KR101329757B1 - Transparent oled lighting device - Google Patents

Abstract

The present invention relates to a transparent OLED lighting apparatus, and in particular, to provide a transparent OLED lighting apparatus for adjusting the irradiation direction of light by including an opaque reflective metal in the transparent OLED lighting apparatus.
To this end, the transparent OLED lighting apparatus of the present invention comprises a transparent substrate; A transparent anode formed in a predetermined region on the transparent substrate; A reflective anode formed adjacent to the transparent anode in a predetermined region on the transparent substrate; An organic layer formed on the transparent anode and the reflective anode; And a transparent cathode and an encapsulation substrate sequentially formed on the organic layer, wherein the irradiation direction of the light emitted from the organic layer is varied depending on the presence or absence of power applied to the transparent anode and the reflective anode.

Description

Transparent OLED lighting device {TRANSPARENT OLED LIGHTING DEVICE}

The present invention relates to a transparent OLED lighting apparatus, and more particularly to a transparent OLED lighting apparatus for adjusting the direction of irradiation of light by forming an opaque reflective metal in the transparent OLED lighting apparatus.

Recently, the display industry is pursuing small size, light weight and thin film using thin film, and demanding high resolution. In line with these demands, research on display devices, which used LCD or organic electroluminescent properties using glass substrates, is attempting to realize miniaturization and thinning using plastic or metal thin films as substrates. To this end, the organic light emitting device technology is attracting attention as the most realistic among the existing device fabrication technology.

In addition, an illumination device using an organic light emitting diode (OLED) can be classified into an upper emission type, a lower emission type, and a bidirectional transparent type according to the light emission direction.

However, the top emitting type or the bottom emitting type OLED lighting device is not transparent and thus cannot be used as window type lighting, and a bidirectional or transparent light source in which both the positive electrode and the negative electrode are made of transparent electrodes is used.

However, in the case of a transparent OLED lighting device capable of two-way lighting, there is a problem in that control of the irradiation direction is impossible when the user wants to illuminate only one direction according to the purpose, and when the object on the opposite side of the lighting needs to be recognized When the lighting is turned on, there is a problem in that the object of the opposite side cannot be recognized due to the light of the lighting.

Recently, various types of light emitting devices having at least two light emitting elements such as organic light emitting diodes (OLEDs) have been developed, and double-sided light emitting devices for enabling light output from both sides have been formed.

However, the two-sided light emitting devices as described above can only control the color and the irradiation amount of the light emitted, there is a problem that the irradiation direction emitted from the double-sided light emitting device can not be adjusted.

The present invention has been proposed to solve the above problems, and an object thereof is to provide a transparent OLED lighting apparatus for controlling a light irradiation direction.

In order to achieve the above object, the present invention provides a transparent OLED lighting apparatus comprising: a transparent substrate; A transparent anode formed in one region on the transparent substrate; A reflective anode formed adjacent to the transparent anode in another region on the transparent substrate; An organic layer formed on the transparent anode and the reflective anode; And a transparent cathode and an encapsulation substrate sequentially formed on the organic layer, wherein the direction of irradiation of light emitted from the organic layer is controlled according to the presence or absence of power applied to the transparent anode and the reflective anode.

In addition, the present invention also transparent OLED lighting apparatus according to another feature of the present invention is a transparent substrate; A transparent anode formed on the transparent substrate; An organic layer formed on the transparent anode; A transparent cathode and an encapsulation substrate sequentially formed on the organic layer; It includes a reflective metal formed in one region of the upper or lower portion of the sealing substrate, characterized in that the light emitted from the organic layer is reflected in the region where the reflective metal is formed.

Transparent OLED lighting apparatus according to the present invention has the advantage that can be utilized in one-way or two-way lighting depending on the purpose by adjusting the irradiation direction of light irradiated in an undesired direction.

In addition, there is an advantage in that the object on the other side can be recognized even when the lighting is turned on, and by combining the solar cell on the back of the reflective metal composed of an opaque region, the power can be stored and used to save energy.

