201027198 六、發明說明： 【發明所屬之技術領域】 ' 本發明有關於一種液晶改良結構及其製作方法，主要 ，可以對可見光波長範圍内的光源進行反射，同時亦可應用 在反射式、穿透式或半反射半穿透式的面板上。 【先前技術】 ❿ 一般存在於自然界的物質主要可以區分氣態、液態以 及固態。這些狀態在某些特定的條件下可以互相的轉變， 例如溫度或壓力的改變，這就是我們一般所說的相變化。 對大部分的物質來說在發生相變化時，僅僅是由某一相變 化到另外一相，例如由固態變化成為液態，且在相變化的 過程中並沒有中間過渡帶的發生。 然而有些物質在加熱熔融後，其相變化並不直接由固 體變為液體。這些物質在失去某些固體性質後仍然具有某 ❹些的規則性，一般稱之為液晶（liquid crystal，LC)。這 種狀態的物質同時具有固體晶體的某種程度的規則性排 列狀態以及液體的某種程度流動性。就因為有這種特殊的 性質，因此液晶物質的應用非常重要而廣泛。 目前業界經常使用的液晶主要包括有以下幾種： 層列型液晶（smect ic LC):這類型的液晶為棒狀的分子 以層狀構造排列，各個分子與層面垂直或具有一傾斜角 度，而且所構呈的分子均為互相平行排列。 向列型液晶（nemat ic LC):向列型液晶亦為棒狀分子作 3 201027198 平行排列，其分子軸方向保持平行，但不具有層列型液晶 般的層狀構造，只有一維的規則度。具有光學上的正折射 .性，與層列型液晶比較，該液晶分子於長軸方向容易自由 運動，因此其分子間的作用力小，黏度也較小，且易於滑 動，為所有的種類液晶中，流動性最大者，是液晶成員中 最重要的，也是最廣泛被使用者。 膽固醇液晶（cholesteric LC):膽固醇型液晶基本上 都具有不對稱碳原子。由這類分子所構成的液晶，其分子 翁 平行堆積層狀排列，層和層間互相平行，在每一層中分子 有一向列型一般彼此同向排列著，其長軸和層面平行。在 相鄰的兩層之間，分子的長軸方向規則性地依次旋轉一定 角度，層層旋轉下來形成一個螺旋狀結構。 由於膽固醇型液晶具有雙穩態的特性，因此被廣泛的 使用在不需要電源供應便可維持狀態的顯示器上，例如電 子紙。請參閱第1圖，膽固醇液晶面板1〇主要包括有一 ❿前基板11及後基板15 ’其中後基板15上可塗佈黑漆，並 於兩者之間設置有一膽固醇液晶13，膽固醇液晶13則包 括有複數個膽固醇液晶分子131。當施加在膽固醇液晶13 上的電壓改變時’膽固醇液晶13的排列方式將會隨之改 變，例如膽固醇液晶13可為平面型排列（Planar Texture) 103、焦點圓錐型排列（F〇cal Conic Texture)101 或垂直型排列（Homeotropic Texture)102。 其中平面型排列103及焦點圓錐型排列ιοί皆為穩 恶’換§之，當膽固醇液晶13為平面型排列1 〇3或焦點 4 201027198 圓錐型排列101時，都不需要外加電壓便可以維持原本的 排列狀態。 外界光源L在進入平面型排列103的液晶後，將會因 為膽固醇液晶分子131螺旋節距（pitch)的不同，而使得 部分波長範圍的光源L產生布拉格反射（Bragg reflection)，並成為亮態。反之，當外界光源L進入焦 點圓錐型排列101的液晶後將會穿透，並被後基板15上 所設置的黑漆吸收而成為暗態。 【發明内容】 本發明之主要目的，在於提供一種液晶改良結構，主 要於膽固醇液晶内摻雜染料，並使得膽固醇液晶為指紋型 排列，且其螺旋軸方向具有一定秩序，藉由此一結構將可 以對可見光波長範圍内的光源進行反射。 本發明之次要目的，在於提供一種液晶改良結構，其 中膽固醇液晶以指紋型排列時為亮態，以平面型排列時則 為暗態，藉此液晶改良結構將可以應用在反射式、穿透式 或半反射半穿透式的面板上。 本發明之又一目的，在於提供一種液晶改良結構，主 要是使得膽固醇液晶為指紋型排列，且其螺旋軸方向具有 一定秩序，再利用聚合物凍結該指紋型排列結構，而指紋 型排列及平面型排列皆為穩態，且兩者之間的切換速度較 習用構造快，藉此將有利於提高面板的顯示品質。 本發明之又一目的，在於提供一種液晶改良結構的製 5 201027198 作方法’可㈣高分子單體、膽轉液晶（正型或雙頻液 晶）及染料進行混合，並對膽固醇液晶平面型排列在 .d/p>3/2之情況下施加縱向小電場（約u—)，以形成 .螺旋軸方向垂直配向方向之指紋型排列，再以聚合物柬结 該指紋型排列結構。 本發明之X目的’在於提供—種液晶改良結構的製 作方法，可以將高分子單體、膽固醇液晶（雙頻液晶）及染 料進行混合，並對膽固醇液晶施知 ^, τ _ 饮日日狍加一向頻水平電場，使得 膽固醇液晶表現出負型液晶特多互彬#撕& 土 日日付巴且形成螺旋軸方向具有 一定秩序性的指紋型排列，而德爯准〜，， 叩傻冉進订一如光照或加熱等 固化程序，促使高分子單體聚人為 腥取σ马聚合物以凍結該指紋 型排列結構。若施加縱方向之低頻高電壓脈衝則可讓膽固 醇液晶表現出正型液晶特色並切換為平面型排列，施加縱 方向低頻低電壓脈衝則切換為指紋型排列。 本發明之又一目的，在於提供一種液晶改良結構的製 ❹作方法，可以將膽固醇液晶（負型或雙頻液晶）及染料進行 混合，並對膽固醇液晶施加一水平電場，使得膽固醇液晶 為指紋型排列。若施加縱方向電場或移除水平電場，藉由 基板的水平配向而成為膽固醇液晶平面型排列結構。 為達成上述目的’本發明提供一種液晶改良結構，主 要包括有：一膽固醇液晶，為指紋塑排列，且膽固醇液晶 之螺旋軸方向具有一定的秩序；及一染料，摻雜於膽固醇 液晶内。 此外，本發明尚提供一種液晶改良結構的製作方法， 6 201027198 主要包括有以下步驟：於一膽固醇液晶内摻雜至少一染 料；將該膽固醇液晶與一高分子單體進行混合；將該膽固 .醇液晶切換成為螺旋轴方向具有一定的秩序或朝單一方 向的指紋型排列；及對該高分子單體進行一固化程序，以 形成為一聚合物，並藉此聚合物以凍結該膽固醇液晶之指 紋型排列。 又，本發明尚提供一種液晶改良結構的製作方法，主 要包括有以下步驟：於一膽固醇液晶内摻雜至少一染料； 1將膽固醇液晶及染料放置於一第一基板及一第二基板之 間；將該膽固醇液晶切換成為螺旋軸方向具有一定秩序或 朝單一方向的指紋型排列；及將該膽固醇液晶切換成為平 面型排列。 【實施方式】 請參閱第2圖，為本發明液晶改良結構一較佳實施例 之構造示意圖。如圖所示，本發明所述之液晶改良結構20 包括有一膽固醇液晶21，並於膽固醇液晶21内摻雜有一 染料（Dyes)23，如第2圖所示之斜線部分，膽固醇液晶21 包括有複數個膽固醇液晶分子211，並致使膽固醇液晶21 之螺旋軸方向或排列將具有一定的秩序的指紋型排列 (Fingerprint Texture)，例如將膽固醇液晶分子211的 螺旋轴朝單一方向X1。接續再將該指紋型排列的膽固醇液 晶21藉由一聚合物予以凍結固定。 本發明於膽固醇液晶21内所摻雜的染料23可以是二 7 201027198 色性染料（Dichroic Dyes)，一般而言二色性染料可為在 分子長轴方向具有光吸收特性的P型二色性染料，及在分 _子短轴方向具有光吸收特性的N型二色性染料。染料23 摻雜在膽固醇液晶21内，且染料23和膽固醇液晶分子211 以相互平行的方式排列，藉此染料23的排列將會隨著膽 固醇液晶分子211的運動而改變。 請參閱第3圖，為本發明液晶改良結構在切換時的構 造示意圖。如圖所示，本發明所述之液晶改良結構30包 1括有一第一基板（或稱前基板）311及一第二基板（或稱後 基板）313，並將膽固醇液晶21及染料23設置在第一基板 311及第二基板313之間，而膽固醇液晶21將成為指紋型 排列，其螺旋轴方向具有一定的秩序，例如膽固醇液晶21 包括有複數個膽固醇液晶分子211，且膽固醇液晶分子211 的螺旋軸朝單一方向XI。該指紋型排列的膽固醇液晶21 將藉由一聚合物45予以束結固定。 丨第一基板311上可設置有一第一電極33,而第二基板 313上則設置有一第二電極35，在使用時可藉由第一電極 33及第二電極35供給電壓，並於第一基板311及第二基 板313之間形成電場，藉此電場將可以對膽固醇液晶21 的排列或螺旋軸方向進行改變。 當液晶改良結構30為平面型排列（Planar Texture)303時，由外界進入的外界光源L1及/或背光光 源L3將會被液晶改良結構30内的染料23所吸收並成為 暗態。在應用時，可以對平面型排列303的液晶施加一低 8 201027198 電壓脈衝（Vl)，並使其切換為指紋型排列301。 請同時參閱第4圖，當膽固醇液晶21為指紋型排列 ,301時，由外界進入的光源L1將有部分會被染料23所吸 收，而有部分的光源L1則會穿透指紋型排列301的液晶 並被反射層反射成為亮態。例如偏振方向垂直膽固酵液晶 21螺旋軸方向XI的垂直光X5會被染料23吸收，而偏振 方向平行膽固醇液晶21螺旋軸方向XI的平行光X4則會 穿透液晶，未被染料23所吸收，並被設於第二基板313 β内部或底層之反射層32所反射。 使用時若對指紋型排列301的膽固醇液晶21施加一 高電壓脈衝Vh ’例如一可將膽固醇液晶21從指紋型排列 301切換成為垂直型排列（Homeotropic Texture)302的臨 界電壓（Euw)脈衝’藉此液晶改良結構30將會經由垂直型 排列302後而被切換成平面型排列303，如箭頭S1/S2。 在實際操作下，如果對指紋型排列301的液晶21施 φ加高電壓脈衝Vh後，高電壓脈衝^持續期間將會形成垂直 型排列（Homeotropic Texture)3〇2的液晶，如程序箭頭 S1。而當高電壓脈衝vH被移除或消失之後，液晶改良結構 =將會由垂直型排列302切換為平面型排列3〇3，如程序 箭頭S2。由於垂直型排列3〇2 一般係非穩態，因此，垂直 型排列302也可被稱為一過渡程序。 又如果對膽固醇液晶21施力口一低電壓脈衝如 程序箭頭S3 ’則液晶改良結構3〇又可從平面型排列· 切換為指紋型排列301。 9 201027198 平面型排列303及指紋型排列301皆為穩態，因此當 液晶改良結構30切換為平面型排列303或指紋型排列301 .後便不需要繼續供給電壓，並可長時間維持在平面型排列 303或指紋型排列301。 由於平面型排列303為暗態，指紋型排列301為亮 態，因此本發明所述之液晶改良結構30可使用在反射式、 穿透式或半反射半穿透式的面板上，並可以對可見光波長 範圍内的光源進行反射。例如在第4圖中，指紋型排列 β 301，其第二基板313底層設有一部分畫素區域之反射層 32，而另一部分晝素區域為背光光源L3可以穿透的透明 層，因此此指紋型排列30即為一半反射半穿透式之液晶 結構。 如果第二基板313底層只有背光光源L3而無反射層 32，則此結構即為一穿透式液晶結構。又，如果第二基板 313底層只有反射層32而無背光光源L3，則此結構即為 @ —反射式液晶結構 背光光源L3至少包括有平行XI之平行光Χ4及垂直 XI之垂直光Χ5。當背光光源L3從第二基板313射入液晶 21時，則有平行光Χ4可穿透，而垂直光Χ5則會被吸收， 因此穿透光L4就只有平行光Χ4。 外界光源L1也同樣具有平行XI之平行光Χ4及垂直 XI之垂直光Χ5，當外界光源L1從第一基板311入射時， 垂直光Χ5將會被吸收，而平行光Χ4將可到達第二基板 313，如入射光L12，再藉由設於第二基板313上内部、表 201027198 面或底層之反射層32反射，以成為一反射光L2。反射光 L2存在有平行光X4，而反射光L2將可穿透液晶21以反 .射出去。 外界光源L1在穿透指紋型排列301的膽固醇液晶21 後，將會被反射層32所反射，並使得液晶改良結構為亮 態。此外相較於習用膽固醇液晶面板（10)以平面型排列及 焦點圓錐型排列為雙穩態之構造而言，本發明之穩態主要 是藉由平面型排列303及指紋型排列301之間的切換動作 ®而成，因此可提高切換的速度以提高顯示的品質。 請參閱第5圖，為本發明液晶改良結構又一實施例之 構造示意圖。如圖所示，本發明所述之液晶改良結構40 包括有一第一基板311及第二基板313,並於第一基板311 上設置有至少一第一電極33,第二基板313上則依序設置 有至少一第二電極35及至少一第三電極47。其中第二電 極35及第三電極47之間還設置有一絕緣層46,且第三電 參極47為一共平面電極，而膽固醇液晶21及染料23則設 置在第一基板311及第二基板313之間。 在此本發明實施例中，膽固醇液晶21可為一雙頻液 晶（Dual Frequency LC)，雙頻液晶在低頻電壓下會表現 出正型液晶特性，而在高頻電壓下則會表現出螺旋軸跟水 平電場平行之負型液晶特性。因此在應用時可將膽固醇液 晶21(雙頻液晶）及染料23設置於第一基板311及第二基 板313之間’並透過第二電極47所形成的南頻水平電場E 使得膽固醇液晶21成為指紋型排列，且膽固醇液晶21的 11 201027198 螺旋軸朝單一方向或螺旋軸方向具有一定的秩序。 在實際製作時可將膽固醇液晶21與一高分子單體 .(monomer，例如BAB6) 25混合，並進行聚合以涞結指紋 型排列，之後再透過第一電極33及第二電極35之間的低 頻電場來改變膽固醇液晶21的排列方式。對第一電極33 及第二電極35輸入一縱向高電壓脈衝，例如一縱向低頻 高電壓脈衝，便可以將膽固醇液晶21切換為平面型排列； 若對第一電極33及第二電極35再輸入一縱向低電壓脈 β衝，例如一縱向低頻低電壓脈衝，則會將膽固醇液晶21 切換為指紋型排列。 在製作時主要於一膽固醇液晶21内摻雜至少一染料 23 ;再將膽固醇液晶21與一高分子單體25進行混合；並 使得膽固醇液晶21為螺旋轴具有一定秩序或朝單一方向 的指紋型排列；最後再對高分子單體25進行一光照或加 熱等固化程序，以凍結膽固醇液晶21，例如使其維持在指 參紋型排列結構。 在本發明一實施例中，高分子單體25被進行一光照 或加熱等固化程序後，將致使高分子單體成為一聚合物 45，並以該聚合物以凍結膽固醇液晶21的結構。 由於本發明之膽固醇液晶21將成為指紋型排列，其 螺旋軸方向具有一定的秩序性或單一方向，且將藉由高分 子單體25所形成之聚合物45以凍結指紋型排列，因此即 便之後不再以第三電極47來形成水平電場Ε，膽固醇液晶 21依然會維持其指紋型排列。 12 201027198 前述各實施例之高電壓脈衝或低電壓脈衝皆為在膽 固醇液晶領域專業人士所能極易思及之用詞，例如公開刊 載於（http://osdlab· eic. nctu. edu. tw/LC/data/ issues/2004_l/05. pdf ):中國液態晶體學會簡訊一2004 年第一期（2004年06月）一膽固醇型液晶電子書 (E-Book)，因此在本發明中不對高電壓脈衝及低電壓脈衝 進行詳盡之定義或說明。 請參閱第6圖，為本發明液晶改良結構又一實施例之 φ 構造示意圖。如圖所示，本發明所述之液晶改良結構50 包括有一第一基板311及第二基板313，第二基板313上 設置有至少一第三電極47,並於第一基板311及第二基板 313之間設置膽固醇液晶21及染料23。 在此本發明實施例中，膽固醇液晶21為一負型液晶， 而藉由第三電極47來產生一與第一基板311及/或第二基 板313呈現水平的水平電場E時，將使得膽固醇液晶21 參成為一螺旋軸具有一定秩序或朝單一方向的指紋型排 列。而當第二電極47所形成水平電場E被移除後，膽固 醇液晶21便會因為第一基板311及第二基板313的水平 配向而成為平面型排列結構。 當然在實際應用時亦可以選擇在第一基板311上設置 有至少:第一電極33,而在第二基板313上則設置有至少 -第二電極35,並有-絕緣層46介於第二電極35與第三 電極47之間。當第—電極33及第二電極35之間形成或 施加一縱向電場E1時，也可以使得膽固醇液晶21成為平 13 201027198 面型排列，藉此將有利於膽固醇液晶21之結構排列形態 轉換速度的提高。 . 為此，第一電極33、第二電極35及/或第三電極47 的設置與否將可依據膽固醇液晶21的特性來進行調整或 改變。 請參閱第7圖，為本發明液晶改良結構一實施例的部 分構造俯視圖。本發明前述第5圖及第6圖所示之第三電 極47係可以一長條狀的方式設置，相鄰兩兩第三電極47 ®將相互平行，藉此膽固醇液晶21的螺旋軸將會朝單一方 向，如第7圖所示之第一方向XI。 在本發明又一實施例中，第三電極47也可以如第8 圖所示之「<」狀、或如第9圖所示之波浪狀、或第1 0 圖所示之螺旋狀或多角形的方式設置，膽固醇液晶21之 螺旋軸方向將會具有一定的秩序，但並不會全部朝同一個 單一方向，有部分膽固醇液晶21的螺旋軸朝向第二方向 X2,而有部分膽固醇液晶21的螺旋軸則會朝第三方向X3。 本實施例中，膽固醇液晶21之螺旋轴方向具有一定 的秩序，但並不是只有單一方向X2或單一方向X3，與第 7圖所示實施例中只有單一方向XI之態樣並不相同。以 單一晝素來看，雖然螺旋軸方向並非朝向單一方向，但以 晝素之部分區域來看，螺旋軸方向仍然是具有單一方向， 因此，膽固醇液晶21之螺旋軸方向具有一定的秩序。 請參閱第1 1圖，為本發明液晶改良結構又一實施例 之構造示意圖。如圖所示，本發明所述之液晶改良結構60 14 201027198 包括有一第一基板311及第二基板313,並於第一基板311 上設置有至少一第一電極33,第二基板313上則設置有至 .少一第二電極35，而具有正型液晶特色之膽固醇液晶21 及染料23則設置在第一基板311及第二基板313之間。 在應用時，於形成第一電極33及第二電極35後，將 在第一電極33/第二電極35及/或第一基板311/第二基板 313表面進行互為平行或反平行之水平配向處理，如圖式 X6。再藉由第一電極33及第二電極35對膽固醇液晶21 ®之平面型排列結構施加一縱向小電場E2,例如在d/p>3/2 (d為面板間距，p為膽固醇液晶螺距）且平面型排列303 之狀況條件下，對膽固醇液晶21施加約為0.3V/um的縱 向小電場E2，藉此可使得膽固醇液晶21成為螺旋軸垂直 於水平配向方向X6的指紋型排列301，再藉由高分子單體 所形成的聚合物65將膽固醇液晶21凍結於指紋型排列結 構 3(H。 φ 在應用時，可以對第一電極33及第二電極35輸入一 高電壓脈衝，將使得膽固醇液晶21從指紋型排列301切 換為平面型排列303。若對第一電極33及第二電極35再 輸入一低電壓脈衝時，又可使得膽固醇液晶21從平面型 排列303切換為指紋型排列301，如第3圖所示之程序 S1/S2/S3 。 在本發明又一實施例中，正型液晶亦可使用一雙頻液 晶配合一低頻電壓，使其表現正型液晶特色。同理，負型 液晶亦可使用雙頻液晶配合一高頻電壓，使其表現負型液 15 201027198 晶特色。 接續，請參閱第1 2 A圖’係為本發明又一實施例在 切換時之構造示意圖。本發明液晶改良結構70亦可適用 於掺雜有大量高分子單體之高分子分布型膽固醇液晶結 構（Polymer Dispersed Cholesteric Liquid Crystal ; PDCLC) ’主要係將膽固醇液晶21内捧雜有至少·—染料23， 並與一高分子單體（25)混合，且需調控液晶/高分子單體 (CLC/monomer)重量比。 將調配好之膽固醇液晶21、染料23及高分子單體（25) 放置於第一基板311及第二基板313之間。對高分子單體 (25)及膽固醇液晶21進行一光照或加熱等固化程序，以 形成一聚合物45及複數個液晶滴（droplet)71，聚合物45 將包覆液晶滴71，而液晶滴71内則存在有膽固醇液晶21 及染料23。 如果在形成條件搭配適宜下，例如搭配配向、液晶/ ❹高分子重量比、光照/加熱等固化程序及/或液晶滴尺寸遠 大於液晶螺距等形成條件，膽固醇液晶21及染料23將在 液晶滴21内形成一球石狀（spherulite)排列304。 在本發明一實施例中，其膽固醇液晶21係可為一負 型液晶或一可表現負型特色之雙頻液晶，例如一 E7液晶。 高分子單體（25)可選用一 N0A65材料，而液晶/高分子單 體重量比則調控為1:1，藉此以形成球石狀之液晶排列 304。 在第一基板311及第二基板313之間輸入一水平電場 16 201027198 E，例士藉由第二電極47所形成之水平電場E，可將球石 狀^膽固醇液晶21及染料23從球石狀排列304切換為指 .纹^排列301 ’而指紋型排列301之膽固醇液晶21將具有 定的秩序或朝單一方向之螺旋轴。 如果再移除水平電場E，則位於液晶滴71内之膽固醇 液晶21又可從指紋型排列301切換為球石狀排列304。因 此可藉由水平電場E之存在與否以決定液晶改良結構70 之暗亮態樣。例如球石狀排列304係為暗態，而指紋型排 ❺列301係為亮態。 在本發明又一實施例中，如第1 2 B圖所示，如果膽 固醇液晶21係為一正塑液晶或一可表現正型特色之雙頻 液晶’第一基板311及第二基板313之間輸入一縱向電場 E1，例如由第一電極33及第二電極35所形成之縱向電場 E1，則球石狀排列304之膽固醇液晶21及染料23將被切 換為指紋型排列301。