TWI589962B - Direct type backlight module - Google Patents

Direct type backlight module Download PDF

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Publication number
TWI589962B
TWI589962B TW100140419A TW100140419A TWI589962B TW I589962 B TWI589962 B TW I589962B TW 100140419 A TW100140419 A TW 100140419A TW 100140419 A TW100140419 A TW 100140419A TW I589962 B TWI589962 B TW I589962B
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Taiwan
Prior art keywords
backlight module
type backlight
direct type
optical film
support structure
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TW100140419A
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Chinese (zh)
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TW201319688A (en
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李一昌
廖國翰
蔡昇穎
柯俊宇
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奇菱光電股份有限公司
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Priority to TW100140419A priority Critical patent/TWI589962B/en
Priority to CN2012103753259A priority patent/CN103090264A/en
Priority to JP2012236264A priority patent/JP5658216B2/en
Publication of TW201319688A publication Critical patent/TW201319688A/en
Priority to JP2014002580A priority patent/JP5869594B2/en
Application granted granted Critical
Publication of TWI589962B publication Critical patent/TWI589962B/en

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Description

直下式背光模組Direct type backlight module

本發明係關於一種直下式背光模組,特別是一種具有支撐結構之直下式背光模組。The invention relates to a direct type backlight module, in particular to a direct type backlight module with a support structure.

參考圖1,顯示習知直下式背光模組之剖視示意圖。該直下式背光模組1包括一背板11、複數個LED12、一擴散板13及複數個支撐柱14。該背板11具有一容置空間111。該等LED12係位於該容置空間111內。該擴散板13係位於該等LED12上方。該等支撐柱14之一端係固設於背板11上,且另一端接觸該擴散板13,用以支撐該擴散板13,以防止該擴散板13產生垂落之現象。Referring to FIG. 1, a cross-sectional view of a conventional direct type backlight module is shown. The direct type backlight module 1 includes a back plate 11 , a plurality of LEDs 12 , a diffusion plate 13 , and a plurality of support columns 14 . The backboard 11 has an accommodating space 111. The LEDs 12 are located in the accommodating space 111. The diffuser plate 13 is located above the LEDs 12. One end of the support columns 14 is fixed on the back plate 11 and the other end contacts the diffusion plate 13 for supporting the diffusion plate 13 to prevent the diffusion plate 13 from falling.

然而,該等支撐柱14雖然解決該擴散板13之垂落問題,但是由於該等支撐柱14係為實心圓柱,因而會遮住該等LED12所發出之部分光線,導致在該擴散板13之表面會產生暗紋。此外,隨著該擴散板13越來越薄,該暗紋會越明顯。However, although the support columns 14 solve the problem of the vertical drop of the diffusion plate 13, since the support columns 14 are solid cylinders, part of the light emitted by the LEDs 12 is blocked, resulting in the surface of the diffusion plate 13. Will produce dark lines. Further, as the diffusion plate 13 becomes thinner, the dark lines become more noticeable.

因此,有必要提供一創新且富進步性的直下式背光模組,以解決上述問題。Therefore, it is necessary to provide an innovative and progressive direct-lit backlight module to solve the above problems.

本發明係提供一種直下式背光模組,其包括一背板、複數個光源、一光學膜片及至少一支撐結構。該背板具有一容置空間。該等光源係位於該容置空間內。該光學膜片係位於該等光源上方。該支撐結構係位於該容置空間內,用以支撐該光學膜片,該支撐結構具有一罩體,該罩體之側壁係為可透光材質,且定義出一中空腔。The invention provides a direct type backlight module, which comprises a back plate, a plurality of light sources, an optical film and at least one supporting structure. The backboard has an accommodation space. The light sources are located in the accommodating space. The optical film is positioned above the light sources. The support structure is located in the accommodating space for supporting the optical film. The support structure has a cover body, and the side wall of the cover body is made of a light transmissive material, and defines a hollow cavity.

在該直下式背光模組中,該支撐結構可以防止該光學膜片產生垂落之現象。此外,該罩體係為透光材質,其外型係為倒U形且為中空,因而幾乎不會遮住該等光源所發出之光線,因此可以降低在該光學膜片表面之暗紋情況。In the direct type backlight module, the support structure can prevent the optical film from falling down. In addition, the cover system is a light-transmissive material, and its outer shape is inverted U-shaped and hollow, so that the light emitted by the light sources is hardly blocked, so that the darkness on the surface of the optical film can be reduced.

