TWI590123B - Touch panel and method for printing touch panel - Google Patents
Touch panel and method for printing touch panel Download PDFInfo
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- TWI590123B TWI590123B TW105100767A TW105100767A TWI590123B TW I590123 B TWI590123 B TW I590123B TW 105100767 A TW105100767 A TW 105100767A TW 105100767 A TW105100767 A TW 105100767A TW I590123 B TWI590123 B TW I590123B
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Description
本發明是關於一種觸控面板,且特別是具有分次印刷裝飾層觸控面板。 The present invention relates to a touch panel, and more particularly to a touch-print decorative layer touch panel.
隨著智慧型手機與平板電腦的蓬勃發展,觸控面板在此類掌上型電子裝置的應用上供不應求,促使業界不斷地研發及改良相關的工藝技術,以期能降低觸控面板的生產成本以及製作出更加個性化的觸控面板。 With the rapid development of smart phones and tablets, touch panels are in short supply in the application of such handheld electronic devices, prompting the industry to continuously develop and improve related process technologies, in order to reduce the production cost of touch panels and production. A more personalized touch panel.
傳統上,現有技術中觸控面板區分為可視區和非可視區,可視區主要用於顯現影像畫面和觸控電極的佈設,而非可視區則是多用於可見的導電線路的排布以及各種圖示的排列,在非可視區上通常設置有裝飾層用於遮擋導電線路和顯示出各種圖示。裝飾層的印刷結果直接影響著觸控面板的外觀。 Conventionally, in the prior art, the touch panel is divided into a visible area and a non-visible area. The visible area is mainly used for displaying the image image and the touch electrode, and the non-visible area is mostly used for the arrangement of the visible conductive lines and various The illustrated arrangement is typically provided with a decorative layer on the non-visible area for shielding conductive lines and displaying various illustrations. The printed result of the decorative layer directly affects the appearance of the touch panel.
第1A及1B圖分別顯示現有技術中一種觸控面板的上視圖及剖面圖。如第1A及1B圖所示,觸控面板10具一基板100,一感應層(圖未示),感應層可貼合或直接製作於基板100之異於觸控操作的平面,基板100包含非可視區100a以及可視區100b。其中非可視區100a通常採用裝飾層用以遮蔽觸控面板 上的線路。通常非可視區100a印刷單一道裝飾層110於基板100上而形成。然而,當單一裝飾層110的印刷面積較大時,容易於印刷區域的邊緣,也就是可視區100b以及非可視區100a的交界處,產生溢墨120,出現鋸齒現象,邊緣不平整。此外,大面積印刷更容易產生擦拭網版勞動強度增加、擦拭網版頻率增加以及印刷效率降低等問題。 1A and 1B are respectively a top view and a cross-sectional view showing a touch panel in the prior art. As shown in FIGS. 1A and 1B, the touch panel 10 has a substrate 100, a sensing layer (not shown), and the sensing layer can be bonded or directly formed on a plane different from the touch operation of the substrate 100. The substrate 100 includes Non-visible area 100a and visible area 100b. The non-visible area 100a usually adopts a decorative layer for shielding the touch panel. On the line. Typically, the non-visible area 100a is formed by printing a single decorative layer 110 on the substrate 100. However, when the printing area of the single decorative layer 110 is large, it is easy to produce the ink overflow 120 at the edge of the printing area, that is, the boundary between the visible area 100b and the non-visible area 100a, the sawing phenomenon occurs, and the edges are uneven. In addition, large-area printing is more prone to problems such as increased labor intensity of wiping screens, increased frequency of wiping screens, and reduced printing efficiency.
為解決以上問題,本發明提供一觸控面板,具有一可視區及一環繞該可視區的非可視區,包括:一基板;一第一裝飾層,設置於該基板上;以及一第二裝飾層,設置於該基板上並與該第一裝飾層共同定義出至少一鏤空區域的範圍,其中該第二裝飾層相對該第一裝飾層靠近該鏤空區域的邊緣。 In order to solve the above problems, the present invention provides a touch panel having a visible area and a non-visible area surrounding the visible area, including: a substrate; a first decorative layer disposed on the substrate; and a second decoration And a layer disposed on the substrate and defining a range of at least one hollow region together with the first decorative layer, wherein the second decorative layer is adjacent to an edge of the hollow region relative to the first decorative layer.
