KR101889335B1 - Flexible transparent display and method of fabricating the same - Google Patents

Abstract

The transparent transparent display and the method of manufacturing the same according to the present invention can be applied to a transparent display in which information is selectively displayed on all or a part of a region in a state in which light can be transmitted through the entire screen, A light shielding plate having high transmittance characteristics and light shielding characteristics is fabricated and a protective layer is formed on the back surface of the shading plate to minimize the influence of moisture and oxygen penetrated from the outside, - preparing a shell nanoparticle dispersion; Preparing a transparent polymer electrolyte solution; Forming a transparent electrode on one surface of the first and second flexible substrates; Forming a protective layer on the other surface of the first and second flexible substrates; Coating the dispersion of the electrochromic core-shell nanoparticles on the transparent electrode of the first flexible substrate to form an electrochromic layer; Coating the polymer electrolyte solution on the transparent electrode of the second flexible substrate to form a polymer electrolyte layer; Forming a light shielding plate by attaching a first flexible substrate on which the electrochromic layer is formed and a second flexible substrate on which the polymer electrolyte layer is formed; And attaching the shading plate to a back surface of a predetermined transparent panel.

Description

TECHNICAL FIELD [0001] The present invention relates to a flexible transparent display and a method of manufacturing the same. [0002] FLEXIBLE TRANSPARENT DISPLAY AND METHOD OF FABRICATING THE SAME [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display, and more particularly, to a flexible transparent display in which information is selectively displayed on all or a part of a screen in a state in which light can be transmitted through the entire screen, and a method of manufacturing the same.

In recent information society, display has become more important as a visual information delivery medium, and it is necessary to meet requirements such as low power consumption, thinning, light weight, and high image quality in order to take a major position in the future.

The display may include a cathode ray tube (CRT), an electroluminescence (EL), an organic light emitting diode (OLED), a vacuum fluorescent display (VFD) ), A non-light emitting type such as a liquid crystal display (LCD), such as a field emission display (FED), a plasma display panel (PDP) Can be divided.

The liquid crystal display device is an apparatus which expresses an image using the optical anisotropy of liquid crystal, and is superior in visibility compared to the conventional cathode-ray tubes and has a smaller average power consumption than a cathode-ray tube of the same size, .

Hereinafter, a general liquid crystal display device will be described.

In general, a liquid crystal display device is a display device that supplies a data signal according to image information to pixels arranged in a matrix form, and controls a light transmittance of the pixels to display a desired image.

Accordingly, a liquid crystal display device includes a liquid crystal panel in which pixels are arranged in a matrix form, and a driver for driving the pixels.

The liquid crystal panel includes a thin film transistor array substrate and a color filter substrate bonded to each other so as to maintain a uniform cell gap, and a liquid crystal layer formed in a cell gap between the array substrate and the color filter substrate. And a liquid crystal layer.

At this time, a common electrode and a pixel electrode are formed on the liquid crystal panel in which the array substrate and the color filter substrate are bonded together to apply an electric field to the liquid crystal layer.

Therefore, when the voltage of the data signal applied to the pixel electrode is controlled while the voltage is applied to the common electrode, the liquid crystal of the liquid crystal layer is rotated by dielectric anisotropy according to the electric field between the common electrode and the pixel electrode And a character or an image is displayed by transmitting or blocking light for each pixel.

In recent years, a transparent display capable of displaying an object at the rear and being able to display is being actively studied, and the possibility of application of the transparent display is expected to increase explosively. That is, the transparent display is a device that transmits desired information by displaying information to be displayed in all or a part of a region in a state in which light can be transmitted through the entire screen.

However, the above-described liquid crystal display device has been developed only as an independent display device itself, and can not be used for various purposes such as a transparent display.

Further, there is a disadvantage that visibility is deteriorated due to light interference between light transmitted through the entire screen and an area representing information to be displayed. In order to improve this, a light shielding plate capable of varying the transmission or blocking of light is required.

In the case of using Polymer-Dispersed Liquid Crystals (PDLC) as the shading plate, a transparent state can be displayed only by applying an electric field. The voltage for maintaining such a transparent state is very high, and the light- It does not significantly improve the visibility of the transparent display.

