200842448 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及其應用，且特別是有關 於一種適用背光模組的背板及其應用。 ~ 【先前技術】 背光模組係泛指可提供面光源的光學組件，目前普遍運 用在各種資訊、通訊、消費產品等產品之液晶顯示器（Liquid €) Crystal Display，LCD )上。一般而言背光模組主要是由三個 部分所組成：背板、光學膜片及光源。通常依照結構不同可 區分為側光式與直下式兩種，目前大尺寸液晶顯示器大多採 用直下式背光模組。以直下式背光模組為例，一般係採用冷 陰極燈管（cold Cathode Fluorescent Lamp ; CCFL )、熱陰極 管（HCFL)、發光二極體（LED)等作為光源。然而隨著顯示器 尺寸的日益增大，位於背光模組内部之光源與光學膜片，容 易因為燈管通電產熱，再加上重力影響使光學膜片的剛性不 Ο 足而產生曲翘變形，因而影響顯示器的顯示品質。 為了解決此一問題，習知技術採用複數個支撐件設置於 背板上，藉以固定燈管並支撐光學膜片，防止燈管和光學薄 β 膜產生翹曲。例如，請參照第1圖，第1圖係繪示一種傳統 支撐件101的結構示意圖。其中支撐件101包含複數個用來 夾制並固定燈管的燈管固定單元102,和一個支撐光學膜片 的支撐單元104，凸設於支撐件101的上表面l〇la。而支撐 件101則係藉由位於下表面l〇lb之黏膠105,黏著固定於背 5 200842448 光模組的背板100上。 然而，黏膠105容易因受熱而產生物理化學變化，例如 軟化或脆化，而失效，極易在或加工過程受外力撞擊而脫落。 又請再參照第2圖，第2圖係繪示另一種傳統支撐件201 ~ 的結構示意圖。其中支撐件201包含凸設於支撐件201的上 ‘ 表面201a用來夾制並固定燈管的複數個燈管固定單元 202，，以及一個支撐光學膜片的支撐單元203。支撐件201 的下表面201b則凸設有至少兩個固定柱204a和204b。將固 定柱204a和204b別穿設於背光模組之背板200上的兩個弧 形窄孔205a和205b中。調整固定柱204a和204b在兩個窄 孔之間的相對位置，利用將支撐件201卡設於背板200上。 然而，支撐件201係以可動的方式，藉由固定柱204a 和204b卡設於弧形窄孔205a和205b中，遇到撞擊容易鬆 脫，固定柱204a和204b多為塑化材質容易因受熱而碎化斷 裂。 另外，請參照第3圖，第3圖係繪示又一種傳統支撐件 G 301的結構示意圖。其中支撐件301包含複數個用來夾制並 固定燈管的燈管固定單元302,和一個支撐光學膜片的支撐 單元304，凸設於支撐件301的上表面301a。而支撐件301 則係藉由位於下表面301b之固定鉤305a和305b，嵌設固定 於背光模組的背板300上的貫穿孔306a和306b。 然而，固定鉤組裝不易，且以固定鉤固定，支撐件301 與背板之間，容易因密合度不足，而產生噪音。 又請再參照第4圖，第4圖係繪示再一種傳統支撐件401 6 200842448 的結構示意圖。其中支撐件401包含一個支樓光學膜片407 的支撐柱404，設於背光模組之背板4〇〇的上表面4〇〇a上， 並藉由一鎖固元件405，例如螺絲，由背板4〇〇的下表面 400b，穿設進入背板400和支撐柱404中，將支撐柱404螺 鎖於背板400的上表面400a上。 然而，鎖固元件的使用，不僅會增加背光模組的組裝工 序，且增加材料成本。 因此有需要提供一種具有構造簡單、組裝方便之光學膜 片支撐件的背光模組背板，可防止因外力衝擊而使支撐件自 背板脫落。 【發明内容】 本發明的目的就是在提供一種適用於背光模組的背 板，此背板包括一個底面，此底面具有至少一個第一支撐 件’-體成形地凸設於底面上，這些第-支撐件係用以支撐 背光模組的光學膜片。 承上所述，本發明之背板更包括至少一鎖固孔，以及至 少-第二支撐件’每-該些第二支撐件具有—螺紋結構與該 些鎖固孔之螺旋狀凸緣匹’藉以將該些第二支撐件固定於 該底面之上。 承上所述其中該第一以及二支撐件更可具有一突出 部’凸出於該第二支撐件的一表面，以形成一夾制空間，用 來夾制並固定一光源。 本發明的另—目的就是在提供-種背光模組，包括··背 7 200842448 板、光源以及光學膜片。 月板具有光出射口以及與光出射口相對的底面，且底面 具有具有至少n料，—體成形地凸設於底面上。光 . 源位於底面與光出射口之間。S學膜片位於支擇件與光出射 口之間，支撐件係用來支撐光學膜片。 一本發明的又一目的就是在提供一種液晶顯示器，此液晶 顯示器包括：液晶顯示面板以及背光模組， 光 鄰設於液晶顯示面板，且此背光模組又包括：背:、光源: 1 ’ 及光學膜片。 背板具有光出射口以及與光出射Π相對的底面，且底面 了有具有至4 -第—支揮件，—體成形地凸^於底面上。光 學膜片位於支擇件與光出射口之間，支撐件係用來支撐光學 膜片。 、根據以上所述之較佳實施例，本發明之技術特徵係在背 光模組的背板上採用與背板—體成形的支撐件來支撐背光 模㈣光學膜片與燈管。其巾支撐件係採㈣壓或模具使支 芽件直接由月板凸出，具有構造簡單、組裝方便以及不易因 外力衝擊而掉落或位移等優點，以解決上述習知技術的問 【實施方式】 本發明的目的就是在提供—種構造簡單、組裝方便以及 不易口外力衝擊而掉落或位移的背光模組背板，為讓本發明 目的特徵、優點、製作方法與使用方式能更明顯易懂， 8 200842448 以下將以一種適用於液晶顯示器之直下式背光模組來加以 說明。但值得注意的是，這些實施例僅用以說明本發明的技 術内容，而非用以限制本發明之範圍。在本發明的其它實施 例之中，本發明所提供的背板亦適用於其他形式的背光模 組。 _ 請參照第5圖，第5圖係根據本發明的第一較佳實施例 所繪示之一種液晶顯示器50的結構剖面圖。在本實施例之 中，液晶顯示器50包含液晶顯示面板520和鄰設於液晶顯 示面板520的背光模組500。其中，背光模組500包括背板 501、反射板503、光學膜片505以及光源509。 背板501係一背光模組的殼體結構，具有一個光出射口 501a以及底面501b，其中底面501b係相對於光出射口 501a。且背板501具有至少一個支撐件501c凸設於底面501b 上，用來支撐光學膜片505,使光學膜片505與底面501b之 間保持有一段距離。支撐件501c係在進行背板501沖壓成型 時，同時一體成型地形成於背板501上。 〇 光源509位於光出射口 501a與底面501b之間，較佳係 由複數條燈管排列而成。在本發明的其他實施例中，光源509 也可以是，固設於背板501之底面501b上的發光二極體 (Light Emitting Diode ; LED) 〇 反射板503係設置於底面501b與光源509之間的一種 光學板材，具有相對於光出射口 501a的反光表面503a，反 射板503可以將光源509投射至反光表面503a之光線反射再 利用。但在本發明的較佳實施例之中，反射板503係與背板 9 200842448 :01連成-體，例如，反射板的反光表面5〇3a直接形成於背 板501之底面5〇lb上。 、光予膜片505位於支撐件5〇lc與光出射口 5〇la之間， 然後再將液晶顯示面板52〇置於其上。光學膜片5()5係依據 不同光：目的而设置’用來將光源5〇9所出射的光線形成均 勻的面光源。在本發明的實施例之中，光學膜片奶係選自 於擴散板、擴散片、稜鏡片、導光板以及上述任意組合所組 成之一族群。 在本發明的較佳實施例之中，光學膜片505係藉由與支 撐件501c接觸來與背板5〇1的底面5〇lb之間保持有一段距 離。但在其他實施例中，支撐件5〇1(：與光學膜片5〇5相距有 一段距離，兩者並不接觸，只有當光學膜片505受熱彎曲時 才會與支撐件501c接觸，用來防止光學膜片5〇5產生翹曲變 形。由於背板501以及支撐件501(：是一體沖壓成形，所以並 不需要額外的組裝手續或固定裝置，即可將支撐件5〇lc固設 於为板501之上，因此可以簡化人員組裝的程序，且並不會 增加製程以及價格，而且可以提高結構的強度。 請參照第6圖，第6圖係根據本發明的第二較佳實施例 所繪示之一種液晶顯示器60的結構剖面圖。第6圖的結構 大致與第5圖之結構相似，最大的差異在於支撐件的形狀有 所不同。 在本實施例之中，液晶顯示器60包含液晶顯示面板62〇 和鄰設於液晶顯示面板620的背光模組600。其中，背光模 組600包括背板6〇1、反射板603、光學膜片605以及光源 200842448 609 ° 背板601係一背光模組的殼體結構，具有一個光出射口 601a以及底面601b，其中底面601b係相對於光出射口 601a。且背板601具有至少一個支撐件601c凸設於底面601b W 上，用來支撐光學膜片605，使光學膜片605與底面601b之 - 間保持有一段距離。支撐件601c係在進行背板601沖壓成型 時，同時一體成型地形成於背板601上。 光源609位於光出射口 601a與底面601b之間，較佳係 (、 由複數條燈管排列而成。在本發明的其他實施例中，光源609 也可以是，固設於背板601之底面601b上的發光二極體 (Light Emitting Diode ; LED) 〇 反射板603係設置於底面601b與光源609之間的一種 光學板材，具有相對於光出射口 601a的反光表面603a，反 射板603可以將光源609投射至反光表面603a之光線反射再 利用。在本發明的較佳實施例之中，反射板603係與背板601 連成一體，例如，反射板的反光表面603a直接形成於背板 1/ 601之底面601b上。 光學膜片605位於支撐件601c與光出射口 601a之間， 然後再將液晶顯示面板620置於其上。光學膜片605係依據 不同光學目的而設置，用來將光源609所出射的光線形成均 勻的面光源。在本發明的實施例之中，光學膜片605係選自 於擴散板、擴散片、稜鏡片、導光板以及上述任意組合所組 成之一族群。 在本發明的較佳實施例之中，光學膜片605係藉由與支 11 200842448 姜牛01c接觸來與背板6〇1的底面6〇lb之間保持有一段距 離。/旦在其他實施财，支撐件6Gle與光學料6()5相距有 奴距離，兩者並不接觸，只有當光學膜片005受熱彎曲時 才3與支撐件601c接觸，用來防止光學膜片6〇5產生翹曲變 形。 在本實施例之中，支撐件601c還具有至少一個凸出部 611凸出於支撐件601c表面。凸出部611和支撐件6〇ic之 間可形成一夾制空間用來夾制並固定光源6〇9，另外凸出部 611的頂端也可以設計與支撐件6〇lc的頂端平行，可用來支 撐光學膜片605。 由於背板601以及支撐件601c是一體沖壓成形，所以並 不需要額外的組裝手續或固定裝置，即可將支撐件6〇lc固設 於背板601之上，因此可以簡化人員組裝的程序，且並不會 增加製程以及價格，而且可以提高結構的強度。 $月參照弟7圖，第7圖係根據本發明的第三較佳實施例 所繪示之一種液晶顯示器70的結構剖面圖。第7圖的結構 大致與弟5圖之結構相似，最大的差異在於，第7圖的結構 中包含有其他種類的支撐件。 在本實施例之中，液晶顯示器70包含液晶顯示面板72〇 和鄰設於液晶顯示面板720的背光模組700。其中，背光模 組700包括背板701、反射板703、光學膜片7〇5、光源7〇9 以及第二支撐件707。 背板701係一背光模組的殼體結構，具有一個光出射口 701a以及底面701b，其中底面701b係相對於光出射口 12 200842448 701a。且背板701具有至少一個第一支撐件701c凸設於底面 701b上，用來支撐光學膜片705,使光學膜片705與底面701b 之間保持有一段距離。第一支撐件701c係在進行背板701沖 壓成型時，同時一體成形地形成於背板701上。 光源709位於光出射口 701a與底面701b之間，較佳係 ‘ 由複數條燈管排列而成。在本發明的其他實施例中，光源709 也可以是固設於背板701之底面701b上的發光二極體（Light Emitting Diode ; LED) 〇 反射板703係設置於底面701b與光源709之間的一種 光學板材，具有相對於光出射口 701a的反光表面703a，反 射板703可以將光源709投射至反光表面703a之光線反射再 利用。在本發明的較佳實施例之中，反射板703係與背板701 連成一體，例如，反射板的反光表面703a直接形成於背板 701之底面701b上。 光學膜片705位於第一支撐件701c與光出射口 701a之 間，然後再將液晶顯示面板720置於其上。光學膜片705係 〇 依據不同光學目的而設置，用來將光源709所出射的光線形 成均勻的面光源。在本發明的實施例之中，光學膜片705係 選自於擴散板、擴散片、稜鏡片、導光板以及上述任意組合 所組成之一族群。 