1322310 九、發明說明： 【發明所屬之技術領域】 本發明係提供一種光源模組，尤指一種應用於液晶顯 示器中可提供均勻背光源之背光模組。 • 【先前技術】 液晶顯示器係由一液晶顯示面板（liquid crystal panel)、一背光模組（backlight unit)所構成，其中該 液晶顯示面板包含一彩色濾光基板（c〇l〇rFilter，C/F)、 一薄膜電晶趙陣列基板（thin film transistor array) φ 以及兩基板之間係由一液晶層所建構。其中該彩色濾光基 板上設有共通電極（commori electrode)，而該薄膜電晶體 陣列基板上設有複數個畫素電極（pixel electr〇de)，藉由 該等複數個畫素電極與該共通電極間之電場大小以控制液 晶分子的轉動’以決定光線的通過量。而背光模組係用以 提供該液晶顯示面板顯示影像時所需之光源。再者，藉由 薄膜電晶體來驅動液晶分子的轉動需要一定的時間，因此 液晶分子在轉動的過程中，該液晶顯示面板可能無法有效 控制通過的光線量，而產生拖影（d〇uble image)的現象， 使得液晶顯示面板的動態影像反應時間（Motion Picture B Response .Time)增長’影響該液晶顯示面板的品質。 為改善上述所提之拖影現象，習知技術提出一掃描式 背光模組（scan back 1 ight unit)，於不同之液晶顯示區塊 的光源以掃描的方式，分別在不同的時間點亮。然而，為 解決不同液晶顯示區塊之間光線相互干擾之現象，習知技 術會於背光模組中設有山型反射片結構，以區隔不同位置 的光源來避免相互干擾。舉例而言，在未設置山型反射片 結構之掃描式背光模組中，例如其中一液晶顯示區塊的光 線應為暗時區時，可能會因為接收到相鄰之液晶顯示區塊 的光線，而導致液晶顯示區塊不夠暗的情形，進而影響動 態影像的顯示。 土 ®明參考第1A〜1B圓係為習知背光模組之局部剖面示 思圖，其t習知技術之背光模組01包含一燈箱1〇、複數 個光源12(在本圖中僅以兩光源來表示）、一山型反射片 結構14以及一擴散板16。其中，該山型反射片結構^立 於該燈箱10之底部，而相鄰兩顯示區塊之間係配置有該山 型反射片結構14,且該山型反射片結構u的表面具有良 好的反射性，以反射及/或入射到其表面的光線而達到 分利用光源之目的。 但是，實務上發現具有該山型反射片結構14之背光模 組會導致形成一非預期產生之亮紋或暗紋（mura)，而影 液晶顯示器之顯示品質。 因此，習知背光模組之技術，具有下列缺失：於背光 模組中設有山型反射片結構’以區隔不同位置的光源來避 免相互干擾，但疋因為該山型反射片結構之設置會非預 期產生亮紋及暗紋，影響該液晶顯示器之品質。 職疋之故，本發明鑒於習知技術之缺失乃思及改良 發明之意念’發明出本案之『液晶顯示器之背光模 【發明内容】 本發明之主要目的係提供一種應用於一液晶顯示器之 背光模組’其中該背光模組包含一反射片結構。該反射片 、-»構可為型反射片结構，包含複數個突起結構以及複 數個平板結構°利用該突起結構之表面反射率與該平板結 構之表面反射率之不同，進而提供較為均句之背光源。 本發月之另目的係提供一種應用於一液晶顯示器之 背光模組’其中該背光模組包含一反射片結構、一燈箱以 及-擴散板。該反射片結構可為一山型反射片結構，包含 ，數個突起結構以及複數個|板結肖。當該反射片結構之 问度小於四分之二之該燈箱底部與該擴散板之間的高度 1322310 ^反it 表面較該平板結構之表面具有較小 即可改善亮紋的現象，進而提供較為均句之=強度， 背央ίΓ明之另-目的係提供-種應用於"'液晶顯示器之 身光模組，其中該背光模組包含一反射片結構一产 及一擴散板。該反射片結構可為一山型反射片結構， 複數個突起結構以及複數個平板結構。當該反射片蛀構之 於或等於四分之三之該燈箱底部與該擴散板之間的 咼度時，該平板結構之表面較該突起結構之表面具有較小 之反射率，因此可以減緩該平板結構之上方的光線強度， 即可改善暗紋的現象，因而可以提供較為均勻之背光源。 本發明之另一目的係提供一種反射片結構，該反射片 結構可為一山型反射片結構，包含複數個突起結構以及複 數個平板結構^該反射片結構更包含一反射率調整圖案’ 該反射率調整圖案係配置於該等複數個突起結構以及該等 複數個平板結構之表面。 本發明之另一目的係提供一種反射率調整圖案，該反 射率調整圖案應用於一種反射片結構，該反射片結構可為 一山型反射片結構，包含複數個突起結構以及複數個平板 結構’其中該反射率調整圖案可為多種不同的圖案所構 成’係配置於該等複數個突起結構以及該等複數個平板結 構之表面。 本發明之另一目的係提供一種反射率調整圖案，該反 射率調整圖案應用於一種背光模組之一反射片結構，該背 光模組包含該反射片結構、一燈箱以及一擴散板，該反射 片結構包含複數個突起結構以及複數個平板結構，其中該 突起結構係為一山型’因此分別具有兩斜面。當該反射片 結構之高度小於四分之三之該燈箱底部與該擴散板之間的 高度時’該突起結構之兩斜面表面較高位置所塗佈面積的 1322310 佔有率’係大於該平板結構所塗佈面積的佔有率。 本發明之另一目的係提供一種反射率調整圖案，該反 射率調整圖案應用於一種背光模組之一反射片結構該背 光模組包含該反射片結構、一燈箱以及一擴散板該反射 片結構包含複數個突起結構以及複數個平板結構，其中當 該反射片結構之高度大於或等於四分之三之該燈箱底部與 該擴散板之間的咼度時，該突起結構之兩斜面表面較高處 所塗佈面積的佔有率，係小於該平板結構所塗佈面積的佔 有率。 本發明之另一目的係提供一種反射率調整圖案，該反 射率調整圖案可為一反射率塗層。該反射率調整圖案應用 於一種背光模組之一反射片結構，該背光模組包含該反射 片結構、一燈箱以及一擴散板，該反射片結構包含複數個 突起結構以及複數個平板結構，其中當該反射片結構之高 度小於四分之三之該燈箱底部與該擴散板之間的高度時， 該突起結構之斜面表面較高處之該反射率塗層的濃度厚 度’係大於該平板結構之該反射率塗層的濃度厚度。 本發明之另一目的係提供一種反射率調整圖案，該反 射率調整圓案可為一反射率塗層。該反射率調整圖案應用 於一種背光模組之一反射片結構，該背光模組包含該反射 片結構、一燈箱以及一擴散板，該反射片結構包含複數個 突，結構以及複數個平板結構，其中當該山型反射片結構 之，度大於或等於四分之三之該燈箱底部與該擴散板之間 的高度時，該突起結構之斜面表面較高處之反射率塗層的 濃度厚度，係小於該平板結構之該反射率塗層的濃度厚度。 本發明之另一目的係提供一種反射率調整圖案，該反 射率調整圖案應用於一種背光模組之一反射片結構，可依 照結構的調整，而規劃不同的尺寸、圖案 '分布密度以及 濃度厚度等，以設计所需要的反射率。 1322310 本發明之另一目的係提供一種反射率調整圖案.，該反 射率調整圖案應用於一種背光模組之一反射片結構，其中 該反射率調整圖案係為一塊狀圖案，且相互平行排列β 本發明之另一目的係提供一種反射率調整圊案，該反 射率調整圖案應用於一種背光模組之一反射片結構，其中 該反射率調整圖案係為一條狀圖案’且相互平行排列。 本發明之另一目的係提供一種反射率調整囷案，該反 射率調整圖案應用於一種背光模組之一反射片結構，其中 該反射率調整圖案係為一點狀圖案。 本發明之另一目的係提供一種反射率調整圖案，該反 射率調整圖案應用於一種背光模組之一反射片結構，其中 該反射率調整圖案係用以印刷、黏貼以及化學或物理蝕刻 與貼附等多種加工塗佈方式。 為了達到以上目的，本發明提供一種背光模組，包含： 一燈箱，具有一容置空間； 複數光源’係放置於該容置空間底部； 一反射片結構，係配置於該容置空間底部與該些光源 之間，其包含： 複數個犬起結構’分別位於兩相鄰光源之間； 複數個平板結構’其分別連結相鄰兩該等突起結 構；其中，該突起結構與該平板結構之表面具有不同之反 射率係用以產生不同的反射效果；以及 一擴散板’配置於該燈箱之該容置空間之上方。 本案得藉由以下列圖示與詳細說明，俾得一更深入之 了解。 【實施方式】 請參閱第如第1Α圖所示，當一山型反射片 結構14之高度小於四分之三之一燈箱底部與一擴散板 16之間的高度時，相鄰於該山型反射片結構14之光源12 1322310 均會發出光線12a、12b以及12c，其中光線12c會直射到 該反射片結構正上方之光線重疊區，且光線丨2b會在該 反射片結構14較高之表面進行大角度反射，因而入射於該 反射片結構14正上方之光線重疊區。所以’部分的光線會 集中於該山型反射片結構丨4的上方，而在該擴散板16上 形成一非預期產生之亮紋（mura) 18 ’導致液晶顯示器顯示 品質的劣化。如第1B圖所示，當該山型反射片結構14， 之兩度大於四分之三之該燈箱底部與該擴散板16之間 的高度時’相鄰於該山型反射片結構丨4，之光源12均會 發出光線121a、121b以及121c’其中光線121a及121b W經該山型反射片結構14，反射，係朝向遠離該山型反射片 _ 結構14’上方的方向照射擴散板16。所以，大部分的光線 不會集中於該反射片結構14，上方之擴散板16，而形成一 非預期產生之暗紋（mura)19,導致液晶顯示器品質的劣化。 請參閱第2A〜2B圖，係為本案較佳實施例之背光模組 剖面示意圖。如第2A圖所示，一背光模組〇2包含一燈箱 20複數個光源22、一反射片結構24。其中，該燈箱20 具有一容置空間以配置複數個光源22以及該山型反射片 結構24。該等複數個光源22可以為冷陰極螢光燈管或發 # 光二極鱧陣列。又，至少兩個光源22配置於該燈箱2〇中，鲁 該反射片結構24排列於該等複數個光源22與該燈箱底部 之間》 - ° 在本實施例中，更包括一擴散板26配置於燈箱2〇之 •容置空間上方，並位於該等複數個光源22與該反射片結構 24上方。該等複數個光源22藉由該反射片結構24以反射 及/或入射光線於該擴散板26»又，該山型反射片結構24 包3複數個大起結構241以及複數個平板結構242，該突 起結構241之表面以及該平板結構242具有不同之^射 率》利用該突起結構241之表面反射率與該平板結構242 10 卿310 之表面反射率之不同’而能提供較為均勻之背光源。 在本實施例中，該反射片結構24係為一山型反射片結 :二不限於該山型反射片結構。該反射片結構24包含複 ^起構241以及複數個平板結構242。該突起結構 糸為山型，因此分別具有兩斜面，兩斜面與該平板 ° 242之表面具有不同之反射率。當該突起結構241之 • 小於四分之三之該燈箱20底部與該擴散板26之間的 同度時，兩斜面之反射率小於該平板結構242之反射率。 相鄰於該大起結構241之光源22均會發出光線22a、22b _ 乂，22c,其中光線22c會直射到該突起結構241正上方 之光線重疊區，且光線22b會在該突起結構241較高之表鲁 面進行大角度反射，因而入射於該突起結構241正上方之 光線重疊區。所以，部分的光線會集中於該山型反射片結 構24之突起結構241的上方，但因為反射該些光線的該突 起結構的斜面較該平板結構242之表面具有較小之反射 率，因此可以減少該擴散板26上原先會形成的一非預期產 生之亮紋。又該平板結構242之表面較該突起結構24i之 斜面具有較大之反射率，因此可以增強該山型反射片結構 24之該平板結構242的上方的光線強度β综合上述，因而 _ 可以提供較為均勻之背光源。 · 同理可知，如第2Β圖所示，當該突起結構241之高度 大於或等於四分之三之該燈箱20底部與該擴散板26之間 的高度時’兩斜面之反射率大於該平板結構之反射率。相 鄰於該山型反射片突起結構241之光源22均會發出光線 • 221a、221b以及221c’其t光線221a及221b經該突起結 構241反射，其反射光路係朝遠離該突起結構241上方的 方向入射擴散板26。所以’大部分的光線不會集中於該山 型反射片結構24之突起結構241上方之擴散板26,容易 形成一非預期產生之暗紋。但因為該斜面較該平板結構之 11 丄丄υ 表面具有較大之反射率’因此可以增加反射至該山型反射 片結構24之突起結構241上方之擴散板26的光線強度。 又’該平板结肖242之表面較該斜面具有較小之反射率， 因此可以減緩反射至該山型反射片結構24之該平板結構 242上方該擴散板26的光線強度，即可改善暗紋的現象。 綜合上述，因而可以提供較為均勻之背光源。 • 清參考第3圖，係為應用本發明背光模組之液晶顯示 器之剖面示意圖，包含：一液晶顯示面板3〇〇、一燈箱3〇、 複數個光源32、一反射片結構34、一反射率調整圖案35 以及一擴散板36。其中’該燈箱3〇具有一容置空間以配 置複數個光源32以及該反射片結構34。該擴散板36係配籲 置於該燈箱之該容置空間之上方。且該液晶顯示面板3〇〇 係配置於該擴散板36之上。又，至少兩個光源32配置於 該燈箱30中，該反射片結構34排列於該等複數個光源32 與該燈箱底部之間。其中，該反射率調整圖案35可依照不 同的結構需求，以規劃不同的尺寸、圖案、漠度厚度分 佈密度等。藉由印刷、黏貼以及化學或物理蝕刻與貼附等 多種加工塗佈方式，轉印於該反射片結構34之表面上利 用不同的反射率來改善該液晶顯示面板3〇〇產生亮紋及暗 •紋的現象。在本實施例中，該反射片結構34係為一山型反鲁 射片結構，但不限於該山型反射片結構。 請參考第4Α〜4D圖，係為習知與本發明反射片結構之 反射率關係囷。其中，橫轴X代表偏離該反射片突起結構 14、14’,,、24 =心的位置，縱轴γ代表亮度值。其中1〇〇、 100、〗00··、100’’’為反射率變化曲線，而11〇、11〇，、11〇"、11〇… 為亮度值變化曲線。