KR20110040798A - Organic light emitting diode for stereoscopic display - Google Patents

Abstract

PURPOSE: An organic light emitting diode for a stereoscopic display device is provided to use a retarder unit in which a patterned wire grid polarizing plate and a 1/4 retarder are alternatively formed, thereby realizing easy and inexpensive manufacture of organic light emitting diodes. CONSTITUTION: A cathode(120) is formed on a first substrate(110). An electron injection layer(130) is formed on the cathode. An electron transport layer(140) is formed on the electron injection layer. A light emitting layer(150) is formed on the electron transport layer. A hole transport layer(160) is formed on the light emitting layer. A hole injection layer(170) is formed on the hole transport layer.

Description

Organic light emitting diode stereoscopic display device {ORGANIC LIGHT EMITTING DIODE FOR STEREOSCOPIC DISPLAY}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic light emitting diode stereoscopic display device. More specifically, a thin metal material uses a wire grid polarizer patterned alternately at 45 ° and 135 ° forming an angle of 90 °, or a thin metal material. The present invention relates to a wire grid polarizer patterned in one direction at 45 ° or 0 °, and an organic light emitting diode stereoscopic image display device using a retarder portion in which 1/4 retarders and 3/4 retarders are alternately formed.

In general, two eyes of a person are about 65 mm apart, so when looking at an object, each eye feels a three-dimensional appearance while looking at the other side of the object. This is called binocular disparity by left and right binocular. This binocular disparity is perceived as an image having a stereoscopic effect by synthesizing each image obtained from two eyes in the brain. Using this principle, stereoscopic images can be displayed.

Techniques for displaying a stereoscopic image include a binocular parallax, a compound parallax, and the binocular parallax is a method of using a parallax image of left and right eyes having the largest stereoscopic effect.

The conventional apparatus for displaying stereoscopic images has a problem in that productivity is low and production costs are high because a separate panel for displaying a 3D image is attached to the apparatus for displaying a 2D image.

Accordingly, the present invention has been made in order to solve the problems of the prior art, the technical problem to be achieved by the present invention is a wire grid patterned alternately with a thin metal material of 45 °, 135 ° to form an angle of 90 °. An organic light emitting diode stereoscopic image display device using a polarizing plate or a wire grid polarizing plate having a thin metal material patterned in one direction at 45 ° or 0 ° and a retarder portion in which 1/4 and 3/4 retarders are alternately formed. To provide.

Technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

In order to achieve the above object, an organic light emitting diode stereoscopic display device according to a first embodiment of the present invention includes a first substrate, a cathode formed on the first substrate, an electron injection layer formed on the cathode, and the electron injection. An electron transport layer formed on the layer, a light emitting layer formed on the electron transport layer, a hole transport layer formed on the light emitting layer, a hole injection layer formed on the hole transport layer, an anode formed on the hole injection layer, 1/4 formed on the anode A retarder, a thin plate metal material formed on the quarter retarder, disposed on the wire grid polarizer and the wire grid polarizer alternately patterned at a first angle and a second angle at 90 ° with the first angle It includes a second substrate.

In order to achieve the above object, the organic light emitting diode stereoscopic display device according to the second embodiment of the present invention includes a first substrate, a thin metal material on the first substrate, and a first angle, and the first angle and 90 degrees. A wire grid polarizer alternately patterned at a second angle of degrees, a quarter retarder formed on the wire grid polarizer, a semi-transmissive cathode formed on the quarter retarder, and an electron injection formed on the semi-transmissive cathode Layer, an electron transport layer formed on the electron injection layer, a light emitting layer formed on the electron transport layer, a hole transport layer formed on the light emitting layer, a hole injection layer formed on the hole transport layer, a reflective anode formed on the hole injection layer and the reflection And a second substrate disposed on the anode.

The organic light emitting diode stereoscopic display device according to the embodiments of the present invention uses a wire grid polarizer patterned alternately at 45 ° of thin metal material and 135 ° forming 90 ° of the angle, or 45 ° of thin metal material. By using a wire grid polarizer patterned in one direction at 0 ° or 0 ° and a retarder portion in which 1/4 retarders and 3/4 retarders are alternately formed, it can be manufactured more easily and inexpensively.

