TW202024730A

TW202024730A - Backlight module

Info

Publication number: TW202024730A
Application number: TW107146010A
Authority: TW
Inventors: 郭漢斌; 鄭文琳
Original assignee: 友達光電股份有限公司
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2020-07-01
Also published as: CN109493731B; TWI681231B; CN109493731A

Abstract

A backlight module includes a back frame, an upper frame and a support plate. The back frame has a bottom plate and a first positioning wall. The first positioning wall is standing on a upper surface of the bottom plate and adjacent to a first edge of the bottom plate. In the vertical projection direction of the bottom plate, there is a gap between the vertical projection of an outer surface of the first positioning wall and the vertical projection of the first edge of the bottom plate. An accommodating portion is formed between the outer surface of the first positioning wall and the first edge of the bottom plate. The upper frame has a top cover and a retaining wall. The retaining wall connects a lower surface of the top cover. At least a portion of the retaining wall is located outside the outer surface of the first positioning wall and the retaining wall abuts the back frame. The retaining wall extends into the accommodating portion. The support plate is located in a space between the bottom plate and the top cover, wherein an upper surface of the first positioning wall is not beyond an extended surface of an upper surface of the support plate.

Description

背光模組Backlight module

本發明係關於一種背光模組，特別是一種窄邊框的背光模組。The present invention relates to a backlight module, especially a backlight module with a narrow frame.

目前的顯示裝置設計趨勢由以往的體積龐大、厚重的外型朝向薄型化以及輕量化的方向發展，而且背光模組的邊框的厚度漸漸趨向窄邊框的設計，使得背光模組邊框的體積縮小且在相同尺寸顯示裝置下，顯示面板所能觀賞的顯示畫面的面積更大，視覺效果更好。The current design trend of display devices has evolved from the previous bulky, heavy appearance to thinner and lighter weight, and the thickness of the frame of the backlight module gradually tends to be narrower, which reduces the volume of the frame of the backlight module. Under the same size display device, the area of the display screen that can be viewed by the display panel is larger and the visual effect is better.

一般而言，習知的背光模組係為上框設置於背框之上，而光學膜片位於上框的頂蓋與背框的底板之間的空間。不過，對於習知的背光模組而言，由於光學膜片受溫度改變而會有脹縮的情況，恐導致光學膜片抵接到背框的側邊而產生皺折，進而影響顯示品質。Generally speaking, in the conventional backlight module, the upper frame is arranged on the back frame, and the optical film is located in the space between the top cover of the upper frame and the bottom plate of the back frame. However, for the conventional backlight module, the optical film may expand and contract due to temperature changes, which may cause the optical film to abut against the side of the back frame and cause wrinkles, thereby affecting the display quality.

本發明一實施例提出一種背光模組，包括背框、上框以及支撐板。背框具有底板及第一限位壁。第一限位壁立於底板的上表面上且鄰近底板的第一邊緣。於底板的垂直投影方向上，第一限位壁的外表面的垂直投影與底板的第一邊緣的垂直投影之間具有間距。第一限位壁的外表面與底板的第一邊緣之間形成容置部。上框具有頂蓋及擋壁。擋壁連接頂蓋的下表面。至少部分擋壁位於第一限位壁的外表面的外側且擋壁抵接背框。擋壁伸入容置部，支撐板位於底板與頂蓋之間的空間，其中第一限位壁的上表面不越過支撐板的上表面的延伸面。An embodiment of the present invention provides a backlight module including a back frame, an upper frame, and a supporting plate. The back frame has a bottom plate and a first limiting wall. The first limiting wall stands on the upper surface of the bottom plate and is adjacent to the first edge of the bottom plate. In the vertical projection direction of the bottom plate, there is a distance between the vertical projection of the outer surface of the first limiting wall and the vertical projection of the first edge of the bottom plate. An accommodating portion is formed between the outer surface of the first limiting wall and the first edge of the bottom plate. The upper frame has a top cover and a retaining wall. The blocking wall is connected to the lower surface of the top cover. At least part of the blocking wall is located outside the outer surface of the first limiting wall and the blocking wall abuts against the back frame. The blocking wall extends into the accommodating part, the supporting plate is located in the space between the bottom plate and the top cover, and the upper surface of the first limiting wall does not cross the extension surface of the upper surface of the supporting plate.

綜上所述，本發明實施例之背光模組，藉由擋壁伸入第一限位壁的外表面與底板的第一邊緣之間所形成的容置部並且能夠抵接背框，使得至少部份的擋壁可以內縮至底板的範圍內。相較於習知背光模組而言，本發明實施例至少能夠省略擋壁的部分厚度。此外，由於第一限位壁的上表面低於或等於支撐板的上表面的延伸面，對於位在支撐板上方的光學膜片而言，留有較大的側向延伸空間，如此，在背光模組長期使用下、或因環境條件下，光學膜片膨脹側向伸展時，並不會抵接到上框。In summary, in the backlight module of the embodiment of the present invention, the retaining wall extends into the accommodating portion formed between the outer surface of the first limiting wall and the first edge of the bottom plate and can abut the back frame, so that At least part of the retaining wall can be retracted into the range of the bottom plate. Compared with the conventional backlight module, the embodiment of the present invention can omit at least part of the thickness of the blocking wall. In addition, since the upper surface of the first limiting wall is lower than or equal to the extension surface of the upper surface of the support plate, for the optical film located above the support plate, a larger lateral extension space is left. When the backlight module is used for a long time or under environmental conditions, when the optical film expands laterally, it will not abut the upper frame.

圖1為具有本發明一實施例的背光模組100的顯示裝置1的外觀示意圖。圖2為圖1的顯示裝置1中以A-A為剖線的剖面示意圖。請參閱圖1及圖2，顯示裝置1包含背光模組100與顯示面板200。背光模組100包括背框110、上框120以及支撐板130。背框110與上框120結合，而支撐板130位於背框110與上框120之間的空間S。FIG. 1 is a schematic diagram of the appearance of a display device 1 having a backlight module 100 according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the display device 1 of FIG. 1 taken along the line A-A. Please refer to FIGS. 1 and 2, the display device 1 includes a backlight module 100 and a display panel 200. The backlight module 100 includes a back frame 110, an upper frame 120 and a supporting plate 130. The back frame 110 is combined with the upper frame 120, and the support plate 130 is located in the space S between the back frame 110 and the upper frame 120.

