JP2001155851A - El display device and electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide EL display device with simple structure that has mirror function as well as other display functions, and electronic device having the same. SOLUTION: The EL display device 9 comprises a first transparent substrate 91, a second transparent substrate 92, a plurality of band shaped electrode (negative) 93, a plurality of band shaped electrode 94 (positive), a first light emitting layer 951 for a plurality of red colored light emitting, a second light emitting layer 952 for a plurality of green colored light emitting, a third light emitting layer 953 for a plurality of blue colored light emitting, and sealing portion 96. The substrate 92 is disposed at display side (upper side in fig. 4), and the substrate 91 is disposed at opposed side to the display side (lower side in fig. 4). The display side and opposed side of the substrate 91 are furnished with the metal thin film 97. An upper side surface 971 of the metal thin film 97 at upper side in fig. 4 is formed as a mirror.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an EL display device and an electronic device.

[0002]

2. Description of the Related Art A plurality of pixels made of an organic light emitting material (organic EL) are arranged on a substrate, and the pixels are made to emit light by energization to display an electronic image.
Display devices) are known.

[0003] However, the conventional EL display has only the original function of the display device such as displaying an electronic image.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide an EL display device which has a simple structure and has a mirror function in addition to the original function of the display device, and an electronic device having such an EL display device. To provide.

[0005]

This and other objects are achieved by the present invention which is defined below as (1) to (9).

(1) An E having a transparent substrate provided on the side opposite to the display surface, and a light emitting portion having an organic light emitting material and having pixels arranged to emit light when electricity is supplied to the organic light emitting material.
An EL display device, wherein the substrate is provided with a mirror surface for reflecting light incident from the display surface side on the substrate.

(2) The EL display device according to (1), wherein the mirror surface is located on a side opposite to a display surface of the substrate.

(3) An EL display device utilizing EL light emission, wherein a mirror surface for reflecting light incident from the display surface side is provided on a side opposite to the display surface, and the reflected light is transmitted from the display surface to the outside. An EL display device, which is configured to emit light toward the same.

(4) The EL display device is configured to display an electronic image.
An EL display device according to any one of the above.

(5) When viewed from the display surface side, in any of the above (1) to (4), in a non-light emitting state, a reflection image of the object on the display surface side on the mirror surface is visible. The EL display device as described in the above.

(6) The EL according to any one of (1) to (5), wherein the mirror surface is formed of a metal thin film.
Display device.

(7) An electronic device comprising the EL display device according to any one of (1) to (6).

(8) The electronic device according to (7), wherein the electronic device is a portable electronic device.

(9) The electronic device according to (8), wherein the electronic device is a portable communication device.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an EL display device and an electronic device according to the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment in which the electronic device of the present invention is applied to a mobile phone (portable communication device).
FIG. 2 is a diagram viewed from the direction of arrow A in FIG.

As shown in FIG. 1, a portable telephone (portable communication device) 1 which is an electronic device of the present invention includes a first housing 3 and a second housing 3.
The main body 2 is connected to the housing 4 via a hinge 5 so as to be rotatable.

An input section (key input section) 31 including a numeric keypad, a mode setting key, a function key, and the like is provided inside the first housing 3.

Further, the hinge portion 5 inside the first housing 3 is provided.
A microphone 32 for telephone conversation is provided at the end opposite to.

On the other hand, a display section 41 (a full-color EL display 9) constituted by an EL display device of the present invention described later is provided inside the second housing 4. The display unit 41 displays, for example, telephone numbers, characters, symbols, figures, images (still images, moving images), and the like. The display unit 41, that is, the EL display (EL display device) 9 will be described later in detail.

Further, a hinge portion 5 inside the second housing 4 is provided.
A speaker 42 for telephone conversation is installed at the end opposite to the above.

An antenna 43 is provided at an end of the second housing 4. The antenna 43 may be fixedly installed with respect to the housing 4 or may be a stowable / drawable type (such as a monopole antenna).

The hinge portion 5 has a substantially cylindrical shape, and in this embodiment, is constructed by connecting and assembling a plurality of (three) ring members.

The ring members 51 and 52 located at both ends are
Ring members 51 and 5 are fixedly installed on the first housing 3.
The ring member 53 located between the two is fixedly installed on the second housing 4, and the ring member 53 is connected to the ring members 51 and 52.
, The first housing 3 and the second housing 4 rotate. By this rotation, the first housing 3 and the second housing 3
Can be changed between a state in which the first housing 3 is opened by, for example, 120 to 180 ° and a state in which the first housing 3 and the second housing 4 are closed (folded and overlapped). .

