JP2011081395A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device having a display region with a large area in which two sheets of display panels are abutted on each other, and the abutted portion is inconspicuous, thereby achieving high-quality image display. <P>SOLUTION: The display device includes optical path changing lenses LPL1 and LPL2, which are arranged while abutting on the abutted portion BE of the two sheets of display panels, and the abutted portion comprises one-end sides of the display panels PNL1 and PNL2. Abutted ends of the lenses form a line above the abutted portion BE. Each of the first optical path changing lens LPL1 and the second optical path changing lens LPL2 has a lens shape that functions to change the optical path of an optical image in a farther portion from the abutted portion BE in a direction toward a viewing point VP, and also to reduce an optical image in a non-display region BW which includes a frame where a shield frame SHD is present in a direction perpendicular to a boundary of the abutted portion BE within the display plane into a linear form above the boundary of the butted portion BE and perpendicular to the display screen so as be converged in light to the viewing point VP. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display device, and is particularly suitable for a display device in which one side of two display panels having a small size display area is brought into contact with each other to form a double size display area.

  There is a need to construct a large-screen display device in which two display panels are arranged side by side and the screen size is twice the original display area of each display panel. Patent Document 1 discloses that a plurality of liquid crystal display devices are connected in the plane direction to constitute a foldable liquid crystal display device having a single large-size screen as a whole. Further, Patent Document 2 discloses a liquid crystal display device having a large screen with excellent display quality by making the dead space of the joint of the liquid crystal display panel inconspicuous when a large screen is formed by arranging a plurality of liquid crystal display panels.

  Patent Document 3 describes a portable liquid crystal display device in which two liquid crystal display panels are brought into close contact with each other while maintaining the portability to increase the screen area.

JP-A-5-66388 JP-A-8-190089 JP-A-11-167354

  In Patent Document 1, although a plurality of small liquid crystal display panels are connected by a flexible cable and can be folded, the portability is good. However, the non-display portion existing in the butt portion of the liquid crystal display panel has an area twice as large. It is very uncomfortable to see as one display screen.

  The liquid crystal display device of Patent Document 2 requires that the display pixel interval in one liquid crystal display panel and the pixel portion interval sandwiching the joint of two liquid crystal display panels be substantially the same. Further, in order to bring two liquid crystal display panels into close contact with each other, it is necessary to process the width of the side wall to 0.3 mm or less, or to reduce the width of the seam of the liquid crystal display panel to 1.5 mm or less. When the liquid crystal display panel processed in this way comes into close contact, it is necessary to use an optical film so that the joint is not visible to the eyes of the observer.

  FIG. 11 is a schematic plan view for explaining an example of a conventional display device in which one side of two display panels is butted to form a display area that is twice the size of the original display area, and FIG. It is a schematic cross section along an AA '' line. In FIGS. 11 and 12, the display panels are shown to face each other without a gap, and the frame is not shown. When a display area having a size twice that of the original display area is formed by matching one side of the two display panels, the first display panel PNL1 and the second display panel having the same configuration as shown in FIG. It is desirable to rotate the PNL 2 180 degrees in the plane so that the corresponding sides meet each other.

  As shown in FIG. 12, the first display panel PNL1 is formed by bonding the first substrate (TFT substrate in the active matrix display panel) SUB1A and the second substrate (usually a color filter substrate, CF substrate) SUB2A. The liquid crystal is sealed in the bonding gap. Similarly, the second display panel PNL2 is formed by bonding the first substrate (TFT substrate in the case of an active matrix display panel) SUB1B and the second substrate (usually a color filter substrate, CF substrate) SUB2B to form a bonding gap. The liquid crystal is sealed in.

  In this example, the first substrates SUB1A and SUB1B protrude from the corresponding sides of the second substrates SUB2A and SUB2B on at least one side (here, two sides). Data drivers (signal line drive circuit chips) DDR1 and DDR2 and gate drivers (scanning line drive circuit chips) GDR1 and GDR2 are mounted on the protruding portion. The display areas AR1 and AR2 of the first and second display panels PNL1 and PNL2 are narrower than the surfaces of the second substrates SUB2A and SUB2B.

