TWI485478B - Backlight module having reflective layer and display apparatus thereof - Google Patents

Backlight module having reflective layer and display apparatus thereof Download PDF

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Publication number
TWI485478B
TWI485478B TW101137292A TW101137292A TWI485478B TW I485478 B TWI485478 B TW I485478B TW 101137292 A TW101137292 A TW 101137292A TW 101137292 A TW101137292 A TW 101137292A TW I485478 B TWI485478 B TW I485478B
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Taiwan
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ring portion
reflective layer
outer ring
backlight module
inner ring
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TW101137292A
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Chinese (zh)
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TW201415129A (en
Inventor
Cheng Yen Chiu
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Au Optronics Corp
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Priority to TW101137292A priority Critical patent/TWI485478B/en
Priority to CN201210535159.4A priority patent/CN103104865B/en
Publication of TW201415129A publication Critical patent/TW201415129A/en
Application granted granted Critical
Publication of TWI485478B publication Critical patent/TWI485478B/en

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Description

具反射層之背光模組及其顯示裝置Backlight module with reflective layer and display device thereof

本發明係關於一種背光模組及包含其之顯示裝置;具體而言,本發明係關於一種具有反射層之背光模組及包含其之顯示裝置。The present invention relates to a backlight module and a display device therewith; in particular, the present invention relates to a backlight module having a reflective layer and a display device therewith.

可攜式電子裝置如筆記型電腦、手機、平板電腦等,已廣泛使用於日常生活中。隨著技術發展,可攜式電子裝置的尺寸必須滿足輕、薄、短、小的特性,才能達到便於攜帶的目的。然而,因為尺寸薄化的過程所產生空間上的變化,除了需犧牲部份元件以因應容納的空間減少的情形,也同時面臨顯示效果及結構穩定上的挑戰。Portable electronic devices such as notebook computers, mobile phones, tablet computers, etc., have been widely used in daily life. With the development of technology, the size of the portable electronic device must meet the characteristics of light, thin, short, and small, so as to achieve the purpose of portability. However, because of the spatial variation caused by the thinning process, in addition to the need to sacrifice some of the components in order to reduce the space required to accommodate, it also faces the challenge of display effect and structural stability.

圖1A及圖1B為傳統顯示裝置之示意圖。如圖1A所示,傳統顯示裝置10之背板32圍繞於外側並呈一中空設計,而背板32向中心延伸的部分相較外側部分有一高度差。請參見圖1B,傳統顯示裝置10的剖面圖如圖1B所示,傳統顯示裝置10主要包含顯示面板20及背光模組30。以目前顯示裝置的組裝方式,必須在背板32底部預留凹陷部33供定位膠帶40貼合。然而,這樣的設計會造成背板32朝向導光板31之一面有高低差,如圖1B所示,夾層空間34的位置即是凹陷部33成形後所產生的空隙(對應圖1A背板32向中心延伸的部分),如此一來,對應夾層空間34的顯示區域B之出光效果便受到影響。此外,薄化的反射膜35會造成光穿透率上升,因而降低反射膜35的反射效果,加上前述結構之問題,使得顯示區域B邊緣的亮度明顯變暗,也降低消 費者的購買意願。1A and 1B are schematic views of a conventional display device. As shown in FIG. 1A, the back plate 32 of the conventional display device 10 is surrounded by the outer side and has a hollow design, and the portion of the back plate 32 extending toward the center has a height difference from the outer portion. Referring to FIG. 1B , a cross-sectional view of a conventional display device 10 is shown in FIG. 1B . The conventional display device 10 mainly includes a display panel 20 and a backlight module 30 . In the current assembly of the display device, a recess 33 must be reserved at the bottom of the backing plate 32 for the positioning tape 40 to be attached. However, such a design may cause the back plate 32 to face the surface of the light guide plate 31 with a height difference. As shown in FIG. 1B, the position of the interlayer space 34 is the gap generated after the recessed portion 33 is formed (corresponding to the back plate 32 of FIG. 1A). As a result of the centrally extending portion, the light-emitting effect of the display area B corresponding to the interlayer space 34 is affected. In addition, the thinned reflective film 35 causes an increase in light transmittance, thereby reducing the reflection effect of the reflective film 35, and in addition to the aforementioned structure, the brightness of the edge of the display area B is significantly darkened and reduced. The willingness of the purchaser.