1 is a cross-sectional view of a transparent OLED lighting apparatus according to a first embodiment of the present invention;
2 is a view showing an electrode arrangement of the transparent OLED lighting apparatus according to the first embodiment of the present invention;
3A is a view illustrating a solar cell and a storage battery attached to a transparent OLED lighting apparatus according to a first embodiment of the present invention;
3B is a view showing a form in which a sensor is attached to the transparent OLED lighting apparatus according to the first embodiment of the present invention;
4A to 4C are diagrams for showing an irradiation direction of a transparent OLED lighting apparatus according to a first embodiment of the present invention;
5A and 5B are cross-sectional views of a transparent OLED lighting apparatus according to a second embodiment of the present invention;
6A is a view showing a solar cell attached to a transparent OLED lighting apparatus according to a second embodiment of the present invention;
6B is a view showing a form in which a sensor is attached to a transparent OLED lighting apparatus according to a second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that the same elements among the drawings are denoted by the same reference numerals whenever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

1 is a cross-sectional view of a transparent OLED lighting apparatus according to a first embodiment of the present invention.

Referring to FIG. 1, a transparent OLED lighting apparatus according to a first exemplary embodiment of the present invention includes a transparent substrate 101, a transparent anode 102 formed in a predetermined region on a transparent substrate 101, and a predetermined shape on a transparent substrate 101. Transparent stacked on the organic layer 104 and the organic layer 104, which is a light emitting layer formed on the reflective anode 103, the transparent anode 102 and the reflective anode 103 formed adjacent to the transparent anode 102 in the region The cathode 105 and the sealing substrate 106 are included.

A manufacturing process of a transparent OLED lighting apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

2 is a view showing the electrode arrangement of the transparent OLED lighting apparatus according to the first embodiment of the present invention.

In the transparent OLED lighting apparatus according to the first embodiment of the present invention, the transparent anode 102 is formed on the transparent substrate 101, one region of the transparent anode 102 is etched, and the reflective anode 103 is etched in the etched region. E). Here, the transparent substrate 101 may be made of glass or plastic, and the transparent anode 102 may be made of a transparent and high work function conductive material, for example, ITO, IZO, or the like. In addition, the reflective anode 103 is preferably formed of opaque silver (Ag) or aluminum (Al).

When the transparent anode 102 and the reflective anode 103 are formed in a cross-array form on the transparent substrate 101 through the etching process of the transparent anode 102 and the deposition process of the reflective anode 103, the transparent array is arranged crosswise. An organic layer 104 is formed on the anode 102 and the reflective anode 103, which is an organic light emitting layer having three wavelengths of white light emission. Meanwhile, in the exemplary embodiment of the present invention, the transparent anode 102 and the reflective anode 103 have been formed by being cross-arrayed at a ratio of 50:50, but the ratio of the transparent anode 102 and the reflective anode 103 is 20: 80, 30: 70 may be changed in a specific ratio, as long as the reflective anode 103 is formed in the middle of the transparent anode 102 can be modified as much as possible. In addition, in the embodiment of the present invention, the light emitting layer is represented only by the organic layer 104, but in order to further activate the injection of holes, a hole injection layer (not shown), a hole transport layer (not shown), a light emitting layer (not shown), an electron transport layer And / or an electron injection layer (not shown) may be formed in turn.

As described above, when the organic layer 104 is formed on the transparent anode 102 and the reflective anode 103, the transparent cathode 105 and the encapsulation substrate 106 are sequentially stacked on the organic layer 104, and an OLED lighting apparatus. To complete. In this case, the encapsulation substrate 106 may be made of glass or plastic, and the transparent cathode 105 may be made of a transparent material having a high work function, for example, ITO or IZO. In addition, in the exemplary embodiment of the present invention, the transparent anode 102 is formed on the entire upper surface of the transparent substrate 101, and then the reflective anode 103 is deposited by etching one region, which is the transparent anode 102 and the reflective anode. If the 103 is formed to intersect, the reflective anode 103 may be formed on the entire upper surface of the transparent substrate 101, and then the transparent anode 102 may be deposited by an etching process of one region.

