WO2014012262A1 - 一种背光模组及液晶显示装置 - Google Patents

一种背光模组及液晶显示装置 Download PDF

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Publication number
WO2014012262A1
WO2014012262A1 PCT/CN2012/079008 CN2012079008W WO2014012262A1 WO 2014012262 A1 WO2014012262 A1 WO 2014012262A1 CN 2012079008 W CN2012079008 W CN 2012079008W WO 2014012262 A1 WO2014012262 A1 WO 2014012262A1
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WO
WIPO (PCT)
Prior art keywords
limiting
light guide
guide plate
backlight module
liquid crystal
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/CN2012/079008
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English (en)
French (fr)
Inventor
陈仕祥
周革革
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.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/582,422 priority Critical patent/US20140022489A1/en
Priority to DE201211006492 priority patent/DE112012006492T5/de
Publication of WO2014012262A1 publication Critical patent/WO2014012262A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B6/0086—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
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02F2201/465—Snap -fit

Definitions

  • the present invention relates to the field of liquid crystal display, and more particularly to a backlight module and a fixing member for fixing the light guide plate.
  • the backlight module is one of the key components of the liquid crystal display device, and is mainly used for providing sufficient light source with uniform brightness and distribution to enable the liquid crystal display device to display images normally.
  • a liquid crystal display module of a liquid crystal display device includes: a back plate 10 , a reflective sheet 41 disposed in the back plate 10 , a light guide plate 40 disposed on the reflective sheet 41 , and a light guide plate
  • the middle frame 60 is disposed on the upper surface of the liquid crystal panel 50, and the liquid crystal panel 50 is used to restrict the liquid crystal panel 50 by the front frame 20. Vertical position.
  • the front frame 20 , the middle frame 60 and the back plate 10 of the backlight module of the liquid crystal display module respectively have different functions, and the back plate 10 has all the components and ensures the flatness of the backlight module.
  • the middle frame 60 mainly carries the liquid crystal panel 50 ( Panel), and limits the vertical position of the light guide plate 40, and can also block some light leakage;
  • the front frame 20 mainly cooperates with the middle frame 60 to limit the vertical position of the liquid crystal panel 50 and prevent
  • the tripping of the light guide plate 40 is mainly realized by the stud 70.
  • the light guide plate 40 may collide with the stud 70, and the light guide plate 40 may be broken. .
  • the technical problem to be solved by the present invention is to provide a backlight module and a liquid crystal display device for a light guide plate positioning structure.
  • a backlight module includes: a back plate, a light guide plate disposed in the back plate, and a limiting member for limiting the light guide plate;
  • the light guide plate has a square structure, and the side surface is flat without any other abrupt structure;
  • the limiting member includes a lateral limiting portion and a vertical limiting portion, and the lateral limiting portion has a limiting plane, the lateral direction a limiting plane of the limiting portion abuts against a side of the light guide plate, and the other side thereof abuts against a sidewall of the backboard;
  • the vertical limiting portion presses the light of the light guide plate Above the surface;
  • the elastic limiting of the lateral limiting portion of the limiting member relative to the side of the side wall of the backing plate, the side wall of the backing plate is provided with a card hole, and the limiting member passes thereon The elastic snap fits into the card hole on the back plate to achieve fixing.
  • a backlight module includes: a back plate and a light guide plate disposed in the back plate, and a limiting member for limiting the light guide plate,
  • the limiting member includes a lateral limiting portion that abuts against a side of the light guide plate and abuts against a sidewall of the backing plate.
  • the light guide plate has a square structure, and the side surface is flat without any other abrupt structure; the lateral limiting portion has a limiting plane, and the limiting plane is in surface contact with the side of the light guide plate. Since the limiting plane of the lateral limiting portion is in contact with the edge surface of the light guide plate, the partial pressure of the lateral limiting portion on the edge of the light guiding plate is reduced, so that no structure such as a groove is needed to alleviate the limiting member to the light guiding plate. For the riveting column, because of the small contact area with the light guide plate, directly disposed on the edge of the flat light guide plate may easily damage the edge of the light guide plate, so that a groove is needed to relieve the pressure on the light guide plate.
