200409999 玖、發明說明： 【發明所屬之技術領域】 本發明係有關於一種進行彩色影像顯示之圖像顯示裝 置，特別是一種將藉由階調變動而將顯示色之彩度、色相 之不均抑制至無法辨識的程度，而可顯示高品質之彩色影 像的圖像顯不裝置。 【先前技術】 習知，作爲圖像顯示裝置，已知係藉由控制液晶分子 之配向性來控制每一個顯示畫素之光透過率，藉由使具備 有指定之透過波長特性之彩色濾波器透過來進行彩色影像 顯示的圖像顯示裝置。該種圖像顯示裝置係爲，例如在與 利用CRT等之物相比較之下，爲具有薄型之構造、且可 輕量化，同時，爲具有可減低消費電力等優點。 第1 3 A圖係顯示使用有習知之液晶材料的圖像顯示裝 置之構造的模式圖。如第1 3 A圖所示，習知之圖像顯示 裝置係具有配置有各式各樣之電路元件的陣列基板1 〇 1、 被配置成對向於陣列基板1 0 1的對向基板1 0 2、被封入至 陣列基板101以及對向基板102之間的液晶層103，在陣 列基板1 〇 1與對向基板1 C2之外表面上，所具有之構造爲 具備有分別具有指定之偏光面的偏光板1 04、1 05。此外， 在陣列基板1 〇 1下部方面，係配置有對向於液晶層1 〇3、 且用以使面狀之白色光射入之背光模組1 06。再者，在偏 光板104與對向基板102之間，所配置之彩色濾波器107 爲具備有已對應於R (紅色）G (綠色）B (藍色）三色之 200409999 透過特性，而使用 R、G、B三色而可進行彩色影像之顯 示。 針對習知之圖像顯示裝置之動作進行說明。首先，由 背光模組1 06所輸出之面狀光係被射入至配置在陣列基板 1 〇 1之外表面上的偏光板1 04，僅通過已相合於偏光板1 04 之偏光面的偏光成分，而僅使該單一偏光成分輸入至液晶 層1 0 3。在陣列基板1 〇 1上係對應於顯示畫素而配置有畫 素電極，承受由於供給至畫素電極之電位所造成之電場的 影響，液晶層1 03係具有將輸入光之偏光面僅旋轉指定之 角度、以進行輸出之機能。從而，藉由調整畫素電極之電 位，使僅以所期望之角度旋轉偏光面之光輸入至偏光板 105° 偏光板105係由於具有與偏光板104相同之指定的偏 光面，因此在被射入偏光板105之光中，僅通過具備有與 偏光板1 〇 5之偏光面一致之偏光面的偏光成分。在此，輸 入至偏光板105之光之偏光面的方向係藉由在液晶層103 中之偏光面的旋轉角來決定，因此，藉由控制配置在陣列 基板上之畫素電極之電位，而可調整透過偏光板105之光 的強度。並且，已由液晶層1 03所輸出之光係通過彩色濾 光器107，藉此而使對應於R、G、B之波長之光透過，藉 由已通過偏光板1 〇 5之光而顯示影像。 有關對於液晶層1 03之付與電場之機構（mechanism )， 習知係提案有各種方式。例如，近年來爲具有在陣列基板 1 0 1上不僅配置有畫素電極、亦配置有共通電極之構造， 200409999 藉由在畫素電極與共通電極之間付與指定之電位差，而以 橫向對於液晶層1 03付與電場，換言之，係提案有一種橫 向電場效應（In Plane Switching，以下簡稱爲「IPS」）型 之圖像顯示裝置。IPS型之圖像顯示裝置係由於具有良好 的電壓維持特性、以及較廣之視角等優越的特性，因此特 別在近幾年來廣受注目（例如，參考專利文獻1之日本專 利特開平9 - 1 0 1 5 3 8號公報）。 【發明內容】 〔發明所欲解決之課題〕 不過，在習知之圖像顯示裝置中，在進行不同階調之 色顯示時，不僅僅是明亮度、彩度或是/以及色相將由於 變動而具有造成影像品質降低之問題。亦即，例如當R、 G、B之強度比在一定的顯示色中，爲緩緩地使階調降低 的情況下，已知爲對應於階調之降低而變動R、G、B之 強度比。具體而言，在具備兩片偏光板之具有相互正交之 偏光面的圖像顯示裝置中，係報告有明亮度之降低、亦即 在進行低階調顯示時顯示色爲逐漸青色化之現象。此外， 在具備有相互平行之偏光的圖像顯示裝置中，已知爲在進 行低階調顯示時，爲降低對應於青色之波長成分之強度、 而將用以補色之黃色顯在化（actual existence )。 第13B圖所示，係在具備有兩片之具有相互正交之偏 光面的偏光板的習知之圖像顯示裝置中，爲表示於黑色顯 示時之透過率的波長依存性者。黑色顯示時之透過率係 爲，跨越全波長範圍、而以形成〇 %者爲較理想，不過， 200409999 實際上係如第13B圖所示，對應於青色之400nm附近之 波長之光的透過率爲具有高於其他波長之光成分之値。 在無關於階調變動而產生的情況下，藉由設置將已對 應於其他青色之波長之光以指定比例來進行遮蔽的濾光 器，進而得以解決該種透過率之波長依存性。不過，在習 知之圖像顯示裝置中，依據由高階調顯示移至低階調顯示 而逐漸提升對應於青色之波長之光的透過率。從而，針對 於低階調顯示而使用已最佳化之濾光器的情況下，在高階 調顯示時，形成爲將對應於青色之波長之光的強度降低至 低於其他波長之光，將用以補色之黃色顯在化、進而變動 顯示色之彩度、色相，故而較不妥當。 在低階調顯示時之中的彩度、色相之變動，係推測爲 由於液晶層以及偏光板之構造、特別是偏光板之構造爲主 因而產生者。由液晶層所造成之彩度、色相之不均，係可 藉由控制包含在液晶層之液晶分子之折射率△ η '以及液 晶層之厚度d，而可減低某種程度。具體而言，藉由作爲 減低折射率△η以及厚度d之積的構造，除了可減低在液 晶層中透過光之波長依存性之物、同時係可抑制透過率形 成最大之波長的變動。不過，爲了實現對於輸入影像信號 之應答的高速化以及低消費電力，爲必須使用折射率△ 1Ί 爲大的液晶材料，在厚度d之減低方面亦具有限度。從而， 藉由調整折射率△ η以及厚度d，將無法將彩度、色相之 不均減低至無法辨識之位準。 此外’由關於因偏光板所造成之彩度的不均，在目前 200409999 的時間點下並未提案有有效的解決手段。過去所使用之偏 光板係將於分子構造中具有異方性（aeolotropic)之碘混 入溶媒中、藉由整形成爲板狀所形成，彩度之不均係推測 爲起因於碘而產生。不過，在目前的時間點下並未提案有 有關取代碘之實用的材料，在現實方面來說亦無藉由除了 碘以外的材料來形成偏光板，因此，在目前的時間點下， 係難以改良偏光板，且難以將彩度、色相之不均減低至無 法辨識爲止。 本發明係有鑒於上述習知技術之問題點所提出之物， 其目的在於提供一種圖像顯示裝置，係藉由階調變動而將 顯示色之彩度、色相之不均減低至無法辨識爲止，而可顯 不局品質之彩色影像。 〔用以解決課題之手段〕 爲了達成上述目的，有關申請專利範圍第1項之圖像 顯不裝置係爲，一種圖像顯示裝置，具備有陣列基板與對 向基板、以及被封入至該陣列基板以及前述對向基板之間 的液晶層，依據該液晶層之電氣光學效果而進行影像顯 示’其特徵在於具備有：第一偏光板，對於前述液晶層爲 配置在前述陣列基板側，而具有第一偏光特性；第二偏光 板’對於前述液晶層爲配置在前述對向基板側，具有第二 偏光特性；彩色濾波器，爲配置在前述第一偏光板以及前 述第二偏光板之間，對於射入光爲透過指定波長之光成 分，同時，在低階調顯示時進行顯在化，而形成造成彩度 以及/或色相變動原因之有彩色之補色之一以上的波長之 -10- 200409999 光成分選擇性地散亂，而使該波長之光的對比降低。 若藉由本發明之申請專利範圍第1項之發明時，不僅 是透過指定波長之光成分，同時，所具備之彩色濾波器係 爲在低階調顯示時進行顯在化，而形成造成彩度以及/或 色相變動原因之有彩色之補色之一以上的波長之光成分選 擇性地散亂，因此，在低階調顯示時之顯示特性之變動原 因所造成之有彩色的補色爲以一定的比例所輸出，藉由輸 出該補色爲可抑制顯示特性之變動。 此外，有關申請專利範圍第2項之圖像顯示裝置係爲， 在上述發明之中，其中，前述第一偏光板以及前述第二偏 光板係被配置成使偏光面相互正交，前述彩色濾波器係使 形成黃色之一以上的波長之光之對比降低。 此外，有關申請專利範圍第3項之圖像顯示裝置係爲， 在上述發明之中，其中，前述第一偏光板以及前述第二偏 光板係被配置成使偏光面相互平行，前述彩色濾波器係使 形成青色之一以上的波長之光之對比降低。 此外，有關申請專利範圍第4項之圖像顯示裝置係爲， 在上述發明之中，其中，在低階調顯示時，由於進行顯在 化之彩度以及/或色相之變動原因所形成之前述有彩色之 補色，係藉由混合第一波長之光、以及與前述第一波長不 同之第二波長之光所形成，前述彩色濾波器係至少含有將 前述第一波長之光透過、散亂之著色粒子，以及使前述第 二波長之光透過、散亂之著色粒子。 此外，有關申請專利範圍第5項之圖像顯示裝置係爲， -1 1- 200409999 在上述發明之中，其中，前述彩色濾波器更具備有著色粒 子，係使已對應於在低階調顯示時，由於進行顯在化之彩 度以及/或色相之變動原因所形成之前述有彩色之補色的 第三波長之光散亂者，對於該第三波長之光的對比値與對 於前述第一波長以及第二波長之光的對比値之間的比，係 形成爲1比0.4 5。 此外，有關申請專利範圍第6項之圖像顯示裝置係爲， 一種圖像顯示裝置，具備有陣列基板與對向基板、以及被 封入至該陣列基板以及前述對向基板之間的液晶層，依據 該液晶層之電氣光學效果而進行影像顯示，其特徵在於具 備有：彩色濾波器，爲選擇性的至少透過第一波長之光以 及與該第一波長之光不同之第二波長之光；第一偏光板， 對於前述液晶層爲配置在前述陣列基板側，而具有第一偏 光特性；第二偏光板，對於前述液晶層爲配置在前述對向 基板側，具有第二偏光特性；選擇散亂裝置，係被配置在 前述第一偏光板以及前述第二偏光板之間，對於射入光爲 在低階調顯示時進行顯在化、將有彩色之補色之一以上的 波長之光成分選擇性地散亂，而使該波長之光的對比降 低。 此外，有關申請專利範圍第7項之圖像顯示裝置係爲， 在上述發明之中，其中，前述第一偏光板以及前述第二偏 光板係被配置成使偏光面相互正交，前述選擇散亂裝置係 使形成黃色之一以上的波長之光之對比降低。 此外，有關申請專利範圍第8項之圖像顯示裝置係爲， 在上述發明之中，其中，前述第一偏光板以及前述第二偏 -12- 200409999 光板係被配置成使偏光面相互平行，前述選擇散亂裝置係 使形成青色之一以上的波長之光之對比降低。 此外，有關申請專利範圍第9項之圖像顯示裝置係爲， 在上述發明之中，其中，在低階調顯示時，由於進行顯在 化之前述有彩色之補色，係藉由混合第一波長之光、以及 與前述第一波長不同之第二波長之光所形成，前述選擇散 亂裝置係至少含有將前述第一波長之光散亂之著色粒子， 以及使前述第二波長之光散亂之著色粒子。 此外，有關申請專利範圍第1 〇項之圖像顯示裝置係爲， 在上述發明之中，其中，前述選擇散亂裝置係含有著色粒 子，爲在低階調顯示時，散亂直接形成進行顯在化之有彩 色之補色的單色光。 此外’有關申請專利範圍第11項之圖像顯示裝置係爲， 在上述發明之中，其中，前述著色粒子係藉由調整至少一 方之粒徑與折射率，而對於對象波長之光來訂定散亂之比 例。 此外，有關申請專利範圍第1 2項之圖像顯示裝置係爲， 在上述發明之中，其中，前述選擇散亂裝置係以含有接著 性材料所形成，且配置在前述對向基板與前述第二偏光板 之間、固定前述對向基板與前述第二偏光板。 此外，有關申請專利範圍第1 3項之圖像顯示裝置係爲， 在上述發明之中，其中，前述選擇散亂裝置係以含有接著 性材料所形成，且配置在前述陣列基板與前述第一偏光板 之間、固定前述陣列基板與前述第一偏光板。 -13- 200409999 此外，有關申請專利範圍第1 4項之圖像顯示裝置係爲， 在上述發明之中，其中，使前述選擇散亂裝置配置在前述 對向基板或是前述陣列基板之內表面上，而將與前述液晶 層之間的界面平坦化。 此外，有關申請專利範圍第1 5項之圖像顯示裝置係爲， 在上述發明之中，其中，前述陣列基板係具備有：配置成 對應於顯示元件之畫素電極、控制供給至前述畫素電極之 電位的切換元件、控制該切換元件之驅動狀態的掃描線、 經由前述切換元件而對於前述畫素電極供給電位的信號 線。 此外，有關申請專利範圍第1 6項之圖像顯示裝置係爲， 在上述發明之中，其中，前述陣列基板更具有配置成對應 於前述畫素電極的共通電極，對於前述液晶層而基於前述 畫素電極與前述共通電極之間的電位差，在與前述陣列基 板表面平行方向上產生電場。 此外，有關申請專利範圍第1 7項之圖像顯示裝置係爲， 在上述發明之中，其中，更具備有供給透過前述液晶層內 之光的背光燈光源。 【實施方式】 以下，參照圖面，針對本發明之實施例的圖像顯示裝 置進行說明。此外，須注意的是圖面係僅供說明顯示，與 實際產品仍有所不同。再者，即是在圖面相互之間，當然 亦包含有相互尺寸之關係或比例不同的部分。此外，在以 下之實施例中，在圖像顯示裝置中爲具有IPS型構造，雖 -14- 200409999 是將具備有採用偏光面爲相互正交之兩片的偏光板、亦爲 具備有直交偏光柱（Cross-nicol)之構造爲例而進行說明， 不過，如後所述，須注意的是並非限定在該種構造之圖像 顯示裝置。 〔實施例1〕 首先，針對有關本發明之實施例1之圖像顯示裝置進 行說明。有關本實施例1之圖像顯示裝置係爲，所具有之 構造爲具備有彩色濾波器，係在分別具有指定之偏光特性 的兩片之偏光板之間，具有透過已對應於R、G、B之波 長之光的濾波器部。濾波器部係已分別包含指定之著色粒 子所形成，在透過對應波長之光的同時，亦具有由偏光板 之構造等所造成、在低階調顯示時進行顯在化，而使形成 有彩色之補色之波長之光的對比降低的機能。藉由使對比 降低而在低階調顯示時，亦可藉由一定的比例而形成爲使 形成補色之光釋出至外部，抑制在形成習知問題中所造成 之低階調顯示時的彩度、色相之變動，而可獲得高品質之 影像顯示。 第1圖所示係有關本實施例1之圖像顯示裝置之構造 的模式圖。如第1圖所示，有關本實施例1之圖像顯示裝 置所具有之構造爲，具有已配置指定之電路元件的陣列基 板1、以及對於陣列基板1爲被對向配置的對向基板2， 在陣列基板1與對向基板2之間爲已封入包含具有指定之 配向性之液晶分子的液晶層3之構造。此外，在陣列基板 1以及對向基板2之中，在與液晶層3接觸之內表面對向 200409999 之各個外表面上，係配置有相互之偏光面爲形成正交狀之 偏光板5、6。再者，在對向基板2與液晶層3之間配置 有彩色濾波器4，對於指定波長之光成分爲具有透過以及 散亂之機能。 陣列基板1以及對向基板2係藉由透明的基板所形成， 因應需要而具有已配置指定之電路元件之構造。第2圖係 針對配置在陣列基板1之表面上之配線構造所示的等效電 路圖。如第2圖所示，陣列基板1係如同畫素電極9 a至 9c所不’使畫素電極被配置成矩陣狀，在其各個周圍上 具有已配置指定之電路兀件之構造。此外，在下述中，爲 將各個畫素電極以及其周邊電路元件總稱爲副畫素，將分 別對應於R、G、B之三個副畫素總稱爲顯示畫素。此外， 配置在陣列基板上之各個畫素電極以及周邊電路元件之構 造、配線態樣係在各個副畫素中係爲相同，因此，以下係 總稱爲「畫素電極9」、「共通電極1 〇」而進行說明。此外， 有關於具備在副畫素之薄膜電晶體1 1方面，因缺乏區別 源極電極與汲極電極之必要性，故而除了閘極電極以外， 係將兩個電極統稱爲源極/汲極電極。 在畫素電極9附近，係配置有與畫素電極9成爲對狀 而產生電場之共通電極1 0、以及對於畫素電極9而作爲 切換元件之機能的薄膜電晶體1 1，共通電極1 0係藉由電 位供給電路（省略圖示）而供給略爲一定之電位。此外， 使薄膜電晶體1 1之一方的源極/汲極電極連接至畫素電 極9，另一方之源極/汲極電極係位於畫素電極9附近， -16- 200409999 而連接至於縱向延伸之信號線1 2。再者，薄膜電晶體11 之閘極電極係位於畫素電極9附近，而連接至於橫向延伸 之掃描線1 3。 信號線1 2以及掃描線1 3係分別被連接至指定之驅動 電路（省略圖示），具有藉由該驅動電路而供給對應於顯 示影像之電位的構造。掃描線1 3係亦連接至構成副畫素 之薄膜電晶體1 1之閘極電極，因此，以掃描線1 3而使閘 極電位產生變化，藉此而控制作爲切換元件之機能的薄膜 電晶體1 1之驅動狀態。具體而言，由掃描線1 3施加指定 之電位而使薄膜電晶體1 1形成開啓狀態，經由薄膜電晶 體1 1而由信號線1 2對於畫素電極9爲因應於顯示色的階 調來供給指定之電位。因共通電極1 〇係維持略爲一定之 電位，故而在畫素電極9與共通電極10之間爲產生因應 於電位差之電場。藉由該電場而使位在陣列基板1上之包 含於液晶層3中的液晶分子之配向受到控制，由於第1圖 所示之背光模組7通過偏光板6而射入至液晶層3之光係 依據以電場所控制之液晶分子的配向狀態，使偏光面僅旋 轉指定角度而輸出至偏光板5上。並且，藉由彩色濾光器 而使分別對應於R、G、B之波長之光透過在每一個對應 於副畫素之區域上後，便射入至偏光板5。偏光板5係具 有指定之偏光面，在由液晶層3所輸出之光中，爲僅透過 與偏光板5之偏光面一致之偏光成分，因此，透過偏光板 5之光的強度係依存於在液晶層3中之旋轉角。從而，藉 由控制施加至畫素電極9之電位而可控制輸出至外部之光 -17- 200409999 的強度，且進行畫素顯示。 其次，針對彩色濾波器4進行說明。彩色濾波器4係 爲，使分別對應於R、G、B之波長之光透過在每一個對 應於副畫素之區域，同時，所具有之機能爲散亂具有一定 比例之光。第3圖所示係爲彩色濾波器4之構造的模式圖。 彩色濾波器4係如第3圖所示，在對應於副畫素之各個區 域上爲具有分別對應於R、G、B的濾波器部4r、4g、4b， 該等濾波器部4r、4g、4b之對向爲具有對應於顯示畫素、 且配置成矩陣狀之構造。此外，濾波器部4r、4g、4b係 將透明樹脂等作爲母材而形成爲分別包含有著色粒子 14r、14g、14b。著色粒子 14r、14g、14b係具有透過分 別對應於R、G、B之波長之光的機能，同時具有將該光 因應於粒徑而以指定之比例來進行散亂的機能。在此，於 本實施例1中，著色粒子14r、14g之粒徑係被設定成形 成爲大於著色粒子1 4b之粒徑，且使彩色濾波器4形成對 比爲R: G: B=0.45: 0.45: 1之構造者爲佳。在此，所 謂的對比係意味著在指定波長之光中的對比値之比，對比 値係意指對於具有單一之偏光面之射入光，藉由各濾波器 部而未散亂狀的輸出同一偏光面之光之強度的比例。一般 而言，隨著著色粒子之粒徑增大，所散亂之光的比例將會 提高，造成對比値之降低。因此，藉由調整著色粒子1 ΑΙΜΕ 、 1 4b 之粒徑 ，而 使濾 波器部 4r 、 4g 、 4b 之對 比値受 到控制，進而可實現所期望之對比。 其次，針對在低階調顯示以及高階調顯示時之彩色濾 -]8- 200409999 波器4之作用而參照第4圖以及第5圖進行說明。第4圖 模式圖係爲表示作爲低階調顯示之例，爲在進行黑色顯示 時，用以說明透過已對應於R、G、B之波長之光的成分 之態樣。此外，在以下之說明中，爲了容易理解而僅針對 於黑色以及白色之例來進行說明，不過，一般針對於有彩 色當然亦爲成立。此外，於第4圖所示之偏光狀態Ab至 偏光狀態Eb係表示對應於B之波長者，同樣地，偏光狀 態至偏光狀態&係表示對應於R之波長者，偏光狀態 Ag至偏光狀態Eg係表示對應於G之波長者。 首先，由背光模組7所輸出之白色光係混合具有各種 偏光面之光，整體而言，形成無偏光狀態之偏光狀態Ab 至偏光狀態Ag之光係射入至偏光板6。偏光板6係在以 虛線所示之方向（以下，稱之爲「橫向」）上爲具有偏光 面，係僅透過具有與偏光板6之偏光面一致之偏光面的光 成分。因此，使如第4圖所示之僅在橫向之偏光面具有的 偏光狀態Bb至偏光狀態Bg之光由偏光板6射出、且射入 至液晶層3。 換言之，在進行Normally Black模式之圖像顯示裝置 的情況下，於進行黑色顯示時係並未將電位付與至畫素電 極，因此，被包含在液晶層3之液晶分子係維持配向於同 一方向之狀態。從而，射入至液晶層3之光係爲，在通過 液晶層3中之時，並未特別受到來自液晶分子之影響而依 舊維持相同的偏光面來進行，且射出具有與偏光狀態Bb 至偏光狀態B g相同之偏光狀態C b至偏光狀態C g之光， -19- 200409999 而射入至彩色濾波器4。 已射入至彩色濾波器4之光係承受不同於對應至B之 波長之光、以及不同於對應於R、G波長之光的作用。具 體而言’已對應於B之波長之光係幾乎以維持其狀態而透 過濾波器部4b中，相對於此，已對應於R、G之光係在 濾波器部4r、4g中以一定的比例散亂。從而，所射出之 偏光狀態1^、偏光狀態Dg2光爲產生具有與射入時之偏 光面垂直方向（以下，稱之爲「縱向」）之偏光面的光成 分。如前述說明’在濾波器部4b中所含有之著色粒子1 4b 係與在濾波器部4r中所含有之著色粒子1 4r、在濾波器部 4g中所含有之著色粒子14g相較之下爲較小，因此對應 於B之波長之光係藉由著色粒子1 4 b而降低受到散亂之 比例。因此，係可無視於因散亂所產生之具有縱向偏光面 之光成份的產生，而使偏光狀態Db之光射出。另一方面， 對應於R、G之波長之光係爲，著色粒子14r、14g爲具 有指定之粒徑，因此，爲以一定之比例所散亂、具有縱向 偏光面之光成分係使以一定之比例所產生、而射出偏光狀 態Db至偏光狀態Dg之光。 並且，偏光狀態Db至偏光狀態Dg之光係分別被射入至 偏光板5。偏光板5係爲，除了具有縱向之偏光面之外， 大部分偏光狀態、偏光狀態Dg之光爲具有橫向之偏光 面，因此大部分並未透過，而是僅通過具有在透過彩色濾 波器4時因散亂所產生之縱向偏光面的光成分。此外，偏 光狀態D b之光係爲，原本，因幾乎未具有縱向偏光面之 -20- 200409999 光成分，故而在理論上係未透過偏光板5，不過，如同作 爲習知技術之問題點所說明，由於偏光板5構造上之理由 而造成在實際上爲僅透過一定之量。從而，有關對應於R、 G之波長之光，爲使具有指定強度之偏光狀態E〆偏光狀 態Eg之光分別射出，有關對應於B之波長之光，爲使具 有指定強度之偏光狀態Eb之光射出。 如上述說明，在有關本實施例1之圖像顯示裝置中， 即使在黑色顯示之際，具有即使僅有些許對應於R、G之 波長之光亦進行透過之構造，該光之強度係藉由具有在彩 色濾波器4之透過時因散亂而產生之縱向偏光面的光成分 之量來決定。產生散亂的比例係以對應於在分別對於R、 G中之濾波器部4r、4g所含有之著色粒子14r、14g之粒 徑來變化，因此，藉由將著色粒子14r、1 4 g以及著色粒 子14b之粒徑進行最佳化，而可將分別對應於R、G、B 之波長之光的強度形成略爲相等狀，且可抑制在黑色顯示 時之彩度的變動。 其次，作爲高階調顯示之例，爲針對在進行白色顯示 時之彩色濾波器4之作用，參照第5圖進行說明，在高階 g周顯不時爲顯不不致降低影像品質。此外，於第4圖所示 之偏光狀態Ab ’至偏光狀態Eb ’係表示有關對應於B之波 長之光的偏光狀態者，偏光狀態A /至偏光狀態E /、偏光 狀態Ag ’至偏光狀態Eg ’所示係分別對應於R、g之波長之 光的偏光狀態者。 首先’由背光模組7所輸出之白色光係形成爲具備各 200409999 種偏光成分之無偏光狀態，各個偏光狀態Ab ’至偏光狀態 Ag ’之光係被射入至偏光板6。偏光板6爲在橫向具有偏 光面，因而已射入之光爲僅通過橫向之偏光成分、射出偏 光狀態Bb’至偏光狀態Bg’之光、且射入至液晶層3。 在進行白色顯示時係使指定之電位供給至畫素電極 上，承受伴隨於此所產生之電場的影響，包含在液晶層3 之液晶分子的配向係被控制爲成向液晶層3下部與液晶層 3上部以90 °進行旋轉的狀態。從而，在橫向具有偏光成 分之偏光狀態Bb’至偏光狀態Bg’之光係依據在液晶層3 中行進而旋轉偏光面，具有縱向之偏光面的偏光狀態C b’ 至偏光狀態Cg ’之光係由液晶層3射出 '且射入至彩色濾 波器4。 彩色濾波器4係構成爲在濾波器部4 r、濾波器部4g 中所含有之著色粒子14r以及著色粒子14g之粒徑較大， 而在濾波器部4b中所含有之著色粒子1 4b之粒徑則形成 較小。因此，對應於R、G之波長之光係以濾波器部4r、 4g所散亂，以一定的比例產生具有橫向之偏光面的光成 分。另一方面，對應於B波長之光係爲，在濾波器部4b 中所散亂之比例較低，而幾乎未產生有具有橫向之偏光面 的光成分。因此，藉由通過彩色濾波器4，而射出以一定 的比例產生具有橫向之偏光成分之偏光狀態D /、偏光狀 態Dg5、以及僅具有縱向之偏光面的偏光狀態Db’之光， 且射入至偏光板5。 偏光板5係具有縱向之偏光面，因此，爲遮蔽具有橫 -22- 200409999 向偏光面之光成分，僅通過具有縱向偏光面之光成分。從 而，相對於偏光狀態D b ’之光幾乎全數通過，偏光狀態D /、偏光狀態Dg’之光係由以濾波器部4r、4g所散亂之光 成分遮蔽，僅通過具有縱向偏光面之光成分，而使各個偏 光狀態E b ’至偏光狀態Eg ’之光射出至外部。 在進行白色顯示時，爲局部遮蔽對應於R、G波長之光， 形成若干低於對應至漏出B之波長之光的強度。不過，在 低階調顯示時，係減小對應至B之波長之光，例如，在第 1 3 B圖之圖表的情況下，對應至B之波長之光係不超過射 入至偏光板6之光的0.15%程度。從而，即使針對於在獲 取彩度、色相之平衡上所需要之對應至R、G的波長之光’ 仍具有充分相等的強度，因此，以彩色濾波器4所散亂之 光成份的比例係爲整體之〇 · 1 5 %程度。因此，在進行白色 顯示時以偏光板5所遮蔽之光成份的比例亦形成爲0 · 1 5 % 程度，99.85 %之光係形成爲透過偏光板5。當對應至B 之波長之光射爲1 〇〇%透過的情況下爲形成R : G : B与1 : 1 : 1，在實用上之觀點來判斷並未造成問題。 其次，有關本實施例1之圖像顯示裝置所示係爲，於 實際上之低階調顯示時透過之光係爲不持有波長依存性 者。本案發明者們爲用以使對比形成爲R : G : B = 0.45 : 0.45 : 1之狀態，有關於圖像顯示裝置爲具有相較習知爲 減小著色粒子2 5 b之粒徑的彩色濾波器4，而將黑色顯示 時之透過光的波長依存性以數値計算來求出。