201007279 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種顯示裝置，且特別是有關於一種液晶 顯示裝置（Liquid Crystal Display，LCD )及其背光模組 (Backlight Module ) 〇 【先前技術】 隨著平面顯示技術的進步加上平面顯示裝置具有重量 輕、體積小及省電等優點，平面顯示裝置已愈來愈普及。常見 0 的平面顯示裝置有液晶顯示裝置、電聚顯示裝置（Plasma Display Panel，PDP)、有機發光二極體顯示裝置（〇rganic Light Emitting Diode Display, OLED Display)以及電泳顯示裝置 ( Electrophoretic Display，EPD )等，其中又以液晶顯示裝置的 普及率最高。 液晶顯示裝置包括液晶顯示面板（LCD Panel)與背光模 組’其中老光核組疋用以提供面光源至液晶顯示面板。因此， 背光模組所提供之面光源的品質與液晶顯示裝置的顯示品質 息息相關。 圖1是習知一種背光模組的示意圖。請參照圖1，習知背 光模組100包括散熱板110、導光板120、光源單元13〇、多 個光學膜140以及反射片150。導光板120是配置於散熱板11〇 上’而反射片150是配置於導光板120與散熱板11〇之間。導 光板120具有入光面122與出光面124，光學膜14〇是配置於 出光面124上。此外，導光板120的入光面與散熱板ι10 的側壁112之間形成容置空間si，而光源單元13〇是可抽取 式的’其可沿Ζ軸而置入容置空間si内。 承上述’光源單元130包括燈罩132以及連接燈罩132的 6 201007279 光源L ^且二形成容置空間。光源單元包括燈罩與連接燈罩的 方向置入4弟二部分位於第—位置時，光源單元適於沿預定 後，散^ =間内。當光源單元沿預定方向置人容置空間内 ,'7之第二部份適於移動至第二位置以與燈罩接觸。 基之背光模組更包括第-導熱 ❹ ❹ 膠，實施例中’上述之第一導熱件為雙面導熱 / I、膠具有二黏貼面，分難貼於餘基板與燈罩。 在本發明之一實施例中，上述之點光源為頂部發光 =本，明之—實施财，上述之第二部份具有底部與側 觸’。第一擔之侧壁是與人光面相對，且適於與燈罩之侧壁接 件，=s=:上述之背光模組更包括第二導熱 t發明之一實施例中，上述之第二導熱件為單面導埶 夕’且早面導熱膠具有-黏貼面，黏貼於第二部份的側壁。 、在本發明之-實施例中，上述之點光源為側邊發 源’燈罩具有底部與髓’料之彳_是與人光面相對，且 一導熱件是連接於燈罩之底部。 示 辟^發明之-實施例中’上述之第二部份具有底部與側 找入响f雜之底部適於 8 201007279 光源組134，其中光源組134是透過導熱膠136而黏貼於燈罩 132。光源組134包括條狀基板134a以及配置於條狀基板134a 上的多個發光二極體（Light Emitting Diode，LED) 134b。發光 二極體134b為頂部發光型的發光二極體，其用以提供光線135 至導光板120。導光板120會將光線135轉換成面光源，反射 片150用以反射光線135，以使光線135從導光板120的出光 面124射出，而光學膜140則用以將面光源均勻化。201007279 IX. Description of the Invention: [Technical Field] The present invention relates to a display device, and more particularly to a liquid crystal display (LCD) and a backlight module thereof (previously) Technology] With the advancement of flat display technology and the advantages of flat display devices such as light weight, small size, and power saving, flat display devices have become more and more popular. Common 0 flat display devices include liquid crystal display devices, Plasma Display Panels (PDPs), 〇rganic Light Emitting Diode Displays (OLED Display), and Electrophoretic Display (EPD) devices. ), etc., among which liquid crystal display devices have the highest penetration rate. The liquid crystal display device includes a liquid crystal display panel (LCD Panel) and a backlight module group, wherein the old light core group is used to provide a surface light source to the liquid crystal display panel. Therefore, the quality of the surface light source provided by the backlight module is closely related to the display quality of the liquid crystal display device. FIG. 1 is a schematic diagram of a conventional backlight module. Referring to FIG. 1, the conventional backlight module 100 includes a heat dissipation plate 110, a light guide plate 120, a light source unit 13A, a plurality of optical films 140, and a reflection sheet 150. The light guide plate 120 is disposed on the heat dissipation plate 11A, and the reflection sheet 150 is disposed between the light guide plate 120 and the heat dissipation plate 11A. The light guide plate 120 has a light incident surface 122 and a light exit surface 124, and the optical film 14 is disposed on the light exit surface 124. In addition, an accommodating space si is formed between the light incident surface of the light guide plate 120 and the side wall 112 of the heat dissipation plate ι10, and the light source unit 13 is detachable and can be placed in the accommodating space si along the yoke axis. The above-mentioned light source unit 130 includes a lamp cover 132 and a light source L^ which is connected to the lamp cover 132 and forms an accommodation space. The light source unit includes a lamp cover and a direction in which the lamp cover is connected. When the second part is located at the first position, the light source unit is adapted to be disposed after the predetermined position. When the light source unit is placed in the accommodation space in a predetermined direction, the second portion of '7 is adapted to be moved to the second position to be in contact with the lamp cover. The backlight module further includes a first heat conductive adhesive. In the embodiment, the first heat conducting member is double-sided heat conductive/I, and