  • the limiting member further includes a vertical limiting portion, and the vertical limiting portion is pressed against the light emitting surface of the light guide plate.
  • a vertical limiting portion combined with the back plate to achieve the vertical limit of the light guide plate
  • the position of the light guide plate is limited and fixed in the backlight module; it replaces the role of the middle frame pressing the light guide plate, so that in the structure of the backlight module, the structure of the middle frame can also be compressed. Or directly cancel the design of the middle frame.
  • a limiting boss for limiting a lateral position of the liquid crystal panel of the liquid crystal display device is further disposed on the vertical limiting portion of the limiting member, wherein the vertical limiting portion is configured to carry the liquid crystal
  • the limiting protrusion is configured to limit an edge of the liquid crystal panel.
  • the position limit of the liquid crystal panel of the liquid crystal display device is realized by the limiting protrusion, thereby directly replacing the support and the limit of the middle frame to the liquid crystal panel, so that the middle frame can be directly omitted in the design of the liquid crystal display device
  • the design is conducive to the narrow frame design of the liquid crystal display device.
  • the limiting member is provided with a fixing structure for fixing it to the back plate.
  • the mounting of the limiting member is more reliable, and can be directly fixed to the backboard without the front frame.
  • the fixing structure is an elastic buckle disposed on a side of the lateral limiting portion of the limiting member with respect to a side wall of the backboard, and a sidewall of the backing plate is provided with a card hole,
  • the limiting member is fixed by a snap hole on the back plate of the elastic buckle.
  • the fixing member is fixed by the cooperation of the buckle and the card hole, and the structure is simple, and the installation is convenient, and only the limiting member can be pressed down.
  • the limiting member is an L-shaped plate member, and the lateral limiting portion and the vertical limiting portion are perpendicular to each other and connected to form the L-shaped plate member.
  • the plate member can reduce the distance between the light guide plate and the side wall of the back plate, so that the area of the light guide plate can be made larger, thereby improving the optical taste of the edge of the backlight module; at the same time, the L-shaped structure is relatively simple, and is relatively easy. Production.
  • the buckle is directly formed in the plate-shaped lateral limiting portion.
  • the buckle can be directly stamped directly on the lateral limit of the L-shaped stop member, and no additional structure is required to make the cartridge.
  • the limiting member is made of a plastic material.
  • the limiting member made of plastic material has good elasticity and low cost, so the cost is also low.
  • a liquid crystal display device includes the above backlight module.
  • a limiting member is disposed between the edge of the light guide plate and the side wall of the back plate, and the limiting member One side abuts against the light guide plate and the other side abuts against the side wall of the back plate, and the limiting member fills the gap between the side wall of the back plate and the side of the light guide plate, thereby realizing direct use of the limit member pair
  • the lateral limit of the light guide plate so that there is no need to rive a fixed stud on the back plate to achieve the lateral limit of the light guide plate, the structure of the back plate is compressed, and the position of the light guide plate is also compressed. structure.
  • 1 is a structural tube diagram of a conventional liquid crystal display module
  • FIG. 2 is a structural view of a backlight module of a first embodiment of the present invention
  • FIG. 3 is a structural tube diagram of a limiting member in the first embodiment of the present invention.
  • FIG. 4 is a structural tube diagram of a light guide plate in a conventional backlight module.
  • FIG. 5 is a structural view of a light guide plate according to an embodiment of the present invention.
  • FIG. 6 is a structural view of a liquid crystal display module according to a second embodiment of the present invention.
  • Figure 7 is a structural view of a structural member of a second embodiment of the present invention.
  • the backlight module includes: a back plate 10 , a reflective sheet 41 fixed in the back plate 10 , a light guide plate 40 disposed on the reflective sheet 41 , and a light guide plate .
