公开(公告)号：US10008172B2

公开(公告)日：2018-06-26

申请号：US14276146

申请日：2014-05-13

Applicant: APPLE INC.

Inventor： Yingxuan Li ,  Weijun Yao ,  Wei H. Yao ,  Kingsuk Brahma ,  Hyunwoo Nho

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/3648 ,  G09G3/3655 ,  G09G3/3696 ,  G09G2300/0426 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2320/0233 ,  G09G2320/0276 ,  G09G2320/029

Abstract: Devices and methods for reducing or eliminating image artifacts are provided. By way of example, a display panel includes a pixels including pixel electrodes configured to receive an image data signal, and common electrodes (VCOMs) configured to receive a common voltage signal. The display panel includes a source driver, which includes a first digital to analog converter (DAC) configured to generate a gamma voltage signal to provide a first adjustment to the image data signal, and a second DAC configured to generate an error correction voltage signal to provide a second adjustment to the image data signal. The second adjustment is configured to adjust the image data signal to compensate for an operational characteristic difference between row pixels and column pixels of the display panel. The source driver includes an output buffer to supply the image data signal to the pixel electrodes.

公开(公告)号：US20180090042A1

公开(公告)日：2018-03-29

申请号：US15694373

申请日：2017-09-01

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Hyunwoo Nho ,  Shengkui Gao ,  Jesse A. Richmond ,  Jie Won Ryu ,  Junhua Tan ,  Kingsuk Brahma ,  Mohammad B. Vahid Far ,  Sun-Il Chang ,  Yafei Bi

IPC: G09G3/00 ,  G09G3/20

CPC classification number: G09G3/006 ,  G06F3/041 ,  G09G3/20 ,  G09G3/2096 ,  G09G3/3225 ,  G09G2300/0413 ,  G09G2310/0291 ,  G09G2320/0295 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2330/06 ,  G09G2330/12

Abstract: Electronic displays, systems, and methods that perform display panel sensing are provided. An electronic device may include processing circuitry that generates image data based at least in part on display panel sensing feedback and an electronic display. The electronic display may display the image data on pixels coupled to one of several sense lines. There may be an odd number of sense lines with common electrical characteristics. The electronic display may obtain display panel sense feedback at least in part by differentially sensing each one of the sense lines with sense lines with common electrical characteristics with another one of the sense lines the common electrical characteristics.

公开(公告)号：US20180082620A1

公开(公告)日：2018-03-22

申请号：US15697132

申请日：2017-09-06

Applicant: Apple Inc.

Inventor： Sun-Il Chang ,  Hyunwoo Nho ,  Hung Sheng Lin ,  Junhua Tan ,  Jie Won Ryu ,  Kingsuk Brahma ,  Jesse A. Richmond ,  Mohammad B. Vahid Far ,  Yafei Bi

IPC: G09G3/00

CPC classification number: G09G3/006 ,  G09G3/2092 ,  G09G5/00 ,  G09G2320/041 ,  G09G2320/0693 ,  G09G2330/026

Abstract: Electronic devices and methods pertain to reducing artifacts resulting from a thermal profile preexisting a boot up of an electronic device are disclosed. Scanning driving circuitry of the electronic device scans at least a portion of one or more pixels of an active area of a display using a boot up scan before a boot up sequence of at least a portion of an electronic device completes. The results of the boot up scan are stored in local buffers and transferred to one or more processors upon connection to the one or more processors. The results of the boot up scan cause the one or more processors to modify image data to reduce or eliminate artifacts that may result during boot up due to thermal profiles or other parameters that may cause artifacts.

公开(公告)号：US09910533B2

公开(公告)日：2018-03-06

申请号：US14866797

申请日：2015-09-25

Applicant: Apple Inc.

Inventor： Manu Agarwal ,  Hopil Bae ,  Kingsuk Brahma

IPC: G06F3/041 ,  G09G3/00 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/044 ,  G09G3/00 ,  G09G3/2022 ,  G09G3/2096 ,  G09G2330/021 ,  G09G2340/0435

Abstract: Various timing schemes can be used to synchronizing display functions with touch and/or stylus sensing functions for devices including a variable refresh rate (VRR) display. In a continuous-touch mode, for example, extended blanking can result in frame judder due to mismatch or latency between reporting of sensing data and the display. To minimize these issues, sensing operations can reset to re-synchronize with the display operation, and unreported data from sensing scans can be discarded or ignored. In some examples, a display frame can be divided into two sub-frames, and a system can be configured to perform a touch sensing scan during the first sub-frame of a display frame. At the conclusion of extended blanking, the sensing operations can reset to re-synchronize with the display. The touch sensing scan can be completed in one intra-frame pause and can begin at the start of the display frame.

公开(公告)号：US20180005579A1

公开(公告)日：2018-01-04

申请号：US15275371

申请日：2016-09-24

Applicant: Apple Inc.

