KR20040082984A - Display mirror - Google Patents

Abstract

PURPOSE: A display mirror is provided to obtain a function of displaying images and a function of reflecting images. CONSTITUTION: A display mirror(1) includes a transparent substrate(11), the first and second electrodes(12,14), a light-emitting part(13), and a mirror plate(15). The first electrode is arranged on the transparent substrate. The second electrode is formed above the first electrode. The light-emitting part is arranged between the first and second electrodes. The mirror plate is located on the side of the transparent substrate, which is opposite to the side combined with the first electrode. The light-emitting part is formed of a single or multi-level electron emission layers or light-emission media.

Description

Display mirror {DISPLAY MIRROR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to display mirrors, and more particularly, to a display mirror capable of meeting the demands of high image resolution and high information density, and having dual functions of image display and image reflection.

Since the mirror can reflect the image, it becomes indispensable for daily life. In recent years, the industry has combined mirrors and displays to provide mirrors with the dual function of image display and image reflection.

For example, a display mirror having a light emitting diode (LED) attached to the rear surface of a mirror is proposed. However, since the analysis degree of the whole image is not good, it cannot apply to the image display of high information density. In addition, since the size of the light emitting diode of the light emitting diode is modularized, the original planar thin characteristic of the display mirror is lost.

Moreover, the display mirror which attached the liquid crystal display (LCD) to the rear surface of a mirror surface is also proposed. However, since the liquid crystal cell enclosed in the liquid crystal display does not emit light, an image can be displayed by attaching a backlight on the back side, but its luminous efficiency, contrast, and viewing angle are not so good. Moreover, since the structure of a liquid crystal display is complicated, it is necessary to arrange a backlight, a color filter, a polarizing plate, etc., and it is comparatively expensive.

Moreover, with the expansion of the application area and the increase of the content of transmission information, display mirrors with display functions currently used cannot already meet the demands of high image interpretation and high information precision.

The present invention has been made in view of the above problems, and an object thereof is to solve the drawbacks of the prior art and to provide a display mirror having dual functions of image display and image reflection.

1 shows a display mirror of embodiment 1 of the present invention;

FIG. 2 shows another display mirror of Embodiment 1 of the present invention; FIG.

3A and 3B show a concrete implementation of the display mirror of Embodiment 1;

4A and 4B show a display mirror of Embodiment 2;

Explanation of symbols for the main parts of the drawings

1: display mirror 11: transparent substrate

111: first surface 112: second surface

12: second surface 13: organic light emitting portion

14: second electrode 15: mirror plate

151: light transmitting plate 152: light transmissive reflective layer

2: display mirror 21: transparent substrate

211: first surface 212: first surface

22: first electrode 23: organic light emitting portion

24: second electrode 25: mirror plate

251: light transmitting plate 252: light transmissive reflective layer

In order to achieve the above object, the display mirror according to the present invention is a transparent substrate, a first electrode provided on the projecting substrate, a second electrode provided on the first electrode, the first electrode and the second And a light emitting portion provided between the electrode and a mirror plate provided on an opposite side of the side where the transparent substrate and the first electrode are coupled to each other.

The light emitting portion is an electroluminescent region and is constituted by a single layer or a multi-layer electroluminescent layer or a light emitting medium (Media). In addition, the light emission method of a light emission medium is not limited to the method etc. which lightly emit a light emission medium by an electroroll gas.

EMBODIMENT OF THE INVENTION Hereinafter, the display of preferable embodiment of this invention is demonstrated, referring drawings.

Example 1

As shown in FIG. 1, the display mirror 1 of Embodiment 1 of the present invention includes a transparent substrate 11, a first electrode 12, an organic light emitting part 13, and a second electrode 14. And the mirror plate 15 is provided. The transparent substrate 11 has a first surface 111 and a second surface 112 opposite the first surface 111. The first electrode 12 is provided on the first surface 111 of the transparent substrate 11. The second electrode 14 is provided on the first electrode 12. The organic light emitting part 13 is provided between the first electrode 12 and the second electrode 14. The mirror plate 15 engages with the second surface 112 of the transparent substrate 11.