所以當該反射片結構14之該突起結構 241之高度小於四分之三該燈箱底板至該擴散板16之間的 高度時’其整體表面之亮度值會產生分佈不均勻的現象， 將會在該反射片結構14中心位置之正上方的擴散板16上 12 1322310 產生亮紋的現象，這種現象是由於在該反射片結構14中心 位置之正上方，為兩側燈管直射光線的重疊投射之處，且 光線經該反射片結構14反射後，也會再入射到到此光線重 叠區之故。 請參照第4A圊’習知的該反射片結構其表面的反 射率為一固定值，如圖第4A圖之水平的反射率變化曲線 100。然而’在該反射片結構14的中心位置其表面的中心 的亮度值較高’且隨著偏離中心位置，矣兩側亮度值變化 曲線110有逐漸向外遞減的趨勢，所以造成亮度值分佈不 均的狀況》 籲 其中’當該反射片結構14之該突起結構241之高度大 於或等於四分之三該燈箱底板至該擴散板16之間的高度 時，其整體表面之亮度值會產生分佈不均勻的現象，將會 在對應於該突起結構241上方的擴散板16上產生暗紋的現 象。這種現象是由於光線經該反射片結構14之該突起結構 241反射後，其反射光路係朝遠離該突起結構241上方的 方向入射該擴散板16,造成該突起結構241上方的亮度偏 低之故β 請參照第4Β圖，習知的該反射片結構14’其表面的 φ 反射率為一固定值，如第4Β圖之水平的反射率變化曲線 100、然而，在該反射片結構14’的中心位置其表面的中心 的亮度值較低’且隨著偏離中心位置，其兩側亮度值變化 曲線110’有逐漸向外遞增的趨勢，所以造成亮度值分佈不均 的狀況》 請參照第4C圖’本發明是當該山型反射片結構24之 該突起結構241之高度小於四分之三該燈箱底板至該擴散 板16之間的高度時’藉由該山型反射片結構24的表面作 一處理，使得該突起結構241之斜面表面的反射率係小於 該平板結構242的反射率’而形成如反射率變化曲線loo”所 1322310 圖繪之分佈。如此，即可對於亮度值進行補偾，以減少經 由該突起結構241的反射而入射到光線重疊區之光線（如 圖1A所繪之光線12b)，此外，增加經由該山型反射片結 構24之該平板結構242反射，而人射到非光線重疊區之= 線，來均衡光線重疊區與非光線重疊區之亮度，使得該山 型反射片結構24的表面亮度值保持一致，而得到如11〇"之 水平的亮度值變化曲線。 請參照第4D圖，本發明是當該反射片結構24之該突 起結構241之高度大於或等於四分之三該燈箱底板至^擴 散板16之間的高度時，藉由該反射片結構24的表面作一 處理使付該犬起結構241之斜面表面的反射率係大於該 平板結構242的反射率，而形成如反射率變化曲線1〇〇…所 圖繪之分佈。如此，即可對於亮度值進行補償，以減少經 由該平板結構242的反射而入射到非光線重疊區之光線， 此外’增加經由該突起結構241反射，而入射到光線重叠 區之光線’來均衡光線重疊區與非光線重疊區之亮度使 得=山型反射片結構24的表面亮度值保持一致，而得到如 110之水平的冗度值變化曲線。如此一來，經由調整表面 反射率之該反射片結構24，以避免於該擴散板16上形成 φ 集中的亮紋或暗紋。 請參考第5A〜5C圖，係為本發明一種反射片結構之局 部立體示意圖。其中該反射率調整圖案35a、35b、35c的 圖案可依照不同的需求，以規劃不同的尺寸、圖案、塗佈 濃度、分佈密度等。而該反射率調整圖案35a、35b、35c 可藉由印刷、黏貼以及化學或物理银刻與貼附等多種加工 塗佈方式，係以轉印於該反射片結構34上，進而調整該反 射片結構34之表面的反射率，以改善液晶顯示面板 紋及暗紋的現象。 儿 如5A〜5C圖所示，本發明透過圖案改變該反射片結構 1322310 34之表面的反射率，其中該反射片結構34之該突起結構 之表面較高處之該等反射率調整圖案35a、35b、35c，其 反射率小於位於該突起結構較低處之該等反射率調整圖案 35a、35b、35c，所以該反射片結構34之表面較高處之該 等反射率調整圖案35a、35b、35c,其表面面積的佔有率 應大於較低處之該等反射率調整囷案35a、35b、35c之表 面面積佔有率，進而有效改善亮紋β 舉例而言，請參考第5Α圖，其中該反射率調整圖案 35a之表面圖案可為條狀。該反射片結構34之高處表面了 其相鄰之該反射率調整圖案35 a的間距dl，則是小於位 於較低處之相鄰該反射率調整圖案35a的間距d2。再者， 請參考第5B圖，其中該反射率調整圖案35b表面的圖案可 為塊狀》該反射片結構34之高處表面，每一反射率調整圖 案35b的尺寸則是大於較低處之每一反射率調整圖案35b 的尺寸。另外，請參考第5C圖，其中該反射率調整圖案 35c表面的圖案可為點狀。該反射片結構％之高處表面/，' 其反射率調整圖案35c的分佈密度則是大於位於較低 反射率調整圖帛35c的分佈密度 '然而，該等反射率調整 圖案35a、35b、35c表面的圖案可為各種任意的圖案。一 般而言，該反射片結構34上增加之反 係 降低反射率。由第5A~5C圖中可以看到，增加 2案係分佈於該反射片結肖34的突起結構上而沒有分 佈在該反射片結構34的平板結構上。因此，整 J射片結構夕上的突起結構較平板結構具有較低的反？ :射射率係高處比低處具有較低的 反射李。利用延樣的反射率分佈， 上產生的亮紋問題。 j有效解决於顯不面板 再者’請參考第6A〜6C圖，係為本發明一種反射片結 構之局部立體示意圖。本發明為利 用該等反射率調整圖案 15 1322310 35a’ 、35b’ 、35c’ ，係用以改變表面之反射率。該反射 片結構34之高處表面之該等反射率調整圖案35a， ' 35b 、35c’ ’其反射率大於位於較低處之該反射率調整 圖案35a’ ' 35b’ 、35c’ 。所以該突起結構241之高處 表面之該等反射率調整圊案35a， 、35b， 、35c，，其表 面面積的佔有率’應小於該平板結構242之該等反射率調 整圖案35a 、35b’ 、35c’之表面面積佔有率，以有效 改善暗紋》 如第6A圖所示，其中該反射率調整圖案35a，之表面 的圖案可為條狀。該反射片結構34之高處表面，其相鄰之 反射率調整圖案35a’的間距dl，則是大於位於較低處相 鄰之反射率調整圊案35a，的間距d2及該平板結構242之1322310 IX. Description of the Invention: [Technical Field] The present invention provides a light source module, and more particularly to a backlight module that can be used in a liquid crystal display to provide a uniform backlight. • [Prior Art] The liquid crystal display is composed of a liquid crystal panel and a backlight unit, wherein the liquid crystal display panel comprises a color filter substrate (c〇l〇rFilter, C/). F), a thin film transistor array φ and a substrate are constructed by a liquid crystal layer. The color filter substrate is provided with a common electrode (pixel electrode), and the plurality of pixel electrodes are provided on the thin film transistor array substrate, and the plurality of pixel electrodes are common to the pixel electrode The magnitude of the electric field between the electrodes controls the rotation of the liquid crystal molecules to determine the amount of light passing through. The backlight module is used to provide a light source required for displaying the image on the liquid crystal display panel. Furthermore, it takes a certain time to drive the rotation of the liquid crystal molecules by the thin film transistor. Therefore, during the rotation of the liquid crystal molecules, the liquid crystal display panel may not be able to effectively control the amount of light passing through, and smear (d〇uble image) The phenomenon that the motion picture response time (Motion Picture B Response. Time) of the liquid crystal display panel increases 'affects the quality of the liquid crystal display panel. In order to improve the above-mentioned smear phenomenon, the conventional technology proposes a scan back ight unit, and the light sources of different liquid crystal display blocks are illuminated at different times in a scanning manner. However, in order to solve the phenomenon of mutual interference of light between different liquid crystal display blocks, the conventional technology has a mountain reflection sheet structure in the backlight module to separate the light sources at different positions to avoid mutual interference. For example, in a scanning backlight module in which a mountain-shaped reflective sheet structure is not provided, for example, when the light of one of the liquid crystal display blocks should be a dark time zone, the light of the adjacent liquid crystal display block may be received. As a result, the liquid crystal display block is not dark enough, which in turn affects the display of the moving image. The reference layer 1A to 1B is a partial cross-sectional view of a conventional backlight module, and the backlight module 01 of the prior art includes a light box 1 〇 and a plurality of light sources 12 (in this figure only Two light sources are shown), a mountain-type reflective sheet structure 14 and a diffuser plate 16. Wherein, the mountain-shaped reflective sheet structure is disposed at the bottom of the light box 10, and the mountain-shaped reflective sheet structure 14 is disposed between adjacent two display blocks, and the surface of the mountain-shaped reflective sheet structure u has good Reflective, to reflect and / or light incident on its surface to achieve the purpose of using the light source. However, it has been found practically that a backlight module having the mountain-type reflective sheet structure 14 results in the formation of an undesired bright or mura, and the display quality of the liquid crystal display. Therefore, the technology of the conventional backlight module has the following defects: a mountain-shaped reflective sheet structure is disposed in the backlight module to separate the light sources at different positions to avoid mutual interference, but because of the setting of the mountain-shaped reflective sheet structure It is expected to produce bright lines and dark lines, which affect the quality of the liquid crystal display. The present invention is based on the lack of the prior art and the idea of improving the invention. The invention aims to provide a backlight for a liquid crystal display. The main object of the present invention is to provide a backlight for a liquid crystal display. The module 'where the backlight module comprises a reflective sheet structure. The reflective sheet, the -» structure can be a reflective sheet structure, comprising a plurality of protruding structures and a plurality of flat structures. The surface reflectance of the protruding structure is different from the surface reflectance of the flat structure, thereby providing a more uniform sentence. Backlight. Another object of the present invention is to provide a backlight module for a liquid crystal display, wherein the backlight module comprises a reflective sheet structure, a light box, and a diffusion plate. The reflective sheet structure can be a mountain-shaped reflective sheet structure, including a plurality of protruding structures and a plurality of plate-like structures. When the thickness of the reflective sheet structure is less than two-quarters, the height between the bottom of the light box and the diffusing plate is 1322310. The anti-it surface is smaller than the surface of the flat structure to improve the bright streak, thereby providing a comparative The uniformity of the sentence = the strength of the back, the other is to provide a light module for the liquid crystal display, wherein the backlight module comprises a reflective sheet structure and a diffusion plate. The reflective sheet structure can be a mountain-shaped reflective sheet structure, a plurality of protruding structures, and a plurality of flat structures. When the reflective sheet is configured to be equal to or equal to three-quarters of the twist between the bottom of the light box and the diffusing plate, the surface of the flat structure has a smaller reflectance than the surface of the protruding structure, thereby slowing down The light intensity above the flat structure improves the phenomenon of dark lines and thus provides a relatively uniform backlight. Another object of the present invention is to provide a reflective sheet structure, which can be a mountain-shaped reflective sheet structure, including a plurality of protruding structures and a plurality of flat structures. The reflective sheet structure further includes a reflectivity adjusting pattern. The reflectance adjustment pattern is disposed on the surface of the plurality of protrusion structures and the plurality of plate structures. Another object of the present invention is to provide a reflectance adjustment pattern applied to a reflective sheet structure, which can be a mountain-shaped reflective sheet structure, including a plurality of protruding structures and a plurality of flat structures. The reflectance adjustment pattern may be formed by a plurality of different patterns disposed on the surface of the plurality of protrusion structures and the plurality of flat structures. Another object of the present invention is to provide a reflectance adjustment pattern applied to a reflective sheet structure of a backlight module, the backlight module including the reflective sheet structure, a light box, and a diffusing plate, the reflection The sheet structure comprises a plurality of protruding structures and a plurality of flat structures, wherein the protruding structures are a mountain type and thus have two inclined faces, respectively. When the height of the reflective sheet structure is less than three-quarters of the height between the bottom of the light box and the diffusing plate, the '1322310 occupancy ratio of the coated area of the two inclined surfaces of the protruding structure is greater than the flat structure. The occupancy rate of the coated area. Another object of the present invention is to provide a reflectance adjustment pattern applied to a reflective sheet structure of a backlight module. The backlight module includes the reflective sheet structure, a light box, and a diffusing plate. The reflective sheet structure And comprising a plurality of protruding structures and a plurality of flat structures, wherein when the height of the reflective sheet structure is greater than or equal to three-quarters of the twist between the bottom of the light box and the diffusing plate, the two inclined surfaces of the protruding structure are higher The occupancy rate of the coated area of the space is less than the occupation rate of the area coated by the flat structure. Another object of the present invention is to provide a reflectance adjustment pattern which can be a reflectivity coating. The reflectance adjustment pattern is applied to a reflective sheet structure of a backlight module. The backlight module includes the reflective sheet structure, a light box, and a diffusing plate. The reflective sheet structure includes a plurality of protruding structures and a plurality of flat structures. When the height of the reflective sheet structure is less than three-quarters of the height between the bottom of the light box and the diffusing plate, the concentration thickness of the reflective coating at a higher portion of the inclined surface of the protruding structure is greater than the flat structure. The concentration thickness of the reflectivity coating. Another object of the present invention is to provide a reflectance adjustment pattern which can be a reflectivity coating. The reflectance adjustment pattern is applied to a reflective sheet structure of a backlight module. The backlight module includes the reflective sheet structure, a light box, and a diffusing plate. The reflective sheet structure includes a plurality of protrusions, a structure, and a plurality of flat structures. Wherein the concentration of the reflectivity coating of the raised surface of the raised structure is higher than the height between the bottom of the light box and the diffusing plate when the degree of the mountain-shaped reflecting sheet is greater than or equal to three-quarters, It is less than the concentration thickness of the reflectivity coating of the flat structure. Another object of the present invention is to provide a reflectance adjustment pattern applied to a reflective sheet structure of a backlight module, which can plan different sizes, patterns 'distribution density, and concentration thickness according to structural adjustment. Etc. to design the required reflectivity. 1322310 Another object of the present invention is to provide a reflectance adjustment pattern applied to a reflective sheet structure of a backlight module, wherein the reflectance adjustment pattern is a block pattern and arranged in parallel with each other. Another object of the present invention is to provide a reflectance adjustment pattern applied to a reflective sheet structure of a backlight module, wherein the reflectance adjustment patterns are in a strip pattern and are arranged in parallel with each other. Another object of the present invention is to provide a reflectance adjustment pattern which is applied to a reflection sheet structure of a backlight module, wherein the reflectance adjustment pattern is a dot pattern. Another object of the present invention is to provide a reflectance adjustment pattern applied to a reflective sheet structure of a backlight module, wherein the reflectance adjustment pattern is used for printing, pasting, and chemical or physical etching and pasting. A variety of processing and coating methods are attached. In order to achieve the above object, the present invention provides a backlight module, comprising: a light box having an accommodating space; a plurality of light sources 'located at the bottom of the accommodating space; and a reflective sheet structure disposed at the bottom of the accommodating space Between the light sources, the method includes: a plurality of canine structures are respectively located between two adjacent light sources; a plurality of flat structures respectively connecting the adjacent two of the protruding structures; wherein the protruding structure and the flat structure The surface has different reflectances for generating different reflection effects; and a diffuser plate is disposed above the accommodating space of the light box. In this case, we can get a deeper understanding by using the following illustrations and detailed explanations. [Embodiment] Referring to FIG. 1 , when the height of a mountain-type reflective sheet structure 14 is less than the height between one third of the light box bottom and a diffuser panel 16 , adjacent to the mountain type The light source 12 1322310 of the reflective sheet structure 14 emits light rays 12a, 12b and 12c, wherein the light rays 12c are directly incident on the light overlapping region directly above the reflective sheet structure, and the light rays 2b are on the higher surface of the reflective sheet structure 14. A large angle of reflection is made and thus incident on the overlapping region of light directly above the reflective sheet structure 14. Therefore, the portion of the light is concentrated on the mountain-shaped reflective sheet structure 丨4, and the formation of an undesired mura 18 on the diffusing plate 16 causes deterioration in the display quality of the liquid crystal display. As shown in FIG. 1B, when the mountain-type reflective sheet structure 14 is more than two-quarters greater than three-quarters of the height between the bottom of the light box and the diffusing plate 16, 'adjacent to the mountain-shaped reflecting sheet structure 丨4 The light source 12 emits light rays 121a, 121b, and 121c' through which the light rays 121a and 121b are reflected and illuminate the diffusing plate 16 in a direction away from the mountain-shaped reflective sheet _ structure 14'. . Therefore, most of the light is not concentrated on the reflective sheet structure 14, and the diffusing plate 16 above, forming an undesired mura 19, resulting in deterioration of the quality of the liquid crystal display. Please refer to FIG. 2A to FIG. 2B, which are schematic cross-sectional views of a backlight module according to a preferred embodiment of the present invention. As shown in FIG. 2A, a backlight module 〇2 includes a light box 20, a plurality of light sources 22, and a reflective sheet structure 24. The light box 20 has an accommodating space for arranging a plurality of light sources 22 and the mountain-shaped reflective sheet structure 24. The plurality of light sources 22 can be cold cathode fluorescent