201005382 九、發明說明： 【發明所屬之技術 本發月疋有關於_種背光模組及其組裝方法，且特別 疋有關於種液晶_示器之背光模組及其組裝方法。 【先前技術】 液曰曰顯不器具有輕、薄短、小、高畫質及壽命長等 優，，已逐漸發展為市場上的主流顯示器。其甲，液晶顯 ❹示器均包括液晶顯示面板及背光模組。背光模組用以提供 顯示面板所需之光源。 其中，背光模組包括一框架、一散熱元件及一燈源 組。燈源組係設置於框架内。散熱元件通常設置於燈源組 與框架間，用以散去燈源組的多餘熱能。 為方便組裝與維修，近日發展出一種可抽換式燈源之 背光模組。在組裝過程中，組裝人員可直接將燈源組插入 框架中即可完成組裝。當燈源組需要維修時，維修人員可 Φ 直接將燈源組抽離框架，即可更換燈源組。 為避免維修時，燈源組在插入與抽離過程中，與散熱 兀件產生碰撞或是散熱元件產生位移，造成燈源組或散熱 凡件之損傷，導致維修不易，一般習知之做法係增加燈源 組與散熱元件之間距，但是增加燈源組與散熱元件之間距 將大幅降低散熱之效果，導致背先模組溫度上升，影響液 晶顯示器之壽命與畫面品質。 因此，在不影響燈管組散熱效能的前提下，如何有效 6 201005382 解決可抽換式燈源之背光模組，在抽換燈源組時可以迅速 地將燈源組插入與抽離背光模組，且不會損傷燈源組或散 熱元件，乃本領域之技術人員所急欲解決之議題。 【發明内容】 本發明係有關於一種背光模組及其組裝方法，其利用 背板上之凹表面或凸表面之設計，使得燈源組在插入或抽 離的過程中，均與散熱薄膜保持一預定距離，更進一步避 ⑩ 免發生散熱薄膜被掀起之現象。 根據本發明之一方面，提出一種背光模組。背光模組 包括一框架、一背板、一散熱薄膜及一燈源組。背板設置 於該框架之對側，與該框架形成一容置槽，該容置槽具有 一側向開口。背板具有至少·一凸起或凹陷’凸起或凹陷係 鄰近於侧向開口。散熱薄膜貼附於背板上，具有第一端及 第二端。且第一端鄰近側向開口，第二端遠離側向開口》 燈源組係插入或抽離於容置槽。其中當燈源組由侧向開口 ❿ 插入容置槽時，藉由凸起或凹陷使得燈源組與第一端保持 一預定距離。當燈源組插入容置槽之底部時，燈源組與散 熱薄膜貼合。 根據本發明之另一方面，提出一種背光模組之組裝方 法。背光模組之組裝方法包括以下步驟：提供一框架、一 背板、一散熱薄膜及一燈源組。該背板設置於該框架之對 側，與該框架形成一容置槽，該容置槽具有一側向開口。 背板具有至少一凸起或凹陷面，凸起或凹陷係鄰近於側向 7 201005382 開口。散熱薄膜係貼附於背板上。散熱薄膜具有—第— 及一第二端。第-端鄰近側向開口，第二端遠離側向開端 口。由側向開口插人燈源組於容置槽，藉由凸起或凹^ 得燈源組與散熱薄膜之第一端保持一預定距離。 為讓本發明之上述内容能更明顯易懂，下文特舉較佳 實施例，並配合所附圖式，作詳細說明如下： ❹ 【實施方式】 第一實施例 請參照第1圖，其繪示本發明第一實施例之背光模組 100之示意圖。背光模組100包括一框架110、一背板12〇、 一散熱薄膜130及一燈源組140。框架11〇具有一抵靠部 112。背板120設置於框架110之底部，與框架11〇形成一 容置槽111 ’容置槽111具有一側向開口 1丨丨a及一相對於 側向開口 111a的槽底111b。背板120具有二凸起121及 ❹ 122。凸起121鄰近於側向開口 iiia ’凸起122鄰近於槽 底111b。散熱薄膜130係貼附於背板120上，散熱薄膜 130具有一第一端131及一第二端132，第一端ι31鄰近 側向開口 Ilia，第二端131鄰近槽底111b。在組裝時，燈 源組140係由側向開口 ma插入於容置槽U1。當燈源組 140損壞時，燈源組140可由侧向開口 111a抽離容置槽 111，進行維修或更換其他燈源組140。 為了更清楚凸起121及122之形狀，請同時參照第i 8 201005382 圖及第2圖，第2圖繪示第1圖之背板120與散熱薄膜130 之立體圖。如第2圖所示，凸起121及122係為圓形之凸 起的表面。 以下更以數張示意圖，詳細說明燈源組140插入於容 置槽111之過程。請參照第3A〜3D圖，其繪示第1圖之 燈源組140插入於容置槽111之過程的示意圖。 如第3A圖所示，燈源組140係位於容置槽111之外， 而尚未插入於容置槽111内。燈源組140包括至少一發光 ❹ 元件141，發光元件141用以提供一光線。燈源組140並 包括上板144與下板145,其中下板145具有二凹槽142、 143，組裝後，係分別對應於背板120之凸起121、122。 如第3B圖所示，操作者由側向開口 111a將燈源組 140插入容置槽111，此時燈源組140抵達鄰近侧向開口 111a之凸起121。就鄰近侧向開口 111a之凸起121與散熱 薄膜130之關係而言，凸起121由背板120之表面朝向容 置槽111所凸出的高度D121大於散熱薄膜130之第一端 • 131的厚度D131，且凸起121位於第一端131及侧向開口201005382 IX. Description of the invention: [Technology of the invention] The present invention relates to a backlight module and an assembly method thereof, and particularly to a backlight module for a liquid crystal display device and an assembly method thereof. [Prior Art] The liquid helium display device is light, thin, short, small, high in image quality and long in life, and has gradually developed into a mainstream display on the market. A, the liquid crystal display includes a liquid crystal display panel and a backlight module. The backlight module is used to provide a light source required for the display panel. The backlight module includes a frame, a heat dissipating component and a light source group. The light source set is placed inside the frame. The heat dissipating component is usually disposed between the lamp source group and the frame to dissipate excess heat energy of the lamp source group. In order to facilitate assembly and maintenance, a backlight module with a replaceable light source has been developed. During the assembly process, the assembler can assemble the light source set directly into the frame. When the light source group needs to be repaired, the maintenance personnel can Φ directly remove the light source group from the frame to replace the light source group. In order to avoid maintenance, the light source group collides with the heat-dissipating components during the insertion and extraction process, or the heat-dissipating components are displaced, causing damage to the light source group or the heat-dissipating parts, resulting in difficulty in maintenance, and the