  The periphery of the display panel is held by a shield frame (case), and a non-display area BW exists in the butted portion BE of the two display panels including the arrangement of the shield frame and the display area. Therefore, when an image is displayed as one display area in the display areas AR1 and AR2 of the first and second display panels PNL1 and PNL2, the above-described non-display area BW is conspicuous and the display becomes uncomfortable.

  An object of the present invention is to provide a display device having a large display area that enables high-quality image display without conspicuous the butted portion even when two display panels are butted.

  In order to achieve the above object, in the display device of the present invention, each side is abutted along the abutted boundary between the first display panel and the second display panel, and the first display panel and the second display panel A first optical path changing lens and a second optical path changing lens are provided so as to cover at least each display area. In the first optical path changing lens and the second optical path changing lens, the optical image of the frame in the direction orthogonal to the display surface from the abutted boundary is linearly reduced upwardly orthogonal to the display surface of the abutted boundary. The lens shape is such that the optical path is changed so as to collect light.

  Further, the first optical path changing lens and the second optical path changing lens in the display device of the present invention may be configured such that the portion of the display panel has a large distance in a direction orthogonal to the display surface from the butted boundary. A uniform change region for changing the optical path of the optical image of the image displayed in the display region to a direction perpendicular to the display surface while maintaining linearity in a direction orthogonal to the butted boundary, and the matching When the distance in the direction orthogonal to the boundary is small, the optical path of the optical image of the image displayed in the display area of the display panel is lined upwardly so that the optical image of the frame is orthogonal to the display surface of the butt boundary. And a non-uniformly changing region in which the optical path is changed so as to be condensed after being reduced.

  In the present invention, the characteristics of the optical path change of the first optical path changing lens and the second optical path changing lens can be axisymmetric with respect to the butt boundary. Then, the uniform change region is in a direction perpendicular to the display surface, the outer shape of the cross section of the display surface is an inclined surface, and the larger the distance in the direction orthogonal to the display surface from the butted boundary, A cross section in which the distance between the inclined surface and the display surface increases can be a wedge shape. Then, the non-uniform change area is set in a direction perpendicular to the display surface, and the outer shape of the cross section of the display surface side is a convex curve (arc, elliptical arc, parabola, or continuous unequal curvature). Curve).

  According to the present invention, each end of the first optical path changing lens and the second optical path changing lens excluding the abutting boundary, and each corresponding frame of the first display panel and the second display panel are provided. A spacer is provided in between, and the inner edge of the spacer is advanced from the inner edge of each corresponding frame of the first display panel and the second display panel to the display area side, so that the reflected light on the inner surface of the frame is reflected. The first optical path changing lens and the second optical path changing lens can be disposed at positions that prevent the first optical path changing lens and the second optical path changing lens from reaching the first optical path changing lens. The surface of the first optical path changing lens and the surface of the second optical path changing lens can be continuous.

In the display device of the present invention, upper edges of one side abut each other along a boundary where the first display panel and the second display panel are abutted, and at least each of the first display panel and the second display panel. A first tilted fiber lens and a second tilted fiber lens installed to cover the display area,
The first inclined fiber lens and the second inclined fiber lens are rectangular plate shapes obtained by cutting a fiber prism made of a large number of fibers that are focused and joined in parallel and linearly at a predetermined angle with respect to the major axis of the prism. Body,
The lower edge of the one side of the first inclined fiber lens and the second inclined fiber lens to be abutted with each other may be positioned closer to the display region than the inner edge of the frame of the respective one side abutted.

  Then, the lower edge of the side opposite to the one side of the first inclined fiber lens and the second inclined fiber lens that is opposite to the one side of the first inclined display lens and the second display panel is connected to each side of the first display panel and the second display panel. It can be set as the structure located on the said display area side from the inner edge of the frame located on the opposite side to a picture frame.

