G02F 1/01 for the control of the intensity, phase, polarisation or colour
Introduced: July 1974
Last revised: January 2006
Full Title
Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics > for the control of the intensity, phase, polarisation or colour
Classification Context
- Section:
- PHYSICS
- Class:
- OPTICS
- Subclass:
- OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
Filing statistics
IPC G02F 1/01 belongs to the parent subclass G02F, which recorded 278,767 patent applications worldwide between 2013 and 2023. Annual filings declined from 25,700 in 2013 to 19,539 in 2023 (-24%), peaking at 29,617 applications in 2017. The most active applicants in class G02 are BOE TECHNOLOGY GROUP COMPANY (13,460 applications), BOE TECHNOLOGY GROUP COMPANY (11,745 applications) and SAMSUNG DISPLAY (10,908 applications).
Source: EPO PATSTAT, worldwide filings
Related Keywords
14 direct subcodes
Child Classifications
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- G02F 1/015 based on semiconductor elements having potential barriers, e.g. having a PN or PIN junction
- G02F 1/03 based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect
- G02F 1/061 based on electro-optical organic material
- G02F 1/07 based on electro-optical liquids exhibiting Kerr effect
- G02F 1/09 based on magneto-optical elements, e.g. exhibiting Faraday effect
- G02F 1/11 based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
- G02F 1/13 based on liquid crystals, e.g. single liquid crystal display cells
- G02F 1/15 based on an electrochromic effect
- G02F 1/165 based on translational movement of particles in a fluid under the influence of an applied field
- G02F 1/169 based on orientable non-spherical particles having a common optical characteristic, e.g. suspended particles of reflective metal flakes
- G02F 1/17 based on variable-absorption elements not provided for in groups
- G02F 1/19 based on variable-reflection or variable-refraction elements not provided for in groups
- G02F 1/21 by interference
- G02F 1/23 for the control of the colour
Top Applicants
Top 10 applicants by patent filingsfor class G02, 2013–2023, worldwide · Source: EPO PATSTAT
- BOE TECHNOLOGY GROUP COMPANY 13,460
- BOE TECHNOLOGY GROUP COMPANY CN 11,745
- SAMSUNG DISPLAY KR 10,908
- CANON 9,072
- FUJIFILM JP 7,957
- SAMSUNG ELECTRONICS COMPANY KR 7,805
- LG DISPLAY COMPANY KR 6,558
- CHINESE ACADEMY OF SCIENCES 5,855
- NITTO DENKO CORPORATION JP 5,817
- OLYMPUS CORPORATION JP 4,579