本發明另提供一種直下式背光模組,其包括一背板、複數個光源、一光學膜片及至少一支撐結構。該背板具有一容置空間。該等光源係位於該容置空間內。該光學膜片係位於該等光源上方。該支撐結構係位於該容置空間內,且為可透光材質,該支撐結構係為片狀體,其一端接觸該光學膜片,以支撐該光學膜片。The invention further provides a direct type backlight module, which comprises a back plate, a plurality of light sources, an optical film and at least one supporting structure. The backboard has an accommodation space. The light sources are located in the accommodating space. The optical film is positioned above the light sources. The support structure is located in the accommodating space and is a light transmissive material. The support structure is a sheet-shaped body, and one end of the support structure contacts the optical film to support the optical film.

參考圖2,顯示本發明直下式背光模組之一實施例之剖視示意圖。該直下式背光模組2包括一背板21、複數個光源22、一光學膜片23及至少一支撐結構24。該背板21具有一容置空間211。該等光源22係位於該容置空間211內。在本實施例中,該等光源22係為LED;然而在其他實施例中,該等光源22可以是燈管(CCFL)。該光學膜片23係位於該等光源22上方。在本實施例中,該光學膜片23係為擴散板,且其厚度係小於2 mm,例如1.5 mm。Referring to FIG. 2, a cross-sectional view showing an embodiment of a direct type backlight module of the present invention is shown. The direct type backlight module 2 includes a back plate 21, a plurality of light sources 22, an optical film 23, and at least one support structure 24. The backboard 21 has an accommodating space 211. The light sources 22 are located in the accommodating space 211. In the present embodiment, the light sources 22 are LEDs; however, in other embodiments, the light sources 22 may be light tubes (CCFLs). The optical film 23 is located above the light sources 22. In the present embodiment, the optical film 23 is a diffusing plate and has a thickness of less than 2 mm, for example, 1.5 mm.

該支撐結構24係位於該容置空間211內,用以支撐該光學膜片23。該支撐結構24具有一罩體25,該罩體25之側壁係為可透光材質,且定義出一中空腔251。在本實施例中,該罩體25之該側壁具有均一之厚度,較佳地,該罩體25之該側壁之厚度係介於0.5~1.5 mm之間。在本實施例中,該支撐結構24係為該罩體25本身,其一端(上端)係接觸且支撐該光學膜片23,另一端(下端)係固定於該背板21上。The support structure 24 is located in the accommodating space 211 for supporting the optical film 23 . The support structure 24 has a cover 25, and the side wall of the cover 25 is made of a light transmissive material, and defines a hollow cavity 251. In this embodiment, the sidewall of the cover 25 has a uniform thickness. Preferably, the sidewall of the cover 25 has a thickness of between 0.5 and 1.5 mm. In the present embodiment, the support structure 24 is the cover body 25 itself, and one end (upper end) contacts and supports the optical film 23, and the other end (lower end) is fixed to the back plate 21.

在本實施例中,該罩體25下端具有一延伸突緣252,且該背板21具有與該延伸突緣252對應之卡槽212。該延伸突緣252係旋轉卡制於該卡槽212,使得該支撐結構24得以固定於該背板21上。可以理解的是,該支撐結構24也可以利用其他方式(例如鎖合、黏合、鉚合或插設等)固定於該背板21上。此外,如果該背板21上方具有反射片(圖中未示),則該支撐結構24可以穿過該反射片而固定於該背板21上,或是該支撐結構24可以固定於該反射片上。In the embodiment, the lower end of the cover body 25 has an extending flange 252, and the back plate 21 has a card slot 212 corresponding to the extending flange 252. The extension flange 252 is rotatably clipped to the card slot 212 such that the support structure 24 is fixed to the back plate 21. It can be understood that the support structure 24 can also be fixed to the backboard 21 by other means (such as locking, bonding, riveting or inserting). In addition, if the back plate 21 has a reflective sheet (not shown), the support structure 24 can be fixed to the back plate 21 through the reflective sheet, or the support structure 24 can be fixed on the reflective sheet. .

