JP2002099226A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect plural sheets of display panels which are in a three- dimensionally housed state without making joint parts conspicuous. SOLUTION: The display panel 2' is housed on the rear surface side of the display panel 2 and is drawn out in a transverse direction by a unit 7 having a sliding function. The display panel 2 and the display panel 2' constitute one sheet of a large-sized liquid crystal panel 1. The display panel 2 has non-lighting regions 2c and narrow pixel regions 2b near the side ends which are the boundaries between ordinary pixel regions 2a and the display panel 2'. The narrow pixel regions 2b are provided with narrow pixels smaller in size than ordinary pixels. The narrow pixels are enlarged by optical correction lenses 4 constituted on an outer substrate 5 existing above the same and are projected as pixel display. As a result, the non-lighting regions 2c are hidden at the outer substrate 5. The quantity of the light passing the narrow pixel region is corrected by a condenser lens 7. The non-lighting regions 2c are therefore inconspicuous.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to audio-visual (AV) equipment and office automation (OA).
The present invention relates to a display device which can be used for a device or a portable information terminal device, and particularly to a display device having a large screen by connecting a plurality of display panels at side end surfaces.

[0002]

2. Description of the Related Art In recent years, display devices used for AV equipment, OA equipment, and the like have been required to be lightweight, have high definition, have low power consumption, and have a large screen (hereinafter, referred to as a large screen). I have. Especially for larger screens, CRT (Cathode ra)
Technical development and commercialization of various display devices such as a liquid crystal display device, a plasma display device, an electroluminescence display device, and a light emitting diode display device are being advanced.

[0003] Among them, the liquid crystal display device has advantages such as flatness of the display, low power consumption, and easy full-color display as compared with other display devices. Significant advances and improvements have also been seen in the display speed and viewing angle, which were issues. For this reason, the liquid crystal display device is currently used in a wide range of fields as a convenient display device, and has been highly evaluated.
Among them, the demand for liquid crystal display devices in this field is rapidly increasing as display devices for portable information terminals utilizing technologies such as flattening technology and low power consumption.

[0004] With the recent rapid spread of portable information terminals,
With the emergence of many application software and network contents, the information processed on portable information terminals has become enormous compared to before. And it is expected to increase further in the future. As a result, it has become necessary to enlarge the display screen of the portable information terminal in order to display more information. However, making the display screen too large leads to an increase in the size of the hardware of the portable information terminal, which causes a problem that the portability of the information terminal is impaired.

In order to solve such a problem, a plurality of display panels are three-dimensionally stacked and stored when not in use, and when used, the display panels are slid out to enlarge the display screen. By developing a display panel, it is considered to realize a portable information terminal that enables a large-screen display panel without impairing portability.

[0006]

However, a slide-type storage type display panel composed of a plurality of display panels has a problem in that the individual panels have different side panels due to structural problems such as the presence of a sealant for a liquid crystal panel. The vicinity of the end may not be lit. When the display panel is pulled out and the screen is enlarged, a non-lighted portion due to the side edge exists in the display screen, and the display screen is divided. For this reason, a problem arises in viewability when displaying as one large screen. Therefore, in order to realize a slide-type storage type display panel, a technique for expanding the display area to the vicinity of the side end is required.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to store a plurality of display panels in a three-dimensional manner when not in use, and to slide the display panels when in use. Provided is a slide-type storage-type display device capable of achieving high-quality display quality by preventing the vicinity of a side end portion of the display panel from being noticeable when realizing a display panel in which a display screen is enlarged by being drawn out by a function. It is in.

[0008]

According to a first aspect of the present invention, there is provided a display device comprising a plurality of display panels, wherein one display panel is slidably connected to another display panel. A first pixel in the display panel, which is arranged in a matrix, and a first pixel in a display panel, which is arranged near a side edge of one side connected to another display panel, and A second pixel having a small size and an optical correction lens for enlarging and projecting the second pixel are provided.

According to the present invention, a plurality of display panels can be three-dimensionally stacked and stored when not in use, and can be pulled out by the slide function when used to enlarge the display screen. In addition, since the second pixel is enlarged by the optical correction lens, it becomes difficult to visually recognize the boundary portion and the vicinity thereof. For this reason, a slide-type storage type display panel composed of a plurality of display panels is used.
When two images are displayed, it is possible to prevent the boundary between the display panels from being noticeable.

