TWI769914B - Backlight module - Google Patents

Backlight module Download PDF

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Publication number
TWI769914B
TWI769914B TW110131293A TW110131293A TWI769914B TW I769914 B TWI769914 B TW I769914B TW 110131293 A TW110131293 A TW 110131293A TW 110131293 A TW110131293 A TW 110131293A TW I769914 B TWI769914 B TW I769914B
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TW
Taiwan
Prior art keywords
extension
backlight module
bending
main body
light guide
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TW110131293A
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Chinese (zh)
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TW202309438A (en
Inventor
陳煒杰
連志賢
張宇
Original Assignee
大陸商業成科技（成都）有限公司
大陸商業成光電（深圳）有限公司
英特盛科技股份有限公司
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Publication of TW202309438A publication Critical patent/TW202309438A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Planar Illumination Modules (AREA)

Abstract

Disclosed is a backlight module. The backlight module includes a base, a reflective sheet, a light guide plate, and an optical laminate. The base includes a first main body portion, a first bending portion, and a second bending portion. The reflective sheet is disposed on the first body portion. The light guide plate is disposed on the reflective sheet. The light guide plate includes a second body portion, a first buckle portion, and a second buckle portion. The optical laminate is disposed on the second body portion, having a protruding portion that exceeds the second main body portion. The first bending portion is sandwiched between the protruding portion and the first buckle portion. The second bending portion is sandwiched between the protruding portion and the second buckle portion.

Description

背光模組Backlight Module

本發明係有關於一種背光模組，尤其係有關於一種背光模組之導光板固定結構。 The invention relates to a backlight module, in particular to a light guide plate fixing structure of the backlight module.

一般而言，在顯示裝置中，背光模組的功能在於提供均勻的光源。然而，背光模組之導光板(light guide film,LGF)在組裝過程中，若導光板位置產生偏移，則導光板與LED燈管之間會產生過大且不均一的間距，將影響終端顯示裝置之顯示區(或稱可視區)面內的輝度表現。例如，在圖1A中，背光模組100之導光板20組裝後產生逆時鐘方向偏移，因此與LED燈管10產生不均一的間距，且最大間距d1大於0.15mm。另外，在圖1B中，背光模組100之導光板20組裝後則是產生順時鐘方向偏移，因此與LED燈管10亦產生不均一的間距，且最大間距d2大於0.15mm。因著導光板20與LED燈管10之間產生過大且不均一的間距，造成邊緣暗帶問題，最終影響顯示裝置整體輝度的均勻性。 Generally speaking, in a display device, the function of the backlight module is to provide a uniform light source. However, during the assembly process of the light guide film (LGF) of the backlight module, if the position of the light guide plate is shifted, there will be an excessive and non-uniform spacing between the light guide plate and the LED tube, which will affect the display of the terminal. In-plane luminance performance of the display area (or viewable area) of the device. For example, in FIG. 1A , the light guide plate 20 of the backlight module 100 is offset in the counterclockwise direction after being assembled, so that the distance between the light guide plate 20 and the LED tube 10 is not uniform, and the maximum distance d1 is greater than 0.15 mm. In addition, in FIG. 1B , the light guide plate 20 of the backlight module 100 is offset in the clockwise direction after being assembled, so there is an uneven distance with the LED tube 10 , and the maximum distance d2 is greater than 0.15mm. Due to the excessively large and non-uniform spacing between the light guide plate 20 and the LED tube 10 , a dark band problem on the edge is caused, which ultimately affects the overall luminance uniformity of the display device.

另外，一般在組裝導光板時，通常會利用導光板固定膠帶(LGF fixing tape)來固定導光板。如圖2所示，背光模組200具有一顯示區I以及一非顯示區II，結構上主要包含一底座210、一反射膜220、一導光板230、一下擴散片240a、一垂直稜鏡片240b、一水平稜鏡片240c、一上擴散片240d、一導光板固定膠帶 250、一鋁框260、一膠框270a、一膠框270b以及一雙面膠280。通常，為了將導光板230固定於底座210上，反射膜220會自顯示區I邊緣向內退一距離D，亦即在此約1.06mm之距離D所涵蓋的區域內不形成反射膜220，並會以導光板固定膠帶250將導光板230與底座210貼附在一起，藉此固定導光板230。然而，在距離D所涵蓋的區域內，由於沒有反射膜220，再加上底座210表面較粗糙的緣故，會讓此區域輝度呈現偏暗的情況。 In addition, when assembling the light guide plate, a light guide plate fixing tape (LGF fixing tape) is usually used to fix the light guide plate. As shown in FIG. 2, the backlight module 200 has a display area I and a non-display area II, and the structure mainly includes a base 210, a reflective film 220, a light guide plate 230, a lower diffuser 240a, and a vertical fin 240b , a horizontal plate 240c, an upper diffuser 240d, a light guide plate fixing tape 250 , an aluminum frame 260 , a plastic frame 270 a , a plastic frame 270 b and a double-sided adhesive tape 280 . Usually, in order to fix the light guide plate 230 on the base 210, the reflective film 220 is retreated from the edge of the display area I by a distance D, that is, the reflective film 220 is not formed in the area covered by the distance D of about 1.06 mm, and The light guide plate 230 and the base 210 are attached together with the light guide plate fixing tape 250 , thereby fixing the light guide plate 230 . However, in the area covered by the distance D, since there is no reflective film 220 and the surface of the base 210 is relatively rough, the brightness of this area will appear dark.

因此，如何提升背光模組之導光板的組裝精度，進而改善顯示裝置邊緣輝度偏暗的問題，乃是業界所需思考的重要課題。 Therefore, how to improve the assembly precision of the light guide plate of the backlight module, so as to improve the edge brightness of the display device, is an important issue that the industry needs to consider.