在一實施例中,該第二裝飾層與該第一裝飾層至少部分重疊並形成一重疊區域及一非重疊區域其中。 In an embodiment, the second decorative layer at least partially overlaps the first decorative layer and forms an overlapping area and a non-overlapping area therein.
在一實施例中,該第一裝飾層與該第二裝飾層相鄰,該第一裝飾層的寬度為100μm至2900μm。 In an embodiment, the first decorative layer is adjacent to the second decorative layer, and the first decorative layer has a width of 100 μm to 2900 μm.
在一實施例中,該第一裝飾層在該重疊區域是位於該第二裝飾層之上。 In an embodiment, the first decorative layer is located above the second decorative layer in the overlapping area.
在一實施例中,該第二裝飾層位於該第一裝飾層之上來形成重疊。 In an embodiment, the second decorative layer is positioned over the first decorative layer to form an overlap.
在一實施例中,該重疊區域的寬度為50μm至500μm,該非重疊區域的寬度為100μm至1000μm。 In an embodiment, the overlap region has a width of 50 μm to 500 μm, and the non-overlapping region has a width of 100 μm to 1000 μm.
在一實施例中,該第二裝飾層的寬度小於第一裝飾層的寬度。 In an embodiment, the width of the second decorative layer is less than the width of the first decorative layer.
在一實施例中,該第一裝飾層及該第二裝飾層採用不同顏色的油墨。 In an embodiment, the first decorative layer and the second decorative layer are inks of different colors.
在一實施例中,該第一裝飾層及該第二裝飾層採用相同顏色的油墨。 In an embodiment, the first decorative layer and the second decorative layer are inks of the same color.
在一實施例中,該非重疊區域的寬度為100μm至300μm。 In an embodiment, the non-overlapping regions have a width of from 100 μm to 300 μm.
在一實施例中,該第一裝飾層及/或該第二裝飾層系由複數道油墨層印刷而成 In an embodiment, the first decorative layer and/or the second decorative layer are printed by a plurality of ink layers.
本發明亦提供一種用於觸控面板的印刷方法,包括:提供一基板;形成一第一裝飾層於該基板上;以及形成一第二裝飾層於該基板上,並與該第一裝飾層共同定義出至少一鏤空區域的範圍,其中該第二裝飾層相對該第一裝飾層靠近該鏤空區域的邊緣,第二裝飾層的寬度小於第一裝飾層的寬度;其中該第一裝飾層與該第二裝飾層相鄰。 The invention also provides a printing method for a touch panel, comprising: providing a substrate; forming a first decorative layer on the substrate; and forming a second decorative layer on the substrate, and the first decorative layer Defining a range of at least one hollow region, wherein the second decorative layer is adjacent to an edge of the hollow region relative to the first decorative layer, and a width of the second decorative layer is smaller than a width of the first decorative layer; wherein the first decorative layer is The second decorative layer is adjacent.
本發明亦提供另一種用於觸控面板的印刷方法包括:提供一基板;形成一第二裝飾層於該基板之上,並與該第一裝飾層共同定義出至少一鏤空區域的範圍,其中該第二裝飾層相對該第一裝飾層靠近該鏤空區域的邊緣,第二裝飾層的寬度小於第一裝飾層的寬度;其中該第二裝飾層與該第一裝飾層部分地重疊並形成一重疊區域及一非重疊區域,該非重疊邊緣區的寬度為100μm至2900μm。 The present invention also provides another printing method for a touch panel, comprising: providing a substrate; forming a second decorative layer on the substrate, and defining a range of at least one hollow region together with the first decorative layer, wherein The second decorative layer is adjacent to the edge of the hollow region relative to the first decorative layer, and the width of the second decorative layer is smaller than the width of the first decorative layer; wherein the second decorative layer partially overlaps with the first decorative layer and forms a The overlap region and a non-overlapping region have a width of 100 μm to 2900 μm.