背框110具有底板111及至少一個連接於底板111的限位壁112（如圖2所繪示之第一限位壁1121）。第一限位壁1121立於底板111的上表面111a上，且第一限位壁1121鄰近底板111的第一邊緣L1。於底板111的垂直投影方向D1上，第一限位壁1121的外表面1121c的垂直投影與底板111的第一邊緣L1的垂直投影之間具有間距F。因此，第一限位壁1121的外表面1121c的垂直投影並未與底板111的第一邊緣L1的垂直投影重疊。也就是說，第一限位壁1121的外表面1121c並未與底板111的第一邊緣L1切齊。第一限位壁1121的外表面1121c與底板111的第一邊緣L1之間形成容置部H。也就是說，容置部H係由第一限位壁1121的外表面1121c以及由外表面1121c至第一邊緣L1之間的部分底板111所構成。The back frame 110 has a bottom plate 111 and at least one limiting wall 112 connected to the bottom plate 111 (the first limiting wall 1121 shown in FIG. 2 ). The first limiting wall 1121 stands on the upper surface 111 a of the bottom plate 111, and the first limiting wall 1121 is adjacent to the first edge L1 of the bottom plate 111. In the vertical projection direction D1 of the bottom plate 111, there is a gap F between the vertical projection of the outer surface 1121c of the first limiting wall 1121 and the vertical projection of the first edge L1 of the bottom plate 111. Therefore, the vertical projection of the outer surface 1121c of the first limiting wall 1121 does not overlap with the vertical projection of the first edge L1 of the bottom plate 111. In other words, the outer surface 1121c of the first limiting wall 1121 is not aligned with the first edge L1 of the bottom plate 111. An accommodating portion H is formed between the outer surface 1121c of the first limiting wall 1121 and the first edge L1 of the bottom plate 111. In other words, the accommodating portion H is formed by the outer surface 1121c of the first limiting wall 1121 and the part of the bottom plate 111 between the outer surface 1121c and the first edge L1.

上框120具有頂蓋121及擋壁122。擋壁122連接頂蓋121的下表面121b。頂蓋121可用以承載顯示面板200。至少部分擋壁122位於第一限位壁1121的外表面1121c的外側。擋壁122抵接背框110，且擋壁122伸入容置部H。換言之，擋壁122往底板111方向延伸而越過第一限位壁1121的上表面1121a，以延伸至容置部H。於此，於底板111的垂直投影方向D1上，擋壁122的垂直投影至少部分與底板111的垂直投影重疊。換言之，至少部份的擋壁122可以內縮至底板111的範圍內。於一實施態樣中，如圖2所繪示，於底板111的垂直投影方向D1上，擋壁122的厚度T小於或等於間距F，於此，擋壁122的垂直投影並未超過第一邊緣L1的垂直投影且全部的擋壁122可以內縮至底板111的範圍內。於另一實施態樣（圖未繪示）中，擋壁122的厚度T大於間距F，於此，於底板111的垂直投影方向D1上，擋壁122的垂直投影可約略超過第一邊緣L1的垂直投影且部份的擋壁122可以內縮至底板111的範圍內。The upper frame 120 has a top cover 121 and a blocking wall 122. The blocking wall 122 is connected to the lower surface 121 b of the top cover 121. The top cover 121 can be used to carry the display panel 200. At least part of the blocking wall 122 is located outside the outer surface 1121 c of the first limiting wall 1121. The blocking wall 122 abuts the back frame 110, and the blocking wall 122 extends into the receiving portion H. In other words, the blocking wall 122 extends toward the bottom plate 111 and crosses the upper surface 1121 a of the first limiting wall 1121 to extend to the receiving portion H. Here, in the vertical projection direction D1 of the bottom plate 111, the vertical projection of the blocking wall 122 at least partially overlaps the vertical projection of the bottom plate 111. In other words, at least part of the blocking wall 122 can be retracted into the range of the bottom plate 111. In one embodiment, as shown in FIG. 2, in the vertical projection direction D1 of the bottom plate 111, the thickness T of the barrier wall 122 is less than or equal to the pitch F. Here, the vertical projection of the barrier wall 122 does not exceed the first The vertical projection of the edge L1 and all the blocking walls 122 can be retracted into the range of the bottom plate 111. In another embodiment (not shown in the figure), the thickness T of the barrier wall 122 is greater than the pitch F. Here, in the vertical projection direction D1 of the bottom plate 111, the vertical projection of the barrier wall 122 may slightly exceed the first edge L1 Part of the blocking wall 122 can be retracted into the range of the bottom plate 111.

支撐板130位於背框110的底板111與上框120的頂蓋121之間的空間S，第一限位壁1121的上表面1121a低於或等於支撐板130的上表面130a的延伸面E1。也就是說第一限位壁1121往頂蓋121方向延伸且第一限位壁1121的上表面1121a未越過支撐板130的上表面130a的延伸面E1。在本實施例中，支撐板130可為導光板130，第一限位壁1121限制導光板130於空間S中的位置。而在一些實施例中，支撐板130可為擴散板。The support plate 130 is located in the space S between the bottom plate 111 of the back frame 110 and the top cover 121 of the upper frame 120. The upper surface 1121 a of the first limiting wall 1121 is lower than or equal to the extension surface E1 of the upper surface 130 a of the support plate 130. That is to say, the first limiting wall 1121 extends toward the top cover 121 and the upper surface 1121 a of the first limiting wall 1121 does not cross the extension surface E1 of the upper surface 130 a of the supporting plate 130. In this embodiment, the supporting plate 130 may be a light guide plate 130, and the first limiting wall 1121 restricts the position of the light guide plate 130 in the space S. In some embodiments, the support plate 130 may be a diffuser plate.

於此，藉由擋壁122可以伸入第一限位壁1121的外表面1121c與底板111的第一邊緣L1之間所形成的容置部H並且能夠抵接背框110，使得至少部份的擋壁122可以內縮至底板111的範圍內，以至少省略擋壁122的部分厚度。Here, the retaining wall 122 can extend into the accommodating portion H formed between the outer surface 1121c of the first limiting wall 1121 and the first edge L1 of the bottom plate 111 and can abut the back frame 110, so that at least part of The blocking wall 122 can be retracted into the range of the bottom plate 111 to omit at least part of the thickness of the blocking wall 122.