  • the optical film 30 above 40; wherein, the light guide plate 40 and the reflection sheet 41 therebelow, the optical film 30 above it is limited by a limiting member 80.
  • the limiting member 80 includes a lateral limiting portion 81.
  • the inner side surface of the lateral limiting portion 81 is a flat surface, and a limiting plane is formed directly on the light guide plate 40.
  • Side (with The limiting plane is in contact with the side surface of the light guide plate 40 on the side of the vertical edge of the light-emitting surface of the light guide plate, so that the pressure of the limiting member 40 on the side of the light guide plate 40 can be prevented from being excessively large;
  • the other side of the portion 81 directly abuts against the side wall 11 of the back plate 10, and the gap between the side wall 11 of the back plate 10 and the side of the light guide plate 40 is filled by the limiting member 80, thereby realizing the use of the limiting member 80.
  • the lateral position of the light guide plate 40 is such that there is no need to rive a fixed stud on the back plate 10 to achieve lateral limitation of the light guide plate 40.
  • the limiting member 80 also replaces the effect of the middle frame 60 shown in FIG. 1 on the vertical limit of the light guide plate 40.
  • the limiting member 80 further includes a vertical member.
  • the vertical limiting portion 82 is disposed above the light emitting surface of the light guide plate 40, that is, above the optical film 30, and the vertical limit function of the light guide plate 40 is realized by matching the bottom of the back plate 10.
  • the vertical limiting portion 82 is located in the non-display area of the liquid crystal display device to avoid affecting the brightness, uniformity of the backlight, and the display range of the liquid crystal display device.
  • the stopper member 80 is provided with a fixing structure for fixing it to the backing plate 10. As shown in FIG. 3, an elastic buckle 83 is disposed on the lateral limiting portion 81 of the limiting member 80. Returning to FIG. 2, we can see that a "" hole is provided in the side wall 11 of the backing plate 10, The elastic buckle 83 on the limiting member 80 is locked into the hole for fixing, and the limiting reliability of the limiting member 80 is improved.
  • the limiting member 80 is an L-shaped plate member, and the lateral limiting portion 81 and the vertical limiting portion 82 are perpendicular to each other and joined to form the L-shaped plate member.
  • the buckle 83 is stamped and formed directly on the lateral limiting portion 81.
  • the limiting member 80 can be made of a plastic material, the plastic material is convenient to form, the price is cheap and the elasticity is good; the sheet metal processing shape can also be selected, and the processing of the sheet metal part is also convenient.
  • the mounting of the limiting member 80 can be directly pressed into the gap between the light guide plate 40 and the side wall 11 of the back plate 10. After the press-in, the buckle 83 is inserted into the side wall 11. Inside the card hole, the installation is very simple.
  • the applicant has proposed a scheme for reducing the cracking of the light guide plate by the stud column in the US patent application No. 13376657.
  • a groove 42 (a, b, c, d, e) is disposed on the boss, and the light guide plate 40 achieves its lateral limit by a stud disposed at the groove 42, as has been mentioned in the background art, using riveting
  • the column is liable to cause damage to the light guide plate 40.
  • the presence of the stud column may cause the screen of the liquid crystal display device to appear bright spots near the position of the stud column, especially in the case of a narrow frame.
  • the surface contact limiting member 80 is used instead, as shown in FIG. 5, which does not need to cut the groove on the light guide plate 40, so that the light guide plate 40 is a complete square structure, and its edge is flat without other abrupt structures, so that the optical taste of the edge of the liquid crystal display device is improved, and the phenomenon of bright spots is reduced.
  • a limiting boss 84 is further disposed on the vertical limiting portion 82 of the limiting member 80 , and the limiting boss 84 is used to limit the The side of the liquid crystal panel 50 in the liquid crystal display device shown in FIG. 6 is used for laterally limiting the liquid crystal panel 50.
