KR20190079258A - Transparpnt display device - Google Patents

Abstract

The present invention provides a transparent display device capable of improving adhesion between a first transparent display panel and a second transparent display panel. A transparent display device according to an embodiment includes a first transparent display panel including a first light emission region and a first transmission region, a second transparent display panel including a second light emission region and a second light emission region, and an adhesive layer is disposed between the first transparent display panel and the second transparent display panel. Light is transmitted through at least one portion of the first light emission region and the second light emission region. It is possible to improve adhesion between the first transparent display panel and the second transparent display panel.

Description

[0001] TRANSPARPNT DISPLAY DEVICE [0002]

The present invention relates to a transparent display device.

Recently, as the information age is approaching, a display field for processing and displaying a large amount of information has been rapidly developed, and various display devices have been developed in response to this. The display device may be a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display (FED), an electroluminescence display device (ELD ), Organic Light Emitting Diodes (OLED)

In recent years, display devices have been made thinner, lighter, and lower in power consumption, and the application fields of display devices are continuously increasing. In particular, display devices are used as one of the user interfaces in most electronic devices and mobile devices.

In addition, in recent years, studies have been made actively on a transparent display device, in which a user can see an object or a background located on the back side of the display device. The transparent display device has advantages of space utilization, interior and design, and can have various application fields. The transparent display device realizes the functions of information recognition, information processing, and information display in a transparent electronic device, thereby solving the spatial and visual restrictions of the existing electronic device. For example, the transparent display device may be implemented as a smart window that is applied to a building or a car window to display a background or display an image.

The transparent display device includes an anode electrode, a bank for partitioning the anode electrodes, and a hole transporting layer, an organic light emitting layer, and an electron transporting layer formed on the anode electrodes, And an organic light emitting display device including a cathode electrode formed on the electron transporting layer. In this case, when a high potential voltage is applied to the anode electrode and a low potential voltage is applied to the cathode electrode, holes and electrons move to the organic light emitting layer through the hole transporting layer and the electron transporting layer, respectively.

On the other hand, in recent years, techniques for viewing an image on both the front surface and the back surface of a transparent display device have been studied. In order to view an image on both the front surface and the back surface, the transparent display device includes a first transparent display panel for displaying an image on the front surface and a second transparent display panel for displaying an image on the rear surface, Thereby attaching the first transparent display panel and the second transparent display panel.

At this time, the adhesive layer disposed between the first transparent display panel and the second transparent display panel can be cured by irradiating UV light. However, since the anode electrode formed on the first transparent display panel or the second transparent display panel is opaque, UV does not reach the adhesive layer. Accordingly, the adhesive layer can not be cured in the region where the anode electrode is disposed, so that the adhesion between the first transparent display panel and the second transparent display panel can be deteriorated.

The present invention provides a transparent display device capable of improving the adhesion between the first transparent display panel and the second transparent display panel.

A transparent display device according to an embodiment of the present invention includes a first transparent display panel including a first light emitting region and a first transmissive region, a second transparent display panel including a second light emitting region and a second light emitting region, 1 transparent display panel and an adhesive layer disposed between the first transparent display panel and the second transparent display panel. And light is transmitted through a part of at least one of the first light emitting region and the second light emitting region.

In an embodiment of the present invention, the anode electrode of the white pixel may be formed of a transparent metal material or a semitransparent metal material capable of transmitting light. The embodiment of the present invention can transmit not only the transmissive region but also the light emitting region in which the white pixel is disposed in order to cure the adhesive layer in the process of bonding between the first transparent display panel and the second transparent display panel. Thus, the embodiment of the present invention can improve the adhesion between the first transparent display panel and the second transparent display panel.

In addition, in the embodiment of the present invention, the anode electrode of each of the red pixel, the green pixel, and the blue pixel may be formed of a reflective metallic material capable of reflecting light. Accordingly, the embodiment of the present invention can improve the adhesion between the first transparent display panel and the second transparent display panel without reducing the luminous efficiency.

In addition, the embodiment of the present invention may form holes or slits so that light can be transmitted through the anode electrode. Accordingly, in the embodiment of the present invention, the region through which UV is transmitted can be evenly distributed throughout the light emitting region, so that the adhesive force between the first transparent display panel and the second transparent display panel can be further improved.

In addition to the effects of the present invention mentioned above, other features and advantages of the present invention will be described below, or may be apparent to those skilled in the art from the description and the description.

1 is a perspective view showing a transparent display device according to an embodiment of the present invention.
2 is a perspective view showing a first transparent display panel and a second transparent display panel of a transparent display device according to an embodiment of the present invention.
3 is an exemplary view showing pixels of the first display area of FIG.
4 is a cross-sectional view showing the first embodiment of I-I 'shown in FIG.
5 is a view showing a region irradiated with UV in a process of attaching a transparent display device according to the first embodiment of the present invention.
6 is a cross-sectional view showing a second embodiment of I-I 'shown in FIG.
7 is a view showing a region irradiated with UV in a process of attaching a transparent display device according to a second embodiment of the present invention.
8 is a cross-sectional view showing a third embodiment of I-I 'shown in FIG.
FIG. 9A is a view schematically showing an example in which holes are formed in the first and second anode electrodes. FIG.
9B is a schematic view showing an example in which slits are formed in the first and second anode electrodes.
10 is a view showing a region irradiated with UV in a process of attaching a transparent display device according to a third embodiment of the present invention.
11 is a cross-sectional view showing a fourth embodiment of I-I 'shown in FIG.

Like reference numerals throughout the specification denote substantially identical components. In the following description, detailed descriptions of configurations and functions that are not related to the core configuration of the present invention and known in the technical field of the present invention can be omitted. The meaning of the terms described herein should be understood as follows.

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. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Where the terms "comprises," "having," "consisting of," and the like are used in this specification, other portions may be added as long as "only" is not used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

In the case of a description of a temporal relationship, for example, if the temporal relationship is described by 'after', 'after', 'after', 'before', etc., May not be continuous unless they are not used.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

The terms "X-axis direction "," Y-axis direction ", and "Z-axis direction" should not be construed solely by the geometric relationship in which the relationship between them is vertical, It may mean having directionality.

It should be understood that the term "at least one" includes all possible combinations from one or more related items. For example, the meaning of "at least one of the first item, the second item and the third item" means not only the first item, the second item or the third item, but also the second item and the second item among the first item, May refer to any combination of items that may be presented from more than one.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

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

1 is a perspective view showing a transparent display device according to an embodiment of the present invention. 2 is a perspective view showing a first transparent display panel and a second transparent display panel of a transparent display device according to an embodiment of the present invention.

Hereinafter, a transparent display device according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. FIG. In FIGS. 1 and 2, the X-axis represents the direction parallel to the gate lines, the Y-axis represents the direction parallel to the data lines, and the Z-axis represents the height direction of the transparent display device.

Referring to FIGS. 1 and 2, a transparent display device according to an embodiment of the present invention includes a first transparent display panel 100, a second transparent display panel 200, and an adhesive layer 300.

Although the transparent display device according to the embodiment of the present invention is described as being implemented with an organic light emitting display, it may be implemented as a liquid crystal display (LCD) or an electrophoretic display .

The first transparent display panel 100 includes a first lower substrate 111, a first upper substrate 112, a first gate driver 120, a first source driver integrated circuit (IC) A first flexible film 140, a first display circuit board 150, and a first timing controller 160. The first flexible film 140,

The first transparent display panel 100 includes a first lower substrate 111 and a first upper substrate 112 facing each other. The first upper substrate 112 may be an encapsulating substrate. The first lower substrate 111 is formed larger than the first upper substrate 112 so that a part of the first lower substrate 111 can be exposed without being covered by the first upper substrate 112.

First gate lines and first data lines are formed in a first display area DA1 of the first transparent display panel 100 and first pixels are formed in intersecting areas of first gate lines and first data lines . The first pixels of the first display area DA1 can display an image. Concrete contents of the first display area DA1 will be described later.

The first gate driver 120 supplies gate signals to the first gate lines in response to a gate control signal input from the first timing controller 160. In FIG. 2, the first gate driver 120 is formed on the outside of the first display area DA1 of the first transparent display panel 100 by a gate driver in panel (GIP) method, but the present invention is not limited thereto . That is, the first gate driver 120 may be formed on the outside of both sides of the first display area DA1 of the first transparent display panel 100 in a GIP system, or may be formed of a driving chip and mounted on a flexible film Or may be attached to the first transparent display panel 100 by a tape automated bonding (TAB) method.

The first source driver IC 130 receives the digital video data and the source control signal from the first timing controller 160. The first source driver IC 130 converts the digital video data into analog data voltages according to the source control signal and supplies the analog data voltages to the first data lines. The first source drive IC 130 may be mounted on the first flexible film 140 using a chip on film (COF) method or a chip on plastic (COP) method.

Since the first lower substrate 111 is larger than the first upper substrate 112, a part of the first lower substrate 111 can be exposed without being covered by the first upper substrate 112. [ Display pads are provided on a part of the first lower substrate 111 which is not covered by the first upper substrate 112 and is exposed. The display pads may be data pads.

Wirings connecting the display pads and the first source drive IC 130 and wirings connecting the display pads and the wirings of the first display circuit board 150 are formed in the first flexible film 140 . The first flexible film 140 is attached to the display pads using an anisotropic conducting film so that the display pads and the wires of the first flexible film 140 can be connected.