Here, in the present invention, it is preferable that the optical correction lens is configured to project the second pixel in substantially the same size as the first pixel. According to this configuration, since both the first and second pixels are projected with substantially the same size, it is possible to avoid not only the boundary between the display panels but also the noticeable difference between the first and second pixels. .

Further, in the present invention, it is preferable that the display panel is disposed at a fixed gap from the display panel, and that an external substrate for projecting the first and second pixels is provided. According to this configuration, since the first and second pixels are projected on the outer substrate, it can be used as a direct-view type.

Further, in the configuration including the outer substrate, it is preferable that, among the gaps between the display panel and the outer substrate, a first translucent spacer is further provided in a gap corresponding to the first pixel. . According to this configuration, the display panel and the outer substrate are fixed by the first spacer, and the difference in optical characteristics between the first and second pixels can be reduced by using a material for correcting the optical characteristics for the first spacer. It is possible to reduce the number by the first spacer.

A backlight unit for irradiating the display panel with light from a light source is provided, and a light condensing device for condensing light incident on the second pixel is provided between the backlight unit and the display panel. A configuration in which a lens is further provided is desirable. By providing the backlight unit, even a non-self-luminous display device represented by a liquid crystal display device can be used as the display device of the present invention.
Further, by providing the condenser lens, the light from the backlight is condensed by the condenser lens to prevent the second pixel area from being darkened due to the reduced amount of light transmission due to the small size of the second pixel. However, the correction can be performed by increasing the amount of light incident on the second pixel region.

Further, it is preferable that, of the gaps between the display panel and the backlight unit, a gap that corresponds to the first pixel further includes a second spacer having a light transmitting property. According to this configuration, the display panel and the backlight unit can be fixed by the second spacer, and the difference in optical characteristics between the first and second pixels can be reduced by the second spacer. .

[0015] The connecting portion may change from a state in which at least one of the other display panels is three-dimensionally stacked on the display surface side of the certain display panel or an opposite side thereof to a state in which a certain display panel is pulled out. It is desirable to provide a slide mechanism for causing the slide mechanism. As a result, the display panel can be stored compactly, and a large screen can be displayed. In the display panel on the display surface side of the plurality of display panels, the above-described second pixel is arranged near the side edge which is a boundary with another display panel, and the display is enlarged. It is preferable to dispose an optical correction lens for imaging.

Further, it is preferable that the connecting portion includes an elevating mechanism for raising or lowering at least one display panel in a display surface direction when a certain display panel is pulled out by the slide mechanism. Thereby, the display surface can be flattened, and the quality of the display screen can be further improved. In the case where the flattening is performed as described above, the above-described second pixel is arranged near the joint surface of each display panel to be flattened, and the optical correction lens for enlarging and displaying the second pixel is arranged. Is preferred.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the configuration of the display device according to the present embodiment. In this example, a liquid crystal display device will be described as an example of a display device, but the present invention is not limited to this, and the display device may be configured using another type of display panel. Of course.

The liquid crystal display device shown in FIG. 1 includes a large liquid crystal panel 1 having two display panels 2 and 2 'and a slide unit 7, and a drive circuit (not shown) for driving the panel. .

First, the display panel 2 is a small liquid crystal panel 2.
0 on the upper surface of the outer substrate 5 via the first spacer portion 30.
It is configured by laminating. Also, the display panel 2 '
Similarly, the display panel 2 'includes a small liquid crystal panel 20', a first spacer portion 30 ', and an outer substrate 5', and the display panel 2 'has a columnar projection X on a side surface thereof.

The small liquid crystal panel 20 has a normal pixel area 2a in which normal pixels 6a (described later in detail) of a normal size are arranged in a matrix, and narrow pixels 6b smaller in size than the normal pixels (described later in detail). Are provided with a narrow pixel area 2b in which the pixels are arranged, and a non-lighting area 2c in which no pixels are arranged. On the other hand, normal pixels 6a are arranged in a matrix in the entire area of the small liquid crystal panel 20 '.

A plurality of translucent first spacers 3 are provided in a part of the first spacer section 30. The light-transmitting first spacer 3 has a function of maintaining a constant gap between the small liquid crystal panel 2 and the outer substrate 5 and guiding light from a normal pixel 6 a to be described later to the outer substrate 5. Consists of
For example, plastic or the like is used. On the other hand, since the small-sized liquid crystal panel 20 'has the normal pixels 6a in all regions, the first spacer portion 30' has the light-transmitting first spacers 3 in its entirety.

