Device for forming groove pattern of light-guiding plate and...

Details Device for forming groove pattern of light-guiding plate and... Device for forming groove pattern of light-guiding plate and...

2006-12-14

2011-10-25

Gupta, Yogendra (Department: 1744)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C264S299000, C264S239000, C425S289000, C425S290000, C425S291000, C425S298000, C425S299000

Reexamination Certificate

active

08043547

ABSTRACT:
A device and method for forming a groove pattern in a light-guiding plate for obtaining high luminance and decreasing processing time, thereby improving yield. The device has a tool unit including a tool guide and a head which is further provided with a heating plate disposed below the tool unit; a stamper disposed under the heating plate; and a plurality of cutting tools extending from a lower side of the stamper at fixed intervals, for forming a plurality of groove patterns in a surface of the light-guiding plate.

REFERENCES:
patent: 4642086 (1987-02-01), Howarth, Jr.
patent: 5366685 (1994-11-01), Fujii et al.
patent: 5635256 (1997-06-01), Olson
patent: 5644979 (1997-07-01), Raney
patent: 5735988 (1998-04-01), Chau et al.
patent: 5922238 (1999-07-01), Savant et al.
patent: 5961198 (1999-10-01), Hira et al.

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