Chen Chen

Address:

2059 Wisper Wood Way, Windsor Mill, MD 21244

VIN:

1HGCM56197A039433

Make:

HONDA

Model:

ACCORD

Year:

2007

US Patent:

20220231203, Jul 21, 2022

Filed:

Apr 6, 2022

Appl. No.:

17/714814

Inventors:

- Branford CT, US
Chen Chen - Branford CT, US

Assignee:

Saphlux, Inc. - Branford CT

International Classification:

H01L 33/50
H01L 25/075
H01L 33/46

Abstract:

In accordance with one or more aspects of the present disclosure, a semiconductor device is provided. The semiconductor device may include: a plurality of light-emitting devices comprising a first light-emitting device, a second light-emitting device, and a third light-emitting device, wherein each of the plurality of light-emitting devices comprises a first ohmic contact and a second ohmic contact; and a light-conversion device with embedded quantum dots, wherein a first portion of the light-conversion device includes a first plurality of quantum dots for converting light produced by the first light-emitting device into light of a first color, wherein a second portion of the light-conversion device includes a second plurality of quantum dots for converting light produced by the second light-emitting device into light of a second color, and wherein the third light-emitting device emits light of a third color.

US Patent:

20200295239, Sep 17, 2020

Filed:

Mar 11, 2020

Appl. No.:

16/816136

Inventors:

- Branford CT, US
Joo Won Choi - Branford CT, US
Chen Chen - Branford CT, US

International Classification:

H01L 33/50

Abstract:

Aspects of the disclosure provide for light conversion devices incorporating quantum dots and methods of fabricating the same. In accordance with some embodiments of the present disclosure, a light conversion device is provided. The light conversion device may include. a porous structure comprising one or more nanoporous materials, wherein the one or more nanoporous materials comprise a plurality of pores; and a plurality of quantum dots placed in the porous structure, wherein the plurality of quantum dots comprises a first plurality of quantum dots configured to convert light of a first color into light of a second color, and a second plurality of quantum dots configured to convert the light of the first color into light of a third color. Each of the plurality of pores may have a nanoscale size. The nonporous materials may further include a matrix comprising a semiconductor material, glass, plastic, metal, polymer, etc.

US Patent:

20200194619, Jun 18, 2020

Filed:

Dec 13, 2019

Appl. No.:

16/714210

Inventors:

- Branford CT, US
Jie Song - Branford CT, US
Chen Chen - Branford CT, US

International Classification:

H01L 33/06
H01L 33/00
H01L 33/32

Abstract:

In accordance with some embodiments of the present disclosure, a semiconductor device (e.g., a light-emitting device) is provided. The semiconductor device may include a first epitaxial layer of a first group III-V material, a superlattice layer grown on the first epitaxial layer of the first group III-V material, and a second epitaxial layer of the first group iii-v material grown on the superlattice layer. In some embodiments, the superlattice layer may include the first group III-V material and a second group III-V material. In some embodiments, the first epitaxial layer may include the first group III-V material of a semipolar orientation. The semipolar orientation may include at least one of at least one of a (201) orientation, a (20) orientation, a (301) orientation, or a (30) orientation including off-axis orientations within 4 degrees. The second epitaxial layer may include the first group III-V material of the semipolar orientation.

US Patent:

20190189843, Jun 20, 2019

Filed:

Dec 15, 2017

Appl. No.:

15/843758

Inventors:

- Branford CT, US
Chen Chen - New Haven CT, US

International Classification:

H01L 33/10
H01L 33/06
H01L 33/00
H01L 33/32

Abstract:

Aspects of the disclosure provide for mechanisms for fabricating light extraction structures for semiconductor devices (e.g., light-emitting devices). In accordance with some embodiments, a semiconductor device is provided. The semiconductor device may include: a first semiconductor layer including an epitaxial layer of a semiconductor material; a second semiconductor layer comprising an active layer; and a light-reflection layer configured to cause at least a portion of light produced by the active layer to emerge from the semiconductor device via a surface of the second semiconductor layer, wherein the light-reflection layer is positioned between the first semiconductor layer and the second semiconductor layer. In some embodiments, the semiconductor material includes gallium nitride. In some embodiments, the light-reflection layer includes a layer of gallium.

US Patent:

20190189849, Jun 20, 2019

Filed:

Dec 15, 2017

Appl. No.:

15/844344

Inventors:

- Branford CT, US
Chen Chen - New Haven CT, US
Jie Song - New Haven CT, US

International Classification:

H01L 33/32
H01L 33/08
C30B 29/40
H01L 33/24
H01L 21/02
H01L 29/20
H01L 27/15

Abstract:

Aspects of the disclosure provide for mechanisms for forming air voids for semiconductor fabrication. In accordance with some embodiments, a method for forming air voids may include forming a first semiconductor layer including a first group III material and a second group III material on a substrate; forming a plurality of air voids in the first semiconductor layer by removing at least a portion of the second group III material from the first semiconductor layer; and forming a second semiconductor layer on the first semiconductor layer. The second semiconductor layer may include an epitaxial layer of a group III-V material. In some embodiments, the first group III material and the second group III material may be gallium and indium, respectively.