因此可藉由縱向電場E1之存在與否 參以決定液晶改良結構70之暗亮態樣。例如指紋型排列301 係為亮態，而球石狀排列304係為暗態。 請參閱第1 3 A圖’係為本發明又一實施例在切換時 之構造示意圖，本發明液晶改良結構80可適用於微膠囊 膽固醇液晶結構。利用一已被热知之微膠囊製程技術’例 如類似電泳顯示器製作微膠囊的技術’可形成複數個微膠 囊液晶滴72，而微膠囊液晶滴72主要係利用一微膠囊外 殼層77以包覆膽固醇液晶21及染料23’並形成球石狀排 列304。而膽固醇液晶21係可選用負型液晶或可表現負型 17 201027198 液晶特色之雙頻液晶。 同理，可藉由水平電場E之存在與否以決定液晶改良 .結構80之暗亮態樣。例如沒有水平電場E存在時之球石 狀排列304係為暗態，而有水平電場E存在時之指紋型排 列301係為亮態。 當然，如第1 3 B圖所示，如果膽固醇液晶21係為 一正型液晶或一可表現正型特色之雙頻液晶，也可藉由縱 向電場E1之存在與否以決定液晶改良結構80之暗亮態 ®樣。例如有縱向電場E1存在時之指紋型排列301係為亮 態，而沒有縱向電場E1存在時之球石狀排列304係為暗 態。 另外，請參閱第1 4圖，係本發明又一實施例在切換 時之構造示意圖，本實施例液晶改良結構90類似前述第 3圖所示實施例，將雙頻液晶21、染料23混合後放置於 第一基板311及第二基板313之間。 φ 當第一電極33及第二電極35之間產生一縱向電場E2 時，液晶改良結構90將成為焦點圓錐型排列305，表現出 正型液晶特色。經由輸入之一高電壓（Vh)而將膽固醇液晶 21切換為垂直型排列302(Vh持續供給期間），如箭頭S1， 或輸入一高電壓脈衝（Vn)而切換成平面型排列303，如箭 頭S1/S2。又，輸入一縱向低電壓脈衝（Vl)時，平面型排 列303之液晶改良結構90又可切換回焦點圓錐型排列 305，如箭頭S3。 而在平面型排列303、垂直型排列302或焦點圓錐型 18 201027198 排列305時’若輸入第三電場47所形成之水平電場e，雙 頻液晶21將表現出負型液晶特色，以致使膽固醇液晶21 .成為螺旋軸具有-定秩序或朝單—方向的指紋型排列 3(H，指紋塑排列301係為—亮態，如箭頭以或沾。 藉由染料23及/或膽固醇液晶2丨種類之選擇，指紋 型排列3〇1、平面型排列303或焦點圓錐型排列3〇5之亮 暗態可搭配設計。 請參閱第1 5® ’係本發明n施狀構造示意 參圖，本發明液晶改良結構1〇〇主要係在第一基板311上分 別設有一偏光板91及一第四電極475，第二基板313上則 設有第三電極47 ’第四電極475將與f三電極47形成隔 空相互交錯垂直態樣，且第四電極475及第三電極47都 個別為一共平面電極。 於此實施例中，偏光板91之通過轴方向χ6為入射紙 面，而外界光源L1具有平行X軸之水平光14及垂直光χ5, 垂直光Χ5與通過轴方向Χ6同方向。 ❹ 當第 > 電極47形成水平電場Ε：時，液晶改良結構1 〇〇 之膽固醇液晶21即可從平面型排列（3〇3)切換成（第一）指 紋型排列301 ’膽固醇液晶21之螺旋軸具有一定秩序或朝 單一方向XI。外界光源L1在通過偏光板91時，外界光源 之水平光Χ4將被濾除，僅允許指向紙面之垂直光χ5通 過，以形成入射光L12。入射光L12將被染料23所吸收或 散射，不會形成反射光（L2) ’因此，在（第一）指紋型排列 301係為暗態。 19 201027198 當弟二電極4 7之水平帝* p 十电％ E消失時，液晶改良結構 100之膽固醇液晶21又可你昝 , 從第一指紋型排列301切換成平 .面型排列（303)。 當第四電極475形成第二水平電場E3時，液晶改良 結構100之膽固醇液晶21可從平面型排列（_切換成第 二指=型排歹《I 306,膽固醇液晶21之螺旋軸具有一定秩序 或朝單一方向X6(指向紙面）。外界光源L1在通過偏光板 ⑩91時’同樣僅允許指向紙面之垂直光χ5通過，以形成入 射光L12。而具有χ5方向之入射光[12將可通過膽固醇液 晶21及染料23，並被反射鏡32反射以形成一反射光L2， 因此’在第二指紋型排列306係為亮態。 同理，當第四電極475之第二水平電場E13消失時， 液晶改良結構1〇〇之膽固醇液晶21又可從第二指紋型排 列306切換成平面型排列（3〇3)。 藉由第三電極47所形成之（第一）水平電場E或第四 ❿電極475所形成之第二水平電場£3,即可決定膽固醇液晶 21之螺旋軸方向，係成為一與偏光板91之通過軸方向相 互垂直之暗態，或一與偏光板91之通過軸方向相互水平 之亮態。 於本發明又一實施例中’亦可藉由聚合物45之形成 以凍結固定住第一指紋型排列3〇1或第二型指紋型排列 306，再選擇係由第三電極47或第四電極475來產生橫向 ^水平電場E或E3(如第；l 7 B圖所示），以改變膽固醇液 晶21之螺旋軸方向，如此也可以產生液晶改良結構1〇〇 201027198 之暗亮態。 例如以聚合物45凍結固定第一指紋型排列301，並致 .使第一指紋型排列301之螺旋轴方向與偏光板91之通過 軸方向垂直，以成為暗態。藉由第四電極475所形成之第 二水平電場E3,則可讓膽固醇液晶21之螺旋軸選轉90 度，以與偏光板91之通過軸方向同方向，以成為第二指 紋型排列306之亮態。而第二水平電場E3移除消失時， 又可將膽固醇液晶21從第二指紋型排列306切換回暗態 ®之第一型指紋型排列301。 於本發明又一實施例中，第一指紋型排列301 (或第二 型指紋型排列306)亦可適用於如第1 1圖所示之方法，即 是以雙頻液晶21先經由縱向小電場E2及配向處理以形成 指紋型排列301後，再經過一固化程序以聚合物45凍結 固定第一指紋型排列301。接續，再利用第四電極475來 改變雙頻液晶21切換為第二型指紋型排列306,藉此同樣 @可達到配合偏光板91以切換液晶改良結構100暗亮態之 目的。 在此實施例中，第一電極（33)及第二電極（35)必須存 在，但第三電極47及第四電極475則只需選擇其一存在 即可。當然，若第一基板311上若設有第一電極（33)，則 第一電極（33)與第四電極475之間也會存在有一絕緣層。 請參閱第1 6圖，係為本發明又一實施例之構造示意 圖，於第一基板311及第二基板313之間相距有一間隔厚 度d。如果液晶改良結構110在第二型指紋型排列306時， 21 201027198 其外界光源L1或背光光源L3之通過軸與膽固醇液晶21 之螺旋軸方向平行（或稱同方向），則外界光源L1或背光 .光源L3將可反射或穿透，以致使液晶改良結構110在第 二型指紋型排列306係為亮態。 當第三電極47產生橫向水平電場E時，接近第三電 極47之膽固醇液晶分子213將形成螺旋軸朝向XI，且與 水平電場E平行之第一指紋型排列（301)，而遠離第三電 場47之膽固醇液晶分子215由於厚度d之加寬，因此將 β不受水平電場E影響，還是維持第二型指紋型排列306， 以成為一第三型指紋型排列307。第三型指紋型排列307 中的膽固醇液晶分子213及膽固醇液晶分子215之螺旋軸 將相互垂直，不管係外界光源L1或背光光源L3將被膽固 醇液晶21及/或染料23所吸收，因此第三型指紋型排列 307將成為一暗態。 如果移除水平電場Ε，由於第二型指紋型排列306已 參被一聚合物45予以凍結固定，因此液晶改良結構110又 可從第三型指紋型排列307切換回亮態之第二型指紋型排 列306。膽固醇液晶21係可選用負型液晶或具有液晶特色 之雙頻液晶。 圖式中，介於膽固醇液晶213與膽固醇液晶215之間 的膽固醇液晶217由於將受到水平電場Ε之部分影響，因 此其螺旋軸Χ7將轉一角度，例如45度。 又，請參閱第17Α圖及第17Β圖，係分別為本發 明又一實施例之構造示意圖及第三電極47/第四電極475 22 201027198 之俯視圖，液晶改良結構12 0可藉由前述實施例所陳迷之 製作方法以形成一指紋型排列，例如第二指紋型排列 .306，係為一亮態。而當設於第一基板311之第四電極‘π 產生橫向第二水平電場Ε3,且設於第二基板313之第三電 極47也同時產生（第一）水平電場ε時，鄰近之膽固醇液 晶分子215/213將受到影響’而形成膽固醇液晶分子 215/213之螺旋轴相互垂直之第三指紋型排列3〇7，則為 一暗態。 ® 第四電極475與第三電極47 —樣係為一共平面電 極’且第四電極475也可為為一長條狀、一 r <」狀、一 波浪狀、一多角形或一螺旋狀。 在此實施例中，可藉由第四電極475產生橫向第二水 平電場Ε3以維持第二指紋型排列3〇6之亮態，再藉由第 三電極47之（第一）水平電場Ε之存在與否以決定是否形 成第三指紋型排列307之暗態。 眷 在另一實施例中’亦可利用聚合物45先凍結固定第 二指紋型排列306之亮態，再藉由第三電極47之（第一） 水平電場Ε之存在與否以決定是否形成第三指紋型排列 307之暗態。 本實施例亦可與前述之偏光板（91)搭配使用，利用第 二指紋型排列306及第三指紋型排列307間之切換以決定 光線是否可通過偏光板（91)之通過轴，相對也可改變液晶 改良結構120之暗亮態樣。 另外，請參閱第1 8圖，係為本發明又一實施例之構 23 201027198 造示意圖。本發明液晶改良結構130主要係在第一基板311 上設有一第一電極33，第一電極33上設有至少一突出物 (bump)93及/或至少一隙缝（slit)95，而第二基板313上 則設有一第二電極35。 當第一電極33及第二電極35間產生一縱向電場（E4) 時，由於突出物93及/或隙缝95之作用，將影響縱向電 場形成為·一斜向電場E4 ’斜向電場E4將有近似水平電場 (E)之性質，而膽固醇液晶21及染料23也相對受到影響 ®而改變其螺旋軸，以致使液晶改良結構130將從平面型排 列303切換成第四指紋形排列308。也因此可改變液晶改 良結構130之暗亮態樣。 當然，如果移除斜向電場E4後，液晶改良結構130 又可從第四指紋形排列308之亮態切換為平面型排列303 之暗態。 本實施例亦可與前述之偏光板（91)搭配使用，利用平 參面型排列303及第四指紋形排列308間之切換以決定光線 是否可通過偏光板（91)之通過軸，相對也可改變液晶改良 結構130之暗亮態樣。 請參閱第1 9圖，係為本發明又一實施例在切換時之 構造示意圖，本發明液晶改良結構140在藉由斜向電場E4 以形成第四指紋型排列308時，可利用高分子單體所形成 之聚合物45以凍結固定該第四指紋型排列308結構，為 一亮態。之後再利用第一電極33及第二電極（35)間之高 電壓脈衝及/或低電壓脈衝，以作為第四指紋型排列308、 24 201027198 平面型排列303或垂直型排列302之切換，藉此以獲得液 晶改良結構140之暗/亮態或雙穩態之間的切換。 於本發明又一實施例中，其第二電極（35)也可由第三 電極或畫素電極47所取代，而第三電極47或第二電極（35) 上也可形成有一隙縫955或一突出物935，同樣可達到產 生斜向電場E4之目的。 又，突出物93/935及/或隙縫95/955係可為一圓環、 一同心圓或一多角形者。 最後，請參閱第2 0圖，係為本發明又一實施例之構 造示意圖，本發明液晶改良結構150亦可將膽固醇液晶21 先行加熱處理至等向性（isotropic)液態後再降溫，以致 使每一個膽固醇液晶21之螺旋軸雖然還是平行第一基板 311或第二基板313，但螺旋軸方向並不相同或有一定秩 序，例如XI、X5及X7，以形成一第五指紋型排列309， 係為暗態。 再利用聚合物45以凍結固定第五指紋型排列309 後，利用第三電極47所產生之水平電場E即可將液晶改 良結構150切換成第一指紋型排列301之亮態。如果再移 除水平電場E，又可切換回暗態之第五指紋型排列309。 如此同樣可達到切換本發明液晶改良結構150亮暗態之目 的。 當然，在本發明又一實施例中，膽固醇液晶係為正型 液晶或具有正型液晶特色之雙頻液晶時，當聚合物45以 凍結固定第五指紋型排列309後，可剞用一縱向小電場， 25 201027198 同樣可將液晶改良結構150切換成第一指紋型排列301之 亮態。 . 以上所述者，僅為本發明之較佳實施例而已，並非用 來限定本發明實施之範圍，例如正型液晶、雙頻液晶、負 型液晶或染料材料之搭配選擇來改變暗亮態等變化，即凡 依本發明申請專利範圍所述之形狀、構造、特徵及精神所 為之均等變化與修飾，均應包括於本發明之申請專利範圍 内。 【圖式簡單說明】 第1圖：為習用習用膽固醇液晶面板的構造示意圖。 第2圖：為本發明液晶改良結構一較佳實施例之構造示意 圖。 第3圖.為本發明液晶改良結構在切換時的構造不意圖。 第4圖：為本發明液晶改良結構又一實施例之構造示意 圖。 第5圖：為本發明液晶改良結構又一實施例之構造示意 圖。 第6圖：為本發明液晶改良結構又一實施例之構造示意 圖。 第7圖：為本發明液晶改良結構一實施例的部分構造俯視 圖。 第8圖：為本發明液晶改良結構一實施例的部分構造俯視 圖。 26 201027198 第9圖.為本發明液晶改良結構—實施例的部分構造俯視 圖。 第1 0圖：為本發明液晶改良結構一實施例的部分構造俯 視圖。 第11圖：為本發明液晶改良結構又一實施例之構造示意 圖。 第1 2 A圖：為本發明液晶改良結構又一實施例之構造示 意圖。 ⑩第1 2 B圖：為本發明液晶改良結構又一實施例之構造示 意圖。 第1 3 A圖：為本發明液晶改良結構又一實施例之構造示 意圖。 第1 3 B圖：為本發明液晶改良結構又一實施例之構造示 意圖。 第1 4圖：為本發明液晶改良結構又一實施例在切換時之 構造示意圖。 ❹第1 5圖：為本發明液晶改良結構又一實施例之構造示意 圖。 第1 6圖：為本發明液晶改良結構又一實施例之構造示意 圖。 第1 7 A圖：為本發明液晶改良結構又一實施例之構造示 意圖。 第1 7 B圖：為本發明如第1 7 A圖所示實施例之部分構 件俯視圖。 第1 8圖：為本發明液晶改良結構又一實施例之構造示意 27 201027198 圖。 第1 9圖：為本發明液晶改良結構又一實施例在切換時之 構造不意圖。 第2 0圖：為本發明液晶改良結構又一實施例之構造示意 圖。201027198 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a liquid crystal improved structure and a manufacturing method thereof, which can mainly reflect light sources in a visible wavelength range, and can also be applied to reflection and penetration. Or semi-reflective semi-transmissive panels. [Prior Art] 物质 Substances that are generally found in nature can mainly distinguish between gaseous, liquid, and solid. These states can be transformed into each other under certain conditions, such as changes in temperature or pressure, which is what we generally call phase changes. For most substances, when a phase change occurs, only one phase changes to another phase, for example, from a solid state to a liquid state, and there is no intermediate transition zone in the phase change process. However, after some substances are heated and melted, their phase changes do not directly change from solid to liquid. These materials still have some regularity after losing some solid properties, commonly referred to as liquid crystal (LC). The substance in this state has both a certain degree of regular arrangement of solid crystals and a certain degree of fluidity of the liquid. Because of this special nature, the application of liquid crystal materials is very important and extensive. At present, the liquid crystals frequently used in the industry mainly include the following: smectic liquid crystal (smect ic LC): This type of liquid crystal is a rod-shaped molecule arranged in a layered structure, each molecule being perpendicular to the layer or having an oblique angle, and The molecules formed are arranged in parallel with each other. Nematic LC (nematic LC): Nematic liquid crystals are also rod-like molecules arranged in parallel with 3 201027198. Their molecular axis directions remain parallel, but they do not have a layered liquid crystal layered structure, only one-dimensional rules. degree. It has optical positive refractive properties. Compared with smectic liquid crystals, the liquid crystal molecules are easy to move freely in the long axis direction, so their intermolecular forces are small, the viscosity is small, and they are easy to slide. Among them, the most liquid, is the most important and most widely used among LCD members. Cholesterol LC: Cholesterol-type liquid crystals basically have asymmetric carbon atoms. The liquid crystal composed of such molecules has molecular chains arranged in parallel, and the layers and layers are parallel to each other. In each layer, the molecules have a nematic type which are generally aligned in the same direction, and the major axis and the layer are parallel. Between the adjacent two layers, the long axis direction of the molecules is regularly rotated by a certain angle, and the layers are rotated to form a spiral structure. Since cholesteric liquid crystals have bistable characteristics, they are widely used in displays that maintain state without requiring a power supply, such as electronic paper. Referring to FIG. 1 , the cholesteric liquid crystal panel 1 〇 mainly includes a front substrate 11 and a rear substrate 15 ′, wherein the rear substrate 15 can be coated with black lacquer, and a cholesteric liquid crystal 13 is disposed between the two, and the cholesteric liquid crystal 13 is disposed. A plurality of cholesteric liquid crystal molecules 131 are included. When the voltage applied to the cholesteric liquid crystal 13 changes, the arrangement of the cholesteric liquid crystal 13 will change accordingly. For example, the cholesteric liquid crystal 13 may be a Planar Texture 103 or a F圆锥cal Conic Texture. 