WO2012142775A1 - 用于背光模块的固定机构及背光模块 - Google Patents

用于背光模块的固定机构及背光模块 Download PDF

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Publication number
WO2012142775A1
WO2012142775A1 PCT/CN2011/073457 CN2011073457W WO2012142775A1 WO 2012142775 A1 WO2012142775 A1 WO 2012142775A1 CN 2011073457 W CN2011073457 W CN 2011073457W WO 2012142775 A1 WO2012142775 A1 WO 2012142775A1
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WO
WIPO (PCT)
Prior art keywords
fixing
optical film
hole
backlight module
post
Prior art date
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Ceased
Application number
PCT/CN2011/073457
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English (en)
French (fr)
Inventor
李全
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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.)
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Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to DE112011105164.6T priority Critical patent/DE112011105164B4/de
Priority to US13/143,113 priority patent/US8388161B2/en
Publication of WO2012142775A1 publication Critical patent/WO2012142775A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • 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
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/46—Fixing elements

Definitions

  • the present invention relates to a fixing mechanism for a backlight module, and more particularly to a fixing mechanism and a backlight module for fixing an optical component of a backlight module.
  • LCD panel (LCD) Panel) is now widely used in electronic products with growth potential such as monitors, notebook computers and digital cameras. After the glass panel manufacturer produces the glass panel, it must first combine the color filter, the two are sealed and then poured into the liquid crystal, and then combined with the backlight module, the driver IC, the control circuit board and other components to form an LCD module for sale to downstream manufacturers. .
  • Backlight module Module is one of the key components of the liquid crystal display. Since the liquid crystal itself does not emit light, the function of the backlight module is to supply a sufficient light source with uniform brightness and uniformity to enable normal display of images.
  • the backlight module is mainly composed of a light source, a lamp cover, a reflector, and a light guide plate (Light). Guide plate), diffusion sheet, brightness enhancement (Brightness enhancement) The film and the frame are assembled.
  • the backlight module can be divided into a direct type and a side type according to the position of the light source.
  • FIG. 1 illustrates a partial cross-sectional view of a conventional side-lit backlight module.
  • the backlight module 90 includes a back plate 91 having a side wall 911, and the back plate 91 carries a light guide plate 92.
  • An optical film (set) 93 is disposed on the light guide plate 92, and another plastic frame 94 is wrapped around the outer edge of the back plate 91, and the optical film 93 and the light guide plate 92 are fixed to
  • the side-entry backlight module 90 is formed.
  • the main difference between the configuration of the direct-lit backlight module and the edge-lit backlight module is that the light guide plate 92 is not disposed on the back plate 91, and the backlight module of the direct type and the backlight module of the side-entry type are fixed on the optical film 93.
  • the organization is similar.
  • the optical film 93 is disposed in order to improve the brightness of the central portion of the backlight module 90 and the uniformity of the overall backlight, both in the direct type backlight module and the side-in type backlight module.
  • the substrate of the optical film 93 is mostly made of a smooth polyethylene terephthalate (PET) material, the friction coefficient between them is small, and if the fixing is not good, the jumping out is likely to occur. .
  • PET polyethylene terephthalate
  • the optical film 93 is fixed by attaching an adhesive tape, that is, the optical film 93 is attached to the side wall 911 of the light guide plate 92 or the back plate 91.
  • the tapes are prone to failure when tested in high temperature and high humidity environments, and the accuracy of this method is not good, and the labor cost is also high.
  • the invention provides a fixing mechanism and a backlight module for a backlight module, so as to solve the problem that the optical assembly is not well fixed.
  • a primary object of the present invention is to provide a fixing mechanism and a backlight module for a backlight module that can stably hold an optical component.
  • the present invention provides a fixing mechanism for a backlight module, the backlight module having a back plate and an optical component;
  • the fixing mechanism includes a plurality of fixing posts and a plurality of fixing pieces, the fixing piece is Each of the fixing pieces has a fixing hole;
  • the optical component is provided with a plurality of through holes, the through holes corresponding to the fixing column;
  • the fixing column is disposed on the back plate And inserting into the through hole of the optical component, the fixing hole of the fixing piece is engaged with the fixing post, and the fixing piece abuts on the optical component.
  • the upper end of the fixing post is provided with a first engaging portion
  • the fixing hole of the fixing piece is correspondingly provided with a second engaging portion
  • the second engaging portion is engaged with The first engaging portion
  • the first engaging portion of the fixing post is a groove; and the second engaging portion of the fixing hole of the fixing piece is a flange; or the fixing post
  • the one engaging portion is a flange; the second engaging portion of the fixing hole of the fixing piece is a groove.
  • the optical component is a combination of a light guide plate and an optical film, the optical film is disposed above the light guide plate; the fixing column is disposed outside the light guide plate, The through hole is formed in the optical film, and the fixing piece is abutted on the optical film.
  • the optical component is a light guide plate, and the through hole is opened on the light guide plate, and the fixing piece abuts against the light guide plate.
  • the optical component is an optical film
  • the fixing pillar has a shape in which the upper portion is thinner than the lower portion, and a bearing portion is formed to carry the optical film, the optical film.
  • the through hole is opened in the upper portion, and the fixing piece abuts against the optical film.
