JP2000056713A - Display unit, composite type display and display module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain display unit that a direct view composite type display is simply realized. SOLUTION: An EL display unit 27 consists of an EL panel 21 and an optical fiber plate 22. The plate 22 is obtained by the following way. First, optical fibers are bundled up and fixed into a rod shape, the tip part is stretched, the portion, in which the diameter becomes smaller at first, is cut out into a plate shape in a radial direction, the smaller diameter side is matched with the size of a display region 23 of the panel 21 and the larger diameter side is formed by matching with the size of the outer frame. The plate 22 is laminated on the panel 21 by piling up an image receiving surface 25 of the smaller side to the region 23. Thus, the picture displayed on the region 23 is expanded and displayed to the outer frame size of the panel 21 by the plate 22. Thus, a large size composite type display is simply realized even though connecting terminals to FCP and TCP are formed on the periphery of the panel 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electroluminescence (EL) or liquid crystal display unit, and more particularly to a direct-view type display unit having a high degree of freedom in display capacity and shape, and a composite display using the display unit. And a display module.

[0002]

2. Description of the Related Art As shown in FIG. 8, an EL display panel used for a display device such as an OA (office automation) device or an FA (factory automation) device has a stripe-shaped transparent electrode 2, The first insulating film 3, the light emitting film 4, the second insulating film 5, and the stripe-shaped back electrode 6 orthogonal to the transparent electrode 2 are sequentially laminated. As described above, since the EL display panel is formed through the process of forming various thin films on the glass substrate 1, its size is limited by the capacity of the film forming apparatus. Furthermore, a photoetching process for forming display pixels and an oil sealing process for improving reliability are similarly limited by the size of the device.

[0003] For this reason, the increase in size of the conventional EL display panel requires that each manufacturing apparatus be adapted to the increase in the size of the glass substrate 1, so that the cost of the manufacturing apparatus is partially remodeled or renewed. Always accompany. In addition, as the area of the display area increases, the rate of occurrence of defects in the pixel size in each manufacturing process sharply increases.

Therefore, a projection type display device has been proposed which realizes a large display panel without increasing the size of the glass substrate (Japanese Patent Laid-Open No. Hei 5-341310). In this projection type display device, for example, a display image of each of two liquid crystal display devices is projected on a screen through an image parallel moving means in which a plurality of gradient index lenses are tilted and stacked. A continuous projection image of the image is obtained.

In another display device, light from a light source is transmitted through a plurality of liquid crystal panels, and each of the light guides is linearly arranged in a substantially vertical direction corresponding to a pixel of each liquid crystal panel. Of the light guide panel, and is matched to one continuous display image at the end face of the light guide bundle.

[0006]

However, in a projection type display device which obtains one projection image by continuously displaying images of a plurality of liquid crystal display devices, the display image is projected on a screen via an image translation means. Therefore, there is a problem that light loss due to diffusion occurs and an image becomes darker than that of the direct-view type.

In a display device in which display images of a plurality of liquid crystal display devices are matched to one continuous display image at an end face of the light guide bundle, the plurality of display images are made at the same magnification by the light guide bundle. For propagation, it is necessary to incorporate the light guide bundle according to the size and layout of the aligned continuous images. Therefore, there is a problem that the degree of freedom of incorporating the light guide bundle is small.

In the above two display devices, the display images of the plurality of liquid crystal display devices are propagated by the image translation means or the light guide bundle to obtain one continuous projection image. A continuous image can be obtained despite the arrangement of the driving circuit.
However, there is a problem that the entire apparatus becomes larger than the size of the obtained continuous image by the size of the substrate on which the driving circuit is mounted. Further, there is a problem that the thickness is increased by the length of the image translation means or the light guide bundle.

The above-mentioned increase in the size of the display device can be dealt with, for example, by laying the EL display panels shown in FIG. However, as shown in FIG.
Terminals 14 for connection to a CP (film carrier type package) 12 and a TCP (tape carrier type package) 13 are formed. Therefore, there is a problem that the display area 15 must be smaller than the outer shape of the EL display panel 11, and it is impossible to spread the display area 15 of the EL display panel 11 without any gap as it is. Incidentally, reference numeral 16 denotes a sealing glass.

Accordingly, an object of the present invention is to provide a display unit which does not require a special device for propagating a display image and which can easily realize a direct-view type composite display, and uses the display unit. An object of the present invention is to provide a composite display and a display module.