In the present embodiment, the transparent substrate 11 may be a flexible substrate or a rigid substrate. The transparent substrate 11 may be a plastic substrate or a glass substrate. Among them, the flexible substrate or the plastic substrate is, for example, a polycarbonate (PC) substrate, a polyester (PET) substrate, a cyclic olefin copolymer (COC) substrate, or a metalocene base-cyclic olefin copolymer ( mCOC) substrate.

The first electrode 12 is formed on the transparent substrate 11 by sputtering or ion plating. Here, the first electrode 12 is generally an anode, and the material is a transparent conductive metal oxide such as indium tin oxide (ITO), aluminum zinc oxide (AZO), indium zinc oxide (IZO), or the like. .

The organic light emitting portion 13 generally includes a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer (not shown). The material of the hole injection layer is mainly a copper phthalocyanine compound (CuPc). The material of the hole transport layer is mainly 4,4'-bis [N- (1-naphthyl) -N-phenylamino] biphenyl (NPB). The material of the electron injection layer is mainly lithium fluoride (LiF). The material of the electron transport layer is mainly tris (8-quinolinorate-N 1, O 8) -aluminum (Alq). In addition, the organic light emitting part 13 is formed on the first electrode 12 by vapor deposition, spin coating, inkjet printing, or printing. The light emitted from the organic light emitting portion 13 is, for example, monochromatic light such as blue light, green light, red light, white light, or color light formed by monochromatic light.

The second electrode 14 is formed on the organic light emitting portion 13 by vapor deposition or sputtering, and the material is, for example, aluminum (Al), calcium (Ca), magnesium (Mg), silver (Ag). ) Or a metal or metal alloy. Of course, the material of the second electrode 14 may be aluminum (Al) / lithium fluoride (LiF) or silver (Ag).

The mirror plate 15 includes a light transmissive plate 151 and a light transmissive reflective layer 152 formed on the light transmissive plate 151. As shown in FIG. 1, the light transmissive reflective layer 152 couples with the second surface 112 of the transparent substrate 11. In addition, the light transmissive plate 151 may be provided between the light transmissive reflective layer 152 and the transparent substrate 11 as shown in FIG.

In this embodiment, the method of bonding with an adhesive may be sufficient as the bonding method, and the method of fixing the opposing position of the mirror surface 15 and the transparent substrate 11 by a fixing member (not shown) may be sufficient. In addition, the area and shape of the mirror surface plate 15 can be adjusted as needed.

In the present embodiment, the light transmissive reflective layer 152 is formed on the light transmissive substrate 151 by vapor deposition, sputtering, ion plating, or affixing. In addition, the light transmissive reflective layer 152 is a metal or dielectric material, and its light transmittance is 10% to 90%.

In the present invention, when the organic light emitting unit 13 emits light, what is visible to the user is a screen displayed by the display mirror 1, for example, a character, a figure, an image, and the like. On the other hand, when the organic light emitting part 13 does not emit light, what is visible to the user is an image reflected by the display mirror 1, that is, a reflection image of the background of the user side.

In addition, as shown in FIG. 3A, when the area of the mirror plate 15 is larger than the area of the organic light emitting layer 13, the user can view the display screen while using the mirror surface function. For example, while the user uses the mirror surface of a dressing table, a portion of the mirror surface may view the screen of the television program (see FIG. 3B).

Example 2

As shown in FIG. 4A, the display mirror 2 of Embodiment 2 of the present invention includes a transparent substrate 21, a first electrode 22, an organic light emitting unit 23, and a second electrode 24. And the mirror plate 25. The transparent substrate 21 has a first surface 211 and a second surface 212 opposite the first surface 211. The first electrode 22 is provided on the first surface 211 of the transparent substrate 21. The second electrode 24 is provided on the first electrode 22. The organic light emitting unit 23 is provided between the first electrode 22 and the second electrode 24. The mirror plate 25 is provided to face the second surface 212 of the transparent substrate 21 at a predetermined interval.

