201039021 . 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種支撐裝置，特別關於—種可調式支 撐裝置及其應用之直下式背光模組及液日日日顯示裝置。 【先前技術】 ^關1所示，f知技術提出—種直下式背光模組 匕3-背板11、至少二支撐裝置12、—光學 及至少一光源（圖未顯示）。盆 、 相U 5又置在直下式背光模 的平面顯示面板（圖未顯示）之間的光學膜 =3可用以提高直下_光模組1的亮度，並使光源 句勾化’且當光源由多種色光所構成時，光學膜片植Η ，、先源之間需保持-定間距，如此不同色光的光源才有足 夠的距離進行混光，並 ’、有足 顯示面板。 ^光予膜片組13以射出至平面 光模顯4置的尺寸越來越多樣化，故背 尺寸也因此不同’舉例來說，不 外，改變背光模組中混㈣背光模組，另 裝置必要的##，θ 疋不问尺寸的平面顯示 組，在習知射-中目 因應各種混光距離的背光模 出不ϋ 須開發具有不同尺寸的模且以製作 出不同規格的支撐件，卓妙几# μ W兴，、Μ衣忭 時，其混光距離也會因:源種^为光模組中的光源變更 的改變。 ’、種肩的不同而必須進行相對應 201039021 因此，如何提供一種支撐裝置能應用於不同尺寸的背 光模組，並提供適當的混光距離以避免影響背光模組的出 光效果，實屬當前重要課題之一。 【發明内容】 有鑑於上述課題，本發明之目的為提供一種可調式支 撐裝置及其應用之直下式背光模組與液晶顯示裝置，能夠 應用於不同尺寸的背光模組以提供適當的混光距離，使背 Ο 光模組的出光效果不受影響。 為達上述目的，本發明所揭露的一種可調式支稽裝置 組裝於一直下式背光模組的一背板用以頂撐一光學膜片 組。可調式支撐裝置包含一固定件及一延伸件。固定件連 結於背板；延伸件連結於固定件，延伸件可調整至少二高 度。 為達上述目的，依據本發明之一種直下式背光模組包 含一背板、一光學膜片組、複數個光學元件及複數個可調 ° 式支撐裝置。光學膜片組與背板相對而設；此等光學元件 相對固定於背板與光學膜片組之間；此等可調式支撐裝置 鄰設於此等光學元件，此等可調式支撐裝置組裝於背板且 頂撐光學膜片組。可調式支撐裝置包含一固定件及一延伸 件。固定件連結於背板；延伸件連結於固定件，延伸件可 調整至少二高度。 為達上述目的，依據本發明之一種液晶顯示裝置。包 含一液晶顯示面板及一直下式背光模組。直下式背光模組 5 201039021 與液晶顯示面板對應設置，直下式背光模組包含一背板、 一光學膜片組、複數個光學元件及複數個可調式支撐裝 置。光學膜片組與背板相對而設；此等光學元件相對固定 於背板與光學膜片組之間；此等可調式支撐裝置鄰設於此 等光學元件，此等可調式支撐裝置組裝於背板且頂撐光學 膜片組。可調式支撐裝置包含一固定件及一延伸件。固定 件連結於背板；延伸件連結於固定件，延伸件可調整至少 二高度。 承上所述，因依據本發明之一種可調式支撐裝置及其 應用直下式背光模組與液晶顯示裝置，藉由延伸件的設 置，可提供不同高度的支撐距離，可廣泛應用於不同尺寸 的直下式背光模組與液晶顯示裝置，藉以提供背光模組中 的發光元件與光學膜片組所需的混光距離，與習知技術相 較，由於不需針對各種不同尺寸的背光模組而開發不同的 模具以製作出對應的支撐裝置，是以，能大幅降低支撐裝 置的製造成本，且亦可同時確保背光模組的出光效果。 【實施方式】 以下將參照相關圖式，說明依據本發明較佳實施例之 一種可調式支撐裝置及其應用之直下式背光模組及液晶 顯示裝置，其中相同的元件將以相同的符號加以說明。 請同時參照圖2A、圖2B及圖2C所示，圖2A為本發 明較佳實施例之一種可調式支撐裝置的結構示意圖；圖2B 為可調式支撐裝置在一高度h的結構示意圖；圖2C為可 201039021 調式支撐裝置在另一高度Η的結構示意圖。 如圖2Α所示，可調式支撐裝置22a組裝於一直下式 背光模組2a的一背板21a，且可調式支撐裝置22a頂撐於 一光學膜片組23。可調式支撐裝置22a包含一固定件221a 及一延伸件222a，其中，固定件221a連結於背板21a，延 伸件222a則連結於固定件221a，且延伸件222a可調整至 少二高度h、H，如圖2B及圖2C所示。 於此，可調式支撐裝置22a藉由黏合的方式設置在背 Ο 板21a的一表面為例說明，如圖2A所示，當然，可調式 支撐裝置22a與背板21a亦可藉由扣合、卡合、螺鎖或其 組合等方式將可調式支撐裝置22a連結於背板21a。固定 件221a及延伸件222a的表面具有光反射性質，固定件 221a及延伸件222a的材質可以為金屬、塑膠或其組合， 並於表面形成反射材質，當然亦可依實際需要直接以反射 材質製成固定件221a及延伸件222a，因此可藉由固定件 221a、延伸件222a的表面的反射性質以反射光線，使直下 式背光模組2a的出光效率不會因為可調式支撐裝置22a 的設置而降低。 值得一提的是，由於光學膜片組23由至少一擴散膜 片、至少一增亮膜片或其組合所構成，因此具有一定的重 量。是以，延伸件222a頂撐於光學膜片組23的區域為一 鈍錐狀端部A，俾使光學膜片組23與延伸件222a的接觸 位置不會因為光學膜片組23本身的重量而導致穿刺、破 裂的情況，藉以提供充足且均勻的出光效果。另外，藉由 7 201039021 鈍錐狀端部A的設計以使可調式支撐裝置22a與光學膜片 組23的接觸面積縮小，是以，可顯著地降低可調式支撐 裝置22a對於直下式背光模組2a出光效果的影響。 更詳細來說，根據圖2B與圖2C所示，可調式支撐裝 置22a中的延伸件222a與固定件221a是利用卡合的方式 以彼此連結，也因此，當延伸件222a自高度h調整至高度 Η時，延伸件222a藉由在垂直方向上的移動以延伸至不同 的高度。且對於不同尺寸的背光模組而言，可將調整至特 定高度的可調式支撐裝置22a分別連結於與其對應的背光 模組内；因此無須針對不同尺寸的背光模組而設計出不同 高度的支撐裝置，藉此降低製程的成本。 當然，上述的固定件221a與延伸件222a亦可依實際 需要以扣合、黏著、螺接或其組合等方式彼此連結。舉例 來說，如圖3A與圖3B所示，其為本發明較佳實施例之另 一種可調式支撐裝置的結構示意圖，其中圖3A為可調式 支撐裝置在一高度h的結構示意圖；圖3B為可調式支撐 裝置在另一高度Η的結構示意圖。在此實施例中的可調式 支撐裝置22b包含一固定件221b及一延伸件222b，且可 調式支撐裝置22b可具有至少二高度h、H。可調式支撐裝 置22b與上述可調式支撐裝置22a (如圖2A、圖2B、圖 2C所示）不同之處在於：固定件221b與延伸件222b是藉 由螺接方式彼此連結，因此，延伸件222b藉由轉動的方 式以改變其與固定件221b之間的相對位置。進一步，在 調整延伸件222b至所需的特定高度後，可在延伸件222b 201039021 之螺紋與固定件221b連結之接面點上膠，固定住延伸件 222b與固定件221b的相對位置，避免產品使用過程中延 伸件222b高度改變造成影像上的缺陷；另外亦可使延伸 件222b或固定件221b之螺牙為略具有彈性的材質且其配 合為緊配合，如此，延伸件222b與固定件221b鎖接時， 一方面可以有足夠的摩擦力避免相對位置改變，一方面也 可以提供組裝人員調整延伸件222b之高度。於此，以固 定件221b設有内螺紋而延伸件222b設有外螺紋為例說 〇 明，然不限制本發明。且值得注意的是，本實施例中的可 調式支撐裝置22b藉由轉動的方式來延伸高度，因此可具 有更多高度的變化，藉以更精準地控制背光模組的混光距 離。 請同時參照圖4A及圖4B所示，其為本發明較佳實 施例之再一種可調式支撐裝置的結構示意圖，其中圖4A 為可調式支撐裝置在一高度h的結構示意圖；圖4B為可 調式支撐裝置在另一高度Η的結構示意圖。可調式支撐裝 置22c組裝於一直下式背光模組2c的一背板21c，背板21c 具有至少一穿孔211。直下式背光模組2c與上述直下式背 光模組2a (圖2A所示）不同之處在於：可調式支撐裝置 22c可直接穿過背板21c穿孔211、反射片或膠框（圖未顯 示）等其他背光模組的周邊元件，以使可調式支撐裝置22c 可更簡易地組裝於直下式背光模組2c。 可調式支撐裝置22c與上述的可調式支撐裝置22a(圖 2A所示）及可調式支撐裝置22b (圖3A所示）不同之處 9 201039021 在於可調式支撐裝置22c除包含一固定件221c及一延伸件 222c更設有一調節件24。調節件24連結於延伸件222c 與固定件221c，是以，當調節件24作動時可帶動延伸件 222c，換言之，藉由調整調節件24以調節延伸件222c的 延伸高度。 於此，調節件24可藉由黏合、扣合、卡合、螺鎖或 其組合等方式與延伸件222c連結，當然亦可依實際需要更 可將調節件24與延伸件222c製作為一體成形（圖未顯示） 之結構者。 此外，調節件24更穿過背板21c的穿孔211並連結於 固定件221c。