Next, the slide unit 10 (connection part)
A guide member 12 having a horizontally elongated hole 11 and a guide member 1
2 and fixing members 13 and 14 for fixing the display panel 2. The vertical width of the hole 11 is slightly larger than the diameter of the projection 11, and the projection X is slidably fitted in the hole 11. Therefore, the display panel 2 ′ can be pulled out along the hole 11. Alternatively, the display panel 2 ′ can be pushed under the display panel 2.

As a result, the display panel 2 and the display panel 2 'can be stored three-dimensionally, and the display panel 2' can be pulled out of the display panel 2 'by using the slide unit 7.
The area of the display screen can be enlarged. In the present embodiment, the display panel 2 ′ can be stored on the back side of the display panel 2, and is pulled out from the display panel 2 by the slide unit 7. However, these are merely examples, and the present invention is limited to this. It is not the purpose.

FIG. 2 shows the display device shown in FIG. 1 in which a condenser lens 7, a second spacer 8, and a backlight unit 9 are provided.
It is a perspective view showing what was equipped with.

The condensing lens 7 is arranged in a space provided between the liquid crystal panel 2 and the backlight unit 9 in a region corresponding to the back surface of the narrow pixel region 2b. As the backlight unit, a combination of a cold cathode tube and a light guide plate, or a light emitting plate of electroluminescence (EL) is used. A second spacer 8 is provided in a region corresponding to the back surface of the normal pixel region 2a in the gap. The other basic configuration is the same as that of the display device shown in FIG.

FIG. 3 is an enlarged sectional view of an end portion of the display panel 2, which is a configuration of the display device according to the present embodiment.

As shown in this figure, in the small liquid crystal panel 20, a plurality of normal pixels 6a are arranged in a matrix in the normal pixel region 2a. Further, in the narrow pixel area 2b outside the normal pixel area 2a and along the side edge which is a boundary between panels, a narrow pixel 6b smaller than the pixel size of the normal pixel 6a is provided. Multiple arrays are arranged according to the array. The outside of the narrow pixel region 2b is a non-lighting region 2c in which no pixel is provided, and is used as a space for providing a sealing material or the like for confining liquid crystal in the panel.

On the other hand, the first light-transmitting spacer 3 is disposed above the normal pixel region 2a, and the lower part of the outer substrate 5 is provided above the narrow pixel region 2b instead of the first light-transmitting spacer 3. The optical correction lens 4 is arranged on the surface. The optical correction lens 4 is used to expand the light from the narrow pixel 6b.
Specifically, the optical correction lens 4 is provided above the small liquid crystal panel 20, that is, in a closed space surrounded by the small liquid crystal panel 20 and the outer substrate 5, and is provided on a surface facing the outer substrate 5. In FIG. 3, the cross-sectional shape of the optical correction lens 4 is a semicircular convex lens, but is not limited to this.

Here, the normal pixel region 2a and the narrow pixel region 2
b, the size ratio between the normal pixel 6a and the narrow pixel 6b, and the like, the size of the entire panel, the optical correction lens 4
In consideration of various conditions, such as the refractive index of each pixel and the aperture ratio of each pixel, it is optimized and set so that the display is most visible.

In this embodiment, the narrow pixels 6b are provided in two rows along the side edge, but may be provided in one row or three or more rows, and the number thereof is set as needed. do it.

Next, the display in this embodiment will be described. The normal pixel 6a in the liquid crystal panel 20 is projected as a pixel display 7a on the outer substrate 5 by the translucent first spacer 3, while the narrow pixel 6b is displayed on the outer substrate 5 by the optical correction lens 4. Is displayed as a pixel display 7b enlarged to substantially the same size. For this reason, the non-lighting portion 2c of the small liquid crystal panel 20 has the enlarged pixel display 7b on the outer substrate 5.
Obscured by the object, making it difficult for the observer to see. Reference numeral 5a is a region on the outer substrate 5 corresponding to the normal pixel region 2a, and reference numeral 5b is a region on the outer substrate 5 corresponding to the narrow pixel region 2b.

