Universal Display Corporation

Princeton University

Apple Inc.

Prashant Mandlik

Ruiqing Ma

Julia J Brown

Sigurd Richard Wagner

Jeffrey Silvernail

Huiqing Pang

Peter Levermore

Lin Han

Kamala Rajan

Bhadrinarayana Lalgudi Visweswaran

Emory Krall

Jason Paynter

Luke Walski

Chuanjun Xia

Tsung-Ting Tsai

Yu Cheng Chen

John Thomas Felts

Zhen Zhang

Mohammad Hajirostam

Takahide Ishii

Ankit Mahajan

Jeff Silvernail

Chia-Hao Chang

Yun Yu Wang

Shih Chang Chang

Paul Stephen Drzaic

Wei Hsin Yao

Michael G Hack

Hoon Sik Kim

Paul E Burrows

Ting-Kuo Chang

Hung Sheng Lin

Jean-Pierre Simon Guillou

Hyunwoo Nho

Yafei Bi

Abbas Jamshidi Roudbari

Jie Won Ryu

Sun-il Chang

Mohammad Bagher Vahid Far

Sang Young Youn

Shengkui Gao

Siddharth Harikrishna Mohan

Rui Zhang

Jae Won Choi

Izhar Zahoor Ahmed

Christopher Edward Glazowski

Chang-Chia Huang

Terry C Lam

Shang-Chih Lin

Yasmin F Afsar

Sinan Alousi

Cheng-Chih Hsieh

Han Liu

Chih-Lei Chen

Sungki Lee

Jeffrey A Silvernail

Chih Jen Yang

Ki Yeol Byun

Themistoklis Afentakis

Wen-I Hsieh

Chia-hao Chang

Hui Lu

Kuan-yi Lee

Asli Sirman

Ben Hightower

Zhichun Shao

Ko-Wei Chen

Chien-Chung Wang

Te-Hua Teng

Jeffery Silvernail

David L Wei

A first product may be provided that comprises a substrate having a first surface, a first side, and a first edge where the first surface meets the first side; and a device disposed over the substrate, the device having a second side, where at least a first portion of the second side is disposed within 3 mm from the first edge of the substrate. The first product may further comprise a first barrier film that covers at least a portion of the first edge of the substrate, at least a portion of the first side of the substrate, and at least the first portion of the second side of the device.

Electronic device with reduced non-device edge area

An electronic device may have a display such as an organic light-emitting diode display. The 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. A first passivation layer, a first planarization layer, and a second passivation layer may be formed over the cathode. The first and second passivation layers may be formed from inorganic material. A second planarization layer may be formed over the second passivation layer between the second passivation layer and a polarizer. The second planarization layer may planarize the polarizer at the edges of the active area of the display where the polarizer would otherwise have a steep taper. Planarizing the polarizer in this way mitigates undesirable secondary reflections off of the polarizer. The first and second planarization layers may be formed from organic material.

Organic light-emitting diode displays with planarization layers

An organic light-emitting diode (OLED) display may have an array of pixels that each have OLED layers interposed between a cathode and an anode. The display may also include a planarization layer that is deposited using inkjet printing. To mitigate the need for dam structures to prevent overflow of the planarization layer during inkjet printing, capillary-flow-inducing structures may be included in the inactive area of the display. The topology of the capillary-flow-inducing structures may be propagated to a passivation layer such that an upper surface of the passivation layer has a similar topology as the capillary-flow-inducing structures. The planarization layer therefore undergoes capillary flow when deposited on the upper surface of the passivation layer. The capillary-flow-inducing structures may be formed from dots, rectangular strips, or trapezoidal strips. The capillary-flow-inducing structures may be formed from the same material as spacers in the active area or using another layer in the display.

Organic light-emitting diode displays with capillary-flow-inducing structures

A flexible display in a foldable electronic device may have a display cover layer and display panel that bend around a bend axis. The display panel may have an array of pixels configured to display an image through the display cover layer. The pixels may be formed from thin-film display circuitry that is supported by a flexible display panel substrate. The flexible substrate may be supported by a display support plate that bends about the bend axis. The display may be configured to allow attachment of the display panel substrate to the display support plate while helping to prevent undesired localized deformation of the thin-film display circuitry.

Electronic devices with deformation-resistant displays

Methods for forming a coating over a surface are disclosed. A method includes directing a first source of barrier film material toward a substrate in a first direction at an angle &#x3b8; relative to the substrate, wherein &#x3b8; is greater than about 0&#xb0; and less than about 85&#xb0;. Additionally, a method of depositing a barrier film over a substrate includes directing a plurality of N sources of barrier film material toward a substrate, each source being directed at an angle &#x3b8;relative to the substrate, wherein for each &#x3b8;, &#x3b8; is greater than about 0&#xb0; and less than about 180&#xb0;. For at least a first of the &#x3b8;, &#x3b8;is greater than about 0&#xb0; and less than about 85&#xb0;, and for at least a second of the &#x3b8;, &#x3b8;is greater than about 95&#xb0; and less than about 180&#xb0;.

Barrier film for electronic devices and substrates

A method of forming microelectronic systems on a flexible substrate includes depositing a plurality of layers on one side of the flexible substrate. Each of the plurality of layers is deposited from one of a plurality of sources. A vertical projection of a perimeter of each one of the plurality of sources does not intersect the flexible substrate. The flexible substrate is in motion during the depositing the plurality of layers via a roll to roll feed and retrieval system.

Manufacturing flexible organic electronic devices

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

In some embodiments, a first product is provided. The first product may include a substrate, a device having a device footprint disposed over the substrate, and a barrier film disposed over the substrate and substantially along a side of the device footprint. The barrier film may comprise a mixture of a polymeric material and non-polymeric material. The barrier film may have a perpendicular length that is less than or equal to 3.0 mm from the side of the device footprint.

Edge barrier film for electronic devices

A display may have organic light-emitting diode pixels formed from thin-film circuitry. An organic layer including planarization layers and a pixel definition layer may overlap the thin-film circuitry. Thin-film encapsulation may overlap the organic layer. The thin-film encapsulation may be formed from an organic dielectric layer interposed between two layers of inorganic dielectric material. A strip of peripheral crack-stopper structures may run along an edge of the display and may surround the array of pixels. The crack-stopper structures may include parallel inorganic lines formed from a first inorganic layer such as an inorganic layer of the thin-film circuitry. A strip of the organic layer may overlap the parallel inorganic lines. The crack-stopper structures may have parallel tapered polymer lines. The polymer lines may be overlapped by a second inorganic dielectric layer formed from the inorganic material of the thin-film encapsulation layer.

Organic light-emitting diode display panels

Electronic device display with monitoring circuitry

Growing community of inventors

Lawrenceville, NJ, United States of America

Prashant Mandlik