Face-to-face opto-coupler device and method of manufacture

摘要

An optoelectronic device is disclosed. The optoelectronic device may be employed as a single or multi-channel opto-coupler that electrically isolates one circuit from another circuit. The opto-coupler may include one or more folded leads that establish an enhanced isolation gap. The enhanced isolation gap may include an interruption in the insulation of the opto-coupler between the light source and the light detector. In addition, this interruption may further include a efficiency enhancer, or lens, to direct light emitted from the light source. Accordingly, the creepage distance and operational voltages of the opto-coupler can be increased while maintaining high efficiency levels.

主权项

1. An opto-coupler device, comprising:
a leadframe comprising one or more input leads that are electrically isolated from one or more output leads; a light source mounted to a bonding surface of a first lead, the first lead being in the one or more input leads, wherein the light source is configured to emit light via a first exposed surface; a light detector mounted to a bonding surface of a second lead, the second lead being in the one or more output leads, wherein the light detector is configured to detect light via a second exposed surface; an enhanced isolation gap establishing an optical volume between the light source and light detector; a first mold material provided adjacent to at least one of the light source and the light detector, wherein the first mold material is at least partially within the enhanced isolation gap; and an efficiency enhancer interposed in at least a portion of the enhanced isolation gap.