WO2012147323A1 - 表示装置の製造方法、表示装置及びマルチディスプレイシステム - Google Patents
表示装置の製造方法、表示装置及びマルチディスプレイシステム Download PDFInfo
- Publication number
- WO2012147323A1 WO2012147323A1 PCT/JP2012/002765 JP2012002765W WO2012147323A1 WO 2012147323 A1 WO2012147323 A1 WO 2012147323A1 JP 2012002765 W JP2012002765 W JP 2012002765W WO 2012147323 A1 WO2012147323 A1 WO 2012147323A1
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- WIPO (PCT)
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- covering member
- display device
- display panel
- display
- light guide
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13336—Combining plural substrates to produce large-area displays, e.g. tiled displays
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
- G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
Definitions
- the present invention relates to a display device manufacturing method, a display device, and a multi-display system. More specifically, the present invention relates to a method of manufacturing a display device in which a light guide member is provided at the peripheral edge to constitute a multi-display system that displays seamless seamless images, and a multi-display system that displays seamless images. And a multi-display system for displaying seamless images.
- a light guide means such as a lens is arranged in a frame shape around the periphery of each display to make it difficult to visually recognize the joint (for example, Patent Document 1).
- a light guide member 450 is provided on the surface of the display panel 410 with an adhesive 451 such as an ultraviolet curable resin or a thermosetting resin as shown in FIG.
- an adhesive 451 such as an ultraviolet curable resin or a thermosetting resin as shown in FIG.
- the spacer 431 is provided so that the adhesive 451 does not sag and enter the module.
- the part 451A of the adhesive 451 is moved over the housing 430 of the display device. May sag inside.
- the adhesive 451A that has entered the module wraps around the back surface of the display panel 410 or adheres to a backlight (not shown) or a lens sheet (not shown). May decrease, or the display characteristics may deteriorate.
- An object of the present invention is to obtain a display device by attaching a light guide member without the adhesive dripping down inside the casing.
- a display panel is disposed inside a casing that includes a window portion and a window frame portion that surrounds the window portion and has a flange portion extending inward.
- a covering member that can be accommodated in the window part in a part in the thickness direction and whose remaining part in the thickness direction covers at least part of the accommodation part and at least a part of the outer surface of the flange part.
- the remaining portion of the covering member is disposed so as to cover at least a part of the outer surface of the flange portion. Therefore, in the second step, the light guide member is provided on the surface of the covering member. Even if the adhesive is spread by being disposed through the adhesive, the adhesive does not sag inside the housing.
- the manufacturing method of the display device of the present invention is a covering member with an extension part, further comprising an extension part extending outwardly in the first step, After the third step, it is preferable to further include a fourth step of cutting the extended portion from the covering member with the extended portion.
- the covering with the extending portion provided with the extending portion extending outward is laminated on the display panel surface, the covering with the extending portion is provided in the second step.
- Adhesive that hangs down from the extended portion of the covering member with the extended portion to the outside of the housing even when the adhesive is pushed and spread by arranging the light guide member via the adhesive on the peripheral portion of the surface of the member It is possible to prevent the casing and its surroundings from becoming dirty due to adhering to or scattering from the casing.
- the extension length of the extension part from a light guide member is 5 cm or more.
- the extension length of the extension part may be 5 cm or less, or may be larger than that.
- the extension length of the extension part is 5 cm or less, the amount of the extension part to be excised in the fourth step is reduced, and the cost can be reduced accordingly.
- the adhesive receiving part is suppressed because the adhesive is prevented from dripping from the peripheral part of the extension part even if the light guide member is disposed on the extension part. It is possible to prevent the exterior of the housing from becoming dirty and the peripheral portion from being dirty.
- the covering member includes a first covering member accommodated in the window portion, a second covering member that covers at least a part of the outer surface of the first covering member and the flange portion, and May be laminated together.
- the covering member includes a first covering portion accommodated in the window portion, and a second covering covering at least a part of the outer surface of the first covering portion and the flange portion. It may be formed integrally with the part.
- the covering member in the first step, may be laminated so as to cover at least the entire display region of the surface of the display panel.
- the covering member in the first step, may be laminated so as to cover a peripheral portion of the surface of the display panel in a frame shape.
- the display device manufacturing method of the present invention is such that, in the fourth step, the peripheral end surface of the covering member is the outer surface of the housing and the outer peripheral side of the light guide member.
- the extending portion may be cut out from the covering member with the extending portion so as to be flush with at least one of the side surfaces.
- the light guide member may be disposed on the adhesive so that the outer peripheral side surface thereof is flush with the outer surface of the housing.
- a covering member is attached so as to cover the peripheral edge of the surface of the display panel in a frame shape, and the covering member includes a first covering member accommodated in the window portion, and outer surfaces of the first covering member and the flange portion.
- the method for manufacturing a display device of the present invention further includes an inner extending portion in which the second covering member extends inward of the display panel.
- a covering member with an extending portion It is preferable that the method further includes a fifth step of cutting the inner extension portion from the covering member with the extension portion after the third step and independently of the fourth step.
- the light guide member is disposed such that its inner peripheral end surface is flush with the inner peripheral end surface of the first covering member
- the inner extension portion is arranged so that the inner peripheral end surface of the second covering member is flush with the inner peripheral end surface of the first covering member and the inner peripheral end surface of the light guide member. It is preferable to excise.
- the thickness of the first covering member is between the second covering member and the display panel when the inner extending portion is cut off with reference to the inner peripheral side end face of the first covering member in the fifth step. Therefore, the inner extension portion can be cut without damaging the surface of the display panel.
- the covering member may be formed of an acrylic resin.
- it can be set as the covering member which has the outstanding chemical resistance and abrasion resistance.
- the refractive index (1.49) of the acrylic resin has a small difference from the refractive index (about 1.5) of the glass or polarizing plate constituting the display panel, and the light refraction at the interface between the display panel and the covering member is reduced. It can be made small, and excellent display visibility can be obtained.
- the first covering member is preferably formed of a transparent elastic material.
- the transparent elastic material include an acrylic gel sheet, a silicone rubber sheet, and a polyurethane gel sheet.
- the transparent elastic material has adhesiveness
- the first covering member can be laminated on the surface of the display panel without using an adhesive, and the second covering is formed on the first covering member without using an adhesive. Members can be stacked.
- the transparent elastic material itself has an appropriate tackiness, it is excellent in the reworkability of the first covering member. Since the transparent elastic material has flexibility and elasticity, even when the thickness is large, the first covering member can be attached while suppressing bubbles and the like from entering between the display panel and the first covering member. . Furthermore, the elasticity which a transparent elastic material has can absorb the stress added between a display panel and a light guide lens, and can raise the intensity
- the second covering member is formed of a polyethylene terephthalate resin or a triacetyl cellulose resin. May be.
- the PET resin or TAC resin constituting the second covering member has a thickness of 10 to 100 ⁇ m, for example.
- the second covering member since the second covering member has flexibility, it is easy to stick, and bubbles and the like are suppressed from entering between the first covering member and the second covering member. Further, when the second covering member includes the extending portion and the inner extending portion, the extending portion and the inner extending portion are also formed of the PET resin or the TAC resin together with the second covering member. In the 4th step and the 5th step, the extending portion and the inner extending portion can be easily cut. Moreover, the 2nd coating
- the second covering member may be formed of a transparent elastic material.
- the transparent elastic material include an acrylic gel sheet, a silicone rubber sheet, and a polyurethane gel sheet.
- the second covering member since the second covering member has flexibility, it is easy to stick, and bubbles and the like are suppressed from entering between the first covering member and the second covering member. Further, when the second covering member includes the extending portion and the inner extending portion, the extending portion and the inner extending portion are also formed of the transparent elastic material together with the second covering member, so that the fourth step In the fifth step, the extending portion and the inner extending portion can be easily cut. Furthermore, the adhesive applied to the second covering member is less likely to spill due to the tackiness of the transparent elastic material. Moreover, the elasticity which a transparent elastic material has can absorb the stress added between a display panel and a light guide lens, and can raise the intensity
- the second covering member may be made of an acrylic resin. In this case, a second covering member having excellent chemical resistance and wear resistance can be obtained.
- the method for manufacturing a display device according to the present invention is suitable when the display panel has a diagonal length of 812 mm or more.
- the display device manufacturing method of the present invention is suitable when the display panel is a liquid crystal display panel in which a liquid crystal layer is provided between two substrates.
- the display device of the present invention includes a display panel,
- a light guide member that is adhered to the outer peripheral edge of the surface of the covering member with an adhesive and guides light emitted from the display panel to the outside of the display panel.
- stacked on the surface of the display panel is accommodated in the said window part by a part in thickness direction, and the remaining part in this thickness direction is the outer surface of the said accommodating part and a flange part. Therefore, even if the light guide member is adhered to the surface of the covering member with an adhesive, the adhesive does not sag inside the housing. Therefore, it is possible to prevent the display from causing a stain or a decrease in luminance due to the adhesive entering the inside of the housing and wrapping around the back surface of the display panel or adhering to the backlight or lens sheet. Can do.
- the covering member includes a first covering member housed in the window portion and a second covering member that covers at least a part of the outer surface of the first covering member and the flange portion. It may be configured.
- the covering member includes a first covering portion accommodated in the window portion, and a second covering portion that covers at least a part of the outer surface of the first covering portion and the flange portion. It may be formed integrally.
- the covering member may be pasted so as to cover at least the entire display area of the surface of the display panel.
- the covering member may be pasted so as to cover the peripheral edge of the surface of the display panel in a frame shape.
- the peripheral end surface of the covering member is preferably flush with at least one of the outer peripheral side surface of the light guide member and the outer surface of the housing.