The first display circuit board 150 may be attached to the first flexible films 140. The first display circuit board 150 can be implemented with a plurality of circuits implemented with driving chips. For example, the first timing control unit 160 may be mounted on the first display circuit board 150. The first display circuit board 150 may be a printed circuit board or a flexible printed circuit board.

The first timing controller 160 receives digital video data and a timing signal from an external system board (not shown). The first timing controller 160 generates a gate control signal for controlling the operation timing of the first gate driver 120 and a source control signal for controlling the first source driver ICs 130 based on the timing signal. The first timing controller 160 supplies a gate control signal to the first gate driver 120 and a source control signal to the first source driver ICs 130.

The second transparent display panel 200 includes a second lower substrate 211, a second upper substrate 212, a second gate driver 220, a second source driver IC 230, a second flexible film 240, A second display circuit board 250, and a second timing controller 260.

The second transparent display panel 200 includes a second lower substrate 211 and a second upper substrate 212 facing each other. The second upper substrate 212 may be an encapsulating substrate. The second lower substrate 211 is formed larger than the second upper substrate 212 so that a part of the second lower substrate 211 can be exposed without being covered by the second upper substrate 212.

The second gate lines and the second data lines are formed in the second display area DA2 of the second transparent display panel 200 and the second pixels are formed in the intersecting areas of the second gate lines and the second data lines . And the second pixels in the second display area DA2 can display an image. Concrete contents of the second display area DA2 will be described later.

The second gate driver 220 supplies gate signals to the second gate lines according to a gate control signal input from the second timing controller 260. In FIG. 2, the second gate driver 220 is formed on the outside of one side of the second display area DA2 of the second transparent display panel 200 in a gate driver in panel (GIP) manner, but the present invention is not limited thereto . That is, the second gate driver 220 may be formed on the outside of both sides of the second display area DA2 of the second transparent display panel 200 by the GIP method, or may be formed of a driving chip and mounted on the flexible film Or may be attached to the second transparent display panel 200 by a tape automated bonding (TAB) method.

The second source driver IC 230 receives the digital video data and the source control signal from the second timing controller 260. The second source driver IC 230 converts the digital video data into analog data voltages according to the source control signal and supplies the analog data voltages to the second data lines. The second source drive IC 230 may be mounted on the second flexible film 240 using a chip on film (COF) method or a chip on plastic (COP) method.

The size of the second lower substrate 211 is larger than that of the second upper substrate 212 so that a part of the second lower substrate 211 can be exposed without being covered by the second upper substrate 212. Display pads are provided on a part of the second lower substrate 211 exposed by the second upper substrate 212. The display pads may be data pads.

Wires connecting the display pads and the second source drive IC 230 to the second flexible film 240, and wirings connecting the display pads and the wirings of the second display circuit board 250 are formed . The second flexible film 240 is attached to the display pads using an anisotropic conducting film, whereby the display pads and the wires of the second flexible film 240 can be connected.

The second display circuit board 250 may be attached to the second flexible films 240. The second display circuit board 250 may be implemented with a plurality of circuits implemented with driving chips. For example, the second timing control unit 260 may be mounted on the second display circuit board 250. The second display circuit board 250 may be a printed circuit board or a flexible printed circuit board.

The second timing controller 260 receives digital video data and timing signals from an external system board (not shown). The second timing controller 260 generates a gate control signal for controlling the operation timing of the second gate driver 220 and a source control signal for controlling the second source driver ICs 230 based on the timing signal. The second timing controller 260 supplies a gate control signal to the second gate driver 220 and a source control signal to the second source driver ICs 230.

The adhesive layer 300 bonds the first transparent display panel 100 and the second transparent display panel 200 together. More specifically, the adhesive layer 300 is disposed between the first lower substrate 111 of the first transparent display panel 100 and the second lower substrate 111 of the second transparent display panel 200, (100) and the second transparent display panel (200). The adhesive layer 300 may be a transparent adhesive such as OCA (optically clear adhesive) or a transparent adhesive such as OCR (optically clear RPsin).

1st Example

3 is an exemplary view showing pixels of the first display area of FIG. 4 is a cross-sectional view showing the first embodiment of I-I 'shown in FIG.

Referring to FIGS. 3 and 4, the first display area DA1 includes a first transmissive area TA1 and a first light emitting area EA1. The first transparent display panel 100 can see an object or a background located on the back surface of the first transparent display panel 100 due to the first transmissive areas TA1, So that an image can be displayed. In FIG. 3, the first transmissive area TA1 and the first light emitting area EA1 are formed to be long in the gate line direction (X-axis direction), but the present invention is not limited thereto. That is, the first transmissive area TA1 and the first light emitting area EA1 may be formed long in the data line direction (Y-axis direction).

The first transmissive area TA1 is an area through which the incident light almost passes. The first light emitting region EA1 is a region for emitting light. The first light emitting region EA1 may include a plurality of first pixels P1 and each of the first pixels P1 may include a first red pixel RP1 and a first white pixel WP1, A first green pixel GP1, and a first blue pixel BP1. However, the present invention is not limited thereto. For example, each of the first pixels P includes a first red pixel RP1, a first white pixel WP1, a first green pixel GP1, and a first blue pixel BP1, a first yellow pixel WP1, a first magenta pixel, a yellow magenta pixel, a first magenta pixel, and a first cyan pixel.

The first red pixel RP1 is a pixel for emitting red light and the first white pixel WP1 is a pixel for emitting white light. The first green pixel GP1 is a pixel for emitting green light and the first blue pixel BP1 is a pixel for emitting blue light. The first red pixel RP1, the first white pixel WP1, the first green pixel GP1 and the first blue pixel BP1 of the first light emitting region EA1 emit predetermined light.

As shown in FIG. 4, the first transistor DT1 and the first anode electrode (first electrode) DL1 are connected to the first red pixel RP1, the first white pixel WP1, the first green pixel GP1, and the first blue pixel BP1, AND1, a first organic layer EL1, and a first cathode electrode CAT1.

The first transistor DT1 includes a first active layer ACT1, a first gate electrode GP1, a first source electrode SE1 and a first drain electrode DE1.

 On the first lower substrate 111, a first active layer ACT1 is formed. The first active layer ACT1 may be formed of a silicon-based semiconductor material or an oxide-based semiconductor material. A light shielding layer may be formed between the first lower substrate 111 and the first active layer ACT1 to block external light incident on the first active layer ACT1.

A first gate insulating film GI1 is formed on the first active layer ACT1. The first gate insulating film GI1 may be formed of an inorganic film, for example, a silicon oxide film (SiO _x ), a silicon nitride film (SiN _x ), or a multilayer film thereof.

A first gate electrode GP1 and a first gate line are formed on the first gate insulating film GI1. The first gate electrode GP1 and the first gate line may be formed of at least one selected from the group consisting of Mo, Al, Cr, Au, Ti, Cu), or an alloy thereof.

4, the first transistor DT1 is formed in a top-gate manner. However, the present invention is not limited thereto, and the first gate electrode GP1 may be formed in a bottom gate structure in which the first gate electrode GP1 is disposed under the first active layer ACT1 .

A first interlayer insulating film II1 is formed on the first gate electrode GP1 and the first gate line. The first interlayer insulating film II1 may be formed of an inorganic film, for example, a silicon oxide film (SiO _x ), a silicon nitride film (SiN _x ), or a multilayer film thereof.

A first source electrode SE1, a first drain electrode DE1, and a first data line are formed on the first interlayer insulating film II1. The first source electrode SE1 and the first drain electrode DE1 may be connected to the first active layer ACT1 through the contact holes passing through the first gate insulating film GI1 and the first interlayer insulating film II1 have. The first source electrode SE1, the first drain electrode DE1 and the first data line may be formed of a metal such as molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti) , Neodymium (Nd), and copper (Cu), or an alloy thereof.

A first passivation layer PAS1 may be formed on the first source electrode SE1, the first drain electrode DE1 and the first data line to isolate the first transistor DT1. The first protective film PAS1 may be formed of an inorganic film, for example, a silicon oxide film (SiO _x ), a silicon nitride film (SiN _x ), or a multilayer film thereof.

A first planarizing film PLN1 is formed on the first protective film PAS1 to flatten a step due to the first transistor DT1. The first planarizing film PLN1 is formed of an organic film such as acryl RPsin, epoxy RPsin, phenolic RPsin, polyamide RPsin, and polyimide RPsin. .

The first organic light emitting diode OLE1 and the first bank B1 are formed on the first planarization layer PLN1. The first organic light emitting diode OLE1 includes a first anode electrode AND1, a first organic light emitting layer EL1, and a first cathode electrode CAT1.

The first anode electrode AND1 is formed on the first planarization film PLN1. The first anode electrode AND1 is connected to the first source electrode SE1 through the first passivation layer PAS1 provided on the first drain electrode DE1 and the contact hole passing through the first planarization layer PLN1, Is connected to the first source electrode SE1 of the first transistor DT1. A first bank B1 is provided between the first anode electrodes AND1 adjacent to each other, so that the first anode electrodes AND1 adjacent to each other can be electrically insulated.

The first anode electrode (AND1) can transmit light in a part thereof. Specifically, the first anode electrode AND1 of the first white pixel WP1 can transmit light. The first anode electrode AND1 of the first white pixel WP1 may be formed of a transparent conductive material such as ITO or IZO or a transparent conductive material such as magnesium, It may be formed of a semi-transmissive conductive material such as an alloy of magnesium (Mg) and silver (Ag).