[0011]

In order to achieve the above object, a display unit according to the first aspect of the present invention has a connection terminal area around which connection terminals are formed, and a display terminal inside the connection terminal area. A display panel having a display area for displaying an image, and a plurality of arranged optical fibers are sliced in the radial direction to be formed in a plate shape, and the shape of one end surface is the shape of the outer periphery of the display area in the display panel On the other hand, the shape of the other end surface is the outer shape of the display panel or an enlarged similar shape of the outer shape, and the one end surface is stacked on the display panel by overlapping the display area of the display panel. An optical fiber plate is provided.

According to the above arrangement, the image displayed on the display area of the display panel is taken in from one end of each optical fiber constituting the optical fiber plate and displayed on the other end. In that case, the shape of the one end face of the optical fiber plate is the same as the shape of the outline of the display area in the display panel, and the shape of the other end face is the shape of the outline of the display panel or an enlarged similar shape of the outline. In addition, the image displayed in the peripheral portion of the display area is enlarged and displayed at least to the edge of the display panel.

According to a second aspect of the present invention, there is provided a display unit having a connection terminal region in which connection terminals are formed and a display panel for displaying an image inside the connection terminal region. An image formed by combining plate-shaped prisms, placed on the display area by bringing the image receiving surface into contact with the edge of the display area in the display panel, and displayed on the edge of the display area Is characterized in that a prism plate is provided which enlarges at least to the position of the edge of the display panel in a direction perpendicular to the edge and displays it on the display surface.

According to the above configuration, the image displayed on the edge of the display area of the display panel is captured from the image receiving surface of the prism plate, and at least the edge of the display panel is orthogonal to the edge of the display area. And is displayed on the display surface.

According to a third aspect of the present invention, in the display unit according to the second aspect of the present invention, of the pixels in the display area of the display panel, the size of the pixel enlarged and displayed by the prism plate is enlarged. It is characterized in that it is (1 / enlargement ratio) of the size of the pixel not to be processed.

According to the above configuration, when the image displayed on the edge of the display area of the display panel is enlarged and displayed by the prism plate, the size of the pixel enlarged and displayed by the prism plate is not enlarged and displayed. Since the size of the pixel is (1 / magnification ratio), the size of the pixel displayed enlarged is the same as the size of the pixel not displayed enlarged. Thus, the distortion of the image accompanying the enlarged display by the prism plate is corrected.

According to a fourth aspect of the present invention, in the display unit according to the second aspect of the present invention, the prism unit is mounted on an area of the display area of the display panel where the prism plate is not mounted. And a parallel plate having the same thickness and the same transmittance as the above.

According to the above arrangement, the image enlarged by the prism plate and the image not enlarged are displayed on the plane having the same transmittance and the same height. In this way, the enlarged image and the non-enlarged image are displayed as the same image without a sense of discomfort.

According to a fifth aspect of the present invention, in the display unit according to the second aspect of the present invention, the prism plate is formed in a plate shape, has a right-angled triangular cross section, and is opposed to the right angle. The display surface facing the edge of the display panel, and one of the two image planes sandwiching the right angle is brought into contact with the edge of the display area of the display panel, and the first image receiving surface is placed on the display area. The prism plate is formed in a plate shape, and the angle formed between the image receiving surface and the display surface is the same as the angle formed between the image receiving surface and the display surface of the first prism plate. With the ridge line formed in step (1) facing the center of the display panel, the image receiving surface is brought into contact with the display surface of the first prism plate, and the second pre-plate mounted on the first prism plate is contacted. It is characterized by being composed by Mupureto.

According to the above configuration, the image displayed on the edge of the display area is displayed on the display surface of the first prism plate while being diagonally enlarged. Further, the image displayed on the display surface of the first prism plate is further enlarged and displayed on the display surface of the second prism plate. Thus, the image displayed on the edge of the display area on the display panel is enlarged and displayed in a direction orthogonal to the edge of the display area to at least the edge of the display panel.

According to a sixth aspect of the present invention, in the display unit according to the first or second aspect, the display panel is an EL display panel.

According to the above configuration, the image displayed on the display area of the self-luminous EL display panel is displayed at least enlarged to the size of the EL display panel. Thus, by using a self-luminous EL display panel as the display panel, the unit is configured to be thinner by the amount of the backlight than when a non-self-luminous liquid crystal display panel is used. Further, excellent characteristics such as high brightness, wide viewing angle, high-speed response, and high durability can be obtained.