鑑於上述內容，本揭露之一態樣係提供一種背光模組，包含：一底座，具有一第一主體部、一第一彎折部以及一第二彎折部；一反射片，位於所述第一主體部上；一導光板，位於所述反射片上，其中所述導光板具有一第二主體部、一第一卡扣部以及一第二卡扣部；以及一光學疊層，位於所述第二主體部上，並具有超出所述第二主體部的一突出部；其中，所述第一彎折部夾置於所述突出部與所述第一卡扣部之間，而所述第二彎折部夾置於所述突出部與所述第二卡扣部之間。 In view of the above, one aspect of the present disclosure provides a backlight module, comprising: a base having a first main body part, a first bending part and a second bending part; a reflection sheet located on the on the first main body part; a light guide plate located on the reflection sheet, wherein the light guide plate has a second main body part, a first buckle part and a second buckle part; and an optical stack located on the The second main body part has a protruding part beyond the second main body part; wherein, the first bending part is sandwiched between the protruding part and the first buckle part, and the The second bending portion is sandwiched between the protruding portion and the second locking portion.

根據本揭露之一個或多個實施方式，其中所述第一卡扣部以及所述第二卡扣部皆是自所述第二主體部之下半部向外突出的部份，且分別位於所述第二主體部之一長邊上的兩端。 According to one or more embodiments of the present disclosure, both the first latching portion and the second latching portion are portions protruding outward from the lower half of the second main body portion, and are respectively located at two ends on one long side of the second main body part.

根據本揭露之一個或多個實施方式，其中所述第一彎折部具有一第一延伸部、一第二延伸部以及一第三延伸部；所述第二彎折部具有一第四延伸部、一第五延伸部以及一第六延伸部。 According to one or more embodiments of the present disclosure, the first bending part has a first extension part, a second extension part and a third extension part; the second bending part has a fourth extension part, a fifth extension part and a sixth extension part.

根據本揭露之一個或多個實施方式，其中所述第一延伸部與所述第一主體部之間具有一銳角；所述第一延伸部與所述第二延伸部之間具有一鈍角；所述第二延伸部與所述第三延伸部之間具有一鈍角。 According to one or more embodiments of the present disclosure, an acute angle is formed between the first extension portion and the first main body portion; an obtuse angle is formed between the first extension portion and the second extension portion; An obtuse angle is formed between the second extension portion and the third extension portion.

根據本揭露之一個或多個實施方式，其中所述第四延伸部與所述第一主體部之間具有一銳角；所述第四延伸部與所述第五延伸部之間具有一鈍角；所述第五延伸部與所述第六延伸部之間具有一鈍角。 According to one or more embodiments of the present disclosure, an acute angle is formed between the fourth extension portion and the first main body portion; an obtuse angle is formed between the fourth extension portion and the fifth extension portion; An obtuse angle is formed between the fifth extension portion and the sixth extension portion.

根據本揭露之一個或多個實施方式，其中所述第二延伸部與所述第三延伸部構成一第一彈性片；所述第五延伸部與所述第六延伸部構成一第二彈性片。 According to one or more embodiments of the present disclosure, the second extension portion and the third extension portion constitute a first elastic piece; the fifth extension portion and the sixth extension portion constitute a second elastic piece piece.

根據本揭露之一個或多個實施方式，其中所述背光模組具有一顯示區，而所述反射片佔滿所述顯示區。 According to one or more embodiments of the present disclosure, the backlight module has a display area, and the reflective sheet fills the display area.

根據本揭露之一個或多個實施方式，其中所述背光模組更具有一非顯示區，而所述第一卡扣部、所述第二卡扣部、所述第一彎折部、所述第二彎折部以及所述突出部皆位於所述非顯示區。 According to one or more embodiments of the present disclosure, the backlight module further has a non-display area, and the first buckle portion, the second buckle portion, the first bending portion, the Both the second bending portion and the protruding portion are located in the non-display area.

根據本揭露之一個或多個實施方式，其中所述光學疊層由上而下依序包含一上擴散片、一水平稜鏡片、一垂直稜鏡片、一下擴散片。 According to one or more embodiments of the present disclosure, the optical stack includes an upper diffusion sheet, a horizontal aperture sheet, a vertical aperture sheet, and a lower diffusion sheet in sequence from top to bottom.

根據本揭露之一個或多個實施方式，其中所述導光板與一LED燈管具有一均一間距，且所述間距不大於0.15mm。 According to one or more embodiments of the present disclosure, the light guide plate and an LED tube have a uniform distance, and the distance is not greater than 0.15 mm.