  • the fixing post has an outer shape that is thinner than the lower portion, and a bearing portion is formed to carry the optical film, and the through hole is opened in the optical film.
  • a fixing sheet is attached to the optical film.
  • the fixing post is fixed to the backing plate by riveting, welding or snapping.
  • the present invention further provides a fixing mechanism for a backlight module, the backlight module having a back plate and an optical component, the fixing mechanism comprising a plurality of fixing posts, wherein an upper end is provided with an annular groove, The portion of the fixing post on the upper side of the annular groove is an elastic material;
  • the optical component comprises an optical film, the optical film has a plurality of fixing holes, each of the fixing holes is formed by a first circular hole and a first hole Forming a second circular hole portion having a diameter slightly larger than a diameter of the fixing post, the second circular hole having a diameter slightly larger than or equal to a diameter of the annular groove bottom of the fixing post;
  • the fixing post is disposed on the back plate, and the second circular hole of the fixing hole of the optical die is engaged on the annular groove of the fixing post.
  • the fixing post is fixed to the backing plate by riveting, welding or snapping.
  • the fixing mechanism further includes a light guide plate, the light guide plate is provided with a plurality of through holes, the through hole corresponding to the fixing column, and the fixing column penetrates the light guide plate a through hole, and the surface of the optical film abuts against the surface of the light guide plate.
  • the present invention further provides a backlight module, the backlight module comprising a backboard, an optical component and a plurality of fixing mechanisms, the fixing mechanism comprising a plurality of fixing posts, the fixing pillars being fixed on the backboard
  • the optical component has a plurality of through holes, the fixing sleeves fit into the through holes, and the fixing mechanism abuts against the optical component.
  • the fixing mechanism further includes a plurality of fixing pieces, the fixing piece is made of an elastic material, each of the fixing pieces has a fixing hole; and the optical component is provided with a plurality of a through hole corresponding to the fixing post; the fixing post is disposed on the back plate and fits into the through hole of the optical component, and the fixing hole of the fixing piece is engaged with the fixing post And the fixing piece abuts against the optical component.
  • the upper end of the fixing post is provided with a first engaging portion
  • the fixing hole of the fixing piece is correspondingly provided with a second engaging portion
  • the second engaging portion is engaged with The first engaging portion
  • the first engaging portion of the fixing post is a groove
  • the second engaging portion of the fixing hole of the fixing piece is a flange
  • the first engaging portion of the fixing post is a flange; and the second engaging portion of the fixing hole of the fixing piece is a groove.
  • the fixing post has an outer shape that is thinner than the lower portion, and a bearing portion is formed to carry the optical film, and the through hole is opened in the optical film.
  • a fixing sheet is attached to the optical film.
  • the fixing post is fixed to the backing plate by riveting, welding or snapping.
  • an upper end of the fixing post is provided with an annular groove, and a portion of the fixing post on the upper side of the annular groove is an elastic material;
  • the optical component includes an optical film, the optical film
  • the sheet has a plurality of fixing holes, each of the fixing holes being formed by intersecting a first circular hole and a second circular hole portion, the diameter of the first circular hole being slightly larger than the diameter of the fixing column, the first The diameter of the two circular holes is approximately equal to the diameter of the annular groove bottom of the fixing column; the fixing column is disposed on the back plate, and the second circular hole of the fixing hole of the optical film is engaged with the fixing On the annular groove of the column.
  • the optical component further includes a light guide plate, and the light guide plate defines a plurality of through holes, wherein the through hole corresponds to the fixing column, and the fixing column penetrates through the light guide plate a hole, and the surface of the optical film abuts against a surface of the light guide plate.
  • the optical component is positioned in the through hole of the optical component through the fixing post to position the optical component, and the fixing structure is made of an elastic material. Therefore, the fixing mechanism can stably fix the optical film so as not to cause a gap, and the optical film is not disengaged due to the influence of thermal expansion and contraction. Moreover, the optical film is easy to install and saves material.
  • the optical component is positioned in the through hole of the optical component through the fixing post to position the optical component, and the fixing structure is made of an elastic material. Therefore, the fixing mechanism can stably fix the optical film so as not to cause a gap, and the optical film is not disengaged due to the influence of thermal expansion and contraction. Moreover, the optical film is easy to install and saves material.
  • Figure 1 A partial cross-sectional view of a prior art side-lit backlight module.
  • Figure 2 is a partial cross-sectional view showing a first embodiment of the backlight module of the present invention.
  • FIG 3 is an exploded perspective view showing a fixing post and a fixing piece of the first embodiment of the backlight module of the present invention.
  • Figure 4 is a partial cross-sectional view showing a second embodiment of the backlight module of the present invention.
  • Fig. 5 is an exploded perspective view showing the fixing post and the fixing piece of the second embodiment of the backlight module of the present invention.
  • Figure 6 is a partial cross-sectional view showing a third embodiment of the backlight module of the present invention.
  • Figure 7 is a partial cross-sectional view showing a fourth embodiment of the backlight module of the present invention.
  • Figure 8 is a partial perspective view of an optical film of a fourth embodiment of the backlight module of the present invention.
  • FIG. 2 is a partial cross-sectional view showing a first embodiment of a backlight module of the present invention.
  • the backlight module 10 includes a back plate 11, an optical component, and a fixing mechanism of the optical component.
