WO2023103172A1 - 背光模组及显示装置 - Google Patents

背光模组及显示装置 Download PDF

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Publication number
WO2023103172A1
WO2023103172A1 PCT/CN2022/074833 CN2022074833W WO2023103172A1 WO 2023103172 A1 WO2023103172 A1 WO 2023103172A1 CN 2022074833 W CN2022074833 W CN 2022074833W WO 2023103172 A1 WO2023103172 A1 WO 2023103172A1
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WO
WIPO (PCT)
Prior art keywords
backlight module
optical unit
extension
limiting portion
limiting
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PCT/CN2022/074833
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English (en)
French (fr)
Inventor
曾景禾
曾雅麟
钟汉强
张育玮
李俊贤
Original Assignee
瑞仪光电(苏州)有限公司
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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Application filed by 瑞仪光电(苏州)有限公司 filed Critical 瑞仪光电(苏州)有限公司
Priority to CN202280003174.6A priority Critical patent/CN116710837A/zh
Publication of WO2023103172A1 publication Critical patent/WO2023103172A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • 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

Definitions

  • the invention relates to a backlight module, in particular to a backlight module which integrates a mechanism component for limiting a reflector into a frame structure, and a display device using the backlight module.
  • the backlight module of the liquid crystal display device has a reflective sheet for reflecting light.
  • the conventional assembly method of the backlight module is to stick the reflective sheet to the back panel with double-sided adhesive tape, or to limit the reflective sheet with other mechanical components other than the frame structure such as the plastic frame and the back cover.
  • the conventional assembly method it is necessary to open a mold of the mechanical component in advance to manufacture the mechanical component; then, it is necessary to fix the reflection sheet by assembling the mechanical component with the double-sided adhesive.
  • the conventional assembly method requires mold opening of the mechanical parts, which will cause additional production cost problems.
  • the conventional assembly method not only takes a long time to assemble, but also after challenging tests, the gap between the reflective sheet and the backplane is easily caused by double-sided The viscosity of the glue weakens, causing the reflective sheet to warp and not fit properly, resulting in poor optical quality.
  • the purpose of the present invention is to provide a backlight module, which can have a frame structure integrated with mechanical components for limiting the reflection sheet.
  • Another object of the present invention is to provide a display device, which may have the above-mentioned backlight module.
  • the present invention provides a backlight module, comprising: an optical unit; a frame structure, which has a back plate for carrying the optical unit, and an outer frame combined with the back plate, the outer frame has a side surrounding the optical unit In the wall segment, the side wall segment is provided with at least one first limiting portion extending toward one side of the optical unit; and the reflector, which has a second limiting portion, and the second limiting portion is not covered by the optical unit, wherein the outer The first limiting part of the frame limits the second limiting part of the reflective sheet.
  • the present invention also provides a display device, comprising: the aforementioned backlight module; and a display panel, which is located on the light-emitting side of the backlight module, wherein the outer frame of the frame structure also includes a bearing section, and the bearing section is from the side wall section to the optical panel. The direction of the unit extends, and the display panel is arranged on the carrying section.
  • the back plate includes a body part for carrying the optical unit, and at least one extension part extending from one end of the body part toward one side of the optical unit, the extension part and the side wall segment overlap each other, and the extension part has At least one first perforation, the first limiting portion passes through the second limiting portion of the corresponding first perforation to press the reflective sheet, so as to jointly press the reflective sheet with the main body of the back plate.
  • the backplane includes a body portion for carrying the optical unit, and an extension portion located at one end of the body portion extending toward one side of the optical unit, the extension portion has at least one first through hole, the reflection sheet includes a base portion and is formed by The base part extends along the inner side of the extension part, the second limiting part is at least one second through hole, the side part, the extending part and the side wall segment overlap each other, and the first limiting part sequentially passes through the corresponding first A perforation and a second perforation.
  • the end of the first limiting portion forms a hook portion.
  • the second perforation is provided between the base and the side.
  • the second through hole is provided on the side.
  • the length of the first limiting portion is greater than the sum of the thickness of the side portion of the reflective sheet, the thickness of the extension portion, and the gap.
  • the optical unit further includes a light-emitting mechanism and at least one optical film, the reflective sheet abuts the light-emitting mechanism, and the light-emitting mechanism is located between the back plate and the at least one optical film.