conventional practice is increased. The distance between the light source group and the heat dissipating component, but increasing the distance between the light source group and the heat dissipating component will greatly reduce the heat dissipation effect, resulting in an increase in the temperature of the back module, which affects the life and picture quality of the liquid crystal display. Therefore, without affecting the heat dissipation performance of the lamp group, how to effectively solve the backlight module of the replaceable lamp source can quickly insert the lamp source group into and out of the backlight mode when the lamp source group is replaced. The group, without damaging the light source group or the heat dissipating component, is an issue that the person skilled in the art is eager to solve. SUMMARY OF THE INVENTION The present invention relates to a backlight module and an assembly method thereof, which utilizes a concave surface or a convex surface design on a back plate, so that the light source group is kept with the heat dissipation film during insertion or extraction. A predetermined distance, further avoiding the phenomenon that the heat-dissipating film is picked up. According to an aspect of the invention, a backlight module is provided. The backlight module includes a frame, a back plate, a heat dissipation film and a light source group. The back plate is disposed on the opposite side of the frame, and forms a receiving groove with the frame, the receiving groove has a side opening. The backing plate has at least one projection or depression' projection or depression adjacent the lateral opening. The heat dissipation film is attached to the back plate and has a first end and a second end. And the first end is adjacent to the lateral opening, and the second end is away from the lateral opening. The light source group is inserted or extracted from the accommodating groove. When the light source group is inserted into the accommodating groove by the lateral opening ,, the light source group is kept at a predetermined distance from the first end by the protrusion or the recess. When the light source group is inserted into the bottom of the accommodating groove, the light source group is attached to the heat absorbing film. According to another aspect of the present invention, an assembly method of a backlight module is proposed. The assembly method of the backlight module includes the following steps: providing a frame, a back plate, a heat dissipation film, and a light source group. The backing plate is disposed on the opposite side of the frame, and forms a receiving groove with the frame, the receiving groove has a side opening. The backing plate has at least one raised or recessed surface adjacent the lateral opening 7 201005382. The heat-dissipating film is attached to the backboard. The heat dissipating film has a - first and a second end. The first end is adjacent to the lateral opening and the second end is remote from the lateral opening. The light source group is inserted into the accommodating groove from the lateral opening, and the light source group is held by the protrusion or the recess to maintain a predetermined distance from the first end of the heat dissipation film. In order to make the above-mentioned contents of the present invention more comprehensible, the following description of the preferred embodiments and the accompanying drawings will be described in detail as follows: 实施 Embodiments Please refer to FIG. 1 for the first embodiment, A schematic diagram of a backlight module 100 according to a first embodiment of the present invention. The backlight module 100 includes a frame 110, a back plate 12A, a heat dissipation film 130, and a light