WO2014026428A1 - 背板组件及液晶显示器 - Google Patents

背板组件及液晶显示器 Download PDF

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Publication number
WO2014026428A1
WO2014026428A1 PCT/CN2012/082822 CN2012082822W WO2014026428A1 WO 2014026428 A1 WO2014026428 A1 WO 2014026428A1 CN 2012082822 W CN2012082822 W CN 2012082822W WO 2014026428 A1 WO2014026428 A1 WO 2014026428A1
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WO
WIPO (PCT)
Prior art keywords
optical unit
opening
annular head
plate
unit positioning
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2012/082822
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English (en)
French (fr)
Inventor
俞刚
杨熙
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/811,127 priority Critical patent/US8958027B2/en
Publication of WO2014026428A1 publication Critical patent/WO2014026428A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133608Direct backlight including particular frames or supporting means
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0081Mechanical 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
    • G02B6/0086Positioning aspects
    • G02B6/0088Positioning aspects of the light guide or other optical sheets in the package
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/18Construction of rack or frame

Definitions

  • This invention relates to a backplane assembly and a liquid crystal display, and more particularly to a backplane assembly and a liquid crystal display that achieve a narrow bezel effect by bringing the distance between the optical unit positioning post and the side of the backplane to zero. Background technique
  • the optical unit positioning post is a common light guide plate positioning structure.
  • the optical unit positioning post can be fixed on the back plate of the backlight module through many processing methods. The most common processing method is riveting.
  • the method of pressing riveting is to fix a pressing riveting die on a punching bed, opening a hole on a sheet metal part, and placing the sheet metal part on a punching die of the pressing riveting mold, the sheet metal part
  • the hole is opposite to an inner hole of the punching die, and the hole has the same diameter as the inner hole.
  • the optical unit positioning post to be riveted is placed on the hole of the sheet metal member, and the optical unit positioning post is press-fitted onto the sheet metal member by the punching process of the punching machine. After the riveting is completed, the sheet metal member is removed to complete the demolding.
  • FIG. 1 is an architectural diagram of the current backplane assembly 1.
  • Figure 2 is an enlarged cross-sectional view of the optical unit positioning post 12 of the current backplane assembly 1 along the AA cut line.
  • a backplane assembly 1 is adapted to receive and position an optical unit 2.
  • the backplane assembly 1 includes: a backing plate 10, a plurality of stepped holes 11 and a plurality of optical unit positioning posts 12.
  • the backing plate 10 has a panel member 101 and an upright side 102.
  • the plate member 101 has a first surface 1011 and a second surface 1012.
  • the upright side 102 surrounds and is perpendicular to the panel 101.
  • the stepped hole 11 is formed in the back plate 10, and the stepped hole 11 has a first opening 111, a second opening 112 and an annular stepped recess 113.
  • the first opening 111 is formed on the first surface 1011
  • the second opening 112 is formed on the second surface 1012.
  • the annular stepped recess 113 is formed between the first opening 111 and the second opening 112 such that the first opening 111 is smaller than the second opening 112.
  • Each optical unit positioning post 12 has a cylindrical portion 121 and an annular shoulder 122.
  • the cylindrical portion 121 has a positioning function for positioning the optical unit 2
  • the optical unit 2 has a plurality of positioning portions 21 respectively corresponding to each of the cylindrical portions 121.
  • Each annular shoulder 122 is formed at one end surface of each of the cylindrical portions 121.
  • Each of the optical unit positioning posts 12 penetrates from each of the second openings 112 with the cylindrical portion 121 and passes out from each of the corresponding first openings 111.
  • each optical unit positioning post 12 is riveted to the plate member 101 in a stamping manner, at which time the annular shoulder portion 122 of each optical unit positioning post 12 is tightly coupled with the annular stepped recess 113 of the stepped hole 11 to make each optical unit
  • the positioning post 1 is fixed to the back plate 10.
  • the diameter of the cylindrical portion 121 of each optical unit positioning post 12 is D1
  • the diameter of the annular shoulder 122 on the end surface of each optical unit positioning post 12 is D2.
  • each optical unit positioning post 12 is first riveted to the panel by riveting.