  According to another embodiment of the present invention, there is provided a display device having a display panel having a frame on the outer periphery of the display area, and an optical path changing lens disposed above the display panel, wherein the optical path changing lens is the display panel. When the cross-sectional shape corresponding to one side is a surface facing the display panel, one side is a linear shape having an inclination with respect to the display panel, and the other side is a curved shape (curved curve toward the display panel). ) And on the opposite side of the surface facing the display panel, it is parallel to the display area of the display panel.

  The optical path changing lens is supported by a spacer disposed on the frame of the display panel, and is disposed on the frame on the linear shape side having an inclination with respect to at least the display panel of the optical path changing lens. It can also be set as the structure which is not arrange | positioned on the shape side frame.

  In addition, when the viewer observes the display device from the curved shape side by arranging the spacer on the frame on the linear shape side having an inclination with respect to the display panel by moving forward from the inner edge of the frame to the display region side, It is possible to prevent the reflected light on the side surface, which is a step portion with respect to the display area of the frame, from reaching the optical path changing lens, and to suppress the generation of bright lines caused by the reflection of the side surface portion of the frame, thereby enabling display without a sense of discomfort .

  As a method for using this display device, for example, two display devices may be arranged so that their curved shapes face each other and used as a large screen display device. If there is a point of view at the connection part of two display devices, and the spacer on the linear shape side that is inclined with respect to the display panel is not arranged to advance from the inner edge of the frame to the display area side, the step between the frame and the display area This is because the side surface of the light is recognized as a bright line by the reflected light.

  It should be noted that the spacer can be stably disposed by arranging it with a single U-shaped member including a portion disposed on the frame on the linear shape side having an inclination with respect to the display panel of the optical path changing lens. In addition to supporting the spacer, it is possible to save the labor of arranging the spacer.

  The display device of the present invention is suitable for realization as a liquid crystal display device, but can be similarly applied to a display device using another panel type display panel, such as an organic EL display device.

  According to the present invention, a non-display area between two attached display panels can be significantly narrowed to provide a large-sized display device having a non-area substantially twice the original.

  The present invention is not limited to the configuration described in the above solution, and it goes without saying that various modifications can be made without departing from the technical idea of the present invention described in the claims. Yes.

It is explanatory drawing of Example 1 of this invention. FIG. 3 is an operation explanatory diagram of Embodiment 1 shown by a schematic cross-sectional view along the line A-A ′ of FIG. FIG. 6 is a partial perspective view, partly in section, for further explaining the operation of the optical path changing lens of Example 1. 6 is an explanatory diagram of a dimension example of an optical path changing lens in Embodiment 1. FIG. It is the figure which put together the representative numerical value example of each part in FIG. It is a fragmentary sectional view explaining an example of the fixing structure of the optical path changing lens on the display panel on the opposite side to the butted side. It is a figure explaining the effect | action of the bright line prevention structure shown in FIG. It is a perspective view of the inclination fiber lens explaining Example 2 of this invention. It is a figure explaining the state which installed the inclination fiber lens shown in FIG. 8 on the display panel. It is a cross-sectional schematic diagram which shows the whole display apparatus of Example 2 which covered each display panel of the two display panels which faced each other, and accumulated the inclination fiber lens on each. FIG. 10 is a schematic plan view illustrating an example of a conventional display device in which one side of two display panels is brought into contact with each other to form a display area that is twice the size of the original display area. FIG. 12 is a schematic cross-sectional view taken along the line A-A ′ ′ of FIG. 11.

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

  In the following embodiments, description will be made assuming that a liquid crystal display panel is used, but the same applies to other types of display panels. Hereinafter, the display panel is also referred to as a cell.