  • the optical unit further includes a light guide plate, the light guide plate is located between the reflection sheet and at least one optical film, and the light-emitting mechanism is arranged on the light-incident side of the light guide plate, and the first limiting part is arranged on a side of the frame structure. Corresponds to one side of the light emitting mechanism.
  • the length of the carrying section is greater than the length of the first limiting portion.
  • the backlight module and the display device of the present invention have the following characteristics: the first limiting part can be partially extended from the outer frame, and the first limiting part can press the second limiting part of the reflective sheet. In this way, the backlight module and display device of the present invention can reduce the number of tapes or other parts used to bond and fix the reflective sheet, thereby reducing the man-hours of traditional production and assembly steps such as pasting or flattening the reflective sheet.
  • the structural design of the first limiting part partially extended from the outer frame and the back plate to jointly press the reflective sheet can simplify the assembly process, thereby saving the cost of tape usage, increasing the production line production efficiency, saving the cost of the joint parts of the outer frame and the back plate, As well as reducing the manpower, material resources and time costs required in the backlight module assembly process, even in the future when heavy industry needs are encountered, since the reflector is only limited by the first limit part, there will be no double-sided adhesive Therefore, the backlight module and the display device of the present invention also have the effects of high module combination stability and high reworkability.
  • FIG. 1 is a partial sectional view of a backlight module according to a first embodiment of the present invention
  • FIG. 2 is a partial cross-sectional view of a backlight module according to a second embodiment of the present invention.
  • FIG. 3 is a partial sectional view of a backlight module according to a third embodiment of the present invention.
  • FIG. 4 is an enlarged partial cross-sectional view of a backlight module according to a fourth embodiment of the present invention.
  • FIG. 5 is a partial perspective view of a backlight module according to a fourth embodiment of the present invention.
  • FIG. 6 is a partially sectional enlarged view of a display device of the present invention.
  • FIG. 7 is a cross-sectional view of a backlight module using side-lit lighting according to the present invention.
  • FIG. 1 it shows the first embodiment of the backlight module of the present invention, which includes: an optical unit 1, a frame structure 2 and a reflection sheet 3, the frame structure 2 is used to carry the optical unit 1, and the reflection sheet 3 is in contact with the The frame structure 2 and the part of the reflective sheet 3 not covered by the optical unit 1 can be limited by the frame structure 2 .
  • the backlight module of the present invention can be divided into a direct type backlight module and an edge type backlight module.
  • the direct type backlight module is taken as an example for illustration.
  • the optical unit 1 includes a light emitting mechanism 11 and at least one optical film 12 .
  • the light emitting mechanism 11 is located behind the at least one optical film 12 .
  • the frame structure 2 includes a back plate 21 and an outer frame 22, wherein the back plate 21 is used to carry the optical unit 1, and the outer frame 22 is combined with the back plate 21.
  • the outer frame 22 is arranged on the edge of the back plate 21.
  • the backboard 21 is made of metal material
  • the outer frame 22 is made of plastic material (PVC).
  • the outer frame 22 includes a side wall section 221, the side wall section 221 surrounds the optical unit 1, and is provided with at least one first limiting portion 222 extending toward the side of the optical unit 1.
  • the first The limiting portion 222 is a rod extending along the first axis A1, but not limited thereto.
  • the reflective sheet 3 includes a second limiting portion L.
  • the second limiting portion L of the reflective sheet 3 is a part of the reflective sheet 3 not covered by the optical unit 1, and the second limiting portion of the reflective sheet 3 L can be suppressed by the first limiting portion 222 of the outer frame 22 .
  • the first limiting portion 222 presses the second limiting portion L along the second axis A2
  • the second axis A2 is a direction in which the reflective sheet 3 faces the back plate 21 .
  • the reflection sheet 3 of the backlight module of the present invention can be pressed by the first limiting portion 222, that is, it can be bonded and fixed to the back plate 21 without using adhesive tape (such as double-sided adhesive tape), thereby saving the amount of adhesive tape Cost, and at the same time reduce the man-hours of traditional production assembly steps such as pasting or flattening reflectors, so as to increase the production efficiency of the production line.