According to a seventh aspect of the present invention, there is provided a composite display comprising a plurality of display units according to any one of the first to sixth aspects of the present invention, which are laid out without any gap.

According to the above arrangement, a plurality of display units for displaying an image at least up to the size of the display panel are laid without gaps to form a composite display. Therefore, consecutive 1
Two direct-view large display screens can be obtained very easily.

An eighth aspect of the present invention is a display module using the display unit or the composite display according to any one of the first to seventh aspects.

According to the above configuration, the FCP (TCP) or the FCP (TCC) is provided around the display unit or the display panel constituting the composite display.
The image displayed in the display area is enlarged and displayed at least to the size of the display panel despite the provision of the connection terminal for connection to P).

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. FIG. 1 is a schematic diagram illustrating a configuration of an EL display unit as a display unit according to the first embodiment. This EL display unit is schematically constituted by an EL display panel 21 and an optical fiber plate 22. The EL display panel 21 has a connection terminal (not shown) for connection with FCP or TCP formed around the same as the EL display panel 11 shown in FIG. 9, and the display area 2 is provided inside the connection terminal area.
3 are formed.

The optical fiber plate 22 is composed of an aggregate of a large number of optical fibers, and has a display area 2 of the EL display panel (hereinafter simply referred to as EL panel) 21.
3 is enlarged to the same size as the outline of the EL panel 21.

The EL panel 21 is formed as follows. As shown in FIG. 8, on a glass substrate 1, I
A transparent conductive film typified by TO (indium tin oxide) is formed to a thickness of 100 nm to 200 nm, and an electrode pattern is formed in a stripe shape to obtain a transparent electrode 2. Then, Al ₂ O ₃ ,
A first insulating film 3 composed of an oxide film such as SiO ₂ or TiO ₂ , a nitride film such as Si ₃ N ₄ , or a composite film thereof is laminated. Next, a light emitting film 4 having a composition in which a small amount of Mn or the like is added as a light emitting center to a base material made of ZnS, ZnSe, SrS or the like, and an oxide film, a nitride film or a composite thereof as in the case of the first insulating film 3 described above. A second insulating film 5 made of a film is sequentially laminated. Further, a striped back electrode 6 formed by patterning a metal film such as Al in a direction perpendicular to the transparent electrode 2 is formed.

In the EL element thus formed, a voltage is selectively applied to any one of the plurality of transparent electrodes 2 and any one of the plurality of back electrodes 6 to cause the light emitting film 4 at the intersection of both applied electrodes to emit light. Thus, a desired dot matrix display can be performed.

The EL element produced as described above is
The EL panel 21 is obtained by oil sealing with sealing glass (see FIG. 9) to protect the back electrode 6 side. Usually, the user directly looks at the surface 24 of the EL panel 21 on the glass substrate side, but in the present embodiment, the optical fiber plate 2 bonded on the surface 24 is used.
2, the display image in the display area 23 is enlarged and viewed.

The optical fiber plate 22 is prepared as follows. That is, a large number of optical fibers having a diameter of several μm are bundled, solidified with a glass material, and formed into a rod shape.
Then, one end is stretched in the axial direction, and the stretching start portion in which the side surface is thinned in a trumpet shape is cut out in a plate shape in the radial direction, and the small diameter side is adjusted to the size of the outer periphery of the display area 23, while the large diameter side is adjusted. The optical fiber plate 22 is obtained by shaping according to the outer size of the EL panel 21. The optical fiber plate 22 formed in this manner has a rectangular surface (hereinafter, referred to as an image receiving surface) 25 on the small size side as an EL panel 21.
Are stacked on the EL panel 21 so as to overlap with the display area 23 of FIG. Thus, the EL display unit 27 is formed.

In the above configuration, the image displayed in the display area 23 of the EL panel 21 is formed on the large-size side via the optical fiber corresponding to each pixel of the display area 23 by forming the optical fiber plate 22. The light is transmitted to and displayed on a rectangular surface (hereinafter, referred to as a display surface) 26. Here, the display surface 26 of the optical fiber plate 22 is formed to have the same size as the outer size of the EL panel 21. Therefore, although the connection terminals for FCP and TCP are formed around the EL panel 21. EL panel 21
It is possible to display an image of the full size of the image.

