KR100925272B1 - Method and apparatus for injecting particles into electornic paper using laser - Google Patents

Abstract

PURPOSE: A method for injecting a minute particle of an electronic paper by using a laser and an apparatus thereof are provided to control the injection position and the injected amount precisely. CONSTITUTION: A method for injecting a minute particle of an electronic paper by using a laser comprises the following steps of: setting up the emission position and emission time of the laser beam according to the injection position and injected amount of minute particles(S31); moving the laser to the set emission position(S32); arranging the minute particles between the laser and an object to which the minute particles are injected(S33); and emitting the laser beam for the set emission time toward the set emission position(S34).

Description

Method and apparatus for fine particle injection of electronic paper using a laser {Method and apparatus for injecting particles into electornic paper using laser}

In the manufacture of an electronic paper, the present invention provides a method for inserting fine particles having a charge code of + or-and moving in accordance with the voltage code of an electrode in each pixel space to display the color level of each pixel in the pixel space between the electrodes. A fine particle injection method and apparatus for electronic paper.

With the recent development of display technology for displaying information, Cathode-Ray Tube (CRT), Electro-luminescent Display (ELD), Liquid Crystal Display (LCD), Organic Light Emitting Display (OLED), and Plasma Display (PDP) Various types of display devices such as a panel, a VFD (Vacuum Fluorescent Display), and an electronic paper have been proposed.

Among them, electronic paper has emerged as a new medium that can replace paper because of its high resolution, wide viewing angle, and bright white background like conventional paper and ink. In addition, the electronic paper can be implemented on any substrate, such as plastic, metal, paper, and the image is retained even after the power is cut off, and the battery life is long because no backlight is required as in the LCD, thereby reducing the cost and weight. It is possible to download, input, delete, and save data in a thin material such as paper, and to write and erase repeatedly, so that it can be used as an electronic newspaper, an electronic magazine, or an e-book that replaces existing newspapers, magazines, books, etc. In addition, it can be greatly utilized in various portable devices requiring a display such as a mobile phone, a PDA, a wrist watch, and the like.

As a technology related to such electronic paper, Gyricon's Gyricon display using twisted ball and E-ink's microcapsule display using microcapsules, Korea Electronics and Telecommunications Research Institute and Neolux's electrophoretic display have reached the commercialization stage. Kent's cholesterol liquid crystal display, Philips' electrowetting display, Iridigm's MEMS technology, electronic paper and Bridgestone, LG and Electronic Powder Research Institute's liquid powder display are under development.

Among the above technologies, Zyconon's technology is to apply a electric field to a small ball painted on one side black and white on the other side to rotate the screen in a desired direction. The image is displayed continuously even after the power is turned off.The electrophoretic technology applies the electric field to black and white particles to adjust the distribution of particles.The gray scale can be adjusted by adjusting the voltage. wide. In addition, E-Ink's technology is a microcapsule method that prevents particles from spreading by spreading black and white particles into small capsules, and Bridgestone's method in Japan is a solid particle, Using liquid powder that behaves like a liquid, it can greatly improve the slow response speed, which is a problem with other electronic papers.

1 is a block diagram illustrating an example of an electronic paper.

Referring to FIG. 1, the electronic paper forms upper and lower electrodes 13 and 14, which apply + or − electrodes to the upper and lower substrates 11 and 12 made of glass, respectively, and the upper and lower electrodes ( Lattice-shaped partition walls 15 are formed between the 13 and 14 to form a plurality of pixel cells, and white particles 16 and black particles 17 having opposite charge codes are injected into each cell. The white and black particles 16 and 17 injected into the cell are divided and moved to the upper and lower electrodes 13 and 14 according to the sign of the voltage applied to the upper and lower electrodes 13 and 14. White or black is displayed.

In the above, the particles (13, 14) are fine particles of the dust level, it may be implemented in a variety of materials, such as liquid, plastic, metal.

In order to manufacture such an electronic paper, a process of injecting fine particles into a plurality of pixel spaces divided by the partition walls 15 is required. In this case, in order to accurately inject a predetermined amount of fine particles into each of the fine pixel spaces. There is a need for fine particle injection techniques capable of precise position control and injection rate control.

Accordingly, the present invention provides a method and apparatus for fine particle injection of electronic paper using a laser capable of uniformly injecting fine particles into each pixel space of the electronic paper through precise position control and injection amount control in manufacturing the electronic paper. I would like to.

As a means for solving the above problems, the present invention comprises the steps of setting the emission position and the emission time of the laser beam in accordance with the injection position and the injection amount of the fine particles; Moving a laser that emits the laser beam to a predetermined emission position; Disposing fine particles between the laser and the fine particle injection object; Emitting a laser beam for the set emission time toward the set emission position; And by the emitted laser beam, the fine particles present in the path of the laser beam is moved and injected into the fine particle injection object provides a method for fine particle injection of electronic paper using a laser.

The fine particles are characterized by having a charge code of + or-.

In addition, the method of injecting fine particles into the electronic paper using the laser may further include setting the intensity of the laser beam according to the type of the fine particles before emitting the laser beam.