the rubber has two adhesive surfaces, which are difficult to adhere to the remaining substrate and the lamp cover. In one embodiment of the invention, the point source is a top illumination = the present, and the second portion has a bottom and side touch. The side wall of the first load is opposite to the human light surface and is suitable for the side wall of the lampshade, and the s==: the backlight module further includes the second heat conduction. In one embodiment of the invention, the second The heat conducting member is a single-sided guide and the early thermal conductive adhesive has an adhesive surface adhered to the sidewall of the second portion. In the embodiment of the invention, the point source is a side source. The lampshade has a bottom and a core material. The light source is opposite to the human light surface, and a heat conducting member is connected to the bottom of the light cover. In the embodiment, the second portion of the above-mentioned second portion has a bottom and a side for finding the bottom of the ring. The light source group 134 is adhered to the lamp cover 132 through the thermal conductive adhesive 136. The light source group 134 includes a strip substrate 134a and a plurality of light emitting diodes (LEDs) 134b disposed on the strip substrate 134a. The light-emitting diode 134b is a top-emitting type light-emitting diode for providing light 135 to the light guide plate 120. The light guide plate 120 converts the light 135 into a surface light source, the reflective sheet 150 reflects the light 135, so that the light 135 is emitted from the light exit surface 124 of the light guide plate 120, and the optical film 140 is used to homogenize the surface light source.
在背光模組100中，由於光源單元130可能損壞而需更 換，而為了方便更換光源單元130，光源單元13〇的燈罩132 與散熱板110的側壁112之間以及光源單元130的燈罩132與 散熱板110的底部113之間會留有間隙G及H，以使光源單元 130易於抽取。 此外，發光二極體134b所產生的熱會經由條狀基板134a 與導熱膠136而傳遞至燈罩132。然而，由於燈罩I]〕鱼献 板no的侧壁112及底部113之間存有間隙G及罩h，3:= 體134b所產生的熱無法直接傳導至散熱板u〇的側壁ιΐ2及 底部113’所以習知背光模組1〇〇具有散熱不佳的問題。如此， 發光二極體134b容易因高溫而導致發光效率變差、色偏沉 Shift)以及使用壽命變短等問題。 【發明内容】 本發明提供一種背光模組，以提高散熱效率。 本發明另提出-種液晶顯示裝置，其具有較佳的可靠度。 為達上述優點’本發明提出―種背光模组，其包括 板、導光板以及光源單元。散熱板包括第一部 ”，' 且第二部份適於在一第一位置與一第二位置之間移【了導:板 配置於散熱板之第-部份上。導歧具有人光面，且入光面與 201007279 • 纟本發明之—實施例巾，上述之背光模組更包括第二導熱 件’連接於第二部份的底部。 在ΐ發明之—實施例中’上述之第二導熱件為單面導熱 膠’且單面導熱膠具有—黏貼面，無於第二部份的底部。 在本發明之-實施例中，上述之點光料發光二極體。 在本發明之-實施例中，上述之散熱板與燈罩的材質包括 金屬。 、 在本發明之一實施例中，當第二部份移動而與燈罩接觸 Ο 時，第二部份更與第一部份接觸。 本發明另提出-種液晶顯示裝置，其包括液晶顯示面板、 背光模組以及框架，其中背光模組是配置於液晶顯示面板之一 侧二此背光模組包括散熱板、導光板以及光源單元。散熱板包 括第一部份與第二部份，且第二部份適於在一第一位置與一第 二位置之間移動。導光板是配置於散熱板之第一部份上。導光 板具有入光面，且入光面與第二部份之間形成容置空間。光源 單元包括燈罩與連接燈罩的光源組，且當第二部分位於第一位 & 置時’光源單元適於沿預定方向置入容置空間内。當光源單元 沿預疋方向置入容置空間内後，散熱板之第二部份適於移動至 第一位置以與燈罩接觸。框架與散熱板組立，以包覆液晶顯示 面板、導光板以及光源單元，並暴露出液晶顯示面板的顯示區 域。 在本發明之一實施例中’上述之光源組包括條狀基板以及 配置於條狀基板上的多個點光源。 在本發明之一實施例中’上述之背光模組更包括第一導熱 件，連接於條狀基板與燈罩之間。 ’ 在本發明之一實施例中，上述之第一導熱件為雙面導熱 9 201007279 膠^雙面導熱膠具有二黏貼面，分別黏貼於條狀基板盘燈罩。 、在本發明之一實施例中，上述之點光源為頂部發光型點 源、，燈罩具有底部無壁，料之㈣是與人絲相對，且第 一導熱件是連接於燈罩之側壁。 辟，ί本^之—實f丨料，上述之第二部份具有底部與側 土 一0卩知之侧壁疋與入光面相對，且適於與燈罩之侧壁接 觸0In the backlight module 100, since the light source unit 130 may be damaged, it needs to be replaced, and in order to facilitate the replacement of the light source unit 130, the lamp cover 132 of the light source unit 13 and the side wall 112 of the heat dissipation plate 110 and the lamp cover 132 of the light source unit 130 and the heat dissipation Clearances G and H are left between the bottoms 113 of the plate 110 to facilitate the extraction of the light source unit 130. In addition, heat generated by the LED 134b is transmitted to the globe 132 via the strip substrate 134a and the thermal paste 136. However, due to the gap G and the cover h between the side wall 112 and the bottom 113 of the lamp cover I], the heat generated by the body 134b cannot be directly transmitted to the side wall ι 2 and the bottom of the heat sink u〇. 113' Therefore, the conventional backlight module 1 has a problem of poor heat dissipation. As described above, the light-emitting diode 134b is liable to cause problems such as deterioration in luminous efficiency, color shift, and shortened service life due to high temperature. SUMMARY OF THE