WO2004092813A1 - Ensemble cadre de montage en plastique et element modulaire de retro-eclairage - Google Patents

Ensemble cadre de montage en plastique et element modulaire de retro-eclairage Download PDF

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Publication number
WO2004092813A1
WO2004092813A1 PCT/CN2003/000282 CN0300282W WO2004092813A1 WO 2004092813 A1 WO2004092813 A1 WO 2004092813A1 CN 0300282 W CN0300282 W CN 0300282W WO 2004092813 A1 WO2004092813 A1 WO 2004092813A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
fixed
plastic frame
backlight module
corner
Prior art date
Application number
PCT/CN2003/000282
Other languages
English (en)
Chinese (zh)
Inventor
Yi-Chun Ho
Original Assignee
Quanta Display Inc.
Quanta Display Japan Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Quanta Display Inc., Quanta Display Japan Inc. filed Critical Quanta Display Inc.
Priority to PCT/CN2003/000282 priority Critical patent/WO2004092813A1/fr
Priority to AU2003231467A priority patent/AU2003231467A1/en
Publication of WO2004092813A1 publication Critical patent/WO2004092813A1/fr

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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/007—Incandescent lamp or gas discharge lamp
    • G02B6/0071—Incandescent lamp or gas discharge lamp with elongated shape, e.g. tube
    • 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
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • 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
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • 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
    • 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
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of 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
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer

Definitions

  • the present invention relates to a fixed plastic frame group and a backlight module, and more particularly to a fixed plastic frame group which can effectively fix a power cord of a lamp tube to prevent solder joints from loosening, and to use the same.
  • Backlight module of frame group 2. Description of the Related Art
  • CRTs cathode ray tubes
  • FIG. 1 is a schematic structural diagram of a conventional backlight module.
  • the backlight module 100 includes a light guide panel (LGP) 110, a lamp 120, a reflector 130, an optical film 140, and an optical film 140.
  • LGP light guide panel
  • the light guide plate 110 has a light incident surface 112, a light diffusion surface 114, and a light exit surface 116.
  • the light tube 120 is disposed beside the light incident surface 112 of the light guide plate 110, and the light provided by the light tube 120 can be incident into the light guide plate 110 from the light incident surface 112 of the light guide plate 110 and pass through the light diffusion surface 114 of the light guide plate 110. After scattering and reflection, the light exits from the light exit surface 116 Shoot. It can be known from the above that the light guide plate 110 can convert the linear light emitted by the lamp tube 120 into a type of a surface light source, so as to ensure that the liquid crystal panel (not shown in the figure) obtains light with uniform brightness.
  • the reflecting cover 130 is disposed beside the lamp tube 120 and covers the lamp tube 120 to focus the light emitted by the lamp tube 120 toward the light incident surface 112 of the light guide plate 110.
  • the optical film 140 is disposed on the light exit surface 116 of the light guide plate 110 and is used to improve the brightness display of the backlight module 100.
  • the fixed plastic frame group 200 is mainly composed of an upper fixed frame 210 and a lower fixed frame 220.
  • the lower fixing plastic frame 210 is used to carry the light guide plate 110, the lamp tube 120, and the reflection cover 130, and the side wall 222 of the lower fixing plastic frame 220 has a plurality of bumps 224, and the upper fixing plastic frame 210 has a plurality of The fastening piece 212 corresponding to the above-mentioned protrusion 224, and the fastening piece 212 has an opening 214, and the opening 214 is adapted to be fastened to the above-mentioned protrusion 224, so that the upper fixing rubber frame 210 and the lower fixing rubber frame 220 Fixed to each other.
  • the upper fixed frame 210 has a window 216 for exposing the light exit surface 116 of the light guide plate 110, so that a surface light source emitted from the light exit surface 116 can illuminate a liquid crystal panel (above the upper fixed frame 210) ( Not shown). Therefore, it can be known from the foregoing that the light guide plate 110, the lamp tube 120, and the reflection cover 130 are fixed by the combination of the upper fixing rubber frame 210 and the lower fixing rubber frame 220, so that the backlight module 100 achieves the purpose of integration.
  • FIGS. 2A to 2B are schematic diagrams of a cable outlet of a conventional backlight module. Please refer to FIG. 2A and FIG. 2B collectively.
  • One end of the lamp tube 120 disposed in the lower fixed plastic frame 220 is usually connected to a power cord 122 by welding, and the power cord 122 is led out of the backlight module 100.
  • a bias voltage is coupled to the power line to drive the lamp tube 120 to emit light.
  • one side of the lower fixed rubber frame 220 is generally provided with a fixed rubber seat 226, and a cable management groove 228 is arranged on the fixed rubber seat 226, and a power cord 122 thereof is disposed at The cable management groove 228 is inside, and the end of the power cord 122 is exposed to the outside of the lower fixing rubber frame 220.
  • the upper fixing rubber frame 210 has a cover plate 218, and the cover plate 218 can be fastened to the fixing rubber seat 226 after the cover plate 218 is fastened to each other through the fastening piece 212 and the protrusion 224. It is worth noting that, because the well-known cable management slot 228 is a straight channel design, it is easy to derive the following disadvantages:
  • the cable management groove of the lower fixing rubber frame is a straight channel, the power cords arranged in this channel are easy to slide along the axis of the lamp tube, which causes the power cords to be displaced and the fixing effect is not good.
  • the object of the present invention is to provide a fixed plastic frame group and a backlight module, which can effectively fix the position of the power cord, so as to prevent the power cord from being affected by improper external force, which may cause the power cord to be displaced, the solder joints may be loosened or exposed, etc. phenomenon.
  • the invention proposes a fixed plastic frame, which is suitable for carrying at least one lamp tube, and one end of the lamp tube is connected to a power cord.
  • the fixed plastic frame group is mainly composed of a lower fixed plastic frame and an upper fixed plastic frame.
  • the lower fixed plastic frame has a corner cable management slot, and the power cable is arranged in the corner cable management slot, and the end of the power cable is exposed outside the lower fixed plastic frame, and the upper fixed plastic frame is arranged on the lower fixed plastic frame.
  • the present invention further provides a backlight module, which is mainly composed of a light guide plate, It is composed of at least one lamp tube and a fixed plastic frame group.
  • the light guide plate has at least one light incident surface, at least one light diffusion surface, and a light exit surface.
  • One end of the lamp tube is connected to a power line, and the lamp tube is arranged beside the light incidence surface.
  • the light provided by the lamp tube can The light incident surface enters the light guide plate, passes through the light diffusion surface, and is transmitted to the light exit surface for emission.
  • the fixing rubber group is mainly composed of a lower fixing rubber frame and an upper fixing rubber frame.
  • the lower fixed plastic frame has a corner cable management groove, the power cable is arranged in the corner cable management groove, and the end of the power cable is exposed outside the lower fixed plastic frame, and the upper fixed plastic frame is arranged on the lower fixed plastic frame.
  • the upper fixed plastic frame has a window for exposing the light exit surface of the light guide plate.
  • the lower fixed rubber frame has a fixed rubber base, and the corner cable management groove is located on the fixed rubber base, and the upper fixed rubber frame has a cover plate, and the cover plate is disposed on Fix the rubber seat.
  • the corner cable trough has one or more corners, such as a right angle, an acute angle, or an obtuse angle.
  • the corner cable management slot has a plurality of limiting bumps for limiting the displacement of the power cord.
  • the side wall of the lower fixing rubber frame further has a plurality of protrusions
  • the upper fixing rubber frame further has a plurality of fastening pieces corresponding to the protrusions.
  • Each has an opening, and the opening is adapted to be fastened on the bump, so that the upper fixing rubber frame and the lower fixing rubber frame are fixed to each other.
  • each convex block also has a guide slope for guiding the fastening piece to move on the convex piece, so that when the fastening piece is fastened, the opening on the fastening piece is easier to be fastened on the convex piece.
  • an optical film is further disposed on the light emitting surface of the light guide plate, so as to improve the brightness display of the backlight module.
  • a reflector is disposed beside the lamp tube, and the reflector covers the lamp tube, so as to focus the light emitted by the lamp tube toward the light incident surface of the light guide plate.
  • a reflection sheet is further arranged at the bottom of the light guide plate to enhance the light diffusion of the light guide plate. Surface reflection and diffusion effect, thereby improving the light utilization ratio of the backlight module.
  • the present invention adopts a corner cable trough with one or more corners
  • the power cable connected to the lamp tube is arranged in this corner cable trough.