On the other hand, the first anode electrode AND1 of each of the first red pixel RP1, the first green pixel GP1, and the first blue pixel BP1 may reflect light. The first anode electrode AND1 of each of the first red pixel RP1, the first green pixel GP1 and the first blue pixel BP1 is formed of a laminated structure of aluminum and titanium (Ti / Al / Ti) (ITO / Al / ITO), an APC alloy, and a laminated structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

A first organic layer EL1 is formed on the first anode electrode AND1. The first organic layer EL1 is a common layer commonly formed in the first red pixel RP1, the first white pixel WP1, the first green pixel GP1 and the first blue pixel BP1, And may be a white light emitting layer emitting light. In this case, the first organic layer EL1 may be formed in a tandem structure of two stacks or more. Each of the stacks may include a hole transporting layer, at least one organic light emitting layer, and an electron transporting layer.

A first cathode electrode CAT1 is formed on the first organic layer EL1. The first cathode electrode CAT1 is a common layer commonly formed in the first red pixel RP1, the first white pixel WP1, the first green pixel GP1 and the first blue pixel BP1, And may be formed so as to cover the organic layer EL1. When a voltage is applied to the first anode electrode (AND1) and the first cathode electrode (CAT1), holes and electrons move to the organic light emitting layer through the hole transporting layer and the electron transporting layer, respectively.

The first cathode electrode CAT1 may be formed of a transparent conductive material such as ITO or IZO that can transmit light or a transparent conductive material such as magnesium (Mg), silver (Ag), or magnesium (Mg) (Semi-transmissive Conductive Material). When the first cathode electrode CAT1 is formed of a semitransparent metal material, the efficiency of outgoing light can be increased by a microcavity. A capping layer may be formed on the first cathode electrode CAT1.

A first encapsulation layer EN1 is formed on the first cathode electrode CAT1. The first encapsulation layer EN1 prevents oxygen or moisture from penetrating into the first organic layer EL1 and the first cathode electrode CAT1. To this end, the first encapsulation layer EN1 may include at least one inorganic film and at least one organic film.

First color filters RCF1, WCF1, BCF1 and GCF1 and a first black matrix BM1 are formed on the first encapsulation layer EN1. The first color filters include a first red color filter RCF1, a first white color filter WCF1, a first blue color filter BCF1 and a first green color filter GCF1 having different transmission wavelength ranges . The first red color filter (RCF1) may be formed of an organic film including a red pigment, and the first white color filter (WCF1) may be formed of a transparent organic film. At this time, the transparent organic film may be formed of acryl RPsin, epoxy RPsin, phenolic RPsin, polyamide RPsin, or polyimide RPsin. The first blue color filter BCF1 may be formed of an organic film including a blue pigment, and the first green color filter GCF1 may be formed of an organic film including a green pigment.

Although FIG. 4 shows the first white color filter WCF1, it is not limited thereto. In another embodiment, the first white color filter WCFl may be omitted.

A first black matrix BM1 is formed at the boundary between the first red color filter RCF1, the first white color filter WCF1, the first blue color filter BCF1 and the first green color filter GCF1. The first black matrix BM1 prevents the light of one pixel from proceeding to the color filter of adjacent pixels to cause color mixing.

The transparent display device according to the first embodiment of the present invention is characterized in that the first anode electrode AND1 of the first white pixel WP1 is formed of a transparent metal material or a semi- . In order to cure the adhesive layer 300 in the process of adhesion with the second transparent display panel 200, the first transparent display panel 100 having such a structure is irradiated with UV to be irradiated not only in the first transmissive area TA1, Can also be transmitted through the first light emitting region EA1 in which the white pixel WP1 is disposed.

Accordingly, the transparent display device according to the first embodiment of the present invention has a larger area for curing the adhesive layer 300 than the conventional transparent display device in which the adhesive layer 300 is cured only in the first transmissive area TA1 . As a result, the transparent display device according to the first embodiment of the present invention can improve the adhesion between the first transparent display panel 100 and the second transparent display panel 200.

Meanwhile, in the transparent display device according to the first embodiment of the present invention, the first anode electrode (AND1) of each of the first red pixel (RP1), the first green pixel (GP1) and the first blue pixel (BP1) And is formed of a reflective metallic material that can reflect light.

A first red color filter RCF1, a first green color filter GCF1 and a first blue color filter BCF1 are connected to the first red pixel RP1, the first green pixel GP1 and the first blue pixel BP1, Respectively. When UV is irradiated in order to cure the adhesive layer 300 in the process of attaching the first transparent display panel 100 and the second transparent display panel 200, UV is irradiated to the first red color filter RCF1, Light passing through the color filter GCF1 and the first blue color filter BCF1 can not pass through a part of the wavelength range but is partially transmitted. For this reason, the first anode electrode (AND1) of each of the first red pixel (RP1), the first green pixel (GP1) and the first blue pixel (BP1) is made of a transparent metal material or a semi- The effect of improving the adhesive force is not significant because the UV reaching the adhesive layer 300 is weak.

On the other hand, if the first anode electrode AND1 of each of the first red pixel RP1, the first green pixel GP1 and the first blue pixel BP1 is formed of a transparent metal material or a semi- The luminous efficiency in the first red pixel RP1, the first green pixel GP1 and the first blue pixel BP1 is greatly reduced.

That is, the transparent display device may include a transparent metal material or semi-transparent material capable of transmitting light through the first anode electrode (AND1) of each of the first red pixel (RP1), the first green pixel (GP1), and the first blue pixel The effect is not large when formed from a transparent metal material, but is rather undesirable because the luminous efficiency is greatly reduced. For this reason, in the transparent display device according to the first embodiment of the present invention, the first anode electrode (AND1) of each of the first red pixel (RP1), the first green pixel (GP1) and the first blue pixel (BP1) It is possible to improve the luminous efficiency.

The second display area DA2 includes a second transmissive area TA2 and a second light emitting area EA2. The second transparent display panel 200 can see the object or the background located on the back surface of the second transparent display panel 200 due to the second transmissive areas TA2, So that an image can be displayed. In FIG. 3, the second transmissive area TA2 and the second light emitting area EA2 are formed to be long in the gate line direction (X-axis direction), but the present invention is not limited thereto. That is, the second transmissive area TA2 and the second light emitting area EA2 may be formed long in the data line direction (Y-axis direction).

The second transmissive area TA2 is an area through which the incident light is substantially transmitted, and is arranged to correspond to the first transmissive area TA1 of the first transparent display panel 100 as shown in FIG. The second emission region EA2 emits light and is arranged to correspond to the first emission region EA1 of the first transparent display panel 100. [

The second light emitting area EA2 may include a plurality of second pixels P2. Each of the plurality of second pixels P2 includes a second red pixel RP2, a second white pixel WP2, a second green pixel GP2, and a second blue pixel BP1 as shown in FIG. 3 But is not limited thereto. For example, each of the second pixels P includes a second red pixel RP2, a second white pixel WP2, a second green pixel GP2, and a second blue pixel BP2, a second yellow pixel WP2, pixels, a second magenta pixel, a yellow magenta pixel, a second magenta pixel, and a second cyan pixel.

The second red pixel RP2 is a pixel for emitting red light as shown in FIG. 4, and is arranged to correspond to the first red pixel RP1 of the first transparent display panel 100. [ The second white pixel WP2 is a pixel for emitting white light and is arranged to correspond to the first white pixel WP1 of the first transparent display panel 100. [ The second green pixel GP2 emits green light and is arranged to correspond to the first green pixel GP1 of the first transparent display panel 100. [ The second blue pixel BP2 is a pixel that emits blue light and is arranged to correspond to the first blue pixel BP1 of the first transparent display panel 100. [ The second red pixel RP2, the second white pixel WP2, the second green pixel GP2 and the second blue pixel BP2 of the second light emitting area EA2 emit predetermined light.

As shown in FIG. 4, the second transistor DT2 and the second anode electrode BP2 are respectively connected to the second red pixel RP2, the second white pixel WP2, the second green pixel GP2, and the second blue pixel BP2. AND2, a second organic layer EL2, and a second cathode electrode CAT2.

The second transistor DT2 includes a second active layer ACT2, a second gate electrode GP2, a second source electrode SE2 and a second drain electrode DE2.

 On the second lower substrate 211, a second active layer ACT2 is formed. The second active layer ACT2 may be formed of a silicon-based semiconductor material or an oxide-based semiconductor material. A light shielding layer for shielding external light incident on the second active layer ACT2 may be formed between the second lower substrate 211 and the second active layer ACT2.

A second gate insulating film GI2 is formed on the second active layer ACT2. The second gate insulating film GI2 may be formed of an inorganic film, for example, a silicon oxide film (SiO _x ), a silicon nitride film (SiN _x ), or a multilayer film thereof.

A second gate electrode GP2 and a second gate line are formed on the second gate insulating film GI2. The second gate electrode GP2 and the second gate line may be formed of at least one selected from the group consisting of Mo, Al, Cr, Au, Ti, Cu), or an alloy thereof.

4, the second transistor DT2 is formed in a top gate manner. However, the second transistor DT2 is not limited thereto, and the second gate electrode GP2 may be formed in a bottom gate structure in which the second gate electrode GP2 is disposed under the second active layer ACT2 .

A second interlayer insulating film II2 is formed on the second gate electrode GP2 and the second gate line. The second interlayer insulating film II2 may be formed of an inorganic film, for example, a silicon oxide film (SiO _x ), a silicon nitride film (SiN _x ), or a multilayer film thereof.