source group 140. The frame 11A has an abutment portion 112. The back plate 120 is disposed at the bottom of the frame 110, and forms a receiving groove 111 with the frame 11'. The receiving groove 111 has a lateral opening 1A and a groove bottom 111b opposite to the lateral opening 111a. The back plate 120 has two protrusions 121 and ❹ 122. The projection 121 is adjacent to the lateral opening iiia'. The projection 122 is adjacent to the groove bottom 111b. The heat dissipation film 130 is attached to the back plate 120. The heat dissipation film 130 has a first end 131 and a second end 132. The first end ι 31 is adjacent to the lateral opening Ilia, and the second end 131 is adjacent to the groove bottom 111b. At the time of assembly, the light source group 140 is inserted into the accommodating groove U1 by the lateral opening ma. When the light source group 140 is damaged, the light source group 140 can be withdrawn from the accommodating groove 111 by the lateral opening 111a for maintenance or replacement of the other light source group 140. In order to better understand the shapes of the protrusions 121 and 122, please refer to the figures i 8 201005382 and FIG. 2 simultaneously. FIG. 2 is a perspective view of the back sheet 120 and the heat dissipation film 130 of FIG. 1 . As shown in Fig. 2, the projections 121 and 122 are circular convex surfaces. The process of inserting the light source group 140 into the accommodating groove 111 will be described in detail below in a plurality of schematic diagrams. Referring to FIGS. 3A to 3D, a schematic diagram of a process in which the light source group 140 of FIG. 1 is inserted into the accommodating groove 111 is shown. As shown in FIG. 3A, the light source group 140 is located outside the accommodating groove 111 and has not been inserted into the accommodating groove 111. The light source group 140 includes at least one light emitting element 141 for providing a light. The light source group 140 includes an upper plate 144 and a lower plate 145, wherein the lower plate 145 has two grooves 142, 143 which, after assembly, correspond to the protrusions 121, 122 of the back plate 120, respectively. As shown in Fig. 3B, the operator inserts the light source group 140 into the accommodating groove 111 by the lateral opening 111a, at which time the light source group 140 reaches the projection 121 adjacent to the lateral opening 111a. The height D121 of the protrusion 121 protruding from the surface of the back plate 120 toward the accommodating groove 111 is greater than the first end of the heat dissipating film 130 in terms of the relationship between the protrusion 121 adjacent to the lateral opening 111a and the heat dissipation film 130. a thickness D131, and the protrusion 121 is located at the first end 131 and the lateral opening
Ilia之間。所以，在燈源組140插入於容置槽111的過程 中，燈源組140之下板145首先抵靠到凸起121，而被凸 起121所撐起。使得燈源組140與散熱薄膜130之第一端 131保持一預定距離D11。如此一來，燈源組140不會碰 觸到散熱薄膜130之第一端131，更不會將散熱薄膜130 掀起或位移。 較佳地，凸起121鄰近側向開口 Ilia處之部分係為 9 201005382 平滑地，以使燈源組140在接近凸起121的過程中，可順 著平滑的凸起121移動。 如第3C圖所示，其繪示出燈源組140抵達鄰近槽底 111b之凸起122。在燈源組140接近容置槽111之槽底ulb 時’由於另一凸起122由背板120之表面朝向容置槽U1 所凸出的高度D122大於散熱薄膜130之第二端131的厚 度D131，且此凸起122位於第二端132及槽底1Ub之間。 所以’在抵靠凸起122時，將被凸起122所撐起，使得燈 ❿源組140與散熱薄膜130之第二端132保持一預定距離 D12。如此一來，燈源組14〇不會碰觸到散熱薄膜13〇之 第二端132 ’更不會將散熱薄膜130掀起或位移。 接著，如第3D圖所示’此時燈源組14〇完全插入於 容置槽111内。由於框架110之抵靠部112係向下凸出於 容置槽111之内壁，並位於容置槽U1之槽底lllb，且抵 罪部112實質上位於背板120之對側。當燈源組140完全 插入於容置槽111時，燈源組140之上板144抵靠於抵靠 • 部112，以使燈源組140朝向背板120之散熱薄膜13〇靠 近’而與散熱薄膜130貼合。 其中’為了避免燈源組140在朝向散熱薄膜130靠近 時仍然被背板120之凸起121、122所撐起，本實施例之 燈源組140之下板145具有二凹槽142、143,係分別對應 於背板120之凸起121、122。如此一來，當燈源組14〇抵 罪於抵靠部121時，燈源組140可以順利地朝向散熱薄膜 130靠近’而與散熱薄膜13〇貼合。 201005382 其中，燈源組140在運作過程中，經常產生大量的熱 能。燈源組140與散熱薄膜130緊密地貼合時，燈源組140 的熱能可以順利地藉由散熱薄膜130傳導至背板120上， 以達到散熱的效果。 