公开(公告)号：US10809847B2

公开(公告)日：2020-10-20

申请号：US16030654

申请日：2018-07-09

Applicant: Apple Inc.

Inventor： Vasudha Gupta ,  Shih Chang Chang ,  Young-Bae Park ,  Ting-Kuo Chang

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3208 ,  G09G3/3233 ,  G09G3/34 ,  H01L27/32

Abstract: A touch screen having touch circuitry integrated into a display pixel stackup. The touch screen can include a transistor layer, an LED layer and a first layer. The first layer can operate as an LED cathode during a display phase and as touch circuitry during a touch sensing phase. The transistor layer can be at least partially utilized for transitioning between the display phase and the touch sensing phase. The touch screen can be fabricated to reduce or eliminate damage to the LED layer.

公开(公告)号：US10409118B1

公开(公告)日：2019-09-10

申请号：US15498356

申请日：2017-04-26

Applicant: Apple Inc.

Inventor： Pei-En Chang ,  Szu-Hsien Lee ,  Hsin-Ying Chiu ,  Chun-Yao Huang ,  Kyung Wook Kim ,  Shih Chang Chang ,  Hossein Nemati

IPC: G02F1/1343 ,  G02F1/1335 ,  G02F1/1333 ,  H01L27/32 ,  G02F1/133

Abstract: An electronic device may have a housing and a display in the housing. The display may have one or more curved edges such as curved edges associated with rounded corners in the display and housing. The display may have an array of pixels. The display may include full-strength pixels and may have a band of antialiasing pixels having selectively reduced strengths to visually smooth content displayed along the curved edges. The pixels may be organic light-emitting diode pixels, liquid crystal display pixels, or other display pixels. Organic light-emitting diode pixels may have drive transistors and associated organic light-emitting diodes. Selectively elevated series or opaque light blocking structures of selectively reduced areas may be used to selectively reduce the strength of the antialiasing pixels. Liquid crystal display pixels may include electrodes of different shapes and/or opaque layer openings of different sizes to form antialiasing pixels in desired patterns.

公开(公告)号：US10381381B1

公开(公告)日：2019-08-13

申请号：US15274546

申请日：2016-09-23

Applicant: Apple Inc.

Inventor： Minhyuk Choi ,  Bhadrinarayana Lalgudi Visweswaran ,  Cheng Chen ,  Chin-Wei Lin ,  Meng-Huan Ho ,  Rui Liu ,  Shih Chang Chang ,  Soojin Park ,  Sarfaraz Moh ,  Jungmin Lee ,  John Z. Zhong

IPC: H01L27/12 ,  H01L31/12

Abstract: A display may have an array of pixels with light-emitting diodes that emit light to form images. The display may have a substrate with thin-film transistor circuitry for supplying signals to the light-emitting diodes. Anodes may be formed on the thin-film transistor circuitry, emissive material may be formed on the anodes, and a cathode layer may overlap the anodes. During operation, currents may flow between the anodes and the cathode layer to illuminate the diodes. An array of electrical components such as an array of light sensors in an integrated circuit may be mounted under the substrate. An array of corresponding light transmitting windows may be formed in the display each of which may allow light to pass through the display to a corresponding one of the light sensors. Light transmitting windows may be formed by patterning the cathode layer and supplying the windows with antireflection layers.

公开(公告)号：US10186187B2

公开(公告)日：2019-01-22

申请号：US14687081

申请日：2015-04-15

Applicant: Apple Inc.

Inventor： Tsung-Ting Tsai ,  Chin-Wei Lin ,  Shih Chang Chang

IPC: G09G3/20 ,  G09G3/32 ,  G09G3/3266 ,  G09G3/3258 ,  G09G3/3233

Abstract: A display may have an array of pixels arranged in rows and columns. Display driver circuitry may load data into the pixels via data lines that extend along the columns. The display driver circuitry may include gate driver circuitry that supplies horizontal control signals to rows of the pixels. The horizontal control signals may include emission enable signals for controlling emission enable transistors and scan signals for controlling switching transistors. During an emission phase of operation for the display, the emission enable signal may be pulse-width modulated by the emission control gate driver circuits in the gate driver circuitry to control the output of the light-emitting diodes. The emission control gate driver circuits may be controlled using an emission start signal and a pair of two-phase clocks.