  • the optical component is a light guide plate or a combination of a light guide plate and an optical film.
  • the optical component includes a light guide plate 12 and an optical film 13 .
  • the light guide plate 12 is disposed on the back plate 11.
  • the optical film 13 is disposed on the light guide plate 12.
  • the optical film 13 may be a layer, a group or a plurality of layers.
  • the optical film 13 is collectively referred to.
  • the fixing mechanism of the optical component includes a plurality of fixing posts 14 and a plurality of fixing pieces 15 .
  • FIG. 3 is an exploded perspective view of the fixing post 14 and the fixing piece 15 of FIG. 2, wherein the fixing piece 15 is shown in a cross-sectional view.
  • the optical film 13 is provided with a plurality of through holes 131. Each of the through holes 131 corresponds to a fixing post 14 .
  • the fixing post 14 passes through the through hole 131 of the optical film 13 to position the optical film. 13.
  • the fixing piece 15 has a fixing hole 151.
  • the fixing hole 151 of the fixing piece 15 is engaged with the upper end of the fixing post 14 to fix the fixing piece 15, and the lower surface of the fixing piece 15 is closely attached to the fixing piece 15
  • the upper surface of the optical film 13 is described to fix the optical film 13.
  • the optical film 13 is superposed on the light guide plate 12.
  • the fixing column 14 preferably has an outer shape which is thinner than the lower portion, and a bearing portion 141 is formed to carry the optical film 13
  • the height of the lower portion of the fixing post 14 is substantially equal to the height of the light guide plate 12.
  • a first engaging portion 142 is disposed at the upper end of the fixing post 14
  • a second engaging portion 152 is disposed in the fixing hole 151 of the fixing piece 15 corresponding to the first engaging portion 142 .
  • the engaging portion 152 is engaged in the first engaging portion 142.
  • the first engaging portion 142 of the fixing post 14 is a groove
  • the second engaging portion 152 of the fixing piece 15 is a flange
  • the fixing piece 15 is preferably made of an elastic material.
  • the second engaging portion 152 of the fixing piece 15 can be inserted into the first engaging portion 142 of the fixing post 14 by elastic elasticity of the material.
  • the light guide plate 12 is disposed on the back plate 11 , and the plurality of fixing posts 14 are located outside the light guide plate 12 , and the fixing posts 14 are nested in the through holes 131 of the optical film 13 .
  • the optical film 13 is positioned, the second engaging portion 152 of the fixing piece 15 is engaged in the first engaging portion 142 of the fixing post 14, and the lower surface of the fixing piece 15 is abutted.
  • the optical film 13 and the light guide plate 12 are fixed to the upper surface of the optical film 13. Since the fixing piece 15 is preferably made of an elastic material, the fixing piece 15 can stably fix the optical film 13 so that it does not cause a gap in the vertical direction, nor is it caused by thermal expansion and contraction.
  • the optical film 13 is disengaged from the influence.
  • the present invention is easy to install and save material by fixing the optical film 13 with the fixing post 14 and the fixing piece 15.
  • the fixing post 14 of the first embodiment of the present invention is preferably a metal post and is fixed to the backing plate 11 by riveting.
  • the present invention is not limited thereto, and the fixing post 14 may also be made of other materials, such as engineering plastics; the fixing post 14 may also be fixed to the backboard 11 by other fixing means. For example soldering or snapping.
  • the through hole 131 of the optical film 13 is a circular hole.
  • the present invention is not limited thereto, and the through hole 131 may be provided in other shapes or in an open shape depending on the use requirements.
  • the present invention can also be applied to a direct type backlight module.
  • the main difference between the direct type backlight module and the side entry type backlight module is that the light guide plate 12 is not disposed on the back plate 11 but is set. A direct light source.
  • the fixed configuration of the optical film 13 can be the same. Therefore, the fixing mechanism of the present invention can be applied to both the direct type backlight module and the side entry type backlight module.
  • the fixing post 14 passes through the carrying portion 141 to carry the optical film 13.
  • FIG. 4 is a partial cross-sectional view of a second embodiment of the backlight module of the present invention
  • FIG. 5 is an exploded perspective view of the fixing post and the fixing piece of FIG. 4, wherein the fixing piece 25 is cutaway The way to express it.
  • the backlight module 20 of the second embodiment of the present invention is substantially the same as the backlight module 10 of the first embodiment of the present invention, but the difference is that, in the embodiment, the fixing post 24 of the backlight module 20 is The one engaging portion 242 is a flange; the second engaging portion 252 of the fixing hole 251 of the fixing piece 25 is a groove.
  • the fixing post 24 passes through the through hole 231 of the optical film 23 to position the optical film 23 , and the second engaging portion 252 of the fixing piece 25 is engaged with the first engaging portion 242 of the fixing post 24 , and The lower surface of the fixing piece 25 abuts against the upper surface of the optical film 23 to fix the optical film 23.
  • the fixing piece 25 of the embodiment can be designed into irregular or symmetrical other non-circular shapes, such as a rectangular shape or a long oval shape, according to the use requirements. Therefore, when the fixing piece 25 is engaged with the fixing post 24, the contact area of the fixing piece 25 against the optical film 23 is increased to increase the effect of fixing the optical film 23.
  • FIG. 6 is a partial cross-sectional view showing a backlight module according to a third embodiment of the present invention.