第6圖所示 係爲該數値計算之結果的圖表，在第6圖中’實線係表示 >23- 200409999 計算結果’虛線係表示用以比較而採用習知構造的彩色濾 波器之圖像顯不裝置之透過光的波長依存性。由第6圖可 明顯得知，在有關本實施例1之圖像顯示裝置中，對應至 B之4〇Onm附近之波長頻帶附近之波長頻帶中，透過率係 降低至與其他波長相同程度爲止，在低階調顯示時亦不致 變動彩度而可顯示出高品質之影像顯示。 此外’本案發明者們係針對於顯示色之階調變化之顯 示特性的變動進行數値計算，而使有關本實施例1之圖像 顯示裝置可顯示出彩度、色相爲較習知之圖像顯示裝置更 爲安定的影像顯示。具體而言，爲針對於階調變動之色溫 度的變化、色度座標的變化、以及色度座標平面上之移動 距離進行數値計算，與有關習知之圖像顯示裝置之數値計 算結果進行比較。此外，在數値計算中，爲針對將有關本 實施例1之圖像顯示裝置中之各濾波器部的對比設爲尺： G : B = 0.4 5 : 0 · 4 5 : 1之情況下進行計算。另一方面，作 爲比較對像而進行數値計算之習知的圖像顯示裝置係爲， 在採用以 EBU( European Broadcasting Union)之基準作 爲依據之彩色濾波器的圖像顯示裝置中，爲針對將在彩色 濾波器中之對比爲R : G : B = 2 ·4 : 2.4 : 1者進行數値計 算。 第7圖所示係針對因應於階調變動之色溫度變化的圖 表。第7圖之縱軸係表示色溫度之變化量，橫軸係表示階 調之位準。此外，所謂的色溫度係指，依據蒲郎克（planck ) 之放射定律而基於由理想性黑體所發出之光之色彩與溫度 -24、 200409999 之間的關係，將色組成以溫度所表示者，其中，隨著色溫 度之上升，色組成係具有由紅色系統至青色系統之移動性 質。從而，色溫度之變化量爲易於得知顯示色之色相的變 動程度，色溫度之變化量爲跨越全階調而維持較低値的圖 像顯示裝置係評估爲具有可抑制色相變動之優越特性。此 外，橫軸之階調爲區分成2 5 0階段而顯示明亮度的位準， 在2 5 0位準時爲形成最大的明亮度。 在第7圖中，曲線1 i係爲，在作爲比較對象之習知之 圖像顯示裝置中，表示將色溫度之變化量ΔΚ的變動藉由 數値計算所求出之結果的曲線。此外，曲線12係爲，在 有關本實施例1之圖像顯示裝置中，針對色溫度之變化， 表示以數値計算所求出之結果的曲線。此外，曲線13係 爲，針對於有關作爲比較對象之習知之圖像顯示裝置，爲 表示實際測定色溫度之變化結果的曲線，其中，在與曲線 1 i比較後明顯可知，因數値計算之結果與實測値略爲一 致，故而在實際製作有關本實施例1之圖像顯示裝置之情 況下所獲得的實測値，係可推測爲與曲線形成爲同樣 的曲線。 在比較曲線h與曲線13後，任一階調係在1 00位準以 上之狀態中爲使色溫度之變化量△κ約略維持在〇、且顯 示出幾乎未產生有色溫度之變化。不過，當階調性成爲1 00 位準以下時，在各曲線中係開始產生差異，隨著階調之降 低，在曲線1,中之色溫度的變化量係急速的上升。另一 方面，曲線ι3係無關於階調而約略維持爲〇値，即使在 -25- 200409999 階調爲0的位準的狀態其色溫度的變化量也大略爲〇値。 因此，有關本實施例1之圖像顯示裝置係可無關於階調之 變化而維持一定之色溫度，其中，在低階調顯示時色相亦 幾乎未有所變化，而顯示出可進行高品質之影像顯示之優 點。一般在有關於色溫度之變化量方面，階調係以在3 2 位準以上、2000Κ以下者爲佳，再者，跨越全階調爲以200Κ 以下爲更佳。有關本實施例1之圖像顯示裝置係爲，不僅 是藉由最佳化對比而可充分滿足該等條件，此外，關於色 溫度之變化量係可發揮更佳優越的特性。 其次，參照第8圖，針對於階調之變化的色度座標之 變化進行說明。所謂的色度座標係爲，將以數値化顯示色 之色相、彩度者所獲得之X値、y値分別設爲X座標、y 座標者，其中，色度座標之變化係意味在顯示色中R、G、 B之比例的變化。從而，當以階調變動所造成之色度座標 之變化越小，則減小顯示色之色相、彩度之變化，而可獲 得高品質之影像顯示。在第8圖中，曲線14係對於作爲 比較對象之習知之圖像顯示裝置而以數値計算來求出色度 座標變化之曲線，曲線15係對於有關本實施例1之圖像 顯示裝置而以數値計算來求出色度座標變化之曲線。此 外，曲線16係爲在作爲比較對象之習知之圖像顯示裝置 中，表示實際測定因應於階調變化之色度座標之變化結果 的曲線。倘若分別將曲線14與曲線16比較後明顯可知， 即使是數値計算之結果與實測値爲具有些許偏差之物，係 顯示出略爲相同的傾向。從而，有關本實施例1之圖像顯 -26- 200409999 示裝置之色度座標之變化的實測値爲推測出表示有與曲線 15略爲相同之傾向。 分別將曲線14與曲線16比較後明顯可知，習知之圖像 顯示裝置係爲，色度座標爲跨越寬廣之範圍而進行變化， X値係由約0 · 2 2 5變動至約0 · 3左右，y値係由約〇 · 2 3變 動至約0 · 3 1。相對於此，在有關本實施例1之圖像顯示裝 置中，色度座標係幾乎未有所變化，而有關於X値以及y 値則維持略一定之値。從而，明顯可知在有關本實施例1 之圖像顯示裝置中，爲將對於階調變化之色度座標之變化 減至最小，對於階調變化爲維持顯示色呈現穩定之色相、 彩度。 其次，針對色度座標之移動距離參照第9圖進行說明。 在第9圖之圖表中，縱軸係爲色度座標在座標平面上移動 之變動量，亦即，爲表示針對於X値、y値而演算（X2 + y2 ) 1 / 2之結果，橫軸則表示階調之位準。此外，爲了比較， 而在各個曲線中將階調於2 5 0位準之狀態下的座標作爲基 準、導出移動距離。在第9圖中，曲線17所示係爲在作 爲比較對象之習知之圖像顯示裝置中之數値計算結果的曲 線，曲線18所示則爲在有關本實施例1之圖像顯示裝置 中之數値計算結果的曲線。此外，曲線19係爲在習知之 圖像顯示裝置中，表示針對於由實測値所導出之色度座標 之變化量的曲線。倘若分別將曲線17與曲線19比較後明 顯可知，在高階調顯示中係爲具有些許偏差者，而在低階 調顯示、特別是階調爲在5 0位準以下之中，數値計算之 -27- 200409999 結果與實測値爲精度良好的一致性。從而，在關於本實施 例1之圖像顯示裝置中之實測値、特別在低階調顯示中， 亦可推測出獲得與曲線18略爲相同之値。 倘若分別將曲線17與曲線19比較後明顯可知，當階調 爲100位準以上之情況下，於各個圖像顯示裝置中之色度 座標之移動距離係相當的低，得以抑制至於實用上不致有 所問題之程度。另一方面，由曲線17明顯得知，在習知 之圖像顯示裝置中，當階調形成爲1 0 0位準以下時則緩緩 增加色度座標之變化量，在階調爲0位準方面，移動距離 則形成爲約0 · 0 9之値。另一方面，在有關於本實施例1 之圖像顯示裝置中，如曲線18所示，即使階調在1 〇 〇位 準以下，色度座標之移動距離係被抑制成相當低之値，在 全數階調中爲形成略爲0之値。此係爲意味著有關本實施 例1之影像顯示裝置爲無關階調之變化，而使顯示色維持 在略爲相同之彩度者，即使在低階調顯示時亦可顯示出優 越品質之影像顯示。 以上，由在第6圖至第9圖所示之數値計算之結果， 明顯可知有關本實施例1之圖像顯示裝置係針對於階調變 化之色溫度的變化、色度座標之變化、以及變動距離方面， 在與習知之圖像顯示裝置比較之下係維持極低之値。色溫 度以及色度座標的變化係形成爲表示色之彩度之變動程度 的指標，因此由該數値計算之結果，有關本實施例1之圖 像顯示裝置係顯示出對於階調變動之彩度的變動爲較低。 從而，有關本實施例1之圖像顯示裝置並非是藉由階調變 -28- 200409999 動來變動顯示色之彩度，而即使在低階調顯示時亦可防止 青色化之色顯示。 此外’在於第6圖至第9圖所示之數値計算中，針對 於在彩色濾波器中之對比雖是設爲r : G : B二〇 . 4 5 : 0.4 5 : 1，不過，並非僅限定於該値。具體而言，例如在本實施 例1之中，關於R、G之對比値係爲，若是低於B之値時， 則在低階調顯示時爲可較習知爲更加抑制有彩色之顯在 化。此外’較佳爲當B之對比値設爲1之情況下，藉由形 成選擇散亂層以使R、G之對比値雙方形成小於〇 · 6而可 更加有效的抑制有彩色之顯在化。 此外’有關本實施例1之影像顯示裝置係爲，藉由控 制構成彩色濾、波器4之著色粒子1 4 r、1 4 g、1 4 b之粒徑， 而在低階調顯示時抑制顯在化之彩度、色相之變動。有關 形成著色粒子14r、14g、14b之材料，爲可使用作爲習知 之彩色濾波器之材料所採用之物，其中，無須選擇特別的 材料。此外’調整著色粒子之粒徑之後的彩色濾波器之製 造程序係可進行與習知相同的程序，因此在製造有關本實 施例1之圖像顯示裝置中，爲可藉由與習知同等之製造成 本來進行製造。 〔實施例2〕 其次，針對有關實施例2之圖像顯示裝置進行說明。 有關實施例2之圖像顯示裝置係爲，用以抑制在低階調顯 示時顯在化之色相、彩度之變動，爲具有與彩色濾波器分 開之選擇散亂層，其係補償起因於圖像顯示裝置之構造而 -29- 200409999 產生之色相、彩度之變動而將一以上之波長之光進行散 亂。 第1 0圖所示係有關本實施例2之圖像顯示裝置之整體 構造的模式圖。有關實施例2之圖像顯示裝置係如第1 0 圖所示，具備有：具有指定之電路元件的陣列基板1、對 向配置於陣列基板1的對向基板2、被封入至陣列基板1 以及對向基板2之間的液晶層3、配置在對向基板2之外 表面上偏光板5、配置在陣列基板1之外表面上之偏光板 6。此外，在液晶層3與對向基板2之間，係配置有彩色 濾波器1 5以及選擇散亂層1 6。在本實施例2之中，彩色 濾波器1 5係用以透過始終分別對應於R、G、B之波長之 光者，而並非如實施例1之用以調整特定波長之光的散亂 程度。此外，在本發明之實施例2中，爲針對於與有關實 施例1之圖像顯示裝置之相同部分付與相同的名稱、符 號，而有關於未特別提及之部分之所有機能係與實施例1 之情況相同。 第1 1 A圖至第1 1 C圖所示係有關構成本發明之實施例 2之圖像顯示裝置之選擇散亂層1 6之構造的模式圖。選 擇散亂層1 6係爲，爲了抑制在低階調顯示時顯在化之色 相、彩度之變動，而用以將對應於顯在化之色彩的補色之 一以上之波長之光選擇性地散亂。以下，針對第1 1 A圖至 第1 1 C圖所示構造依序進行說明。 第1 1 A圖所示之構造係爲’使構成在實施例1中之彩 色濾波器4的著色粒子14r、Mg、14b以一致狀地分散至 -30- 200409999 各個由透明樹脂所形成之母材中。在著色粒子1 4ι·、1 4g、 1 4b之粒徑以及選擇散亂層1 6中，有關對應於R、G、B 之各波長之光的對比等係與實施例1爲相同’在此省略說 明。 在有關本發明之實施例2之圖像顯示裝置中，係不同 於彩色濾波器1 5，爲構成爲具備有在低階調顯示時，抑 制進行顯在化之彩度、色相之變動的選擇散亂層1 6。選 擇散亂層16係藉由作爲具備有著色粒子14r、14g、；Ub 之構造，依據與實施例1相同的原理，具有在低階調顯示 時抑制顯在化之彩度、色相之變動的機能，藉由具備有該 選擇散亂層1 6，有關本實施例2之圖像顯示裝置係可進 行高品質之彩色影像之顯示。 其次，針對於第1 1 B圖所示之構造進行說明。在第1 1 B 圖所示之構造中，選擇散亂層1 6係僅具備有著色粒子 14r、14g，且具有未包含著色粒子14b之構造。在使偏光 面相互正交而配置有偏光板5、6的情況下，於低階調顯 示時顯示色係整體性的顯示有青色化，不過，爲了補償該 彩度、色相之變動，亦可構成爲在低階調顯示時射出對應 於作爲青之補色的黃色之波長之光。並且，爲了顯示作爲 補色之黃色，倘若可將對應於R、G之波長之光僅進行略 爲相同之量的散亂時即可。在實施例2之中，選擇散亂層 1 6係無須作爲彩色濾波器之機能，而不同於使選擇散亂 機能具備在如實施例1中之彩色濾波器中的情況，而可作 爲未包含有著色粒子14b之構造。 200409999 其次，針對於第11 C圖所示之構造進行說明。於第1 1 c 圖所示之構造中，選擇散亂層1 6係如第1 1 A圖、第1 1 B 圖所示，並非含有對應於多數相異之波長之光的著色粒 子，而是具有僅含有對應於單色光之著色粒子17的構造。 在此，所謂的單色光係爲一種具有跨越指定範圍之波長成 分、亦包含有相當於色彩學上之單色光者，而並非僅爲以 1波長所形成之光。如上所述，在低階調顯示時變動顯示 色之彩度、色相而顯示出青色化之色彩的情況下，亦可射 出對應於作爲補色之黃色的波長之光，因此，亦可構成爲 無須使多數波長之光散亂、進而射出對應於黃色之單一波 長之光的構造。在本實施例2中，因係爲一種另外設置彩 色濾波器1 5之構造，因此，選擇散亂層1 6係無須具有用 以進行彩色顯示而使對應於R、G、B之波長之光透過的 機能。從而，係可含有直接散亂對應於補色之單一波長之 光的著色粒子17，在母材中藉由僅含有單一種類之著色 粒子，而可構成選擇散亂層1 6。 其次，參照第1 2 A圖以及第1 2 B圖，針對於配置第1 1 A 圖至第1 1 C圖中所例示之選擇散亂層i 6的場所之例進行 說明。在第1 1 A圖之例中，有關於選擇散亂層1 6係以更 包含有接著性材料所形成，亦具有作爲接著對向基板2與 偏光板5之接著材料的機能。在本實施例2中.，選擇散亂 層1 6係如第1 1 A圖至第i 1 C圖所例示，具有將著色粒子 散亂成一致狀的構造。從而，如同在彩色濾波器中持有選 擇散亂機能的情況，係無須控制著色粒子之分散區域，而 -32- 200409999 亦可有將選擇散亂層1 6作爲接著層之機能。此外，藉由 使在選擇散亂層1 6中含有接著性材料，而亦可使選擇性 地散亂層1 6具有固著偏光板6與陣列基板1之間的機能。 再者，爲採用接著性之材料以作爲使著色粒子散亂之媒 體，而亦可作爲省略透明樹脂等母材之構造。 在第1 1 B圖之例中，爲將選擇散亂層丨6配置在陣列基 板1與液晶層3之間的界面，且一倂持有對於選擇散亂層 1 6爲將該界面平坦化之機能。亦如第2圖所示，在陣列 基板1上係形成有指定之電路構造，陣列基板1與液晶層 3之間界面的平坦性將由於該電路構造而造成混亂不均。 在另一方面，由可進行高品質之影像顯示之觀點來判斷， 因界面之平坦性混亂不均而造成液晶層3之厚度變動故爲 不佳，一般，在陣列基板1之表面上爲具有配置平坦化層 之構造。藉由在該平坦化層中含有指定之著色粒子，而可 實現均有作爲選擇散亂層之機能、以及作爲平坦化層之機 能的選擇散亂層1 6。而在對向基板2與液晶層3之間的 界面亦以平坦者爲佳，因此，亦可作爲在該界面上配置一 倂具有平坦化機能之選擇散亂層1 6的構造。 在有關實施例2之圖像顯示裝置中，選擇散亂層1 6係 具有將指定之著色材料一致地分散至母材中的構造，因 此，除了可容易製造的同時，如第1 2 A圖以及第1 2 B圖 所示，藉由適當的選擇所分散之母材，而可具有除了選擇 散亂以外之機能。而藉由適當的選擇母材，除了著色粒子 之分散的有無，圖像顯示裝置之構造係形成略與習知者相 -33- 200409999 同，即使不伴隨於設計變更以及製造程序之變更，在低階 調顯示時亦可實現高品質之彩色影像之顯示的圖像顯示裝 置。 以上，爲跨越實施例1以及實施例2而針對本發明之 內容進行說明’不過’本發明並非爲被限定在上述記載之 內容中，若是相關業者則有可能推想到各種實施例、變形 例。例如，針對於偏光板5、6之配置，亦可設置成相互 之偏光面爲形成平行、亦即爲設置成平行偏光鏡 (parallely-nicol)之構造。如先前說明所述，在相互之 偏光面爲平行之情況下，在低階調顯示時，爲藉由使對應 於黃色之波長之光射出而變動顯示色之彩度、色相。因此， 藉由構成選擇散亂層而取消由於該光所造成之彩度、色 相，而可有效果的抑制在低階調顯示時之彩度、色相之變 動。 具體而言，在平行偏光鏡之構造的情況下，例如在將 對應於青色（其係作爲在低階調顯示時，形成進行顯在化 之彩度、色相之變動原因之有彩色的黃色之補色）之波長 之光以一定的比例散亂，藉此爲可實現高品質之影像顯 示。亦即，例如，在實施例1之構造中，係爲藉由增大散 亂對應於B之波長之光的著色粒子1 4b之粒徑，而在低階 調顯示時有效地將對應於B之波長之光以一定比例射出的 構造。此外，即使針對於在低階調顯示時造成進行顯在化 之彩度、色相之變動的原因，本發明係亦可適用於青色、 黃色以外之任何顏色的情況，將對應於造成顯在化之彩 -34- 200409999 度、色相變動原因之有彩色之部分的波長之光，以彩色濾 波器4或是選擇散亂層丨6進行散亂，藉此，爲可抑制在 低階調顯示時之彩度、色相之變動。 此外，在彩色濾波器4、選擇散亂層1 6中，雖是藉由 控制著色粒子之粒徑來調整散亂之程度，不過，亦可爲藉 由適當的選擇著色粒子之材料、依據折射率之差來調整散 亂程度的構造。隨著著色粒子之折射率的增大而增大所散 亂之光的程度。此外，有關於散亂之程度，亦可作爲以變 化著色粒子之粒徑以及折射率之雙方來進行調整的構造。 再者，於實施例1以及實施例2之中，雖是將IPS型 之構造爲例而進行說明，不過，即使在使用其他驅動方式 之情況下，本發明亦可發揮有利之功效。例如，有關於圖 像顯示裝置方面，其構造爲共通電極係被配置在對向基板 側，而對於液晶層爲將電場施加至與陣列基板表面垂直之 方向上。此外，在實施例1以及實施例2之中，雖是採用 薄膜電晶體以作爲開關元件，不過，例如亦可爲採用有MIM (Metal Insulator Metal)驅動裝置等之構造。再者，亦 可採用使用被動矩陣方式之構造，而不是利用切換元件之 主動矩陣方式。在低階調顯示時，顯示有彩色之習知問題 點係並非爲被限定在IP S型構造，而是產生在配置多數偏 光板之全數圖像顯示裝置，藉由配置選擇散亂層而用以可 解決該等問題。 此外，亦可採用省略背光模組、將太陽光等外部光作 爲光源之反射方式，或是亦可採用半透過方式。 -35- 200409999 〔發明之效果〕 如上述說明，若藉由本發明時，並非僅透過指定波長 之光成分，所具備之彩色濾波器係爲在低階調顯示時進行 顯在化，而形成造成彩度以及/或色相變動原因之有彩色 之補色之一以上的波長之光成分選擇性地散亂，因此，在 低階調顯示時之顯示特性之變動原因所造成之有彩色的補 色爲以一定的比例所輸出，藉由輸出該補色爲可達到抑制 顯示特性之變動的效果。 【圖式簡單說明】 第1圖所示係有關實施例1之圖像顯示裝置之構造的 模式圖。 第2圖所示係配置在陣列基板上之電路構造的等效電 路圖。 第3圖所示係彩色濾波器之構造的模式圖。 第4圖所示係在低階調顯示時用以說明彩色濾波器之 作用的模式圖。 第5圖所示係在高階調顯示時用以說明彩色濾波器之 作用的模式圖。 第6圖所示係在低階調顯示時之中，針對於光透過率 之波長依存性，比較有關實施例1之圖像顯示裝置與習知 之圖像顯示裝置的圖表。 第7圖所示係針對伴隨於階調變化之色溫度的變化， 比較有關實施例1之圖像顯示裝置與習知之圖像顯示裝置 -36- 200409999 的圖表。 第8圖所示係針對伴隨於階調變化之色度座標的變化， 比較有關實施例1之圖像顯示裝置與習知之圖像顯示裝置 的圖表。 第9圖所示係針對伴隨於階調變化之色度座標平面上 的變位量，比較有關實施例1之圖像顯示裝置與習知之圖 像顯示裝置的圖表。 第1 〇圖所示係有關實施例2之圖像顯示裝置之構造的 模式圖。 第11A圖至第lie圖所示係選擇散亂層之模式圖。 第12A圖、第12B圖所示係配置選擇散亂層之位置的 模式圖。 第1 3 A圖所示係習知之圖像顯示裝置之構造的模式 圖’第13B圖所示係在習知之圖像顯示裝置中，表示在低 階調顯示時中之光透過率之波長依存性的圖表。 【主要部分之代表符號說明】 1 :陣列基板 2 :對向基板 3 :液晶層 4 :彩色濾波器 4r、4g、4b :濾波器部 5、6 :偏光板 7 :背光模組 -37- 200409999 9a :畫素電極 9 :畫素電極 1 〇 :共通電極 1 1 :薄膜電晶體 1 2 :信號線 1 3 :掃描線 14i·、14g、14b:著色粒子200409999 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to an image display device for performing color image display, and in particular to an unevenness in chroma and hue of a display color by a change in tone. Suppress to an unrecognizable level, and an image display device that can display high-quality color images. [Prior art] As an image display device, it is known to control the light transmittance of each display pixel by controlling the alignment of liquid crystal molecules, and to provide a color filter with a specified transmission wavelength characteristic. An image display device that performs color image display through. This type of image display device has advantages such as a thinner structure and lighter weight as compared with those using a CRT, etc. At the same time, it has advantages such as reduction in power consumption. Fig. 1A is a schematic diagram showing the structure of an image display device using a conventional liquid crystal material. As shown in FIG. 13A, a conventional image display device includes an array substrate 1101 having various circuit elements arranged thereon, and an opposite substrate 10 arranged to face the array substrate 1101. 