本發明之一目的係設置複合式反射層於背光模組中,以提高背光模組及顯示裝置之光學表現。One of the objectives of the present invention is to provide a composite reflective layer in a backlight module to improve the optical performance of the backlight module and the display device.

本發明之另一目的係以反射層支撐導光板,以提高結構支撐效果。Another object of the present invention is to support the light guide plate with a reflective layer to enhance the structural support effect.

背光模組包含導光板、背板及反射層。背板係部分設置對應於導光板底面;此外,背板具有平行於導光板底面的外環部及自外環部朝導光板中心方向延伸的內環部,並以外環部支撐導光板底面之邊緣。外環部支撐一部分的導光板,而內環部與底面間夾有一夾層空間。在夾層空間中設置反射層於內環部朝向導光板底面之一面上並填充至少部分之夾層空間。The backlight module includes a light guide plate, a back plate and a reflective layer. The back plate portion is disposed corresponding to the bottom surface of the light guide plate; further, the back plate has an outer ring portion parallel to the bottom surface of the light guide plate and an inner ring portion extending from the outer ring portion toward the center of the light guide plate, and the outer ring portion supports the bottom surface of the light guide plate edge. The outer ring portion supports a part of the light guide plate, and a sandwich space is sandwiched between the inner ring portion and the bottom surface. A reflective layer is disposed in the interlayer space on one side of the inner ring portion facing the bottom surface of the light guide plate and filled with at least a portion of the interlayer space.

顯示裝置除背光模組外,亦包含顯示面板設置於背光模組上,例如導光板背向底面之一側位置。藉由反射層之設置,係可使顯示面板之顯示區域邊緣光學表現提升,增加亮度之均勻性。In addition to the backlight module, the display device also includes a display panel disposed on the backlight module, such as a side of the light guide plate facing away from the bottom surface. By the arrangement of the reflective layer, the optical performance of the edge of the display area of the display panel can be improved, and the uniformity of brightness is increased.

本發明係提供一種背光模組及包含其之顯示裝置。背光模組較佳係包含側光式之光源結構;然而在不同實施例中,亦可包含直下式之光源結構。顯示裝置較佳係為液晶顯示器;然而在不同實施例中,亦可為其他使用背光模組之顯示器。The invention provides a backlight module and a display device therewith. The backlight module preferably includes an edge-lit light source structure; however, in different embodiments, a direct-lit light source structure may also be included. The display device is preferably a liquid crystal display; however, in various embodiments, other displays using the backlight module may be used.

圖2A為本發明顯示裝置100之實施例示意圖。如圖2A所示,顯示裝置100具有顯示面板200及背光模組300。背光模組300 主要有導光板310、背板320及反射層340。背板320係設置於顯示裝置100底部,並且自外側包覆顯示裝置100。此外,背板320具有平行於導光板310底面的外環部322及自外環部322朝導光板310中心方向延伸的內環部324,並以外環部322支撐導光板310底面312之邊緣。在較佳實施例中,背板320係由金屬板件製成,內環部324係可以沖壓方式產生;然在不同實施例中,背板320亦可為其他不同之材質,或使用射出成型等不同方式製成。如圖2A所示,外環部322支撐一部分的導光板310,特別是邊緣的部分;而內環部324與底面312間夾有一夾層空間330。在夾層空間330中至少部分填充有反射層340;在圖2A所示之實施例中,反射層340是設置於內環部324朝向導光板310底面312之一面上並填滿夾層空間330,同時支撐導光板310。2A is a schematic diagram of an embodiment of a display device 100 of the present invention. As shown in FIG. 2A, the display device 100 has a display panel 200 and a backlight module 300. Backlight module 300 There are mainly a light guide plate 310, a back plate 320 and a reflective layer 340. The back plate 320 is disposed at the bottom of the display device 100 and covers the display device 100 from the outside. In addition, the back plate 320 has an outer ring portion 322 parallel to the bottom surface of the light guide plate 310 and an inner ring portion 324 extending from the outer ring portion 322 toward the center of the light guide plate 310, and the outer ring portion 322 supports the edge of the bottom surface 312 of the light guide plate 310. In a preferred embodiment, the backing plate 320 is made of sheet metal, and the inner ring portion 324 can be formed by stamping; however, in different embodiments, the backing plate 320 can be made of other different materials or injection molding. Made in different ways. As shown in FIG. 2A, the outer ring portion 322 supports a portion of the light guide plate 310, particularly the edge portion, and the sandwich space 330 is sandwiched between the inner ring portion 324 and the bottom surface 312. The reflective layer 340 is at least partially filled in the interlayer space 330. In the embodiment shown in FIG. 2A, the reflective layer 340 is disposed on the inner ring portion 324 facing one surface of the bottom surface 312 of the light guide plate 310 and filling the sandwich space 330. The light guide plate 310 is supported.

