Christopher R Hauf

US Patent:

20100103438, Apr 29, 2010

Filed:

Oct 24, 2008

Appl. No.:

12/257417

Inventors:

Christopher R. Hauf - Pittsford NY, US
Kevin E. Spaulding - Spencerport NY, US
Douglas W. Couwenhoven - Fairport NY, US

International Classification:

H04N 1/60

US Classification:

358 19

Abstract:

A method for selecting the level of color inconstancy of an output image produced on a digital color printer having a neutral ink and a plurality of color inks is disclosed. The method includes analyzing the distribution of input colors present in the input digital image to determine a color distribution metric related to the importance of producing output images having a reduced color inconstancy when the output image is viewed under a variety of image illumination spectra; selecting a color transform from a set of available color transforms designed to produce output images having different color inconstancy characteristics in response to the color distribution metric; processing the input digital image using the selected color transform to produce a transformed image having a selected level of color inconstancy; and printing the transformed image on the digital color printer to produce an output image having the selected level of color inconstancy.

US Patent:

20210167339, Jun 3, 2021

Filed:

Feb 10, 2021

Appl. No.:

17/248858

Inventors:

- Newark CA, US
Lucas D. Barkley - Lexington KY, US
Christopher R. Hauf - Belmont CA, US
Eliyahu Vronsky - Los Altos CA, US
Conor F. Madigan - San Francisco CA, US
Gregory Lewis - Menlo Park CA, US
Alexander Sou-Kang Ko - Santa Clara CA, US
Valerie Gassend - East Palo Alto CA, US

Assignee:

Kateeva, Inc. - Newark CA

International Classification:

H01L 51/56
B41J 2/045
B41J 2/205
B41J 2/01
H01L 51/00

Abstract:

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different printhead/substrate scan offsets, offsets between printheads, the use of different nozzle drive waveforms, and/or other techniques. These combinations can be based on repeated, rapid droplet measurements that develop understandings for each nozzle of means and spreads for expected droplet volume, velocity and trajectory, with combinations of droplets being planned based on these statistical parameters. Optionally, random fill variation can be introduced so as to mitigate Mura effects in a finished display device. The disclosed techniques have many possible applications.

US Patent:

20200381675, Dec 3, 2020

Filed:

Aug 21, 2020

Appl. No.:

16/947880

Inventors:

- Newark CA, US
Lucas D. Barkley - Lexington KY, US
Christopher R. Hauf - Belmont CA, US
Eliyahu Vronsky - Los Altos CA, US
Conor F. Madigan - San Francisco CA, US

Assignee:

Kateeva, Inc. - Newark CA

International Classification:

H01L 51/56
B41J 2/045
B41J 2/205
B41J 2/01
H01L 51/00

Abstract:

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different print head/substrate scan offsets, offsets between print heads, the use of different nozzle drive waveforms, and/or other techniques. Optionally, patterns of fill variation can be introduced so as to mitigate observable line effects in a finished display device. The disclosed techniques have many other possible applications.

US Patent:

20200028126, Jan 23, 2020

Filed:

Aug 9, 2019

Appl. No.:

16/536654

Inventors:

- Newark CA, US
Lucas D. Barkley - Lexington KY, US
Christopher R. Hauf - Belmont CA, US
Eliyahu Vronsky - Los Altos CA, US
Conor F. Madigan - San Francisco CA, US
Gregory Lewis - Menlo Park CA, US
Alexander Sou-Kang Ko - Santa Clara CA, US
Valerie Gassend - East Palo Atlo CA, US

Assignee:

Kateeva, Inc. - Newark CA

International Classification:

H01L 51/56
B41J 2/045
B41J 2/205
B41J 2/01
H01L 51/00

Abstract:

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different printhead/substrate scan offsets, offsets between printheads, the use of different nozzle drive waveforms, and/or other techniques. These combinations can be based on repeated, rapid droplet measurements that develop understandings for each nozzle of means and spreads for expected droplet volume, velocity and trajectory, with combinations of droplets being planned based on these statistical parameters. Optionally, random fill variation can be introduced so as to mitigate Mura effects in a finished display device. The disclosed techniques have many possible applications.