A second source electrode SE2, a second drain electrode DE2 and a second data line are formed on the second interlayer insulating film II2. Each of the second source electrode SE2 and the first drain electrode DE2 may be connected to the second active layer ACT2 through the contact holes passing through the second gate insulating film GI2 and the first interlayer insulating film II2 have. The second source electrode SE2, the second drain electrode DE2 and the second data line may be formed of a metal such as molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti) , Neodymium (Nd), and copper (Cu), or an alloy thereof.

A second protective film PAS2 for isolating the second transistor DT2 may be formed on the second source electrode SE2, the second drain electrode DE2 and the second data line. The second protective film PAS2 may be formed of an inorganic film, for example, a silicon oxide film (SiO _x ), a silicon nitride film (SiN _x ), or a multilayer film thereof.

A second planarizing film PLN2 is formed on the second protective film PAS2 to flatten a step due to the second transistor DT2. The second planarizing film PLN2 is formed of an organic film such as acryl RPsin, epoxy RPsin, phenolic RPsin, polyamide RPsin or polyimide RPsin. .

The second organic light emitting diode OLE2 and the second bank B2 are formed on the second planarization layer PLN2. The second organic light emitting diode OLE2 includes a second anode electrode AND2, a second organic light emitting layer EL2, and a second cathode electrode CAT2.

And the second anode electrode AND2 is formed on the second planarizing film PLN2. The second anode electrode AND2 is connected to the second source electrode SE2 through the second protective film PAS2 provided on the second drain electrode DE2 and the contact hole passing through the second planarization film PLN1, And the second source electrode SE2 of the second transistor DT2. A second bank B2 is provided between the adjacent second anode electrodes AND2 so that the adjacent second anode electrodes AND2 can be electrically isolated.

And the second anode electrode AND2 can transmit light in a part thereof. Specifically, the second anode electrode AND2 of the second white pixel WP2 can transmit light. The second anode electrode AND2 of the second white pixel WP2 may be formed of a transparent conductive material such as ITO or IZO or a transparent conductive material such as magnesium, It may be formed of a semi-transmissive conductive material such as an alloy of magnesium (Mg) and silver (Ag).

On the other hand, the second anode electrode AND2 of each of the second red pixel RP2, the second green pixel GP2, and the second blue pixel BP2 may reflect light. The second anode electrode AND2 of each of the second red pixel RP2, the second green pixel GP2 and the second blue pixel BP2 includes a laminated structure of aluminum and titanium (Ti / Al / Ti) (ITO / Al / ITO), an APC alloy, and a laminated structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

And a second organic layer EL2 is formed on the second anode electrode AND2. The second organic layer EL2 is a common layer commonly formed in the second red pixel RP2, the second white pixel WP2, the second green pixel GP2 and the second blue pixel BP2, And may be a white light emitting layer emitting light. In this case, the second organic layer EL2 may be formed in a tandem structure of two stacks or more. Each of the stacks may include a hole transporting layer, at least one organic light emitting layer, and an electron transporting layer.

A second cathode electrode CAT2 is formed on the second organic layer EL2. The second cathode electrode CAT2 is a common layer commonly formed in the second red pixel RP2, the second white pixel WP2, the second green pixel GP2 and the second blue pixel BP2, And may be formed so as to cover the organic layer EL2. When a voltage is applied to the second anode electrode AND2 and the second cathode electrode CAT2, the holes and electrons move to the organic light emitting layer through the hole transporting layer and the electron transporting layer, respectively.

The second cathode electrode CAT2 may be formed of a transparent conductive material such as ITO or IZO that can transmit light or a transparent conductive material such as magnesium (Mg), silver (Ag), or magnesium (Mg) (Semi-transmissive Conductive Material). When the second cathode electrode CAT2 is formed of a semitransparent metal material, the efficiency of outgoing light can be increased by a microcavity. A capping layer may be formed on the second cathode electrode CAT1.

A second encapsulation layer EN1 is formed on the second cathode electrode CAT2. The second encapsulation layer EN2 prevents oxygen or moisture from penetrating into the second organic layer EL2 and the second cathode electrode CAT2. To this end, the second encapsulation layer EN2 may include at least one inorganic film and at least one organic film.

Second color filters RCF2, WCF2, BCF2, and GCF2 and a second black matrix BM2 are formed on the second encapsulation layer EN2. The second color filters include a second red color filter (RCF2), a second white color filter (WCF2), a second blue color filter (BCF2) and a second green color filter (GCF2) having different transmission wavelength ranges . The second red color filter (RCF2) may be formed of an organic film containing a red pigment, and the second white color filter (WCF2) may be formed of a transparent organic film. At this time, the transparent organic film may be formed of acryl RPsin, epoxy RPsin, phenolic RPsin, polyamide RPsin, or polyimide RPsin. The second blue color filter BCF2 may be formed of an organic film including a blue pigment, and the second green color filter GCF2 may be formed of an organic film including a green pigment.

Although FIG. 4 shows the second white color filter WCF2, it is not limited thereto. In another embodiment, the second white color filter WCF2 may be omitted.

A second black matrix BM2 is formed at the boundary between the second red color filter RCF2, the second white color filter WCF2, the second blue color filter BCF2 and the second green color filter GCF2. The second black matrix BM2 prevents the light of one pixel from proceeding to the color filters of adjacent pixels to cause color mixing.

The transparent display device according to the first embodiment of the present invention is characterized in that the second anode electrode AND2 of the second white pixel WP2 is formed of a transparent metal material or a semi- . The second transparent display panel 200 having such a structure is configured such that the UV to be irradiated for curing the adhesive layer 300 in the adhesion process with the first transparent display panel 200 is irradiated not only to the second transmissive area TA2, Can also be transmitted through the second light emitting area EA2 in which the white pixel WP2 is disposed.

Accordingly, the transparent display device according to the first embodiment of the present invention has a larger area for curing the adhesive layer 300 than the conventional transparent display device in which the adhesive layer 300 is cured only in the second transmissive area TA2 . As a result, the transparent display device according to the first embodiment of the present invention can improve the adhesion between the first transparent display panel 100 and the second transparent display panel 200.

Meanwhile, in the transparent display device according to the first embodiment of the present invention, the second anode electrode (AND2) of each of the second red pixel (RP2), the second green pixel (GP2) and the second blue pixel (BP2) And is formed of a reflective metallic material that can reflect light.

A second red color filter RCF2, a second green color filter GCF2 and a second blue color filter BCF2 are connected to the second red pixel RP2, the second green pixel GP2 and the second blue pixel BP2, Respectively. When the UV is irradiated to cure the adhesive layer 300 in the process of attaching the first transparent display panel 100 and the second transparent display panel 200, UV is applied to the second red color filter RCF2, The light passes through the color filter GCF2 and the second blue color filter BCF2 but does not transmit light in a part of the wavelength range. For this reason, the second anode electrode (AND2) of each of the second red pixel (RP2), the second green pixel (GP2) and the second blue pixel (BP2) is formed of a transparent metal material or a semi- The effect of improving the adhesive force is not significant because the UV reaching the adhesive layer 300 is weak.

On the other hand, the second anode electrode (AND2) of each of the second red pixel (RP2), the second green pixel (GP2) and the second blue pixel (BP2) is formed of a transparent metal material or a semi- The luminous efficiency in the second red pixel RP2, the second green pixel GP2 and the second blue pixel BP2 is greatly reduced.

In other words, the transparent display device may be formed of a transparent metal material or semi-transparent material capable of transmitting light through the second anode electrode (AND2) of each of the second red pixel (RP2), the second green pixel (GP2), and the second blue pixel The effect is not large when formed from a transparent metal material, but is rather undesirable because the luminous efficiency is greatly reduced. For this reason, in the transparent display device according to the first embodiment of the present invention, the second anode electrode (AND2) of each of the second red pixel (RP2), the second green pixel (GP2) and the second blue pixel (BP2) It is possible to improve the luminous efficiency.

5 is a view showing a region irradiated with UV in a process of attaching a transparent display device according to the first embodiment of the present invention.

Referring to FIG. 5, the transparent display device according to the first embodiment of the present invention includes a first transparent display panel 100, a second transparent display panel 200, and an adhesive layer 300.

The first transparent display panel 100 includes a first transmissive area TA1 and a first light emitting area EA1. The first transparent display panel 100 includes a first red pixel RP1, a first white pixel WP1, a first blue pixel BP1 and a first green pixel GP1 arranged in a first light emitting area EA1. And a first red color filter RCF1 and a second white color filter RCF2 so as to correspond to the first red pixel RP1, the first white pixel WP1, the first blue pixel BP1 and the first green pixel GP1, The filter WCF1, the first blue color filter BCF1, and the first green color filter GCF1 are disposed, respectively.

At this time, the first anode electrode AND1 of the first white pixel WP1 is formed of a transparent metal material or a semitransparent metal material. The first anode electrode AND1 of each of the first red pixel RP1, the first blue pixel BP1 and the first green pixel GP1 is formed of a reflective metallic material.

The second transparent display panel 200 includes a second transmissive area TA2 corresponding to the first transmissive area TA1 of the first transparent display panel 100 and a second transmissive area TA2 corresponding to the first transmissive area TA1 of the first transparent display panel 100. [ And a second emission region EA2 corresponding to the emission region EA1. The second transparent display panel 200 is configured such that the second red pixel RP2, the second white pixel WP2, the second blue pixel BP2 and the second green pixel GP2 are arranged in the second light emitting area EA2 And a second red color filter RCF2 and a second white color filter RF2 are respectively connected to the second red pixel RP2, the second white pixel WP2, the second blue pixel BP2 and the second green pixel GP2, WCF2, a second blue color filter BCF2, and a second green color filter GCF2, respectively.

