201017289 1 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種背光模組、顯示裝置及其組裝方 法，且特別是有關於一種以螺絲固定之背光模組、顯示裝 置及其組裝方法。 【先前技術】 背光模組（Back light module)係為液晶顯示裝置的 關鍵零組件之一。由於液晶本身不會發光，因此背光模組 之功能即在供應充足的亮度與分佈均勻的光源。 背光模組主要係由背框、光源組件及導光板等元件組 裝而成。一般常見的傳統的背光模組的組裝方法，會先以 螺絲將光源組件鎖固在背框上。接著，再將導光板插入背 框中所對應的凹槽中。然而，以插入手段固定的導光板的 固定性較差，因此導光板鬆脫的機會很高。此外，插入之 導光板也易與背框磨擦，而使導光板受損並發出異音。 此外，導光板亦可以黏膠來固定於背框上，然而此種 方法除需增加黏膠之成本外，也需增加黏附的組裝工時。 另外，以黏膠固定的導光板也容易與光源組件的燈殼摩擦 而產生異音。 【發明内容】 本發明係有關於一種背光模組、顯示裝置及其組裝方 法，其藉由螺絲將導光板及保護蓋同時固定於背框上，以 增加導光板之固定性並降低產品成本。 201017289 根據本發明之第一方面，提出一種背光模組之組裝方 法，包括下列步驟。提供一背框，且背框具有一凹槽及至 少一鎖合孔，鎖合孔位於凹槽内；設置一光源組件於背框 上；設置一導光板於背框上，導光板具有一凸出部及一第 一貫穿孔，凸出部係凸出於導光板之邊緣，第一貫穿孔設 置於凸出部，其中導光板之凸出部係設置於背框之凹槽 中，且第一貫穿孔係對應於鎖合孔；覆蓋一保護蓋於導光 板及光源組件上，保護蓋具有一第二貫穿孔，且第二貫穿 ❿孔係對應第一貫穿孔；以及以一螺絲插入第二貫穿孔、第 一貫穿孔及鎖合孔，並鎖合於鎖合孔，以使保護蓋、光源 組件及導光板固定於背框上。 根據本發明之第二方面，提出一種背光模組。背光模 組包括一背框、一導光板、一光源組件、一保護框以及至 少一螺絲。背框具有一凹槽及至少一鎖合孔，鎖合孔位於 凹槽内。光源組件係設置於背框上。導光板係設置於背框 上，且導光板具有一凸出部及至少一第一貫穿孔。凸出部 胃係凸出於導光板之邊緣，第一貫穿孔設置於凸出部，其中 導光板之凸出部設置於背框之凹槽中，且第一貫穿孔係對 應於鎖合孔。保護蓋係覆蓋於導光板及光源組件上，保護 蓋具有至少一第二貫穿孔，且第二貫穿孔係對應第一貫穿 孔設置。螺絲係插入於第二貫穿孔及第一貫穿孔，並鎖合 於背框之鎖合孔中，以使保護蓋、光源組件及導光板固定 於背框上。 根據本發明之第三方面，提出一種顯示裝置之組裝方 7 201017289 法。顯不裝置之組裝方法包括以下步驟。提供一背框，背 框具有一凹槽以及至少一鎖合孔，鎖合孔位於凹槽内。設 置一光源組件於背框上。設置一導光板於背框上，導光板 具有-凸出部及―第—貫穿孔，凸出部係凸出於導光板之 3緣’第-貫穿孔設置於凸出部，其中導光板之凸出部係 設置於背框之凹槽巾’且第-貫？孔係對應於鎖合孔。覆 蓋-保護蓋於導練及光源組件上，保護蓋具有一第二貫 穿孔，且第二貫穿孔係對應第一貫穿孔。以一螺絲插入第 -，穿孔、第-貫穿孔及鎖合孔，並鎖合於鎖合孔，以使 保護蓋、光源組件及導光板固定於背框上而組合成一背光 模組。設置一顯示面板於背光模組上。 根據本發明之第四方面，提出一種顯示裝置。顯示裝 置包括-背光模組及—顯示面板。㈣模組包括一背框、 一光源組件、一導光板、一保護蓋及至少一螺絲。背框具 有二凹槽以及至少-鎖合孔。鎖合孔位於凹槽内。光源組 件設置於背框上。導光板設置於背框上，JL導光板具有一 凸出部及至少一第一貫穿孔。凸出部係凸出於導光板之邊 緣’第-貫穿孔設置於凸出部，其中導光板之凸出部係設 置於背框之凹槽中’且第—貫穿孔係對應於鎖合孔。保護 蓋覆蓋於導光板及光源組件上，保護蓋具有至少—第二貫 穿孔’且第二貫穿孔係對應第—貫穿孔設置。螺絲係插入 於第二貫穿孔及第—貫穿孔，並鎖合於背框之鎖合孔中， 以使保護蓋、光源組件及導光板固定於背框上。顯示面板 係設置於背光模組上。 201017289 【實施方式】 實施^數個實施例作為本發明之說明。然而該些 實施例所提_料㈣及結構僅為舉例朗201017289 1 IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module, a display device and an assembly method thereof, and more particularly to a backlight module, a display device and assembly thereof method. [Prior Art] A backlight module is one of the key components of a liquid crystal display device. Since the liquid crystal itself does not emit light, the function of the backlight module is to supply a sufficient light source with uniform brightness and distribution. The backlight module is mainly composed of components such as a back frame, a light source component and a light guide plate. In the conventional method of assembling a conventional backlight module, the light source assembly is first locked to the back frame by screws. Then, insert the light guide plate into the corresponding groove in the back frame. However, the light guide plate fixed by the insertion means is inferior in fixing property, so that the chance of the light guide plate being loosened is high. In addition, the inserted light guide plate is also easy to rub against the back frame, and the light guide plate is damaged and an abnormal sound is emitted. In addition, the light guide plate can also be glued to the back frame. However, in addition to increasing the cost of the glue, this method also requires an increased assembly man-hour. In addition, the light guide plate fixed by the adhesive is also easily rubbed against the lamp housing of the light source unit to generate an abnormal