  • the plate member 101 is further bent to form the upright side 102. If the second opening 112 is too close to or into the bent region forming the upright side 102, the bending action of forming the upright side 102 will deform the second opening 112 and the annular shoulder 122 of each optical unit positioning post 12. . It can be seen that if it is desired that the cylindrical portion 121 of each optical unit positioning post 12 can be very close to the upright side 102, that is, the distance L1 of the cylindrical portion 121 to the upright side 102 approaches zero, the diameter of the annular shoulder D2 should be less than or equal to the diameter D1 of the cylindrical portion such that the second opening 112 does not fall into the bent region of the upright side 102.
  • the maximum visible area of the optical unit 2 is limited to the cylindrical portion 121 of each optical unit positioning post 12 to The distance from the upright side 102. If the distance L1 from the cylindrical portion 121 to the upright side 102 cannot be reduced, the maximum visible area of the optical unit 2 cannot be made large, that is, the thickness of the frame of the liquid crystal display cannot be narrowed.
  • Another object of the present invention is to provide a liquid crystal display comprising a backplane assembly for reducing the distance from the optical unit positioning post of the positioning optical unit to the upright side, further allowing the liquid crystal display to reach a narrow bezel effect.
  • the present invention provides a backplane assembly suitable for housing and positioning an optical unit.
  • the backplane assembly includes: a backing plate, a plurality of tapered holes, and a plurality of optical unit positioning posts.
  • the backing plate includes: a panel and an upstanding side that surrounds and vertically the panel.
  • the panel has a first surface and a second surface opposite the first surface.
  • the plurality of tapered holes are formed in the back plate, and each of the tapered holes has a first opening and a second opening, each of the first openings is formed on the first surface, and each of the second openings is formed on the second surface Each of the first openings is smaller than each of the second openings.
  • Each of the optical unit positioning posts protrudes from the first surface for positioning the optical unit.
  • Each of the optical units positions the post and has a cylindrical portion and an annular head formed at one end of the cylindrical portion.
  • the outer ring of the annular head has a diameter smaller than the diameter of the cylindrical portion.
  • the annular head of each optical unit positioning post is respectively inserted into each of the tapered holes by the first opening. The external force deforms and expands each of the annular heads to respectively abut each of the tapered holes to fix the optical unit positioning column On the backboard.
  • the diameter of the outer ring of the deformed annular head is still smaller than the diameter of the cylindrical portion.
  • the plurality of optical unit positioning posts include at least a stud stud, and the annular head is deformed and expanded to be joined to the plate by a riveting engagement.
  • the plurality of optical unit positioning posts include at least a riveting stud, and the annular head is deformed and expanded to be joined to the plate by a riveting engagement.
  • the optical unit is a light guide plate.
  • the present invention provides a liquid crystal display comprising a liquid crystal module and a backlight module.
  • the backlight module comprises: a backplane assembly and an optical unit, the backplane assembly comprising: a backing plate, a plurality of tapered holes and a plurality of optical unit positioning posts.
  • the back panel includes: a panel and upstanding sides that surround and perpendicular the panel. The panel has a first surface and a second surface opposite the first surface.
  • the plurality of tapered holes are formed in the back plate, the tapered holes have a first opening and a second opening, each of the first openings is formed on the first surface, and each of the second openings is formed on the second surface Each of the first openings is smaller than each of the second openings.
  • Each of the optical unit positioning posts protrudes from the first surface for positioning the optical unit.
  • Each of the optical units positions the post and has a cylindrical portion and an annular head formed at one end of the cylindrical portion.
  • the outer diameter of the annular head is smaller than the diameter of the cylindrical portion.
  • the annular head of each of the optical unit positioning posts is inserted into each of the tapered holes by each of the first openings. The external force deforms the outer annular head to respectively abut against each of the tapered holes, and the optical unit positioning post is fixed to the back plate.
  • the diameter of the outer ring of the deformed annular head is still smaller than the diameter of the cylindrical portion.
  • the plurality of optical unit positioning posts include at least a stud stud, and the annular head is deformed to be expanded and joined to the plate by a riveting engagement.
  • the plurality of optical unit positioning posts include at least a stud stud, and the annular head is deformed to be expanded and joined to the plate by a riveting engagement.
  • the optical unit is a light guide plate.
  • the backplane assembly and the liquid crystal display of the present invention have the effect that external force causes the annular head of each optical unit positioning post to be deformed and expanded, and respectively abuts each of the tapered holes to allow the optical unit
  • the positioning post is fixed to the back plate.