In the illustrated configuration, the hinge portion 5 has three ring members, but the number of ring members is not limited to this, and may be, for example, four or more.

The structure of the hinge portion 5 can be a known structure described in, for example, JP-A-8-186628 and JP-A-11-41328.

Each of the first housing 3 and the second housing 4 has a built-in electronic circuit (circuit board), and is connected therebetween by a flexible printed circuit board (both not shown). Have been. Flexible printed circuit boards
The hinge 5 is arranged so as to be wound along the cylindrical wall of the hinge 5. Thereby, the relative rotation between the first housing 3 and the second housing 4 can be performed without any trouble.

The interior space 54 of the hinge 5 is removably loaded with a cartridge 6 for storing cosmetics.

As shown in FIG. 2, at the end of the ring member 51, an annular rib 55 is formed from the outer periphery toward the inside, and an inner space 54 and an inner space 54 are formed inside the rib 55. An opening 56 communicating with the outside is formed.

When the cartridge 6 is inserted into the inner space 54, the end of the cartridge 6 comes into contact with the rib 55, and the axial position of the cartridge 6 is regulated. That is, at the time of the loading operation of the cartridge 6 into the internal space 54, the rib 55 can prevent the cartridge 6 from coming off due to excessive pushing.

As described above, the rib 55 is
Functions as positioning means for positioning the device relative to the apparatus main body 2 when the device is loaded.

When the cartridge 6 is inserted to the innermost part of the internal space 54 (the end of the cartridge 6 is
5), and the cartridge 6 is securely loaded in the internal space 54 by fitting of, for example, an uneven fitting structure (not shown) formed between the cartridge 6 and the hinge portion 5. Holding means (locking means) can be provided. As a result, the cartridge 6 is
It is effectively prevented from unintentionally leaving the device.

When taking out the cartridge 6 loaded in the internal space 54, the end face of the cartridge 6 is pressed in the direction of arrow A with the finger through the opening 56. Thereby, the cartridge 6 can be easily taken out. Here, in the case where the holding means is provided, the holding means may be pressed with a force capable of releasing the holding (concavity and convexity fitting) by the holding means.

As described above, the opening 56 functions as a take-out means for taking out the loaded cartridge 6.

The cartridge 6 in this embodiment has a substantially cylindrical shape. The cartridge 6 may function as a rotation axis of the hinge 5 described above.

The inside of the cartridge 6 is formed with four holes 6a to 6d opened to both end surfaces of the cartridge. Each of the holes 6a to 6d is formed in a direction parallel to the axial direction of the cartridge 6, and they are preferably formed at equal angular intervals (90 ° intervals) in the circumferential direction.

In the holes 6a to 6d of the cartridge 6, cosmetics described below are selectively stored (inserted). In this embodiment, any four (or three or less) types of cosmetics are selected from the five types of cosmetics, and these are inserted into the holes 6.
A desired hole among the holes a to 6d can be loaded.

The type of cosmetics is not particularly limited. In the present embodiment, lipstick 8a, mascara 8b, brush 8c, eyeshadow 8d and perfume contained in container 7e are mentioned.

The lipstick 8a is stored in the container 7a, the mascara 8b is stored in the container 7b, the brush 8c is stored in the container 7c, and the eye shadow 8d is stored in the container 7d. Here, each of the containers 7a to 7d is formed of an elongated cylindrical cylinder having one end closed. The container 7b contains mascara liquid, the container 7c contains powder as needed, and the container 7d contains an eye shadow coloring agent. The container 7e is capable of storing a liquid, and contains a perfume (including a lotion, a deodorant, and the like) inside. A lid 8e is screwed into the mouth of the container 7e, thereby ensuring liquid tightness of the container 7e.

The containers 7a to 7e are removably loaded into the holes 6a to 6d of the cartridge 6.

Knobs 81 are formed at the ends of the handles of the lipstick 8a, mascara 8b, brush 8c and eyeshadow 8d, and at the end of the lid 8e. By operating the knob 81 with a finger, the user can easily attach and detach the container 7a to 7e.

It is preferable that each of the knobs 81 or the vicinity thereof has a different shape or size, a different color, a letter, a numeral, a symbol, or the like. Thus, the type of cosmetic corresponding to the knob 81 can be identified (identified) by looking at the knob 81, and the desired type of cosmetic can be taken out without fail.