In this case, the optical fiber plate 22
Is formed by bundling a number of optical fibers each having a diameter of several μm sufficiently smaller than the pixel size. Therefore, the image displayed on the EL panel 21 is enlarged and displayed on the optical fiber plate 22, so that the resolution does not decrease.
Further, the distortion of the image around the optical fiber plate 22 due to enlargement is reduced, and the image becomes inconspicuous.

Here, enlargement of the image by the optical fiber plate 22 and image formation on the display surface 26 are performed in each optical fiber. Therefore, the simplification of the optical system for performing the enlargement and image formation can be easily achieved, and the image parallel moving means formed by stacking a plurality of refractive index distribution lenses described in the above-described related art or the linearly arrayed image forming apparatus. The thickness of the light guide bundle can be considerably reduced. Therefore, the thickness of the EL display unit 27 does not become extremely large with respect to the thickness of the EL panel 21. By laying the EL display unit 27 in front, rear, left, and right, a large-area composite EL display can be easily formed.

FIG. 2 shows the composite EL display 28.
FIG. As described above, in the EL display unit 27 shown in FIG. 1, the size of the display surface 26 is the same as the size of the EL panel 21. Accordingly, as shown in FIG. 2, when the EL display units 27 shown in FIG.
Reference numerals 6 are arranged without gaps so that one continuous large display screen can be formed.

Also in this case, since connection terminals are formed around the EL panel 21 in each of the EL display units 27, the F on which the drive circuit is mounted is mounted.
It can be easily connected to CP and TCP. Therefore, by combining the EL display unit 27 shown in FIG. 1, a direct-view type display module having a continuous large screen of various layouts and sizes can be obtained.

FIG. 3 shows a configuration of an EL display unit according to the second embodiment. The EL display unit 31 is roughly composed of an EL panel 32, a parallel plate 35, and a prism plate 38. The EL panel 32 is a terminal (not shown) for connecting to an FCP or a TCP on which a drive circuit is mounted, similarly to the EL panel 21 shown in FIG.
Are formed in the periphery, and a display area 34 is formed inside the connection terminal area 33.

The prism plate 38 is placed on the edge of the EL panel 32 and displays an image of the edge of the display area 34 in an enlarged manner to each edge of the EL panel 32. here,
The outline of the prism plate 38 is located at the same position as the outline of the EL panel 32. The parallel plate 35 is a single transparent plate whose image receiving surface 36 and display surface 37 are parallel to each other, and is placed in a non-enlarged area at the center of the display area 34 of the EL panel 32.

The prism plate 38 is constituted by combining a first prism plate 39, a second prism plate 42 and a third prism plate 45. The first prism plate 39 has a right triangular cross section,
It has an image receiving surface 40 that comes into contact with the edge of the display area 34 (outside the parallel plate 35) of the panel 32, and a display surface 41 that forms an angle α with the image receiving surface 40. The image displayed on the edge portion facing upward in the figure is displayed diagonally enlarged. The second prism plate 42 is provided on the display surface 41 of the first prism plate 39.
And a display surface 44 forming an angle α with the image receiving surface 43 and forming the same plane as the display surface 37 of the parallel plate 35, and is obliquely enlarged by the first prism plate 39. The displayed image is further enlarged and displayed on the upper side. As a result, the display area 3 of the EL panel 32
4, the image displayed in the area having the width l of the edge is
The image is enlarged and displayed in the area of the width L of the edge of the EL panel 32. The third prism plate 45 has a right-angled triangular cross section in which one angle is β, and the EL panel 32
Is sandwiched between the surface 46 of the second prism plate 45 and the surface 46 of the second prism plate 45.

The prism plate 38 having the above configuration
Are provided at two opposing sides of the EL panel 32 as shown in FIG. This prism plate 38
Is for enlarging an image only in a specific direction, and does not have a function of enlarging in the same direction as the optical fiber plate 22 in the first embodiment. Therefore, in the present embodiment, the band-shaped portion having a width 1 on two sides facing each other in the display area 34 is formed by the two prism plates 38, 38, with the band-shaped portion having a width L on two sides facing each other in the EL panel 32. Will be displayed enlarged.