  • the diameter of the outer ring of the deformed annular head is still smaller than the diameter of the cylindrical portion, so that the distance from the cylindrical portion to the upright side approaches zero, further allowing the liquid crystal display to achieve a narrow bezel effect.
  • Figure 1 shows the architecture of the current backplane assembly.
  • Figure 2 is an enlarged cross-sectional view of the optical unit positioning post of the current backplane assembly along the AA cut line.
  • Figure 3 is a block diagram of the backplane assembly of the present invention.
  • Fig. 4 is an enlarged cross-sectional view taken along the line BB of the BB before the deformation of the annular head of the optical unit positioning post of the back plate assembly of the present invention.
  • Figure 5 is an enlarged cross-sectional view taken along the line BB of the optical unit of the back plate assembly of the present invention after the annular head of the optical unit positioning post is deformed and expanded.
  • Figure 6 is a schematic view of a liquid crystal display of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
  • the embodiments shown in the drawings will be further described in detail.
  • FIG. 3 is a structural diagram of a backplane assembly 4 of the present invention.
  • Figure 4 is an enlarged cross-sectional view of the backing plate assembly 4 of the present invention taken along the line BB.
  • the backlight module 3 includes: a backplane assembly 4 and an optical unit 5.
  • the backplane assembly 4 is adapted to accommodate and position the optical unit 5, and the backplane assembly 4 includes: a backing plate 40, a plurality of tapered holes 41, and a plurality of optical unit positioning posts 42.
  • the backing plate 40 includes: a panel 401 and an upstanding side 402.
  • the plate member 401 has a first surface 4011 and a second surface 4012, and the second surface 4012 is opposite to the first surface 4011.
  • the upstanding side 402 surrounds and is perpendicular to the panel 401.
  • a plurality of tapered holes 41 are formed in the plate member 401, and each of the tapered holes 41 has a first opening 411, a second opening 412 and a tapered hole wall 413.
  • Each of the first openings 411 is formed on the first surface 4011 of the plate member 401
  • each of the second openings 412 is formed on the second surface 4012 of the plate member 401
  • each of the first openings 411 is smaller than each of the second openings 412
  • each A tapered hole wall 413 is formed and is connected between the corresponding first opening 411 and second opening 412.
  • Each optical unit positioning post 42 protrudes from the first surface 4011 for positioning of the optical unit 5.
  • Each optical unit positioning post 42 has a cylindrical portion 421 and an annular head portion 422 formed on the cylindrical portion 421 - an end surface, and an outer ring diameter D4 of each annular head portion 422 is smaller than each column A diameter D3 of the body 421.
  • the annular head portion 422 of each optical unit positioning post 42 is respectively inserted into the tapered hole 41 from each of the first openings 411, and the end surface of each of the cylindrical portions 421 forming the annular head portion 422 is disposed at the first opening 411. On the surrounding first surface 4011.
  • an external force deforms and expands each of the annular head portions 422 to respectively abut against each of the tapered holes 41.
  • the tapered hole wall 413 allows each optical unit positioning post 42 to be fixed to the plate member 401.
  • An outer ring diameter D5 of each of the deformed annular head portions 422 is still smaller than the diameter D3 of each of the cylindrical portions 421.
  • each annular head portion 422 is deformed and expanded may be a riveting or a riveting.
  • a plurality of optical unit positioning posts 42 include at least a stud stud.
  • the optical unit 5 has a plurality of positioning portions 51, and each of the positioning portions 51 is formed at a position corresponding to each of the optical unit positioning posts 42.
  • the optical unit 5 can be positioned in the backplane assembly 4 by the relative positioning of a plurality of positioning portions 51 and a plurality of optical unit positioning posts 42.
  • the optical unit 5 may be a light guide plate or a diffusion plate.
  • FIG. 6 is a schematic view of a liquid crystal display 6 of the present invention.
  • the liquid crystal display 6 includes a liquid crystal module 5 and a backlight module 3 including the above-described back sheet assembly 4.