較佳地，背板120及散熱薄膜130更可具有導電性。 燈源組140與散熱薄膜130緊密地貼合時，散熱薄膜130 及背板120更可作為燈源組140之接地端。 在本實施例中，散熱薄膜130之材質包含金屬。金屬 ❹ 具有高導熱性及高導電性，使得散熱薄膜130同時具有熱 傳導特性及電傳導特性。 燈源組140抽離於容置槽111之過程則與上述第3A 〜3D圖之說明相反。在燈源組140抽離的過程中，燈源 組140不會碰觸到散熱薄膜130之第一端131及第二端 132，更不會將散熱薄膜130掀起。 此外，發光元件141例如是一冷陰極燈管（CCFL) 或一發光二極體（LED)。若發光元件141為冷陰極燈管 ❿ 時，燈源組140之下板145經常更包括一反射片（未繪 示），反射片用以反射光線，或是下板145之表面直接使 用具反射功能之材質。反射片設置於燈源組140面對於背 板120之處。當燈源組140插入容置槽111之槽底111b 時，反射片係與散熱薄膜140貼合。由於反射片一般亦為 金屬材質，故以反射片貼合於散熱薄膜130可以達到優良 之散熱與接地效果。 201005382 第二實施例 請參照第4圖，其繪示本發明第二實施例之背光模組 200之示意圖。本實施例之背光模組200與第一實施例之 背光模組100不同之處在於背板220之表面具有凹陷 221、222，凹陷221鄰近於侧向開口 111a，凹陷222鄰近 槽底111b，其餘相同之處不再重述。 為了更清楚凹陷221及222之形狀，請同時參照第4 圖及第5圖，第5圖繪示第4圖之背板220與散熱薄膜130 ❹ 之立體圖。如第5圖所示，凹陷221、222係為長條狀之 下凹的表面。 以下更以數張示意圖，詳細說明燈源組140插入於容 置槽111之過程。請參照第6A〜6D圖，其繪示第4圖之 燈源組140插入於容置槽111之過程的示意圖。 如第6A圖所示，燈源組140係位於容置槽111之外， 而尚未插入於容置槽111内。 如第6B圖所示，操作者由側向開口 111a插入燈源組 ❿ 140於容置槽111，此時燈源組140抵達鄰近侧向開口 111a 之凹陷221。就凹陷221與散熱薄膜130之關係而言，凹 陷221由背板220之表面朝向容置槽111外所下凹之深度 D221大於散熱薄膜130之第一端131的厚度D131。並且 全部之第一端131係貼附於凹陷221内（如第5圖所示）。 所以，在燈源組140插入於容置槽111的過程中，當燈源 組140抵靠到凹陷之位置時，燈源組140與散熱薄膜130 之第一端131將保持一預定距離D21。如此一來，燈源組 12 201005382. 更不會將散 140不會碰觸到散熱薄膜130之第一端131， 熱薄膜130掀起或位移。 如第6C圖所示，此時燈源組14〇抵達鄰近槽广 之凹陷221。在燈源組140接近容置槽Ul之槽底 由於另一凹陷222由背板220之表面朝向容罟掩 分ι谓111外 下凹之深度D222大於散熱薄膜130之第二端132 所 D132。並且全部之第二端132係貼附於凹陷222肉r ▲又 照第5圖）。所以，在燈源組140抵達凹陷222 > . 呀’燈源Between Ilia. Therefore, in the process in which the light source group 140 is inserted into the accommodating groove 111, the lower plate 145 of the light source group 140 first abuts against the protrusion 121 and is erected by the protrusion 121. The light source group 140 is maintained at a predetermined distance D11 from the first end 131 of the heat dissipation film 130. As a result, the light source group 140 does not touch the first end 131 of the heat dissipation film 130, and does not lift or displace the heat dissipation film 130. Preferably, the portion of the projection 121 adjacent to the lateral opening Ilia is 9 201005382 smoothly so that the light source group 140 can move along the smooth projection 121 during the approach of the projection 121. As shown in Fig. 3C, it is illustrated that the light source set 140 reaches the projections 122 adjacent the groove bottom 111b. When the light source group 140 is close to the groove bottom ulb of the accommodating groove 111, the height D122 protruding from the surface of the back plate 120 toward the accommodating groove U1 by the other protrusion 122 is greater than the thickness of the second end 131 of the heat dissipation film 130. D131, and the protrusion 122 is located between the second end 132 and the groove bottom 1Ub. Therefore, when it abuts against the projection 122, it will be supported by the projection 122, so that the lamp source group 140 and the second end 132 of the heat dissipation film 130 are maintained at a predetermined distance D12. As a result, the light source group 14 〇 does not touch the second end 132 ′ of the heat dissipation film 13 更 and does not pick up or displace the heat dissipation film 130 . Next, as shown in Fig. 3D, the lamp source group 14 is completely inserted into the accommodating groove 111 at this time. Since the abutting portion 112 of the frame 110 protrudes downward from the inner wall of the receiving groove 111 and is located at the groove bottom 111b of the receiving groove U1, the abutting portion 112 is substantially located on the opposite side of the backing plate 120. When the light source group 140 is fully inserted into the accommodating groove 111, the upper plate 144 of the light source group 140 abuts against the abutting portion 112, so that the light source group 140 faces the heat-dissipating film 13 of the back plate 120. The heat