TWI417767B - Method for manufacturing multi - touch liquid crystal display panel - Google Patents
Method for manufacturing multi - touch liquid crystal display panel Download PDFInfo
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- TWI417767B TWI417767B TW97140023A TW97140023A TWI417767B TW I417767 B TWI417767 B TW I417767B TW 97140023 A TW97140023 A TW 97140023A TW 97140023 A TW97140023 A TW 97140023A TW I417767 B TWI417767 B TW I417767B
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Description
本發明係有關一種多點觸控式液晶顯示面板之製造方法，特別是指一種將觸控層製作於液晶胞內(In Cell)方式的多點觸控式液晶顯示面板之製造方法。 The present invention relates to a method for manufacturing a multi-touch liquid crystal display panel, and more particularly to a method for manufacturing a multi-touch liquid crystal display panel in which a touch layer is formed in a liquid crystal cell (In Cell).
習知觸控面板(touch panel)均需在一般顯示面板(LCD或CRT等)本身外加一組觸控裝置後，方能達到具有觸控功能。舉例而言，傳統電阻式觸控面板是利用液晶面板外貼氧化銦錫(ITO)面板(dual panel)來作為觸控檢測，兩面板間利用間隔物(spacer)區隔，當手指觸及觸控面板時，則會將上下面板X-Y信號連接而產生位置信號。另外，如JP63279316專利，則提出一種多點觸控式(Multi-Touch)面板，將ITO面板與以圖案化製作之X-Y多條走線相對，經由X-Y點接觸產生位置信號。 Conventional touch panels require a touch device in addition to a general display panel (LCD or CRT, etc.). For example, a conventional resistive touch panel uses a flat panel of an indium tin oxide (ITO) panel as a touch detection. The two panels are separated by a spacer, and when the finger touches the touch In the case of the panel, the upper and lower panel XY signals are connected to generate a position signal. In addition, as for the JP63279316 patent, a multi-touch panel is proposed in which an ITO panel is opposed to a patterned X-Y plurality of traces, and a position signal is generated via X-Y point contact.
由於上述觸控面板之製作均需將觸控板等元件製作於顯示面板外，因利用貼付方式故會增加面板厚度與重量。 Since the above-mentioned touch panel is manufactured, components such as a touch panel need to be fabricated outside the display panel, and the thickness and weight of the panel are increased by the use of the sticking method.
目前業界為求產品薄化，將觸控層製作於液晶胞內(In Cell)，如US20070195029公開專利，將X-Y控制引線製作於陣列基板側，並在彩色濾光片基板側製作導電凸塊，當手指施力時，導電凸塊會使陣列基板側之觸控元件X-Y接觸導通，經信號處理得到位置信號。請參閱第1A圖所示，液晶層內觸控導通元件230表面具有導電層230b，當手指觸控面板時，因外力P0接觸面板時，觸控導通元件230會促使觸控感測元件ES1、ES2導通而傳 送出位置信號，如第1B圖所示。 At present, in order to thin the product, the touch layer is fabricated in a liquid crystal cell (In Cell). As disclosed in US20070195029, an XY control lead is formed on the side of the array substrate, and conductive bumps are formed on the side of the color filter substrate. When the finger is applied, the conductive bumps cause the touch elements on the array substrate side to be in contact with each other, and the signal is processed to obtain a position signal. Referring to FIG. 1A , the surface of the touch-control element 230 in the liquid crystal layer has a conductive layer 230 b. When the finger touches the panel, the touch-control element 230 causes the touch-sensing element ES1 when the panel is touched by the external force P0. ES2 is passed on The position signal is sent as shown in Figure 1B.
然而，因製作如US20070195029專利之觸控導通元件230時，彩色濾光片基板220側需製作導電凸塊，依彩色濾光片基板220之製作程序(依序製作黑色矩陣、彩色濾光層、ITO透明電極層、液晶間隔物)時需額外製作凸塊於ITO製程前，這種方式會因凸塊形狀而造成ITO爬坡斷線與龜裂。 However, when the touch-control element 230 of the US20070195029 patent is produced, conductive bumps are formed on the side of the color filter substrate 220, and a black matrix, a color filter layer, and a color filter layer are sequentially formed according to the color filter substrate 220. When the ITO transparent electrode layer and the liquid crystal spacer are used, additional bumps are required before the ITO process, which may cause the ITO climbing slope to be broken and cracked due to the shape of the bump.
