JP2001305988A - Goggle type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a goggle type display device having EL display devices. SOLUTION: This goggle type display device has a pair of the EL display devices and a pair of optical elements. The display device controls display contents by the video data built into a memory card and changes the display contents by replacing the memory card.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD OF THE INVENTION

[0002] The present invention relates to a goggle-type display device, and more particularly to a goggle-type display device in which power consumption is reduced and weight is reduced.

[0003]

2. Description of the Related Art In recent years, goggle type display devices which are worn on the head and used by users have become widespread. This type of device is also called a head-mounted display (HMD), and includes an audio playback unit, an image display unit such as a liquid crystal panel, a prism for enlarging a displayed image and guiding it to the eyes, a lens,
An optical element including a mirror or the like and a control unit are provided. The control unit has a function of receiving information from a device that transmits information desired by the user, supplying necessary signals to the image display unit and the audio reproduction unit, and providing the user with information from the image display unit and the audio reproduction unit. Have. For the image display unit, a transmissive liquid crystal panel with a backlight is often used to provide a high-luminance image. This allows the user to view a large screen with a small device even in a limited space.

Referring to FIG. The image displayed on the liquid crystal panel of 1502 is enlarged through the lens of 1501 and is directly projected on the retina in the eyeball of the user of 1503. At this time, the liquid crystal panel 1502 needs to be provided with polarizing plates 1505A and 1505B, and a backlight 1504 that uniformly shines in the plane must be used as a light source.

[0005] In addition, a goggle type display device which can be used while moving can be seen from the gap between the display and the face for safety, or an image display unit and a display in front of the user for safety. Some are equipped with a see-through function that allows the scenes to be seen overlapping.

[0006]

The goggle type display device is required to be reduced in size and weight since the user wears it on the head and uses it. In addition, there is a need for further lowering power consumption due to portable use. In addition, users use a wide variety of purposes, such as watching powerful videos like watching movies, or connecting an information terminal such as a personal computer to see detailed characters. It is necessary to simply switch the functions of the goggle type display device according to the purpose of use.

Therefore, the present invention has been made in view of the above problems, and has as its object to provide a goggle type display device which solves the above problems.

[0008]

The present invention employs the following means in order to solve the above-mentioned problems. The goggle-type display device of the present invention includes an optical element, a control unit, and a self-luminous EL panel that can be freely attached to and detached from the control unit. The EL panel is an organic EL display (OE)
LD: Organic EL Display or organic light emitting diode (OLED: Organic Light Emitting D)
By using a self-luminous EL panel, unlike a liquid crystal panel, a high-luminance image can be provided to a user without using a backlight. Further, since no backlight is used, low power consumption can be achieved.

When a liquid crystal panel is used, it is necessary to provide an instrument for fixing the relative positions of the optical element, the liquid crystal panel, and the backlight so as not to shift. When an EL panel is used, the optical element and the EL panel are simply fixed so that they do not shift. Therefore, the shift is unlikely to occur, and the weight of the backlight can be reduced as compared with the use of a liquid crystal panel. Can be lightened.

In the goggle type display device of the present invention, a memory card can be mounted on the main body, and the contents of an image can be changed by replacing the card.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

In FIG. 1, reference numeral 100 denotes a goggle type display device main body, 102L and 102R denote EL panels, 103
L and 103R are EL panel insertion ports, and 106L and 106R are earphones. User can use EL panel
It is attached to the goggle type display device body from the panel insertion opening.
The goggle type display device has a function of receiving information desired by a user from a device transmitting the information, supplying necessary signals to an EL panel and an earphone, and providing the user with information from the EL panel and an earphone. Is assumed.

FIG. 2 is a sectional view of a portion A in FIG. 1 when an EL panel is mounted on a goggle type display device main body. 10
1R is a lens, 104R is a user's eyeball, and 110R is a transmission window for observation. The image displayed on the EL panel passes through the lens and is projected directly onto the retina in the user's eyeball. Note that the A 'portion has the same structure as the A portion.