The parallel plate 35 placed inside the prism plates 38, 38 on the EL panel 32
In consideration of the fact that the image displayed on the parallel plate 35 and the image displayed on the prism plates 38, 38 are continuous images, the thickness, the refractive index, and the like are made substantially the same as those of the prism plate 38. The brightness of the image displayed on the parallel plate 35 and the image displayed on the prism plates 38 are adjusted.

An example of specific dimensions of the present EL display unit 31 is as follows. That is, the thickness d of the prism plate 38 is 10 mm, and E
The pitch of the pixels 48 of the L panel 32 is 0.56 mm (pixel length =
0.415 mm, gap length = 0.145 mm), and the number of pixels (the number of pixels arranged in the enlargement direction) enlarged by the prism plate 38 is 50 (only 21 is shown in FIG. 3). Yes, the edge 32a of the EL panel 32 and the outermost pixel 4
The distance (L-1) between the first and second electrodes 8a is 15.9 mm.

The first prism plate 39 of the prism plate 38 receives an image on the display area 34 of the EL panel 32 on an image receiving surface 40, and forms an acute angle α with the image receiving surface 40.
Is displayed on the display surface 41 which forms a geometrically enlarged image. Further, in the second prism plate 42, similarly,
The image on the display surface 41 is received by the image receiving surface 43, and the image receiving surface 4
A geometrically enlarged image is displayed on the display surface 44 forming an acute angle α with 3. Thus, finally, the image enlarged to the full size of the EL panel 32 is displayed.

As described above, in the present embodiment, the prism plates 38, 38 are provided on the two opposite sides on the display area 34 of the EL panel 32,
A parallel plate 35 is provided between the two prism plates 38,38. And both prism plates 38,3
8 is the same as the size of the EL panel 32 between the outer edges. Therefore, the image displayed on the band-shaped portion having the width l of two sides facing each other on the display area 34 of the EL panel 32 is transmitted through the first and second prism plates 39 and 42 constituting the prism plate 38 to the EL panel. At the position of the edge of 32, it is enlarged and displayed in a band-like portion having a width L. That is, the image on the display area 34 is displayed on the EL panel 32.
It is displayed in full size. Therefore, despite the formation of terminals for connection to FCP and TCP around the EL panel 32, the EL panel 3
It is possible to display an image of the full size of 2.

In this case, under the above dimensions, the angle α formed by the image receiving surface 40 of the first prism plate 39 and the display screen 41 is 19.7 °, and the surface 46 of the EL panel 32 and the surface of the second prism plate 45 The angle β with 47 is 32.2
It becomes ゜. Therefore, the pixel length of the display pixel 49 displayed on the surface of the prism plate 38 is geometrically 0.65 m.
m, which is enlarged to the left in the figure. Incidentally, the pixel length Pl of the display pixel 49 displayed on the surface of the prism plate 38 is represented by an angle α (= 19.7 °) and an angle β (= 3
It is expressed by the following equation using 2.2 ゜). _{Pl = {(Pl 0 / cosα} ) × cos (90-α-β)} / sinβ = 1.57 × Pl 0 However, pl _0: pixel length of the pixel 48 on the EL panel 32

Thus, the image 4 on the EL panel 32
8 is magnified 1.57 times and displayed on the prism plate 38. As a result, the pixel length of the display pixel 50 on the parallel plate 35 (= 0.415 mm: non-magnified) and the pixel length of the display pixel 49 on the prism plate 38
(= 0.65 mm: enlarged), and the image at the edge of the display area 34 is distorted. Therefore, in the design stage of the EL display unit 31, the display area 3
It is necessary to correct the size and shape of the enlargement target pixel in 4 in advance.

FIG. 5 shows the structure of an EL display unit 51 according to the third embodiment. The EL panel 52, the parallel plate 53, and the prism plate 54 have the same configuration as the EL panel 32, the parallel plate 35, and the prism plate 38 shown in FIG.

In the present embodiment, the pixel length of the non-enlarged pixel 56 in the display area 55 of the EL panel 52 is 0.415 mm, which is the same as the pixel length of the pixel 48 in the display area 34 of the EL panel 32 shown in FIG. It is. On the other hand, the pixel length of the enlarged pixel 57 in the display area 55 of the EL panel 52 is 1.5 due to the prism plate 54.
Considering that the image is enlarged 7 times, the pixel length in the enlargement direction of the pixel 48 in the EL panel 32 shown in FIG.
0.266mm (= 0.4) reduced to (1 / 1.57 = 0.64)
15 × 0.64).

