JP2012063466A - Multi-display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-display device that is a simple configuration and low manufacturing cost, prevents heat accumulation, and prevents image quality degradation resulting from exposure of non-display part such as a trim.SOLUTION: Each of adjacent trims of a plurality of liquid crystal panels 11, which are arranged in rows and columns in a plane, have on the peripheral edges trims 16, which are non-display parts, and have display areas for image display further inside than the trims 16 in plane. Each trip 16 is provided with a reflecting member 15 in the shape of a triangular prism having reflecting faces 14a and 14b for reflecting light emitted from a display area further inside than each trim 16 in plane.

Description

  The present invention relates to a multi-display device in which a plurality of display panels are arranged adjacent to each other to form one large screen.

  In recent years, as information displays and business displays, for example, four or nine display panels are arranged adjacent to each other in the vertical and horizontal directions to form one large screen, and from one personal computer, DVI (Digital Visual Interface) or By sending a screen signal obtained by dividing one image to each display panel connected via an interface such as an analog RGB (Red Green Blue) video signal or HDMI (High-Definition Multimedia Interface), Images are displayed individually, and a series of images can be displayed as a whole screen.

  Such a multi-display device can easily construct a large screen, which is also referred to as a so-called multi-screen, by a plurality of display panels, but cannot display an image on the frame of each display panel. In the area corresponding to the joints or joints between the adjacent display panels, lines appear on the display screen as if they were in a grid pattern, and the display quality is degraded.

  A conventional technique for solving such a problem is proposed in Patent Document 1, for example. In the prior art described in Patent Document 1, in order to solve the problem that when one image is projected greatly using four screens, the image is divided into a lattice shape, the drive is independent from each other. In a multi-screen display device in which a large screen is formed by two-dimensionally arranging display screens of a plurality of image display devices that display an image driven by a video signal through a system, a boundary between adjacent display screens A multi-display device in which auxiliary displays are arranged in the area has been proposed.

  In this prior art, a light emitting diode is used for an auxiliary display device provided in a frame, and the display is driven by an average luminance in the vicinity of a screen across a non-display area. However, since electronic components such as a liquid crystal color display element, a light emitting diode, and electroluminescence are controlled on the frame, there are problems that the manufacturing cost is high and the power consumption is large.

  Moreover, the prior art which solves optically without using the above electronic components is disclosed by patent document 2, 3, for example. In these prior arts, a configuration has been proposed in which screen display light is refracted by using a convex lens and a concave lens arranged on the screen, and is extended and displayed on the frame. In the prior art described in Patent Document 2, a plurality of plasma display panels (abbreviated as PDPs) are arranged vertically and horizontally, and the display screens of the PDPs are connected to display as one large screen. A first multi-lens and a second multi-lens composed of a matrix of convex lens groups are arranged on the front surface of the lens to form an erect image of a display image to be displayed on the display screen of the PDP, and the front surface of the second multi-lens Further, a concave lens is arranged, and the above-mentioned erect image is enlarged and projected on a transmission screen arranged on the front surface of a PDP or the like, and images displayed on a plurality of PDPs are displayed as one continuous image. Multi-display devices that can be used have been proposed.

  Further, in the prior art described in Patent Document 3, a multi-projection screen is formed on a multi-projection screen in which a large screen is formed by stacking screen blocks on which a screen on which an image is projected is mounted on the front surface. In order to make the joint inconspicuous, a multi-display device is proposed in which a lens-shaped transparent screen having a convex lens structure at the periphery and a flat plate at the center is provided on the light exit side of each parallel flat screen block on which the image is projected.

  However, in order to implement each of the prior arts of these Patent Documents 2 and 3, it is necessary to process a concave lens having a size covering the screen and a side end of an acrylic plate having the same size as the screen into a lens shape, The larger the display device, the more expensive parts are required, and heat is accumulated between the display screen and the lens.

  As another conventional technique, for example, Patent Documents 4, 5, and 6 propose that a bundle of optical fibers is used to shift the screen display onto the frame so that the frame as a non-display portion is not visible. ing. In the prior art described in Patent Document 4, in a multi-display device having a non-display portion (joint) on the outer periphery of the display, a multi-display device including an optical fiber plate having an optical axis inclined on the light emitting surface of the display is disclosed. Proposed.

  In the prior art described in Patent Document 5, a displacement unit is provided on the front surface of a flat display unit having a display unit and a frame surrounding the display unit, and is displayed on the display unit by the displacement unit. There has been proposed a multi-display device capable of forming a large screen without a border line by a frame by integrating the divided screens by shifting the divided screens in a two-dimensional direction.

  Furthermore, in the prior art described in Patent Document 6, a projection unit is provided in parallel with a plurality of projectors, and a light guide similar to this is arranged in the same manner as the projector to form a screen unit. The image light can be projected from the corresponding projector onto the light input end surface, and the image light output end surface, which is the end surface on the opposite side of the light guide, is biased toward the center side with respect to the image display surface. There has been proposed a multi-display device that forms a unified image display surface in which no frame is generated. This prior art light guide is formed by bundling optical fibers, and an optical path between the image light input end face 1 and the image light output end face is provided closer to the center side of the unified image display face.