Open only when attaching / detaching the EL panel 11
A 9R EL panel insertion shutter is provided. Since light is not incident from the EL panel insertion port by the insertion port shutter, the user does not have any effect when viewing an image.

In FIG. 3, reference numeral 300 denotes an EL panel main body;
Reference numeral 301 denotes a pixel portion, 302L and 302R denote gate side driving circuits, 303 denotes a source side driving circuit, and 304 denotes a connection port. The connection port 304 has a structure that can be easily attached to and detached from a point for supplying a necessary signal to the EL panel.

An EL element has a structure in which an EL layer is sandwiched between a pair of electrodes (anode and cathode).
It has a laminated structure. Representatively, the “hole transport layer /” proposed by Tang et al. Of Kodak Eastman Company
Light-emitting layer / Electron transport layer ". This structure has a very high luminous efficiency, and almost all EL panels currently under research and development adopt this structure.

In addition, a hole injection layer / hole transport layer / light emitting layer / electron transport layer, or a hole injection layer / hole transport layer / light emitting layer / electron transport layer / electron injection layer may be provided on the anode. A structure in which layers are sequentially stacked may be used. The light emitting layer may be doped with a fluorescent dye or the like.

In this specification, all layers provided between a cathode and an anode are collectively called an EL layer. Therefore, the above-described hole injection layer, hole transport layer, light-emitting layer, electron transport layer, electron injection layer, and the like are all included in the EL layer.

Then, a predetermined voltage is applied to the EL layer having the above structure from a pair of electrodes, whereby recombination of carriers occurs in the light emitting layer to emit light. Note that in this specification, emission of an EL element is referred to as driving of the EL element. In this specification, a light-emitting element including an anode, an EL layer, and a cathode is referred to as an EL element.

[0020]

【Example】

An embodiment of the present invention will be described with reference to FIGS.

(Embodiment 1)

Referring to FIG. FIG. 4 is a schematic configuration diagram of the goggle type display device and the controller main body of the present embodiment. In FIG. 4, the EL panel is already mounted on the goggle type display device.

400 is a goggle type display device main body, 401
R and 401L are lenses, 402R and 402L are EL panels, 405L and 405R are illuminance sensors,
406R and 406L are earphones. In the case of a goggle type display device without an audio reproduction unit, an earphone is not necessary.

411 is a controller body, 412 is a control switch, 413 is an audio input terminal, 414 is a video input terminal, and 415 is a memory card insertion slot.

In the memory card insertion slot 415, a memory card which is a medium in which information such as images, sounds, and environment settings when using the goggle type display device can be inserted. The information recorded on the memory card can be read and operated by operating the control switch 412. By operating the control switch, it is also possible to change the environment setting when using the goggle type display device and save the information on a memory card. The environment setting refers to the brightness and color of the EL panel, the volume of the earphone, and the like. The memory card insertion slot may be provided in the goggle type display device main body.

The controller body has a function of receiving information desired by the user from a device that transmits the information, supplying necessary signals to the EL panel and the earphone, and providing the user with information from the EL panel and the earphone. Suppose you have. The audio input terminal 413 and the video input terminal 414 are for receiving information from a device that outputs information such as images and sounds, and are not particularly limited as long as they have this function.

Although the goggle type display device main body and the controller main body are connected by a connection cable 416, a configuration in which information is transmitted by light or the like as cordless may be adopted.
Further, the functions of the controller main body may be separately incorporated in the goggle-type display device and the goggle-type display device main body, or the goggle-type display device may not entirely include the built-in controller main body.

FIG. 5 is a sectional view of a portion B in FIG. 4 of the goggle type display device of the present embodiment. 403R is an EL panel insertion opening, 404R is a user's eyeball, and 410R is an observation transmission window. The image projected on the EL panel is magnified through the lens, passes through the observation transmission window, and is projected directly onto the retina in the user's eyeball. Note that the portion B ′ in FIG. 4 has the same structure as the portion B.

