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Portable electronic device

  • US 8,405,790 B2
  • Filed: 04/04/2011
  • Issued: 03/26/2013
  • Est. Priority Date: 08/23/2000
  • Status: Expired due to Term
First Claim
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1. A portable electronic device comprising:

  • an EL display device comprising a touch input tablet and a detection circuit and a pixel, andwherein the pixel comprises at least an EL element, a first thin film transistor, a second thin film transistor, a third thin film transistor, a fourth thin film transistor, a fifth thin film transistor, and a capacitor,wherein the EL element comprises at least a first electrode, an EL layer and a second electrode,wherein banks are formed at both ends of the first electrode,wherein the EL layer is formed on the first electrode and the banks,wherein a part of the EL layer overlaps the banks, andwherein the part of the EL layer overlaps the second electrode,.

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