此外,顯示面板200係設置於導光板310背向底面312之一側,即顯示面板200與外環部322是設置在導光板310的相對兩側。顯示面板200的顯示區域B邊緣是對應內環部324的位置,詳言之,內環部324於顯示面板200上之投影範圍是位於顯示區域B之邊緣。顯示區域B往導光板310中心方向的部分未對應背板320,或者說是對應到背板320之中空區域C。請同時參考圖2B。圖2B為本發明背板320與反射層340位置關係示意圖。如圖2B所示,沿圖2B之AA’方向可得到圖2A所示之剖面圖。背板320位於顯示裝置100外側而反射層340位於顯示裝置100內側並覆蓋內環部(圖未示),內環部及反射層340均圍繞中空區域C。In addition, the display panel 200 is disposed on one side of the light guide plate 310 facing away from the bottom surface 312 , that is, the display panel 200 and the outer ring portion 322 are disposed on opposite sides of the light guide plate 310 . The edge of the display area B of the display panel 200 is the position corresponding to the inner ring portion 324. In detail, the projection range of the inner ring portion 324 on the display panel 200 is located at the edge of the display area B. The portion of the display area B toward the center of the light guide plate 310 does not correspond to the back plate 320, or the hollow area C corresponding to the back plate 320. Please also refer to Figure 2B. 2B is a schematic view showing the positional relationship between the back plate 320 and the reflective layer 340 of the present invention. As shown in Fig. 2B, a cross-sectional view as shown in Fig. 2A is obtained along the AA' direction of Fig. 2B. The back plate 320 is located outside the display device 100 and the reflective layer 340 is located inside the display device 100 and covers the inner ring portion (not shown). The inner ring portion and the reflective layer 340 surround the hollow region C.

在較佳實施例中,導光板310之底面312上形成有複數微結構314,且中空區域C於底面312上投影範圍之微結構314分佈密度較佳大於內環部324於底面312上投影範圍之微結構314分佈密度。如圖2A所示,導光板310底面312對應內環部324的部分, 其微結構314設置的密度較疏;導光板310底面312對應中空區域C的部分,其微結構314設置的密度較密。換言之,微結構314設置較疏的區域較佳係呈環狀分佈。藉此設置方式,可提高中空區域C的出光量並且使顯示裝置100能保有較輕的重量,並且可與反射層340之設置或材質相互搭配,以得到最均勻的出光效果。In the preferred embodiment, the bottom surface 312 of the light guide plate 310 is formed with a plurality of microstructures 314, and the distribution density of the microstructure 314 of the hollow region C on the bottom surface 312 is preferably larger than the projection range of the inner ring portion 324 on the bottom surface 312. The microstructure 314 is distributed in density. As shown in FIG. 2A, the bottom surface 312 of the light guide plate 310 corresponds to a portion of the inner ring portion 324. The microstructure 314 is disposed at a lower density; the bottom surface 312 of the light guide plate 310 corresponds to a portion of the hollow region C, and the microstructure 314 is densely disposed. In other words, the regions in which the microstructures 314 are disposed sparsely are preferably annularly distributed. By this arrangement, the amount of light emitted from the hollow region C can be increased and the display device 100 can be kept light in weight, and can be matched with the arrangement or material of the reflective layer 340 to obtain the most uniform light-emitting effect.