鑒於以上的問題，本發明的主要目的在於提供一種多點觸控式液晶顯示面板之製造方法，藉由將具有導通功能之觸控導電顆粒製作於液晶胞內，使得面板厚度及重量皆大幅精簡化，可符合電子產品輕薄短小的要求，又，由於只需要在以往陣列基板製程後加入一道觸控導電顆粒的製作步驟，其製程簡單、成本低廉，也能避免電極層產生爬坡斷線與龜裂的現象，將可確保產品良率，並藉以大體上解決先前技術存在之缺失。 In view of the above problems, the main object of the present invention is to provide a method for manufacturing a multi-touch liquid crystal display panel, which is characterized in that the thickness and weight of the panel are greatly reduced by making the conductive conductive particles having the conductive function in the liquid crystal cell. It can meet the requirements of lightness and thinness of electronic products. Moreover, since it only needs to add a step of manufacturing conductive particles after the process of the array substrate, the process is simple and the cost is low, and the breakage of the electrode layer can be avoided. The phenomenon of cracking will ensure product yield and substantially solve the lack of prior art.
因此，為達上述目的，本發明所揭露之多點觸控式液晶顯示面板之製造方法，首先是提供一陣列基板與一對向基板，陣列基板具有相鄰而不導通之第一感應電極與第二感應電極，對向基板具有透明基板以及位於透明基板上之黑色矩陣、彩色濾光層與電極層。此對向基板之製作係和習知技術相同，只要在之後多加入一道觸控層的製作步驟；也就是，利用複數觸控導電顆粒與膠體混合成導電膠體混合物，再塗佈於對向基板之電極層上，並使膠體固化，以將觸控導電顆粒黏著於電極層而與之電性相接。然後，以觸控導電顆粒朝向陣列基板的方式，將陣列基板與對向基板平行設置，對向基板與陣列基板之間形成一液晶胞間隙，最後將液晶層充填於液晶胞間隙內，即完成本發明多點觸控式液晶顯示面板之製作。 Therefore, in order to achieve the above object, a method for manufacturing a multi-touch liquid crystal display panel disclosed in the present invention first provides an array substrate and a pair of substrates, the array substrate having adjacent first sensing electrodes and not The second sensing electrode has a transparent substrate and a black matrix, a color filter layer and an electrode layer on the transparent substrate. The fabrication process of the opposite substrate is the same as the prior art, as long as a step of making a touch layer is added later; that is, the plurality of touch conductive particles are mixed with the colloid to form a conductive colloid mixture, and then coated on the opposite substrate. The electrode layer is cured on the electrode layer to adhere the touch conductive particles to the electrode layer to be electrically connected thereto. Then, the array substrate and the opposite substrate are arranged in parallel so that the touch conductive particles face the array substrate, a liquid crystal cell gap is formed between the opposite substrate and the array substrate, and finally the liquid crystal layer is filled in the liquid crystal cell gap, that is, the completion is completed. The fabrication of the multi-touch liquid crystal display panel of the present invention.