101 or Homeotropic Texture 102. The planar arrangement 103 and the focal conic arrangement ιοί are all stable and versatile. When the cholesteric liquid crystal 13 is in a planar arrangement 1 〇 3 or a focus 4 201027198 conical arrangement 101, the original voltage is not required to maintain the original Arrangement status. After entering the liquid crystal of the planar array 103, the external light source L will cause the Bragg reflection of the light source L in a part of the wavelength range to become a bright state due to the difference in the pitch of the cholesteric liquid crystal molecules 131. On the other hand, when the external light source L enters the liquid crystal of the focal conic arrangement 101, it will penetrate and be absorbed by the black paint provided on the rear substrate 15 to become a dark state. SUMMARY OF THE INVENTION The main object of the present invention is to provide a liquid crystal improved structure, which is mainly doped with a dye in a cholesteric liquid crystal, and causes the cholesteric liquid crystal to be in a fingerprint type arrangement, and the direction of the spiral axis has a certain order, by which a structure The light source in the visible wavelength range can be reflected. A secondary object of the present invention is to provide a liquid crystal improved structure in which a cholesteric liquid crystal is in a bright state when arranged in a fingerprint type, and a dark state in a planar arrangement, whereby the liquid crystal improved structure can be applied to reflection and penetration. Or semi-reflective semi-transmissive panels. Another object of the present invention is to provide a liquid crystal improved structure, which mainly makes the cholesteric liquid crystals have a fingerprint type arrangement, and the spiral axis direction has a certain order, and then the fingerprint type structure is frozen by the polymer, and the fingerprint type arrangement and the plane are arranged. The type arrangement is steady state, and the switching speed between the two is faster than the conventional structure, thereby facilitating the display quality of the panel. Another object of the present invention is to provide a liquid crystal improved structure 5 201027198 as a method of "four (4) polymer monomer, bile liquid crystal (positive or dual frequency liquid crystal) and dye mixing, and cholesteric liquid crystal planar arrangement In the case of .d/p > 3/2, a longitudinal small electric field (about u-) is applied to form a fingerprint-type arrangement in the direction perpendicular to the direction of the helical axis, and then the fingerprint-type arrangement is polymer-bonded. The X object of the present invention is to provide a method for producing a liquid crystal improved structure, which can mix a polymer monomer, a cholesteric liquid crystal (dual-frequency liquid crystal) and a dye, and know the cholesteric liquid crystal, τ _ 饮日日狍Adding a horizontal frequency horizontal electric field, so that the cholesteric liquid crystal exhibits a negative-type liquid crystal, and it is a kind of fingerprint-type arrangement in which the direction of the spiral axis has a certain order, and the German-style 〜~,, 叩 冉 冉A curing procedure such as light or heating is applied to cause the polymer monomer to gather to extract the Sigma horse polymer to freeze the fingerprint type alignment structure. If a low-frequency high-voltage pulse in the longitudinal direction is applied, the cholesteric liquid crystal exhibits a positive liquid crystal characteristic and is switched to a planar arrangement, and a vertical low-frequency low-voltage pulse is applied to switch to a fingerprint type arrangement. Another object of the present invention is to provide a method for preparing a liquid crystal improved structure, which can mix cholesteric liquid crystal (negative or dual-frequency liquid crystal) and a dye, and apply a horizontal electric field to the cholesteric liquid crystal, so that the cholesteric liquid crystal is a fingerprint. Type arrangement. When a longitudinal electric field is applied or a horizontal electric field is removed, a cholesteric liquid crystal planar arrangement is formed by horizontal alignment of the substrate. In order to achieve the above object, the present invention provides a liquid crystal improved structure, which mainly comprises: a cholesteric liquid crystal which is arranged in a fingerprint and has a certain order in the direction of the spiral axis of the cholesteric liquid crystal; and a dye which is doped in the liquid crystal of cholesterol. In addition, the present invention further provides a method for fabricating a liquid crystal improved structure, 6 201027198 mainly includes the steps of: doping at least one dye into a cholesteric liquid crystal; mixing the cholesteric liquid crystal with a polymer monomer; The alcohol liquid crystal is switched to have a certain order in the direction of the spiral axis or a fingerprint type arrangement in a single direction; and a curing process is performed on the polymer monomer to form a polymer, and the polymer is used to freeze the cholesterol liquid crystal The fingerprint type arrangement. Moreover, the present invention further provides a method for fabricating a liquid crystal improved structure, which mainly includes the steps of: doping at least one dye into a cholesteric liquid crystal; and placing a cholesteric liquid crystal and a dye between a first substrate and a second substrate; The cholesteric liquid crystal is switched to have a certain order in the direction of the spiral axis or a fingerprint type arrangement in a single direction; and the cholesteric liquid crystal is switched to a planar arrangement. [Embodiment] Please refer to Fig. 2, which is a schematic view showing the structure of a liquid crystal improved structure according to a preferred embodiment of the present invention. As shown in the figure, the liquid crystal improving structure 20 of the present invention comprises a cholesteric liquid crystal 21, and is doped with a dye (Dyes) 23 in the cholesteric liquid crystal 21, as shown in the oblique line portion shown in FIG. 2, and the cholesteric liquid crystal 21 includes The plurality of cholesteric liquid crystal molecules 211 are caused to cause a spiral axis direction or arrangement of the cholesteric liquid crystal 21 to have a certain order of fingerprint pattern, for example, the spiral axis of the cholesteric liquid crystal molecules 211 is directed to a single direction X1. The fingerprint-type cholesterol liquid crystal 21 is then freeze-fixed by a polymer. The dye 23 doped in the cholesteric liquid crystal 21 of the present invention may be two 7 201027198 Dichroic Dyes. Generally, the dichroic dye may be a P-type dichroic having light absorption characteristics in the long axis direction of the molecule. A dye, and an N-type dichroic dye having light absorption characteristics in the short-axis direction of the sub-sub. The dye 23 is doped in the cholesteric liquid crystal 21, and the dye 23 and the cholesteric liquid crystal molecule 211 are arranged in parallel with each other, whereby the arrangement of the dye 23 will change with the movement of the cholesteric liquid crystal molecule 211. Please refer to Fig. 3, which is a schematic view showing the structure of the liquid crystal improved structure of the present invention at the time of switching. As shown in the figure, the liquid crystal improving structure 30 of the present invention includes a first substrate (or front substrate) 311 and a second substrate (or rear substrate) 313, and the cholesteric liquid crystal 21 and the dye 23 are disposed. Between the first substrate 311 and the second substrate 313, the cholesteric liquid crystal 21 will be a fingerprint type arrangement having a certain order in the direction of the spiral axis. For example, the cholesteric liquid crystal 21 includes a plurality of cholesteric liquid crystal molecules 211, and the cholesteric liquid crystal molecules 211 The spiral axis