As described above, in the present embodiment, the pixel 57 enlarged and displayed by the prism plate 54 in the display area 55 of the EL panel 52 is reduced to (1 / magnification ratio) of the pixel 56 not enlarged and displayed. Keep it. Therefore, a portion of the image displayed in the display area 55 that is enlarged by the prism plate 54 is not distorted by the enlargement, and a high-quality display can be performed.

Incidentally, the prism plates 38, 54 in the second and third embodiments are for enlarging and displaying the edge areas of the display areas 34, 55 only in one direction. Therefore, the prism plate 3
When the periphery of the display image on the EL panels 32 and 52 is enlarged and displayed to the edges of the EL panels using the display panels 8 and 54, as shown in FIG. 6A or FIG. Each of the prism plates 62 to 65 is arranged at the edge of the EL panel 61. However, in the case of FIG. 6A, the four corners 66a in the display area 66 are not enlarged and displayed on any of the prism plates 62 to 65. FIG.
In the case of (b), there is a problem that portions 67 where images are discontinuous occur at the four corners of the EL panel 61.

In order to eliminate the above problem, FIG.
As shown in (a), four prism plates 72 to 75
Are arranged so that the edges of the EL panel 71 do not come into contact with each other. Then, rectangular prism blocks 76 are arranged in the spaces formed between the end faces of the respective prism plates 72 to 75 at the four corners of the EL panel 71. As shown in FIG. 7B, the prism block 76 has a first prism block 77 having the same function as the first prism plate 39 in FIG. 3, and a second prism block having the same function as the second prism plate 42. 78,
The third prism plate 45 includes a third prism block 79 having the same function.

By doing so, the EL panel 7
The four corners 80a in the upper display area 80 are enlarged and displayed at the four corner positions of the EL panel 71 by the prism block 76, and the image displayed in the display area 80 is enlarged in all directions. It is displayed in exactly the same size as 71. Therefore, the EL display unit 8 using the prism block 76 as shown in FIG.
When the composite EL display is formed by laying out the 1s, the display surfaces of the respective EL display units 81 are arranged without gaps, and one continuous large display screen can be formed. In this case as well, since connection terminals are formed around the EL panel 71 in each of the EL display units 81, the connection terminals can be connected without any trouble to the FCP or the TCP on which the drive circuit is mounted, and the direct viewing can be easily performed. A type of display module can be obtained.

Here, the optical fiber plate 22 and the EL panel 21 in the first embodiment are bonded together, and the first, second, and third prism plates 39, 42 in the second and third embodiments are used. , 45 or the first, second, and third prism blocks 77, 78, and 79 are bonded by a resin such as a resin, an epoxy resin, or an acrylic resin having a refractive index close to that of glass. Use a highly permeable resin. In this way, light emission luminance is not impaired on each bonding surface.

The enlargement of the image by the optical fiber plate 22 in the first embodiment or the prism plates 38, 54 in the second and third embodiments and the image formation on the display surfaces 26, 44 are performed by each light. There is almost no light loss because it is performed in the fiber or in the first and second prism plates 39 and 42. Therefore, the EL display units 27, 31, 51 which are self-luminous display units
In this case, the light emission luminance can be used effectively, and a brighter image can be obtained as compared with the case where the image is projected on the screen via the conventional image parallel moving means.

In the second and third embodiments, the parallel plates 35, 53 are mounted inside the prism plates 38, 54 on the EL panels 32, 52. However, the parallel plates 35 and 53 may be omitted as long as the display quality is not impaired. The enlarged display by the optical fiber plate 22 in the first embodiment or the prism plates 38 and 54 in the second and third embodiments is performed by the EL panels 21 and 3.
The size is limited to 2,54. However, EL
Even if the size is equal to or larger than the size of the panels 21, 32, and 54, a composite EL display module having one continuous direct-view large display image can be obtained.

In each of the above embodiments, the case where excellent characteristics such as high luminance, wide viewing angle, high-speed response, and high durability are obtained by using the EL panels 21, 32, 52 will be described as an example. However, other self-luminous display panels may be used. Further, a non-self-luminous display panel such as a liquid crystal display panel may be used.