Further, in this embodiment, the light-transmitting first
The spacer 3 has a function of fixing the outer substrate 5 and the small liquid crystal panel 2 and improving the strength of the entire panel constituted by these. At this time, if the light-transmitting first spacer 3 is given optical characteristics, the light-transmitting first spacer 3 is transmitted through the pixel display 7 b enlarged and projected on the outer substrate 5 by the optical correction lens 4. It is also possible to fill in differences in color, brightness, and other optical characteristics between the pixel display 7a and the pixel display 7a projected on the outer substrate 5.

As described above, the optical correction of both the light transmitting first spacer 3 and the optical correction lens 4 causes the outer substrate 5
Pixel display 7 showing the narrow pixel 6b in the region 5b
b is apparently the same as the pixel display 7a in which the normal pixel 6a is projected in the region 5a of the outer substrate 5, so that the non-lighting region 2c at the side end of the small liquid crystal panel 20 and the vicinity thereof are inconspicuous. It is possible to obtain a high-quality screen on the sliding storage type display device.

On the other hand, in the display panel 2 ′, since the normal pixels 6 a are arranged in all the regions as described above, the normal pixels 6 a are also arranged at the side end adjacent to the display panel 2. Will be done. This is because even when the display panel 2 'is pulled out, a part of the display panel 2' overlaps with the display panel 2, so that it is not necessary to secure an image display area up to the boundary at the left end. This overlapping area is used for sealing with a sealing material.

FIG. 4 shows a display device shown in FIG. 3 in which a condenser lens 7, a second spacer 8, and a backlight unit 9 are provided.
It is sectional drawing which showed an example at the time of equipping.

The condenser lens 7 is provided in a closed space surrounded by the second spacer 8 and the backlight unit 9, and is provided on a surface facing the backlight unit 9. In the drawing, the cross-sectional shape of the condenser lens 7 is a trapezoidal convex lens, but is not limited to this.

Next, the display in this embodiment will be described. The light emitted from the backlight unit 9 is
The light is condensed on the narrow pixel area 2b by the condenser lens 7. By this effect, light that should be irradiated to the non-lighting area 2c is made to enter the narrow pixel area 2b, and the backlight light can be used effectively.

The second spacer 8 is provided on the liquid crystal panel 20.
And the backlight unit 9 and fix the display panel 2
Performs the function of improving the strength of. At this time, if the second spacer 8 is provided with optical characteristics, the light condensed by the condenser lens 7 on the narrow pixel region 2b and incident on the normal pixel region 2a through the second spacer 8 It is also possible to fill in the difference in brightness that occurs between the light beams.

The normal pixel 6a in the small liquid crystal panel 20
Is projected as a pixel display 5A on the outer substrate 5 by the first translucent spacer 3, while the narrow pixel 6b is
The optical correction lens 4 causes the outer substrate 3 to project as a pixel display 6B enlarged to substantially the same size as the pixel display 6A. In addition, a non-lighting portion 2 of the liquid crystal panel 2
Since c and the joint portion 2d are covered by the enlarged pixel display 6B on the outer substrate 5, these portions are difficult to be visually recognized by an observer. In FIG. 5, reference numeral 5a denotes a region corresponding to the normal pixel region 2a on the outer substrate 5, and reference numeral 5b denotes a region corresponding to the narrow pixel region 2b on the outer substrate 5.

Further, in the present embodiment, the first translucent spacer 3 has a function of fixing the outer substrate 5 and the small liquid crystal panel 20 and improving the strength of the display panel 2.
At this time, if the first light-transmitting spacer 3 is given predetermined optical characteristics, the pixel display 6B enlarged and projected on the outer substrate 5 by the optical correction lens 4 and the first light-transmitting spacer 3 It is also possible to fill in differences in color, brightness, and other optical characteristics between the pixel display 6A transmitted and projected on the outer substrate 5.

As described above, the correction of the amount of backlight light in both the condenser lens 7 and the second spacer 8 and the optical correction of both the first spacer 3 and the optical correction lens 4 are performed. Due to the two optical corrections, the pixel display 6B in which the narrow pixel 6b is projected in the region 5b of the outer substrate 5 becomes the normal pixel 6a in the region 5a of the outer substrate 5.
And the non-lighting area 2c at the side end of the small liquid crystal panel 20 and the vicinity thereof become inconspicuous, so that a high-quality screen in the slide-type storage type display device can be displayed. It is possible to obtain.