- the light guide member may be flush with the outer side surface of the light guide member and the outer surface of the housing. Since the three members of the peripheral edge surface and the outer surface of the housing are flush with each other, when a plurality of display devices are combined and used as a multi-display system, a plurality of devices are provided so that no gap is generated between the light guide member and the housing. The display device can be combined. Therefore, the stress which a light guide member receives when assembling a large screen display can be reduced.
- a covering member is attached so as to cover the peripheral edge of the surface of the display panel in a frame shape, and the covering member includes a first covering member accommodated in the window portion, and outer surfaces of the first covering member and the flange portion.
- the display device of the present invention is such that the inner peripheral side end surface of the second covering member is the inner peripheral side end surface of the first covering member and the above-described first covering member. It is preferable to be flush with at least one of the inner peripheral side end faces of the light guide member.
- the covering member may be formed of an acrylic resin.
- the first covering member may be formed of a transparent elastic material.
- the display device of the present invention is such that the second covering member is formed of polyethylene terephthalate resin or triacetyl cellulose resin. Alternatively, it may be formed of a transparent elastic material or may be formed of an acrylic resin.
- the first covering member may be configured by a touch panel sheet.
- the display device of the present invention is suitable when the diagonal length of the display panel is 812 mm or more.
- the display device of the present invention is suitable when the display panel is a liquid crystal display panel in which a liquid crystal layer is provided between two substrates.
- the multi-display system of the present invention displays a large screen by combining a plurality of display devices of the present invention.
- a light guide member that guides the emitted light from the display panel to the outside of the display panel is provided at the peripheral portion of the display panel.
- the covering member in the first step, is disposed so that the remaining portion in the thickness direction of the covering member covers at least a part of the outer surface of the flange portion. Even if the adhesive is spread by disposing the light guide member via the adhesive, the adhesive does not sag inside the housing. Therefore, it is possible to prevent the adhesive from entering the inside of the housing and wrapping around the back surface of the display panel, or adhering to the backlight, the lens sheet, or the like to cause a stain or a decrease in luminance on the display. .
- FIG. 1 is a cross-sectional view of a display device according to a first embodiment.
- 1 is a schematic plan view of a display device according to Embodiment 1.
- FIG. It is sectional drawing of a display panel.
- 6 is an explanatory diagram of a first step in the method for manufacturing the display device of Embodiment 1.
- FIG. It is explanatory drawing of the 2nd process in the manufacturing method of the display apparatus of Embodiment 1.
- FIG. 11 is a schematic cross-sectional view of a display device according to Modification 1.
- FIG. 10 is a schematic plan view of a display device according to Modification 1.
- FIG. 11 is a schematic cross-sectional view of a display device according to Modification 2.
- FIG. 12 is a schematic plan view of a display device according to Modification 2.
- FIG. 11 is a schematic cross-sectional view of a display device according to Modification 3.
- FIG. 10 is a schematic cross-sectional view of a display device according to Modification Example 5.
- FIG. It is sectional drawing of the display apparatus concerning Embodiment 2.
- FIG. It is a flowchart which shows the sticking process of the display apparatus of Embodiment 2. It is explanatory drawing of the sticking process of the light guide member concerning Embodiment 2.
- FIG. It is sectional drawing of the display apparatus concerning Embodiment 3.
- FIG. It is a top view of the display apparatus of the modification 6. It is sectional drawing of the display apparatus of the two modifications 6 arrange
- FIG. 1 is a schematic image diagram of a multi-display system 10.
- the multi-display system 10 is used, for example, for digital signage applications that display a large screen.
- the multi-display system 10 includes a plurality of display devices 100 (nine in FIG. 1) and a management unit 200.
- the management unit 200 communicates with each of the display devices 100 via the network 201.
- the management unit 200 has a function of transmitting content to be displayed on each display device 100 and switching display modes in the display device 100.
- Each display device 100 may be connected in parallel as shown in FIG. 1, or may be connected in series by a GPIB interface board (GeneralurPurpose Interface Bus interface board) or the like.
- GPIB interface board GeneralurPurpose Interface Bus interface board
- FIG. 2 shows a state where a plurality of display devices 100 are assembled together.
- a plurality of display devices 100 constitute a large screen display 300 as a whole.
- Each display device 100 may display an enlarged part of the image based on an instruction from the management unit 200 so that one image is formed on the large screen display 300. Further, the same image may be displayed without being enlarged on each display device 100 (that is, nine images are displayed in a tile shape). Alternatively, different images may be displayed on each display device 100.
- the display device 100 includes a display panel 110 that performs image display, a backlight unit 120 that causes light to enter the display panel 110, a display panel 110, a housing 130 that includes the backlight unit 120, and a display viewing-side surface 110B of the display panel 110.
- the first sheet (first covering member) 140A and the second sheet (second covering member) 140B (hereinafter sometimes collectively referred to as the covering member 140) that cover and protect the display panel 110, and the peripheral portion of the display panel 110
- the light guide member 150 provided correspondingly is provided.
- the display panel 110 includes two substrates 111 ⁇ / b> A and 111 ⁇ / b> B arranged opposite to each other, a sealing material 112 provided in a frame shape at a peripheral portion between them, and a sealing material 112.
- a liquid crystal layer 113 provided in the enclosed region and polarizing plates 114A and 114B provided on the surfaces of the substrates 111A and 111B opposite to the liquid crystal layer 113 are provided.
- the substrate 111A and the polarizing plate 114A are disposed on the backlight unit side 110A of the display panel 110, and the substrate 111B and the polarizing plate 114B are disposed on the display viewing side 110B of the display panel 110, respectively.
- the display panel 110 preferably has a diagonal length of 812 mm (32 inch size) or more.
- the display panel 110 preferably has a size of about 60 inches with a vertical length of 747 mm and a horizontal length of 1328 mm.
- the backlight unit 120 is disposed so as to face the surface of the display panel 110 on the polarizing plate 114A side.
- the backlight unit 120 includes a light source such as a cold cathode tube or an LED (Light Emitting Diode), and a light guide plate and a diffusion plate that guide light from the light source to the display panel 110.
- a light source such as a cold cathode tube or an LED (Light Emitting Diode)
- a light guide plate and a diffusion plate that guide light from the light source to the display panel 110.
- the housing 130 includes, for example, a front housing part 131 that encloses the display panel 110 and a rear housing part 132 that supports the backlight unit 120.
- the front housing part 131 has a window part 131W on the bottom surface, and is provided so that a flange part 130F constituting the window frame part of the window part 131W extends inward.
- a part of the display panel 110 and the first sheet 140 ⁇ / b> A in the thickness direction is disposed inside the front casing 131.
- the display panel 110 is positioned in the front casing 131 so that the display image can be visually recognized from the outside through the window 131W.
- a spacer 133 is formed in a frame shape along the peripheral edge.
- the front casing 131 is fixed to the first sheet 140A with the surface 131A constituting the window 131W abutting against the side surface of the first sheet 140A. Further, the display panel 110 and the front casing 131 are fixed to each other by the inner surface 131B of the flange portion 130F coming into contact with the tip of the spacer 133.
- the back housing part 132 is a rectangular bottomed box type, and the backlight unit 120 is disposed therein.
- the bottom surface of the backlight unit 120 is fixed to the bottom surface of the rear housing part 132, and thereby the backlight unit 120 is supported by the rear housing part 132.
- the inside of the side wall surface of the front housing part 131 is in contact with the outside of the side wall surface of the back housing part 132, thereby supporting both of them.
- the spacer 133 is provided between the inner surface 131B of the flange portion 130F and the peripheral portion of the display panel 110 so as to be fixed in a frame shape.
- the spacer 133 is formed of silicone rubber (for example, a commercially available silicone rubber adhesive tape manufactured by Teraoka Seisakusho Co., Ltd.).
- the spacer 133 has a height of 0.1 to 0.2 mm, for example.
- the covering member 140 includes a first sheet 140A and a second sheet 140B.
- the first sheet 140A is bonded to the display panel 110 with a double-sided tape 141A
- the second sheet 140B is bonded to the first sheet 140A with a double-sided tape 141B.
- the first sheet 140A is attached to the display visual recognition side surface 110B so as to cover the entire display area of the display panel 110.
- 140 A of 1st sheets are formed in the magnitude
- the first sheet 140A has a thickness of 0.1 to 1 mm, for example.
- the second sheet 140B is provided so as to cover the entire surface of the first sheet 140A opposite to the display panel 110.
- the second sheet 140B is formed to be slightly larger than the first sheet 140A, and the outer peripheral edge portion of the second sheet 140B covers the outer surface of the flange portion 130F.
- the second sheet 140B has a thickness of 0.01 to 0.5 mm, for example.
- the first and second sheets 140A and 140B and the double-sided tapes 141A and 141B preferably have a refractive index of 1.3 to 1.7, and more preferably close to 1.5.
- the refractive index of the glass or polarizing plate 114B constituting the display panel 110 is about 1.5, and the first and second sheets 140A and 140B and the double-sided tapes 141A and 141B are made of a material having a refractive index close to these.
- the material of the first and second sheets 140A and 140B include an acrylic resin (refractive index 1.5).
- the acrylic resin is suitable as a material for the first and second sheets 140A and 140B from the viewpoint of chemical resistance and wear resistance.
- the tape (refractive index of about 1.5) etc. which were comprised with the acrylic resin material, etc.
- the double-sided tape 141A, 141B for example, an optical transparent double-sided tape (OCA tape (Optical Clear Adhesive Tape)) or an acrylic gel sheet can be used.
- OCA tape Optical Clear Adhesive Tape
- acrylic gel sheet a commercially available product such as a highly transparent adhesive transfer tape manufactured by Sumitomo 3M Limited can be used.
- acrylic gel sheet a molecular gradient film double-sided tape (registered trademark of Kyodo Giken Chemical Co., Ltd.) or the like can be used, and examples of commercially available products include “300Z” series manufactured by Kyodo Giken Chemical Co., Ltd. .