  FIG. 1 is an explanatory diagram of Embodiment 1 of the present invention. This display device is the same as that described with reference to FIG. That is, the first display panel PNL1 is configured by bonding the first substrate SUB1A and the second substrate SUB2A and sealing the liquid crystal in the bonding gap. Similarly, the second display panel PNL2 is configured by bonding a first substrate SUB1B and a second substrate SUB2B and enclosing a liquid crystal in a bonding gap.

  In FIG. 1, the first substrates SUB1A and SUB1B of the two display panels protrude from the corresponding sides of the second substrates SUB2A and SUB2B at their two sides. Data drivers DDR1 and DDR2 and gate drivers GDR1 and GDR2 are mounted on the protruding portion. As described above, the display areas AR1 and AR2 of the first and second display panels PNL1 and PNL2 are narrower than the surfaces of the second substrates SUB2A and SUB2B. In the first embodiment, the first optical path changing lens LPL1 and the second LPL2 are installed so as to cover the display areas of the first display panel PNL1 and the second display panel PNL2. The optical path changing lens of Example 1 is formed of an acrylic plate, but may be formed of other appropriate resin material or glass.

  FIG. 2 is an operation explanatory view of the first embodiment shown by a schematic cross-sectional view along the line A-A ′ of FIG. 1. When the display panels PNL1 and PNL2 are liquid crystal display panels, a light guide plate (not shown) constituting a backlight is arranged on the back of the display panel constituted by the two substrates described in FIG. The periphery of the panel is held by a shield frame (holding case) SHD. A non-display area BW exists in the butted portion BE of the two display panels including the space between the shield frame SHD, the display area and the panel edge.

  The optical path changing lenses LPL1 and LPL2 are arranged so as to abut each other on the one side of each display panel PNL1 and PNL2 above the abutting portion BE of the two display panels. The butt end is linear above the butt portion BE. The first optical path changing lens LPL1 and the second optical path changing lens LPL2 change the optical path of the portion of the optical image far from the abutting portion BE in the viewpoint VP direction and are orthogonal to each other in the display plane from the boundary of the abutting portion BE. The optical image of the non-display area BW including the frame at 5 has a lens shape that acts so as to reduce the line to the upper side perpendicular to the display surface at the boundary of the butted portion BE and to focus the viewpoint VP.

  FIG. 3 is a partial perspective view, partly in section, for further explaining the operation of the optical path changing lens of the first embodiment. Although the second optical path changing lens LPL2 in FIG. 2 is described in FIG. 3, the same applies to the first optical path changing lens LPL1. The optical path changing lens LPL2 is installed at a distance (gap between the acrylic plate and the cell) B from the display surface of the display panel (cell) PNL. Further, a indicates a point on the outer edge of the display area inside the frame on the butt side of the display panel, and b indicates a point on the outer edge of the display area on the inner side of the frame on the side opposite to the butt side of the display panel. The display area is slightly inside the inner edge of the shield frame SHD, and the width LA of the non-display portion is usually wider than the width LA of the shield frame SHD.

  In FIG. 3, the light image of the part a is condensed on the viewpoint VP via the optical path changing lens LPL2, and the light image of the part b is condensed on the viewpoint VP via the optical path changing lens LPL2. Then, the optical image of the abutting portion BE side, that is, the non-display area BW from the part a is not visible from the viewpoint VP side by the optical path changing lens LPL2.

  FIG. 4 is an explanatory diagram of a dimension example of the optical path changing lens in the first embodiment. FIG. 5 is a table summarizing representative numerical examples of each part in FIG. First, in FIG. 4, the optical path changing lens LPL includes a curved portion LX and a wedge-shaped portion WG. The boundary between the curved portion LX and the wedge-shaped portion WG of the optical path changing lens LPL is variable depending on the size of the display panel, but in FIG. 4, the position is closer to the butt side of the other optical path changing lens. Since the image passing through the curved portion LX is compressed toward the abutment portion, the optical image passing through the wedge-shaped portion WG side of the curved portion LX and the wedge-shaped portion WG are prevented so that the entire image due to this compression does not become unnatural. The boundary may be selected so that the light image passing through naturally transitions.