2. The liquid crystal layer 103 enclosed between the array substrate 101 and the counter substrate 102 has a structure on the outer surfaces of the array substrate 101 and the counter substrate 1 C2, each of which has a designated polarizing surface. Of the polarizers 1 04, 1 05. In addition, on the lower side of the array substrate 101, a backlight module 106 arranged opposite to the liquid crystal layer 103 and configured to allow planar white light to be incident thereon is arranged. In addition, the color filter 107 disposed between the polarizing plate 104 and the counter substrate 102 has a transmission characteristic of 200,999,999 which is corresponding to the three colors of R (red), G (green), and B (blue). R, G, B three colors can display color images. The operation of a conventional image display device will be described. First, the planar light output from the backlight module 106 is incident on the polarizing plate 104 arranged on the outer surface of the array substrate 100, and only the polarized light that has been combined with the polarizing surface of the polarizing plate 104 And only the single polarized light component is input to the liquid crystal layer 103. Pixel electrodes are arranged on the array substrate 101 to correspond to the display pixels, and they are subjected to the influence of the electric field caused by the potential supplied to the pixel electrodes. The liquid crystal layer 103 has a polarization plane that rotates the input light only. Specified angle for output function. Therefore, by adjusting the potential of the pixel electrode, only the light that rotates the polarizing plane at a desired angle is input to the polarizing plate 105. The polarizing plate 105 has the same designated polarizing surface as the polarizing plate 104, so The light entering the polarizing plate 105 passes only a polarizing component having a polarizing surface that matches the polarizing surface of the polarizing plate 105. Here, the direction of the polarizing surface of the light input to the polarizing plate 105 is determined by the rotation angle of the polarizing surface in the liquid crystal layer 103. Therefore, by controlling the potential of the pixel electrode disposed on the array substrate, The intensity of the light transmitted through the polarizing plate 105 can be adjusted. In addition, the light that has been output from the liquid crystal layer 103 passes through the color filter 107, thereby transmitting light having wavelengths corresponding to R, G, and B, and displaying the light that has passed through the polarizing plate 105. image. Regarding the mechanism for applying an electric field to the liquid crystal layer 103, there are various methods proposed by the conventional system. For example, in recent years, there has been a structure in which not only pixel electrodes but also common electrodes are arranged on the array substrate 101. 200409999 applies a specified potential difference between the pixel electrodes and the common electrodes, and applies a horizontal The liquid crystal layer 103 is subjected to an electric field, in other words, it is a type of image display device having a lateral electric field effect (In Plane Switching, hereinafter referred to as "IPS") type. IPS-type image display devices have attracted particular attention in recent years due to their excellent voltage-sustaining characteristics and wide viewing angles (see, for example, Japanese Patent Laid-Open Publication No. 9-1 of Patent Document 1). 0 1 5 3 8). [Summary of the Invention] [Problems to be Solved by the Invention] However, in a conventional image display device, when performing color display with different tones, it is not only brightness, chroma, or / and hue due to changes. It has the problem that the image quality is reduced. That is, for example, when the intensity ratio of R, G, and B is in a certain display color, in order to gradually reduce the tone, it is known that the intensity of R, G, and B is changed in accordance with the decrease of the tone. ratio. Specifically, in an image display device having two polarizing plates having mutually orthogonal polarizing surfaces, a decrease in brightness is reported, that is, a phenomenon in which the display color gradually becomes cyan during low-tone display. In addition, in an image display device provided with polarized lights that are parallel to each other, it is known that when performing low-level display, in order to reduce the intensity of the wavelength component corresponding to cyan, yellow is used to supplement the color. existence). As shown in Fig. 13B, the conventional image display device including two polarizing plates having polarizing surfaces orthogonal to each other is a wavelength-dependent property that shows the transmittance at the time of black display. In black display, the transmittance is ideally spanning the entire wavelength range and forming 0%. However, 200409999 is actually the transmittance of light corresponding to a wavelength near 400nm as shown in Figure 13B. It is a plutonium having a light component higher than other wavelengths. In the case where there is no change in tone, by setting a filter that shields light that has already corresponded to other cyan wavelengths at a specified ratio, the wavelength dependence of this transmittance can be solved. However, in a conventional image display device, the transmittance of light corresponding to a cyan wavelength is gradually increased according to the shift from a high-order display to a low-order display. Therefore, in the case where an optimized filter is used for low-order display, it is formed to reduce the intensity of light corresponding to a cyan wavelength to light lower than that of other wavelengths during high-order display, and The yellow color used to supplement the color becomes obvious, and then the chroma and hue of the displayed color are changed, so it is not appropriate. The change in chroma and hue during low-order display is presumed to be due to the structure of the liquid crystal layer and the polarizer, especially the structure of the polarizer. The unevenness of chroma and hue caused by the liquid crystal layer can be reduced to a certain extent by controlling the refractive index Δ η ′ of the liquid crystal molecules included in the liquid crystal layer and the thickness d of the liquid crystal layer. Specifically, the structure that reduces the product of the refractive index Δη and the thickness d can reduce the wavelength dependence of the transmitted light in the liquid crystal layer, while suppressing the change in the maximum wavelength of the transmittance. However, in order to achieve high-speed response to an input video signal and low power consumption, a liquid crystal material having a large refractive index Δ 1Ί must be used, and there is a limit in reducing the thickness d. Therefore, by adjusting the refractive index Δη and the thickness d, the unevenness of chroma and hue cannot be reduced to an unrecognizable level. In addition, the non-uniformity of the chromaticity caused by the polarizing plate has not been proposed as an effective solution at the current time of 200409999. The polarizing plate used in the past is formed by mixing iodine having an aeolotropic molecular structure into a solvent and forming the plate into a plate shape. The unevenness of chromaticity is presumed to be caused by iodine. However, at the current point in time, no practical material has been proposed to replace iodine, and in practice, there is no material other than iodine to form a polarizing plate. Therefore, at the current point in time, it is difficult to Improve the polarizing plate, and it is difficult to reduce the unevenness of chroma and hue until it cannot be discerned. The present invention has been made in view of the problems of the above-mentioned conventional technology, and an object thereof is to provide an image display device which reduces the unevenness of chromaticity and hue of a display color to the extent that it cannot be discerned by changing the tone. , And can display the color image without quality. [Means to Solve the Problem] In order to achieve the above object, the image display device related to the first patent application is an image display device including an array substrate and a counter substrate, and is enclosed in the array. The liquid crystal layer between the substrate and the opposite substrate is displayed according to the electro-optical effect of the liquid crystal layer. The image display includes a first polarizing plate, and the liquid crystal layer is disposed on the array substrate side and has A first polarizing characteristic; a second polarizing plate 'is disposed on the opposite substrate side to the liquid crystal layer and has a second polarizing characteristic; a color filter is disposed between the first polarizing plate and the second polarizing plate, For incident light that is a light component that transmits a specified wavelength, at the same time, it is visualized during low-order display to form a wavelength of more than one of the colored complementary colors that cause chroma and / or hue changes. 200409999 The light components are selectively scattered, reducing the contrast of light at this wavelength. When using the invention in the scope of patent application No. 1 of the present invention, not only the light component of the specified wavelength is transmitted, but also the color filter provided is displayed during low-order display, resulting in chroma. And / or light components with wavelengths of one or more of the colored complementary colors due to hue change are selectively scattered. Therefore, the colored complementary colors caused by the change in display characteristics during low-tone display are based on a certain value. The output of the ratio can suppress the variation in display characteristics by outputting the complementary color. In addition, the image display device according to item 2 of the scope of patent application is that in the above invention, the first polarizing plate and the second polarizing plate are arranged so that polarizing planes are orthogonal to each other, and the color filter is The device reduces the contrast of light having a wavelength of more than one yellow. In addition, the image display device according to the third aspect of the patent application is the above-mentioned invention, wherein the first polarizing plate and the second polarizing plate are arranged so that polarizing planes are parallel to each other, and the color filter This is to reduce the contrast of light having a wavelength of one or more cyans. In addition, the image display device related to the fourth item of the patent application is, among the above-mentioned inventions, which is formed due to the change in the chroma and / or hue during the display of low-order tones. The colored complementary color is formed by mixing light of a first wavelength and light of a second wavelength different from the first wavelength. The color filter includes at least transmitting and scattering light of the first wavelength. Colored particles, and colored particles that transmit and scatter light of the aforementioned second wavelength. In addition, the image display device related to the fifth item of the patent application is -1 1- 200409999. In the above invention, the color filter further includes colored particles, so that the color filter has been adapted to display in a low-order tone. In the case of the scattered light of the third wavelength of the aforementioned colored complementary color formed due to the change of the apparent chroma and / or hue, the contrast of the third wavelength of light is different from that of the first wavelength. The ratio between the wavelength and the contrast ratio of light of the second wavelength is formed as 1 to 0. 