在本發明的較佳實施例之中，光學膜片705係藉由與第 一支撐件701c接觸來與背板701的底面701b之間保持有一 段距離。但在其他實施例中，第一支撐件701c與光學膜片 705相距有一段距離，兩者並不接觸，只有當光學膜片705 13 200842448 受熱彎曲時才會與支撐件701c接觸，用來防止光學膜片705 產生赵曲變形。 由於背板701以及支撐件701c是一體沖壓成形，所以並 不需要額外的組裝手續或固定裝置，即可將支撐件701c固設 > 於背板701之上，因此可以簡化人員組裝的程序，且並不會 - 增加製程以及價格，而且可以提高結構的強度。 另外底面701b具有至少一個鎖固孔702。在每一個鎖固 孔702的内緣都分別具有螺旋狀凸緣704。在本發明的較佳 實施例之中，鎖固孔702係貫穿背板701，但在其他實施例 之中，鎖固孔702不需要貫穿背板701。 第二支撐件707位於光學膜片705與反射板703之間， 具有承載部707a、螺鎖部707b，且較佳係由一高反射性材 質，例如聚碳酸酯（Polycarbonate，PC)所構成。在本發明的 較佳實施例之中，承載部707a和螺鎖部707b係位於支撐件 707的前後兩端，而且承載部707a和螺鎖部707b的尺寸較 支撐件707中段之尺寸小，因此使圓形的支撐件707形成一 ί ; 種類紡錘狀結構。螺鎖部707b具有由螺旋狀凸緣的所形成 的螺紋結構706，且螺紋結構706係和每一個鎖固孔702的 螺旋狀凸緣704相匹配，藉以將複數個支撐件707螺鎖於背 板701之上。承載部707a則相對於螺鎖部707b，而遠離背 板701的底面701b，係用來支撐光學膜片705，藉以使光學 膜片705與背板701的底面701b之間保持有一段距離。 在本發明的較佳實施例之中，第二支撐件707由底面 701b算起的的高度，和第一支撐件701c由底面701b突出的 14 200842448 高度相同。兩者皆係直接抵接於光學膜片705之上。但在其 他實施例中，第二支撐件707與光學膜片705相距有一段距 離，兩者並不接觸，只有當光學膜片705受熱彎曲時才會與 支撐件707接觸，用來防止光學膜片705產生翹曲變形。 ’由於在背板底面701b設置複數個鎖固孔702,可以根據 - 實際產品組裝後光學膜片的情況，決定是否組裝第二支撐件 707。由於第二支撐件707和反射板703、光學膜片、705光 源709 —樣，皆係由背板701的光出射口 701a進行組裝，並 且僅須以螺紋鎖固。因此組裝工續較為單純方便，且可以有 較佳的固定效果。 請參照第8圖，第8圖係根據本發明的第四較佳實施例 所繪示之一種液晶顯示器80的結構剖面圖。第8圖的結構 大致與第7圖之結構相似，最大的差異在於第二支撐件的形 狀有所不同。 在本實施例之中，液晶顯示器80包含液晶顯示面板820 和鄰設於液晶顯示面板820的背光模組800。其中，背光模 組800包括背板801、反射板803、光學膜片、805光源809 以及第二支撐件807。 背板801係一背光模組的殼體結構，具有一個光出射口 801a以及底面801b，其中底面801b係相對於光出射口 801a。且背板801具有至少一個第一支撐件801c凸設於底面 801b上，用來支撐光學膜片805,使光學膜片805與底面801b 之間保持有一段距離。第一支撐件801c係在進行背板801沖 壓成型時，同時一體成形地形成於背板801上。 15 200842448 光源809位於光出射口 801a與底面801b之間，較佳係 由複數條燈管排列而成。在本發明的其他實施例中，光源809 也可以是固設於背板801之底面801b上的發光二極體（Light Emitting Diode ; LED) 〇 < 反射板803係設置於底面801b與光源809之間的一種 - 光學板材，具有相對於光出射口 801a的反光表面803a，反 射板803可以將光源809投射至反光表面803a之光線反射再 利用。在本發明的較佳實施例之中，反射板803係與背板801 Γ 連成一體，例如，反射板的反光表面803a直接形成於背板 801之底面801b上。 光學膜片805位於第一支撐件801c與光出射口 801a之 間，然後再將液晶顯示面板820置於其上。光學膜片805係 依據不同光學目的而設置，用來將光源809所出射的光線形 成均勻的面光源。在本發明的實施例之中，光學膜片705係 選自於擴散板、擴散片、稜鏡片、導光板以及上述任意組合 所組成之一族群。 (J 在本發明的較佳實施例之中，光學膜片805係藉由與第 一支撐件801c接觸來與背板801的底面801b之間保持有一 段距離。但在其他實施例中，第一支撐件801c與光學膜片 805相距有一段距離，兩者並不接觸，只有當光學膜片805 受熱彎曲時才會與支撐件801c接觸，用來防止光學膜片805 產生翹曲變形。 由於背板801以及支撐件801c是一體沖壓成形，所以並 不需要額外的組裝手續或固定裝置，即可將支撐件801c固設 16 200842448 於背板801之上，因此可以簡化人員組裝的程序，且並不會 增加製程以及價格，而且可以提高結構的強度。 另外底面801b具有至少一個鎖固孔802。在每一個鎖固 孔802的内緣都分別具有螺旋狀凸緣804。在本發明的較佳 ‘實施例之中，鎖固孔802係貫穿背板801，但在其他實施例 * 之中，鎖固孔802不需要貫穿背板801。 第二支撐件807位於光學膜片805與反射板803之間， 具有承載部807a、螺鎖部807b，且較佳係由一高反射性材 質，例如聚碳酸酯（Polycarbonate，PC)所構成。在本發明的 較佳實施例之中，承載部807a和螺鎖部807b係位於支撐件 807的前後兩端，而且承載部807a和螺鎖部807b的尺寸較 支撐件807中段之尺寸小，因此使圓形的支撐件807形成一 種類紡錘狀結構。螺鎖部807b具有由螺旋狀凸緣的所形成 的螺紋結構806，且螺紋結構706係和每一個鎖固孔802的 螺旋狀凸緣804相匹配，藉以將複數個支撐件807螺鎖於背 板801之上。承載部807a則相對於螺鎖部807b，而遠離背 Ο 板801的底面801b，係用來支撐光學膜片805，藉以使光學 膜片805與背板801的底面801b之間保持有一段距離。 在本發明的較佳實施例之中，第二支撐件807由底面 801b算起的的高度，和第一支撐件801c由底面801b突出的 高度相同。兩者皆係直接抵接於光學膜片805之上。但在其 他實施例中，第二支撐件807與光學膜片805相距有一段距 離，兩者並不接觸，只有當光學膜片805受熱彎曲時才會與 支撐件807接觸，用來防止光學膜片805產生翹曲變形。 17 200842448 另外，在本實施例之中，第二支撐件807還具有至少一 個凸出部807c凸出於第二支撐件807表面。凸出部807c和 第二支撐件807之間可形成一夾制空間用來夾制並固定光源 809，另外凸出部807c的頂端也可以設計與第二支撐件807 ^ 的頂端平行，可用來支撐光學膜片805。 • 由於在背板底面801b設置複數個鎖固孔802,可以根據 實際產品組裝後光學膜片的情況，決定是否組裝第二支撐件 807。由於第二支撐件807和反射板803、光學膜片805、光 源809 —樣，皆係由背板801的光出射口 801a進行組裝，並 且僅須以螺紋鎖固。因此組裝工續較為單純方便，且可以有 較佳的固定效果。 根據上述本發明較佳實施例，本發明的技術特徵係在於 使用一種與背板一體成型的支撐件來取代習知的承載座或 支撐件。採用具有上述支撐件的背板來組立背光模組，可收 到結構簡單、組裝方便且抗衝擊防止支撐件脫落位移等優 點，可藉以解決結構複雜與組裝不易的問題。 U 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，任何相關技術領域具有通常知識者，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。 【圖式簡單說明】 為讓本發明之上述和其他目的、特徵、優點與實施例能 更明顯易懂，所附圖式之詳細說明如下： 18 200842448 f 1圖係種傳統支撐件1G1的結構示意圖。 f 2圖係纷不另一種傳統支撐件201的結構示意圖。 ^ 3圖係紛不又一種傳統支撐件301的結構示意圖。 • : 4圖係繪不再-種傳統支撐件401的結構示意圖。 • \5圖係根據本發明的第-較佳實施例所緣示之-種液 日日顯不器50的結構剖面圖。 曰as :圖係根據本發明的第二較佳實施例所繪示之-種液 日日顯不器60的結構剖面圖。 第7圖係根據本發明的第三較佳實施例所繚示之一種液 日日顯示器70的結構剖面圖。 第8圖係根據本發明的第四較佳實施例所繪示之一種液 晶顯示器80的結構剖面圖。 必須強凋的是’為了清楚地說明起見，附圖均未按照比 ^尺、《圖’不同的附圖都有可能被任意地擴大或縮小。 1〇1 :支撐件 104 :支撐單元 101b :支撐件下表面 200 :背板 202 :燈管固定單元 201b :支撐件下表面 204b :固定柱 【主要元件符號說明 ϋ 1〇〇:背板 ϊ〇2:燈管固定單元 101a :支撐件上表面 . 1〇5 :黏膠 2〇1 :支撐件 201a :支撐件上表面 支撐單元：2〇；3 2〇4a :固定桎 19 200842448200842448 IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module and an application thereof, and more particularly to a backplane suitable for a backlight module and an application thereof. ~ [Prior Art] Backlight modules are generally used to provide optical components for surface light sources. They are currently used in liquid crystal displays (Liquid €) on various information, communication, and consumer products. Generally speaking, the backlight module is mainly composed of three parts: a back plate, an optical film and a light source. Generally, it can be divided into two types: side light type and direct type according to different structures. Currently, large size liquid crystal displays mostly use direct type backlight modules. Taking a direct type backlight module as an example, a cold cathode lamp (CCFL), a hot cathode tube (HCFL), a light emitting diode (LED), or the like is generally used as a light source. However, as the size of the display increases, the light source and the optical film located inside the backlight module are prone to heat generated by the lamp tube, and the influence of gravity causes the rigidity of the optical film to be insufficient to cause warping deformation. This affects the display quality of the display. In order to solve this problem, the prior art employs a plurality of support members disposed on the back plate to fix the lamp tube and support the optical film to prevent warpage