US Patent:

20190252646, Aug 15, 2019

Filed:

Sep 27, 2017

Appl. No.:

15/716753

Inventors:

- Newark CA, US
Lucas D. Barkley - Lexington KY, US
Christopher R. Hauf - Belmont CA, US
Eliyahu Vronsky - Los Altos CA, US
Conor F. Madigan - San Francisco CA, US
Gregory Lewis - Menlo Park CA, US
Alexander Sou-Kang Ko - Santa Clara CA, US
Valerie Gassend - East Palo Atlo CA, US

International Classification:

H01L 51/56
B41J 2/045
B41J 2/205
H01L 51/00
B41J 2/01

Abstract:

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different printhead/substrate scan offsets, offsets between printheads, the use of different nozzle drive waveforms, and/or other techniques. These combinations can be based on repeated, rapid droplet measurements that develop understandings for each nozzle of means and spreads for expected droplet volume, velocity and trajectory, with combinations of droplets being planned based on these statistical parameters. Optionally, random fill variation can be introduced so as to mitigate Mura effects in a finished display device. The disclosed techniques have many possible applications.

US Patent:

20190074484, Mar 7, 2019

Filed:

Oct 29, 2018

Appl. No.:

16/174063

Inventors:

- Newark CA, US
Lucas D. Barkley - Lexington KY, US
Christopher R. Hauf - Belmont CA, US
Eliyahu Vronsky - Los Altos CA, US
Conor F. Madigan - San Francisco CA, US

Assignee:

Kateeva, Inc. - Newark CA

International Classification:

H01L 51/56
B41J 2/205
B41J 2/045
B41J 2/01
H01L 51/00

Abstract:

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different print head/substrate scan offsets, offsets between print heads, the use of different nozzle drive waveforms, and/or other techniques. Optionally, patterns of fill variation can be introduced so as to mitigate observable line effects in a finished display device. The disclosed techniques have many other possible applications.

US Patent:

20170170435, Jun 15, 2017

Filed:

Nov 28, 2016

Appl. No.:

15/361845

Inventors:

- Newark CA, US
Lucas D. Barkley - Mountain View CA, US
Christopher R. Hauf - Belmont CA, US
Eliyahu Vronsky - Los Altos CA, US
Conor F. Madigan - San Francisco CA, US

International Classification:

H01L 51/56
B41J 2/01
B41J 2/045
H01L 51/00

Abstract:

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different print head/substrate scan offsets, offsets between print heads, the use of different nozzle drive waveforms, and/or other techniques. Optionally, patterns of fill variation can be introduced so as to mitigate observable line effects in a finished display device. The disclosed techniques have many other possible applications.

US Patent:

20170157949, Jun 8, 2017

Filed:

Dec 2, 2016

Appl. No.:

15/368290

Inventors:

- Newark CA, US
Christopher R. Hauf - Belmont CA, US

Assignee:

Kateeva, Inc. - Newark CA

International Classification:

B41J 3/407
H01L 31/048
H01L 51/56
H01L 51/00
H01L 51/52

Abstract:

Improved manufacturing using a printer that deposits a liquid to fabricate a layer having specified thickness includes automated adjustment or print parameters based on ink or substrate characteristics which have been specifically measured or estimated. In one embodiment, ink spreading characteristics are used to select droplet size used to produce a particular layer, and/or to select a specific baseline volume/area or droplet density that is then scaled and/or adjusted to provide for layer homogeneity. In a second embodiment, expected per-droplet particulars are used to interleave droplets in order to carefully control melding of deposited droplets, and so assist with layer homogeneity. The liquid layer is then cured or baked to provide for a permanent structure.