INVENTION The present invention provides a backlight module to improve heat dissipation efficiency. The present invention further proposes a liquid crystal display device which has better reliability. In order to achieve the above advantages, the present invention provides a backlight module including a board, a light guide plate, and a light source unit. The heat sink includes a first portion "," and the second portion is adapted to be moved between a first position and a second position. [The guide: the plate is disposed on the first portion of the heat sink. The guide has a human light. And the light-emitting surface of the invention, and the embodiment of the present invention, the backlight module further includes a second heat-conducting member 'connected to the bottom of the second portion. In the embodiment of the invention - the above The second heat conducting member is a single-sided thermal conductive rubber' and the single-sided thermal conductive adhesive has an adhesive surface which is not at the bottom of the second portion. In the embodiment of the invention, the above-mentioned spot light-emitting diode is used. In an embodiment of the invention, the material of the heat dissipation plate and the lamp cover comprises metal. In an embodiment of the invention, when the second portion moves to contact the lamp cover, the second portion is further related to the first portion. The present invention further provides a liquid crystal display device comprising a liquid crystal display panel, a backlight module and a frame, wherein the backlight module is disposed on one side of the liquid crystal display panel, and the backlight module comprises a heat dissipation plate and a light guide plate. Light source unit. The heat sink includes the first part a second portion, wherein the second portion is adapted to move between a first position and a second position. The light guide plate is disposed on the first portion of the heat dissipation plate. The light guide plate has a light incident surface and enters the light An accommodating space is formed between the surface and the second portion. The light source unit includes a lamp cover and a light source group connected to the lamp cover, and when the second portion is located at the first position & the light source unit is adapted to be placed into the accommodating space in a predetermined direction After the light source unit is placed in the accommodating space in the pre-twisting direction, the second portion of the heat dissipating plate is adapted to move to the first position to be in contact with the lamp cover. The frame and the heat dissipating plate are assembled to cover the liquid crystal display panel and guide The light panel and the light source unit expose the display area of the liquid crystal display panel. In one embodiment of the invention, the light source group includes a strip substrate and a plurality of point light sources disposed on the strip substrate. In the embodiment, the backlight module further includes a first heat conducting member connected between the strip substrate and the lamp cover. In an embodiment of the invention, the first heat conducting member is double-sided heat conductive 9 201007279 glue ^ Double-sided guide The glue has two adhesive surfaces which are respectively adhered to the strip substrate disc cover. In an embodiment of the invention, the point light source is a top light-emitting point source, and the lamp cover has a bottom without a wall, and the material (4) is a human silk. In contrast, the first heat conducting member is connected to the side wall of the lamp cover. The second part has a bottom portion and a side wall, and the side wall is opposite to the light incident surface. And suitable for contact with the side wall of the lampshade.