4 5. In addition, the image display device related to the sixth aspect of the patent application is an image display device including an array substrate and a counter substrate, and a liquid crystal layer enclosed between the array substrate and the counter substrate. Performing image display based on the electro-optical effect of the liquid crystal layer, comprising: a color filter that selectively transmits at least light of a first wavelength and light of a second wavelength different from the light of the first wavelength; The first polarizing plate is disposed on the array substrate side for the liquid crystal layer and has a first polarization characteristic; the second polarizing plate is disposed on the opposite substrate side for the liquid crystal layer and has a second polarization characteristic; The random device is a light component having a wavelength of one or more of the wavelengths of the incident light, which is visualized in a low-order display and has a complementary color that is colored, and is disposed between the first polarizing plate and the second polarizing plate. Selectively scatters, reducing the contrast of light at this wavelength. In addition, the image display device according to item 7 of the scope of patent application is that in the above invention, the first polarizing plate and the second polarizing plate are arranged so that polarizing planes are orthogonal to each other, and the selective diffuser is The chaotic device reduces the contrast of light having a wavelength of more than one yellow. In addition, the image display device according to item 8 of the scope of patent application is that in the above invention, wherein the first polarizing plate and the second polarizing plate-12-200409999 are arranged so that the polarizing planes are parallel to each other, The aforementioned selective scatter device reduces the contrast of light having a wavelength of one or more cyans. In addition, the image display device related to item 9 of the scope of patent application is among the above-mentioned inventions, in which, in the low-key tone display, the aforementioned complementary color with color is displayed during the low-key display, which is performed by mixing the first Formed by light of a wavelength and light of a second wavelength different from the first wavelength, the selective scattering device includes at least colored particles that scatter the light of the first wavelength and disperse light of the second wavelength Chaotic colored particles. In addition, the image display device related to the patent application No. 10 is that, among the above inventions, the aforementioned selective scatter device contains colored particles, and in the low-level display, the scatter is directly formed and displayed. Monochromatic light with a complementary color. In addition, the image display device according to item 11 of the scope of patent application is that in the above invention, the colored particles are determined by adjusting the particle size and refractive index of at least one of the particles to light of the target wavelength. Scatter proportion. In addition, the image display device according to item 12 of the scope of patent application is, among the above-mentioned inventions, wherein the selective scattering device is formed by including an adhesive material, and is arranged on the counter substrate and the first substrate. Between the two polarizing plates, the opposite substrate and the second polarizing plate are fixed. In addition, the image display device relating to item 13 of the patent application scope is, among the above-mentioned inventions, wherein the selective scattering device is formed by including an adhesive material, and is disposed between the array substrate and the first The array substrate and the first polarizing plate are fixed between the polarizing plates. -13- 200409999 In addition, the image display device relating to item 14 of the scope of patent application is, among the above inventions, wherein the aforementioned selective scattering device is arranged on the inner surface of the opposite substrate or the array substrate. And the interface with the liquid crystal layer is planarized. In addition, the image display device according to item 15 of the scope of patent application is that, in the above invention, the array substrate is provided with a pixel electrode arranged to correspond to a display element, and controlling the supply to the pixel An electrode potential switching element, a scanning line that controls a driving state of the switching element, and a signal line that supplies a potential to the pixel electrode via the switching element. In addition, the image display device according to item 16 of the scope of patent application is that in the above invention, the array substrate further has a common electrode arranged to correspond to the pixel electrode, and the liquid crystal layer is based on the foregoing. The potential difference between the pixel electrode and the common electrode generates an electric field in a direction parallel to the surface of the array substrate. In addition, the image display device according to item 17 of the scope of patent application is that in the above invention, it further includes a backlight light source that supplies light transmitted through the liquid crystal layer. [Embodiment] Hereinafter, an image display device according to an embodiment of the present invention will be described with reference to the drawings. In addition, please note that the drawings are for illustration only and are different from the actual products. Moreover, the drawings are mutually different, and of course, they also include parts with different sizes or ratios. In addition, in the following embodiments, the image display device has an IPS-type structure. Although -14-200409999 is equipped with two polarizing plates with polarizing surfaces orthogonal to each other, and also has orthogonal polarization The structure of the cross-nicol is described as an example, but, as described later, it should be noted that the image display device is not limited to this structure. [Embodiment 1] First, an image display device according to Embodiment 1 of the present invention will be described. The image display device according to this embodiment 1 has a structure provided with a color filter between two polarizing plates each having a specified polarization characteristic, and has a transmission which corresponds to R, G, and Filter section for B-wavelength light. The filter unit has been formed by containing specific colored particles. When transmitting light of the corresponding wavelength, it also has the structure caused by the polarizing plate. It is displayed during low-order display, and the color is formed. The function of reducing the contrast of light of the complementary wavelength and light. When the contrast is lowered and displayed at a low level, it can also be formed by a certain proportion so that the light forming the complementary color is released to the outside, and the color at the time of the low level display caused by the conventional problem is suppressed. Degree, hue change, and can obtain high-quality image display. Fig. 1 is a schematic diagram showing the structure of the image display device of the first embodiment. As shown in FIG. 1, the image display device according to the first embodiment has a structure in which an array substrate 1 having a specified circuit element is disposed, and an opposite substrate 2 that is oppositely disposed to the array substrate 1. The structure between the array substrate 1 and the counter substrate 2 is a liquid crystal layer 3 containing liquid crystal molecules having a specified alignment. In addition, among the array substrate 1 and the counter substrate 2, on the outer surfaces of the inner surface which is in contact with the liquid crystal layer 3 and facing the 200409999, polarizing plates 5, 6 whose polarizing surfaces are orthogonal to each other are arranged. . In addition, a color filter 4 is disposed between the counter substrate 2 and the liquid crystal layer 3, and has a function of transmitting and scattering light components of a predetermined wavelength. The array substrate 1 and the counter substrate 2 are formed by a transparent substrate, and have a structure in which a specified circuit element is arranged as required. FIG. 2 is an equivalent circuit diagram showing a wiring structure arranged on the surface of the array substrate 1. As shown in FIG. As shown in Fig. 2, the array substrate 1 is structured like pixel electrodes 9a to 9c so that the pixel electrodes are arranged in a matrix shape, and each of its surroundings has a structure in which designated circuit elements are arranged. In addition, in the following, each pixel electrode and its peripheral circuit elements are collectively referred to as sub-pixels, and three sub-pixels corresponding to R, G, and B are collectively referred to as display pixels. In addition, the structure and wiring pattern of each pixel electrode and peripheral circuit elements arranged on the array substrate are the same in each sub-pixel. Therefore, the following are collectively referred to as "pixel electrode 9" and "common electrode 1" 〇 ". In addition, regarding the thin-film transistor 11 with sub-pixels, the lack of the need to distinguish the source electrode from the drain electrode, so the two electrodes are collectively referred to as the source / drain electrode in addition to the gate electrode. electrode. In the vicinity of the pixel electrode 9, a common electrode 10 that opposes the pixel electrode 9 and generates an electric field, and a thin-film transistor 11 that functions as a switching element for the pixel electrode 9 and a common electrode 1 0 are arranged. A slightly constant potential is supplied by a potential supply circuit (not shown). In addition, one of the source / drain electrodes of the thin film transistor 11 is connected to the pixel electrode 9, and the other source / drain electrode is located near the pixel electrode 9, -16-200409999 and connected to the longitudinal extension. The signal line 1 2. Furthermore, the gate electrode of the thin film transistor 11 is located near the pixel electrode 9 and is connected to the scanning line 13 extending in the lateral direction. The signal line 12 and the scanning line 13 are connected to designated driving circuits (not shown), and have a structure in which a potential corresponding to a displayed image is supplied by the driving circuit. The scanning line 1 3 is also connected to the gate electrode of the thin-film transistor 1 1 constituting the sub-pixel. Therefore, the scanning line 13 changes the gate potential to control the function of the thin-film transistor as a switching element. The driving state of the crystal 11. Specifically, the thin film transistor 11 is turned on by applying a predetermined potential to the scanning line 13, and the signal line 12 through the thin film transistor 11 is for the pixel electrode 9 according to the tone of the display color. Supply the specified potential. Since