Method for producing color-wheel segments

Details Method for producing color-wheel segments Method for producing color-wheel segments

2005-01-18

2008-07-29

Smith, Matthew S. (Department: 2823)

Semiconductor device manufacturing: process

Making device or circuit emissive of nonelectrical signal

Substrate dicing

C359S891000, C359S892000, C353S084000, C348S743000, C356S418000, C352S241000

Reexamination Certificate

active

07405095

ABSTRACT:
A method for producing from a plate-shaped substrate circular sections for use for instance in a color wheel encompasses inter alia such steps as positioning predefined edge break lines in such fashion that the circular sections to be separated at a subsequent point are arranged in columns, with the circular sections within a column being so positioned relative to one another that in each case at least certain points of the inner annular edge are in contact with the outer annular edge of another circular section, thus forming part of a common predefined edge break line, while the orientation of the curvature of the circular sections of neighboring columns is reversed in alternating fashion. In a subsequent step the circular sections are separated along the predefined edge break lines.

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