On the other hand, when the transparent OLED lighting apparatus is formed through the above process, the transparent anode 102 and the reflective anode 103 formed on the transparent substrate 101 have different paths 201 and 202, respectively, as shown in FIG. The power supply is configured to be delivered independently. Therefore, by controlling the flow of power transmitted to the transparent anode 102 and the reflective anode 103, respectively, the irradiation direction can be adjusted so that light is irradiated or partially irradiated in both directions of the transparent OLED lighting apparatus.

3A is a diagram illustrating a solar cell and a storage battery attached to a transparent OLED lighting apparatus according to a first embodiment of the present invention.

Referring to FIG. 3A, a transparent OLED lighting apparatus having a solar cell and a storage battery according to a first embodiment of the present invention includes a transparent anode 102 and a reflective anode 103 formed in a cross-array form on the transparent substrate 101. ), An organic layer 104 formed on the transparent anode 102 and a reflective anode 103 formed in a cross-array form, a transparent cathode 105 and an encapsulation substrate 106 sequentially stacked on the organic layer 104. ).

In addition, the solar cell 108 is formed in the lower region of the transparent substrate 101 which is symmetrical with the reflective anode 103 formed on the transparent substrate 101, and the lower portion of the transparent substrate 101 on which the solar cell 108 is not formed is formed. It includes a storage battery 109 formed in one region.

In this case, the solar cell 108 may be a silicon semiconductor-based solar cell, CIGS-based solar cell and organic material-based solar cell, and the like, and the storage battery 109 configured in one region of the transparent OLED lighting device is the solar cell 108. It is possible to accumulate power generated by. In the embodiment of the present invention, the storage battery 109 is described as being formed under the transparent substrate 101. However, this may be any area within the transparent OLED lighting device as long as it can store power generated through the solar cell 108. It can be attached.

3B is a view illustrating a form in which a sensor is attached to the transparent OLED lighting apparatus according to the first embodiment of the present invention.

Referring to FIG. 3B, the transparent OLED lighting apparatus with the sensor according to the first embodiment of the present invention includes a transparent anode 102 and a reflective anode 103 formed in a cross-arrayed form on the transparent substrate 101. And an organic layer 104 formed on the transparent anode 102 and a reflective anode 103 formed in a cross-arranged form, a transparent cathode 105 sequentially stacked on the organic layer 104, and an encapsulation substrate 106. do. In addition, the sensor 111 is formed in a region below the transparent substrate 101 which is symmetrical with the reflective anode 103 formed on the transparent substrate 101.

As such, when the sensor 111 is attached to the transparent OLED lighting apparatus, the opposite object may be recognized even when the lighting is turned on. In addition, by combining the sensor 111 on the rear surface of the reflective metal consisting of an opaque region it can be detected in the change of the surrounding environment and can be used to change the lighting drive accordingly.

In this case, the sensor 111 may be a silicon semiconductor-based sensor, an organic material-based sensor, or the like.

4A to 4C are diagrams for showing an irradiation direction of a transparent OLED lighting apparatus according to a first embodiment of the present invention.

To this end, the transparent OLED lighting apparatus according to the first embodiment of the present invention controls the power applied to the transparent anode 102, the reflective anode 103 and the transparent cathode 105, as shown in the arrow direction in FIG. Likewise, the irradiation direction of the transparent OLED lighting device is controlled.

