Apple Inc.

Lg Display Co., Ltd.

Zhen Zhang

Paul Stephen Drzaic

Izhar Zahoor Ahmed

Yi Tao

Joshua G Wurzel

Shih Chang Chang

Tsung-Ting Tsai

Paolo Sacchetto

Warren S Rieutort-Louis

Sunggu Kang

Young Bae Park

Saemleenuri Lee

Sangcheon Youn

Marc Joseph DeVincentis

Prashant Mandlik

Jae Won Choi

Soyoung Jo

Chanwoo Lee

Bhadrinarayana Lalgudi Visweswaran

Dongyoon Kim

Christopher M Pinciuc

Mohammad Hajirostam

Anna Ha

Anshi Liang

Seyeoul Kwon

Heeseok Yang

Yoondong Cho

Han-Chieh Chang

Yong Sun

Bulong Wu

Xin Zhao

Yun Yu Wang

John Z Zhong

Wei Hsin Yao

Victor H Yin

Hoon Sik Kim

Daniel William Jarvis

Chin-Wei Lin

Hopil Bae

Sawyer Isaac Cohen

Hung Sheng Lin

Hyunwoo Nho

Derek Keith Shaeffer

Yafei Bi

Abbas Jamshidi Roudbari

Jie Won Ryu

Yu Cheng Chen

Sun-il Chang

Mohammad Bagher Vahid Far

Sang Young Youn

John J Baker

Baris Cagdaser

Shengkui Gao

Mahdi Farrokh Baroughi

David W Ritter

Rui Zhang

Yung-Yu Hsu

Jesse Aaron Richmond

Steven E Molesa

Douglas G Fournier

Yifan Zhang

Chun-Hao Tung

Zhang Jia

Yaocheng Zhang

Paul U Leutheuser

Paul C Kelley

Ying-Chih Wang

Stephen S Poon

Eric W Bates

Terry C Lam

Hao Dong

Jaein Choi

Sinan Alousi

Sang Ha Kim

Jingjing Xu

Po-Chieh Hung

Mingjing Ha

Christopher S Erickson

Tiffany T Moy

Kiarash Vakhshouri

Sandeep Chalasani

Cyrus Y Liu

MinKyu Kim

James P Landry

Damien S Boesch

Elmar Gehlen

Francois R Jacob

Sungki Lee

Terry C Shyu

Sungwon Bae

Chih Jen Yang

Shaorui Yang

Zuoqian Wang

Ki Yeol Byun

Shaowei Qin

Amy M Winkler

Chieh-Chien Lin

Kikue S Burnham

Kuan H Lu

Jonathan P Mar

An electronic device is disclosed. The electronic device includes a device magnet designed to magnetically couple with an accessory device magnet. The electronic device further includes a display assembly and a magnetic field sensor configured to detect the accessory device magnet, thereby providing an indication that the accessory device is covering the display assembly. The electronic device further includes a shunt assembly designed to reduce the magnitude of the magnetic field of the device magnet, as determined by the magnetic field sensor, while allowing the magnetic field from the accessory device to sufficiently reach the magnetic field sensor. As such, the magnetic field sensor can be placed near the device magnet without triggering the magnetic field sensor. The electronic device may further include a microphone. Communication between the microphone and an integrated circuit can cease based on the magnetic field sensor detecting the accessory device magnet.

Electronic device with magnetic field sensor design for detection of multiple accessories

An electronic device display may have pixels formed from crystalline semiconductor light-emitting diode dies, organic light-emitting diodes, or other pixel structures. The pixels may be formed on a display panel substrate. A display panel may extend continuously across the display or multiple display panels may be tiled in two dimensions to cover a larger display area. Interconnect substrates may have outwardly facing contacts that are electrically shorted to corresponding inwardly facing contacts such as inwardly facing metal pillars associated with the display panels. The interconnect substrates may be supported by glass layers. Integrated circuits may be embedded in the display panels and/or in the interconnect substrates. A display may have an active area with pixels that includes non-spline pixels in a non-spline display portion located above a straight edge of the display and spline pixel in a spline display portion located above a curved edge of the display.

Electronic devices with borderless displays

An electronic device includes a housing that defines an aperture, and a display assembly positioned in the aperture. The display assembly can include a display layer having a first portion, and a second portion bending at least partially below the first portion. The first portion and the second portion can define a bend volume, and a potting material can be disposed in the bend volume, such that the potting material contacts the first portion and the second portion. An internal enclosure can be contoured to the display assembly.

Display panel bend reinforcement

A system may include a display driven using display driving circuitry to present an image via pixels. The display driving circuitry may include a sensor core compatible with one or more strain sensing circuits. The same sensor core may be used by a control system of the display to sense a stress applied to a strained region of a display using a current divider sensing circuit and/or a Wheatstone bridge sensing circuit.

Display circuitry including strain gauge

An electronic device display may have pixels formed from crystalline semiconductor light-emitting diode dies, organic light-emitting diodes, or other pixel structures. The pixels may be formed in a display panel having a single substrate or an array of display panel tiles. The display panel has inwardly facing display panel contacts that mate with corresponding outwardly facing interconnect substrate contacts on an interconnect substrate. The interconnect substrate may have areas with compound curvature that are overlapped by the display panel. To enhance flexibility of the interconnect substrate, the interconnect substrate may have flexibility enhancement openings and/or may be formed from a material with a low elastic modulus such as silicone or other elastomeric material.