is oriented in a single direction XI. The fingerprint-type cholesteric liquid crystal 21 will be bundled and fixed by a polymer 45. A first electrode 33 may be disposed on the first substrate 311, and a second electrode 35 is disposed on the second substrate 313. The voltage is supplied by the first electrode 33 and the second electrode 35 during use. An electric field is formed between the substrate 311 and the second substrate 313, whereby the electric field can change the alignment of the cholesteric liquid crystal 21 or the direction of the helical axis. When the liquid crystal improving structure 30 is a Planar Texture 303, the external light source L1 and/or the backlight light source L3 entering from the outside will be absorbed by the dye 23 in the liquid crystal improving structure 30 and become a dark state. In application, a low voltage 201027198 voltage pulse (Vl) can be applied to the liquid crystal of the planar arrangement 303 and switched to a fingerprint pattern arrangement 301. Please also refer to FIG. 4, when the cholesteric liquid crystal 21 is in a fingerprint type arrangement, when 301, a part of the light source L1 entering from the outside will be absorbed by the dye 23, and a part of the light source L1 will penetrate the fingerprint type arrangement 301. The liquid crystal is reflected by the reflective layer to a bright state. For example, the vertical light X5 whose polarization direction is perpendicular to the helical axis direction XI of the cholesteric liquid crystal 21 is absorbed by the dye 23, and the parallel light X4 whose polarization direction is parallel to the helical axis direction XI of the cholesteric liquid crystal 21 penetrates the liquid crystal and is not absorbed by the dye 23. And reflected by the reflective layer 32 disposed inside or under the second substrate 313β. When used, a high voltage pulse Vh is applied to the cholesteric liquid crystal 21 of the fingerprint type array 301. For example, the threshold voltage (Euw) pulse of the cholesteric liquid crystal 21 can be switched from the fingerprint type array 301 to the homeotropic texture 302. The liquid crystal modification structure 30 will be switched to a planar arrangement 303 via the vertical alignment 302, as indicated by the arrows S1/S2. Under actual operation, if the liquid crystal 21 of the fingerprint type array 301 is subjected to φ high voltage pulse Vh, the high voltage pulse will continue to form a homeotropic texture 3 〇 2 liquid crystal, as indicated by the program arrow S1. When the high voltage pulse vH is removed or disappears, the liquid crystal improved structure = will be switched from the vertical arrangement 302 to the planar arrangement 3〇3, as in the program arrow S2. Since the vertical arrangement 3〇2 is generally unsteady, the vertical arrangement 302 can also be referred to as a transition procedure. Further, if a low voltage pulse is applied to the cholesteric liquid crystal 21, such as the program arrow S3', the liquid crystal improving structure 3 can be switched from the planar type to the fingerprint type array 301. 9 201027198 Both the planar arrangement 303 and the fingerprint type arrangement 301 are in a steady state. Therefore, when the liquid crystal improving structure 30 is switched to the planar arrangement 303 or the fingerprint type arrangement 301, it is not necessary to continue to supply voltage, and it can be maintained in a planar type for a long time. Arrangement 303 or fingerprint type arrangement 301. Since the planar arrangement 303 is in a dark state and the fingerprint-type arrangement 301 is in a bright state, the liquid crystal improved structure 30 of the present invention can be used on a reflective, transmissive or semi-reflective semi-transmissive panel, and can be The light source in the visible wavelength range reflects. For example, in FIG. 4, the fingerprint type arrangement β 301 has a reflective layer 32 of a part of the pixel area on the bottom layer of the second substrate 313, and a transparent layer that the backlight source L3 can penetrate through the other part of the pixel area, so the fingerprint The pattern arrangement 30 is a half-reflective semi-transmissive liquid crystal structure. If the bottom layer of the second substrate 313 has only the backlight source L3 and no reflective layer 32, the structure is a transmissive liquid crystal structure. Moreover, if the bottom layer of the second substrate 313 has only the reflective layer 32 and no backlight source L3, the structure is @-reflective liquid crystal structure. The backlight source L3 includes at least parallel pupils 4 of parallel XI and vertical pupils 5 of vertical XI. When the backlight source L3 is incident on the liquid crystal 21 from the second substrate 313, the parallel pupil 4 is penetrated, and the vertical pupil 5 is absorbed, so that the transmitted light L4 has only the parallel pupil 4. The external light source L1 also has a parallel aperture 平行4 of parallel XI and a vertical aperture 垂直5 of vertical XI. When the external light source L1 is incident from the first substrate 311, the vertical aperture 5 will be absorbed, and the parallel aperture 4 will reach the second substrate. 313, such as the incident light L12, is reflected by the reflective layer 32 provided on the inner surface of the second substrate 313, the surface of the surface 201027198 or the bottom layer to become a reflected light L2. The reflected light L2 is present with parallel light X4, and the reflected light L2 will penetrate the liquid crystal 21 to be inverted. The external light source L1, after penetrating the cholesteric liquid crystal 21 of the fingerprint type arrangement 301, is reflected by the reflective layer 32, and causes the liquid crystal improving structure to be in a bright state. In addition, the steady state of the present invention is mainly between the planar arrangement 303 and the fingerprint type arrangement 301, compared to the conventional cholesteric liquid crystal panel (10) having a planar arrangement and a focal conic arrangement as a bistable structure. By switching the action®, the speed of switching can be increased to improve the quality of the display. Referring to Fig. 5, there is shown a schematic structural view of still another embodiment of the improved liquid crystal structure of the present invention. As shown in the figure, the liquid crystal improving structure 40 of the present invention includes a first substrate 311 and a second substrate 313, and at least one first electrode 33 is disposed on the first substrate 311, and the second substrate 313 is sequentially At least one second electrode 35 and at least one third electrode 47 are disposed. An insulating layer 46 is disposed between the second electrode 35 and the third electrode 47, and the third electrical reference electrode 47 is a coplanar electrode, and the cholesteric liquid crystal 21 and the dye 23 are disposed on the first substrate 311 and the second substrate 313. between. In the embodiment of the present invention, the cholesteric liquid crystal 21 can be a dual frequency liquid crystal (Dual Frequency LC), and the dual frequency liquid crystal exhibits positive liquid crystal characteristics at a low frequency voltage, and exhibits a spiral axis at a high frequency voltage. Negative liquid crystal characteristics parallel to the horizontal electric field. Therefore, when applied, the cholesteric liquid crystal 21 (dual-frequency liquid crystal) and the dye 23 are disposed between the first substrate 311 and the second substrate 313 and the south-frequency horizontal electric field E formed by the second electrode 47 causes the cholesteric liquid crystal 21 to become The fingerprint type is arranged, and the 11 201027198 spiral axis of the cholesteric liquid crystal 21 has a certain order in a single direction or a spiral axis direction. In actual production, the cholesteric liquid crystal 21 may be mixed with a polymer monomer (monomer such as BAB6) 25, and polymerized to form a fingerprint pattern, and then passed between the first electrode 33 and the second electrode 35. The low frequency electric field changes the arrangement of the cholesteric liquid crystals 21. Inputting a longitudinal high voltage pulse, for example a longitudinal low frequency high voltage pulse, to the first electrode 33 and the second electrode 35, the cholesteric liquid crystal 21 can be switched to a planar arrangement; if the first electrode 33 and the second electrode 35 are re-entered A longitudinal low voltage pulse, such as a longitudinal low frequency low voltage pulse, switches the cholesteric liquid crystal 21 to a fingerprint type arrangement. At the time of production, at least one dye 23 is doped into the cholesteric liquid crystal 21; the cholesteric liquid crystal 21 is mixed with a polymer monomer 25; and the cholesteric liquid crystal 21 has a certain order or a fingerprint direction in a single direction. Arrangement; finally, the polymer monomer 25 is subjected to a curing process such as light irradiation or heating to freeze the cholesterol liquid crystal 21, for example, to maintain the finger-arranged structure. In an embodiment of the present invention, after the polymer monomer 25 is subjected to a curing process such as light or heating, the polymer monomer is caused to become a polymer 45, and the polymer is used to freeze the structure of the cholesteric liquid crystal 21. Since the cholesteric liquid crystal 21 of the present invention will be a fingerprint type arrangement, the direction of the spiral axis has a certain order or a single direction, and the polymer 45 formed by the polymer monomer 25 is arranged in a frozen fingerprint type, so even after The horizontal electric field 不再 is no longer formed by the third electrode 47, and the cholesteric liquid crystal 21 still maintains its fingerprint type arrangement. 