High-efficiency backlight driver

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11922892
APP PUB NO 20220230597A1
SERIAL NO

17374929

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The disclosed devices may include a driver circuit including a voltage boost circuit, a pulse modulation controller, and optionally a headroom processor. The voltage boost circuit may be configured to receive a device input voltage (such as a battery voltage) and generate a backlight drive voltage. The pulse modulation controller may be configured to provide a pulse modulation signal to the voltage boost circuit, and may include a digital circuit or an analog circuit. Example devices may include a backlight unit receiving the backlight voltage. The optional headroom processor may provide a headroom signal to the pulse modulation controller based on a headroom voltage determined from the backlight unit. Devices may further include a backlight unit including an arrangement of light-emissive elements, and may include display devices such as head-mounted devices. Various other methods, systems, and computer-readable media are also disclosed.

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Patent Owner(s)

Patent OwnerAddress
META PLATFORMS TECHNOLOGIES LLC1601 WILLOW ROAD MENLO PARK CA 94025

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chung, Stella Fremont, US 1 1
Fierro, Joaquin Andres Los Gatos, US 2 2
Hu, Chao San Ramon, US 36 359
Liu, Yuming Mountain View, US 43 356
Rahman, Tajbid Ozone Park, US 1 1
Slattengren, Nathan San Francisco, US 4 9
Viviescas, David Mountain View, US 3 7

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