the common electrode 10 maintains a slightly constant potential, an electric field corresponding to the potential difference is generated between the pixel electrode 9 and the common electrode 10. By this electric field, the alignment of the liquid crystal molecules contained in the liquid crystal layer 3 on the array substrate 1 is controlled. Since the backlight module 7 shown in FIG. 1 is incident on the liquid crystal layer 3 through the polarizing plate 6 The light is based on the alignment state of the liquid crystal molecules controlled by the electric field, so that the polarizing surface is rotated by a specified angle and output to the polarizing plate 5. In addition, light having wavelengths corresponding to R, G, and B, respectively, is transmitted through each of the areas corresponding to the sub-pixels by the color filters, and then enters the polarizing plate 5. The polarizing plate 5 has a designated polarizing surface. Among the light output from the liquid crystal layer 3, only the polarizing component consistent with the polarizing surface of the polarizing plate 5 is transmitted. Therefore, the intensity of the light transmitted through the polarizing plate 5 depends on the The rotation angle in the liquid crystal layer 3. Therefore, by controlling the potential applied to the pixel electrode 9, the intensity of light -17-200409999 output to the outside can be controlled, and pixel display is performed. Next, the color filter 4 will be described. The color filter 4 is to transmit the light corresponding to the wavelengths of R, G, and B in each of the areas corresponding to the sub-pixels, and at the same time, it has the function of scattering light with a certain proportion. FIG. 3 is a schematic diagram showing the structure of the color filter 4. As shown in FIG. 3, the color filter 4 has filter sections 4r, 4g, and 4b corresponding to R, G, and B in each region corresponding to the sub-pixels, and these filter sections 4r, 4g The opposite of 4b has a structure corresponding to the display pixels and arranged in a matrix. In addition, the filter sections 4r, 4g, and 4b are formed using transparent resin or the like as a base material so as to include colored particles 14r, 14g, and 14b, respectively. The colored particles 14r, 14g, and 14b have a function of transmitting light having wavelengths corresponding to R, G, and B, respectively, and a function of dispersing the light at a specified ratio in accordance with the particle diameter. Here, in this embodiment 1, the particle size of the colored particles 14r and 14g is set to be larger than the particle size of the colored particles 1 4b, and the color filter 4 is formed in a contrast ratio of R: G: B = 0. 45: 0. 45: 1 is better. Here, the so-called contrast means the ratio of the contrast chirp in light of a specified wavelength, and the contrast chime means that for the incident light having a single polarizing plane, the output of each filter unit is not scattered. The ratio of the intensity of light on a polarizing plane. In general, as the particle size of the colored particles increases, the proportion of scattered light will increase, resulting in a decrease in contrast ratio. Therefore, by adjusting the particle size of the colored particles 1 ΑΜΕ, 1 4b, the contrast ratio 値 of the filter portions 4r, 4g, 4b is controlled, and the desired contrast can be achieved. Next, the effect of the wave filter 4 in the low-order display and the high-order display-] 8- 200409999 will be described with reference to Figs. 4 and 5. Fig. 4 is a schematic diagram showing an example of a low-order display. It is used to explain the state of components that transmit light having wavelengths corresponding to R, G, and B when displaying in black. In the following description, for the sake of easy understanding, only black and white examples will be described. However, it is of course true that it is generally colored. In addition, the polarized state Ab to the polarized state Eb shown in FIG. 4 indicate the wavelength corresponding to B. Similarly, the polarized state to the polarized state & indicates the wavelength corresponding to R, the polarized state Ag to the polarized state. Eg means a wavelength corresponding to G. First, the white light output by the backlight module 7 is a mixture of light with various polarizing surfaces. On the whole, the light from the polarized state Ab to the polarized state Ag that has no polarized state is incident on the polarizing plate 6. The polarizing plate 6 has a polarizing surface in a direction indicated by a dashed line (hereinafter, referred to as "lateral"), and transmits only a light component having a polarizing surface consistent with the polarizing surface of the polarizing plate 6. Therefore, as shown in FIG. 4, the light in the polarized state Bb to the polarized state Bg only on the lateral polarized surface is emitted from the polarizing plate 6 and incident on the liquid crystal layer 3. In other words, in the case of an image display device that performs the Normally Black mode, the potential is not applied to the pixel electrode during the black display. Therefore, the liquid crystal molecules included in the liquid crystal layer 3 remain aligned in the same direction. Of the state. Therefore, when the light beam incident on the liquid crystal layer 3 passes through the liquid crystal layer 3, it is not particularly affected by the liquid crystal molecules and still maintains the same polarization plane, and the emission has a polarization state Bb to polarized light. The light from the polarization state C b to the polarization state C g having the same state B g is incident on the color filter 4 from −19 to 200409999. The light having entered the color filter 4 undergoes effects different from light corresponding to a wavelength corresponding to B and light different from a wavelength corresponding to R and G. Specifically, the light system that has already corresponded to the wavelength of B is transmitted through the filter section 4b while maintaining its state, while the light system that has already corresponded to R and G is transmitted to the filter sections 4r and 4g at a certain level. The proportions are scattered. Therefore, the emitted light in the polarized state 1 ^ and the polarized state Dg2 is a light component that produces a polarized plane having a direction perpendicular to the polarized plane (hereinafter, referred to as "longitudinal direction") at the time of incidence. As described above, the colored particles 1 4b contained in the filter portion 4b are compared with the colored particles 1 4r contained in the filter portion 4r and the colored particles 14g contained in the filter portion 4g as follows: It is small, so the light corresponding to the wavelength of B is reduced by the colored particles 1 4 b to reduce the proportion of being scattered. Therefore, it is possible to disregard the generation of light components having a longitudinally polarized surface due to scattering, and to cause the light in the polarized state Db to be emitted. On the other hand, the light system corresponding to the wavelengths of R and G is that the colored particles 14r and 14g have a specified particle size. Therefore, the light components having a vertical polarization surface scattered in a certain ratio are made constant. The light is generated by the ratio and emits light in the polarized state Db to the polarized state Dg. In addition, the light systems in the polarization state Db to Dg are incident on the polarizing plate 5 respectively. The polarizing plate 5 is such that most of the light in the polarized state and the polarized state Dg is a horizontally polarized surface, except for the vertical polarized surface. Therefore, most of the light is not transmitted, but only passes through the color filter 4 The light component of the longitudinally polarized surface due to scattering. In addition, the light of the polarized state D b is originally, because it has almost no -20-200409999 light component of the longitudinal polarizing surface, it theoretically does not pass through the polarizing plate 5, but as a problem of the conventional technology It is explained that due to the structural reasons of the polarizing plate 5, only a certain amount is actually transmitted. Therefore, the light corresponding to the wavelengths of R and G is emitted in order to emit the light in a polarized state E〆 with a specified intensity and the light in the polarized state Eg, and the light corresponding to the wavelength of B is used to cause a light in a polarized state Eb with a specified intensity. Light comes out. As described above, in the image display device according to the first embodiment, even in the case of black display, there is a structure that transmits only light having wavelengths corresponding to R and G, and the intensity of the light is borrowed. It is determined by the amount of light components having a longitudinally polarized surface due to scattering when the color filter 4 transmits. The proportion of occurrence of scatter varies according to the particle diameters of the colored particles 14r and 14g contained in the filter portions 4r and 4g for R and G, respectively. Therefore, the colored particles 14r, 14g, and 14g The particle size of the colored particles 14b is optimized, and the intensity of light corresponding to the wavelengths of R, G, and B can be made slightly equal, and the change in chromaticity during black display can be suppressed. Secondly, as an example of high-order display, in order to explain the effect of the color filter 4 when performing white display, refer to FIG. 5 to explain that high-level g display may not be displayed from time to time so as not to reduce the image quality. In addition, the polarized state Ab ′ to the polarized state Eb ′ shown in FIG. 4 are those indicating the polarized state of light corresponding to the wavelength of B, the polarized state A / to the polarized state E /, and the polarized state Ag 'to the polarized state. Eg 'indicates those corresponding to the polarization states of light having wavelengths of R and g, respectively. First, the white light output from the backlight module 7 is formed into an unpolarized state including each of 200409999 polarized components, and the light systems of each polarized state Ab 'to polarized state Ag' are incident on the polarizing plate 6. The polarizing plate 6 has a polarizing surface in the lateral direction, and the incident light is light that passes through the polarizing component in the lateral direction, emits light in a polarized state Bb 'to a polarized state Bg', and enters the liquid crystal layer 3. When a white display is performed, a specified potential is supplied to the pixel electrode, and the influence of the electric field generated by this is applied. The alignment system of the liquid