US Patent:

20190097865, Mar 28, 2019

Filed:

Nov 28, 2018

Appl. No.:

16/203299

Inventors:

- Greenbelt MD, US
Feng Zhang - Greenbelt MD, US
Chen Chen - Burlingame CA, US
Beibei Wang - Clarksville MD, US
Chenshu Wu - Greenbelt MD, US
Hangfang Zhang - Greenbelt MD, US
Chau-Wai Wong - Raleigh NC, US
David N. Claffey - Somerville MA, US
Chun-I Chen - Brookville MD, US
Hung-Quoc Duc Lai - Parkville MD, US
Min Wu - Clarksville MD, US
Yi Han - Ellicott City MD, US
Oscar Chi-Lim Au - San Jose CA, US
K. J. Ray Liu - Potomac MD, US

Assignee:

ORIGIN WIRELESS, INC. - Greenbelt MD

International Classification:

H04L 27/36
H04B 1/38
H04W 72/04

Abstract:

Apparatus, systems and methods for recognizing and classifying events in a venue based on a wireless signal are disclosed. In one example, a disclosed system comprises a first transmitter, a second transmitter, at least one first receiver, at least one second receiver, and an event recognition engine, in the venue. The first transmitter transmits a training wireless signal through a wireless multipath channel impacted by a known event in the venue in a training time period associated with the known event. Each first receiver receives asynchronously the training wireless signal, and obtains, asynchronously based on the training wireless signal, at least one time series of training channel information of the wireless multipath channel between the first receiver and the first transmitter. The second transmitter transmits a current wireless signal through the wireless multipath channel impacted by a current event in a current time period associated with the current event. Each second receiver receives asynchronously the current wireless signal, and obtains, asynchronously based on the current wireless signal, at least one time series of current channel information of the wireless multipath channel between the second receiver and the second transmitter. The event recognition engine trains a classifier based on the training channel information; and apples the classifier to: classify the current channel information and associate the current event with at least one of: a known event, an unknown event and another event.

US Patent:

20190020530, Jan 17, 2019

Filed:

Sep 9, 2018

Appl. No.:

16/125748

Inventors:

- Greenbelt MD, US
Masato MARUMO - Tokyo, JP
Beibei WANG - Clarksville MD, US
Hung-Quoc Duc LAI - Parkville MD, US
K. J. Ray LIU - Potomac MD, US
Chen CHEN - Burlingame CA, US
Qinyi XU - College Park MD, US
Yi HAN - Ellicott City MD, US
Feng ZHANG - Greenbelt MD, US
Zoltan SAFAR - Ellicott City MD, US

Assignee:

ORIGIN WIRELESS, INC. - Greenbelt MD

International Classification:

H04L 27/36
H04W 72/04
H04B 1/38

Abstract:

The present teaching relates to wireless Internet of Things. In one example, a time reversal client is disclosed. The time reversal client comprises a processor, a memory communicatively coupled with the processor, and a set of instructions, when executed by the processor based on the memory, that cause the time reversal client to perform the following steps: communicatively coupling with a time reversal server through a network, obtaining a set of channel state information (CSI), wherein the set of CSI is captured when at least one probing signal is sent from the wireless transmitter to the wireless receiver through a wireless multipath channel associated with a space, and causing the set of CSI to be sent to the time reversal server through the network.

US Patent:

20180365975, Dec 20, 2018

Filed:

Dec 9, 2016

Appl. No.:

16/060710

Inventors:

- Greenbelt MD, US
Feng Zhang - Greenbelt MD, US
Chen Chen - College Park MD, US
Beibei Wang - Clarksville MD, US
Zoltan Safar - Ellicott City MD, US
Yi Han - Ellicott City MD, US
Hung-Quoc Duc Lai - Parkville MD, US
K. J. Ray Liu - Potomac MD, US

International Classification:

G08B 29/18
G08B 13/181
H04B 7/06
G01S 13/00
G01S 13/56

Abstract:

An apparatus for detecting events includes a processor and a storage device storing instructions that when executed by the processor cause the processor to train a classifier for classifying channel state information (CSI) and detecting an event based on the classification of the CSI obtained during a monitoring phase. The training of the classifier includes: for each of the known events to be detected, during a time period in which the known event occurs in a venue, obtain training CSI of a wireless multipath channel between a wireless transmitter and a wireless receiver in the venue, in which the training CSI is derived from one or more probing signals sent from the transmitter through the wireless multipath channel to the receiver, and train the classifier based on the known events and the training CSI associated with each of the events.