Amazon Technologies, Inc.

Weihsin Hou

Anoop Menon

Robert Arthur Sprague

Chin Siong Khor

Yean Chan Woon

Siddharth Gupta

Jukka Kristian Backman

Ming Wang

Eric Gifford Marason

Gregory Turner Witmer

Keith Ho Soo Suan

Guneet Sethi

Jori Juhani Oravasaari

Kari Rinko

Shan Cheng

Tiffany Yun

Jerry Yee-Ming Chung

Juho Ilkka Jalava

Christopher Thomas Li

Tin Quang Pham

Shankar Ganapathysubramanian

Robert L D Zenner

Srivatsan Subbarayan

Joel Martin Pollack

Keith Soo Suan Ho

Jack Shih-Chieh Wei

Saket Patil

Yuyan Hua

Jorge Ferrer Pont

Nhi A Duong

Heather Kulani Coursey

Robert A Sprauge

An electronic device with a flexible display subassembly is provided. The display stack may use two layers of adhesives having different elastic properties to improve mechanical impact resistance, with a first adhesive layer made of a viscoelastic material and a second adhesive layer having a low modulus of elasticity. The display stack may also include a hot melt protective sheet (HMPS) covering the display subassembly. The HMPS may be wrapped around the two side edges of a rigid substrate to attach directly to the substrate, thereby aiding in the adhesion of the display stack to the substrate. The display stack may also includes a patterned back protective sheet in which the protective backing layer is removed along the curved portions of the display stack.

Borderless display with curved edges

Systems, methods, and computer-readable media are disclosed for hybrid displays including electrophoretic displays and organic light emitting diodes. In one embodiment, an example display may include an alternating array with OLED units and EPD units disposed on a substrate, a structural layer defining walls separating each of the EPD units, and a color filter array substrate disposed on a side of the display opposite the substrate. The OLED units may include red OLED units, green OLED units, and blue OLED units, and the color filter array may include red filters, green filters, and blue filters that align with the EPD segments that are adjacent to the red OLED units, the green OLED units, and the blue OLED units, respectively.

Hybrid displays including electrophoretic displays and light emitting diodes

In some implementations, an electronic device includes a display stack to display content. The display stack can include a number of substrates coupled using a liquid optically clear adhesive (LOCA). In some implementations, the LOCA can have a modulus of elasticity of no greater than 80,000 Pa. Additionally, the display stack can be formed using a process that includes applying an external force to the display stack by placing the display stack between two fixtures. In an implementation, the external force can be applied while heating the display stack at a temperature of at least 60&#xb0; C. and cooling the display stack according to a particular cooling rate.

Display stack formed to minimize substrate warping

Systems, methods, and computer-readable media are disclosed for structural alignment features for light emitting diode arrays. In one embodiment, a device may include a light guide with a first surface, a second surface opposite the first surface, and a third surface perpendicular to the first surface and the second surface. The device may include a light emitting diode array with a first set of light emitting diodes arranged in a first row and a second set of light emitting diodes arranged in a second row. The first set of light emitting diodes may be optically and physically coupled to the first surface, and the second set of light emitting diodes may be optically coupled to the second surface.

Structural alignment features for light emitting diode arrays

Systems, methods, and computer-readable media are disclosed for self-healing flexible electrophoretic displays and related devices. In one embodiment, an example flexible electrophoretic display may include a flexible plastic thin film transistor (TFT) backplane having a first width, an electrophoretic layer coupled to the flexible plastic TFT backplane, an electrode layer coupled to the electrophoretic layer, an integrated circuit disposed on the flexible plastic TFT backplane, and a protective sheet having a second width that is greater than or equal to the first width.