如圖2A所示,背板320包含與外環部322連接之側壁326,即側壁326是連接外環部322相對於內環部324之反側且包圍顯示裝置100之外側。側壁326的外表面上貼有定位膠帶400。如圖2A所示,定位膠帶400之兩側分別突出於側壁326,其一側彎折連接相反於背光模組300之表面,即顯示面板之外表面202,另一側則彎折連接外環部之外表面323。如圖2A所示,定位膠帶400的剖面呈現如C字型包覆顯示面板200外側邊緣、背板320之側壁326以及外環部322之外表面323。內環部324之外表面係突出於外環部322之內表面以在外環部322外側形成凹陷部321,使定位膠帶400連接外環部322外表面之部分可容納於凹陷部321,因此定位膠帶400貼合背板320底部後可保持顯示裝置100的平整性,以方便組裝。As shown in FIG. 2A, the backing plate 320 includes a side wall 326 that is coupled to the outer ring portion 322, that is, the side wall 326 is connected to the opposite side of the outer ring portion 322 with respect to the inner ring portion 324 and surrounds the outer side of the display device 100. A positioning tape 400 is attached to the outer surface of the side wall 326. As shown in FIG. 2A, the two sides of the positioning tape 400 protrude from the side wall 326 respectively, and one side of the positioning tape 400 is bent and connected to the surface of the backlight module 300, that is, the outer surface 202 of the display panel, and the other side is bent and connected to the outer ring. Outside surface 323. As shown in FIG. 2A, the cross section of the positioning tape 400 is such as the outer edge of the C-shaped cover display panel 200, the side wall 326 of the back plate 320, and the outer surface 323 of the outer ring portion 322. The outer surface of the inner ring portion 324 protrudes from the inner surface of the outer ring portion 322 to form a recess portion 321 outside the outer ring portion 322, so that the portion of the positioning tape 400 connected to the outer surface of the outer ring portion 322 can be accommodated in the recess portion 321, so After the positioning tape 400 is attached to the bottom of the back plate 320, the flatness of the display device 100 can be maintained to facilitate assembly.

此外,導光板310於底面312上還具有反射膜350,而外環部322係支撐反射膜350以間接支撐底面312。如圖2A所示,位於反射膜350及內環部324間的反射層340頂面342與外環部322支撐導光板310底面312之表面齊平。如此一來,反射層340可藉由支撐反射膜350間接支撐導光板310,以提高結構之穩定性。在此實施例中,反射層340之光反射率與外環部322表面之光反射率相同。另一方面,為避免薄化後的反射膜350造成反射效果不佳的情況,反射層340之光反射率較佳係採用大於反射膜350之光反射率,且/或反射層340之光穿透率係小於反射膜350之光 穿透率,因此,通過反射膜350的光線可再由反射層340反射,以提高出光效率。同時,藉此設置方式,顯示區域B邊緣處,即對應內環部324的投影範圍,其亮度可以提升以避免產生暗帶。In addition, the light guide plate 310 further has a reflective film 350 on the bottom surface 312, and the outer ring portion 322 supports the reflective film 350 to indirectly support the bottom surface 312. As shown in FIG. 2A, the top surface 342 of the reflective layer 340 between the reflective film 350 and the inner ring portion 324 is flush with the surface of the bottom surface 312 of the outer ring portion 322 supporting the light guide plate 310. In this way, the reflective layer 340 can indirectly support the light guide plate 310 by supporting the reflective film 350 to improve the stability of the structure. In this embodiment, the light reflectance of the reflective layer 340 is the same as the light reflectance of the surface of the outer ring portion 322. On the other hand, in order to avoid the reflection effect of the thinned reflective film 350, the light reflectance of the reflective layer 340 is preferably greater than that of the reflective film 350, and/or the light of the reflective layer 340 is worn. The transmittance is smaller than the light of the reflective film 350 The transmittance, therefore, the light passing through the reflective film 350 can be reflected by the reflective layer 340 to improve the light extraction efficiency. At the same time, by means of the setting manner, the edge of the display area B, that is, the projection range corresponding to the inner ring portion 324, can be raised to avoid dark bands.