Next, an electro-phoretic display (EPD) can achieve the same purpose by using black electrophoretic particles, but it is necessary to apply a constant electric field to maintain permeation or shielding state, and electrophoretic particles A fluid is required for maintaining and driving the dispersion state, there is a possibility that the leakage of the fluid may occur, which is disadvantageous for long-term driving.

Electro-Wetting Display (EWD) is not suitable for the device implementation for the shading plate due to possibility of deposition of dye or pigment in black oil and possibility of leakage of fluid like electrophoretic display.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a flexible transparent display employing a light shielding plate having a high transmissivity and a light shielding property and capable of driving for a long time.

Other objects and features of the present invention will be described in the following description of the invention and the claims.

According to an aspect of the present invention, there is provided a flexible transparent display comprising: a transparent panel that displays information to be displayed in all or a part of a region in a state where light can be transmitted through the entire screen; And a light shielding plate disposed on a rear surface of the transparent panel, wherein the light shielding plate comprises first and second flexible substrates; A transparent electrode formed on inner surfaces of the first and second flexible substrates; An electrochromic core-shell nanoparticle formed on the transparent electrode of the first flexible substrate and variably controlling transmission or blocking of light to the transparent panel; An electrolyte formed on the transparent electrode of the second flexible substrate; And a protective layer formed on an outer surface of the first and second flexible substrates.

At this time, the transparent panel may be divided into a display part for displaying information and a transparent part capable of always transmitting light regardless of the display of information.

The transparent panel includes a light source for generating light; A first polarizer for polarizing light emitted from the light source; A light guide plate for emitting polarized light incident through the first polarizer to the front; And a liquid crystal panel for displaying an image by light emitted through the light guide plate and a second polarizer.

The transparent electrode may be formed only on the inner surfaces of the first and second flexible substrates at positions facing the display portion of the transparent panel.

The core of the electrochromic core-shell nanoparticle may have a size of 10 nm to 200 nm on a primary particle basis and a shell of 0.1 nm to 20 nm in a range that does not impair the transmittance to light.

The electrolyte may be composed of a cured polymer electrolyte.

The protective layer may be formed of SiNx, TiN, TaN, WN, TiSiN, TaSiN, TiO 5, Al 2 O 3, HFO 2 or In ₂ O _3.

The first and second flexible substrates may be bonded to each other so as to be opposite to each other, and the ends may be bonded using an epoxy resin.

A method of fabricating a flexible transparent display according to an embodiment of the present invention includes the steps of: preparing an electrochromic core-shell nanoparticle dispersion; Preparing a transparent polymer electrolyte solution; Forming a transparent electrode on one surface of the first and second flexible substrates; Forming a protective layer on the other surface of the first and second flexible substrates; Coating the dispersion of the electrochromic core-shell nanoparticles on the transparent electrode of the first flexible substrate to form an electrochromic layer; Coating the polymer electrolyte solution on the transparent electrode of the second flexible substrate to form a polymer electrolyte layer; Forming a light shielding plate by attaching a first flexible substrate on which the electrochromic layer is formed and a second flexible substrate on which the polymer electrolyte layer is formed; And attaching the shading plate to a back surface of a predetermined transparent panel.

At this time, after the transparent electrodes are formed on one surface of the first and second flexible substrates, the first and second flexible substrates, on which the transparent electrodes are formed, may be put into the plasma reaction furnace to expose another surface for forming the protective layer .

At this time, the protective layer having a thickness of 200 nm can be formed on the other surface of the first and second flexible substrates by performing NH ₃ gas at 500 sccm, SiH ₄ gas at 70 sccm, heating temperature at 80 ° C. and RF power at 80 W for 90 seconds have.

The protective layer can be formed with SiNx, TiN, TaN, WN, TiSiN, TaSiN, TiO 5, Al 2 O 3, HFO 2 or In ₂ O _3.

The electrochromic layer may be formed by spin-coating the electrochromic core-shell nanoparticle dispersion on the transparent electrode of the first flexible substrate at 500 rpm for 15 seconds and then drying at 90 ° C for 30 minutes.