參考圖3,顯示圖2之直下式背光模組移除光學膜片後之俯視示意圖。該直下式背光模組2包括四個支撐結構24,其係位於該容置空間211之中央位置,且分散於該等光源22之間。Referring to FIG. 3, a schematic top view of the direct type backlight module of FIG. 2 after removing the optical film is shown. The direct-type backlight module 2 includes four supporting structures 24 located at a central position of the accommodating space 211 and dispersed between the light sources 22 .

在該直下式背光模組2中,該支撐結構24可以防止該光學膜片23產生垂落之現象。此外,該罩體25係為透光材質,其外型係為倒U形且為中空,因遮住該等光源22所發出之光線少,因此可以降低在該光學膜片23表面之暗紋情況。In the direct type backlight module 2, the support structure 24 can prevent the optical film 23 from falling down. In addition, the cover 25 is made of a light-transmissive material, and its outer shape is inverted U-shaped and hollow. Since the light emitted by the light sources 22 is less, the dark lines on the surface of the optical film 23 can be reduced. Happening.

參考圖4及圖5,圖4顯示本發明直下式背光模組之另一實施例之剖視示意圖,圖5顯示圖4之直下式背光模組移除光學膜片後之俯視示意圖。本實施例之直下式背光模組2a與圖2及圖3所示之直下式背光模組2大致相同,其中相同之元件賦予相同之編號,其不同處在於,在本實施例中,每一支撐結構24係罩住該等光源22之其中之一。亦即,該等光源22之其中之一係位於該罩體25之該中空腔251之中。在本實施例中,由於該支撐結構24係位於一光源22之正上方,因此其距離其他光源22係最遠,對其他光源22的影響也最小,加上該罩體25係為透光材質。因此,可以更降低在該光學膜片23表面之暗紋情況。4 and FIG. 5, FIG. 4 is a cross-sectional view showing another embodiment of the direct type backlight module of the present invention, and FIG. 5 is a schematic top view showing the optical module of the direct type backlight module of FIG. The direct type backlight module 2a of the present embodiment is substantially the same as the direct type backlight module 2 shown in FIG. 2 and FIG. 3, wherein the same elements are given the same numbers, and the difference is that, in this embodiment, each Support structure 24 encloses one of the light sources 22. That is, one of the light sources 22 is located in the hollow cavity 251 of the cover 25. In this embodiment, since the support structure 24 is located directly above a light source 22, it is farthest from the other light sources 22, and has the least influence on the other light sources 22, and the cover 25 is made of a light-transmitting material. . Therefore, the dark streaks on the surface of the optical film 23 can be further reduced.

參考圖6,顯示本發明直下式背光模組之另一實施例之剖視示意圖。本實施例之直下式背光模組3與圖2及圖3所示之直下式背光模組2大致相同,其中相同之元件賦予相同之編號,其不同處在於該支撐結構24a之型式。在本實施例中,該支撐結構24a具有一罩體26及一頂柱27。該罩體26之側壁係為可透光材質,且定義出一中空腔261。該罩體26之該側壁具有均一之厚度,較佳地,該罩體26之該側壁之厚度係介於0.5~1.5 mm之間。該頂柱27之一端(下端)連接該罩體26,另一端(上端)接觸且支撐該光學膜片23。該頂柱27係可透光或不透光,此外其表面可以具有複數個微結構或霧面處理。Referring to FIG. 6, a cross-sectional view of another embodiment of the direct type backlight module of the present invention is shown. The direct type backlight module 3 of the present embodiment is substantially the same as the direct type backlight module 2 shown in FIGS. 2 and 3, wherein the same elements are given the same reference numerals, and the difference lies in the type of the support structure 24a. In this embodiment, the support structure 24a has a cover 26 and a top post 27. The side wall of the cover 26 is made of a light transmissive material and defines a hollow cavity 261. The side wall of the cover 26 has a uniform thickness. Preferably, the side wall of the cover 26 has a thickness of between 0.5 and 1.5 mm. One end (lower end) of the top post 27 is connected to the cover 26, and the other end (upper end) contacts and supports the optical film 23. The top pillar 27 is light transmissive or opaque, and the surface thereof may have a plurality of microstructures or matte finishes.