  • the vertical limiting portion 82 can also be directly used to carry the liquid crystal panel 50 (ie, the liquid crystal panel). 50 is disposed above the vertical limiting portion), such that the limiting member 80 completely replaces the function of the middle frame 60 as shown in FIG. 1, and thus in the embodiment, the middle frame is eliminated.
  • the assembly reorganizes the structure of the liquid crystal display device while making the frame of the liquid crystal display device narrower.

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

Description

【技术领域】
本发明涉及液晶显示领域， 更具体的说， 涉及一种背光模组及用于固定导 光板的固定件。
【背景技术】
背光模组为液晶显示装置的关键组件之一， 其主要用于提供足够的亮度与 分布均匀的光源， 使液晶显示装置能正常显示影像。
如图 1所示为一种液晶显示装置的液晶显示模组， 包括： 背板 10、 设置于 背板 10内的反射片 41、 置于反射片 41之上的导光板 40、 置于导光板 40之上 置的中框 60, 中框 60还用于搭载液晶面板 50并提供用于限定液晶面板横向位 置的限位结构， 并通过前框 20压合液晶面板 50用以限制液晶面板 50的竖向位 置。
由图 1中可看出， 液晶显示模组的背光模组中的前框 20、 中框 60和背板 10分别具有不同的功能，背板 10具有承载所有部材并保证背光模组平整度的功 能； 中框 60主要承载液晶面板 50 ( Panel ), 并限制导光板 40的竖向位置， 而 且还可以遮挡一些漏光； 前框 20主要是配合中框 60限制液晶面板 50的竖向位 置并防止其跳脱， 其中导光板 40的横向固定主要是由铆柱 70来实现， 但是背 光模组在做震动沖击实验时， 导光板 40可能撞坏铆柱 70, 也有可能使导光板 40发生破裂。
本申请人曾在申请号为 13376657的 US专利申请中提出减小导光板 40被 铆柱 70撞裂的方案， 但其依然使用铆柱对导光板 40进行限位， 其使得背板的 制作变的复杂， 不易于降低成本。
【发明内容】 本发明所要解决的技术问题是提供一种导光板定位结构筒单的背光模组及 液晶显示装置。
本发明的目的是通过以下技术方案来实现的： 一种背光模组， 包括： 背板、 设置在背板内的导光板， 以及一用于对所述导光板限位的限位构件； 所述导光 板为方形结构， 其边侧平整无其他突变结构； 所述限位构件包括一横向限位部 以及一竖向限位部， 所述横向限位部具有一限位平面， 所述横向限位部的限位 平面抵紧在所述导光板的边侧， 并且其另一侧紧靠着所述背板的侧壁； 所述竖 向限位部压紧在所述导光板的出光面之上； 所述限位构件的横向限位部相对于 所述背板侧壁一侧的弹性卡扣， 所述背板的侧壁上设置有卡孔， 所述限位构件 通过其上的弹性卡扣卡入所述背板上的卡孔实现固定。
本发明的目的还通过以下技术方案来实现： 一种背光模组， 包括： 背板以 及设置在背板内的导光板， 还包括一用于对所述导光板限位的限位构件， 所述 限位构件包括一横向限位部， 所述横向限位部抵紧在所述导光板的边侧并紧靠 着所述背板的侧壁。
