WO2005093502A1 - 表示ユニット、導光板及び情報機器 - Google Patents
表示ユニット、導光板及び情報機器 Download PDFInfo
- Publication number
- WO2005093502A1 WO2005093502A1 PCT/JP2004/004027 JP2004004027W WO2005093502A1 WO 2005093502 A1 WO2005093502 A1 WO 2005093502A1 JP 2004004027 W JP2004004027 W JP 2004004027W WO 2005093502 A1 WO2005093502 A1 WO 2005093502A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light guide
- guide plate
- light
- reinforcing member
- display unit
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0093—Means for protecting the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
- G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S385/00—Optical waveguides
- Y10S385/901—Illuminating or display apparatus
Definitions
- the present invention relates to a reinforcing structure of a light guide plate used for a liquid crystal display (LCD) panel, and the like, and relates to a display unit, a light guide plate, and an information device which prevent temperature and humidity changes in a use environment.
- LCD liquid crystal display
- FIG. 1 A display unit using an LCD panel, for example, is shown in FIG. 1
- the display unit 2 is provided with a light guide plate 8 on the rear side (non-display surface side) of the display panel 4 with a plurality of films 6 interposed therebetween, and a light source 10 is provided on the side surface of the light guide plate 8. It is installed strongly.
- the light source 10 is surrounded by the reflector 12 and is regulated by the radiation force of the light 14. This light 14 is applied to the back side of the display panel 4 through the light guide plate 8.
- the light guide plate 8 is provided with an R-shaped surface 18 having an inclined surface by setting the light incident portion 16 side to be thick and the opposite side portion to be thin, and displaying the light 14 from the light source 10 to the display panel 4. Is a light guide member that efficiently and uniformly guides the light to the back side of the light guide.
- the display unit 2 is provided with a control board 20 and a dry chip IC 22 used for display control.
- Such a display unit 2 is used in various display devices, such as being incorporated in a display unit of a portable personal computer and used for displaying information, and is required to be thin and lightweight.
- the light guide plate 8 has been modified.
- an acrylic plate is used.
- the light guide plate 8 is formed to be thin, the rigidity of the foot guide 8 is reduced, and deformation such as expansion or bending easily occurs due to a change in environmental temperature or humidity.
- the deformed light guide plate 8 comes into contact with the glass cell side of the display panel 4, it affects the liquid crystal display and the outer shape of the display unit 2. For example, as shown by the dashed line a in FIG.
- the light guide plate 8 is bent to the display panel 4 side and comes into contact with the cell of the display panel 4, and the stress caused by its deformation is applied to the display panel 4 from the light guide 8. As a result, the liquid crystal layer gap of the display panel 4 changes, etc. Doing so may affect the display and reduce the display quality. For this reason
- the light guide plate 8 is designed and manufactured so as to be warped toward the rear surface as shown by a broken line b in FIG. Such deformation to the rear surface side causes the outer shape of the display unit 2 to change. With respect to the prevention of such deformation of the display unit, for example, Japanese Patent Application Laid-Open Nos. H05-56822 and H10-10325 exist as prior arts.
- a main frame 24 surrounding the periphery of the conductor 8 is provided.
- a plurality of reinforcing frames 26, 28 are installed between the upper edge of the 4 and the lower iif ⁇ , and the light guide ⁇ 8 is changed by strengthening the frame 24 with the reinforcing frames 26, 28. Prevent shape.
- the reinforcing frames 26 and 28 are fixed to the frame 24 with screws or the like, and are relatively wide and band-shaped, so that the frame structure is robust.
- the thickness and force of the light guide plate 8 and the reinforcing frame 26 (or 28) are increased, and the display unit 2 is prevented from being thin and light.
- the reinforcing frames 26 and 28 that reinforce the frame 24 cannot be installed.
- a reinforcing plate 30 is embedded inside a light guide plate 8 to guide the light.
- the rigidity of the light plate 8 is increased.
- the capturing plate 30 is a force arranged perpendicular to the cold-cathode tube 32 serving as a light source.
