Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LED LUMINANCE CONTROL CIRCUIT, LED LUMINANCE CONTROL METHOD, AND LED LUMINANCE CONTROL PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/135380
Kind Code:
A1
Abstract:
[Problem] To provide an LED luminance control circuit, an LED luminance control method, and an LED luminance control program that enable both cost and installation space to be restrained and that enable early stabilization of the luminance of an LED. [Solution] This LED luminance control circuit is provided with: an LED voltage generation unit; an LED voltage control unit; and an LED current control unit. The LED voltage generation unit is configured to apply a voltage to an LED on the basis of an LED voltage command value inputted from the LED voltage control unit. The LED voltage control unit determines the LED voltage command value on the basis of the cathode potential of the LED. The LED current control unit controls the value of current supplied to the LED on the basis of the LED voltage command value.

Inventors:
KANAYAMA, Masumi (153 Shimokashiwano-machi Hakusan-sh, Ishikawa 66, 〒9248566, JP)
KAWAMURA, Kunio (153 Shimokashiwano-machi Hakusan-sh, Ishikawa 66, 〒9248566, JP)
Application Number:
JP2018/047994
Publication Date:
July 11, 2019
Filing Date:
December 27, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
EIZO CORPORATION (153 Shimokashiwano-machi, Hakusan-shi Ishikawa, 66, 〒9248566, JP)
International Classes:
H01L33/00; G05F1/56; H05B37/02
Download PDF: