JP2000159023A - Mirror and mirror device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the appearance by providing an electroluminescence element having a transparent electrode, a light emitting layer and a back plate, which are formed on the rear surface side of a translucent substrate. SOLUTION: A mirror 15 comprises a glass substrate 18 (translucent substrate) and a reflecting layer 19 formed on the back surface side of the glass substrate 18. The reflecting layer 19 consists of a metal layer such as aluminum, and the backward scene of a vehicle is reflected by the reflecting layer 19 of the mirror 15, so that a driver visually can confirm other vehicles running in the rear. The mirror 15 has an electroluminescence element 20, and the time is displayed by the electroluminescence element 20. The electroluminescence element 20 consists of a transparent electrode 21, an insulating layer 22, a light emitting layer 23 and the reflecting layer 19, which are formed on the glass substrate 18. The reflecting layer 19 is also formed on the back surface side of the light emitting layer 23 to act as the back plate of the electroluminescence element 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mirror and a mirror device, and more particularly, to a mirror and a mirror device having an electroluminescent display element called electroluminescence.

[0002]

2. Description of the Related Art Conventionally, there is a vehicle rearview mirror device 1 as shown in FIGS. Such a vehicle rearview mirror device 1 has a fluorescent display tube 3 disposed behind a mirror 2,
It is configured such that the driver (observer) of the vehicle can visually recognize the time displayed by the fluorescent display tube 3. The mirror 2 has a reflection layer 5 made of a metal thin film formed on the rear surface of a glass substrate 4 by a vapor deposition method. The terminal 6 of the fluorescent display tube 3 is connected to a circuit board 7 by soldering, and a drive circuit (not shown) for driving the fluorescent display tube 3 is provided on the circuit board 7.
Is installed. The fluorescent display tube 3 displays the time by appropriately turning on or off the segment 8.

[0003]

A rectangular opening 9 is provided at a position of the mirror 2 which faces the fluorescent display tube 3.
An observer visually recognizes the fluorescent display tube 3 from the opening 9. However, there was a problem that the opening 9 was conspicuous and the appearance of the vehicle mirror device 1 was poor. In other words, when the fluorescent display tube 3 is viewed to check the time, not only the segments 8 but also the openings 9 are visually observed, which is not preferable in appearance. In order to solve this problem, as shown in FIG. 7, the mirror 2 is not provided with the opening 9 but the reflection layer 5 is formed except for the portion facing the fluorescent display tube 3 so that the segment 8 of the fluorescent display tube 3 is formed. It is conceivable that the emitted light is transmitted through the transmission unit 10 and reaches the observer. However, the appearance is slightly improved, but the boundary 11
(Boundary of the transmissive part 10) is visually recognized, which is not preferable in the appearance of the vehicle mirror device 1. Also, Japanese Patent Application Laid-Open No. 7-266
As in the mirror device disclosed in Japanese Patent Application Laid-Open No. 928/1998 and Japanese Patent Application Laid-Open No. H10-297375, it is one idea to dispose a display element behind the half mirror. ) Is not preferable because the display is darkened in accordance with ()). SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a mirror and a mirror device which have good appearance and high commercial value.

[0004]

According to another aspect of the present invention, there is provided a mirror having a light-transmitting substrate and a reflective layer formed on a rear surface side of the light-transmitting substrate. It has an electroluminescent display element having a transparent electrode, a light emitting layer, and a back electrode formed on the rear surface side of the substrate.

Further, in the present invention, the back electrode is made of the reflective layer.

The present invention also provides a light-transmitting substrate, a reflective layer formed on the rear surface of the light-transmitting substrate, a transparent electrode, a light-emitting layer, and a rear surface formed on the rear surface of the light-transmitting substrate. A mirror having an electroluminescent display element having an electrode, a circuit board on which a drive circuit for driving the electroluminescent display element is mounted, and a connection member connecting the circuit board and the electroluminescent display element, It has.

In the present invention, the back electrode is formed of the reflective layer.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A mirror has a light-transmitting substrate and a reflective layer formed on the rear surface thereof. The mirror has a transparent electrode, a light-emitting layer, and a back electrode formed on the rear surface of the light-transmitting substrate. Having an electroluminescent display element having The back electrode of the electroluminescent display element is formed of a reflective layer.

[0009] The mirror device includes a mirror described above, a circuit board on which a drive circuit for driving the electroluminescent display element is mounted,
A connection member for connecting the circuit board and the electroluminescent display element,
Is housed in the housing. The connection member has a first terminal portion connected to the transparent electrode and a second terminal portion connected to the back electrode.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a vehicle interior mirror device will be described below with reference to the accompanying drawings. 1 to 3 show a first embodiment. FIG. 1 is a sectional view of a main part of a vehicle rearview mirror device, and FIGS. 2 and 3 are front views.

The vehicle rearview mirror device 12 includes an arm 13
Accommodates a mirror 15, a flexible wiring member 16 (connection member) and a circuit board 17 in a housing 14 integrally formed, and the arm 13 is adhered to a windshield of a vehicle. The mirror 15 has a glass substrate 18 (translucent substrate) and a reflection layer 19 formed on the rear surface side of the glass substrate 18. The reflection layer 19 is made of a metal layer such as aluminum.
Is reflected by the reflective layer 19, and the driver visually recognizes another vehicle or the like traveling behind by the mirror 15.