Φ 在本發明之一實施例中，上述之背光模組更包括第二導孰 件，連接於第二部份的侧壁。 在本發明之-實施财，上述之第二導熱件為單面導熱 膠，且單面導熱膠具有黏貼面，黏貼於第二部份的侧壁。 在本發明之一實施例中，上述之點光源為侧邊發光型點光 源，燈罩具有底部與側壁，燈罩之側壁是與入光面相 且 一導熱件是連接於燈罩之底部。 ^ ^ 在本發明之一實施例中，上述之第二部份具有底部與側 壁，第二部份之侧壁是與入光面相對，且第二部份之底部適於 與燈罩之底部接觸。 ' 在本發明之一實施例中，上述之背光模組更包括第二導熱 件，連接於第二部份的底部。 … 在本發明之一實施例中，上述之第二導熱件為單面導熱 膠，且單面導熱膠具有一黏貼面，黏貼於第二部份的底部。 在本發明之一實施例中，上述之點光源為發光二極體。 在本發明之一實施例中，上述之散熱板與燈罩的材質包括 金屬。 在本發明之一實施例中，當第二部份移動而與燈罩接觸 時，第二部份更與第一部份接觸。 201007279 在本發明中’由於散熱板的第二部份是可移動的，所以當 光源單元置入容置空間内後，可調整散熱板的第二部份以使散 熱板的第一部份與燈罩有一接觸。如此，光源組產生的熱可有 效地經由燈罩而傳遞至散熱板，所以本發明之背光模組能提高 散熱效率。此外，由於本發明之背光模組具有較高的散熱效 率’其能避免光源組因溫度過高而降低使用壽命，因此使用此 背光模組的液晶顯示裝置具有較佳的可靠度。 為讓本發明之上述和其他目的、特徵和優點能更明顯易 Ο 懂’下文特舉較佳實施例，並配合所附圖式，作詳細說明如下。 【實施方式】 圖2A與圖2B是本發明一實施例之一種液晶顯示裝置的 不意圖，其中圖2B是圖2A之散熱板定位後的示意圖。請先 參照圖2A，本實施例之液晶顯示裝置20〇包括液晶顯示面板 210、框架220以及背光模組300，其中背光模組300是配置 於液晶顯示面板210之一侧，以提供液晶顯示面板210所需之 面光源。此背光模組300包括散熱板310、導光板320以及光 ❹ 源單元330。散熱板310包括第一部份312與第二部份314， 其中第二部份314適於在一第一位置與一第二位置之間移 動。導光板320是配置於散熱板310之第一部份312上，且導 光板320與第一部份312之間可設有一反射片340。導光板320 具有相鄰的入光面322與出光面324，且入光面322與散熱板 31〇之第二部份314之間形成容置空間S2。此外，框架220 與散熱板310組立，以包覆液晶顯示面板21〇、導光板320、 光源單元330以及反射片340，並暴露出液晶顯示面板210的 一顯示區域212。 承上述，光源單元330是可抽取式的’當散熱板31〇之第 11 201007279 二部分314移動至第一位置（如圖2A所示）時，光源單元33〇 適於沿預定方向（如Z軸）置入容置空間S2内。光源單元33〇 包括燈罩332與連接燈罩332的光源組334，其中光源組334 包括沿Z軸延伸的條狀基板334a以及配置於條狀基板334a上 的多個點光源334b (在圖2A與2B中僅繪示一個點光源 334b) 〇此外’點光源334b是用以提供光線335至導光板320， 導光板320疋用以將光線335轉換成面光源，且面光源是從導 光板320的出光面324出射。反射片340則用以反射光線335, ❹以使光線335從導光板320的出光面324射出。另外，在導光 板320的出光面324可設置多個光學膜370，以將面光源均勻 化。光學膜370可為擴散膜以及增亮膜（Brightness Enhancement Film, BEF )等。 在本實施例中’散熱板310與燈罩332的材質可包括金 屬。此外，背光模組300可更包括一第一導熱件350，其連接 於條狀基板334a與燈罩332之間。此第一導熱件350可為雙 面導熱膠，其具有二黏貼面352、354，分別黏貼於條狀基板 334a與燈罩332。另外，點光源334b例如是發光二極體，但 不以此為限。點光源334b為頂部發光型點光源。燈罩332具 有底部332a與側壁332b ’燈罩332之側壁332b是與導光板 320之入光面322相對，且第一導熱件350是連接於燈罩332 之側壁332b。散熱板310的第二部份314具有底部314a與側 壁314b ’且第二部份314之側壁314b是與入光面322相對。 上述之背光模組300可更包括第二導熱件360，其連接於 第二部份314的側壁314b。此第二導熱件360為單面導熱膠， 其具有一黏貼面362，黏貼於散熱板310之第二部份314的側 壁314b。此外，當將光源單元330沿預定方向（即z軸）置 12 201007279 •=合置空間S2内後，散熱板310的第二部份314適於移動至 第一位置（如圖2B所示）以使第二導熱件36〇與燈罩332接 觸。 更詳細地說，由於散熱板310的第二部份314是可移動 的，所以當光源單元330置入容置空間S2内後，可使散熱板 310的第二部份314朝向接近燈罩332之側壁32沈的方向移 動（即沿X軸向右移動）至第二位置（如圖2B所示），以使 散熱板31〇的第二部份314透過第二導熱件360而與燈罩332 ©，觸。如此，點光源334b所產生的熱，可經由條狀基板洲、 第一導熱件350、燈罩332以及第二導熱件36〇而傳遞至散熱 板310的第二部份314，所以本實施例之背光模組3〇〇具有較 ，的散熱效率。此外，在本實施例中，當散熱板310的第二部 份314移動至第二位置而與燈罩332接觸時，散熱板31()的第 二部份314更與散熱板31〇的第一部份312接觸，如此可增加 散熱面積，以進一步提升散熱效率。另外，由於本實施例之背 光模組30〇具有較佳的散熱效率，所以可避免點光源334b因 ❹ 高溫而產生發光效率變差、色偏以及使用壽命變短等問題。如 此，有助於提升本實施例之液晶顯示裝置200的顯示品質以及 可靠度。 凊參照圖2B，由於本實施例是使用單面導熱膠作為第二 導熱件360，所以燈罩332的侧壁332b雖與第二導熱件360 接觸，但並未黏貼於第二導熱件360。換言之，當光源單元330 損壞而需更換時，可輕易地將散熱板31〇的第二部份314朝向 遠離燈罩332之側壁322b的方向移動（即沿X軸向左移動） 至第一位置（如圖2A所示），以方便更換光源單元330。 需注意的是’雖然在本實施例中’散熱板310的第二部份 13 201007279 314疋透過第一導熱件360而與燈罩332接觸，但在其他實施 例中，散熱板310的第二部份314亦可直接與燈罩332接觸。 也就是說’第二導熱件36〇可以省略。 一，3A與圖3B是本發明另一實施例之一種液晶顯示裝置 的示思圖，其中圖3B是圖3A之散熱板定位後的示意圖。請 先參照圖3A，本實施例之液晶顯示裝置2〇〇，與上述之液晶顯 不裝置200的結構與優點相似，以下僅針對其結構上的差異處 進行說明。在本實施例之液晶顯示裝置2〇〇，申，背光模組3〇〇, © 的光源單元334之點光源334b’為侧邊發光型點光源，且第一 導熱件350是連接於燈罩332之底部332a，亦即光源單元334, ，配置於燈罩332之底部332a上。此外，散熱板31〇，之第二 部份314’具有底部314a，與側壁314b，，其中第二部份314，的 側壁314b’是與導光板32〇的入光面322相對，而第二導熱件 360是連接於散熱板31〇,之第二部份314，的底部314&，。 在本實施例中，當將光源單元33〇,沿預定方向（即2軸） 置入谷置空間S2内後，散熱板31〇’的第二部份314,適於移動 〇 至第二位置（如圖3B所示），以使第二導熱件36〇與燈罩332 接觸。更詳細地說，由於散熱板31〇，的第二部份314，是可移 動的，所以當光源單元330’置入容置空間S2内後，可使散熱 板310’的第二部份314’朝向接近燈罩332之底部322&的方向 移動（即沿γ轴向上移動），以使散熱板31〇，的第二部份314, 透過第二導熱件360而與燈罩332接觸（如圖3B所示）。如 此，點光源334b’所產生的熱，可經由條狀基板334a、第一導 熱件350、燈罩332以及第二導熱件36〇而傳遞至散熱板31〇, 的第二部份314’ ’所以本實施例之背光模組3〇〇，具有較佳的 散熱效率。此外，在本實施例中，當散熱板31〇，的第二部份 201007279 314’移動至第二位置而與燈罩332接觸時，散熱板31〇，第二部 份314’更與散熱板310,第一部份312,接觸，如此可增加散熱 面積，以進一步提升散熱效率。 … 請參照圖3B，由於本實施例是使用單面導熱膠作為第二 導熱件360，所以燈罩332的底部332a雖與第二導熱件36〇In an embodiment of the invention, the backlight module further includes a second guiding member connected to the sidewall of the second portion. In the implementation of the present invention, the second heat conducting member is a single-sided thermal conductive adhesive, and the single-sided thermal conductive adhesive has an adhesive surface adhered to the sidewall of the second portion. In an embodiment of the invention, the point source is a side-emitting type point light source, the lamp cover has a bottom and a side wall, the side wall of the lamp cover is opposite to the light-incident surface, and a heat-conducting member is connected to the bottom of the lamp cover. In one embodiment of the invention, the second portion has a bottom portion and a side wall, the side wall of the second portion is opposite