該頂柱27係為一錐狀體,其具有一頂角α,該頂角α係介於5~15度之間,且該頂柱27之最大寬度係介於2~7 mm之間。較佳地,該罩體26及該頂柱27係為一體成形。同樣地,該罩體26下端具有一延伸突緣262,用以旋轉卡制於該背板21之卡槽212,使得該支撐結構24a得以固定於該背板21上。The top post 27 is a cone having an apex angle α between 5 and 15 degrees, and the maximum width of the top post 27 is between 2 and 7 mm. Preferably, the cover 26 and the top post 27 are integrally formed. Similarly, the lower end of the cover body 26 has an extending flange 262 for rotating the card slot 212 of the back plate 21 so that the support structure 24a is fixed to the back plate 21.

此外,該支撐結構24a可以利用卡合、鎖合、黏合、鉚合或插設等方式,固定於該背板21上。又,如果該背板21上方具有反射片(圖中未示),則該支撐結構24a可以穿過該反射片而固定於該背板21上,或是該支撐結構24a可以固定於該反射片上。In addition, the support structure 24a can be fixed to the backboard 21 by means of snapping, locking, bonding, riveting or inserting. Moreover, if the backing plate 21 has a reflective sheet (not shown), the supporting structure 24a can be fixed to the backing plate 21 through the reflective sheet, or the supporting structure 24a can be fixed on the reflective sheet. .

參考圖7,顯示圖6之直下式背光模組移除光學膜片後之俯視示意圖。該直下式背光模組3包括四個支撐結構24a,其係位於該容置空間211之中央位置,且分散於該等光源22之間。Referring to FIG. 7, a schematic top view of the direct type backlight module of FIG. 6 after removing the optical film is shown. The direct-type backlight module 3 includes four supporting structures 24a located at a central position of the accommodating space 211 and dispersed between the light sources 22.

在該直下式背光模組3中,該支撐結構24a可以防止該光學膜片23產生垂落之現象。此外,由於該頂柱27係為一細型化柱體,遮住該等光源22所發出之光線少,因此可以降低在該光學膜片23表面之暗紋情況。In the direct type backlight module 3, the support structure 24a can prevent the optical film 23 from falling down. In addition, since the top pillar 27 is a thinned cylinder, the light emitted from the light source 22 is less, so that the darkness on the surface of the optical film 23 can be reduced.

參考圖8,顯示本發明直下式背光模組之另一實施例之剖視示意圖。參考圖9,顯示圖8之直下式背光模組移除光學膜片後之俯視示意圖。本實施例之直下式背光模組3a與圖6及圖7所示之直下式背光模組3大致相同,其中相同之元件賦予相同之編號,其不同處在於,在本實施例中,每一支撐結構24a係罩住該等光源22之其中之一。亦即,該等光源22之其中之一係位於該罩體26之該中空腔261之中。Referring to FIG. 8, a cross-sectional view of another embodiment of the direct type backlight module of the present invention is shown. Referring to FIG. 9, a schematic top view of the direct type backlight module of FIG. 8 after removing the optical film is shown. The direct type backlight module 3a of the present embodiment is substantially the same as the direct type backlight module 3 shown in FIG. 6 and FIG. 7, wherein the same elements are given the same numbers, and the difference is that, in this embodiment, each The support structure 24a covers one of the light sources 22. That is, one of the light sources 22 is located in the hollow cavity 261 of the cover 26.

此外,光源22之光線可穿透該罩體26,其中部分光線可導入於該頂柱27中,透過該頂柱27之表面之複數個微結構或霧面處理,可將光線導出於該頂柱27。或者,複數個微結構或霧面處理僅成型於鄰近該罩體26之該頂柱27之一半或部份表面。In addition, the light of the light source 22 can penetrate the cover 26, and a part of the light can be introduced into the top post 27, and a plurality of microstructures or matte treatments on the surface of the top post 27 can be used to guide the light to the top. Column 27. Alternatively, a plurality of microstructures or matte finishes are formed only on one or a half of the surface of the top post 27 adjacent the cover 26.

在本實施例中,由於該支撐結構24a係位於一光源22之正上方,因此其距離其他光源22係最遠,對其他光源22的影響也最小,加上該頂柱27係為一細型化柱體,遮住該等光源22所發出之光線少,可以更降低在該光學膜片23表面之暗紋情況。In this embodiment, since the support structure 24a is located directly above the light source 22, it is farthest from the other light sources 22, and has the least influence on the other light sources 22, and the top pillar 27 is a thinned type. The cylinders cover the light sources 22 to emit less light, which can further reduce the darkness on the surface of the optical film 23.