[0058]

As apparent from the above description, the display unit according to the first aspect of the present invention has a display panel having a connection terminal area on the periphery, a display area on the inside, and a display panel having one end face having the shape of the display panel. The outer shape of the display area of the panel is the same as that of the display area. Is enlarged and displayed at least to the size of the display panel by the optical fiber plate.

That is, according to the present invention, the image displayed in the display area in the connection terminal area is enlarged and displayed at least to the size of the display panel despite the presence of the connection terminal area around the display panel. it can. Therefore, by laying the display units without gaps, a composite display having one continuous large direct-view display screen can be easily formed. In this case, the size of the formed large display screen is equal to or larger than the total size of the spread display units, and the size of the entire composite display device with respect to the continuous large display screen can be reduced.

Further, when the image is enlarged and displayed by the optical fiber plate, there is almost no light loss, and a brighter image can be obtained as compared with the conventional projection display device which projects the image on the screen via the image parallel moving means. . Further, since the enlarged display of the image by the optical fiber plate is performed in each optical fiber, the optical system for the enlarged display can be simplified, and the display unit can be made thin.

The display unit according to the second aspect of the present invention is formed by combining a display panel having a connection terminal area on the periphery and a display area on the inside with a plate-shaped prism, and the display area. It has a prism plate that is mounted on the edge of the display area and displayed by enlarging and displaying the image of the edge of the display area captured from the image receiving surface at least up to the edge of the display panel in a direction perpendicular to the edge. The image displayed on the edge of the display area on the display panel can be enlarged and displayed in a direction orthogonal to the edge of the display area to at least the edge of the display panel.

That is, according to the present invention, the image displayed in the display area in the connection terminal area is enlarged and displayed at least to the size of the display panel, despite the presence of the connection terminal area around the display panel. it can. Therefore, by laying the display units without gaps, a composite display having one continuous large direct-view display screen can be easily formed. In this case, since the size of the formed large display screen is equal to or larger than the total size of the spread display units, the overall size of the combined display device with respect to the continuous large display screen can be reduced. Further, when the image is enlarged and displayed by the prism plate, there is almost no light loss, and a brighter image can be obtained as compared with the projection display device which projects the image on the screen via the conventional image parallel moving means.

In the display unit according to the third aspect of the present invention, the size of the pixel enlarged and displayed by the prism plate in the display area of the display panel is set to (1 / magnification ratio) of the size of the pixel not enlarged and displayed. ), The size of the pixel enlarged and displayed by the prism plate can be made the same as the size of the pixel not enlarged and displayed. Therefore, according to the present invention, it is possible to correct the distortion of the image accompanying the enlarged display by the prism plate.

In the display unit according to a fourth aspect of the present invention, a parallel plate having the same thickness and the same transmittance as the prism plate is mounted on an area of the display area of the display panel where the prism plate is not mounted. As a result, the image magnified by the prism plate and the image not magnified can be displayed on the surface having the same transmittance and the same height. Therefore, the enlarged image and the non-enlarged image can be displayed as the same image without a sense of incongruity.

According to a fifth aspect of the present invention, in the display unit according to the fifth aspect of the present invention, the prism plate is formed by bringing a display surface facing a right angle toward an edge of the display panel and bringing an image receiving surface into contact with an edge of the display area. A first prism plate placed on the display area, a ridge formed by the image receiving surface and the display surface facing the center of the display panel, and the image receiving surface contacting the display surface of the first prism plate. The second prism plate placed on the first prism plate, the image displayed on the edge of the display area is displayed diagonally on the display surface of the first prism plate, Further, the image can be enlarged and displayed on the display surface of the second prism plate. Therefore, the image displayed on the edge of the display area in the display panel can be enlarged and displayed in a direction orthogonal to the edge of the display area up to at least the edge of the display panel.

In the display unit according to the present invention, the display panel may be a self-luminous EL.
Since the display panel is constituted by a display panel, a backlight such as a non-self-luminous liquid crystal display panel is not required. Therefore, the unit can be made thinner than the liquid crystal display panel. Further, excellent characteristics such as high luminance, wide viewing angle, high-speed response, and high durability can be obtained.

Further, the composite display of the invention according to claim 7 is formed by laying a plurality of display units of the invention according to any one of claims 1 to 6 without gaps, so that one continuous display is provided. A large direct-view display screen can be easily and inexpensively obtained using existing manufacturing equipment. Furthermore, the size and shape of the large display screen in that case are not restricted by the manufacturing equipment.