12 201027198 The high voltage pulse or low voltage pulse of the foregoing embodiments are all words that can be easily considered by professionals in the field of cholesterol liquid crystals, for example, published in (http://osdlab.eic.nctu.edu.tw) /LC/data/issues/2004_l/05. pdf ): China Liquid Crystal Society Newsletter - 2004 first issue (June 2004) a cholesteric liquid crystal e-book (E-Book), so it is not high in the present invention Voltage pulses and low voltage pulses are defined or described in detail. Please refer to Fig. 6, which is a schematic view of the structure of φ according to still another embodiment of the liquid crystal improved structure of the present invention. As shown in the figure, the liquid crystal improving structure 50 of the present invention includes a first substrate 311 and a second substrate 313. The second substrate 313 is provided with at least one third electrode 47, and is disposed on the first substrate 311 and the second substrate. Cholesteric liquid crystal 21 and dye 23 are disposed between 313. In the embodiment of the present invention, the cholesteric liquid crystal 21 is a negative liquid crystal, and when the third electrode 47 generates a horizontal electric field E that is horizontal to the first substrate 311 and/or the second substrate 313, the cholesterol is caused. The liquid crystal 21 is arranged in a fingerprint type with a certain order or a single direction. When the horizontal electric field E formed by the second electrode 47 is removed, the cholesteric liquid crystal 21 becomes a planar arrangement due to the horizontal alignment of the first substrate 311 and the second substrate 313. Of course, in the actual application, at least: the first electrode 33 may be disposed on the first substrate 311, and at least the second electrode 35 is disposed on the second substrate 313, and the insulating layer 46 is disposed in the second The electrode 35 is between the third electrode 47. When a longitudinal electric field E1 is formed or applied between the first electrode 33 and the second electrode 35, the cholesteric liquid crystal 21 can also be arranged in a flat pattern, thereby facilitating the structural morphological conversion speed of the cholesteric liquid crystal 21. improve. For this reason, the setting of the first electrode 33, the second electrode 35, and/or the third electrode 47 will be adjusted or changed depending on the characteristics of the cholesteric liquid crystal 21. Referring to Fig. 7, there is shown a plan view of a partial structure of an embodiment of a liquid crystal improved structure of the present invention. The third electrode 47 shown in the fifth and sixth figures of the present invention may be disposed in a strip shape, and the adjacent two third electrodes 47 ® will be parallel to each other, whereby the spiral axis of the cholesteric liquid crystal 21 will In a single direction, as shown in Figure 7, the first direction XI. In still another embodiment of the present invention, the third electrode 47 can also be as shown in FIG. <", or as shown in the wavy shape shown in Fig. 9, or in the form of a spiral or a polygon as shown in Fig. 10, the direction of the spiral axis of the cholesteric liquid crystal 21 will have a certain order, but it is not All of them will face the same single direction, and the spiral axis of the partial cholesteric liquid crystal 21 faces the second direction X2, and the spiral axis of the partial cholesteric liquid crystal 21 will face the third direction X3. In the present embodiment, the direction of the spiral axis of the cholesteric liquid crystal 21 has a certain order, but it is not only the single direction X2 or the single direction X3, which is different from the single direction XI in the embodiment shown in Fig. 7. In the case of a single element, although the direction of the helix axis is not directed to a single direction, the direction of the helix axis still has a single direction in the partial region of the element, so that the direction of the helix axis of the cholesteric liquid crystal 21 has a certain order. Referring to Figure 11, there is shown a schematic view of a further embodiment of a liquid crystal improved structure of the present invention. As shown in the figure, the liquid crystal improving structure 60 14 201027198 includes a first substrate 311 and a second substrate 313, and at least one first electrode 33 is disposed on the first substrate 311, and the second substrate 313 is disposed on the second substrate 313. A second electrode 35 is provided, and the cholesteric liquid crystal 21 and the dye 23 having a positive liquid crystal characteristic are disposed between the first substrate 311 and the second substrate 313. In application, after forming the first electrode 33 and the second electrode 35, the surfaces of the first electrode 33 / the second electrode 35 and/or the first substrate 311 / the second substrate 313 are parallel or anti-parallel to each other. Orientation processing, as shown in Figure X6. A longitudinal small electric field E2 is applied to the planar arrangement of the cholesteric liquid crystal 21® by the first electrode 33 and the second electrode 35, for example, at d/p > 3/2 (d is the panel pitch, p is the cholesteric liquid crystal pitch) Under the condition of the planar arrangement 303, a longitudinal small electric field E2 of about 0.3 V/um is applied to the cholesteric liquid crystal 21, whereby the cholesteric liquid crystal 21 can be made into a fingerprint-type arrangement 301 in which the helical axis is perpendicular to the horizontal alignment direction X6. The cholesteric liquid crystal 21 is frozen in the fingerprint type alignment structure 3 by the polymer 65 formed of the polymer monomer (H. φ, when applied, a high voltage pulse can be input to the first electrode 33 and the second electrode 35, which will make The cholesteric liquid crystal 21 is switched from the fingerprint type arrangement 301 to the planar type arrangement 303. When a low voltage pulse is input to the first electrode 33 and the second electrode 35, the cholesteric liquid crystal 21 can be switched from the planar type arrangement 303 to the fingerprint type arrangement. 301, as shown in Figure 3, the program S1/S2/S3. In another embodiment of the present invention, the positive-type liquid crystal can also use a dual-frequency liquid crystal with a low-frequency voltage to make it exhibit positive liquid crystal characteristics. Negative fluid The crystal can also be used with a dual-frequency liquid crystal in combination with a high-frequency voltage to make it exhibit a negative liquid 15 201027198 crystal feature. Continuation, please refer to FIG. 1 2 A ' is a schematic diagram of a configuration of another embodiment of the present invention at the time of switching. The liquid crystal improving structure 70 can also be applied to a polymer dispersed Cholesteric Liquid Crystal (PDCLC) doped with a large amount of polymer monomers. The main function is to hold at least a dye 23 in the cholesteric liquid crystal 21. And mixed with a polymer monomer (25), and need to regulate the weight ratio of liquid crystal / polymer monomer (CLC / monomer). Place the prepared cholesterol liquid crystal 21, dye 23 and polymer monomer (25) in A curing process such as light irradiation or heating is performed between the first substrate 311 and the second substrate 313 to form a polymer 45 and a plurality of liquid crystal droplets 71, and polymerized. The liquid crystal droplets 71 are coated with the liquid crystal droplets 71, and the liquid crystal droplets 71 are present with the cholesteric liquid crystal 21 and the dye 23. If the formation conditions are properly matched, for example, the