tubes or arrays of light emitting diodes. Moreover, at least two light sources 22 are disposed in the light box 2, and the reflective sheet structure 24 is arranged between the plurality of light sources 22 and the bottom of the light box. - ° In this embodiment, a diffusing plate 26 is further included. It is disposed above the accommodating space of the light box 2, and is located above the plurality of light sources 22 and the reflective sheet structure 24. The plurality of light sources 22 are reflected and/or incident on the diffuser plate 26 by the reflective sheet structure 24, and the mountain-shaped reflective sheet structure 24 includes a plurality of large structures 241 and a plurality of flat structures 242. The surface of the protruding structure 241 and the flat structure 242 have different transmittances, and the surface reflectance of the protruding structure 241 is different from the surface reflectance of the flat structure 242 10 ding 310 to provide a relatively uniform backlight. . In this embodiment, the reflective sheet structure 24 is a mountain-shaped reflective sheet: the second is not limited to the mountain-shaped reflective sheet structure. The reflective sheet structure 24 includes a composite structure 241 and a plurality of planar structures 242. The protrusion structure is a mountain type, and thus has two slopes respectively, and the two slopes have different reflectances from the surface of the plate 242. When the protrusion structure 241 is less than three quarters of the same degree between the bottom of the light box 20 and the diffusion plate 26, the reflectivity of the two slopes is smaller than the reflectance of the plate structure 242. The light source 22 adjacent to the large structure 241 emits light 22a, 22b_乂, 22c, wherein the light 22c is directly incident on the light overlapping area directly above the protruding structure 241, and the light 22b is compared in the protruding structure 241. The high surface of the high surface is reflected at a large angle, and thus is incident on the overlapping region of the light directly above the protruding structure 241. Therefore, part of the light is concentrated on the protruding structure 241 of the mountain-shaped reflective sheet structure 24, but since the inclined surface of the protruding structure reflecting the light has a smaller reflectance than the surface of the flat structure 242, An undesired bright streak that would otherwise be formed on the diffuser plate 26 is reduced. Moreover, the surface of the flat structure 242 has a larger reflectance than the inclined surface of the protruding structure 24i, so that the light intensity β above the flat structure 242 of the mountain-shaped reflective sheet structure 24 can be enhanced to integrate the above, and thus A uniform backlight. Similarly, as shown in FIG. 2, when the height of the protruding structure 241 is greater than or equal to three-quarters of the height between the bottom of the light box 20 and the diffusing plate 26, the reflectivity of the two inclined surfaces is greater than the flat plate. The reflectivity of the structure. The light source 22 adjacent to the mountain-shaped reflective sheet protrusion structure 241 emits light 221a, 221b, and 221c', and the t-light rays 221a and 221b are reflected by the protruding structure 241, and the reflected light path is directed away from the protruding structure 241. The diffusing plate 26 is incident on the direction. Therefore, most of the light is not concentrated on the diffusing plate 26 above the protruding structure 241 of the mountain-shaped reflecting sheet structure 24, and an undesired dark streak is easily formed. However, since the slope has a larger reflectance than the 11 丄丄υ surface of the flat structure, the light intensity of the diffuser 26 reflected above the projection 241 of the mountain-shaped reflector structure 24 can be increased. Moreover, the surface of the flat plate 242 has a smaller reflectance than the inclined surface, so that the light intensity of the diffusing plate 26 reflected on the flat plate structure 242 of the mountain-shaped reflective sheet structure 24 can be slowed down, thereby improving the dark lines. The phenomenon. Combining the above, it is possible to provide a relatively uniform backlight. Referring to FIG. 3, a cross-sectional view of a liquid crystal display using the backlight module of the present invention includes: a liquid crystal display panel 3〇〇, a light box 3〇, a plurality of light sources 32, a reflective sheet structure 34, and a reflection. The rate adjustment pattern 35 and a diffusion plate 36. Wherein the light box 3 has an accommodating space for arranging a plurality of light sources 32 and the reflection sheet structure 34. The diffuser plate 36 is arranged to be placed above the accommodating space of the light box. Further, the liquid crystal display panel 3 is disposed on the diffusion plate 36. Further, at least two light sources 32 are disposed in the light box 30, and the reflection sheet structure 34 is arranged between the plurality of light sources 32 and the bottom of the light box. The reflectance adjustment pattern 35 can be configured according to different structural requirements to plan different sizes, patterns, indifference thickness distribution densities, and the like. By printing, pasting, and chemical or physical etching and attaching, a variety of processing and coating methods are applied to the surface of the reflective sheet structure 34 to improve the brightness and darkness of the liquid crystal display panel 3 by using different reflectances. • The phenomenon of lines. In the present embodiment, the reflective sheet structure 34 is a mountain type anti-lubricated sheet structure, but is not limited to the mountain type reflective sheet structure. Please refer to Figures 4 to 4D for the reflectance relationship between the conventional and reflective sheet structures of the present invention. Here, the horizontal axis X represents a position deviating from the reflection sheet projection structures 14, 14', 24, 24, and the vertical axis γ represents a luminance value. Among them, 1〇〇, 100, 0000··, 100'’’ are reflectance curves, and 11〇, 11〇, 11〇", 11〇... are brightness value curves. Therefore, when the height of the protruding structure 241 of the reflective sheet structure 14 is less than three-quarters of the height between the light-box bottom plate and the diffusing plate 16, the brightness value of the entire surface may be unevenly distributed. 