  • the position of the power cable can be fixed by the corner design in the corner cable trough to avoid Slide of power cord.
  • the external force can be applied to this corner to prevent the welding point of the power cord and the lamp tube from being loosened, exposed or broken.
  • FIG. 1 is a schematic structural diagram showing a known backlight module
  • FIGS. 2A to 2B are schematic diagrams showing the outlet end of a known backlight module
  • FIG. 3 is a schematic diagram showing the structure of a backlight module according to a preferred embodiment of the present invention
  • 4A ⁇ 4B are schematic diagrams showing an output terminal of a backlight module according to a preferred embodiment of the present invention.
  • 5A to 5C are schematic diagrams showing a corner cable trunking according to another preferred embodiment of the present invention. detailed description
  • FIG. 3 is a schematic structural diagram of a backlight module according to a preferred embodiment of the present invention.
  • the backlight module 300 mainly includes a light guide plate 310, a lamp tube 320, a reflection cover 330, an optical film 340, a reflection sheet 350, and a fixed plastic frame group. 400 composition.
  • the light guide plate 310 has a light incident surface 312, a light diffusion surface 314, and a light exit surface 316, and the light diffusion surface 314 has a plurality of V-shaped notches or a plurality of pits (not shown in the figure). .
  • the lamp tube 320 is, for example, a cold cathode lamp tube (CCFL), which is arranged beside the light incident surface 312 of the light guide plate 310, and the light provided by the lamp tube 320 can be incident on the light guide plate 310 through the light incident surface 312 of the light guide plate 310 After being scattered and reflected by the light diffusion surface 314 of the light guide plate 310, the light is emitted from the light exit surface 316. Therefore, it can be seen from the above that the light guide plate 310 can convert the linear light emitted from the lamp tube 320 into a type of surface light source, so as to ensure that the liquid crystal panel (not shown in the figure) obtains uniformly bright light.
  • CCFL cold cathode lamp tube
  • the reflecting cover 330 is disposed beside the lamp tube 320 and covers the lamp tube 320 to focus the light emitted by the lamp tube 320 toward the light incident surface 312 of the light guide plate 310.
  • the optical film 340 is disposed on the light exit surface 316 of the light guide plate 310 and is used to improve the brightness display of the backlight module 300.
  • the reflection sheet 350 is disposed on the bottom of the light guide plate 310 to improve the reflection and diffusion effect of the light diffusion surface 314 of the light guide plate 310, and further improve the light utilization rate of the backlight module 300.
  • the fixed plastic frame group 400 is used to carry the light guide plate 310, the lamp tube 320, and the reflection cover 330, and is mainly composed of an upper fixed plastic frame 410 and a lower fixed plastic frame 420.
  • the side wall 422 of the lower fixing rubber frame 420 has a plurality of protrusions 424
  • the upper fixing rubber frame 410 has a plurality of fastening pieces 412 corresponding to the protrusions 424, and the fastening piece 412 has an opening 414.
  • the opening 414 is adapted to be fastened to the protrusion 424, so that the upper fixing rubber frame 410 and the lower fixing rubber frame 420 are fixed to each other, so as to achieve the purpose of tight fitting.
  • the bump 424 has a guiding inclined surface 424a, The guiding piece 412 is used to guide the movement of the engaging piece 412 on the guiding inclined surface 424a, so that when the engaging piece 412 is engaged, the opening 414 on the engaging piece 412 is more easily engaged with the protrusion 424.
  • the upper fixing frame 410 has a window 416 for exposing the light emitting surface 316 of the light guide plate 310, so that a surface light source emitted from the light emitting surface 316 can illuminate a liquid crystal panel (above the upper fixing frame 410). (Not shown in the figure) to provide the required light source for the LCD panel. Therefore, it can be known from the above that the combination of the upper fixing rubber frame 410 and the lower fixing rubber frame 420 fixes the above-mentioned light guide plate 310, lamp tube 320, and reflection cover 330, so that the backlight module 300 achieves the purpose of integration. .
  • FIG. 4A to 4B are schematic diagrams of the output terminals of a backlight module according to a preferred embodiment of the present invention.
  • one end of the lamp tube 320 disposed in the lower fixed plastic frame 420 is connected to a power line 322 by welding, for example, and the power line 322 is led out of the backlight module 300.
  • a bias voltage is coupled to the power line 322 to drive the lamp tube 320 to emit light.
  • one side of the lower fixing rubber frame 420 is provided with a fixing rubber seat 426, and a corner cable management groove 428 is arranged on the fixing rubber seat 426.
  • the power cable 322 is arranged in the corner cable management groove 428, and the power cable The end of 322 is exposed outside the lower fixing rubber frame 420.
  • the upper fixing rubber frame 410 has a cover plate 418 corresponding to the fixing rubber seat 426, and the cover plate 418 can be fastened to the fixing rubber seat 426 after the cover plate 418 is fastened to each other through the fastening piece 412 and the projection 424. on.
  • the corner cable management groove 428 has two corners (that is, the channel of the corner cable management groove 428 passes through two turns).
  • the two corners are, for example, right angles, and the power cord 322 thereof is disposed on the corner cable.
  • the design of the corner of the corner management wire groove 428 can be used to limit the movement of the power cord 322 along the axial direction of the lamp tube 320, thereby fixing the position of the power cord 322.
  • a plurality of limiting bumps 428a may be disposed in the corner cable management groove 428, and these limiting bumps 428a may push the power line 322, In order to further limit the displacement of the power line 322.
  • FIG. 5A to 5C show schematic diagrams of a corner cable trunking according to another preferred embodiment of the present invention.
  • the corner management slot 428 on the fixing rubber seat 426 is not limited to the two corners shown in FIG. 4A, and may be designed as a single corner (as shown in FIG. 5A) or three corners ( As shown in FIG. 5B), four corners (as shown in FIG. 5C), and multiple corners, and multiple line position bumps (not shown in the figure) can also be arranged in the corner management grooves 428.
  • corner management cable trough in this embodiment uses a right angle as an example, but it is not limited to the right angle type, and it can also be designed as an acute angle, an obtuse angle type, or other principles that can limit the displacement of the power cord. Wire trunking can also achieve the same fixing effect.
  • the fixed plastic frame assembly in this embodiment is used in a backlight module to carry a lamp tube, a reflector, and a light guide plate, and to fix the power cord of the lamp tube.
  • a backlight module to carry a lamp tube, a reflector, and a light guide plate, and to fix the power cord of the lamp tube.
  • the fixed plastic frame group of the invention is not limited to be applied to a backlight module.
  • the fixed plastic frame group of the present invention can also only be used to carry a light source module composed of one or more lamps, and can achieve the same power line of a fixed lamp. purpose. Industrial applicability
  • the corner cable management grooves of the lower fixed plastic frame are designed with one or more corners, the power cords arranged in this channel are not easy to slide along the axial direction of the lamp tube, and This leads to displacement of the power cord, and its fixing effect is good.
  • the corner cable trough of the lower fixed plastic frame is designed with one or more corners, when the power cord receives an improper external force, the external force directly acts on the corner, and It will not act on the welding point where the power cord and the lamp tube are connected. In this way, this welding point can be protected.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