优选的， 所述导光板为方形结构， 其边侧平整无其他突变结构； 所述横向 限位部具有一限位平面， 所述限位平面与所述导光板的边侧之间面接触。 由于 横向限位部的限位平面与导光板的边缘面接触， 使的横向限位部对导光板的边 缘的局部压强得以减小， 从而不需要设置 槽等结构来緩解限位部件对导光板 的压强； 而对于铆柱来说， 由于其与导光板的接触面积较小， 直接设置在平整 的导光板的边缘会容易损坏导光板的边缘， 从而需要设置 槽来緩解其对导光 板的压强； 而对于本方案来说， 不需要再在导光板上设置凹槽来配合限位构件 的限位， 避免了在导光板上进行裁切， 也避免了在导光板在碰撞试验或者使用 碰撞时由于震动使得具有铆柱与凹槽结构的背光模组发生埴碰导致导光板的凹 槽脆弱部发生碎裂， 影响到导光板的光学性能。
优选的， 所述限位构件还包括一竖向限位部， 所述竖向限位部压紧在所述 导光板的出光面之上。 利用一竖向限位部， 结合背板来实现对导光板的竖向限 位， 使得导光板的三个方位均得到限位而固定在背光模组内； 其取代了中框压 紧导光板的作用， 从而在背光模组的结构中， 也可以筒化中框的结构或者直接 取消中框的设计。
优选的， 所述限位构件的竖向限位部之上还设置有一用于限制液晶显示装 置的液晶面板的横向位置的限位凸台， 所述竖向限位部用于承载所述液晶面板， 所述限位凸台用于对所述液晶面板的边缘进行限位。 通过限位凸台实现对液晶 显示装置的液晶面板的横向位置的限位， 从而直接取代了中框对液晶面板的支 撑及限位， 这样， 在液晶显示装置的设计中可以直接省去中框的设计， 有利于 液晶显示装置的窄边框化设计。
优选的， 所述限位构件设置有用于将其固定到所述背板上的固定结构。 使 得限位构件的安装更为可靠， 在没有前框的情况下可以直接固定在背板上。
优选的， 所述固定结构为设置在所述限位构件的横向限位部相对于所述背 板侧壁一侧的弹性卡扣， 所述背板的侧壁上设置有卡孔， 所述限位构件通过其 上的弹性卡扣卡入所述背板上的卡孔实现固定。 通过卡扣与卡孔的配合实现限 位构件的固定， 其结构筒单， 且安装方便， 只需将限位构件压下即可。
优选的， 所述限位构件为一 L形板状件， 所述横向限位部与所述竖向限位 部相互垂直并连接形成所述 L形板状件。 板状件可以减小导光板到背板侧壁之 间的距离， 从而使得导光板的面积可以做的更大， 进而提高背光模组边缘的光 学品味； 同时 L形结构较为筒单， 比较容易制作。
优选的，所述卡扣为在所述板状的横向限位部直接成型。卡扣可以直接在 L 形的限位构件的横向限位部上直接沖压成型， 不需要再另外增加其它结构， 制 作筒单。
优选的， 所述限位构件为塑胶材料制成。 塑胶材料制成的限位构件弹性好， 且价格低廉， 因而成本也低。
一种液晶显示装置， 包括上述的背光模组。
本发明由于在导光板的边缘与背板侧壁之间设置一限位构件， 该限位构件 的一侧抵紧所述导光板而另一侧紧靠着背板的侧壁， 利用限位构件填充了背板 的侧壁到导光板的边侧的空隙， 从而实现直接利用限位构件对导光板的横向限 位， 这样， 也就不需要在背板上铆接一个固定的铆柱来实现对导光板的横向限 位， 筒化了背板的结构， 同时也筒化了导光板的定位结构。
【附图说明】
图 1是现有一种液晶显示模组的结构筒图，
图 2是本发明实施例一的背光模组的结构筒图，
图 3是本发明实施例一中限位构件的结构筒图，
图 4是现有一种背光模组中的导光板的结构筒图，
图 5是本发明实施例一种导光板的结构筒图，
图 6是本发明实施例二的液晶显示模组的结构筒图，
图 7是本发明实施例二中限位构件的结构筒图。
其中： 10、 背板， 20、 前框， 30、 光学膜片， 40、 导光板， 41、 反射片， 42、 凹槽， 50、 液晶面板， 60、 中框， 70、 铆柱， 80、 限位构件， 81、 横向限 位部， 82、 竖向限位部， 83、 卡扣， 84、 限位凸台。
【具体实施方式】
下面结合附图和较佳的实施例对本发明作进一步说明。
实施例一
如图 2所示为本发明的实施例一， 背光模组包括： 背板 10、 固置于背板 10 内的反射片 41、 置于反射片 41之上的导光板 40、 置于导光板 40之上的光学膜 片 30; 其中， 导光板 40及其之下的反射片 41 , 其之上的光学膜片 30由一限位 构件 80进行限位。