The display module according to the present invention uses the display unit or the composite display according to any one of the first to seventh aspects. Although the FCP or TCP and the connection terminal for connecting to the FCP or TCP are provided around the display panel to be configured, the image displayed in the display area is enlarged to at least the size of the display panel. Can be displayed.

[Brief description of the drawings]

FIG. 1 shows an EL as a display unit according to the present invention.
It is a schematic diagram which shows the structure of a display unit.

FIG. 2 is a schematic view of a composite EL display using the EL display unit shown in FIG.

FIG. 3 is a partial sectional view of an EL display unit different from FIG.

FIG. 4 is a configuration diagram of the EL display unit shown in FIG. 3;

FIG. 5 is a partial sectional view of an EL display unit different from FIGS. 1 and 3;

FIG. 6 shows E of the prism plate in FIGS. 3 and 5;
It is a figure showing an example of arrangement to an L panel.

FIG. 7 is a diagram showing an example of arrangement on an EL panel when a prism block is used in combination with the prism plate in FIGS. 3 and 5;

FIG. 8 is a configuration diagram of an EL panel.

FIG. 9 is an explanatory diagram of the connection of the FCP to the EL panel.

[Explanation of symbols]

21, 32, 52, 61, 71 EL panel, 22 optical fiber plate, 23, 34, 55, 66, 80 display area, 27, 31, 51, 81 EL display unit, 28 composite EL display , 35,53
... Parallel plate, 36,40,43 ... Image receiving surface,
37, 41, 44 ... display surface, 38, 54, 62 to 65, 72
-75: prism plate, 39: first prism plate, 42: second prism plate, 45: third prism plate, 48: pixel, 56: non-enlarged pixel, 49, 50: display pixel, 57: enlarged pixel, 76 ... prism blocks,
77: a first prism block, 78: a second prism block, 79: a third prism block.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masaaki Hirai 22-22 Nagaikecho, Abeno-ku, Osaka City, Osaka F-term (reference) 5C094 AA12 AA13 AA14 AA43 BA16 BA27 BA43 CA19 DA01 DB03 ED01 ED04 FA03

Claims (8)

[Claims] 1. A display panel having a connection terminal region in which connection terminals are formed and having a display region for displaying an image inside the connection terminal region, and a plurality of optical fibers arranged in a line. While being formed into a plate shape by slicing in the direction, the shape of one end face is the same as the outer shape of the display area in the display panel, while the shape of the other end face is the outer shape of the display panel or the shape of the outer shape. A display unit having an enlarged similar shape, comprising an optical fiber plate laminated on the display panel with the one end face overlapped with a display area of the display panel. 2. A display panel having a connection terminal region around which a connection terminal is formed and having a display region for displaying an image inside the connection terminal region, and a plate-shaped prism are formed. Along with the image receiving surface is placed on the display area in contact with the edge of the display area in the display panel, the image displayed on the edge of the display area, at least in the direction orthogonal to the edge A display unit, comprising: a prism plate that expands to a position on an edge of a display panel and displays the image on a display surface. 3. The display unit according to claim 2, wherein a size of a pixel enlarged and displayed by the prism plate among pixels in a display area of the display panel is (1/1/2) of a size of a pixel not enlarged and displayed. (Enlargement rate)
A display unit, characterized in that: 4. The display unit according to claim 2, wherein the display unit is mounted on an area of the display area of the display panel where the prism plate is not mounted.
A display unit comprising a parallel plate having the same thickness and the same transmittance as the prism plate. 5. The display unit according to claim 2, wherein the prism plate is formed in a plate shape and has a cross section of a right triangle,
With the display surface facing the right angle facing the edge of the display panel, one of the two surfaces sandwiching the right angle is brought into contact with the edge of the display area of the display panel and placed on the display area. The first prism plate is formed in a plate shape, and the angle formed between the image receiving surface and the display surface is the same as the angle formed between the image receiving surface and the display surface of the first prism plate. With the ridge line formed by the and the display surface facing the center of the display panel,
A display unit, comprising: a second prism plate placed on the first prism plate with the image receiving surface in contact with the display surface of the first prism plate. 6. The display unit according to claim 1, wherein the display panel is an EL display panel. 7. A composite display comprising a plurality of display units according to any one of claims 1 to 6 laid out without gaps. 8. A display module using the display unit or the composite display according to claim 1.