dissipation film 130 is attached. The lower plate 145 of the light source group 140 of the present embodiment has two grooves 142, 143, in order to prevent the light source group 140 from being erected by the protrusions 121, 122 of the back plate 120 when approaching the heat dissipation film 130. Corresponding to the protrusions 121, 122 of the backing plate 120, respectively. In this way, when the light source group 14 is sinned against the abutting portion 121, the light source group 140 can smoothly approach the heat-dissipating film 130 to be attached to the heat-dissipating film 13A. 201005382 Among them, the light source group 140 often generates a large amount of heat during operation. When the light source group 140 is closely attached to the heat dissipation film 130, the heat energy of the light source group 140 can be smoothly transmitted to the back plate 120 through the heat dissipation film 130 to achieve the heat dissipation effect. Preferably, the back plate 120 and the heat dissipation film 130 are more electrically conductive. When the light source group 140 is closely attached to the heat dissipation film 130, the heat dissipation film 130 and the back plate 120 can be used as the ground end of the light source group 140. In this embodiment, the material of the heat dissipation film 130 contains metal. The metal crucible has high thermal conductivity and high electrical conductivity, so that the heat dissipating film 130 has both heat conduction characteristics and electrical conduction characteristics. The process of extracting the light source group 140 from the accommodating groove 111 is opposite to the description of the above-mentioned 3A to 3D drawings. During the process of the light source group 140 being pulled away, the light source group 140 does not touch the first end 131 and the second end 132 of the heat dissipation film 130, and the heat dissipation film 130 is not picked up. Further, the light-emitting element 141 is, for example, a cold cathode fluorescent lamp (CCFL) or a light-emitting diode (LED). If the light-emitting element 141 is a cold cathode lamp tube ,, the lower plate 145 of the light source group 140 often further includes a reflection sheet (not shown), the reflection sheet is for reflecting light, or the surface of the lower plate 145 is directly used for reflection. The material of the function. The reflection sheet is disposed at the side of the light source group 140 facing the back panel 120. When the light source group 140 is inserted into the groove bottom 111b of the accommodating groove 111, the reflection sheet is attached to the heat dissipation film 140. Since the reflection sheet is also generally made of a metal material, the heat dissipation and grounding effect can be achieved by bonding the reflection sheet to the heat dissipation film 130. 201005382 Second Embodiment Referring to FIG. 4, a schematic diagram of a backlight module 200 according to a second embodiment of the present invention is shown. The backlight module 200 of the present embodiment is different from the backlight module 100 of the first embodiment in that the surface of the back plate 220 has recesses 221, 222, the recess 221 is adjacent to the lateral opening 111a, and the recess 222 is adjacent to the groove bottom 111b, and the rest The similarities are not repeated. In order to better understand the shapes of the recesses 221 and 222, please refer to FIG. 4 and FIG. 5 at the same time. FIG. 5 is a perspective view of the back plate 220 and the heat dissipation film 130 第 of FIG. As shown in Fig. 5, the recesses 221, 222 are elongated concave surfaces. The process of inserting the light source group 140 into the accommodating groove 111 will be