La présente invention se rapporte à un ensemble cadre de montage en plastique qui est constitué sensiblement d'un cadre de montage supérieur et d'un cadre de montage inférieur, entre lesquels est disposée au moins une lampe linéaire, un côté de ladite lampe étant raccordé à un fil électrique. Le cadre de montage inférieur est doté d'une rainure d'angle permettant de loger le fil électrique de sorte qu'une extrémité de ce fil électrique soit exposé à l'extérieur du cadre de montage inférieur, et il est accouplé au cadre de montage supérieur. Grâce à la structure de rainure d'angle permettant de loger le fil électrique, celui-ci peut être positionné de manière efficace, ceci permettant d'empêcher le déplacement dudit fil ainsi que le détachement du point de soudure, etc.. La présente invention se rapporte également à un élément modulaire à rétro-éclairage qui est principalement constitué d'une plaque guide de lumière, d'une ou de plusieurs lampes linéaires et de l'ensemble cadre de montage plastique ci-dessus.
PCT/CN2003/000282 2003-04-17 2003-04-17 Ensemble cadre de montage en plastique et element modulaire de retro-eclairage WO2004092813A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2003/000282 WO2004092813A1 (fr) 2003-04-17 2003-04-17 Ensemble cadre de montage en plastique et element modulaire de retro-eclairage
AU2003231467A AU2003231467A1 (en) 2003-04-17 2003-04-17 Plastic mounting frame set and back-light modular