of the lamp tube and the optical thin film. For example, please refer to Fig. 1, which is a schematic view showing the structure of a conventional support member 101. The support member 101 includes a plurality of lamp fixing units 102 for clamping and fixing the lamp tubes, and a supporting unit 104 for supporting the optical film, which is protruded from the upper surface 10a of the supporting member 101. The support member 101 is adhered to the back plate 100 of the back light module of the 200842448 by the adhesive 105 located on the lower surface 10b. However, the adhesive 105 is liable to undergo physicochemical changes due to heat, such as softening or embrittlement, and is ineffective, and is easily detached by an external force during or during processing. Please refer to FIG. 2 again. FIG. 2 is a schematic structural view of another conventional support member 201~. The support member 201 includes a plurality of lamp fixing units 202 protruding from the upper surface 211 of the support member 201 for clamping and fixing the lamp tube, and a supporting unit 203 supporting the optical film. The lower surface 201b of the support member 201 is convexly provided with at least two fixing posts 204a and 204b. The fixing posts 204a and 204b are passed through the two arcuate narrow holes 205a and 205b on the backing plate 200 of the backlight module. The relative positions of the fixing posts 204a and 204b between the two narrow holes are adjusted by engaging the support member 201 on the back plate 200. However, the support member 201 is movably fixed in the arcuate narrow holes 205a and 205b by the fixing posts 204a and 204b, and the impact is easily loosened. The fixing posts 204a and 204b are mostly plasticized materials and are easily heated. And shattered and broken. In addition, please refer to FIG. 3, which is a schematic structural view of still another conventional support member G 301. The support member 301 includes a plurality of lamp fixing units 302 for clamping and fixing the lamp tubes, and a supporting unit 304 for supporting the optical film, which is protruded from the upper surface 301a of the supporting member 301. The support member 301 is embedded with the through holes 306a and 306b fixed to the back plate 300 of the backlight module by the fixing hooks 305a and 305b on the lower surface 301b. However, the fixing hook is not easy to assemble, and is fixed by the fixing hook. Between the supporting member 301 and the backing plate, it is easy to generate noise due to insufficient adhesion. Please refer to FIG. 4 again. FIG. 4 is a schematic structural view of still another conventional support member 401 6 200842448. The support member 401 includes a support post 404 of a branch optical film 407 disposed on the upper surface 4〇〇a of the back plate 4 of the backlight module, and is supported by a locking component 405, such as a screw. The lower surface 400b of the backing plate 4b is inserted into the backing plate 400 and the support post 404, and the support post 404 is screwed onto the upper surface 400a of the backing plate 400. However, the use of the locking component not only increases the assembly process of the backlight module, but also increases the material cost. Therefore, there is a need to provide a backlight module back plate having an optical film support member which is simple in construction and easy to assemble, and can prevent the support member from falling off from the back plate due to an external force impact. SUMMARY OF THE INVENTION An object of the present invention is to provide a back panel suitable for a backlight module, the back panel including a bottom surface having at least one first support member-shapedly protruding on the bottom surface, these The support member is used to support the optical film of the backlight module. As described above, the backboard of the present invention further includes at least one locking hole, and at least - the second supporting member 'each of the second supporting members has a threaded structure and a spiral flange of the locking holes 'The second support member is fixed to the bottom surface. The first and second support members may further have a protrusion protruding from a surface of the second support member to form a clamping space for clamping and fixing a light source. Another object of the present invention is to provide a backlight module including a back panel, a light source, and an optical film. The moon plate has a light exit opening and a bottom surface opposite to the light exit opening, and the bottom surface has at least n material, which is formed to protrude from the bottom surface. Light. The source is located between the bottom surface and the light exit. The S-small diaphragm is located between the support member and the light exit port, and the support member is used to support the optical film. A further object of the present invention is to provide a liquid crystal display comprising: a liquid crystal display panel and a backlight module, the light is disposed adjacent to the liquid crystal display panel, and the backlight module further comprises: a back: a light source: 1 ' And optical film. The back plate has a light exit opening and a bottom surface opposite to the light exiting cymbal, and the bottom surface has a to-four-first-supporting member that is integrally formed on the bottom