to the light incident surface, and the bottom portion of the second portion is adapted to contact the bottom portion of the lamp cover. . In an embodiment of the invention, the backlight module further includes a second heat conducting member connected to the bottom of the second portion. In an embodiment of the invention, the second heat conducting component is a single-sided thermal conductive adhesive, and the single-sided thermal conductive adhesive has an adhesive surface adhered to the bottom of the second portion. In an embodiment of the invention, the point source is a light emitting diode. In an embodiment of the invention, the material of the heat dissipation plate and the lamp cover comprises metal. In one embodiment of the invention, the second portion is more in contact with the first portion when the second portion is moved into contact with the lamp cover. 201007279 In the present invention, 'because the second part of the heat sink is movable, after the light source unit is placed in the accommodating space, the second part of the heat sink can be adjusted to make the first part of the heat sink The lampshade has a contact. In this way, the heat generated by the light source group can be efficiently transmitted to the heat dissipation plate via the lamp cover, so that the backlight module of the present invention can improve the heat dissipation efficiency. In addition, since the backlight module of the present invention has a high heat dissipation efficiency, which can prevent the light source group from being degraded due to excessive temperature, the liquid crystal display device using the backlight module has better reliability. The above and other objects, features, and advantages of the present invention will become more apparent and understood. 2A and 2B are schematic views of a liquid crystal display device according to an embodiment of the present invention, wherein Fig. 2B is a schematic view of the heat dissipating plate of Fig. 2A after being positioned. Referring to FIG. 2A , the liquid crystal display device 20 of the present embodiment includes a liquid crystal display panel 210 , a frame 220 , and a backlight module 300 . The backlight module 300 is disposed on one side of the liquid crystal display panel 210 to provide a liquid crystal display panel. 210 required surface source. The backlight module 300 includes a heat dissipation plate 310, a light guide plate 320, and an aperture source unit 330. The heat sink 310 includes a first portion 312 and a second portion 314, wherein the second portion 314 is adapted to move between a first position and a second position. The light guide plate 320 is disposed on the first portion 312 of the heat dissipation plate 310, and a reflective sheet 340 is disposed between the light guide plate 320 and the first portion 312. The light guide plate 320 has an adjacent light incident surface 322 and a light exit surface 324, and an accommodating space S2 is formed between the light incident surface 322 and the second portion 314 of the heat dissipation plate 31A. In addition, the frame 220 is assembled with the heat dissipation plate 310 to cover the liquid crystal display panel 21, the light guide plate 320, the light source unit 330, and the reflection sheet 340, and exposes a display area 212 of the liquid crystal display panel 210. In the above, the light source unit 330 is removable. When the second portion 314 of the heat dissipation plate 31 is moved to the first position (as shown in FIG. 2A), the light source unit 33 is adapted to be in a predetermined direction (eg, Z). The shaft) is placed in the accommodating space S2. The light source unit 33A includes a lamp cover 332 and a light source group 334 connected to the lamp cover 332, wherein the light source group 334 includes a strip substrate 334a extending along the Z axis and a plurality of point light sources 334b disposed on the strip substrate 334a (in FIGS. 2A and 2B). Only one point light source 334b is shown. 