Rong Hao Liu

US Patent:

7679473, Mar 16, 2010

Filed:

Jan 15, 2008

Appl. No.:

12/014725

Inventors:

Wenjiang Zeng - Sunnyvale CA, US
Rong Liu - Fremont CA, US
Yupeng Chen - Sunnyvale CA, US
Wang-Chang Albert Gu - Longwood FL, US

Assignee:

California Micro Devices - Milpitas CA

International Classification:

H03H 7/00

US Classification:

333176, 333167

Abstract:

The present invention relates to a low pass filter incorporating coupled inductors to enhance stop band attenuation. In one embodiment, the coupled inductors are provided along with various capacitors to provide for superior performance within a smaller surface area of a semiconductor or ceramic integrated device. In a further specific embodiment, the capacitors are formed on an integrated device within an area on which entirely intertwined inductors are formed. In another embodiment, at least one further pair of coupled inductors is included to create additional frequency attenuation notches, as well as a wide stop-band.

US Patent:

7808752, Oct 5, 2010

Filed:

Aug 17, 2005

Appl. No.:

11/206667

Inventors:

Dominick Richiuso - Saratoga CA, US
William N. Buchele - Los Gatos CA, US
Anguel Brankov - San Jose CA, US
Rong Liu - Fremont CA, US
John M. Jorgensen - Los Gatos CA, US

Assignee:

Semiconductor Components Industries, LLC - Phoenix AZ

International Classification:

H02H 9/00

US Classification:

361 56, 361 911, 361111, 361119

Abstract:

A method for implementing an inductor-capacitor filter in an integrated circuit. Embodiments of the invention implement a 5-pole LC low-pass filter suitable for incorporation in wireless applications necessitating compact layouts. Inductors are formed in an IC as concentric coils on metallization layers, the concentric coils providing a negative coupling coefficient between the inductors. The invention provides programmable frequency response characteristics, enabling the transmission of high-frequency base band information while attenuating carrier RF frequencies.

US Patent:

20090002669, Jan 1, 2009

Filed:

Jun 27, 2008

Appl. No.:

12/163645

Inventors:

Rong Liu - Pleasanton CA, US
Evan Palmer - Mountain View CA, US

Assignee:

Optical Associates, Inc. - San Jose CA

International Classification:

G03B 27/32
G03B 27/54

US Classification:

355 67, 355 77

Abstract:

An exposure apparatus for use in optical lithography can include a holder and a plurality of UV-LED modules carried by the holder and disposed in an array. A respective plurality of collimating lenses can be disposed in an array corresponding to the array of UV-LED modules. The plurality of UV-LED modules and the respective plurality of collimating lenses can provide a respective plurality of distinct beams of UV light. The plurality of collimating lenses may be spaced from the plurality of UV-LED modules and spaced from the exposure plane and have an optical configuration providing a composite beam of UV light formed from the plurality of distinct beams of UV light in which each beam inside the periphery of the array overlaps each adjacent beam by at least 70% at the exposure plane. A method for directing light onto an exposure plane in an optical lithography procedure is provided.

US Patent:

20120080803, Apr 5, 2012

Filed:

Oct 1, 2010

Appl. No.:

12/896416

Inventors:

Phillip Holland - Los Gatos CA, US
Rong Liu - San Jose CA, US
Umesh Sharma - Santa Clara CA, US
Der Min Liou - San Jose CA, US
David D. Marreiro - Chandler AZ, US
Sudhama C. Shastri - Phoenix AZ, US

International Classification:

H01L 23/52

US Classification:

257774, 257784, 438622, 257E23141, 257E21159

Abstract:

A semiconductor component and methods for manufacturing the semiconductor component that includes a three dimensional helically shaped common mode choke. In accordance with embodiments, a transient voltage suppression device may be coupled to the monolithically integrated common mode choke.