图 3所示， 限位构件 80包括一横向限位部 81 , 结合图 2所示， 横向限位部 81的内侧面为一平面， 其形成一限位平面直接氏紧在所述导光板 40的边侧（与 导光板的出光面垂直的边缘处的侧面）上， 该限位平面与导光板 40的边侧面接 触， 这样可以避免限位构件 40对导光板 40的边侧的压强过大； 而横向限位部 81另一侧直接紧靠着背板 10的侧壁 11上， 利用限位构件 80填充了背板 10的 侧壁 11到导光板 40的边侧的空隙， 从而实现利用限位构件 80对导光板 40的 横向限位， 这样， 也就不需要在背板 10上铆接一个固定的铆柱来实现对导光板 40的横向限位。
如图 2中所示， 限位构件 80还取代了如图 1所示的中框 60对导光板 40的 竖向限位的作用， 如图 3中所示， 限位构件 80还包括一竖向限位部 82, 竖向限 位部 82设置在导光板 40的出光面之上， 也就是光学膜片 30之上， 再配合背板 10的底部实现对导光板 40的竖向限位功能， 优选的， 该竖向限位部 82位于液 晶显示装置的非显示区内， 以避免影响到背光的亮度、 均匀度及液晶显示装置 的显示范围。
限位构件 80上设置有用于将其固定到背板 10上的固定结构。 如图 3所示， 在限位构件 80的横向限位部 81上设置有一弹性卡扣 83 , 返回图 2, 我们可以 看到， 在背板 10的侧壁 11上设置有一"" ^孔， 限位构件 80上的弹性卡扣 83卡 入所述卡孔内实现固定， 提高限位构件 80的限位可靠性。
如图中所示， 限位构件 80为一 L形板状件， 所述横向限位部 81与所述竖 向限位部 82相互垂直并连接形成所述 L形板状件。 而卡扣 83则直接在横向限 位部 81上沖压成型， 这样的结构使其制造工艺筒单。 对于本实施例来说， 限位 构件 80可以选用塑胶材料制成， 塑胶材料成型方便， 价格便宜且弹性好； 也可 以选用钣金件加工形， 而钣金件的加工也较为方便。
如图 2所示可以看出， 限位构件 80的安装可以是直接压入导光板 40与背 板 10的侧壁 11之间的间隙中， 在压入后卡扣 83卡入侧壁 11的卡孔内， 其安 装十分筒单。
如图 4所示为本申请人曾在申请号为 13376657的 US专利申请中提出减小 导光板被铆柱撞裂的方案， 在该方案中， 通过在导光板 40的边缘设置凸台， 再 在凸台上设置凹槽 42 ( a、 b、 c、 d、 e ), 导光板 40通过设置在凹槽 42处的铆 柱来实现其横向限位， 在背景技术中已经提到， 使用铆柱容易造成导光板 40的 损伤， 对于使用铆柱还有另外一缺点， 由于铆柱的存在会使得液晶显示装置的 画面对应于铆柱的位置附近容易出现亮点， 尤其是在边框较窄的液晶显示装置 中更容易出现该现象。 而对于本实施例来说， 由于取消了铆柱的限位方式， 改 用面接触的限位构件 80, 如图 5所示， 其不需要在导光板 40上裁切凹槽， 使得 导光板 40为一个完整的方形结构， 其边缘处平整无其他突变结构， 从而使得液 晶显示装置的画面边缘的光学品味得以提高， 降低了出现亮点的现象。
实施例二
如图 6及图 7所示， 与实施例一不同的是， 在限位构件 80的竖向限位部 82 之上还设置有一限位凸台 84,该限位凸台 84用于限制如图 6中所示的液晶显示 装置中液晶面板 50的边侧， 即用于对液晶面板 50的横向限位， 同时， 竖向限 位部 82也可以直接用于承载液晶面板 50 (即液晶面板 50设置子所述竖向限位 部之上）， 这样一来， 限位构件 80完全取代了如图 1所示的中框 60的功能， 因 而在本实施例中， 取消了中框这一组件， 筒化了液晶显示装置的结构， 同时， 使得液晶显示装置的边框变得更窄。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明， 不 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说， 在不脱离本发明构思的前提下， 还可以做出若干筒单推演或替 换， 都应当视为属于本发明的保护范围。

