KR20120131728A - Electronic paper display device and manufacturing method thereof - Google Patents

Electronic paper display device and manufacturing method thereof Download PDF

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Publication number
KR20120131728A
KR20120131728A KR1020110050105A KR20110050105A KR20120131728A KR 20120131728 A KR20120131728 A KR 20120131728A KR 1020110050105 A KR1020110050105 A KR 1020110050105A KR 20110050105 A KR20110050105 A KR 20110050105A KR 20120131728 A KR20120131728 A KR 20120131728A
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KR
South Korea
Prior art keywords
display device
electronic paper
paper display
partition walls
horizontal
Prior art date
Application number
KR1020110050105A
Other languages
Korean (ko)
Inventor
곽정복
이상문
Original Assignee
삼성전기주식회사
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Priority to KR1020110050105A priority Critical patent/KR20120131728A/en
Publication of KR20120131728A publication Critical patent/KR20120131728A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • G02B26/026—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light based on the rotation of particles under the influence of an external field, e.g. gyricons, twisting ball displays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F2001/1678—Constructional details characterised by the composition or particle type
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
    • G09G3/3453—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on rotating particles or microelements

Abstract

The present invention relates to a partition structure including a lower electrode on a plate, a plurality of horizontal partition walls formed at regular intervals on the lower electrode, and a plurality of vertical partition walls formed at equal intervals on each of the horizontal partition walls, a twist ball injected into the partition structure, and a partition structure. A plurality of oils having different specific gravity in the partition structure into which twist balls are injected into the electronic paper display device including an upper electrode attached to the upper portion and a plurality of oils having different specific gravity filled between the upper electrode and the lower electrode. By alternately injecting a twisted ball with the same characteristics, various characters or images can be displayed.

Description

Electronic paper display device and manufacturing method thereof

The present invention relates to an electronic paper display device and a manufacturing method thereof, and more particularly, to an electronic paper display device and a method of manufacturing the same, which can display a character or an image by controlling the direction of a twist ball injected between upper and lower electrodes. It is about.

Recently, technology development of electronic paper display devices having the advantage of being able to bend flexibly with next generation display devices has been accelerated.

The electronic paper display device is not only flexible, but also has a low production cost compared to other display devices, and can be driven with less energy because it does not require backlight or continuous recharging.

In addition, since the electronic paper display device has a clear image quality, a wide viewing angle, and a memory function to prevent the displayed characters or images from disappearing even when the power supply is momentarily interrupted, the electronic paper display device can be folded including print media such as books, newspapers or magazines. It is expected to be widely used in a wide range of fields such as screens and electronic wallpaper.

On the other hand, the technical method to implement the electronic paper display device is largely a liquid crystal method, an organic EL method, a reflective film reflective display method, an electrophoretic method, a twist ball method, an electrochromic method, a mechanical reflective display method, etc. The development is divided into.

Among these, an electronic paper display device using a twist ball includes an elastomer matrix having a twist ball having an optical and electrical anisotropy interposed between two upper, lower electrodes, and upper and lower electrodes formed on upper and lower substrates. Include. A dielectric fluid is coated on the outer circumferential surface of the twist ball, and the twist ball may be made of transparent and opaque segments charged with different charges.

When a voltage is applied to the upper and lower electrodes, the electronic paper display device using the twist ball rotates so that each segment faces the electrode faces of opposite polarities in the dielectric solution according to the applied voltage direction. .

However, the conventional electronic paper display device using a twist ball requires a twist ball of various kinds (for example, four kinds) having different characteristics.

Accordingly, a method of easily implementing an electronic paper display device by rotating in various directions while using a twist ball having the same characteristic has been proposed.

The present invention provides an electronic paper display device capable of displaying various characters or images even when using twist balls having the same characteristics by alternately injecting a plurality of oils having different specific gravity into the partition structure into which the twist balls are injected. It is to provide a method of manufacturing the same.

To this end, an electronic paper display device according to an embodiment of the present invention includes a lower electrode on a plate; A partition structure including a plurality of horizontal partition walls formed at regular intervals on the lower electrode and a plurality of vertical partition walls formed at equal intervals on each of the horizontal partition walls; A twist ball injected into the partition structure; An upper electrode attached to an upper portion of the barrier rib structure; It includes a plurality of oils having different specific gravity that is filled between the upper electrode and the lower electrode.