本發明其將整體的印刷區域分次且分成多區的小面積印刷。小面積的印刷所需油墨量較少,大幅地減少可視區及鏤空圖案邊緣溢墨或積墨的現象,並且可降低擦拭網版的勞 動強度及頻率,進而提升印刷效率及品質。 The present invention divides the overall printed area into small areas and divides it into small areas for printing. Small area printing requires less ink, which greatly reduces the phenomenon of ink spillage or ink accumulation on the edges of the visible area and the hollow pattern, and can reduce the labor of wiping the screen. Dynamic strength and frequency, which in turn improves printing efficiency and quality.
10‧‧‧觸控面板 10‧‧‧Touch panel
30‧‧‧觸控面板 30‧‧‧Touch panel
100‧‧‧保護蓋板 100‧‧‧ protective cover
100a‧‧‧非可視區 100a‧‧‧Invisible area
100b‧‧‧可視區 100b‧‧‧visible area
120‧‧‧溢墨 120‧‧ ‧ overflow ink
201‧‧‧圖案 201‧‧‧ pattern
300‧‧‧基板 300‧‧‧Substrate
300a‧‧‧非可視區 300a‧‧‧Invisible area
300b‧‧‧可視區 300b‧‧‧visible area
301‧‧‧操作面 301‧‧‧Operation surface
303‧‧‧貼合面 303‧‧‧Fitting surface
310‧‧‧第一裝飾層 310‧‧‧First decorative layer
310a‧‧‧油墨層 310a‧‧‧ ink layer
320‧‧‧第二裝飾層 320‧‧‧Second decorative layer
O‧‧‧重疊區域 O‧‧‧Overlapping area
P‧‧‧非重疊區域 P‧‧‧ non-overlapping areas
第1A及1B圖顯示一種現有技術中觸控面板的上視圖及剖面示意圖;第2圖顯示本發明一些實施例中,觸控面板的上視圖;第3A及3B圖顯示本發明一些實施例中,觸控面板於製造過程中的剖面示意圖;第3C圖顯示根據本發明一實施例中,用於觸控面板的印刷方法的流程圖;第4A圖顯示本發明一實施例中,觸控面板於製造過程中的剖面示意圖;第4B圖顯示根據本發明一實施例中,用於觸控面板的印刷方法的流程圖;第5圖顯示本發明一實施例中,觸控面板於製造過程中的剖面示意圖;第6圖顯示根據本發明一實施例中,觸控面板的裝飾層的剖面放大示意圖。 1A and 1B are a top view and a cross-sectional view of a touch panel in the prior art; FIG. 2 is a top view of the touch panel in some embodiments of the present invention; and FIGS. 3A and 3B show some embodiments of the present invention. FIG. 3C is a flow chart showing a printing method for a touch panel according to an embodiment of the present invention; FIG. 4A is a view showing a touch panel according to an embodiment of the present invention; FIG. 4B is a flow chart showing a printing method for a touch panel according to an embodiment of the invention; FIG. 5 is a view showing a touch panel in a manufacturing process according to an embodiment of the invention. FIG. 6 is a schematic cross-sectional view showing a decorative layer of a touch panel according to an embodiment of the invention.
以下將配合所附圖式詳述本發明的實施例,應注意的是,以下圖示並未按照比例繪製,事實上,可能任意的放大或縮小元件的尺寸以便清楚表現出本發明的特徵,而在說明書及圖式中,同樣或類似的元件將以類似的符號表示。在方法 進行之前、當中或之後可能具有額外的操作步驟,且所述的一些操作步驟可能在另一些實施例的方法中被取代或刪除。 The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, in which the following drawings are not drawn to scale. In fact, the dimensions of the elements may be arbitrarily enlarged or reduced to clearly show the features of the present invention. In the description and drawings, the same or similar elements will be denoted by like reference numerals. In the method There may be additional operational steps before, during or after the process, and some of the operational steps may be replaced or deleted in the methods of other embodiments.