10:LED燈管 10: LED tube

20:導光板 20: light guide plate

100:背光模組 100: Backlight module

200:背光模組 200: Backlight module

210:底座 210: Base

220:反射膜 220: Reflective film

230:導光板 230: light guide plate

240a:下擴散片 240a: Lower diffuser

240b:垂直稜鏡片 240b: Vertical slats

240c:水平稜鏡片 240c:Horizontal Pills

240d:上擴散片 240d: Upper diffuser

250:導光板固定膠帶 250: light guide plate fixing tape

260:鋁框 260: Aluminum frame

270a:膠框 270a: plastic frame

270b:膠框 270b: plastic frame

280:雙面膠 280: Double-sided tape

300:背光模組 300: Backlight module

410:底座 410: Base

410a:第一主體部 410a: First main body

410b:第一延伸部 410b: first extension

410c:第二延伸部 410c: Second extension

410d、1410d、2410d、3410d:第三延伸部 410d, 1410d, 2410d, 3410d: third extension

420:反射片 420: Reflector

430:導光板 430: light guide plate

430a:第二主體部 430a: Second main body

430b:第一卡扣部 430b: The first buckle part

440:光學疊層 440: Optical Lamination

440a:下擴散片 440a: Lower diffuser

440b:垂直稜鏡片 440b:Vertical Pills

440c:水平稜鏡片 440c:Horizontal Pills

440d:上擴散片 440d: Upper diffuser

460:鋁框 460: Aluminum frame

470a:膠框 470a: plastic frame

470b:膠框 470b: plastic frame

480:雙面膠 480: Double-sided tape

490:LED燈管 490: LED tube

4100:第一彎折部 4100: The first bending part

A-A:剖面線 A-A: Hatch line

B、C:區域 B, C: area

d1、d2、d3:間距 d1, d2, d3: spacing

D:距離 D: distance

E:突出部 E: Protrusion

I:顯示區 I: Display area

II:非顯示區 II: Non-display area

為讓本發明的上述與其他目的、特徵、優點與實施例能更淺顯易懂，所附圖式之說明如下：圖1A係繪示先前技術之背光模組的示意圖。 In order to make the above and other objects, features, advantages and embodiments of the present invention more easily understood, the accompanying drawings are described as follows: FIG. 1A is a schematic diagram of a backlight module of the prior art.

圖1B係繪示先前技術之背光模組的示意圖。 FIG. 1B is a schematic diagram illustrating a backlight module of the prior art.

圖2係繪示先前技術之背光模組的剖面圖。 FIG. 2 is a cross-sectional view of a backlight module of the prior art.

圖3A係繪示本發明一實施例之背光模組的俯視圖。 FIG. 3A is a top view of a backlight module according to an embodiment of the present invention.

圖3B~圖3E係繪示圖3A之區域B內背光模組的局部放大立體圖。 3B to 3E are partial enlarged perspective views of the backlight module in the area B of FIG. 3A .

圖4係繪示沿著圖3A之A-A剖面線的背光模組剖面圖。 FIG. 4 is a cross-sectional view of the backlight module along the section line A-A of FIG. 3A .

圖5係繪示本發明一實施例之背光模組的示意圖。 FIG. 5 is a schematic diagram illustrating a backlight module according to an embodiment of the present invention.

根據慣常的作業方式，圖中各種特徵與元件並未依實際比例繪製，其繪製方式是為了以最佳的方式呈現與本發明相關的具體特徵與元件。此外，在不同圖式間，以相同或相似的元件符號指稱相似的元件及部件。 In accordance with common practice, the various features and elements in the drawings are not drawn to scale, but are drawn in order to best represent specific features and elements relevant to the present invention. Furthermore, the same or similar reference numerals are used to refer to similar elements and parts among the different figures.

為便貴審查委員能對本發明之目的、形狀、構造裝置特徵及其功效，做更進一步之認識與瞭解，茲舉實施例配合圖式，詳細說明如下。 In order to facilitate your reviewers to have a further understanding and understanding of the purpose, shape, structure and device features of the present invention and their effects, the following examples are given in conjunction with the drawings.

以下揭露提供不同的實施例或示例，以建置所提供之標的物的不同特徵。以下敘述之成分以及排列方式的特定示例是為了簡化本公開，目的不在於構成限制；元件的尺寸和形狀亦不被揭露之範圍或數值所限制，但可以取決於元件之製程條件或所需的特性。例如，利用剖面圖描述本發明的技術特徵，這些剖面圖是理想化的實施例示意圖。因而，由於製造工藝和/公差而導致圖示之形狀不同是可以預見的，不應為此而限定。 The following disclosure provides different embodiments or examples for implementing different features of the provided subject matter. The specific examples of components and arrangements described below are for the purpose of simplifying the present disclosure and are not intended to be limiting; the size and shape of the elements are not limited by the disclosed ranges or values, but may depend on the processing conditions of the elements or the desired characteristic. For example, technical features of the invention are described using cross-sectional illustrations that are schematic illustrations of idealized embodiments. Thus, variations in the shapes of the illustrations due to manufacturing processes and/or tolerances are foreseeable and should not be limited thereto.

再者，空間相對性用語，例如「下方」、「在...之下」、「低於」、「在...之上」以及「高於」等，是為了易於描述圖式中所繪示的元素或特徵之間的關係；此外，空間相對用語除了圖示中所描繪的方向，還包含元件在使用或操作時的不同方向。 Furthermore, spatially relative terms, such as "below", "below", "below", "above", and "above", etc., are used to facilitate the description of The relationship between elements or features of the drawings; further, spatially relative terms encompass different orientations of elements in use or operation in addition to the orientation depicted in the drawings.

以下，搭配圖式說明本發明之實施例。首先要說明的是，為了提高背光模組之導光板的組裝精度，避免影響顯示裝置之顯示區面內的輝度表現。因此，本發明之實施例在導光板設計了卡扣部，並在M底座(M-Chassis)尾端製作勾型彈片結構，然後藉由M底座尾端的勾型彈片結構抵住導光板的卡扣部，可以將導光板穩定地固定在預定位置，提高組裝精度。如此一來，即不需要使用導光板固定膠帶來固定導光板，並可以將反射片延伸至原來導光板固定膠帶所在區域，進而改善顯示裝置邊緣輝度偏暗的問題。 Hereinafter, the embodiments of the present invention will be described with reference to the drawings. First of all, it should be noted that, in order to improve the assembly precision of the light guide plate of the backlight module, and avoid affecting the luminance performance in the display area of the display device. Therefore, in the embodiment of the present invention, a buckle portion is designed on the light guide plate, and a hook-shaped shrapnel structure is formed at the tail end of the M-Chassis, and then the hook-shaped shrapnel structure at the tail end of the M-Chassis is used to resist the clip of the light guide plate. The buckle part can stably fix the light guide plate in a predetermined position and improve the assembly accuracy. In this way, it is not necessary to use the light guide plate fixing tape to fix the light guide plate, and the reflective sheet can be extended to the area where the light guide plate fixing tape was originally located, thereby improving the problem that the edge brightness of the display device is dim.