- the reinforcing plate 30 embedded in the light guide plate 8 is used to propagate the light 14 in the light guide ⁇ 8. This affects the diffusion of light 14, causing unevenness or shadows 3 4. This affects the liquid crystal display and causes the display quality to deteriorate.
- the light capturing plate 30 in the light guide plate 8 blocks the light 14 and prevents the diffusion of the light 14. In this way, even if the rigidity of the light guide ⁇ 8 is increased by installing the reinforcing plate 30, if the strength of the capturing plate 30 is strongly reduced, the setting of the reinforcing plate 30 is practical. Poor.
- the reinforcing frames 26, 28 are installed to indirectly prevent the light guide plate 8 from being deformed, or the reinforcing plate 30 is built into the light guide plate 8.
- the control unit 20 and the drive board are provided on the rear side to reduce the thickness and weight of the display unit 2.
- the present invention relates to a display unit using a display panel, and an object of the present invention is to provide a display unit that solves the above-mentioned problems of the related art.
- An object of the present invention is to provide a display unit using a panel, and to prevent the light guide plate from sliding without deteriorating the degree of freedom of a space on the back side of the light guide plate.
- a display unit of the present invention is a display unit including a light guide plate for guiding light of a light source for display on a display panel, wherein the light guide plate is directed in a direction intersecting with an incident direction of the light. Is provided with a reinforcing member that straddles between the side portions.
- a light guide plate of the present invention is a light guide plate for guiding light of a light source for display on a display panel, and is provided on a back side between side portions in a direction intersecting with the light incident direction. This is a configuration including a straddling reinforcing member.
- an information device of the present invention includes a processing unit for performing information processing, a display panel for displaying the information processing, and a light guide plate for guiding light of a light source for display on the display panel.
- An information device comprising: a reinforcing member that straddles the light guide plate between side portions in a direction intersecting with the light incident direction.
- the reinforcing member is provided. Since the light guide plate is mechanically reinforced between the side portions by the juxtaposition and the reinforcement, the change due to the temperature and humidity changes in the use environment is prevented, and the resistance to the environment is enhanced. In this case, since the reinforcing member is installed in the light guide plate in a direction intersecting with the light incident direction, it does not hinder the installation of the light source and does not hinder the light diffusion in the light guide plate.
- the light source is installed on a side surface of a display unit, and the light guide plate is formed by thickening a light incident surface and thinning a side surface opposite to the light incident surface. It is good also as composition which reflects the above-mentioned light in the back part of the bottom of a light guide, and guides it to the back part of the above-mentioned display panel. That is, the installation of the capturing member does not hinder such a configuration.
- the reinforcing member is provided on the back side of the light guide plate, and the thickness of the light guide and the reinforcing member does not exceed the thickness of the light incident surface portion of the light guide plate. It may be configured. With such a configuration, since the light capturing member is provided within the range of the thickness of the light incident surface portion of the light guide plate, the thickness of the display unit is not increased and the appearance is not impaired.
- a control device is provided on a back surface of the light guide plate, and the thickness of the light guide plate and the control device does not exceed the thickness of the light entrance surface of the light guide plate. It may be. With such a configuration, since the control device is installed within the range of the thickness of the light incident surface of the light guide plate, the thickness of the display unit and the appearance of the display unit are not impaired.
- the reinforcing member may be fixed to a side surface of the light guide plate.
- the light guide plate is reinforced by the capturing members fixed between the side portions of the light guide plate.
- the reinforcing member may have a configuration including a plurality of beams, or may have a configuration in which the beams are combined at an intermediate portion.
- the reinforcing member is formed using the beam, and the light guide ⁇ can be strengthened with a compact structure, and the reinforcing strength can be increased.
- a configuration may be adopted in which a reflection member is interposed between the reinforcing member and the light guide plate.
- the reinforcing member does not affect the optical system at all, and the reflecting member and the light guide plate can be brought into close contact with each other by installing the capturing member. it can.
- a chassis installed around the light guide plate, a rib formed on a side surface of the light guide plate, and a chassis formed corresponding to the rib are formed on the chassis.
- the rib fixed to the reinforcing member may be inserted into the recess of the chassis.