請參考第2圖,觸控面板30分為可視區300b和環繞可視區300b的非可視區300a,可視區300b主要用於顯現影像畫面和觸控操作,而非可視區300a則是多用於可見的導電線路(圖未示)的排布以及各種圖示201的排列,在非可視區300a上通常設置有裝飾層,用於定義出可視區300b及非可視區300a各自的區域範圍,並且達到遮擋導電線路的效果。此外,裝飾層更可進一步圖案化來定義形成有前述的各種圖案201如商標圖形203、紅外線(IR)孔(圖未示)及圖示(icon)等鏤空區域。本發明的實施例中,非可視區300a在靠近可視區300b及各種圖案201如商標圖形、紅外線(IR)孔(圖未示)及圖示(icon)的邊緣處系利用分區印刷油墨的方式來進行裝飾層的套印。 Referring to FIG. 2, the touch panel 30 is divided into a visible area 300b and a non-visible area 300a surrounding the visible area 300b. The visible area 300b is mainly used for displaying image images and touch operations, while the non-visible area 300a is mostly used for visible. The arrangement of the conductive lines (not shown) and the arrangement of the various diagrams 201 are generally provided with a decorative layer on the non-visible area 300a for defining the respective area ranges of the visible area 300b and the non-visible area 300a, and The effect of shielding the conductive lines. In addition, the decorative layer may be further patterned to define a hollowed out region in which various patterns 201, such as a logo pattern 203, an infrared (IR) hole (not shown), and an icon (icon), are formed. In the embodiment of the present invention, the non-visible area 300a is used to print ink by partitioning at the edge of the visible area 300b and various patterns 201 such as trademark graphics, infrared (IR) holes (not shown) and icons (icon). To carry out the overprinting of the decorative layer.
具體的套印方式請參考第3A和3B圖,第3A和3B圖為觸控面板30的剖面示意圖及上視圖。觸控面板30包括:基板300、第一裝飾層310及第二裝飾層320。第一裝飾層310及第二裝飾層320設置於基板300上,並且共同定義出至少一鏤空區域的範圍,其中第二裝飾層320相對第一裝飾層310靠近所述鏤空區域的邊緣。此外,所謂的鏤空區域可以是觸控面板30的可視區300b及/或在觸控面板30的非可視區300a中所形成的圖案201標如商標圖形、紅外線(IR)孔(圖未示)及圖示(icon)等,在圖3A及圖3B中,僅以可視區300b來作為鏤空區域的舉例說明。 For details of the overprinting method, please refer to FIGS. 3A and 3B. FIGS. 3A and 3B are a cross-sectional view and a top view of the touch panel 30. The touch panel 30 includes a substrate 300, a first decorative layer 310, and a second decorative layer 320. The first decorative layer 310 and the second decorative layer 320 are disposed on the substrate 300 and collectively define a range of at least one hollow region, wherein the second decorative layer 320 is adjacent to the edge of the hollow region with respect to the first decorative layer 310. In addition, the so-called hollow area may be the visible area 300b of the touch panel 30 and/or the pattern 201 formed in the non-visible area 300a of the touch panel 30 is marked with a trademark graphic, an infrared (IR) hole (not shown). As shown in FIG. 3A and FIG. 3B, only the visible area 300b is used as an example of the hollow area.
第一裝飾層310及第二裝飾層320的材料可選自油 墨或光阻。此外,為了讓相對較靠近鏤空區域的第二裝飾層320具有較小面積的印刷,本實施例的第二裝飾層320的寬度較佳是設計小於第一裝飾層310的寬度。當然,第一裝飾層310及第二裝飾層320的寬度可根據觸控面板30的非可視區300a的範圍及/或圖案201的實際大小進行調整。若以第3A圖中,第一裝飾層310及第二裝飾層320用來共同定義可視區300b和非可視區300a的範圍來看,第一裝飾層310的寬度可例如為100μm至2900μm,而第二裝飾層320的寬度可例如為150μm至1500μm,更優選擇寬度為150μm至500μm。 The material of the first decorative layer 310 and the second decorative layer 320 may be selected from oil Ink or photoresist. In addition, in order to make the second decorative layer 320 relatively close to the hollow region have a smaller area of printing, the width of the second decorative layer 320 of the present embodiment is preferably smaller than the width of the first decorative layer 310. Certainly, the widths of the first decorative layer 310 and the second decorative layer 320 may be adjusted according to the range of the non-visible area 300a of the touch panel 30 and/or the actual size of the pattern 201. If the first decorative layer 310 and the second decorative layer 320 are used to define the range of the visible area 300b and the non-visible area 300a in FIG. 3A, the width of the first decorative layer 310 may be, for example, 100 μm to 2900 μm. The width of the second decorative layer 320 may be, for example, 150 μm to 1500 μm, and more preferably 150 μm to 500 μm.