The mirror 15 has an electroluminescent display element 20, and the electroluminescent display element 20 displays time. The electroluminescent device 20 includes a transparent electrode 21, an insulating layer 22, a light emitting layer 23, and a reflective layer 19 formed on a glass substrate 18. The transparent electrode 21 is made of ITO (indium tin oxide) formed on the rear surface of the glass substrate 18 by an evaporation method.
The light emitting layer 23 is formed by sequentially stacking a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer. The reflection layer 19 is also formed on the rear surface side of the light emitting layer 23 and functions as a back electrode of the electroluminescent display device 20. The insulating layer 22 prevents a short circuit between the transparent electrode 21 and the back electrode (reflective layer 19). Reference numeral 24 denotes a sealing plate, and an insulating oil 25 is filled between the reflection layer 19 and the sealing glass 24.

The flexible wiring member 16 is used for the electroluminescent display element 2.
0 and the circuit board 17. The flexible wiring member 16 has a first terminal portion 26 and a second terminal portion 27, and the first terminal portion 26 is electrically connected to the transparent electrode 21 by an anisotropic conductive film (not shown). Second terminal 27
Are conducted to the back electrode (reflection layer 19). Circuit board 17
A wiring pattern made of copper foil is formed on the front surface of the circuit board 17, and the flexible wiring member 16 is connected to the circuit board 17 via a connector 28. The drive circuit 2 is mounted on the circuit board 17.
The driving circuit 29 drives the electroluminescent display element 20. The housing 14 has a front housing 14a and a rear housing 14b,
The front housing 14a and the rear housing 14b are locked by locking claws (not shown). An opening 14c is provided in the front housing 14a.
The size of 4c matches the visible range S of the mirror 15.

The user turns on / off a switch (not shown) to display / hide the time (the electroluminescent display element 20).
Switch on / off). Transparent electrode 21, insulating layer 22
Since the light-emitting layer 23 is transparent, the mirror 15 looks like a normal mirror without any display function when the switch is off (see FIG. 2), and when the switch is turned on, the time appears to rise (see FIG. 2). (See FIG. 3).

The glass substrate 18 does not have the opening 9 described in the conventional example, and the reflection layer 19 is formed at least over the entire visible range S. Since there is no boundary 11 described in the conventional example, the vehicle interior mirror The appearance of the device 12 is good. Although the reflection layer 30 made of silver and the back electrode 31 made of aluminum may be separately provided as in the second embodiment shown in FIG. 4, the electroluminescent display element 2 may be provided as in the first embodiment.
It is preferable that the reflective layer 20 also serving as the back electrode of 0 is formed of the same material, and the boundary between the reflective layer 30 and the back electrode 31 is eliminated.

Although the light-transmitting substrates of the first and second embodiments are glass substrates, they may be light-transmitting resin substrates, for example. Further, the electroluminescent display element 20 displays time, but may display, for example, a vehicle speed or an engine speed. Although the first and second embodiments are directed to a vehicle interior mirror device, it is needless to say that the present invention can be applied to, for example, a vehicle door mirror device, a large mirror for a barber shop, and the like.

[0017]

According to the present invention, there is provided a mirror having a light-transmitting substrate and a reflective layer formed on the rear surface of the light-transmitting substrate, wherein the transparent electrode is formed on the rear surface of the light-transmitting substrate. It has an electroluminescent display element having a light emitting layer and a back electrode, and the glass substrate has no opening and the mirror has a good appearance.

Further, in the present invention, the back electrode is made of the reflective layer, and there is no boundary between the back electrode and the reflective layer, and the appearance is further improved.

Further, the present invention provides a light-transmitting substrate, a reflective layer formed on the rear surface of the light-transmitting substrate, a transparent electrode formed on the rear surface of the light-transmitting substrate, a light-emitting layer, and a back surface. A mirror having an electroluminescent display element having an electrode, a circuit board on which a drive circuit for driving the electroluminescent display element is mounted, and a connection member connecting the circuit board and the electroluminescent display element, And the glass substrate has no opening and has a good appearance.

Further, according to the present invention, the back electrode is made of the reflective layer, and there is no boundary between the back electrode and the reflective layer, and the appearance is further improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a vehicle interior mirror device according to a first embodiment of the present invention.

FIG. 2 is a front view of the embodiment.

FIG. 3 is a front view of the embodiment.

FIG. 4 is a sectional view of a main part showing a second embodiment of the present invention.

FIG. 5 is a front view of a vehicle interior mirror device showing a conventional example.

FIG. 6 is a sectional view of a main part showing the conventional example.

FIG. 7 is a sectional view of a main part showing another conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 12 vehicle rearview mirror device (mirror device) 14 housing 15 mirror 16 flexible wiring member (connection member) 17 circuit board 18 glass substrate (translucent substrate) 19 reflective layer 20 electroluminescent display element 21 transparent electrode 23 light emitting layer 29 Drive circuit 30 Reflective layer 31 Back electrode

Claims (4)

[Claims] 1. A mirror having a light-transmitting substrate and a reflective layer formed on the rear surface of the light-transmitting substrate, wherein the transparent electrode, the light-emitting layer, and the rear surface are formed on the rear surface of the light-transmitting substrate. A mirror comprising an electroluminescent display element having electrodes. 2. The mirror according to claim 1, wherein said back electrode is made of said reflective layer. 3. A light-transmitting substrate, a reflective layer formed on the rear surface of the light-transmitting substrate, a transparent electrode, a light-emitting layer, and a rear electrode formed on the rear surface of the light-transmitting substrate. A mirror having an electroluminescent display element, a circuit board on which a drive circuit for driving the electroluminescent display element is mounted, a connection member connecting the circuit board and the electroluminescent display element,
A mirror device comprising: 4. The mirror device according to claim 3, wherein
The mirror device, wherein the back electrode is made of the reflective layer.