  • the backlight module 30 of the third embodiment of the present invention is substantially the same as the backlight module 10 of the first embodiment of the present invention, but the difference is that in the embodiment, the optical component is a light guide plate 32.
  • the light guide plate 32 is provided with a plurality of through holes 321 , and each of the through holes 321 corresponds to the plurality of fixing posts 34 .
  • the light guide plate 32 is inserted into the fixing post 34 through the through hole 321 , and the fixing piece 35 is engaged with the upper end of the fixing post 34 through the fixing hole 351 , and the fixing piece 35 is abutted.
  • the light guide plate 32 is fixed to the upper surface of the light guide plate 32.
  • FIG. 7 is a partial cross-sectional view showing a backlight module according to a fourth embodiment of the present invention
  • FIG. 8 is a partial perspective view showing the optical film according to the fourth embodiment of the present invention.
  • the backlight module 40 of the fourth embodiment of the present invention is substantially the same as the backlight module 30 of the third embodiment of the present invention, but the difference is that, in the embodiment, the optical component includes a light guide plate 42 and an optical film 43.
  • the fixing mechanism includes a plurality of fixing posts 44.
  • the upper end of the fixing post 44 is provided with an annular groove 442.
  • the portion of the fixing post 44 on the upper side of the annular groove 442 is made of an elastic material, and the optical film 43 has a plurality of fixing holes 431.
  • the fixing hole 431 is formed by intersecting a first circular hole 431a having a diameter slightly larger than a diameter of the fixing post 44, and a second circular hole 431b having a diameter smaller than a diameter of the second circular hole 431b. Slightly greater than or equal to the diameter of the annular groove bottom 442 of the fixed post 44.
  • a plurality of through holes 421 are defined in the light guide plate 42 .
  • the through holes 421 correspond to the fixing posts 44 , and the fixing posts 44 are inserted into the through holes 441 of the light guide plate 42 .
  • the fixing post 44 penetrates into the optical film 43 through the first circular hole 431a of the fixing hole 431, and moves to the position of the annular groove 442 of the fixing post 44.