- It may be composed of a tip material or a channel material. With such a configuration, rigidity that can resist expansion and deformation due to environmental changes of the light guide plate is obtained according to the characteristics and shape of the material, and by configuring the light guide plate with a member having appropriate elasticity, Deformation of the light guide plate is prevented.
- the display panel and the light guide plate are built in a display housing, and the processing unit is built in a device main body.
- the body may be configured to be movably connected to the device main body. That is, the scythe is provided in the display housing together with the display panel with a structure reinforced by the reinforcing member, and the display housing can be configured to be rotatable with respect to the device body.
- the light guide plate is strengthened by the reinforcing member, it is possible to prevent deformation of the light guide plate due to changes in the temperature and humidity of the use environment, and to achieve a highly reliable display unit.
- a light guide plate or an information device can be realized.
- the resistance to changes in the temperature and humidity of the use environment is enhanced, and the display quality is not deteriorated due to the deformation of the light guide plate.
- a reinforcing member can be provided on the back surface of the light guide plate, and a reinforcing structure of the light guide plate can be realized, and the light guide can be made thinner by strong light. It can contribute to thin and light weight.
- FIG. 1 is a diagram showing a basic structure of a display unit.
- FIG. 2 is a perspective view showing a frame used for the display unit.
- FIG. 3 is a diagram showing a light guide plate in which a reinforcing frame is installed on a back surface.
- FIG. 4 is a view showing a display unit using a frame provided with a reinforcing frame.
- FIG. 5 is a perspective view showing the effect of the reinforcing plate installed inside the light guide plate.
- FIG. 6 is a perspective view showing a display unit according to the first embodiment of the present invention.
- FIG. 7 is an exploded perspective view showing a reinforcing structure of the light guide plate.
- FIG. 8 is a cross-sectional view showing a portion of the light guide plate captured by the reinforcing beam.
- FIG. 9 is a side view showing a light guide plate reinforced with a reinforcing beam.
- FIG. 10 is a perspective view showing a light guide plate and a reinforcing beam of the display unit according to the second embodiment of the present invention.
- FIG. 11 is a perspective view showing a light guide plate and a capturing beam of a display unit according to a third embodiment of the present invention.
- FIG. 12 is a perspective view showing a light guide and a reinforcing beam of a display unit according to a fourth embodiment of the present invention.
- FIG. 13 is a cross-sectional view showing a light guide ⁇ reinforced with a reinforcing beam.
- FIG. 14 is an exploded perspective view showing the display unit according to the fifth embodiment of the present invention.
- FIG. 15 is a rear view showing the display unit according to the fifth embodiment.
- FIG. 16 is a perspective view showing a form of a linear material used for a reinforcing beam.
- FIG. 1A is a perspective view showing a form of a linear material used for an intensifying beam.
- FIG. 18 is a perspective view showing a form of a linear material used for the reinforcing beam.
- FIG. 19 is a perspective view showing a form of a linear material used for the reinforcing beam.
- FIG. 20 is a perspective view showing an f3 ⁇ 4 device according to the sixth embodiment.
- FIGS. Fig. 6 is a perspective view showing the capturing structure at the foot of the display unit
- Fig. 7 is an exploded perspective view showing the reinforcing structure of the light guide plate
- Fig. 8 is a sectional view of the light guide plate showing the reinforcing portion
- Fig. 9 is the light guide plate. It is a side view which shows the reinforcement structure of a light plate.
- the display unit 40 includes a light guide plate 44 and a reflection sheet 46 on the back of a display panel 42 such as a liquid crystal display (LCD) panel, and a side surface of the display unit 40.
- a light source 48 composed of, for example, a cold-cathode tube is installed on the light-entering side of the light guide plate 44, and the light emitted from the light source 48 is passed through the light guide plate 44. Irradiated on the side.
- the light guide plate 44 is a light guide interposed between the light source 48 and the display panel 42, and is configured to uniformly irradiate the light 50 from the light source 48 to the rear side of the display panel 42.
- it is formed of a transparent light-guiding material such as synthetic resin or glass.
