Biasing apparatus, systems, and methods

Details Biasing apparatus, systems, and methods Biasing apparatus, systems, and methods

2007-10-04

2009-08-04

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140RC, C327S514000, C348S308000

Reexamination Certificate

active

07569803

ABSTRACT:
Apparatus, methods, and systems for providing a uniform bias voltage in a biasing circuit to a plurality of pixels. The biasing circuit has a plurality of switches, including a first switch connected at a first end of a capacitor and a second end connected to a first ground. A second switch is connected at a first end to a bias voltage reference and at a second end to a gate of a biasing transistor and a second end of the capacitor. A third switch is connected at a first end to the first end of the capacitor and at a second end to the drain of the biasing transistor and a second ground. The first and the second switch are closed and the third switch is open to set a bias voltage on the capacitor. The first and second switch are open and the third switch is closed when the bias voltage is set on the capacitor.

REFERENCES:
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patent: 2009/0057536 (2009-03-01), Hirose
patent: 2009/0059047 (2009-03-01), Murata et al.

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