Yifeng Li

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Bejing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for exposure pattern correction and exposure s...
- Patent number 9,841,690
- Issue date Dec 12, 2017
- BOE Technology Group Co., Ltd.
- Yifeng Li
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR EXPOSURE PATTERN CORRECTION AND EXPOSURE S...
- Publication number 20170023864
- Publication date Jan 26, 2017
- BOE TECHNOLOGY GROUP CO., LTD.
- Yifeng Li
- G02 - OPTICS