第一限位壁1121的上表面1121a與頂蓋121的下表面121b之間可具有距離。換言之，第一限位壁1121的上表面1121a並未抵接頂蓋121的下表面121b。於此，上框120可以透過不同擋壁122的實施例來與背框110抵接。There may be a distance between the upper surface 1121 a of the first limiting wall 1121 and the lower surface 121 b of the top cover 121. In other words, the upper surface 1121 a of the first limiting wall 1121 does not abut the lower surface 121 b of the top cover 121. Here, the upper frame 120 can abut against the back frame 110 through different embodiments of the blocking wall 122.

於擋壁122之一實施例中，如圖2所繪示，擋壁122往底板111方向延伸且擋壁122的下表面122b接觸背框110的底板111。藉此，擋壁122的下表面122b可以抵接於背框110的底板111。In an embodiment of the blocking wall 122, as shown in FIG. 2, the blocking wall 122 extends toward the bottom plate 111 and the lower surface 122 b of the blocking wall 122 contacts the bottom plate 111 of the back frame 110. Thereby, the lower surface 122 b of the blocking wall 122 can abut against the bottom plate 111 of the back frame 110.

請參閱圖3，為本發明一實施例的背光模組100的側視示意圖。在此實施例中，如圖3所繪示，由背光模組100的側面觀之，擋壁122的下表面122b為平面且底板111的上表面111a為平面，擋壁122的下表面122b可以抵接底板111的上表面111a。Please refer to FIG. 3, which is a schematic side view of a backlight module 100 according to an embodiment of the present invention. In this embodiment, as shown in FIG. 3, viewed from the side of the backlight module 100, the lower surface 122b of the blocking wall 122 is flat and the upper surface 111a of the bottom plate 111 is flat. The bottom surface 122b of the blocking wall 122 can be Abut the upper surface 111a of the bottom plate 111.

請參閱圖4，為本發明另一實施例的背光模組100的側視示意圖。於此實施例中，如圖4所繪示，由背光模組100的側面觀之，擋壁122的下表面122b具有至少一凹口N。凹口N具有凹槽面N1，且凹槽面N1凹陷於擋壁122的下表面122b。底板111可以具有至少一凸部E，且凸部E的位置及數量對應凹口N的位置及數量。凹口N的凹槽面N1抵接底板111的凸部E。Please refer to FIG. 4, which is a schematic side view of a backlight module 100 according to another embodiment of the present invention. In this embodiment, as shown in FIG. 4, as viewed from the side of the backlight module 100, the lower surface 122b of the blocking wall 122 has at least one notch N. The notch N has a groove surface N1, and the groove surface N1 is recessed on the lower surface 122b of the blocking wall 122. The bottom plate 111 may have at least one protrusion E, and the position and number of the protrusion E correspond to the position and number of the notch N. The groove surface N1 of the notch N abuts the convex portion E of the bottom plate 111.

請參閱圖5，為本發明又一實施例的背光模組100的側視示意圖。於此實施例中，如圖5所繪示，擋壁122的下表面122b的邊緣例如形成至少一倒角（chamfer）C，倒角C的倒角面面對於第一限位壁1121的外表面1121c。Please refer to FIG. 5, which is a schematic side view of a backlight module 100 according to another embodiment of the present invention. In this embodiment, as shown in FIG. 5, the edge of the lower surface 122b of the blocking wall 122 forms, for example, at least one chamfer C, and the chamfered surface of the chamfer C faces the outer surface of the first limiting wall 1121. Surface 1121c.

請參閱圖6A至圖6B，圖6A為對應於圖1所示實施例中以A-A為剖線的另一實施例的顯示裝置1的剖面示意圖。圖6B為圖6A所示實施例的上框局部立體示意圖。在此實施例中，擋壁122例如更包括折片1221，折片1221位於底板111與頂蓋121之間的空間S。折片1121例如由擋壁122的一部分沖孔後彎折而成，折片1121與擋壁122未彎折的部分之間實質垂直，且折片1221由擋壁122未彎折的部分朝向支撐板130的方向延伸並抵接於第一限位壁1121的上表面1121a。於此，藉由折片1221，擋壁122可以抵接於背框110的第一限位壁1121的上表面1121a。於此一實施例中，如圖6A所繪示，擋壁122的下表面122b的延伸面例如介於底板111的上表面111a及第一限位壁1121的上表面1121a之間。也就是說，擋壁122的下表面122b並未抵接於背框110的底板111，於此，擋壁122可僅藉由折片1221來抵接於背框110。Please refer to FIGS. 6A to 6B. FIG. 6A is a schematic cross-sectional view of the display device 1 corresponding to another embodiment in the embodiment shown in FIG. 1 with A-A as the cross-sectional line. Fig. 6B is a partial perspective view of the upper frame of the embodiment shown in Fig. 6A. In this embodiment, the blocking wall 122 further includes a flap 1221, for example, and the flap 1221 is located in the space S between the bottom plate 111 and the top cover 121. The flap 1121 is formed by punching a part of the retaining wall 122 and then bending it. The flap 1121 and the unbent portion of the retaining wall 122 are substantially perpendicular to each other, and the flap 1221 is supported by the unbent portion of the retaining wall 122 toward the support. The plate 130 extends in the direction and abuts against the upper surface 1121 a of the first limiting wall 1121. Here, with the folding piece 1221, the blocking wall 122 can abut against the upper surface 1121a of the first limiting wall 1121 of the back frame 110. In this embodiment, as shown in FIG. 6A, the extension surface of the lower surface 122 b of the blocking wall 122 is, for example, between the upper surface 111 a of the bottom plate 111 and the upper surface 1121 a of the first limiting wall 1121. In other words, the lower surface 122 b of the blocking wall 122 does not abut the bottom plate 111 of the back frame 110. Here, the blocking wall 122 can abut against the back frame 110 only by the flap 1221.

於擋壁122之另一變化實施例中，如圖7所繪示，擋壁122往底板111方向延伸且擋壁122的下表面122b接觸背框110的底板111，且折片1221抵接於第一限位壁1121的上表面1121a。於此，擋壁122的下表面122b可以抵接於背框110的底板111且藉由折片1221的設置，擋壁122可以支撐於背框110的第一限位壁1121上。In another modified embodiment of the blocking wall 122, as shown in FIG. 7, the blocking wall 122 extends in the direction of the bottom plate 111 and the lower surface 122b of the blocking wall 122 contacts the bottom plate 111 of the back frame 110, and the flap 1221 abuts against The upper surface 1121 a of the first limiting wall 1121. Here, the lower surface 122b of the blocking wall 122 can abut against the bottom plate 111 of the back frame 110 and with the arrangement of the flap 1221, the blocking wall 122 can be supported on the first limiting wall 1121 of the back frame 110.

