A field-emission display (5-in.) using thick-film carbon nanotube emitters is fabricated. A thick-film insulating layer and an emitter layer are employed for low-cost manufacturing and scalability to a large panel. A self-focus cathode for this display is proposed. An auxiliary electrode in contact with the cathode electrode surrounds the emitter layer at the center of gate aperture. The structure has several advantages in manufacturing. According to simulation results, this self-focus cathode structure shows excellent focusing effects in spite of its simple manufacturing process and structure.

We investigate the sub-20nm level scalability of STT-MRAM cells possessing perpendicular magnetization induced from the interface of free layer (FL) and MgO tunnel barrier. We demonstrate that the MTJs utilizing dual interfaces of FL and MgO exhibit enhanced scalability with high thermal stability and low switching current, compared with the MTJs with a single interface. As thermal stability factor (') varies as a function of MTJ dimension, MTJs with dual interfaces show ' over 60 at 20nm node, while MTJs of single interface show ' around 33. MTJs with dual interface also exhibit lower switching current per thermal stability (Ic/'), ~1/2 level of single interface MTJs.

No abstract

We report a method to fabricate carbon nanotubes (CNT)/conducting polymer composite films for the application of CNTs to field emission displays. The composite was prepared by a combination of electrochemical polymerization of pyrrole and electrophoretic deposition of CNTs. We obtained a uniform CNT/conducting polypyrrole polymer composite film. The CNTs were mainly coated on protrusions of the polypyrrole film and emitted electrons without rubbing and stretching. We realized a triode-type field emission array (FEA) using the CNT/polypyrrol composite. This FEA showed that the emission current was modulated by gate voltage of 30 V. The film morphology and emission characteristics of the CNT/conducting polymer composite were studied using optical microscopy, scanning electron microscopy, and an emission test in vacuum.

No abstract