454000, C118S500000, C312S009470, C312S009630, C312S209000

Reexamination Certificate

active

06273275

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a cassette for loading glass substrates, and more particularly to a cassette for loading glass substrates which is small and light and prevents large glass substrates for liquid crystal display devices from drooping and reducing the pitch between adjacent glass substrates.
Generally, a cassette is part of an assembly of elements, e.g. fixing elements and controlling and guiding cutter devices, etc. Therefore, a cassette for loading glass substrates of a liquid crystal display device utilizes a glass substrate-carrying robot for guiding them to the next step in the process of manufacturing liquid crystal display devices.
FIG. 1
is a front view of a conventional cassette for loading glass substrates. As shown in the figure, the conventional cassette for loading glass substrates
10
has a plurality of edge supporting members
5
for maintaining glass substrates
3
in position inside the cassette.
Since the edge supporting member
5
is fixed as a protrusion to both side supports
7
of the cassette
10
, when loading the glass substrate
3
of a liquid crystal display device, the edge supporting members
5
support the ends of the glass substrate
3
but not the middle portion thereof, which permits the glass substrate to sag or droop. In connection with a glass substrate
3
of a liquid crystal display device, because its thickness is less than 1 mm and the degree of drooping or sagging is in proportion to the size of the glass substrate, the possibility of the glass substrate breaking is substantially increased.
Moreover, because it is hard to maintain the loaded glass substrate in a horizontal position, it is easy to cause interference with a glass substrate-carrying robot, and therefore the damage rate of the glass substrate is very high. Furthermore, the conventional cassettes for loading glass substrates have been generally applied to glass substrates for small size liquid crystal display devices, so that it is inappropriate to apply these cassettes to glass substrates for large size liquid crystal display devices.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a cassette for loading glass substrates which has substrate-supporting members which are mounted vertically to the width and the horizontal length of the glass substrate utilized for liquid crystal display devices and minimize the pitch between the glass substrates, and its volume and weight.
In order to realize this objective, the cassette for loading glass substrates of the present invention utilizes a plurality of horizontal substrate-supporting members to relieve the impact added to the glass substrates.


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