  • adhesive tape such as double-sided adhesive tape
  • the first limiting portion 222 is partially extended from the outer frame 22 , the cost of combining the outer frame 22 and the back plate 21 can be saved. Moreover, the structural design of the first limiting portion 222 of the outer frame 22 and the back plate 21 to jointly press the reflective sheet 3 can simplify the assembly process, thereby reducing the manpower required for the manufacturing and assembling process of the backlight module. material and time costs.
  • backboard 21 comprises main body part 211 and at least one extension part 212, and extension part 212 is positioned at one end of main body part 211, and toward One side of the optical unit 1 extends.
  • the extension portion 212 of the back plate 21 has at least one first through hole 213, and the first limiting portion 222 of the outer frame 22 passes through the corresponding first through hole 213 of the back plate 21 to press the second limiting portion of the reflective sheet 3 L, to press the reflective sheet 3 together with the main body portion 211 of the back plate 21 . Therefore, this embodiment can be applied to the implementation of the backplane with the extension. Moreover, because the hole diameter of the first through hole 213 can be designed to be larger than the thickness of the reflective sheet 3, when the first stopper 222 passes through the corresponding first through hole 213 of the back plate 21, it can be adjusted in the first through hole 213. The height is suitable for reflective sheets 3 of various thicknesses.
  • the back plate 21 includes a main body portion 211 and at least one extension portion 212.
  • the extension portion 212 is located at one end of the body portion 211 and extends toward one side of the optical unit 1 .
  • the extension portion 212 of the back panel 21 and the side wall section 221 of the outer frame 22 overlap each other, and the extension portion 212 of the back panel 21 has at least one first through hole 213 .
  • the reflective sheet 3 includes a base portion 31 and a side portion 32, and the side portion 32 extends from the base portion 31 along the inner side of the extension portion 212 of the back plate 21, so that light can be uniformly reflected by the base portion 31 and the side portion 32 of the reflective sheet 3 .
  • the side portion 32 , the extension portion 212 and the side wall segment 221 overlap each other along the first axis A1 .
  • the second limiting portion L of the reflective sheet 3 is at least one second through hole 321, wherein the second through hole 321 can preferably be set between the base portion 31 and the side portion 32, so that the outer frame 22
  • the first limiting portion 222 passes through the corresponding first through hole 213 of the back plate 21 and the second through hole 321 of the reflective sheet 3 in order to be pressed to the base 31 of the reflective sheet 3 , thereby effectively restricting the position of the reflective sheet 3 .
  • this embodiment can be applied to the implementation of the backplane with the extension and the reflection sheet with the side.
  • the adjustment margin is sufficient to accommodate thermal expansion and contraction space of the reflective sheet 3 along the first axis A1.
  • the length of the first limiting portion 222 is greater than the sum of the thickness of the side portion 32 , the thickness of the extension portion 212 and the gap G, so as to ensure that the end of the first limiting portion 222 is effectively pressed against the base portion 31 of the reflective sheet 3 .
  • the margin between the assembly of the reflective sheet 3 and the backplane 21 can be reserved, and it can be ensured that there is enough room for thermal expansion and contraction between the reflective sheet 3 and the backplane 21 after the challenge test In order to avoid the risk that the reflective sheet 3 will wrinkle (waving) and reduce the optical quality.
  • the end of the first limiting part 222 can also form a hook 223 , the extension direction of the hook portion 223 is different from the direction of the first axis A1.
  • the second limiting portion L of the reflective sheet 3 is at least one second through hole 321, wherein the second through hole 321 can preferably be set between the base portion 31 and the side portion 32, so that the outer frame 22
  • the first limiting portion 222 passes through the corresponding first through hole 213 of the back plate 21 and the second through hole 321 of the reflective sheet 3 in sequence, not only the side portion 32 of the reflective sheet 3 can be reliably limited by the hook portion 223
  • the base portion 31 of the reflective sheet 3 can also be pressed simultaneously to reach a position where the reflective sheet 3 can be effectively restricted.
  • the end of the first limiting portion 222 may extend in a direction different from the first axial direction A1 to form the hook portion 223 , but it is not limited thereto.
  • the hook portion 223 extends along the second axis A2 relative to the front direction of the optical unit 1 .