Here, one side of the plurality of horizontal partition walls are closed by the plurality of vertical partition walls, and the other side is opened.

In addition, one side of the plurality of horizontal partition walls is opened by the plurality of vertical partition walls, the other side is closed.

In addition, one side of the plurality of horizontal barrier ribs is alternately closed by the plurality of vertical barrier ribs, and the other side thereof is alternately opened.

In addition, the plurality of horizontal partition walls are alternately opened on one side by the plurality of vertical partition walls, and the other side is alternately closed.

In addition, the plurality of oils are alternately filled between the upper electrode and the lower electrode.

In this case, the plurality of oils are injected through both side surfaces of the partition structure.

The twist balls are configured in plural, and the plurality of twist balls have the same characteristics.

The upper electrode is bonded to the lower electrode to seal the twist ball.

In addition, twist balls, which are divided into transparent or opaque segments, are injected into the barrier rib structure one by one through a squeeze method.

On the other hand, the manufacturing method of the electronic paper display device according to an embodiment of the present invention comprises the steps of applying a resin layer on the lower electrode on the plate; Forming a partition structure including a plurality of horizontal partition walls formed at regular intervals in the resin layer and a plurality of vertical partition walls formed at equal intervals in each of the horizontal partition walls; Injecting a twist ball into the partition structure; Attaching an upper electrode to an upper portion of the barrier rib structure; And filling a plurality of oils having different specific gravity between the upper electrode and the lower electrode.

In the forming of the partition structure, the plurality of horizontal partition walls are closed by one side by the plurality of vertical partition walls and the other side is opened.

In the forming of the barrier rib structure, one side of the plurality of horizontal barrier ribs is opened by the plurality of vertical barrier ribs, and the other side thereof is closed.

In addition, in the forming of the partition structure, the plurality of horizontal partition walls are alternately closed on one side by the plurality of vertical partition walls, and the other side is alternately opened.

In addition, in the forming of the partition structure, the plurality of horizontal partition walls are alternately opened on one side by the plurality of vertical partition walls, and the other side is alternately closed.

Here, the plurality of oils are alternately filled between the upper electrode and the lower electrode.

In addition, the twist ball is composed of a plurality, the plurality of twist balls have the same characteristics.

As described above, according to an electronic paper display device and a method of manufacturing the same according to an embodiment of the present invention, a twist ball having the same characteristics by alternately injecting a plurality of oils having different specific gravity into the partition structure into which the twist ball is injected Even if using a has the advantage that can display a variety of characters or images.

More specifically, the specific gravity of the oil by alternately injecting a plurality of oils having different specific gravity into the partition structure into which the twist ball is injected even without using various kinds of twist balls having different characteristics as in the prior art Accordingly, there is an advantage that can easily display a character or an image by rotating the twist ball in various directions.

1 is a cross-sectional view of an electronic paper display device according to a first embodiment of the present invention.
2 is a plan view of a partition structure according to a first embodiment of the present invention.
3 is a plan view of a partition structure according to a second embodiment of the present invention.
4 is a plan view of a partition structure according to a third embodiment of the present invention.
5 is a plan view of a partition structure according to a fourth embodiment of the present invention.
6 is a plan view of a partition structure according to a fifth embodiment of the present invention.
7 to 10 are cross-sectional views illustrating a manufacturing process of an electronic paper display device according to a first embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of an electronic paper display device according to a first embodiment of the present invention, and FIG. 2 is a plan view of a partition structure according to a first embodiment of the present invention.

1 and 2, the electronic paper display element includes a lower electrode 110, a partition structure 120, a twist ball 130, an upper electrode 140, and a plurality of oils 150a and 150b. It is configured by.

The lower electrode 110 may be formed of a conductive substrate such as copper (Cu) or gold (Au). In the case of the above-described configuration, the electronic paper display element may be supported and the electrode may be used.

The partition structure 120 has a plurality of horizontal partition walls 120a formed at regular intervals on the lower electrode 110, and a plurality of vertical partition walls 120b are formed at equal intervals on each of the plurality of horizontal partition walls 120a.

The barrier rib structure 120 may be formed by an imprint method using a stamp, and may be formed by various methods such as laser processing or photo etching method instead of the imprint method described above. have.

