Dong Zheng

US Patent:

7485486, Feb 3, 2009

Filed:

Sep 18, 2006

Appl. No.:

11/532762

Inventors:

Dong Zheng - San Jose CA, US
Phillip J. Benzel - Pleasanton CA, US
Joy Jones - Fremont CA, US
Alexander Kalnitsky - San Francisco CA, US
Perumal Ratman - Fremont CA, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

H01L 21/00

US Classification:

438 48, 438142, 438208, 438309, 438356, 257E25001, 257E25032

Abstract:

A method of a fabricating a multiple wavelength adapted photodiode and resulting photodiode includes the steps of providing a substrate having a first semiconductor type surface region on at least a portion thereof, implanting and forming a second semiconductor type shallow surface layer into the surface region, and forming a multi-layer anti-reflective coating (ARC) on the shallow surface layer. The forming step includes depositing or forming a thin oxide layer on the shallow surface layer and depositing a second dielectric layer different from the thin oxide layer on the thin oxide layer. An etch stop is formed on the second dielectric, wherein the etch stop includes at least one layer resistant to oxide etch. At least one oxide including layer (e. g. ILD) is then deposited on the etch stop.

US Patent:

7528818, May 5, 2009

Filed:

Sep 28, 2005

Appl. No.:

11/237075

Inventors:

Dong Zheng - San Jose CA, US
Barry Harvey - Los Altos CA, US
Brian B. North - Los Gatos CA, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

G09G 3/36

US Classification:

345 99, 345 98, 345 94, 345 76

Abstract:

An apparatus and method for controlling the operation of a utility device, such as a cold cathode fluorescent lamp that is powered in accordance with a pulse width modulation (PWM) signal, includes an analog sensor which monitors the utility device to derive an output signal representative of the PWM signal. An integrating analog-to-digital converter (ADC), which is coupled to the sensor and has its operation synchronized with an integral multiple of the period of the PWM signal, produces an output representative of an average of the output of the utility device.

US Patent:

7546397, Jun 9, 2009

Filed:

Jan 19, 2007

Appl. No.:

11/625116

Inventors:

Theodore D. Rees - Mountain View CA, US
D. Stuart Smith - San Jose CA, US
Dong Zheng - San Jose CA, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

G06F 3/00
G06F 13/28
G06F 1/00
G06F 13/12
G06F 13/38
G06F 11/00
G03F 1/00
G11C 5/00
H04N 7/167

US Classification:

710 36, 710 3, 710 22, 710 74, 430 5, 714 32, 365 52, 380217, 713300

Abstract:

Methods and systems for allowing multiple devices to share the same serial lines (e. g. , SDIO, SEN and SCLK) are provided. Such devices can be located, e. g. , on an optical pick-up unit. Each device includes a serial interface, a device enable number (DEN) that differs from the DEN of each other device, and a plurality of registers, with at least one register being designated a device select register (DSR). The DSRs of the plurality of devices share a common address. The plurality of serial interfaces are collectively enabled and collectively disabled (e. g. , via the SEN line). However, only one of the plurality of serial interfaces can be selected at one time, with the remaining of the plurality of serial interfaces being deselected. The serial interface of a device is selected when the DEN of the device is the same as the content of the DSR of the device, and deselected when the DEN of the device is not the same as the content of the DSR of the device.

US Patent:

7635836, Dec 22, 2009

Filed:

Sep 28, 2007

Appl. No.:

11/863858

Inventors:

Dong Zheng - San Jose CA, US
Daryl Chamberlin - San Jose CA, US

Assignee:

Intersil Americas Inc. - Milipitas CA

International Classification:

G01J 1/44
G02B 5/32

US Classification:

2502082, 369 4437

Abstract:

A configurable photo detector circuit includes a photo detector array having a plurality of photo detectors. A switching matrix includes a first plurality of inputs coupled to outputs of the plurality of photo detector, a second plurality of inputs, and a plurality of matrix outputs. A controller is coupled to the second plurality of inputs of the switching matrix for configuring the switching matrix. The controller is operable to receive programmed commands for configuring the switching matrix. An output block having a plurality of inputs is coupled to receive the plurality of matrix outputs and a plurality of outputs, wherein electrical signals from the plurality of photo detectors are directed to respective ones of the plurality of outputs based on the switching matrix.