〇 In addition, the 'point light source 334b is for providing light 335 to the light guide plate 320, the light guide plate 320 is for converting the light 335 into a surface light source, and the surface light source is light from the light guide plate 320. Face 324 exits. The reflection sheet 340 is configured to reflect the light ray 335 so that the light ray 335 is emitted from the light exit surface 324 of the light guide plate 320. In addition, a plurality of optical films 370 may be disposed on the light exit surface 324 of the light guide plate 320 to uniformize the surface light source. The optical film 370 may be a diffusion film or a brightness enhancement film (BEF) or the like. In the present embodiment, the material of the heat sink 310 and the globe 332 may include metal. In addition, the backlight module 300 may further include a first heat conducting member 350 connected between the strip substrate 334a and the lamp cover 332. The first heat conducting member 350 can be a double-sided thermal conductive adhesive having two adhesive surfaces 352 and 354 adhered to the strip substrate 334a and the lamp cover 332, respectively. In addition, the point light source 334b is, for example, a light-emitting diode, but is not limited thereto. The point light source 334b is a top emission type point source. The lamp cover 332 has a bottom portion 332a and a side wall 332b'. The side wall 332b of the lamp cover 332 is opposite to the light incident surface 322 of the light guide plate 320, and the first heat conduction member 350 is connected to the side wall 332b of the lamp cover 332. The second portion 314 of the heat sink 310 has a bottom portion 314a and a side wall 314b' and the side wall 314b of the second portion 314 is opposite the light incident surface 322. The backlight module 300 may further include a second heat conducting member 360 connected to the sidewall 314b of the second portion 314. The second heat conducting member 360 is a single-sided thermal conductive adhesive having an adhesive surface 362 adhered to the side wall 314b of the second portion 314 of the heat dissipation plate 310. In addition, after the light source unit 330 is placed in the predetermined direction (ie, the z-axis) 12 201007279 •=the fit space S2, the second portion 314 of the heat dissipation plate 310 is adapted to move to the first position (as shown in FIG. 2B). The second heat conducting member 36 is brought into contact with the lamp cover 332. In more detail, since the second portion 314 of the heat dissipation plate 310 is movable, after the light source unit 330 is placed in the accommodating space S2, the second portion 314 of the heat dissipation plate 310 can be directed toward the light cover 332. The side wall 32 is moved in the direction of sinking (ie, moving rightward along the X axis) to the second position (as shown in FIG. 2B), so that the second portion 314 of the heat sink 31 is transmitted through the second heat conducting member 360 and the lamp cover 332. ,touch. In this manner, the heat generated by the point source 334b can be transmitted to the second portion 314 of the heat dissipation plate 310 via the strip substrate, the first heat conducting member 350, the lamp cover 332, and the second heat conducting member 36, so that the embodiment is The backlight module 3 has a relatively high heat dissipation efficiency. In addition, in the embodiment, when the second portion 314 of the heat dissipation plate 310 is moved to the second position to be in contact with the lamp cover 332, the second portion 314 of the heat dissipation plate 31 is further connected to the heat dissipation plate 31. Part 312 contacts, which can increase the heat dissipation area to further improve the heat dissipation efficiency. In addition, since the backlight module 30 of the present embodiment has better heat dissipation efficiency, problems such as deterioration of luminous efficiency, color shift, and shortened service life of the point source 334b due to high temperature can be avoided. Thus, it contributes to the improvement of the display quality and reliability of the liquid crystal display device 200 of the present embodiment. Referring to FIG. 2B, since the single-sided thermal conductive adhesive is used