調節件24具有一旋部241外露於直下式背 光模組2c的穿孔211，是以，在組裝可調式支撐裝置22c 時可經由外露的旋部241進行微調，以在無須拆卸直下式 背光模組2c之周邊元件的前提下，即可調整可調式支撐裝 置22c的支撐高度，以使直下式背光模組2c具有適當的混 光距離，如圖4B所示。而於調整確定後，亦可如前述之 實施例之方法來固定延伸件222c與固定件221c相對位 置，於此不再贅述。 請參照圖5所示，其為本發明較佳實施例之一種液晶 顯示裝置的結構示意圖。在此，以可調式支撐裝置22a應 用於液晶顯示裝置的直下式背光模組2a為例說明，當然亦 可依實際需要以搭配可調式支撐裝置22b之直下式背光模 組2a，或搭配可調式支撐裝置22c之直下式背光模組2c， 並可應用於不同尺寸的液晶顯示裝置。 10 201039021 液晶顯示裝置包含一液晶顯示面板4及一直下式背光 模組2a;直下式背光模組2a與液晶顯示面板4對應設置。 直下式背光模組2a以詳述於上，故於此不再贅述。液晶顯 示面板4利用一上偏光片及一下偏光片來炎設一液晶單 元，而經由直下式背光模組2a所供應的背光源來顯示晝 面。 綜上所述，因依據本發明之一種可調式支撐裝置及其 應用直下式背光模組與液晶顯示裝置，藉由延伸件的設 〇 置，可提供不同高度的支撐距離，可廣泛應用於不同尺寸 的直下式背光模組與液晶顯示裝置，藉以提供背光模組中 的發光元件與光學膜片組所需的混光距離，與習知技術相 較，能大幅降低不同高度的支撐裝置所需的製造成本，且 不影響背光模組的出光效果。 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 ❹ 【圖式簡單說明】 圖1為一示意圖，顯示習知一種背光模組的結構示意 圖， 圖2A為一示意圖，其為本發明較佳實施例之一種可 調式支撐裝置的結構示意圖； . 圖2B為一示意圖，其為本發明較佳實施例之一種可 調式支撐裝置在一局度的結構示意圖， 11 201039021 圖2C為一示意圖，其為本發明較佳實施例之一種可 調式支撐裝置在另一高度的結構示意圖； 圖3A為一示意圖，其為本發明較佳實施例之另一種 可調式支撐裝置在一高度的結構示意圖； 圖3B為一示意圖，其為本發明較佳實施例之另一種 可調式支撐裝置在另一高度的結構示意圖； 圖4A為一示意圖，其為本發明較佳實施例之再一種 可調式支撐裝置在一高度的結構示意圖； 圖4B為一示意圖，其為本發明較佳實施例之再一種 可調式支撐裝置在另一高度的結構示意圖；以及 圖5為本發明較佳實施例之一種液晶顯示裝置的結構 示意圖。 【主要元件符號說明】 I、 2a、2c :直下式背光模組 II、 21a、21c :背板 12 :支撐裝置 13、23 :光學膜片組 22a、22b、22c :可調式支撐裝置 211 :穿孔 221a、221b、221c :固定件 222a、222b、222c :延伸件 24 :調節件 241 :旋部 12 201039021 4 :液晶顯示面板 _ A:錐狀端部 Η、h :高度201039021. VI. Description of the Invention: [Technical Field] The present invention relates to a supporting device, and more particularly to an adjustable supporting device and a direct-type backlight module thereof and a liquid-day day-and-day display device. [Prior Art] As shown in Fig. 1, a direct-lit backlight module 匕3-backplane 11, at least two supporting devices 12, optical and at least one light source (not shown) are proposed. The optical film = 3 between the basin, the phase U 5 and the flat display panel (not shown) of the direct type backlight module can be used to increase the brightness of the direct-light module 1 and make the light source singularly When composed of a variety of color lights, the optical film is planted, and the distance between the precursors must be kept at a constant distance, so that the light sources of different color lights have sufficient distance for mixing, and have a display panel. ^The light is given to the diaphragm group 13 to be more and more diversified in size to be emitted to the flat optical mode, so the back size is also different. For example, however, the backlight module is changed in the backlight module, and the backlight module is changed. The necessary ##, θ 疋 is not required for the size of the flat display group. In the conventional shooting, the backlights of various light-mixing distances are not required to develop the molds with different sizes and to produce different specifications of the support. , Zhuo Miaoji # μ W Xing, Μ 忭, the light mixing distance will also be due to: the source species ^ is the change of the light source in the optical module. ', the shoulders must be different. 201039021 Therefore, how to provide a support device can be applied to different sizes of backlight modules, and provide appropriate mixing distance to avoid affecting the light-emitting effect of the backlight module, it is currently important One of the topics. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an adjustable support device and a direct-lit backlight module and a liquid crystal display device thereof, which can be applied to backlight modules of different sizes to provide an appropriate light mixing distance. So that the light output effect of the back light module is not affected. To achieve the above objective, an adjustable inspection device disclosed in the present invention is assembled on a back plate of a direct-type backlight module for supporting an optical film assembly. The adjustable support device comprises a fixing member and an extension member. The fixing member is coupled to the back plate; the extension member is coupled to the fixing member, and the extension member is adjustable by at least two degrees. To achieve the above object, a direct type backlight module according to the present invention comprises a back plate, an optical film set, a plurality of optical elements, and a plurality of adjustable support devices. The optical film set is opposite to the back plate; the optical elements are relatively fixed between the back plate and the optical film set; the adjustable support devices are adjacent to the optical components, and the adjustable support devices are assembled The back plate and the top optical film set. The adjustable support device comprises a fixing member and an extension member. The fixing member is coupled to the back plate; the extension member is coupled to the fixing member, and the extension member is adjustable by at least two heights. To achieve the above object, a liquid crystal display device according to the present invention. It includes a liquid crystal display panel and a continuous backlight module. Direct-type backlight module 5 201039021 Corresponding to the liquid crystal display panel, the direct-lit backlight module comprises a back plate, an optical film group, a plurality of optical components and a plurality of adjustable supporting devices. The optical film set is opposite to the back plate; the optical elements are relatively fixed between the back plate and the optical film set; the adjustable support devices are adjacent to the optical components, and the adjustable support devices are assembled The back plate and the top optical film set. The adjustable support device comprises a fixing member and an extension member. The fixing member is coupled to the back plate; the extension member is coupled to the fixing member, and the extension member is adjustable by at least two heights. According to the above, an adjustable support device and a direct-type backlight module and a liquid crystal display device thereof according to the present invention can provide support distances of different heights by the arrangement of the extension members, and can be widely applied to different sizes. The direct-lit backlight module and the liquid crystal display device provide the light-mixing distance required for the light-emitting element and the optical film group in the backlight module, compared with the conventional technology, since it is not required for various sizes of backlight modules. The development of different molds to produce a corresponding support device can greatly reduce the manufacturing cost of the support device, and at the same time ensure the light-emitting effect of the backlight module. [Embodiment] Hereinafter, an adjustable support device and a direct-type backlight module and a liquid crystal display device thereof according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals. . 2A, FIG. 2B and FIG. 2C, FIG. 2A is a schematic structural view of an adjustable supporting device according to a preferred embodiment of the present invention; FIG. 2B is a structural schematic view of the adjustable supporting device at a height h; It is a schematic diagram of the structure of the 201039021 adjustable support device at another height. As shown in FIG. 2A, the adjustable supporting device 22a is assembled to a back plate 21a of the underlying backlight module 2a, and the adjustable supporting device 22a is supported by an optical film group 23. The adjustable support device 22a includes a fixing member 221a and an extension member 222a. The fixing member 221a is coupled to the backing plate 21a, the extension member 222a is coupled to the