US Patent:

7663087, Feb 16, 2010

Filed:

May 14, 2007

Appl. No.:

11/748237

Inventors:

Dong Zheng - San Jose CA, US
Daryl Chamberlin - San Jose CA, US
Hung Chou - Fremont CA, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

G02B 6/42

US Classification:

250214R, 359 15

Abstract:

A dynamically configurable multiple wavelength adapted photodetector (PD) integrated circuit includes a PD array having a center bank of electrically isolated PD sections, and a first and a second side channel bank of electrically isolated PD sections on opposing sides of the center PD bank for receiving light and outputting electrical signals. A dynamically configurable switching matrix having a first plurality of inputs is coupled to outputs of the PD sections and a second plurality of inputs is provided for receiving control signals which select from a plurality of different switch configurations. The switch configurations set which of the PD sections are coupled to particular ones of a plurality of matrix outputs provided by the switching matrix. A structure providing switching matrix configuration information is coupled to the second plurality of inputs of the switching matrix to selects specific ones from the plurality of different switch configurations. An output block comprising a plurality of amplifiers is coupled to the plurality of matrix outputs for providing a plurality of amplified outputs, wherein dynamically adjustable combinations of electrical signals from the PD sections are directed to the plurality of amplifiers based on the switch configuration.

US Patent:

7907115, Mar 15, 2011

Filed:

Mar 23, 2009

Appl. No.:

12/409238

Inventors:

Dong Zheng - San Jose CA, US
Barry Harvey - Los Altos CA, US
Brian V. North - Los Gatos CA, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

G09G 3/36

US Classification:

345102, 345212, 345204, 345 99, 345 76

Abstract:

An apparatus and method for controlling the operation of a utility device, such as a cold cathode fluorescent lamp that is powered in accordance with a pulse width modulation (PWM) signal, includes an analog sensor which monitors the utility device to derive an output signal representative of the PWM signal. An integrating analog-to-digital converter (ADC), which is coupled to the sensor and has its operation synchronized with an integral multiple of the period of the PWM signal, produces an output representative of an average of the output of the utility device.

US Patent:

7952062, May 31, 2011

Filed:

Jan 13, 2010

Appl. No.:

12/687084

Inventors:

Dong Zheng - San Jose CA, US
Daryl Chamberlin - San Jose CA, US
Hung Chou - Fremont CA, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

G11B 7/00
G01J 1/44

US Classification:

250214R, 359 15, 369103

Abstract:

A photodetector integrated circuit (PDIC) capable of being used with at least two different types of optical discs includes a photodetector (PD) array and a switch matrix. The PD array includes a center channel PD and a side channel PD electrically isolated from the center channel PD. The switch matrix, which includes a plurality of inputs and a plurality of outputs, can be selectively configured in a plurality of different switch configurations. The side channel PD includes a plurality of electrically isolated PD sections. Each electrically isolated PD section of the side channel PD is adapted to detect light and provide an electrical output signal, indicative of the light detected by the PD section, to a different one of the inputs of the switch matrix. The switch matrix is adapted to combine the electrical output signals provided by the electrically isolated PD sections of the side channel PD in a plurality of different manners, in dependence on which of the plurality of different switch configurations is selected.

US Patent:

7956432, Jun 7, 2011

Filed:

Feb 3, 2009

Appl. No.:

12/365141

Inventors:

Dong Zheng - San Jose CA, US
Phillip J. Benzel - Pleasanton CA, US
Joy Jones - Fremont CA, US
Alexander Kalnitsky - San Francisco CA, US
Perumal Ratnam - Fremont CA, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

H01L 21/02

US Classification:

257437, 257434, 257760, 438 48, 438142, 438208

Abstract:

A photodiode includes a substrate having a first semiconductor type surface region on at least a portion thereof, and a second semiconductor type surface layer formed in a portion of the surface region. A multi-layer anti-reflective coating (ARC) is on the second semiconductor type surface layer, wherein the multi-layer ARC comprises at least two different dielectric layers. A layer resistant to oxide etch is above a peripheral portion the multi-layer ARC. Further layers are above the layer resistant to oxide etch, and thereby above the peripheral portion the multi-layer ARC. A window extends down to the multi-layer ARC. A photodiode region is formed by a pn-junction of the first semiconductor type surface region and the second semiconductor type surface layer.