US Patent:

20220334431, Oct 20, 2022

Filed:

Aug 23, 2021

Appl. No.:

17/409458

Inventors:

- Cupertino CA, US
Wei Lv - San Jose CA, US
Pee Khiam So - San Jose CA, US
Wenyong Zhu - Saratoga CA, US
Rong Liu - Sunnyvale CA, US
Victor H. Yin - Cupertino CA, US
Mookyung Son - Cupertino CA, US
Jun Qi - San Jose CA, US
Yufeng Yan - Santa Clara CA, US
Shaofeng Liu - San Jose CA, US
Thomas O. Henry - San Francisco CA, US
Suraj P. Gorkhali - San Jose CA, US

International Classification:

G02F 1/13357

Abstract:

A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a direct-lit backlight unit. The backlight unit may include an array of light-emitting diodes on a printed circuit board. The backlight unit may include first, second, and third light spreading layers formed over the array of light-emitting diodes. A color conversion layer may be formed over the first, second, and third light spreading layers. First and second brightness enhancement films may be formed over the color conversion layer.

US Patent:

20220334432, Oct 20, 2022

Filed:

Aug 23, 2021

Appl. No.:

17/409467

Inventors:

- Cupertino CA, US
Yufeng Yan - Santa Clara CA, US
Qingbing Wang - Campbell CA, US
Chenhua You - San Jose CA, US
Rong Liu - Sunnyvale CA, US
Jun Qi - San Jose CA, US
Zhenyue Luo - Santa Clara CA, US
Mookyung Son - Cupertino CA, US
Victor H. Yin - Cupertino CA, US

International Classification:

G02F 1/13357
G02F 1/1335

Abstract:

A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a direct-lit backlight unit. The backlight unit may include an array of light-emitting diodes on a printed circuit board. The backlight unit may include first, second, and third light spreading layers formed over the array of light-emitting diodes. A color conversion layer may be formed over the first, second, and third light spreading layers. First and second brightness enhancement films may be formed over the color conversion layer.

US Patent:

20230093750, Mar 23, 2023

Filed:

Nov 4, 2021

Appl. No.:

17/519221

Inventors:

- Cupertino CA, US
Meizi Jiao - San Jose CA, US
Ling Han - Santa Clara CA, US
Chungjae Lee - San Jose CA, US
Ziruo Hong - San Jose CA, US
Wei He - Cupertino CA, US
Rong Liu - Sunnyvale CA, US
Xinyu Zhu - San Jose CA, US
Mingxia Gu - Campbell CA, US
Jun Qi - San Jose CA, US
Eric L. Benson - Hillsborough CA, US
Victor H. Yin - Cupertino CA, US

International Classification:

G02F 1/13357

Abstract:

A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a direct-lit backlight unit. The backlight unit may include an array of light-emitting diodes (LEDs) on a printed circuit board. The display may have a notch to accommodate an input-output component. Reflective layers may be included in the notch. The backlight may include a color conversion layer with a property that varies as a function of position. The light-emitting diodes may be covered by a slab of encapsulant with recesses in an upper surface.

US Patent:

20200357360, Nov 12, 2020

Filed:

May 8, 2019

Appl. No.:

16/406076

Inventors:

- Cupertino CA, US
Rong Liu - Sunnyvale CA, US

International Classification:

G09G 5/02

Abstract:

A display panel is calibrated to a target white point. A maximum luminance value of the display panel is attenuated from a first luminance value associated with the target white point to a second luminance value based on an attenuation factor. The second luminance value is equal to or lower than the first luminance value. The display panel is re-calibrated based on a chromaticity of the target white point and the second luminance value to generate calibration data. The calibration data is flashed into memory associated with the display panel. During operation, the white point of the panel may be shifted from the target to a chromatically imbalanced (e.g., reddish) white point that may cause motion-induced color trail or color breakup artifacts. The attenuated second luminance value ensures the motion-induced color trail or color breakup artifacts are adequately masked when the panel is driven with the chromatically imbalanced white point.