Invention Application
- Patent Title: Current-Voltage Driving for LED Display System
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Application No.: US17887136Application Date: 2022-08-12
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Publication No.: US20230089957A1Publication Date: 2023-03-23
- Inventor: Thomas Charisoulis , Saif Choudhary , Tore Nauta
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Main IPC: G09G3/32
- IPC: G09G3/32 ; H05B45/14

Abstract:
A display device includes a voltage source that provides a voltage and a current source that provides a current. The display device also includes light emitting diodes (LEDs) that emit light to display an image on the display device. Additionally, the display device includes pixel driving circuitry that drives the LEDs using the voltage or the current. In particular, the pixel driving circuitry provides the LEDs with the voltage from the voltage source for a first period of time to enable the LEDs to reach an illumination threshold. Moreover, the pixel driving circuitry, after providing the voltage from the voltage source for the first period of time, drives the LEDs using the current from the current source to cause the LEDs to emit light substantially uninterrupted when changing between providing the voltage from the voltage source to driving the one or more LEDs using the current source.
Information query
IPC分类: