公开(公告)号：US20240096291A1

公开(公告)日：2024-03-21

申请号：US18243011

申请日：2023-09-06

Applicant: Apple Inc.

Inventor： Ming Sun ,  Nicola Rasera ,  Robert D Zucker ,  Johan L Piper ,  Denis M Darmon ,  Fabio Ongaro ,  Xiaofeng Wang

IPC: G09G3/34

CPC classification number: G09G3/3413 ,  G09G3/346 ,  G09G2320/0209 ,  G09G2320/0247 ,  G09G2330/021

Abstract: Systems and methods for electronic displays to use reference voltages to control driving current of illuminators are provided. The reference voltages are used to reduce or eliminate cross talk in driving voltages among different illuminators and driving voltage variations from frame to frame. The transient performance of the driving current of the illuminator (e.g., the current rise/decline time, current overshoot issue, current settling time) may be improved by implementing the reference voltages.

公开(公告)号：US20240105118A1

公开(公告)日：2024-03-28

申请号：US18335114

申请日：2023-06-14

Applicant: Apple Inc.

Inventor： Johan L Piper ,  Arash Hazeghi ,  Adam Adjiwibawa

IPC: G09G3/3225 ,  G09G3/34

CPC classification number: G09G3/3225 ,  G09G3/346 ,  G09G2310/08 ,  G09G2320/041

Abstract: A device may include an electronic display to display an image frame based on image data. The electronic display may include an illuminator that generates light, multiple light regulators that control emission of the light pixel locations on the electronic display based on bitplane data, and driving circuitry that applies an operating electrical stimulus to the illuminator during an emission period of the image frame and a reference electrical stimulus to the illuminator during an off period of the image frame. While the reference electrical stimulus is applied the bitplane data may be indicative of off bitplane. Additionally, the electronic display may include measurement circuitry that measures a response characteristic of the illuminator in response to the reference electrical stimulus and generates temperature data indicative of the temperature of the illuminator based on the response characteristic.

公开(公告)号：US12073782B2

公开(公告)日：2024-08-27

申请号：US18335114

申请日：2023-06-14

Applicant: Apple Inc.

Inventor： Johan L Piper ,  Arash Hazeghi ,  Adam Adjiwibawa

IPC: G09G3/3225 ,  G09G3/34

CPC classification number: G09G3/3225 ,  G09G3/346 ,  G09G2310/08 ,  G09G2320/041

Abstract: A device may include an electronic display to display an image frame based on image data. The electronic display may include an illuminator that generates light, multiple light regulators that control emission of the light pixel locations on the electronic display based on bitplane data, and driving circuitry that applies an operating electrical stimulus to the illuminator during an emission period of the image frame and a reference electrical stimulus to the illuminator during an off period of the image frame. While the reference electrical stimulus is applied the bitplane data may be indicative of off bitplane. Additionally, the electronic display may include measurement circuitry that measures a response characteristic of the illuminator in response to the reference electrical stimulus and generates temperature data indicative of the temperature of the illuminator based on the response characteristic.