Invention Grant
- Patent Title: Light-emitting element driving circuit and display device
- Patent Title (中): 发光元件驱动电路及显示装置
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Application No.: US14071921Application Date: 2013-11-05
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Publication No.: US09101023B2Publication Date: 2015-08-04
- Inventor: Shinji Ota
- Applicant: NLT Technologies, Ltd.
- Applicant Address: JP Kanagawa
- Assignee: NLT TECHNOLOGIES, LTD.
- Current Assignee: NLT TECHNOLOGIES, LTD.
- Current Assignee Address: JP Kanagawa
- Agency: Young & Thompson
- Priority: JP2012-244963 20121107
- Main IPC: H05B37/02
- IPC: H05B37/02 ; H05B39/04 ; H05B41/36 ; H05B41/282 ; H05B33/08

Abstract:
A light-emitting element driving circuit controls the luminance of light-emitting elements by using a PWM signal. A display device includes the driving circuit and multiple light-emitting elements. The driving circuit includes a control circuit that generates a control signal by using a divided signal based on an input PWM signal, and a light-emitting element driving unit that drive the light-emitting elements by using the control signal. The control signal includes a larger number of frequency components in comparison with frequency components of the input PWM signal.
Public/Granted literature
- US20140125243A1 LIGHT-EMITTING ELEMENT DRIVING CIRCUIT AND DISPLAY DEVICE Public/Granted day:2014-05-08
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