請再參閱圖2，在此實施例中，背光模組100可更包括光學膜片140。光學膜片140位於支撐板130(如導光板)的上表面130a上。第一限位壁1121的上表面1121a低於光學膜片140的下表面140b的延伸面，於此，第一限位壁1121並不會介入光學膜片140的側表面140c與擋壁122的內表面122c之間的間隙P，所以，可以透過降低第一限位壁1121的高度，使得第一限位壁1121不超過支撐板130的上表面130a的延伸面E1，而讓光學膜片140與擋壁122之間形成間隙P來容納光學膜片140可能於組裝時產生組裝公差或是因受溫度變化而產生的膨縮量。另外，圖1所繪示的光學膜片140的數量僅為一片，不過，於其他實施例中，光學膜片140的數量也可以是多片。於一實施例中，此些光學膜片140可例如是但不限於擴散片、反射片、集光片或複合功能的光學膜片等。Please refer to FIG. 2 again. In this embodiment, the backlight module 100 may further include an optical film 140. The optical film 140 is located on the upper surface 130a of the support plate 130 (such as a light guide plate). The upper surface 1121a of the first limiting wall 1121 is lower than the extension surface of the lower surface 140b of the optical film 140. Here, the first limiting wall 1121 does not interfere with the side surface 140c of the optical film 140 and the blocking wall 122 The gap P between the inner surfaces 122c can be reduced by reducing the height of the first limiting wall 1121 so that the first limiting wall 1121 does not exceed the extension surface E1 of the upper surface 130a of the support plate 130, so that the optical film 140 A gap P is formed between the blocking wall 122 and the optical film 140 to accommodate the assembly tolerance or the expansion and contraction caused by temperature changes during assembly. In addition, the number of optical films 140 shown in FIG. 1 is only one piece. However, in other embodiments, the number of optical films 140 may also be multiple. In one embodiment, the optical films 140 may be, for example, but not limited to, diffusers, reflectors, light-collecting films, or optical films with multiple functions.

圖8為本發明一實施例的背光模組100的俯視示意圖。須說明的是，為清楚顯示各元件的連接關係，於此省略了上框120的頂蓋121、支撐板130、光學膜片140與光源150，因此可顯示出限位壁112與擋壁122之間的配置情況。請參閱圖8，背框110例如具有四個限位壁112（於此為第一限位壁1121、第二限位壁1122、第三限位壁1123以及第四限位壁1124）。這些第一限位壁1121、第二限位壁1122、第三限位壁1123以及第四限位壁1124分別圍繞於支撐板130（於此圖省略繪示）的四周，並且形成矩形框，該等限位壁112形成所述矩形框可以是限位壁112彼此相連接的方式達成或是彼此不相連接的方式達成，然而，本發明並無限制。上框120具有四個擋壁122，且這些擋壁122分別圍繞於四個限位壁112（於此為第一限位壁1121、第二限位壁1122、第三限位壁1123以及第四限位壁1124）的四周且位於容置部H，並且彼此形成矩形框，同樣的，該等擋壁122可以彼此相連接地形成所述矩形框或是彼此不相連接地形成所述矩形框，然而，本發明並無限制。於此實施例中，於底板111的垂直投影方向D1上，擋壁122的厚度T小於間距F，於此，擋壁122的垂直投影並未超過底板111的垂直投影且全部的擋壁122可以內縮至底板111的範圍內。FIG. 8 is a schematic top view of a backlight module 100 according to an embodiment of the invention. It should be noted that, in order to clearly show the connection relationship of the components, the top cover 121, the support plate 130, the optical film 140 and the light source 150 of the upper frame 120 are omitted here, so the limiting wall 112 and the blocking wall 122 can be displayed. The configuration situation between. Referring to FIG. 8, the back frame 110 has, for example, four limiting walls 112 (herein, a first limiting wall 1121, a second limiting wall 1122, a third limiting wall 1123, and a fourth limiting wall 1124). The first limiting wall 1121, the second limiting wall 1122, the third limiting wall 1123, and the fourth limiting wall 1124 respectively surround the periphery of the support plate 130 (illustration omitted in this figure) and form a rectangular frame, The restricting walls 112 forming the rectangular frame can be achieved by connecting the restricting walls 112 with each other or without connecting with each other. However, the present invention is not limited. The upper frame 120 has four blocking walls 122, and these blocking walls 122 respectively surround the four limiting walls 112 (herein, the first limiting wall 1121, the second limiting wall 1122, the third limiting wall 1123, and the second limiting wall 1123). The four limiting walls 1124) are located around the accommodating portion H and form a rectangular frame with each other. Similarly, the blocking walls 122 may be connected to each other to form the rectangular frame or be disconnected from each other to form the rectangular frame, However, the present invention is not limited. In this embodiment, in the vertical projection direction D1 of the bottom plate 111, the thickness T of the blocking wall 122 is less than the pitch F. Here, the vertical projection of the blocking wall 122 does not exceed the vertical projection of the bottom plate 111 and all the blocking walls 122 can Retracted within the scope of the bottom plate 111.