12 1322310 on the diffuser plate 16 directly above the center position of the reflector structure 14 produces a bright streak phenomenon, which is due to the overlapping projection of the direct light of the lamps on both sides directly above the center position of the reflector structure 14. Whereas, and the light is reflected by the reflective sheet structure 14, it will be incident on the overlapping area of the light. Referring to the conventional reflection sheet structure of the fourth embodiment, the reflectance of the surface is a fixed value, and the reflectance change curve 100 of the level shown in Fig. 4A. However, 'the brightness value of the center of the surface is higher at the center position of the reflection sheet structure 14', and with the deviation from the center position, the brightness value change curve 110 on both sides of the reflection sheet tends to gradually decrease outward, so that the brightness value distribution is not The condition of the whole is called "When the height of the protruding structure 241 of the reflective sheet structure 14 is greater than or equal to three-quarters of the height between the light-box bottom plate and the diffusing plate 16, the brightness value of the entire surface thereof is distributed. The phenomenon of unevenness will cause a phenomenon of dark lines on the diffusion plate 16 corresponding to the protrusion structure 241. The phenomenon is that after the light is reflected by the protruding structure 241 of the reflective sheet structure 14 , the reflected optical path is incident on the diffusing plate 16 in a direction away from the protruding structure 241 , so that the brightness above the protruding structure 241 is low. Therefore, referring to FIG. 4, the reflection φ reflectivity of the surface of the reflective sheet structure 14' is a fixed value, and the reflectance change curve 100 of the level of FIG. 4, however, in the reflective sheet structure 14' The center position of the surface has a lower luminance value at the center of the surface, and as the off-center position, the luminance value change curve 110' on both sides gradually increases outward, so that the luminance value distribution is uneven. 4C. The present invention is when the height of the protruding structure 241 of the mountain-shaped reflective sheet structure 24 is less than three-quarters of the height between the light-box bottom plate and the diffuser plate 16 by the mountain-shaped reflective sheet structure 24. The surface is treated such that the reflectivity of the beveled surface of the protruding structure 241 is smaller than the reflectance of the flat plate structure 242 and forms a distribution as shown in Fig. 1322310 of the reflectance change curve loo. The brightness value may be complemented to reduce the light incident on the overlapping region of the light via the reflection of the protrusion structure 241 (such as the light 12b as depicted in FIG. 1A), and further, the plate passing through the mountain type reflection sheet structure 24 may be added. The structure 242 reflects, and the person shoots the line of the non-light overlapping area to balance the brightness of the overlapping area of the light and the non-light overlapping area, so that the surface brightness value of the mountain-shaped reflecting sheet structure 24 is consistent, and the result is as follows: The horizontal brightness value change curve. Referring to FIG. 4D, the present invention is when the height of the protrusion structure 241 of the reflection sheet structure 24 is greater than or equal to three quarters of the height between the light box bottom plate and the diffusion plate 16. When the surface of the reflective sheet structure 24 is processed, the reflectance of the beveled surface of the canine structure 241 is greater than the reflectance of the flat structure 242, and the reflectance curve is formed as shown in the figure. The distribution of the luminance is such that the luminance value is compensated to reduce the light incident on the non-light overlapping region via the reflection of the flat structure 242, and further 'increased reflection through the protruding structure 241 The light incident on the overlapping region of the light 'equalizes the brightness of the overlap region of the light and the non-light overlap region so that the surface luminance value of the mountain-type reflective sheet structure 24 is consistent, and a redundancy value curve such as a level of 110 is obtained. In the first embodiment, the reflective sheet structure 24 of the surface reflectance is adjusted to avoid the formation of φ concentrated bright lines or dark lines on the diffusing plate 16. Referring to FIGS. 5A to 5C, the present invention is a reflective sheet structure. A partial perspective view, wherein the patterns of the reflectance adjustment patterns 35a, 35b, 35c can be arranged according to different requirements to plan different sizes, patterns, coating concentrations, distribution densities, etc. The reflectance adjustment patterns 35a, 35b, 35c The film can be transferred onto the reflective sheet structure 34 by printing, pasting, and chemical or physical silver etching and attaching, thereby adjusting the reflectance of the surface of the reflective sheet structure 34 to improve the liquid crystal. Display the phenomenon of panel grain and dark lines. As shown in FIG. 5A to FIG. 5C, the present invention changes the reflectance of the surface of the reflective sheet structure 1322310 34 through a pattern, wherein the reflective sheet structure 34 has a higher reflectivity adjustment pattern 35a on the surface of the protruding structure. 