200807039 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種彩色濾光片與製造所用之光罩， 特別疋一種液晶顯示器用的彩色濾光片與製造所用之光 罩。 【先前技術】 液晶顯不器主要的運作原理是利用液晶分子具有受電 場影響而改變排列方向的特性，來控制光通過晝素區域之 強弱，以達到顯示不同亮暗訊號的目的。對於手錶和電子 叶异機等低階產品而言，僅有亮與暗狀態之液晶顯示器即 已經足夠。但若要顯示出灰階圖形和複雜的影像時，則必 須藉由改變每一晝素所施加電壓之大小，調整液晶分子轉 動的程度，以控制每一個晝素光穿透量之多少。至於要作 出能呈現多種鮮豔色彩的多媒體用之彩色液晶顯示器，則 還必須加上彩色瀘光片。在彩色濾光片上的紅綠藍三色的 彩色晝素，可將背光模組或外部的環境人射光過濾、成紅綠 藍三原色光，再藉由液晶顯示器中的液晶控制通過紅綠藍 彩色畫素的光量，混合出各式各樣千變萬化之色彩。 因此彩色濾光片是使液晶顯示器達到彩色化的一大功 臣。也是液晶顯示器最關鍵的零組件之一。彩色渡光片的 品質好壞對液晶顯示器的色彩顯示能力和顯示效果更是有 決定性的影響力。 其中一個決定彩色濾光片品質好壞的指標是彩色濾光 5 200807039 片表面的平坦度。由於在顯示器的架構中，彩色濾光片位 置相當接近液晶層。因此彩色濾光片表面的平坦度會影響 到液晶層的平坦度，影響到液晶層中液晶分子的配向排 列，使得液晶分子無法準確控制通過晝素區域的光量。因 而產生漏光的現象，同時也使得液晶顯示器的顯示效能降 低。另外，彩色濾、光片上彩色晝素表面的不平坦，也會對 顯示器的顯示效能產生影響。因為彩色晝素表面的不平 坦，會使部分光因為繞射或折射，而無法通過個別彩色畫 素。如此不僅會造成液晶顯示器亮度下降，也會影響到畫 素顏色的呈現，使得晝素顯示的顏色邊緣色彩和中心色彩 不一' 〇 【發明内容】 因此本發明的目的之-就是在提供一種彩色渡光片與 製造所用之光罩。此彩色濾光片的表面具有高平坦度，故 • $會影響到液晶層中液晶分子的配向排列。此外，此彩色 濾、光片上個別彩色晝素的表面亦相當平坦，故能忠實呈現 液晶顯示器所預定的色彩，而不會發生晝素顯示的顏色邊 緣色彩和中心色彩不一的問題。 根據本發明之上述目的，提出一種彩色渡光片。此彩 色遽光片包含透明基板、黑色矩陣和多個彩色晝素。黑色 ㈣位於透明基板上，以;t義出多個晝素開口。黑色矩陣 具有主體區域和多個邊緣區域’邊緣區域的厚度小於主體 區域的厚度。形色晝素位於畫素開口中，彩色晝素之邊緣 6 200807039 交疊於邊緣區域之上。 根據本發明之上述目的，提出一種光罩，此光罩用以 製造上述彩色濾光片之黑色矩陣。此光罩包含透明基板、 遮光層和多個開口。透明基板包含全遮光區域和多個特殊 遮光區域。全遮光區域的形狀大小與主體區域的形狀大小 相同’特殊遮光區域的形狀大小與邊緣區域的形狀大小相 门遮光層覆盍於透明基板之全遮光區域和特殊遮光區 域。多個開口位於特殊遮光區域之遮光層中，這些開口的 面積約小於5微米χ5微米。 根據本發明之上述目的，提出一種光罩，此光罩用以 製造上述彩色濾光片之黑色矩陣。此光罩包含透明基板、 遮光層和多個遮光區塊。透明基板包含多個全遮光區域和 多個特殊遮光區域，全遮光區域的形狀大小與晝素開口的 形狀大小相同，特殊遮光區域的形狀大小與邊緣區域的形 狀大小相同。遮光層覆蓋於透明基板之全遮光區域。多個 遮光區塊覆蓋於透明基板之特殊遮光區域，這些遮光區塊 的面積約小於5微米x5微米。 由上述可知，本發明的彩色濾光片的黑色矩陣，由於 其在與彩色晝素交疊處具有較小的厚度，故交疊於其上的 彩色晝素不會翹起成牛角狀。而能平鋪在彩色濾光片的透 明基板上。不只是彩色晝素的表面能達到平坦，彩色濾光 片整體的平坦度也大有提昇。故不再會因為彩色濾光片的 不平坦’影響到液晶層中液晶分子的配向排列，造成液晶 顯示器產生漏光的現象。此外，各個彩色晝素的表面平坦 7 200807039 度提：，液晶顯示器上各個晝素能更忠實呈現液晶顯示器 預疋的色I而不會發生晝素顯示的顏色邊緣色彩和 心色彩不一的問題。 纟發明的光罩在對應於黑色矩陣與彩色晝素交疊處的 輯中具有多個開口或多個遮光區塊。當用正型光阻的方 式，造黑色矩陣時，這些開口可以增加微影曝光時的光通 過量。當用負型光阻的方式製造黑色矩陣時，這些遮光區 • _可用來減少微影曝光時的光通過量。因而藉由開口或 遮光區塊調節光亮，可製造出在與彩色晝素交疊處具有較 小的厚度的黑色矩陣。並且，本發明的光罩還可藉由光罩 t開口或遮光區塊的大小、數目和形狀來調變黑色矩陣與 彩色晝素交疊處的厚度和坡度。 【實施方式】 第1圖係繪示習知彩色濾光片之結構剖面圖。在透明 藝基板110上具有紅色晝素i 20、綠色晝素2 22、藍色晝素124 和黑色矩陣130。紅色畫素120、綠色畫素122、藍色晝素 124將來自背光模組的光或外部環境的入射光過濾成紅綠 藍二原色，再藉由液晶顯示器中的液晶調控各色光的光 里，混合出所需的色彩。黑色矩陣13〇位於上述彩色畫素 的父界處，除了可區隔彩色晝素，提昇液晶顯示器的對比 外，還可遮避液晶顯示器中位於陣列基板上的電晶體，以 防止漏電流的產生。 在第1圖中，由於黑色矩陣130的厚度高，造成紅色 200807039 晝素120、綠色晝素122和藍色晝素124與黑色矩陣13〇 重疊處高起，形成邊緣翹起的牛角形狀，一般稱此為牛角 段差。 第2A圖係繪示依照本發明一較佳實施例的一種彩色 濾光片的結構剖面圖。由於彩色晝素對特定顏色的光具有 擋光性，因此與彩色晝素交疊處的黑色矩陣不需要與其他 區域的黑色矩陣具有相同的厚度，即可達到相同程度的擋 光性。因此在本發明中降低黑色矩陣與彩色晝素交疊處的 厚度。 為方便述說本發明的概念，將透明基板21〇上的黑色 矩陣230區分為一個主體區域232和對應於彩色晝素的多 個邊緣區域234。在第2A圖中，黑色矩陣23〇位於該透明 基板11〇上，定義出多個晝素開口 250。紅色晝素22〇、綠 色畫素222和藍色晝素224位於晝素開口 25〇中，並且彩 色晝素之邊緣交疊於黑色矩陣23〇之邊緣區域234之上。 由於邊緣區域234的厚度小於主體區域232，當紅色畫素 220、綠色畫素222和藍色晝素224交疊於邊緣區域234之 上時，紅色晝素220、綠色晝素222和藍色畫素224的邊緣 不會翹起成牛角狀。因而解決了習知彩色晝素牛角段差的 問題。故彩色晝素表面和彩色濾光片整體的平坦度大幅增 加。彩色渡光片不再會因為表面的不平坦，而影響到液晶 層中液晶分子的配向排列’使得液晶顯示器產生漏光的現 象。 在較佳的實施例中，透明基板的材質為玻璃或塑膠， 9 200807039 二色矩陣的材質為鉻金屬或樹脂。由於樹脂黑色矩陣的遮 光性不如鉻金屬黑色矩陣，樹脂黑色矩陣的厚度通常會比 絡金屬黑色矩陣來得厚。因此習知使用樹脂黑色矩陣的彩 色濾光片上牛角段差的情形也比習知使用鉻金屬黑色矩陣 的％色濾光片來得嚴重。故本發明的彩色濾光片結構對樹 脂黑色矩陣的牛角段差問題的改善會較鉻金屬黑色矩陣來 得明顯。在較佳實施例中，鉻金屬黑色矩陣的主體區域232 的厚度約為0.13-0.17微米。樹脂黑色矩陣的主體區域232 的厚度約為0.5-1.8微米。 在第2A圖中，黑色矩陣23〇之邊緣區域234的厚度為 定值，亦即邊緣區域234的表面為平坦的。在其他的實施 例，由於彩色晝素愈靠近黑色矩陣的主體區域232的厚度 愈薄，因此黑色矩陣之邊緣區域234的厚度也可不為定值， 而在其表面上形成一坡度。第2B圖係繪示依照本發明另一 車父佳貫施例的一種彩色濾光片的結構剖面圖。在第2b圖 中，其中愈靠近主體區域232的邊緣區域234厚度愈厚， 愈遠離主體區域232的邊緣區域234厚度愈薄。 以下將說明如何運用光罩圖案來製作上述彩色晝素之 黑色矩陣的結構。