  • the end of the first limiting portion 222 may also face toward the rear of the optical unit 1 , or toward the sky side or the ground side of the outer frame 22 .
  • the second through hole 321 of the reflective sheet 3 can also be arranged on the side portion 32, and the hook portion 223 can also limit the side portion 32 of the reflective sheet 3 between the hook portion 223 and the side portion 32. Between the backboards 21 , it is easier to insert the second through hole 321 of the reflective sheet 3 into the hook portion 223 in the assembly process.
  • this embodiment also has a combination of modules. High stability and reworkability.
  • FIG. 7 shows a preferred embodiment of the display device of the present invention, including: the aforementioned backlight module and a display panel 4 , and the display panel 4 is located on the light emitting side of the backlight module.
  • the outer frame 22 of the frame structure 2 may also include a bearing section 224, and the bearing section 224 extends from the side wall section 221 toward the direction of the optical unit 1.
  • the display panel 4 is disposed on the supporting section 224 . It is worth mentioning that the length of the carrying section 224 is greater than the length of the first limiting portion 222 .
  • the outer frame 22 can be directly used as an appearance part of the display device, and can cover the first limiting part 222 located below, thereby achieving the effect of greatly reducing the overall volume of the display device.
  • it can also reduce the cost of additional appearance parts Assembly time, so as to achieve the effects of reducing the number of parts, reducing the assembly time of parts, and reducing costs.
  • FIG. 7 takes a side-entry backlight module as an example.
  • the optical unit 1 may also include a light guide plate 13, which is located between the reflector 3 and at least one optical film 12.
  • the light incident surface is provided, and the reflective sheet 3 is in contact with the light guide plate 13 of the light emitting mechanism 11 .