surface. The optical diaphragm is located between the support member and the light exit opening, and the support member is for supporting the optical diaphragm. According to the preferred embodiment described above, the technical feature of the present invention is to support the backlight module (4) optical film and the lamp tube on the back plate of the backlight module by using a support member formed by the back plate. The towel support member adopts the (four) pressure or the mold to make the branching bud member protrude directly from the moon plate, and has the advantages of simple structure, convenient assembly, and difficulty of falling or displacement due to external force impact, so as to solve the above-mentioned conventional technology. The object of the present invention is to provide a backlight module back plate which is simple in structure, convenient in assembly, and easy to fall or displace by external force, so that the characteristics, advantages, production methods and usage modes of the present invention can be more obvious. Easy to understand, 8 200842448 The following description will be made with a direct type backlight module suitable for liquid crystal displays. It is to be understood that the embodiments are not intended to limit the scope of the invention. Among other embodiments of the present invention, the backsheet provided by the present invention is also applicable to other forms of backlight modules. Referring to Figure 5, a fifth embodiment is a cross-sectional view showing a structure of a liquid crystal display device 50 according to a first preferred embodiment of the present invention. In the present embodiment, the liquid crystal display 50 includes a liquid crystal display panel 520 and a backlight module 500 disposed adjacent to the liquid crystal display panel 520. The backlight module 500 includes a back plate 501, a reflective plate 503, an optical film 505, and a light source 509. The back plate 501 is a housing structure of a backlight module having a light exit opening 501a and a bottom surface 501b, wherein the bottom surface 501b is opposite to the light exit opening 501a. The back plate 501 has at least one support member 501c protruding from the bottom surface 501b for supporting the optical film 505 to maintain a distance between the optical film 505 and the bottom surface 501b. The support member 501c is integrally formed on the back plate 501 at the same time as the back plate 501 is press-formed.光源 The light source 509 is located between the light exit opening 501a and the bottom surface 501b, and is preferably formed by arranging a plurality of light tubes. In other embodiments of the present invention, the light source 509 may be disposed on the bottom surface 501b of the back plate 501. The light emitting diode (LED) 〇 reflection plate 503 is disposed on the bottom surface 501b and the light source 509. An optical plate has an opposite surface 503a with respect to the light exit opening 501a, and the reflecting plate 503 can reflect and reuse the light projected from the light source 509 to the reflective surface 503a. However, in the preferred embodiment of the present invention, the reflecting plate 503 is connected to the back plate 9 200842448 : 01. For example, the reflective surface 5 〇 3a of the reflecting plate is directly formed on the bottom surface 5 lb of the back plate 501. . The photo-adhesive film 505 is located between the support member 5〇lc and the light exit port 5〇1a, and then the liquid crystal display panel 52 is placed thereon. The optical film 5() 5 is provided for the purpose of different light: purpose for forming a uniform surface light source for the light emitted from the light source 5〇9. In an embodiment of the invention, the optical film milk is selected from the group consisting of a diffuser plate, a diffuser sheet, a gusset sheet, a light guide plate, and any combination of the above. In a preferred embodiment of the invention, the optical film 505 is maintained at a distance from the bottom surface 5〇1 of the backing plate 5〇1 by contact with the support member 501c. However, in other embodiments, the support member 5〇1 (the distance from the optical film 5〇5 is a distance, the two are not in contact, and only when the optical film 505 is bent by heat, it is in contact with the support member 501c, To prevent warpage deformation of the optical film 5〇5. Since the back plate 501 and the support member 501 (: are integrally formed by stamping, the support member 5〇lc can be fixed without additional assembly procedures or fixing means. It is above the board 501, so the procedure of personnel assembly can be simplified, and the process and the price are not increased, and the strength of the structure can be improved. Please refer to FIG. 6 and FIG. 6 is a second preferred embodiment according to the present invention. A structural sectional view of a liquid crystal display 60 is shown in the example. The structure of Fig. 6 is substantially similar to the structure of Fig. 5, and the biggest difference is that the shape of the support member is different. In the present embodiment, the liquid crystal display 60 The backlight module 600 includes a liquid crystal display panel 62 and a backlight module 600 disposed adjacent to the liquid crystal display panel 620. The backlight module 600 includes a back panel 6〇1, a reflector 603, an