一般來說，鉻金屬黑色矩陣是使用正型 光阻來完成光罩上圖案的轉移，樹脂黑色矩陣則是使用負 型光阻。由於兩者使用的光阻型式不同，故使用的光罩圖 案也不同。以下將分別針對鉻金屬黑色矩陣和樹脂黑色矩 陣使用的光罩來加以說明。 第3圖係繪示依照本發明一較佳實施例的一種黑色矩 200807039 陣之局部俯視放大圖。第4圖係繪示依照本發明一較佳實 %例的-種製造形色濾光片之鉻金屬黑色矩陣所用之光罩 的局部俯視放大圖。請同時參照第3圖和第4圖，在第4 - 目中光罩主要由透明基板31〇與透明基板31〇上的遮光層 . 330所構成的。由於絡金屬黑色矩陣是採用正型光阻，故第 4圖中光罩上遮光層33G的圖案與第3圖中的黑色矩陣23〇 的圖案大致相同。在第4圖中，在透明基板31〇上有全遮 • 純域332和特殊遮先區域334，全遮光區域332和特殊遞 光區域334分別對應於第3圖中的主體區域说和邊緣區 域234。因此，全遮光區域332的形狀大小與主體區域232 的形狀大小相同，特殊遮光區域334的形狀大小與邊緣區 域234的形狀大小相同。遮光層33〇覆蓋於全遮光區域gw 和特殊遮光區域334之上，其中在特殊遮光區域之遮 光層中有多個開口 340,以增加光通過量。這些開口 的面積約小於5微米χ5微米。因為光阻為正型光阻，且光 鲁罩上特殊遮光區域334的光通過量大於全遮光區域332的 光通過量，故顯影後殘留在黑色矩陣23G之邊緣區域234 的光阻厚度會小於主體區域232的光阻厚度。經餘刻將光 阻圖案轉移到黑色矩陣時，黑色矩陣23〇之邊緣區域以 的厚度2於主體區域232的厚度。故可作出前述在與彩 色晝素交疊處有較小厚度的黑色矩陣。 第s圖係繪示依照本發明一較隹實施例的一種製造彩 色濾光片之樹脂黑色矩陣所屬之光罩的局部俯视放大圖。 由於製造樹廢黑色矩陣所用的光阻為負型光阻，製造鉻金 π 200807039 屬黑色矩陣所用的光阻為正型光陣。困此製造樹顧零色矩 陣所用光罩（第5圖）上遮光層330與遮光區塊341的圖案為 製造鉻金屬黑色矩陣所用先罩（第4圖）上遮光層33〇的互補 圖案。此外，樹廳黑色矩陣本身即是負型先隱，故不需要 再經由蝕刻製程將先&上的圖案轉移到樹脂黑色趣陣❶在 第S圖中，在透明基板310上具有全遮光區域332和特殊 遮光區域334。全遮光區域332的形狀大小與晝素開口 mo φ 的形狀大小相_ ^特殊遮光區域334的形狀大小輿邊緣區 域234的灌狀大小相同r遮先層330覆蓋於透明基板 的全遮光區域332之上。相對於第4圖中在特殊遮光區域 334中有多锢闕口 340,在第S圖中的特殊遮先區域334中 有多個遮光區塊341。這些遮光區塊341的面積約小於5 微米x5微米。由於樹脂黑色矩陣為負型光阻，藉由逭些位 於特殊遮光區域334申鱗遮先區塊341來減少先遢過量， 可製造出邊緣區域厚度較小的黑色矩陣。 φ 上述的開口 340或遮光區塊341皆很小，故僅只是調 節曝光時的光通過量，開口 34〇或遮光區塊341的圖案並 不會跟著轉移到黑色矩陣23〇 i。在較佳實施例中，開口 340或遮光區塊341的形狀為長條狀，開口 34〇或遮光區塊 341的寬度約為〇1_5微米。在其他的實施例中，開口 "ο 或遮光區塊341的形狀也可以圓形或多邊形。另外，開口 _ 340或遮光區塊341在特殊遮光區域334中的密度也可以不 為定值。利用愈靠近全遮光區域332開口 340或遮光區塊 341的密度愈低，愈遠離全遮光區域332開口 340或遮光區 12 200807039 塊341的播度愈南，使知作出的黑色矩陣230在邊緣區域 234的表面有一坡度。如第2B圖所示，愈靠近主體區域232 的邊緣區域234的厚度愈大，愈遠離主體區域232的邊緣 區域234的厚度愈小。 由上述本發明較佳實施例可知，應用本發明具有下列 優點。 (1) 本發明的彩色濾光片的表面平坦度高，故不會影響 到液晶顯示器中液晶層内液晶分子的配向排列，使得液晶 顯示器產生漏光的現象。 (2) 本發明的彩色濾光片的結構能克服彩色晝素的牛角 段差問題，因此彩色濾光片上個別彩色晝素的表面平坦度 咼，能忠實呈現液晶顯示器所預定的色彩，而不會發生書 素顯示的顏色邊緣色彩和中心色彩不一的問題。 (3) 本發明的光罩可藉由光罩上特殊遮光區域之開口或 遮光區塊的大小、數目和形狀來調變黑色矩陣與彩色晝素 交疊處的厚度和坡度。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何所屬領域中具有通常知識者，在不脫離 本發明之精神和範圍内’當可作各種之更動與潤飾，因此 本發明之保護範圍當視後附之申請專利範圍所界定者為 【圖式簡單說明】 為讓本發明之上述和其他目的、特徵、優點與實施例 13 200807039 能更明顯易懂，所附圖式之詳細說明如下： 第1圖係繪示習知彩色濾光片之結構剖面圖。 第2A圖係繪示依照本發明一較佳實施例的一種彩色 渡光片的結構剖面圖。 第2Β圖係繪示依照本發明另一較佳實施例的一種彩 色濾光片的結構剖面圖。 第3圖係繪示依照本發明一較佳實施例的一種黑色矩 m 陣之局部俯視放大圖。 第4圖係繪示依照本發明一較佳實施例的一種製造彩 色濾光片之鉻金屬黑色矩陣所用之光罩的局部俯視放大 圖。 第5圖係繪示依照本發明一較佳實施例的一種製造彩 色濾光片之樹脂黑色矩陣所用之光罩的局部俯視放大圖。 【主要元件符號說明】 110、210 :透明基板 122、222 :綠色晝素 130、230 :黑色矩陣 234 :邊緣區域 31〇 :透明基板 332 ·全遮光區域 340 :開口 120、220 :紅色晝素 124、224 :藍色畫素 232 :主體區域 250 ·晝素開口 330 :遮光層 334 :特殊遮光區域 341 :遮光區塊200807039 IX. DESCRIPTION OF THE INVENTION: 1. Field of the Invention The present invention relates to a color filter and a photomask for use in the manufacture, and more particularly to a color filter for a liquid crystal display and a photomask for manufacturing. [Prior Art] The main operation principle of the liquid crystal display device is to control the intensity of the light passing through the pixel region by using the liquid crystal molecules to change the alignment direction by the influence of the electric field, so as to achieve the purpose of displaying different bright and dark signals. For low-end products such as watches and electronic leaf machines, only liquid crystal displays with bright and dark states are sufficient. However, in order to display grayscale patterns and complex images, it is necessary to adjust the degree of rotation of the liquid crystal molecules