At this time, the barrier rib structure 120 is preferably formed to a height of approximately 50 to 110㎛, the inner width of the barrier rib structure 120 is formed to 50 to 100㎛, the width of the horizontal and vertical barrier ribs (120a, 120b) Silver is preferably formed to 5 to 30㎛.

In addition, a twist ball 130 divided into transparent or opaque segments 131 and 132 is injected into the horizontal bulkhead 120a and the vertical bulkhead 120b of the bulkhead structure 120 one by one through a squeeze method. It is composed.

The twist ball 130 is injected into the horizontal partition wall 120a and the vertical partition wall 120b of the partition wall structure 120, and rotates in various directions according to voltages applied to the upper and lower electrodes 140 and 110. Alternatively, the image may be displayed to the outside.

Here, the twist ball 130 is composed of a transparent segment 131 that reflects light and an opaque segment 132 that absorbs light, and the transparent segment 131 and the opaque segment 132 may be charged with different charges. Can be.

In addition, the twist ball 130 may use a ball rotatable by a magnetic field instead of using a ball rotatable by an electric field as described above, the twist ball 130 according to the amount or nature of the electric charge therein It can have different characteristics.

The upper electrode 140 is attached to the upper portion of the barrier rib structure 120, and more specifically, is bonded to the lower electrode 110 to seal the twist ball 130.

The upper electrode 140 is made of a transparent electrode (ITO), the external light is transmitted through the transparent upper electrode 140 through the transparent segment 131 or the opaque segment 132 of each twist ball 130 Allow it to be reflected or absorbed. In addition, a combination of light reflected or absorbed through the transparent segment 131 or the opaque segment 132 of each twist ball 130 may be displayed to the outside through the upper electrode 140.

In more detail, the positive electrode and the negative electrode are connected to the upper and lower electrodes 140 and 110, respectively, by the voltage applied to the upper and lower electrodes 140 and 110, respectively. The electric field is generated, and the twist ball 130 is rotated by the electric field generated between the upper and lower electrodes 140 and 110 to reflect light and absorb the light by the twist ball 130. Accordingly, the letter or the image may be displayed to the outside due to the combination of light reflection and light absorption.

Meanwhile, the twist ball 130 injected into the partition structure 120 between the upper and lower electrodes 140 and 110 is rotated through an electric field, and more specifically, the upper electrode 140 and the lower electrode 110. Rotation is made by itself through a plurality of oils (150a, 150b) filled between the).

Here, the plurality of oils (150a, 150b) is composed of a liquid material having a different viscosity or specific gravity, a liquid material capable of light conversion of the liquid and having a lubricating component (for example, Dow corning 10, Centistoke 200, vinyl ( Vinyl), nylon (Nylon), a group of liquid materials such as Accrylic) may be optionally used.

The plurality of oils 150a and 150b as described above may be injected through oil inlets formed on both side surfaces of the barrier rib structure 120, and mainly adopting a vacuum injection method in a vacuum chamber to form upper and lower parts. The electrode 140 may be filled between the 110 and 110 without generation of bubbles.

As shown in FIG. 1, in an embodiment of the present invention, two types of oils 150a and 150b will be described for convenience of description.

The two kinds of oils 150a and 150b as described above are alternately filled in the partition structure 120.

For example, the twist ball 130 is composed of first and second twist balls having a first characteristic, and third and fourth twist balls having a second characteristic, and two types of oils are first and second oils. In the case of 150a and 150b, the first oil 150a is filled in the partition structure 120 having the first twisted ball and the second oil (in the partition structure 120 having the second twisted ball). 150b) is filled, the first oil 150a is filled in the partition structure 120 with the third twist ball, and the second oil 150b is filled in the partition structure 120 with the fourth twist ball. do.

FIG. 2 is a plan view of the barrier rib structure shown in FIG. 1, and when the first to fourth horizontal barrier ribs are sequentially defined based on the horizontal barrier rib at the top of FIG. A plurality of first twist balls are injected one by one corresponding to the vertical partition walls formed at regular intervals, and a plurality of second twist balls are injected one by one corresponding to the vertical partition walls formed at regular intervals between the second and third horizontal partition walls. In addition, a plurality of third twist balls are injected one by one corresponding to the vertical partition walls formed at regular intervals between the third and fourth horizontal partition walls.