更具體來講,本實施例因制程考慮,第二裝飾層320部分地重疊於第一裝飾層310,以形成重疊區域O及非重疊區域P。在重疊區域O中,第二裝飾層320位於該第一裝飾層310之上,在一實施例中,重疊區域O的寬度為50μm至500μm。非重疊區域P的寬度設計是為了要因應前述小面積的印刷,在一實施例中,非重疊區域P的寬度為100μm至1000μm,更優選擇寬度為100μm至300μm。藉此,本實施例讓習知單一較大面積的裝飾層分成第一裝飾層310及第二裝飾層320等至少兩區域來進行小面積的印刷,可以有效避免容易造成溢墨以及鋸齒邊緣的現象。 More specifically, in the present embodiment, the second decorative layer 320 partially overlaps the first decorative layer 310 to form the overlapping region O and the non-overlapping region P due to process considerations. In the overlap region O, the second decorative layer 320 is located above the first decorative layer 310. In one embodiment, the overlap region O has a width of 50 μm to 500 μm. The width of the non-overlapping region P is designed to cope with the aforementioned small-area printing. In one embodiment, the non-overlapping region P has a width of 100 μm to 1000 μm, and more preferably has a width of 100 μm to 300 μm. Therefore, the present embodiment allows a conventional single large-area decorative layer to be divided into at least two regions, such as the first decorative layer 310 and the second decorative layer 320, for small-area printing, which can effectively avoid ink spills and jagged edges. phenomenon.
補充說明的是,為了清楚表示第一裝飾層310及第二裝飾層320的相對位置,本發明的圖示中使用不同圖層樣式來表示第一裝飾層310及第二裝飾層320,但其並非用以限定第一裝飾層310與第二裝飾層320的材料或顏色需相同或相異。 It is to be noted that, in order to clearly show the relative positions of the first decorative layer 310 and the second decorative layer 320, different layer patterns are used in the illustration of the present invention to represent the first decorative layer 310 and the second decorative layer 320, but it is not The materials or colors used to define the first decorative layer 310 and the second decorative layer 320 need to be the same or different.
基板300可作為觸控面板30的保護蓋板(cover lens)。基板300的材料可選自玻璃、強化玻璃、藍寶石、聚對苯二甲酸乙二醇酯(PET)、聚酯薄膜(PC),本發明不以此為限。再者,如基板300的材料為玻璃,基板300的形成可包含強化制程以提供更堅硬的保護作用。在一實施例中,強化制程可為化學離子交換制程。 The substrate 300 can serve as a protective cover for the touch panel 30 (cover Lens). The material of the substrate 300 may be selected from the group consisting of glass, tempered glass, sapphire, polyethylene terephthalate (PET), and polyester film (PC), and the invention is not limited thereto. Furthermore, if the material of the substrate 300 is glass, the formation of the substrate 300 may include a strengthening process to provide a harder protection. In one embodiment, the strengthening process can be a chemical ion exchange process.
承上述,基板300具有一向外裸露的操作面301及一後續將與板材(圖未示,例如可為具有觸控感應層的觸控基板或為一顯示面板的上偏光片)貼合的貼合面303。操作面301在觸控裝置完成組裝後會裸露在裝置的外部,而貼合面303上可套印第一裝飾層310及第二裝飾層320。 In the above, the substrate 300 has an outwardly exposed operation surface 301 and a sticker that will be attached to the board (not shown, for example, a touch substrate having a touch sensing layer or an upper polarizer for a display panel). Face 303. The operation surface 301 is exposed to the outside of the device after the touch device is assembled, and the first decorative layer 310 and the second decorative layer 320 are overprinted on the bonding surface 303.