- the light guide member 150 is provided on the surface of the second sheet 140B opposite to the first sheet 140A on the peripheral edge in a frame shape.
- the light guide member 150 includes a straight line that forms a plane facing the second sheet 140 ⁇ / b> B, a straight line that forms the peripheral end surface 150 ⁇ / b> S (see FIG. 10) of the light guide member 150, It has a shape constituted by a curve that forms a curved surface that connects two straight lines and bulges toward the display viewing side.
- the light guide member 150 is formed of, for example, a transparent insulating material such as acrylic resin.
- the light guide member 150 has a width of 10 to 100 mm and a thickness of 10 to 30 mm.
- the emitted light from the display panel 110 for displaying an image is averaged with respect to the display panel 110 as indicated by an arrow A in FIG. 3 in an area where the light guide member 150 is not provided. Is emitted vertically.
- the light guide member 150 by providing the light guide member 150 at the peripheral portion on the display viewing side of the display panel 110, the light at the peripheral portion of the display panel 110 is transmitted through the light guide member 150, as indicated by an arrow B in FIG. Sometimes it is refracted by the curved surface of the light guide member 150 and travels outward of the display panel 110.
- the multi-display system 10 having the large screen display 300 is configured using a plurality of display devices 100 to display an enlarged image
- the light emitted from the display panel 110 has a peripheral portion outside the display panel 110.
- the display at the joint of each display device 100 is easily visible, and the joint becomes inconspicuous.
- the light guide member 150 is bonded to the surface of the second sheet 140B with an adhesive 151.
- the adhesive 151 include an ultraviolet curable resin and a thermosetting resin.
- the outer side surface 130S of the front housing part 131, the peripheral edge surface 140S of the second sheet 140B, and the outer peripheral side surface 150S of the light guide member 150 are positioned so as to be flush with each other.
- the display panel 110 the backlight unit 120, the front housing part 131, the rear housing part 132, the first sheet 140A, the second sheet 142 with the extension part, and the light guide member 150 are prepared.
- the display panel 110 is manufactured by a conventionally known method.
- the second sheet 142 with the extending portion is formed of a material such as an acrylic resin sheet having an area that is slightly larger than that of the sheet material to be the second sheet 140B.
- the second sheet 142 with the extension portion is formed so that the extension length from the portion that becomes the second sheet 140B is, for example, 100 ⁇ m to 1 mm.
- the cover film 152 is affixed on the surface which becomes the 2nd sheet
- the cover film 152 is positioned in a region surrounded by a region where the light guide member 150 is disposed.
- a film such as polyethylene terephthalate (PET) or triacetyl cellulose (TAC) can be used.
- the backlight unit 120 is fixed to the rear housing part 132. Then, as shown in FIG. 7, a spacer 133 is arranged in a frame shape on the periphery of the display viewing side surface 110 ⁇ / b> B of the display panel 110 or the inner surface of the flange portion 130 ⁇ / b> F of the front housing portion 131, and the front housing portion 131.
- the inner surface of the flange portion 130F and the peripheral portion of the display viewing side surface 110B of the display panel 110 are fixed.
- the front housing part 131 and the rear housing part 132 are screwed or the like so that the inside of the side wall surface of the front housing part 131 and the outside of the side wall surface of the back housing part 132 are in contact with each other and are supported with each other. assemble. As a result, the display panel 110 and the backlight unit 120 are enclosed in the housing 130.
- step S111 a double-sided tape 141A is attached to the surface of the first sheet 140A on the display panel 110 side.
- step S112 the first sheet 140A is attached via the double-sided tape 141A so as to cover the display area of the display panel 110. At this time, the first sheet 140A is positioned so as to be accommodated in the window portion 131W of the front housing portion 131.
- step S113 the double-sided tape 141B is affixed to the surface of the second sheet 142 with the extension portion on the first sheet 140A side.
- step S114 the 2nd sheet
- the second sheet 142 with the extension part covers the first sheet 140A and the flange part 130F, and the extension part 142a of the peripheral part of the second sheet 142 with the extension part is more than the outer side surface 130S of the housing 130. Positioned to extend outward.
- the preparation step and the first step may be performed by appropriately changing the order of the steps. For example, after polarizing plates 114A and 114B are attached to the surfaces of the substrates 111A and 111B constituting the display panel 110 and the first sheet 140A is attached to the surface of the polarizing plate 114B, a high-density multichip SOF (System On Film) is attached. ) And a printed wiring board (Printed Writing Board; hereinafter also referred to as “PWB”) are mounted on the display panel 110, and the display panel 110 and the backlight unit 120 are assembled in a housing 130. May be performed.
- PWB printed wiring board
- the first sheet 140A and the second sheet 140B are attached, and then the display panel 110 and the backlight unit 120 are assembled in the housing 130. May be performed.
- the double-sided tape 141A is attached to the surface of the polarizing plate 114B of the display panel 110
- the first sheet 140A is attached
- the double-sided tape 141B is attached to the surface of the first sheet 140A. Assembling may be performed so that 120 is enclosed in the housing 130.
- the hook-shaped adhesive receiving part 170 is installed so as to surround the outer periphery of the second sheet 142 with the extension part at a position depending from the peripheral edge of the extension part 142 a.
- the adhesive receiving part 170 is formed by processing a stainless material, for example.
- step S121 the adhesive 151 is applied to the surface of the light guide member 150 on the side to be bonded to the second sheet 142 with the extending portion.
- step S122 the light guide member 150 which apply
- the light guide member 150 is arranged so that the outer peripheral side surface 150S of the light guide member 150 and the outer surface 130S of the front housing part 131 are flush with each other.
- the position where the light guide member 150 is disposed should not overlap the cover film 152.
- the adhesive 151 is spread and protrudes from the region where the light guide member 150 is bonded.
- the adhesive 151A that protrudes toward the extending portion 142a spreads along the extending portion 142a, and a part thereof flows down from the peripheral edge of the extending portion 142a.
- the adhesive 151A that has flowed down from the peripheral edge of the extending part 142a is received by the adhesive receiving part 170 installed at a position depending on the peripheral edge of the extending part 142a.
- the adhesive 151 ⁇ / b> B that is pushed out toward the display area among the protruding adhesive 151 is restricted from spreading on the second sheet 142 with the extension by the cover film 152, and a part of the adhesive 151 ⁇ / b> B is on the cover film 152. Get on.
- the mounted adhesive 151B is wiped off and removed.
- step S131 the adhesive 151 interposed between the light guide member 150 and the second sheet 142 with the extending portion is cured by ultraviolet irradiation and / or heating.
- the ultraviolet irradiation may be performed in a state where a region other than the light guide member 150 is masked. Thereby, the light guide member 150 is bonded to the second sheet 142 with the extending portion.
- step S141 the extension part 142a is cut out from the 2nd sheet
- the extended portion 142a is cut out from the second sheet 142 with the extended portion so as to be flush with the outer side surface 130S of the front housing portion 131 and the outer peripheral side surface 150S of the light guide member 150.
- screws are tightened from the side of the front casing 131 so that the surface 131A constituting the window 131W abuts on the side of the first sheet 140A and is fixed to the first sheet 140A.
- the gap between the flange portion 130F and the first sheet 140A is adjusted.
- the cover film 152 is peeled off from the surface of the second sheet 140B. Thereby, the display device 100 is manufactured.
- the cover film 152 has been described in advance as being attached to the second sheet 142 with the extension portion.
- the present invention is not limited to this.
- the first sheet The cover film 152 may be pasted on the second sheet 142 with the extension part after the second sheet 142 with the extension part is pasted on the 140A.
- the second sheet 142 with the extension portion has been described as the light guide member 150 is disposed via the adhesive 151 in a state where the cover film 152 is attached to the surface opposite to the first sheet 140A. Affixing the cover film 152 is not an essential process. When the cover film 152 is not attached, the adhesive 151 is spread when the light guide member 150 is pressed, and the surface of the second sheet 142 with the extension portion is contaminated. Is used to wipe away the adhesive 151 spread on the surface of the second sheet 142 with the extension portion.
- the second sheet 142 with the extension portion is disposed so as to cover the outer surface of the flange portion 130F of the housing 130. Therefore, in the second step, the second sheet with the extension portion is provided. Even if the adhesive 151 is pushed and spread by disposing the light guide member 150 in a predetermined portion on the 142, the adhesive 151 does not sag inside the housing 130.
- the second sheet 142 with the extending portion provided with the extending portion 142a extending outward is laminated on the surface of the display panel 110. Therefore, in the second step, Even if the adhesive 151 is pushed and spread by disposing the light guide member 150 on a predetermined portion on the second sheet 142 with the extension part, the adhesive 151A that has flowed down from the extension part 142a to the outside of the housing 130 remains. The scattering of the outside of the housing 130 and the contamination of the peripheral portion are suppressed.
- the adhesive receiving part 170 since the adhesive receiving part 170 is installed at a position depending from the peripheral edge of the extending part 142a, the adhesive 151A that has flowed down from the extending part 142a is not removed from the extending part 142a. It is more efficiently suppressed that the adhesive 151A that is received by the adhesive receiving part 170 installed at the position that hangs down from the peripheral edge and the flowed-off adhesive 151A is scattered and the outside of the housing 130 is soiled or the peripheral part is soiled. Is done. The adhesive 151A accumulated in the adhesive receiving part 170 can be recovered and reused, and the adhesive 151 can be used efficiently.
- the first sheet 140A is provided so as to cover at least the entire display area of the display panel 110, and the second sheet 140B covers the entire surface of the first sheet 140A opposite to the display panel 110.
- the second sheet 140B may be pasted so as to cover the periphery of the first sheet 140A in a frame shape.
- the first sheet 140A is provided in a frame shape so as not to cover the central portion of the display area of the display panel 110, and the second sheet 140B is the first sheet. It may be provided so as to cover the periphery of 140A in a frame shape.