  • the optical film The sheet 43 is abutted against the light guide plate 42. Then, the optical film 43 is moved so that the second circular hole 431b of the optical film 43 is caught in the annular groove 442 of the fixing post 44, so that the optical film 43 and the light guide plate 42 can be fixed.
  • the present invention is not limited thereto.
  • the fixing mechanism is used to simply fix the optical film 43 on the fixing post 44. .
  • the fixing mechanism for the backlight module of the present invention mainly includes a plurality of fixing posts and a plurality of fixing pieces, and the plurality of fixing posts are disposed on the backing plate.
  • the optical component is fixed by engaging the fixing piece to an upper end of the fixing post and abutting the fixing piece against an optical component. Since the fixing mechanism adopts an elastic material, the fixing mechanism can stably fix the optical component so as not to cause a gap, and the optical component is not disengaged due to the influence of thermal expansion and contraction. And make installation easy and save materials.

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

Description

用于背光模块的固定机构及背光模块 技术领域
本发明涉及一种用于背光模块的固定机构，特别是涉及一种固定背光模块的光学组件的固定机构及背光模块。
 背景技术
液晶显示器面板(LCD panel)现已广泛应用于监视器、笔记本电脑及数码相机等具成长潜力的电子产品。LCD面板制造商在产生玻璃面板之后，须先结合彩色滤光片，两者封合后灌入液晶，再与背光模块、驱动IC、控制电路板等组件共同组合成LCD模块出售给下游制造商。
背光模块(Back light module)为液晶显示器的关键零组件之一，由于液晶本身不发光，背光模块的功能即在于供应充足的亮度与分布均匀的光源，使其能正常显示影像。背光模块主要由光源、灯罩、反射板(Reflector)、导光板(Light guide plate)、扩散片(Diffusion sheet)、增亮膜(Brightness enhancement film)及外框等组件组装而成。
一般而言，背光模块依光源位置可分为直下式及侧入式两种。请参照图1，其揭示一种现有侧入式的背光模块的局部剖视图。背光模块90包含一背板91，所述背板91具有侧壁911，并且所述背板91承载一导光板92。所述导光板92上设有一光学膜片(组)93，并另有一胶框94包覆于所述背板91的外缘，且固定所述光学膜片93及所述导光板92，以形成所述侧入式背光模块90。
直下式背光模块的构造与侧入式背光模块主要区别在于所述背板91上没有设置所述导光板92，直下式的背光模块与侧入式的背光模块在所述光学膜片93的固定机构上都是相似的。不论是在直下式的背光模块与侧入式的背光模块中，所述光学膜片93的设置都是为了提高背光模块90中心部位的亮度及整体背光的均匀度。然而，由于所述光学膜片93的基材大多为光滑的聚对苯二甲酸乙二醇酯（PET）材质，其彼此间的摩擦系数较小，若固定不佳，则容易发生跳出的情形。目前常见的做法是采用如图1中的胶框94来压住所述光学膜片93，但由于设计时塑胶材质与PET材质热胀冷缩的因素，故经常产生间隙，导致对于所述光学膜片93的固定效果不佳的情形。
另外，由于要配合液晶显示器窄边框的设计，所述胶框94压住所述光学膜片93的面积也必须随着缩小。因此，以所述胶框94固定所述光学膜片93的固定效果更差。此外，背光模块中也会采用贴附胶带的方式来固定所述光学膜片93，即将光学膜片93贴附于导光板92或背板91的侧壁911上。但由于大部分的胶带在高温、高湿环境测试时容易失效，并且此方式的精准度不佳，人工成本也较高。
因此，有必要提供一种用于背光模块的固定机构及背光模块，以解决现有技术所存在的问题。
 技术问题
本发明提供一种用于背光模块的固定机构及背光模块，以解决光学组片固定效果不佳的问题。
 技术解决方案
本发明的主要目的是提供一种能稳定的固定住光学组件的用于背光模块的固定机构及背光模块。
为达上述目的，本发明提供一种用于背光模块的固定机构，所述背光模块具有一背板及光学组件；所述固定机构包含多个固定柱及多个固定片，所述固定片由弹性材质所制成，每一所述固定片具有一固定孔；所述光学组件上开设有多个贯穿孔，所述贯穿孔对应所述固定柱；所述固定柱设置于所述背板上，并套入所述光学组件的贯穿孔，所述固定片的固定孔卡合在所述固定柱上，并且所述固定片抵贴在所述光学组件上。