by changing the magnitude of the voltage applied to each element to control the amount of light per crystal. As for the color liquid crystal display for multimedia which can display a variety of vivid colors, it is also necessary to add a color light film. The red, green and blue colored color elements on the color filter can be used to filter the backlight module or the external environment, and turn into red, green and blue primary colors, and then pass the liquid crystal control in the liquid crystal display through the red, green and blue. The amount of light in the color pixels mixes all kinds of ever-changing colors. Therefore, the color filter is a major contributor to the colorization of the liquid crystal display. It is also one of the most critical components of LCDs. The quality of the color light film has a decisive influence on the color display capability and display effect of the liquid crystal display. One of the indicators that determines the quality of a color filter is color filter 5 200807039 The flatness of the surface of the sheet. Because of the architecture of the display, the color filter is located quite close to the liquid crystal layer. Therefore, the flatness of the surface of the color filter affects the flatness of the liquid crystal layer, affecting the alignment of the liquid crystal molecules in the liquid crystal layer, so that the liquid crystal molecules cannot accurately control the amount of light passing through the halogen region. Therefore, light leakage occurs, and the display performance of the liquid crystal display is also lowered. In addition, the color filter and the unevenness of the surface of the color element on the light sheet may also affect the display performance of the display. Because of the unevenness of the surface of the colored alizarin, some of the light cannot pass through individual color pixels because of diffraction or refraction. This will not only cause the brightness of the liquid crystal display to decrease, but also affect the appearance of the pixel color, so that the color edge color and the center color of the pixel display are different. [The present invention] Therefore, the object of the present invention is to provide a color. The light film and the reticle used in manufacturing. The surface of the color filter has a high degree of flatness, so $ will affect the alignment of the liquid crystal molecules in the liquid crystal layer. In addition, the surface of the individual color elements on the color filter and the light sheet is also relatively flat, so that the color predetermined by the liquid crystal display can be faithfully presented without the problem of color edge color and center color of the pixel display. According to the above object of the present invention, a color light guide sheet is proposed. The color enamel sheet comprises a transparent substrate, a black matrix and a plurality of colored pixels. Black (4) is located on the transparent substrate to define a plurality of pixel openings. The black matrix has a body region and a plurality of edge regions. The thickness of the edge region is smaller than the thickness of the body region. The color element is located in the opening of the pixel, and the edge of the color element 6 200807039 overlaps the edge area. In