The first oil 150a is filled between the first and second horizontal partition walls, the second oil 150b is filled between the second and third horizontal partition walls, and the first oil is disposed between the third and fourth horizontal partition walls. 1 Oil 150a is filled. In this case, a separate blocking device may be provided to close one side of the first and second horizontal partition walls in order to fill oil between the first and second horizontal partition walls.

As described above, the characteristics of the twisted ball 130 having the same characteristics are injected into the partition structure 120, and two kinds of oils 150a and 150b of different types are alternately filled in the partition structure 120. Even if the same twist ball is used, the twist ball 130 may be controlled to rotate in various directions depending on the type of oil.

Accordingly, there is an advantage that can display a variety of characters or images.

As described above, the bulkhead structure having various structures will be described in detail in order to alternately fill two types of oil in the bulkhead structure.

3 is a plan view of a partition structure according to a second embodiment of the present invention. As shown in FIG. 3, one side of the plurality of horizontal partition walls 120a is closed by the plurality of vertical partition walls 120b, and the other side thereof is It is composed of an open structure.

Accordingly, two kinds of oils 150a and 150b are injected from the other side of the partition wall structure 120. More specifically, the first oil 150a is injected in the A and C directions, and the other kinds of second oils 150b are injected. ) May be injected in the B and D directions.

4 is a plan view of a partition wall structure according to a third embodiment of the present invention. Referring to FIG. 4, one side of the plurality of horizontal partition walls 120a is opened by the plurality of vertical partition walls 120b and the other side is closed. It is composed of a structure.

Accordingly, two kinds of oils 150a and 150b are injected from one side of the barrier rib structure 120. More specifically, the first oil 150a is injected in the A and C directions, and the other kinds of second oils 150b are injected. ) May be injected in the B and D directions.

5 is a plan view of a partition structure according to a fourth embodiment of the present invention. As shown in FIG. 5, one side of the plurality of horizontal partition walls 120a is alternately closed by a plurality of vertical partition walls 120b. It is composed of a structure in which the other side is open alternately.

Accordingly, two kinds of oils 150a and 150b are injected from both sides of the barrier rib structure 120, and more specifically, the first oil 150a is injected into the A and C directions of the other side of the barrier rib structure 120. Another kind of second oil 150b is injected in directions B and D which are one side of the barrier rib structure 120.

6 is a plan view of a partition structure according to a fifth embodiment of the present invention. Referring to FIG. 6, one side of the plurality of horizontal partitions 120a is alternately opened by the plurality of vertical partitions 120b, and the other side thereof is It consists of a structure that is closed alternately.

Accordingly, two kinds of oils 150a and 150b are injected from both sides of the barrier rib structure 120, and the first oil 150a is injected into the A and C directions of one side of the barrier rib structure 120. The second oil 150b is injected in directions B and D, which are other sides of the barrier rib structure 120.

Hereinafter, a manufacturing process of the electronic paper display device according to the first embodiment of the present invention will be described.

7 to 10 are cross-sectional views illustrating a manufacturing process of an electronic paper display device according to a first embodiment of the present invention.

As shown in FIG. 7, a resin layer is coated on the lower electrode 110 on the plate. Here, the resin layer may be composed of any one of the thermosetting resin or UV curable resin.

In addition, a partition wall structure 120 including a plurality of horizontal partition walls 120a and a plurality of vertical partition walls 120b formed at equal intervals in each of the horizontal partition walls 120a formed at regular intervals in the resin layer is formed. In this case, the barrier rib structure 120 may be formed through an imprint method using a stamp, and may be formed through various methods such as laser processing or photo etching method instead of the imprint method described above.

Next, as shown in FIG. 8, the twist ball 130 is injected into the partition structure 120. The twist ball 130 described above may be injected into the partition structure 120 through a squeeze method.

Referring to FIG. 9, the upper electrode 140 is attached to an upper portion of the barrier rib structure 120, and as shown in FIG. 10, a plurality of oils having different specific gravity between the upper electrode 140 and the lower electrode 110 ( 150a, 150b).

Here, the plurality of oils (150a, 150b) is composed of a liquid material having a different viscosity or specific gravity, a liquid material capable of light conversion of the liquid and having a lubricating component (for example, Dow corning 10, Centistoke 200, vinyl ( Vinyl), nylon (Nylon), a group of liquid materials such as Accrylic) may be optionally used.

The plurality of oils 150a and 150b as described above may be injected through oil inlets formed on both side surfaces of the barrier rib structure 120, and mainly adopting a vacuum injection method in a vacuum chamber to form upper and lower parts. The electrode 140 may be filled between the 110 and 110 without generation of bubbles.