The optical path changing lens LPL has a size that covers the entire display panel PNL. In FIG.
B. ・ Gap (cell gap) between display panel PNL and optical path changing lens LPL
LX1 .. Distance LX2 from the edge of the butted portion to the position where the line perpendicular to the display surface of the display panel passes through the center of curvature C of the curved portion LX and intersects with the optical path changing lens LPL. The arc range of the curved portion LX The distance t from the junction point P of the curved portion LX and the wedge-shaped portion WG and the apex of the circular arc (cell gap B) of the curved portion LX, the maximum thickness A of the optical path changing lens LPL, and the optical path changing lens LPL The distance between the viewpoint side surface and the display surface of the display panel (t + B: total distance)
LA... Frame width R on the butting side... Radius .theta.0 of the curve portion LX. Here, the plate thickness t2 opposite to the butted end plate thickness t1 of the optical path changing lens LPL is both 0.5 mm.

  That is, the optical path changing lens has a cross-sectional shape corresponding to one side of the display panel, and one side (wedge-shaped portion WG in FIG. 4) has an inclination with respect to the display panel on the surface facing the display panel. It has a linear shape, and the other side (curved portion LX in FIG. 4) has a curved shape. Further, it can be seen that the surface opposite to the surface facing the display panel has a shape parallel to the display area of the display panel.

  As described above, the first optical path changing lens and the second optical path changing lens in Example 1 are in the display area of the display panel in a portion where the distance in the direction orthogonal to the display surface from the butted boundary is large. The optical path of the optical image of the displayed image is matched with a uniform change region, that is, a wedge-shaped portion WG that changes linearly in a direction orthogonal to the boundary between the butted boundaries and changes upward in the direction orthogonal to the display surface of the butted boundary. In a portion where the distance in the direction orthogonal to the boundary is small, the optical image of the frame on the optical path of the optical image of the image displayed in the display area of the display panel is condensed linearly upwards perpendicular to the display surface of the butt boundary. It has a non-uniform change region, that is, a curved portion LX, in which the optical path is changed so as to be condensed and condensed.

  It is preferable that the characteristics of the optical path change of the first optical path changing lens and the second optical path changing lens are axisymmetric with respect to the butt boundary from the viewpoint of the balance of the display image by both. The wedge-shaped portion WG has a direction perpendicular to the display surface, and the outer surface on the display surface side of the cross section has a larger distance in the direction orthogonal to the display surface from the butted boundary. The inclined surface increases the distance between The curved portion LX is in a direction perpendicular to the display surface, and the outer shape of the cross section of the display surface is an arc. However, the present invention is not limited to this, and an elliptical arc, a normal arc, or a curve having a continuous unequal curvature is used. can do.

  FIG. 6 is a partial cross-sectional view for explaining an example of a structure for fixing the optical path changing lens to the display panel on the opposite side to the butted side. The optical path changing lens LPL is bonded to the display panel PNL so as to have a predetermined interval by the spacer SPB. The spacer SPB can also be installed around the side of the display panel PNL. It can also be installed on the butt side of the display panel. The shield frame SHD constituting the frame is often formed of a metal such as stainless steel. In that case, part of the light from the display panel is reflected by the side surface of the shield frame SHD, and is emitted in the direction of the viewpoint through the optical path changing lens LPL. As a result, bright lines are generated along the frame and display quality is deteriorated.

  In this configuration, the inner edge (display area side) of the spacer SPB on the opposite side to the butted side is advanced, ie, protrudes toward the display area side from the inner edge of the corresponding frame of the display panel PNL. In other words, the inner edge of the spacer SPB overhangs on the display surface. With this configuration, the reflected light on the inner surface of the frame SHD is prevented from reaching the optical path changing lens. This structure can be similarly applied to other sides.