described in detail below in a plurality of schematic diagrams. Referring to FIGS. 6A to 6D, a schematic diagram of the process of inserting the light source group 140 of FIG. 4 into the accommodating groove 111 is shown. As shown in FIG. 6A, the light source group 140 is located outside the accommodating groove 111 and has not been inserted into the accommodating groove 111. As shown in Fig. 6B, the operator inserts the light source group ❿ 140 into the accommodating groove 111 from the lateral opening 111a, at which time the light source group 140 reaches the recess 221 adjacent to the lateral opening 111a. The depth D221 of the recess 221 from the surface of the back plate 220 toward the outside of the accommodating groove 111 is greater than the thickness D131 of the first end 131 of the heat dissipating film 130, in terms of the relationship between the recess 221 and the heat dissipating film 130. And all of the first ends 131 are attached to the recesses 221 (as shown in Fig. 5). Therefore, during the insertion of the light source group 140 into the accommodating groove 111, when the light source group 140 abuts against the recessed position, the light source group 140 and the first end 131 of the heat dissipation film 130 will maintain a predetermined distance D21. In this way, the light source group 12 201005382. will not cause the heat sink 130 to touch the first end 131 of the heat dissipation film 130, and the heat film 130 is lifted or displaced. As shown in Fig. 6C, at this time, the light source group 14 turns to reach the wide recess 221 adjacent to the groove. The light source group 140 is close to the groove bottom of the accommodating groove U1. The other recess 222 is formed by the surface of the back plate 220 toward the accommodating surface, and the depth D222 of the concave portion is larger than the second end 132 of the heat dissipation film 130. And all of the second ends 132 are attached to the recesses 222 meat ▲ and according to Figure 5). Therefore, the light source group 140 reaches the recess 222 > .
組140與散熱薄膜130之第二端132將保持一預定距離 D22。如此一來，燈源組140不會碰觸到散熱薄膜 第二端132，更不會將散熱薄膜130掀起或位移。 如第6D圖所示’當燈源組140完全插入於容置样^ 時，燈源組140抵罪於抵罪部Π 2，以使燈源組1々ο朝向 散熱薄膜130靠近，而與散熱薄膜130貼合。 本實施利之燈源組140抽離於容置槽m之過程則與 上述第6A〜6D圖之說明相反。在燈源組14〇抽離的過程 中，燈源組140不會碰觸到散熱薄膜13〇之第一端i3l及 第二端132 ’更不會將散熱薄膜130掀起或位移。 本發明上述實施例所揭露之背光模組及其組裝方 法，具有多項優點’以下僅列舉部分優點說明如下： 第一、以背板具有凸起之表面而言，凸起由背板之表 面所凸出的高度大於散熱薄膜之第一端的厚度，且凸起位 於第一端及侧向開口之間。所以，在燈源組插入於容置槽 13 201005382 L. 的過程中，燈源組首先抵靠到凸起，而被撐起凸起的高 度。使得燈源組與散熱薄膜之第一端保持一預定距離。如 此一來，燈源組不會碰觸到散熱薄膜之第一端，更不會將 散熱薄膜掀起或位移。 第二、以背板具有凸起之表面而言，另一凸起由背板 之表面所凸出的高度大於散熱薄膜之第二端的厚度，且此 凸起位於第二端及槽底之間。所以，在燈源組接近於容置 槽之槽底的過程中，燈源組首先抵靠到凸起，而被撐起凸 ❹ 起的高度。使得燈源組與散熱薄膜之第二端保持一預定距 離。如此一來，燈源組不會碰觸到散熱薄膜之第二端，更 不會將散熱薄膜掀起。 第三、當燈源組插入容置槽之槽底時，燈源組抵靠於 抵靠部，以使燈源組朝向散熱薄膜靠近，而與散熱薄膜貼 合。 第四、以背板具有凸起之表面而言，燈源組之下板具 有二凹槽，燈源組之凹槽係對應於背板之凸起。如此一 ❿ 來，當燈源組抵靠於抵靠部時，燈源組可以順利地朝向散 熱薄膜靠近，而與散熱薄膜貼合。 第五、燈源組與燈源組緊密地貼合時，燈源組的熱能 可以順利地藉由散熱薄膜傳導至背板上，以達到散熱的效 果。 第六、背板及散熱薄膜更可具有導電性。燈源組與燈 源組緊密地貼合時，散熱薄膜及背板更可作為燈源組之接 地端。 14 201005382 第七、若發光元件為冷陰極燈管時，燈源組經常更包 括一反射片，反射片用以反射光線。反射片設置於燈源組 面對於背板之處，例如燈源組之下板。當燈源組插入容置 槽之底部時，反射片係與散熱薄膜貼合。由於反射片一般 亦為金屬材質，故以反射片貼合於散熱薄膜可以達到優良 之散熱與接地效果。 第八、以背板具有凹陷之表面而言，凹陷由背板之表 面所下凹之深度大於散熱薄膜之第一端的厚度。並且全部 _ 之第一端係貼附於凹陷之範圍内。所以，在燈源組插入於 容置槽的過程中，燈源組抵靠到凹陷之位置時，燈源組與 散熱薄膜之第一端保持一預定距離。如此一來，燈源組不 會碰觸到散熱薄膜之第一端，更不會將散熱薄膜掀起。 第九、以背板具有凹陷之表面而言，另一凹陷由背板 之表面所下凹之深度大於散熱薄膜之第二端的厚度。並且 全部之第二端係貼附於凹陷之範圍内。所以，在燈源組接 近於容置槽之槽底的過程中，燈源組抵達凹陷時，燈源組 ❹ 與散熱薄膜之第二端保持一預定距離。如此一來，燈源組 不會碰觸到散熱薄膜之第二端，更不會將散熱薄膜掀起。 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。 15 201005382 【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示意圖； 第2圖繪示第1圖之背板與散熱薄膜之立體圖； 第3A〜3D圖繪示第1圖之燈源組插入於容置槽之過 程的示意圖； 第4圖繪示本發明第二實施例之背光模組之示意圖； 第5圖繪示第4圖之背板與散熱薄膜之立體圖；以及 第6A〜6D圖繪示第4圖之燈源組插入於容置槽之過 ⑩ 程的示意圖。 