At this time, the second anode electrode AND2 of the second white pixel WP2 is formed of a transparent metal material or a semitransparent metal material. The second anode electrode AND2 of each of the second red pixel RP2, the second blue pixel BP2 and the second green pixel GP2 is formed of a reflective metallic material.

The adhesive layer 300 is formed between the first transparent display panel 100 and the second transparent display panel 200.

In the process of attaching the first transparent display panel 100 and the second transparent display panel 200, the UV is transferred from the second transparent display panel 200 to the first transparent display panel 100 In the first direction.

UV can not transmit the second red pixel RP2 because the second anode electrode AND2 of the second red pixel RP2 is made of a reflective metallic material. Accordingly, UV does not reach the adhesive layer 300 in the region where the second red pixel RP2 is formed.

Since the second anode electrode AND2 of the second white pixel WP2 and the first anode electrode AND1 of the first white pixel WP1 are made of a transparent metal material or a semitransparent metal material, (WP2) and the first white pixel (WP1). Accordingly, UV can reach the adhesive layer 300 in the region where the second white pixel WP2 is formed.

UV can not transmit the second blue pixel BP2 since the second anode electrode AND2 of the second blue pixel BP2 is made of a reflective metallic material. Accordingly, UV does not reach the adhesive layer 300 in the region where the second blue pixel BP2 is formed.

UV can not transmit the second green pixel GP2 since the second anode electrode AND2 of the second green pixel GP2 is made of a reflective metallic material. Accordingly, the UV does not reach the adhesive layer 300 in the region where the second green pixel GP2 is formed.

The UV can transmit the second transmissive area TA2 and the first transmissive area TA1. Accordingly, the UV can reach the adhesive layer 300 in the region where the second transmissive area TA2 is formed.

As a result, in the transparent display device according to the first embodiment of the present invention, UV is transmitted not only in the second transmissive area TA2 but also in the second luminescent area EA2 in which the second white pixel WP2 is disposed . Accordingly, the transparent display device according to the first embodiment of the present invention has a larger area for curing the adhesive layer 300 than the conventional transparent display device in which the adhesive layer 300 is cured only in the second transmissive area TA2 . The transparent display device according to the first embodiment of the present invention can improve the adhesion between the first transparent display panel 100 and the second transparent display panel 200.

Second Example

6 is a cross-sectional view showing a second embodiment of I-I 'shown in FIG.

The transparent display device according to the second embodiment of the present invention shown in FIG. 6 differs from the transparent display device according to the first embodiment of the present invention shown in FIG. 4 in the arrangement of pixels. Hereinafter, differences from the transparent display device according to the first embodiment of the present invention will be mainly described, and redundant description will be omitted.

6, the first transparent display panel 100 includes a first display area DA1, and the first display area DA1 includes a first transmissive area TA1 and a first light emitting area EA1. . The first transmissive area TA1 is an area through which the incident light almost passes. The first light emitting region EA1 is a region for emitting light. The first light emitting area EA1 may include a plurality of first pixels P1. Each of the first pixels P1 may include a first red pixel RP1, a first white pixel WP1, A first green pixel GP1, and a first blue pixel BP1.

As shown in FIG. 6, the first transistor DT1 and the first anode electrode (first electrode) DL1 are connected to the first red pixel RP1, the first white pixel WP1, the first green pixel GP1, and the first blue pixel BP1, And the first black matrix BM1 may be provided on the first organic layer EL1, the first organic layer EL1, the first cathode electrode CAT1, the first color filters RCF1, WCF1, BCF1, and GCF1.

The first transparent display panel 100 according to the second embodiment of the present invention is characterized in that light can be transmitted through a part of the first anode electrode AND1. Specifically, the first anode electrode AND1 of the first white pixel WP1 can transmit light. The first anode electrode AND1 of the first white pixel WP1 may be formed of a transparent conductive material such as ITO or IZO or a transparent conductive material such as magnesium, It may be formed of a semi-transmissive conductive material such as an alloy of magnesium (Mg) and silver (Ag).

In order to cure the adhesive layer 300 in the process of adhesion with the second transparent display panel 200, the first transparent display panel 100 having such a structure is irradiated with UV to be irradiated not only in the first transmissive area TA1, Can also be transmitted through the first light emitting region EA1 in which the white pixel WP1 is disposed.

Accordingly, the transparent display device according to the second embodiment of the present invention has an increased area in which the adhesive layer 300 is cured as compared with the conventional transparent display device in which the adhesive layer 300 is cured only in the first transmissive area TA1 . As a result, the transparent display device according to the second embodiment of the present invention can improve the adhesion between the first transparent display panel 100 and the second transparent display panel 200.

On the other hand, the first anode electrode AND1 of each of the first red pixel RP1, the first green pixel GP1, and the first blue pixel BP1 may reflect light. The first anode electrode AND1 of each of the first red pixel RP1, the first green pixel GP1 and the first blue pixel BP1 is formed of a laminated structure of aluminum and titanium (Ti / Al / Ti) (ITO / Al / ITO), an APC alloy, and a laminated structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

The transparent display device includes a first transparent electrode made of a transparent metal material or a semi-transparent metal material capable of transmitting light, the first anode electrode AND1 of each of the first red pixel RP1, the first green pixel GP1 and the first blue pixel BP1, The effect of improving the adhesive strength is not large, but the luminous efficiency is rather reduced, which is not preferable. For this reason, in the transparent display device according to the second embodiment of the present invention, the first anode electrode (AND1) of each of the first red pixel (RP1), the first green pixel (GP1) and the first blue pixel (BP1) It is possible to improve the luminous efficiency.

The second transparent display panel 200 includes a second display area DA2 and the second display area DA2 includes a second transmissive area TA2 and a second light emitting area EA2. The second transmissive area TA2 is an area through which the incident light is substantially passed and is arranged to correspond to the first transmissive area TA1 of the first transparent display panel 100 as shown in FIG. The second emission region EA2 emits light and is arranged to correspond to the first emission region EA1 of the first transparent display panel 100. [ The second light emitting area EA2 may include a plurality of second pixels P2. Each of the plurality of second pixels P2 includes a second red pixel RP2, a second white pixel WP2, a second green pixel GP2, and a second blue pixel BP1 as shown in FIG. 6 .

As shown in FIG. 6, the second transistor DT2 and the second anode electrode BP2 are respectively connected to the second red pixel RP2, the second white pixel WP2, the second green pixel GP2, and the second blue pixel BP2. A second organic EL layer EL2, a second cathode electrode CAT2, second color filters RCF2, WCF2, BCF2 and GCF2 and a second black matrix BM2.

The second transparent display panel 200 according to the second embodiment of the present invention is characterized in that the second white pixel WP2 is disposed so as not to correspond to the first white pixel WP1 of the first transparent display panel 200 . For example, the second white pixel WP2 of the second transparent display panel 200 is arranged to correspond to the first green pixel GP1 of the first transparent display panel 100 as shown in FIG. 6, The first white pixel WP1 of the display panel 100 may be disposed so as to correspond to the second blue pixel BP2 of the second transparent display panel 200 but is not limited thereto.

In addition, the second transparent display panel 200 according to the second embodiment of the present invention is characterized in that light can be transmitted through a part of the second anode electrode AND2. Specifically, the second anode electrode AND2 of the second white pixel WP2 can transmit light. The second anode electrode AND2 of the second white pixel WP2 may be formed of a transparent conductive material such as ITO or IZO or a transparent conductive material such as magnesium, It may be formed of a semi-transmissive conductive material such as an alloy of magnesium (Mg) and silver (Ag).

The second transparent display panel 200 having such a structure is configured such that the UV to be irradiated for curing the adhesive layer 300 in the process of attaching the first transparent display panel 100 to the first transparent display panel 100 is formed not only in the second transmissive area TA2, Can also be transmitted through the second light emitting area EA2 in which the white pixel WP2 is disposed.

Accordingly, the transparent display device according to the second embodiment of the present invention has a larger area for curing the adhesive layer 300 than the conventional transparent display device in which the adhesive layer 300 is cured only in the second transmissive area TA2 . As a result, the transparent display device according to the second embodiment of the present invention can improve the adhesion between the first transparent display panel 100 and the second transparent display panel 200.

On the other hand, the second anode electrode AND2 of each of the second red pixel RP2, the second green pixel GP2, and the second blue pixel BP2 may reflect light. The second anode electrode AND2 of each of the second red pixel RP2, the second green pixel GP2 and the second blue pixel BP2 includes a laminated structure of aluminum and titanium (Ti / Al / Ti) (ITO / Al / ITO), an APC alloy, and a laminated structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

The transparent display device includes a transparent metal material or a semi-transparent metal material capable of transmitting light, the second anode electrode AND2 of the second red pixel RP2, the second green pixel GP2, and the second blue pixel BP2, The effect of improving the adhesive strength is not large, but the luminous efficiency is rather reduced, which is not preferable. For this reason, in the transparent display device according to the second embodiment of the present invention, the second anode electrode (AND2) of each of the second red pixel (RP2), the second green pixel (GP2) and the second blue pixel (BP2) It is possible to improve the luminous efficiency.

7 is a view showing a region irradiated with UV in a process of attaching a transparent display device according to a second embodiment of the present invention.