首先，請一併參考圖3A與圖3B，圖3A係繪示本發明一實施例之背光模組的俯視圖。圖3B係繪示圖3A之區域B內背光模組的局部放大立體圖。 First, please refer to FIG. 3A and FIG. 3B together. FIG. 3A is a top view of a backlight module according to an embodiment of the present invention. FIG. 3B is a partial enlarged perspective view of the backlight module in the area B of FIG. 3A .

如圖3A所示，在此實施例中，背光模組300其中一長邊的兩端即標號B、C所指兩區域，均增設勾型彈片結構，並在導光板前端加上卡扣部，以便有效地將導光板固定於LED入光側以及反射片上，而達到亮度均勻的效果。以下，在說明書後續內容中，亦會用「第一彎折部」、「第二彎折部」等名稱來描述勾型彈片結構。 As shown in FIG. 3A , in this embodiment, two ends of one of the long sides of the backlight module 300 , namely the two regions denoted by labels B and C, are additionally provided with hook-shaped elastic structures, and a buckle portion is added at the front end of the light guide plate. , in order to effectively fix the light guide plate on the light-incident side of the LED and the reflective sheet, so as to achieve the effect of uniform brightness. Hereinafter, in the subsequent contents of the specification, names such as "first bent portion" and "second bent portion" will also be used to describe the hook-shaped elastic piece structure.

如圖3B所示，藉由在背光模組300之標號B所指區域，以位於第一彎折部4100之末端的第三延伸部410d與導光板之第一卡扣部430b卡合(請參考圖4)。稍後，將以圖4所示之剖面圖，進一步描述圖3B之背光模組300的其餘元件。另外，要特別說明的是，在背光模組300之標號C所指區域內的結構，基本上與標號B所指區域內的結構係互相對稱，因此相同元件或相似元件可以參考後續圖4的相關說明。另外，在其他實施例中，第一卡扣部430b與第三延伸部410d接觸的 表面可以進一步設計成粗糙面，增加彼此間的磨擦力，避免第三延伸部410d滑動，提高固定效果。在其他實施例中，第三延伸部410d可進一步替換為橡膠材質，增加摩擦力，提高固定效果。另外，如圖3C、圖3D、圖3E所示，在其他實施例中，第三延伸部410d與第一卡扣部430b接觸的末端在形狀上有不同的設計，以便能更有效地頂住第一卡扣部430b的切角，增強第三延伸部410d與第一卡扣部430b之間的推壓力量，提高固定效果。例如，如圖3C所示，第三延伸部1410d近末端處上表面被削薄而形成一切面；如圖3D所示，第三延伸部2410d近末端處上下表面皆被削薄而各形成一切面；如圖3E所示，第三延伸部3410d近末端處下表面被削薄而形成一切面。如圖3C、圖3D、圖3E所示，第三延伸部1410d、2410d、3410d末端各自形成一漸縮部份，即不同的尖頭狀，可以更有效地頂住第一卡扣部430b的切角，提高固定效果。需特別說明的是，上述的任一可行實施例是可以組合的，例如可以在圖3C的實施例中，於第三延伸部表面形成橡膠的防滑面或是表面形成粗糙的表面等等。 As shown in FIG. 3B , in the area indicated by the symbol B of the backlight module 300 , the third extension portion 410d located at the end of the first bending portion 4100 is engaged with the first locking portion 430b of the light guide plate (please Refer to Figure 4). Later, the remaining elements of the backlight module 300 of FIG. 3B will be further described with reference to the cross-sectional view shown in FIG. 4 . In addition, it should be noted that the structure in the area indicated by the symbol C of the backlight module 300 is basically symmetrical with the structure in the area indicated by the symbol B. Therefore, the same or similar components can refer to the following FIG. 4 . related instructions. In addition, in other embodiments, the first snap portion 430b is in contact with the third extension portion 410d The surfaces can be further designed as rough surfaces to increase the friction between each other, avoid sliding of the third extension portion 410d, and improve the fixing effect. In other embodiments, the third extension portion 410d can be further replaced with a rubber material to increase the friction force and improve the fixing effect. In addition, as shown in FIG. 3C , FIG. 3D and FIG. 3E , in other embodiments, the end of the third extension portion 410d in contact with the first buckle portion 430b has a different design in shape, so as to be able to withstand more effectively The cut angle of the first buckle portion 430b enhances the amount of pushing force between the third extension portion 410d and the first buckle portion 430b, thereby improving the fixing effect. For example, as shown in FIG. 3C , the upper surface of the third extension portion 1410d near the end is thinned to form a cut surface; as shown in FIG. 3D , the upper and lower surfaces of the third extension portion 2410d near the end are thinned to form a cut surface. As shown in FIG. 3E , the lower surface of the third extension portion 3410d near the end is thinned to form a cut surface. As shown in FIG. 3C , FIG. 3D , and FIG. 3E , the ends of the third extending portions 1410d , 2410d , and 3410d are each formed with a tapered portion, that is, a different prong shape, which can more effectively withstand the first locking portion 430b Cut corners to improve fixation. It should be noted that any of the above-mentioned possible embodiments can be combined. For example, in the embodiment of FIG. 3C , a rubber anti-slip surface or a rough surface can be formed on the surface of the third extension portion.

接著，請參考圖4，圖4係繪示沿著圖3A之A-A剖面線的背光模組剖面圖。如圖4所示，背光模組300包含一底座410、一反射片420、一導光板430、一光學疊層440、一鋁框460、一膠框470a、一膠框470b以及一雙面膠480。 Next, please refer to FIG. 4 , which is a cross-sectional view of the backlight module along the section line A-A of FIG. 3A . As shown in FIG. 4 , the backlight module 300 includes a base 410 , a reflection sheet 420 , a light guide plate 430 , an optical stack 440 , an aluminum frame 460 , a plastic frame 470 a , a plastic frame 470 b and a double-sided tape 480.

