JPH0516450U - Display device - Google Patents

Abstract

(57) [Summary] [Object] To provide a display device in which a thin film electroluminescence transparent display is installed inside a laminated glass provided on a windshield of a vehicle and which can display a large image without impairing the visibility. [Structure] A laminated glass 1 having a display provided with transparent insulators 3 and 5 in which a thin-film electroluminescent light-emitting body 4 is sandwiched and electrodes formed by transparent conductive films 2 and 6 provided above and below this insulator. The window glass formed in step 1 was sealed and installed, and a part of the window glass was configured as an image character display device.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a large-sized display device for displaying images and characters, and more particularly to a display device suitable for vehicle-mounted images and characters displayed on a vehicle windshield or the like.

[0002]

[Prior art]

 Conventionally, for example, many in-vehicle image and character display devices shown in FIGS. 3 and 4 have been provided. Fig. 3 is a perspective view showing the vicinity of the driver's seat of the vehicle, and 21 is a CRT display installed on the console 22 inside the vehicle or a display equipped with a liquid crystal display element, which is generally a TV of about 2 to 3 inches. It is similar to the display.

FIG. 4 is a perspective view showing a seat of a vehicle. Reference numeral 31 is a display similar to a television having a display screen of about 2 to 10 inches, and the display 31 includes a front seat and a rear seat. It is installed in the center console 32 provided between them.

As described above, the conventional in-vehicle image or character display device is provided with a display device using a CRT or liquid crystal element, which is the same as that of a television, inside the vehicle, for example, information on vehicle operation or TV broadcasting. Images or characters were displayed during reception or playback of VTR recordings. Moreover, the display device was mounted in a restricted space inside the vehicle by using a dedicated mounting bracket or the like.

[0005]

[Problems to be solved by the device]

 However, in the conventional vehicle-mounted display device, the CRT and the liquid crystal display device were installed in the restricted space inside the vehicle as described above, so that the display screen size was small and it was difficult to see.

Further, since a CRT or a liquid crystal display is used, it is easily affected by vibrations from the vehicle, which causes a failure of the display or shortens the life of the display. There was also.

The present invention has been made in view of the above points, and an object thereof is to solve the drawbacks of the conventional example and to provide a transparent display using thin film electroluminescence on a windshield of a vehicle or the like. It is installed inside laminated glass to provide a large image display device.

[0008]

[Means for Solving the Problems]

 The display device of this invention has a transparent insulator sandwiching a thin film electro luminescence (hereinafter simply referred to as TFEL) light emitter, and electrodes formed by transparent conductive films provided above and below this insulator. A display equipped with the above display, in which the above display is installed by being sealed inside a wind glass formed of laminated glass, and a part of the wind glass is configured as an image and character display.

Further, the electrode formed of the transparent conductive film may be formed of indium tin oxide material.

[0010]

[Action]

 A display using a TFEL display element sandwiches a light-emitting body formed of a transparent member between a transparent first insulator and a second insulator, and a transparent member is provided above and below the first and second insulators. It is an indicator having a general structure including an electrode formed of a bright conductive film.

This TFEL display uses, for example, zinc sulfide (ZnS) or cadmium sulfide (CdS) as an effective base material of the above-mentioned light-emitting body, while 4% is used for the first and second insulators. This TFEL display can be produced by using thin film technology such as vacuum deposition, sputtering and CVD using silicon nitride (Si ₃ N ₄ ) etc. and using tin oxide indium and ITO (InSnO) as electrodes. Is a transparent display with good transparency when it is not displaying images and characters, and can operate as an image and characters display by driving the electrodes of the display.

By encapsulating this transparent display inside the window glass made of laminated glass, it is possible to form an arbitrary large-sized transparent display device. Moreover, it is possible to form an image and character display device which is sealed inside the laminated glass to protect the display from moisture and protect it against moisture.

Further, by forming the laminated glass on the windshield, the rear glass, the side glass, or the like of the vehicle, it is possible to form an on-vehicle image and character display device of any size, and it is possible to improve the operation of the vehicle. Necessary information, image information such as TV and VTR, and text information can be displayed on a large display device.

Further, since the transparent display device installed on the laminated glass has good light transmittance, there is no danger in driving the vehicle, and a large-sized vehicle-mounted image display device can be realized.

[0015]

【Example】

 An embodiment of the display device according to the present invention will be described with reference to FIGS. FIG. 1 is a sectional view showing a TFEL transparent display, and FIG. 2 is a perspective view showing a vehicle-mounted display device and a part of a driver's seat of a vehicle.

In the figure, reference numeral 1 denotes a laminated glass which is formed by laminating a laminated glass portion 1a on glass such as window glass. A TFEL luminous body 4 is provided inside the laminated glass 1 and both sides of the luminous body 4 are provided. The light emitting body 4 is sandwiched between the first and second insulators 3 and 5, and the upper transparent electrode 2 and the lower transparent electrode 6 are provided above and below the first and second insulators 3 and 5, respectively. It is a formed transparent display.

