公开(公告)号：US20180322827A1

公开(公告)日：2018-11-08

申请号：US15711585

申请日：2017-09-21

Applicant: Apple Inc.

Inventor： Sheng ZHANG ,  Chaohao WANG ,  Paolo SACCHETTO ,  Paul S. DRZAIC ,  Wei CHEN ,  Wei H. YAO

IPC: G09G3/3241 ,  G09G3/20

Abstract: A display device may include a display having a plurality of pixels. The display device may also include a replica pixel circuit having a switching device configured to output a first current based on a received voltage, a light-emitting diode (LED) configured to illuminate to a first gray level based on the first current output by the switching device, and current mirror circuitry configured to generate a second current that mirrors the first current. In addition, the replica pixel circuit may include a current source configured to output a reference current based on a voltage value that corresponds to the received voltage, comparator circuitry configured to determine a difference between the second current and the reference current, and voltage adjustment circuitry configured to adjust a source voltage output provided to the plurality of pixels based on the difference.

公开(公告)号：US20160042707A1

公开(公告)日：2016-02-11

申请号：US14472272

申请日：2014-08-28

Applicant: Apple Inc.

Inventor： Chaohao WANG ,  Szu-Hsien Lee ,  Paolo SACCHETTO ,  Shih Chang Chang ,  Chun-Yao Huang ,  Paul S. DRZAIC

IPC: G09G3/36 ,  G09G3/34

CPC classification number: G09G3/3266 ,  G09G3/2044 ,  G09G3/3225 ,  G09G3/3648 ,  G09G2310/04 ,  G09G2320/0247 ,  G09G2320/0673 ,  G09G2330/021 ,  G09G2340/0435

Abstract: This application relates to methods and apparatus for refreshing a display device at various frequencies. Specifically, multiple areas of the display device can be refreshed concurrently at different frequencies. In this way, when static content is being displayed in certain areas of the display device, those certain areas can be refreshed at a lower rate than areas displaying dynamic content such as video or animation. By refreshing at lower rates, the energy consumed by the display device and subsystems associated with the display device can be reduced. Additionally, processes for reducing flicker when refreshing the display device at different refresh rates are disclosed herein.

公开(公告)号：US20180047342A1

公开(公告)日：2018-02-15

申请号：US15691691

申请日：2017-08-30

Applicant: Apple Inc.

Inventor： Chaohao WANG ,  Szu-Hsien LEE ,  Paolo SACCHETTO ,  Shih Chang CHANG ,  Chun-Yao HUANG ,  Paul S. DRZAIC

IPC: G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3266 ,  G09G3/2044 ,  G09G3/3225 ,  G09G3/3648 ,  G09G2310/04 ,  G09G2320/0247 ,  G09G2320/0673 ,  G09G2330/021 ,  G09G2340/0435

Abstract: This application relates to methods and apparatus for refreshing a display device at various frequencies. Specifically, multiple areas of the display device can be refreshed concurrently at different frequencies. In this way, when static content is being displayed in certain areas of the display device, those certain areas can be refreshed at a lower rate than areas displaying dynamic content such as video or animation. By refreshing at lower rates, the energy consumed by the display device and subsystems associated with the display device can be reduced. Additionally, processes for reducing flicker when refreshing the display device at different refresh rates are disclosed herein.

公开(公告)号：US20200258454A1

公开(公告)日：2020-08-13

申请号：US16865213

申请日：2020-05-01

Applicant: Apple Inc.

Inventor： Chaohao WANG ,  Szu-Hsien LEE ,  Paolo SACCHETTO ,  Shih Chang CHANG ,  Chun-Yao HUANG ,  Paul S. DRZAIC

IPC: G09G3/3266 ,  G09G3/20

Abstract: This application relates to methods and apparatus to refresh a display device at various frequencies. Specifically, multiple areas of the display device may be refreshed concurrently at different frequencies. In this way, when static content is being displayed in certain areas of the display device, those certain areas can be refreshed at a lower rate than areas displaying dynamic content such as video or animation. By refreshing at lower rates, the energy consumed by the display device and subsystems associated with the display device can be reduced. Additionally, processes for reducing flicker when refreshing the display device at different refresh rates are disclosed herein.

公开(公告)号：US20200103981A1

公开(公告)日：2020-04-02

申请号：US16147384

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Yung-Yu HSU ,  Mingjing HA ,  Zhiyuan SUN ,  Paul S. DRZAIC ,  Anuranjini PRAGADA ,  George Ho Yin MAK ,  Antonio Y. LAYON HALUN ,  Wesley W. ZUBER

IPC: G06F3/02 ,  H03K17/96 ,  H01H13/704 ,  H01H13/7065

Abstract: Touch sensitive mechanical keyboards and processes for detecting touch events and key depressions on the touch sensitive mechanical keyboard are provided. The touch sensitive mechanical keyboard can include a set of individually depressible mechanical keys having a touch sensitive surface. A touch sensor layer can be disposed on top of a key mechanism and flexible interconnections provided between key segments of the touch sensor layer can allow for depression of the key mechanism of individual keys. In some examples, the flexible interconnections can be formed by patterning a spring-like structure into the touch sensor layer. In some examples, the touch sensor layer can be transparent or include openings to allow a backlight to shine through. In some examples, addressable LED backlighting with buckling interconnects can also be provided to illuminate keycaps of the mechanical keyboard.