  • the back plate assembly 4 and the liquid crystal display 6 of the present invention deform and expand the annular head portion 422 of each optical unit positioning post 42 that is disposed in each of the tapered holes 41 by an external force, thereby Each of the annular heads 422 abuts each of the corresponding tapered holes 41, and each optical unit positioning post 42 is fixed to the plate member 401. Since the outer ring diameter D5 of the annular head portion 422 after each deformation is still smaller than the diameter D3 of each of the cylindrical portions 421, the distance from each of the cylindrical portions 421 to the upright side 402 can be made close to zero. Further, the liquid crystal display 6 is brought to a narrow bezel effect.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Description

背板组件及液晶显示器
技术领域
本发明是关于一种背板组件及液晶显示器,特别是关于一种借由让光学单元定位柱至 背板侧边的距离趋近于零, 而达到窄边框效果的背板组件及液晶显示器。 背景技术
在液晶显示器的领域中,显示器的边框越来越小是未来的趋势。因此在显示器的背光 模块的生产过程中,如何将背光模块的可视区扩展到最大,且将背光模块的边框縮到最小, 就更显得重要了。在侧光式背光模块中, 导光板是很重要的光学组件。而导光板的定位方 式, 也会影响液晶显示器的边框厚度。一般而言, 光学单元定位柱是常见的一种导光板定 位结构, 光学单元定位柱可透过许多加工方式, 将其固定在背光模块的背板上, 最常见的 加工方式为压铆。
压铆的做法是将一压铆模具固定于一冲床上,开设一孔于一钣金件上,将该钣金件放 置于该压铆模具的一抽孔凹模上,该钣金件的该孔与该抽孔凹模的一内孔相对,且该孔与 该内孔的孔径相同。然后, 将待压铆的光学单元定位柱放置于该钣金件的该孔上, 再通过 该冲床的冲压过程, 将该光学单元定位柱压铆于该钣金件上。完成压铆后, 将该钣金件取 下, 完成脱模。
请同时参考图 1与图 2, 图 1为现行背板组件 1的架构图。 图 2为现行背板组件 1的 光学单元定位柱 12, 沿 AA割面线的剖面放大图。
一背板组件 1适用于容置与定位一光学单元 2。 其中, 背板组件 1包括: 一背板 10、 多数个阶梯孔 11与多数个光学单元定位柱 12。
背板 10具有一板件 101与一直立侧边 102。板件 101具有一第一表面 1011与一第二 表面 1012。 直立侧边 102环绕且垂直板件 101。 阶梯孔 11形成于背板 10, 阶梯孔 11具 有一第一开口 111、 一第二开口 112与一环形阶梯凹部 113。 第一开口 111形成于第一表 面 1011, 第二开口 112形成于第二表面 1012。 环形阶梯凹部 113形成于第一开口 111与 第二开口 112之间, 使第一开口 111小于第二开口 112。