如圖4所示，背光模組300具有一顯示區I以及一非顯示區II。底座410具有一第一主體部410a、一第一彎折部4100以及一第二彎折部。然而，由於圖4繪示的是圖3A之標號B所指區域這一側的剖面圖，因此看不見位於相對側的第二彎折部，不過可以透過圖3A來說明。如圖3A所示，所述第二彎折部係與第一彎折部4100對稱，且位於標號C所指區域。也就是說，所述第二彎折部與第一彎折部4100乃是彼此獨立位於第一主體部410a之長度方向的兩端，即分別是標號C與標號B所指區域。在此實施例中，底座410是面狀的M底座，材料例如是鐵 等金屬材料。在此實施例中，第二彎折部與第一彎折部4100的構造、材料是相同的，差異僅在於彼此位於第一主體部410a之不同處。 As shown in FIG. 4 , the backlight module 300 has a display area I and a non-display area II. The base 410 has a first main body portion 410a, a first bending portion 4100 and a second bending portion. However, since FIG. 4 shows a cross-sectional view of the side of the region indicated by the symbol B in FIG. 3A , the second bent portion on the opposite side cannot be seen, but it can be explained with reference to FIG. 3A . As shown in FIG. 3A , the second bending portion is symmetrical with the first bending portion 4100 and is located in the area indicated by the symbol C. As shown in FIG. That is to say, the second bending portion and the first bending portion 4100 are located at both ends of the length direction of the first main body portion 410a independently of each other, that is, the regions indicated by the symbols C and B, respectively. In this embodiment, the base 410 is a planar M base, and the material is, for example, iron and other metal materials. In this embodiment, the structures and materials of the second bending portion and the first bending portion 4100 are the same, and the only difference is that they are located at the different places of the first main body portion 410a.

另外，如圖4所示，反射片420位於第一主體部410a上。在此實施例中，反射片420佔滿顯示區I，也就是說，反射片420較圖2之反射膜220延伸了一距離D至顯示區I的邊緣。換句話說，在本發明之實施例中，並不需要以犧牲顯示區I邊緣之部分面積的方式來固定導光板，因此，可以讓反射片420佔滿顯示區I，提升顯示區I邊緣之輝度。 In addition, as shown in FIG. 4, the reflection sheet 420 is located on the first main body portion 410a. In this embodiment, the reflection sheet 420 fills the display area I, that is, the reflection sheet 420 extends a distance D from the reflection film 220 in FIG. 2 to the edge of the display area I. In other words, in the embodiment of the present invention, it is not necessary to fix the light guide plate by sacrificing part of the area of the edge of the display area I. Therefore, the reflective sheet 420 can fill the display area I and raise the edge of the display area I. Brightness.

另外，如圖4所示，導光板430位於反射片420上，其中導光板430具有一第二主體部430a、一第一卡扣部430b以及一第二卡扣部。然而，由於圖4繪示的是圖3A之標號B所指區域這一側的剖面圖，因此看不見位於相對側的第二卡扣部，所以再次以圖3A來說明。如圖3A所示，所述第二卡扣部係與第一卡扣部430b對稱，且位於標號C所指區域。也就是說，所述第二卡扣部與第一卡扣部430b乃是彼此獨立位於第二主體部430a之長度方向的兩端，即分別是標號C與標號B所指區域。而且，第一卡扣部430b的位置與第一彎折部4100對應，所述第二卡扣部的位置與所述第二彎折部對應。如前所述，所述第二卡扣部與所述第二彎折部位於標號C之區域內，而標號C與標號指區域內的結構彼此對稱，且功能也相同，皆用於精確地固定導光板430。因此，後續在此說明書中，係以標號B所指區域這一側的第一卡扣部430b與第一彎折部4100為例，說明本發明之實施例用於固定導光板430的結構。 In addition, as shown in FIG. 4 , the light guide plate 430 is located on the reflection sheet 420 , wherein the light guide plate 430 has a second main body portion 430 a , a first buckle portion 430 b and a second buckle portion. However, since FIG. 4 shows a cross-sectional view of the side of the area indicated by the symbol B in FIG. 3A , the second latching portion on the opposite side cannot be seen, so it will be described again with FIG. 3A . As shown in FIG. 3A , the second buckle portion is symmetrical with the first buckle portion 430b, and is located in the area indicated by the symbol C. As shown in FIG. That is to say, the second locking portion and the first locking portion 430b are located at both ends of the longitudinal direction of the second main body portion 430a independently of each other, ie, the regions indicated by the symbols C and B, respectively. Moreover, the position of the first buckle portion 430b corresponds to the first bending portion 4100, and the position of the second buckle portion corresponds to the second bending portion. As mentioned above, the second buckling portion and the second bending portion are located in the area marked C, and the structures in the area marked C and the mark refer to each other and have the same functions. The light guide plate 430 is fixed. Therefore, in the following description, the first buckling portion 430b and the first bending portion 4100 on the side of the area indicated by the symbol B are taken as examples to illustrate the structure of the embodiment of the present invention for fixing the light guide plate 430 .

