Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 14, 2023
Patent Application Number
17751946
Date Filed
May 24, 2022
Patent Citations
Patent Primary Examiner
CPC Code
The present invention provides improved driving methods for four particle electrophoretic displays. The driving methods improve the color state performance when a first pixel is displaying a mixed state of a first highly-charged particle and a second lower-charged particle of the opposite polarity, while a neighboring pixel is displaying a state of a second highly-charged particle having the opposite polarity to the first highly-charged particle. The particles can be, for example, all reflective or one type of particle can be partially light transmissive.
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