35b, 35c, the reflectance is smaller than the reflectance adjustment patterns 35a, 35b, 35c located at a lower portion of the protrusion structure, so the reflectance adjustment patterns 35a, 35b of the surface of the reflection sheet structure 34 are higher. 35c, the occupation ratio of the surface area should be larger than the surface area occupancy ratio of the reflectance adjustment files 35a, 35b, 35c at the lower position, thereby effectively improving the bright-grain β. For example, please refer to the fifth figure, where The surface pattern of the reflectance adjustment pattern 35a may be strip-shaped. The height d of the reflective sheet structure 34 is adjacent to the pitch dl of the reflectance adjusting pattern 35a, which is smaller than the pitch d2 of the reflectance adjusting pattern 35a adjacent to the lower portion. In addition, please refer to FIG. 5B, wherein the pattern of the surface of the reflectance adjusting pattern 35b may be a block-shaped surface of the reflecting sheet structure 34, and the size of each of the reflectivity adjusting patterns 35b is greater than the lower portion. The size of each reflectance adjustment pattern 35b. In addition, please refer to Fig. 5C, in which the pattern of the surface of the reflectance adjusting pattern 35c may be a dot shape. The surface of the reflector structure is at a height of /, 'the distribution density of the reflectance adjustment pattern 35c is larger than the distribution density at the lower reflectance adjustment map c 35c'. However, the reflectance adjustment patterns 35a, 35b, 35c The pattern of the surface can be any of a variety of patterns. In general, the added inverse of the reflective sheet structure 34 reduces the reflectivity. As can be seen from Figs. 5A to 5C, the addition of the case is distributed over the projection structure of the reflection sheet member 34 without being distributed on the flat plate structure of the reflection sheet structure 34. Therefore, the protrusion structure on the eve of the entire J-projection structure has a lower inverse than the flat structure. : The rate of incidence is lower at the height than at the lower point. Using the reflectance distribution of the sample, the problem of bright lines produced on it. j is effectively solved by the display panel. Referring to Figures 6A to 6C, it is a partial perspective view of a reflection sheet structure of the present invention. The present invention utilizes these reflectance adjustment patterns 15 1322310 35a', 35b', 35c' to change the reflectivity of the surface. The reflectance adjusting patterns 35a, '35b, 35c'' of the upper surface of the reflecting sheet structure 34 have a reflectance higher than the reflectance adjusting patterns 35a'' 35b', 35c' located at the lower portion. Therefore, the reflectance adjustment patterns 35a, 35b, and 35c of the upper surface of the protrusion structure 241 should have a smaller surface area occupancy ratio than the reflectance adjustment patterns 35a and 35b of the flat plate structure 242. The surface area occupancy ratio of 35c' is effective to improve the dark lines as shown in Fig. 6A, wherein the pattern of the surface of the reflectance adjusting pattern 35a may be strip-shaped. The upper surface of the reflective sheet structure 34 has a pitch d1 adjacent to the reflectance adjusting pattern 35a' which is larger than the pitch d2 of the reflectance adjusting pattern 35a located at a lower portion and the flat structure 242.
相鄰反射率調整圖案35a，的間距d3〇再者，請參考第6B 圖’其中該反射率調整圖案35b，之表面圓案可為塊狀。 該反射片結構34之該突起結構241的高處表面，其每一反 射率調整圖案35b，的尺寸則是小於該突起結構241的較 低處及該平板結構242之每一反射率調整圖案35b，的尺 寸。 另外’請參考第6C圖’其中該反射率調整圖案35c， •=表面圖案可為點狀，該反射片結構34之高處表面，其該 突起結構241高處表面的分佈密度，則是小於該突起結構 241的較低處及該平板結構242之圖案的分佈密度。缺而， 該反射率調整圖案35a， 、35b， 、35c，之表面圖案可為 各種任意的圖案。由第6A〜6C圖中可以看到，增加之反射 率調整圖案分佈的面積於該反射片結構的平板結構上較突 起結構具有較大的面積分佈。也就是說，該突起結構上的 反射率係高於該平板結構的反射率。利用這樣的反射率分 佈，可有效解決於顯示面板上產生的暗紋問題。 另一方面，請參考第7A〜7B圖，係為太發明一種配置 1322310 有反射塗層之反射片結構的局部立體示意圖。請參考第7A 圊，該反射率調整圖案35d可為一反射塗層d4,其中該突 起結構241之高處表面，該反射塗唐d4係小於該反射片結 構34之反射率，而該反射塗層d4的厚度係大於位於該突 起結構241較低處之反射塗層的厚度。如此使得該反射片 结構34其反射率係為該突起結構241之高處具有較低的反 射率’該突起結構241的低處具有較高的反射率並且該反 射片結構34的平板結構242則具有最高的反射率，以解決 亮紋的問題。 請參考第7B囷，該反射率調整層35d，可為一反射塗 響層d4’ ’其中該平板結構242之表面，該反射塗層d4，的 _ 厚度係大於該突起結構241之反射塗層的厚度，例如於該 突起結構241上不配置該反射塗層，僅配置於該平板結構 242之表面。如此使得該反射片結構34其反射率係為該突 起結構241較該平板結構242具有較高的反射率，以解決 亮紋的問題。 依據該較佳具趙實施例’其中，兩個相鄰的顯示區塊 之間以該反射片結構24之該突起結構241相隔，於該反射 片結構24之該突起結構241以及該平板結構242上加裝該 #反射率調整圏案35,以取代習知技術所採用的掃描式背光 模組。依據液晶顯示面板品質上的缺點，利用該突起結構 241以及該平板結構242反射率的差異，進而改變該反射 率調整圖案35的尺寸、圖案、分佈密度以及塗佈濃度等加 以解決。 — 值得一提的是，本發明為了避免亮紋及暗紋的產生， 藉由不同的反射位置得以產生不同的反射率，而該反射率 調整圖案35的尺寸、圖案、分佈密度以及塗佈濃度，以設 計所需要的反射率。 β 本案得由熟知此技術之人士任施匠思而為諸般修飾， 17 1322310 然皆不脫如附申請專利範圍所欲保護者β 【圖式簡單說明】. 第1Α〜1Β圓係為習知背光模組之局部剖面示意圖。 第2Α〜2Β圖係為本發明較佳實施例之背光模組之 不意圖。 第3圖係為本發明較佳實施例之液晶顯示器之立體示音 第4Α〜4D圖係為習知與本發明反射片結構之反射 係圖。 第5Α〜5C圖係為本發明之反射片結構之局部立趙示意 圖。 第6Α〜6C圖係為本發明之反射片結構之局部立趙示意 圖。 第7Α〜7Β圖係為本發明一種配置有反射塗層之反射片 結構的局部立體示意圖。 