1 is a cross-sectional view of an organic light emitting diode stereoscopic display device according to a first embodiment of the present invention.
2 is a perspective view of an organic light emitting diode stereoscopic display device according to a first embodiment of the present invention;
3 is a cross-sectional view of an organic light emitting diode stereoscopic display device according to a second embodiment of the present invention.
4 is a cross-sectional view of an organic light emitting diode stereoscopic display device according to a third embodiment of the present invention.
5 is a perspective view of an organic light emitting diode stereoscopic display device according to a third embodiment of the present invention;
6 is a cross-sectional view of an organic light emitting diode stereoscopic display device according to a fourth embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Specific details of other embodiments are included in the detailed description and the drawings. Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. Like reference numerals refer to like elements throughout.

1 is a cross-sectional view of an organic light emitting diode stereoscopic display device according to a first embodiment of the present invention.

As shown in FIG. 1, the organic light emitting diode stereoscopic display device according to the first embodiment of the present invention has a bottom emission type organic light emitting diode structure, and includes a first substrate 110, a cathode 120, and an electron injection layer ( 130, electron transport layer 140, light emitting layer 150, hole transport layer 160, hole injection layer 170, anode 180, quarter retarder 185, wire grid polarizer 190, and second It is configured to include a substrate (200).

Here, the first substrate 110 and the second substrate 200 may be an organic substrate or a transparent plate plastic substrate, the cathode 120 is aluminum-lithium or magnesium-silver on the first substrate 110 It may be formed of an alloy material such as.

Meanwhile, the electron injection layer 130 may be formed of a tris aluminum and metal carboxylate mixed material on the cathode 120, and the electron transport layer 140 may be formed of tris aluminum on the electron injection layer 130. .

In addition, the emission layer 150 may be formed of an organic material, such as diphenylethenyl, on the electron transport layer 140, the light of R, G, B is emitted.

The hole transport layer 160 may be formed of bis benzidine (NPB) on the light emitting layer 150, and the hole injection layer 170 may be formed of copper phosphatelocine (CuPc) on the hole transport layer 160.

In addition, the anode 180 may be formed of a transparent electrode material such as indium tin oxide (ITO) on the hole injection layer 170, and the quarter retarder 185 may be formed on the anode 180. have. The wire grid polarizer 190 is alternately patterned on a quarter retarder 185 with 45 ° (or 0 °) of thin metal material and 135 ° (or 90 °) forming 90 ° with the angle, The second substrate 200 is disposed on the wire grid polarizer 190.

Specifically, the wire grid polarizer 190 is patterned alternately at 45 ° and 135 ° after applying a metal material to the 1/4 retarder 185 at a thickness of 100 nm to 500 nm.

Accordingly, in the organic light emitting diode stereoscopic display device according to the first embodiment of the present invention, as shown in FIG. 2, light emitted from the R portion of the light emitting layer 150 passes through a 45 ° region of the wire grid polarizer 190. After passing through the linear polarizing glasses 220 to reach the right eye 222 of the observer, the light from the L portion of the light emitting layer passes through the 135 ° region of the wire grid polarizer 190 and passes through the linear polarizing glasses 220 The viewer's left eye 221 is reached, and these two images are synthesized in the brain to feel a three-dimensional feeling.

3 is a cross-sectional view of an organic light emitting diode stereoscopic display device according to a second embodiment of the present invention.

As shown in FIG. 3, the organic light emitting diode stereoscopic display device according to the second embodiment of the present invention has a top emission organic light emitting diode structure, and includes a first substrate 110, a semi-transmissive cathode 121, and electron injection. Layer 130, electron transport layer 140, light emitting layer 150, hole transport layer 160, hole injection layer 170, reflective anode 181, quarter retarder 185, wire grid polarizer 190 And a second substrate 200, which is different from the organic light emitting diode stereoscopic image display device according to the first embodiment.

In the organic light emitting diode stereoscopic image display device according to the second embodiment, the wire grid polarizer 190 is disposed on the first substrate 110 and includes a transflective cathode 121 and a reflective anode 181.

4 is a cross-sectional view of an organic light emitting diode stereoscopic display device according to a third embodiment of the present invention.

As shown in FIG. 4, the organic light emitting diode stereoscopic display device according to the third embodiment of the present invention has a bottom emission type organic light emitting diode structure, and includes a first substrate 110, a cathode 120, and an electron injection layer ( 130, electron transport layer 140, light emitting layer 150, hole transport layer 160, hole injection layer 170, anode 180, upper quarter retarder 185, wire grid polarizer 191, lower The 1/4 retarder 210 and the 3/4 retarder 211 are configured to include a retarder portion and a second substrate 200 alternately formed.

Here, the first substrate 110 and the second substrate 200 may be an organic substrate or a transparent plate plastic substrate, the cathode 120 is aluminum-lithium or magnesium-silver on the first substrate 110 It may be formed of an alloy material such as.