在其他實施例中,改善顯示區域B邊緣處的出光效果還可藉由採用具有高反射率的反射層340同時配合微結構314密度的調整來達成。如圖3所示之顯示裝置100另一實施例。在圖3中可以注意到顯示裝置100中可以進一步省去反射膜350以增加空間運用上的彈性。在此實施例,導光板310中的微結構314呈均勻分布,例如圖3採用的是微結構314皆調整為較密的方式,而夾層空間內則設置具有高反射率的反射層340,藉由反射層340與微結構314的配合來調整顯示區域B邊緣處的出光效果。因此,反射層340不僅可增加結構支撐,還可改善出光效果,另一方面,具有高反射率之反射層340與微結構314分布密度的調整還可移除一部或全部的反射膜350,進而增加顯示裝置100內部可運用的空間。In other embodiments, improving the light-emitting effect at the edge of the display region B can also be achieved by using a reflective layer 340 having a high reflectivity while simultaneously adjusting the density of the microstructure 314. Another embodiment of the display device 100 is shown in FIG. It can be noted in FIG. 3 that the reflective film 350 can be further omitted in the display device 100 to increase the flexibility in space utilization. In this embodiment, the microstructures 314 in the light guide plate 310 are uniformly distributed. For example, in FIG. 3, the microstructures 314 are all adjusted to be dense, and in the interlayer space, the reflective layer 340 having high reflectivity is disposed. The light-emitting effect at the edge of the display area B is adjusted by the cooperation of the reflective layer 340 and the microstructure 314. Therefore, the reflective layer 340 can not only increase the structural support, but also improve the light-emitting effect. On the other hand, the adjustment of the distribution density of the reflective layer 340 and the microstructure 314 having high reflectivity can also remove one or all of the reflective film 350. Further, the space available inside the display device 100 is increased.

圖4為本發明顯示裝置100之另一實施例示意圖。圖4所示顯示裝置100之結構大致如前所述。不同之處在於,在此實施例中,反射層340之頂面342與導光板310底面312之距離較外環部322表面與導光板310底面312之距離大;換言之,在圖4所示之剖面上,反射層340之頂面係低於外環部322之表面高度。如圖4所示,反射層340填入部分夾層空間330。在此實施例中,採用反射層340之光反射率大於外環部322表面之光反射率。另一方面,為避免薄化後的反射膜350造成反射效果不佳的情況,反射層340之光反射率較佳係採用大於反射膜350之光反射率,且/或反射層340之光穿透率係小於反射膜350之光穿透率,藉此設置方式可提升顯示區域B邊緣處的亮度。4 is a schematic diagram of another embodiment of a display device 100 of the present invention. The structure of the display device 100 shown in Fig. 4 is substantially as described above. The difference is that, in this embodiment, the distance between the top surface 342 of the reflective layer 340 and the bottom surface 312 of the light guide plate 310 is greater than the distance between the surface of the outer ring portion 322 and the bottom surface 312 of the light guide plate 310; in other words, as shown in FIG. In the cross section, the top surface of the reflective layer 340 is lower than the surface height of the outer ring portion 322. As shown in FIG. 4, the reflective layer 340 fills a portion of the sandwich space 330. In this embodiment, the light reflectance of the reflective layer 340 is greater than the light reflectance of the outer ring portion 322 surface. On the other hand, in order to avoid the reflection effect of the thinned reflective film 350, the light reflectance of the reflective layer 340 is preferably greater than that of the reflective film 350, and/or the light of the reflective layer 340 is worn. The transmittance is smaller than the light transmittance of the reflective film 350, whereby the brightness at the edge of the display area B can be improved by the arrangement.

本發明已由上述相關實施例加以描述,然而上述實施例僅為實施本發明之範例。必需指出的是,已揭露之實施例並未限制本發明之範圍。相反地,包含於申請專利範圍之精神及範圍之修改及均等設置均包含於本發明之範圍內。The present invention has been described by the above-described related embodiments, but the above embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, modifications and equivalents of the spirit and scope of the invention are included in the scope of the invention.