- the light guide plate 44 of this embodiment is a rectangular thin plate as shown in FIG. 7, but if viewed in terms of shape and function, the light incident surface portion 52, the reflection surface portion 54, and the light exit surface portion 5 6 together with side portions 58, 60 and 62 to form a flat hexahedron.
- the light incident surface portion 52 is a surface portion that receives light from the light source 48, and the thickness t of the light incident surface portion 52 is t! Is set to be larger than the thickness t 2 ( ⁇ t,) of the opposing side surface portion 58, so that the light incident area of the light 50 is set large.
- the reflecting surface portion 54 is a surface portion that diffuses the light 50 and guides the light 50 toward the light emitting surface portion 56 together with the light reflecting function of the reflecting sheet 46. In order to receive 50 and enhance the light reflection function, it is an inclined surface with respect to the light emitting surface portion 56 and forms a non-parallel surface with the light emitting surface portion 56.
- the reflection sheet 46 has the same shape as the small surface portion 54, and the reflection surface portion 54 is formed, for example, on an uneven surface that causes diffused reflection.
- the light emitting surface portion 56 is a surface portion for outputting the light 50 from the light source 48 to the display panel 42 side, and is formed of, for example, a flat surface.
- the opposing side surfaces 60 and 62 are strongly different from each other in the thicknesses t, and 1 2 (t.> T 2 ) of the light incident surface portion 52 and the side surface portion 58, and the reflecting surface portion 54 and the light emitting surface portion are different from each other. Since it forms a force non-parallel surface with 56, it has a trapezoidal surface.
- a capturing beam 64 is strongly attached as a capturing member between the side surfaces 60 and 62 of the light guide ⁇ 44, and the reinforcing beam 64 is a side surface in a direction intersecting the direction of light 50 emitted by humans.
- the light guiding member 44 is provided so as to straddle between 0 and 62.
- the light guide member 44 is gripped by the reinforcing beam 64 provided between the force side portions 60 and 62. That is, the reinforcing beam 64 is fixed to the bridging portion 66 extending between the side portions 60 and 62 of the sickle guide 44, and the reinforcing beam 64 is fixed to both ends of the bridging portion 66.
- a hook portion 68 is provided as a portion, and for example, a member having high rigidity and elasticity is formed of, for example, a metal wire made of metal such as stainless steel.
- the bridging portion is composed of a single beam with a strong force.
- prismatic ribs 74 made of the same material as the light guide 44 are formed on the side surfaces 60 and 62 of the light guide 44, and a reinforcing beam is provided on each rib 74.
- Each hooked portion of 6 4 bows 6 8
- each hooking portion 68 has a bent shape in which a member on the extension of the bridging portion 66 is locked along the peripheral surface of the rib 4.
- Reinforcing beams 6 4 each ⁇ portions 6 equal to or slightly smaller than the width W 2 of the 8 distance width between the width W 2 of the side surface portion 5 8 of the light guide plate 4 4, i.e., set to I ⁇ W 2.
- Such a width setting can be performed arbitrarily by forming the bridging portion 66 with a metal wire by its length and bending. As shown in FIG. 8, when such a reinforcing beam 64 is fixed to the light guide plate 44 by fixing the hooks 68 to the ribs 74 of the side surfaces 60 and 62 of the light guide plate 44.
- the reinforcing beam 6 4 acts on the back side of the light guide plate 4 4 in tension or restoring force according to the width of the light guide plate 4.
- 4 side 6 0, 6 2
- Strength reinforcement beam 6 4 Maintained while being held between the hooked portions 6 8 of 6 4, bridge portion 6 6
- Force guide 4 4 Reflective sheet on the back side of 4 4 6 Maintained closely on top.
- the force F due to the tension acting on the reinforcing beam 64 and the restoring force for returning to the original shape of the reinforcing beam 64 the force ⁇ the side portions 60 of the light guide plate 44 from each hooked portion 68 side , 62 between the light guide ⁇ 44 acts in the compression direction.
- a force F 2 is applied from the bridging portion 66 side.