crystal molecules included in the liquid crystal layer 3 is controlled to direct the lower portion of the liquid crystal layer 3 and the liquid crystal. The upper part of layer 3 is rotated at 90 °. Therefore, the light having a polarization state Bb ′ to a polarization state Bg ′ having a polarization component in the lateral direction is a light having a polarization state C b ′ to a polarization state Cg ′ having a vertical polarization plane according to the polarization plane rotating in the liquid crystal layer 3 and rotating It is emitted from the liquid crystal layer 3 and is incident on the color filter 4. The color filter 4 is configured such that the diameter of the colored particles 14r and 14g contained in the filter portion 4r and 4g is large, and the colored particles 1 4b contained in the filter portion 4b are large. The particle size becomes smaller. Therefore, the light corresponding to the wavelengths of R and G is scattered by the filter portions 4r and 4g, and a light component having a laterally polarized surface is generated at a certain ratio. On the other hand, the light system corresponding to the B wavelength is such that the proportion of scattering in the filter portion 4b is low, and almost no light component having a laterally polarized surface is generated. Therefore, by passing through the color filter 4, light having a polarized state D /, a polarized state Dg5 having a horizontally polarized component, and a polarized state Db 'having only a longitudinal polarizing plane is emitted at a certain ratio, and is incident on To the polarizing plate 5. The polarizing plate 5 has a longitudinal polarizing surface. Therefore, in order to shield a light component having a horizontal polarizing surface of -22 to 200409999, only the light component having a longitudinal polarizing surface is passed. Therefore, with respect to the polarization state D b ', almost all of the light passes, and the light in the polarization state D / and the polarization state Dg' is shielded by the light components scattered by the filter portions 4r and 4g, and only passes through the light having a longitudinal polarization surface. The light component emits light in each of the polarization states E b ′ to Eg ′ to the outside. When performing white display, in order to partially shield the light corresponding to the wavelengths of R and G, the intensity of some light lower than the wavelength corresponding to the leaked B is formed. However, in the low-order display, the light corresponding to the wavelength of B is reduced, for example, in the case of the graph in Figure 1 B, the light corresponding to the wavelength of B does not exceed the incident light to the polarizing plate 6 Light of 0. 15% degree. Therefore, even for light having wavelengths corresponding to R and G, which is required to obtain the balance of chroma and hue, the light has sufficiently equal intensity. Therefore, the ratio of the light components scattered by the color filter 4 is based on It is about 0.15% of the whole. Therefore, the ratio of the light components shielded by the polarizing plate 5 when performing a white display is also formed to a degree of 0. 15%, 99. 85% of the light is transmitted through the polarizing plate 5. When the light emission corresponding to the wavelength of B is 100% transmission, R: G: B and 1: 1: 1 are formed. Judging from a practical point of view does not cause a problem. Next, the image display device according to the first embodiment is shown in which the light transmitted during the actual low-order display does not have wavelength dependency. The inventors of this case used to make the contrast R: G: B = 0. 45: 0. In the state of 45: 1, the image display device is a color filter 4 having a particle size smaller than that of the conventionally colored colored particles 2 5 b, and the wavelength dependence of the transmitted light during black display is counted by several millimeters. Find it out. Figure 6 is a graph showing the result of the calculation of the number. In Figure 6, 'Solid line is shown> 23-200409999 Calculation result' is shown as a dashed line for comparison. The wavelength dependence of the transmitted light of the image display device. It is obvious from FIG. 6 that in the image display device according to the first embodiment, in the wavelength band corresponding to the wavelength band near the 40nm band of B, the transmittance is reduced to the same degree as other wavelengths. It can also display high-quality image display without changing the chroma when displaying low-level tones. In addition, the inventors of this case performed mathematical calculations on changes in display characteristics based on the change in the tone of the display color, so that the image display device according to the first embodiment can display chroma and hue as a more conventional image display The device has a more stable image display. Specifically, the calculation is performed for the change of the color temperature, the change of the chromaticity coordinate, and the moving distance on the chromaticity coordinate plane for the tone change, and the calculation result with the number of the conventional image display device. Compare. In addition, in the calculation of the number, for comparison of each filter unit in the image display device of the first embodiment is set as a rule: G: B = 0. 4 5: 0 · 4 5: 1 On the other hand, a conventional image display device that performs numerical calculations as a comparison object is an image display device that uses a color filter based on the EBU (European Broadcasting Union) standard. The comparison in the color filter is R: G: B = 2 · 4: 2. 4: 1 performs mathematical calculations. Fig. 7 is a graph showing changes in color temperature in response to tone changes. The vertical axis in Fig. 7 indicates the amount of change in color temperature, and the horizontal axis indicates the level of the tone. In addition, the so-called color temperature refers to the color composition expressed by temperature based on the relationship between the color of light emitted by an ideal black body and the temperature -24, 200409999 according to Planck's radiation law. Among them, as the color temperature rises, the color composition has the moving property from the red system to the cyan system. Therefore, the amount of change in color temperature is easy to know the degree of change in the hue of the displayed color, and the amount of change in color temperature is across the full tone and is kept low. The image display device is evaluated to have superior characteristics that can suppress the change in hue . In addition, the gradation of the horizontal axis is a level for displaying brightness by being divided into 250 stages, and the maximum brightness is formed at the 250 stage. In FIG. 7, the curve 1 i is a curve showing the result obtained by calculating the change in the change amount ΔK of the color temperature in a conventional image display device as a comparison target. In addition, the curve 12 is a curve showing the result obtained by calculating in terms of a change in color temperature in the image display device according to the first embodiment. In addition, curve 13 is a curve showing a result of actual measurement of color temperature for a conventional image display device as a comparison target. Among them, it is obvious that the result of the calculation of the factor 値 is compared with the curve 1 i. It is slightly the same as the actual measurement volume. Therefore, the actual measurement volume obtained when the image display device according to the first embodiment is actually manufactured can be presumed to form the same curve as the curve. After comparing the curve h with the curve 13, in a state where any tone is above the 100 level, the color temperature change amount Δκ is maintained at approximately 0, and it is shown that there is almost no change in the color temperature. However, when the tonality is below the 100 level, differences begin to occur in the curves, and as the tone decreases, the amount of color temperature change in curve 1 rises rapidly. On the other hand, the curve ι3 is about 値 irrespective of the tone, and even at a level of -25-200409999, the change in color temperature is almost 値. Therefore, the image display device according to this embodiment 1 can maintain a certain color temperature without any change in tone. Among them, the hue is hardly changed during low-tone display, and the display can be performed with high quality. The advantages of video display. Generally, in terms of the amount of change in color temperature, the tone is preferably at a level above 3 2 and below 2000K, and more preferably, it is more than 200K across the full tone. The image display device according to the first embodiment not only satisfies these conditions by optimizing the contrast, but also exhibits better and superior characteristics regarding the amount of change in color temperature. Next, referring to Fig. 8, the change in the chromaticity coordinates for the change in tone will be described. The so-called chromaticity coordinates are those in which the hue and chromaticity obtained by numerically displaying the hue and chromaticity are set to the X and y coordinates, respectively. Among them, the change in the chromaticity coordinates means that the display is Changes in the ratio of R, G, and B in color. Therefore, the smaller the change in chromaticity coordinates caused by the change in tone, the less the change in hue and chroma of the display color, and a high-quality image display can be obtained. In FIG. 8, a curve 14 is a curve for calculating the change in the excellentness coordinates by numerical calculations for a conventional image display device as a comparison target, and a curve 15 is a curve for the image display device according to the first embodiment. Calculate the curve to find the change in the coordinates of the brightness. In addition, a curve 16 is a curve showing a result of actually measuring a chromaticity coordinate corresponding to a change in tone in a conventional image display device as a comparison target. If it is obvious after comparing the curve 14 and the curve 16 respectively, even if the result of the numerical calculation and the actual measurement have some deviations, they show a slightly same tendency. Therefore, the actual measurement of the change in the chromaticity coordinates of the image display device of this embodiment 1- 26-200409999 shows that the tendency tends to be slightly the same as that of the curve 15. Comparing curve 14 and curve 16 respectively, it is obvious that the conventional image display device is that the chromaticity coordinate changes across a wide range, and the X 値 system changes from about 0 · 2 2 5 to about 0 · 3 , Y 値 changed from about 0.23 to about 0.31. On the other hand, in the image