KR20150126574A - Transparent display apparatus - Google Patents

Abstract

In a watch type portable terminal including a watch part to provide time information, the watch type portable terminal includes an electro chromic layer which is transparent or opaque, and a display device which is displayed with a phone mode background when the electro chromic layer is opaque, receives a phone call provided with the phone mode background, and includes a display layer which provides the time information through the transparency of the electro chromic layer. Thereby, a background screen is selectively transmitted or blocked according to the use of a product.

Description

TRANSPARENT DISPLAY APPARATUS

The present invention relates to a transparent display device configured to selectively transmit or emit light of an image according to the supply of power to a conventional transparent organic light emitting diode.

Typically, an organic light emitting display device includes an OLED (Organic Light Emitting Diode) stacked on a TFT (Thin Film Transistor) layer forming an electric circuit, And the light emitting layer of the organic light emitting diode selectively emits light.

The organic light emitting display device is divided into a display device of an organic light emitting diode on an opaque substrate and a transparent organic light emitting diode (OLED) display device on a transparent substrate.

Hereinafter, the structure of the transparent organic light emitting diode display device will be described.

And a TFT layer provided with a substrate, a gate electrode, a source region, a drain region, a via hole, etc. (not shown)

1 and 2, the transparent organic light emitting diode (TOLED) 1 includes a transparent anode 3 and a hole transport layer (not shown) on a glass substrate 2 of the TFT layer, A hole transport layer 4, an emitter layer 5, an electron transport layer 6 and a transparent cathode 7.

Accordingly, a voltage is applied to the gate electrode, a channel is opened in the organic semiconductor region, a current flows from the source region to the drain region, and then, through the via hole, the transparent anode 3 of the transparent organic light emitting diode 1 A hole transport layer 4, an emmitting layer 5, an electron transport layer 6 and a transparent cathode 7 to allow a current to flow therethrough do. At this time, in the emissive layer 5, the action of the electrification, that is, the hole and the electron, is excited and excited, causing a luminescence function of emitting energy in the form of light. This light is, for example, a light emitting point corresponding to one pixel of the display panel.

As shown in FIGS. 1 and 2, there is an upward light emission type in which light is emitted in a direction opposite to that of a downward light emission type that is emitted toward a substrate with respect to a direction in which light is emitted. In recent years, Type is the preferred trend. That is, in the case of the downward light emission type, light can be emitted only to the extent corresponding to the area of the electrode of the gauge, but in the upward light emission type, light can be emitted to a wider region between the blades (not shown) The cathode must be transparent. That is, conventionally, a cathode is formed by using a structure in which indium-tin oxide (ITO) and silver (Ag) are stacked one upon the other.

It is made by laminating metal phosphorus thinly and laminating transparent ITO on it with a proper thickness. It is a mixture of conductivity of metal and light transmittance characteristic of ITO. Here, the thickness of silver is usually about 5 nm, and the thickness of transparent ITO is about 50 to 200 nm.

Basically, it is necessary to have the property of transmitting light well, and at the same time, the conductivity should be maintained at an appropriate level so that the power consumption is not increased too much.

However, although the conventional transparent organic light emitting diode may be advantageous in that it is seen at the same time on the back side, there is a problem that the visibility is lowered or the background is obstructed depending on the case.

Also, when the conventional transparent organic light emitting diode is applied to a watch type portable terminal, the time for the phone mode should always be displayed even when a call is not made in a watch type portable terminal. However, when the display for the phone mode is made to look like a clock, the screen must be continuously turned on, which consumes a lot of power, and there is a disadvantage that it can not be luxuriously decorated with jewelry,

The transparent organic light emitting diode according to the present invention may be configured to selectively transmit or emit light of an image according to the supply of power to the transparent organic light emitting diode, Device.

According to the present invention, it is possible to selectively transmit or emit light of an image according to the supply of power to a conventional transparent organic light emitting diode, thereby making it possible to manufacture an overlay display of the product, And a rear display unit, which can recognize the front display of the conventional transparent organic light emitting diode, thereby improving the use of the product.

According to the present invention, there is provided a transparent display device capable of reducing the power consumption and the manufacturing cost by eliminating the need for a pattern formation process in a pixel unit, because transmission and transmission can be controlled depending on the power supply.

The present invention provides a transparent OLED capable of selectively transmitting or diffusing light of an image according to the supply of power to a conventional transparent organic light emitting diode, A manufacturing cost can be reduced, and a time required for assembling can be shortened.

INDUSTRIAL APPLICABILITY By applying a transparent display device and a transmission type LCD that selectively transmit or emit light of an image according to the supply of power to a watch type phone, it is possible to display a clock without power supply, And a transparent display device capable of utilizing a luxurious image of the display device.

The present invention provides a transparent display device including a glass substrate, a transparent anode, a hole transport layer, a light emitting layer, an electron transport layer, and a transparent organic light emitting diode composed of a transparent cathode, ; First and second transparent ITO layers which are laminated on the insulator to transmit electromotive force to the entire surface and transmit or emit light of an image according to on / off of the power source; A transparent coloring material provided between the transparent ITO and the transparent ITO. The coloring material is oxidized and reduced according to the on / off state of the power source, layer; And a substrate provided on the second transparent ITO in a laminated manner.