- Such a light guide ⁇ 44 can improve the resistance to environmental changes, and even if there is a change in the environmental temperature or the environmental humidity, the light guide ⁇ 44 does not deform and the Since the flat state can be maintained, it is possible to prevent contact with the display panel 42 and deterioration of display quality due to the contact.
- the deformed acrylic plate is deformed in a high-temperature and high-humidity state due to the residual stress generated during the molding process.
- a reinforcing beam 6 4 having a bridging portion 6 6 bridging between 6 0 and 6 2 holds the side portion 6 0.6 of the light guide plate 4 4 and a bridging portion 6 6 on the back side.
- the light guide plate 44 is mechanically reinforced, and the holding force of the reinforcing beam 64 is reduced by the residual stress on the light guide plate 44 side against deformation caused in a high temperature and high humidity state. Therefore, the deformation of the light guide plate 44 can be reduced by ⁇ 1.
- the simulated state of the reinforcing beam 64 is such that the side surface portions 60 and 62 of the light guide plate 44 are maintained in a pressurized state (W, ⁇ W 2 ). A slight elongation in the width direction of 44 acts on the reinforcing beam 64 to obtain a spontaneous pressurized state, and the light guide plate 44 may be deformed by Pih.
- the bridging portion 66 of the reinforcing beam 64 is installed in a direction intersecting with the incident direction of the light 50 with respect to the light guide ⁇ 44, that is, the rib 7 4 is provided on the side surfaces 60 and 62, and the hooking portion 6 8 is attached forcibly, so that the reinforcing beam 6 4 can be installed avoiding the light source 48, and the installation power of the light source 48 is not hindered .
- the bridging portion 66 is provided on the back side of the light guide plate 44, the diffusion of the reinforcing beam 64 and the light in the light guide plate 44 is not hindered.
- the light guide plate 44 has an inclined surface formed by thickening the light incident surface 52 of the light 50 and thinning the side surface 58 opposite to the light incident surface 52.
- a bridging portion 66 is provided in a space 80 between the reflecting surface portion 54 composed of the light receiving surface portion 52 and the virtual surface 78 assumed on the reflecting surface portion 54 by the thickness t of the light incident surface portion 52 side. Configuration. Bridges are installed in the space 80, which is a marginal space, and the bridges are located within the virtual plane 78.
- the reinforcing beam 64 is installed on the back surface of the light guide plate 4 4. Even if the thickness of the light guide plate 4 4 is added to the strong beam 6 4, the thickness of the light input surface 5 2 t! Is within the range. In other words, if the display unit 40 has the same thickness as before, the display unit 40 with improved resistance to environmental changes can be realized, and the rigidity can be increased by installing the reinforcing beams 64.
- the display unit 40 can be made thinner and lighter.
- the reinforcing beam 64 is installed within the thickness in consideration of the thickness of the reflection sheet 46, the reinforcing beam 64 is installed on the light incident surface portion 5 of the light guide plate 44. 2 thickness t! It is installed with ample room inside.
- FIG. 10 is a perspective view showing a reinforcing structure using a reinforcing beam according to the second embodiment.
- the bridging portion 66 is composed of two upper and lower beams 66 A and 66 B by looping a metal wire.
- the U-shaped hooking portion 68 hooked on the rib 74 of the fourth piece is bent to the side of the rib 74.
- FIG. 11 is a perspective view showing a reinforcing structure using a reinforcing beam according to the third embodiment.
- the reinforcing beam 64 according to the third embodiment is obtained by forming a metal wire into a loop and hooking the rib 74 of the light guide plate 44 with a U-shaped hooking portion 68 bent toward the rib 74.
- the bridging portion 66 is composed of a plurality of beams 66A and 66B, and the intermediate portion thereof is joined by a joining portion 66C to form a cross beam structure in a bundle.
- FIG. 12 is a perspective view showing a reinforcing structure using a capturing beam according to the fourth embodiment
- FIG. 13 is a sectional view showing a reinforcing structure portion.
- the reinforcement beam 64 according to the fourth embodiment is formed by forming a bridge 70 together with a pair of bent portions 72 together with a pair of bent portions 72 to project and adhere to the side opposite to the side of the fem: 44. is there.