sound. SUMMARY OF THE INVENTION The present invention relates to a backlight module, a display device, and an assembly method thereof, which simultaneously fix a light guide plate and a protective cover to a back frame by screws, thereby increasing the fixability of the light guide plate and reducing product cost. 201017289 According to a first aspect of the present invention, an assembly method of a backlight module is provided, comprising the following steps. Providing a back frame, the back frame has a groove and at least one locking hole, the locking hole is located in the groove; a light source component is disposed on the back frame; a light guide plate is disposed on the back frame, and the light guide plate has a convexity And a first through hole, the protruding portion protrudes from the edge of the light guide plate, and the first through hole is disposed in the protruding portion, wherein the protruding portion of the light guide plate is disposed in the groove of the back frame, and the first portion The perforation system corresponds to the locking hole; the protective cover is disposed on the light guide plate and the light source assembly, the protection cover has a second through hole, and the second through hole corresponds to the first through hole; and the screw is inserted into the first through hole The second through hole, the first through hole and the locking hole are locked to the locking hole, so that the protective cover, the light source assembly and the light guide plate are fixed on the back frame. According to a second aspect of the present invention, a backlight module is provided. The backlight module includes a back frame, a light guide plate, a light source assembly, a protective frame, and at least one screw. The back frame has a groove and at least one locking hole, and the locking hole is located in the groove. The light source component is disposed on the back frame. The light guide plate is disposed on the back frame, and the light guide plate has a protruding portion and at least one first through hole. The protruding portion of the stomach protrudes from the edge of the light guide plate, and the first through hole is disposed in the protruding portion, wherein the protruding portion of the light guide plate is disposed in the groove of the back frame, and the first through hole corresponds to the locking hole . The protective cover is disposed on the light guide plate and the light source assembly, the protective cover has at least one second through hole, and the second through hole is disposed corresponding to the first through hole. The screw is inserted into the second through hole and the first through hole, and is locked in the locking hole of the back frame, so that the protective cover, the light source assembly and the light guide plate are fixed on the back frame. According to a third aspect of the invention, an assembly method of a display device 7 201017289 is proposed. The assembly method of the display device includes the following steps. A back frame is provided, the back frame has a groove and at least one locking hole, and the locking hole is located in the groove. A light source assembly is disposed on the back frame. A light guide plate is disposed on the back