- the adhesive 151 that adheres the light guide member 150 is prevented from dripping into the housing 130, or the adhesive that has flowed out of the housing 130. It is possible to obtain an effect of preventing the outside of the housing 130 from being contaminated and the peripheral portion from being contaminated by the scattering of 151A.
- Modification 3 In the first embodiment, an acrylic sheet made of an acrylic resin is used as the first sheet 140A. However, a touch panel sheet 160 may be attached instead of the first sheet 140A.
- the touch panel sheet 160 may be a resistive film type, a capacitive type (analog capacitive coupling type), an ultrasonic type, or any other type.
- the touch panel sheet 160 includes a first base material in which a transparent conductive film 162A such as an ITO film is provided on the surface of the transparent film 161A, and a second base in which a transparent conductive film 162B such as an ITO film is provided on the surface of the transparent film 161B.
- the materials are arranged to face each other so that the transparent conductive films 162A and 162B face each other.
- the 1st base material and the 2nd base material are mutually adhere
- dot spacers 164 made of, for example, epoxy resin are provided at a predetermined pitch.
- a hard coat film 165 obtained by applying a hard resin such as an acrylic urethane resin or a siloxane resin to the surface of the transparent film 161B of the second base material is provided.
- the transparent films 161A and 161B as the base material of the touch panel sheet 160, a material having a refractive index of 1.3 to 1.7 is suitable.
- the display panel 110 and the transparent film 161A of the touch panel sheet 160 Light refraction at the interface can be reduced.
- transparent films 161A and 161B include PET (polyethylene terephthalate) film (refractive index 1.58), PEN (polyethylene naphthalate) film (refractive index 1.64), and PC (polycarbonate) film. (Refractive index 1.58), glass film (refractive index 1.5), etc. can be used.
- the configuration is the same as that of the first embodiment except that the touch panel sheet 160 is used instead of the first sheet 140A.
- the adhesive 151 that adheres the light guide member 150 is prevented from dripping into the housing 130, or the adhesive 151 ⁇ / b> A that has flowed out of the housing 130 is removed. It is possible to obtain an effect of suppressing the scattering of the outside of the housing 130 and the surrounding area from being scattered.
- the second sheet 142 with the extension portion is stacked in the first step.
- the second sheet 142 does not include the extension portion. May be. Even in this case, since the second sheet 142 is disposed so as to cover the flange portion 130F of the housing 130, the adhesive 151 does not drip into the housing 130. In this case, the fourth step is not necessary in the manufacturing method.
- the first sheet 140A is described as being formed of an acrylic resin, but may be formed of a transparent elastic material such as an acrylic gel sheet or a silicone rubber sheet.
- a transparent elastic material such as an acrylic gel sheet or a silicone rubber sheet.
- the acrylic gel sheet itself has viscosity, so that the double-sided tape 141A for bonding the display panel 110 and the first sheet 140A as shown in FIG.
- the double-sided tape 141B for bonding the first sheet 140A and the second sheet 140B can be omitted as appropriate.
- the second sheet 140B is described as being formed of an acrylic resin, but may be formed of an acrylic gel sheet, a PET film, a TAC film, or the like.
- the extended portion 142a is also formed of an acrylic gel sheet. Therefore, the adhesive is difficult to flow down due to the tackiness of the acrylic gel sheet, and the extended portion 142a is easily formed. Can be cut off.
- the second sheet 140B is formed of a PET film or a TAC film, in addition to being excellent in chemical resistance, the extending portion 142a is also formed of a PET film or a TAC film, so that it can be easily extended. The protruding portion 142a can be cut.
- the surface 131A constituting the window portion 131W is in contact with the side surface of the first sheet 140A.
- the surface 131A constituting the window portion 131W and the side surface of the first sheet 140A are separated from each other. It doesn't matter.
- the light guide member 150 is described as being provided with a frame shape covering the outer peripheral edge of the display panel surface.
- the light guide member 150 is the display device 100 of the outer peripheral edge of the display panel 110. May be provided in a region adjacent to the other display device 100 when a plurality of are combined to form the large screen display 300.
- Embodiment 2 (Display device) Next, the display device 100 according to the second embodiment of the present invention will be described. As in the first embodiment, the display device 100 forms a multi-display system 10 by combining a plurality of display devices.
- FIG. 18 is a cross-sectional view of the display device 100 according to the second embodiment.
- the display device 100 includes a display panel 110 that performs image display, a backlight unit 120 that causes light to enter the display panel 110, a display panel 110, a housing 130 that includes the backlight unit 120, and a display viewing-side surface 110B of the display panel 110. And a light guide member 150 provided corresponding to the peripheral portion of the display panel 110.
- the covering member 140 is attached to the display visual recognition side surface 110 ⁇ / b> B with a double-sided tape 141 so as to cover the entire display area of the display panel 110.
- the covering member 140 is formed of a first covering portion 140C constituting a part in the thickness direction on the display panel 110 side and a second covering portion 140D serving as the remaining portion in the thickness direction.
- coated parts are formed in the magnitude
- the second covering portion 140D has an outer peripheral edge that extends outward from the first covering portion 140C and is slightly larger than the first covering portion 140C.
- the outer peripheral edge portion of the second covering portion 140D covers the outer surface of the flange portion 130F.
- the first covering portion 140C has a thickness of 0.1 to 1 mm, for example.
- the second covering portion 140D has a thickness of 0.01 to 0.5 mm, for example.
- the covering member 140 and the double-sided tape 141 preferably have a refractive index of 1.3 to 1.7, and more preferably close to 1.5.
- the refractive index of the glass or polarizing plate 114B constituting the display panel 110 is about 1.5, and the covering member 140 and the double-sided tape 141 are made of a material having a refractive index close to that of the display panel 110.
- Light refraction can be kept small at the interface of the tape 141, the interface of the double-sided tape 141 and the covering member 140, and the like.
- Examples of the material of the covering member 140 include acrylic resin (refractive index 1.49).
- the acrylic resin is suitable as a material for the covering member 140 from the viewpoints of chemical resistance and wear resistance.
- the tape (refractive index of about 1.5) etc. which were comprised with the acrylic resin material, etc. are mentioned, for example.
- the double-sided tape 141 for example, an optical transparent double-sided tape (OCA tape (Optical Clear Adhesive Tape)), an acrylic gel sheet, or the like can be used.
- OCA tape Optical Clear Adhesive Tape
- acrylic gel sheet or the like can be used.
- the optical transparent double-sided tape for example, a commercially available product such as a highly transparent adhesive transfer tape manufactured by Sumitomo 3M Limited can be used.
- an acrylic gel sheet a molecular gradient film double-sided tape (registered trademark of Kyodo Giken Chemical Co., Ltd.) or the like can be used, and examples of commercially available products include “300Z” series manufactured by Kyodo Giken Chemical Co., Ltd. .
- the components other than the covering member 140 have the same configuration as that of the first embodiment.
- the display panel 110 the backlight unit 120, the front housing part 131, the back housing part 132, the covering member 143 with the extension part, and the light guide member 150 are prepared.
- the display panel 110 is manufactured by a conventionally known method.
- the covering member 143 with the extending portion is a part in the thickness direction, and is continuous with the first covering portion 140C that can be accommodated in the window portion 131W of the front housing portion 131, and the first covering portion 140C in the thickness direction.
- the second covering portion 140D having an area slightly larger than the first covering portion 140C and the extending portion 143a extending further outward from the housing 130 from the second covering portion 140D are integrally formed.
- the first covering portion 140 ⁇ / b> C and the second covering portion 140 ⁇ / b> D of the covering member 143 with the extension portion correspond to portions that become the covering member 140.
- the covering member 143 with the extending portion is formed so that the extending length from the second covering portion 140D is, for example, 100 ⁇ m to 1 mm.
- a cover film 152 is attached in advance to the surface of the covering member 143 with the extension portion on the side opposite to the display panel 110.
- the cover film 152 is positioned in a region surrounded by a region where the light guide member 150 is disposed.
- a film such as polyethylene terephthalate (PET) or triacetyl cellulose (TAC) can be used.
- the display panel 110, the backlight unit 120, the front casing 131, and the rear casing 132 are arranged so that the display panel 110 and the backlight unit 120 are included in the casing 130. assemble.
- step S211 a double-sided tape 141 is affixed to the surface on the display panel 110 side of the covering member 143 with the extension portion.
- step S212 the covering member 143 with an extension part is stuck through the double-sided tape 141 so as to cover the display area of the display viewing side surface 110B of the display panel 110.
- the first covering portion 140C of the covering member 143 with the extending portion is accommodated in the window portion 131W of the front housing portion 131, while the outer peripheral edge portion of the second covering portion 140D covers the outer surface of the flange portion 130F.
- the extension part 143a is positioned so as to extend outward from the outer side surface 130S of the housing 130.
- a hook-shaped adhesive receiving part 170 is installed so as to surround the outer periphery of the sheet with the extension part at a position depending from the peripheral edge of the extension part 143a.
- step S221 the adhesive 151 is applied to the surface of the light guide member 150 on the side to be bonded to the covering member 143 with the extending portion.
- step S222 the light guide member 150 which apply
- the light guide member 150 is arranged so that the outer peripheral side surface 150S of the light guide member 150 and the outer surface 130S of the front housing part 131 are flush with each other.
- the position where the light guide member 150 is disposed should not overlap the cover film 152.
- the adhesive 151 is spread and protrudes from the region where the light guide member 150 is bonded.
- the adhesive 151A that protrudes toward the extending part 143a spreads along the extending part 143a, and a part thereof flows down from the peripheral edge of the extending part 143a.
- the adhesive 151A that has flowed down from the peripheral edge of the extending portion 143a is received by the adhesive receiving portion 170 installed at a position depending from the peripheral edge of the extending portion 143a.