accordance with the above objects of the present invention, a photomask is provided for fabricating a black matrix of the above color filters. The reticle includes a transparent substrate, a light shielding layer, and a plurality of openings. The transparent substrate includes a full shading area and a plurality of special shading areas. The shape of the full light-shielding region is the same as the shape of the body region. The shape and size of the special light-shielding region and the shape and size of the edge region are covered by the light-shielding layer of the transparent substrate and the special light-shielding region. A plurality of openings are located in the opacifying layer of the particular opaque region, the openings having an area of less than about 5 microns χ 5 microns. In accordance with the above objects of the present invention, a photomask is provided for fabricating a black matrix of the above color filters. The reticle comprises a transparent substrate, a light shielding layer and a plurality of light shielding blocks. The transparent substrate comprises a plurality of full light-shielding regions and a plurality of special light-shielding regions, and the shape of the full light-shielding region is the same as the shape of the aperture opening, and the shape of the special light-shielding region is the same as the shape of the edge region. The light shielding layer covers the entire light shielding area of the transparent substrate. A plurality of opaque blocks cover a special opaque area of the transparent substrate, the area of the opaque blocks being less than about 5 microns x 5 microns. As apparent from the above, since the black matrix of the color filter of the present invention has a small thickness at the place where it overlaps with the color element, the color element overlapping thereon does not rise to a horn shape. It can be tiled on a transparent substrate of a color filter. Not only is the surface of the color element flat, but the overall flatness of the color filter is also greatly improved. Therefore, the uneven alignment of the color filter does not affect the alignment of the liquid crystal molecules in the liquid crystal layer, causing light leakage of the liquid crystal display. In addition, the surface of each color element is flat. 7 200807039 Degree: The various elements on the liquid crystal display can more faithfully present the color I of the liquid crystal display without the problem of color edge color and heart color of the pixel display. . The reticle of the invention has a plurality of openings or a plurality of opaque blocks in a portion corresponding to the intersection of the black matrix and the color scent. When a black matrix is created by a positive photoresist, these openings increase the amount of light passing through the lithographic exposure. When a black matrix is fabricated by a negative photoresist, these opaque areas can be used to reduce the amount of light passing through the lithographic exposure. Thus, by adjusting the brightness by the opening or the shading block, a black matrix having a smaller thickness at the overlap with the color element can be produced. Moreover, the reticle of the present invention can also modulate the thickness and slope of the intersection of the black