  In each of the prior arts described in Patent Documents 4 to 6, a bundle of optical fibers corresponding to the number of pixels is required to realize the multi-display device according to the prior art, and the manufacturing cost is high. There is a problem of becoming.

JP-A-3-38982 Japanese Patent Laid-Open No. 10-2222095 JP 2000-180964 A JP-A-9-37194 JP 10-39780 A JP 2004-177632 A

  An object of the present invention is to provide a multi-display device that has a simple configuration, is inexpensive in manufacturing cost, does not cause heat accumulation, and can prevent deterioration in image quality due to a non-display portion such as a frame. It is.

The present invention includes a plurality of display panels that are arranged adjacent to each other and are provided with a display area that displays an image and a non-display portion that surrounds the display area.
A multi-display device comprising a reflection member provided on the non-display portion and having a reflection surface for reflecting light emitted from the display region.

  Moreover, the reflective member of the present invention comprises a triangular prism-shaped member, and the reflective surface is formed on two surfaces protruding from the non-display portion of the triangular prism-shaped member.

  Furthermore, the reflective member of the present invention is composed of a triangular prism-shaped member, the reflective surface is formed on the two surfaces protruding from the non-display portion of the triangular prism-shaped member, and is connected to the reflective portion. It has the clamping part clamped by each adjacent side part, It is characterized by the above-mentioned.

  Furthermore, the triangular prism-shaped member of the present invention has three surfaces extending in parallel along the non-display portion, one of the three surfaces is disposed facing the non-display portion, and the remaining two The reflective surface is formed on the surface.

Furthermore, the reflecting member of the present invention is fixed to each adjacent non-display part.
Furthermore, the reflecting member of the present invention is fixed to one of the adjacent non-display portions and mounted on the other non-display portion.

  Furthermore, the present invention is characterized in that a belt-like spacer is provided between the reflecting member fixed to one non-display portion and the other non-display portion.

  Further, the present invention is characterized in that one non-display portion has a larger width than the other non-display portion.

  Furthermore, the present invention is characterized in that the reflecting surface of the reflecting member is provided at a different angle with respect to the surface of the display area for each position of the non-display portion.

  According to the present invention, each non-display portion of the plurality of display panels arranged side by side is provided with the reflecting member having the reflecting surface that reflects the emitted light from the display area. Thus, it is possible to prevent the non-display portion from being exposed linearly on the display screen in a state where the multi-screen is constructed, and to improve the display quality. In addition, since the reflecting member is realized by a mechanical part having a reflecting surface and does not use an electronic part or an optical part such as an optical fiber as in the prior art, low power consumption that does not expose a non-display part at a low manufacturing cost. The multi-display apparatus can be realized.

  Further, according to the present invention, since the reflecting member is formed on the two surfaces protruding from each non-display portion of the triangular prism-shaped member, the display light on the display screen on both sides of each non-display portion is sent to each reflecting surface. To prevent each non-display portion from being exposed linearly, and the display image of each display region adjacent through each non-display portion is visually recognized as a substantially continuous image. be able to.

  Further, according to the present invention, the reflecting member is sandwiched between the triangular prism-shaped reflecting portion in which the reflecting surfaces are formed on the two surfaces protruding from the non-display area, and the side portions adjacent to each other of each display panel. Therefore, the reflecting member can be easily and reliably provided in a state where the reflecting member is accurately positioned on each non-display portion of each display panel.

  Further, according to the present invention, the reflecting member is composed of a triangular prism-shaped member having a reflecting surface formed on two surfaces extending along each adjacent non-display portion, and is fixed to each adjacent non-display portion. The reflecting member can be easily attached to each non-display portion with high strength.

  Further, according to the present invention, the reflecting member is formed of a triangular prism-like member having a reflecting surface formed on two surfaces extending along each adjacent non-display portion, and is fixed to one of the adjacent non-display portions, and Since it is mounted on the other of the non-display portions, it is possible to allow relative displacement of each non-display portion in the approaching / separating direction.

  Further, according to the present invention, since the reflecting member is fixed to one non-display portion and the spacer is provided between the reflecting member and the other non-display portion, each non-display portion is displaced from a common plane. Even in the state, the reflecting member can be installed on each non-display portion.

  Further, according to the present invention, since one non-display portion is wider than the other non-display portion, the reflecting member can be bonded to the one non-display portion with high strength.

  Furthermore, according to the present invention, it is possible to prevent a problem that the frame is partially exposed in the entire screen of the multi-display device, and to realize a high-quality display image without a sense of incongruity.