frame, the light guide plate has a protrusion portion and a first through hole, and the protrusion portion protrudes from the edge 3 of the light guide plate. The first through hole is disposed in the protrusion portion, wherein the light guide plate is disposed The bulge is set in the groove of the back frame and is the first? The hole system corresponds to the locking hole. The cover-protection cover is disposed on the guide and the light source assembly, the protective cover has a second through hole, and the second through hole corresponds to the first through hole. The first, the through hole, the through hole and the locking hole are inserted into the locking hole by a screw, and the protective cover, the light source assembly and the light guide plate are fixed on the back frame to be combined into a backlight module. A display panel is disposed on the backlight module. According to a fourth aspect of the invention, a display device is provided. The display device includes a backlight module and a display panel. (4) The module comprises a back frame, a light source component, a light guide plate, a protective cover and at least one screw. The back frame has two grooves and at least a locking hole. The locking hole is located in the groove. The light source assembly is placed on the back frame. The light guide plate is disposed on the back frame, and the JL light guide plate has a protruding portion and at least one first through hole. The protruding portion protrudes from the edge of the light guide plate. The first through hole is disposed in the protruding portion, wherein the protruding portion of the light guide plate is disposed in the groove of the back frame and the first through hole corresponds to the locking hole. . The protective cover covers the light guide plate and the light source assembly, the protective cover has at least a second through hole and the second through hole is disposed corresponding to the first through hole. The screw is inserted into the second through hole and the first through hole, and is locked in the locking hole of the back frame, so that the protective cover, the light source assembly and the light guide plate are fixed on the back frame. The display panel is disposed on the backlight module. 201017289 [Embodiment] Several embodiments are implemented as an explanation of the present invention. However, the materials (4) and structures mentioned in the examples are only examples.
對本發明欲保護之範圍做限縮。再者，圖式中已省略實施 例中不必要之①件’以利清楚顯示本發明之技術特點。 第一實施例 請同時參照第丨圖及第2圖。第丨_示本發明第一 實施例之背光模組剛之俯視圖，第2圖緣示第丨圖中背 j模組100的爆炸圖。如第！圖所示，背光模組i⑽包括 一背框110、一光源組件12〇、一導光板13〇、一保護蓋 140以及至少一螺絲15〇。如第2圖所示，背框具有 至少一鎖合孔ll〇a❶光源組件12〇係設置於背框11〇上， 光源組件_12〇包括―光源122及-燈架124 ’（光源組件 120係標示於第4圖中，第2圖歸示光源組件12〇之燈 架124)。導光板13〇係設置於背框11〇上且導光板13〇 具有至少一第—貫穿孔130a ’第一貫穿孔130a係對應於 鎖合孔110a。保護蓋140係覆蓋於導光板13〇及光源組件 120上，保護蓋14〇具有至少一第二貫穿孔，且第二 貫穿孔140a係對應第一貫穿孔13〇a設置。 接著’進一步敘述本實施例之背光模組100的組裝方 9 201017289 法’並請同時參照第3圖及第4囷’第3圖緣示本發明較 佳實施例之背光模組1〇〇之組裝方法的流程圖，第4圖緣 不第1圖之背光模組1〇〇沿著剖面線4-4，之剖面圖。 首先，如第4圖所示，在步驟3〇1中，提供一背框 110凊同時參照第Μ圖，其缚示依照第2圖中背框11 〇 及導光板130之局部放大圖。如第5A圖所示，背框110 具有一凹槽110h，❿背框110之鎖合孔110a係設置於凹 槽ii〇h之底部。如第4圖所示，鎖合孔u〇a之孔壁係配 合螺絲150設置螺紋，以使螺絲15〇能緊密地鎖合於鎖合 孔110a中。 然後，如第4圖及第5B圖所示，第5B圖繪示第2圖 之燈架124及保護蓋14〇之局部放大圖。於步驟3〇2中， 3又置光源組件12〇於背框11〇上。光源122設置於背框ιι〇 上’燈架124則覆蓋於光源122及背框11〇上。