fixing member 221a, and the extension member 222a is adjustable by at least two heights h, H. 2B and 2C. Here, the adjustable supporting device 22a is disposed on a surface of the backing plate 21a by adhesive bonding, as shown in FIG. 2A. Of course, the adjustable supporting device 22a and the backing plate 21a can also be engaged, The adjustable support device 22a is coupled to the back plate 21a by a snap fit, a screw lock, or a combination thereof. The surface of the fixing member 221a and the extending member 222a has a light reflecting property, and the fixing member 221a and the extending member 222a may be made of metal, plastic or a combination thereof, and form a reflective material on the surface, and may be directly made of a reflective material according to actual needs. The fixing member 221a and the extending member 222a can reflect light by the reflective property of the surface of the fixing member 221a and the extending member 222a, so that the light-emitting efficiency of the direct-type backlight module 2a is not caused by the setting of the adjustable supporting device 22a. reduce. It is worth mentioning that since the optical film group 23 is composed of at least one diffusion film, at least one brightness enhancement film or a combination thereof, it has a certain weight. Therefore, the region where the extension member 222a is supported by the optical film group 23 is a blunt tapered end portion A, so that the contact position of the optical film group 23 with the extension member 222a is not due to the weight of the optical film group 23 itself. This leads to puncture and rupture, thereby providing a sufficient and uniform light-emitting effect. In addition, the design of the blunt tapered end A by 7 201039021 reduces the contact area of the adjustable supporting device 22a and the optical film group 23, so that the adjustable supporting device 22a can be significantly reduced for the direct type backlight module. 2a effect of light output. In more detail, as shown in FIG. 2B and FIG. 2C, the extension member 222a and the fixing member 221a of the adjustable support device 22a are coupled to each other by means of engagement, and thus, when the extension member 222a is adjusted from the height h to When the height is high, the extensions 222a extend to different heights by movement in the vertical direction. For different size backlight modules, the adjustable support device 22a adjusted to a specific height can be respectively connected to the corresponding backlight module; therefore, it is not necessary to design different height supports for different size backlight modules. Device, thereby reducing the cost of the process. Of course, the fixing member 221a and the extending member 222a may be coupled to each other by fastening, adhesion, screwing, or a combination thereof as needed. For example, as shown in FIG. 3A and FIG. 3B, FIG. 3A is a schematic structural view of another adjustable supporting device according to a preferred embodiment of the present invention, wherein FIG. 3A is a structural schematic view of the adjustable supporting device at a height h; FIG. A schematic view of the structure of the adjustable support device at another height. The adjustable support device 22b in this embodiment includes a fixing member 221b and an extension member 222b, and the adjustable support device 22b can have at least two heights h, H. The adjustable support device 22b is different from the adjustable support device 22a (as shown in FIG. 2A, FIG. 2B, FIG. 2C) in that the fixing member 221b and the extension member 222b are connected to each other by screwing, and therefore, the extension member The 222b is rotated to change its relative position with the fixing member 221b. Further, after the