- the hooks 68 are fixed to the ribs 74 of the side surfaces 60 and 62 of the light guide plate 44, and the reinforcing beam 6 4
- the light guides in the width direction between the hook portions 6 8 ⁇ The tension and restoring force act on the reinforcing beam 64 at the back of the light guide 4 4, and the side portion 6 0.6 of the light guide plate 4 4.
- the space between 2 is maintained while being held between the hooks 6 and 8 of the reinforcing beam 6 4, and the abutment section 7 0 is reflected on the back side of the power guiding base 4 4 4 Will be maintained.
- the light guide plate 44 receives a force F t from the hooked portion 68 side due to the tension acting on the reinforcing beam 64 and the restoring force of returning to the original shape of the reinforcing beam 64, and the corresponding 70 side.
- the light guide plate 44 can be captured by acting on the light guide plate 44 with a force F 2 .
- FIG. 14 is an exploded perspective view showing the display unit according to the fifth embodiment
- FIG. 15 is a rear view showing the assembled display unit.
- the display unit 40 includes a rectangular frame 82 made of metal.
- the frame 82 includes a display panel 42, an optical laminated sheet 43, a light guide layer 44, and a reflection plate.
- Seat 46, chassis made of synthetic resin 84 Optical system product
- the layer sheets 43 constitute sheets having functions of brightness adjustment and light diffusion. In this embodiment, two light diffusion sheets 43 A and 43 B have two lenses. Sheets 43C and 43D are laminated.
- a hook portion 86 for fixing the chassis 84 is formed on the side of the frame 82, and a protrusion 88 formed on the side of the chassis 84 is inserted into the hook portion 86.
- the frame 82 and the chassis 84 are combined, and the display panel 42, the optical laminated sheet 43, the light guide plate 44, and the reflection sheet 46 are sandwiched and held therebetween.
- ribs 74 are formed on both sides of the light guide plate 44 for positioning and fixing the reinforcing beam 64.
- the ribs 74 are provided on the chassis 84.
- a concave portion 90 (FIG. 15) for inserting and fixing the rib 74 together with the positioning of 4 is formed strongly.
- the light guide plate 44 Before being combined with the chassis 84, the light guide plate 44 is attached to the ribs 74 by being hooked by the hooks 68 of the reinforcing beams 64 with the reinforcing beams 64. As described above, the light guide plate 44 is strongly captured by the reinforcing beam 64.
- the light guide plate 44 with the reinforcing beam 64 attached to the rib 74 is inserted into the concave portion 90 of the chassis 84 to be positioned and united with the chassis 84.
- the reinforcing beam 64 attached to the rib 74 is inserted into the concave portion 90 of the chassis 84, and is held and fixed between the rib 74 of the light guide plate 44 and the chassis 84. You. As a result, the fixing strength of the reinforcing beam 64 is enhanced by the combination of the chassis 84 and the light guide plate 44.
- a cold cathode fluorescent lamp is attached to the chassis 84 as the light source 48, and a control board 92 is installed as a control device for controlling the display of the display panel 42.
- IC94A, several dryno IC94B etc. are installed.
- the light source 48 is supplied with power from an inverter power supply or the like through a plug 98 attached to an end of a wire 96.
- the reinforcing beam 64 that reinforces the light guide 44 is made of a linear material such as a metal wire, and the reinforcing beam is also formed in a form that bridges the central portion of the light guide plate 44. Since it is attached, the installation space of the control board 92 on the back side of the light guide 44 is not impaired. In this embodiment, the control board 92 also has a margin on the back of the light guide 4. It has been installed. That is, the control devices such as the control board 92 and the control IC 94 A Since the thickness of the control device and the light guide plate 44 is within the range of the thickness (t,) of the light incident surface 52 of the light guide plate 44, the display unit 4 is installed. The thickness is reduced to zero.
- control IC 94A and the driver IC 94B on the control board 92 are not restricted by the arrangement of the reinforcing beam 64, and can be set and arranged at a free position on the upper surface of the control board 92. can do. As a result, the design freedom of the control circuit is increased.
