1224212 玖、發明說明 (發明說明應敘明：發明所屬之技術領域、先前技術、內容、實施方式及圖式簡單說明） 一、 發明所屬之技術領域 本發明係關於一種彩色濾光片之製造方法，尤指一種 適用於以Ink-jetting方法製造彩色濾光片之方法。 5 二、 先前技術 近年來彩色液晶顯示器之需求量大幅成長，在製造量 增加的同時，廠商亦致力於降低液晶顯示器之生產成本， 其中彩色濾光片則佔生產成本之一相當比重。 10 一般傳統製造彩色濾光片的方法包括有印刷法傷 (printing method)、電沈積法（electrodeposition method)、 染色法（staining method)、或者色料分散法（pigment dispersion method)等等。 近來之彩色濾光片生產方法，則主要以Ink j etting技術 I5為主，該技術係由Seiko-Epson和Canon公司所發展出來， 並可見於專利文獻之記載。例如歐洲專利Ep丨丨22560 —案 之中，揭示一種製造彩色濾光片的方法，係先於一透明基 板上形成一光罩層，接著再形成另一光罩層以形成一光阻馨 擋水牆，以定義複數個墨水填入區；接著利用一墨水喷頭 20將特定墨水填入該些墨水填入區，其中該墨水中之固體成 分係佔墨水至少2〇%重量百分比。該種方法之缺點在於， 其所使用之傳統墨水材料係以水溶性色料溶液為主，而喷 墨頭多為bubble-based噴墨頭，使用之墨水材料時常因為色 度上的考量而必須調整其固體含量，然而調整時卻會遭遇 25於臨界黏度過低的限制。另一方面，因所形成之為ς水牆 6 1224212 必須要能將墨水材料形成於墨水填入區中， τ 1墨水的表面 必須形成半圓凸形並分散至sidewam由於其擋水牆多 為具有矩形橫截面者，因此當墨水量控制不均時，墨=非 常容易溢出墨水填入區，進而影響到晝面之清晰度（或銳 利度（sharpness))。 ❿ 而在另-相關專利EP1048700中也揭示關於彩色渡光 片之材質以及濾光片製造方法，其中該材質包括一著色 劑、一黏合樹脂以及一在常壓下沸點高於245。〇之溶劑。然 該專利文獻揭示之方法具有先天之缺點，其擒水牆材質與 10墨水材質之間需相互適當搭配（若擋水牆為非極性，而墨 水為極性的情況下，墨水在擋水牆表面將會成為凸表面而 非凹表面），由於著墨數次之後墨水將會溢出擋水牆，如 圖2所示，若不控制墨水與擋水牆之間的張力問題，溢出之 墨水將會影響每一像素之銳利度。但是張力問題之控制又 I5將限制所可以適用之墨水在擋水牆材料種類，是以製造成 本高且材料來源受限制。 因此，亟需一種可以解決墨水溢出像素區域、同時亦 能維持此種Ink-jetting方法優點之彩色濾光片製造方法。 20 三、發明内容 本發明之主要目的係在提供一種彩色濾光片之製造 方法’俾能擴展Ink-jetting方法製造彩色濾光片之墨水及光 阻材料選擇，延伸lnk-jetting方法墨水及光阻材料之來源， 降低墨水及光阻材料之成本，並簡化彩色濾光片之製造步 7 =同日寸’無須因為措水牆與墨水之間的材質搭配選擇， 限制了擋水牆或者墨水材質之選擇。 古、、本發明之另—目的係在提供-種彩色濾、光片之製造 法、，俾能提高彩色濾、光片在每_像素之銳利度。 為達成上述目的，本發明之—種彩色滤光片之製作方 ^ ’包括以下步驟：提供—基板，該基板具有—上表面. 找基，上形成複數個第—阻隔條以及複數個與該第一阻 ^條：交之第二阻隔條以定義複數個下凹之像素區域，其 /亥弟-阻隔條具有上寬下窄之倒梯形或「丁」型橫截面， 母一該第一阻隔條具有一第一 具有二笛n 士 貝面且母一该弟二阻隔條 .,—®，滴人墨水於該些像素區域之中；供烤該 15 二t使得所滴人之墨水乾燥後形成—墨層；當該墨層血 二弟：：面或該第二頂面等高時，塗佈一保護層於該基板 、中該些第-阻隔條及第二阻隔條係夾置 及該基板之間；以及形成—透明電極層於該保護層之上 間而言之’本發明係將習知之直角形播水牆結構，改 :為上寬下窄之倒梯形或「T」型結構，使得墨水填入每 一 ^素之後，由於其財牆所形成之像素區域剖面如同一 下寬上窄之燒絲，因此墨水會因為其本身之 於該像素區域之中，並且藉由底部與撞水牆之間小於九^ 度之夹角’使得烤乾後之墨水臈逐漸達到與播水牆等高之 平緩表面。 四、實施方式 20 隔條之材質及妒成明中§亥些第—阻隔條以及第二阻 彻製程形=;:限：:較佳係由黑色負型光阻 5 =無限制’較佳為親水性墨水，更佳為係選型 墨水、感光溶劑型墨水、以艿劫成儿， ⑷主 本發明H P # # 賴組成之群組。 _，相互平行本::==’較佳為該第- 之乂<土為该弟二阻隔條間相互平行。本發明中所使用 -阻=7及該第二阻隔條相交方式無限制，較佳為第 阻隔條及該第二阻隔條係垂直交錯。 為能讓貴審查委員能更瞭解本發明之技術内 舉一較佳具體實施例說明如下。 請參見I，此係本發明彩色遽光片製作方法中各步 方Γ::意圖。在圖μ，係先在一基板1上以微影钱刻 形成複數個上寬下窄的第一擋水牆2,該些第一播水 =皮此之間係平行且具有一距離a。接著以相同的方式在該 上另外形成複數個上寬下窄之第二擋水牆（由於與剖 :方向平行，故圖中未示）’該些第二擋水牆 與於第—財❹直交錯，並且藉由第—擔水牆2與第一; 水牆’定義出複數個像素區w1(pixel)。其中，該些擔水 牆之材質並無限制，可為習用之擔水牆樹mresin bl田ack matrix)如黑色負型光阻等。 接著請參見圖lb’在此步驟中，主要係利用一墨水喷 頭3將墨水注入該像素區域21之中。如圖所示，所注入之墨 1224212 5 15 20 水4曰將會在像素區域以的内部區域之角落，因為墨水本身滴 入量少’墨水具有内聚力或者由於墨水與擋水牆之間極性 I同’而先成為-半凸圓形水滴。與先前技術中相較，在 丽案EP1048700中主要即係以調配不同極性之墨水及擋水 牆，而達成半凸圓形之墨水，進而防止墨水溢出像素區域 21而影響所顯示之銳利度。而本發明在此一步驟之中係利 用倒梯形撞水膽代替習知矩形擋水牆之優點，藉著撞水牆 =與基板之間小於九十度之夾角，可輕易地將墨水定位 # 承木於同一處，而不會輕易地溢出。 接著請參見圖lc，在此步驟中，注入有墨水 預烤程序，使得原本之墨水4中之水分蒸發，留下一 二=4卜如圖所示，該墨水膜_樣會與撞水牆之側壁 =一 t:九十度之央角，此外，墨水膜41亦與基板之 有利於將墨水聚集於特定之夹角處，因此 從Γ低處(有夾角處）開始聚集，使得墨 之優：:'皿出4像素區域21 ’此處亦可以見到本發明 接著請參見圖J d，右 乂 水以及圖卜之預烤牛驟吉中’係重複圖狀注入墨 牆之頂面等高為/ 至墨水膜之厚度累積至與擔水 农後Μ參見圖le，當黑^ 時，塗佈-保護層5於擔水之厚度與擋水牆頂面等高 電極6於該保護層之上，，成墨二，1224212 发明 Description of the invention (the description of the invention should state: the technical field to which the invention belongs, the prior art, the content, the embodiments, and the drawings briefly) 1. The technical field to which the invention belongs The present invention relates to a method for manufacturing a color filter , Especially a method suitable for manufacturing color filters by the Ink-jetting method. 5 2. Prior technology In recent years, the demand for color liquid crystal displays has grown significantly. At the same time as the manufacturing volume has increased, manufacturers are also committed to reducing the production costs of liquid crystal displays. Among them, color filters account for a significant proportion of production costs. 