FIG. 4A illustrates a direction in which light is irradiated from the transparent OLED lighting apparatus when power is applied to the transparent anode 102, the reflective anode 103, and the transparent cathode 105. As described above, when power is applied to the transparent anode 102 and the reflective anode 103, and power is applied to the transparent cathode 105, holes are formed in the organic layer 104 in the transparent anode 102 and the reflective anode 103. ), And electrons move to the organic layer 104 in the transparent cathode 105. The organic layer 104 then combines the moved holes and electrons to emit light, and the light emitted from the organic layer 104 is irradiated to both sides of the transparent OLED lighting apparatus through the transparent anode 102 and the transparent cathode 105. . At this time, the light irradiated to the region where the reflective anode 103 is formed is reflected by the reflective anode 103 so that the light is reflected in the direction in which the transparent cathode 105 is formed. Therefore, as shown in FIG. 4A, when power is applied to the transparent anode 102, the reflective anode 103, and the transparent cathode 105 of the transparent OLED lighting device, one region and an encapsulation of the bottom surface of the transparent substrate 101 are applied. Light is irradiated to the entire upper surface of the substrate 106. Therefore, by forming the reflective anode 103 to be cross-arranged with the transparent anode 102, it is possible to control the irradiation direction of the light emitted only on both sides of the transparent OLED lighting device.

4B is a diagram illustrating a direction in which light is radiated from the transparent OLED lighting apparatus when power is applied to the transparent anode 102 and the transparent cathode 105.

In this regard, when power is applied to the transparent anode 102 and the transparent cathode 105, holes move to the organic layer 104 through the region where the transparent anode 102 is formed, and the region where the transparent cathode 105 is formed. The electrons move to the organic layer 104 through the electrons. Afterwards, light emitted by the combination of electrons and holes in the organic layer 104 is irradiated to both sides in a region where the transparent anode 102 is formed. In this case, the reflective anode 103 may perform a mirror function because no power is applied, and the user may recognize an object even in a state where light is irradiated.

4C is a diagram illustrating a direction in which light is radiated from the transparent OLED lighting apparatus when power is applied to the reflective anode 103 and the transparent cathode 105.

In this regard, when power is applied to the reflective anode 103 and the transparent cathode 105, light is transferred from the organic layer 104 corresponding to a region where the electrons and holes are moved to the organic layer 104 to form the reflective anode 103. Emit light. At this time, the light emitted from both sides through the organic layer 104 is reflected by the reflective anode 103, the light is irradiated only to one surface corresponding to the upper surface of the reflective anode 103. In this case, the user may recognize an object located on the opposite side of the transparent OLED lighting device through the transparent anode 102 which is not powered.

5A and 5B are cross-sectional views of a transparent OLED lighting apparatus according to a second embodiment of the present invention.

5A and 5B, the transparent OLED lighting apparatus according to the second embodiment of the present invention includes a transparent substrate 101, a transparent anode 102, an organic layer 104, a transparent cathode 105, and an encapsulation substrate 106. ) And the reflective metal 110.

A manufacturing process of the transparent OLED lighting apparatus according to the second embodiment of the present invention illustrated in FIGS. 5A and 5B will be described.

First, a transparent anode 102 for applying power to the transparent substrate 101 is formed, and an organic layer 104 as a light emitting layer is formed on the transparent anode 102.

When the transparent cathode 102 and the organic layer 104 are sequentially stacked on the transparent substrate 101 as described above, the transparent cathode 105 and the encapsulation substrate 106 are sequentially stacked on the organic layer 104. Here, the transparent substrate 101 and the sealing substrate 106 are preferably glass or plastic.

At this time, the transparent OLED lighting apparatus according to the second embodiment of the present invention, as shown in Figs. 5 (a) and 5 (b), silver (Ag) or aluminum ( It further forms a reflective metal 110, which may be formed of Al).

Accordingly, in the transparent OLED lighting apparatus according to the second embodiment of the present invention, the reflective metal 110 is formed in one region of the top or bottom surface of the encapsulation substrate 106, thereby as shown in FIGS. 5A and 5B. As shown in the direction of the arrow, the light may be controlled only to a portion of the lower front surface of the transparent substrate 101 and the upper surface of the encapsulation substrate 106.

6A is a diagram illustrating a solar cell attached to a transparent OLED lighting apparatus according to a second embodiment of the present invention.

Referring to FIG. 6A, an OLED lighting apparatus having a solar cell according to a second embodiment of the present invention includes a transparent substrate 101, a transparent anode 102, an organic layer 104, a transparent cathode 105, and an encapsulation substrate ( 106 and solar cell 108.