【主要元件符號說明】 100、200 :背光模組 110 :框架 111 :容置槽 111 a :側向開口 111b :槽底 • 112 :抵靠部 120 :背板 121、122 :凸起 221、222 :凹陷 140 :燈源組 141 :發光元件 142、143 :凹槽 144 :上板 16 201005382 145 :下板 130 :散熱薄膜 131 :第一端 132 :第二端The group 140 and the second end 132 of the heat dissipation film 130 will maintain a predetermined distance D22. As a result, the light source group 140 does not touch the second end 132 of the heat dissipation film, and the heat dissipation film 130 is not picked up or displaced. As shown in FIG. 6D, when the light source group 140 is fully inserted into the receiving sample ^, the light source group 140 is sinned against the conviction portion 2 so that the light source group 1 々 ο toward the heat-dissipating film 130 is close to the heat-dissipating film. 130 fits. The process of extracting the light source group 140 of the present embodiment from the accommodating groove m is opposite to the description of the above-mentioned 6A to 6D. During the extraction of the light source group 14 , the light source group 140 does not touch the first end i3l and the second end 132 ′ of the heat dissipation film 13〇, and the heat dissipation film 130 is not picked up or displaced. The backlight module and the assembly method thereof disclosed in the above embodiments of the present invention have a plurality of advantages. The following only some of the advantages are described as follows: First, in terms of the surface of the back plate having a protrusion, the protrusion is provided by the surface of the back plate. The height of the protrusion is greater than the thickness of the first end of the heat dissipation film, and the protrusion is located between the first end and the lateral opening. Therefore, during the insertion of the light source group into the receiving groove 13 201005382 L., the light source group first abuts against the protrusion and is raised to the height of the protrusion. The light source group is maintained at a predetermined distance from the first end of the heat dissipation film. As a result, the light source group does not touch the first end of the heat dissipation film, and does not pick up or displace the heat dissipation film. Secondly, in the case that the back plate has a convex surface, the height of the other protrusion protruding from the surface of the back plate is greater than the thickness of the second end of the heat dissipation film, and the protrusion is located between the second end and the bottom of the groove . Therefore, in the process in which the lamp source group is close to the groove bottom of the accommodating groove, the lamp source group first abuts against the bulge and is lifted up to the height of the bulge. The lamp source group is maintained at a predetermined distance from the second end of the heat dissipation film. In this way, the light source group does not touch the second end of the heat dissipation film, and the heat dissipation film is not picked up. Third, when the light source group is inserted into the bottom of the receiving groove, the light source group abuts against the abutting portion, so that the light source group approaches the heat dissipating film and is in contact with the heat dissipating film. Fourth, in the case that the back plate has a convex surface, the lower plate of the light source group has two grooves, and the grooves of the light source group correspond to the protrusions of the back plate. In this way, when the light source group abuts against the abutting portion, the light source group can smoothly approach the heat-dissipating film and fit the heat-dissipating film. Fifth, when the light source group and the light source group are closely attached, the heat energy of the light source group can be smoothly transmitted to the back plate through the heat dissipation film to achieve the heat dissipation effect. Sixth, the back sheet and the heat dissipation film are more electrically conductive. When the light source group and the light source group are closely attached, the heat dissipation film and the back plate can be used as the ground end of the light source group. 