alignment, the liquid crystal/tantal polymer weight ratio, and the light/ The heat curing process and/or the liquid crystal droplet size is much larger than the liquid crystal pitch and the like, and the cholesteric liquid crystal 21 and the dye 23 form a spherulite arrangement 304 in the liquid crystal droplets 21. In an embodiment of the present invention, The cholesteric liquid crystal 21 system can be a negative liquid crystal or a dual frequency liquid crystal which can exhibit negative characteristics, such as an E7 liquid crystal. The polymer monomer (25) can be selected from a N0A65 material, and the liquid crystal/polymer monomer weight ratio is The regulation is 1:1, whereby a crystal-like liquid crystal arrangement 304 is formed. A horizontal electric field 16 201027198 E is input between the first substrate 311 and the second substrate 313, and the spherical electric field 21 and the dye 23 can be removed from the ball stone by the horizontal electric field E formed by the second electrode 47. The arrangement 304 is switched to mean the arrangement 301' and the cholesteric liquid crystal 21 of the fingerprint arrangement 301 will have a fixed order or a spiral axis in a single direction. If the horizontal electric field E is removed again, the cholesterol liquid crystal 21 located in the liquid crystal droplet 71 can be switched from the fingerprint type arrangement 301 to the ball-like arrangement 304. Therefore, the dark state of the liquid crystal improving structure 70 can be determined by the presence or absence of the horizontal electric field E. For example, the ball-shaped arrangement 304 is in a dark state, and the fingerprint-type array 301 is in a bright state. In still another embodiment of the present invention, as shown in FIG. 1B, if the cholesteric liquid crystal 21 is a positive plastic liquid crystal or a dual-frequency liquid crystal that can exhibit a positive characteristic, the first substrate 311 and the second substrate 313. When a longitudinal electric field E1 is input, for example, a longitudinal electric field E1 formed by the first electrode 33 and the second electrode 35, the cholesteric liquid crystal 21 and the dye 23 in the spheroidal arrangement 304 are switched to the fingerprint type arrangement 301. Therefore, the dark state of the liquid crystal improving structure 70 can be determined by the presence or absence of the longitudinal electric field E1. For example, the fingerprint type arrangement 301 is in a bright state, and the ball-shaped arrangement 304 is in a dark state. Referring to Figure 13A, there is shown a schematic view of a further embodiment of the present invention at the time of switching. The liquid crystal improved structure 80 of the present invention is applicable to a microcapsule cholesteric liquid crystal structure. A microcapsule liquid crystal droplet 72 can be formed by using a microcapsule process technology such as a microcapsule process similar to an electrophoretic display, and the microcapsule liquid crystal droplet 72 mainly utilizes a microcapsule shell layer 77 to coat cholesterol. The liquid crystal 21 and the dye 23' form a ball-like arrangement 304. The cholesteric liquid crystal 21 system can be selected with negative liquid crystal or can exhibit negative type 17 201027198 liquid crystal dual-frequency liquid crystal. Similarly, the liquid crystal improvement can be determined by the presence or absence of the horizontal electric field E. The dark state of the structure 80. For example, in the absence of the horizontal electric field E, the spheroidal arrangement 304 is in a dark state, and in the presence of the horizontal electric field E, the fingerprint-type array 301 is in a bright state. Of course, as shown in FIG. 1B, if the cholesteric liquid crystal 21 is a positive liquid crystal or a dual frequency liquid crystal which can exhibit a positive characteristic, the liquid crystal improved structure can also be determined by the presence or absence of the longitudinal electric field E1. Dark State®. For example, the fingerprint type arrangement 301 in the presence of the longitudinal electric field E1 is in a bright state, and the spherical arrangement 304 in the absence of the longitudinal electric field E1 is in a dark state. In addition, referring to FIG. 14 , which is a schematic diagram of a configuration of another embodiment of the present invention at the time of switching, the liquid crystal improving structure 90 of the present embodiment is similar to the embodiment shown in FIG. 3 , and the dual-frequency liquid crystal 21 and the dye 23 are mixed. The first substrate 311 and the second substrate 313 are placed between each other. φ When a longitudinal electric field E2 is generated between the first electrode 33 and the second electrode 35, the liquid crystal improving structure 90 will become the focal conic arrangement 305, exhibiting a positive liquid crystal characteristic. The cholesteric liquid crystal 21 is switched to the vertical alignment 302 (Vh continuous supply period) by inputting one of the high voltages (Vh), and is switched to the planar arrangement 303 as an arrow, as indicated by an arrow S1, or by inputting a high voltage pulse (Vn). S1/S2. Further, when a longitudinal low voltage pulse (V1) is input, the liquid crystal improving structure 90 of the planar array 303 can be switched back to the focus conical arrangement 305, as indicated by the arrow S3. In the case of the planar arrangement 303, the vertical arrangement 302 or the focal conic type 18 201027198 arrangement 305, if the horizontal electric field e formed by the third electric field 47 is input, the dual-frequency liquid crystal 21 will exhibit a negative liquid crystal characteristic, so that the cholesteric liquid crystal 21. The spiral axis has a - order or a single-direction fingerprint type arrangement 3 (H, the fingerprint plastic arrangement 301 is - bright state, such as arrow or dip. by dye 23 and / or cholesterol liquid crystal 2 type The choice of the fingerprint type arrangement 〇1, the plane type arrangement 303 or the focus cone type arrangement 〇5 bright and dark state can be matched with the design. Please refer to the 1st 5® 'the present invention n structural structure schematic diagram, the present invention The liquid crystal improving structure 1 is mainly provided with a polarizing plate 91 and a fourth electrode 475 on the first substrate 311, and a third electrode 47 is disposed on the second substrate 313. The fourth electrode 475 and the f three electrode 47 are provided. The fourth electrode 475 and the third electrode 47 are each a coplanar electrode. In this embodiment, the passing direction χ6 of the polarizing plate 91 is the incident paper surface, and the external light source L1 has parallel. X-axis horizontal light 14 and The vertical pupil 5, the vertical pupil 5 is in the same direction as the direction of the passing axis Χ6. ❹ When the > electrode 47 forms a horizontal electric field Ε:, the liquid crystal improving structure 1 胆固醇 the cholesteric liquid crystal 21 can be arranged from a flat type (3〇3) Switching to the (first) fingerprint type arrangement 301 'The spiral axis of the cholesteric liquid crystal 21 has a certain order or a single direction XI. When the external light source L1 passes through the polarizing plate 91, the horizontal aperture 4 of the external light source will be filtered out, and only the pointing is allowed. The vertical pupil 5 of the paper passes to form incident light L12. The incident light L12 is absorbed or scattered by the dye 23, and does not form reflected light (L2). Therefore, the (first) fingerprint type array 301 is in a dark state. 