In the present invention, the electrochromic layer may include a colorless transparent chemical material in the form of a gel (GEL), and a sealing device for sealing the gel.

In the present invention, when the power source (0.4 to 1.6 Vdc) is turned on, the electrochromic layer is oxidized and reduced by two chemical substances, respectively, to form a black color, thereby blocking the background image light, When the power is turned off, a transparent color is formed to absorb and transmit the light of the background image, and the rear secondary screen can be displayed.

In the present invention, when the electrochromic layer is applied to a watch type phone, the front primary screen may be a phone mode background and the rear secondary screen may be a clock background.

In the present invention, the electrochromic layer can adjust transmittance using the power of the power source.

The present invention provides a transparent display device including a glass substrate, a transparent anode, a hole transport layer, a light emitting layer, an electron transport layer, and a transparent organic light emitting diode composed of a transparent cathode, ; First and second transparent ITO layers which are laminated on the insulator to transmit electromotive force to the entire surface and transmit or emit light of an image according to on / off of the power source; First and second polarizers provided between the first and second transparent ITO; And a transmissive LCD provided between the one or two light emitters to transmit or emit light of an image according to on / off of the power source, wherein when the transmissive LCD is powered on, the transmissive LCD And the front primary screen is displayed. When the power is turned off, the transmissive LCD is kept transparent so as to transmit the light of the background image. In addition, A screen can be displayed.

The present invention relates to a transparent display device, comprising: a substrate; First and second transparent ITO layers laminated on the substrate to transmit an electromotive force to the entire surface of the electrochromic layer; An electrochromic layer disposed between the first and second transparent ITO layers and controlling a light transmittance according to application of power;

An insulator laminated on the second transparent ITO; And a transparent organic light emitting diode laminated on the insulator.

In the present invention, the electrochromic layer can absorb or block light by forming a color according to application of power.

The present invention provides a watch-type portable terminal having a clock unit capable of providing time information, comprising: an electrochromic layer formed in a transparent or opaque state; And a display layer that is displayed on the phone mode background when the electrochromic layer is opaque and a phone call is provided on the phone mode background and the electrochromic layer is capable of providing time information through transparency, . ≪ / RTI >

In the present invention, the display device may be stacked on top of the electrochromic layer.

As described above, according to the transparent display device of the present invention,

It is possible to selectively transmit or block the light of the image according to the supply of power to the conventional transparent organic light emitting diode so that the background screen can be selectively transmitted or blocked according to the use of the product, Overlaid Display) can be manufactured and it is possible to display the front and back according to the power supply. Therefore, it is possible to recognize the front display of the conventional transparent organic light emitting diode so as to improve the use of the product, It is possible to control the transmittance and transmittance according to the intensity, thereby reducing the power consumption, and it is possible to reduce the manufacturing cost by eliminating the pattern formation process of the pixel unit. Also, according to the power supply, Type transmissive LCD that transmits light, The manufacturing cost can be reduced and the assembly process time can be shortened. By applying the transparent display device and the transmissive LCD to the watch type phone, the power supply It is possible to reduce the power consumption of the product and utilize the luxurious image of the clock.

1 is a sectional view showing a structure of a conventional transparent display device.
2 is a cross-sectional view showing an operation state of a conventional transparent display device.
3 is a cross-sectional view showing a configuration of a transparent display device according to a first embodiment of the present invention;
4 is a cross-sectional view illustrating a configuration of a transparent display device according to a second embodiment of the present invention.
5 is a view illustrating a state in which a front primary screen is displayed during operation of the transparent display device according to the first and second embodiments of the present invention.
FIG. 6 is a view illustrating a state in which a rear secondary screen of an operation state of the transparent display device according to the first and second embodiments of the present invention is displayed; FIG.

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

It should be noted that the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, It should be understood that there are many variations.

3, the transparent display device 10 includes a glass substrate 2, a transparent anode 3, a hole transport layer 4, a hole transport layer 4, A transparent organic light emitting diode 1 including an emitter layer 5, an electron transport layer 6 and a transparent cathode 7, an insulator 11, A first and a second transparent ITO layers 12 and 13 and an electrochromic layer 14 and a glass substrate 15 as shown in FIG.

3, the insulator 11 is laminated on the transparent cathode 7 so as to maintain electrical insulation between the electrode of the electrochromic layer 14 and the electrode of the transparent organic light emitting diode 1, The first and second transparent ITOs 12 and 13 transmit the electromotive force to the entire surface and transmit the light of the image in accordance with the power ON / The electrochromic layer 14 is formed of a colorless transparent chemical material in the form of a gel, and when the power is turned on / off, (12) (13) for absorbing or blocking light of an image, and the substrate (15) is provided between the first and second transparent ITO (12) (13) , The first and second transparent ITO (12) 13 and the electrochromic layer 14 The first is provided in the stack to the second transparent ITO (12) (13).

As shown in FIG. 3, the electrochromic layer 14 is provided with a sealing device 20 to seal the gel.