The polymer electrolyte layer can be formed by spin coating the polymer electrolyte solution on the transparent electrode of the second flexible substrate at 500 rpm for 15 seconds and then drying at 110 캜 for 10 minutes.

After the first flexible substrate and the second flexible substrate are bonded together, UV light of 1 J / cm ² is irradiated to cure the polymer electrolyte layer, and the ends can be bonded using an epoxy bond.

As described above, the flexible transparent display and the method of manufacturing the same according to an embodiment of the present invention are transparent displays in which information is selectively displayed on all or a part of a region in which light can be transmitted through the entire screen, - By using shell nanoparticles and a solid electrolyte, it becomes possible to provide a shading plate having high transmission characteristics and light shielding characteristics.

Further, by forming a protective layer on the back surface of the shading plate, the influence of moisture and oxygen penetrated from the outside can be minimized to enable driving for a long time. By applying a shading plate having a flexible characteristic to a transparent display, .

1 is a perspective view exemplarily showing a structure of a flexible transparent display according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A 'of a flexible transparent display according to an embodiment of the present invention shown in FIG. 1; FIG.
FIGS. 3A and 3B are diagrams showing the characteristics of electrochromic core-shell nanoparticles in the flexible transparent display according to the embodiment of the present invention shown in FIG.
4 is a flowchart sequentially illustrating a method of manufacturing a flexible transparent display according to an embodiment of the present invention.
FIG. 5 is a flowchart specifically illustrating a method of manufacturing a shading plate in the method of manufacturing a flexible transparent display according to the embodiment of the present invention shown in FIG.
6 is a table showing the moisture transmittance and the light transmittance of the shading plate according to whether a protective layer is formed or not.
7 is a table showing the light transmittance of the shading plate according to the number of driving times.
8A and 8B are graphs showing the light transmittance of the shading plate when driven 1000 times.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a preferred embodiment of a flexible transparent display and a method of manufacturing the same according to the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification. The dimensions and relative sizes of the layers and regions in the figures may be exaggerated for clarity of illustration.

It will be understood that when an element or layer is referred to as being another element or " on " or " on ", it includes both intervening layers or other elements in the middle, do. On the other hand, when a device is referred to as " directly on " or " directly above ", it does not intervene another device or layer in the middle.

The terms spatially relative, "below," "lower," "above," "upper," and the like, And may be used to easily describe the correlation with other elements or components. Spatially relative terms should be understood to include, in addition to the orientation shown in the drawings, terms that include different orientations of the device during use or operation. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element. Thus, the exemplary term " below " can include both downward and upward directions.

The terminology used herein is for the purpose of describing embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprise " and / or " comprising ", as used in the specification, means that the presence of stated elements, Or additions.

1 is a perspective view illustrating a structure of a flexible transparent display according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view taken along the line A-A 'of the flexible transparent display according to the embodiment of the present invention shown in FIG.

Referring to the drawings, a flexible transparent display according to an embodiment of the present invention includes a transparent panel 101 for displaying information to be displayed in all or a part of a region in a state where light can be transmitted through the entire screen, And a light shielding plate 100 which is capable of varying the transmission and blocking of light to the transparent panel 101. [

The transparent panel 101 may be divided into a display portion D for displaying information and a transmissive portion T which can always transmit light regardless of display of information. D).

In this case, for example, the transparent panel 101 may include a light source for generating light, a first polarizer for polarizing light generated from the light source, and a second polarizer for outputting the polarized light incident through the first polarizer, A light guide plate, a liquid crystal panel for displaying an image by light emitted through the light guide plate, and a second polarizer.

The second polarizing plate may further include a touch panel for a touch function. In this case, if pen writing is performed on the image displayed on the transparent panel 101, .

The touch panel is used in a computer aided design (CAD), a production system, a game machine, a kiosk, a point-of-sale (POS) Which is mounted on a display surface which is an output device and is capable of performing various input operations by directly touching a predetermined position while viewing the display surface of a user by eyes.

The liquid crystal panel includes an upper substrate, a lower substrate, and a liquid crystal layer interposed therebetween.