- the adhesive 151 ⁇ / b> B that is pushed and spread toward the display area among the protruding adhesive 151 is restricted from spreading on the covering member 143 with the extension by the cover film 152, and a part of the adhesive 151 ⁇ / b> B is placed on the cover film 152. Get on. It should be noted that the adhesive 151B that has ridden is wiped off and removed.
- step S231 the adhesive 151 interposed between the light guide member 150 and the covering member with extension portion 143 is cured by ultraviolet irradiation and / or heating.
- the extending portion 143a is cut out from the covering member 143 with the extending portion in step S241.
- the extending portion 143a is cut out from the covering member 143 with the extending portion so that the outer side surface 130S of the front housing portion 131 and the outer peripheral side surface 150S of the light guide member 150 are flush with each other.
- the cover film 152 is peeled off from the surface of the covering member 140. Thereby, the display device 100 is manufactured.
- the sheet with the extension portion in the first step, is arranged so that the peripheral edge portion of the second covering portion 140D of the covering member 143 with the extension portion covers the outer surface of the flange portion 130F of the housing 130. Therefore, in the second step, even if the adhesive 151 is spread by placing the light guide member 150 on a predetermined portion of the surface of the covering member 143 with the extension portion, the adhesive 151 is placed inside the housing 130. It will not sag.
- the covering member 143 with the extending portion including the extending portion 143a extending outward from the second covering portion 140D is laminated on the surface of the display panel 110.
- the second step even if the adhesive 151 is pushed and spread by disposing the light guide member 150 on a predetermined portion of the surface of the covering member 143 with the extending portion, the end portion of the sheet with the extending portion can be used. It is possible to prevent the adhesive 151 ⁇ / b> A that has flowed down to the outside from being scattered and the exterior of the housing 130 from being stained or the peripheral portion from being stained.
- the adhesive receiving part 170 since the adhesive receiving part 170 is installed at a position depending from the peripheral edge of the extending part 143a, the adhesive 151A that has flowed down from the peripheral edge of the extending part 143a is It is more likely that the adhesive 151A, which is received by the adhesive receiving portion 170 installed at a position depending from the peripheral edge of the portion 143a, scatters and the outside of the housing 130 becomes dirty or the peripheral portion becomes dirty. It is suppressed efficiently.
- Embodiment 3 (Display device) Next, the display device 100 according to the third embodiment of the present invention will be described. As in the first embodiment, the display device 100 forms a multi-display system 10 by combining a plurality of display devices.
- FIG. 21 is a cross-sectional view of the display device 100 according to the third embodiment.
- the display device 100 includes a display panel 110 that performs image display, a backlight unit 120 that causes light to enter the display panel 110, a display panel 110, a housing 130 that includes the backlight unit 120, and a display viewing-side surface 110B of the display panel 110. And a light guide member 150 provided corresponding to the peripheral portion of the display panel 110.
- the display panel 110 is provided in a region surrounded by two substrates 111A and 111B arranged opposite to each other, a sealing material 112 provided in a frame shape at a peripheral portion between them, and a sealant 112 bonding them together.
- Liquid crystal layer 113 and polarizing plates 114A and 114B provided on the surfaces of the substrates 111A and 111B opposite to the liquid crystal layer 113 (see FIG. 5).
- the substrate 111A and the polarizing plate 114A are disposed on the backlight unit side 110A of the display panel 110, and the substrate 111B and the polarizing plate 114B are disposed on the display viewing side 110B of the display panel 110, respectively.
- the display panel 110 preferably has a diagonal length of 812 mm (32 inch size) or more.
- the display panel 110 preferably has a size of about 60 inches with a vertical length of 747 mm and a horizontal length of 1328 mm.
- the backlight unit 120 is disposed so as to face the surface of the display panel 110 on the polarizing plate 114A side.
- the backlight unit 120 includes a light source such as a cold cathode tube or an LED (Light Emitting Diode), and a light guide plate and a diffusion plate that guide light from the light source to the display panel 110.
- a light source such as a cold cathode tube or an LED (Light Emitting Diode)
- a light guide plate and a diffusion plate that guide light from the light source to the display panel 110.
- the housing 130 includes, for example, a front housing part 131 that encloses the display panel 110 and a rear housing part 132 that supports the backlight unit 120.
- the front housing part 131 has a window part 131W on the bottom surface, and is provided so that a flange part 130F constituting the window frame part of the window part 131W extends inward.
- a part of the display panel 110 and the first covering member 140 ⁇ / b> E in the thickness direction are arranged inside the front casing 131.
- the display panel 110 is positioned in the front casing 131 so that the display image can be visually recognized from the outside through the window 131W.
- a spacer 133 is formed in a frame shape on the display viewing side surface 110B of the display panel 110 along the peripheral edge.
- the front casing 131 is fixed to the first covering member 140E with the surface 131A constituting the window portion 131W being in contact with the side surface of the first covering member 140E. Further, the display panel 110 and the front casing 131 are fixed to each other by the inner surface 131B of the flange portion 130F coming into contact with the tip of the spacer 133.
- the back housing part 132 is a rectangular bottomed box type, and the backlight unit 120 is disposed therein.
- the bottom surface of the backlight unit 120 is fixed to the bottom surface of the rear housing part 132, and thereby the backlight unit 120 is supported by the rear housing part 132.
- the inside of the side wall surface of the front housing part 131 is in contact with the outside of the side wall surface of the back housing part 132, thereby supporting both of them.
- the spacer 133 is provided between the inner surface 131B of the flange portion 130F and the peripheral portion of the display viewing side surface 110B of the display panel 110 so as to be fixed in a frame shape.
- the spacer 133 is formed of silicone rubber (for example, a commercially available silicone rubber adhesive tape manufactured by Teraoka Seisakusho Co., Ltd.).
- the spacer 133 has a height of 0.1 to 0.2 mm, for example.
- the covering member 140 includes a first covering member 140E and a second covering member 140F.
- the first covering member 140E and the second covering member 140F are provided so as to cover the periphery of the display viewing side surface 110B of the display panel 110 in a frame shape.
- the first covering member 140E is attached to the display visual recognition side surface 110B so as to cover the periphery of the display panel 110 in a frame shape.
- the first covering member 140E is formed in a size that fits into the window portion 131W provided in the front housing portion 131, and is accommodated in the window portion 131W.
- the first covering member 140E has a thickness larger than the thickness of the flange portion 130F of the front housing portion 131, for example, 0.1 to 1 mm.
- the first covering member 140E is made of a transparent elastic material.
- the transparent elastic material include an acrylic gel sheet, a silicone rubber sheet, and a polyurethane gel sheet. Since the first covering member 140E is formed of a transparent elastic material, the first covering member 140E itself has properties such as adhesiveness, flexibility, and elasticity. Due to the adhesiveness of the first covering member 140E, the first covering member 140E can be laminated on the surface of the display panel 110 without using an adhesive such as a double-sided tape, and on the first covering member 140E without using an adhesive. The second covering member 140F can be laminated. In addition, due to the adhesiveness of the first covering member 140E, it is also easy to peel off the first covering member 140E once pasted on the display panel 110.
- the first covering member 140E can be attached while suppressing bubbles and the like from entering between the display panel 110 and the first covering member 140E. Furthermore, due to the elasticity of the first covering member 140E, the stress applied between the display panel 110 and the light guide lens 150 is absorbed, and the strength of the panel can be increased.
- the second covering member 140F is provided in a frame shape so as to cover the surface of the first covering member 140E opposite to the display panel 110 and the surface of the flange portion 130F.
- the second covering member 140F has a thickness of 0.01 to 0.5 mm, for example.
- the second covering member 140F is formed of a polyethylene terephthalate (PET) resin sheet. Since the second covering member 140F is formed of a PET resin sheet, the second covering member 140F has flexibility and can be easily attached onto the first covering member 140E. And bubbles are suppressed from entering between the first covering member 140F and the second covering member 140F. In addition, the second covering member 140F formed of PET resin has advantages such as high chemical resistance and low material cost.
- PET polyethylene terephthalate
- the light guide member 150 is provided on the surface of the second covering member 140F opposite to the first covering member 140E on the peripheral edge in a frame shape.
- the light guide member 150 includes a straight line that forms a plane facing the second covering member 140 ⁇ / b> F, a straight line that forms the peripheral end surface 150 ⁇ / b> S of the light guide member 150, and these two straight lines And a curve that forms a curved surface that bulges to the display viewing side.
- the light guide member 150 is formed of, for example, a transparent insulating material such as acrylic resin.
- the light guide member 150 has a width of 10 to 100 mm and a thickness of 10 to 30 mm.
- Light emitted from the display panel 110 for displaying an image on the display panel 110 is averaged with respect to the display panel 110 as shown by an arrow A in FIG. 21 in an area where the light guide member 150 is not provided. It is emitted vertically.
- the light guide member 150 by providing the light guide member 150 at the peripheral portion on the display viewing side of the display panel 110, the light at the peripheral portion of the display panel 110 is transmitted through the light guide member 150 as shown by an arrow B in FIG. Sometimes it is refracted by the curved surface of the light guide member 150 and travels outward of the display panel 110.
- the multi-display system 10 having the large screen display 300 is configured using a plurality of display devices 100 to display an enlarged image
- the light emitted from the display panel 110 has a peripheral portion outside the display panel 110.
- the display at the joint of each display device 100 is easily visible, and the joint becomes inconspicuous.
- the light guide member 150 is bonded to the surface of the second covering member 140F with an adhesive 151.
- the adhesive 151 include an ultraviolet curable resin and a thermosetting resin.
- the outer peripheral side surface of the light guide member 150 is positioned closer to the outer peripheral side than the outer surface of the housing 130 in FIG.