3, FIG. 5, and FIG. 6, when the power source (0.4 to 1.6 Vdc) is turned on, the electrochromic layer 14 is oxidized and reduced to form a black color The front primary screen 16 is displayed, and when the power is turned off, a transparent color is formed to absorb and transmit the light of the background image, and the rear secondary screen 17 ) Is displayed.

The electrochromic layer 14 can adjust transmittance using the power of the power source.

The operation of the transparent display device according to the first preferred embodiment of the present invention will be described in more detail with reference to FIGS. 3, 5 and 6. FIG.

3, the transparent display device 10 includes a glass substrate 2, a transparent anode 3, a hole transport layer 4, a light emitting layer 5, an electric transport layer 6, The first and second transparent ITO layers 12 and 13 and the electrochromic layer 14 and the substrate 15 are formed of a transparent organic light emitting diode 1 constituted of a transparent cathode 7 and an insulator 11, .

The transparent display device 10 configured as described above is applied to the watch-type portable terminal 100.

Here, the transparent display device 10 may be applied to electronic devices and all portable communication devices other than the watch-type portable terminal 100

As shown in FIG. 5, when power is supplied to the transparent display device 10, a power source (0.4 to 1.6 Vdc) is turned on to the electrochromic layer 14. At the same time, the two chemicals of the electrochromic layer 14 are oxidized and reduced, respectively, to form a black color, thereby blocking the light of the clock background image of the watch-type portable terminal 100.

At this time, a phone mode image of the watch-type portable terminal 100 is displayed.

In this state, the user can talk through the phone mode image of the watch-type portable terminal 100.

In the watch-type portable terminal 100, the front primary screen 16 becomes the background of the phone mode and the rear secondary screen 17 becomes the clock background.

As described above, when the watch-type portable terminal 100 is in the phone mode, the front primary screen 16 is displayed and the clock background of the rear secondary screen 17 is not visible.

Here, as shown in FIG. 6, when power is not supplied to the transparent display device 10, power to the electrochromic layer 14 is turned off. At the same time, the electrochromic layer 14 and the first and second transparent ITOs 12 and 13 are transparent to absorb and transmit the light of the clock background image of the watch-type portable terminal 100.

At this time, the front primary screen 16 of the watch-type portable terminal 100 is transparent and the clock background of the rear secondary screen 17 is visible.

In this manner, the backside clock background of the watch-type portable terminal 100 is displayed without power supply, thereby reducing power consumption, enabling jewelry decoration, and thereby enabling advanced image production.

The operation of the transparent display device according to the second preferred embodiment of the present invention will be described in more detail with reference to FIGS. 4, 5, and 6. FIG.

4, the transparent display device 30 includes a glass substrate 2, a transparent anode 3, a hole transport layer 4, a light emitting layer 5, an electric transport layer 6, The first and second transparent ITO 32 and 33 and the first and second transparent ITO 32 and 33 constitute a transparent organic light emitting diode 1 composed of a transparent cathode 7 and an insulator 31, The first and second light guides 34 and 35 and the transmissive LCD 36 disposed between the first and second light guides 34 and 35, White Liquid-crystal).

The transparent display device 30 configured as described above is applied to the watch-type portable terminal 100.

5, when the power is supplied to the transparent display device 30, the transmissive LCD 36 is turned on and operated so that the rear surface of the watch-type portable terminal 100 And blocks the light of the clock background image which is the secondary screen 17.

At this time, a phone mode image which is a front primary screen 16 of the watch-type portable terminal 100 is displayed.

In this state, the user can talk through the phone mode image of the watch-type portable terminal 100.

In this way, when the watch-type portable terminal 100 is in the phone mode, the transmissive LCD 36 operates to cause the front primary screen 16 to operate and the clock background of the rear secondary screen 17 to be invisible .

6, when the power is not supplied to the transmissive LCD 36, the transmissive LCD 36 is kept transparent so that the rear secondary screen 17 of the watch- To transmit the light of the clock background image.

At this time, the front primary screen 16 of the watch-type portable terminal 100 is transparent and the clock background of the rear secondary screen 17 is visible.

Likewise, the backside clock background of the watch-type portable terminal 100 is displayed without power supply, thereby reducing power consumption, enabling jewelry decoration, and thereby enabling advanced image production.

The above-described transparent display device of the present invention is not limited to the above-described embodiments and drawings, and various substitutions, modifications, and changes may be made without departing from the technical idea of the present invention. Will be apparent to those of ordinary skill in the art.

Glass substrate: transparent anode: 3
Hole transport layer: 4 luminescent layer: 5
Electronic Transmission Layer: 6 Transparent Cathode: 7
A transparent organic light emitting diode; 1 insulator; 11
First and second transparent ITO: 12,13 electrochromic layers; 14
Board ; 15

Claims (2)

A watch-type portable terminal having a clock unit capable of providing time information,
An electrochromic layer formed to be transparent or opaque; And
Wherein the electrochromic layer is opaque and is displayed in a phone mode background and a phone call is provided in the phone mode background and the electrochromic layer is capable of providing time information through transparency, Type portable terminal.
The watch type portable terminal of claim 1, wherein the display device is stacked on the electrochromic layer.

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