The shape of the lens and the positional relationship between the lens and the EL panel are such that the contrast of the image displayed by the EL panel is sufficiently maintained, and the enlarged image is provided to the user without being out of focus. If possible, especially the lens shape and the lens and EL as shown in FIG.
It is not limited to the positional relationship with the panel.

The use of the 405R illuminance sensor makes it possible to measure the illuminance of light incident from the outside near the user's eyeball. According to the measured illuminance, E
By automatically adjusting the brightness of the L panel, it is possible to provide an optimum contrast for the user. It is also possible to reduce the power consumption by automatically adjusting the contrast of the EL panel so that the user does not hinder the display of the EL panel. It is also possible to adjust the brightness and the like of the EL panel using the control switch 412 of FIG.

The illuminance sensor and the function that can be realized by using the illuminance sensor need not be provided.

Usually, in an EL panel, it is necessary to provide a polarizing plate between a lens and the EL panel in order to prevent external light from being reflected by a cathode. However, unlike a liquid crystal panel, a goggle type display device to which external light hardly enters does not require the use of a polarizing plate, and does not cause a decrease in luminance due to the use of a polarizing plate.

Further, since the EL panels can be freely replaced, it is possible to select and insert an EL panel suitable for the user's preference and purpose of use.

(Embodiment 2)

Referring to FIG. FIG. 6 is a schematic configuration diagram of a goggle type display device having a see-through function and a controller main body according to the present embodiment. In FIG. 6, the EL panel is already mounted on the goggle type display device.

Reference numeral 600 denotes a goggle type display device main body;
F is an illuminance sensor, and 606R and 606L are earphones. In the present embodiment, transparent windows 607L and 607 for observing a scene in front of the goggle type display device.
R is provided, which is different from the first embodiment. This allows
As shown in FIG. 7A, the user can use the see-through function of simultaneously viewing the scene in front of the goggle type display device and the image displayed on the EL panel enlarged by the lens. The changeover switches 618L and R are
A scene outside the goggle type display device as shown in FIG.
The mode is switched between a mode in which the image displayed on the EL panel enlarged by the lens is simultaneously viewed and a mode in which only the image displayed on the EL panel enlarged by the lens is viewed as shown in FIG. 7B. In the case of a goggle-type display device that does not have a sound reproducing unit, an earphone is not required.

611 is a controller main body, 612 is a control switch, 613 is an audio input terminal, 614 is a video input terminal, and 615 is a memory card insertion slot.

Into the memory card insertion slot 615, a memory card as a medium in which information such as images, sounds, and environment settings when using the goggle type display device can be inserted. The information recorded on the memory card can be read and operated by operating the control switch 612. By operating the control switch, it is also possible to change the environment setting when using the goggle type display device and save it on the memory card. The environment setting refers to the brightness and color of the EL panel, the volume of the earphone, and the like. The memory card insertion slot may be provided in the goggle type display device main body.

The controller body has a function of receiving information desired by a user from a device transmitting the information, supplying necessary signals to the EL panel and the earphone, and providing the user with information from the EL panel and the earphone. Suppose you have. The audio input terminal 613 and the video input terminal 614 are for receiving information from a device that outputs information such as images and sounds, and are not particularly limited as long as they have this function.

Although the goggle type display device main body and the controller main body are connected by the connection cable 616, a configuration in which information is transmitted by light or the like as cordless may be adopted.
Further, the functions of the controller main body may be separately incorporated in the goggle-type display device and the goggle-type display device main body, or the goggle-type display device may not entirely include the built-in controller main body.

FIG. 8 is a sectional view of a portion C in FIG. 6 of the goggle type display device of this embodiment. In FIG. 8, 60
1Ra and 601Rb are lenses, 602R is an EL panel,
604R is a user's eyeball, and 611R is a transmission window for observation. The scene in front is a 607R transparent window, 617R shutter, 601Rb lens, 608R half mirror,
It can be observed through a lens of 601Ra and a transparent window for observation of 610R. The image projected on the EL panel is a 601Rb lens, 608R half mirror,
It is enlarged after passing through a 1Ra lens. Again, 601
After passing through the lens of Ra and reflected by the half mirror of 608R, it is projected onto the retina in the user's eyeball. The C ′ portion in FIG. 6 has the same structure as the C portion. The shutter for the EL panel insertion opening is not shown.

