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Common Cathode and Anode for Power Monitoring

IP.com Disclosure Number: IPCOM000021503D
Publication Date: 2004-Jan-21
Document File: 3 page(s) / 276K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for a common cathode and anode to monitor power, by using a single metal pad with a photodiode on the PLC. Benefits include a reduction in material costs.

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Common Cathode and Anode for Power Monitoring

Disclosed is a method for a common cathode and anode to monitor power, by using a single metal pad with a photodiode on the PLC. Benefits include a reduction in material costs.

Background

Currently, to build power monitor devices with either a common cathode or a common anode, two different metal layouts on the PLC are required.

General Description

The disclosed method uses one metal layout on the PLC. This layout contains a photodiode on the PLC that determines the polarity of the common pad (i.e. determines common cathode or common anode). Symmetric and/or common metal pads are required between the PLC and the photodiode. Figures 1 and 2 show the metal pads layout on the photodiode. Figure 3 shows multiple metal pads on the PLC, with a common pad. Figure 4 shows the metal layout on the PLC with the common pads.

Advantages

The disclosed method reduces process costs by using one metal layout on the PLC that fulfills both cathode and anode requirements.

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Disclosed anonymously