14 201005382 VII. If the light-emitting element is a cold cathode lamp, the light source group often further includes a reflection sheet for reflecting light. The reflection sheet is disposed at the light source assembly for the back panel, such as the lower panel of the light source group. When the light source group is inserted into the bottom of the accommodating groove, the reflection sheet is attached to the heat dissipation film. Since the reflective sheet is also generally made of a metal material, the heat-dissipating film can be attached to the heat-dissipating film to achieve excellent heat dissipation and grounding effects. Eighth, in the case that the backing plate has a concave surface, the recess is recessed by the surface of the backing plate to a depth greater than the thickness of the first end of the heat dissipating film. And the first end of all _ is attached to the range of the recess. Therefore, in the process of inserting the light source group into the accommodating groove, when the light source group abuts against the recessed position, the light source group and the first end of the heat dissipation film are kept at a predetermined distance. In this way, the light source group does not touch the first end of the heat dissipation film, and the heat dissipation film is not picked up. Ninth, in terms of the surface of the back sheet having a depression, the other recess is recessed by the surface of the back sheet to a depth greater than the thickness of the second end of the heat dissipating film. And all of the second ends are attached to the recess. Therefore, in the process in which the lamp source group is adjacent to the groove bottom of the accommodating groove, when the lamp source group reaches the recess, the light source group 保持 is kept at a predetermined distance from the second end of the heat dissipation film. In this way, the light source group does not touch the second end of the heat dissipation film, and the heat dissipation film is not picked up. 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. 15 201005382 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a backlight module according to a first embodiment of the present invention; FIG. 2 is a perspective view showing a back plate and a heat dissipating film of FIG. 1; FIGS. 3A to 3D are diagrams FIG. 4 is a schematic diagram of a backlight module according to a second embodiment of the present invention; FIG. 5 is a schematic diagram of a back panel and a heat dissipating film of FIG. 4; FIG. 6A to FIG. 6D are schematic diagrams showing the light source group of FIG. 4 inserted into the accommodating groove. [Description of main component symbols] 100, 200: backlight module 110: frame 111: accommodating groove 111 a: lateral opening 111b: groove bottom • 112: abutting portion 120: back plates 121, 122: protrusions 221, 222 : recess 140 : light source group 141 : light-emitting elements 142 , 143 : recess 144 : upper plate 16 201005382 145 : lower plate 130 : heat-dissipating film 131 : first end 132 : second end
Dll、D12、D21、D22 :預定距離 D121、D122 :凸起由背板之表面所凸出的高度 D131 :第一端之厚度 D132 :第二端之厚度 φ D221、D222 :凹陷由背版之表面所下凹之深度D11, D12, D21, D22: predetermined distance D121, D122: the height of the protrusion from the surface of the back plate D131: the thickness of the first end D132: the thickness of the second end φ D221, D222: the recess is made by the back plate Depth of the surface
1717