The flare prevention frame of the 609R is installed so that harmful light due to external light does not enter the inside of the apparatus.
Even if it is integrated with the goggle type display device main body 600,
It may be configured separately.

The shutter 617R is operated by a changeover switch 618R shown in FIG. Its function is to block light incident from the transparent window from entering the lenses 601Ra and 601Rb and the observation transmission window 610R, and any light having such a function may be used.

The function of a changeover switch may be added to the control switch 612 of FIG.

In FIG. 6, the switching switches for 618L and 618R correspond to the shutters for the left and right eyes, respectively. However, one switching switch may be used to operate two shutters simultaneously.

The shape of the optical element and the positional relationship between the optical element and the EL panel can realize the see-through function as described above, maintain the contrast of the image displayed on the EL panel sufficiently, and keep the image in focus. The shape and arrangement are not particularly limited to those shown in FIG.

By using the illuminance sensor 605F, it is possible to measure the illuminance at the position where the user is present, and by using the illuminance sensor 605R, it is possible to measure the illuminance of light incident from the outside near the user's eyeball. By comparing these two illuminances, it is possible for the user to automatically adjust the contrast of the EL panel optimally for viewing the front view and the EL panel simultaneously. It is also possible to reduce the power consumption by automatically adjusting the contrast of the EL panel so that the user does not hinder the display of the EL panel. It is also possible to adjust the brightness and the like of the EL panel using the control switch 612 of FIG.

The illuminance sensor and the function that can be realized by using the illuminance sensor need not be provided.

(Embodiment 3)

Referring to FIG. FIG. 9 is a schematic configuration diagram of a goggle type display device having a see-through function according to the present embodiment.

Reference numeral 900 denotes a goggle type display device main body;
Is an EL panel, 903L and 903R are EL panel insertion openings, 905F is an illuminance sensor, 906R and 906
L is an earphone. In the case of a goggle type display device without an audio reproduction unit, an earphone is not necessary. The goggle type display device has a function of receiving information desired by a user from a device transmitting the information, supplying necessary signals to an EL panel and earphones, and providing the user with information from the EL panel and earphones. Suppose you have.

In this embodiment, unlike Embodiments 1 and 2,
The 902 EL panel is inserted only into the 903L EL panel insertion slot.

FIG. 10A is a sectional view of a portion D in FIG. 9 of the goggle type display device of this embodiment, and FIG. 10B is a sectional view of a portion D ′. The shutter for the EL panel insertion opening is not shown.

In FIG. 10A, a user's eyeball 90 is shown.
For 4L, a mode in which a scene outside the goggle type display device and an image displayed on the EL panel enlarged by a lens as shown in FIG. 7A can be simultaneously viewed, and FIG. EL expanded by lens as in)
It is possible to provide two modes in which only the image displayed on the panel can be viewed. Switching between these two modes can be performed by operating the shutter 917L with the switch 918L in FIG.

In FIG. 10B, the user's eyeball 90
For 4R, a mode in which only a scene outside the goggle type display device can be seen as shown in FIG.
It is possible to provide a mode in which nothing can be seen like. Switching between these two modes can be performed by operating the 917R shutter with the changeover switch 918R in FIG.

By providing images in various modes to the user's eyeballs 904L and R, it is possible to cope with a case where the user wants to more clearly confirm the scene outside the goggle type display device. .

The insertion opening of the EL panel can be freely selected according to the user's preference. Also, the EL panel insertion port 903 in FIG.
It is assumed that the same function can be realized by driving only one of the EL panels even when the EL panel is mounted on both L and R.