In this case, the solar cell 108 is preferably formed on the encapsulation substrate 106, and preferably formed in an area symmetrical with the reflective metal 110 formed under the encapsulation substrate 106.

6B is a diagram illustrating a sensor attached to a transparent OLED lighting apparatus according to a second embodiment of the present invention.

Referring to FIG. 6B, an OLED lighting apparatus having a sensor according to a second embodiment of the present invention may include a transparent substrate 101, a transparent anode 102, an organic layer 104, a transparent cathode 105, and an encapsulation substrate 106. ) And a sensor 111.

In this case, the sensor 111 is preferably formed above the encapsulation substrate 106, and preferably formed in an area symmetrical with the reflective metal 110 formed under the encapsulation substrate 106.

The transparent OLED lighting apparatus according to the second embodiment of the present invention formed through the above process irradiates the light generated from the organic layer 104 to both surfaces through the transparent anode 102 and the transparent cathode 105. However, light emitted to the upper surface of the transparent OLED lighting apparatus is not irradiated to the front surface of the upper portion of the encapsulation substrate 106 by the reflective metal 110 formed in a portion of the upper surface or the lower surface of the encapsulation substrate 106. Light is irradiated only to a part of the region of the sealing substrate 106 in the direction of the arrow shown in a) and FIG. 5B.

As described above, by depositing reflective metals 103 and 110, which are opaque metals, on one region of the transparent anode 102 or the encapsulation substrate 106, the irradiation direction of light irradiated from the transparent OLED lighting apparatus may be adjusted.

Although the present invention has been described with reference to specific embodiments, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited by the described embodiments but should be determined by the equivalents of the claims and the claims.

101: transparent substrate 102: transparent anode
103: reflective anode 104: organic layer
105: transparent cathode 106: encapsulation substrate
108: solar cell 109: storage battery
110: reflective metal 111: sensor

Claims (20)

A transparent substrate;
A transparent anode formed in one region on the transparent substrate;
A reflective anode formed adjacent to the transparent anode in another region on the transparent substrate;
An organic layer formed on the transparent anode and the reflective anode;
A transparent cathode and an encapsulation substrate sequentially formed on the organic layer; And
And a sensor that is symmetrically bonded to the reflective anode on one surface of the transparent substrate facing the reflective anode, and detects a change in the surrounding environment for changing the lighting drive.
Each of the transparent anode and the reflective anode is independently supplied with power through different lines so that the irradiation direction of light emitted from the organic layer is controlled on both sides or one surface according to the presence or absence of power applied to the transparent anode and the reflective anode. Transparent OLED lighting device, characterized in that.
The method according to claim 1,
Transparent OLED lighting device further comprises a solar cell formed in one region of the lower portion of the transparent substrate.
The method of claim 2, wherein the solar cell,
Transparent OLED lighting device, characterized in that formed in the region symmetrical with the reflective anode formed on the transparent substrate.
delete delete The transparent OLED lighting apparatus of claim 1, wherein the transparent anode formed on the transparent substrate and the reflective anode are formed in a crossing pattern according to a specific ratio.
delete The method according to claim 1,
When power is applied to the transparent anode,
And a light is irradiated to one region of the lower surface of the transparent substrate and one region of the upper surface of the encapsulation substrate, which are symmetrical to the region where the transparent anode is formed.
The method according to claim 1,
When power is applied to the reflective anode,
Transparent OLED lighting device, characterized in that the light is irradiated to a region of the upper surface of the sealing substrate symmetrical to the region where the reflective anode is formed.
The method according to claim 1,
When power is applied to the transparent anode and the reflective anode,
Transparent OLED lighting device, characterized in that the light is irradiated to one area of the lower surface of the transparent substrate symmetrical to the area where the transparent anode is formed and the upper front surface of the sealing substrate.
The method of claim 1, wherein the transparent substrate and the encapsulation substrate,
Transparent OLED lighting device, characterized in that the glass or plastic.
The method of claim 1, wherein the reflective anode,
Transparent OLED lighting device, characterized in that the silver (Ag) or aluminum (Al).
delete delete delete delete delete delete delete delete

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