Electronic devices with curved displays

An electronic device may have a camera that captures images of objects that are illuminated by ambient light. Some ambient light sources may not render the colors of objects faithfully. To detect low quality ambient lighting conditions and to correct for these conditions, control circuitry in the electronic device gathers ambient light measurements from a color ambient light sensor. The measurements are used to produce an ambient light spectral power distribution. The ambient light spectral power distribution can be applied to a series of test color samples to produce responses. Responses can also be produced by applying a reference illuminant to the test color samples. These responses can then be processed to generate a color rendering index or other color rendering metric for the ambient light and can be used to create a color correction matrix to correct the color of the captured images.

Electronic devices with color compensation

A display may have an array of organic light-emitting diodes that form an active area on a flexible substrate. Metal traces may extend between the active area and an inactive area of the flexible substrate. Display driver circuitry such as a display driver integrated circuit may be coupled to the inactive area. The metal traces may extend across a bend region in the flexible substrate. The flexible substrate may be bent in the bend region. The flexible substrate may be made of a thin flexible material to reduce metal trace bending stress. A coating layer in the bend region may be provided with an enhanced elasticity to allow its thickness to be reduced. The flexible substrate may be bent on itself and secured within an electronic device without using a mandrel.

Flexible display panel with bent substrate

An electronic device may have a flexible display such as an organic light-emitting diode display. A strain sensing resistor may be formed on a bent tail portion of the flexible display to gather strain measurements. Resistance measurement circuitry in a display driver integrated circuit may make resistance measurements on the strain sensing resistor and a temperature compensation resistor to measure strain. A crack detection line may be formed from an elongated pair of traces that are coupled at their ends to form a loop. The crack detection line may run along a peripheral edge of the flexible display. Crack detection circuitry may monitor the resistance of the crack detection line to detect cracks. The crack detection circuitry may include switches that adjust the length of the crack detection line and thereby allow resistances to be measured for different segments of the line.

Electronic device display with monitoring circuitry utilizing a crack detection resistor

Electronic device display with monitoring circuitry

A display may have an array of organic light-emitting diodes that form an active area on a flexible substrate. Display driver circuitry such as a display driver integrated circuit may be coupled to an inactive area of the flexible substrate. Metal traces may extend across a bent region of the flexible substrate between the active area and inactive area. Metal traces may have zigzag shapes to reduce stress when bending. Adjacent pairs of parallel segments in the metal traces may be shorted together by a bridging segment that extends perpendicular to the two parallel segments. The bridging segment may be offset from corners to avoid clusters of stress zones in the metal trace. Neutral plane adjustment layers in the bent region may include a metal layer to help counteract the bending force of the flexible substrate and the relaxation of an upper polymer coating.

Displays with redundant bent signal lines and neutral plane adjustment layers

An electronic device may be provided with a color sensing ambient light sensor. The color sensing ambient light sensor may measure the color of ambient light. Control circuitry in the electronic device may use information from the color sensing ambient light sensor in adjusting a display in the electronic device or taking other action. The color sensing ambient light sensor may have light detectors with different spectral responses. A test system may be used to calibrate the color sensing light sensor. The test system may have a tunable light source with light-emitting diodes that are turned on in sequence while gathering measured responses from the detectors. Numerical optimization techniques may be used to produce final versions of the spectral responses for the light detectors from the measured responses and corresponding calibration data that is stored in the electronic device.

Methods for color sensing ambient light sensor calibration

An electronic device may have a flexible portion that allows the device to be folded. The device may have a flexible display. The flexible display may have a flexible display layer, a cover layer, a touch sensor interposed between the flexible display layer and the cover layer, a support layer, and a polarizer layer. The polarizer layer may be interposed between the touch sensor and the flexible display or between the touch sensor and the cover layer. The touch sensor may include optically clear adhesive that is flexible and facilitates bending of the display. The optically clear adhesive may include additives such as water vapor penetration reducing additive, anticorrosion additive, ultraviolet-light blocking additive, and index-of-refraction adjustment additive. The support layer may be formed from shape memory alloy or amorphous metal and may have openings to facilitate bending.

Electronic devices with flexible displays

A display may have an array of organic light-emitting diodes that form an active area on a flexible substrate. Metal traces may extend between the active area and an inactive area of the flexible substrate. Display driver circuitry such as a display driver integrated circuit may be coupled to the inactive area. The metal traces may extend across a bent region in the flexible substrate. A coating layer in the bent region may serve as a neutral stress plane adjustment layer. Metal traces may have meandering shapes such as zigzag shapes to reduce stress when bending. Adjacent traces may be shorted together to provide redundancy. Multiple layers of traces may be provided. Inorganic passivation layer coatings on the metal traces may help protect the metal traces.

Flexible display panel with redundant bent signal lines

A conductive trace design is described that minimizes the possibility of crack initiation and propagation in conductive traces during bending. The conductive trace design has a winding trace pattern that is more resistant to the formation of cracks at high stress points in the conductive traces. The conductive trace design includes a cap that helps ensure electrical connection of the conductive trace even though one or more cracks may begin to form in the conductive portion of the conductive trace.

Flexible display device with reduced bend stress wires

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San Jose, CA, United States of America

Zhen Zhang