Referring to FIG. 7, the transparent display device according to the second embodiment of the present invention includes a first transparent display panel 100, a second transparent display panel 200, and an adhesive layer 300.

The first transparent display panel 100 includes a first transmissive area TA1 and a first light emitting area EA1. The first transparent display panel 100 includes a first red pixel RP1, a first white pixel WP1, a first blue pixel BP1 and a first green pixel GP1 arranged in a first light emitting area EA1. And a first red color filter RCF1 and a second white color filter RCF2 so as to correspond to the first red pixel RP1, the first white pixel WP1, the first blue pixel BP1 and the first green pixel GP1, The filter WCF1, the first blue color filter BCF1, and the first green color filter GCF1 are disposed, respectively.

At this time, the first anode electrode AND1 of the first white pixel WP1 is formed of a transparent metal material or a semitransparent metal material. The first anode electrode AND1 of each of the first red pixel RP1, the first blue pixel BP1 and the first green pixel GP1 is formed of a reflective metallic material.

The second transparent display panel 200 includes a second transmissive area TA2 corresponding to the first transmissive area TA1 of the first transparent display panel 100 and a second transmissive area TA2 corresponding to the first transmissive area TA1 of the first transparent display panel 100. [ And a second emission region EA2 corresponding to the emission region EA1. The second transparent display panel 200 is configured such that the second red pixel RP2, the second white pixel WP2, the second blue pixel BP2 and the second green pixel GP2 are arranged in the second light emitting area EA2 And a second red color filter RCF2 and a second white color filter RF2 are respectively connected to the second red pixel RP2, the second white pixel WP2, the second blue pixel BP2 and the second green pixel GP2, WCF2, a second blue color filter BCF2, and a second green color filter GCF2, respectively. The second white pixel WP2 of the second transparent display panel 200 is arranged not to correspond to the first white pixel WP1 of the first transparent display panel 100. [

At this time, the second anode electrode AND2 of the second white pixel WP2 is formed of a transparent metal material or a semitransparent metal material. The second anode electrode AND2 of each of the second red pixel RP2, the second blue pixel BP2 and the second green pixel GP2 is formed of a reflective metallic material.

The adhesive layer 300 is formed between the first transparent display panel 100 and the second transparent display panel 200.

In the process of attaching the first transparent display panel 100 and the second transparent display panel 200, the UV is transferred from the second transparent display panel 200 to the first transparent display panel 100 In the first direction. 7, the UV may be irradiated in the second direction from the first transparent display panel 100 to the second transparent display panel 200 at the front surface of the transparent display device.

When irradiated in the first direction, UV can not transmit the second red pixel RP2 because the second anode electrode AND2 of the second red pixel RP2 is made of a reflective metallic material. Accordingly, UV does not reach the adhesive layer 300 in the region where the second red pixel RP2 is formed.

When irradiated in the first direction, the UV can transmit the second white pixel WP2 because the second anode electrode AND2 of the second white pixel WP2 is made of a transparent metal material or a semitransparent metal material . Accordingly, UV can reach the adhesive layer 300 in the region where the second white pixel WP2 is formed.

When irradiating in the first direction, UV can not pass through the second blue pixel BP2 because the second anode electrode AND2 of the second blue pixel BP2 is made of a reflective metallic material. Accordingly, UV does not reach the adhesive layer 300 in the region where the second blue pixel BP2 is formed.

When irradiated in the first direction, UV does not pass through the second green pixel GP2 because the second anode electrode AND2 of the second green pixel GP2 is made of a reflective metallic material. Accordingly, the UV does not reach the adhesive layer 300 in the region where the second green pixel GP2 is formed.

When irradiated in the first direction, the UV can transmit the second transmissive area TA2. Accordingly, the UV can reach the adhesive layer 300 in the region where the second transmissive area TA2 is formed.

On the other hand, when irradiating in the second direction, UV can not transmit the first red pixel RP1 because the first anode electrode AND2 of the first red pixel RP1 is made of a reflective metallic material. Accordingly, UV does not reach the adhesive layer 300 in the region where the first red pixel RP1 is formed.

When irradiated in the second direction, the UV can transmit the first white pixel WP1 because the second anode electrode AND1 of the first white pixel WP1 is made of a transparent metal material or a semitransparent metal material . Accordingly, the UV can reach the adhesive layer 300 in the region where the first white pixel WP1 is formed.

When irradiated in the second direction, UV can not pass through the first blue pixel BP1 because the first anode electrode AND1 of the first blue pixel BP1 is made of a reflective metallic material. Accordingly, UV does not reach the adhesive layer 300 in the region where the first blue pixel BP1 is formed.

When irradiating in the second direction, the UV can not transmit the first green pixel GP1 because the first anode electrode AND1 of the first green pixel GP1 is made of a reflective metallic material. Accordingly, the UV does not reach the adhesive layer 300 in the region where the first green pixel GP1 is formed.

When irradiated in the second direction, UV can transmit through the first transmissive area TA1. Accordingly, UV can reach the adhesive layer 300 in the region where the first transmissive area TA1 is formed.

As a result, in the transparent display device according to the second embodiment of the present invention, the UV is applied to the first white pixel WP1 and the second white pixel WP2 as well as the first and second transmissive areas TA1 and TA2, It is possible to transmit the light in the region where the light source is disposed. Accordingly, the transparent display device according to the second embodiment of the present invention has a larger area for curing the adhesive layer 300 than the conventional transparent display device in which the adhesive layer 300 is cured only in the second transmissive area TA2 . The transparent display device according to the second embodiment of the present invention is different from the transparent display device according to the first embodiment in which the first white pixel WP1 and the second white pixel WP2 are arranged to correspond to each other, ) Is increased. The transparent display device according to the second embodiment of the present invention can further improve the adhesion between the first transparent display panel 100 and the second transparent display panel 200.

Third Example

8 is a cross-sectional view showing a third embodiment of I-I 'shown in FIG. FIG. 9A is a view showing an example in which holes are formed in the first and second anode electrodes, and FIG. 9B is a view showing an example in which slits are formed in the first and second anode electrodes.

The transparent display device according to the third embodiment of the present invention shown in FIG. 8 differs from the transparent display device according to the first embodiment of the present invention shown in FIG. 4 in the first anode electrode and the second anode electrode. Hereinafter, differences from the transparent display device according to the first embodiment of the present invention will be mainly described, and redundant description will be omitted.

Referring to FIG. 8, the first transparent display panel 100 includes a first display area DA1, and the first display area DA1 includes a first transmissive area TA1 and a first light emitting area EA1. . The first transmissive area TA1 is an area through which the incident light almost passes. The first light emitting region EA1 is a region for emitting light. The first light emitting area EA1 may include a plurality of first pixels P1. Each of the first pixels P1 may include a first red pixel RP1, a first white pixel WP1, A first green pixel GP1, and a first blue pixel BP1.

As shown in FIG. 8, the first transistor DT1, the first anode electrode G1, and the second anode G2 are connected to the first red pixel RP1, the first white pixel WP1, the first green pixel GP1, and the first blue pixel BP1, And the first black matrix BM1 may be provided on the first organic layer EL1, the first organic layer EL1, the first cathode electrode CAT1, the first color filters RCF1, WCF1, BCF1, and GCF1.

The first transparent display panel 100 according to the third embodiment of the present invention is characterized in that light can be transmitted through a part of the first anode electrode AND1. Specifically, the first anode electrode (AND1) of each of the first red pixel (RP1), the first white pixel (WP1), the first green pixel (GP1), and the first blue pixel (BP1) Holes H may be formed. The light can be transmitted through the hole H formed in the first anode electrode AND1. At this time, the hole H is formed so as not to overlap with the first transistor DT1 which can not transmit light.

The first anode electrode AND1 of each of the first red pixel RP1, the first white pixel WP1, the first green pixel GP1 and the first blue pixel BP1 has a plurality of The slits S can be formed. Light can be transmitted through the slit S formed in the first anode electrode AND1. At this time, the slit S is formed so as not to overlap with the first transistor DT1 which can not transmit light.

The first anode electrode AND1 is made of a laminated structure of aluminum and titanium (Ti / Al / Ti), a laminated structure of aluminum and ITO (ITO / Al / ITO), an APC alloy, APC / ITO). ≪ / RTI > The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

The first transparent display panel 100 according to the third embodiment of the present invention may be configured such that the UV to be irradiated for curing the adhesive layer 300 in the process of adhesion with the second transparent display panel 200 is referred to as a first transmissive area TA1 as well as the first emission region EA1 in which the first anode electrode AND1 is disposed. The first transparent display panel 100 may transmit UV through the holes H or slits S formed in the first anode electrode AND1.

Accordingly, the transparent display device according to the third embodiment of the present invention has an increased area in which the adhesive layer 300 is cured as compared with the conventional transparent display device in which the adhesive layer 300 is cured only in the first transmissive area TA1 . In the transparent display device according to the third embodiment of the present invention, as compared with the transparent display device according to the first embodiment in which UV is transmitted only at the white pixel, the area through which UV is transmitted can be evenly distributed throughout the light emitting area EA have. As a result, the transparent display device according to the third embodiment of the present invention can improve the adhesion between the first transparent display panel 100 and the second transparent display panel 200.

The transparent display device according to the third embodiment of the present invention includes a first red pixel RP1, a first white pixel WP1, a first green pixel GP1, and a first blue pixel BP1, 1 The anode electrode AND1 is formed of a reflective metallic material. Accordingly, the transparent display device according to the third embodiment of the present invention can improve the adhesive force without reducing the luminous efficiency.