100‧‧‧顯示裝置100‧‧‧ display device

200‧‧‧顯示面板200‧‧‧ display panel

202‧‧‧顯示面板之外表面202‧‧‧Display panel exterior surface

300‧‧‧背光模組300‧‧‧Backlight module

310‧‧‧導光板310‧‧‧Light guide plate

312‧‧‧底面312‧‧‧ bottom

314‧‧‧微結構314‧‧‧Microstructure

320‧‧‧背板320‧‧‧ Backplane

321‧‧‧凹陷部321‧‧‧Depression

322‧‧‧外環部322‧‧‧Outer Rings

323‧‧‧外環部之外表面323‧‧‧Outer surface of the outer ring

324‧‧‧內環部324‧‧‧ Inner Ring Department

326‧‧‧側壁326‧‧‧ side wall

330‧‧‧夾層空間330‧‧‧Mezzanine space

340‧‧‧反射層340‧‧‧reflective layer

342‧‧‧頂面342‧‧‧ top surface

350‧‧‧反射膜350‧‧‧Reflective film

400‧‧‧定位膠帶400‧‧‧Positioning tape

B‧‧‧顯示區域B‧‧‧Display area

C‧‧‧中空區域C‧‧‧ hollow area

圖1A及圖1B為傳統顯示裝置之示意圖;圖2A為本發明顯示裝置之實施例示意圖;圖2B為本發明背板與反射層位置關係示意圖;圖3為本發明顯示裝置之另一實施例示意圖;圖4為本發明顯示裝置之另一實施例示意圖。1A and 1B are schematic views of a conventional display device; FIG. 2A is a schematic view showing a positional relationship between a back plate and a reflective layer according to the present invention; FIG. 3 is a schematic view showing another embodiment of the display device of the present invention; FIG. 4 is a schematic view of another embodiment of a display device of the present invention.

100‧‧‧顯示裝置100‧‧‧ display device

200‧‧‧顯示面板200‧‧‧ display panel

202‧‧‧顯示面板之外表面202‧‧‧Display panel exterior surface

300‧‧‧背光模組300‧‧‧Backlight module

310‧‧‧導光板310‧‧‧Light guide plate

312‧‧‧底面312‧‧‧ bottom

314‧‧‧微結構314‧‧‧Microstructure

320‧‧‧背板320‧‧‧ Backplane

321‧‧‧凹陷部321‧‧‧Depression

322‧‧‧外環部322‧‧‧Outer Rings

323‧‧‧外環部之外表面323‧‧‧Outer surface of the outer ring

324‧‧‧內環部324‧‧‧ Inner Ring Department

326‧‧‧側壁326‧‧‧ side wall

330‧‧‧夾層空間330‧‧‧Mezzanine space

340‧‧‧反射層340‧‧‧reflective layer

342‧‧‧頂面342‧‧‧ top surface

350‧‧‧反射膜350‧‧‧Reflective film

400‧‧‧定位膠帶400‧‧‧Positioning tape

B‧‧‧顯示區域B‧‧‧Display area

Claims (13)