如圖4所示，光學疊層440係位於第二主體部430a上，並具有超出第二主體部430a的一突出部。在此，所述突出部乃是指光學疊層440超出顯示區I且由標號E所指的部份。從圖4來看，標號E所指的突出部與下方的第一卡扣部430b之間形成一容置空間，以便收容第一彎折部4100之末端部份。也就是說，第一彎折部4100夾置於標號E所指的突出部與第一卡扣部430b之間。同樣地，如圖 3A所示，在標號C所指區域內，標號E所指的突出部與下方的第二卡扣部之間形成另一容置空間，以便收容第二彎折部之末端部份。也就是說，所述第二彎折部會夾置於標號E所指的突出部與所述第二卡扣部之間。 As shown in FIG. 4 , the optical stack 440 is located on the second body portion 430a and has a protruding portion beyond the second body portion 430a. Here, the protruding portion refers to the portion of the optical stack 440 that extends beyond the display area I and is denoted by the symbol E. As seen from FIG. 4 , an accommodating space is formed between the protruding portion denoted by the symbol E and the first buckling portion 430 b below, so as to accommodate the end portion of the first bending portion 4100 . That is to say, the first bending portion 4100 is sandwiched between the protruding portion indicated by the symbol E and the first locking portion 430b. Similarly, as shown in Fig. As shown in 3A, in the area denoted by C, another accommodating space is formed between the protruding portion denoted by E and the second buckle portion below, so as to accommodate the end portion of the second bending portion. That is, the second bending portion is sandwiched between the protruding portion denoted by the symbol E and the second locking portion.

請再參考圖4，進一步而言，第一彎折部4100具有自第一主體部410a連續延伸之一第一延伸部410b、一第二延伸部410c以及一第三延伸部410d。另外，第一延伸部410b與第一主體部410a之間具有一銳角；第一延伸部410b與第二延伸部410c之間具有一鈍角；第二延伸部410c與第三延伸部410d之間具有一鈍角。在此實施例中，第一彎折部4100係具有彈性的片狀結構，藉由第一延伸部410b、一第二延伸部410c以及一第三延伸部410d彼此間角度的設計，而形成的第一彎折部4100即前述所謂的勾型彈片結構。在此實施例中，第一延伸部410b、第二延伸部410c以及第三延伸部410d係與第一主體部410a為一體成型的結構。在其他實施例中，第二延伸部410c以及第三延伸部410d構成一具有彈性的片狀結構，而此彈性的片狀結構與第一延伸部410b以及第一主體部410a非一體成型的結構。 Referring to FIG. 4 again, further, the first bending portion 4100 has a first extending portion 410b, a second extending portion 410c and a third extending portion 410d extending continuously from the first main body portion 410a. In addition, an acute angle is formed between the first extension portion 410b and the first main body portion 410a; an obtuse angle is formed between the first extension portion 410b and the second extension portion 410c; and an obtuse angle is formed between the second extension portion 410c and the third extension portion 410d an obtuse angle. In this embodiment, the first bending portion 4100 has an elastic sheet-like structure, which is formed by designing the angles of the first extension portion 410b, the second extension portion 410c and the third extension portion 410d. The first bending portion 4100 is the aforementioned so-called hook-shaped elastic piece structure. In this embodiment, the first extension portion 410b, the second extension portion 410c and the third extension portion 410d are integrally formed with the first main body portion 410a. In other embodiments, the second extending portion 410c and the third extending portion 410d form an elastic sheet-like structure, and the elastic sheet-like structure is not integrally formed with the first extending portion 410b and the first main body portion 410a .

同樣地，如圖3A所示，在標號C所指區域內，第二彎折部也是具有三個延伸部，分別是自第一主體部410a連續延伸之一第四延伸部、一第五延伸部以及一第六延伸部。同樣地，所述第四延伸部與第一主體部410a之間具有一銳角；第四延伸部與第五延伸部之間具有一鈍角；第五延伸部與第六延伸部之間具有一鈍角。在此實施例中，第二彎折部也是具有彈性的片狀結構，藉由所述第四延伸部、所述第五延伸部以及所述第六延伸部彼此間角度的設計，形成的第二彎折部即前述所謂的勾型彈片結構。在此實施例中，所述第四延伸部、所述第五延伸部以及所述第六延伸部係與第一主體部410a為一體成型的結構。在其他實施例中，所述第五延伸部以及所述第六延伸部構成一具有彈性的片狀結構，而此彈性的片狀結構與所述第四延伸部以及第一主體部410a非一體成型的結構。 Similarly, as shown in FIG. 3A , in the area indicated by the symbol C, the second bending portion also has three extending portions, which are a fourth extending portion and a fifth extending portion extending continuously from the first main body portion 410 a respectively. part and a sixth extension part. Similarly, there is an acute angle between the fourth extension part and the first main body part 410a; an obtuse angle between the fourth extension part and the fifth extension part; and an obtuse angle between the fifth extension part and the sixth extension part . In this embodiment, the second bending portion is also an elastic sheet-like structure, and the fourth extension portion, the fifth extension portion and the sixth extension portion are formed by designing the angles of the fourth extension portion, the fifth extension portion and the sixth extension portion. The two bending parts are the so-called hook-shaped elastic piece structure mentioned above. In this embodiment, the fourth extension portion, the fifth extension portion and the sixth extension portion are integrally formed with the first main body portion 410a. In other embodiments, the fifth extension portion and the sixth extension portion form an elastic sheet-like structure, and the elastic sheet-like structure is not integral with the fourth extension portion and the first main body portion 410a Formed structure.

