P

Inventor

TIAN KEHAN

CN56 patents
⚠️ This page may combine multiple inventors who share the name “TIAN KEHAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD

21 patents
US12124069B1Oct 22, 2024

Optical waveguide and display device

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD2 citations73
US11988861B1May 21, 2024

Diffractive optical waveguide and display device

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD3 citations72
US11874488B1Jan 16, 2024

Diffractive optical waveguide and display apparatus having same

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD5 citations72
US11846785B1Dec 19, 2023

Diffraction optical waveguide and grating structure thereof, and display device

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD2 citations71
US11796747B2Oct 24, 2023

Diffractive optical waveguide and display device

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD2 citations71
US11988838B2May 21, 2024

Diffractive optical waveguide and display device

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD2 citations68
US12111474B2Oct 8, 2024

Grating structure, diffraction optical waveguide, and display device

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD1 citations61
US11774767B1Oct 3, 2023

Diffractive optical waveguide and display device

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD1 citations59
US11668928B2Jun 6, 2023

Diffractive optical element capable of being used for projecting oblique line, projection apparatus, and design method therefor

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations56
US12461367B2Nov 4, 2025

Near-eye display waveguide device and near-eye display apparatus

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations51
US12436385B2Oct 7, 2025

Diffractive optical waveguide, design method for diffractive optical waveguide, and display device

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations51
US11966060B1Apr 23, 2024

Optical waveguide device for display and display device having the same

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations51
US11841523B2Dec 12, 2023

Diffractive optical waveguide and display device

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations51
US12265217B2Apr 1, 2025

Display device and glasses

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations50
US12228729B2Feb 18, 2025

Method for designing diffractive optical element and partitioned uniform light illumination system

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations50
US12085762B2Sep 10, 2024

Optical waveguide device for image display and display device having the same

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations50
US11940653B2Mar 26, 2024

Diffractive optical waveguide and display device having the same

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations50
US11899203B1Feb 13, 2024

Method for out-coupling grating for AR optical waveguide, and design method for AR optical waveguide

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations50
US11892682B2Feb 6, 2024

Diffractive optical waveguide and display device having the same preliminary class

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations50
US11693253B2Jul 4, 2023

Method for designing diffraction suppression optical component, display screen and under-screen camera apparatus

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations50
US11874503B1Jan 16, 2024

Diffractive optical waveguide and display device

JIAXING UPHOTON OPTOELECTRONICS TECH CO LTD0 citations49

IBM

16 patents
US9651856B2May 16, 2017

Source, target and mask optimization by incorporating contour based assessments and integration over process variations

IBM5 citations84
US8372565B2Feb 12, 2013

Method for optimizing source and mask to control line width roughness and image log slope

IBM12 citations84
US11036126B2Jun 15, 2021

Semiconductor fabrication design rule loophole checking for design for manufacturability optimization

IBM4 citations73
US10585346B2Mar 10, 2020

Semiconductor fabrication design rule loophole checking for design for manufacturability optimization

IBM3 citations73
US10394116B2Aug 27, 2019

Semiconductor fabrication design rule loophole checking for design for manufacturability optimization

IBM2 citations73
US8954898B2Feb 10, 2015

Source-mask optimization for a lithography process

IBM5 citations73
US8351037B2Jan 8, 2013

Method to match exposure tools using a programmable illuminator

IBM5 citations73
US8028254B2Sep 27, 2011

Determining manufacturability of lithographic mask using continuous derivatives characterizing the manufacturability on a continuous scale

IBM7 citations73
US9250535B2Feb 2, 2016

Source, target and mask optimization by incorporating countour based assessments and integration over process variations

IBM2 citations63
US8959462B2Feb 17, 2015

Mask design method, program, and mask design system

IBM2 citations63
US7969554B2Jun 28, 2011

Method, computer program, apparatus and system providing printing for an illumination mask for three-dimensional images

IBM4 citations62
US7944545B2May 17, 2011

High contrast lithographic masks

IBM4 citations62
US9857676B2Jan 2, 2018

Method and program product for designing source and mask for lithography

IBM0 citations52
US9741722B2Aug 22, 2017

Dummy gate structure for electrical isolation of a fin DRAM

IBM0 citations52
US9564445B2Feb 7, 2017

Dummy gate structure for electrical isolation of a fin DRAM

IBM0 citations52
US8056023B2Nov 8, 2011

Determining manufacturability of lithographic mask by reducing target edge pairs used in determining a manufacturing penalty of the lithographic mask

IBM1 citations49

BAGHERI SAEED

4 patents

LIU YING

2 patents

INOUE TADANOBU

2 patents

GLOBALFOUNDRIES INC

1 patent

TIRAPU-AZPIROZ JAIONE

1 patent

GIL DARIO

1 patent

HANGZHOU UPHOTON OPTOELECTRONICS TECH CO LTD

1 patent

JIANG JING

1 patent

Showing the top 50 of 56 patents by PatentIndex Score.