接下來,請一併參考第3C圖來說明觸控面板30的具體制程,所述第一裝飾層310及第二裝飾層320可運用網版印刷的方法製作。首先,在基板300上用網目較大的網版印刷上第一裝飾層310;其次,預烤第一裝飾層310,使其固化;再次,用網目較小的網版在已經印製完第一裝飾層310的基板300上印刷第二裝飾層320,使第二裝飾層320部分地重疊於第一裝飾層310,以形成重疊區域O及非重疊區域P,其中第二裝飾層320與第一裝飾層310依據網版設計而共同定義出至少一鏤空區域(如可視區300b)的範圍,並且第二裝飾層320相對第一裝飾層310靠近鏤空區域的邊緣;最後,預烤第二裝飾層320,使其固化。 Next, please refer to FIG. 3C to illustrate a specific process of the touch panel 30. The first decorative layer 310 and the second decorative layer 320 can be fabricated by a screen printing method. First, the first decorative layer 310 is printed on the substrate 300 with a larger mesh screen; secondly, the first decorative layer 310 is pre-baked to be cured; again, the screen with a smaller mesh is already printed. A second decorative layer 320 is printed on the substrate 300 of a decorative layer 310, and the second decorative layer 320 is partially overlapped with the first decorative layer 310 to form an overlapping area O and a non-overlapping area P, wherein the second decorative layer 320 and the second A decorative layer 310 defines a range of at least one hollow region (such as the visible region 300b) according to the screen design, and the second decorative layer 320 is adjacent to the edge of the hollow region with respect to the first decorative layer 310; finally, the second decoration is pre-baked. Layer 320 is allowed to cure.
在本實施例中,第二裝飾層320的材料可與第一裝飾層310相同。特別地,第一裝飾層310及第二裝飾層320可採用相同顏色的油墨。由於第二裝飾層320採用網目較小的網 版,可降低擦拭網版的頻率約20%至30%,以及可提升印刷效率約20%。且在印刷過程中,大大降低油墨的溢出量,使得第二裝飾層320的邊緣比第一裝飾層310的邊緣更加平整。此外,由於第一裝飾層310及第二裝飾層320採用顏色相同的油墨,第二裝飾層320可進一步針對第一裝飾層310的邊緣進行彌補,並提供更加平整的邊緣,從而使可視區300b及圖案201等鏤空區域的邊緣更加平整,改善觸控面板30的外觀。 In the present embodiment, the material of the second decorative layer 320 may be the same as the first decorative layer 310. In particular, the first decorative layer 310 and the second decorative layer 320 may use ink of the same color. Since the second decorative layer 320 adopts a mesh with a smaller mesh The version can reduce the frequency of wiping the screen by about 20% to 30%, and can improve the printing efficiency by about 20%. Moreover, during the printing process, the amount of ink overflow is greatly reduced, so that the edge of the second decorative layer 320 is flatter than the edge of the first decorative layer 310. In addition, since the first decorative layer 310 and the second decorative layer 320 are inks of the same color, the second decorative layer 320 may further compensate for the edges of the first decorative layer 310 and provide a flatter edge, thereby making the visible region 300b The edge of the cutout region such as the pattern 201 is flatter, and the appearance of the touch panel 30 is improved.
請參考第4A圖,第4A圖為本發明另一實施例。本實施例的觸控面板30大致與第2A圖所示的實施例相同,差異點在於,第二裝飾層320與第一裝飾層310部分地重疊以形成重疊區域O,該重疊區域O中,第一裝飾層310位於第二裝飾層320之上。 Please refer to FIG. 4A, which is another embodiment of the present invention. The touch panel 30 of the present embodiment is substantially the same as the embodiment shown in FIG. 2A, except that the second decorative layer 320 partially overlaps with the first decorative layer 310 to form an overlapping area O, in the overlapping area O, The first decorative layer 310 is located above the second decorative layer 320.
