公开(公告)号：US11647650B2

公开(公告)日：2023-05-09

申请号：US17475756

申请日：2021-09-15

Applicant: Apple Inc.

Inventor： Jaein Choi ,  Hairong Tang ,  Gloria Wong ,  Sunggu Kang ,  Younggu Lee ,  Gwanwoo Park ,  Chun-Yao Huang ,  Andrew Lin ,  Cheuk Chi Lo ,  Enkhamgalan Dorjgotov ,  Michael Slootsky ,  Rui Liu ,  Wendi Chang ,  Cheng Chen

IPC: H10K59/122 ,  H10K50/19

CPC classification number: H10K59/122 ,  H10K50/19

Abstract: An organic light-emitting diode (OLED) display may have an array of organic light-emitting diode pixels that each have OLED layers interposed between a cathode and an anode. Voltage may be applied to the anode of each pixel to control the magnitude of emitted light. The conductivity of the OLED layers may allow leakage current to pass between neighboring anodes in the display. To reduce leakage current and the accompanying cross-talk in a display, the pixel definition layer may disrupt continuity of the OLED layers. The pixel definition layer may have an undercut to disrupt continuity of some but not all of the OLED layers. The undercut may be defined by three discrete portions of the pixel definition layer. The undercut may result in a void that is interposed between different portions of the OLED layers to break a leakage path formed by the OLED layers.

公开(公告)号：US11527209B2

公开(公告)日：2022-12-13

申请号：US17196759

申请日：2021-03-09

Applicant: Apple Inc.

Inventor： Bilin Wang ,  Tien-Chien Kuo ,  Kanghoon Jeon ,  Chun-Yao Huang

IPC: G09G3/30 ,  G09G3/3291 ,  G09G5/397 ,  G09G3/36

Abstract: A display system may include a memory external to a pixel that stores a first digital data value, a memory internal to the pixel that stores a second digital data signal, where a combination of the first digital data signal and the second digital data signal may indicate a target gray level assigned to the pixel for a particular image frame. The pixel may be driven for a first duration of time according to the first digital data signal and for a second duration of time according to the second digital data signal.

公开(公告)号：US20210142736A1

公开(公告)日：2021-05-13

申请号：US17150818

申请日：2021-01-15

Applicant: Apple Inc.

Inventor： Cheng Chen ,  Jason C. Sauers ,  Fletcher R. Rothkopf ,  David W. Lum ,  Chun-Yao Huang ,  Enkhamgalan Dorjgotov ,  Graham B. Myhre ,  Bennett S. Wilburn ,  Paolo Sacchetto ,  Shih Chang Chang ,  Wonjae Choi ,  Cheuk Chi Lo

IPC: G09G3/3266 ,  G09G3/3275 ,  G09G3/3225 ,  G09G3/20 ,  G09G3/36

Abstract: An electronic device such as a head-mounted device may have displays. The display may have regions of lower and higher resolution to reduce data bandwidth and power consumption for the display while preserving satisfactory image quality. Data lines may be shared by lower and higher resolution portions of a display or different portions of a display with different resolutions may be supplied with different numbers of data lines. Data line length may be varied in transition regions between lower resolution and higher resolution portions of a display to reduce visible discontinuities between the lower and higher resolution portions. The lower and higher resolution portions of the display may be dynamically adjusted using dynamically adjustable gate driver circuitry and dynamically adjustable data line driver circuitry.

公开(公告)号：US10964235B1

公开(公告)日：2021-03-30

申请号：US16428375

申请日：2019-05-31

Applicant: Apple Inc.

Inventor： Cheng-Ho Yu ,  Xiaofeng Wang ,  ByoungSuk Kim ,  Chun-Yao Huang ,  Fenghua Zheng ,  Hopil Bae ,  Patrick B. Bennett ,  Steven M. Scardato ,  Yi Huang

IPC: G09F9/302 ,  G06F1/16

Abstract: An electronic device may include a display. The display includes display driver circuitry for driving data lines routed across the display. The electronic device may have a recessed device housing region, where at least some of the data lines are routed around the recessed region. The data lines being routed around the recessed region may be formed in at least two different metal routing layers. The electronic device may further include additional display driver circuitry for driving data lines from another peripheral housing edge to obviate the need to route around the recessed region. The data lines from the two display driver circuitries can be disconnected at random locations or can be interlaced to achieve spatial interleaving. The display driver circuitry may include demultiplexing circuitry having smaller switches coupled in parallel with larger demultiplexer routing switches to reduce voltage kick and charge injection.

公开(公告)号：US10446116B2

公开(公告)日：2019-10-15

申请号：US15673138

申请日：2017-08-09

Applicant: Apple Inc.

Inventor： Sheng Zhang ,  Chaohao Wang ,  Cheuk Chi Lo ,  Chun-Yao Huang ,  Howard Tang ,  Paolo Sacchetto

IPC: G09G5/10 ,  G01K13/00 ,  G01K7/34 ,  G09G3/20 ,  G01K1/02 ,  G01K7/01 ,  G01K7/18 ,  G06F3/044 ,  G09G3/36 ,  G09G3/3225 ,  G09G3/34

Abstract: An apparatus is disclosed. In some examples, the apparatus comprises a display panel comprising a plurality of display pixels. In some examples, the apparatus comprises a plurality of temperature sensors disposed at different portions the display panel, wherein the plurality of temperature sensors comprise ratioed pairs of thin film transistors and the ratioed pairs of thin film transistors are formed on the display panel. In some examples, the apparatus comprises control circuitry for changing illumination properties of the plurality of display pixels based on changes is temperature detected by a proximate temperature sensor of the plurality of temperature sensors. In some examples, the ratioed pairs of thin film transistors are operated in a sub-threshold mode.