- the outer peripheral side surface of the light guide member 150 is positioned closer to the inner peripheral side than the outer surface of the housing 130, while the outer peripheral side surface of the light guide member 150 is a portion with a small frame region width (F2 on the right side in FIG. Can be positioned on the outer peripheral side of the outer surface of the housing 130.
- the shaded area is an area where the light guide member 150 exists.
- the display panel 110 the backlight unit 120, the front housing part 131, the rear housing part 132, the covering member 142 with the extension part, and the light guide member 150 are prepared.
- the display panel 110 is manufactured by a conventionally known method.
- the extended covering member 142 is formed of four long PET resin sheets having a width larger than the width of the light guide member 150. Each PET resin sheet is arranged so as to correspond to each side of the display panel 110 and forms a rectangle as a whole. A region along one side extending in the length direction of each PET resin sheet constitutes an outer extending portion 142a extending outward from the panel, and a region along the other side extending in the length direction extends inward of the panel. An inner extending portion 142b is formed. In the covering member 142 with the extending portion, the extending length of the outer extending portion 142a extending to the outside of the panel is 1 to 10 cm. The extension length of the inner extension 142b extending to the inside of the panel is 1 to 10 cm.
- the backlight unit 120 is fixed to the rear housing part 132. Then, as shown in FIG. 7, a spacer 133 is arranged in a frame shape on the periphery of the display viewing side surface 110 ⁇ / b> B of the display panel 110 or the inner surface of the flange portion 130 ⁇ / b> F of the front housing portion 131, and the front housing portion 131.
- the inner surface of the flange portion 130F and the peripheral portion of the display viewing side surface 110B of the display panel 110 are fixed.
- the front housing part 131 and the rear housing part 132 are screwed or the like so that the inside of the side wall surface of the front housing part 131 and the outside of the side wall surface of the back housing part 132 are in contact with each other and are supported with each other. assemble. As a result, the display panel 110 and the backlight unit 120 are enclosed in the housing 130.
- step S311 the first covering member 140E is attached to the surface of the covering member 142 with the extension portion on the display panel 110 side using a roller.
- the first covering member 140E is a transparent elastic material
- the first covering member 140E can be bent and pasted so that air bubbles or the like do not enter between the first covering member 140E and the display panel 110.
- coated member 140E is stuck so that it may become a frame shape as a whole by making a long sheet-like transparent elastic material correspond to each of 4 sides of the display panel 110.
- step S312 the covering member 142 with the extending portion is pasted so as to cover the first covering member 140E and the flange portion 130F of the front housing portion 131.
- the covering member 142 with the extending portion is bonded to the surface of the first covering member 140E using the adhesiveness of the first covering member 140E.
- the second covering member 140F is a PET resin film, the second covering member 140F is bent and pasted so that air bubbles do not enter between the first covering member 140E and the second covering member 140F. Can do.
- step S321 the jig J1 and the spacer S1 are arranged to tilt the display device being manufactured.
- the jig J1 is a housing having a portion that is the same height as the flange portion 130F of the front housing portion 131 and a portion that is higher than the flange portion 130F when the display device is tilted. It is.
- the spacer S1 By disposing the spacer S1 below the rear housing part 132, the spacer S1 is inclined so that the entire display device leans against the jig J1 with the bottom of the housing rear part 132 as a fulcrum. Then, as shown in FIG. 27, the entire display device is tilted using the jig J1 and the spacer S1.
- the outer extending portion 142a of the covering member 142 with the extending portion is placed on the jig J1, and the extending end side of the outer extending portion 142a has a height due to a step in the jig J1. Can be placed on the raised part.
- step S322 an adhesive 151 is applied to the surface of the covering member 142 with the extending portion.
- the light guide member 150 is arrange
- the adhesive 151A does not spread outward from the middle portion of the outer extending portion 151A and hang down.
- the jigs J1 and J2 and the spacer S1 are removed so that the tilted display device becomes horizontal.
- the light guide lens 150 is aligned by the jig J2, and the light guide lens 150 is positioned so that the inner peripheral side end surface of the first covering member 140E and the inner peripheral side surface of the light guide member 150 are flush with each other. .
- step S33 the adhesive 151B protruding to the inside of the panel is simply wiped off, and thereafter, in the same manner as in the first embodiment, the adhesive 151 interposed between the light guide member 150 and the covering member 142 with the extension portion in step S331, Curing by ultraviolet irradiation and / or heating.
- step S341 the outer extending portion 142a is cut out from the covering member 142 with the extending portion, and the inner extending portion 142b is cut out from the covering member 142 with the extending portion.
- the outer peripheral side end surface 140S of the second covering member 140F and the outer peripheral side surface 150S of the light guide member 150 are flush with each other by inserting a cutter at a position indicated by C4 in FIG. Do as follows. Further, the inner extension 142b is cut by inserting a cutter at a position indicated by C5 in FIG.
- the covering member 142 with the extending portion in the first step, is disposed so as to cover the outer surface of the flange portion 130F of the housing 130. Therefore, the covering member 142 with the extending portion is disposed on the second step. Even if the adhesive 151 is pushed and spread by disposing the light guide member 150 in the predetermined portion, the adhesive 151 does not sag inside the housing 130.
- the light guide member 150 is pressed to spread the adhesive 151 in a state where the display device is tilted in the second step, and the light guide member 150 is bonded. Will not be spread. Since the inner extension 142b exists inside the panel, the adhesive 151B pushed inward in the panel can be easily removed simultaneously with the cutting of the inner extension 142b in the fifth step.
- the outer extension 142a is removed based on the outer peripheral side surface 150S of the light guide member 150.
- the outer extension 142a may be cut out with the outer surface 130S of the front casing 131 as a reference.
- the outer peripheral side surface 140S of the second covering member 140F and the outer surface 130S of the housing 130 are formed flush with each other.
- Embodiment 3 has been described on the assumption that the second covering member 140F is formed of a PET resin sheet, but may be formed of, for example, a TAC resin sheet, a transparent elastic material sheet, an acrylic resin sheet, or the like.
- the second covering member 140F When the second covering member 140F is formed of a TAC resin sheet, the second covering member 140F has flexibility similar to the PET resin sheet, and thus can be easily pasted on the first covering member 140E. In addition, bubbles and the like are suppressed from entering between the first covering member 140E and the second covering member 140F. Further, when the second covering member 140F is formed of TAC resin, since the refractive index of the TAC resin is 1.48, the optical phase difference with the light guide member (refractive index of about 1.49) is small, and good visual recognition is achieved. Sex can be obtained.
- the second covering member 140F is formed of a transparent elastic material sheet such as an acrylic gel sheet, a silicone rubber sheet, or a polyurethane gel sheet
- the second covering member 140F has flexibility, so that it can be easily placed on the first covering member 140E. It is possible to affix to the first and second covering members 140E and 140F, and bubbles and the like are suppressed from entering.
- the outer extension 142a and the inner extension 142b are also formed of a transparent elastic material, the outer extension 142a and the inner extension 142b are easily cut in the fourth step and the fifth step. can do.
- the adhesive 151 applied on the second covering member 140F is unlikely to spill due to the tackiness of the transparent elastic material. Further, due to the elasticity of the transparent elastic material, the stress applied between the display panel 110 and the light guide lens 150 is absorbed, and the strength of the panel can be increased.
- the second covering member 140F is formed of an acrylic resin sheet, excellent chemical resistance and wear resistance can be obtained.
- the adhesive 151 is applied in a state where the adhesive receiving portion 170 is installed at a position depending from the peripheral edge of the extending portions 142a and 143a.
- the adhesive 151 ⁇ / b> A that has flowed down may be received by a method other than installing the adhesive receiver 170.
- the peripheral edge surface 140S of the covering member 140, the outer side surface 130S of the front housing part 131, and the outer peripheral side surface 150S of the light guide member 150 are formed so as to be flush with each other.
- the outer peripheral side surface 150 ⁇ / b> S of the light guide member 150 may be formed to be located outward from the outer surface 130 ⁇ / b> S of the front housing part 131.
- the light guide members 150 are combined with no gap between the adjacent display devices 100, while there is a gap between the housings 130. It will be.
- the arrangement position of the light guide member 150 is determined in consideration of the fact that the width of the frame area of the display panel 110 differs depending on the location of the display device 100 according to the third embodiment. Also in the display device 100 having the configuration of 2 or 2, it is preferable to determine the arrangement position of the light guide member 150 in consideration of the fact that the width of the frame region of the display panel 110 varies depending on the location.
- the configuration in which the light guide member 150 is provided in a frame shape corresponding to the outer peripheral edge of the casing 130 of the display device 100 has been described.
- the light guide member 150 is not necessarily provided in a frame shape. It does not have to be.
- the light guide member 150 is provided corresponding to at least a portion of the outer peripheral edge of the display device 100 that becomes a boundary with an adjacent display device when the multi-display system 10 is configured by combining the plurality of display devices 100. It only has to be done.
- the display device 100 has been described as related to a liquid crystal display device.
- the display device 100 is not limited thereto.
- Plasma display plasma addressed liquid crystal display (PALC), field emission display (FED (field display)), or surface field display (SED (surface-conduction electron-emitter display)
- the display panel 110 may be driven by a field sequential color system.
- the present invention is useful for a display device manufacturing method, a display device, and a multi-display system. More specifically, the present invention relates to a method of manufacturing a display device in which a light guide member is provided at the peripheral edge to constitute a multi-display system that displays seamless seamless images, and a multi-display system that displays seamless images. This is useful for a display device that constitutes a multi-display system and a multi-display system that displays seamless images.
