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Electrophoretic display device and driving method thereof

A technology of electrophoretic display and equipment, applied in static indicators, nonlinear optics, instruments, etc., can solve the problems of charging damage, image burning, etc.

Active Publication Date: 2013-05-22
NEC LCD TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it was found that charging damage occurred in the electrophoretic film, and even if the display of the image was terminated by applying 0V, the problem of image burn-in was still caused, and a reversed image showing only the charged portion was displayed

Method used

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  • Electrophoretic display device and driving method thereof
  • Electrophoretic display device and driving method thereof
  • Electrophoretic display device and driving method thereof

Examples

Experimental program
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Effect test

no. 1 example

[0108] figure 1 It is a schematic circuit diagram for showing the structure of the driving circuit of the electrophoretic display device according to the first embodiment of the present invention. figure 2 It is a schematic circuit diagram showing the structure of the data driver 14A of the electrophoretic display device 10A according to the first embodiment. image 3 It is a diagram showing the driving waveforms of the data driver 14A of the electrophoretic display device 10A according to the first embodiment. Figure 4 It is a schematic diagram explaining the effect obtained when the black state as the filter state is inserted between the white state and the subsequent white state in the driving operation performed in the electrophoretic display device 10A according to the first embodiment. Figure 5 It is a diagram showing a change in the display state in driving the electrophoretic display device 10A according to the first embodiment. Image 6 This is a diagram showing a stat...

no. 2 example

[0136] Picture 9 It is a waveform diagram showing the voltage applied to the counter electrode in driving the electrophoretic display device according to the second embodiment of the present invention.

[0137] The structure of the electrophoretic display device of the second embodiment is obviously different from the structure used in the first embodiment in that it drives the electrophoretic element of the electrophoretic display device by using binary driving. More specifically, the driving method adopted in each embodiment is a dot inversion driving method in which the COM (common) voltage does not swing, that is, Vcom=0V, and the H driver (data driver) is used as a ternary driver, The three-value driver uses +15V, 0V and -15V three-value voltage (see Figure 8 ). In other words, the three-value driver always keeps the voltage of the counter electrode (COM voltage) at 0V, sets the voltage of the pixel electrode in the white frame to -15V, and sets the voltage value of the pi...

no. 3 example

[0141] Picture 10 Is a diagram showing changes in driving the electrophoretic display device according to the third embodiment of the present invention. Picture 11 Is a diagram showing waveforms explaining the driving of the electrophoretic display device according to the third embodiment of the present invention. Picture 12 It is a time chart explaining the brightness state in the first and second embodiments. Figure 13 It is a time chart explaining the brightness state in the third embodiment. The structure of the electrophoretic display device of the third embodiment is significantly different from the structure adopted in the first and second embodiments in that it prevents entry into the structure that appears in the first and second embodiments when switching screens. The flashing display status.

[0142] That is, in the electrophoretic display device of the third embodiment, when the display is switched from W (white) to B (black) and then to W (white), the black frame ...

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Abstract

An electrophoretic display device is provided which is capable of preventing an afterimage and an image burn-in. Frames to make electrophoretic elements making up pictures of an active-matrix and a microcapsule-type electrophoretic display device be driven are divided into a plurality of white frames and black frames. The number of white frames to be used for writing on the electrophoretic elements by using a scanning driver and a data driver on one picture or between pictures is made to be equal to the number of black frames to be used for the writing and writing frames for particles having slow mobility responsive to variation in an electric field is provided last in the formation of the picture.

Description

[0001] This application is a divisional application for an invention patent application with an application number of "200610170057.1", an application date of "December 15, 2006", and an invention title of "Electrophoretic Display Device and Its Driving Method". Technical field [0002] The present invention relates to an electrophoretic display device and a driving method thereof, and more specifically, to an electrophoretic display device and a driving method thereof that can provide a good display by preventing afterimage and / or image burn-in. [0003] This application claims the priority of Japanese Patent Application Nos. 2005-362318 filed on December 15, 2005 and 2005-378274 filed on December 28, 2005, the entire contents of which are incorporated herein by reference. Background technique [0004] In electronic display devices, as an example of an electronic display that allows e-books and e-newspapers to be read by human eyes without causing eye pressure, etc., the development...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
CPCG09G2320/046G09G2320/0204G09G2320/0257G09G3/3446G09G3/38G09G3/34G02F1/136G09G3/20
Inventor 坂本道昭
Owner NEC LCD TECH CORP