19 201027198 When the level of the second electrode 4 7 of the younger brother is lost, the cholesteric liquid crystal 21 of the liquid crystal improving structure 100 can be switched from the first fingerprint type arrangement 301 to the flat type arrangement (303). When the fourth electrode 475 forms the second horizontal electric field E3, the cholesteric liquid crystal 21 of the liquid crystal improving structure 100 can be arranged from a planar type (= switched to the second finger=type 歹 歹 "I 306, the spiral axis of the cholesteric liquid crystal 21 has a certain order Or toward One direction X6 (pointing to the paper surface). When the external light source L1 passes through the polarizing plate 1091, 'only the vertical pupil 5 directed to the paper surface is allowed to pass to form the incident light L12. The incident light having the χ5 direction will pass through the cholesteric liquid crystal 21 And the dye 23 is reflected by the mirror 32 to form a reflected light L2, so 'the second fingerprint type arrangement 306 is in a bright state. Similarly, when the second horizontal electric field E13 of the fourth electrode 475 disappears, the liquid crystal is improved. The cholesteric liquid crystal 21 of the structure 1 can be switched from the second fingerprint type arrangement 306 to the planar type arrangement (3〇3). The spiral electric axis direction of the cholesteric liquid crystal 21 can be determined by the (first) horizontal electric field E formed by the third electrode 47 or the second horizontal electric field £3 formed by the fourth ytterbium electrode 475, and becomes a polarizing plate 91. The dark state is perpendicular to each other by the axial direction, or is horizontally horizontal with the direction of the passing axis of the polarizing plate 91. In still another embodiment of the present invention, the first fingerprint type arrangement 3〇1 or the second type fingerprint type arrangement 306 may be frozen by the formation of the polymer 45, and the third electrode 47 or the fourth electrode may be selected. The electrode 475 generates a lateral horizontal electric field E or E3 (as shown in Fig. 17B) to change the direction of the spiral axis of the cholesteric liquid crystal 21, so that the dark state of the liquid crystal modified structure 1〇〇201027198 can also be produced. For example, the first fingerprint type arrangement 301 is freeze-fixed by the polymer 45, and the spiral axis direction of the first fingerprint type array 301 is made perpendicular to the direction of the axis of the polarizing plate 91 to be in a dark state. By the second horizontal electric field E3 formed by the fourth electrode 475, the spiral axis of the cholesteric liquid crystal 21 can be rotated by 90 degrees to be in the same direction as the direction of the passing axis of the polarizing plate 91, so as to become the second fingerprint type arrangement 306. Bright state. When the second horizontal electric field E3 is removed, the cholesteric liquid crystal 21 can be switched from the second fingerprint type arrangement 306 to the first type fingerprint type arrangement 301 of the dark state. In still another embodiment of the present invention, the first fingerprint type arrangement 301 (or the second type fingerprint type arrangement 306) may also be applied to the method as shown in FIG. 1 , that is, the dual-frequency liquid crystal 21 is firstly small through the vertical direction. After the electric field E2 and the alignment process are performed to form the fingerprint type arrangement 301, the first fingerprint type arrangement 301 is frozen and fixed by the polymer 45 through a curing process. Subsequently, the fourth electrode 475 is used to change the dual-frequency liquid crystal 21 to the second type fingerprint type array 306, thereby achieving the purpose of matching the polarizing plate 91 to switch the dark state of the liquid crystal improving structure 100. In this embodiment, the first electrode (33) and the second electrode (35) must exist, but the third electrode 47 and the fourth electrode 475 need only be selected to be present. Of course, if the first electrode (33) is disposed on the first substrate 311, an insulating layer may also exist between the first electrode (33) and the fourth electrode 475. Referring to FIG. 16, a schematic configuration diagram of another embodiment of the present invention is provided with a gap thickness d between the first substrate 311 and the second substrate 313. If the liquid crystal improving structure 110 is in the second type fingerprint type arrangement 306, 21 201027198, the passing axis of the external light source L1 or the backlight source L3 is parallel to the spiral axis direction of the cholesteric liquid crystal 21 (or the same direction), then the external light source L1 or the backlight The light source L3 will be reflective or penetrable such that the liquid crystal improved structure 110 is in a bright state in the second type fingerprint pattern arrangement 306. When the third electrode 47 generates the lateral horizontal electric field E, the cholesteric liquid crystal molecules 213 close to the third electrode 47 will form a first fingerprint type arrangement (301) whose spiral axis faces XI and is parallel to the horizontal electric field E, away from the third electric field. Since the cholesterol liquid crystal molecule 215 of 47 is widened by the thickness d, β is not affected by the horizontal electric field E, or the second type fingerprint type arrangement 306 is maintained to become a third type fingerprint type arrangement 307. The spiral axes of the cholesteric liquid crystal molecules 213 and the cholesteric liquid crystal molecules 215 in the third type fingerprint type arrangement 307 will be perpendicular to each other, regardless of whether the external light source L1 or the backlight source L3 is absorbed by the cholesteric liquid crystal 21 and/or the dye 23, and thus the third The fingerprint type arrangement 307 will become a dark state. If the horizontal electric field Ε is removed, since the second type fingerprint type arrangement 306 has been frozen and fixed by a polymer 45, the liquid crystal improving structure 110 can be switched from the third type fingerprint type arrangement 307 back to the bright type second type fingerprint. Type arrangement 306. The cholesteric liquid crystal 21 system can be selected from a negative liquid crystal or a dual frequency liquid crystal having a liquid crystal characteristic. In the drawing, the cholesteric liquid crystal 217 interposed between the cholesteric liquid crystal 213 and the cholesteric liquid crystal 215 is affected by a portion of the horizontal electric field enthalpy, so that the helical axis Χ 7 will be rotated by an angle, for example, 45 degrees. 17 and FIG. 17 are respectively a plan view of a further embodiment of the present invention and a top view of a third electrode 47/fourth electrode 475 22 201027198. The liquid crystal improving structure 120 can be by the foregoing embodiment. The method of making the fascination is to form a fingerprint type arrangement, for example, the second fingerprint type arrangement .306, which is a bright state. When the fourth electrode 'π disposed on the first substrate 311 generates a lateral second horizontal electric field Ε3, and the third electrode 47 disposed on the second substrate 313 simultaneously generates the (first) horizontal electric field ε, the adjacent cholesteric liquid crystal The molecule 215/213 will be affected and the third fingerprint type arrangement 3〇7, which forms the spiral axis of the cholesteric liquid crystal molecules 215/213, is a dark state. The fourth electrode 475 is a coplanar electrode as the third electrode 47 and the fourth electrode 475 can also be a strip, a r <" shape, a wave shape, a polygon shape or a spiral shape. In this embodiment, the second horizontal electric field Ε3 is generated by the fourth electrode 475 to maintain the bright state of the second fingerprint type arrangement 3〇6, and then the (first) horizontal electric field of the third electrode 47 is used. Existence or not to determine whether to form a dark state of the third fingerprint type arrangement 307. In another embodiment, the polymer 45 may be used to freeze and fix the bright state of the second fingerprint type arrangement 306, and then the presence or absence of the (first) horizontal electric field 第三 of the third electrode 47 determines whether or not the formation is formed. The dark state of the third fingerprint type arrangement 307. This embodiment can also be used in combination with the polarizing plate (91) described above, and the switching between the second fingerprint type arrangement 306 and the third fingerprint type arrangement 307 can be used to determine whether the light can pass through the axis of the polarizing plate (91). The dark and bright state of the liquid crystal improved structure 120 can be changed. In addition, please refer to FIG. 18, which is a schematic diagram of a structure 23 201027198 according to another embodiment of the present invention. The liquid crystal improving structure 130 of the present invention is mainly provided with a first electrode 33 on the first substrate 311, and at least one bump 93 and/or at least one slit 95 is provided on the first electrode 33, and the second A second electrode 35 is disposed on the substrate 313. When a longitudinal electric field (E4) is generated between the first electrode 33 and the second electrode 35, due to the action of the protrusion 93 and/or the slit 95, the longitudinal electric field will be formed into an oblique electric field E4' oblique electric field E4. There is a property of the approximate horizontal electric field (E), and the cholesteric liquid crystal 21 and the dye 23 also change their helical axes relative to each other such that the liquid crystal improving structure 130 