  • the light emitting mechanism 11 is a light bar disposed between the light guide plate 13 and the frame structure 2 , and the aforementioned first limiting portion 222 is preferably disposed on the non-light-incident side of the side-type backlight module. Therefore, this embodiment can be applied to the implementation of the side-lit backlight module.
  • the backlight module and the display device of the present invention can partially extend the first limiting portion from the outer frame, and make the first limiting portion press the second limiting portion of the reflective sheet. In this way, the backlight module and display device of the present invention can reduce the number of tapes or other parts used to bond and fix the reflective sheet, thereby reducing the man-hours of traditional production and assembly steps such as pasting or flattening the reflective sheet.
  • the structural design of the first limit part partially extended from the outer frame and the back plate to jointly press the reflective sheet can simplify the assembly process, thereby saving the cost of tape usage, increasing the production efficiency of the production line, and saving the cost of the joint parts of the outer frame and the back plate , and reduce the manpower, material resources and time costs required in the backlight module assembly process, and even meet the heavy industry requirements in the future. Since the reflector is only limited by the first limit part, there will be no double-sided Due to the difficulty of rework or the problem of rework loss caused by glue sticking, the backlight module and display device of the present invention also have the effects of high module combination stability and reworkability.
  • A1 first axis
  • A2 Second axis.

Abstract

一种背光模组，包含：光学单元(1)；框架结构(2)，其具有用以承载光学单元(1)的背板(21)，以及结合于背板(21)的外框(22)，外框(22)具有环绕光学单元(1)的侧墙段(221)，侧墙段(221)设有朝光学单元(1)一侧延伸的至少一个第一限位部(222)；及反射片(3)，其具有第二限位部(L)，第二限位部(L)未被光学单元(1)所覆盖，其中，外框(22)的第一限位部(222)限制反射片(3)的第二限位部(L)。还提供包含背光模组的显示装置。

Description

背光模组及显示装置 技术领域
本发明涉及背光模组，特别是涉及一种将用以限位反射片的机构件整合至框架结构的背光模组，以及应用该背光模组的显示装置。
背景技术
液晶显示装置，作为电子装置的显示部件，目前已广泛应用于各种电子产品中。液晶显示装置的背光模组具有反射片，反射片用以反射光线。背光模组的习知组装方式，是通过双面胶将反射片黏贴于背板，或者通过胶框、背盖等框架结构之外的其他机构件对反射片进行限位。
然而，习知组装方式，需要先行开设机构件的模具，以生产制造机构件；接着，需要通过将机构件与双面胶组装来固定反射片。如此，习知组装方式具有对机构件开模的需求，这会产生额外生产成本问题，此外习知组装方式不仅组装工时长，而且经过挑战测试后，反射片与背板之间容易因为双面胶的黏性减弱而使反射片发生翘曲、不服贴，而导致发生光学品味变差的情形。