It is sectional drawing of the multi-display apparatus 10 which shows embodiment of this invention. It is a perspective view which simplifies and shows the multi-display apparatus 10 of FIG. It is sectional drawing seen from the cut surface line III-III of FIG. 4 is a partial enlarged perspective view showing a reflecting member 15. FIG. It is a partial perspective view which shows the state in which the reflection member 15 was installed in the two adjacent frames 16. FIG. 2 is a partial perspective view showing a state in which a reflecting member 15 is installed on a frame 16 on the outer side of each liquid crystal panel 11. FIG. 6 is a diagram illustrating an angle θ formed by the image display surface of each liquid crystal panel 11 and the reflection surfaces 14a and 14b of the reflection member 15. FIG. It is a figure which shows angle (theta) which the image display surface of each liquid crystal panel 11 and the reflective surface 14a of the reflective member 15a comprise. FIG. 9A is a front view showing a display state of the multi-display device 10, FIG. 9A shows a display state of the screen when the reflecting member 15 is not provided on the frame 16, and FIG. It is a figure which shows the display state of a screen when the member 15 is provided. It is a partial cross section figure which shows the multi-display apparatus 10b which comprises the reflection member 15b of other embodiment of this invention. It is a partial cross section figure which shows the multi-display apparatus 10c which comprises the reflection member 15c of further another embodiment of this invention. It is a partial cross section figure which shows the multi-display apparatus 10d which comprises the reflection member 15d of further another embodiment of this invention. It is a perspective view which shows the multi-display apparatus 10e of other embodiment of this invention. FIG. 14 is an enlarged plan view of an intersection A in FIG. 13. It is a figure which shows the structure of the edge part 115 arrange | positioned at the cross | intersection part A side of the reflection member 15 shown in FIG. 14, FIG. 15 (1) is a top view of the edge part 115 of the reflection member 15, and FIG. ) Is a side view of the end portion 115 of the reflecting member 15, and FIG. 15 (3) is a front view of the end portion 115 of the reflecting member 15 as viewed from the right side of FIG. 15 (2). It is a figure which shows the joining form of each reflection member 15 in the cross | intersection part A, FIG.16 (1) is a disassembled perspective view which shows the 1st joining form of each reflection member 15 in the cross | intersection part A, FIG.16 (2). FIG. 5 is an exploded perspective view showing a second joining form of each reflecting member 15 at an intersection A. It is a top view of the reflective member 115 for cross | intersection used for the multi-display apparatus 10f of further another embodiment of this invention, and its vicinity. FIG. 18A is a plan view of the intersection reflecting member 115, FIG. 18B is a side view of the intersection reflecting member 215, and FIG. (3) is the front view which looked at the reflection member 115 for cross | intersection parts from the right side of FIG. 18 (1). It is the top view of the reflection member 315 for cross | intersection used for the multi-display apparatus 10g of further another embodiment of this invention, and its vicinity. It is a perspective view of the reflection member 315 for cross | intersection part and its vicinity.

It is sectional drawing in the cut surface line C1-C1 of FIG. It is sectional drawing in the cut surface line C2-C2 of FIG. It is a figure for demonstrating the mounting state of the reflection member 15 which set the reflection direction.

  1 is a cross-sectional view showing a multi-display apparatus 10 according to an embodiment of the present invention, FIG. 2 is a simplified perspective view of the multi-display apparatus 10 shown in FIG. 1, and FIG. 3 is a sectional line III of FIG. FIG. 4 is a partial enlarged perspective view showing the reflecting member 15. 2 and 3 are shown in a simplified manner for easy illustration.

  In the present embodiment, the multi-display device 10 includes a plurality of liquid crystal panels 11 as display panels arranged side by side in a plane, a chassis 12 on which each liquid crystal panel 11 is mounted, a housing 13, Mounted on the liquid crystal panel 11 from the display surface side (upper side in FIG. 1) and provided on a frame 16 that is a non-display portion that holds each liquid crystal panel 11 in each chassis 12 and each frame 16 adjacent to each other on each liquid crystal panel 11 The reflection member 15 includes reflection surfaces 14 a and 14 b that reflect the emitted light in the display area on the inner side of each frame 16, the optical sheet 40, and the diffusion plate 41.

  In the present embodiment, the multi-display device 10 is realized by a display device that displays an image on a display screen by outputting image information in a television receiver or a personal computer. Each liquid crystal panel 11 is formed in a flat plate shape. In the liquid crystal panel 11, two directions in the thickness direction Z are defined as a front side Z1 and a back side Z2.

  The liquid crystal panel 11 can display an image on the front surface 18 side by the light of the backlight 23 from the back side by the above-described liquid crystal display element. The chassis 12 is a base used for fixing the liquid crystal panel 11 and is disposed on the back surface 19 side of the liquid crystal panel 11.

  The reflecting member 15 is made of, for example, a triangular prism-shaped acrylic resin, and has a triangular prism-shaped reflecting portion 28 in which reflecting surfaces 14a and 14b are formed on two substantially V-shaped surfaces extending along each adjacent frame 16; It has a clamping part 29 that is connected to the reflecting part 28 and is clamped by the side parts of the frame 16 adjacent to each other of each liquid crystal panel 11. Each of the reflecting surfaces 14a and 14b is formed by, for example, vapor deposition of a metal thin film such as an aluminum alloy on the two surfaces of the reflecting portion 28, and this metal thin film is subjected to various kinds of processes such as white mirror finishing, mirror processing, and plating treatment. By processing, it is formed into a mirror surface.