The upper substrate and the lower substrate may include a common electrode and a pixel electrode for driving the liquid crystal layer. The common electrode and the black matrix may be arranged in a matrix manner to define a pixel region. In addition, it may include a color filter for implementing color.

The light source is arranged to face the light incidence surface located on one side of the light guide plate. The light source may be a lamp such as a cold cathode fluorescent lamp (CCFL) or an external electrode fluorescent lamp (EEFL) or a light emitting diode (LED) array. In this case, the light emitting diode array may be a red light emitting diode, a green light emitting diode, a blue light emitting diode, or a plurality of white light emitting diodes.

At this time, natural light incident from one side of the light guide plate may be used as the light source of the present invention, or polarized light emitted by the interior lamp may be used.

In addition, since the natural light incident in the lower direction of the light guide plate is transmitted through the second polarizer regardless of the driving of the liquid crystal panel, the user can see the object under the light guide plate regardless of the display. That is, by polarizing the light before entering the light guide plate, the display can be realized by the polarized light, while the transparent state can be maintained by using the natural light incident from the lower direction of the light guide plate.

The light shielding plate 100 according to the embodiment of the present invention is capable of varying the transmission or blocking of light to the transparent panel 101 Thereby improving visibility due to light interference of light transmitted through the entire screen of the transparent panel 101 and an area representing information to be displayed.

The light shielding plate 100 needs a high transmittance characteristic in order to prevent a decrease in the transmittance of the transparent display and a high light shielding property in order to improve the visibility.

The shading plate 100 is an additional device for improving the cognitive performance of the transparent display, so that the inherent characteristics of the transparent display should not be impaired. The light blocking plate 100 should be driven when an electric field is applied to display information on a transparent display to shut off the light, and the light blocking plate 100 must maintain a transparent state in a state where information is not displayed because no electric field is applied.

Also, the shielding plate 100 is advantageous in terms of power consumption as the driving voltage is lower, and the plastic substrate 105 and 110 can be used, so that the shielding plate 100 can be applied to a flexible device.

Therefore, in the embodiment of the present invention, the electrochromic core-shell nanoparticles 120 are used as the light shielding plate 100, while the solid electrolyte 125 and the transparent plastic substrates 105 and 110 are used, (Not more than 5V) while maintaining a light-shielding state when an electric field is applied. Further, there is no fear of leakage due to no fluid, and flexible display of a transparent display is possible by using flexible substrates 105 and 110 such as plastic.

However, unlike the glass substrate, the plastic substrates 105 and 110 are difficult to prevent from various gases such as moisture and oxygen that can permeate from the outside. Therefore, in the embodiment of the present invention, And a predetermined protective layer (109, 119) is formed on the outer surface.

As described above, the present invention provides a shielding plate 100 of a flexible transparent display which is excellent in transparency and shielding degree and which is advantageous for long-time driving, and the shielding plate 100 is made of a core having an electrochromic characteristic capable of variably controlling light transmission or shielding A plastic substrate 105, 110 on which nanoparticles 120 having a shell structure, a solid electrolyte 125, and protective layers 109, 119 are formed.

The shield plate 100 according to an embodiment of the present invention includes predetermined transparent electrodes 108 and 108 on the inner surfaces of the plastic substrates 105 and 110 to apply an electric field to the electrochromic core- 118).

The transparent electrodes 108 and 118 may be formed only on the inner surfaces of the plastic substrates 105 and 110 facing the display unit D of the transparent panel 101. However, the present invention is not limited thereto.

FIGS. 3A and 3B are graphs showing the characteristics of the electrochromic core-shell nanoparticles in the flexible transparent display according to the embodiment of the present invention shown in FIG.

FIG. 3A shows electrochemical conversion of core-shell nanoparticles in a light transmission state, and FIG. 3B shows electrochromic core-shell nanoparticles in a light shield state by applying an electric field.

Referring to the drawings, the electrochromic core-shell nanoparticles 120 have a wide coupling region capable of supporting or adsorbing a material having a high transmittance to visible light and an easy flow of electrons and a large specific surface area. And the shell 120a may be made of a material that can change from transparent to shade or from shade to transparent while being oxidized or reduced by electrons.