請一併參考第4B圖來說明觸控面板30的具體製程。首先,在基板300上用網目較小的網版印刷上第二裝飾層320;其次,預烤第二裝飾層320,使其固化;再者,用網目較大的網版在已經印製完第二裝飾層320的基板300上印刷第一裝飾層310,使第二裝飾層320與第一裝飾層310部份重疊以形成重疊區域O,並讓第二裝飾層320沒被第一裝飾層310覆蓋重疊的區域形成非重疊區域P。其中第二裝飾層320與第一裝飾層310依據網版設計而共同定義出至少一鏤空區域(如可視區300b)的範圍,並且第二裝飾層320相對第一裝飾層310靠近鏤空區域的邊緣。最後,預烤第一裝飾層310,使其固化。 Please refer to FIG. 4B to illustrate the specific process of the touch panel 30. First, the second decorative layer 320 is printed on the substrate 300 by a screen with a smaller mesh; secondly, the second decorative layer 320 is pre-baked to be cured; and further, the screen with a larger mesh is already printed. The first decorative layer 310 is printed on the substrate 300 of the second decorative layer 320, the second decorative layer 320 is partially overlapped with the first decorative layer 310 to form an overlapping area O, and the second decorative layer 320 is not covered by the first decorative layer. 310 covers the overlapping regions to form a non-overlapping region P. The second decorative layer 320 and the first decorative layer 310 jointly define a range of at least one hollow region (such as the visible region 300b) according to the screen design, and the second decorative layer 320 is adjacent to the edge of the hollow region with respect to the first decorative layer 310. . Finally, the first decorative layer 310 is pre-baked and allowed to cure.
在本實施例中,第二裝飾層320的材料可與第一裝飾層310相同。第一裝飾層310及第二裝飾層320可採用相同顏 色的油墨,由於第二裝飾層320採用網目較小的網版,大大降低油墨的溢出量,使得第二裝飾層320的邊緣比第一裝飾層310的邊緣更加平整。因此,當第一裝飾層310及第二裝飾層320採用顏色相同的油墨,第二裝飾層320可將第一裝飾層310的邊緣遮擋住,顯示出平整的邊緣,從而使可視區300b及圖案201等鏤空區域的邊緣更加平整,改善觸控面板30的外觀。特別地,第一裝飾層310及第二裝飾層320可採用不同顏色的油墨,由於第二裝飾層320採用網目較小的網版,在印刷過程中,大大降低油墨的溢出量,使得第二裝飾層320的兩個邊緣均比第一裝飾層310的邊緣更加平整,此外,由於第二裝飾層320與第一裝飾層310部分地重疊,因此可遮蔽面積較大的第一裝飾層310的邊緣,以達到修飾效果,不僅使可視區300b及圖案201等鏤空區域的邊緣更加平整,還能使觸控面板30具有多色邊框的效果,改善觸控面板30的外觀。 In the present embodiment, the material of the second decorative layer 320 may be the same as the first decorative layer 310. The first decorative layer 310 and the second decorative layer 320 can adopt the same color The color ink, because the second decorative layer 320 adopts a screen with a smaller mesh size, greatly reduces the amount of ink overflow, so that the edge of the second decorative layer 320 is more flat than the edge of the first decorative layer 310. Therefore, when the first decorative layer 310 and the second decorative layer 320 are inks of the same color, the second decorative layer 320 can block the edge of the first decorative layer 310 to display a flat edge, thereby making the visible area 300b and the pattern The edge of the hollowed out area such as 201 is flatter, and the appearance of the touch panel 30 is improved. In particular, the first decorative layer 310 and the second decorative layer 320 may use inks of different colors. Since the second decorative layer 320 adopts a screen with a smaller mesh, the amount of ink overflow is greatly reduced during the printing process, so that the second Both edges of the decorative layer 320 are flatter than the edges of the first decorative layer 310. Further, since the second decorative layer 320 partially overlaps the first decorative layer 310, the first decorative layer 310 having a larger area can be shielded. The edge is used to achieve a finishing effect, which not only makes the edge of the cutout area such as the visible area 300b and the pattern 201 smoother, but also enables the touch panel 30 to have a multi-color border effect and improves the appearance of the touch panel 30.