optical diaphragm 605, and a light source 200842448 609 ° One The housing structure of the backlight module has a light exit opening 601a and a bottom surface 601b, wherein the bottom surface 601b is opposite to the light exit opening 601a, and the back plate 601 has at least one support member 601c protruding from the bottom surface 601b W for supporting The optical film 605 maintains a distance between the optical film 605 and the bottom surface 601b. The support member 601c is integrally formed on the back plate 601 while being formed into the back plate 601. The light source 609 is located at the light exiting. Between the port 601a and the bottom surface 601b, it is preferably arranged by a plurality of lamps. In other embodiments of the present invention, the light source 609 may also be a light-emitting device fixed on the bottom surface 601b of the back plate 601. The Light Emitting Diode (LED) 〇 reflection plate 603 is an optical plate disposed between the bottom surface 601b and the light source 609, and has a reflective surface 603a with respect to the light exit opening 601a. The reflective plate 603 can project the light source 609 to the reflective light. The light of the surface 603a is reflected and reused. In the preferred embodiment of the present invention, the reflecting plate 603 is integrally connected with the back plate 601. For example, the reflective surface 603a of the reflecting plate is directly formed on the back plate 1/60. The bottom surface 601b of the optical film 605 is located between the support member 601c and the light exit opening 601a, and then the liquid crystal display panel 620 is placed thereon. The optical film 605 is provided for different optical purposes for the light source The light emitted by 609 forms a uniform surface light source. In an embodiment of the invention, optical film 605 is selected from the group consisting of a diffuser plate, a diffuser plate, a cymbal sheet, a light guide plate, and any combination thereof. In a preferred embodiment of the invention, the optical film 605 is held at a distance from the bottom surface 6〇1 of the backing plate 6〇1 by contact with the support 11 200842448. / In other implementations, the support member 6Gle and the optical material 6 () 5 are separated from each other, the two are not in contact, only when the optical film 005 is bent by heat, 3 is in contact with the support member 601c to prevent the optical film The sheet 6〇5 produces warpage deformation. In the present embodiment, the support member 601c further has at least one projection 611 projecting from the surface of the support member 601c. A clamping space can be formed between the protruding portion 611 and the supporting member 6〇ic for clamping and fixing the light source 6〇9, and the top end of the protruding portion 611 can also be designed to be parallel with the top end of the supporting member 6〇lc. To support the optical film 605. Since the back plate 601 and the support member 601c are integrally formed by stamping, the support member 6〇lc can be fixed on the back plate 601 without requiring additional assembly procedures or fixing devices, thereby simplifying the procedure for assembling personnel. It does not increase the process and price, but also increases the strength of the structure. Fig. 7 is a cross-sectional view showing the structure of a liquid crystal display 70 according to a third preferred embodiment of the present invention. The structure of Fig. 7 is roughly similar to the structure of Fig. 5, the biggest difference being that the structure of Fig. 7 contains other kinds of supports. In the present embodiment, the liquid crystal display 70 includes a liquid crystal display panel 72A and a backlight module 700 disposed adjacent to the liquid crystal display panel 720. The backlight module 700 includes a back plate 701, a reflection plate 703, an optical film 7〇5, a light source 7〇9, and a second support member 707. The backplane 701 is a housing structure of a backlight module having a light exit opening 701a and a bottom surface 701b, wherein the bottom surface 701b is opposite to the light exit opening 12 200842448 701a. The back plate 701 has at least one first support member 701c protruding from the bottom surface 701b for supporting the optical film 705 to maintain a distance between the optical film 705 and the bottom surface 701b. The first support member 701c is integrally formed on the back plate 701 at the same time as the back plate 701 is press-formed. The light source 709 is located between the light exit opening 701a and the bottom surface 701b, and is preferably arranged by a plurality of light tubes. In other embodiments of the present invention, the light source 709 may also be a light emitting diode (LED) fixed on the bottom surface 701b of the back plate 701. The reflective plate 703 is disposed between the bottom surface 701b and the light source 709. An optical plate having a reflective surface 703a with respect to the light exit opening 701a, the reflective plate 703 can reflect and reuse the light projected by the light source 709 onto the reflective surface 703a. In the preferred embodiment of the present invention, the reflecting plate 703 is integrally formed with the back plate 701. For example, the reflecting surface 703a of the reflecting plate is directly formed on the bottom surface 701b of the back