- Multi-display system 100 Display device 110 Display panel 110B Display viewing side surface (surface) 111A, 111B Substrate 113 Liquid crystal layer 130 Case 130F Flange portion 130S Case outer surface 131W Window portion 140 Cover member 140A First sheet (first cover member) 140B Second sheet (second covering member) 140C 1st coating
Abstract
Description
上記被覆部材表面に、表示パネルからの出射光を表示パネルの外方へ導光する導光部材を、上記筐体の外周縁部に対応して接着剤を介して配置する第2工程と、
上記接着剤を硬化して上記導光部材を上記被覆部材に接着する第3工程と、を備える。
上記第3工程の後、上記延出部付き被覆部材から上記延出部を切除する第4工程をさらに備えることが好ましい。
上記第3工程の後且つ上記第4工程とは独立に、上記延出部付き被覆部材から上記内側延出部を切除する第5工程をさらに備えることが好ましい。
上記第5工程において、上記第2被覆部材の内周側端面が上記第1被覆部材の内周側端面及び上記導光部材の内周側端面と面一となるように上記内側延出部を切除することが好ましい。
上記表示パネルを内包し、該表示パネルの表示画像を外部から視認可能とする窓部及び該窓部を囲う窓枠部分を構成し内側に延びたフランジ部を有する筐体と、
上記表示パネルの表面に積層され、厚さ方向の一部が上記窓部に収容されると共に該厚さ方向における残り部分が当該収容部分の少なくとも一部及び上記フランジ部の外面の少なくとも一部を覆う透明な被覆部材と、
上記被覆部材表面の外周縁部に接着剤で接着され、表示パネルからの出射光を表示パネルの外方へ導光する導光部材と、を有する。
(マルチディスプレイシステム)
図1は、マルチディスプレイシステム10の概略イメージ図である。マルチディスプレイシステム10は、例えば、大画面表示を行うデジタルサイネージ用途等に用いられる。
図3及び4は、それぞれ、表示装置100の断面図及び概略平面図である。表示装置100は、画像表示を行う表示パネル110、表示パネル110に光を入射させるバックライトユニット120、表示パネル110及びバックライトユニット120を内包する筐体130、表示パネル110の表示視認側表面110Bを覆って保護する第1シート(第1被覆部材)140A及び第2シート(第2被覆部材)140B(以下、まとめて被覆部材140と称することもある)、並びに、表示パネル110の周縁部に対応して設けられた導光部材150を備える。
次に、上述した構成の表示装置100の製造方法について説明する。ここでは、図6のフロー図を用いて、準備工程、第1工程、第2工程、第3工程、及び第4工程に分けて詳細に説明する。
はじめに、表示パネル110、バックライトユニット120、前面筐体部131、背面筐体部132、第1シート140A、延出部付き第2シート142、導光部材150を準備する。なお、表示パネル110は、従来公知の方法で作製する。
まず、バックライトユニット120を、背面筐体部132に固定する。そして、図7に示すように、表示パネル110の表示視認側表面110Bの周縁部、または前面筐体部131のフランジ部130Fの内面にスペーサ133を枠状に配置して、前面筐体部131のフランジ部130Fの内面と表示パネル110の表示視認側表面110Bの周縁部とを固着する。次いで、前面筐体部131と背面筐体部132とを前面筐体部131の側壁面の内側と背面筐体部132の側壁面の外側とが当接して互いに支持するようにネジ止め等により組み立てる。これにより、表示パネル110とバックライトユニット120とが筐体130に内包される。
次に、図8に示すように、延出部142aの周縁端から垂下する位置に延出部付き第2シート142の外周を取り囲むように、樋状の接着剤受け部170を設置する。接着剤受け部170は、例えばステンレス材を加工して形成されている。
次いで、ステップS131において、図9に示すように、導光部材150と延出部付き第2シート142間に介在された接着剤151を、紫外線照射及び/または加熱により硬化する。紫外線照射によって接着剤151の硬化を行う場合には、導光部材150以外の領域をマスクした状態で紫外線の照射を行ってもよい。これにより、導光部材150が延出部付き第2シート142に接着される。
続いて、ステップS141において、図10に示すように、延出部付き第2シート142から、例えばアクリルカッターを用いて延出部142aを切除する。このとき、前面筐体部131の外側面130S及び導光部材150の外周側側面150Sと面一になるように、延出部付き第2シート142から延出部142aを切除する。延出部付き第2シート142から延出部142aを切除することにより、延出部付き第2シート142の第2シート140Bとなる部分だけが残ることとなる。
実施形態1によれば、第1工程において、筐体130のフランジ部130Fの外面を覆うように延出部付き第2シート142を配置するので、第2工程において、延出部付き第2シート142上の所定の部分に導光部材150を配置することにより接着剤151が押し広げられても、接着剤151が筐体130の内部に垂れ落ちることがない。
次に、実施形態1の変形実施例について説明する。
実施形態1では、第1シート140Aが表示パネル110の少なくとも表示領域の全面を覆うように設けられ、第2シート140Bが第1シート140Aの表示パネル110とは反対側表面の全面を覆うように設けられているとして説明したが、特にこれに限定されない。例えば、図11及び12に変形例1として示すように、第2シート140Bが第1シート140Aの周縁部を枠状に覆うように貼設されていてもよい。また、図13及び14に変形例2として示すように、第1シート140Aが表示パネル110の表示領域の中央部分を覆わないように枠状に設けられ、さらに、第2シート140Bが第1シート140Aの周縁部を枠状に覆うように設けられていてもよい。
実施形態1では、第1シート140Aとしてアクリル樹脂からなるアクリルシートを用いるとして説明したが、第1シート140Aの代わりにタッチパネルシート160を貼設してもよい。
実施形態1では、第1工程において延出部付き第2シート142を積層するとして説明したが、例えば、図16に変形例4として示すように、第2シート142が延出部を備えていなくてもよい。この場合でも、第2シート142が筐体130のフランジ部130Fを覆うように配置されるので、接着剤151が筐体130の内部に垂れ落ちることがない。なお、この場合には、製造方法において第4工程は不要となる。
(表示装置)
続いて、本発明の実施形態2にかかる表示装置100について説明する。表示装置100は、実施形態1と同様に、複数を組み合わせることによりマルチディスプレイシステム10を構成する。
次に、上述した構成の表示装置100の製造方法について説明する。ここでは、図19のフロー図を用いて、準備工程、第1工程、第2工程、第3工程、及び第4工程に分けて説明する。
はじめに、表示パネル110、バックライトユニット120、前面筐体部131、背面筐体部132、延出部付き被覆部材143、導光部材150を準備する。なお、表示パネル110は、従来公知の方法で作製する。
まず、実施形態1と同様にして、表示パネル110とバックライトユニット120を筐体130に内包するように、表示パネル110、バックライトユニット120、前面筐体部131、及び背面筐体部132を組み立てる。
次に、図20に示すように、延出部143aの周縁端から垂下する位置に延出部付きシートの外周を取り囲むように、樋状の接着剤受け部170を設置する。
次いで、実施形態1と同様に、ステップS231において導光部材150と延出部付き被覆部材143の間に介在する接着剤151を、紫外線照射及び/または加熱により硬化する。
続いて、実施形態1と同様に、ステップS241において延出部付き被覆部材143から延出部143aを切除する。このとき、前面筐体部131の外側面130S及び導光部材150の外周側側面150Sが面一になるように、延出部付き被覆部材143から延出部143aを切除する。延出部付き被覆部材143から延出部143aを切除することにより、延出部付き被覆部材143の被覆部材140となる部分だけが残ることとなる。
実施形態2によれば、第1工程において、延出部付き被覆部材143の第2被覆部140Dの周縁部が筐体130のフランジ部130Fの外面を覆うように延出部付きシートを配置するので、第2工程において、延出部付き被覆部材143の表面の所定の部分に導光部材150を配置することにより接着剤151が押し広げられても、接着剤151が筐体130の内部に垂れ落ちることがない。
(表示装置)
続いて、本発明の実施形態3にかかる表示装置100について説明する。表示装置100は、実施形態1と同様に、複数を組み合わせることによりマルチディスプレイシステム10を構成する。
次に、上述した構成の表示装置100の製造方法について説明する。ここでは、図24のフロー図及び図25~30を用いて、準備工程、第1工程、第2工程、第3工程、第4工程、及び第5工程に分けて説明する。
はじめに、表示パネル110、バックライトユニット120、前面筐体部131、背面筐体部132、延出部付き被覆部材142、導光部材150を準備する。なお、表示パネル110は、従来公知の方法で作製する。
まず、バックライトユニット120を、背面筐体部132に固定する。そして、図7に示すように、表示パネル110の表示視認側表面110Bの周縁部、または前面筐体部131のフランジ部130Fの内面にスペーサ133を枠状に配置して、前面筐体部131のフランジ部130Fの内面と表示パネル110の表示視認側表面110Bの周縁部とを固着する。次いで、前面筐体部131と背面筐体部132とを前面筐体部131の側壁面の内側と背面筐体部132の側壁面の外側とが当接して互いに支持するようにネジ止め等により組み立てる。これにより、表示パネル110とバックライトユニット120とが筐体130に内包される。