參考圖10,顯示本發明直下式背光模組之另一實施例之剖視示意圖。本實施例之直下式背光模組4與圖2及圖3所示之直下式背光模組2大致相同,其中相同之元件賦予相同之編號,其不同處在於該支撐結構24b之型式。在本實施例中,該支撐結構24b係為一片狀體28,用以支撐該光學膜片23。該片狀體28係為可透光材質,且具有均一之厚度,較佳地,該片狀體28之厚度係介於0.5~1.5 mm之間。在本實施例中,該片狀體28係為三角形,其一端(上端)係接觸且支撐該光學膜片23,另一端(下端)係固定於該背板21上。在其他實施例中,該片狀體也可以是矩形或是其他形狀。Referring to FIG. 10, a cross-sectional view showing another embodiment of the direct type backlight module of the present invention is shown. The direct type backlight module 4 of the present embodiment is substantially the same as the direct type backlight module 2 shown in FIGS. 2 and 3, wherein the same elements are given the same reference numerals, and the difference lies in the type of the support structure 24b. In the present embodiment, the support structure 24b is a sheet-like body 28 for supporting the optical film 23. The sheet 28 is made of a light transmissive material and has a uniform thickness. Preferably, the sheet 28 has a thickness of between 0.5 and 1.5 mm. In the present embodiment, the sheet-like body 28 is triangular, and one end (upper end) is in contact with and supports the optical film 23, and the other end (lower end) is fixed to the back plate 21. In other embodiments, the sheet may also be rectangular or of other shapes.

在本實施例中,該片狀體28下端具有一突出部281,且該背板21具有與該突出部281對應之透孔213。該突出部281係穿過該透孔213而卡制於該背板21,使得該支撐結構24b得以固定於該背板21上。可以理解的是,該支撐結構24b也可以利用其他方式(例如鎖合、黏合、鉚合或插設等)固定於該背板21上。此外,如果該背板21上方具有反射片(圖中未示),則該支撐結構24b可以穿過該反射片而固定於該背板21上,或是該支撐結構24b可以固定於該反射片上。In the embodiment, the lower end of the sheet body 28 has a protruding portion 281, and the back plate 21 has a through hole 213 corresponding to the protruding portion 281. The protruding portion 281 is inserted through the through hole 213 to be engaged with the back plate 21 such that the supporting structure 24b is fixed to the back plate 21. It can be understood that the support structure 24b can also be fixed to the backboard 21 by other means (such as locking, bonding, riveting or inserting). In addition, if the backing plate 21 has a reflective sheet (not shown), the supporting structure 24b can be fixed to the backing plate 21 through the reflective sheet, or the supporting structure 24b can be fixed on the reflective sheet. .

參考圖11,顯示圖10之直下式背光模組移除光學膜片後之俯視示意圖。該直下式背光模組4包括四個支撐結構24b,其係位於該容置空間211之中央位置。每一支撐結構24b係位於二排光源22之間,較佳地,係平行該等光源22之排列方向(亦即圖中之水平或垂直方向)。Referring to FIG. 11, a schematic top view of the direct type backlight module of FIG. 10 after removing the optical film is shown. The direct type backlight module 4 includes four supporting structures 24b located at a central position of the accommodating space 211. Each of the support structures 24b is located between the two rows of light sources 22, preferably parallel to the direction in which the light sources 22 are arranged (i.e., horizontal or vertical in the drawing).

在該直下式背光模組4中,該支撐結構24b可以防止該光學膜片23產生垂落之現象。此外,該支撐結構24b係為透光材質,因遮住該等光源22所發出之光線少,因此可以降低在該光學膜片23表面之暗紋情況。In the direct type backlight module 4, the support structure 24b can prevent the optical film 23 from falling down. In addition, the support structure 24b is made of a light-transmitting material, and the light emitted from the light source 22 is less, so that the dark surface on the surface of the optical film 23 can be reduced.

本發明直下式背光模組進一步可包括其它膜片,其設置於該光學膜片23之上方,而其它膜片可包括如擴散片、聚光片、反射式增亮膜(DBEF)等之其一或其組合,但並不以此為限。The direct type backlight module of the present invention may further include other films disposed above the optical film 23, and other films may include, for example, a diffusion sheet, a condensing sheet, a reflective brightness enhancement film (DBEF), and the like. One or a combination thereof, but not limited to this.