The shapes of the lens and the half mirror and E
The arrangement relationship with the L panel is not particularly limited to this shape and arrangement as long as the above-described see-through function can be realized, the contrast of the image displayed by the EL panel is sufficiently maintained, and the image is not out of focus. .

This embodiment can be combined with the second embodiment.

(Example 4)

In this embodiment, an image processing function which may be provided in the goggle type display device or the controller body described in the first, second and third embodiments will be described.

The goggle type display device or the controller main body has a function of processing image information received from a device or a memory card for transmitting image information so that a user can view the image information three-dimensionally and transmitting the processed image information to the goggle type display device. May be. This is possible if the left and right images are separately photographed from different directions and displayed. Further, there has been proposed a method of performing display by selectively using complementary colors. There is no particular limitation on a method capable of stereoscopic viewing. As a result, the user can appreciate an image having a more realistic feeling. Furthermore, the function can be selected by using a control switch.

(Embodiment 5)

In this embodiment, an image processing function which may be provided in the goggle type display device or the controller body described in the first, second and third embodiments will be described.

The goggle type display device or the controller body has a function of processing image information received from a device or a memory card for transmitting image information so that white and black are inverted and transmitting the processed image information to the goggle type display device. Is also good. As a result, power consumption can be reduced as compared with the case where an original image is displayed. Furthermore, the function can be selected by using a control switch.

(Embodiment 6) In this embodiment, an example in which an EL (electroluminescence) panel used in the present invention will be described. Note that FIG. 11A shows the EL of the present invention.
FIG. 11B is a top view of the panel, and FIG. 11B is a cross-sectional view thereof.

In FIGS. 11A and 11B, 4001
Denotes a substrate, 4002 denotes a pixel portion, 4003L and 4003
R denotes a gate-side drive circuit and 4004 denotes a source-side drive circuit. Each drive circuit reaches a connection port 4006 via a wiring 4005 and is connected to an external device.

At this time, the first sealant 4101 is formed so as to surround the pixel portion 4002, the gate side driver circuits 4003L and 4003R, and the source side driver circuit 4004.
Cover material 4102, filler material 4103, and second seal material 4
104 are provided.

FIG. 11B corresponds to a cross-sectional view taken along line EE ′ of FIG. 11A, and a driving TFT (here, an n-channel driving circuit) included in the source side driving circuit 4004 is provided on a substrate 4001. And a current control TFT (TFT controlling current to an EL element) 42 included in the pixel portion 4002 and a TFT 4201.
02 is formed.

In this embodiment, a p-channel TFT or an n-channel TFT manufactured by a known method is used as the driving TFT 4201, and a p-channel TFT manufactured by a known method is used as the current control TFT 4202. Used. The pixel portion 4002 includes a current control TFT 42.
A storage capacitor (not shown) connected to the gate 02 is provided.

Driving TFT 4201 and Pixel TFT 420
An interlayer insulating film (flattening film) 43 made of a resin material is formed on
01 is formed thereon, and a pixel electrode (anode) 4302 electrically connected to the drain of the pixel TFT 4202 is formed thereon. As the pixel electrode 4302, a transparent conductive film having a large work function is used. As the transparent conductive film, a compound of indium oxide and tin oxide, a compound of indium oxide and zinc oxide, zinc oxide, tin oxide, or indium oxide can be used. Further, a material obtained by adding gallium to the transparent conductive film may be used.

Then, an insulating film 4303 is formed on the pixel electrode 4302, and the insulating film 4303 is formed on the pixel electrode 430.
2, an opening is formed. In this opening, an EL (electroluminescence) layer 4304 is formed on the pixel electrode 4302. For the EL layer 4304, a known organic EL material or inorganic EL material can be used. As the organic EL material, there are a low-molecular (monomer) material and a high-molecular (polymer) material, and either may be used.

As a method for forming the EL layer 4304, a known evaporation technique or coating technique may be used. The EL layer may have a stacked structure or a single-layer structure by freely combining a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, or an electron injection layer.