為使對本發明的目的、特徵及其功能有進一步的了解，茲配合圖式詳細說明如下： In order to further understand the purpose, features and functions of the present invention, the drawings are described in detail as follows:
10‧‧‧TFT陣列基板 10‧‧‧TFT array substrate
11‧‧‧第一感應電極 11‧‧‧First sensing electrode
12‧‧‧第二感應電極 12‧‧‧Second sensing electrode
20‧‧‧彩色濾光片基板 20‧‧‧Color filter substrate
21‧‧‧電極層 21‧‧‧electrode layer
30‧‧‧液晶層 30‧‧‧Liquid layer
40‧‧‧觸控導電顆粒 40‧‧‧Touch conductive particles
50‧‧‧膠體 50‧‧‧colloid
60‧‧‧液晶間隔物 60‧‧‧LCD spacers
220‧‧‧彩色濾光片基板 220‧‧‧Color filter substrate
230‧‧‧觸控導通元件 230‧‧‧Touch conduction components
230b‧‧‧導電層 230b‧‧‧ Conductive layer
ES1、ES2‧‧‧觸控感測元件 ES1, ES2‧‧‧ touch sensing components
P0‧‧‧外力 P0‧‧‧External force
第1A圖係先前技術之觸控式液晶顯示面板之示意圖；第1B圖係先前技術之觸控式液晶顯示面板之觸控情形；第2圖係本發明之實施例之多點觸控式液晶顯示面板之製造方法的流程圖；第3A圖~第3E圖係本發明之實施例之多點觸控式液晶顯示面板之製造方法的剖面示意圖；以及第4圖係本發明之實施例之多點觸控式液晶顯示面板之觸控情形。 1A is a schematic diagram of a touch-sensitive liquid crystal display panel of the prior art; FIG. 1B is a touch situation of a touch-sensitive liquid crystal display panel of the prior art; and FIG. 2 is a multi-touch liquid crystal of an embodiment of the present invention; A flowchart of a method of manufacturing a display panel; FIGS. 3A to 3E are schematic cross-sectional views showing a method of manufacturing a multi-touch liquid crystal display panel according to an embodiment of the present invention; and FIG. 4 is a diagram showing an embodiment of the present invention. The touch situation of the touch-sensitive liquid crystal display panel.
為便於說明本發明，以下所舉之較佳實施例乃以薄膜電晶體(TFT)液晶顯示面板之製造方法為代表，在實務上並不限於此。 In order to facilitate the description of the present invention, the preferred embodiments described below are representative of a method of manufacturing a thin film transistor (TFT) liquid crystal display panel, and are not limited thereto in practice.
請參照第2圖，係繪示本發明之實施例所提供之多點觸控式液晶顯示面板之製造方法的流程圖。接著，請一併配合第3A圖~第3E圖，詳細說明本實施例之各個步驟。 Referring to FIG. 2, a flow chart of a method for manufacturing a multi-touch liquid crystal display panel according to an embodiment of the present invention is shown. Next, please cooperate with the 3A to 3E drawings to explain the steps of the embodiment in detail.
首先，如步驟S100與步驟S200，本實施例乃提供一TFT陣列基板10與一彩色濾光片基板(即對向基板)20(請分別參照第3A圖與第3B圖)。 First, in steps S100 and S200, the present embodiment provides a TFT array substrate 10 and a color filter substrate (ie, a counter substrate) 20 (refer to FIGS. 3A and 3B, respectively).
其中，TFT陣列基板10上形成有相鄰但不導通之第一感應電極11與第二感應電極12；而彩色濾光片基板20之製作係如同步驟S210~S230所示，先在透明基板上形成黑色矩陣，再以色材塗佈於黑色矩陣內而形成彩色濾光層，再於彩色濾光層上形成透明金屬或非透明金屬的電極層21(為清楚顯示本發明之特徵，第2B圖中僅繪示有電極層21，其他則省略未示)。前述之黑色矩陣、彩色濾光層與電極層21之製作方式是採用傳統光阻塗佈與曝光顯影方式。 The first and second sensing electrodes 11 and 12 are formed on the TFT array substrate 10, and the color filter substrate 20 is formed on the transparent substrate as shown in steps S210 to S230. Forming a black matrix, applying a color material to the black matrix to form a color filter layer, and forming a transparent metal or non-transparent metal electrode layer 21 on the color filter layer (for clearly showing the features of the present invention, 2B) Only the electrode layer 21 is shown in the drawing, and the others are omitted (not shown). The foregoing black matrix, color filter layer and electrode layer 21 are formed by conventional photoresist coating and exposure development.