次に、ステップS321において、作製中の表示装置を傾けるために治具J1及びスペーサS1を配置する。治具J1は、表示装置を傾けた状態において前側筐体部131のフランジ部130Fと同じ高さになる部分と、段差を介してそれよりも高くなった部分と、を有する筐体状のものである。スペーサS1は、背面筐体部132の下に配置することにより、筐体背面部132の底辺を支点として表示装置全体が治具J1にもたれ掛かるように傾けるものである。そして、図27に示すように治具J1及びスペーサS1を利用して表示装置全体を傾けて配置する。
次いで、パネル内方にはみ出した接着剤151Bを簡単に拭き取り、その後、実施形態1と同様に、ステップS331において導光部材150と延出部付き被覆部材142の間に介在する接着剤151を、紫外線照射及び/または加熱により硬化する。
続いて、実施形態1と同様に、ステップS341において、延出部付き被覆部材142から外側延出部142aを切除すると共に、延出部付き被覆部材142から内側延出部142bを切除する。外側延出部142aの切除は、図29中にC4で示す位置にカッターを入れることにより、第2被覆部材140Fの外周側端面140Sと導光部材150の外周側側面150Sとが面一となるように行う。また、内側延出部142bの切除は、図29中にC5で示す位置にカッターを入れることにより、第2被覆部材140Fの内周側端面と第1被覆部材140Eの内周側端面140Tとが面一となるように行う。内側延出部142bを切除する際、内側延出部142bと表示パネル110表面との間には第1被覆部材140Eの厚さに相当する隙間が存在するので、表示パネル110の表面を傷つけることなく、内側延出部142bを切除することができる。これにより、図30に示すように、表示装置100が作製される。
実施形態3によれば、第1工程において、筐体130のフランジ部130Fの外面を覆うように延出部付き被覆部材142を配置するので、第2工程において、延出部付き被覆部材142上の所定の部分に導光部材150を配置することにより接着剤151が押し広げられても、接着剤151が筐体130の内部に垂れ落ちることがない。
実施形態3では、液晶表示装置100の製造方法の第4工程において、外側延出部142aの除去を導光部材150の外周側側面150Sを基準にして行うとして説明したが、例えば、図31に変形例7として示すように、前側筐体部131の外側面130Sを基準にして外側延出部142aを切除してもよい。この場合、図32に示すように、第2被覆部材140Fの外周側側面140Sと筐体130の外側面130Sとが面一に形成される。
上記の実施形態1及び2では、表示装置の製造方法の第2工程において、延出部142a,143aの周縁端から垂下する位置に接着剤受け部170を設置した状態で接着剤151の塗布を行うとして説明したが、接着剤受け部170を設置する以外の方法により流れ落ちた接着剤151Aを受け止めてもよい。
100 表示装置
110 表示パネル
110B 表示視認側表面(表面)
111A,111B 基板
113 液晶層
130 筐体
130F フランジ部
130S 筐体の外側面
131W 窓部
140 被覆部材
140A 第1シート(第1被覆部材)
140B 第2シート(第2被覆部材)
140C 第1被覆部
140D 第2被覆部
140S 被覆部材の周縁端面
142 延出部付き第2シート(延出部付き第2被覆部材)
142a 延出部(外側延出部)
142b 内側延出部
143 延出部付き被覆部材
143a 延出部
150 導光部材
150S 導光部材の外周側側面
151,151A,151B 接着剤
160 タッチパネルシート(第1被覆部材)
170 接着剤受け部
Claims (29)
- 窓部及び該窓部を囲う窓枠部分を構成し内側に延びたフランジ部を有する筐体の内部に表示パネルを配置し、厚さ方向の一部が上記窓部に収容可能であると共に該厚さ方向における残り部分が当該収容部分の少なくとも一部及び上記フランジ部の外面の少なくとも一部を覆う被覆部材を、該厚さ方向の一部が該窓部に収容されるように表示パネルの表面に積層する第1工程と、
上記被覆部材表面に、表示パネルからの出射光を表示パネルの外方へ導光する導光部材を、上記筐体の外周縁部に対応して接着剤を介して配置する第2工程と、
上記接着剤を硬化して上記導光部材を上記被覆部材に接着する第3工程と、
を備えた表示装置の製造方法。 - 上記第1工程において、上記被覆部材は外方に延出する延出部をさらに備えた延出部付き被覆部材であって、
上記第3工程の後、上記延出部付き被覆部材から上記延出部を切除する第4工程をさらに備える
ことを特徴とする請求項1に記載の表示装置の製造方法。 - 上記被覆部材は、上記窓部に収容された第1被覆部材と、該第1被覆部材及び上記フランジ部の外面の少なくとも一部を覆う第2被覆部材とが重ね合わされて構成されている
ことを特徴とする請求項1または2に記載の表示装置の製造方法。 - 上記被覆部材は、上記窓部に収容された第1被覆部と、該第1被覆部及び上記フランジ部の外面の少なくとも一部を覆う第2被覆部とで一体に形成されている
ことを特徴とする請求項1または2に記載の表示装置の製造方法。 - 上記第1工程において、上記被覆部材は上記表示パネルの表面の少なくとも表示領域全面を覆うように積層する
ことを特徴とする請求項1~4のいずれか1項に記載の表示装置の製造方法。 - 上記第1工程において、上記被覆部材は上記表示パネルの表面の周縁部を枠状に覆うように積層する
ことを特徴とする請求項1~4のいずれか1項に記載の表示装置の製造方法。 - 上記第4工程において、上記被覆部材の周縁端面が、上記筐体の外側面及び上記導光部材の外周側側面の少なくとも一方と面一となるように上記延出部付き被覆部材から延出部を切除する
ことを特徴とする請求項2に記載の表示装置の製造方法。 - 上記第1工程において、上記被覆部材は上記窓部に収容された第1被覆部材と、該第1被覆部材及び上記フランジ部の外面の少なくとも一部を覆う第2被覆部材とが重ね合わせて構成され、且つ、該第2被覆部材が表示パネル内方に延出する内側延出部をさらに備えた延出部付き被覆部材であって、
上記第3工程の後且つ上記第4工程とは独立に、上記延出部付き被覆部材から上記内側延出部を切除する第5工程をさらに備える
ことを特徴とする請求項6に記載の表示装置の製造方法。 - 上記第2工程において、上記導光部材をその内周側端面が上記第1被覆部材の内周側端面と面一になるように配置し、
上記第5工程において、上記第2被覆部材の内周側端面が上記第1被覆部材の内周側端面及び上記導光部材の内周側端面と面一となるように上記内側延出部を切除する
ことを特徴とする請求項8に記載の表示装置の製造方法。 - 上記被覆部材はアクリル樹脂で形成されている
ことを特徴とする請求項1~9のいずれか1項に記載の表示装置の製造方法。 - 上記第1被覆部材は透明弾性材で形成されている
ことを特徴とする請求項3,8及び9のいずれか1項に記載の表示装置の製造方法。 - 上記第2被覆部材はポリエチレンテレフタラート樹脂またはトリアセチルセルロース樹脂で形成されている
ことを特徴とする請求項3,8,9及び11のいずれか1項に記載の表示装置の製造方法。 - 上記第2被覆部材は透明弾性材で形成されている
ことを特徴とする請求項3,8,9及び11のいずれか1項に記載の表示装置の製造方法。 - 上記第2被覆部材はアクリル樹脂で形成されている
ことを特徴とする請求項3,8,9及び11のいずれか1項に記載の表示装置の製造方法。 - 上記表示パネルは、2枚の基板間に液晶層が設けられた液晶表示パネルである
ことを特徴とする請求項1~14のいずれか1項に記載の表示装置の製造方法。 - 表示パネルと、
上記表示パネルを内包し、窓部及び該窓部を囲う窓枠部分を構成し内側に延びたフランジ部を有する筐体と、
上記表示パネルの表面に積層され、厚さ方向の一部が上記窓部に収容されると共に該厚さ方向における残り部分が当該収容部分の少なくとも一部及び上記フランジ部の外面の少なくとも一部を覆う透明な被覆部材と、
上記被覆部材表面の外周縁部に枠状に接着剤で接着され、表示パネルからの出射光を表示パネルの外方へ導光する導光部材と、
を有する表示装置。 - 上記被覆部材は、上記窓部に収容された第1被覆部材と、該第1被覆部材及び上記フランジ部の外面の少なくとも一部を覆う第2被覆部材とが重ね合わされて構成されている
ことを特徴とする請求項16に記載の表示装置。 - 上記被覆部材は、上記窓部に収容された第1被覆部と、該第1被覆部及び上記フランジ部の外面を覆う第2被覆部とで一体に形成されている
ことを特徴とする請求項16に記載の表示装置。 - 上記被覆部材は、上記表示パネルの表面の少なくとも表示領域全面を覆うように貼設されている
ことを特徴とする請求項16~18のいずれか1項に記載の表示装置。 - 上記被覆部材は、上記表示パネルの表面の周縁部を枠状に覆うように貼設されている
ことを特徴とする請求項16~18のいずれか1項に記載の表示装置。 - 上記被覆部材の周縁端面は、上記導光部材の外周側の側面及び上記筐体の外側面の少なくとも一方と面一である
ことを特徴とする請求項16~20のいずれか1項に記載の表示装置。 - 上記被覆部材は上記窓部に収容された第1被覆部材と、該第1被覆部材及び上記フランジ部の外面の少なくとも一部を覆う第2被覆部材とが重ね合わせて構成され、
上記第2被覆部材の内周側端面は上記第1被覆部材の内周側端面及び上記導光部材の内周側端面の少なくとも一方と面一である
ことを特徴とする請求項20に記載の表示装置。 - 上記被覆部材はアクリル樹脂で形成されている
ことを特徴とする請求項16~22に記載の表示装置。 - 上記第1被覆部材は透明弾性材で形成されている
ことを特徴とする請求項17または22に記載の表示装置。 - 上記第2被覆部材はポリエチレンテレフタラート樹脂またはトリアセチルセルロース樹脂で形成されている
ことを特徴とする請求項17,22及び24のいずれか1項に記載の表示装置。 - 上記第2被覆部材は透明弾性材で形成されている
ことを特徴とする請求項17,22及び24のいずれか1項に記載の表示装置。 - 上記第2被覆部材はアクリル樹脂で形成されている
ことを特徴とする請求項17,22及び24のいずれか1項に記載の表示装置。 - 上記表示パネルは、2枚の基板間に液晶層が設けられた液晶表示パネルである
ことを特徴とする請求項16~27のいずれか1項に記載の表示装置。 - 請求項16~28のいずれか1項に記載された表示装置を複数組み合わせて大画面表示を行うマルチディスプレイシステム。
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