On the EL layer 4304, a cathode 4305 made of a light-shielding conductive film (typically, a conductive film containing aluminum, copper, or silver as a main component or a laminated film of these and another conductive film) is provided. It is formed. In addition, the cathode 4305
It is desirable that moisture and oxygen existing at the interface between the EL layer and the EL layer 4304 be eliminated as much as possible. Therefore, the two layers are continuously formed in a vacuum or the EL layer 4304 is formed in a nitrogen or rare gas atmosphere, and the cathode 430 is not exposed to oxygen or moisture.
5 is required. In this embodiment, the above-described film formation is made possible by using a multi-chamber type (cluster tool type) film formation apparatus.

The cathode 4305 is electrically connected to the wiring 4005 in a region indicated by 4306. The wiring 4005 is a wiring for applying a predetermined voltage to the cathode 4305, and is electrically connected to the connection port 4006 via the anisotropic conductive film 4307.

As described above, the pixel electrode (anode) 43
02, an EL element including the EL layer 4304 and the cathode 4305 is formed. This EL element has a first sealing material 410
Are surrounded by a cover material 4102 bonded to the substrate 4001 by the first and first seal materials 4101,
3 enclosed.

As the cover material 4102, a glass material, a metal material (typically, a stainless steel material), a ceramic material, and a plastic material (including a plastic film) can be used. As a plastic material, FRP (Fi
Berglass-Reinforced Plast
ics) plate, PVF (polyvinyl fluoride) film, mylar film, polyester film or acrylic resin film. Further, a sheet having a structure in which an aluminum foil is sandwiched between PVF films or mylar films can also be used.

However, when the direction of light emission from the EL element is directed toward the cover material, the cover material must be transparent. In that case, a transparent material such as a glass plate, a plastic plate, a polyester film or an acrylic film is used.

As the filler 4103, an ultraviolet curable resin or a thermosetting resin can be used. PVC (polyvinyl chloride), acrylic, polyimide, epoxy resin, silicone resin, PVB (polyvinyl butyral) or EVA (ethylene vinyl) is used. Acetate) can be used. By providing a hygroscopic substance (preferably barium oxide) or a substance capable of adsorbing oxygen inside the filler 4103, deterioration of the EL element can be suppressed.

Further, a spacer may be contained in the filler 4103. At this time, if the spacer is made of barium oxide, the spacer itself can have hygroscopicity. In the case where a spacer is provided, it is also effective to provide a resin film on the cathode 4305 as a buffer layer for relaxing pressure from the spacer.

The wiring 4005 is electrically connected to the connection port 4006 via the anisotropic conductive film 4307. The wiring 4005 transmits a signal transmitted to the pixel portion 4002, the source driver circuit 4004, and the gate driver circuit 4003 to the connection port 4006, and is electrically connected to an external device through the connection port 4006.

In this embodiment, the first sealing material 4101
A second sealing material 4104 is provided so as to cover the exposed portion of the LED and a part of the connection port 4006 to completely shut off the EL element from the outside air. Thus, an EL display device having the cross-sectional structure of FIG.

Embodiment 7 In this embodiment, FIGS. 12A to 12C show an example of a pixel structure which can be used in the pixel portion of the EL display device shown in Embodiment 6 or 8. . In this embodiment, reference numeral 4601 denotes a source wiring of the switching TFT 4602, 4603 denotes a gate wiring of the switching TFT 4602, 4604 denotes a current control TFT, 4605 denotes a capacitor, 4606, and 4608.
Is a current supply line, and 4607 is an EL element.

FIG. 12A shows an example in which the current supply line 4606 is shared between two pixels. That is, it is characterized in that the two pixels are formed to be line-symmetric with respect to the current supply line 4606. In this case, the number of current supply lines can be reduced, so that the pixel portion can have higher definition.