請參閱圖9以及圖10A，圖9為本發明一實施例的背光模組100的俯視示意圖。圖10A為對應於圖9之B-B剖線的背光模組100的剖面示意圖。須說明的是，為清楚顯示各元件的連接關係，於此省略了上框120的頂蓋121、支撐板130與光學膜片140，因此可顯示出限位壁112、側壁113與擋壁122之間的配置情況。背框110可以更具有至少一側壁113，且側壁113的兩端與限位壁112相接。所述的相接可以為連接、相鄰或是一體成型的關係，本發明並無限制。側壁113立於底板111的上表面111a上且對應底板111的第二邊緣L2設置。於底板111的垂直投影方向D1上，側壁113的外表面113c的垂直投影與底板111的第二邊緣L2的垂直投影重疊。也就是說，側壁113的外表面113c與底板111的第二邊緣L2切齊，而未具有間距。於此實施例中，如圖9以及圖10A所示，背框110例如具有三個限位壁112（於此為第一限位壁1121、第二限位壁1122以及第三限位壁1123）以及一個側壁113。這些第一限位壁1121、第二限位壁1122、第三限位壁1123以及側壁113分別圍繞於支撐板130（於此圖省略繪示）的四周，並且彼此形成矩形框。上框120具有四個擋壁122，且這些擋壁122分別圍繞於三個限位壁112（於此為第一限位壁1121、第二限位壁1122以及第三限位壁1123）以及一個側壁113的四周，並且彼此形成矩形框。須說明的是，容置部H例如係形成於第一限位壁1121的外表面1121c、第二限位壁1122的外表面1122c及第三限位壁1123的外表面1123c分別與底板111的各第一邊緣L1之間。由於側壁113的外表面113c與底板111的第二邊緣L2切齊而未具有間距，所以對應側壁113的擋壁122係接近（或貼合）側壁113的外表面113c。於此，於底板111的垂直投影方向D1上，擋壁122的垂直投影超過底板111的垂直投影之外。Please refer to FIGS. 9 and 10A. FIG. 9 is a schematic top view of a backlight module 100 according to an embodiment of the present invention. 10A is a schematic cross-sectional view of the backlight module 100 corresponding to the B-B section line of FIG. 9. It should be noted that in order to clearly show the connection relationship of the components, the top cover 121 of the upper frame 120, the support plate 130 and the optical film 140 are omitted here, so the limiting wall 112, the side wall 113 and the blocking wall 122 can be shown. The configuration situation between. The back frame 110 may further have at least one side wall 113, and both ends of the side wall 113 are connected with the limiting wall 112. The connection may be connected, adjacent or integrally formed, and the present invention is not limited. The side wall 113 stands on the upper surface 111 a of the bottom plate 111 and is disposed corresponding to the second edge L2 of the bottom plate 111. In the vertical projection direction D1 of the bottom plate 111, the vertical projection of the outer surface 113c of the side wall 113 overlaps the vertical projection of the second edge L2 of the bottom plate 111. That is to say, the outer surface 113c of the side wall 113 is aligned with the second edge L2 of the bottom plate 111 without a distance. In this embodiment, as shown in FIGS. 9 and 10A, the back frame 110 has, for example, three limiting walls 112 (herein, the first limiting wall 1121, the second limiting wall 1122, and the third limiting wall 1123). ) And a side wall 113. The first limiting wall 1121, the second limiting wall 1122, the third limiting wall 1123, and the side wall 113 respectively surround the periphery of the support plate 130 (illustration omitted in this figure), and form a rectangular frame with each other. The upper frame 120 has four blocking walls 122, and these blocking walls 122 respectively surround three limiting walls 112 (herein, the first limiting wall 1121, the second limiting wall 1122, and the third limiting wall 1123) and One side wall 113 surrounds each other and forms a rectangular frame. It should be noted that, for example, the accommodating portion H is formed on the outer surface 1121c of the first limiting wall 1121, the outer surface 1122c of the second limiting wall 1122, and the outer surface 1123c of the third limiting wall 1123, respectively. Between each first edge L1. Since the outer surface 113c of the side wall 113 is aligned with the second edge L2 of the bottom plate 111 without a distance, the blocking wall 122 corresponding to the side wall 113 is close to (or attached to) the outer surface 113c of the side wall 113. Here, in the vertical projection direction D1 of the bottom plate 111, the vertical projection of the blocking wall 122 exceeds the vertical projection of the bottom plate 111.

於此實施例中，如圖10A所繪示，背光模組100更包括光源150，光源150設置在電路基板180上，電路基板180例如為硬性印刷電路板或是可撓性印刷電路板。側壁113與支撐板130(例如導光板)的最相近之側面之間的間距相較於限位壁112與支撐板130最相近之側面的間距來的大，因此側壁113與支撐板130的側面之間可所形成的空間能夠用以設置光源150並提供光源150混光距離。於此，光源150可以設置於側壁113與支撐板130之間。光源150可以是發光二極體（Light-Emitting Diode，LED）、微發光二極體(Micro Light-Emitting Diode，Micro LED)、有機發光二極體(Organic Light-Emitting Diode，OLED)、冷陰極螢光燈（Cold-Cathode Fluorescent Lamps，CCFLs）或電激發光元件（Electroluminescence， EL）。於此，背光模組100係以側邊入光式背光模組（side edge type backlight module）作為舉例說明，並非限定本發明。此外，背光模組100還包含反射片190，以圖10A所示的視角，反射片190概呈L狀，一部位於第一限位壁1121與支撐板130(例如導光板)之間，另一部則位在支撐板130以及底板111之間。In this embodiment, as shown in FIG. 10A, the backlight module 100 further includes a light source 150, which is disposed on a circuit substrate 180. The circuit substrate 180 is, for example, a rigid printed circuit board or a flexible printed circuit board. The distance between the side wall 113 and the closest side of the support plate 130 (for example, a light guide plate) is larger than the distance between the closest side of the limiting wall 112 and the supporting plate 130, so the side wall 113 and the side of the supporting plate 130 The space formed between the light source 150 can be used to set the light source 150 and provide the light mixing distance of the light source 150. Here, the light source 150 may be disposed between the side wall 113 and the supporting plate 130. The light source 150 can be a light-emitting diode (Light-Emitting Diode, LED), a micro light-emitting diode (Micro Light-Emitting Diode, Micro LED), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), or a cold cathode. Fluorescent lamps (Cold-Cathode Fluorescent Lamps, CCFLs) or electroluminescence elements (Electroluminescence, EL). Here, the backlight module 100 is illustrated by taking a side edge type backlight module as an example, which does not limit the present invention. In addition, the backlight module 100 further includes a reflective sheet 190. From the viewing angle shown in FIG. 10A, the reflective sheet 190 is generally L-shaped, one part is located between the first limiting wall 1121 and the supporting plate 130 (such as a light guide plate), and the other One part is located between the support plate 130 and the bottom plate 111.