於本實施 例中，為使燈架124與背框110間之固定性增加，較佳地 可於燈架124上設置一第一套孔124a。如此一來，燈架 I24便能藉由第一套孔124a套接在背框11〇的凸塊11〇t 上。 接著，如第4圖所示，在步驟303中，設置導光板 130於背框11〇上，且導光板13〇之第一貫穿孔13〇&係對 應於鎖合孔ll〇a。如第5A圖所示，導光板13〇較佳地具 有一凸出部130h，且凸出部13〇h係凸出於導光板13〇之 邊緣，而第一貫穿孔130a係設置於凸出部13〇1>1上。當導 光板130設置於背框11〇上時，導光板13〇之凸出部13肋 201017289 • » » · Λ ft 係設置於背框11()之凹槽丨議中，且導光板削之第一 貫穿孔13〇a係與鎖合孔u〇a相通。如第4圖所示，本實 施例之凹槽UGh之深度Μ實質上係與導光板130之厚度 hi及凸出部的厚度h〇相等，因此將導光板13〇之凸出部 13=叹置於寺框11〇之凹槽11〇h中便能有效地減少整 體背光模組110的總厚度；此外，如第5C圖所示，其緣 示依照第5A圖之另-實施例。在另一實施例中，凸出部 130h之厚度h0與導光板13〇之厚度M也可以不相等端 霸視設計上的實際需要可做適當之改變。 然後，如第4圖及第5B圖所示，在步驟304中，覆 蓋保護蓋140於導光板13〇及光源組件12〇上，且保護蓋 140之第二貫穿孔14〇a係對應第一貫穿孔設置。於 本實施例中，保護蓋140較佳地亦可對應背框11〇之凸塊 110t 6又置一第二套孔14〇b。因此，當保護蓋14〇覆蓋於 導光板130及燈架124上時，第二貫穿孔14〇a係與第一 貫穿孔130a相通，且第二套孔14〇b亦套接於凸塊u〇t 零上。 接著，如第4圖所示，在步驟3〇5中，以一螺絲15〇 插入第二貫穿孔14〇a、第一貫穿孔13〇a及鎖合孔u〇a， 並鎖合於鎖合孔ll〇a，以使保護蓋14〇、光源組件12〇及 導光板130固定於背框no上。於本實施例中，螺絲15〇 包括一抵靠部154及一柱體部丨52。抵靠部154之直徑dl 大於第二貫穿孔140a及第一貫穿孔13〇a之直徑d2,柱體 4 152之直展d3小於第一貫穿孔140a之直徑d2及第一 201017289 .The scope of the invention to be protected is limited. Further, the unnecessary one of the embodiments has been omitted in the drawings to clearly show the technical features of the present invention. First Embodiment Please refer to both the figure and figure 2. The first embodiment shows a front view of the backlight module of the first embodiment of the present invention, and the second figure shows the exploded view of the back j module 100 in the second embodiment. As the first! As shown, the backlight module i (10) includes a back frame 110, a light source assembly 12A, a light guide plate 13A, a protective cover 140, and at least one screw 15A. As shown in FIG. 2, the back frame has at least one locking hole 〇a ❶, and the light source assembly 12 is disposed on the back frame 11 ,, and the light source assembly _12 ― includes a “light source 122 and a light frame 124 ′ (the light source assembly 120 It is indicated in Fig. 4, and Fig. 2 is a diagram showing the lamp holder 124) of the light source unit 12. The light guide plate 13 is disposed on the back frame 11A and the light guide plate 13A has at least one first through hole 130a'. The first through hole 130a corresponds to the locking hole 110a. The protective cover 140 is disposed on the light guide plate 13 and the light source assembly 120. The protective cover 14 has at least one second through hole, and the second through hole 140a is disposed corresponding to the first through hole 13〇a. Then, the assembly method of the backlight module 100 of the present embodiment is further described. [201017289] and the backlight module 1 of the preferred embodiment of the present invention is also referred to with reference to FIG. 3 and FIG. The flow chart of the assembly method, the fourth drawing is not shown in the first embodiment of the backlight module 1 〇〇 along the section line 4-4. First, as shown in Fig. 4, in step 3〇1, a back frame 110 is provided, and reference is made to the second drawing, which is attached to a partial enlarged view of the back frame 11 〇 and the light guide plate 130 in Fig. 2 . As shown in Fig. 5A, the back frame 110 has a recess 110h, and the locking hole 110a of the hatchback frame 110 is disposed at the bottom of the recess ii 〇 h. As shown in Fig. 4, the hole wall of the lock hole u〇a is