In addition, the present invention is another means for solving the above problems, the laser is installed on the top of the fine particle injection target, and emits a laser beam in the lower direction; And a particle container installed to be positioned on the laser beam emission path between the laser and the fine particle injection object, the particle container storing fine particles, wherein the particle is present on the path of the laser beam emitted from the laser. The present invention provides an apparatus for injecting microparticles of electronic paper using a laser which is moved by an intensity difference and injected into the microparticle injection object.

In addition, the apparatus for injecting fine particles of electronic paper using the laser includes: a laser driver for controlling the emission time of the laser beam to drive the laser; A laser moving unit which moves the laser to adjust the emission position of the laser beam; And a controller configured to control the laser driver and the laser moving unit by setting the emission time and the emission position of the laser beam according to the injection position and injection amount of the fine particles.

The controller may further perform a function of setting the intensity of the laser beam according to the type of the fine particles.

The present invention is to inject the microparticles into each pixel space through the phenomenon that the microparticles are moved by the intensity gradient of the front and rear of the microparticles when the microparticles are present on the laser path. Compared to the laser printing method or the corona electrostatic coating method, the injection position and the injection amount can be precisely controlled, and there is an excellent effect that the simple structure can be implemented.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing in detail the operating principle of the preferred embodiment of the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In addition, the same reference numerals are used for parts having similar functions and functions throughout the drawings.

In addition, throughout the specification, when a part is 'connected' to another part, it is not only 'directly connected' but also 'indirectly connected' with another element in between. Include. In addition, the term 'comprising' a certain component means that the component may be further included, without excluding the other component unless specifically stated otherwise.

Figure 2 is a schematic diagram for explaining the principle of fine particle injection of electronic paper using a laser according to the present invention.

In FIG. 2, reference numeral 24 denotes a fine particle injection target to be injected with fine particles, a substrate 21 made of a transparent material, an electrode 22 formed on one surface of the substrate 21, and made of a transparent material. An electronic paper in a state of being assembled to a partition 23 formed in a lattice form on the electrode 22 to divide a plurality of pixel spaces is shown. In this case, the structure of the electronic paper in FIG. 2 is just an example, and the structure may vary depending on the implementation manner.

Next, reference numeral 25 denotes a particle container containing fine particles injected into the fine particle injection target 24. The fine particles are particles having a positive or negative charge code injected into each pixel space in an electronic paper, and are dispersed in the particle container 25 to be contained in a floating form such as dust or smoke.

Reference numeral 26 denotes a laser that emits a laser beam of the same wavelength, phase, and traveling direction. Since the laser beam is made of light having a constant wavelength and a uniform texture, the laser beam is strong in intensity, has one color, and is transmitted far with little change in diameter.

In this case, the laser 26 is installed on the fine particle injection object 24 so as to emit a laser beam toward the lower direction, and on the laser beam path between the laser 26 and the fine particle injection object 24 A particle container 25 containing the fine particles is disposed.

In the arrangement as described above, when the laser 26 emits a laser beam in a downward direction, if fine particles exist in the path of the emitted laser beam, an intensity gradient in front of and behind the fine particles (intentsity gradient) ), Whereby the fine particles are pushed in the direction where the strength is weak, that is, the downward direction, and injected into the fine particle injection target 24.

As described above, the present invention injects the fine particles into the pixel space of the fine particle injection target 24 by using the movement of the fine particles due to the difference in the intensity of the fine particles existing on the path of the laser beam.

At this time, the condition of the laser beam such as the wavelength, intensity, etc., varies depending on the type of the fine particles. That is, since the fine particles may be made of various materials such as metal and plastic, the conditions of the laser beam for displaying the shift phenomenon due to the difference in intensity vary according to the characteristics of the material of the fine particles.

When fine particles are injected using a laser as in the present invention, the fine particle injection position and the fine particle injection amount can be precisely controlled by adjusting the emission position of the laser beam and the emission time of the laser beam.

3 is a flowchart illustrating an embodiment of a method for injecting fine particles into an electronic paper using a laser according to the present invention.

Referring to Figure 3, the fine particle injection process of the electronic paper using a laser as follows.

In order to inject the fine particles, the present invention first sets the emission position and the emission time of the laser beam according to the injection position and injection amount of the fine particles (S31). That is, the target position at which the laser beam is emitted becomes a fine particle injection position. And the emission time of the laser beam varies in proportion to the fine particle injection amount, by measuring the fine particle injection amount per unit time, the emission time of the laser beam can be easily calculated.

Then, the laser 26 is moved so that the laser beam can be emitted to the position set above (S32).

Then, the fine particles are disposed between the laser 26 and the fine particle injection target 24 (S33). In this case, the fine particles are dispersed in the particle container 25 located between the laser 26 and the fine particle injection target 24 to be disposed in a floating form like dust or smoke.

Then, the laser 26 is driven to emit a laser beam for the set emission time toward the set emission position (S34).

Then, by the emitted laser beam, the fine particles existing on the path of the laser beam is moved downward and injected into the target injection position of the fine particle injection target 24 (S35).