一種背光模組,包含:一導光板,具有一底面;一背板,係支撐該底面之邊緣;其中,該背板具有一外環部及一內環部,該外環部係平行該底面並支撐該底面之邊緣;該內環部係自該外環部朝該導光板中心方向延伸,且與該底面間夾有一夾層空間;一反射層,設置於該內環部朝向該底面之一面上,並填充至少部分之該夾層空間;以及一反射膜,設置於該底面上,該外環部係支撐該反射膜以間接支撐該底面;其中該反射層係位於該反射膜及該內環部之間。 A backlight module includes: a light guide plate having a bottom surface; a back plate supporting an edge of the bottom surface; wherein the back plate has an outer ring portion and an inner ring portion, the outer ring portion is parallel to the bottom surface And supporting the edge of the bottom surface; the inner ring portion extends from the outer ring portion toward the center of the light guide plate, and has a sandwich space between the bottom surface; and a reflective layer disposed on the inner ring portion facing the bottom surface And filling at least a portion of the interlayer space; and a reflective film disposed on the bottom surface, the outer ring portion supporting the reflective film to indirectly support the bottom surface; wherein the reflective layer is located in the reflective film and the inner ring Between the ministries. 如請求項1所述之背光模組,其中該內環部及該反射層共同圍成一中空區域。 The backlight module of claim 1, wherein the inner ring portion and the reflective layer together form a hollow region. 如請求項2所述之背光模組,其中該底面上形成有複數微結構,該中空區域於該底面上投影範圍之該微結構分佈密度大於該內環部於該底面上投影範圍之該微結構分佈密度。 The backlight module of claim 2, wherein the bottom surface is formed with a plurality of microstructures, the microstructure distribution density of the hollow region on the bottom surface is larger than the projection range of the inner ring portion on the bottom surface Structure distribution density. 如請求項1所述之背光模組,其中該反射層之頂面係與該外環部支撐該底面之表面齊平。 The backlight module of claim 1, wherein a top surface of the reflective layer is flush with a surface of the outer ring portion supporting the bottom surface. 如請求項4所述之背光模組,其中該反射層之光反射率與該外環部表面之光反射率相同。 The backlight module of claim 4, wherein the reflective layer has the same light reflectivity as the surface of the outer ring portion. 如請求項1所述之背光模組,其中該反射層之頂面與該底面之距離較該外環部表面與該底面之距離大;該反射層之光反射率大於該外環部表面之光反射率。 The backlight module of claim 1, wherein a distance between a top surface of the reflective layer and the bottom surface is greater than a distance between a surface of the outer ring portion and the bottom surface; a light reflectance of the reflective layer is greater than a surface of the outer ring portion Light reflectivity. 如請求項1所述之背光模組,其中該反射層之光反射率係大於 該反射膜之光反射率。 The backlight module of claim 1, wherein the reflective layer has a light reflectance greater than The light reflectance of the reflective film. 如請求項1所述之背光模組,其中該反射層之光穿透率係小於該反射膜之光穿透率。 The backlight module of claim 1, wherein the reflective layer has a light transmittance that is less than a light transmittance of the reflective film. 如請求項1所述之背光模組,其中該反射層係藉由支撐該反射膜間接支撐該導光板。 The backlight module of claim 1, wherein the reflective layer indirectly supports the light guide plate by supporting the reflective film. 一種顯示裝置,包含:如請求項1至請求項9中任一所述之背光模組;以及一顯示面板,設置於該導光板背向該底面之一側;其中,該顯示面板具有一顯示區域,該內環部於該顯示面板上之投影範圍係位於該顯示區域之邊緣。 A display device, comprising: a backlight module according to any one of claims 1 to 9; and a display panel disposed on a side of the light guide plate facing away from the bottom surface; wherein the display panel has a display The area, the projection range of the inner ring on the display panel is located at the edge of the display area. 如請求項10所述之顯示裝置,其中該背板包含一側壁連接該外環部相對於該內環部之反側,該側壁係包圍該顯示裝置之外側。 The display device of claim 10, wherein the back panel comprises a side wall connecting the opposite side of the outer ring portion with respect to the inner ring portion, the side wall surrounding the outer side of the display device. 如請求項11所述之顯示裝置,進一步包含一定位膠帶貼合於該側壁之外表面;其中,該定位膠帶之兩側分別突出於該側壁,一側彎折連接該顯示面板相反於該背光模組之外表面,另一側則彎折連接該外環部之外表面。 The display device of claim 11, further comprising a positioning tape attached to the outer surface of the side wall; wherein two sides of the positioning tape respectively protrude from the side wall, and one side is bent and connected to the display panel opposite to the backlight The outer surface of the module is bent to connect the outer surface of the outer ring portion. 如請求項12所述之顯示裝置,其中該內環部之外表面係突出於該外環部之內表面以在該外環部外側形成一凹陷區,該定位膠帶連接該外環部外表面之部分係容納於該凹陷部。The display device of claim 12, wherein the outer surface of the inner ring portion protrudes from an inner surface of the outer ring portion to form a recessed portion outside the outer ring portion, the positioning tape connecting the outer surface of the outer ring portion A portion is housed in the recess.
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