  FIG. 7 is a diagram for explaining the operation of the bright line prevention structure shown in FIG. In this example, it is assumed that the display device uses a liquid crystal display panel as the display panel. A light guide plate GLB constituting a backlight is disposed on the back surface of the liquid crystal display panel PNL, and the liquid crystal display panel PNL and the light guide plate GLB are integrated by a shield frame SHD. The display area AR of the liquid crystal display panel PNL is located slightly inside the inner edge of the shield frame SHD. The outer periphery of the display area AR is a non-display area, that is, a frame.

  In FIG. 7, h is the thickness of the inner surface of the shield frame SHD, H is a distance perpendicular to the display surface between the display surface and the viewpoints VP1 and VP2, M is a distance overhanging the spacer SPB, and α and β are viewpoints VP1, Angle of a straight line to see the inner edge of the spacer SPB from VP2, L and l are distances parallel to the display surface between the inner edge of the spacer SPB and the viewpoint VP, and C is an extension of a straight line connecting the viewpoint VP1 and the protruding edge of the spacer SPB. A distance parallel to the display surface between a point intersecting the surface and the protruding edge of the spacer SPB, N is an extension line of a straight line connecting the inner edge of the shield frame SHD and the viewpoint VP1 and the protruding edge of the spacer SPB intersects the display surface. It is a distance parallel to the display surface between the points.

  Here, when h = 0.3 mm, H = 200 mm, and M = 0.8 mm, β≈20 ° 33 ′ and L≈533 mm. In addition, when α = 45 °, l = 200 mm, C = 0.3 mm, and N = 0.5 mm, and M = 0.8 mm up to the so-called nominal 10-inch class, the overhang of the spacer SPB is caused to be in the display area. There is no risk of hiding the AR. Similar calculations can be made for the other set values.

  FIG. 8 is a perspective view of an inclined fiber lens for explaining Example 2 of the present invention. Moreover, FIG. 9 is a figure explaining the state which installed the inclination fiber lens shown in FIG. 8 on the display panel. The tilted fiber lens SFL is a rectangular plate-like body obtained by cutting a fiber prism made of a large number of fibers that are focused and joined in parallel and linearly at a predetermined angle with respect to the major axis of the prism.

  As shown in FIG. 9, the inclined fiber lens SFL is placed with one surface (light incident surface) in contact with the display surface of the display panel. The side surface on the butt side with the other display panel is inclined at an angle γ so as to fall down on the other display panel side. On the other hand, the side surface opposite to the butt side with the other display panel is also inclined in parallel with the side surface on the butt side at the same angle γ. When the thickness of the inclined fiber lens SFL is t and the width of the frame is LB, the angle γ is tan γ = t / LB. That is, the angle γ is determined by the relationship between the thickness of the inclined fiber lens SFL and the frame width LB.

  FIG. 10 is a schematic cross-sectional view showing the entire display device of Example 2 in which the display panels of the two butted display panels are covered with an inclined fiber lens. Inclined fiber lenses SFL1 and SFL2 are superimposed on the two display panels PNL1 and PNL2, respectively. Then, the one sides of the inclined fiber lenses SFL1 and SFL2 are brought into contact with each other. And it arrange | positions so that the upper edges of the sides which fall in the other display panel side may mutually contact. With this configuration, the light image in the non-display area at the abutting portion of the two abutted display panels is excluded by the inclined fiber lens and does not reach the viewpoint VP. The second embodiment is easier to make thinner and smaller than the first embodiment.

  SUB1A, SUB1B ... first substrate, SUB2A, SUB2B ... second substrate, DDR1, DDR2 ... data driver, GDR1, GDR2 ... gate driver, PNL1 and PNL2 ... display panel, AR1 , AR2 ... display area, LPL1, LPL2 ... optical path changing lens, SHD ... shield frame, BE ... butting part of display panel, BW ... non-display area.