鉴于此，有必要提供一种背光模组，以解决上述的问题。
发明内容
本发明的目的在于提供一种背光模组，其可以具有整合了用以限位反射片的机构件的框架结构。
本发明的另一目的在于提供一种显示装置，其可以具有上述的背光模组。
为了达成上述目的，本发明提供一种背光模组，包含：光学单元；框架结构，其具有用以承载光学单元的背板，以及结合于背板的外框，外框具有环绕光学单元的侧墙段，侧墙段设有朝光学单元一侧延伸的至少一个 第一限位部；及反射片，其具有第二限位部，第二限位部未被光学单元所覆盖，其中，外框的第一限位部限制反射片的第二限位部。
本发明还提供一种显示装置，包含：前述的背光模组；及显示面板，其位于背光模组的出光侧，其中，框架结构的外框还包含承载段，承载段由侧墙段朝光学单元的方向延伸，显示面板设置于承载段上。
在一些实施例中，背板包含用以承载光学单元的本体部，以及位于本体部的一端朝光学单元的一侧延伸的至少一个延伸部，延伸部与侧墙段互相叠置，延伸部具有至少一个第一穿孔，第一限位部穿过相对应的第一穿孔压制反射片的第二限位部，以与背板的本体部共同压制反射片。
在一些实施例中，背板包含用以承载光学单元的本体部，以及位于本体部的一端朝光学单元的一侧延伸的延伸部，延伸部具有至少一个第一穿孔，反射片包含基部以及由基部沿着延伸部的内侧延伸的侧部，第二限位部为至少一个第二穿孔，侧部、延伸部及侧墙段互相叠置，第一限位部依序穿过相对应的第一穿孔及第二穿孔。
在一些实施例中，第一限位部的末端形成勾部。
在一些实施例中，第二穿孔设于基部与侧部之间。
在一些实施例中，第二穿孔设于侧部上。
在一些实施例中，反射片的侧部与延伸部之间具有间隙，间隙用以作为反射片的侧部与延伸部之间的调整裕度。
在一些实施例中，第一限位部的长度大于反射片的侧部的厚度、延伸部的厚度与间隙的总和。
在一些实施例中，光学单元还包含发光机构及至少一个光学膜片，反射片抵接发光机构，发光机构位于背板与至少一个光学膜片之间。
在一些实施例中，光学单元还包含导光板，导光板位于反射片与至少一个光学膜片之间，且发光机构设置于导光板的入光侧面，第一限位部设置于框架结构的非对应于发光机构的一侧。
在一些实施例中，承载段的长度大于第一限位部的长度。
本发明的背光模组及显示装置具有下列特点：可以由外框局部延伸出第一限位部，并使第一限位部压制反射片的第二限位部。如此，本发明的 背光模组及显示装置，可以减少用以黏接固定反射片的胶带或其他部材的数量，进而减少黏贴或压平反射片等传统生产组装步骤的工时，并且通过利用由外框局部延伸出的第一限位部与背板共同压制反射片的结构设计，可以简化组装程序，从而达到节省胶带用量成本、增加产线生产效率、节省外框与背板结合部材费用、以及减少背光模组组装过程中所需耗费的人力、物力及时间成本等功效，甚至日后遇到重工需求，由于反射片仅经由第一限位部限位，故不会产生因双面胶黏贴而导致的重工困难、或重工耗损的问题，因此本发明的背光模组及显示装置还具有模组结合稳定性与重工性高的功效。
附图说明
为了更完整地了解实施例及其优点，现在参照附图做出下列描述，其中：
图1为本发明第一实施例的背光模组的局部剖视图；
图2为本发明第二实施例的背光模组的局部剖视图；
图3为本发明第三实施例的背光模组的局部剖视图；
图4为本发明第四实施例的背光模组的局部剖视放大图；
图5为本发明第四实施例的背光模组的局部立体图；
图6为本发明的显示装置的局部剖视放大图；以及
图7为本发明采用侧入式照光的背光模组的剖视图。
具体实施方式
现在配合附图将本发明实施例详细说明如下，其中，附图主要为简化示意图，仅以示意方式说明本发明的基本结构，因此在附图中仅标示与本发明有关的元件，且所显示的元件并非以实施时的数目、形状、尺寸比例等加以绘制，其实际实施时的规格尺寸实为一种选择性的设计，且其元件布局形态可能更为复杂。
以下参考附图对各实施例的说明，用以例示本发明可据以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」 等，仅参考附图的方向。因此，使用的方向用语用以说明及理解本申请，而非用以限制本申请。另外，在说明书中，除非明确地描述为相反的，否则词语“包含”将被理解为意指包含所述元件，但是不排除任何其它元件。
参照图1，其示出了本发明背光模组的第一实施例，其包含：光学单元1、框架结构2及反射片3，框架结构2用以承载光学单元1，反射片3抵接于框架结构2，反射片3未被光学单元1所覆盖的部分可被框架结构2所限制。
根据照明方式，本发明的背光模组可以区分为直下式背光模组与侧入式背光模组。在本实施例中，以直下式背光模组为例进行说明，光学单元1包含发光机构11及至少一个光学膜片12，发光机构11位于至少一个光学膜片12的后方。
框架结构2包含背板21及外框22，其中，背板21用以承载光学单元1，外框22结合于背板21，较佳地，外框22设置于背板21的边缘，在本实施例中，背板21由金属材质所制成，外框22由塑料材质(PVC)所制成。
具体而言，外框22包含侧墙段221，侧墙段221环绕光学单元1，并设有朝光学单元1一侧延伸的至少一个第一限位部222，在一实施例中，第一限位部222是沿第一轴向A1延伸的杆体，但并不以此为限。