公开(公告)号：US10037738B2

公开(公告)日：2018-07-31

申请号：US14862071

申请日：2015-09-22

Applicant: Apple Inc.

Inventor： Rungrot Kitsomboonloha ,  Chun-Yao Huang ,  Kyung Wook Kim ,  Shih Chang Chang ,  Szu-Hsien Lee

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

CPC classification number: G09G3/3674 ,  G09G3/20 ,  G09G3/3225 ,  G09G3/3648 ,  G09G2300/0408 ,  G09G2310/0267 ,  G09G2310/0286 ,  G09G2310/0291

Abstract: A display is provided that includes an array of display pixels and gate driver circuitry for providing data and gate line signals to the display pixels. Gate driver circuitry may include gate driver circuits that generate the gate line signals. A gate driver circuit may include at least a buffer transistor, a bootstrapping capacitor coupled to the buffer transistor, a pulldown transistor coupled in series with the buffer transistor, and an isolation transistor coupled to the gate of the pulldown transistor. The buffer transistor may directly receive a first clock signal, whereas the isolation transistor may directly receive a second clock signal that is complementary to the first clock signal. The pulldown transistor is substantially larger than the buffer transistor. The buffer transistor is substantially larger than the isolation transistor. Configured as such, clock loading is minimized while the pulldown transistor is sized to provide the desired fall time performance.

公开(公告)号：US09996175B2

公开(公告)日：2018-06-12

申请号：US14550686

申请日：2014-11-21

Applicant: Apple Inc.

Inventor： Steven P. Hotelling ,  Marduke Yousefpor ,  Shih Chang Chang

IPC: G06F3/041 ,  G06F1/32 ,  G06F3/044 ,  G09G3/36

CPC classification number: G06F3/041 ,  G06F1/3218 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G09G3/3648 ,  G09G3/3666 ,  G09G2300/0809

Abstract: A circuit for switching an LCD between display and touch modes is disclosed. The circuit can include one or more switches configured to switch one or more drive, sense, and data lines in LCD pixels according to the mode. During touch mode, the circuit switches can be configured to switch one or more drive lines to receive stimulation signals, one or more sense lines to transmit touch signals, and one or more data lines to transmit residual data signals. During display mode, the circuit switches can be configured to switch one or more drive lines and sense lines to receive common voltage signals and one or more data lines to receive data signals. The circuit can be formed around the border of the LCD chip or partially or fully on a separate chip.

公开(公告)号：US09984638B2

公开(公告)日：2018-05-29

申请号：US14828849

申请日：2015-08-18

Applicant: Apple Inc.

Inventor： Byung Duk Yang ,  Kyung Wook Kim ,  Shih Chang Chang ,  Young-Jik Jo

IPC: G09G3/36

CPC classification number: G09G3/3648 ,  G09G3/3611 ,  G09G2300/023 ,  G09G2320/103 ,  G09G2340/0435

Abstract: A display may have a first stage such as a color liquid crystal display stage and a second stage such as a monochromatic liquid crystal display stage that are coupled in tandem so that light from a backlight passes through both stages. The first (upper) stage may be a high resolution display panel that is operated at a first refresh rate while the second (lower) stage is a low resolution display panel that is operated at a second refresh rate that is greater than the first refresh rate. In particular, the second stage may be configured to provide localized dimming that is synchronized to one or more moving objects in the video frames to be displayed to help reduce the perceived motion blur. The localized dimming may be provided via insertion of a black image portion that only overlaps with the moving objects, a blanking row that tracks the moving objects, a black frame, etc.

公开(公告)号：US09940873B2

公开(公告)日：2018-04-10

申请号：US14535604

申请日：2014-11-07

Applicant: Apple Inc.