  The reflecting portion 28 and the sandwiching portion 29 are connected by, for example, forming a concave groove 34 in the longitudinal direction from the bottom surface of the reflecting portion 28 toward the top and fitting the sandwiching portion 29. The reflecting portion 28 has a regular triangular cross section, and is formed of a rod-like body that extends over the entire length of a portion that forms one side of each liquid crystal panel 11 of each frame 16. The sandwiching portion 29 is a long material having an L-shaped cross section, and may extend over the entire length of the reflecting portion 28, or a plurality of members shorter than the entire length of the reflecting portion 28 may be connected. Good. The sandwiching part 29 may be made of an acrylic resin like the reflecting part 28, or may be made of other materials such as polyvinyl chloride and an aluminum alloy. By forming the sandwiching portion 29 in an L shape in this way, the sandwiching portion 29 is sandwiched by the frame 16 from both sides and locked from the rear side by the frame body 21 and the chassis 12 to prevent the sandwiching portion 29 from being removed. The reflecting member 15 can be reliably positioned and held on each frame 16. Moreover, the clamping part 29 may be formed in an inverted T shape in cross section in other embodiments. By forming the cross-section of the sandwiching portion 29 in an inverted T shape, the sandwiching portion 29 is sandwiched and secured by the frame 16 from both sides, and the reflecting member 15 is reliably positioned on each frame 16. It can be secured and kept stable. Moreover, the clamping part 29 may be formed in an I-shaped cross section in other embodiments. Since the cross section of the sandwiching portion 29 is formed in an I-shape, the multi-display can be inserted and attached between the side portions of the frame 16 adjacent to each other after the multi-display is installed.

  Such a reflective member 15 prevents each frame 16 that is a non-display portion from being linearly exposed on the display screen in a state where the liquid crystal panels 11 are assembled and the multi-display device 10 is constructed. Can be improved. Further, the reflecting member 15 is realized by a mechanical part having the reflecting surfaces 14a and 14b, and does not use an electronic part such as the prior art or an optical part such as an optical fiber. The multi-display device 10 with less power consumption that is not exposed can be realized.

  Further, since the reflecting member 15 is formed of a triangular prism-like member having reflecting surfaces 14a and 14b formed on two surfaces extending along each adjacent frame 16, the display light on the display screens on both sides of each frame 16 is transmitted to Each display screen that is reflected by the reflecting surface and is adjacent to each other through each frame 16 can be visually recognized as a series of substantially continuous images, and each frame 16 is exposed in a line. Can be prevented. Therefore, when the multi-display device 10 is viewed from the front, images near the frame 16 are reflected by the reflecting surfaces 14a and 14b on the top, bottom, left and right, respectively, and the reflected images enter the eyes, thereby making the frame line inconspicuous. be able to. In particular, in the present embodiment, the cross section of the reflecting portion 28 of the reflecting member 15 is formed in a triangular prism shape of a regular triangle, and the line of the frame 16 can be concealed so as to be inconspicuous.

  Further, the reflecting member 15 is connected to the reflecting portion 28 having a triangular prism shape in which reflecting surfaces 14 a and 14 b are formed on two surfaces extending along the adjacent frame 16, and adjacent to each other of the liquid crystal panels 11. Therefore, the reflecting member 15 can be provided easily and reliably in a state where the reflecting member 15 is accurately positioned on each frame 16 of each liquid crystal panel 11.

  Next, the configuration of the multi-display device 10 provided with the reflecting member 15 will be described. The housing 13 is preferably composed of a plurality of members that assist in fixing the liquid crystal panel 11 and can be divided. The housing 13 includes a frame body 21. The frame body 21 includes a mounting portion 22 and a contact portion 24. The mounting portion 22 faces at least a part of the outer peripheral portion of the liquid crystal panel 11 when the liquid crystal panel 11 is viewed in the thickness direction Z from the back surface 19 side. The contact portion 24 contacts the outer peripheral portion from the outside in the surface direction of the liquid crystal panel 11. The frame 16 faces the outer peripheral portion of the liquid crystal panel 11 from the front surface 18 side, and sandwiches the outer peripheral portion together with the housing 13. As a result, the liquid crystal panel 11 is prevented from being displaced relative to the frame 16 toward the front surface 18.

  In the multi-display device 10, the frame 16 that surrounds the periphery of the liquid crystal panel 11 from the outside in the surface direction is a so-called narrow frame. For example, when used in a multi-display system, a plurality of multi-display devices 10 are arranged in one direction or in a matrix. At this time, the portion corresponding to the boundary between the multi-display devices 10 adjacent to each other, that is, the frame 16 is a non-display portion where no image is displayed.

  Although the reflection member 15 of the above-described embodiment has been described as having a width that conceals the frame 16 as a non-display portion, in other embodiments of the present invention, the liquid crystal that conceals the frame 16 and is inside the frame 16 is used. The panel 11 may be formed to have a width that covers the outer edge of the effective display area.

  Each image displayed on each liquid crystal panel 11 is originally an image continuous in the plane direction. However, if the width in the left-right direction in FIG. 1 as viewed from the Z direction of the frame 16 is large, the width of the non-display portion is large. turn into. In the multi-display device 10 used in the multi-display system, in order to reduce the width of the non-display portion as much as possible, it is necessary to narrow the frame 16 so that the width of the frame 16 is reduced. In the present embodiment, the multi-display device 10 is a narrowed liquid crystal display device having a length of 60 inches in the diagonal direction of each liquid crystal panel 11 and an aspect ratio of 9:16.

The backlight 23 includes a plurality of light sources arranged on the back side Z2 with respect to the liquid crystal panel 11. These light sources are attached to the chassis 12, and the light emitted from the light sources passes through the diffusion plate 41 and the optical sheet 40, and is further emitted to the front side Z1 from the multi-display device 10 through the liquid crystal panel 11. Used as display light for image display. As the light source, for example, a fluorescent tube such as the aforementioned cold cathode ray tube, LED (Light Emitting)
Various light emitting components such as a diode can be used.