FIG. 5 shows an embodiment of the present invention, in which a liquid crystal panel is used as a display panel, which is an example of the format of a slide-type storage type display device. It is sectional drawing which showed an example when 2 'is accommodated and equipped with the structure pulled out by a slide function.

The slide unit 10 of this embodiment is configured to also serve as a storage case, and includes a bottom plate 15 and first to third side plates 16 to 18. These side plates 16 to 18 are vertically attached to the bottom plate 15.
Note that the third side plate 18 is disposed so as to face the second side plate 17 and is omitted in FIG.

The first side plate 16 is fixed to the side surface of the display panel 2. Further, the second and third side plates 17, 1
8 has a horizontally long groove 19, in which the projection X of the display panel 2 'is slidably fitted.

In this case, the display panel 2 ′ does not need to have a plurality of types of pixels and the optical correction lens 4 as shown in FIG. The display panel 2 ', when pulled out, three-dimensionally intersects the display panel 2 at a side end thereof, and a display surface formed by them has a step. When the display surface is viewed from the front, the two display panels 2 and 2 ′
The boundary between them is inconspicuous because the display area is enlarged at the side end of the display panel 2. Note that these are merely examples, and are not intended to limit the present invention. In particular, the sliding display panel 2 '
May be stored in front of the display surface of the display panel 2 when stored, or the display panel 2 fixed in FIG. 5 may have a sliding function. Further, two or more display panels 2 'may be provided.

FIG. 6 is a cross-sectional view showing an example in which the display device shown in FIG. 5 is provided with the condenser lens 7, the second spacer 8, and the backlight unit 9 as shown in FIG. is there.

According to this configuration, the display area at the side end of the display panel 2 is corrected for the amount of backlight light by the condenser lens 7 and the second spacer 8, so
The boundary between the two display panels 2 and 2 ′ is configured to be even less noticeable. Note that these are merely examples, and are not intended to limit the present invention.

FIG. 7 is a cross-sectional view showing an example of a type of a slide-type storage type display device having an elevating mechanism according to the embodiment of the present invention. Slide unit 10 of this display device
Has the same configuration except that an L-shaped groove 19 ′ is provided in the second and third side plates 17 and 18 instead of the horizontally long groove 19. Then, after the display panel 2 'is drawn out in the horizontal direction along the groove 19', it is lifted up in the vertical direction and locked until the display surface is flattened by the two display panels 2 and 2 '. I have. Second and third side plates 17 and 18 having L-shaped grooves 19 '
Functions not only as a slide mechanism but also as an elevating mechanism. Thereby, the display screen is flattened, and a higher quality display screen can be obtained.

Each of the two display panels 2 and 2 'has a configuration in which the display area shown in FIG. 3 is enlarged at a side end which is a boundary between the display panels. In this example, both panels are flattened, so that one panel is not hidden by the other panel, so that it is necessary to secure a space at the joint surface between the two display panels 2 and 2 ′. Thus, a uniform image can be displayed over the entire screen, and the joining surfaces of the display panels 2 and 2 ′ can be made inconspicuous.

This embodiment is a view showing a structure in which, of the two display panels, another display panel housed behind the fixed display panel is pulled out by a slide function, and the structure is raised. However, these are merely examples and are not intended to limit the present invention. In particular, another display panel that slides toward the display surface side of the fixed display panel may be stored. Further, the display panel may be flattened by sinking, instead of rising up the display panel to flatten the display surface.
Further, the number of display panels may be two or more. Also,
A plurality or all of the display panels may slide.

FIG. 8 is a sectional view showing an example in which the display device shown in FIG. 7 is provided with the condenser lens 7, the second spacer 8, and the backlight unit 9 as shown in FIG. .

With this configuration, the display area at the side end of the display panel 2 is corrected for the amount of backlight light by the condenser lens 7, so that the boundary between the two display panels 2 and 2 'is further increased. The configuration is less noticeable. Note that these are merely examples, and are not intended to limit the present invention.

FIG. 9 shows an embodiment of the present invention, in which a liquid crystal panel is used as a display panel, which is an example of a type of a slide-type storage type display device, in which a structure in which the display panel slides in a plurality of directions is provided. It is the perspective view which showed an example of the case. In this case, since one display panel has a plurality of side edges serving as boundaries between small panels according to the sliding direction, the display area shown in FIG. 2 is enlarged at each of such side edges. It is necessary to have a configuration. By providing such a structure, it is possible to change the configuration of the display screen.