10 Generally, the traditional manufacturing methods of color filters include printing method, electrodeposition method, staining method, pigment dispersion method, and so on. Recent color filter production methods are mainly based on Ink j etting technology I5, which was developed by Seiko-Epson and Canon and can be found in the patent literature. For example, in European Patent Ep 丨 丨 22560-a method for manufacturing a color filter is disclosed. A mask layer is formed on a transparent substrate, and then another mask layer is formed to form a photoresist block. A water wall is used to define a plurality of ink filling areas; a specific ink is filled into the ink filling areas by an ink nozzle 20, wherein the solid content of the ink accounts for at least 20% by weight of the ink. The disadvantage of this method is that the traditional ink materials used are mainly water-soluble colorant solutions, and the inkjet heads are mostly bubble-based inkjet heads. The ink materials used are often necessary due to chromaticity considerations. Adjust its solid content, but it will encounter a limit of 25 when the critical viscosity is too low. On the other hand, because it is a water wall 6 1224212, it is necessary to be able to form the ink material in the ink filling area. The surface of τ 1 ink must be formed into a semi-circular convex shape and dispersed to the sidewam. For rectangular cross-sections, when the ink volume is not uniformly controlled, ink = very easily overflows the ink filling area, which affects the sharpness (or sharpness) of the daytime surface. ❿ The other related patent EP1048700 also discloses the material of the color filter and the manufacturing method of the filter, wherein the material includes a colorant, an adhesive resin and a boiling point higher than 245 at normal pressure. 〇 的 solvent. However, the method disclosed in this patent document has inherent disadvantages. The material of the trapping wall and the material of 10 inks must be properly matched with each other. (If the water retaining wall is non-polar and the ink is polar, the ink is on the surface of the water retaining wall. Will become a convex surface instead of a concave surface), because the ink will overflow the retaining wall after a few times of inking, as shown in Figure 2, if the tension between the ink and the retaining wall is not controlled, the overflowing ink will affect the The sharpness of each pixel. However, the control of tension problem I5 will limit the types of inks that can be used in the retaining wall materials, because of the high manufacturing cost and limited material sources. Therefore, there is an urgent need for a color filter manufacturing method that can solve the ink overflow pixel area while maintaining the advantages of this ink-jetting method. 20 III. Summary of the Invention The main purpose of the present invention is to provide a method for manufacturing a color filter, which can extend the ink-jetting method for manufacturing color filters by expanding the ink-jetting method, and extend the ink-light method of lnk-jetting. The source of resist materials, reduce the cost of ink and photoresist materials, and simplify the manufacturing steps of color filters. 