- the light guide plate 44 will be gradually thinned in a wedge shape (FIG. 9).
- the space for installing the reinforcing beams 64 is secured, and the thickness of the display unit 40 does not increase.
- the light guide plate 44 and the reflection sheet 46 that is, the reflection plate
- the reinforcing beam 64 and the back surface of the light guide plate 44 are added. Since it is mounted on the side, there is no effect on optical systems such as the light guide plate 44 and the reinforcing beam 64.
- the reinforcing beam 64 is fixed using a rib 74 used for fixing and positioning the light guide 44 to the chassis 84, and is not a structure that blocks incident light or diffused light to the light guide plate 44. Therefore, it does not affect the light irradiation on the display panel 42 and does not degrade the display quality.
- the reinforcing beam 64 is installed on the side of the light guide 44, and is fixed to the light guide plate 44 to absorb the light guide plate 44, so that the display unit 40 without the frame 82 is provided. Can also be applied strongly.
- a round bar-shaped metal wire 100 may be used, and as shown in FIG. L-shaped angle material 102 may be used, pipe material 104 may be used as shown in FIG. 18, and C-shaped channel material may be used as shown in FIG. 106 may be used.
- metal wire 100 is used, the stiffness of the reinforcing beam 64 depends on the stiffness of the material, and if the angle material 102, the pipe material 104, or the chain material 106 is used, the material In addition to ⁇ ( ⁇ ), the shape is strengthened by the shape.
- the dry circuit IC 94 B which is a part of the control device, is installed on the chassis 84, and the dry circuit IC 94 B is controlled by the control IC 94. By installing it on the control board 92 together with A, etc., it may be configured to be within the range of the thickness (FIG. 9) of the light entrance surface 52 of the light guide 44.
- FIG. 20 schematically shows the appearance of, for example, a notebook personal computer (so-called notebook personal computer) as an information device according to the sixth embodiment.
- the notebook PC 110 is connected to the thin device main body 112 by a hinge portion 116 so as to be freely rotatable (arrow N) around a predetermined rotation axis 111 (arrow N). And a display housing 1 18.
- a so-called motherboard (not shown) is built into the housing of the main body of the device.
- the motherboard has a CPU (Central Processing Unit), memory, etc. as a processing unit that performs information processing. Has been implemented.
- the CPU performs arithmetic processing based on, for example, OS (operating system) or application software that is temporarily stored in a memory. this.
- OS operating system
- the user can use various input devices such as a keyboard 120 and a pointing device 122 mounted on the device main body 112 to input various data and commands.
- the display housing 118 includes a base 124 and a force bar 126 covering the base 124.
- the display unit 40 (Fig. 6) described above is installed between the cover 1 26 and the base 124 to display the information processing described above.
- Liquid crystal display (LCD) display The Dallafix® text is displayed and displayed on the display No. 42 screen based on the above-described CPU arithmetic processing.
- the cover 126 and the base 124 may be molded from a resin material such as polycarbonate, for example.
- the configuration of the display unit 40 built into the notebook computer 110 (FIGS. 6, 14, and 15) and the reinforcing structure of the light guide 44 (FIGS. 6 to 13)
- the material (Fig. 16 to Fig. 19) of the Neho strong beam 64 is as described above, and the details are omitted.
- the light guide plate 4 4 described above is By applying the reinforcement structure, the resistance to changes in the temperature and humidity in the operating environment is increased, realizing a highly reliable information device.
- the present invention has been described with respect to an information device including a device main body and a display housing.
- the information main body and the display housing are integrated.
- the present invention can also be implemented in equipment.
- the present invention can be implemented even when a power external light source that describes the present invention is used for a light source built in an information device.
- the display unit, the light guide plate, and the information device of the present invention have improved resistance to environmental temperature and humidity by reinforcing the light guide plate with a reinforcing member, and can be used in a severe environment.
- the compulsion structure is useful because it can be widely applied to reduce the thickness and weight.
