CPC Subgroup Additional Only
G09G 2300/0842 forming a memory circuit, e.g. a dynamic memory with one capacitor
Full Title
Aspects of the constitution of display devices > Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements > Several active elements per pixel in active matrix panels > forming a memory circuit, e.g. a dynamic memory with one capacitor
4 direct subcodes
Child Classifications
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- G09G 2300/0847 being a dynamic memory without any storage capacitor, i.e. with use of parasitic capacitances as storage elements
- G09G 2300/0852 being a dynamic memory with more than one capacitor
- G09G 2300/0857 Static memory circuit, e.g. flip-flop
- G09G 2300/0861 with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
Top Applicants
Top 10 applicants by patent filingsfor class G09, 2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG DISPLAY KR 22,477
- BOE TECHNOLOGY GROUP COMPANY CN 16,016
- BOE TECHNOLOGY GROUP COMPANY 12,918
- LG DISPLAY COMPANY KR 12,599
- SAMSUNG ELECTRONICS COMPANY KR 12,009
- SAMSUNG DISPLAY 6,252
- SEMICONDUCTOR ENERGY LABORATORY COMPANY JP 4,410
- SONY CORPORATION JP 3,965
- LG ELECTRONICS KR 3,901
- LG DISPLAY COMPANY 3,705