Pattern exposure method and apparatus
First Claim
1. A pattern exposure method for moving outgoing beams emitted from light sources and a work relatively so as to expose a desired position of the work to the outgoing beams, the pattern exposure method comprising the steps of:
- preparing a plurality of light sources emitting outgoing beams different in wavelength; and
turning on/off the light sources to thereby irradiate one and the same point of the work with a plurality of beams different in wavelength.
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Accused Products
Abstract
A maskless exposure method and a maskless exposure apparatus in which maskless exposure can be performed efficiently with high-directivity illumination light, while the exposure efficiency of solder resist can be improved. Blue-violet semiconductor lasers 12A emitting laser beams 1a with a wavelength of 405 nm and ultraviolet semiconductor lasers 12B emitting laser beams 1b with a wavelength of 375 nm are provided to irradiate a substrate 8 with the laser beams 1a and 1b whose optical axes are made coaxial. In this event, one and the same place on the substrate 8 is irradiated with the laser beams 1a and 1b a plurality of times. Thus, the variation in intensity of the laser beams 1a and 1b is averaged.
17 Citations
6 Claims
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1. A pattern exposure method for moving outgoing beams emitted from light sources and a work relatively so as to expose a desired position of the work to the outgoing beams, the pattern exposure method comprising the steps of:
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preparing a plurality of light sources emitting outgoing beams different in wavelength; and
turning on/off the light sources to thereby irradiate one and the same point of the work with a plurality of beams different in wavelength. - View Dependent Claims (2, 3, 4)
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5. A pattern exposure apparatus comprising:
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at least two color light sources emitting lights different in wavelength;
an optical system for projecting outgoing beams emitted from the light sources on a work;
a switching means for turning on/off the light sources;
a moving means for moving projected spots and the work relatively; and
a control means for controlling the relative movement of the projected spots and the work and the on/off switching of the light sources synchronously with each other. - View Dependent Claims (6)
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Specification