請參閱圖10B，為具本發明的一實施例的背光模組100的顯示裝置1的剖面示意圖。與圖10A所示的實施例差異處之一在於，背光模組100包含直下式入光結構。背光模組100更包括支撐板160，如一種擴散板，其剛性較光學膜片140高，支撐板160位於底板111的頂蓋121之間，其中第一限位壁1121的上表面1121a低於或等於支撐板160的上表面160a的延伸面E2。光源150位於背框110的底板111與支撐板160(如擴散板)之間，在一實施例中，光源150設置在電路基板180上。此外，背光模組100還包括支撐元件170，位於底板111與支撐板160之間，且抵接支撐板160。在一些實施例中，支撐元件170例如由塑性材質所製成。光學膜片140位於支撐板160(如擴散板)的上表面160a上，第一限位壁1121的上表面1121a低於光學膜片140的下表面140b的延伸面。以此背光模組100的結構設計，光學膜片140不會因受熱膨脹而抵接到第一限位部1121。Please refer to FIG. 10B, which is a schematic cross-sectional view of a display device 1 with a backlight module 100 according to an embodiment of the present invention. One of the differences from the embodiment shown in FIG. 10A is that the backlight module 100 includes a direct light incident structure. The backlight module 100 further includes a supporting plate 160, such as a diffuser plate, which has higher rigidity than the optical film 140. The supporting plate 160 is located between the top covers 121 of the bottom plate 111, and the upper surface 1121a of the first limiting wall 1121 is lower than Or equal to the extension surface E2 of the upper surface 160 a of the support plate 160. The light source 150 is located between the bottom plate 111 of the back frame 110 and the supporting plate 160 (such as a diffuser plate). In one embodiment, the light source 150 is disposed on the circuit substrate 180. In addition, the backlight module 100 further includes a supporting element 170 located between the bottom plate 111 and the supporting plate 160 and abutting against the supporting plate 160. In some embodiments, the supporting element 170 is made of a plastic material, for example. The optical film 140 is located on the upper surface 160 a of the support plate 160 (such as a diffuser), and the upper surface 1121 a of the first limiting wall 1121 is lower than the extension surface of the lower surface 140 b of the optical film 140. With this structural design of the backlight module 100, the optical film 140 will not abut the first limiting portion 1121 due to thermal expansion.

請參閱圖11，為本發明另一實施例的背光模組100的俯視示意圖。須說明的是，為清楚顯示各元件的連接關係，於此省略了上框120的頂蓋121、支撐板130、光學膜片140與光源150，因此可顯示出限位壁112、側壁113與擋壁122之間的配置情況。背框110具有二相對限位壁112（於此為第一限位壁1121以及第二限位壁1122）以及二相對側壁113。這些第一限位壁1121、第二限位壁1122、以及二側壁113分別圍繞於支撐板130（於此圖省略繪示）的四周，並且彼此形成一矩形框。上框120具有四個擋壁122，且這些擋壁122分別圍繞於二個限位壁112（於此為第一限位壁1121以及第二限位壁1122）以及二個側壁113的四周，並且彼此形成一矩形框。須說明的是，容置部H係形成於第一限位壁1121的外表面1121c及第二限位壁1122的外表面1122c分別與底板111的各第一邊緣L1之間。由於側壁113的外表面113c與底板111的第二邊緣L2切齊而未具有間距，所以對應側壁113的擋壁122係接近（或貼合）側壁113的外表面113c。於此，於底板111的垂直投影方向D1上，擋壁122的垂直投影超過底板111的垂直投影之外。Please refer to FIG. 11, which is a schematic top view of a backlight module 100 according to another embodiment of the present invention. It should be noted that, in order to clearly show the connection relationship of the components, the top cover 121 of the upper frame 120, the support plate 130, the optical film 140 and the light source 150 are omitted here, so the limit wall 112, the side wall 113 and the The configuration between the barrier walls 122. The back frame 110 has two opposite limiting walls 112 (herein, a first limiting wall 1121 and a second limiting wall 1122) and two opposite side walls 113. The first limiting wall 1121, the second limiting wall 1122, and the two side walls 113 respectively surround the periphery of the support plate 130 (illustration omitted in this figure), and form a rectangular frame with each other. The upper frame 120 has four blocking walls 122, and these blocking walls 122 respectively surround the two limit walls 112 (herein, the first limit wall 1121 and the second limit wall 1122) and the two side walls 113, And form a rectangular frame with each other. It should be noted that the accommodating portion H is formed between the outer surface 1121c of the first limiting wall 1121 and the outer surface 1122c of the second limiting wall 1122 and the first edges L1 of the bottom plate 111, respectively. Since the outer surface 113c of the side wall 113 is aligned with the second edge L2 of the bottom plate 111 without a distance, the blocking wall 122 corresponding to the side wall 113 is close to (or attached to) the outer surface 113c of the side wall 113. Here, in the vertical projection direction D1 of the bottom plate 111, the vertical projection of the blocking wall 122 exceeds the vertical projection of the bottom plate 111.

上述中，形成矩形框的方式可以彼此相連接、相鄰但不連接等方式達成，然而，本發明並無限制。In the above, the manner of forming the rectangular frame can be achieved by connecting to each other, adjacent but not connected, etc. However, the present invention is not limited.

請參閱圖12，為具本發明一實施例的背光模組100的顯示裝置1的剖面示意圖。於此實施例中，側壁113的上表面113a越過支撐板130(如導光板)的上表面130a的延伸面E3。也就是說，側壁113往頂蓋121方向延伸且側壁113的上表面113a越過支撐板130的上表面130a的延伸面E3。於此實施例中，側壁113的上表面113a可以抵接頂蓋121的下表面121b。藉此，對應於底板111的第二邊緣L2側，可以藉由側壁113抵接頂蓋121使得上框120抵接於背框110，有助於結構強度。於此，背光模組100係以側邊入光式背光模組作為舉例說明，並非限定本發明，亦可用於直下入光式背光模組。Please refer to FIG. 12, which is a schematic cross-sectional view of a display device 1 with a backlight module 100 according to an embodiment of the present invention. In this embodiment, the upper surface 113a of the side wall 113 crosses the extension surface E3 of the upper surface 130a of the support plate 130 (such as the light guide plate). In other words, the side wall 113 extends toward the top cover 121 and the upper surface 113 a of the side wall 113 crosses the extension surface E3 of the upper surface 130 a of the support plate 130. In this embodiment, the upper surface 113 a of the side wall 113 can abut the lower surface 121 b of the top cover 121. Thereby, corresponding to the second edge L2 side of the bottom plate 111, the side wall 113 can abut the top cover 121 so that the upper frame 120 abuts the back frame 110, which contributes to structural strength. Herein, the backlight module 100 is illustrated by taking the side-light type backlight module as an example, which does not limit the present invention, and can also be used for a direct-light type backlight module.