matrix and the color element by the size, number and shape of the reticle opening or the opaque block. [Embodiment] FIG. 1 is a cross-sectional view showing the structure of a conventional color filter. On the transparent art substrate 110, there are red halogen i 20, green halogen 2 22, blue halogen 124 and black matrix 130. The red pixel 120, the green pixel 122, and the blue pixel 124 filter the light from the backlight module or the incident light of the external environment into two primary colors of red, green and blue, and then adjust the light of each color by the liquid crystal in the liquid crystal display. Mix out the desired color. The black matrix 13〇 is located at the parent boundary of the above color pixels, in addition to separating the color pixels, improving the contrast of the liquid crystal display, and also avoiding the transistor on the array substrate in the liquid crystal display to prevent leakage current generation. . In the first figure, since the thickness of the black matrix 130 is high, the red 200807039 halogen 120, the green halogen 122, and the blue halogen 124 overlap with the black matrix 13〇, and the horn shape of the edge is raised. Call this the horn angle difference. Figure 2A is a cross-sectional view showing the structure of a color filter in accordance with a preferred embodiment of the present invention. Since the color element has a light-blocking property to light of a specific color, the black matrix at the intersection with the color element does not need to have the same thickness as the black matrix of the other areas, and the same degree of light blocking property can be achieved. Therefore, in the present invention, the thickness at which the black matrix overlaps with the colored halogen is lowered. For convenience of the concept of the present invention, the black matrix 230 on the transparent substrate 21 is divided into a body region 232 and a plurality of edge regions 234 corresponding to the color pixels. In Fig. 2A, a black matrix 23 is positioned on the transparent substrate 11A to define a plurality of pixel openings 250. The red halogen 22〇, the green pixel 222, and the blue halogen 224 are located in the pixel opening 25〇, and the edges of the colored pixels overlap the edge region 234 of the black matrix 23〇. Since the thickness of the edge region 234 is smaller than the body region 232, when the red pixel 220, the green pixel 222, and the blue pixel 224 overlap above the edge region 234, the red halogen 220, the green halogen 222, and the blue color are drawn. The edge of the prime 224 does not curl up into a horn. Therefore, the problem of the conventional color varietal horn section difference is solved. Therefore, the flatness of the color surface and the color filter as a whole is greatly increased. The color light-emitting sheet no longer affects the alignment of the liquid crystal molecules in the liquid crystal layer due to the unevenness of the surface, causing the liquid crystal display to cause light leakage. In a preferred embodiment, the transparent substrate is made of glass or plastic, 9 200807039 The two-color matrix is made of chrome metal or resin. Since the resin black matrix is less opaque than the chrome metal black matrix, the thickness of the resin black matrix is usually thicker