公开(公告)号：US20190285942A1

公开(公告)日：2019-09-19

申请号：US16294727

申请日：2019-03-06

Applicant: Apple Inc.

Inventor： Rong Liu ,  Edward H Kang ,  Jun Qi ,  Mookyung Son ,  Pee Khaim So ,  Victor H. Yin ,  Wei Lv ,  Wenyong Zhu ,  Zhenyue Luo ,  Xinyu Zhu ,  Ling Han ,  Hung Sheng Lin

IPC: G02F1/1335 ,  H05K1/18 ,  H05K1/02 ,  H05K3/22 ,  H05K3/34

Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.

公开(公告)号：US20190237001A1

公开(公告)日：2019-08-01

申请号：US16132116

申请日：2018-09-14

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Soojin Park ,  Bhadrinarayana L. Visweswaran ,  Chieh-Wei Chen ,  Anshi Liang ,  Marc Albrecht ,  Pierre-Yves Emelie ,  Sean C. Chang ,  Hyunwoo Nho ,  Mohammad Hajirostam ,  Myung-Je Cho ,  Shengkui Gao ,  Wei H. Yao ,  Yafei Bi

IPC: G09G3/20 ,  G09G3/3208

Abstract: A display device may include a processor that may receive image data, such that the image data may include gray level data and display brightness value (DBV) data for a first pixel of a display. The processor may then determine a gain compensation factor associated with the first pixel based on a correction spatial map, a brightness adaptation lookup table (LUT), the gray level data, and the DBV data. The processor may then determine an offset compensation factor associated with the first pixel based on the correction spatial map, the brightness adaptation lookup table (LUT), the gray level data, and the DBV data. The processor may generate compensated gray level data by applying the gain compensation factor and the offset compensation factor to the gray level data and transmit the compensated gray level data to pixel driving circuitry associated with the first pixel.

公开(公告)号：US10339855B2

公开(公告)日：2019-07-02

申请号：US15298085

申请日：2016-10-19

Applicant: Apple Inc.

Inventor： Chin-Wei Lin ,  Hung Sheng Lin ,  Vasudha Gupta ,  Shinya Ono ,  Tsung-Ting Tsai ,  Shyuan Yang

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

Abstract: An electronic device comprises a display and a controller. The controller is configured to provide a first frequency refresh rate to the display. The controller is also configured to generate a control signal configured to control emission of a light emitting diode of a display pixel of the display at a second frequency based on whether the first frequency refresh rate of the display is less than a predetermined threshold value.

公开(公告)号：US10210801B2

公开(公告)日：2019-02-19

申请号：US15012378

申请日：2016-02-01

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Mohammad Ali Jangda ,  Chin-Wei Lin ,  Hyunwoo Nho ,  Vasudha Gupta

IPC: G06F1/00 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3275 ,  G09G3/36 ,  G09G3/3225

Abstract: An electronic device includes a display and a controller. The controller is configured to receive one or more operational characteristics of the display. The controller is also configured to calculate a blank time voltage level for a data line of the display based on the one or more operational characteristics, wherein the blank time voltage level corresponds to a voltage transmitted along the data line of the display immediately subsequent to image data being transmitted along the data line.

公开(公告)号：US10209551B2

公开(公告)日：2019-02-19

申请号：US15677267

申请日：2017-08-15

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Jesse A. Richmond ,  Mohammad B. Vahid Far ,  Tobias Jung ,  Jie Won Ryu ,  Hyunwoo Nho ,  Kingsuk Brahma ,  Sun-Il Chang ,  Junhua Tan ,  Marc Albrecht ,  Chih-Wei Yeh ,  Chaohao Wang

IPC: G02F1/1333 ,  G09G3/20 ,  G09G3/36 ,  G09G3/3233

Abstract: Devices, storage media, and methods for compensating for aging and temperature variations using dual-loop compensation are provided. The compensating for temperature and aging variations of one or more pixels of the display using a coarse scan loop updated at a faster rate. Compensation also includes compensating for aging variations of the one or more pixels of the display using a fine scan loop updated at a slower rate.

公开(公告)号：US20180342193A1

公开(公告)日：2018-11-29

申请号：US15700971

申请日：2017-09-11

Applicant: Apple Inc.

