公开(公告)号：US10360862B2

公开(公告)日：2019-07-23

申请号：US15980437

申请日：2018-05-15

Applicant: Apple Inc.

Inventor： Shin-Hung Yeh ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang

IPC: G09G3/36 ,  G02F1/1362 ,  G09G3/00 ,  H01L27/12

Abstract: A display may have an array of pixels such as liquid crystal display pixels. The display may include short pixel rows that span only partially across the display and full-width pixel rows that span the width of the display. The gate lines coupled to the short pixel rows may extend into the inactive area of the display. Supplemental gate line loading structures may be located in the inactive area of the display to increase loading on the gate lines that are coupled to short pixel rows. The supplemental gate line loading structures may include data lines and doped polysilicon that overlap the gate lines in the inactive area. In displays that combine display and touch functionality into a thin-film transistor layer, supplemental loading structures may be used in the inactive area to increase loading on common voltage lines that are coupled to short rows of common voltage pads.

公开(公告)号：US20190221624A1

公开(公告)日：2019-07-18

申请号：US16364447

申请日：2019-03-26

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Stephen S. Poon ,  Warren S. Rieutort-Louis ,  Cheng-Ho Yu ,  ChoongHo Lee ,  Doh-Hyoung Lee ,  Ting-Kuo Chang ,  Tsung-Ting Tsai ,  Vasudha Gupta ,  Younggu Lee

IPC: H01L27/32 ,  G09G3/00 ,  H01L51/52 ,  G09G3/3291 ,  G09G3/3258 ,  G09G3/3233

CPC classification number: H01L27/3248 ,  G09G3/006 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2310/0297 ,  H01L27/3246 ,  H01L27/3276 ,  H01L27/3279 ,  H01L51/5228

Abstract: An organic light-emitting diode display may have thin-film transistor circuitry formed on a substrate. The display and substrate may have rounded corners. A pixel definition layer may be formed on the thin-film transistor circuitry. Openings in the pixel definition layer may be provided with emissive material overlapping respective anodes for organic light-emitting diodes. A cathode layer may cover the array of pixels. A ground power supply path may be used to distribute a ground voltage to the cathode layer. The ground power supply path may be formed from a metal layer that is shorted to the cathode layer using portions of a metal layer that forms anodes for the diodes, may be formed from a mesh shaped metal pattern, may have L-shaped path segments, may include laser-deposited metal on the cathode layer, and may have other structures that facilitate distribution of the ground power supply.

公开(公告)号：US10249254B2

公开(公告)日：2019-04-02

申请号：US15007016

申请日：2016-01-26

Applicant: Apple Inc.

Inventor： Kasra Omid-Zohoor ,  Hyunwoo Nho ,  Keitaro Yamashita ,  Majid Gharghi ,  Sarath Chandrasekhar Venkatesh Kumar ,  Ting-Kuo Chang ,  Abbas Jamshidi Roudbari

IPC: G09G5/00 ,  G09G3/36

Abstract: Methods and devices useful in discharging an aberrant charge on the VCOM of an electronic display and harvesting energy from the VCOM of the electronic display are provided. By way of example, a method may include supplying an activation signal to an active switching device of an electronic display. The active switching device is configured to discharge an aberrant charge on a common electrode of the electronic display. The method further includes discharging the aberrant charge by way of the active switching device. Discharging the aberrant charge comprises preventing a possible occurrence of image artifacts from becoming apparent on the electronic display.

公开(公告)号：US20190088207A1

公开(公告)日：2019-03-21

申请号：US16134802

申请日：2018-09-18

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Majid Gharghi ,  Mohammad Reza Esmaeili Rad ,  Yun Wang ,  Jie Won Ryu ,  Kingsuk Brahma ,  Shingo Hatanaka ,  Shinya Ono ,  Ting-Kuo Chang

IPC: G09G3/3266 ,  G09G3/3233

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：US20190073976A1

公开(公告)日：2019-03-07

申请号：US15980437

申请日：2018-05-15

Applicant: Apple Inc.