is switched from the planar arrangement 303 to the fourth fingerprint arrangement 308. Therefore, the dark state of the liquid crystal improving structure 130 can be changed. Of course, if the oblique electric field E4 is removed, the liquid crystal improving structure 130 can be switched from the bright state of the fourth fingerprint arrangement 308 to the dark state of the planar arrangement 303. This embodiment can also be used in combination with the polarizing plate (91) described above, and the switching between the flat surface pattern arrangement 303 and the fourth fingerprint pattern arrangement 308 can be used to determine whether the light can pass through the axis of the polarizing plate (91). The dark state of the liquid crystal improved structure 130 can be changed. Referring to FIG. 19, it is a schematic diagram of a configuration of a second embodiment of the present invention. When the liquid crystal improving structure 140 of the present invention forms a fourth fingerprint type array 308 by oblique electric field E4, a polymer single can be used. The polymer 45 formed by the body freezes and fixes the structure of the fourth fingerprint type arrangement 308, and is in a bright state. Then, the high voltage pulse and/or the low voltage pulse between the first electrode 33 and the second electrode (35) are used to switch between the fourth fingerprint type arrangement 308, 24 201027198 plane type arrangement 303 or the vertical type arrangement 302. This results in switching between dark/bright states or bistable states of the liquid crystal improved structure 140. In still another embodiment of the present invention, the second electrode (35) may also be replaced by a third electrode or a pixel electrode 47, and the third electrode 47 or the second electrode (35) may also be formed with a slit 955 or a The protrusion 935 can also achieve the purpose of generating an oblique electric field E4. Also, the protrusions 93/935 and/or the slits 95/955 can be a ring, a concentric circle or a polygon. Finally, please refer to FIG. 20, which is a schematic structural view of another embodiment of the present invention. The liquid crystal improving structure 150 of the present invention can also heat the cholesteric liquid crystal 21 to an isotropic liquid state and then cool down, so as to cause Although the spiral axis of each cholesteric liquid crystal 21 is parallel to the first substrate 311 or the second substrate 313, the directions of the spiral axes are not the same or have a certain order, such as XI, X5 and X7, to form a fifth fingerprint type arrangement 309. It is dark. After the polymer 45 is used to freeze and fix the fifth fingerprint type array 309, the liquid crystal improving structure 150 can be switched to the bright state of the first fingerprint type array 301 by the horizontal electric field E generated by the third electrode 47. If the horizontal electric field E is removed again, the fifth fingerprint type arrangement 309 of the dark state can be switched back. Thus, the purpose of switching the bright and dark state of the liquid crystal improving structure 150 of the present invention can be achieved. Of course, in another embodiment of the present invention, when the cholesteric liquid crystal is a positive liquid crystal or a dual frequency liquid crystal having a positive liquid crystal characteristic, when the polymer 45 freezes and fixes the fifth fingerprint type array 309, a vertical view can be used. The small electric field, 25 201027198 can also switch the liquid crystal improved structure 150 to the bright state of the first fingerprint type arrangement 301. The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the practice of the present invention, such as positive liquid crystal, dual frequency liquid crystal, negative liquid crystal or dye material combination to change the dark state. Equivalent changes, modifications, and modifications of the shapes, structures, features, and spirits of the present invention should be included in the scope of the present invention. [Simple description of the drawing] Fig. 1 is a schematic view showing the structure of a conventional cholesteric liquid crystal panel. Fig. 2 is a schematic view showing the construction of a liquid crystal improved structure of the present invention. Fig. 3 is a schematic view showing the structure of the liquid crystal improved structure of the present invention at the time of switching. Fig. 4 is a schematic view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention. Fig. 5 is a schematic view showing the construction of still another embodiment of the liquid crystal improving structure of the present invention. Fig. 6 is a schematic view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention. Figure 7 is a plan view showing a partial structure of an embodiment of the liquid crystal improved structure of the present invention. Fig. 8 is a partial plan view showing an embodiment of a liquid crystal-improving structure of the present invention. 26 201027198 Fig. 9 is a plan view showing a partial structure of a liquid crystal-improved structure of the present invention. Fig. 10 is a partial structural plan view showing an embodiment of the liquid crystal improved structure of the present invention. Fig. 11 is a view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention. Fig. 1 2A is a schematic view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention. Fig. 1 2 B is a schematic view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention. Fig. 1 3A is a schematic view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention. Fig. 1 3B is a schematic view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention. Fig. 14 is a structural diagram showing another embodiment of the liquid crystal improved structure of the present invention at the time of switching. Fig. 15 is a schematic view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention. Fig. 16 is a schematic view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention. Fig. 17A is a schematic view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention. Fig. 17B is a plan view of a part of the embodiment of the present invention as shown in Fig. 17A. Fig. 18 is a schematic view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention. Fig. 19 is a view showing the configuration of another embodiment of the liquid crystal improving structure of the present invention at the time of switching. Fig. 20 is a schematic view showing the configuration of still another embodiment of the liquid crystal improving structure of the present invention.
【主要元件符號說明】 10 膽固醇液晶面板 101 焦點圓錐型排列 102 垂直型排列 103 平面型排列 11 前基板 13 膽固醇液晶 131 膽固醇液晶分子 15 後基板 20 液晶改良結構 21 膽固醇液晶 211 膽固醇液晶分子 213 膽固醇液晶分子 215 膽固醇液晶分子 217 膽固醇液晶分子 23 染料 25 高分子單體 30 液晶改良結構 301 指紋型排列 302 垂直型排列 303 平面型排列 304 球石狀排列 305 焦點圓錐型排列 306 第二指紋型排列 307 第三指紋型排列 308 第四指紋型排列 309 第五指紋型排列 311 第一基板 313 第二基板 32 反射層 33 第一電極 35 第二電極 40 液晶改良結構 45 聚合物 46 絕緣層 28 201027198 47 第三電極 475 弟四電極 50 液晶改良結構 60 液晶改良結構 70 液晶改良結構 71 液晶滴 72 微膠囊液晶滴 77 微膠囊外殼層 80 液晶改良結構 90 液晶改良結構 91 偏光板 93 突出物 935 突出物 95 隙缝 955 隙縫 100 液晶改良結構 φ 110 液晶改良結構 120 液晶改良結構 130 液晶改良結構 140 液晶改良結構 150 液晶改良結構 ❹ 29[Main component symbol description] 10 Cholesterol liquid crystal panel 101 Focus conical arrangement 102 Vertical arrangement 103 Planar arrangement 11 Front substrate 13 Cholesterol liquid crystal 131 Cholesterol liquid crystal molecule 15 Rear substrate 20 Liquid crystal improved structure 21 Cholesterol liquid crystal 211 Cholesterol liquid crystal molecule 213 Cholesterol liquid crystal Molecule 215 Cholesterol liquid crystal molecule 217 Cholesterol liquid crystal molecule 23 Dye 25 Polymer monomer 30 Liquid crystal improved structure 301 Fingerprint arrangement 302 Vertical arrangement 303 Planar arrangement 304 Ball-shaped arrangement 305 Focus cone arrangement 306 Second fingerprint type arrangement 307 Three fingerprint type arrangement 308 Fourth fingerprint type arrangement 309 Fifth fingerprint type arrangement 311 First substrate 313 Second substrate 32 Reflection layer 33 First electrode 35 Second electrode 40 Liquid crystal improving structure 45 Polymer 46 Insulation layer 28 201027198 47 Third Electrode 475 Four electrodes 50 Liquid crystal improved structure 60 Liquid crystal improved structure 70 Liquid crystal improved structure 71 Liquid crystal drop 72 Microcapsule liquid crystal drop 77 Microcapsule outer layer 80 Liquid crystal improved structure 90 Liquid crystal improved structure 91 Polarizing plate 93 Projection 935 Prominent 95 100 slot 955 slot improved structure of the liquid crystal of the liquid crystal φ 110 120 an improved structure of the liquid crystal 130 of the liquid crystal structure modified crystal structure 140 modified crystal structure 150 is improved modified structure ❹ 29