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A Novel Application of Ink-Jet Printing Technology on Manufacturing Color Filter for Liquid Crystal Display

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An ink-jet printing apparatus was setup to manufacture color filters. The apparatus includes a X-Y- table supporting the substrate, and a set of drop-on-demand ink-jet heads arranged on the adjustable Z-axis for coloring the filter elements. The mechanical motor drivers provide movements for the relative displacement of the substrate with respect to the ink-jet head. A processing of making color filter is discharging the predetermined color ink to the substrate, and then drying the discharged ink to form the color filter pattern. To reduce defective products caused by variance on drop position, this apparatus is additionally equipped with an optical system to detect the substrate position. This system has verified the printing behavior of three commercial print heads, HP51626A, HP51629A, and HP51645A. An image observation of the drop spot center position deviation and spot size deviation were performed. The results show the deviation range of a drop spot is within 4.01 μm, 4.10 μm, and 4.75 μm for HP51626A, HP51629A, and HP51645A, separately. This observation suggests the distance between the substrate and printhead should be closer to hide the satellite spot within main spot. In addition, the drop spot profile needs further study in order to improve its distribution characteristic on a filter element.
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Document Type: Research Article

Publication date: 2001-01-01

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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