每一光学单元定位柱 12具有一柱体部 121与一环形肩部 122。 柱体部 121具有定位 的功能, 在此用以定位光学单元 2, 且光学单元 2具有多数个分别对应于每一柱体部 121 的定位部 21。 每一环形肩部 122形成于每一柱体部 121的一端面。 每一光学单元定位柱 12以柱体部 121分别从每一第二开口 112穿入,并从其相对应的每一第一开口 111穿出。 接着, 每一光学单元定位柱 12以冲压方式铆合至板件 101, 此时每一光学单元定位 柱 12的环形肩部 122与阶梯孔 11的环形阶梯凹部 113紧密结合,使每一光学单元定位柱 1 固定于背板 10。 每一光学单元定位柱 12的柱体部 121的直径为 Dl, 而每一光学单元 定位柱 12端面上的环形肩部 122的直径为 D2。
在背板组件 1 的制作过程中, 先将每一光学单元定位柱 12 以压铆方式铆合至板件
101, 再将板件 101以折弯方式形成直立侧边 102。 若第二开口 112过于靠近或进入形成 直立侧边 102的弯折区域时,形成直立侧边 102的折弯动作将会使第二开口 112及每一光 学单元定位柱 12的环形肩部 122变形。由此可知,若希望每一光学单元定位柱 12的柱体 部 121能非常靠近直立侧边 102, 即柱体部 121至直立侧边 102的距离 L1趋近于零, 则 环形肩部的直径 D2应小于或等于柱体部的直径 D1,使第二开口 112不会落入直立侧边 102 的弯折区域。
由于液晶显示器的边框厚度取决于光学单元 2的最大可视区至直立侧边 102的距离, 而光学单元 2的最大可视区则受限于每一光学单元定位柱 12的柱体部 121至直立侧边 102 的距离。 若柱体部 121至直立侧边 102的距离 L1无法减小, 则光学单元 2的最大可视区 就无法变大, 亦即液晶显示器的边框厚度无法变窄。 发明内容
本发明的目的在于,提出一种背板组件,其用于縮小定位光学单元的光学单元定位柱 至直立侧边的距离, 进一步让背板组件达到窄边框的效果。
本发明的另一目的在于, 提出一种液晶显示器, 其包括背板组件, 该背板组件用于縮 小定位光学单元的光学单元定位柱至直立侧边的距离,进一步让液晶显示器达到窄边框的 效果。
本发明提出一种背板组件, 适用于容置与定位光学单元, 该背板组件包括: 背板、 多 数个锥孔以及多数个光学单元定位柱。该背板包括:板件以及环绕且垂直该板件的直立侧 边。该板件具有第一表面以及相对于该第一表面的第二表面。该多数个锥孔形成于该背板, 该每一锥孔具有第一开口与第二开口,该每一第一开口形成于该第一表面,该每一第二开 口形成于该第二表面, 该每一第一开口小于该每一第二开口。
该每一光学单元定位柱凸出于该第一表面,用以供该光学单元定位。该每一光学单元 定位柱且具有柱体部与形成于该柱体部一端的环形头部。该环形头部的外环直径小于该柱 体部的直径。该每一光学单元定位柱的该环形头部分别由该每一第一开口穿入该每一锥孔 中。以外力使该每一环形头部变形外扩而分别抵紧该每一锥孔,让该光学单元定位柱固定 于该背板。 该变形外扩后的环形头部的外环直径仍小于该柱体部的直径。
前述的背板组件中,该多数个光学单元定位柱至少包含涨铆螺柱,使该环形头部变形 外扩而接合于该板件的方式为涨铆接合。
前述的背板组件中,该多数个光学单元定位柱至少包含涨铆螺柱,使该环形头部变形 外扩而接合于该板件的方式为旋铆接合。
前述的背板组件中, 该光学单元为导光板。
前述的背板组件中, 该每一柱体部至该直立侧边的距离趋近于零。
本发明提出一种液晶显示器, 其包括液晶模块与背光模块, 该背光模块包括: 背板组 件与光学单元, 该背板组件包括: 背板、 多数个锥孔以及多数个光学单元定位柱。 该背板 包括:板件以及环绕且垂直该板件的直立侧边。该板件具有第一表面以及相对于该第一表 面的第二表面。该多数个锥孔形成于该背板, 该每一锥孔具有第一开口与第二开口, 该每 一第一开口形成于该第一表面,该每一第二开口形成于该第二表面,该每一第一开口小于 该每一第二开口。
该每一光学单元定位柱凸出于该第一表面,用以供该光学单元定位。该每一光学单元 定位柱且具有柱体部与形成于该柱体部一端的环形头部。该环形头部的外环直径小于该柱 体部的直径。该每一光学单元定位柱的该环形头部分别由该每一第一开口穿入该每一锥孔 中。以外力使该每一环形头部变形外扩而分别抵紧该每一锥孔,让该光学单元定位柱固定 于该背板。 该变形外扩后的环形头部的外环直径仍小于该柱体部的直径。
前述的液晶显示器中,该多数个光学单元定位柱至少包含涨铆螺柱,使该环形头部变 形外扩而接合于该板件的方式为涨铆接合。
前述的液晶显示器中,该多数个光学单元定位柱至少包含涨铆螺柱,使该环形头部变 形外扩而接合于该板件的方式为旋铆接合。
