Invention Grant
- Patent Title: Split driver backlight systems and methods
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Application No.: US15784943Application Date: 2017-10-16
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Publication No.: US10237936B2Publication Date: 2019-03-19
- Inventor: Mohammad J. Navabi-Shirazi , Alejandro Lara Ascorra , Asif Hussain , Ji Yeoul Ryoo , Jingdong Chen , Jun Qi , Manisha P. Pandya , Yanhui Xie
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Morgan, Lewis & Bockius LLP
- Main IPC: H05B37/02
- IPC: H05B37/02 ; H05B33/08 ; G02F1/1335 ; G02F1/13357 ; G02F1/1343

Abstract:
Aspects of the subject technology relate to control circuitry for light-emitting diodes. The control circuitry may operate a light-emitting diode using a multi-peak pulse-width-modulation signal. The control circuitry may include a multi-stage driver having a relatively larger driver stage for providing a direct current through a light-emitting diode and a relatively smaller driver stage configured to cooperate with a pulse-width-modulation controller to pulse-width-modulate a current through the light-emitting diode.
Public/Granted literature
- US20190059136A1 SPLIT DRIVER BACKLIGHT SYSTEMS AND METHODS Public/Granted day:2019-02-21
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