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Active matrix substrate, method of making the substrate, and display device

  • US 7,459,723 B2
  • Filed: 06/08/2006
  • Issued: 12/02/2008
  • Est. Priority Date: 08/28/2000
  • Status: Expired due to Fees
First Claim
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1. An active matrix substrate comprising:

  • a base substrate;

    a plurality of gate lines formed on the base substrate;

    a plurality of data lines, each said data line crossing all of the gate lines with a first insulating film interposed therebetween;

    a plurality of thin-film transistors formed over the base substrate, each said thin-film transistor being associated with one of the gate lines and operating responsive to a signal on the associated gate line;

    a plurality of lower-level pixel electrodes, each said lower-level pixel electrode being associated with one of the data lines and one of the thin-film transistors and being electrically connectable to the associated data line by way of the associated thin-film transistor; and

    a plurality of upper-level pixel electrodes located over the lower-level pixel electrodes with a second insulating film interposed therebetween, each said upper-level pixel electrode being associated with, and electrically connected to, one of the lower-level pixel electrodes by way of an associated contact hole,wherein each said upper-level pixel electrode and the associated lower-level pixel electrode together makes up a pixel electrode, which is connected to the thin-film transistor, associated with the lower-level pixel electrode, by way of a conductive member, andwherein the data lines, the conductive members and the lower-level pixel electrodes have all been formed by patterning the same conductive film, andwherein each said lower-level pixel electrode crosses one of the gate lines, while the conductive member for the lower-level pixel electrode crosses another one of the gate lines that is adjacent to the former gate line.

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