  When the multi-display device 10 is viewed from the front to the back side Z2, the frame 16 and the liquid crystal panel 11 are formed in a rectangular shape. This rectangle may be placed vertically or horizontally in a normal posture when the multi-display device 10 displays an image, but is placed horizontally in the present embodiment.

  The frame 16 includes a flat plate portion 36 that is perpendicular to the thickness direction Z, and an outer peripheral portion 37 that is connected to the flat plate portion 36 at a right angle and surrounds the liquid crystal panel 11 from the outside in the surface direction. The flat plate portion 36 holds the liquid crystal panel 11 together with the stepped portion 57 of the frame body 21.

  The liquid crystal panel 11 includes two substrates 11a and is formed in a rectangular plate shape when viewed in the thickness direction Z. The liquid crystal panel 11 includes a switching element such as a TFT (Thin Film Transistor), and liquid crystal is injected into the gap between the two substrates. The liquid crystal panel 11 is a transmissive liquid crystal display device that exhibits a display function by being irradiated with light from a light source on the back side as a backlight. The two substrates are provided with a driver (source driver) and wiring for driving control of each pixel in the liquid crystal panel 11.

  The housing 13 is disposed on the back side of the liquid crystal panel 11 and on the front side of the chassis 12 and is attached to the chassis 12. Details of the structure of the housing 13 will be described later. In the housing 13, an optical sheet 40, a diffusion plate 41, a backlight 23, and a reflection sheet 43 are arranged. The light source of the backlight 23 includes, for example, a plurality of fluorescent tubes, and each fluorescent tube is attached to the chassis 12 by a lamp holder (not shown). The diffusion plate 41 is disposed on the front side Z1 from the fluorescent tube, and the optical sheet 40 is disposed on the front side Z1 from the diffusion plate 41. The diffusion plate 41 and the optical sheet 40 are arranged in parallel to the liquid crystal panel 11.

  The diffusion plate 41 prevents the luminance from being locally biased by diffusing the light emitted from the fluorescent tube in the surface direction. The optical sheet 40 includes a plurality of optical sheets. In the present embodiment, the optical sheet 40 includes two optical sheets 40a and 40b. The optical sheet 40 is made of a functional resin sheet to which various functions for improving display image quality are given. For example, it has a function of directing the traveling direction of light reaching from the back side through the diffusion plate 41 to the front side.

  In the diffusing plate 41, in order to prevent the luminance from being biased in the surface direction, the traveling direction of light includes many components in the surface direction as vector components. On the other hand, the optical sheet 40 converts the traveling direction of light including a large amount of vector components in the surface direction into the traveling direction of light including a large amount of components in the thickness direction Z. Specifically, the optical sheet 40 is formed with a large number of lens or prism-shaped portions arranged side by side in the surface direction, thereby reducing the degree of diffusion of light traveling in the thickness direction Z. Therefore, the brightness can be increased in the display by the multi-display device 10.

  The chassis 12 includes a flat bottom 39 that is perpendicular to the thickness direction Z, a side wall 44 that is continuous with the bottom 39 and rises from the bottom 39, and a part of the side wall 44 that is opposite to the part where the bottom 39 is continuous. And a flat plate-like flange portion 45 extending in parallel. The bottom 39 is formed in a rectangular shape when viewed in the thickness direction Z.

  The reflection sheet 43 is disposed in contact with at least a part of the front surface of the bottom 39 and the flange 45. The reflection sheet 43 may be disposed in contact with the side wall portion 44 or may be disposed without contact. The surface facing at least the front surface side of the reflection sheet 43 has a high reflectance with respect to light from the light source, ideally a reflectance of 100%.

  In the region of the front side Z1 of the first peripheral wall 62, a mounting part 22 that faces the front side Z1 and faces the outer peripheral part of the liquid crystal panel 11, and a front side Z1 that is more outward in the plane direction than the mounting part 22 A contact portion 24 that protrudes and contacts the liquid crystal panel 11 from the outside in the surface direction is formed. The mounting portion 22 is a portion that sandwiches the outer peripheral portion of the liquid crystal panel 11 together with the flat portion 36 of the frame 16. Therefore, it is necessary for the mounting portion 22 to surely face the outer peripheral portion of the liquid crystal panel 11, and the mounting portion 22 facilitates the realization of a narrow frame as the width in the plane direction is set to be narrower. Can do.

  Regarding the mounting portion 22 that supports the outer peripheral portion that forms each side of the liquid crystal panel 11, the dimension of the mounting portion 22 in the thickness direction Z and the direction perpendicular to the extension of each side is referred to as a “width dimension b1”. As an example of the multi-display device 10, for example, in the case of a 60-inch multi-display device 10, the image display area of the liquid crystal panel 11 is approximately 133 cm in the long-side direction X and approximately 75 cm in the short-side direction Y. It is. In this case, the width dimension b1 of the mounting portion 22 is set to about 3 mm.