In the embodiment shown in FIG. 1, among the five types of cosmetics, four types of cosmetics, namely, lipstick 8a,
A mascara 8b, a brush 8c and an eye shadow 8d selected in containers 7a to 7d corresponding thereto are selected,
These were inserted into the holes 6a to 6d of the cartridge 6, respectively, and loaded. At this time, for example, one of the four types of cosmetics loaded in the cartridge 6 is
It can also be used in place of the perfume container 7e and the lid 8e.

It is not always necessary to load cosmetics into all four holes 6a to 6d.
Select any cosmetics for one or less holes,
It can be loaded.

When the contents in each of the containers 7a to 7e become empty, the containers (or cosmetics) are inserted into the holes 6a to 6e.
d and can be replaced with a new one.
Further, the cartridge 6 may be replaced with a new one.

For example, when a woman goes out, she selects her favorite cosmetics and cosmetics that are frequently used, loads them into the cartridge 6, loads the cartridge 6 into the internal space 54, and removes the mobile phone 1 in this state. Go out with you. Since the mobile phone 1 has an original function as a telephone, it is possible to make a call (outgoing and receiving) when needed. However, during or during a call, the makeup can be applied using the loaded cosmetics. It can be done and is convenient.

When using cosmetics, the cartridge 6 and the containers 7a to 7d (7e) are fixed to the apparatus main body 2 side, and only the lipstick 8a, the mascara 8b, the brush 8c or the eye shadow 8d is taken out (the lid 8e is removed). T) can be used. After their use, the original container 7
Return to a to 7d (close lid 8e).

Next, a first embodiment of the EL display device of the present invention will be described. FIG. 3 is a first embodiment in which the EL display device of the present invention is applied to a full-color EL display, and is a plan view showing a state where a second substrate is removed.
FIG. 4 is a cross-sectional view taken along line B-B in FIG. 3 when the second substrate is provided.
It is sectional drawing in the B line.

The EL display shown in these figures (EL display)
The display device 9 is a full-color EL display using EL emission (Electro Luminescence).

As shown in these figures, the EL display 9 has a transparent first substrate 91 and a transparent second substrate 9.
2, a plurality of strip-shaped electrodes (cathodes) 93, a plurality of strip-shaped electrodes (anodes) 94, a plurality of red (R) light-emitting first light-emitting layers (red light-emitting organic EL) 951, a plurality of Green (G)
Color-emitting second light-emitting layer (green light-emitting organic EL) 952
A plurality of blue (B) light-emitting third light-emitting layers (blue light-emitting organic EL) 953 and a seal portion 96. The electrodes 93 and 94 and the light emitting layer 9 in FIGS.
The numbers of 51, 952 and 953 are each smaller for convenience of illustration.

The substrate 92 is located on the display surface side (upper side in FIG. 4), and the substrate 91 is located on the side opposite to the display surface (lower side in FIG. 4).

The substrates 91 and 92 are made of, for example, various kinds of transparent glass and various kinds of transparent resin.

A metal thin film 97 is formed on the lower side of the substrate 91 in FIG. 4, that is, on the side opposite to the display surface.

The upper surface 971 of this metal thin film 97 in FIG.
Has a mirror surface. Light incident from the display surface side (upper side in FIG. 4) is reflected by the surface 971 of the metal thin film 97.

The metal thin film 97 is not particularly limited as long as it can form a mirror surface, and can be made of, for example, aluminum (particularly, a deposited aluminum film).

Each electrode 93 is formed on the upper side of the substrate 91 in FIG. The electrodes 93 are arranged at equal intervals in the vertical direction in FIG.

Each electrode 93 is made of, for example, Al--Li, Mg
In or the like. A predetermined light emitting layer of the light emitting layers 951, 952, and 953 is formed on the upper side in FIG. 4 of each electrode 93, respectively.

In this case, the light emitting layers 951, 952 and 9
Reference numerals 53 are arranged in this order from the upper side to the lower side in FIG.

The light emitting layers 951, 952 and 953 are arranged in the display area.

Each of the light emitting layers 951, 952 and 953 is
It is mainly composed of an organic light emitting material. In this case, the light emitting layer 9
51 is made of, for example, an organic light emitting material that emits red light,
The light emitting layer 952 is made of, for example, a green light emitting organic light emitting material, and the light emitting layer 953 is made of, for example, a blue light emitting organic light emitting material.

On the upper side in FIG. 4 of each of the light emitting layers 951, 952 and 953, a plurality of electrodes 94 are formed, which are arranged at regular intervals (in the horizontal direction in FIG. 3) so as to be orthogonal to them. .

Each electrode 94 is made of, for example, ITO. A substrate 92 is disposed on the upper side of the substrate 91 in FIG. 4 with a predetermined gap therebetween, and these are joined (adhered) by a seal portion 96.