than the metal black matrix. Therefore, it is known that the case of the horn angle difference on the color filter using the resin black matrix is also more serious than the conventional use of the chrome metal black matrix of the % color filter. Therefore, the color filter structure of the present invention can improve the horn angle difference problem of the resin black matrix more obviously than the chrome metal black matrix. In a preferred embodiment, the body region 232 of the chrome metal black matrix has a thickness of between about 0.13 and about 0.17 microns. The body region 232 of the resin black matrix has a thickness of about 0.5 to 1.8 microns. In Fig. 2A, the thickness of the edge region 234 of the black matrix 23 is set to a value, that is, the surface of the edge region 234 is flat. In other embodiments, the thinner the color element is closer to the thickness of the body region 232 of the black matrix, the thickness of the edge region 234 of the black matrix may not be constant, and a slope is formed on the surface thereof. Fig. 2B is a cross-sectional view showing the structure of a color filter according to another embodiment of the present invention. In Fig. 2b, the thicker the edge region 234 closer to the body region 232, the thinner the edge region 234 from the body region 232. The structure of the black matrix of the above-described color enamel is described below using the reticle pattern. In general, chrome-metal black matrices use positive-type photoresists to transfer patterns on the reticle, while resin black matrices use negative-type photoresists. Since the resist patterns used in the two are different, the reticle pattern used is different. The reticle used for the chrome metal black matrix and the resin black matrix will be described below. Figure 3 is a partially enlarged plan view showing a matrix of black moments 200807039 in accordance with a preferred embodiment of the present invention. Fig. 4 is a partially enlarged plan view showing a reticle for use in a chrome metal black matrix for producing a color filter according to a preferred embodiment of the present invention. Referring to FIG. 3 and FIG. 4 simultaneously, in the fourth embodiment, the photomask is mainly composed of a transparent substrate 31 and a light shielding layer 330 on the transparent substrate 31. Since the solid metal black matrix is a positive type resist, the pattern of the light-shielding layer 33G on the mask in Fig. 4 is substantially the same as the pattern of the black matrix 23'' in the third figure. In Fig. 4, on the transparent substrate 31, there are a full mask 332 and a special mask region 334, and the full light-shielding region 332 and the special light-receiving region 334 correspond to the body region and the edge region in Fig. 3, respectively. 