Light emitting element drive device, light emitting element drive method, and display apparatus

Patent metadata

Field	Value
Publication number	US-9105219-B2
Application number	US-201313780832-A
Country	US
Kind code	B2
Filing date	Feb 28, 2013
Priority date	Mar 23, 2012
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

A light emitting element drive device includes: a light emitting section having a light emitting element; output capacitance capable of storing power supplied to the light emitting section; a driver connected between the light emitting section and a reference potential and including a switch section whose conductive state is controlled by a pulse-like lighting signal depending on magnitude of a load current and a constant current source section connected in series to the switch section; and a power supply controller being a power supply that provides drive power to the light emitting section and including a function to adjust an output current supplied to the output capacitance. The power supply controller changes the supply amount of the output current for the light emitting section from the power supply controller based on load current information that is necessary peak power of the light emitting section.

First claim

What is claimed is:

1. A light emitting element drive device comprising:
a light emitting section configured to include a light emitting element that emits light with luminance depending on a flowing current;
output capacitance configured to be capable of storing power supplied to the light emitting section;
a driver configured to be connected between an other end side of the light emitting section and a reference potential and include a switch section whose conductive state i…

Assignees

• Sony Corp

Inventors

• Nishino Tatsuki
• Katayama Yasushi
• Kobori Makoto
• Oyama Yoshiki

Classifications

• G09G3/3406 Primary

  Physics · mapped topic

• G09G2320/064

  Physics · mapped topic

• G09G5/10 Primary

  Physics · mapped topic