然後，如步驟S300所示，將複數觸控導電顆粒40與膠體50混合成一導電膠體混合物，並將其塗佈於彩色濾光片基板20的電極層21上。上述觸控導電顆粒40係具有導電性質，以達到電性導通功效，其材質可為金屬、導電性高分子材料、或是表面包覆有金屬材料之樹脂，其形狀則可為圓球、橢圓球或圓柱狀。 Then, as shown in step S300, the plurality of touch conductive particles 40 and the colloid 50 are mixed into a conductive colloid mixture, and applied to the electrode layer 21 of the color filter substrate 20. The touch conductive particles 40 are electrically conductive to achieve electrical conduction, and the material thereof may be metal, conductive polymer material or resin coated with a metal material, and the shape may be a sphere or an ellipse. Ball or cylinder.
再如步驟S400所示，將膠體50固化，使觸控導電顆粒40能黏著於電極層21而與電極層21彼此電性相接(請見第3C圖)。膠體50可選自樹脂或光阻，其固化方式可利用熱能或光能方式進行全面性或局部加熱或照射的動作，使觸控導電顆粒40可以黏著於整個或局部的電極層21上。以光阻為例，當利用觸控導電顆粒40與光阻之膠體50混合，經塗佈於整個電極層21表面後，再對於光阻進行加熱固化、光罩曝光及顯影，而僅留下適當位置的觸控導電顆粒40(請見第3D圖)。在此，留下的觸控導電顆粒40係指後續兩基板10、20組裝之後在彩色濾光片基板20上相對於陣列基板10之第一感應電極11與第二感應電極12位置的觸控導電顆粒40(進一步說明如后後)。 Further, as shown in step S400, the colloid 50 is cured to allow the touch conductive particles 40 to adhere to the electrode layer 21 to be electrically connected to the electrode layer 21 (see FIG. 3C). The colloid 50 may be selected from a resin or a photoresist, and the curing mode may be performed by means of thermal energy or light energy for comprehensive or local heating or irradiation, so that the touch conductive particles 40 may adhere to the entire or partial electrode layer 21. Taking the photoresist as an example, when the touch conductive particles 40 are mixed with the photoresist 50 of the photoresist, after being applied to the surface of the entire electrode layer 21, the photoresist is heated and cured, the mask is exposed and developed, and only the film is left. Touch conductive particles 40 in place (see Figure 3D). Here, the remaining touch conductive particles 40 refer to the positions of the first sensing electrodes 11 and the second sensing electrodes 12 on the color filter substrate 20 after the assembly of the subsequent two substrates 10 and 20 on the color filter substrate 20 . Conductive particles 40 (further illustrated as follows).
接著，如步驟S500所示，以觸控導電顆粒40朝向陣列基板10且對應於上述第一感應電極11與第二感應電極12的方式，將陣列基板10與彩色濾光片基板20平行設置，使彩色濾光片基板20與陣列基板10之間形成有一液晶胞間隙(Cell Gap)。而觸控導電顆粒40並無支撐液晶胞間隙之作用。因此，可在TFT陣列基板10與彩色濾光片基板20之間利用柱狀的液晶間隔物60加以隔絕，來維持液晶胞間隙，且液晶間隔物60之高度乃高於觸控導電顆粒40之高度。最後，再如步驟S600所示，將液晶層30填充於液晶胞間隙內，即完成本實施例之多點觸控式液晶顯示面板之製作(請見第3E圖)。 Then, as shown in step S500, the array substrate 10 and the color filter substrate 20 are disposed in parallel with the touch conductive particles 40 facing the array substrate 10 and corresponding to the first sensing electrode 11 and the second sensing electrode 12, A liquid crystal cell gap (Cell Gap) is formed between the color filter substrate 20 and the array substrate 10. The touch conductive particles 40 do not support the liquid crystal cell gap. Therefore, the columnar liquid crystal spacers 60 can be isolated between the TFT array substrate 10 and the color filter substrate 20 to maintain the liquid crystal cell gap, and the height of the liquid crystal spacers 60 is higher than that of the touch conductive particles 40. height. Finally, as shown in step S600, the liquid crystal layer 30 is filled in the cell gap to complete the fabrication of the multi-touch liquid crystal display panel of the present embodiment (see FIG. 3E).