234. Therefore, the shape of the full light-shielding region 332 is the same as the shape of the body region 232, and the shape of the special light-shielding region 334 is the same as the shape of the edge region 234. The light shielding layer 33 is covered over the total light-shielding region gw and the special light-shielding region 334, wherein a plurality of openings 340 are formed in the light-shielding layer of the special light-shielding region to increase the light throughput. These openings have an area of less than about 5 microns χ 5 microns. Since the photoresist is a positive photoresist, and the light passage amount of the special light-shielding region 334 on the light-shielding cover is larger than the light-passing amount of the total light-shielding region 332, the thickness of the photoresist remaining in the edge region 234 of the black matrix 23G after development is smaller than that. The photoresist thickness of the body region 232. When the photoresist pattern is transferred to the black matrix by the remainder, the edge region of the black matrix 23 is at a thickness 2 of the thickness of the body region 232. Therefore, the aforementioned black matrix having a small thickness at the overlap with the color element can be made. Figure s is a partially enlarged plan view showing a reticle to which a resin black matrix for producing a color filter according to a comparative embodiment of the present invention. Since the photoresist used to make the waste black matrix of the tree is a negative photoresist, the chrome-plated π 200807039 is a positive-type light array used for the black matrix. The pattern of the light-shielding layer 330 and the light-shielding block 341 on the photomask (Fig. 5) used for the array is a complementary pattern of the light-shielding layer 33〇 on the hood (Fig. 4) used for the chrome-metal black matrix. In addition, the tree matrix black matrix itself is a negative type first hidden, so there is no need to transfer the pattern on the first & to the resin black fun array through the etching process. In the S picture, the transparent substrate 310 has a full light-shielding area. 332 and special shading area 334. The shape of the total light-shielding region 332 is different from the shape of the pixel opening mo φ. The shape of the special light-shielding region 334 is the same as that of the edge region 234. The mask layer 330 covers the total light-shielding region 332 of the transparent substrate. on. In contrast to Fig. 4, there are a plurality of openings 340 in the special light-shielding region 334, and a plurality of light-blocking blocks 341 in the special masking region 334 in the Figure S. The area of these shading blocks 341 is less than about 5 microns x 5 microns. Since the resin black matrix is a negative photoresist, a black matrix having a small thickness in the edge region can be manufactured by reducing the amount of the first enthalpy in the special opaque region 334. φ The above-mentioned opening 340 or light-shielding block 341 is small, so that only the light throughput at the time of exposure is adjusted, and the pattern of the opening 34 〇 or the light-shielding block 341 does not follow the transfer to the black matrix 23 〇 i. In the preferred embodiment, the opening 340 or the light shielding block 341 has a strip shape, and the width of the opening 34 or the light shielding block 341 is about _1_5 μm. In other embodiments, the shape of the opening " or the shading block 341 may also be circular or polygonal. In addition, the density of the opening_340 or the shading block 341 in the special shading area 334 may not be constant. The lower the density of the opening 340 or the light-shielding block 341 is closer to the full light-shielding region 332, the farther away from