請再參考圖3A、圖4，導光板430之第一卡扣部430b以及所述第二卡扣部皆是自第二主體部430a之下半部向外突出的部份，且分別位於第二主體部430a之一長邊上的兩端即標號B、C所指區域。因為第一卡扣部430b以及所述第二卡扣部皆是形成在第二主體部430a之下半部，故可以和上方之光學疊層440的突出部(即標號E所指處)分別形成相對應的容置空間，以分別容置第一彎折部4100之第三延伸部410d、所述第二彎折部之第六延伸部。藉由本發明之實施例這樣的導光板卡扣設計，可以有效地固定導光板的位置。因此，原本導光板下方相當於距離D之寬度的區域，需要利用導光板固定膠帶與底座410之第一主體部410a貼合，但是因著本發明實施例的上述導光板卡扣設計而可以省略。如此一來，如圖4所示，本發明之實施例可以將反射片420往顯示區I之邊緣延伸一距離D，進而改善顯示裝置邊緣輝度偏暗的問題。 Please refer to FIG. 3A and FIG. 4 again, the first locking portion 430b and the second locking portion of the light guide plate 430 are both parts protruding outward from the lower half of the second main body portion 430a, and are respectively located in the second locking portion 430b. The two ends of one of the long sides of the two main portions 430a are the regions denoted by the symbols B and C. Because both the first snap portion 430b and the second snap portion are formed on the lower half of the second main body portion 430a, they can be separated from the protruding portion of the optical stack 440 above (ie, the place indicated by the symbol E). Corresponding accommodating spaces are formed to accommodate the third extending portion 410d of the first bending portion 4100 and the sixth extending portion of the second bending portion, respectively. With the buckle design of the light guide plate in the embodiment of the present invention, the position of the light guide plate can be effectively fixed. Therefore, originally, the area under the light guide plate corresponding to the width of the distance D needs to be attached to the first main body portion 410a of the base 410 with the light guide plate fixing tape. Omit. In this way, as shown in FIG. 4 , in the embodiment of the present invention, the reflective sheet 420 can be extended to the edge of the display area I by a distance D, thereby improving the problem that the edge brightness of the display device is dark.

另外，請再參考圖4，在本發明之實施例中，第一卡扣部430b、所述第二卡扣部、第一彎折部4100、所述第二彎折部以及標號E所指之突出部所構成的卡扣結構，皆位於非顯示區II。因此，既不會佔用顯示區I，又可以達到固定導光板430，進而解決先前技術中因導光板易偏移所導致顯示裝置顯示區面內輝度低下的問題。 In addition, please refer to FIG. 4 again, in the embodiment of the present invention, the first buckle portion 430b, the second buckle portion, the first bending portion 4100, the second bending portion and the reference numeral E refer to The buckle structures formed by the protrusions are all located in the non-display area II. Therefore, the light guide plate 430 can be fixed without occupying the display area I, thereby solving the problem of low in-plane brightness in the display area of the display device caused by the easy displacement of the light guide plate in the prior art.

另外，如圖4所示，光學疊層440由上而下依序包含一上擴散片440d、一水平稜鏡片440c、一垂直稜鏡片440b、一下擴散片440a。鋁框460內部可容置底座410、反射片420、導光板430以及光學疊層440。第一彎折部4100與所述第二彎折部皆有一部份位於鋁框460，而另一部份位於膠框470a。另外，膠框470a上配置有雙面膠480。另外，膠框470b則緊鄰膠框470a配置。 In addition, as shown in FIG. 4 , the optical stack 440 includes an upper diffusion sheet 440d, a horizontal aperture sheet 440c, a vertical aperture sheet 440b, and a lower diffusion sheet 440a in sequence from top to bottom. The inside of the aluminum frame 460 can accommodate the base 410 , the reflection sheet 420 , the light guide plate 430 and the optical stack 440 . A part of the first bending part 4100 and the second bending part is located in the aluminum frame 460, and the other part is located in the plastic frame 470a. In addition, the double-sided adhesive tape 480 is disposed on the adhesive frame 470a. In addition, the plastic frame 470b is disposed adjacent to the plastic frame 470a.

接下來，請參考圖5，圖5係繪示本發明一實施例之背光模組的示意圖。如圖5所示，由於本發明之實施例採用上述導光板卡扣設計，可以有效地固定導光板430的位置，因此導光板430與一LED燈管490之間具有一均一間距， 且所述間距不大於0.15mm。如此一來，不會有先前技術中顯示裝置顯示區面內輝度低下、不均或者邊緣暗帶的問題。 Next, please refer to FIG. 5 , which is a schematic diagram of a backlight module according to an embodiment of the present invention. As shown in FIG. 5 , since the above-mentioned light guide plate buckle design is adopted in the embodiment of the present invention, the position of the light guide plate 430 can be effectively fixed, so there is a uniform distance between the light guide plate 430 and an LED tube 490 . And the distance is not more than 0.15mm. In this way, there will be no problems of low in-plane luminance, unevenness, or dark bands on the edge of the display area of the display device in the prior art.

綜上所述，在本發明之實施例中，藉由在導光板設計了卡扣部，且在M底座尾端製作勾型彈片結構，然後使勾型彈片結構抵住導光板的卡扣部，而提高導光板的組裝精度，避免導光板發生偏移。藉此，即不需要使用導光板固定膠帶來固定導光板，而可以將反射片延伸覆蓋原來導光板固定膠帶所在區域，提升顯示裝置邊緣的輝度品質。再者，在本發明之實施例中，第一彎折部4100、所述第二彎折部嵌於內部結構中，除了可以增加整體的接合穩定度，降低整體產品的厚度外，也使顯示裝置具有更均勻的輝度表現。 To sum up, in the embodiment of the present invention, the light guide plate is designed with a buckle portion, and a hook-shaped spring structure is formed at the end of the M base, and then the hook-shaped spring structure is pressed against the buckle portion of the light guide plate. , and improve the assembly accuracy of the light guide plate to avoid the light guide plate from shifting. In this way, it is not necessary to use the light guide plate fixing tape to fix the light guide plate, and the reflective sheet can be extended to cover the area where the light guide plate fixing tape is originally located, so as to improve the brightness quality of the edge of the display device. Furthermore, in the embodiment of the present invention, the first bending portion 4100 and the second bending portion are embedded in the internal structure, which can not only increase the overall joint stability and reduce the thickness of the overall product, but also enable the display The device has a more uniform luminance performance.