Claims

权利要求
1、 一种背光模组， 包括： 背板、 设置在背板内的导光板， 以及一用于对所 述导光板限位的限位构件； 所述导光板为方形结构， 其边侧平整无其他突变结 构； 所述限位构件包括一横向限位部以及一竖向限位部， 所述横向限位部具有 一限位平面， 所述横向限位部的限位平面抵紧在所述导光板的边侧， 并且其另 一侧紧靠着所述背板的侧壁； 所述竖向限位部压紧在所述导光板的出光面之上； 所述限位构件的横向限位部相对于所述背板侧壁一侧的弹性卡扣， 所述背板的 侧壁上设置有卡孔， 所述限位构件通过其上的弹性卡扣卡入所述背板上的卡孔 实现固定。
2、 一种背光模组， 包括： 背板以及设置在背板内的导光板， 还包括一用于 对所述导光板限位的限位构件， 所述限位构件包括一横向限位部， 所述横向限 位部抵紧在所述导光板的边侧并紧靠着所述背板的侧壁。
3、 如权利要求 2所述的一种背光模组， 其中， 所述导光板为方形结构， 其 边侧平整无其他突变结构； 所述横向限位部具有一限位平面， 所述限位平面与 所述导光板的边侧之间面接触。
4、 如权利要求 3所述的一种背光模组， 其中， 所述限位构件还包括一竖向 限位部， 所述竖向限位部压紧在所述导光板的出光面之上。
5、 如权利要求 2所述的一种背光模组， 其中， 所述限位构件还包括一竖向 限位部， 所述竖向限位部压紧在所述导光板的出光面之上。
6、 如权利要求 5所述的一种背光模组， 其中， 所述限位构件的竖向限位部 之上还设置有一用于限制液晶显示装置的液晶面板的横向位置的限位凸台， 所 述竖向限位部用于承载所述液晶面板， 所述限位凸台用于对所述液晶面板的边 缘进行限位。
7、 如权利要求 2所述的一种背光模组， 其中， 所述限位构件设置有用于将 其固定到所述背板上的固定结构。
8、 如权利要求 7所述的一种背光模组， 其中， 所述固定结构为设置在所述 限位构件的横向限位部相对于所述背板侧壁一侧的弹性卡扣， 所述背板的侧壁 上设置有卡孔， 所述限位构件通过其上的弹性卡扣卡入所述背板上的卡孔实现 固定。
9、 如权利要求 8所述的一种背光模组， 其中， 所述限位构件为一 L形板状 件， 所述横向限位部与所述竖向限位部相互垂直并连接形成所述 L形板状件。
10、 如权利要求 9所述的一种背光模组， 其中， 所述卡扣为在所述板状的 横向限位部直接成型。
11、 如权利要求 2 所述的一种背光模组， 其中， 所述限位构件为塑胶材料 制成。
12、 一种液晶显示装置， 包括： 背板以及设置在背板内的导光板， 还包括 一用于对所述导光板限位的限位构件， 所述限位构件包括一横向限位部， 所述 横向限位部抵紧在所述导光板的边侧并紧靠着所述背板的侧壁。
13、 如权利要求 12所述的一种背光模组， 其中， 所述导光板为方形结构， 其边侧平整无其他突变结构； 所述横向限位部具有一限位平面， 所述限位平面 与所述导光板的边侧之间面接触。
14、 如权利要求 13所述的一种背光模组， 其中， 所述限位构件还包括一竖 向限位部， 所述竖向限位部压紧在所述导光板的出光面之上。
15、 如权利要求 14所述的一种背光模组， 其中， 所述限位构件的竖向限位 部之上还设置有一用于限制液晶显示装置的液晶面板的横向位置的限位凸台， 所述液晶面板设置于所述竖向限位部之上， 所述液晶面板的边侧由所述限位凸 台限位。
16、 如权利要求 12所述的一种背光模组， 其中， 所述限位构件设置有用于 将其固定到所述背板上的固定结构。
17、 如权利要求 16所述的一种背光模组， 其中， 所述固定结构为设置在所 述限位构件的横向限位部相对于所述背板侧壁一侧的弹性卡扣， 所述背板的侧 壁上设置有卡孔， 所述限位构件通过其上的弹性卡扣卡入所述背板上的卡孔实 现固定。
18、 如权利要求 17所述的一种背光模组， 其中， 所述限位构件为一 L形板 状件， 所述横向限位部与所述竖向限位部相互垂直并连接形成所述 L形板状件。
19、 如权利要求 18所述的一种背光模组， 其中， 所述卡扣为在所述板状的 横向限位部直接成型。
20、 如权利要求 12所述的一种背光模组， 其中， 所述限位构件为塑胶材料 制成。