  The frame body 21 is connected to a stepped portion 57 on which the outer peripheral portions of the optical sheet 40 and the diffusion plate 41 are mounted, and from the outer peripheral portion of the stepped portion 57 to the rear side Z2, and the side wall portion 44 of the chassis 12 is connected to the inner peripheral surface side. And a second peripheral wall portion 58 that is connected to the chassis 12 by screws or the like, and a first peripheral wall portion 62 that rises from the step portion 57 to the front side Z1.

  In the frame body 21, the second peripheral wall portion 58 is formed in parallel to the thickness direction Z of the liquid crystal panel 11, and is connected to the inner end portion in the surface direction of the step portion 57 with respect to the liquid crystal panel 11, and extends to the back side Z 2. Formed.

  The first peripheral wall portion 62 and the second peripheral wall portion 58 are formed in parallel with the thickness direction Z of the liquid crystal panel 11, and are connected to the end portion of the stepped portion 57 that is outward in the surface direction with respect to the liquid crystal panel 11, and on the front side. It is formed to extend. The front surface side Z1 of the first peripheral wall portion 62 faces the front surface side Z1, and protrudes to the front surface side Z1 on the outer side in the plane direction from the mounting portion 22 facing the outer peripheral portion of the liquid crystal panel 11, A contact portion 24 that contacts the outer edge of the liquid crystal panel 11 from the outside in the surface direction is formed. The mounting portion 22 of the frame body 21 is a portion that sandwiches the outer peripheral portion of the liquid crystal panel 11 in cooperation with the flat plate portion 36 of the frame 16. Therefore, the mounting portion 22 is selected to have a width dimension b1 that can be reliably opposed to the outer peripheral portion of the liquid crystal panel 11 and can be stably supported to reduce the frame.

  In the thickness direction Z of the liquid crystal panel 11, the width dimension b <b> 2 of the contact portion 24 is set to be substantially the same and slightly smaller than the thickness dimension T of the liquid crystal panel 11. This prevents the flat plate member of the frame 16 from coming into contact with the outer peripheral portion of the liquid crystal panel 11 and prevents the liquid crystal panel 11 from rattling in the thickness direction Z when sandwiching the liquid crystal panel 11 together with the mounting portion 22. it can.

  FIG. 5 is a partial perspective view showing a state in which the reflecting member 15 is installed on two adjacent frames 16, and FIG. 6 shows a state in which the reflecting member 15 is installed on the outer frame 16 of each liquid crystal panel 11. It is a one part perspective view shown. In the multi-display device 10 described above, the reflecting member 15 is installed on the frame 16 of two liquid crystal panels 11 adjacent on the same plane as shown in FIG. As shown in FIG. 6, the frame 16 arranged outward in the plane direction includes a reflecting member 15 a having a right-angled triangular cross section having a reflecting surface 14 a only on one surface corresponding to the oblique side facing the display screen. Adhered by a double-sided adhesive tape 31 is provided. Each reflecting surface 14a, 14b of each reflecting member 15, 15a reflects the light emitted as indicated by the arrow A1 from the reflection target area 32 near the frame 16 of the display screen as indicated by the arrow A2, The frame 16 is not recognized by a viewer who visually recognizes the display screen from the front. The frame 16 is substantially concealed, and deterioration of display quality due to the frame 16 of the display image as the entire multi-display device 10 can be prevented. .

  The reflection member 15a provided on the frame 16 at the peripheral edge of the multi-display device 10 may be omitted in the other embodiment of the present invention when there is no hindrance on display.

  7 is a diagram showing an angle θ formed by the image display surface of each liquid crystal panel 11 and the reflection surfaces 14a and 14b of the reflection member 15, and FIG. 8 is an image display surface of each liquid crystal panel 1 and the reflection surface of the reflection member 15a. It is a figure which shows angle (theta) which 14a forms. The range of the angle θ with respect to the display screen of the reflecting surfaces 14a and 14b (generally, the suffixes a and b are omitted) of the reflecting member 15 is selected as 45 ° ≦ θ ≦ 90 °. The larger the angle θ is, the easier it is to reflect the display light in the vicinity of the frame 16. However, if the angle θ is increased too much, the protrusion height H of the reflecting portion 28 from the display screen is the width of the bottom surface that is bonded to the frame 16. The angle [theta] is preferably 60 [deg.] To 80 [deg.] Because it becomes larger than the dimensions and weakens structurally against bending loads due to external forces acting in the width direction (left and right direction in FIG. 7). For example, when the reflection surface 14 has an angle θ of 60 ° with respect to the display screen, the display image of the reflection target region 32 having a width dimension b4 (b4≈2 · b3) approximately twice the width b3 of the frame 16 is It can be displayed in about ½ size. Therefore, the reflected images reflected on the reflecting surfaces 14a and 14b are similar in display characteristics such as color tone and luminance to the display image of the reflection target area 32, and each liquid crystal panel 11 is compared with the case where the frame 16 is exposed. It is possible to prevent the frame 16 from being exposed linearly between the display screens.