請參考第5圖,第5圖為本發明另一實施例,本實施例與上述實施例大致相同,差異點在於,本實施例的第一裝飾層310與第二裝飾層320相鄰設置而沒有形成重疊。對此,如果在制程中第二裝飾層320印刷失敗,浪費的油墨量小,返工容易。 Referring to FIG. 5, FIG. 5 is another embodiment of the present invention. The present embodiment is substantially the same as the above embodiment. The difference is that the first decorative layer 310 and the second decorative layer 320 of the present embodiment are disposed adjacent to each other. There is no overlap. In this regard, if the printing of the second decorative layer 320 fails during the process, the amount of wasted ink is small and rework is easy.
請參考第6圖,其為第一裝飾層310及第二裝飾層320的剖面放大示意圖。在一實施例中,第一裝飾層310系由複數道(兩道以上)油墨層310a印刷而成。例如,第一裝飾層310以系由三道油墨層310a所形成。藉由多次印刷而形成的第一裝飾層310在邊緣部分具有階梯狀的結構。在另一實施例中,第 二裝飾層320亦可由複數道油墨層印刷而成。如此,能保證所述第一裝飾層310和第二裝飾層320達到良好的遮光性。 Please refer to FIG. 6 , which is an enlarged cross-sectional view of the first decorative layer 310 and the second decorative layer 320 . In one embodiment, the first decorative layer 310 is printed from a plurality of (two or more) ink layers 310a. For example, the first decorative layer 310 is formed by three ink layers 310a. The first decorative layer 310 formed by multiple printing has a stepped structure at the edge portion. In another embodiment, the first The second decorative layer 320 can also be printed from a plurality of ink layers. In this way, the first decorative layer 310 and the second decorative layer 320 can be ensured to achieve good light shielding properties.
應注意的是,本揭露的觸控面板,亦可包含其它結構,例如,感測電極層、觸控感應層或觸控信號導線等。而上述結構可選用任意習知的方法或材料進行製作。 It should be noted that the touch panel of the present disclosure may also include other structures, such as a sensing electrode layer, a touch sensing layer, or a touch signal wire. The above structure can be produced by any conventional method or material.
綜上所述,本發明提供的用於觸控面板的印刷結構及其方法,其利用迭構套印將大面積的印刷區域分次且分區印刷。使靠近鏤空區域的邊緣的印刷為小面積印刷。小面積的印刷所需油墨量較少,大幅地減少溢墨的現象,因此可降低擦拭網版的勞動強度及頻率,進而提升印刷效率及品質。 In summary, the present invention provides a printing structure for a touch panel and a method thereof, which utilizes lamination overprinting to divide a large-area printing area in sections and print in sections. The printing near the edge of the hollowed out area is printed in a small area. The small amount of printing requires less ink, which greatly reduces the phenomenon of ink spillage, thereby reducing the labor intensity and frequency of wiping the screen, thereby improving printing efficiency and quality.
雖然本發明已以數個較佳實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明的精神和範圍內,當可作任意的更動與潤飾,因此本發明的保護範圍當視後附的權利要求所界定者為准。 While the invention has been described above in terms of several preferred embodiments, it is not intended to limit the scope of the present invention, and any one of ordinary skill in the art can make any changes without departing from the spirit and scope of the invention. And the scope of the present invention is defined by the appended claims.
300‧‧‧基板 300‧‧‧Substrate
300a‧‧‧非可視區 300a‧‧‧Invisible area
300b‧‧‧可視區 300b‧‧‧visible area
301‧‧‧操作面 301‧‧‧Operation surface
303‧‧‧貼合面 303‧‧‧Fitting surface
310‧‧‧第一裝飾層 310‧‧‧First decorative layer
320‧‧‧第二裝飾層 320‧‧‧Second decorative layer
O‧‧‧重疊區域 O‧‧‧Overlapping area
P‧‧‧邊緣區 P‧‧‧Edge Area
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TWI590123B true TWI590123B (en) | 2017-07-01 |
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