WO2013170684A1 - 触控面板及其应用的触控显示设备 - Google Patents

触控面板及其应用的触控显示设备 Download PDF

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Publication number
WO2013170684A1
WO2013170684A1 PCT/CN2013/074362 CN2013074362W WO2013170684A1 WO 2013170684 A1 WO2013170684 A1 WO 2013170684A1 CN 2013074362 W CN2013074362 W CN 2013074362W WO 2013170684 A1 WO2013170684 A1 WO 2013170684A1
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WO
WIPO (PCT)
Prior art keywords
touch panel
light shielding
shielding layer
sensing electrode
conductive paste
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Application number
PCT/CN2013/074362
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English (en)
French (fr)
Inventor
何宽鑫
黄萍萍
杨俊评
Original Assignee
宸鸿科技(厦门)有限公司
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Application filed by 宸鸿科技(厦门)有限公司 filed Critical 宸鸿科技(厦门)有限公司
Priority to KR1020147034223A priority Critical patent/KR101609971B1/ko
Publication of WO2013170684A1 publication Critical patent/WO2013170684A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Definitions

  • the present invention relates to a touch technology, and more particularly to a touch panel and a touch display device thereof.
  • FIG 1 shows a partial plan view of a conventional touch panel comprising a sensing electrode layer 10 and a light shielding layer 20.
  • the sensing electrode layer 10 is formed on the substrate and includes a plurality of sensing electrodes 10X and 10Y
  • the light shielding layer 20 is further formed on the sensing electrode layer 10, and covers the most peripheral portion of the sensing electrodes 10X and 10Y.
  • the light shielding layer 20 The area formed by itself is the non-visible area of the touch panel, and the area surrounded by the light shielding layer 20 is the visible area of the touch panel.
  • the formed sensing electrode layer 10 is not completely aligned with the edge of the substrate, and each sensing electrode 10X Between 10Y and 10Y are independent and insulated from each other, so the light shielding layer 20 covers both the sensing electrodes 10X and 10Y and the sensing electrodes 10X and 10Y. Area.
  • the non-visible area formed by the light shielding layer 20 causes a color difference problem, which affects the appearance of the touch device.
  • the design of the lead-out terminal of the sensing electrode formed on the touch panel is improved to reduce the area of the non-visible area formed by the sensing electrode in the light shielding layer, thereby effectively avoiding contact
  • the non-visible area of the control panel has a problem of chromatic aberration due to the sensing electrodes.
  • a touch panel includes: a sensing electrode layer formed on a reinforced upper cover substrate, and including a plurality of sensing electrodes, wherein at least one end of each sensing electrode extends outward There is a comb terminal, the comb terminal includes at least one branch; a light shielding layer is formed over the sensing electrode layer and at least partially overlaps the comb terminal.
  • the touch panel further includes a conductive paste filled in the uniform perforation of the light shielding layer corresponding to the position of the comb terminal.
  • the conductive paste is further formed above or below the light shielding layer.
  • the coated area of the conductive paste is larger than the cross-sectional area of the through hole.
  • the coated area of the conductive paste is 20-200% of the area of a body portion of the sensing electrode.
  • the coating shape of the conductive paste includes a diamond shape or a rectangular shape.
  • the touch panel further includes a wire layer disposed above the light shielding layer and electrically contacting the conductive paste.
  • the wire layer further includes a conductive pad, and the wire layer electrically contacts the conductive paste through the conductive pad.
  • the area of the conductive pad is larger than the cross-sectional area of the through hole.
  • the area of the conductive pad is 20-200% of the area of a body portion of the sensing electrode.
  • the color of the conductive paste is the same as the color of the light shielding layer.
  • the light shielding layer and the comb terminal are separated from the extension of the sensing electrode by a distance.
  • a touch display device includes: a display module and a touch panel, wherein the touch panel includes: a reinforced upper cover substrate disposed above the display module; and a sensing electrode layer disposed on the The inner surface of the upper cover substrate is reinforced and includes a plurality of sensing electrodes, wherein at least one end of each of the sensing electrodes extends outwardly with a comb terminal, the comb terminal includes at least one branch; and the light shielding layer is disposed on the sensing electrode Below the layer, and at least partially overlaps the comb terminal.