as the second heat-conducting member 360, the side wall 332b of the globe 332 is in contact with the second heat-conducting member 360, but is not adhered to the second heat-conducting member 360. In other words, when the light source unit 330 is damaged and needs to be replaced, the second portion 314 of the heat dissipation plate 31〇 can be easily moved away from the side wall 322b of the lamp cover 332 (ie, moved leftward along the X axis) to the first position ( As shown in FIG. 2A), the light source unit 330 is conveniently replaced. It should be noted that although in the present embodiment, the second portion 13 of the heat dissipation plate 310 13 201007279 314 is in contact with the lamp cover 332 through the first heat conduction member 360, in other embodiments, the second portion of the heat dissipation plate 310 The portion 314 can also be in direct contact with the shade 332. That is, the 'second heat conducting member 36' can be omitted. 3A and 3B are schematic views of a liquid crystal display device according to another embodiment of the present invention, wherein Fig. 3B is a schematic view of the heat dissipating plate of Fig. 3A after being positioned. Referring first to Fig. 3A, the liquid crystal display device 2 of the present embodiment is similar to the above-described structure and advantages of the liquid crystal display device 200, and only the differences in structure will be described below. In the liquid crystal display device 2 of the present embodiment, the point source 334b' of the light source unit 334 of the backlight module 3〇〇, © is a side-emitting type point source, and the first heat-conducting member 350 is connected to the lamp cover 332. The bottom portion 332a, that is, the light source unit 334, is disposed on the bottom 332a of the lamp cover 332. In addition, the second portion 314' of the heat dissipation plate 31 has a bottom portion 314a and a side wall 314b, wherein the side wall 314b' of the second portion 314 is opposite to the light incident surface 322 of the light guide plate 32, and the second portion The heat conducting member 360 is connected to the bottom portion 314 & of the second portion 314 of the heat sink 31〇. In this embodiment, after the light source unit 33 is placed in the valley space S2 in a predetermined direction (ie, 2 axes), the second portion 314 of the heat dissipation plate 31'' is adapted to move to the second position. (as shown in FIG. 3B) to bring the second heat conducting member 36A into contact with the lamp cover 332. In more detail, since the second portion 314 of the heat dissipation plate 31 is movable, when the light source unit 330' is placed in the accommodating space S2, the second portion 314 of the heat dissipation plate 310' can be made. 'moving toward the bottom 322 & of the lamp cover 332 (ie, moving in the y-axis direction), so that the second portion 314 of the heat sink 31 is in contact with the lamp cover 332 through the second heat conducting member 360 (as shown in the figure). 3B)). Thus, the heat generated by the point source 334b' can be transmitted to the second portion 314' of the heat sink 31A via the strip substrate 334a, the first heat conducting member 350, the globe 332, and the second heat conducting member 36'. The backlight module 3 of the embodiment has better heat dissipation efficiency. In addition, in the embodiment, when the second portion 201007279 314' of the heat dissipation plate 31 is moved to the second position to be in contact with the lamp cover 332, the heat dissipation plate 31 is closed, and the second portion 314' is further connected to the heat dissipation plate 310. The first part 312, contact, can increase the heat dissipation area to further improve the heat dissipation efficiency. Referring to FIG. 3B, since the single-sided thermal conductive adhesive is used as the second heat-conducting member 360, the bottom portion 332a of the lamp cover 332 is opposite to the second heat-conducting member 36.