plate 701. The optical film 705 is positioned between the first support member 701c and the light exit opening 701a, and then the liquid crystal display panel 720 is placed thereon. The optical film 705 is arranged for different optical purposes to form the light emitted by the light source 709 into a uniform surface light source. In an embodiment of the invention, the optical film 705 is selected from the group consisting of a diffuser plate, a diffuser sheet, a gusset sheet, a light guide plate, and any combination thereof. In the preferred embodiment of the invention, the optical film 705 is maintained at a distance from the bottom surface 701b of the backing plate 701 by contact with the first support member 701c. However, in other embodiments, the first support member 701c is spaced apart from the optical film 705 by a distance, and the two are not in contact with each other. Only when the optical film 705 13 200842448 is bent by heat, it is in contact with the support member 701c for preventing The optical film 705 produces a distortion of the curvature. Since the back plate 701 and the support member 701c are integrally formed by stamping, the support member 701c can be fixed on the back plate 701 without requiring an additional assembly procedure or fixing device, thereby simplifying the procedure for assembling personnel. And it doesn't - increase process and price, and increase the strength of the structure. In addition, the bottom surface 701b has at least one locking hole 702. A spiral flange 704 is provided at the inner edge of each of the locking holes 702, respectively. In the preferred embodiment of the invention, the locking holes 702 extend through the backing plate 701, but in other embodiments, the locking holes 702 need not extend through the backing plate 701. The second support member 707 is located between the optical film 705 and the reflection plate 703, and has a bearing portion 707a and a screw-lock portion 707b, and is preferably made of a highly reflective material such as polycarbonate (PC). In the preferred embodiment of the present invention, the bearing portion 707a and the screw locking portion 707b are located at the front and rear ends of the support member 707, and the size of the carrying portion 707a and the screw locking portion 707b is smaller than the size of the middle portion of the support member 707, so The circular support member 707 is formed into a variety of spindle-like structures. The screw lock portion 707b has a threaded structure 706 formed by a helical flange, and the threaded structure 706 is mated with the helical flange 704 of each of the locking holes 702, thereby locking the plurality of support members 707 to the back. Above the board 701. The bearing portion 707a is opposite to the screw portion 707b and away from the bottom surface 701b of the back plate 701 for supporting the optical film 705, thereby maintaining a distance between the optical film 705 and the bottom surface 701b of the back plate 701. In the preferred embodiment of the present invention, the height of the second support member 707 from the bottom surface 701b is the same as the height of the 14200842448 in which the first support member 701c protrudes from the bottom surface 701b. Both of them directly abut on the optical film 705. However, in other embodiments, the second support member 707 is spaced apart from the optical film 705 by a distance, and the two are not in contact with each other. Only when the optical film 705 is bent by heat, it is in contact with the support member 707 for preventing the optical film. Sheet 705 produces warp deformation. Since a plurality of locking holes 702 are provided in the bottom surface 701b of the backing plate, it is possible to determine whether or not to assemble the second supporting member 707 according to the condition of the optical film after the actual product is assembled. Since the second support member 707 is the same as the reflection plate 703, the optical film, and the 705 light source 709, it is assembled by the light exit opening 701a of the back plate 701, and only needs to be screwed. Therefore, the assembly process is relatively simple and convenient, and can have a better fixing effect. Referring to FIG. 8, FIG. 8 is a cross-sectional view showing the structure of a liquid crystal display device 80 according to a fourth preferred embodiment of the present invention. The structure of Fig. 8 is roughly similar to the structure of Fig. 7, the biggest difference being that the shape of the second support member is different. In the embodiment, the liquid crystal display 80 includes a liquid crystal display panel 820 and a backlight module 800 disposed adjacent to the liquid crystal display panel 820. The backlight module 800 includes a back plate 801, a reflection plate 803, an optical film, an 805 light source 809, and a second support member 807. The back plate 801 is a housing structure of a backlight module having a light exit opening 801a and a bottom surface 801b, wherein the bottom surface 801b is opposite to the light exit opening 801a. The back plate 801 has at least one first support member 801c protruding from the bottom surface 801b for supporting the optical film 805 to maintain a distance between the optical film 805 and the bottom surface 801b. The first support member 801c is integrally formed on the back plate 801 at the same time as the back plate 801 is press-formed. 