反射片3包含第二限位部L，在本实施例中，反射片3的第二限位部L为反射片3未被光学单元1所覆盖的部分，反射片3的第二限位部L可被外框22的第一限位部222所压制。在本实施例中，第一限位部222沿第二轴向A2的方向压制第二限位部L，第二轴向A2为反射片3面向背板21的方向。如此一来，本发明的背光模组的反射片3能够被第一限位部222压制，即不需使用胶带(如双面胶)就可以与背板21黏接固定，从而可以节省胶带用量成本，并同时减少黏贴或压平反射片等传统生产组装步骤的工时，以增加产线的生产效率。同时，因为不需使用胶带，所以也便于重工，以降低重工的工时与部材的耗损率。
另一方面，由于第一限位部222自外框22局部地延伸，因此，可以达到节省外框22与背板21结合部材费用的功效。再且，藉由外框22的第一 限位部222与背板21共同压制反射片3的结构设计，可以达到简化组装程序，以减少背光模组在制造组装过程中所需耗费的人力、物力及时间成本等功效。
参照图2，其示出了本发明框架结构的第二实施例，在本实施例中，背板21包含本体部211及至少一个延伸部212，延伸部212位于本体部211的一端，并朝光学单元1的一侧延伸。背板21的延伸部212与外框22的侧墙段221互相叠置，由此可提升背板21与外框22的结合稳定性。其中，背板21的延伸部212具有至少一个第一穿孔213，外框22的第一限位部222穿过背板21相对应的第一穿孔213来压制反射片3的第二限位部L，以与背板21的本体部211共同压制反射片3。藉此，本实施例可以应用于具有延伸部的背板的实施态样。而且，因为第一穿孔213的孔洞口径可以设计成大于反射片3的厚度，所以第一限位部222穿过背板21相对应的第一穿孔213时，可以调整其在第一穿孔213内的高度，以适用于各种不同厚度的反射片3。
参照图3，其示出了本发明框架结构的第三实施例，相较于第一实施例而言，在本实施例中，背板21包含本体部211及至少一个延伸部212，延伸部212位于本体部211的一端，并朝光学单元1的一侧延伸。背板21的延伸部212与外框22的侧墙段221互相叠置，且背板21的延伸部212具有至少一个第一穿孔213。
反射片3包含基部31及侧部32，侧部32由基部31沿着背板21的延伸部212的内侧延伸，如此，可藉由反射片3的基部31与侧部32共同均匀地反射光线。侧部32、延伸部212及侧墙段221沿着第一轴向A1互相叠置。
在本实施例中，反射片3的第二限位部L为至少一个第二穿孔321，其中，第二穿孔321较佳地可以设于基部31与侧部32之间，如此，外框22的第一限位部222依序穿过背板21相对应的第一穿孔213及反射片3的第二穿孔321，以压制到反射片3的基部31，从而有效限制反射片3的位置。藉此，本实施例可以应用于具有延伸部的背板以及具有侧部的反射片的实施态样。
值得一提的是，侧部32与延伸部212之间可以具有间隙G，间隙G用以作为反射片3的侧部32与背板21的延伸部212之间的调整裕度，调整裕度的宽度足以容纳反射片3沿第一轴向A1的热涨冷缩空间。再且，第一限位部222的长度大于侧部32的厚度、延伸部212的厚度与间隙G的总和，以确保第一限位部222的末端有效地压制于反射片3的基部31。藉此，在本实施例中，可以保留反射片3与背板21组装之间的裕度，并确保在经过挑战测试后，反射片3与背板21之间具有足够的热涨冷缩空间，以避免发生反射片3发生皱褶(waving)而出现光学品味降低的风险。
参照图4和图5，其示出了本发明框架结构的第四实施例，相较于第三实施例而言，在本实施例中，第一限位部222的末端还可以形成勾部223，勾部223的延伸方向不同于第一轴向A1的方向。在本实施例中，反射片3的第二限位部L为至少一个第二穿孔321，其中，第二穿孔321较佳地可以设于基部31与侧部32之间，如此，外框22的第一限位部222依序穿过背板21相对应的第一穿孔213及反射片3的第二穿孔321，不仅可藉由勾部223确实地将反射片3的侧部32限制于勾部223与背板21的延伸部212之间，还可以同时压制到反射片3的基部31，达到有效限制反射片3的位置。举例而言，第一限位部222的末端可以朝不同于第一轴向A1的方向延伸，以形成勾部223，但并不以此为限。在本实施例中，勾部223为相对于光学单元1的前面方向沿第二轴向A2延伸。较佳地，第一限位部222的末端还可以朝向相对于光学单元1的后面方向，或是相对于外框22的天侧或地侧的方向。
请参照图6所示，在另一实施例中，反射片3的第二穿孔321还可以设于侧部32上，勾部223亦可将反射片3的侧部32限制于勾部223与背板21之间，由此在组装工序上较容易地将反射片3的第二穿孔321穿入勾部223中。此外，因反射片3仅经由第一限位部222的勾部223限位，如有重工需求，不会发生因黏贴所导致的重工困难或耗损问题，因此本实施例还具有模组结合稳定性与重工性高的功效。