上述實施例僅為說明本發明之原理及其功效,並非限制本發明,因此習於此技術之人士對上述實施例進行修改及變化仍不脫本發明之精神。本發明之權利範圍應如後述之申請專利範圍所列。The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the scope of the present invention. The scope of the invention should be as set forth in the appended claims.

1...習知直下式背光模組1. . . Conventional direct type backlight module

2...本發明直下式背光模組之一實施例2. . . One embodiment of the direct type backlight module of the present invention

2a...本發明直下式背光模組之另一實施例2a. . . Another embodiment of the direct type backlight module of the present invention

3...本發明直下式背光模組之另一實施例3. . . Another embodiment of the direct type backlight module of the present invention

3a...本發明直下式背光模組之另一實施例3a. . . Another embodiment of the direct type backlight module of the present invention

4...本發明直下式背光模組之另一實施例4. . . Another embodiment of the direct type backlight module of the present invention

11...背板11. . . Backplane

12...LED12. . . led

13...擴散板13. . . Diffuser

14...支撐柱14. . . Support column

21...背板twenty one. . . Backplane

22...光源twenty two. . . light source

23...光學膜片twenty three. . . Optical diaphragm

24...支撐結構twenty four. . . supporting structure

24a...支撐結構24a. . . supporting structure

24b...支撐結構24b. . . supporting structure

25...罩體25. . . Cover

26...罩體26. . . Cover

27...頂柱27. . . Top column

28...片狀體28. . . Platelet

111...容置空間111. . . Housing space

211...容置空間211. . . Housing space

212...卡槽212. . . Card slot

213...透孔213. . . Through hole

251...中空腔251. . . Cavity

252...延伸突緣252. . . Extended flange

261...中空腔261. . . Cavity

262...延伸突緣262. . . Extended flange

281...突出部281. . . Protruding

α...頂角α. . . Top angle

圖1顯示習知直下式背光模組之剖視示意圖;1 is a cross-sectional view showing a conventional direct type backlight module;

圖2顯示本發明直下式背光模組之一實施例之剖視示意圖;2 is a cross-sectional view showing an embodiment of a direct type backlight module of the present invention;

圖3顯示圖2之直下式背光模組移除光學膜片後之俯視示意圖;3 is a top plan view showing the optical module of the direct type backlight module of FIG. 2 after removing the optical film;

圖4顯示本發明直下式背光模組之另一實施例之剖視示意圖;4 is a cross-sectional view showing another embodiment of the direct type backlight module of the present invention;

圖5顯示圖4之直下式背光模組移除光學膜片後之俯視示意圖;FIG. 5 is a top plan view showing the optical module after the optical module of FIG. 4 is removed;

圖6顯示本發明直下式背光模組之另一實施例之剖視示意圖;6 is a cross-sectional view showing another embodiment of the direct type backlight module of the present invention;

圖7顯示圖6之直下式背光模組移除光學膜片後之俯視示意圖;7 is a top plan view showing the optical module of the direct type backlight module of FIG. 6 after removing the optical film;

圖8顯示本發明直下式背光模組之另一實施例之剖視示意圖;8 is a cross-sectional view showing another embodiment of the direct type backlight module of the present invention;

圖9顯示圖8之直下式背光模組移除光學膜片後之俯視示意圖;9 is a top plan view showing the optical module of the direct type backlight module of FIG. 8 after removing the optical film;

圖10顯示本發明直下式背光模組之另一實施例之剖視示意圖;及FIG. 10 is a cross-sectional view showing another embodiment of the direct type backlight module of the present invention; and

圖11顯示圖10之直下式背光模組移除光學膜片後之俯視示意圖。FIG. 11 is a top plan view showing the direct type backlight module of FIG. 10 after the optical film is removed.