【圖示符號說明】 300液晶顯示器 01、02背光模組 10、20、30 燈箱 12、22、32複數個光源 14、14’反射片結構 24、34反射片結構 16、26、36擴散板 35、35&〜35(1、35〜35(1’反射率調整圖案 18亮紋 19暗紋 12a〜12c、121a〜121c、22a〜22c、221a〜221c 光線 241突起結構 18 1322310 242平板結構 100〜100'"反射率變化曲線 110〜11(Γ亮度值變化曲線 dl、d2、d3 間距 d4、d4’反射率塗層Further, the pitch d3 of the adjacent reflectance adjusting patterns 35a may be referred to in Fig. 6B, wherein the reflectance adjusting pattern 35b may have a block shape. The height of the surface of the protrusion structure 241 of the reflective sheet structure 34 is smaller than the lower portion of the protrusion structure 241 and each of the reflectance adjustment patterns 35b of the flat structure 242. ,size of. Further, 'Please refer to FIG. 6C', wherein the reflectance adjustment pattern 35c, • the surface pattern may be a dot shape, and the height of the surface of the reflective sheet structure 34, the distribution density of the surface of the protrusion structure 241 is smaller than The lower portion of the protrusion structure 241 and the distribution density of the pattern of the plate structure 242. Further, the surface patterns of the reflectance adjusting patterns 35a, 35b, and 35c may be various arbitrary patterns. As can be seen from Figs. 6A to 6C, the area of the increased reflectance adjustment pattern distribution has a larger area distribution on the flat structure of the reflective sheet structure than the protruding structure. That is, the reflectance on the protrusion structure is higher than the reflectance of the flat structure. With such a reflectance distribution, the problem of dark lines generated on the display panel can be effectively solved. On the other hand, please refer to the figures 7A to 7B, which is a partial perspective view of a reflective sheet structure having a reflective coating of 1322310. Referring to FIG. 7A, the reflectance adjusting pattern 35d may be a reflective coating d4, wherein the raised surface of the protruding structure 241 is smaller than the reflectivity of the reflective sheet structure 34, and the reflective coating is applied. The thickness of layer d4 is greater than the thickness of the reflective coating located at a lower portion of the raised structure 241. Thus, the reflection sheet structure 34 has a reflectance such that the height of the protrusion structure 241 has a lower reflectance. The lower portion of the protrusion structure 241 has a higher reflectance and the flat structure 242 of the reflection sheet structure 34 is Has the highest reflectivity to solve the problem of bright lines. Referring to FIG. 7B, the reflectance adjusting layer 35d may be a reflective smear layer d4 ′′, wherein the surface of the flat structure 242 is thicker than the reflective coating of the protruding structure 241. For example, the reflective coating is not disposed on the protruding structure 241, and is disposed only on the surface of the flat structure 242. Thus, the reflectivity of the reflective sheet structure 34 is such that the protruding structure 241 has a higher reflectance than the flat structure 242 to solve the problem of bright lines. According to the preferred embodiment, wherein the two adjacent display blocks are separated by the protruding structure 241 of the reflective sheet structure 24, the protruding structure 241 of the reflective sheet structure 24 and the flat structure 242 The # reflectance adjustment file 35 is added to replace the scanning backlight module used in the prior art. According to the disadvantages of the quality of the liquid crystal display panel, the difference in reflectance between the protrusion structure 241 and the flat plate structure 242 is utilized, and the size, pattern, distribution density, coating concentration, and the like of the reflectance adjustment pattern 35 are further changed. It is worth mentioning that, in order to avoid the occurrence of bright lines and dark lines, different reflectances are generated by different reflection positions, and the size, pattern, distribution density and coating concentration of the reflectance adjustment pattern 35 are obtained. To design the required reflectivity. β This case has been modified by people who are familiar with this technology, and 17 1322310 is not in need of protection as claimed in the patent application. [Simplified illustration]. The first Α~1Β is a conventional A partial cross-sectional view of the backlight module. The second to second drawings are not intended to be a backlight module of the preferred embodiment of the present invention. Figure 3 is a perspective view of a liquid crystal display according to a preferred embodiment of the present invention. Figures 4 to 4D are reflection diagrams of conventional and reflective sheet structures of the present invention. The fifth to fifth 5C diagrams are partial schematic diagrams of the structure of the reflection sheet of the present invention. The sixth to sixth pictures are schematic diagrams of the partial reflection of the structure of the reflection sheet of the present invention. The seventh to seventh drawings are partial perspective views of a structure of a reflective sheet provided with a reflective coating according to the present invention. [Description of symbols] 300 liquid crystal display 01, 02 backlight module 10, 20, 30 light box 12, 22, 32 a plurality of light sources 14, 14' reflective sheet structure 24, 34 reflective sheet structure 16, 26, 36 diffuser 35 35&~35 (1, 35 to 35 (1' reflectance adjustment pattern 18 bright grain 19 dark lines 12a to 12c, 121a to 121c, 22a to 22c, 221a to 221c light 241 protrusion structure 18 1322310 242 flat structure 100~ 100'" reflectance change curve 110~11 (Γ brightness value change curve dl, d2, d3 pitch d4, d4' reflectivity coating
1919