G02F 1/01 for the control of the intensity, phase, polarisation or colour (G02F1/29, G02F1/35 take precedence)
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 (G02F1/29, G02F1/35 take precedence)
Filing statistics
CPC G02F 1/01 belongs to the parent subclass G02F, which recorded 256,497 patent applications worldwide between 2013 and 2023. Annual filings declined from 20,929 in 2013 to 16,823 in 2023 (-20%), peaking at 28,806 applications in 2017. The most active applicants in class G02 are SAMSUNG DISPLAY (14,409 applications), BOE TECHNOLOGY GROUP COMPANY (14,236 applications) and BOE TECHNOLOGY GROUP COMPANY (11,826 applications).
Source: EPO PATSTAT, worldwide filings
21 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 (G02F1/03 takes precedence)
- G02F 1/03 based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect (G02F1/061 takes precedence)
- G02F 1/061 based on electro-optical organic material (G02F1/07, take precedence)
- 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 (acousto-optical deflection G02F1/33)
- 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 G02F1/015 - G02F1/169
- G02F 1/19 based on variable-reflection or variable-refraction elements not provided for in groups G02F1/015 - G02F1/169
- G02F 1/21 by interference
Top Applicants
Top 10 applicants by patent filingsfor class G02, 2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG DISPLAY KR 14,409
- BOE TECHNOLOGY GROUP COMPANY CN 14,236
- BOE TECHNOLOGY GROUP COMPANY 11,826
- SAMSUNG ELECTRONICS COMPANY KR 10,141
- FUJIFILM JP 8,506
- LG DISPLAY COMPANY KR 7,558
- NITTO DENKO CORPORATION JP 6,306
- OLYMPUS CORPORATION JP 5,336
- SONY CORPORATION JP 5,097
- CANON JP 4,814