2...本發明直下式背光模組之一實施例2. . . One embodiment of the direct type backlight module of the present invention

21...背板twenty one. . . Backplane

22...光源twenty two. . . light source

23...光學膜片twenty three. . . Optical diaphragm

24...支撐結構twenty four. . . supporting structure

25...罩體25. . . Cover

211...容置空間211. . . Housing space

212...卡槽212. . . Card slot

251...中空腔251. . . Cavity

252...延伸突緣252. . . Extended flange

Claims (17)

一種直下式背光模組,包括:一背板,具有一容置空間;複數個光源,位於該容置空間內;一光學膜片,位於該等光源上方;及至少一支撐結構,位於該容置空間內,用以支撐該光學膜片,該支撐結構具有一罩體及一頂柱,該罩體之側壁係為可透光材質,且定義出一中空腔,該頂柱之一端連接該罩體,另一端接觸該光學膜片,且該頂柱之表面具有複數個微結構。 A direct type backlight module includes: a back plate having an accommodating space; a plurality of light sources located in the accommodating space; an optical film located above the light sources; and at least one supporting structure located at the accommodating structure The support structure has a cover body and a top post, the side wall of the cover body is a light transmissive material, and defines a hollow cavity, and one end of the top post is connected to the optical film. The cover has the other end contacting the optical film, and the surface of the top post has a plurality of microstructures. 如請求項1之直下式背光模組,其中該等光源係為LED或燈管(CCFL)。 The direct type backlight module of claim 1, wherein the light sources are LEDs or tubes (CCFLs). 如請求項1之直下式背光模組,其中該頂柱具有一頂角,該頂角係介於5~15度之間。 The direct type backlight module of claim 1, wherein the top pillar has a vertex angle, and the vertex angle is between 5 and 15 degrees. 如請求項1之直下式背光模組,其中該頂柱之最大寬度係介於2~7mm之間。 The direct type backlight module of claim 1, wherein the maximum width of the top pillar is between 2 and 7 mm. 如請求項1之直下式背光模組,其中該光學膜片之厚度係小於2mm。 The direct type backlight module of claim 1, wherein the optical film has a thickness of less than 2 mm. 如請求項1之直下式背光模組,其中該等光源之其中之一係位於該罩體之該中空腔之中。 The direct type backlight module of claim 1, wherein one of the light sources is located in the hollow cavity of the cover. 如請求項1之直下式背光模組,其中該支撐結構係固定於該背板。 The direct type backlight module of claim 1, wherein the support structure is fixed to the back plate. 如請求項1之直下式背光模組,其中該罩體之該側壁具有均一之厚度。 The direct type backlight module of claim 1, wherein the side wall of the cover has a uniform thickness. 如請求項8之直下式背光模組,其中該罩體之該側壁之厚度係介於0.5~1.5mm之間。 The direct type backlight module of claim 8, wherein the thickness of the side wall of the cover is between 0.5 and 1.5 mm. 如請求項1之直下式背光模組,其中該光學膜片係為擴散板。 The direct type backlight module of claim 1, wherein the optical film is a diffusion plate. 一種直下式背光模組,包括:一背板,具有一容置空間;複數個光源,位於該容置空間內;一光學膜片,位於該等光源上方;及至少一支撐結構,位於該容置空間內,且為可透光材質,該支撐結構係為片狀體,其一端接觸該光學膜片,以支撐該光學膜片,該支撐結構係位於二排光源之間,且係平行該等光源之排列方向。 A direct type backlight module includes: a back plate having an accommodating space; a plurality of light sources located in the accommodating space; an optical film located above the light sources; and at least one supporting structure located at the accommodating structure The support structure is a sheet-like body, and one end of the support structure is in contact with the optical film to support the optical film. The support structure is located between the two rows of light sources and is parallel. The direction in which the light sources are arranged. 如請求項11之直下式背光模組,其中該等光源係為LED或燈管(CCFL)。 The direct type backlight module of claim 11, wherein the light sources are LEDs or tubes (CCFLs). 如請求項11之直下式背光模組,其中該支撐結構係固定於該背板。 The direct type backlight module of claim 11, wherein the support structure is fixed to the back plate. 如請求項11之直下式背光模組,其中該支撐結構具有均一之厚度。 The direct type backlight module of claim 11, wherein the support structure has a uniform thickness. 如請求項14之直下式背光模組,其中該支撐結構之厚度係介於0.5~1.5mm之間。 The direct type backlight module of claim 14, wherein the support structure has a thickness of between 0.5 and 1.5 mm. 如請求項11之直下式背光模組,其中該支撐結構係為三角形或矩形。 The direct type backlight module of claim 11, wherein the support structure is triangular or rectangular. 如請求項11之直下式背光模組,其中該光學膜片係為擴散板。 The direct type backlight module of claim 11, wherein the optical film is a diffusion plate.
TW100140419A 2011-11-04 2011-11-04 Direct type backlight module TWI589962B (en)

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