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Electrophoretic display device and electronic apparatus

An electrophoretic display and electrophoresis technology, applied in static indicators, nonlinear optics, instruments, etc., can solve problems such as electrostatic potential difference and electrostatic damage, and achieve the effect of preventing electrostatic damage

Inactive Publication Date: 2009-12-02
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned device that performs display by supplying potentials to pixel electrodes separately from writing of image signals in the memory circuit, there is a technical problem as follows: A potential difference is applied to components such as transistors constituting switching circuits, storage circuits, etc. through the pixel electrodes, and as a result, the components may be damaged by static electricity

Method used

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  • Electrophoretic display device and electronic apparatus
  • Electrophoretic display device and electronic apparatus
  • Electrophoretic display device and electronic apparatus

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no. 1 Embodiment approach

[0056] For the electrophoretic display device in the first embodiment, refer to Figure 1 ~ Figure 4 Be explained.

[0057] First, regarding the overall configuration of the electrophoretic display device in this embodiment, refer to figure 1 Be explained.

[0058] figure 1 , is a block diagram showing the overall configuration of the electrophoretic display device in the first embodiment.

[0059] exist figure 1 Among them, the electrophoretic display device 1 in the first embodiment includes a display unit 3 , a controller 10 , a scanning line driving circuit 60 , a data line driving circuit 70 , a power supply circuit 210 , and a common potential supply circuit 220 .

[0060] In the display unit 3 , pixels 20 of m rows×n columns are arranged in a matrix (two-dimensional plane). In addition, in the display unit 3, m scanning lines 40 (ie, scanning lines Y1, Y2, . . . , Ym) and n data lines 50 (ie, data lines X1, X2, . set crosswise. Specifically, m scanning lines 40 e...

no. 2 Embodiment approach

[0119] Next, regarding the electrophoretic display device in the second embodiment, refer to Figure 8 Be explained. In addition, the second embodiment differs from the above-mentioned first embodiment in that the circuit configuration in each pixel is different, and the other configurations are basically the same. Therefore, in the second embodiment, parts different from those in the first embodiment will be described in detail, and descriptions of other configurations will be appropriately omitted.

[0120] Figure 8 , is an equivalent circuit diagram showing the electrical configuration of a pixel in the electrophoretic display device according to the second embodiment. Also, in Figure 8 in, in and shown in figure 2 Components that are the same as those in the first embodiment are denoted by the same reference numerals.

[0121] exist Figure 8 Among them, the pixel 20 in the electrophoretic display device of the second embodiment includes a pixel switching transist...

no. 3 Embodiment approach

[0128] Next, regarding the electrophoretic display device in the third embodiment, refer to Figure 9 Be explained. In addition, the third embodiment differs from the first and second embodiments described above in that the circuit configuration in each pixel is different, but the other configurations are basically the same. Therefore, in the third embodiment, parts different from those of the first and second embodiments will be described in detail, and descriptions of other configurations will be appropriately omitted.

[0129] Figure 9 , is an equivalent circuit diagram showing the electrical configuration of a pixel in the electrophoretic display device of the third embodiment. Also, in Figure 9 in, in and shown in figure 2 Components that are the same as those in the first embodiment are denoted by the same reference numerals.

[0130] exist Figure 9 Among them, the pixel 20 in the electrophoretic display device of the third embodiment includes a pixel switching t...

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Abstract

There is provided an electrophoretic display device that is formed by pinching an electrophoretic element containing electrophoretic particles between one pair of substrates. The electrophoretic display device includes a display unit that is formed of a plurality of pixels. One substrate of the one pair of substrates includes a pixel electrode and a pixel switching element that are formed for each of the plurality of pixels, a memory circuit that is electrically connected between the pixel electrode and the pixel switching element and can hold an image signal supplied through the pixel switching element, and an electrostatic protection unit that is electrically connected between the pixel electrode and the memory circuit and is formed of at least one of a capacitor element, a resistor element, and a diode.

Description

technical field [0001] The present invention relates to the technical field of electrophoretic display devices and electronic equipment equipped with the electrophoretic display devices. Background technique [0002] Such an electrophoretic display device has a display unit that performs display using a plurality of pixels as follows. In each pixel, after an image signal is written into the memory circuit by the pixel switching element, the pixel electrode is driven with a potential corresponding to the written image signal, and a potential difference is generated between the pixel electrode and the common electrode. Display is thereby performed by driving the electrophoretic element between the pixel electrode and the common electrode (for example, refer to Patent Document 1). [0003] Or, according to the research of the inventor of the present application, in order to drive the electrophoretic element, a pixel circuit will be constructed in each pixel, and the pixel circ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/167G09G3/34
CPCG09G2300/0857G09G2330/04G09G2300/0871G09G2300/088G09G2300/0876G09G3/344
Inventor 下平泰裕
Owner SEIKO EPSON CORP
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