display device according to the first embodiment, the chromaticity coordinate system is hardly changed, while X 値 and y 维持 remain slightly constant. Therefore, it is obvious that in the image display device related to the first embodiment, in order to minimize the change of the chromaticity coordinates with respect to the gradation change, the gradation is maintained to maintain a stable hue and chroma of the display color. Next, the moving distance of the chromaticity coordinates will be described with reference to FIG. 9. In the graph of Fig. 9, the vertical axis is the amount of change in the chromaticity coordinate movement on the coordinate plane, that is, the result of calculating (X2 + y2) 1/2 for X /, y 値, horizontal The axis indicates the level of the tone. In addition, for comparison, the coordinate in the state where the tone is adjusted to the 250 level is used as a reference in each curve to derive the moving distance. In FIG. 9, a curve 17 is a graph showing a calculation result of a conventional image display device as a comparison target, and a curve 18 is a graph showing an image display device according to the first embodiment. The number is the curve of the calculated result. The curve 19 is a curve showing the amount of change in the chromaticity coordinates derived from the actual measurement in a conventional image display device. If it is obvious after comparing curve 17 and curve 19 respectively, in the high-tone display, there is a slight deviation, and in the low-tone display, especially the tone is below 50 level, the number is calculated as -27- 200409999 The result is in good agreement with the actual measurement. Therefore, it is also presumed that, with respect to the actual measurement of the image display device of the first embodiment, particularly in the low-order display, a value slightly similar to that of the curve 18 can be obtained. If it is obvious after comparing curve 17 and curve 19 respectively, when the tone is above 100 levels, the distance of the chromaticity coordinates in each image display device is relatively low, which can be suppressed to a practical level. The extent of the problem. On the other hand, it is clear from curve 17 that in the conventional image display device, when the tone is formed below the 100 level, the amount of change in the chromaticity coordinates is gradually increased, and the tone is at the 0 level. On the other hand, the moving distance is approximately 0 · 09. On the other hand, in the image display device according to the first embodiment, as shown by curve 18, even if the tone is below the 1000 level, the moving distance of the chromaticity coordinates is suppressed to a relatively low level. In the full-scale tone, it is formed to a value of 0. This is to mean that the image display device related to the first embodiment is a change of irrelevant tone, and the display color is maintained at a slightly same chroma, and the image of superior quality can be displayed even in low-tone display. display. Above, from the calculation results of the numbers shown in FIGS. 6 to 9, it is obvious that the image display device according to the first embodiment is directed to changes in color temperature, change in chromaticity coordinate, As for the variation distance, it is extremely low compared with the conventional image display device. The change in the color temperature and chromaticity coordinates is an index indicating the degree of change in the chroma of the color. Therefore, as a result of calculation by the data, the image display device according to the first embodiment displays the color for the change in tone. The degree of change is low. Therefore, the image display device according to the first embodiment does not change the chroma of the display color by the tone adjustment -28- 200409999, and can prevent the cyan color display even in the low-tone display. In addition, in the calculation of the numbers shown in Figs. 6 to 9, although the contrast in the color filter is set to r: G: B20. 4 5: 0. 4 5: 1, but it is not limited to this 値. Specifically, for example, in the first embodiment, the contrast ratio between R and G is that if it is lower than B, it can be more suppressed in the low-tone display than the color display is conventionally known. Being. In addition, it is preferable that when the contrast ratio B of B is set to 1, by forming a selective scatter layer to make the contrast ratio R and G of both sides less than 0.6, it is possible to more effectively suppress the manifestation of color. . In addition, the image display device according to the first embodiment is to control the particle diameters of the colored particles 1 4 r, 1 4 g, and 1 4 b constituting the color filter and the wave filter 4, and to suppress them during low-order display. Significant changes in chroma and hue. The material for forming the colored particles 14r, 14g, and 14b is a material that can be used as a material for a conventional color filter, and it is not necessary to select a special material. In addition, the manufacturing procedure of the color filter after adjusting the particle size of the colored particles can be the same as the conventional one. Therefore, in the manufacturing of the image display device according to the first embodiment, it is equivalent to the conventional one. Manufacturing cost. [Embodiment 2] Next, an image display device according to Embodiment 2 will be described. The image display device according to the second embodiment is used to suppress the change of hue and chroma that are manifested during low-tone display, and has a selective scatter layer separated from the color filter. The compensation is caused by The structure of the image display device changes the hue and chroma produced by -29-200409999 to scatter light with more than one wavelength. Fig. 10 is a schematic diagram showing the overall structure of the image display device of the second embodiment. As shown in FIG. 10, the image display device according to the second embodiment is provided with an array substrate 1 having a specified circuit element 1, an opposite substrate 2 disposed opposite to the array substrate 1, and sealed in the array substrate 1. And a liquid crystal layer 3 between the opposing substrates 2, a polarizing plate 5 disposed on the outer surface of the opposing substrate 2, and a polarizing plate 6 disposed on the outer surface of the array substrate 1. Further, between the liquid crystal layer 3 and the counter substrate 2, a color filter 15 and a selective scattering layer 16 are arranged. In the second embodiment, the color filter 15 is used to transmit light having wavelengths corresponding to R, G, and B, respectively, instead of adjusting the scattering degree of light of a specific wavelength as in the first embodiment. . In addition, in the second embodiment of the present invention, in order to give the same names and symbols to the same parts as the image display device of the first embodiment, all functions and implementations of the parts not specifically mentioned are given. The situation is the same in Example 1. 11A to 11C are schematic diagrams showing the structure of a selective scattering layer 16 constituting the image display device of Embodiment 2 of the present invention. The random layer 16 is selected in order to suppress the change in hue and chroma of the enhancement color during low-tone display, and is used to select light with a wavelength of one or more complementary colors corresponding to the enhancement color. Ground scattered. Hereinafter, the structures shown in FIGS. 1A to 11C will be described in order. The structure shown in FIG. 1A is' the colored particles 14r, Mg, and 14b constituting the color filter 4 in Example 1 are uniformly dispersed to -30-200409999, each of which is made of a transparent resin. Material. In the particle diameters of the colored particles 14m, 14g, 14b, and the selective scattering layer 16, the contrast of the light corresponding to the wavelengths of R, G, and B is the same as that of Example 1. 'Here Explanation is omitted. The image display device according to the second embodiment of the present invention is different from the color filter 15 in that it is configured to have a choice of suppressing the change in chroma and hue when displaying in a low-order tone. Scattered layers 1 6. The scatter layer 16 is selected to have a structure having colored particles 14r, 14g, and Ub. According to the same principle as in Example 1, it has the ability to suppress the change of chroma and hue when it is displayed at a low level. Functionally, the image display device according to the second embodiment is capable of displaying high-quality color images by being provided with the selective scatter layer 16. Next, the structure shown in FIG. 11B will be described. In the structure shown in Fig. 11B, the selective scattering layer 16 has only a structure including colored particles 14r and 14g and does not include colored particles 14b. In the case where polarizing plates 5 and 6 are arranged so that the polarizing surfaces are orthogonal to each other, the overall display of the display color system becomes cyan during low-tone display. However, in order to compensate for changes in chroma and hue, It is configured to emit light having a wavelength corresponding to yellow as a complementary color of cyan during low-tone display. In addition, in order to display the yellow color as a complementary color, it is sufficient if the light corresponding to the wavelengths of R and G can be scattered only by a slight amount. In the second embodiment, the selective scatter layer 16 is not required to function as a color filter, and is different from the case where the selective scatter function is provided in the color filter as in the first embodiment, but can be regarded as not included. There is a structure of colored particles 14b. 200409999 Next, the structure shown in Fig. 11C will be described. In the structure shown in Fig. 1c, the scattered layer 16 is selected as shown in Fig. 1A and Fig. 1B. It does not contain colored particles corresponding to light with different wavelengths, but It has a structure containing only colored particles 17 corresponding to monochromatic light. Here, the so-called monochromatic light is a kind of light that has a wavelength component that spans a specified range and also contains monochromatic light equivalent to chromatics, and is not only light formed with a single wavelength. As described above, when the chromaticity and hue of the display color are changed during low-tone display, and the cyan color is displayed, light corresponding to a wavelength of yellow as a complementary color can also be emitted. Therefore, it is not necessary to constitute A structure that scatters light of many wavelengths and emits light of a single wavelength corresponding to yellow. In the second