Semiconductor device and method of producing high contrast...

Details Semiconductor device and method of producing high contrast... Semiconductor device and method of producing high contrast...

2007-09-04

2007-09-04

Geyer, Scott B. (Department: 2812)

Active solid-state devices (e.g., transistors, solid-state diode

Encapsulated

With specified encapsulant

C257SE23179

Reexamination Certificate

active

11526254

ABSTRACT:
A semiconductor device (50) includes a semiconductor die (20) having a first surface (14) for forming electronic circuitry. A coating layer (16) formed on a second surface (15) of the semiconductor die has a color that contrasts with the color of the semiconductor die. The coating layer is patterned to expose a portion of the second surface to reveal information pertaining to the semiconductor device. The coating layer is patterned by directing a radiation beam (30) such as a laser to selectively remove material from the coating layer.

REFERENCES:
patent: 2003/0080440 (2003-05-01), Miks et al.

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