In the example shown in FIG. 9, the display panel 2 '
Can be slid in both the X direction and the Y direction with the state in which is stored as an initial state. For this reason, the display panel 2 on the display surface side has a configuration in which the display area is enlarged in the shaded area.

The present embodiment is a view showing a structure in which a small liquid crystal panel having a sliding function slides vertically and horizontally on the back side of a fixed small liquid crystal panel. It is not limited to.

[0057]

As described above, according to the present invention, a plurality of display panels are three-dimensionally housed, and a large screen can be obtained by a structure capable of pulling out the housed display panels with a sliding function. In such a case, it is possible to increase the screen size without impairing portability by preventing the boundary portion from being conspicuous, and to perform high-quality display.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a schematic configuration of a display device according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a schematic configuration of a display device according to an embodiment of the present invention.

FIG. 3 is a partially enlarged sectional view showing a main configuration of the display device.

FIG. 4 is a partially enlarged cross-sectional view showing a main configuration of the display device.

FIG. 5 is a cross-sectional view illustrating a schematic configuration of a display device of another example.

FIG. 6 is a cross-sectional view illustrating a schematic configuration of a display device of another example.

FIG. 7 is a cross-sectional view illustrating a schematic configuration of a display device of another example.

FIG. 8 is a cross-sectional view illustrating a schematic configuration of a display device of another example.

FIG. 9 is a perspective view illustrating a schematic configuration of a display device of another example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Large liquid crystal panel 2, 2 '... Display panel 20, 20' ... Small liquid crystal panel 2a ... Normal pixel area 2b ... Narrow pixel area 2c ... Non-lighting area 3 ... Translucent 1st spacer 30, 30 '... 1 spacer part 4 ... optical correction lens 5 ... outer substrate 5a ... area corresponding to normal pixel area 2a 5b ... area corresponding to narrow pixel area 2b 6a ... normal pixel 6b ... narrow pixel 6A ... pixel display 6B ... Pixel display 7 ... Condensing lens 8 ... Second spacer 9 ... Backlight unit 10 ... Slide unit (connection part) 11 ... Hole (slide mechanism) 12 ... Guide member 13, 14 ... Fixing member 15 ... Bottom plate 16-18 ... Side plate 19 ... Groove (slide mechanism) 19 '... Groove (slide mechanism, elevating mechanism)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09F 9/00 354 G02F 1/1335 530

Claims (8)

[Claims] 1. A display device comprising a plurality of display panels, comprising: a connecting portion for slidably connecting a certain display panel to another display panel; and a first pixel in the display panel arranged in a matrix. In a certain display panel, a second pixel smaller in size than the first pixel is arranged near a side edge of one side connected to another display panel, and the second pixel is enlarged and projected. A display device, comprising: an optical correction lens. 2. The display device according to claim 1, wherein the optical correction lens projects the second pixel in substantially the same size as the first pixel. 3. The display panel according to claim 1, wherein the display panel is disposed at a fixed gap from the display panel, and the display panel further includes an outer substrate for projecting the first and second pixels. Display device. 4. A light-transmitting first spacer is further provided in a gap corresponding to the first pixel among gaps between the display panel and the outer substrate. Item 4. The display device according to any one of Items 3 to 7. 5. The display panel includes a backlight unit having a light source, and a condenser lens that collects light incident on the second pixel is provided between the liquid crystal panel and the backlight unit. The display device according to any one of claims 1 to 4, wherein the display device is provided. 6. The light-emitting device according to claim 5, further comprising a light-transmitting second spacer in a space corresponding to the first pixel among the space between the display panel and the backlight unit. The display device according to the above. 7. The connecting portion changes from a state in which at least one of the other display panels is three-dimensionally stacked on a display surface side of a certain display panel or an opposite side thereof to a state in which a certain display panel is pulled out. The display device according to any one of claims 1 to 6, further comprising a slide mechanism for causing the display device to slide. 8. A connection mechanism comprising a lifting mechanism for raising or lowering at least one display panel in a display surface direction when a certain display panel is pulled out by the slide mechanism. The display device according to claim 1.