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CPC Subgroup
G09G 3/3233

with pixel circuitry controlling the current through the light-emitting element

Full Title

Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes > for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix > using controlled light sources > using electroluminescent panels > semiconductive, e.g. using light-emitting diodes [LED] > organic, e.g. using organic light-emitting diodes [OLED] > using an active matrix > with pixel circuitry controlling the current through the light-emitting element

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Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor class G09, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG DISPLAY KR 22,477
  2. BOE TECHNOLOGY GROUP COMPANY CN 16,016
  3. BOE TECHNOLOGY GROUP COMPANY 12,918
  4. LG DISPLAY COMPANY KR 12,599
  5. SAMSUNG ELECTRONICS COMPANY KR 12,009
  6. SAMSUNG DISPLAY 6,252
  7. SEMICONDUCTOR ENERGY LABORATORY COMPANY JP 4,410
  8. SONY CORPORATION JP 3,965
  9. LG ELECTRONICS KR 3,901
  10. LG DISPLAY COMPANY 3,705