前述的液晶显示器中, 该光学单元为导光板。
前述的液晶显示器中, 该每一柱体部至该直立侧边的距离趋近于零。
综上所述,本发明的背板组件及液晶显示器效果在于, 以外力使该每一光学单元定位 柱的该环形头部变形外扩, 而分别抵紧该每一锥孔, 让该光学单元定位柱固定于该背板。 该变形外扩后的环形头部的外环直径仍小于该柱体部的直径,因而使该柱体部至该直立侧 边的距离趋近于零, 进一步让液晶显示器达到窄边框的效果。
上述说明仅是本发明技术方案的概述,为了能够更清楚了解本发明的技术手段,并可 依照说明书的内容予以实施, 以下为本发明的实施例配合附图详细说明如后。 附图说明
图 1为现行背板组件的架构图。
图 2为现行背板组件的光学单元定位柱, 沿 AA割面线的剖面放大图。
图 3为本发明背板组件的架构图。
图 4为本发明背板组件的光学单元定位柱的环形头部变形外扩前, 沿 BB割面线的剖 面放大图。
图 5为本发明背板组件的光学单元定位柱的环形头部变形外扩后, 沿 BB割面线的剖 面放大图。
图 6为本发明液晶显示器的示意图。 具体实施方式 以下结合附图所示的实施例作进一步详述。
请同时参考图 3与图 4, 图 3为本发明一背板组件 4的架构图。 图 4为本发明背板组 件 4, 沿 BB割面线的剖面放大图。
图中绘出一背光模块 3的局部结构, 背光模块 3包括: 背板组件 4与一光学单元 5。 首先, 背板组件 4适用于容置与定位光学单元 5, 且背板组件 4包括: 一背板 40、 多数个 锥孔 41以及多数个光学单元定位柱 42。
背板 40包括: 一板件 401以及一直立侧边 402。板件 401具有一第一表面 4011以及 一第二表面 4012,且第二表面 4012相对于第一表面 4011。直立侧边 402环绕且垂直于板 件 401。
多数个锥孔 41形成于板件 401, 每一锥孔 41具有一第一开口 411、 一第二开口 412 与一锥形孔壁 413。 每一第一开口 411形成于板件 401的第一表面 4011, 每一第二开口 412形成于板件 401的第二表面 4012, 每一第一开口 411小于每一第二开口 412, 且每一 锥形孔壁 413形成且通连于两相对应的第一开口 411与第二开口 412之间。
每一光学单元定位柱 42凸出于第一表面 4011, 用以供光学单元 5定位。每一光学单 元定位柱 42具有一柱体部 421与一环形头部 422, 环形头部 422形成于柱体部 421—端 面, 且每一环形头部 422的一外环直径 D4小于每一柱体部 421的一直径 D3。将每一光学 单元定位柱 42的环形头部 422分别由每一第一开口 411穿入其锥孔 41中,且让每一柱体 部 421形成环形头部 422的端面设置于第一开口 411周围的第一表面 4011上。
接着, 请参考图 5, 以外力使每一环形头部 422变形外扩而分别抵紧每一锥孔 41的 锥形孔壁 413, 让每一光学单元定位柱 42固定于板件 401。 每一变形外扩后的环形头部 422的一外环直径 D5仍小于每一柱体部 421的直径 D3。
其中,使每一环形头部 422变形外扩的方式可为涨铆或旋铆。多数个光学单元定位柱 42至少包含涨铆螺柱。
由于每一变形外扩后的环形头部 422的外环直径 D5仍小于每一柱体部 421的直径 D3, 可使每一柱体部 421至直立侧边 402的距离趋近于零。 因此可将每一光学单元定位柱 42 的设置位置向直立侧边 402靠近。而光学单元 5具有多数个定位部 51, 每一定位部 51的 形成位置分别与每一光学单元定位柱 42对应。借由多数个定位部 51以及多数个光学单元 定位柱 42的相对设置, 即可将光学单元 5定位于背板组件 4。 其中, 光学单元 5可为导 光板或扩散板。
图 6为本发明一液晶显示器 6的示意图。液晶显示器 6包括一液晶模块 5与包含有前 述背板组件 4的背光模块 3。
经由上述实施例的说明, 本发明的背板组件 4及液晶显示器 6, 利用外力使穿设在每 一锥孔 41中的每一光学单元定位柱 42的环形头部 422变形外扩, 因而使每一环形头部 422分别抵紧对应的每一锥孔 41, 让每一光学单元定位柱 42固定于板件 401。 由于每一 变形外扩后的环形头部 422的外环直径 D5仍小于每一柱体部 421的直径 D3,故可使每一 柱体部 421至直立侧边 402的距离趋近于零, 进一步让液晶显示器 6达到窄边框的效果。