此外，請參照第4圖，係繪示本發明之實施例所提供之多點觸控式液晶顯示面板之觸控情形。 In addition, please refer to FIG. 4 , which illustrates a touch situation of a multi-touch liquid crystal display panel provided by an embodiment of the present invention.
當外力P0施加於彩色濾光片基板20之某一觸控位置時，可使得該觸控位置之觸控導電顆粒40接觸於第一感應電極11與第二感應電極12，則第一感應電極11會透過觸控導電顆粒40與電極層21和第二感應電極12達成導通的狀態，而產生該觸控位置之觸控訊號。 When the external force P0 is applied to a touch position of the color filter substrate 20, the touch conductive particles 40 of the touch position may be in contact with the first sensing electrode 11 and the second sensing electrode 12, and then the first sensing electrode The touch signal is generated by the touch conductive particles 40 and the electrode layer 21 and the second sensing electrode 12 to generate a touch signal.
綜上所述，根據本發明所提供之多點觸控式液晶顯示面板之製作方法，係將觸控層製作於液晶胞內，不用如習知般需要外加觸控元件於顯示面板，將可達到面板厚度與重量之精簡化，符合目前電子產品輕薄短小的需求。再者，本發明不需改變一般彩色濾光片基板的製作方法，只要直接利用現有製作好電極層的彩色濾光片基板之構造，將觸控導電顆粒透過膠體黏著於電極層上之適當位置即可，其製程簡易、成本低廉。同時，也因為觸控導電顆粒是製作於電極層外，不會影響電極層的結構，而能夠避免電極層產生爬坡斷線與龜裂的現象，確保產品的良率。 In summary, according to the method for fabricating the multi-touch liquid crystal display panel provided by the present invention, the touch layer is formed in the liquid crystal cell, and it is not necessary to add a touch component to the display panel as is conventional. The simplification of the thickness and weight of the panel is achieved, which meets the current demand for light and thin electronic products. Furthermore, the present invention does not need to change the manufacturing method of the general color filter substrate. As long as the structure of the color filter substrate on which the electrode layer is formed is directly used, the touch conductive particles are adhered to the electrode layer through the colloid. It can be used, its process is simple and the cost is low. At the same time, because the touch conductive particles are fabricated outside the electrode layer, the structure of the electrode layer is not affected, and the phenomenon that the electrode layer is broken and cracked can be avoided, and the yield of the product is ensured.
雖然本發明以前述之實施例揭露如上，然其並非用以限定本發明。在不脫離本發明之精神和範圍內，所為之更動與潤飾，均屬本發明之專利保護範圍。關於本發明所界定之保護範圍請參考所附之申請專利範圍。 Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. It is within the scope of the invention to be modified and modified without departing from the spirit and scope of the invention. Please refer to the attached patent application for the scope of protection defined by the present invention.
10‧‧‧TFT陣列基板 10‧‧‧TFT array substrate
11‧‧‧第一感應電極 11‧‧‧First sensing electrode
12‧‧‧第二感應電極 12‧‧‧Second sensing electrode
20‧‧‧彩色濾光片基板 20‧‧‧Color filter substrate
21‧‧‧電極層 21‧‧‧electrode layer
30‧‧‧液晶層 30‧‧‧Liquid layer
40‧‧‧觸控導電顆粒 40‧‧‧Touch conductive particles
50‧‧‧膠體 50‧‧‧colloid
60‧‧‧液晶間隔物 60‧‧‧LCD spacers
P0‧‧‧外力 P0‧‧‧External force
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|---|---|---|---|---|
| JPS63279316A (en) * | 1987-05-11 | 1988-11-16 | Brother Ind Ltd | See-through type touch system input detector |
| US6501529B1 (en) * | 1999-08-18 | 2002-12-31 | International Business Machines Corporation | Liquid crystal display element integrated with a touch sensor |
| US20070195029A1 (en) * | 2006-02-20 | 2007-08-23 | Samsung Electronics Co., Ltd. | Display panel, display apparatus having the same, and method thereof |
| TW200929121A (en) * | 2007-12-24 | 2009-07-01 | Himark Technology Inc | A chip structure capable of smoothing the slope of signal |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201017486A (en) | 2010-05-01 |
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