extension member 222b is adjusted to a desired height, the joint between the thread of the extension member 222b 201039021 and the fixing member 221b can be glued to fix the relative position of the extension member 222b and the fixing member 221b to avoid the product. During the use, the height of the extension member 222b is changed to cause defects on the image; in addition, the screw of the extension member 222b or the fixing member 221b may be a slightly elastic material and the fit thereof is a tight fit. Thus, the extension member 222b and the fixing member 221b When the lock is connected, on the one hand, there is sufficient friction to avoid the relative position change, and on the other hand, the height of the extension member 222b can be adjusted by the assembler. Here, the invention is not limited to the case where the fixing member 221b is provided with an internal thread and the extension member 222b is provided with an external thread. It is also worth noting that the adjustable support device 22b in this embodiment extends the height by means of rotation, so that it can have more height variations, so as to more accurately control the light mixing distance of the backlight module. Please refer to FIG. 4A and FIG. 4B , which are schematic structural diagrams of still another adjustable supporting device according to a preferred embodiment of the present invention, wherein FIG. 4A is a structural schematic view of the adjustable supporting device at a height h; FIG. 4B is a schematic view; Schematic diagram of the tuned support device at another height. The adjustable support device 22c is assembled to a back plate 21c of the always-on backlight module 2c, and the back plate 21c has at least one through hole 211. The direct type backlight module 2c is different from the above-mentioned direct type backlight module 2a (shown in FIG. 2A) in that the adjustable supporting device 22c can directly pass through the back plate 21c through the hole 211, the reflective sheet or the plastic frame (not shown). The peripheral components of other backlight modules are such that the adjustable support device 22c can be more easily assembled to the direct type backlight module 2c. The adjustable support device 22c differs from the above-described adjustable support device 22a (shown in FIG. 2A) and the adjustable support device 22b (shown in FIG. 3A). 9 201039021 is that the adjustable support device 22c includes a fixing member 221c and a The extension member 222c is further provided with an adjustment member 24. The adjusting member 24 is coupled to the extending member 222c and the fixing member 221c so that the extending member 222c can be driven when the adjusting member 24 is actuated, in other words, by adjusting the adjusting member 24 to adjust the extending height of the extending member 222c. In this case, the adjusting member 24 can be coupled to the extending member 222c by means of bonding, snapping, snapping, screwing, or a combination thereof. Alternatively, the adjusting member 24 and the extending member 222c can be integrally formed according to actual needs. The structure of the figure (not shown). Further, the adjusting member 24 passes through the through hole 211 of the backing plate 21c and is coupled to the fixing member 221c. The adjusting member 24 has a through hole 211 exposed by the rotating portion 241 of the direct type backlight module 2c, so that the adjustable rotating portion 241 can be finely adjusted when the adjustable supporting device 22c is assembled, so that the direct type backlight module does not need to be disassembled. Under the premise of the peripheral components of 2c, the support height of the adjustable support device 22c can be adjusted so that the direct type backlight module 