The size of the core 120b may range from 10 nm to 200 nm on the basis of the primary particle within a range that does not impair the transmittance to light, and the shell 120a may have a size ranging from 0.1 nm to 20 nm.

Hereinafter, a manufacturing method of a flexible transparent display according to an embodiment of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the method of manufacturing the flexible transparent display according to the embodiment of the present invention described later, and the manufacturing method described below is only one example.

4 is a flowchart sequentially illustrating a method of manufacturing a flexible transparent display according to an embodiment of the present invention.

5 is a flowchart illustrating a method of manufacturing a flexible transparent display according to an exemplary embodiment of the present invention. Referring to FIG.

Electrochromic core-shell nanoparticle dispersion manufacturing

For example, in a 50 ml wide-mouth (ed) bottle, 20 grams of titanium oxide having a diameter of 10 nm to 20 nm, 30 grams of ethanol and 2- (2- (2-methoxy) ethoxy) 0.5 g of Tic Acid, and 100 g of zirconia beads of 0.5 mm in size, and dispersed for 5 hours using a paint shaker.

Thereafter, zirconia beads are removed to prepare a titanium oxide nanodispersion.

Further, 15.6 grams (100 millimoles) of 4,4-biprydine, 21.9 grams (100 millimoles) of bromoethylphosphonate and 100 grams of acetonitrile were added to a three-necked flask in a nitrogen atmosphere and 48 After refluxing for a period of time, 4.1 grams (30 millimoles) of bromobenzene, 4-chlorobenzonitrile, 3.4 grams (20 millimoles) of chlorosalicylic acid and 100 grams of acetonitrile were added 85 C < / RTI > for 24 hours. Thereafter, it is washed with diethyl ether, and recrystallized in a solution in which 2/1 isopropyl alcohol / ethyl ether is mixed to obtain a white substance.

2.0 grams of the above white substance was dissolved in 50 grams of methanol and dissolved using high temperature and ultrasonic waves. Then, 50 grams of a titanium oxide nanodispersion having a solid content of 40% by weight prepared above was mixed and stirred. Lt; RTI ID = 0.0 > C, < / RTI >

Thereafter, the unreacted material is purified to prepare an electrochromic core-shell nanoparticle dispersion (S110).

Preparation of Polymer Electrolyte Solution

To the flask equipped with an agitator was added 300 grams of acetonitrile, 10.0 grams of polyethylene oxide (molecular weight 600K) and 10.0 grams of urethane acrylate having 0.8 mole of ethylene oxide added thereto, and the mixture was stirred for 30 minutes. Then, 1.77 grams of LiTFSi and 1.77 grams of additive 0.5 g of S104 (Air product) was added thereto, and the mixture was stirred at a temperature of 50 DEG C for 6 hours to prepare a transparent polymer electrolyte solution (S120).

In the present invention, a solid electrolyte is used to facilitate device structure stability and electron transfer to electrochromic core-shell nanoparticles. The electrolyte should have good ionic conductivity, high transparency, and low haze.

Formation of protective layer on flexible substrate

A transparent electrode made of indium-tin oxide having a sheet resistance of 40? / Sq is formed on one surface of a pair of flexible substrates, for example, first and second flexible substrates for optical use (S130-1).

Next, the first and second flexible substrates on which the transparent electrodes are formed are put into a plasma reaction furnace to expose another surface for forming a protective layer. Then, in order to form the SiNx film, NH ₃ gas, SiH ₄ gas, 70 sccm, heating temperature of 80 ° C. and RF power of 80 W were applied for 90 seconds to form a protective layer having a thickness of 200 nm to form first and second flexible substrates (S130-2, S130).

First and second flexible substrate is surely to be protected with a protective layer, the protective addition to the above-mentioned SiNx as TiN, TaN, WN, TiSiN, TaSiN, TiO _5, Al ₂ O _3, HFO ₂ or In ₂ O ₃ of the present invention Layer can be formed. However, the present invention is not limited thereto, and any material capable of minimizing the amount of moisture and oxygen permeable from the outside may be used.