请参照图7所示，其示出了本发明显示装置的较佳实施例，包含：前述背光模组及显示面板4，显示面板4位于背光模组的出光侧。其中，框 架结构2的外框22还可以还包含承载段224，承载段224由侧墙段221朝光学单元1的方向延伸。显示面板4设置于承载段224上。值得一提的是，承载段224的长度大于第一限位部222的长度。藉此，外框22可以直接作为显示装置的外观件，并且可遮蔽位于下方的第一限位部222，从而达成大幅减少显示装置整体体积的功效，另外，也可以减少额外加装外观件的组装时间，藉以达到减少零件数量、减少零件组装时间，降低成本等功效。
图7以侧入式背光模组为例进行说明，光学单元1还可以包含导光板13，导光板13位于反射片3与至少一个光学膜片12之间，发光机构11对位导光板13的入光面设置，反射片3抵接发光机构11的导光板13。在一实施例中，发光机构11为设置于导光板13与框架结构2之间的灯条，前述第一限位部222较佳地设置在侧入式背光模组的非入光侧。藉此，本实施例可以应用于侧入式背光模组的实施态样。
承上所述，本发明的背光模组及显示装置，可以由外框局部延伸出第一限位部，并使第一限位部压制反射片的第二限位部。如此，本发明的背光模组及显示装置，可以减少用以黏接固定反射片的胶带或其他部材的数量，进而减少黏贴或压平反射片等传统生产组装步骤的工时，并且通过利用由外框局部延伸出的第一限位部与背板共同压制反射片的结构设计，可以简化组装程序，从而达到节省胶带用量成本、增加产线生产效率、节省外框与背板的结合部材费用、以及减少背光模组组装过程中所需耗费的人力、物力及时间成本等功效，甚至日后遇到重工需求，由于反射片仅经由第一限位部来限位，故不会产生因双面胶黏贴而导致的重工困难、或重工耗损的问题，因此本发明的背光模组及显示装置还具有模组结合稳定性与重工性高的功效。
上述揭示的实施形态仅例示性说明本发明的原理、特点及其功效，并非用以限制本发明的可实施范畴，任何本领域技术人员均可在不违背本发明的精神及范畴下，对上述实施形态进行修饰与改变。任何运用本发明所揭示内容完成的等效改变及修饰，均仍应属于所附权利要求书的涵盖范围。
【附图标记列表】
1：光学单元
11：发光机构
12：光学膜片
13：导光板
2：框架结构
21：背板
211：本体部
212：延伸部
213：第一穿孔
22：外框
221：侧墙段
222：第一限位部
223：勾部
224：承载段
3：反射片
31：基部
32：侧部
321：第二穿孔
4：显示面板
G：间隙
L：第二限位部
A1：第一轴向
A2：第二轴向。

Claims (12)

  1. 一种背光模组，包含：
    光学单元；
    框架结构，其具有用以承载所述光学单元的背板，以及结合于所述背板的外框，所述外框具有环绕所述光学单元的侧墙段，所述侧墙段设有朝所述光学单元一侧延伸的至少一个第一限位部；及
    反射片，其具有第二限位部，所述第二限位部未被所述光学单元所覆盖，其中，所述外框的所述第一限位部限制所述反射片的所述第二限位部。
  2. 根据权利要求1所述的背光模组，其中，所述背板包含用以承载所述光学单元的本体部，以及位于所述本体部的一端朝所述光学单元的一侧延伸的至少一个延伸部，所述延伸部与所述侧墙段互相叠置，所述延伸部具有至少一个第一穿孔，所述第一限位部穿过相对应的所述第一穿孔压制所述反射片的所述第二限位部，以与所述背板的本体部共同压制所述反射片。
  3. 根据权利要求1所述的背光模组，其中，所述背板包含用以承载所述光学单元的本体部，以及位于所述本体部的一端朝所述光学单元的一侧延伸的延伸部，所述延伸部具有至少一个第一穿孔，所述反射片包含基部以及由所述基部沿着所述延伸部的内侧延伸的侧部，所述第二限位部为至少一个第二穿孔，所述侧部、所述延伸部及所述侧墙段互相叠置，所述第一限位部依序穿过相对应的所述第一穿孔及所述第二穿孔。
  4. 根据权利要求3所述的背光模组，其中，所述第一限位部的末端形成勾部。
  5. 根据权利要求3所述的背光模组，其中，所述第二穿孔设于所述基部与所述侧部之间。
  6. 根据权利要求3所述的背光模组，其中，所述第二穿孔设于所述侧部上。
  7. 根据权利要求3所述的背光模组，其中，所述反射片的侧部与所述延伸部之间具有间隙，所述间隙用以作为所述反射片的侧部与所述延伸部 之间的调整裕度。
  8. 根据权利要求7所述的背光模组，其中，所述第一限位部的长度大于所述反射片的侧部的厚度、所述延伸部的厚度与所述间隙的总和。
  9. 根据权利要求1所述的背光模组，其中，所述光学单元还包含发光机构及至少一个光学膜片，所述反射片抵接于所述发光机构，所述发光机构位于所述背板与所述至少一个光学膜片之间。
  10. 根据权利要求9所述的背光模组，其中，所述光学单元还包含导光板，所述导光板位于所述反射片与所述至少一个光学膜片之间，且所述发光机构设置于所述导光板的侧面，所述第一限位部设置于所述框架结构的非对应于所述发光机构的一侧。
  11. 一种显示装置，包含：
    根据权利要求1至10所述的背光模组；及
    显示面板，其位于所述背光模组的出光侧，其中，所述框架结构的外框还包含承载段，所述承载段由所述侧墙段朝所述光学单元的方向延伸，所述显示面板设置于所述承载段上。
  12. 根据权利要求11所述的显示装置，其中，所述承载段的长度大于所述第一限位部的长度。
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