FIG. 12B shows the current supply line 460.
8 is provided in parallel with the gate wiring 4603. Note that in FIG. 12B, the current supply line 4608 and the gate wiring 4603 are provided so as not to overlap with each other.
They can be provided so as to overlap with each other via an insulating film. In this case, the current supply line 4608 and the gate wiring 4603 can share an occupied area, so that the pixel portion can have higher definition.

FIG. 12C shows that a current supply line 4608 is provided in parallel with the gate wiring 4603 in the same manner as the structure of FIG. 12B, and two pixels are connected to the current supply line 4608.
It is characterized in that it is formed so as to be line-symmetric with respect to.
It is also effective to provide the current supply line 4608 so as to overlap with one of the gate wirings 4603. In this case, the number of current supply lines can be reduced, so that the pixel portion can have higher definition.

(Embodiment 8) In this embodiment, an example of the pixel structure of an EL panel embodying the present invention will be described with reference to FIGS.
Shown in In this embodiment, 4701 is a source wiring of the switching TFT 4702, 4703 is a gate wiring of the switching TFT 4702, 4704 is a TFT for current control, 4705 is a capacitor (can be omitted), 4706 is a current supply line, 4707 Is a power control TFT, 4708 is a power control gate wiring, and 4709 is an EL element. For the operation of the power supply control TFT 4707, refer to Japanese Patent Application No. 11-341272.

In this embodiment, the power supply control TFT 47 is used.
07 is provided between the current controlling TFT 4704 and the EL element 4708, but the power controlling TFT 4707 and the EL
A current control TFT 4704 may be provided between the element 4708 and the element 4708. Also, the power supply control TFT 47
07 has the same structure as the current control TFT 4704,
It is preferable to form them in series with the same active layer.

FIG. 13A shows an example in which a current supply line 4706 is shared between two pixels. That is,
It is characterized in that the two pixels are formed to be line-symmetric with respect to the current supply line 4706. In this case, the number of current supply lines can be reduced, so that the pixel portion can have higher definition.

FIG. 13B shows a gate wiring 470.
A current supply line 4710 is provided in parallel with
This is an example in the case where a power supply control gate wiring 4711 is provided in parallel with the line 01. Note that the current supply line 47 is shown in FIG.
Although the structure is such that 10 and the gate wiring 4703 are provided so as not to overlap with each other, the wiring may be provided so as to overlap via an insulating film as long as both are formed in different layers. In this case, the current supply line 4710 and the gate wiring 47
03 can share the occupied area, so that the pixel portion can be further refined.

(Embodiment 9) In this embodiment, an example of a pixel structure of an EL display device embodying the present invention will be described with reference to FIGS.
It is shown in (B). In this embodiment, reference numeral 4801 denotes a source wiring of the switching TFT 4802, 4803 denotes a gate wiring of the switching TFT 4802, and 4804.
Is a current control TFT, 4805 is a capacitor (can be omitted), 4806 is a current supply line, 4807 is an erasing TFT, 4808 is an erasing gate wiring, and 4809 is E
L element. For the operation of the erasing TFT 4807, refer to Japanese Patent Application No. 11-338786.

The drain of the erasing TFT 4807 is connected to the gate of the current controlling TFT 4804,
The gate voltage of the FT4804 can be forcibly changed. The erasing TFT 4807
May be an n-channel TFT or a p-channel TFT, but preferably has the same structure as the switching TFT 4802 so that off-state current can be reduced.

FIG. 14A shows an example in which a current supply line 4806 is shared between two pixels. That is,
The feature is that two pixels are formed so as to be line-symmetric with respect to the current supply line 4806. In this case, the number of current supply lines can be reduced, so that the pixel portion can have higher definition.

FIG. 14B shows a gate wiring 480.
3, a current supply line 4810 is provided in parallel with the source line 48.
This is an example in which an erasing gate wiring 4811 is provided in parallel with the line 01. Note that in FIG. 14B, the current supply line 4810
Although the gate wiring 4803 and the gate wiring 4803 are provided so as not to overlap with each other, they may be provided so as to overlap with each other via an insulating film as long as they are formed in different layers. In this case, the current supply line 4810 and the gate wiring 480
3 can share an occupied area, so that the pixel portion can be further refined.