2c has an appropriate light mixing distance, as shown in FIG. 4B. After the adjustment is determined, the relative position of the extension member 222c and the fixing member 221c can be fixed as in the foregoing embodiment, and details are not described herein. Referring to FIG. 5, it is a schematic structural view of a liquid crystal display device according to a preferred embodiment of the present invention. Here, the direct-type backlight module 2a of the liquid crystal display device is used as an example for description, and of course, the direct-type backlight module 2a with the adjustable support device 22b may be used according to actual needs, or may be adjusted with an adjustable type. The direct type backlight module 2c of the supporting device 22c can be applied to liquid crystal display devices of different sizes. 10 201039021 The liquid crystal display device comprises a liquid crystal display panel 4 and a direct-type backlight module 2a; and the direct-lit backlight module 2a is disposed corresponding to the liquid crystal display panel 4. The direct type backlight module 2a is described in detail above, and thus will not be described again. The liquid crystal display panel 4 uses a top polarizer and a lower polarizer to illuminate a liquid crystal cell, and displays the face through a backlight supplied from the direct type backlight module 2a. In summary, the adjustable support device and the direct-type backlight module and the liquid crystal display device according to the present invention can provide support distances of different heights by the arrangement of the extension members, and can be widely applied to different The direct-type backlight module and the liquid crystal display device of the size provide the light-mixing distance required for the light-emitting element and the optical film group in the backlight module, and can greatly reduce the support device of different heights compared with the prior art. The manufacturing cost does not affect the light-emitting effect of the backlight module. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a structure of a conventional backlight module, and FIG. 2A is a schematic view showing a structure of an adjustable supporting device according to a preferred embodiment of the present invention; 2B is a schematic view showing a structure of an adjustable support device according to a preferred embodiment of the present invention. 11 201039021 FIG. 2C is a schematic view showing an adjustable support device according to a preferred embodiment of the present invention. FIG. 3A is a schematic view showing another adjustable support device according to a preferred embodiment of the present invention. FIG. 3B is a schematic view showing a preferred embodiment of the present invention. FIG. 4A is a schematic view showing a structure of a further adjustable support device according to a preferred embodiment of the present invention; FIG. 4B is a schematic view showing a schematic view of another adjustable support device at another height; FIG. Another structural schematic view of another adjustable support device according to a preferred embodiment of the present invention; and FIG. 5 is a preferred embodiment of the present invention. Schematic diagram of the structure of a liquid crystal display device. [Main component symbol description] I, 2a, 2c: Direct type backlight module II, 21a, 21c: Back plate 12: Supporting device 13, 23: Optical film group 22a, 22b, 22c: Adjustable supporting device 211: Perforation 221a, 221b, 221c: fixing member 222a, 222b, 222c: extension member 24: adjusting member 241: screw portion 12 201039021 4: liquid crystal display panel _ A: tapered end portion h, h: height
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