在本发明的一实施例中，所述固定柱的上端设有一第一卡合部，所述固定片的固定孔内对应设有第二卡合部，所述第二卡合部卡合于所述第一卡合部。
在本发明的一实施例中，所述固定柱的第一卡合部是一凹槽；及所述固定片的固定孔的第二卡合部是一凸缘；或者所述固定柱的第一卡合部是一凸缘；所述固定片的固定孔的第二卡合部是一凹槽。
在本发明的一实施例中，所述光学组件为导光板与光学膜片的组合，所述光学膜片设置在所述导光板的上方；所述固定柱设置在导光板的外侧，所述光学膜片上开设所述贯穿孔，所述固定片抵贴在所述光学膜片上。
在本发明的一实施例中，所述光学组件为导光板，所述导光板上开设所述贯穿孔，所述固定片抵贴在所述导光板上。
在本发明的一实施例中，所述光学组件为光学膜片，所述固定柱为上部分比下部分细的外型，形成一承载部以承载所述光学膜片，所述光学膜片上开设所述贯穿孔，所述固定片抵贴在所述光学膜片上。
在本发明的一实施例中，所述固定柱为上部分比下部分细的外型，形成一承载部以承载所述光学膜片，所述光学膜片上开设所述贯穿孔，所述固定片抵贴在所述光学膜片上。
在本发明的一实施例中，所述固定柱以铆接、焊接或卡接的方式固定在背板上。
为达上述目的，本发明另提供一种用于背光模块的固定机构，所述背光模块具有背板及光学组件，所述固定机构包含多个固定柱，其上端设有一环状槽，所述固定柱位于所述环状槽上侧的部分为弹性材质；所述光学组件包括光学膜片，该光学膜片具有多个固定孔，每一所述固定孔由一第一圆孔及一第二圆孔部分相交所形成，所述第一圆孔的直径略大于所述固定柱的直径，所述第二圆孔的直径略大于或等于所述固定柱的环状槽底的直径；所述固定柱设置于所述背板上，所述光学模片的固定孔的第二圆孔卡合在所述固定柱的环状槽上。
在本发明的一实施例中，所述固定柱以铆接、焊接或卡接的方式固定在背板上。
在本发明的一实施例中，所述固定机构另包含一导光板，所述导光板上开设有多个贯穿孔，所述贯穿孔对应所述固定柱，所述固定柱贯穿所述导光板的贯穿孔，并且所述光学膜片表面抵贴于所述导光板的表面。
为达上述目的，本发明另提供一种背光模块，所述背光模块包含一背板、光学组件及多个固定机构，所述固定机构包含多个固定柱，所述固定柱固定在背板上；所述光学组件具有多个贯穿孔，所述固定住套入所述贯穿孔，并且所述固定机构抵贴在所述光学组件上。
在本发明的一实施例中，所述固定机构还包括多个固定片，该固定片由弹性材质所制成，每一所述固定片具有一固定孔；所述光学组件上开设有多个贯穿孔，所述贯穿孔对应所述固定柱；所述固定柱设置于所述背板上，并套入所述光学组件的贯穿孔，所述固定片的固定孔卡合在所述固定柱上，并且所述固定片抵贴在所述光学组件上。
在本发明的一实施例中，所述固定柱的上端设有一第一卡合部，所述固定片的固定孔内对应设有第二卡合部，所述第二卡合部卡合于所述第一卡合部。
在本发明的一实施例中，所述固定柱的第一卡合部是一凹槽，所述固定片的固定孔的第二卡合部是一凸缘。
在本发明的一实施例中，所述固定柱的第一卡合部是一凸缘；所述固定片的固定孔的第二卡合部是一凹槽。
在本发明的一实施例中，所述固定柱为上部分比下部分细的外型，形成一承载部以承载所述光学膜片，所述光学膜片上开设所述贯穿孔，所述固定片抵贴在所述光学膜片上。
在本发明的一实施例中，所述固定柱以铆接、焊接或卡接的方式固定在背板上。
在本发明的一实施例中，所述固定柱上端设有一环状槽，所述固定柱位于所述环状槽上侧的部分为弹性材质；所述光学组件包括光学膜片，该光学膜片具有多个固定孔，每一所述固定孔由一第一圆孔及一第二圆孔部分相交所形成，所述第一圆孔的直径略大于所述固定柱的直径，所述第二圆孔的直径约等于所述固定柱的环状槽底的直径；所述固定柱设置于所述背板上，所述光学膜片的固定孔的第二圆孔卡合在所述固定柱的环状槽上。
在本发明的一实施例中，所述光学组件还包括导光板，该导光板上开设有多个贯穿孔，所述贯穿孔对应所述固定柱，所述固定柱贯穿所述导光板的贯穿孔，并且所述光学膜片表面抵贴于所述导光板的表面。
在本发明的用于背光模块的固定机构及背光模块中，所述光学组件通过所述固定柱套入光学组件的贯穿孔而定位光学组件，并且所述固定结构部分由弹性材质所制成，因此，所述固定机构除了能稳定的固定住所述光学膜片，使其不致产生间隙，也不因热胀冷缩的影响而使所述光学膜片脱离定位。并且使所述光学膜片的安装容易及节省材料。
 有益效果
在本发明的用于背光模块的固定机构及背光模块中，所述光学组件通过所述固定柱套入光学组件的贯穿孔而定位光学组件，并且所述固定结构部分由弹性材质所制成，因此，所述固定机构除了能稳定的固定住所述光学膜片，使其不致产生间隙，也不因热胀冷缩的影响而使所述光学膜片脱离定位。并且使所述光学膜片的安装容易及节省材料。
附图说明
图1：现有一种侧入式背光模块的局部剖视图。
图2：本发明背光模块的第一实施例的局部剖视图。
图3：本发明背光模块的第一实施例的固定柱及固定片的立体分解图。
图4：本发明背光模块的第二实施例的局部剖视图。
图5：本发明背光模块的第二实施例的固定柱及固定片的立体分解图。
图6：本发明背光模块的第三实施例的局部剖视图。
图7：本发明背光模块的第四实施例的局部剖视图。
图8：本发明背光模块的第四实施例的光学膜片的局部立体图。
 本发明的最佳实施方式
为让本发明上述目的、特征及优点更明显易懂，下文特举本发明较佳实施例，并配合附图，作详细说明如下：
请参照图2，图2是本发明背光模块的第一实施例的局部剖视图。所述背光模块10包含一背板11、一光学组件及光学组件的固定机构。在本发明的各实施例中，所述光学组件为一导光板或导光板与光学膜片的组合，而在本实施例中，所述光学组件包括导光板12及光学膜片13。所述导光板12设于所述背板11上，所述光学膜片13设于所述导光板12上，所述光学膜片13可能是一层、一组或多层的结构，在本发明中统称为光学膜片13。所述光学组件的固定机构包含多个固定柱14及多个固定片15。