Inventor： Shiping Shen ,  Derek K. Shaeffer ,  Baris Cagdaser ,  Hyunwoo Nho ,  Kingsuk Brahma ,  Hung Sheng Lin ,  Injae Hwang ,  Jie Won Ryu ,  Hyunsoo Kim ,  Junhua Tan ,  Rui Zhang ,  Shengkui Gao ,  Mohammad B. Vahid Far ,  Jesse A. Richmond ,  Sun-Il Chang

IPC: G09G3/20 ,  G09G3/3233 ,  G09G3/36

CPC classification number: G09G3/2092 ,  G09G3/006 ,  G09G3/20 ,  G09G3/3233 ,  G09G3/3648 ,  G09G2320/0209 ,  G09G2320/0219 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/0693 ,  G09G2330/021 ,  G09G2330/06 ,  G09G2330/12

Abstract: Electronic devices and methods for compensating for noise in a display that includes sensing a current in a sensing channel of the display. Compensating for the noise also includes sensing an observation current from noise in an observation channel of the display and scaling the observation current to generate a scaled observation current. The scaled observation current is subtracted from the sense current to generate a compensated output. The compensated output is used to drive compensation operations of the display based at least in part on the compensated output to reduce effects of the noise.

公开(公告)号：US10089931B2

公开(公告)日：2018-10-02

申请号：US14990701

申请日：2016-01-07

Applicant: Apple Inc.

Inventor： Koorosh Aflatooni ,  Yafei Bi ,  Hung Sheng Lin ,  Mohammad Ali Jangda

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3258 ,  H03M1/72 ,  H03M1/76

Abstract: An electronic device that includes a display is provided. The display may have a brightness that is controlled using a series of cascaded digital-to-analog converter circuits. The display may be calibrated at a series of predetermined display brightness settings. For display brightness settings that fall between two consecutive display brightness settings in the series of predetermined display brightness settings, voltage interpolation operations may be performed to obtain the corresponding display brightness settings. Performing voltage interpolations instead of digital brightness setting interpolation helps minimize luminance jumps and unexpected color shifts when adjusting the brightness of the display.

公开(公告)号：US20180268762A1

公开(公告)日：2018-09-20

申请号：US15664982

申请日：2017-07-31

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Mohammad Ali Jangda ,  Injae Hwang ,  Rui Zhang ,  Shengkui Gao ,  Hyunwoo Nho ,  Wei H. Yao ,  Mohammad Hajirostam

IPC: G09G3/3291 ,  G09G3/3266 ,  G09G3/3233

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2320/064

Abstract: An electronic device includes processors that generate image data. The electronic device also includes an electronic display that displays the image data over a first frame duration by programming a first row of display pixels with the image data. The electronic display also displays the image data over the first frame duration by causing the first row of display pixels to emit light for an emission duration that is based at least in part on a first luminance of the image data. The electronic display further displays the image data over the first frame duration by resetting the first row of pixels before an end of the first frame duration.

公开(公告)号：US09953581B2

公开(公告)日：2018-04-24

申请号：US14988594

申请日：2016-01-05

Applicant: Apple Inc.

Inventor： Hung Sheng Lin ,  Chin-Wei Lin ,  Tsung-Ting Tsai ,  Sang Y. Youn ,  Hyunwoo Nho

IPC: G09G3/32 ,  G09G3/3266 ,  G09G3/20 ,  G11C19/00

CPC classification number: G09G3/3266 ,  G09G3/2022 ,  G09G3/2092 ,  G09G2300/0408 ,  G09G2310/0286 ,  G11C19/00

Abstract: This application sets forth a circuit configuration for a light emitting diode (LED) or organic light emitting diode (OLED) display. The circuit configuration allows for the pulse-width modulation (PWM) of each emission signal sent to each line of the display. The PWM of each emission signal is accomplished using a gate-in-panel (GIP) controller of the display. The GIP controller uses an arrangement of shift register outputs and a programmable clock input to control an output of an inverter that provides the emission signal. The programmable clock input can be programmed according to a desired timing or duty cycle for the emission signal. In this way, by limiting the duty cycle of the emission signal, dimming and other display features can be exhibited by the LED or OLED display.

公开(公告)号：US20180082631A1

公开(公告)日：2018-03-22

申请号：US15674208

申请日：2017-08-10

Applicant: Apple Inc.

Inventor： Sun Il Chang ,  Hung Sheng Lin ,  Hyunwoo Nho ,  Jie Won Ryu ,  Junhua Tan ,  Chih-Wei Yeh ,  Chaohao Wang ,  Paolo Sacchetto

IPC: G09G3/3225 ,  G09G3/36

CPC classification number: G09G3/3225 ,  G09G3/20 ,  G09G3/3648 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/041 ,  G09G2320/0646 ,  G09G2320/0693 ,  G09G2340/0435 ,  G09G2340/16 ,  G09G2360/16

Abstract: Systems, methods, and devices for adjusting image display on an electronic display by predicting a temperature change of the electronic display due to heat-producing components near the display or due to changes in content. An electronic device may include an electronic display and processing circuitry. The electronic display may include pixels with behaviors that vary with temperature. As such, the processing circuitry may generate image data to send to the electronic display and adjust the image data or vary an operation of the electronic display based at least in part on a predicted temperature effect on at least part of the active area of the electronic display. The processing circuitry may determine the predicted temperature effect at least in part due to a first heat producing component or changes in content of the image data.