the full-light-shielding region 332 opening 340 or the light-shielding region 12 200807039, the southerness of the block 341 is made south, so that the black matrix 230 is made in the edge region. The surface of 234 has a slope. As shown in Fig. 2B, the greater the thickness of the edge region 234 closer to the body region 232, the smaller the thickness of the edge region 234 from the body region 232. It will be apparent from the above-described preferred embodiments of the present invention that the application of the present invention has the following advantages. (1) The color filter of the present invention has a high surface flatness, so that it does not affect the alignment of liquid crystal molecules in the liquid crystal layer in the liquid crystal display, resulting in light leakage of the liquid crystal display. (2) The structure of the color filter of the present invention can overcome the problem of the horn angle difference of the color enamel. Therefore, the surface flatness of the individual color enamels on the color filter can faithfully present the color predetermined by the liquid crystal display without There is a problem that the color edge color and the center color of the pixel display are different. (3) The reticle of the present invention can modulate the thickness and slope of the intersection of the black matrix and the color sinus by the size, number and shape of the opening or the opaque block of the special opaque area on the reticle. While the present invention has been described in its preferred embodiments, it is not intended to limit the invention, and it is intended that various modifications and changes can be made without departing from the spirit and scope of the invention. Therefore, the scope of the present invention is defined by the scope of the appended claims. The above and other objects, features and advantages of the present invention and the embodiment 13 200807039 can be more clearly understood. The detailed description of the drawings is as follows: Fig. 1 is a cross-sectional view showing the structure of a conventional color filter. Figure 2A is a cross-sectional view showing the structure of a color light-passing sheet in accordance with a preferred embodiment of the present invention. Figure 2 is a cross-sectional view showing the structure of a color filter in accordance with another preferred embodiment of the present invention. Figure 3 is a partially enlarged plan view showing a black matrix m array in accordance with a preferred embodiment of the present invention. Figure 4 is a partial plan enlarged view of a reticle for use in fabricating a chrome metal black matrix of color filters in accordance with a preferred embodiment of the present invention. Figure 5 is a partial plan enlarged view of a reticle for use in fabricating a resin black matrix of color filters in accordance with a preferred embodiment of the present invention. [Description of main component symbols] 110, 210: transparent substrate 122, 222: green halogen 130, 230: black matrix 234: edge region 31 〇: transparent substrate 332 · full light-shielding region 340: opening 120, 220: red halogen 124 224: blue pixel 232: main body area 250 · halogen opening 330: light shielding layer 334: special light shielding area 341: light shielding block