  It should be noted that, on the frame 16, with respect to an inverted image, that is, an image displayed on the multi-display, when the reflection unit 28 is mounted so that the longitudinal direction thereof is up and down, the horizontally reversed image and the reflection unit 28 are long. When the liquid crystal panel 11 is mounted so that its direction is up and down, an upside down image is displayed. However, the size b3 of the frame 16 is set to the entire screen of each liquid crystal panel 11 due to the large screen and the narrow frame of each liquid crystal panel 11. Since it is a very fine range compared to the size, it is not noticeable even if it is inverted. Further, in the case of fine display of characters and the like, it is possible to prevent reverse display by arranging the frame 16 so that it does not lie on the frame line, that is, the frame 16 does not move to the reflecting surface 14.

  FIG. 9 is a front view showing a display state of the multi-display device 10. FIG. 9 (1) shows a screen display state when the reflecting member 15 is not provided on the frame 16, and FIG. 9 (2) shows a frame. FIG. 16 is a diagram showing a display state of a screen when a reflecting member 15 is provided on 16. As is apparent from FIG. 9B, the multi-display device 10 described above is disposed between the liquid crystal panels 11 adjacent to each other and on the outer periphery of each liquid crystal panel 11 by providing the reflecting member 15 on the frame 16. Each frame 16 can be prevented from recognizing a frame line as shown in FIG. 9A, and a high image display quality can be realized.

  FIG. 10 is a partial cross-sectional view showing a multi-display apparatus 10 including a reflecting member 15b according to another embodiment of the present invention. Note that the same reference numerals are given to portions corresponding to the above-described embodiments. In the present embodiment, the reflecting member 15b is composed of a triangular prism-like member having reflecting surfaces 14a and 14b formed on two surfaces extending along each adjacent frame 16, and the double-sided adhesive tape 30b is attached to each adjacent frame 16. Fixed by. With this configuration, the reflecting member 15b can be easily attached to each frame 16 with high strength.

  FIG. 11 is a partial cross-sectional view showing a multi-display device 10c including a reflecting member 15c according to still another embodiment of the present invention. Note that the same reference numerals are given to portions corresponding to the above-described embodiments. In the present embodiment, the reflecting member 15 c is formed of a triangular prism-like member having reflecting surfaces 14 a and 14 b formed on two surfaces extending along each adjacent frame 16, and a double-sided adhesive tape is attached to one of the adjacent frames 16. 30c and is mounted on the other of the non-display portions via a synthetic resin sheet body 30d that is a spacer, so even if the non-display portions are relatively displaced in the approaching / separating direction. The reflecting member 15c is fixed to the one frame 16 by the double-sided adhesive tape 30c, and is mounted on the other frame 16 via the sheet body 30d, and therefore follows the frame 16 on the side where the reflecting member 15 is fixed. And can slide on the sheet body 30d fixed to the other picture frame 16, allowing the relative displacement. Since one non-display portion is wider than the other non-display portion, the reflecting member 15c can be bonded to the one non-display portion with high strength.

  FIG. 12 is a partial cross-sectional view showing a multi-display device 10d including a reflecting member 15d according to still another embodiment of the present invention. Note that the same reference numerals are given to portions corresponding to the above-described embodiments. In the present embodiment, the reflecting member 15d is integrally formed as a structure that serves as the frame 16 and the frame body 21 described above. Also by this, it is possible to suppress or prevent the frame 16 from being recognized as a line as in the above-described embodiments, and the frame 16 and the reflecting member 15 can be manufactured simultaneously by integral molding. The manufacturing cost can be reduced.

  FIG. 13 is a perspective view showing a multi-display device 10e according to still another embodiment of the present invention, and FIG. 14 is an enlarged plan view of an intersection A in FIG. FIG. 15 is a diagram showing the structure of the end 115 arranged on the intersection A side of the reflecting member 15 shown in FIG. 14, and FIG. 15 (1) is a plan view of the end 115 of the reflecting member 15. 15 (2) is a side view of the end 115 of the reflecting member 15, and FIG. 15 (3) is a front view of the end 115 of the reflecting member 15 as viewed from the right side of FIG. 15 (2). In addition, since the structure of the edge part 115 of the reflection member 15 of this embodiment is applicable to all the reflection members 15 and 15a-15d of each above-mentioned embodiment, the reflection member 15 is demonstrated and the remaining reflection members Descriptions of 15a to 15d are omitted to avoid duplication.

  In the multi-display device 10 in which a plurality of (16 in the present embodiment) liquid crystal panels 11 are arranged in a matrix so as to form a common plane on each image display surface, the reflection member 15 is placed on each frame 16 as described above. And has a plurality of intersections A. In each intersection A, the end portions 115 of the respective reflecting members 15 are in contact with each other without any gap, so that the axis is symmetrical or centered with respect to a central axis L perpendicular to a common virtual surface including each image display surface in the intersection A. It is formed in a triangular pyramid shape symmetrical with respect to a virtual plane including the axis L.

  FIG. 16 is a diagram showing a joining form of each reflecting member 15 at the intersection A, and FIG. 16A is an exploded perspective view showing a first joining form of each reflecting member 15 at the intersection A. FIG. (2) is an exploded perspective view showing a second joining form of each reflecting member 15 at the intersection A. FIG. In the first joining form shown in FIG. 16 (1), each of the reflecting members 15 described above is arranged with a long reflecting member 15 that is continuous in at least the intersecting portion A in one direction on the one plane. The short reflecting member 15 is disposed in the other direction orthogonal to one direction, and each end 115 of the short reflecting member 15 is formed in a triangular pyramid shape. In the second joining mode, as shown in FIG. 16B, the end portions 115 of the four reflecting members 15 are formed in a triangular pyramid shape in axial symmetry with respect to the intersecting portion A.