Inventor： Shin-Hung Yeh ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang

IPC: G09G3/36 ,  G09G3/00 ,  H01L27/12 ,  G02F1/1362

CPC classification number: G09G3/3666 ,  G02F1/136286 ,  G02F2201/121 ,  G09G3/002 ,  G09G3/3648 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2300/0478 ,  G09G2310/0264 ,  G09G2320/0223 ,  H01L27/124

Abstract: A display may have an array of pixels such as liquid crystal display pixels. The display may include short pixel rows that span only partially across the display and full-width pixel rows that span the width of the display. The gate lines coupled to the short pixel rows may extend into the inactive area of the display. Supplemental gate line loading structures may be located in the inactive area of the display to increase loading on the gate lines that are coupled to short pixel rows. The supplemental gate line loading structures may include data lines and doped polysilicon that overlap the gate lines in the inactive area. In displays that combine display and touch functionality into a thin-film transistor layer, supplemental loading structures may be used in the inactive area to increase loading on common voltage lines that are coupled to short rows of common voltage pads.

公开(公告)号：US10192938B2

公开(公告)日：2019-01-29

申请号：US15919057

申请日：2018-03-12

Applicant: Apple Inc.

Inventor： Cheng-Ho Yu ,  Chin-Wei Lin ,  Shyuan Yang ,  Ting-Kuo Chang ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis ,  Shih-Chang Chang ,  Yu Cheng Chen ,  John Z. Zhong

IPC: H01L27/32 ,  G09G3/3233 ,  G09G3/3266 ,  G06F3/044

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.

公开(公告)号：US20170365214A1

公开(公告)日：2017-12-21

申请号：US15431337

申请日：2017-02-13

Applicant: Apple Inc.

Inventor： Tsung-Ting Tsai ,  Shinya Ono ,  Chin-Wei Lin ,  Ting-Kuo Chang

IPC: G09G3/3233 ,  H01L51/52 ,  G09G3/3266 ,  H01L27/32

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/041 ,  G09G2320/045 ,  H01L27/3279

Abstract: An organic light-emitting diode display may contain an array of display pixels. Each display pixel may have a respective organic light-emitting diode that is controlled by a drive transistor. At low temperatures, it may be necessary to increase the amount of current through an organic light-emitting diode to achieve a desired luminance level. In order to increase the current through the light-emitting diode, the ground voltage level may be lowered. However, this may lead to thin-film transistors within the pixel leaking, which may result in undesirable display artifacts such as bright dots being displayed in a dark image. In order to prevent leakage in the transistors, the transistors may be coupled to separate reference voltage supplies or separate control lines. Additionally, the transistors may be positioned to minimize leakage even at low ground voltage levels.

公开(公告)号：US20170365213A1

公开(公告)日：2017-12-21

申请号：US15246345

申请日：2016-08-24

Applicant: Apple Inc.

Inventor： Warren S. Rieutort-Louis ,  Keitaro Yamashita ,  Tsung-Ting Tsai ,  Yun Wang ,  Ting-Kuo Chang ,  Cheng-Ho Yu ,  Shinya Ono

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/041 ,  G09G2320/045

Abstract: An organic light-emitting diode display may contain an array of display pixels. Each display pixel may have a respective organic light-emitting diode that is controlled by a drive transistor. At low temperatures, it may be necessary to increase the amount of current through an organic light-emitting diode to achieve a desired luminance level. In order to increase the current through the light-emitting diode, the ground voltage level may be lowered. However, this may lead to thin-film transistors within the pixel leaking, which may result in undesirable display artifacts such as bright dots being displayed in a dark image. In order to prevent leakage in the transistors, the transistors may be coupled to separate reference voltage supplies or separate control lines. Additionally, the transistors may be positioned to minimize leakage even at low ground voltage levels.