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2003/000282 WO2004092813A1 (fr) 2003-04-17 2003-04-17 Ensemble cadre de montage en plastique et element modulaire de retro-eclairage

Publications (1)

Publication Number Publication Date
WO2004092813A1 true WO2004092813A1 (fr) 2004-10-28

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Application Number Title Priority Date Filing Date
PCT/CN2003/000282 WO2004092813A1 (fr) 2003-04-17 2003-04-17 Ensemble cadre de montage en plastique et element modulaire de retro-eclairage

Country Status (2)

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AU (1) AU2003231467A1 (fr)
WO (1) WO2004092813A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5375005A (en) * 1991-09-10 1994-12-20 Sharp Kabushiki Kaisha Liquid crystal display device for effectively supporting liquid crystal plate and illuminating device
US5422751A (en) * 1992-10-14 1995-06-06 Apple Computer, Inc. Liquid crystal display assembly employing front bezel, frame holding liquid crystal cell attached to bezel, and light source and back plate attached to bezel
US6016175A (en) * 1997-01-28 2000-01-18 Lg Electronics Inc. Liquid crystal display
CN1396480A (zh) * 2001-07-11 2003-02-12 Lg.飞利浦Lcd有限公司 将用于背光组件的灯线装入液晶显示器模块中的结构

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5375005A (en) * 1991-09-10 1994-12-20 Sharp Kabushiki Kaisha Liquid crystal display device for effectively supporting liquid crystal plate and illuminating device
US5422751A (en) * 1992-10-14 1995-06-06 Apple Computer, Inc. Liquid crystal display assembly employing front bezel, frame holding liquid crystal cell attached to bezel, and light source and back plate attached to bezel
US6016175A (en) * 1997-01-28 2000-01-18 Lg Electronics Inc. Liquid crystal display
CN1396480A (zh) * 2001-07-11 2003-02-12 Lg.飞利浦Lcd有限公司 将用于背光组件的灯线装入液晶显示器模块中的结构

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AU2003231467A8 (en) 2004-11-04
AU2003231467A1 (en) 2004-11-04

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