The seal portion 96 is made of, for example, various resins such as a thermosetting resin and an ultraviolet curable resin.

In the EL display 9, as shown in FIG. 3, the light emitting layer at the intersection of the electrode 93 and the electrode 94 forms the minimum unit of a pixel. Then, one pixel is constituted by the three minimum units of the light emitting layers 951, 952 and 953.

As described above, in the display area, the pixels are arranged in a matrix, and a light emitting section is constituted by an aggregate of the pixels arranged in the matrix.

In the present invention, for example, an electron transport layer or a hole transport layer may be provided. Thereby, carriers can be injected efficiently.

Next, the operation of the EL display 9 will be described. When an electronic image (still image, moving image) is displayed on the screen (display surface) of the EL display 9, the electrodes 93 and 94 corresponding to predetermined pixels are displayed based on the image data.
A DC voltage of a predetermined magnitude is applied between the steps. That is, a predetermined pixel is energized.

As a result, electrons and holes (holes) are injected into a portion of the light emitting layer where an electric field is generated by applying the DC voltage, and the portion emits light, and a full-color electronic image (still image, moving image) is obtained. It is formed. That is, the electronic image is displayed on a screen (display surface).

In this case, the light from each pixel is
It is emitted not only on the upper side in FIG. 4 but also on the lower side. The light emitted downward passes through the electrode 93 and the substrate 91, respectively, and is reflected on the surface 971 of the metal thin film 97. The reflected light is transmitted through the substrate 91, the electrode 93, the light emitting layers 951, 952,
953, the electrode 94, and the substrate 92, respectively, and exit from the display surface side.

As a result, the brightness of the electronic image is almost doubled, and light can be effectively used.

Further, the metal thin film 97 functions as a light-shielding plate, so that light can be prevented from leaking from the back surface side of the EL display 9.

Light incident from the display surface side (upper side in FIG. 4) is applied to the substrate 92, the electrode 94, the light emitting layers 951, 952,
953, the electrode 93, and the substrate 91, respectively, and are reflected on the surface 971 of the metal thin film 97.
The electrode 93, the light emitting layers 951, 952, 953, the electrode 94,
The light passes through the substrates 92 and exits from the display surface side. That is, the reflected light is emitted outward from the display surface.

Therefore, when the electronic image is not displayed on the EL display 9 (when the light is not emitted), when viewed from the display surface side (upper side in FIG. 4), an object (including a living body) on the display surface side is displayed. For example, a reflection image of the face 971 of the metal thin film 97 such as a face of the user can be visually recognized. That is,
This EL display 9 functions as a mirror.

As described above, the EL display 9 has not only the function of the display device but also the function of the mirror. Therefore, the versatility is wide.

In displaying an electronic image, light can be effectively used. In addition, the metal thin film 97 functions as a light-shielding plate, and can prevent light from leaking from the back surface side of the EL display 9.

Further, the structure is as simple as providing the metal thin film 97 on the substrate 91, and therefore, the productivity is good and it is advantageous for mass production.

According to the mobile phone 1, the display unit 41
However, since it has not only the function of the display unit but also the function of the mirror, it is very convenient.

For example, when applying makeup using cosmetics,
When the face is displayed on the display unit 41 and makeup is applied, it is possible to make up while confirming one's face anytime and anywhere without having a separate mirror and without being limited to a place having a mirror such as a toilet. It is convenient.

Further, as compared with a case where a mirror is separately provided in addition to a normal display unit having only the original function of the display unit, there is no need to place a mirror, and therefore, the display unit 41 can be enlarged. For example, space efficiency is improved.

Next, a second embodiment of the EL display device of the present invention will be described. FIG. 5 is a sectional view showing a second embodiment in which the EL display device of the present invention is applied to a full-color EL display. Note that E of the first embodiment described above is used.
The description of the common points with the L display 9 will be omitted, and the main differences will be described.

As shown in the figure, in this EL display (EL display device) 9, the space between the first substrates 91 (intermediate)
Is formed with a metal thin film 97.

According to the EL display 9, the same effects as those of the EL display 9 of the first embodiment can be obtained.

In the present invention, the thickness of the metal thin film 97 on the upper substrate 91 in FIG. 5 may be different from the thickness of the lower substrate 91 in FIG.

In the present invention, the constituent material of the upper substrate 91 in FIG. 5 of the metal thin film 97 may be different from the constituent material of the lower substrate 91 in FIG.

