Integrated thermal ink jet printhead and method of manufacture

Details Integrated thermal ink jet printhead and method of manufacture Integrated thermal ink jet printhead and method of manufacture

1986-01-17

1988-01-12

Goldberg, E. A.

Recorders

Markers and/or driving means therefor

With ink supply to marker

29569R, 29577R, 29577C, 29592R, 427 96, 427402, 427404, 437 60, G01D 1518, H01L 2100, B05D 512

Patent

active

047194774

ABSTRACT:
This application discloses a novel thermal ink jet printhead and related integrated pulse driver circuit useful in thermal ink jet printers. This combined printhead and pulse drive integrated circuit includes a first level of metalization comprising a refractory metal which is patterned to define the lateral dimension of the printhead resistor. A passivation layer or layers are deposited atop this first level of metalization and patterned to have an opening or openings therein for receiving a second level of metalization. This second level of metalization such as aluminum may then be used for electrically interconnecting the printhead resistors to MOSFET drivers and the like which have been fabricated in the same silicon substrate which provides support for the printhead resistors. Thus, this "on-chip" driver construction enables these pulse driver transistors to be moved from external electronic circuitry to the printhead substrate.

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patent: 4472875 (1984-09-01), Christian et al.
patent: 4535343 (1985-08-01), Wright et al.
patent: 4567493 (1986-01-01), Ineda et al.

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