In addition, since the member of the display mirror 2 is the same as that of the display mirror 1 of Example 1, and its characteristic and function are the same aspect, the description is abbreviate | omitted.

In this embodiment, the mirror surface plate 25 is provided to face the second surface 212 of the transparent substrate 21 with a predetermined gap, and the positions of the mirror plate 25 and the transparent substrate 21 are fixed to the fixing member ( And not shown). The mirror plate 25 includes a light transmissive plate 251 and a light transmissive reflective layer 252 formed on the light transmissive plate 251. The transparent reflective layer 252 is provided to face the second surface 212 of the transparent substrate 21 at a predetermined interval, as shown in FIG. 4A. In addition, the light transmissive plate 251 may be provided between the light transmissive reflective layer 252 and the transparent substrate 21 as shown in FIG. 4B.

In the present embodiment, the light emitting portion is provided on the first electrode and is an organic electroluminescence (OEL) layer or an electroluminescence (EL) layer. Here, the organic electroluminescent layer generally includes a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer (not shown). The electroluminescent layer is made of a semiconductor material (for example, group II-IV semiconductor material), a fluorescent material, or both. The light emitting portion is formed on the first electrode by vapor deposition, spin coating, inkjet printing, or printing. The light emitted from the light emitting portion is, for example, monochromatic light such as blue light, green light, red light, white light, or color light formed by monochromatic light.

As mentioned above, although embodiment of this invention was described in detail with reference to drawings, a specific structure is not limited to this embodiment, Even if there exists a design change etc. of the range which does not deviate from the summary of this invention, it is included in this invention.

The display mirror according to the present invention can display an image when the light emitting unit emits light by combining a mirror plate having a transparent reflective layer and the display, but can reflect the image when the light emitting unit does not emit light. Compared with the prior art, the present invention gives the display mirror a dual function of image display and image reflection by matching the planar configuration of the reflection mirror and the display. This expands the application range of the mirror and also enhances the user's operational convenience. In addition, since the manufacturing process of the display is simple and the overall cost is not expensive, it is suitable for commercialization.

Claims (11)

A transparent substrate, a first electrode provided on the transparent substrate, a second electrode provided on the first electrode, a light emitting portion provided between the first electrode and the second electrode, and the transparent substrate And a mirror plate provided on an opposite side of the side to which the first electrode is coupled. The display mirror of claim 1, wherein the light emitting part comprises at least one of an organic electroluminescent layer, an electroluminescent layer, and a light emitting medium. The display mirror of claim 1, wherein the mirror plate is coupled to the transparent substrate. The display mirror of claim 1, wherein the mirror plate is disposed to face the transparent substrate at a predetermined interval. According to claim 1, wherein the mirror plate is provided with a light transmissive plate, and a light transmissive reflective layer formed on the light transmissive plate, wherein the light transmissive reflective layer is provided between the transparent substrate and the light transmissive plate Display mirror. According to claim 1, wherein the mirror plate is provided with a light transmissive plate, and a light transmissive reflective layer formed on the light transmissive plate, wherein the light transmissive plate is provided between the light transmissive reflective layer and the transparent substrate Display mirror. 7. A display mirror as claimed in claim 5 or 6, wherein the light transmissive reflective layer is metal. 7. A display mirror as claimed in claim 5 or 6, wherein the light transmissive reflective layer is a dielectric material. The display mirror according to claim 5 or 6, wherein the light transmissive reflective layer has a light transmittance of 10% to 90%. The display mirror of claim 1, wherein the transparent substrate is at least one selected from the group consisting of a flexible substrate, a rigid substrate, a plastic substrate, and a glass substrate. The display mirror of claim 1, wherein the first electrode is a conductive metal oxide electrode, and the second electrode selects at least one from the group consisting of aluminum, calcium, magnesium, and silver.