provided with a screw 150 so that the screw 15 can be tightly fitted in the lock hole 110a. Then, as shown in Fig. 4 and Fig. 5B, Fig. 5B is a partial enlarged view of the lamp holder 124 and the protective cover 14A of Fig. 2. In step 3〇2, the light source assembly 12 is placed on the back frame 11〇. The light source 122 is disposed on the back frame ι 〇. The light frame 124 covers the light source 122 and the back frame 11 。. In this embodiment, in order to increase the fixing between the lamp holder 124 and the back frame 110, a first sleeve hole 124a is preferably disposed on the lamp holder 124. In this way, the lamp holder I24 can be sleeved on the bump 11 〇t of the back frame 11 by the first set of holes 124a. Next, as shown in Fig. 4, in step 303, the light guide plate 130 is disposed on the back frame 11A, and the first through holes 13〇& of the light guide plate 13 are corresponding to the lock holes 11a. As shown in FIG. 5A, the light guide plate 13A preferably has a protruding portion 130h, and the protruding portion 13〇h protrudes from the edge of the light guide plate 13〇, and the first through hole 130a is disposed on the protruding portion. Part 13〇1>1. When the light guide plate 130 is disposed on the back frame 11〇, the protrusion 13 of the light guide plate 13 is lining 201017289 • » ft is disposed in the groove of the back frame 11 (), and the light guide plate is cut The first through hole 13A is in communication with the locking hole u〇a. As shown in FIG. 4, the depth Μ of the groove UGh of the embodiment is substantially equal to the thickness hi of the light guide plate 130 and the thickness h〇 of the protruding portion, so that the protruding portion 13 of the light guide plate 13 is sighed. The total thickness of the entire backlight module 110 can be effectively reduced by placing it in the recess 11〇h of the temple frame. Further, as shown in Fig. 5C, the edge is shown in another embodiment according to Fig. 5A. In another embodiment, the thickness h0 of the projection 130h and the thickness M of the light guide plate 13 can also be unequal. The actual needs of the design can be appropriately changed. Then, as shown in FIG. 4 and FIG. 5B, in step 304, the protective cover 140 is covered on the light guide plate 13 and the light source assembly 12, and the second through hole 14A of the protective cover 140 corresponds to the first Through hole setting. In this embodiment, the protective cover 140 preferably also has a second sleeve hole 14〇b corresponding to the protrusion 110t 6 of the back frame 11〇. Therefore, when the protective cover 14 is covered on the light guide plate 130 and the lamp holder 124, the second through hole 14〇a is in communication with the first through hole 130a, and the second set hole 14〇b is also sleeved on the protrusion u. 〇t zero. Next, as shown in FIG. 4, in step 3〇5, the second through hole 14〇a, the first through hole 13〇a, and the locking hole u〇a are inserted by a screw 15〇, and locked to the lock. The hole 〇 〇 a is closed so that the protective cover 14 〇, the light source unit 12 〇 and the light guide plate 130 are fixed to the back frame no. In the present embodiment, the screw 15A includes an abutting portion 154 and a cylindrical portion 52. The diameter dl of the abutting portion 154 is larger than the diameter d2 of the second through hole 140a and the first through hole 13〇a, and the straight line d3 of the column 4 152 is smaller than the diameter d2 of the first through hole 140a and the first 201017289.