以上實施方式僅用以說明本發明的技術方案而非限制，儘管參照較佳實施方式對本發明進行了詳細說明，本領域的普通技術人員應當理解，可以對本發明的技術方案進行修改或等同替換，而不脫離本發明技術方案的精神和範圍。 The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solutions of the present invention.

300:背光模組 300: Backlight module

410:底座 410: Base

410a:第一主體部 410a: First main body

410b:第一延伸部 410b: first extension

410c:第二延伸部 410c: Second extension

410d:第三延伸部 410d: Third extension

420:反射片 420: Reflector

430:導光板 430: light guide plate

430a:第二主體部 430a: Second main body

430b:第一卡扣部 430b: The first buckle part

440:光學疊層 440: Optical Lamination

440a:下擴散片 440a: Lower diffuser

440b:垂直稜鏡片 440b:Vertical Pills

440c:水平稜鏡片 440c:Horizontal Pills

440d:上擴散片 440d: Upper diffuser

460:鋁框 460: Aluminum frame

470a:膠框 470a: plastic frame

470b:膠框 470b: plastic frame

480:雙面膠 480: Double-sided tape

4100:第一彎折部 4100: The first bending part

D:距離 D: distance

E:突出部 E: Protrusion

I:顯示區 I: Display area

II:非顯示區 II: Non-display area

Claims (10)

一種背光模組，包含： 一底座，具有一第一主體部、一第一彎折部以及一第二彎折部； 一反射片，位於該第一主體部上﹔ 一導光板，位於該反射片上，其中該導光板具有一第二主體部、一第一卡扣部以及一第二卡扣部；以及 一光學疊層，位於該第二主體部上，並具有超出該第二主體部的一突出部； 其中，該第一彎折部夾置於該突出部與該第一卡扣部之間，而該第二彎折部夾置於該突出部與該第二卡扣部之間。 A backlight module, comprising: a base having a first main body part, a first bending part and a second bending part; a reflective sheet located on the first main body part; a light guide plate located on the reflection sheet, wherein the light guide plate has a second main body part, a first buckle part and a second buckle part; and an optical stack located on the second body portion and having a protruding portion beyond the second body portion; Wherein, the first bending portion is sandwiched between the protruding portion and the first locking portion, and the second bending portion is sandwiched between the protruding portion and the second locking portion. 如請求項1所述之背光模組，其中該第一卡扣部以及該第二卡扣部皆是自該第二主體部之下半部向外突出的部份，且分別位於該第二主體部之一長邊上的兩端。The backlight module of claim 1, wherein the first snap portion and the second snap portion are both protruding portions from the lower half of the second main body portion, and are located at the second both ends on one of the long sides of the main body. 如請求項1所述之背光模組，其中該第一彎折部具有自該第一主體部連續延伸之一第一延伸部、一第二延伸部以及一第三延伸部；該第二彎折部具有自該第一主體部連續延伸之一第四延伸部、一第五延伸部以及一第六延伸部。The backlight module of claim 1, wherein the first bending portion has a first extending portion, a second extending portion and a third extending portion extending continuously from the first main body portion; the second bending portion The folding part has a fourth extension part, a fifth extension part and a sixth extension part extending continuously from the first main body part. 如請求項3所述之背光模組，其中該第一延伸部與該第一主體部之間具有一銳角；該第一延伸部與該第二延伸部之間具有一鈍角；該第二延伸部與該第三延伸部之間具有一鈍角；該第四延伸部與該第一主體部之間具有一銳角；該第四延伸部與該第五延伸部之間具有一鈍角；該第五延伸部與該第六延伸部之間具有一鈍角。The backlight module of claim 3, wherein an acute angle is formed between the first extension portion and the first main body portion; an obtuse angle is formed between the first extension portion and the second extension portion; the second extension There is an obtuse angle between the fourth extension part and the third extension part; an acute angle between the fourth extension part and the first main body part; an obtuse angle between the fourth extension part and the fifth extension part; the fifth extension part There is an obtuse angle between the extension portion and the sixth extension portion. 如請求項3所述之背光模組，其中該第一彎折部以及該第二彎折部係具有彈性的片狀結構。The backlight module of claim 3, wherein the first bending portion and the second bending portion have elastic sheet-like structures. 如請求項1所述之背光模組，其中該背光模組具有一顯示區，而該反射片佔滿該顯示區。The backlight module of claim 1, wherein the backlight module has a display area, and the reflective sheet fills the display area. 如請求項6所述之背光模組，其中該背光模組更具有一非顯示區，而該第一卡扣部、該第二卡扣部、該第一彎折部、該第二彎折部以及該突出部皆位於該非顯示區。The backlight module of claim 6, wherein the backlight module further has a non-display area, and the first buckle portion, the second buckle portion, the first bending portion, and the second bending portion Both the portion and the protruding portion are located in the non-display area. 如請求項1所述之背光模組，其中該第一卡扣部與該第一彎折部接觸之表面，以及該第二卡扣部與該第二彎折部接觸之表面係粗糙表面。The backlight module of claim 1, wherein a surface of the first buckle portion in contact with the first bending portion, and a surface of the second buckle portion in contact with the second bending portion are rough surfaces. 如請求項3所述之背光模組，其中該第三延伸部以及該第六延伸部係由一橡膠材料構成。The backlight module of claim 3, wherein the third extension portion and the sixth extension portion are formed of a rubber material. 如請求項3所述之背光模組，其中該第三延伸部以及該第六延伸部在末端皆形成一漸縮部份。The backlight module of claim 3, wherein the third extension portion and the sixth extension portion both form a tapered portion at the end.
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