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Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
CN103592795A (zh) * 2013-11-15 2014-02-19 深圳市华星光电技术有限公司 背光模组及用该背光模组的液晶显示装置
CN104360541B (zh) * 2014-12-03 2017-09-29 京东方科技集团股份有限公司 一种导光板、背光模组、液晶显示模组和液晶显示装置
CN105988235A (zh) * 2015-02-27 2016-10-05 苏州璨宇光学有限公司 显示模块
CN104728683B (zh) * 2015-04-14 2017-11-14 京东方科技集团股份有限公司 一种一体式背光源结构及液晶显示装置
CN108594503A (zh) * 2015-06-29 2018-09-28 青岛海信电器股份有限公司 一种显示装置和用于显示装置的胶框与背板
CN108761912A (zh) * 2018-05-31 2018-11-06 江苏聚泰科技有限公司 一种防震背光模组
CN109375311B (zh) * 2018-12-26 2020-07-31 厦门天马微电子有限公司 一种导光板、导光板的制造方法及背光模组和显示装置
CN114935848B (zh) * 2022-06-28 2023-09-15 合肥京东方光电科技有限公司 一种显示模组及显示装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201156135Y (zh) * 2008-02-01 2008-11-26 姜苓秀 液晶屏背光板用卡扣
US20090091688A1 (en) * 2007-10-04 2009-04-09 Funai Electric Co., Ltd. Liquid crystal module
JP2009229965A (ja) * 2008-03-25 2009-10-08 Epson Imaging Devices Corp 電気光学装置および電子機器
CN102003661A (zh) * 2010-11-03 2011-04-06 深圳市华星光电技术有限公司 侧入式背光模块及液晶显示器
CN102043276A (zh) * 2009-10-22 2011-05-04 京东方科技集团股份有限公司 液晶显示器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871596A (zh) * 2009-04-23 2010-10-27 友达光电股份有限公司 背光模组和液晶显示装置
TWI459091B (zh) * 2011-08-16 2014-11-01 Au Optronics Corp 背光模組及使用其之顯示裝置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090091688A1 (en) * 2007-10-04 2009-04-09 Funai Electric Co., Ltd. Liquid crystal module
CN201156135Y (zh) * 2008-02-01 2008-11-26 姜苓秀 液晶屏背光板用卡扣
JP2009229965A (ja) * 2008-03-25 2009-10-08 Epson Imaging Devices Corp 電気光学装置および電子機器
CN102043276A (zh) * 2009-10-22 2011-05-04 京东方科技集团股份有限公司 液晶显示器
CN102003661A (zh) * 2010-11-03 2011-04-06 深圳市华星光电技术有限公司 侧入式背光模块及液晶显示器

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