以上, 仅为本发明的较佳实施例, 意在进一步说明本发明, 而非对其进行限定。 凡根 据上述的文字和附图所公开的内容进行的简单的替换,都在本专利的权利要求保护范围之 列。

Claims

权利要求
1.一种背板组件, 适用于容置与定位一光学单元, 该背板组件包括:
一背板, 其包括一板件以及环绕且垂直该板件的直立侧边; 该板件具一有第一表面以 及相对于该第一表面的一第二表面;
多数个锥孔, 形成于该背板, 该每一锥孔具有一第一开口与一第二开口, 该第一开口 形成于该第一表面, 该第二开口形成于该第二表面, 该第一开口小于该第二开口; 以及 多数个光学单元定位柱, 凸出于该第一表面, 用以供该光学单元定位; 该每一光学单 元定位柱具有一柱体部与形成于该柱体部一端的一环形头部该环形头部的外环直径小于 该柱体部的直径该每一光学单元定位柱的该环形头部分别由该每一第一开口穿入该每一 锥孔中; 以外力使该每一环形头部变形外扩而分别抵紧该每一锥孔, 让该光学单元定位柱 固定于该背板;且该变形外扩后的环形头部的外环直径仍小于该柱体部的直径;
其中, 该多数个光学单元定位柱至少包含涨铆螺柱, 使该环形头部变形外扩而接合于 该板件的方式为涨铆或旋铆接合, 该光学单元为导光板, 该每一柱体部至该直立侧边的距 离趋近于零。
2.—种背板组件, 适用于容置与定位光学单元, 该背板组件包括:
一背板, 其包括一板件以及环绕且垂直该板件的直立侧边; 该板件具有一第一表面以 及相对于该第一表面的一第二表面;
多数个锥孔, 形成于该背板, 该每一锥孔具有第一开口与第二开口, 该第一开口形成 于该第一表面, 该第二开口形成于该第二表面, 该第一开口小于该第二开口; 以及
多数个光学单元定位柱, 凸出于该第一表面, 用以供该光学单元定位; 该每一光学单 元定位柱具有柱体部与形成于该柱体部一端的环形头部该环形头部的外环直径小于该柱 体部的直径该每一光学单元定位柱的该环形头部分别由该每一第一开口穿入该每一锥孔 中; 以外力使该每一环形头部变形外扩而分别抵紧该每一锥孔, 让该光学单元定位柱固定 于该背板;且该变形外扩后的环形头部的外环直径仍小于该柱体部的直径。
3.如权利要求 2 所述的背板组件, 其中, 该多数个光学单元定位柱至少包含涨铆螺 柱, 使该环形头部变形外扩而接合于该板件的方式为涨铆接合。
4.如权利要求 2 所述的背板组件, 其中, 该多数个光学单元定位柱至少包含涨铆螺 柱, 使该环形头部变形外扩而接合于该板件的方式为旋铆接合。
5.如权利要求 2所述的背板组件, 其中, 该光学单元为导光板。
6.如权利要求 2所述的背板组件,其中,该每一柱体部至该直立侧边的距离趋近于零
7.一种液晶显示器, 包括液晶模块与背光模块, 该背光模块包括: 一背板组件与一光 学单元, 该背板组件包括:
一背板, 其包括板件以及环绕且垂直该板件的一直立侧边; 该板件具有第一表面以及 相对于该第一表面的第二表面;
多数个锥孔, 形成于该背板, 该每一锥孔具有第一开口与第二开口, 该第一开口形成 于该第一表面, 该第二开口形成于该第二表面, 该第一开口小于该第二开口; 以及
多数个光学单元定位柱, 凸出于该第一表面, 用以供该光学单元定位; 该每一光学单 元定位柱具有柱体部与形成于该柱体部一端的环形头部该环形头部的外环直径小于该柱 体部的直径该每一光学单元定位柱的该环形头部分别由该每一第一开口穿入该每一锥孔 中; 以外力使该每一环形头部变形外扩而分别抵紧该每一锥孔, 让该光学单元定位柱固定 于该背板;且该变形外扩后的环形头部的外环直径仍小于该柱体部的直径。
8.如权利要求 7所述的液晶显示器, 其中, 该多数个光学单元定位柱至少包含涨铆螺 柱, 使该环形头部变形外扩而接合于该板件的方式为涨铆接合。
9.如权利要求 7所述的液晶显示器, 其中, 该多数个光学单元定位柱至少包含涨铆螺 柱, 使该环形头部变形外扩而接合于该板件的方式为旋铆接合。
10.如权利要求 7所述的液晶显示器, 其中, 该光学单元为导光板。
11.如权利要求 7所述的液晶显示器, 其中, 该每一柱体部至该直立侧边的距离趋近 于零。
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