The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 2021
Filed:
Apr. 26, 2018
Applied Materials, Inc., Santa Clara, CA (US);
Christopher Dennis Bencher, Cupertino, CA (US);
Joseph R. Johnson, Redwood City, CA (US);
APPLIED MATERIALS, INC., Santa Clara, CA (US);
Abstract
Embodiments of the present disclosure provide improved photolithography systems and methods using a solid state emitter device. The solid state emitter device includes an array of solid state emitters arranged in a plurality of horizontal rows and vertical columns. The variable intensity of each group of solid state emitters, for example an entire row or column of solid state emitters, is controllable for improved field brightness uniformity and stitching. Controlling the variable intensity includes, for example, varying the signal, such as voltage, that is applied to each of the rows of solid state emitters to attenuate the brightness from the middle of the array to the edges of the array to accommodate for overlapping exposures during photolithography processing.