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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- Light Guides In General And Applications Therefor (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2004/004027 WO2005093502A1 (ja) | 2004-03-24 | 2004-03-24 | 表示ユニット、導光板及び情報機器 |
TW093107987A TW200532311A (en) | 2004-03-24 | 2004-03-24 | Display unit, light guide plate and information apparatus |
JP2006511356A JP4457109B2 (ja) | 2004-03-24 | 2004-03-24 | 表示ユニット、導光板及び情報機器 |
US11/483,640 US7517102B2 (en) | 2004-03-24 | 2006-07-11 | Displaying unit, optical guide plate, and information device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/004027 WO2005093502A1 (ja) | 2004-03-24 | 2004-03-24 | 表示ユニット、導光板及び情報機器 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/483,640 Continuation US7517102B2 (en) | 2004-03-24 | 2006-07-11 | Displaying unit, optical guide plate, and information device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005093502A1 true WO2005093502A1 (ja) | 2005-10-06 |
Family
ID=35056339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/004027 WO2005093502A1 (ja) | 2004-03-24 | 2004-03-24 | 表示ユニット、導光板及び情報機器 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7517102B2 (ja) |
JP (1) | JP4457109B2 (ja) |
TW (1) | TW200532311A (ja) |
WO (1) | WO2005093502A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009224308A (ja) * | 2008-02-22 | 2009-10-01 | Ips Alpha Technology Ltd | 液晶表示装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0456822A (ja) * | 1990-06-22 | 1992-02-24 | Seiko Epson Corp | 液晶表示装置 |
JP2001216828A (ja) * | 2000-02-04 | 2001-08-10 | Seiko Epson Corp | 面光源ユニットならびにそれを備えた表示装置および電子機器 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2856276B2 (ja) | 1996-06-20 | 1999-02-10 | 日本電気株式会社 | バックライト装置 |
JP3054818B2 (ja) | 1998-07-03 | 2000-06-19 | ステップ有限会社 | ミシンのための糸通し装置 |
JP2000098377A (ja) | 1998-09-18 | 2000-04-07 | Mitsubishi Electric Corp | 液晶表示装置 |
JP2001035233A (ja) * | 1999-07-16 | 2001-02-09 | Nippon Denyo | 平面照明装置、液晶表示パネル、および液晶表示装置 |
TW569059B (en) * | 1999-12-09 | 2004-01-01 | Samsung Electronics Co Ltd | Liquid crystal display device |
JP2001338508A (ja) | 2000-03-24 | 2001-12-07 | Nec Corp | 背面光源およびそれを用いた表示装置 |
EP1136752A1 (en) * | 2000-03-24 | 2001-09-26 | Nec Corporation | Backlight unit and display device using the same backlight unit |
JP2003097061A (ja) | 2001-09-26 | 2003-04-03 | Toto Ltd | 視聴手段付浴室 |
JP4255333B2 (ja) * | 2002-09-25 | 2009-04-15 | シャープ株式会社 | バックライトユニットおよび液晶表示装置 |
-
2004
- 2004-03-24 TW TW093107987A patent/TW200532311A/zh not_active IP Right Cessation
- 2004-03-24 WO PCT/JP2004/004027 patent/WO2005093502A1/ja active Application Filing
- 2004-03-24 JP JP2006511356A patent/JP4457109B2/ja not_active Expired - Fee Related
-
2006
- 2006-07-11 US US11/483,640 patent/US7517102B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0456822A (ja) * | 1990-06-22 | 1992-02-24 | Seiko Epson Corp | 液晶表示装置 |
JP2001216828A (ja) * | 2000-02-04 | 2001-08-10 | Seiko Epson Corp | 面光源ユニットならびにそれを備えた表示装置および電子機器 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009224308A (ja) * | 2008-02-22 | 2009-10-01 | Ips Alpha Technology Ltd | 液晶表示装置 |
Also Published As
Publication number | Publication date |
---|---|
TW200532311A (en) | 2005-10-01 |
US20080007483A1 (en) | 2008-01-10 |
TWI316147B (ja) | 2009-10-21 |
US7517102B2 (en) | 2009-04-14 |
JPWO2005093502A1 (ja) | 2008-02-14 |
JP4457109B2 (ja) | 2010-04-28 |
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