Light-emitting device and display device

Patent metadata

Field	Value
Publication number	US-9786638-B2
Application number	US-201615167410-A
Country	US
Kind code	B2
Filing date	May 27, 2016
Priority date	Oct 15, 2010
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

Disclosed herein is a light-emitting device including a plurality of first light-emitting elements mounted in a matrix form on a common wiring board. Each of the first light-emitting elements has a single crystal semiconductor multilayer structure and is a semiconductor element in the form of a chip that emits light in a given band of wavelengths. When attention is focused on the plurality of first light-emitting elements that belong in a given area of all the plurality of first light-emitting elements, the orientations of the common crystal axes of the first light-emitting elements adjacent to each other at least in one of the row and column directions differ.

First claim

What is claimed is:

1. A display device comprising:
a display panel having a plurality of first light-emitting elements mounted in a matrix form on a common wiring board; and
a drive circuit adapted to drive the plurality of first light-emitting elements based on a video signal, wherein
each of the plurality of first light-emitting elements has a single crystal semiconductor multilayer structure and is a semiconductor element in a form of a chip that emits light in a given band of wavelengths, and
wherein each multilayer structure includes an active layer and at least one semiconductor layer formed over the active layer such that the active layer is between the at least one semiconductor layer and the common wiring board,
wherein each of the plurality of first light-emitting elements has a crystal axis, being a crystal growth axis, oriented at a non-zero angle to a direction normal to a surface of the light-emitting element, and
wherein first light-emitting elements adjacent to each other at least in one of row and column directions have crystal axes oriented at different non-zero angles.

2. The display device of claim 1 comprising:
a plurality of second light-emitting elements mounted in a matrix form on the wiring board together with the plurality of first light-emitting elements, wherein
each of the second light-emitting elements has a single crystal semiconductor multilayer structure and is a semiconductor element in a form of a chip that emits light in a band of wavelengths different from that for the first light-emitting elements, and
wherein each of the plurality of second light-emitting elements has a crystal axis oriented at a non-zero angle to a direction normal to a surface of the light-emitting element, and
wherein second light-emitting elements adjacent to each other at least in one of the row and column directions have crystal axes oriented at different non-zero angles.

3. The display device of claim 2 , wherein
each of the first and second light-emitting elements has a plurality of electrodes,
the wiring board has first wires, each connected to one of the plurality of electrodes and second wires each connected to another of the plurality of electrodes, and
the first and second wires are laid out identically in relation to all the plurality of first and second light-emitting elements located in a first area of the wiring board.

4. The display device of claim 2 , wherein
the first and second light-emitting elements are arranged alternately in the column direction, and
at least one first light-emitting element and at least one second light-emitting element adjacent to each other in the column direction emit different polarized light components.

Assignees

• Sony Corp

Inventors

• Okuyama Hiroyuki

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H01L25/167

  Electricity · mapped topic

• H01L27/3206

  Electricity · mapped topic

• H01L33/62

  Electricity · mapped topic

• H01L25/0753 Primary

  Electricity · mapped topic