15 200842448 The light source 809 is located between the light exit opening 801a and the bottom surface 801b, and is preferably arranged by a plurality of light tubes. In other embodiments of the present invention, the light source 809 may be a light emitting diode (LED) fixed on the bottom surface 801b of the back plate 801. The reflective plate 803 is disposed on the bottom surface 801b and the light source 809. There is a type - an optical plate having a reflective surface 803a with respect to the light exit opening 801a, and the reflecting plate 803 can reflect the light projected from the light source 809 onto the reflective surface 803a for reuse. In the preferred embodiment of the present invention, the reflecting plate 803 is integrally connected to the backing plate 801. For example, the reflecting surface 803a of the reflecting plate is directly formed on the bottom surface 801b of the backing plate 801. The optical film 805 is placed between the first support member 801c and the light exit opening 801a, and then the liquid crystal display panel 820 is placed thereon. The optical film 805 is provided for different optical purposes and is used to form the light emitted by the light source 809 into a uniform surface light source. In an embodiment of the invention, the optical film 705 is selected from the group consisting of a diffuser plate, a diffuser sheet, a gusset sheet, a light guide plate, and any combination thereof. (J In a preferred embodiment of the invention, the optical film 805 is maintained at a distance from the bottom surface 801b of the backing plate 801 by contact with the first support member 801c. However, in other embodiments, A support member 801c is spaced apart from the optical film 805 by a distance therebetween, and the two are not in contact with each other, and only when the optical film 805 is bent by heat, it is in contact with the support member 801c for preventing warpage deformation of the optical film 805. The back plate 801 and the support member 801c are integrally formed by stamping, so that the support member 801c can be fixed on the back plate 801 without additional assembly procedures or fixing devices, thereby simplifying the procedure for assembling personnel. The process and price are not increased, and the strength of the structure can be increased. Further, the bottom surface 801b has at least one locking hole 802. The inner edge of each of the locking holes 802 has a spiral flange 804, respectively. In the embodiment, the locking hole 802 is penetrated through the back plate 801, but in other embodiments*, the locking hole 802 does not need to penetrate through the back plate 801. The second supporting member 807 is located at the optical film 805 and reflected Between 803, there is a bearing portion 807a and a screw-locking portion 807b, and is preferably made of a highly reflective material such as polycarbonate (PC). In a preferred embodiment of the present invention, the bearing portion The 807a and the screw lock portion 807b are located at the front and rear ends of the support member 807, and the size of the bearing portion 807a and the screw lock portion 807b is smaller than the size of the middle portion of the support member 807, so that the circular support member 807 forms a spindle-like structure. The screw lock portion 807b has a threaded structure 806 formed by a helical flange, and the threaded structure 706 is matched with the helical flange 804 of each of the locking holes 802, thereby locking the plurality of support members 807 to Above the backing plate 801. The bearing portion 807a is opposite to the screw locking portion 807b, and away from the bottom surface 801b of the backing plate 801 for supporting the optical film 805, so that the optical film 805 and the bottom surface 801b of the backing plate 801 are In the preferred embodiment of the present invention, the height of the second support member 807 from the bottom surface 801b is the same as the height at which the first support member 801c protrudes from the bottom surface 801b. Both are directly Relying on the optical film 805 However, in other embodiments, the second support member 807 is spaced apart from the optical film 805 by a distance, and the two are not in contact with each other. Only when the optical film 805 is bent by heat, it is in contact with the support member 807 for preventing optics. The diaphragm 805 generates a warp deformation. 17 200842448 In addition, in the embodiment, the second support member 807 further has at least one protrusion 807c protruding from the surface of the second support member 807. The protrusion 807c and the second support A clamping space may be formed between the members 807 for clamping and fixing the light source 809, and the top end of the protruding portion 807c may also be designed to be parallel to the top end of the second supporting member 807^ for supporting the optical film 805. • Since a plurality of locking holes 802 are provided in the bottom surface 801b of the backing plate, it is possible to determine whether or not to assemble the second supporting member 807 according to the condition of the optical film after the actual product is assembled. Since the second support member 807 is the same as the reflection plate 803, the optical film 805, and the light source 809, it is assembled by the light exit opening 801a of the back plate 801, and only needs to be screwed. Therefore, the assembly process is relatively simple and convenient, and can have a better fixing effect. In accordance with the preferred embodiment of the invention described above, the technical feature of the present invention resides in the use of a support member integrally formed with the backing plate in place of the conventional carrier or support member. The backlight module with the above-mentioned support member can be used to form the backlight module, which can obtain the advantages of simple structure, convenient assembly, and anti-impact to prevent the support member from falling off and the like, thereby solving the problems of complicated structure and difficult assembly. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and it is to be understood by those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the scope of protection of this invention is subject to the definition of the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS In order to make the above and other objects, features, advantages and embodiments of the present invention more obvious, the detailed description of the drawings is as follows: 18 200842448 f 1 The structure of the conventional support 1G1 schematic diagram. The f 2 diagram is a schematic view of the structure of another conventional support member 201. ^ 3 is a schematic diagram of the structure of a conventional support member 301. • : 4 Figure drawing is no longer a structural diagram of a conventional support member 401. • Fig. 5 is a cross-sectional view showing the structure of the seed liquid day and day display device 50 according to the first preferred embodiment of the present invention.曰as: A cross-sectional view showing the structure of the seed liquid day and day display 60 according to the second preferred embodiment of the present invention. Figure 7 is a cross-sectional view showing the structure of a liquid day display 70 according to a third preferred embodiment of the present invention. Figure 8 is a cross-sectional view showing the structure of a liquid crystal display 80 according to a fourth preferred embodiment of the present invention. It must be forcible that 'for the sake of clarity, the drawings are not arbitrarily enlarged or reduced according to the drawings which are different from the figure and the figure. 1〇1: support member 104: support unit 101b: support member lower surface 200: back plate 202: lamp tube fixing unit 201b: support member lower surface 204b: fixed column [main component symbol description ϋ 1〇〇: back plate ϊ〇 2: Lamp fixing unit 101a: upper surface of the support member. 1〇5: adhesive 2〇1: support member 201a: support member upper surface support unit: 2〇; 3 2〇4a: fixed 桎 19 200842448
C Ο 205a ··弧形窄孔 300 ··背板 302 ··燈管固定單元 301b :支撐件下表面 305a :固定鉤 306a :貫穿孔 400 :背板 400a ··背板上表面 404 :支撐柱 407 ··光學膜片 50 :液晶顯示器 500 :背光模組 501a :光出射口 501c :支撐件 503a :反光表面 509 :光源 60 :液晶顯示器 601 :背板 601b :底面 603 :反射板 605 :光學膜片 611 :凸出部 70 :液晶顯示器 701 :背板 205b ··弧形窄孔 301 :支撐件 301a ··支撐件上表面 304 :支撐單元 305b :固定鉤 306b :貫穿孔 401 :支撐件 400b :背板下表面 405 :鎖固元件 501 :背板 501b :底面 503 :反射板 505 :光學膜片 520 ·液晶顯不面板 600 :背光模組 601a :光出射口 601c :支撐件 603a :反光表面 609 :光源 620 :液晶顯示面板 700 ·•背光模組 701a :光出射口 20 200842448 701b :底面 702 :鎖固孔 703a :反光表面 705 :光學膜片 ' 707 :第二支撐件 • 707b :螺鎖部 720 :液晶顯示面板 800 :背光模組 f、 801a :光出射口 801c :第一支撐件 802 :鎖固孔 803a :反光表面 805 :光學膜片 807 :第二支撐件 807b :螺鎖部 809 :光源 701c :第一支撐件 703 :反射板 704 :螺旋狀凸緣 706 ··螺紋結構 707a :承載部 709 :光源 80 :液晶顯示器 801 :背板 801b :底面 8 0 3 ·反射板 804 :螺旋狀凸緣 806 ··螺紋結構 807a :承載部 807c :凸出部 820 ·液晶顯不面板 21C Ο 205a · · Curved narrow hole 300 · · Back plate 302 · · Lamp fixing unit 301b : Support lower surface 305a : Fixed hook 306a : Through hole 400 : Back plate 400a · Back plate surface 404 : Support column 407 ··Optical film 50: Liquid crystal display 500: Backlight module 501a: Light exit port 501c: Support member 503a: Reflective surface 509: Light source 60: Liquid crystal display 601: Back plate 601b: Bottom surface 603: Reflecting plate 605: Optical film Sheet 611: Projection portion 70: Liquid crystal display 701: Back plate 205b · Curved narrow hole 301: Support member 301a · Support member upper surface 304: Support unit 305b: Fixing hook 306b: Through hole 401: Support member 400b: Back plate lower surface 405: Locking element 501: Back plate 501b: Bottom surface 503: Reflecting plate 505: Optical film 520 · Liquid crystal display panel 600: Backlight module 601a: Light exit port 601c: Support member 603a: Reflective surface 609 Light source 620: Liquid crystal display panel 700 • Backlight module 701a: Light exit port 20 200842448 701b: Bottom surface 702: Locking hole 703a: Reflective surface 705: Optical film '707: Second support member 707b: Screw lock portion 720: liquid crystal display panel 800: backlight module f, 80 1a: light exit port 801c: first support member 802: lock hole 803a: reflective surface 805: optical film 807: second support member 807b: screw lock portion 809: light source 701c: first support member 703: reflection plate 704 : spiral flange 706 · thread structure 707a: bearing portion 709: light source 80: liquid crystal display 801: back plate 801b: bottom surface 80 3 · reflection plate 804: spiral flange 806 · thread structure 807a: bearing portion 807c : protruding portion 820 · liquid crystal display panel 21