Patents by Inventor Juho Ilkka Jalava
Juho Ilkka Jalava has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240103310Abstract: Systems, methods, and devices are disclosed for front-lit displays having uniform brightness. In one embodiment, an example display may include an electrophoretic display, a light guide configured to direct light from one or more light emitting diodes, and a cover lens assembly. The cover lens assembly may include a cover glass layer, an anti-glare film coupled to the cover glass layer, and a hot melt adhesive disposed about lateral edge surfaces of the cover glass layer and the anti-glare film, such that the hot melt adhesive forms a perimeter of the cover lens assembly.Type: ApplicationFiled: September 27, 2022Publication date: March 28, 2024Applicant: Amazon Technologies, Inc.Inventors: Nageswara Rao Tadepalli, Weihsin Hou, Kyu-Tak Son, Juho Ilkka Jalava, Ahmed Hassan, Xiaolong Zheng, Moonshik Kang
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Patent number: 11614577Abstract: Systems, methods, and computer-readable media are disclosed for dual-color frontlit displays with near uniform color mixing. In one embodiment, an example device may include a light emitting diode (LED) array that includes a first LED that emits light having a first color and a second LED that emits light having a second color, and a light guide that includes a surface having a first portion adjacent to the first LED and a second portion adjacent to the second LED. The first portion may include a first number of binary element surface features formed on the surface, and the second portion may include a second number of binary element surface features formed on the surface.Type: GrantFiled: May 19, 2020Date of Patent: March 28, 2023Assignee: Amazon Technologies, Inc.Inventor: Juho Ilkka Jalava
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Patent number: 11016234Abstract: An electronic device includes a stack assembly and a cover glass. The stack assembly includes an electrophoretic display sub-assembly for rendering content, a front light sub-assembly comprising a light guide, a light FPC, and a plurality of light sources, and a capacitive touch sensing sub-assembly for detecting touch inputs. A yellow-pigmented tape is applied over the light sources and an edge of the light guide. A stiffener member is coupled to the light FPC opposite the yellow-pigmented tape.Type: GrantFiled: May 2, 2018Date of Patent: May 25, 2021Assignee: AMAZON TECHNOLOGIES, INC.Inventors: Siddharth Gupta, Jerry Yee-Ming Chung, Hany Mounir Ghali, Robert L. D. Zenner, Juho Ilkka Jalava, Sherman Shwe Win Tan
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Patent number: 10725230Abstract: Systems, methods, and computer-readable media are disclosed for dual-color frontlit displays with near uniform color mixing. In one embodiment, an example device may include a light emitting diode (LED) array that includes a first LED that emits light having a first color and a second LED that emits light having a second color, and a light guide that includes a surface having a first portion adjacent to the first LED and a second portion adjacent to the second LED. The first portion may include a first number of binary element surface features formed on the surface, and the second portion may include a second number of binary element surface features formed on the surface.Type: GrantFiled: April 18, 2017Date of Patent: July 28, 2020Assignee: Amazon Technologies, Inc.Inventor: Juho Ilkka Jalava
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Patent number: 10288797Abstract: 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.Type: GrantFiled: December 19, 2016Date of Patent: May 14, 2019Assignee: Amazon Technologies, Inc.Inventors: Robert Arthur Sprague, Eric Gifford Marason, Weihsin Hou, Juho Ilkka Jalava
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Patent number: 10288996Abstract: Systems, methods, and computer-readable media are disclosed for display sheets with angled mirror surfaces. In one embodiment, an example display sheet may include a first layer and a plastic layer coupled to the first layer. The plastic layer may include a first portion with a first set of mirrors embossed on a surface of the plastic layer, where the first set of mirrors comprises a first tilt angle and a first roll angle. The plastic layer may include a second portion with a second set of mirrors embossed on the surface, where the second set of mirrors comprises a second tilt angle and a second roll angle. The display sheet may be configured to reflect light in a horizontal field of view and a vertical field of view with respect to a projector positioned to direct light at the display sheet.Type: GrantFiled: December 15, 2016Date of Patent: May 14, 2019Assignee: Amazon Technologies, Inc.Inventors: Eric Gifford Marason, Tero Johannes Tuohioja, Juho Ilkka Jalava, Miguel Virgen
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Publication number: 20180252981Abstract: An electronic device includes a stack assembly and a cover glass. The stack assembly includes an electrophoretic display sub-assembly for rendering content, a front light sub-assembly comprising a light guide, a light FPC, and a plurality of light sources, and a capacitive touch sensing sub-assembly for detecting touch inputs. A yellow-pigmented tape is applied over the light sources and an edge of the light guide. A stiffener member is coupled to the light FPC opposite the yellow-pigmented tape.Type: ApplicationFiled: May 2, 2018Publication date: September 6, 2018Inventors: Siddharth Gupta, Jerry Yee-Ming Chung, Hany Mounir Ghali, Robert L.D. Zenner, Juho Ilkka Jalava, Sherman Shwe Win Tan