1 W4362FA 貫穿孔130a之直徑d2。如此一來，柱體部152不會與導 光板130接觸，所以在螺絲150的鎖合過程中，導光板13〇 並不會受到損害。 再者’本實施例之柱體部152的長度h4實質上大於 導光板130之厚度hi及保護蓋140之厚度h3之合，以使 螺絲150能插入保護蓋140及導光板130，並與背框110 的鎖合孔110a鎖固。 另外’柱艎部152之長度h4實質上小於導光板130 之厚度hi、保護蓋140之厚度h3及鎖合孔ll〇a之深度 ® h5之合，使得抵靠部154可抵靠在保護蓋HO上，保護蓋 140便因螵絲150而固定於背框11〇上，且導光板13〇也 能藉由保護蓋140及背框110之挾持而固定。 如此一來’導光板130便能緊緊地固定於背框11〇 上’不易從背框110上鬆脫。因此導光板13〇便不會與背 框110磨擦而使導光板130受損並發出異音。再者，導光 板130及光源組件120可同時藉由同一螺絲150固定於背 框110上，亦可降少產品成本並降低組裝工時。 ® 第二實施例 請參照第6圖’繪示本發明第二實施例之背光模組 200之俯視圖。第二實施例與第一實施例之不同之處在於 保護蓋240之數量及相對應之鎖合孔210a的數量及設置 位置，其餘相同之處係不再重述。 於本實施例中，兩個光源組件220係分別設置於背框 12 201017289 210的二側，背框210之四角則以第一實施例之方法來固 定導光板230、保護蓋240及光源組件220於背框210上。 本發明上述實施例所揭露之背光模組、顯示裝置及其 組裝方法，係藉由螺絲同時將保護蓋、導光板及光源組件 固定於背框上。如此一來，不但能增加導光板與背框的固 定性，使導光板不易從背框上鬆脫，更能避免導光板與背 框磨擦而使導光板受損並發出異音。此外，導光板及光源 組件可同時藉由同一螺絲固定於背框上，亦可降少產品成 參本並降低組裝工時。 綜上所述，雖然本發明已以較佳實施例揭露如上，然 其並非用以限定本發明。本發明所屬技術領域中具有通常 知識者，在不脫離本發明之精神和範圍内，當可作各種之 更動與潤飾。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。1 W4362FA The diameter d2 of the through hole 130a. As a result, the cylindrical portion 152 does not come into contact with the light guide plate 130, so that the light guide plate 13 is not damaged during the locking process of the screw 150. Furthermore, the length h4 of the pillar portion 152 of the present embodiment is substantially larger than the thickness hi of the light guide plate 130 and the thickness h3 of the protective cover 140, so that the screw 150 can be inserted into the protective cover 140 and the light guide plate 130, and the back The locking hole 110a of the frame 110 is locked. In addition, the length h4 of the column portion 152 is substantially smaller than the thickness hi of the light guide plate 130, the thickness h3 of the protective cover 140, and the depth of the locking hole lla® h5, so that the abutting portion 154 can abut against the protective cover. On the HO, the protective cover 140 is fixed to the back frame 11 by the twisting wire 150, and the light guide plate 13 can also be fixed by the holding of the protective cover 140 and the back frame 110. In this way, the light guide plate 130 can be tightly fixed to the back frame 11A, so that it is not easily released from the back frame 110. Therefore, the light guide plate 13 does not rub against the back frame 110 to damage the light guide plate 130 and emit an abnormal sound. Moreover, the light guide plate 130 and the light source assembly 120 can be fixed to the back frame 110 by the same screw 150 at the same time, which can reduce the product cost and reduce the assembly man-hour. ® Second Embodiment Referring to Figure 6, a top view of a backlight module 200 according to a second embodiment of the present invention is shown. The second embodiment differs from the first embodiment in the number of protective covers 240 and the number and arrangement positions of the corresponding locking holes 210a, and the rest of the same points will not be repeated. In this embodiment, the two light source components 220 are respectively disposed on two