MultiCorp International Inc (MCIC)

[4u2nv2]

Lets talk about Lee for a minute. Anyone wonder what he has been doing with his time. Try working. I really think this guy is way past a genius. Maybe an idiot when it comes to business but he just patented another device and it sounds really cool. And no it is not anything like the Harp. Maybe Bio-paper.

This is just some of the info on this e-paper.

Patent application title: ELECTRONIC PAPER DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF
Inventors: Sang-Moon Lee Hwan-Soo Lee Yongsoo Oh Jeong-Bok Kwak
Agents: MCDERMOTT WILL & EMERY LLP
Assignees:
Origin: WASHINGTON, DC US
IPC8 Class: AG02F1167FI
USPC Class: 359296
Patent application number: 20100033805


BACKGROUND

[0002]1. Technical Field

[0003]The present invention relates to an electronic paper display device and a method of manufacturing the electronic paper display device.

[0004]2. Description of the Related Art

[0005]Great changes are required today in ways of transmitting and sharing information, in correspondence with a new paradigm that is required in the information society. To meet this, the development of flexible electronic paper, which is also called e-paper, has been accelerated and has entered an initial stage of commercial development.

[0006]E-paper is much cheaper in production cost than the conventional flat panel display. Since e-paper does not use a backlight to illuminate its pixels, and does not need to be recharged constantly, it can have superior energy efficiency, while running at very low energy. Moreover, e-paper is very clear, has wider viewing angles, and is capable of holding text and images indefinitely without electricity.

[0007]Due to such advantages described above, e-paper may indeed have a variety of applications and have an enormous market potential. Applications may include e-books that have a paper-like surface and are capable of displaying digital versions of books, e-paper magazines with moving illustrations, self-updating newspapers, reusable paper displays for mobile phones, disposable TV screens and electronic wallpapers.

[0008]E-paper can be realized through several different methods, including an LCD, an organic EL, a reflective film display, electrophoresis, a twist ball, an electro-chromic method and a mechanically reflective display. In the twist ball and electrophoresis methods, display units are interposed between an upper board and a lower board. Here, uniform placement of the display units is an important factor in determining the quality of displayed images. Accordingly, a number of studies are underway to develop a technology for disposing the display units uniformly and easily.

SUMMARY

[0009]The present invention provides an electronic paper display device and a method of manufacturing the electronic paper display device that can adjust a distance between display units and the shape of the display units and arrange the display units on a plane without using a binder.

[0010]An aspect of the present invention provides a method of manufacturing an electronic paper display device. The method in accordance with an embodiment of the present invention includes forming a plurality of partition walls on a lower board, in which the partition walls partition the lower board into cells, disposing a display unit in the cell, and attaching an upper board on an upper part of the plurality of partition walls such that the display unit is covered.

[0011]The display unit can be a capsule including a positively-charged (+) particle and a negatively-charged (-) particle dispersed in a fluid. Here, the height of the partition walls can be smaller than the height of the capsule. Also, one of the (+) particle and (-) particle can be a black particle made from carbon black and the other of the (+) particle and (-) particle can be a white particle made from titanium oxide.

[0012]The display unit can be two or more kinds of capsules including a charged color particle dispersed in a fluid. The disposing of the display unit in the cell can be performed by closing a portion of the cell and opening another portion of the cell and then injecting the capsule into the opened cell. Also, the disposing of the display unit in the cell can be performed by placing a filter with a number of pores on the lower board and then injecting the capsule into the cell through the pores of the filter.

[0013]Moreover, the disposing of the display unit in the cell can be performed by opening a cell in which a capsule having a same color is to be disposed and closing another cell and then injecting one kind of capsules having a same color into the opened cell. Here, the cell, in which the one kind of capsules having the same color is injected, is closed, and a cell, in which another kind of capsules having a different color is to be disposed, is opened, and then another kind of capsules having a different color can be injected into the opened cell.

[0014]The display unit can be a rotating body having optical and electrical anisotropy.

[0015]The forming of the plurality of partition walls can include stacking a resin layer on the lower board, preparing a stamp having relievo and intaglio patterns formed therein, and pressing the stamp on the resin layer.

[0016]The height of a partition wall formed at an outermost end of the lower board can be greater than the height of an adjacent partition wall.

[0017]The partition walls can be made of a material selected from a group consisting of polycarbonates (PC), polyethylene terephthalate (PET), polyethersulfone (PES), polyimide, an epoxy system, a urethane system and a polyester system.

[0018]The disposing of the display unit can include piling a plurality of display units randomly on the lower board and vibrating the lower board.

[0019]The disposing of the display unit can include disposing a filter having pores on an upper portion of the lower board, in which the filter corresponds to the cell, and injecting a capsule into the cell through the filter.

[0020]The method can also include removing an overfilled display unit from the cell, performed between the disposing of the display unit and the attaching of the upper board.

[0021]The method can also include coating a resin on an upper portion of the display unit, performed between the disposing of the display unit and the attaching of the upper board.

[0022]Another aspect of the present invention provides an electronic paper display device. The electronic paper display device in accordance with an embodiment of the present invention include a lower board, in which one surface of the lower board has a plurality of partition walls and the partition walls partition the lower board into cells, a display unit, which is disposed in the cell, and an upper board, which is stacked on an upper portion of the plurality of partition walls so as to cover the display unit.

[0023]The height of a partition wall formed at an outermost end of the lower board can be greater than the height of an adjacent partition wall.

[0024]The display unit can be a capsule including a positively-charged (+) particle and a negatively-charged (-) particle dispersed in a fluid. Here, one of the (+) particle and (-) particle can be a black particle made from carbon black and the other of the (+) particle and (-) particle can be a white particle made from titanium oxide.

[0025]The display unit can be two or more kinds of capsules having a fluid, in which a charged color particle is dispersed. Here, the capsule can be three kinds of capsules representing red, green and blue, respectively, and the capsule can be two kinds of capsules representing complementary colors.

[0026]The capsule can include a black particle having different charged properties from the charged color particle, and can have a circular shape, an oval shape or a cylindrical shape.

[0027]The display unit can be a rotating body having optical and electrical anisotropy.

[0028]The partition walls can be made of a material selected from a group consisting of polycarbonates (PC), polyethylene terephthalate (PET), polyethersulfone (PES), polyimide, an epoxy system, a urethane system and a polyester system.

[0029]Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention

Read more: http://www.faqs.org/patents/app/20100033805#ixzz144oSJYMN