Next, a third embodiment of the EL display device of the present invention will be described. FIG. 6 is a sectional view showing a third embodiment in which the EL display device of the present invention is applied to a full-color EL display. Note that E of the first embodiment described above is used.
The description of the common points with the L display 9 will be omitted, and the main differences will be described.

As shown in the figure, in this EL display (EL display device) 9, a metal thin film 97 is formed on the upper side of the first substrate 91 in FIG. 6, that is, on the display surface side.

Then, on the lower side of the second substrate 92 in FIG.
An electrode (anode) 94 is formed, and a first light emitting layer 951, a second light emitting layer 952, and a third light emitting layer 953 are formed below the electrode 94 in FIG. 6, and the light emitting layers 951, 952, and 953 are formed. In FIG. 6, electrodes (cathodes) 93 are arranged at regular intervals so as to be orthogonal to these.

According to the EL display 9, the same effects as those of the EL display 9 of the first embodiment can be obtained.

The EL display device and the electronic device of the present invention have been described based on the illustrated embodiments. However, the present invention is not limited to these embodiments, and the configuration of each part has the same function. Any configuration can be used.

For example, in the present invention, any configurations of the above embodiments may be appropriately combined. In the present invention, what constitutes a mirror surface is not limited to a metal thin film.

The EL display device of the present invention is not limited to a full-color EL display.
The present invention can be applied to an L display and the like.

Further, the electronic device of the present invention is a portable telephone (P
HS), various communication devices with communication functions such as pagers, mobile devices, portable personal computers (notebook computers, etc.), portable videophones, electronic organizers, radios, and other portable devices. All portable electronic devices such as electronic games, electronic dictionaries, electronic cameras (digital cameras),
Further, the present invention can be applied to a non-portable electronic device.

[0093]

As described above, according to the present invention, not only the function of the display device but also the function of the mirror is provided. Therefore, the versatility is wide.

[Brief description of the drawings]

FIG. 1 shows an electronic device according to the present invention as a mobile phone (portable communication device).
FIG. 4 is a perspective view showing an embodiment when applied to the present invention.

FIG. 2 is a view as seen from the direction of arrow A in FIG.

FIG. 3 is a first embodiment in which the EL display device of the present invention is applied to a full-color EL display,
FIG. 5 is a plan view showing a state where the substrate is removed.

FIG. 4 is a cross-sectional view taken along line B- in FIG. 3 when a second substrate is provided.
It is sectional drawing in the B line.

FIG. 5 is a cross-sectional view showing a second embodiment in which the EL display device of the present invention is applied to a full-color EL display.

FIG. 6 is a sectional view showing a third embodiment in which the EL display device of the present invention is applied to a full-color EL display.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cellular phone 2 Device main body 3 1st housing | casing 31 Input part 32 Microphone 4 2nd housing | casing 41 Display part 42 Speaker 43 Antenna 5 Hinge part 51 Ring member 52 Ring member 53 Ring member 54 Internal space 55 Rib 56 Opening 6 Cartridge 6a hole 6b hole 6c hole 6d hole 7a container 7b container 7c container 7d container 7e container 8a lipstick 8b mascara 8c brush 8d eyeshadow 8e lid 81 knob 9 EL display 91 first substrate 92 second electrode 93 second electrode 93 94 electrode (anode) 951 first light emitting layer 952 second light emitting layer 953 third light emitting layer 96 sealing part 97 metal thin film 971 surface

Claims (9)

[Claims] 1. An EL display device comprising: a transparent substrate provided on a side opposite to a display surface; and a light-emitting portion having an organic light-emitting material and having pixels arranged to emit light when the organic light-emitting material is energized. An EL display device, wherein a mirror surface for reflecting light incident from a display surface side is provided on the substrate. 2. The EL display device according to claim 1, wherein the mirror surface is located on a side opposite to a display surface of the substrate. 3. An EL display device using EL light emission, wherein a mirror surface for reflecting light incident from the display surface side is provided on a side opposite to the display surface, and the reflected light is directed outward from the display surface. An EL display device, which is configured to emit light through a light source. 4. The EL display device according to claim 1, wherein the EL display device is configured to display an electronic image. 5. The EL according to claim 1, wherein, when viewed from the display surface side, in a non-light emitting state, a reflection image of the object on the display surface side on the mirror surface is visible.
Display device. 6. The EL display device according to claim 1, wherein the mirror surface is formed of a metal thin film. 7. The E according to claim 1, wherein
An electronic device comprising an L display device. 8. The electronic device according to claim 7, wherein the electronic device is a portable electronic device. 9. The electronic device according to claim 8, wherein the electronic device is a portable communication device.