sides of the back frame 12 201017289 210. The four corners of the back frame 210 fix the light guide plate 230, the protective cover 240 and the light source assembly 220 by the method of the first embodiment. On the back frame 210. The backlight module, the display device and the assembling method thereof disclosed in the above embodiments of the present invention fix the protective cover, the light guide plate and the light source assembly to the back frame by screws simultaneously. In this way, not only can the fixing of the light guide plate and the back frame be increased, but the light guide plate is not easily detached from the back frame, and the light guide plate and the back frame can be prevented from being rubbed to damage the light guide plate and emit abnormal sound. In addition, the light guide plate and the light source assembly can be fixed to the back frame by the same screw at the same time, and the product can be reduced into a reference and the assembly man-hour can be reduced. In the above, the present invention has been disclosed in the above preferred embodiments, but it is not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
13 201017289 I W4J62PA 【圖式簡單說明】 第1圖繪示本發明第一實施例之背光模組之俯視圖； 第2圖繪示第1圖中背光模組的爆炸圖； 第3圖繪示本發明較佳實施例之背光模組之組裝方 法的流程圖； 第4圖繪示第1圖中背光模組沿著剖面線4_4’之剖 面圖； 第5A圖繪示第2圖中背框及導光板之局部放大圖； 第5B圖繪示第2圖中燈架及保護蓋之局部放大圖； 第5C圖所示繪示依照第5A圖之另一實施例；以及 第6圖繪示繪示本發明第二實施例之背光模組之俯 視圖。 【主要元件符號說明】 1〇〇、200 :背光模組 110、210 :背框 110a :鎖合孔 110h :凹槽 110t :凸塊 12 0、2 2 0 :光源組件 12 2 :光源 124 :燈架 124a :第一套孔 201017289 130、230 :導光板 130a :第一貫穿孔 130h :凸出部 140、240 :保護蓋 140a :第二貫穿孔 140b :第二套孔 150 :螺絲 152 :柱體部 ❿ 154:抵靠部 dl ： d2 ： d3 ： h0 :凸出部的厚度 hi :導光板之厚度 h2 :凹槽之深度 h3 :保護蓋之厚度 h4 :柱體部之長度 h5 :鎖合孔之深度 抵靠部之直徑 第一及第二貫穿孔之直徑 柱體部之直徑 1513 201017289 I W4J62PA [Simplified Schematic Description] FIG. 1 is a plan view of a backlight module according to a first embodiment of the present invention; FIG. 2 is an exploded view of the backlight module in FIG. 1; A flowchart of a method for assembling a backlight module according to a preferred embodiment of the present invention; FIG. 4 is a cross-sectional view of the backlight module along the section line 4_4' in FIG. 1 and a back frame of FIG. A partially enlarged view of the light guide plate; FIG. 5B is a partial enlarged view of the light stand and the protective cover in FIG. 2; FIG. 5C is a view showing another embodiment according to FIG. 5A; A top view of a backlight module of a second embodiment of the present invention is shown. [Main component symbol description] 1〇〇, 200: backlight module 110, 210: back frame 110a: locking hole 110h: groove 110t: bump 12 0, 2 2 0 : light source assembly 12 2 : light source 124 : lamp Rack 124a: first set of holes 201017289 130, 230: light guide plate 130a: first through hole 130h: protruding portion 140, 240: protective cover 140a: second through hole 140b: second set of holes 150: screw 152: cylinder ❿ 154: abutment portion dl : d2 : d3 : h0 : thickness of the projection portion hi : thickness of the light guide plate h2 : depth of the groove h3 : thickness of the protective cover h4 : length of the cylindrical portion h5 : locking hole The diameter of the abutment portion is the diameter of the first and second through-hole diameters of the cylindrical portion 15