Meanwhile, the electron injection layer 130 may be formed of a tris aluminum and metal carboxylate mixed material on the cathode 120, and the electron transport layer 140 may be formed of tris aluminum on the electron injection layer 130. .

In addition, the emission layer 150 may be formed of an organic material, such as diphenylethenyl, on the electron transport layer 140, the light of R, G, B is emitted.

The hole transport layer 160 may be formed of bis benzidine (NPB) on the light emitting layer 150, and the hole injection layer 170 may be formed of copper phosphatelocine (CuPc) on the hole transport layer 160.

In addition, the anode 180 may be formed of a transparent electrode material such as indium tin oxide (ITO) on the hole injection layer 170, and the upper quarter retarder 185 may be formed on the anode 180. Can be. The wire grid polarizer 191 is patterned in one direction with a thin metal material at 45 ° or 0 ° on the upper retarder 185, and the lower quarter retarder 210, 3 is formed on the wire grid polarizer 191. The retarder portion in which the / 4 retarders 211 are alternately arranged is disposed, and the second substrate 200 is disposed on the retarder portion.

Specifically, the wire grid polarizing plate 191 is patterned in one direction at 45 ° or 0 ° after applying a metal material on the anode 180 at a thickness of 100 nm to 500 nm.

Therefore, in the organic light emitting diode stereoscopic display device according to the third embodiment of the present invention, as shown in FIG. After passing through the retarder 210 and passing through the circular polarizing glasses 230, the viewer reaches the right eye 222, and the light from the L portion of the light emitting layer 150 passes through the upper quarter retarder 185. Passing through the wire grid polarizer 191, passing through the 3/4 retarder 211 area and passing through the circular polarizing glasses 230, the left eye 221 of the observer is reached, and these two images are synthesized in the brain. You can feel the three-dimensional effect.

6 is a cross-sectional view of an organic light emitting diode stereoscopic display device according to a fourth embodiment of the present invention.

As shown in FIG. 6, the organic light emitting diode stereoscopic display device according to the fourth embodiment of the present invention has a top emission type organic light emitting diode structure, and includes a first substrate 110, a transflective cathode 121, and electron injection. Layer 130, electron transport layer 140, light emitting layer 150, hole transport layer 160, hole injection layer 170, reflective anode 181, lower quarter retarder 185 wire grid polarizer 191 The upper quarter retarder 210 and the third quarter retarder 211 include a retarder portion and a second substrate 200 alternately formed, and the organic light emitting diode stereoscopic image display according to the third embodiment is performed. The difference from an apparatus is demonstrated.

In the organic light emitting diode stereoscopic image display device according to the fourth embodiment, the retarder unit is disposed on the first substrate 110, the wire grid polarizer 191 is disposed on the retarder unit, and the transflective cathode 121 is reflected. An anode 181.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

110: first substrate 120: cathode
121: semi-transmissive cathode 130: electron injection layer
140: electron transport layer 150: light emitting layer

Claims (4)

A first substrate;
A cathode formed on the first substrate;
An electron injection layer formed on the cathode;
An electron transport layer formed on the electron injection layer;
An emission layer formed on the electron transport layer;
A hole transport layer formed on the light emitting layer;
A hole injection layer formed on the hole transport layer;
An anode formed on the hole injection layer;
A quarter retarder formed on the anode;
A wire grid polarizer in which a thin sheet metal material formed on the quarter retarder is alternately patterned at a first angle and at a second angle forming 90 ° with the first angle; And
An organic light emitting diode stereoscopic display device comprising a second substrate disposed on the wire grid polarizer.
A first substrate;
A wire grid polarizer in which a thin metal material is alternately patterned on the first substrate at a first angle and at a second angle forming 90 ° with the first angle;
A quarter retarder formed on the wire grid polarizer;
A transflective cathode formed on said quarter retarder;
An electron injection layer formed on the transflective cathode;
An electron transport layer formed on the electron injection layer;
An emission layer formed on the electron transport layer;
A hole transport layer formed on the light emitting layer;
A hole injection layer formed on the hole transport layer;
A reflective anode formed on the hole injection layer; And
An organic light emitting diode stereoscopic display device including a second substrate on the reflective anode.
3. The method according to claim 1 or 2,
The wire grid polarizer is an organic light emitting diode stereoscopic display device, characterized in that the thin metal material is alternately patterned by 45 ° and 135 °.
3. The method according to claim 1 or 2,
The wire grid polarizer is an organic light emitting diode stereoscopic display device, characterized in that the thin metal material is alternately patterned by 0 ° and 90 °.

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