Self-healing flexible electrophoretic displays

This disclosure describes methods and devices useful for adhering a first substrate of a display to a second substrate of the display. In example embodiments, a first plate may be sealed to the first substrate, and a second plate may be sealed to the second substrate. In addition, a layer of adhesive may be disposed between the first and second substrates to assist in adhering the first substrate to the second substrate. A pressure may then be applied to the first and second plates as well as the first and second substrates to assist in the adhesion process. In example embodiments, the first plate may assist in applying pressure proximate a perimeter of the first substrate such that the perimeter of the first substrate adheres to a perimeter of the second substrate.

Devices for substrate adhesion

Described herein are electronic devices that includes a display stack having a cover component atop a lightguide component and a display component below the lightguide component. In some instances, the cover component including an antiglare etching applied to a top surface of a coverglass and a touch pattern applied to a bottom surface of the coverglass. In some cases, an optically clear adhesive layer formed from two types of optically clear adhesive may be located between the cover component and the lightguide component and a ring adhesive may be applied to around an outer edge of the cover component, the optically clear adhesive and the lightguide component.

Display stack

In some examples, a lighting apparatus includes a light guiding component having a light absorbing material disposed on at least one surface. The light absorbing material may be selected to have light absorbing properties to compensate for variations in the color of portions of light emitted by a light source. For instance, the color of the light absorbing material may be generally complimentary to an undesirable color of a portion of the emitted light. Consequently, by reflecting the portion of light off the light absorbing material, the undesirable color may be absorbed from the portion of the light so that the resulting light is of a more uniform color. This disclosure also describes techniques for assembling electronic devices in a component stack to provide enhanced display lighting uniformity.

Controlling display lighting color and uniformity

A multifunctional device layer may include a lightguide substrate having an optically patterned surface and an opposing non-patterned surface. The non-patterned surface of the lightguide substrate is coated with a first material having a first refractive index and the patterned surface is coated with a second material having a second refractive index. The first refractive index may be lower than the second refractive index and each may be lower than a refractive index of the lightguide substrate. A touch sensor may be formed on the coated non-patterned surface of the lightguide substrate, the coated patterned surface, or on an interstitial layer deposited on the coated non-patterned surface or the coated patterned surface. An anti-glare/anti-reflective coating potentially having ultraviolet (UV) absorption properties may be applied to the touch sensor.

Multifunctional layer for a display device

Technologies are described herein for photobleaching a display. A display may be photobleached by exposing the display to light emitted by an external lamp and/or may be photobleached using one or more display lights of the electronic device during a burn-in period. In some examples, the light emitted by the lamp is filtered to remove wavelengths below a certain wavelength. The light that is received by the display from the lamp may include wavelengths between about 310 nm and 700 nm. These wavelengths correspond to visible light and near-visible light. The display may be exposed to the light for some duration or until some dose of light is received by the display. In other configurations, a burn-in period is performed for about eighteen hours.

Photobleaching displays to mitigate color gradients

In some implementations, a process includes forming a layer of a liquid optically clear adhesive (LOCA) on a surface of a first substrate. Additionally, the LOCA can be contacted with a surface of a second substrate. The LOCA can then be exposed to Ultraviolet (UV) radiation. After exposing the LOCA to UV radiation, additional substrates can be coupled to the first substrate, the second substrate, or both to form a display stack. In an implementation, the total energy/unit area for the UV radiation applied to the LOCA can be no greater than 25,000 kJ/cm.

Display stack fabrication

In some examples, a lighting apparatus includes a light guiding component having a reflective material disposed on at least one surface. The reflective material may be shaped to have desired light reflecting and/or diffusing properties to provide a more uniform light distribution, such as for lighting an electronic display or other surface. In some cases, the reflective material may be a white tape having a reflective light-diffusing surface. The light reflecting material may be cut or otherwise shaped to provide the desired light reflecting and/or diffusing properties. As one example, the amount of the reflective material located over a central axis of light emitted by a light source may be greater than the amount reflective material located between light sources. This disclosure also describes techniques for assembling electronic devices in a component stack to provide enhanced display lighting uniformity.

Growing community of inventors

Fremont, CA, United States of America

Weihsin Hou