❹ 巧巧’但並未黏貼於第二導熱件36〇。換言之，當光源單元33〇, 損，而需更換時，可輕易地將散熱板31〇，的第二部份314，朝 向遠離燈罩332之底部332a的方向移動（即沿γ軸向下移動） 至第=位置（如圖3Α所示），以方便更換光源單元33〇，。 ，>主意的是，雖然在本實施例中，散熱板31〇，的第二部份 是透過第二導熱件36〇而與燈罩332接觸，但在其他實施 ^ ，散熱板310’的第二部份314’亦可直接與燈罩332接觸。 也就是說’第二導熱件36〇可以省略。 列優點上所述，本發明之背光模組及液晶顯示裝置至少具有下 L由於本發明之背光模組的散熱板的第二部份是可移動 移動當光源單元置入容置空間内後，散熱板的第二部份可 而讓#第二位置，以使散熱板的第二部份與燈罩有一接觸，進 此，I源組產生的熱可有效地經由燈罩而傳遞至散熱板。因 本發明之背光模組能提高散熱效率。 免光、7¾由於本發明之背光模組具有較高的散熱效率，所以能避 變短i組!1溫度過高而產生發光效率變差、色偏以及使用壽命 的可靠=題。因此，使用此背光模組的液晶顯示裝置具有較佳 本發明d本發明已以較佳實施例揭露如上，然其並非用以限定 ，所屬技術領域中具有通常知識者，在不脫離本發明之 15 201007279 精神和範圍内，當可作些許之更動與潤飾，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。 【圖式簡單說明】 圖1是習知一種背光模組的示意圖。 圖2A與圖2B是本發明一實施例之一種液晶顯示裝置的 示意圖。 圖3A與圖3B是本發明另一實施例之一種液晶顯示裝置 的示意圖。 〇 【主要元件符號說明】 100、300 :背光模組 110、310 :散熱板 112、 314b、332b :側壁 113、 314a、332a :底部 120、320 :導光板 122、322 :入光面 124、324 :出光面 130、330 :光源單元 V 132、332 :燈罩 134、 334 :光源組 134a、334a :條狀基板 134b :發光二極體 135、 335 :光線 136 :導熱膠 140、370 :光學膜 150、340 :反射片 200 :液晶顯示裝置 16 201007279 210 :液晶顯示面板 212 :顯示區域 220 :框架 312 :第一部份 314 :第二部份 320 :導光板 334b :點光源 350 :第一導熱件 352、354、362 ··黏貼面 360 :第二導熱件 G、Η :間隙 SI、S2 :容置空間 ❹ 17巧 Qiaoqiao' but did not stick to the second heat conducting member 36〇. In other words, when the light source unit 33 is damaged and needs to be replaced, the second portion 314 of the heat sink 31〇 can be easily moved away from the bottom 332a of the lamp cover 332 (ie, moved downward along the γ axis). To the = position (as shown in Figure 3A), to facilitate the replacement of the light source unit 33〇. , the idea is that, in the present embodiment, the second portion of the heat dissipation plate 31 is in contact with the lamp cover 332 through the second heat conduction member 36, but in other implementations, the heat dissipation plate 310' The two portions 314' can also be in direct contact with the shade 332. That is, the 'second heat conducting member 36' can be omitted. The backlight module and the liquid crystal display device of the present invention have at least the lower layer L. The second portion of the heat dissipation plate of the backlight module of the present invention is movable. When the light source unit is placed in the accommodating space, The second portion of the heat sink can have a #2 position such that the second portion of the heat sink has a contact with the lamp housing. In this case, heat generated by the I source group can be efficiently transmitted to the heat sink via the lamp cover. The backlight module of the present invention can improve heat dissipation efficiency. Light-free, 73⁄4 Since the backlight module of the present invention has high heat dissipation efficiency, it can avoid the short i group! 1 The temperature is too high and the luminous efficiency is deteriorated, the color shift and the service life are reliable. Therefore, the liquid crystal display device using the backlight module has the preferred embodiment of the present invention. The present invention has been disclosed in the preferred embodiments as above, but it is not intended to be limiting, and those skilled in the art can not deviate from the present invention. 15 201007279 In the spirit and scope, the scope of protection of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a conventional backlight module. 2A and 2B are schematic views of a liquid crystal display device according to an embodiment of the present invention. 3A and 3B are schematic views of a liquid crystal display device according to another embodiment of the present invention. 〇 [Main component symbol description] 100, 300: backlight module 110, 310: heat dissipation plate 112, 314b, 332b: side walls 113, 314a, 332a: bottom 120, 320: light guide plates 122, 322: light entrance surface 124, 324 Light-emitting surface 130, 330: light source unit V 132, 332: lamp cover 134, 334: light source group 134a, 334a: strip substrate 134b: light-emitting diode 135, 335: light 136: thermal paste 140, 370: optical film 150 340: reflective sheet 200: liquid crystal display device 16 201007279 210: liquid crystal display panel 212: display area 220: frame 312: first portion 314: second portion 320: light guide plate 334b: point light source 350: first heat conductive member 352, 354, 362 ··Adhesive surface 360: Second heat-conducting member G, Η: gap SI, S2: accommodating space ❹ 17