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The Performance of High-Frequency and Picoliter-Droplet Inkjet Printhead by a Standard CMOS Processes

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Enhance of the number and array density of nozzles within an inkjet head chip is the key to raise the printing speed and printing resolutions. The smart printhead has been designed by a 0.5 um CMOS processes. The physical design rules of 0.5um 2P2M 12V/12V, (Double Poly Double Metal Vds/Vgs) high voltage process and MIXED-MODE processes. This study develops the integrated multiplexer driver inkjet head (IMDH) by a standard CMOS processes to reduce the connecting addresses needed for controlling the nozzle orifices which ejection the small size of droplet. By using both the high-dose current (HDC) driver and high-dose current driver integrated (HDCI) process, it is able to control over 400 nozzles within an inkjet head chip and improve the chipset packaging density and alignment accuracy. The spec of IMDH printhead developed by OES/ITRI is 408nozzles/432heaters, 5 pL of ejected droplet volume and with the operating firing frequency of 18kHz. Combining both the HDCI process and high-density micro-fluidic channel design architecture, IMDH inkjet head is the supreme product developed by OES/ITRI in the present state and is the same or even higher level with famous factory's highest end of commercial products. This technology could be applied not only on the inkjet printhead products but also on many other applications.

Document Type: Research Article

Publication date: 2004-01-01

More about this publication?
  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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