公开(公告)号：US09685469B2

公开(公告)日：2017-06-20

申请号：US14678819

申请日：2015-04-03

Applicant: Apple Inc.

Inventor： Jungbae Kim ,  Kyung-Wook Kim ,  Shih Chang Chang ,  Ting-Kuo Chang ,  Ton-Yong Wang

IPC: G02F1/136 ,  H01L27/12 ,  H01L29/786 ,  H01L27/32 ,  H01L29/66 ,  H01L21/265 ,  H01L29/49 ,  G02F1/1345 ,  G02F1/1362

CPC classification number: H01L27/1248 ,  G02F1/13454 ,  G02F1/1362 ,  H01L21/26513 ,  H01L27/1225 ,  H01L27/1229 ,  H01L27/1251 ,  H01L27/1259 ,  H01L27/3262 ,  H01L29/4908 ,  H01L29/4916 ,  H01L29/66757 ,  H01L29/66969 ,  H01L29/78675 ,  H01L29/7869

Abstract: A display may have an array of pixels controlled by display driver circuitry. The pixels may have pixel circuits. In liquid crystal display configurations, each pixel circuit may have an electrode that applies electric fields to an associated portion of a liquid crystal layer. In organic light-emitting diode displays, each pixel circuit may have a drive transistor that applies current to an organic light-emitting diode in the pixel circuit. The pixel circuits and display driver circuitry may have thin-film transistor circuitry that includes transistor such as silicon transistors and semiconducting-oxide transistors. Semiconducting-oxide transistors and silicon transistors may be formed on a common substrate. Semiconducting-oxide transistors may have polysilicon layers with doped regions that serve as gates. Semiconducting-oxide channel regions overlap the gates. Transparent conductive oxide and metal may be used to form source-drain terminals that are coupled to opposing edges of the semiconducting oxide channel regions.

公开(公告)号：US20160380112A9

公开(公告)日：2016-12-29

申请号：US13801261

申请日：2013-03-13

Applicant: APPLE INC.

Inventor： Cheng-Ho Yu ,  Young Bae Park ,  Shih Chang Chang ,  Ting-Kuo Chang ,  Shang-Chih Lin

IPC: H01L29/786 ,  H01L29/66

CPC classification number: H01L29/78651 ,  H01L27/1288 ,  H01L29/6675 ,  H01L29/78621 ,  H01L29/78645

Abstract: A method is provided for fabricating thin-film transistors (TFTs) for an LCD having an array of pixels. The method includes depositing a first photoresist layer over a portion of a TFT stack. The TFT stack includes a conductive gate layer, and a semiconductor layer. The method also includes doping the exposed semiconductor layer with a first doping dose. The method further includes etching a portion of the conductive gate layer to expose a portion of the semiconductor layer, and doping the exposed portion of the semiconductor layer with a second doping dose. The method also includes removing the first photoresist layer, and depositing a second photoresist layer over a first portion of the doped semiconductor layer in an active area of the pixels to expose a second portion of the doped semiconductor layer in an area surrounding the active area. The method further includes doping the second portion of the doped semiconductor layer with a third doping dose, the first dose being higher than the second dose and the third dose.

Abstract translation: 提供了一种制造用于具有像素阵列的LCD的薄膜晶体管（TFT）的方法。 该方法包括在TFT堆叠的一部分上沉积第一光致抗蚀剂层。 TFT堆叠包括导电栅极层和半导体层。 该方法还包括以第一掺杂剂量掺杂暴露的半导体层。 该方法还包括蚀刻导电栅极层的一部分以暴露半导体层的一部分，并以第二掺杂剂量掺杂半导体层的暴露部分。 该方法还包括去除第一光致抗蚀剂层，以及在像素的有源区域中在掺杂半导体层的第一部分上沉积第二光致抗蚀剂层，以在围绕有源区域的区域中暴露掺杂半导体层的第二部分。 该方法还包括以第三掺杂剂量掺杂掺杂半导体层的第二部分，第一剂量高于第二剂量和第三剂量。