  FIG. 17 is a plan view of the reflection member 115 for intersection and its vicinity used in the multi-display device 10f according to still another embodiment of the present invention, and FIG. 18 is a diagram showing the reflection member 115 for intersection. 18 (1) is a plan view of the reflecting member 115 for the intersection, FIG. 18 (2) is a side view of the reflecting member 215 for the intersection, and FIG. 18 (3) shows the reflecting member 115 for the intersection. It is the front view seen from the right side of (1). In the present embodiment, the intersection reflecting member 215 is used in which the end portions 115 of the four reflecting members 15 arranged in an axial symmetry are integrally formed. The intersection reflecting member 215 is formed in a triangular pyramid shape like the end portion 115, and each end portion on the opposite side with respect to the central axis L is arranged in a longitudinal direction of each linear reflecting member 15. An end face perpendicular to is formed.

  By using such a reflection member 215 for crossing portions, the crossing portion A can be easily positioned and arranged with respect to each linear reflection member 15, and the installation work can be facilitated. .

  FIG. 19 is a plan view of an intersection reflecting member 315 and its vicinity used in a multi-display device 10g according to still another embodiment of the present invention, and FIG. 20 is a perspective view of the intersection reflecting member 315 and its vicinity. FIG. 21 is a cross-sectional view taken along section line C1-C1 in FIG. 20, and FIG. 22 is a cross-sectional view taken along section line C2-C2 in FIG. In a multi-display device 10f according to still another embodiment of the present invention, a boundary portion between the end portions 115 is a curved surface 316 that is convexly curved toward the central axis L in place of the intersection reflecting member 215. .

  In such a reflection member 315 for intersection, since the boundary portion between the end portions 115 is formed by the curved surface 316, there is no substantially V-shaped broken line, and this broken line is not exposed in the reflected image, and the display quality is improved. Can be further improved. This is because, as shown in FIG. 21, the apex angle α of the triangle in the cross section perpendicular to the axis of each end portion 115 is an isosceles triangle having an acute angle of less than 45 °, for example, about 40 °. This is particularly advantageous when the constriction of the substantially V-shaped boundary is large.

  As still another embodiment of the present invention, the reflection surface of the reflection member is configured such that each frame 16 is not exposed to the image display surface of the display area at every position of the frame 16 whose apex angle α is a non-display portion. May be provided at different angles. This prevents a problem that the frame is partially exposed in the entire screen of the multi-display device, and realizes a high-quality display image that does not feel uncomfortable due to the partial exposure of the frame over the entire screen. Can do.

  In each of the embodiments shown in FIGS. 1 to 22 described above, the viewer's viewpoint B is most likely to gather on the frame 16 that is all the non-display portions of the multi-display devices 10, 10b to 10g, as shown in FIG. By mounting the reflecting member 15 whose reflection direction is set assuming the position, it is possible that each reflecting member 15 reflects the light from the display screen, and the frame 16 is exposed to lower the display quality. Can be reduced.

10, 10b to 10g Multi-display device 11 Liquid crystal panel 12 Chassis 13 Case 14, 14a, 14b Reflective surface 15, 15a, 15b, 15c, 15d Reflective member 16 Frame 18 Front surface 19 Rear surface 21 Frame body 28 Reflecting portion 29 Holding portion 36 Flat part 37 Peripheral part 39 Bottom part 40 Optical sheet 41 Diffusion plate 44 Side wall part Z1 Front side Z2 Back side

Claims (9)

A plurality of display panels arranged adjacent to each other and provided with a display area for displaying an image and a non-display portion surrounding the display area;
A multi-display device comprising: a reflection member provided in the non-display portion and having a reflection surface that reflects light emitted from the display region.   The multi-display apparatus according to claim 1, wherein the reflective member is formed of a triangular prism-shaped member, and the reflective surface is formed on two surfaces of the triangular prism-shaped member protruding from the non-display portion.   The reflective member is composed of a triangular prism-shaped member, and the triangular prism-shaped member is connected to the reflective portion in which the reflective surface is formed on two surfaces protruding from the non-display portion and the reflective portion, and is adjacent to each other of the display panels. The multi-display device according to claim 1, further comprising: a sandwiching portion sandwiched by each side portion.   The triangular prism-shaped member has three surfaces extending in parallel along the non-display portion, one surface of the three surfaces is disposed facing the non-display portion, and the remaining two surfaces are The multi-display apparatus according to claim 2, wherein a reflective surface is formed.   The multi-display device according to claim 1, wherein the reflecting member is fixed to each adjacent non-display portion.   5. The multi-display device according to claim 1, wherein the reflection member is fixed to one of the adjacent non-display portions and is mounted on the other of the non-display portions. .   The multi-display device according to claim 6, wherein a strip-shaped spacer is provided between the reflecting member fixed to one non-display portion and the other non-display portion.   The multi-display apparatus according to claim 6, wherein one non-display portion has a larger width than the other non-display portion.   The multi-display device according to claim 1, wherein the reflection surface of the reflection member is provided at a different angle with respect to the surface of the display region for each position of the non-display unit. .

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