綜上所述，本發明實施例之背光模組，藉由擋壁伸入第一限位壁的外表面與底板的第一邊緣之間所形成的容置部並且能夠抵接背框，使得至少部份的擋壁可以內縮至底板的範圍內。相較於習知背光模組而言，本發明實施例能夠省略擋壁的厚度。另外，由於第一限位壁的上表面低於或等於支撐板的上表面的延伸面，因此對於位在支撐板上的光學膜片而言，上框與光學膜片之間留有側向的延伸空間，如此，在背光模組長期使用下、或因其他環境條件下，光學膜片側向膨脹時，並不會接觸到上框而損壞。In summary, in the backlight module of the embodiment of the present invention, the retaining wall extends into the accommodating portion formed between the outer surface of the first limiting wall and the first edge of the bottom plate and can abut the back frame, so that At least part of the retaining wall can be retracted into the range of the bottom plate. Compared with the conventional backlight module, the embodiment of the present invention can omit the thickness of the blocking wall. In addition, since the upper surface of the first limiting wall is lower than or equal to the extension surface of the upper surface of the support plate, for the optical film located on the support plate, a lateral direction is left between the upper frame and the optical film. In this way, under long-term use of the backlight module or under other environmental conditions, when the optical film expands laterally, it will not touch the upper frame and be damaged.

雖然本發明的技術內容已經以較佳實施例揭露如上，然其並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神所作些許之更動與潤飾，皆應涵蓋於本發明的範疇內，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the technical content of the present invention has been disclosed in the preferred embodiment as above, it is not intended to limit the present invention. Anyone who is familiar with this technique and makes some changes and modifications without departing from the spirit of the present invention should be covered by the present invention Therefore, the scope of protection of the present invention shall be subject to the scope of the attached patent application.

1:顯示裝置 100:背光模組 110:背框 111:底板 111a:上表面 112:限位壁 1121:第一限位壁 1121a:上表面 1121c:外表面 1122:第二限位壁 1122c:外表面 1123:第三限位壁 1123c:外表面 1124:第四限位壁 113:側壁 113a:上表面 113c:外表面 120:上框 121:頂蓋 122:擋壁 121b:下表面 122b:下表面 122c:內表面 1221:折片 130:支撐板/導光板 130a:上表面 140:光學膜片 140b:下表面 140c:側表面 150:光源 160:支撐板 160a:上表面 170:支撐元件 180:電路基板 190:反射片 200:顯示面板 C:倒角 D1:垂直投影方向 E:凸部 H:容置部 E1:延伸面 E2:延伸面 E3:延伸面 F:間距 L1:第一邊緣 L2:第二邊緣 N:凹口 N1:凹槽面 P:間隙 S:空間 T:厚度 1: display device 100: Backlight module 110: back frame 111: bottom plate 111a: upper surface 112: Limit Wall 1121: The first limit wall 1121a: upper surface 1121c: outer surface 1122: Second Limiting Wall 1122c: outer surface 1123: Third Limit Wall 1123c: outer surface 1124: Fourth Limit Wall 113: Sidewall 113a: upper surface 113c: outer surface 120: upper frame 121: top cover 122: Wall 121b: lower surface 122b: bottom surface 122c: inner surface 1221: Folding 130: support plate/light guide plate 130a: upper surface 140: optical diaphragm 140b: bottom surface 140c: side surface 150: light source 160: support plate 160a: upper surface 170: support element 180: circuit board 190: reflective sheet 200: display panel C: Chamfer D1: Vertical projection direction E: Convex H: containing part E1: extended surface E2: extended surface E3: extended surface F: spacing L1: first edge L2: second edge N: Notch N1: Groove surface P: gap S: Space T: thickness

圖1為具本發明一實施例的背光模組的顯示裝置的外觀示意圖。圖2為圖1所示實施例的顯示裝置中以A-A為剖線的剖面示意圖。圖3為本發明一實施例的背光模組的側視示意圖。圖4為本發明另一實施例的背光模組的側視示意圖。圖5為本發明又一實施例的背光模組的側視示意圖。圖6A為對應於圖1所示實施例中以A-A為剖線的另一實施例的顯示裝置的剖面示意圖。圖6B為圖6A所示實施例的局部立體示意圖。圖7為對應於圖1所示實施例中以A-A為剖線的又一實施例的背光模組的剖面示意圖。圖8為本發明一實施例的背光模組的俯視示意圖。圖9為本發明一實施例的背光模組的俯視示意圖。圖10A為對應於圖9之B-B剖線的背光模組的剖面示意圖。圖10B為具本發明的一實施例的背光模組的顯示裝置的剖面示意圖。圖11為本發明另一實施例的背光模組之俯視示意圖。圖12為具本發明一實施例的背光模組的顯示裝置的剖面示意圖。1 is a schematic diagram of the appearance of a display device with a backlight module according to an embodiment of the invention. FIG. 2 is a schematic cross-sectional view of the display device of the embodiment shown in FIG. 1 taken along the line A-A. 3 is a schematic side view of a backlight module according to an embodiment of the invention. 4 is a schematic side view of a backlight module according to another embodiment of the invention. FIG. 5 is a schematic side view of a backlight module according to another embodiment of the invention. 6A is a schematic cross-sectional view of a display device corresponding to another embodiment of the embodiment shown in FIG. 1 with A-A as a cross-sectional line. Fig. 6B is a partial three-dimensional schematic diagram of the embodiment shown in Fig. 6A. FIG. 7 is a schematic cross-sectional view of a backlight module corresponding to another embodiment with A-A as the section line in the embodiment shown in FIG. 1. FIG. 8 is a schematic top view of a backlight module according to an embodiment of the invention. FIG. 9 is a schematic top view of a backlight module according to an embodiment of the invention. 10A is a schematic cross-sectional view of the backlight module corresponding to the B-B section line of FIG. 9. 10B is a schematic cross-sectional view of a display device with a backlight module according to an embodiment of the invention. FIG. 11 is a schematic top view of a backlight module according to another embodiment of the invention. 12 is a schematic cross-sectional view of a display device with a backlight module according to an embodiment of the invention.