Inventor： Kingsuk Brahma ,  Mohammad B. Vahid Far

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2310/0251 ,  G09G2310/08 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/12 ,  H03M1/34 ,  H03M1/50

Abstract: An electronic device includes display circuitry with a source amplifier and a data line that drives signals provided by the source amplifier. Additionally, the display circuitry includes pixels, where each pixel includes a diode, and a scan thin-film-transistor (TFT) that selectively couples the pixels with the data line, based upon a scan control signal. Sensing circuitry of the electronic device includes a capacitor that is electrically coupled to the data line, wherein the capacitor is pre-charged by the source amplifier when the scan TFT is OFF and a sensing amplifier electrically coupled to the data line, providing a sensing output of both a diode voltage of the one or more pixels and a driving current of the one or more pixels, depending on the current operation of the sensing circuitry. Further, conversion circuitry converts the sensing output from an analog domain to a digital domain.

公开(公告)号：US09806608B2

公开(公告)日：2017-10-31

申请号：US15043405

申请日：2016-02-12

Applicant: Apple Inc.

Inventor： Weijun Yao ,  David A. Stronks ,  Hopil Bae ,  Kingsuk Brahma ,  Wei Hsin Yao ,  Yafei Bi ,  Yingxuan Li

IPC: G06F3/044 ,  H02M3/07 ,  G06F3/041 ,  G06F1/32 ,  H01L23/64

CPC classification number: H02M3/07 ,  G06F1/3262 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  H01L23/642

Abstract: A charge pump that can be configured to operate in a first mode and a second mode is disclosed. The charge pump can comprise a charging capacitor coupled to a first node and configured to transfer a first DC voltage to the first node. The charge pump can also comprise a first output node and a second output node coupled to the first node. During the first mode, the first output node can be configured to output a second DC voltage based on the first DC voltage, and the second output node can be configured to output a third DC voltage based on the first DC voltage. During the second mode, the first output node can be configured to output the second DC voltage, and the second output node can be configured to output an AC voltage, the AC voltage being offset by the third DC voltage.

公开(公告)号：US09489019B2

公开(公告)日：2016-11-08

申请号：US14293998

申请日：2014-06-02

Applicant: Apple Inc.

Inventor： Miguel C. Christophy ,  Silvio Grespan ,  Richard Hung Minh Dinh ,  John O. Ceideburg ,  Kingsuk Brahma

IPC: G02F1/1333 ,  G06F1/18 ,  G06F1/16 ,  H05K9/00

CPC classification number: G06F1/182 ,  G02F1/133308 ,  G02F2201/50 ,  G06F1/1656 ,  H05K9/0067

Abstract: An electrostatic discharge (ESD) blocking component is set forth for a computing device. The computing device can include a housing formed of non-conducting material and an overlaying display assembly supported by the housing. The display assembly can further include a plurality of display elements such as thin film transistors (TFTs) interconnected by corresponding metallic traces. The ESD block is used to block static charges associated with an ESD event so that essentially no ESD event related static charge is accumulated on the metallic traces thereby preventing ESD related damage to the plurality of TFTs.

Abstract translation: 为计算设备阐述了静电放电（ESD）阻挡部件。 计算设备可以包括由非导电材料形成的壳体和由壳体支撑的覆盖显示组件。 显示组件还可以包括多个显示元件，例如通过相应的金属迹线互连的薄膜晶体管（TFT）。 ESD块用于阻止与ESD事件相关的静电荷，使得基本上不会在金属迹线上积累ESD事件相关的静电荷，从而防止与多个TFT相关的ESD相关的损害。

公开(公告)号：US09311867B2

公开(公告)日：2016-04-12

申请号：US13890928

申请日：2013-05-09

Applicant: APPLE INC.

Inventor： Sang Y. Youn ,  Hopil Bae ,  David A. Stronks ,  Kingsuk Brahma ,  Taif A. Syed

IPC: G09G3/36

CPC classification number: G09G3/3611 ,  G09G2310/0297 ,  G09G2330/021

Abstract: The present disclosure relates to devices and methods for reducing power consumption of a display. One electronic display includes a first switch coupled between a first gate of a first transistor and a second gate of a second transistor to selectively connect the first gate to the second gate. The display includes a second switch coupled between the second gate of the second transistor and a third gate of a third transistor to selectively connect the second gate to the third gate. The display also includes driving circuitry that controls the first switch to connect the first gate to the second gate to share a first charge between the first and second gates. The driving circuitry also controls the second switch to connect the second gate to the third gate to share a second charge between the second and third gates. Accordingly, power consumption of the display may be reduced.

Abstract translation: 本公开涉及用于降低显示器的功耗的装置和方法。 一个电子显示器包括耦合在第一晶体管的第一栅极和第二晶体管的第二栅极之间的第一开关，以选择性地将第一栅极连接到第二栅极。 显示器包括耦合在第二晶体管的第二栅极和第三晶体管的第三栅极之间的第二开关，以选择性地将第二栅极连接到第三栅极。 显示器还包括控制第一开关以将第一栅极连接到第二栅极以共享第一和第二栅极之间的第一电荷的驱动电路。 驱动电路还控制第二开关以将第二栅极连接到第三栅极，以在第二和第三栅极之间共享第二电荷。 因此，可以减少显示器的功耗。