The effective base material of the TFEL light-emitting body 4 is constituted by using zinc sulfide (ZnS) or cadmium sulfide (CdS), and the first and second insulators 3, 5 are A transparent display is formed by using silicon tetranitride (S i ₃ N ₄ ) or the like, and using indium tin oxide (InSnO) as a transparent material for the upper and lower transparent electrodes 2 and 6. This TFEL display can be produced by general thin film technology such as vacuum deposition, sputtering and CVD.

The TFEL transparent display generated in this way can display images and characters, but when it is not displaying images and characters, it becomes a transparent display with good transparency, and by the TFEL drive circuit. Image and character display Any image and character can be displayed by driving.

FIG. 2 shows a display device in which the transparent display 11 is installed on a part of a windshield 10 of a vehicle, and 12 is a drive for an image and character display 11 provided on a console 13 inside the vehicle. It is a controller to drive.

Since the TFEL display 11 can be formed to have a thickness of about 1 to 5 μm, the laminated glass 1 is formed so that it can be installed anywhere on the windshield 10 of the vehicle as shown in the figure. A display 11 can be installed.

As described above, when the display 11 is installed on the windshield 10 of the vehicle, the drive circuit of the controller 12 is restricted so that the image cannot be displayed, for example, during driving while driving the vehicle safely. When the vehicle is stopped, images and characters can be displayed to receive and display various information and TV broadcasts.

As described above, by installing the TFEL display device 11 on the windshield 10 of the vehicle, it is possible to realize a display device of any size as an image and character display device. The display contents of the display 11 can be clearly seen and confirmed no matter where the person is. Further, it may be installed on the rear windshield or the side windshield instead of the windshield 10 of the vehicle.

Further, since the TFEL display 11 is made of a transparent material and has a transmittance of about 70% or more, safe driving is guaranteed without impairing the visibility of the vehicle.

The TFEL display 11 provided on the vehicle windshield 10 can display vehicle operation information, such as a speedometer, mileage, and temperature inside the vehicle. Also, a navigation system display, etc. Can be done.

Furthermore, by installing a camera at a specific location on the vehicle, the state of the vehicle behind the rearview mirror can be displayed and the area information can be confirmed at the intersection by superimposing it on the actual scenery of the navigation system. It is possible to realize a wide variety of display functions, and it is possible to display a wider range of vehicle information.

Although the above description has been made of the vehicle-mounted image and character display device, the display device of the present invention is not limited to a vehicle, and can be applied to all glass surfaces that require information display, such as an aircraft, It can be used in a very wide range of applications such as displaying advertisements on the windshield of ships, trains, or shops.

[0027]

[Effect of the device]

 As described above, in the display device according to the present invention, since the transparent display can be installed on any windshield, it is possible to perform a large-scale display that is not limited to the mounting space, and to display a wide variety of information. Also, it can be displayed in characters, which has the effect of making it easy to confirm the display.

Further, there is an effect that it can be widely used, and particularly when it is used as an on-vehicle image and character display device, since the display element is a TFEL solid-state light emitter, vibration and heat It is possible to realize a stable display device that is not easily affected, and because the TFEL display is sealed and formed on the laminated glass, it is possible to completely protect it against moisture and to use an oil with a high light transmittance. There is a great merit that it is possible to seal materials that are difficult to absorb moisture such as.

[Brief description of drawings]

FIG. 1 is a sectional view showing a structure of a thin film electroluminescence display device of a display device of the present invention.

FIG. 2 is a perspective view of the inside of the vehicle of the main part when the display unit of FIG. 1 is implemented as a vehicle-mounted display device.

FIG. 3 is a perspective view of the interior of a vehicle showing a conventional vehicle-mounted display device.

FIG. 4 is a perspective view of the inside of a vehicle showing another conventional vehicle-mounted display device.

[Explanation of symbols]

 1 Laminated glass 1a Laminated glass part that produced laminated glass 2 Upper transparent electrode 3 First insulator 4 Light emitter 5 Second insulator 6 Lower transparent electrode 10 Vehicle windshield 11 TFEL display 12 TFEL display controller 13 Vehicle console

Claims (2)

[Scope of utility model registration request] 1. A display comprising a transparent insulator sandwiching a thin-film electroluminescent light-emitting body, and electrodes formed on the upper and lower sides of the insulator by transparent conductive films, the display comprising: A display device characterized by being installed inside a wind glass formed of glass in a sealed manner and configuring a part of the wind glass as an image and character display. 2. The display device according to claim 1, wherein the electrode formed of the transparent conductive film is formed of an indium tin oxide material.