公开(公告)号：WO2019060105A1

公开(公告)日：2019-03-28

申请号：PCT/US2018/048393

申请日：2018-08-28

Applicant: APPLE INC.

Inventor： ONO, Shinya ,  CHANG, Ting-kuo ,  ROUDBARI, Abbas, Jamshidi ,  LEE, Chien-ya ,  RYU, Jie, Won ,  LIN, Chin-wei ,  BRAHMA, Kingsuk ,  GHARGHI, Majid ,  RAD, Mohammad Reza, Esmaeili ,  YEH, Shin-hung ,  HATANAKA, Shingo ,  YANG, Shyuan ,  TSAI, Tsung-ting ,  RIEUTORT-LOUIS, Warren, S. ,  WANG, Yun

IPC: G09G3/20 ,  G09G3/3275

Abstract: A display may have rows and columns of pixels. Gate lines may be used to supply gate signals to rows of the pixels. Data lines may be used to supply data signals to columns of the pixels. The data lines may include alternating even and odd data lines. Data lines may be organized in pairs each of which includes one of the odd data lines and an adjacent one of the even data lines. Demultiplexer circuitry may be configured dynamically during data loading and pixel sensing operations. During data loading, data from display driver circuitry may be supplied, alternately to odd pairs of the data lines and even pairs of the data lines. During sensing, the demultiplexer circuitry may couple a pair of the even data lines to sensing circuitry in the display driver circuitry and then may couple a pair of the odd data lines to the sensing circuitry.

公开(公告)号：WO2019036125A1

公开(公告)日：2019-02-21

申请号：PCT/US2018/040622

申请日：2018-07-02

Applicant: APPLE INC.

Inventor： LIN, Chin-Wei ,  YANG, Shyuan ,  QIAN, Chuang ,  JAMSHIDI ROUDBARI, Abbas ,  CHANG, Ting-kuo

IPC: G09G3/3233

Abstract: A display may have an array of organic light-emitting diode display pixels operating at a low refresh rate. Each display pixel may have six thin-film transistors and one capacitor. One of the six transistors may serve as the drive transistor and may be compensated using the remaining five transistors and the capacitor. One or more on-bias stress operations may be applied before threshold voltage sampling to mitigate first frame dimming. Multiple anode reset and on-bias stress operations may be inserted during vertical blanking periods to reduce flicker and maintain balance and may also be inserted between successive data refreshes to improve first frame performance. Two different emission signals controlling each pixel may be toggled together using a pulse width modulation scheme to help provide darker black levels.

公开(公告)号：EP3345180A1

公开(公告)日：2018-07-11

申请号：EP17714119.9

申请日：2017-03-16

Applicant: Apple Inc.

Inventor： YU, Cheng-ho ,  LIN, Chin-Wei ,  YANG, Shyuan ,  CHANG, Ting-Kuo ,  TSAI,Tsung-Ting ,  RIEUTORT-LOUIS, Warren S. ,  CHANG, Shih-Chang ,  CHEN, Yu Cheng ,  ZHONG, John Z.

IPC: G09G3/3233 ,  G09G3/3266

CPC classification number: H01L27/3223 ,  G06F3/044 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0426 ,  G09G2300/0809 ,  G09G2310/0232 ,  G09G2320/0223 ,  G09G2320/0233 ,  H01L27/323 ,  H01L27/3276 ,  H01L2227/32

Abstract: A display may have an array of pixels. Display driver circuitry may supply data and control signals to the pixels. Each pixel may have seven transistors, a capacitor, and a light-emitting diode such as an organic light-emitting diode. The seven transistors may receive control signals using horizontal control lines. Each pixel may have first and second emission enable transistors that are coupled in series with a drive transistor and the light-emitting diode of that pixel. The first and second emission enable transistors may be coupled to a common control line or may be separately controlled so that on-bias stress can be effectively applied to the drive transistor. The display driver circuitry may have gate driver circuits that provide different gate line signals to different rows of pixels within the display. Different rows may also have different gate driver strengths and different supplemental gate line loading structures.