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Patent number: 9983455Abstract: An electronic device includes a stack assembly and a cover glass. The stack assembly includes an electrophoretic display sub-assembly for rendering content, a front light sub-assembly comprising a light guide, a light FPC, and a plurality of light sources, and a capacitive touch sensing sub-assembly for detecting touch inputs. A yellow-pigmented tape is applied over the light sources and an edge of the light guide. A stiffener member is coupled to the light FPC opposite the yellow-pigmented tape.Type: GrantFiled: December 22, 2015Date of Patent: May 29, 2018Assignee: AMAZON TECHNOLOGIES, INC.Inventors: Siddharth Gupta, Jerry Yee-Ming Chung, Hany Mounir Ghali, Robert L. D. Zenner, Juho Ilkka Jalava, Sherman Shwe Win Tan
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Publication number: 20170176835Abstract: An electronic device includes a stack assembly and a cover glass. The stack assembly includes an electrophoretic display sub-assembly for rendering content, a front light sub-assembly comprising a light guide, a light FPC, and a plurality of light sources, and a capacitive touch sensing sub-assembly for detecting touch inputs. A yellow-pigmented tape is applied over the light sources and an edge of the light guide. A stiffener member is coupled to the light FPC opposite the yellow-pigmented tape.Type: ApplicationFiled: December 22, 2015Publication date: June 22, 2017Inventors: Siddharth Gupta, Jerry Yee-Ming Chung, Hany Mounir Ghali, Robert L.D. Zenner, Juho Ilkka Jalava, Sherman Shwe Win Tan
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Patent number: 9466246Abstract: Systems, methods, and computer-readable media are disclosed for ambient light sensing for electronic displays. In one embodiment, a device may include a light guide with a first surface and a second surface, where the light guide has a first refractive index value. The device may include a light sensor mounted on either the first surface or the second surface, the light sensor positioned such that at least a portion of ambient light incident upon the light guide is directed to a detection window of the light sensor, where the detection window has a second material having a second refractive index value. The device may include an adhesive layer configured to optically couple the light sensor to the light guide, the adhesive layer having a third refractive index value equal to or greater than the first refractive index value and equal to or less than the second refractive index value.Type: GrantFiled: March 16, 2015Date of Patent: October 11, 2016Assignee: Amazon Technologies, Inc.Inventor: Juho Ilkka Jalava
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Patent number: 9405052Abstract: The subject matter disclosed herein relates to an optical device comprising: a transparent foil including a series of ridges and furrows, a first distal portion configured to receive light, and a second distal portion to emit at least a portion of the received light, wherein the series of ridges and furrows diverges in a direction from the first distal portion to the second distal portion.Type: GrantFiled: June 28, 2013Date of Patent: August 2, 2016Assignee: Modilis Holdings LLCInventor: Juho Ilkka Jalava
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Patent number: 9360615Abstract: The subject matter disclosed herein relates to an optical device comprising: a light guide film to transport light rays via total internal reflection; a first optical layer covering at least a portion of a first side of the light guide film, the first optical layer to receive an exiting portion of the light rays; a second optical layer covering at least a portion of the first optical layer; and a grating pattern located at an interface between the first optical layer and the second optical layer to out-couple light rays travelling in the light guide film, wherein the grating pattern is configured so that the exiting portion of the light rays transmit through the grating pattern twice before being total internally reflected by the grating pattern.Type: GrantFiled: March 27, 2015Date of Patent: June 7, 2016Assignee: Modilis Holdings LLCInventor: Juho Ilkka Jalava
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Patent number: 8995807Abstract: The subject matter disclosed herein relates to an optical device comprising: a light guide film to transport light rays via total internal reflection; a first optical layer covering at least a portion of a first side of the light guide film, the first optical layer to receive an exiting portion of the light rays; a second optical layer covering at least a portion of the first optical layer; and a grating pattern located at an interface between the first optical layer and the second optical layer to out-couple light rays travelling in the light guide film, wherein the grating pattern is configured so that the exiting portion of the light rays transmit through the grating pattern twice before being total internally reflected by the grating pattern.Type: GrantFiled: June 28, 2013Date of Patent: March 31, 2015Assignee: Modilis Holdings LLCInventor: Juho Ilkka Jalava