18 Papers
397 Citations
Naoki Hirao is an academic researcher from Sony Broadcast & Professional Research Laboratories. The author has contributed to research in topics: Layer (electronics) & Substrate (printing). The author has an hindex of 9, co-authored 18 publications.
Chat about Author
Papers
Patent
Light emitting unit and display device
Katsuhiro Tomoda,Naoki Hirao,Goshi Biwa +2 more
- 22 Feb 2012
TL;DR: In this paper, a light emitting unit including plural kinds of light emitting elements with different light emitting wavelengths is defined, where at least one kind of light-emitting element includes a semiconductor layer configured by laminating a first conductive layer, an active layer and a second conducting layer and having a side surface exposed by the first, the active and the second conductive layers.
121
Patent
Method of electrically connecting element to wiring, method of producing light-emitting element assembly, and light-emitting element assembly
Naoki Hirao,Yasunobu Iwakoshi,Katsuhiro Tomoda,Huy Sam +3 more
- 27 Jun 2008
TL;DR: In this paper, a method of electrically connecting an element to wiring includes the steps of forming a conductive fixing member precursor layer at least on wiring provided on a base, and arranging an element having a connecting portion on the wiring such that the connecting portion contacts the conductive fix member preconditioned by solution-tape conductive material.
99
Patent
Manufacturing method of display device and display device
Toyoharu Oohata,Katsuhiro Tomoda,Naoki Hirao,Masato Doi +3 more
- 25 Mar 2010
TL;DR: In this paper, a manufacturing method of a display device, which includes a first step of collectively transferring light-emitting elements arranged at every specified number of light emitting elements formed and arranged on a first substrate to a transfer area set on a second substrate, is described.
45
Patent
Light emitting apparatus, illumination apparatus and display apparatus
Naoki Hirao,Katsuhiro Tomoda +1 more
- 30 Jan 2012
TL;DR: In this paper, a light emitting apparatus including one or a plurality of light emitting devices, each having electrodes and each emitting light from the upper surface of the light emitting device, is described.
24
Patent
Method of manufacturing semiconductor device
Naoki Hirao,Miura Yuya +1 more
- 06 Oct 2011
TL;DR: In this article, a method of manufacturing a semiconductor device including a nitride semiconductor layer having high-precision thickness is provided, which includes steps of: forming a gallium nitride (GaN) layer whose main face is a +c face on a substrate, forming a trench by selectively etching down a partial region in the +cface of the GaN layer, forming an metal layer so as to bury the trench, after that, polishing a −c face of the GAN layer until the metal layer is exposed, and removing a part in a
21