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Particles for display media and information display panel using the particles

A display medium and information display technology, which is applied in the direction of instruments, identification devices, etc., can solve problems such as failure to display, and achieve the effects of low driving voltage, high heat resistance, and excellent display quality

Inactive Publication Date: 2010-02-17
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] When using the above-mentioned monofunctional monomer as a resin raw material, the particles for display media are used in panels for information display, and there is a problem that the display cannot be displayed at high temperature.

Method used

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  • Particles for display media and information display panel using the particles
  • Particles for display media and information display panel using the particles
  • Particles for display media and information display panel using the particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0091] Hereinafter, examples and comparative examples of the present invention are shown, and the present invention will be further specifically described, but the present invention is not limited to the following examples. For the information display panels of the examples and comparative examples, the information obtained by sealing the particles produced by the following method into the space between the panel substrates together with dry air with a humidity of 50% RH or less was evaluated according to the following criteria. Display panel.

[0092]

[0093]Particles for a positively charged black display medium were obtained by dispersing 3 parts by weight in 94 parts by weight of styrene monomer (Kanto Chemical) and 6 parts by weight of divinylbenzene (Kanto Chemical) as positive particles using a sand mill. Nigrosine compound (BONTRON NO7: manufactured by Orient Chemical) as a charge control agent and 5 parts by weight of carbon black (special black 5: manufactured by ...

manufacture example 2

[0094]

[0095] As particles for positively charged black display media, except that the styrene monomer was changed to 35 parts by weight, and the divinylbenzene was changed to 65 parts by weight, the same method as particle 1 was used to obtain a particle size in the range of 0.1 to 50 μm. , Particles 2 with an average particle diameter of about 10 μm. No glass transition temperature Tg was observed as determined by DSC.

manufacture example 3

[0096]

[0097] As particles for positively charged black display media, except that the styrene monomer was changed to 88 parts by weight, and the divinylbenzene was changed to 12 parts by weight, the same method as particle 1 was used to obtain a particle size in the range of 0.1 to 50 μm. , Particles 3 with an average particle diameter of about 10 μm. The glass transition temperature Tg measured by DSC was 80°C.

[0098]

[0099] As particles for positively charged black display media, except that the styrene monomer was changed to 76 parts by weight, and the divinylbenzene was changed to 24 parts by weight, the same method as particle 1 was used to obtain a particle size in the range of 0.1 to 50 μm. , Particles 4 with an average particle diameter of about 10 μm. The glass transition temperature Tg measured by DSC was 85°C.

[0100]

[0101] As particles for positively charged black display media, except that the styrene monomer was changed to 55 parts by weight, a...

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PUM

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Abstract

In the particles (3B,3W) for display media (3) constituting the display media used for an information display panel, in which the display media having optical reflectance and charge characteristics are sealed between two substrates (1,2), at least one substrate being transparent, and, in which the display media, to which an electrostatic field is applied, are made to move so as to display information such as an image, the particles for display media having a substantially circular shape produced by a suspension polymerization of particle materials including monomer, wherein a part of the monomer is a cross-linking monomer and an amount of the cross-linking monomer is not less than 10 parts by weight and less than 50 parts by weight. By using the particles mentioned above, it is possible toobtain high heat resistance and low drive voltage (drive electric field).

Description

technical field [0001] The present invention relates to a particle for a display medium and an information display panel using the same, wherein the particle for a display medium constitutes a display medium for a panel for information display, and at least one of the two panels for information display is transparent. A display medium having optical reflectivity and chargeability is enclosed between the substrates, and by applying an electric field to the display medium, the display medium is moved to display information such as images. Background technique [0002] Conventionally, as an information display device replacing a liquid crystal (LCD), an information display device using technologies such as an electrophoretic method, an electrochromatic display method, a thermal method, and a two-color particle rotation method has been proposed. [0003] Compared with LCD, these existing technologies are considered to be technologies that can be used for next-generation inexpens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F9/37
Inventor 大内隆生村田和也
Owner BRIDGESTONE CORP