公开(公告)号：US10417964B1

公开(公告)日：2019-09-17

申请号：US15947687

申请日：2018-04-06

Applicant: Apple Inc.

Inventor： Cheuk Chi Lo ,  Chun-Ming Tang ,  Chun-Yao Huang ,  Ivan Knez

IPC: G09G5/00 ,  G09G3/3233 ,  H01L27/12 ,  H01L27/32 ,  H01L27/146

Abstract: A display with an array of pixels may be provided with redundant pixel control circuits. Switching circuitry may be used to couple pixel control circuits to light-emitting diodes for the pixels. The switching circuitry can be configured using control signals from non-volatile memory in decoder circuitry such as thermometer code decoder circuitry. During manufacturing, the display may be inspected for defects. Defective pixel control circuits can be replaced with redundant pixel control circuits so that the display operates satisfactory. The decoder circuitry may supply control signals to the switching circuitry to switch redundant pixel control circuitry into use while bypassing defective pixel control circuits.

公开(公告)号：US10345972B2

公开(公告)日：2019-07-09

申请号：US15179763

申请日：2016-06-10

Applicant: Apple Inc.

Inventor： Szu-Hsien Lee ,  Byung Duk Yang ,  Chun-Yao Huang ,  Kyung-Wook Kim ,  Shih-Chang Chang

IPC: G06F3/044 ,  G06F3/041

Abstract: A touch screen. In some examples, the touch screen can comprise a first element coupled to a first sense connection, and a second element coupled to a second sense connection. In some examples, the first and second sense connections can be configured such that a load presented by the first sense connection and the first element is substantially equal to a load presented by the second sense connection and the second element. In some examples, the first and second sense connections can comprise detour routing configured such that a resistance of the first sense connection is substantially equal to a resistance of the second sense connection. In some examples, the first and second sense connections can be coupled to dummy routing configured such that a first capacitance presented by the first sense connection is substantially equal to a second capacitance presented by the second sense connection.

公开(公告)号：US20190206321A1

公开(公告)日：2019-07-04

申请号：US16325236

申请日：2017-08-10

Applicant: Apple Inc.

Inventor： Cheuk Chi Lo ,  Chin-Wei Lin ,  Chun-Yao Huang ,  Shih Chang Chang

IPC: G09G3/3233 ,  G09G3/3291 ,  H01L27/32

CPC classification number: G09G3/3233 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2300/0439 ,  G09G2300/0819 ,  G09G2300/0866 ,  G09G2310/06 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/045 ,  G09G2320/0693 ,  G09G2330/026 ,  H01L27/3276

Abstract: A display has rows and columns of pixels (22). A data line (Dn) in each column provides image data signals to the pixels of that column. Each row has first and second control lines (select[m], monitor[m]) coupled to the gates of first and second respective transistors (SE, MO) in each pixel. A third transistor in each pixel serves as a drive transistor (DR) and is coupled in series with a light-emitting diode (30) between positive and ground power supply voltages (VDD, VSS). A display driver circuitry in the display characterizes each of the light-emitting diodes in a column using the data line in an adjacent column from that light-emitting diode. Each of the drive transistors in a column is characterized using the data line in that column and the data line in an adjacent column.

公开(公告)号：US20190172399A1

公开(公告)日：2019-06-06

申请号：US16323751

申请日：2017-08-14

Applicant: Apple Inc.

Inventor： Cheng Chen ,  Jason C. Sauers ,  Fletcher R. Rothkopf ,  David W. Lum ,  Chun-Yao Huang ,  Enkhamgalan Dorjgotov ,  Graham B. Myhre ,  Bennett S. Wilburn ,  Paolo Sacchetto ,  Shih Chang Chang ,  Wonjae Choi ,  Cheuk Chi Lo

IPC: G09G3/3266 ,  G09G3/3275 ,  G09G3/36

Abstract: An electronic device such as a head-mounted device may have displays. The display may have regions of lower (L) and higher (M, H) resolution to reduce data bandwidth and power consumption for the display while preserving satisfactory image quality. Data lines may be shared by lower and higher resolution portions of a display or different portions of a display with different resolutions may be supplied with different numbers of data lines. Data line length may be varied in transition regions between lower resolution and higher resolution portions of a display to reduce visible discontinuities between the lower and higher resolution portions. The lower and higher resolution portions of the display may be dynamically adjusted using dynamically adjustable gate driver circuitry and dynamically adjustable data line driver circuitry.

公开(公告)号：US10288963B2

公开(公告)日：2019-05-14

申请号：US15643367

申请日：2017-07-06

Applicant: Apple Inc.

Inventor： Patrick B. Bennett ,  Kwang Soon Park ,  Chun-Yao Huang ,  Byung Duk Yang ,  Shih Chang Chang

IPC: G06F3/038 ,  G09G5/00 ,  G02F1/1362 ,  H01L27/12 ,  G09G3/20 ,  G02F1/1345

Abstract: A display may have an array of pixels arranged in rows and columns. Display driver circuitry may be provided along an edge of the display. Data lines that are associated with columns of the pixels may be used to distribute data from the display driver circuitry to the pixels. Gate lines in the display may each have a horizontal straight portion that extends along a respective row of the pixels and may each have one or more non-horizontal segments such as zigzag segments. The non-horizontal portion of each gate line may be connected to the horizontal straight portion of the gate line by a via. The non-horizontal portions may each have portions that are overlapped by portions of the data lines. Dummy gate line structures may be provided on the display that are not coupled to any of the pixels in the display.