7 = Same inch 'No need to choose the material combination between the water wall and ink, which limits the material of the water retaining wall or ink. Of choice. Another purpose of the present invention is to provide a method for manufacturing a color filter and a light sheet, which can improve the sharpness of the color filter and the light sheet per pixel. In order to achieve the above object, a method for producing a color filter of the present invention includes the following steps: providing a substrate, the substrate having an upper surface. Finding a base, forming a plurality of first-barrier strips and a plurality of First barrier bar: The second barrier bar intersects to define a plurality of recessed pixel regions, and its / Hydi-barrier bar has an inverted trapezoidal or "D" -shaped cross section with an upper width and a narrower width. The barrier strip has a first barrier strip with two flutes n spades and a female barrier strip,..., Dripping ink in the pixel areas; for baking the 15 t, the dripping ink is dried. After the formation-ink layer; when the second layer of the ink layer: the surface or the second top surface is equal in height, a protective layer is coated on the substrate, the first barrier strips and the second barrier strips are sandwiched. Between the substrate and the substrate; and the formation of a transparent electrode layer on top of the protective layer. The present invention is to change the conventional rectangular water-spreading wall structure to an inverted trapezoid or "T" with an upper width and a narrow width. Type structure, after the ink is filled into each element, the pixel area section formed by its wealth wall The same width of the top and bottom of the burned wire, so the ink will be in the pixel area, and by the angle between the bottom and the water wall is less than nine ^ degrees, the ink will be gradually dried A smooth surface with the height of a watering wall. Fourth, Embodiment 20 The material of the spacer and the jealousy Chengming § Some of the first-the barrier and the second barrier process shape = ;: Limit :: The better is the black negative photoresistor 5 = No limit 'better It is a hydrophilic ink, more preferably a selection ink, a photosensitive solvent ink, and a group consisting of HP # # 赖 of the present invention. _, Parallel to each other :: == ’It is preferable that the first-and the second soil are parallel to each other. In the present invention, there are no restrictions on the intersection of -resistance = 7 and the second barrier strip, preferably the first barrier strip and the second barrier strip are staggered vertically. In order to make your reviewers better understand the technology of the present invention, a preferred embodiment will be described below. Please refer to I. This is the steps Γ :: intention in the manufacturing method of the color phosphor film of the present invention. In the figure μ, a plurality of first water retaining walls 2 with upper width and lower width are engraved on a substrate 1 with lithographic money. The first water-spreading surfaces are parallel and have a distance a. Then, in the same manner, a plurality of second water retaining walls with upper width and lower width are formed on the upper side (because they are parallel to the section: direction, so not shown in the figure). Straight staggered, and by the first-the water wall 2 and the first; the water wall 'defines a plurality of pixel areas w1 (pixel). Among them, the material of these water-bearing walls is not limited, and can be a conventional water-bearing tree (such as a black negative photoresistor). Next, please refer to FIG. 1b '. In this step, an ink jet head 3 is mainly used to inject ink into the pixel area 21. As shown in the figure, the injected ink 1224212 5 15 20 water 4 will be in the corner of