100:背光模組 100: Backlight module

110:背框 110: back frame

111:底板 111: bottom plate

111a:上表面 111a: upper surface

112:限位壁 112: Limit Wall

1121a:上表面 1121a: upper surface

1121:第一限位壁 1121: The first limit wall

1121c:外表面 1121c: outer surface

120:上框 120: upper frame

121:頂蓋 121: top cover

122:擋壁 122: Wall

121b:下表面 121b: lower surface

122c:內表面 122c: inner surface

130:導光板/支撐板 130: light guide plate/support plate

130a:上表面 130a: upper surface

140:光學膜片 140: optical diaphragm

140b:下表面 140b: bottom surface

140c:側表面 140c: side surface

200:顯示面板 200: display panel

D1:垂直投影方向 D1: Vertical projection direction

E1:延伸面 E1: extended surface

H:容置部 H: containing part

F:間距 F: spacing

L1:第一邊緣 L1: first edge

P:間隙 P: gap

S:空間 S: Space

T:厚度 T: thickness

122b:下表面 122b: bottom surface

Claims

一種背光模組，包括：一背框，具有一底板及一第一限位壁，該第一限位壁立於該底板的一上表面上且鄰近該底板的一第一邊緣，於該底板的一垂直投影方向上，該第一限位壁的一外表面的垂直投影與該底板的該第一邊緣的垂直投影之間具有一間距，該第一限位壁的該外表面與該底板的該第一邊緣之間形成一容置部；一上框，具有一頂蓋及一擋壁，該擋壁連接該頂蓋的一下表面，至少部分該擋壁位於該第一限位壁的該外表面的外側且該擋壁抵接該背框，該擋壁伸入該容置部；以及一支撐板，位於該底板與該頂蓋之間的一空間，其中該第一限位壁的一上表面不越過該支撐板的一上表面的一延伸面。A backlight module includes: a back frame with a bottom plate and a first limiting wall, the first limiting wall stands on an upper surface of the bottom plate and is adjacent to a first edge of the bottom plate, on the bottom In a vertical projection direction, there is a distance between the vertical projection of an outer surface of the first limiting wall and the vertical projection of the first edge of the bottom plate, and the outer surface of the first limiting wall and the vertical projection of the bottom plate An accommodating portion is formed between the first edges; an upper frame with a top cover and a blocking wall, the blocking wall is connected to the lower surface of the top cover, at least part of the blocking wall is located on the first limiting wall The outer surface of the outer surface and the blocking wall abuts against the back frame, the blocking wall extends into the accommodating portion; and a support plate located in a space between the bottom plate and the top cover, wherein the first limit wall An upper surface does not cross an extension surface of an upper surface of the support plate.

如請求項1所述之背光模組，該支撐板係為一導光板，該第一限位壁限制該導光板於該空間中的位置。According to the backlight module of claim 1, the support plate is a light guide plate, and the first limit wall restricts the position of the light guide plate in the space.

如請求項1所述之背光模組，更包括一光源，該支撐板係為一擴散板，該光源位於該背框之該底板與該擴散板之間。The backlight module according to claim 1, further comprising a light source, the support plate is a diffuser plate, and the light source is located between the bottom plate of the back frame and the diffuser plate.

如請求項3所述之背光模組，更包括一支撐元件，該支撐元件抵接該擴散板，且該支撐元件位於該背框之該底板與該擴散板之間。The backlight module according to claim 3, further comprising a supporting element, the supporting element abuts the diffuser plate, and the supporting element is located between the bottom plate of the back frame and the diffuser plate.

如請求項1所述之背光模組，其中該上框之該擋壁抵接該背框之該底板。The backlight module according to claim 1, wherein the blocking wall of the upper frame abuts the bottom plate of the back frame.

如請求項1所述之背光模組，其中該擋壁的一下表面為平面。The backlight module according to claim 1, wherein the lower surface of the blocking wall is flat.

如請求項1所述之背光模組，其中該擋壁的一下表面具有一凹口，該凹口具有凹陷於該擋壁的該下表面的一凹槽面，且該凹口的該凹槽面抵接該底板。The backlight module of claim 1, wherein the lower surface of the blocking wall has a notch, the notch has a groove surface recessed in the lower surface of the blocking wall, and the groove of the notch The surface abuts the bottom plate.

如請求項1所述之背光模組，其中於該底板的該垂直投影方向上，該擋壁的一厚度小於等於該間距。The backlight module according to claim 1, wherein in the vertical projection direction of the bottom plate, a thickness of the blocking wall is less than or equal to the pitch.

如請求項1所述之背光模組，更包括一光學膜片，該光學膜片位於該支撐板的該上表面上，該第一限位壁的該上表面低於該光學膜片的一下表面的一延伸面。The backlight module of claim 1, further comprising an optical film, the optical film is located on the upper surface of the support plate, the upper surface of the first limiting wall is lower than the lower surface of the optical film An extension of the surface.

如請求項1所述之背光模組，其中該背框更具有一側壁，該側壁立於該底板的該上表面上且對應該底板的一第二邊緣設置，於該底板的該垂直投影方向上，該側壁的一外表面的垂直投影與該底板的該第二邊緣的垂直投影重疊。The backlight module of claim 1, wherein the back frame further has a side wall standing on the upper surface of the bottom plate and corresponding to a second edge of the bottom plate, in the vertical projection direction of the bottom plate Above, the vertical projection of an outer surface of the side wall overlaps with the vertical projection of the second edge of the bottom plate.

如請求項10所述之背光模組，更包括一光源，該光源位於該側壁與該支撐板之間。The backlight module according to claim 10, further comprising a light source located between the side wall and the supporting plate.

如請求項10所述之背光模組，其中該側壁的一上表面越過該支撐板的該上表面的該延伸面。The backlight module according to claim 10, wherein an upper surface of the side wall crosses the extension surface of the upper surface of the support plate.

如請求項10所述之背光模組，其中該側壁的一上表面抵接該頂蓋的該下表面。The backlight module according to claim 10, wherein an upper surface of the side wall abuts against the lower surface of the top cover.

如請求項1所述之背光模組，其中該擋壁更包括一折片，該折片位於該底板與該頂蓋之間的該空間且朝向該支撐板的方向延伸，該折片抵接於該第一限位壁的該上表面。The backlight module according to claim 1, wherein the blocking wall further includes a flap, the flap is located in the space between the bottom plate and the top cover and extends toward the direction of the support plate, and the flap abuts On the upper surface of the first limiting wall.

如請求項14所述之背光模組，其中該擋壁的一下表面的一延伸面介於該底板的該上表面及該第一限位壁的該上表面之間。The backlight module according to claim 14, wherein an extension surface of the lower surface of the blocking wall is between the upper surface of the bottom plate and the upper surface of the first limiting wall.