Inventor

Changfeng Li

Inventor

Beijing, CN

Overview

4→

Patents

2013–2021

Patent span

Physics

Primary field (CPC G)

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G06Fprimary

G06FElectric digital data processing12%

G09GArrangements or circuits for control of indicating devices using static means to present variable information12%

H01LSemiconductor devices12%

H04LTransmission of digital information, e.g. telegraphic communication12%

H10KOrganic electric solid-state devices12%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%

G06KGraphical data reading6%

G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes6%

G06VImage or video recognition or understanding6%

G07FCoin-freed or like apparatus6%

PatentTitleYear

11,036,977Identity recognition display device, and array substrate and identity recognition circuit thereof2021 11,024,688Pixel structure, display panel and driving method of pixel structure2021 9,065,806'Internet based security information interaction apparatus and method'2015 8,608,064'Payment system and method of IC card and a multi-application IC card as well as a payment terminal'2013

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2013–2015Patents assigned to CHINA UNIONPAY CO LTD (2)· patent assignee history

2013–2015Patents assigned to HUI CHUNYE (2)· patent assignee history

2013–2015Patents assigned to LI CHUNHUAN (2)· patent assignee history

2013–2015Patents assigned to XU JINYAO (2)· patent assignee history

2013–2015Based in Shanghai, CN· patent location history

2021Patents assigned to BOE TECHNOLOGY GROUP CO LTD (2)· patent assignee history

2021Based in Beijing, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BOE TECHNOLOGY GROUP CO LTD	2	2021
CHINA UNIONPAY CO LTD	2	2013–2015
HUI CHUNYE	2	2013–2015
LI CHUNHUANself	2	2013–2015
XU JINYAO	2	2013–2015

Locations

Location	Patents	Span
Beijing, CN	2	2021
Shanghai, CN	2	2013–2015