请同时参照图2及图3，图3是图2的固定柱14及固定片15的立体分解图，其中所述固定片15以剖视的方式来表示。所述光学膜片13上设有多个贯穿孔131，每一所述贯穿孔131对应一个固定柱14，所述固定柱14穿过所述光学膜片13的贯穿孔131而定位光学膜片13。所述固定片15具有一固定孔151，所述固定片15的固定孔151卡合于所述固定柱14的上端以固定该固定片15，并且所述固定片15的下表面紧贴在所述光学膜片13的上表面以固定所述光学膜片13。
所述光学膜片13叠置于所述导光板12之上，所述固定柱14优选的是具有一上部分比下部分细的外型，形成一承载部141以承载所述光学膜片13，所述固定柱14的下部分高度大致与所述导光板12的高度相等。另外，所述固定柱14的上端设有一第一卡合部142，并且所述固定片15的固定孔151内对应该第一卡合部142设有一第二卡合部152，所述第二卡合部152卡合在所述第一卡合部142内。优选的是，所述固定柱14的第一卡合部142是一凹槽，所述固定片15的第二卡合部152是一凸缘，并且所述固定片15优选是由弹性材质所制成，例如硅胶或橡胶材质，因此所述固定片15的第二卡合部152能通过材质的弹性卡入所述固定柱14的第一卡合部142。
所述导光板12置于所述背板11上，并且所述多个固定柱14是位于所述导光板12的外侧，所述固定柱14套入所述光学膜片13的贯穿孔131中而使所述光学膜片13定位，所述固定片15的第二卡合部152卡合于所述固定柱14的第一卡合部142内，并且所述固定片15的下表面抵贴于所述光学膜片13的上表面以固定住所述光学膜片13及导光板12。由于，所述固定片15优选由弹性材质所制成，因此，所述固定片15能稳定的固定住所述光学膜片13，使其在竖直方向不致产生间隙，也不因热胀冷缩的影响而使所述光学膜片13脱离定位。并且相较于现有以胶框固定光学膜片的方式，本发明以所述固定柱14及所述固定片15固定所述光学膜片13的方式，安装容易并节省材料。
此外，本发明的第一实施例的所述固定柱14优选是一金属柱并以铆接的方式固定于所述背板11上。但本发明并不限于此，所述固定柱14也可选择以其他的材质来制作，例如工程塑胶；所述固定柱14也可选择以其他的固定方式来固定于所述背板11上，例如焊接或卡接。
另外，在本发明的第一实施例中，所述光学膜片13的贯穿孔131是一圆孔。但本发明并不限于此，所述贯穿孔131也可依使用需求设置成其他的形状或呈开口状。
虽然本发明的第一实施例是以一种侧入式的背光模块来进行说明。然而，本发明同样能应用于直下式的背光模块，直下式的背光模块与侧入式的背光模块的主要区别在于，在所述背板11上并没有设置所述导光板12，而是设置了直下式的光源。除此之外，在所述光学膜片13的固定的构造上可以是相同的。因此，本发明所述固定机构可同时适用于直下式的背光模块及侧入式的背光模块。但在应用于直下式的背光模块时，由于所述光学膜片13没有所述导光板12可支撑，因此所述固定柱14是通过所述承载部141以承载所述光学膜片13。
请参照图4及图5，图4为本发明背光模块的第二实施例的局部剖视图；图5为图4中的固定柱及固定片的立体分解图，其中所述固定片25以剖视的方式来表示。本发明第二实施例的背光模块20与本发明第一实施例的背光模块10大致相同，但其不同之处在于：在本实施例中，所述背光模块20的所述固定柱24的第一卡合部242是一凸缘；所述固定片25的固定孔251的第二卡合部252是一凹槽。所述固定柱24穿过光学膜片23的贯穿孔231以定位光学膜片23，所述固定片25第二卡合部252卡合于所述固定柱24的第一卡合部242，并且所述固定片25的下表面抵贴于所述光学膜片23的上表面以固定住所述光学膜片23。
再者，本实施例的所述固定片25可以依使用需求设计成不规则的或对称的其他非圆形的形状，例如长方形或长椭圆形。因此，当所述固定片25与所述固定柱24卡合后，所述固定片25抵压所述光学膜片23的接触面积增大，以增加固定住所述光学膜片23的效果。
请参照图6，图6揭示本发明第三实施例的一种背光模块的局部剖视图。本发明第三实施例的背光模块30与本发明第一实施例的背光模块10大致相同，但其不同之处在于：在本实施例中，所述光学组件为一导光板32，在本实施例中，所述导光板32设有多个贯穿孔321，每一所述贯穿孔321对应所述多个固定柱34。所述导光板32通过所述贯穿孔321穿入所述固定柱34而定位，所述固定片35通过所述固定孔351卡合于所述固定柱34的上端，并且所述固定片35抵贴于所述导光板32的上表面以固定所述导光板32。
请再参照图7及图8，图7揭示本发明第四实施例的一种背光模块的局部剖视图；图8揭示本发明第四实施例的光学膜片的局部立体图。本发明第四实施例的背光模块40与本发明第三实施例的背光模块30大致相同，但其不同之处在于：在实施例中，所述光学组件包括一导光板42及光学膜片43，所述固定机构包含多个固定柱44。所述固定柱44上端设有一环状槽442，该固定柱44位于所述环形槽442上侧的部分为弹性材质制成，并且所述光学膜片43具有多个固定孔431，每一所述固定孔431由一第一圆孔431a及一第二圆孔431b相交所形成，所述第一圆孔431a的直径略大于所述固定柱44的直径，所述第二圆孔431b的直径略大于或等于所述固定柱44的环状槽底442的直径。所述导光板42上开设有多个贯穿孔421，所述贯穿孔421对应所述固定柱44，所述固定柱44套入所述导光板42的贯穿孔441。所述固定柱44通过所述固定孔431的第一圆孔431a穿入所述光学膜片43中，并移至所述固定柱44的环状槽442的位置，此时，所述光学膜片43抵贴于所述导光板42上。然后，移动所述光学膜片43，使所述光学膜片43的第二圆孔431b卡入所述固定柱44的环状槽442，因此能固定所述光学膜片43及导光板42。然而，本发明不限于此，在直下式的背光模块的使用情况中，由于不具有所述导光板42，因此所述固定机构用以单纯固定所述光学膜片43于所述固定柱44上。