The second transparent display panel 200 includes a second display area DA2 and the second display area DA2 includes a second transmissive area TA2 and a second light emitting area EA2. The second transmissive area TA2 is an area through which the incident light is substantially passed and is arranged to correspond to the first transmissive area TA1 of the first transparent display panel 100 as shown in FIG. The second emission region EA2 emits light and is arranged to correspond to the first emission region EA1 of the first transparent display panel 100. [ The second light emitting area EA2 may include a plurality of second pixels P2. Each of the plurality of second pixels P2 includes a second red pixel RP2, a second white pixel WP2, a second green pixel GP2, and a second blue pixel BP1 as shown in FIG. 8 .

As shown in FIG. 8, the second transistor DT2 and the second anode electrode BP2 are respectively connected to the second red pixel RP2, the second white pixel WP2, the second green pixel GP2, and the second blue pixel BP2. A second organic EL layer EL2, a second cathode electrode CAT2, second color filters RCF2, WCF2, BCF2 and GCF2 and a second black matrix BM2.

The second transparent display panel 200 according to the third embodiment of the present invention is characterized in that light can be transmitted through a part of the second anode electrode AND2. Specifically, the second anode electrode AND2 of each of the second red pixel RP2, the second white pixel WP2, the second green pixel GP2, and the second blue pixel BP2 has a plurality of Holes H may be formed. The light can be transmitted through the hole H formed in the second anode electrode AND2. At this time, the hole H is formed so as not to overlap with the first transistor DT1 which can not transmit light.

Further, the second anode electrode AND2 of each of the second red pixel RP2, the second white pixel WP2, the second green pixel GP2, and the second blue pixel BP2 has a plurality of The slits S can be formed. Light can be transmitted through the slit S formed in the second anode electrode AND2. At this time, the slit S is formed so as not to overlap with the first transistor DT1 which can not transmit light.

At this time, the second anode electrode AND2 is formed of a laminated structure of aluminum and titanium (Ti / Al / Ti), a laminated structure of aluminum and ITO (ITO / Al / ITO), an APC alloy, ITO / APC / ITO). ≪ / RTI > The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

In the second transparent display panel 200 according to the third embodiment of the present invention, the UV to be irradiated to cure the adhesive layer 300 in the process of attaching the first transparent display panel 100 to the first transparent display panel 100 is referred to as a second transmissive area TA2 as well as the second emission region EA2 in which the second anode electrode AND2 is disposed. The second transparent display panel 200 may transmit UV through holes H or slits S formed in the second anode electrode AND2.

Accordingly, the transparent display device according to the third embodiment of the present invention has a wider area where the adhesive layer 300 is cured as compared with the conventional transparent display device in which the adhesive layer 300 is cured only in the second transmissive area TA2 . In the transparent display device according to the third embodiment of the present invention, as compared with the transparent display device according to the first embodiment in which UV is transmitted only at the white pixel, the area through which UV is transmitted can be evenly distributed throughout the light emitting area EA have. As a result, the transparent display device according to the third embodiment of the present invention can improve the adhesion between the first transparent display panel 100 and the second transparent display panel 200.

Meanwhile, the transparent display device according to the third embodiment of the present invention includes a first red pixel RP2, a second white pixel WP2, a second green pixel GP2, and a second blue pixel BP2, 2 The anode electrode AND2 is formed of a reflective metallic material. Accordingly, the transparent display device according to the third embodiment of the present invention can improve the adhesive force without reducing the luminous efficiency.

10 is a view showing a region irradiated with UV in a process of attaching a transparent display device according to a third embodiment of the present invention.

Referring to FIG. 10, the transparent display device according to the third embodiment of the present invention includes a first transparent display panel 100, a second transparent display panel 200, and an adhesive layer 300.

The first transparent display panel 100 includes a first transmissive area TA1 and a first light emitting area EA1. The first transparent display panel 100 includes a first red pixel RP1, a first white pixel WP1, a first blue pixel BP1 and a first green pixel GP1 arranged in a first light emitting area EA1. And a first red color filter RCF1 and a second white color filter RCF2 so as to correspond to the first red pixel RP1, the first white pixel WP1, the first blue pixel BP1 and the first green pixel GP1, The filter WCF1, the first blue color filter BCF1, and the first green color filter GCF1 are disposed, respectively.

At this time, the first anode electrode AND1 of each of the first red pixel RP1, the first white pixel WP1, the first blue pixel BP1 and the first green pixel GP1 is formed of a reflective metallic material.

The second transparent display panel 200 includes a second transmissive area TA2 corresponding to the first transmissive area TA1 of the first transparent display panel 100 and a second transmissive area TA2 corresponding to the first transmissive area TA1 of the first transparent display panel 100. [ And a second emission region EA2 corresponding to the emission region EA1. The second transparent display panel 200 is configured such that the second red pixel RP2, the second white pixel WP2, the second blue pixel BP2 and the second green pixel GP2 are arranged in the second light emitting area EA2 And a second red color filter RCF2 and a second white color filter RF2 are respectively connected to the second red pixel RP2, the second white pixel WP2, the second blue pixel BP2 and the second green pixel GP2, WCF2, a second blue color filter BCF2, and a second green color filter GCF2, respectively.

At this time, the second anode electrode AND2 of each of the second red pixel RP2, the second white pixel WP2, the second blue pixel BP2 and the second green pixel GP2 is formed of a reflective metallic material.

The adhesive layer 300 is formed between the first transparent display panel 100 and the second transparent display panel 200.

10, in the process of attaching the first transparent display panel 100 and the second transparent display panel 200, the UV is transferred from the second transparent display panel 200 to the first transparent display panel 100 In the first direction.

The UV can be transmitted through the hole H or the slit S formed in the second anode electrode AND2 of the second red pixel RP2. Accordingly, the UV can reach the adhesive layer 300 in the region where the second red pixel RP2 is formed.

The UV can be transmitted through the hole H or the slit S formed in the second anode electrode AND2 of the second white pixel WP2. Accordingly, UV can reach the adhesive layer 300 in the region where the second white pixel WP2 is formed.

The UV can be transmitted through the hole H or the slit S formed in the second anode electrode AND2 of the second blue pixel BP2. Thus, UV can reach the adhesive layer 300 in the region where the second blue pixel BP2 is formed.

The UV can be transmitted through the hole H or the slit S formed in the second anode electrode AND2 of the second green pixel GP2. Accordingly, the UV can reach the adhesive layer 300 in the region where the second green pixel GP2 is formed.

As a result, in the transparent display device according to the third embodiment of the present invention, the UV is not only transmitted through the second transmissive area TA2 but also the second red pixel RP2, the second white pixel WP2, The second blue pixel GP2, and the second blue pixel BP2. Accordingly, the transparent display device according to the third embodiment of the present invention has a wider area where the adhesive layer 300 is cured as compared with the conventional transparent display device in which the adhesive layer 300 is cured only in the second transmissive area TA2 . The transparent display device according to the third embodiment of the present invention is different from the transparent display device according to the first embodiment in that only the white pixel WP of the light emitting area EA can transmit UV light, The area to be cured is widened. The transparent display device according to the third embodiment of the present invention can further improve the adhesion between the first transparent display panel 100 and the second transparent display panel 200.

Fourth Example

11 is a cross-sectional view showing a fourth embodiment of I-I 'shown in FIG.

The transparent display device according to the fourth embodiment of the present invention shown in FIG. 11 differs from the transparent display device according to the first embodiment of the present invention shown in FIG. 4 in the first anode electrode and the second anode electrode. Hereinafter, differences from the transparent display device according to the first embodiment of the present invention will be mainly described, and redundant description will be omitted.

Referring to FIG. 11, the first transparent display panel 100 includes a first display area DA1, and the first display area DA1 includes a first transmissive area TA1 and a first light emitting area EA1. . The first transmissive area TA1 is an area through which the incident light almost passes. The first light emitting region EA1 is a region for emitting light. The first light emitting area EA1 may include a plurality of first pixels P1. Each of the first pixels P1 may include a first red pixel RP1, a first white pixel WP1, A first green pixel GP1, and a first blue pixel BP1.

11, the first transistor DT1 and the first anode electrode (first transistor) DL1 are connected to the first red pixel RP1, the first white pixel WP1, the first green pixel GP1, and the first blue pixel BP1, And the first black matrix BM1 may be provided on the first organic layer EL1, the first organic layer EL1, the first cathode electrode CAT1, the first color filters RCF1, WCF1, BCF1, and GCF1.

The first transparent display panel 100 according to the fourth embodiment of the present invention is characterized in that light can be transmitted through a part of the first anode electrode AND1. Specifically, the first anode electrode AND1 of the first white pixel WP1 can transmit light. The first anode electrode AND1 of the first white pixel WP1 may be formed of a transparent conductive material such as ITO or IZO or a transparent conductive material such as magnesium, It may be formed of a semi-transmissive conductive material such as an alloy of magnesium (Mg) and silver (Ag).

A hole H or a slit S may be formed in the first anode electrode AND1 of each of the first red pixel RP1, the first green pixel GP1 and the first blue pixel BP1. Light can be transmitted through the hole H or the slit S formed in the first anode electrode AND1. At this time, the hole H or the slit S is formed so as not to overlap the first transistor DT1 which can not transmit light.