Inventor： Vasudha Gupta ,  Chin-Wei Lin ,  Shih Chang Chang ,  Tsung-Ting Tsai ,  Young Bae Park

IPC: G09G5/10 ,  G09G3/32 ,  G09G3/3233 ,  G09G3/3225 ,  G09G3/3266 ,  G11C19/18 ,  G11C19/28 ,  G09G3/20 ,  H03K5/15

CPC classification number: G09G3/3233 ,  G09G3/2011 ,  G09G3/2014 ,  G09G3/2081 ,  G09G3/3225 ,  G09G3/3266 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2330/028 ,  G09G2360/16 ,  G11C19/184 ,  G11C19/28 ,  H03K5/15093

Abstract: An organic light-emitting diode display may have an array of pixel circuits. Each pixel circuit may contain an organic light-emitting diode that emits light, a drive transistor that controls current flow through the diode, and additional transistors such as switching transistors for loading data into the pixel circuit and emission transistors for enabling and disabling current flow through the drive transistor and diode. Gate driver circuitry may produce emission control signals that control the emission transistors. Display driver circuitry may generate a start signal with a digitally controlled pulse width. The start signal may be applied to shift register circuitry in the gate driver circuitry. The pulse width of the start signal may be adjusted to adjust the luminance of the display.

公开(公告)号：US09799713B2

公开(公告)日：2017-10-24

申请号：US15168601

申请日：2016-05-31

Applicant: Apple Inc.

Inventor： Jae Won Choi ,  Shih Chang Chang ,  Young Bae Park ,  ZhiFeng Zhan ,  Chieh-Wei Chen ,  Tsung-Ting Tsai ,  Chin-Wei Lin ,  Paul S. Drzaic

IPC: H01L27/32 ,  H01L51/52 ,  H01L27/12

CPC classification number: H01L27/3258 ,  H01L27/1248 ,  H01L27/3246 ,  H01L51/5253

Abstract: A display may have an array of pixels formed from organic light-emitting diodes and thin-film transistor circuitry. A planarization layer may be interposed between the thin-film transistor circuitry and the organic light-emitting diodes. To protect the organic light-emitting diodes from photoactive compounds that may be outgassed from the planarization layer, an inorganic barrier layer may be interposed between the planarization layer and the organic light-emitting diodes. The inorganic barrier layer may be formed on top of and/or below a pixel definition layer that defines light-emitting zones for the organic light-emitting diodes. In another suitable arrangement, the inorganic barrier layer may itself define light-emitting zones and may be used in place of a polymer-based pixel definition layer. The inorganic barrier layer may include trenches in which the emissive material of the light-emitting diodes is formed.

公开(公告)号：US09727167B2

公开(公告)日：2017-08-08

申请号：US14923246

申请日：2015-10-26

Applicant: Apple Inc.

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

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/36 ,  G02F1/1345 ,  G02F1/1362 ,  G02F1/1368 ,  G09F9/30 ,  H01L23/522 ,  H01L23/528 ,  H01L27/12

CPC classification number: G09G3/3648 ,  G02F1/13338 ,  G02F1/134309 ,  G02F1/1345 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/13456 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04103 ,  G06F2203/04104 ,  G06F2203/04112 ,  G09F9/30 ,  G09G3/3666 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2310/0281 ,  H01L23/5226 ,  H01L23/528 ,  H01L27/124 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A display may have an array of pixels arranged in rows and columns. Each pixel may have a transistor for controlling the amount of output light associated with that pixel. The transistors may be thin-film transistors having active areas, first and second source-drain terminals, and gates. Gate lines may be used to distribute gate control signals to the gates of the transistors in each row. Data lines that run perpendicular to the gate lines may be used to distribute image data along columns of pixels. The gate lines may be connected to gate line extensions that run parallel to the data lines. The data lines may each overlap a respective one of the gate line extensions. Vias may be used to connect the gate line extensions to the gate lines. The gate line extensions may all have the same length.