Invention Grant
- Patent Title: Electrophoretic display device and driving method thereof
- Patent Title (中): 电泳显示装置及其驱动方法
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Application No.: US14028391Application Date: 2013-09-16
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Publication No.: US09177511B2Publication Date: 2015-11-03
- Inventor: Tetsushi Sato , Michiaki Sakamoto
- Applicant: NLT Technologies, Ltd.
- Applicant Address: JP Kanagawa
- Assignee: NLT TECHNOLOGIES, LTD.
- Current Assignee: NLT TECHNOLOGIES, LTD.
- Current Assignee Address: JP Kanagawa
- Agency: Young & Thompson
- Priority: JP2012-202310 20120914; JP2013-147478 20130716
- Main IPC: G09G3/34
- IPC: G09G3/34 ; G09G3/20 ; G02F1/167

Abstract:
An electrophoretic display device is provided, in which an image update period is constituted with a reset period including at least a stirring pulse for stirring electrophoretic particles and a compensation pulse for suppressing accumulation of the residual DC component and with a set period including a set pulse for applying, to intended pixels, a voltage of polarity for making transition to black or white for a prescribed amount of time according to a next image. The voltage waveforms for each display gradation are so designed that a period where a positive voltage is applied to a counter electrode and a period where a negative voltage is applied do not overlap with each other, and a compensation pulse is applied after the stirring pulse which sets all the pixels of the display unit to a white or black base state. Thereby, changes in the display state are not visually recognized.
Public/Granted literature
- US20140078035A1 ELECTROPHORETIC DISPLAY DEVICE AND DRIVING METHOD THEREOF Public/Granted day:2014-03-20
Information query
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