As described above, when the fine particles are injected into the fine particle injection target 24 using a laser, the shape of the partition wall and the structure of the electronic paper are not affected at all, and thus, the electronic paper having various structures without changing the process or changing the device is used. It can be applied to simply inject the fine particles.

In addition, although not shown in Figure 3, the fine particle injection method of the electronic paper using the laser according to the present invention, before the step of emitting the laser beam (S34), the intensity of the laser beam according to the type of the fine particles It may further comprise the step of setting. According to the present invention, the laser beam is adjusted so that the movement phenomenon due to the intensity is displayed according to the kind of the fine particles, so that the fine particles can be injected to various types of electronic paper.

Next, FIG. 4 is a block diagram showing an example of an apparatus for injecting fine particles of electronic paper using a laser according to the present invention.

Referring to FIG. 4, the apparatus for fine particle injection of electronic paper using the laser according to the present invention includes a laser 41 disposed above the fine particle injection target 40 and emitting a laser beam in a downward direction. It is provided so as to be located on the laser beam emission path between the laser and the fine particle injection object, and comprises a particle container 42 for storing the fine particles.

In addition, the fine particle injection apparatus of the electronic paper using the laser which concerns on this invention controls the emission time of the said laser beam, and moves the laser drive part 43 which drives the said laser 41, and the said laser 44. The laser moving part 44 for adjusting the emission position of the laser beam, and the emission time and the emission position of the laser beam according to the injection position and the injection amount of the fine particles, thereby setting the laser driver 43 and the laser. A control unit 45 for controlling the moving unit 44 may be further included.

In the fine particle injection apparatus configured as described above, as described above, the fine particles existing on the path of the laser beam emitted from the laser 41 are moved by the difference in intensity and injected into the fine particle injection target.

Here, the laser 41, the particle container 42 and the fine particle injection object 40 can be easily understood by referring to the description with reference to FIG. That is, the wavelength or intensity of the laser beam emitted from the laser 41 is set according to the characteristics of the fine particles, and the emission time and the emission position of the laser beam are set according to the injection amount and the injection position of the fine particles. The fine particles are disposed in the particle container 42 in a floating form such as dust or smoke.

In this case, the present invention further includes the laser driver 43, the laser moving unit 44, and the controller 45, whereby the laser beam emission position and the emission time of the laser 41 are injected positions and injection amounts of the fine particles. The automatic control in real time according to the, it is possible to implement the automation of the injection process.

In addition, the control unit 45 further performs a function of setting and controlling the intensity of the laser beam according to the type of the fine particles, thereby enabling proper fine particle injection in accordance with various types of electronic paper, Enable automation

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those skilled in the art.

The present invention is to inject the microparticles into each pixel space through the phenomenon that the microparticles are moved by the intensity gradient of the front and rear of the microparticles when the microparticles are present on the laser path, It is applied to the fine particle injection process of the manufacturing process, and it is possible to control the injection position and injection amount more precisely than the conventional laser printing method or corona electrostatic coating method, while implementing a simple structure to simplify the electronic paper manufacturing process Can be.

1 is a schematic diagram showing the structure of an electronic paper.

2 is a view for explaining the principle of fine particle injection using a laser according to the present invention.

3 is a flowchart illustrating a method of injecting fine particles into an electronic paper using a laser according to the present invention.

4 is a block diagram of an apparatus for injecting fine particles of electronic paper using a laser according to the present invention.

Claims (7)

Setting an emission position and an emission time of the laser beam according to the injection position and injection amount of the fine particles; Moving a laser that emits the laser beam to a predetermined emission position; Disposing fine particles between the laser and the fine particle injection object; Emitting a laser beam for the set emission time toward the set emission position; And The fine particle injection method of the electronic paper using a laser comprising the step of injecting the fine particles present on the path of the laser beam by the emitted laser beam to the fine particle injection target. The method of claim 1, wherein the fine particles A fine particle injection method for an electronic paper using a laser, characterized by having a charge code of + or-. The method of claim 1, Before the laser beam is emitted, setting the intensity of the laser beam according to the type of the fine particles. A laser installed above the fine particle injection target and emitting a laser beam in a downward direction; And A particle container installed to be positioned on the laser beam emission path between the laser and the fine particle injection object, and storing fine particles, An apparatus for injecting fine particles of an electronic paper using a laser in which fine particles existing on a path of a laser beam emitted from the laser are moved by an intensity difference and injected into the fine particle injection target. The method of claim 4, wherein the fine particles Apparatus for fine particle injection of electronic paper using a laser, characterized by having a charge code of + or-. The method of claim 4, wherein A laser bulb driving the laser beam by controlling the emission time of the laser beam; A laser moving unit which moves the laser to adjust the emission position of the laser beam; And According to the injection position and the injection amount of the fine particles, setting the emission time and the emission position of the laser beam, and further comprising a control unit for controlling the laser drive unit and the laser moving unit fine particle injection of the electronic paper using a laser Device. The method of claim 6, And the control unit further performs a function of setting the intensity of the laser beam according to the type of the fine particles.

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