As described above, the first and second flexible substrates minimize the moisture and oxygen penetrated from the outside to suppress unnecessary reaction with the electrochromic core-shell nanoparticles located in the first and second flexible substrates and the solid electrolyte Thereby making it possible to improve the long time driving characteristics of the shading plate.

Shade plate manufacturing

The electrochromic core-shell nanoparticle dispersion prepared above is spin-coated on the transparent electrode of the first flexible substrate at 500 rpm for 15 seconds and then dried at 90 ° C for 30 minutes to form an electrochromic layer (S140- One).

The polymer electrolyte solution prepared above is spin-coated on the transparent electrode of the second flexible substrate at 500 rpm for 15 seconds and then dried at 110 ° C for 10 minutes to form a polymer electrolyte layer (S140-2).

Thereafter, the first flexible substrate and the second flexible substrate are bonded together through a lamination process (S140-3).

Thereafter, UV light of 1 J / cm ² is irradiated to cure the polymer electrolyte layer, and then the ends are bonded using an epoxy bond (S140-4). Through the above process, a light shielding plate for a flexible transparent display is manufactured (S140).

Shield plate attached to transparent panel

The shading plate manufactured above is attached to the back surface of a predetermined transparent panel to complete the manufacture of the flexible transparent display of the present invention (S150).

Hereinafter, the moisture transmittance and light transmittance of the light shielding plate manufactured as described above will be described in comparison with the light shielding plate of the comparative example.

At this time, a voltage of +2.5 to +3.5 V and a voltage of -2 to -3 V was applied to the transparent electrode of the shading plate to measure the transmittance with respect to the wavelength of 550 nm in the transmission and shielding state.

Shading plate manufacture of comparative example

The shading plate of the comparative example was manufactured using the same method as the method of the present invention described above, but an optical flexible substrate without a protective layer was used.

6 is a chart showing the moisture transmittance and the light transmittance of the shading plate according to whether a protective layer is formed or not.

Referring to FIG. 6, in the comparative example, the water permeability is 5 × 10 ⁰ g / m ² day, whereas in the embodiment of the present invention, it is 7.8 × 10 ^-4 g / m ² day, The light transmittance was measured at 92% and 90%, respectively.

It can be seen that the formation of the protective layer on the flexible substrate improves the moisture barrier properties without changing the light transmittance.

7 is a table showing the light transmittance of the shading plate according to the number of driving times, and shows the transmittance at the time of transmission and the transmittance at the time of light shielding.

8A and 8B are graphs showing the light transmittance of the shading plate when driven 1000 times.

In the case of the shield plate of the comparative example without the protective layer, the transmission and shielding characteristics are decreased as the number of driving increases. However, in the shield plate of the embodiment having the protective layer, I could.

For example, in the case of the comparative example, the transmittance at the time of one time, 10 times, 100 times and 1000 times of driving was 91.1%, 91.1%, 90.2% and 86.3% The transmittance at 100 times and 1000 times of transmissivity was measured as 90.4%, 90.4%, 90.1% and 89.7%, respectively.

At this time, it can be seen that the transmittance when driven 1000 times decreased by 5.26% and 0.77% in the comparative example and the example, respectively, as compared with the transmittance when driven once.

As described above, the present invention provides a light-shielding plate having high penetration characteristics and barrier properties by using the electrochromic core-shell nanoparticles and a solid electrolyte, while forming a protective layer on the substrate backside of the light- By minimizing the influence of oxygen, it is possible to drive for a long time. By applying a light shielding plate having flexible characteristics to a transparent display, it is possible to provide a flexible transparent display with excellent performance.

While a great many are described in the foregoing description, it should be construed as an example of preferred embodiments rather than limiting the scope of the invention. Therefore, the invention should not be construed as limited to the embodiments described, but should be determined by equivalents to the appended claims and the claims.