Claims (10)

A display panel having a frame on the outer periphery of the display area, and a display device having an optical path changing lens disposed above the display panel,
The optical path changing lens is supported by a spacer arranged on a frame of the display panel, and the spacer is arranged in a U shape on three sides on the frame, and at least on one side where no spacer is arranged. The opposing spacer portion is a display device that is disposed to advance toward the display area from the inner edge of the frame. The display device according to claim 1 .
When the observer observes the display device from one side where the spacer is not arranged by disposing the upper spacer on the frame forward from the inner edge of the frame toward the display area, the display of the frame is displayed. A display device that prevents reflected light from an inner surface, which is a step portion from the region, from reaching the optical path changing lens. A first display panel and a second display panel each having a display surface having a frame on the outer periphery of the display area, and a frame on one side of the second display panel matched to a frame on one side of the first display panel A display device in which the display surfaces of the first display panel and the second display panel are arranged to form a common large-size display surface,
Each side is abutted along the abutted boundary between the first display panel and the second display panel, and is installed so as to cover at least each display area of the first display panel and the second display panel. A first optical path changing lens and a second optical path changing lens,
The first optical path changing lens and the second optical path changing lens are configured so that an optical image of the frame in a direction orthogonal to the display surface from the butted boundary is orthogonal to the display surface of the butted boundary. It has a lens shape that changes the optical path so as to be condensed into a linear shape,
The first optical path changing lens and the second optical path changing lens have a wedge-shaped portion at a portion having a large distance in the direction orthogonal to the display surface from the butted boundary, and the wedge-shaped portion is the display surface. The outer shape of the cross section in the direction perpendicular to the display surface is an inclined surface, and the greater the distance from the butted boundary in the direction orthogonal to the display surface, the greater the distance between the inclined surface and the display surface. Is a wedge-shaped cross section
The curved portion has a curved portion at a small distance in the direction orthogonal to the butted boundary, the curved portion is in a direction perpendicular to the display surface, and the outer shape of the cross section of the display surface protrudes toward the display panel. A display device characterized by a curved shape.   4. The display device according to claim 3, wherein the optical path changing characteristics of the first optical path changing lens and the second optical path changing lens are axisymmetric with respect to the butt boundary. Spacers are provided between the end portions of the first optical path changing lens and the second optical path changing lens except for the butting boundary, and the corresponding frames of the first display panel and the second display panel. ,
The inner edge of the spacer advances from the inner edge of each corresponding frame of the first display panel and the second display panel to the display area side, and the reflected light on the inner surface of the frame is the first optical path changing lens. The display device according to claim 3, wherein the display device is disposed at a position that prevents the second optical path changing lens from reaching the second optical path changing lens.   The display device according to claim 3, wherein a surface of the first optical path changing lens and a surface of the second optical path changing lens are continuous.   The display device according to claim 3, wherein the first display panel and the second display panel are liquid crystal display devices. A first display panel and a second front panel, each having a display surface having a frame on the outer periphery of the display area, and a frame on one side of the second display panel matched to a frame on one side of the first display panel A display device that is positioned so that the display surfaces of the first display panel and the second display panel form a common large-size display surface,
The upper edges of one side abut each other along the abutted boundary between the first display panel and the second display panel, and at least each display region of the first display panel and the second display panel is provided. A first tilted fiber lens and a second tilted fiber lens, each of which is arranged to cover,
The first inclined fiber lens and the second inclined fiber lens are rectangular plate shapes obtained by cutting a fiber prism made of a large number of parallel and linearly converged fibers at a predetermined angle with respect to the major axis of the prism. Body,
The lower edge of the one side of the first inclined fiber lens and the second inclined fiber lens that are abutted is positioned on the display area side from the inner edge of the frame of the respective abutted side. apparatus.   The lower edge of the opposite side of the one side of the first inclined fiber lens and the second inclined fiber lens that faces each other is a frame of each side of the first display panel and the second display panel that are brought into contact with each other. The display device according to claim 8, wherein the display device is located closer to the display area than an inner edge of a frame located on the opposite side of the frame.   The display device according to claim 9, wherein the first display panel and the second display panel are liquid crystal display devices.

Images