综上所述，相较于现有的背光模块中，本发明的用于背光模块的固定机构主要包含多个固定柱及多个固定片，所述多个固定柱设置于背板上。通过将所述固定片卡合于所述固定柱的上端，并且将所述固定片抵贴于光学组件以固定所述光学组件。由于，所述固定机构中采用弹性材质，因此，所述固定机构除了能稳定的固定住所述光学组件，使其不致产生间隙，也不因热胀冷缩的影响而使所述光学组件脱离定位，并且使安装容易及节省材料。
本发明已由上述相关实施例加以描述，然而上述实施例仅为实施本发明的范例。必需指出的是，已公开的实施例并未限制本发明的范围。相反地，包含于权利要求书的精神及范围的修改及均等设置均包括于本发明的范围内。
 本发明的实施方式
工业实用性
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Claims (19)

  1. 一种用于背光模块的固定机构，所述背光模块具有一背板及光学组件；其特征在于：所述固定机构包含多个固定柱及多个固定片，所述固定片由弹性材质所制成，每一所述固定片具有一固定孔；
    所述光学组件上开设有多个贯穿孔，所述贯穿孔对应所述固定柱；
    所述固定柱设置于所述背板上，并套入所述光学组件的贯穿孔，所述固定片的固定孔卡合在所述固定柱上，并且所述固定片抵贴在所述光学组件上。
  2. 如权利要求1所述固定机构，其特征在于：所述固定柱的上端设有一第一卡合部，所述固定片的固定孔内对应设有第二卡合部，所述第二卡合部卡合于所述第一卡合部。
  3. 如权利要求2所述固定机构，其特征在于：所述固定柱的第一卡合部是一凹槽，所述固定片的固定孔的第二卡合部是一凸缘；或者所述固定柱的第一卡合部是一凸缘，所述固定片的固定孔的第二卡合部是一凹槽。
  4. 如权利要求1所述固定机构，其特征在于：所述光学组件为导光板与光学膜片的组合，所述光学膜片设置在所述导光板的上方；所述固定柱设置在导光板的外侧，所述光学膜片上开设所述贯穿孔，所述固定片抵贴在所述光学膜片上。
  5. 如权利要求1所述的固定机构，其特征在于：所述光学组件为导光板，所述导光板上开设所述贯穿孔，所述固定片抵贴在所述导光板上。
  6. 如权利要求1所述的固定机构，其特征在于：所述固定柱为上部分比下部分细的外型，形成一承载部以承载所述光学膜片，所述光学膜片上开设所述贯穿孔，所述固定片抵贴在所述光学膜片上。
  7. 如权利要求1所述的固定机构，其特征在于：所述固定柱以铆接、焊接或卡接的方式固定在背板上。
  8. 一种用于背光模块的固定机构，所述背光模块具有背板及光学组件；其特征在于：所述固定机构包含多个固定柱，其上端设有一环状槽，所述固定柱位于所述环状槽上侧的部分为弹性材质；所述光学组件包括光学膜片，该光学膜片具有多个固定孔，每一所述固定孔由一第一圆孔及一第二圆孔部分相交所形成，所述第一圆孔的直径略大于所述固定柱的直径，所述第二圆孔的直径略大于或等于所述固定柱的环状槽底的直径；所述固定柱设置于所述背板上，所述光学膜片的固定孔的第二圆孔卡合在所述固定柱的环状槽上。
  9. 如权利要求8所述的固定机构，其特征在于：所述固定柱以铆接、焊接或卡接的方式固定在背板上。
  10. 如权利要求8所述的固定机构，其特征在于：所述光学组件另包含一导光板，所述导光板上开设有多个贯穿孔，所述贯穿孔对应所述固定柱，所述固定柱贯穿所述导光板的贯穿孔，并且所述光学膜片表面抵贴于所述导光板的表面。
  11. 一种背光模块，其特征在于：所述背光模块包含一背板、光学组件及多个固定机构，所述固定机构包含多个固定柱，所述固定柱固定在背板上；所述光学组件具有多个贯穿孔，所述固定住套入所述贯穿孔，并且所述固定机构抵贴在所述光学组件上。
  12. 如权利要求11所述的背光模块，其特征在于：所述固定机构还包括多个固定片，该固定片由弹性材质所制成，每一所述固定片具有一固定孔；所述光学组件上开设有多个贯穿孔，所述贯穿孔对应所述固定柱；所述固定柱设置于所述背板上，并套入所述光学组件的贯穿孔，所述固定片的固定孔卡合在所述固定柱上，并且所述固定片抵贴在所述光学组件上。
  13. 如权利要求11所述的背光模块，其特征在于：所述固定柱的上端设有一第一卡合部，所述固定片的固定孔内对应设有第二卡合部，所述第二卡合部卡合于所述第一卡合部。
  14. 如权利要求13所述的背光模块，其特征在于：所述固定柱的第一卡合部是一凹槽，所述固定片的固定孔的第二卡合部是一凸缘。
  15. 如权利要求13所述的背光模块，其特征在于：所述固定柱的第一卡合部是一凸缘；所述固定片的固定孔的第二卡合部是一凹槽。
  16. 如权利要求11所述的背光模块，其特征在于：所述固定柱为上部分比下部分细的外型，形成一承载部以承载所述光学膜片，所述光学膜片上开设所述贯穿孔，所述固定片抵贴在所述光学膜片上。
  17. 如权利要求11所述的背光模块，其特征在于：所述固定柱以铆接、焊接或卡接的方式固定在背板上。
  18. 如权利要求11所述的背光模块，其特征在于：所述固定柱上端设有一环状槽，所述固定柱位于所述环状槽上侧的部分为弹性材质；所述光学组件包括光学膜片，该光学膜片具有多个固定孔，每一所述固定孔由一第一圆孔及一第二圆孔部分相交所形成，所述第一圆孔的直径略大于所述固定柱的直径，所述第二圆孔的直径约等于所述固定柱的环状槽底的直径；所述固定柱设置于所述背板上，所述光学膜片的固定孔的第二圆孔卡合在所述固定柱的环状槽上。
  19. 如权利要求18所述的背光模块，其特征在于：所述光学组件还包括导光板，该导光板上开设有多个贯穿孔，所述贯穿孔对应所述固定柱，所述固定柱贯穿所述导光板的贯穿孔，并且所述光学膜片表面抵贴于所述导光板的表面。
PCT/CN2011/073457 2011-04-21 2011-04-28 用于背光模块的固定机构及背光模块 Ceased WO2012142775A1 (zh)

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