the inner area of the pixel area, because the ink itself drips less, the ink has cohesion or because of the polarity between the ink and the water retaining wall Same as' and first became-semi-convex circular water drops. Compared with the prior art, in the case of EP1048700, the ink of the different polarities and the water retaining wall is mainly used to achieve a semi-convex ink, thereby preventing the ink from overflowing the pixel area 21 and affecting the displayed sharpness. In this step, the present invention uses the advantages of an inverted trapezoidal water tank to replace the conventional rectangular water retaining wall. The ink can be easily positioned by the angle between the water wall and the substrate less than ninety degrees # The wood is in the same place without overflowing easily. Please refer to FIG. Lc. In this step, the ink pre-baking process is injected, so that the water in the original ink 4 evaporates, leaving 12 = 4. As shown in the figure, the ink film will collide with the water wall. The side wall = one t: the central angle of ninety degrees. In addition, the ink film 41 and the substrate are also beneficial to gather the ink at a specific angle. Therefore, the ink film starts from the lower position of Γ (where there is an angle), so that the ink Excellent :: 'Dish out 4 pixel area 21' The invention can also be seen here. Then see Figure Jd. The height is equal to / to the thickness of the ink film accumulated with the water-bearing farmer. See FIG. Le, when black ^, the coating-protection layer 5 is on the thickness of the water-bearing layer and the top electrode 6 on the top of the retaining wall is protected. Above the layers, Cheng Mo II,
中，仅，腐c P 70成了衫色濾光片之製造。JL '、之材料並無限制’可以是習用之保護層材料， 10 1224212 包括PMMA。而透明雷杜，丄Only, the rot c P 70 became the manufacture of shirt color filters. JL ', the material is not limited' may be a conventional protective layer material, 10 1224212 including PMMA. And transparent Redu, 丄
攻乃逼極6亦無限制，可以是習用之透明ITO 電極等。 k本貝轭例中可以得知，本發明之最大特點係在於將 習知擔水牆與基板之Μ + 4 之間的直角交界改變為小於九十度之夾 角，使得注入墨水之德，M u人π & i I俊墨水會聚集在此交會處，烘烤之 後形成墨水膜，又形点_ + 成另一夾角，有利於聚集墨水，防止 墨水溢出像素區域，進而銥豹 、 叻此夠使付母一像素之銳利度不會 因為以往之墨水溢出問題而降低。 上述實施例僅係為了方便說明而舉例而已，本發明所 主張之權·圍自應Μ請專·圍所述為準， 於上述實施例。 五、圖式簡單說明 圖la至圖le係本發明實施例之各步驟剖面示意圖 15圖2係習知彩色濾光片之製造方法剖面示意圖。There is no limit to the attack on the pole 6. It can be a conventional transparent ITO electrode. It can be known from the example of this shell yoke that the biggest feature of the present invention is that the right-angle interface between the conventional water-bearing wall and the substrate M + 4 is changed to an angle less than ninety degrees, so that the virtue of ink injection, M The u ink will gather at this intersection. After baking, an ink film will be formed, and the dot will form another angle. It will help to gather the ink and prevent the ink from overflowing the pixel area. Ensuring that the sharpness of the sub-pixel is not reduced due to past ink overflow problems. The above embodiments are merely examples for the convenience of description. The rights claimed in the present invention should be as described in the application. V. Brief Description of Drawings Figs. 1a to 1e are schematic sectional views of the steps of the embodiment of the present invention. Fig. 2 is a schematic sectional view of a manufacturing method of a conventional color filter.
六、 圖號說明 1 基板 2 第一擋水牆 4 墨水 41墨水膜 5 保護層 6 透明電極 21 像素區域 11Explanation of drawing numbers 1 Substrate 2 First water retaining wall 4 Ink 41 Ink film 5 Protective layer 6 Transparent electrode 21 Pixel area 11