(Embodiment 10) The EL display device of the present invention may have a structure in which any number of TFTs are provided in a pixel. For example, four to six or more TFTs may be provided. The present invention can be implemented without being limited to the pixel structure of the EL display device.

[0097]

【The invention's effect】

According to the present invention, a detachable self-luminous EL
By using a panel, unlike a liquid crystal panel, there is no need to use a backlight; therefore, a goggle-type display device with reduced size and weight and reduced power consumption can be manufactured. It is also possible to control the video content using a memory card. The content of the memory card can be changed freely, and the user can set the video content according to his / her preference. Further, since the EL panel is detachable, it is possible to select an EL panel to be used according to the purpose of the user.

[0099]

[Brief description of the drawings]

FIG. 1 is a view schematically showing a goggle type display device of the present invention.

FIG. 2 is a cross-sectional view of the goggle type display device of the present invention.

FIG. 3 is a schematic view of an EL panel used in the goggle type display device of the present invention.

FIG. 4 is a schematic diagram of a goggle type display device and a controller according to the first embodiment.

FIG. 5 is a cross-sectional view of the goggle type display device according to the first embodiment.

FIG. 6 is a schematic diagram of a goggle type display device and a controller according to a second embodiment.

FIG. 7 is an image projected on the retina of the eyeball of Examples 2 and 3.

FIG. 8 is a sectional view of a goggle type display device according to a second embodiment.

FIG. 9 is a schematic view of a goggle type display device according to a third embodiment.

FIG. 10 is a cross-sectional view of a goggle type display device according to a third embodiment.

FIGS. 11A and 11B are a top view and a cross-sectional view of an EL panel used in Embodiment 6. FIGS.

FIG. 12 is a circuit diagram of a pixel portion of an EL panel used in Embodiment 7.

FIG. 13 is a circuit diagram of a pixel portion of an EL panel used in Example 8.

FIG. 14 is a circuit diagram of an EL panel used in a ninth embodiment.

FIG. 15 is a schematic view of a conventional goggle type display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Goggle-type display device main body 101 L and R lens 102 L and R EL panel 103 L and R EL panel insertion opening 104 L and R User's eyeball

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/907 H04N 5/907 B 13/04 13/04 F term (Reference) 5C052 AA17 CC06 DD04 EE08 GA03 GB01 GE08 5C058 AA12 AB06 BA26 BA35 5C061 AA01 AA20 AB14 AB18 AB21 5G435 AA16 AA18 BB05 BB19 CC09 CC11 GG02 LL07

Claims (10)

[Claims] 1. A goggle-type display device having one pair of an EL display device and one pair of optical elements, wherein the display device controls display contents according to video data stored in a memory card, A goggle type display device characterized in that display contents are changed by exchanging characters. 2. The goggle type display device according to claim 1, wherein the memory card is mounted on a head or a face mounting portion. 3. A goggle-type display device comprising a pair of EL display devices and a pair of optical elements, wherein the goggle-type display device is detachable. 4. The goggle type display device according to claim 3, wherein the pair of EL display devices can be controlled independently. 5. The goggle-type display according to claim 1, wherein the optical element is a pair of lenses for enlarging an image displayed by the EL display device and transmitting a front scene. A goggle-type display device, wherein the device is capable of selecting the transmission of a scene in front. 6. The goggle type display device according to claim 1, wherein the two sets of EL display devices respectively display different images and perform a stereoscopic view. 7. The goggle type display device according to claim 1, wherein the EL display device is capable of inverting black and white display. 8. The EL display device according to claim 1, wherein the EL display device has a function of sensing external illuminance, and controls display luminance in accordance with the external illuminance. Goggle type display device. 9. The goggle type display device according to claim 1, wherein the EL display device has a light emission amount of 200 lux or less. 10. The goggle type display device according to claim 1, wherein the EL display device has no polarizing plate.