embodiment, since it is a structure in which a color filter 15 is additionally provided, the selective scattering layer 16 does not need to have light for wavelength display corresponding to R, G, and B for color display. Function through. Therefore, the colored particles 17 that can directly scatter light of a single wavelength corresponding to the complementary color can be included, and the selective scattering layer 16 can be formed by containing only a single kind of colored particles in the base material. Next, with reference to Figs. 12A and 12B, examples of locations where the scattered layer i 6 is selected as illustrated in Figs. 1A to 11C will be described. In the example in FIG. 11A, the selective scattering layer 16 is formed by further including an adhesive material, and also has a function as an adhesive material for adhering the opposing substrate 2 and the polarizing plate 5. In this embodiment 2. As shown in Figs. 1 A to i 1 C, the scattered layer 16 has a structure in which colored particles are scattered into a uniform shape. Therefore, as in the case where the selective scattering function is held in the color filter, there is no need to control the dispersion area of the colored particles, and -32- 200409999 also has the function of using the selective scattering layer 16 as a subsequent layer. In addition, by including an adhesive material in the selective scattering layer 16, the selective scattering layer 16 can also have a function of fixing the polarizing plate 6 and the array substrate 1. Furthermore, an adhesive material is used as a medium for dispersing colored particles, and a structure in which a base material such as a transparent resin is omitted is also possible. In the example in FIG. 11B, the selective scattering layer 6 is arranged at the interface between the array substrate 1 and the liquid crystal layer 3, and the interface is flattened for the selective scattering layer 16 once it is held. Function. As shown in FIG. 2, a predetermined circuit structure is formed on the array substrate 1, and the flatness of the interface between the array substrate 1 and the liquid crystal layer 3 will cause chaos and unevenness due to the circuit structure. On the other hand, judging from the viewpoint of high-quality image display, the thickness variation of the liquid crystal layer 3 due to the unevenness and unevenness of the interface is not good. Generally, the surface of the array substrate 1 has A structure in which a planarization layer is arranged. By including predetermined colored particles in the flattening layer, a selective scatter layer 16 having a function as a selective scatter layer and a function as a flattening layer can be realized. The interface between the counter substrate 2 and the liquid crystal layer 3 is also preferably flat. Therefore, it can also be used as a structure in which a selective scattering layer 16 having a flattening function is arranged on the interface. In the image display device according to the second embodiment, the selective scattering layer 16 has a structure in which the designated coloring material is uniformly dispersed in the base material. Therefore, in addition to being easily manufactured, as shown in FIG. 12A As shown in FIG. 12B, by properly selecting the dispersed base material, it is possible to have functions other than the random selection. With proper selection of the base material, except for the presence or absence of dispersion of colored particles, the structure of the image display device is similar to that of a known person -33- 200409999, even if it does not accompany design changes and manufacturing process changes. Image display device capable of displaying high-quality color images even in low-tone display. The contents of the present invention have been described above in connection with the first embodiment and the second embodiment. However, the present invention is not limited to the contents described above, and various embodiments and modifications may be conceived by those involved in the industry. For example, with regard to the configuration of the polarizing plates 5, 6, it is also possible to provide a structure in which the polarizing planes of each other are formed in parallel, that is, arranged in parallel-nicol. As described in the foregoing description, when the mutually polarizing planes are parallel, in the low-order display, the chromaticity and hue of the display color are changed by emitting light having a wavelength corresponding to yellow. Therefore, by selecting the scatter layer to cancel the chroma and hue caused by the light, it is possible to effectively suppress changes in chroma and hue during low-tone display. Specifically, in the case of the structure of the parallel polarizer, for example, when the color corresponding to cyan (which is used as a low-order display, it is formed as a colored yellow color that causes the change in chroma and hue to be displayed). The color of the light is scattered at a certain ratio, thereby realizing high-quality image display. That is, for example, in the configuration of Embodiment 1, the particle diameter of the colored particles 14b that scatters the light corresponding to the wavelength of B is increased, and it will effectively correspond to B in the low-order display. A structure in which light of a wavelength is emitted at a certain ratio. In addition, the invention can be applied to any color other than cyan and yellow even if it is caused by changes in chroma and hue that are displayed during low-key display. Zhicai-34- 200409999 degrees, the wavelength of the colored part of the light due to hue changes, the wavelength of light, using the color filter 4 or select the scatter layer 丨 6 to scatter, so that in order to suppress low-level display Changes in chroma and hue. In addition, in the color filter 4 and the selective scattering layer 16, the degree of scattering is adjusted by controlling the particle size of the colored particles. However, it is also possible to select the material of the colored particles and the basis of refraction appropriately. The difference in rate is used to adjust the structure of the degree of scatter. The degree of scattered light increases as the refractive index of the colored particles increases. The degree of scatter is also a structure that can be adjusted by changing both the particle size and the refractive index of the colored particles. In the first and second embodiments, the structure of the IPS type is described as an example. However, the present invention can exert advantageous effects even when other driving methods are used. For example, in the case of an image display device, a common electrode system is arranged on the counter substrate side, and for the liquid crystal layer, an electric field is applied in a direction perpendicular to the surface of the array substrate. In addition, although the thin film transistor is used as the switching element in the first and second embodiments, for example, a structure using a MIM (Metal Insulator Metal) driving device or the like may be used. Furthermore, a structure using a passive matrix method may be adopted instead of an active matrix method using a switching element. In low-order display, the conventional problem of displaying color is not limited to the IP S-type structure, but is generated by all image display devices equipped with most polarizing plates, and the scattered layer is selected by configuration. To solve these problems. In addition, a reflection method in which a backlight module is omitted, and external light such as sunlight is used as a light source, or a semi-transmission method may be used. -35- 200409999 [Effect of the invention] As described above, if the present invention does not only transmit the light component of the specified wavelength, the color filter provided is displayed during low-order display, resulting in Chromaticity and / or hue changes due to the color of the complementary color of one or more wavelengths of light components are selectively scattered, therefore, the low-key display caused by changes in display characteristics caused by the color of complementary color When the output is performed at a certain ratio, the effect of suppressing variations in display characteristics can be achieved by outputting the complementary color. [Brief description of the drawings] Fig. 1 is a schematic diagram showing the structure of the image display device of the first embodiment. Fig. 2 is an equivalent circuit diagram of a circuit structure arranged on an array substrate. Figure 3 is a schematic diagram showing the structure of a color filter. Fig. 4 is a schematic diagram for explaining the function of the color filter during low-order display. Fig. 5 is a schematic diagram for explaining the function of the color filter during high-order display. Fig. 6 is a graph comparing the image display device according to the first embodiment with the conventional image display device with respect to the wavelength dependence of light transmittance during low-order display. Fig. 7 is a graph comparing the image display device of Example 1 with the conventional image display device -36- 200409999 for changes in color temperature accompanying a change in tone. Fig. 8 is a graph comparing the image display device of the first embodiment with a conventional image display device for changes in chromaticity coordinates accompanying a change in tone. Fig. 9 is a graph comparing the image display device of the first embodiment with a conventional image display device with respect to the amount of displacement on the chromaticity coordinate plane accompanying the change in tone. Fig. 10 is a schematic diagram showing the structure of the image display device of the second embodiment. Figures 11A to 11E are pattern diagrams of selecting a scatter layer. Figures 12A and 12B are schematic diagrams showing the positions of the scattered layers selected. Fig. 13A is a schematic diagram of the structure of a conventional image display device. Fig. 13B is a wavelength dependence of a light transmittance in a conventional low-tone display in a conventional image display device. Sex chart. [Description of representative symbols of main parts] 1: Array substrate 2: Opposite substrate 3: Liquid crystal layer 4: Color filters 4r, 4g, 4b: Filter sections 5, 6: Polarizing plate 7: Backlight module-37- 200409999 9a: pixel electrode 9: pixel electrode 1 〇: common electrode 1 1: thin film transistor 1 2: signal line 1 3: scanning line 14i, 14g, 14b: colored particles
1 5 :彩色濾波器 1 6 :選擇散亂層 1 7 :著色粒子 1 0 1 :陣列基板 102 :對向基板 1 〇 3 :液晶層 104 :偏光板15: Color filter 16: Selecting a scatter layer 17: Colored particles 1 01: Array substrate 102: Opposite substrate 1 03: Liquid crystal layer 104: Polarizing plate
1 〇 5 :偏光板 1 〇 6 :背光模組 107 :彩色濾波器 -38-1 〇 5: Polarizing plate 1 〇 6: Backlight module 107: Color filter -38-