As described above, the characteristics of the twisted ball 130 having the same characteristics are injected into the partition wall structure 120 and two kinds of oils 150a and 150b of different types are alternately filled in the partition wall structure 120. Even if the same twist ball is used, the rotation of the twist ball 130 may be controlled differently according to the type of oil.

Accordingly, there is an advantage that can display a variety of characters or images.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, Various changes and modifications will be possible.

110. Lower electrode 120. Bulkhead structure
120a. Transverse bulkhead 120b. Vertical bulkhead
130. Twist ball 140. Upper electrode
150a, 150b. oil

Claims (17)

A bottom electrode on the plate;
A partition structure including a plurality of horizontal partition walls formed at regular intervals on the lower electrode and a plurality of vertical partition walls formed at equal intervals on each of the horizontal partition walls;
A twist ball injected into the partition structure;
An upper electrode attached to an upper portion of the barrier rib structure;
Electronic paper display device comprising a plurality of oils having different specific gravity that is filled between the upper electrode and the lower electrode.
The method of claim 1,
The plurality of horizontal bulkheads,
An electronic paper display device in which one side is closed and the other side is opened by the plurality of vertical partitions.
The method of claim 1,
The plurality of horizontal bulkheads,
An electronic paper display device in which one side is opened and the other side is closed by the plurality of vertical partitions.
The method of claim 1,
The plurality of horizontal bulkheads,
An electronic paper display device in which one side is alternately closed and the other side is alternately opened by the plurality of vertical partitions.
The method of claim 1,
The plurality of horizontal bulkheads,
An electronic paper display device in which one side is alternately opened and the other side is alternately closed by the plurality of vertical partitions.
The method of claim 1,
The plurality of oils,
Electronic paper display device is alternately filled between the upper electrode and the lower electrode.
The method according to claim 4 or 5,
The plurality of oils,
Electronic paper display device is injected through both sides of the partition structure.
The method of claim 1,
The twist ball,
Consists of a plurality,
The plurality of twist balls,
Electronic paper display device having the same characteristics.
The method of claim 1,
The upper electrode,
And an electronic paper display device bonded to the lower electrode to seal the twist ball.
The method of claim 1,
Inside the partition structure,
An electronic paper display device in which twist balls divided into transparent or opaque segments are injected one by one through a squeeze method.
Applying a resin layer onto the lower electrode on the plate;
Forming a partition structure including a plurality of horizontal partition walls formed at regular intervals in the resin layer and a plurality of vertical partition walls formed at equal intervals in each of the horizontal partition walls;
Injecting a twist ball into the partition structure;
Attaching an upper electrode to an upper portion of the barrier rib structure;
A method of manufacturing an electronic paper display device comprising the step of filling a plurality of oils having different specific gravity between the upper electrode and the lower electrode.
The method of claim 11,
In the forming of the barrier rib structure, the plurality of horizontal partition walls are closed on one side by the plurality of vertical partition walls, the other side is a manufacturing method of the electronic paper display device.
The method of claim 11,
In the forming of the barrier rib structure, the plurality of horizontal barrier ribs have one side open by the plurality of vertical barrier ribs and the other side of the manufacturing method of the electronic paper display device.
The method of claim 11,
In the forming of the barrier rib structure, the plurality of horizontal barrier ribs are alternately closed on one side by the plurality of vertical barrier ribs, and the other side is alternately opened.
The method of claim 11,
In the forming of the barrier rib structure, the plurality of horizontal barrier ribs are alternately opened on one side and alternately closed on the other side by the plurality of vertical barrier ribs.
The method of claim 11,
The plurality of oils,
A method of manufacturing an electronic paper display device that is alternately filled between the upper electrode and the lower electrode.
The method of claim 11,
The twist ball,
Consists of a plurality,
The plurality of twist balls,
A method of manufacturing an electronic paper display device having the same characteristics.
KR1020110050105A 2011-05-26 2011-05-26 Electronic paper display device and manufacturing method thereof KR20120131728A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014174397A (en) * 2013-03-11 2014-09-22 Dainippon Printing Co Ltd Twist ball type electronic paper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014174397A (en) * 2013-03-11 2014-09-22 Dainippon Printing Co Ltd Twist ball type electronic paper

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