100: Shading plate 101: Transparent panel
105, 110: flexible substrate 108, 118: transparent electrode
109, 119 protective layer 120 core-shell nanoparticle
125: electrolyte

Claims (15)

A transparent panel that displays information to be displayed in all or a part of the area in a state in which light can be transmitted through the entire screen; And
And a light shielding plate disposed on a rear surface of the transparent panel,
The shading plate
First and second flexible substrates;
A transparent electrode formed on inner surfaces of the first and second flexible substrates;
An electrochromic core-shell nanoparticle formed on the transparent electrode of the first flexible substrate and variably controlling transmission or blocking of light to the transparent panel;
An electrolyte formed on the transparent electrode of the second flexible substrate; And
And a protective layer formed on an outer surface of the first and second flexible substrates. The flexible transparent display according to claim 1, wherein the transparent panel is divided into a display part for displaying information and a transparent part capable of transmitting light at all times regardless of display of information. The display device according to claim 1, wherein the transparent panel
A light source for generating light;
A first polarizer for polarizing light emitted from the light source;
A light guide plate for emitting polarized light incident through the first polarizer to the front; And
And a liquid crystal panel for displaying an image by the light emitted through the light guide plate and a second polarizer. 3. The flexible transparent display according to claim 2, wherein the transparent electrode is formed only on the inner surfaces of the first and second flexible substrates at positions facing the display portion of the transparent panel. The flexible transparent display according to claim 1, wherein the core of the electrochromic core-shell nanoparticles has a particle diameter of 10 nm to 200 nm on a basis of a primary particle, and a thickness of the shell is 0.1 nm to 20 nm. The flexible transparent display of claim 1, wherein the electrolyte comprises a cured polymer electrolyte. The method of claim 1, wherein said protective barrier comprises SiNx, TiN, TaN, WN, TiSiN, TaSiN, TiO _5, Al ₂ O _3, HFO ₂ or transparent flexible display, characterized in that consisting of In ₂ O _3. The flexible transparent display according to claim 1, wherein the first and second flexible substrates are bonded to each other in a confronting manner and the ends are bonded using an epoxy resin. Preparing an electrochromic core-shell nanoparticle dispersion;
Preparing a transparent polymer electrolyte solution;
Forming a transparent electrode on one surface of the first and second flexible substrates;
Forming a protective layer on the other surface of the first and second flexible substrates;
Coating the dispersion of the electrochromic core-shell nanoparticles on the transparent electrode of the first flexible substrate to form an electrochromic layer;
Coating the polymer electrolyte solution on the transparent electrode of the second flexible substrate to form a polymer electrolyte layer;
Forming a light shielding plate by attaching a first flexible substrate on which the electrochromic layer is formed and a second flexible substrate on which the polymer electrolyte layer is formed; And
And attaching the shading plate to a back surface of a predetermined transparent panel. 10. The plasma display panel as claimed in claim 9, wherein the first and second flexible substrates having transparent electrodes formed on one surface of the first and second flexible substrates are placed in a plasma reactor, And exposing the flexible transparent display. 11. The method of claim 10, NH ₃ gas 500sccm, SiH ₄ gas 70sccm, the heating temperature is 80 ℃, RF power is performed 90 seconds in an 80W condition the first and the protective layer of 200nm thickness in the other side of the second flexible substrate And forming a transparent transparent display. 11. The method of claim 10, wherein said protective barrier comprises SiNx, TiN, TaN, WN, TiSiN, TaSiN, TiO _5, Al ₂ O _3, HFO ₂ or the method for producing a flexible transparent display as to form a In ₂ O ₃ . The electrochromic device according to claim 9, wherein the electrochromic layer is formed by spin-coating the electrochromic core-shell nanoparticle dispersion on the transparent electrode of the first flexible substrate at 500 rpm for 15 seconds and then drying at 90 ° C for 30 minutes to form Wherein the transparent substrate is a transparent substrate. The method according to claim 9, wherein the polymer electrolyte layer is formed by spin-coating the polymer electrolyte solution on the transparent electrode of the second flexible substrate at 500 rpm for 15 seconds and then drying at 110 캜 for 10 minutes A method of manufacturing a flexible transparent display. The method according to claim 9, wherein after the first flexible substrate and the second flexible substrate are bonded together, UV light of 1 J / cm ² is irradiated to cure the polymer electrolyte layer, and the ends are bonded using an epoxy bond Of the transparent transparent display.

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