The first anode electrode AND1 of each of the first red pixel RP1, the first green pixel GP1 and the first blue pixel BP1 includes a laminated structure of aluminum and titanium (Ti / Al / Ti) (ITO / Al / ITO), an APC alloy, and a laminated structure of ITO (ITO / APC / ITO) and an APC alloy. The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

The first transparent display panel 100 according to the fourth embodiment of the present invention may be configured such that the UV to be irradiated to cure the adhesive layer 300 in the process of adhesion with the second transparent display panel 200 is referred to as a first transmissive area TA1 as well as the first emission region EA1 in which the first anode electrode AND1 is disposed.

Since the first anode electrode AND1 of the first white pixel WP1 is formed of a transparent metal material or a semitransparent metal material in the first transparent display panel 100, the first anode electrode of the first white pixel WP1 AND2). ≪ / RTI >

In the first transparent display panel 100, the first red pixel RP1, the first green pixel GP1, and the first anode electrode AND1 of the first blue pixel BP1 are formed of a reflective metal material Since the hole H or the slit S is formed, UV can be transmitted through the hole H or the slit S.

Accordingly, the transparent display device according to the fourth embodiment of the present invention has a larger area for curing the adhesive layer 300 than the conventional transparent display device in which the adhesive layer 300 is cured only in the first transmissive area TA1 . In the transparent display device according to the fourth embodiment of the present invention, as compared with the transparent display device according to the first embodiment in which UV is transmitted only in a white pixel, the area through which UV is transmitted can be evenly distributed throughout the light emitting area EA have. As a result, the transparent display device according to the fourth embodiment of the present invention can improve the adhesion between the first transparent display panel 100 and the second transparent display panel 200.

Meanwhile, the transparent display device according to the fourth embodiment of the present invention is configured to reflect the first anode electrode (AND1) of each of the first red pixel (RP1), the first green pixel (GP1), and the first blue pixel It is formed of a metal material. Accordingly, the transparent display device according to the fourth embodiment of the present invention can improve the adhesive force without reducing the luminous efficiency.

The second transparent display panel 200 includes a second display area DA2 and the second display area DA2 includes a second transmissive area TA2 and a second light emitting area EA2. The second transmissive area TA2 is an area through which the incident light is substantially transmitted, and is arranged to correspond to the first transmissive area TA1 of the first transparent display panel 100 as shown in FIG. The second emission region EA2 emits light and is arranged to correspond to the first emission region EA1 of the first transparent display panel 100. [ The second light emitting area EA2 may include a plurality of second pixels P2. Each of the plurality of second pixels P2 includes a second red pixel RP2, a second white pixel WP2, a second green pixel GP2, and a second blue pixel BP1 as shown in FIG. 11 .

As shown in FIG. 11, the second transistor DT2 and the second anode electrode BP2 are respectively connected to the second red pixel RP2, the second white pixel WP2, the second green pixel GP2, and the second blue pixel BP2, A second organic EL layer EL2, a second cathode electrode CAT2, second color filters RCF2, WCF2, BCF2 and GCF2 and a second black matrix BM2.

The second transparent display panel 200 according to the fourth embodiment of the present invention is characterized in that light can be transmitted through a part of the second anode electrode AND2. Specifically, the second anode electrode AND2 of the second white pixel WP2 can transmit light. The second anode electrode AND2 of the second white pixel WP2 may be formed of a transparent conductive material such as ITO or IZO or a transparent conductive material such as magnesium, It may be formed of a semi-transmissive conductive material such as an alloy of magnesium (Mg) and silver (Ag).

A hole H or a slit S may be formed in the second anode electrode AND2 of each of the second red pixel RP2, the second green pixel GP2 and the second blue pixel BP2. The light can be transmitted through the hole H or the slit S formed in the second anode electrode AND2. At this time, the hole H or the slit S is formed so as not to overlap the first transistor DT1 which can not transmit light.

The second anode electrode AND2 of each of the second red pixel RP2, the second green pixel GP2 and the second blue pixel BP2 includes a laminated structure of aluminum and titanium (Ti / Al / Ti) (ITO / Al / ITO), an APC alloy, and a laminated structure of ITO (ITO / APC / ITO) and an APC alloy. The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

In the second transparent display panel 200 according to the fourth embodiment of the present invention, UV to be irradiated to cure the adhesive layer 300 in the process of attaching the first transparent display panel 100 to the first transparent display panel 100 is referred to as a second transmissive area TA2 as well as the second emission region EA2 in which the second anode electrode AND2 is disposed.

Since the second anode electrode AND2 of the second white pixel WP2 is formed of a transparent metal material or a semitransparent metal material in the second transparent display panel 200, the second anode electrode of the second white pixel WP2 AND2). ≪ / RTI >

In the second transparent display panel 200, the second red pixel RP2, the second green pixel GP2, and the second anode electrode AND2 of the second blue pixel BP2 are formed of a reflective metallic material Since the hole H or the slit S is formed, UV can be transmitted through the hole H or the slit S.

Accordingly, in the transparent display device according to the fourth embodiment of the present invention, compared with the conventional transparent display device in which the adhesive layer 300 is cured only in the second transmissive area TA2, the area where the adhesive layer 300 is cured is widened . In the transparent display device according to the fourth embodiment of the present invention, as compared with the transparent display device according to the first embodiment in which UV is transmitted only in a white pixel, the area through which UV is transmitted can be evenly distributed throughout the light emitting area EA have. As a result, the transparent display device according to the fourth embodiment of the present invention can improve the adhesion between the first transparent display panel 100 and the second transparent display panel 200.

Meanwhile, the transparent display device according to the fourth embodiment of the present invention includes a first red pixel RP2, a second white pixel WP2, a second green pixel GP2, and a second blue pixel BP2, 2 The anode electrode AND2 is formed of a reflective metallic material. Accordingly, the transparent display device according to the fourth embodiment of the present invention can improve the adhesive force without reducing the luminous efficiency.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, it is to be understood that the present invention is not limited to those embodiments and various changes and modifications may be made without departing from the scope of the present invention. . Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of protection of the present invention should be construed according to the claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

100: first transparent display panel 111: first lower substrate
112: first upper substrate 120: first gate driver
130: first source drive IC 140: first flexible film
150: first display circuit board 160: first timing control section
200: second transparent display panel 211: second lower substrate
212: second upper substrate 220: second gate driver
230: second source drive IC 240: second flexible film
250: second display circuit board 260: second timing control unit
300: adhesive layer DA1: first display area
EA1: first luminescent area TA1: first transmission area
DT1: first transistor AND1: first anode electrode
EL1: first organic layer CAT1: first cathode electrode
DA2: second display area EA2: second light emitting area
TA2: second transmission region DT2: second transistor
AND2: Second anode electrode EL2: Second organic layer
CAT2: Second cathode electrode

Claims (12)

A first transparent display panel including a first light emitting region and a first transparent region;
A second transparent display panel including a second light emitting region and a second light emitting region; And
And an adhesive layer disposed between the first transparent display panel and the second transparent display panel,
Wherein light is transmitted through at least a part of at least one of the first light emitting region and the second light emitting region. The method according to claim 1,
Wherein the first light emitting region includes a first pixel including a first anode electrode, a first light emitting layer, and a first cathode electrode,
Wherein the second light emitting region includes a second pixel including a second anode electrode, a second light emitting layer, and a second cathode electrode,
Wherein at least a part of at least one of the first anode electrode and the second anode electrode transmits light. 3. The method of claim 2,
Wherein each of the first pixel and the second pixel includes a plurality of sub-pixels,
Wherein at least one of the plurality of sub-pixels of the first pixel and at least one of the plurality of sub-pixels of the second pixel are formed of a transparent metal material or a semi- . The method of claim 3,
Wherein the first pixel includes a first red pixel, a first white pixel, a first blue pixel, and a first green pixel, the second pixel includes a second red pixel, a second white pixel, a second blue pixel, Green pixels,
Wherein the first anode electrode of the first white pixel and the second anode electrode of the second white pixel are formed of a transparent metal material or a semitransparent metal material. 5. The method of claim 4,
And the second white pixel corresponds to any one of the first red pixel, the first blue pixel, and the first green pixel. 5. The method of claim 4,
Wherein the first anode electrode of each of the first red pixel, the first blue pixel, and the first green pixel and the second anode electrode of each of the second red pixel, the second blue pixel, Wherein the display device is formed of a metal material. The method according to claim 6,
Wherein at least one of the first anode electrode formed of the reflective metal material and the second anode electrode formed of the reflective metal material is formed as a hole or a slit. 3. The method of claim 2,
Wherein the first light emitting layer and the second light emitting layer are white light emitting layers. 9. The method of claim 8,
The first pixel further comprises a first black matrix disposed on the first cathode electrode and a first color filter disposed in an area defined by the first black matrix,
Wherein the first pixel further comprises a second black matrix disposed on the second cathode electrode and a second color filter disposed in an area defined by the second black matrix 3. The method of claim 2,
Wherein each of the first pixel and the second pixel includes a plurality of sub-pixels,
Wherein at least one first anode electrode of the plurality of sub-pixels of the first pixel and at least one second anode electrode of the plurality of sub-pixels of the second pixel are formed of a reflective metallic material. . 11. The method of claim 10,
Wherein at least one of the first anode electrode formed of the reflective metal material and the second anode electrode formed of the reflective metal material is formed as a hole or a slit. 12. The method of claim 11,
Wherein the first pixel further comprises a first transistor, the second pixel further comprises a second transistor,
Wherein the hole or the slit does not overlap the first transistor and the second transistor.

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