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:
Dec. 10, 2013
Filed:
Mar. 24, 2011
Pradip Dhirajlal Patel, Redwood City, CA (US);
Ajay Kumar Ghai, San Jose, CA (US);
Steve Detlev Cate, Los Altos, CA (US);
Pradip Dhirajlal Patel, Redwood City, CA (US);
Ajay Kumar Ghai, San Jose, CA (US);
Steve Detlev Cate, Los Altos, CA (US);
Maxim Integrated Products, Inc., San Jose, CA (US);
Abstract
Proximity sensor devices are described that integrate a light emitting diode with a light sensor assembly in a single, compact package. The proximity sensor devices comprise a lead frame having a surface. The light emitting diode and light sensor assembly are mounted to the lead frame proximate to the surface. The light emitting diode is configured to emit electromagnetic radiation in a limited spectrum of wavelengths, while the light sensor assembly is configured to detect electromagnetic radiation in the limited spectrum of wavelengths emitted by the light emitting diode. An encapsulation layer is formed on the surface over the light emitting diode and light sensor assembly. A trench is formed in the encapsulation layer to receive electromagnetic radiation blocking material configured to block electromagnetic radiation in the limited spectrum of wavelengths to at least partially mitigate crosstalk between the light emitting diode and the light sensor assembly.