  • the touch panel further comprises a conductive paste filled in the uniform perforation of the light shielding layer corresponding to the position of the comb terminal.
  • the conductive paste is further coated on the upper or lower side of the light shielding layer.
  • the coated area of the conductive paste is larger than the cross-sectional area of the through hole.
  • the touch panel further includes a wire layer disposed above the light shielding layer and electrically contacting the conductive paste.
  • the wire layer further includes a conductive pad, and the wire layer electrically contacts the conductive paste through the conductive pad.
  • the area of the conductive pad is larger than the cross-sectional area of the through hole.
  • the light shielding layer and the comb terminal are separated from the extension of the sensing electrode by a distance.
  • the invention can be solved without changing the process or adding materials.
  • the non-visible area produces a problem of chromatic aberration, which effectively reduces production costs.
  • FIG. 1 shows a partial plan view of a conventional touch panel.
  • FIG. 2 is a partial plan view showing a touch panel according to an embodiment of the invention.
  • FIG. 3 is a partial cross-sectional view of the touch panel taken along section line A-B of FIG. 2, in accordance with an embodiment of the present invention.
  • FIG. 4 is a partial plan view showing a touch panel according to an embodiment of the invention.
  • FIG. 5 is a partial cross-sectional view showing the touch panel taken along section line A-B of FIG. 4, in accordance with an embodiment of the present invention.
  • Figure 6 shows a section line A-B along Figure 4 in accordance with another embodiment of the present invention. A partial cross-sectional view of the touch panel is illustrated.
  • FIG. 7 is a partial plan view showing a touch panel according to an embodiment of the invention.
  • FIG. 8 is a partial plan view showing a touch panel according to an embodiment of the invention.
  • FIG. 9 is a partial cross-sectional view showing a touch display device according to an embodiment of the invention.
  • the sensing electrode layer and the light shielding layer are disposed on the reinforced upper cover substrate, and on the reinforced upper cover substrate, a sensing electrode layer is formed first, and then a layer structure of the light shielding layer is formed.
  • the sensing electrode layer 100 includes a plurality of sensing electrodes, wherein the sensing electrodes of each column are composed of a plurality of body portions (diamonds) 100X And a plurality of connecting portions are connected in series, and the sensing electrodes of each row are formed by a plurality of main body portions (diamonds) 100Y and a plurality of jumper wires 102 connected in series, and the jumper wires 102
  • the material is, for example, a metal material, and an insulating portion (not shown) is disposed between the connection portion of each column of sensing electrodes and the jumper 102 of each row of sensing electrodes.
  • the insulating portion electrically isolates a portion where each column of sensing electrodes and each row of sensing electrodes overlap each other.
  • the material of the sensing electrode layer 100 is a transparent conductive material such as indium tin oxide (ITO).
  • ITO indium tin oxide
  • the pattern of the sensing electrode layer 100 can be formed using a deposition process and a lithography and etching process. In other embodiments, the body portions 100X and 100Y of the sensing electrodes The pattern can be other shapes such as: rectangle.
  • each column of sensing electrodes and each row of sensing electrodes extends outwardly with a comb terminal 100B, and the comb terminal 100B It is made of the same material as the sensing electrode layer 100, for example, made of ITO.
  • each column sensing electrode and the outermost peripheral body portion 100A of each row of sensing electrodes is a triangle
  • the comb terminal 100B may be any number of comb teeth including at least one branch 101, that is, the comb terminal 100B.
  • the comb terminal 100B of this embodiment is exemplified by three branches 101, these branches 101 is disposed perpendicular to one side of the outermost main body portion 100A.
  • the shape of the body portion 100A at the outermost periphery of the sensing electrode may be other shapes, and the branch of the comb terminal 100B
  • the 101 may also be of other shapes, and the branch 101 of the comb terminal 100B may be disposed on one side of the outermost body portion 100A with a non-perpendicular angle.
  • the light shielding layer 120 is formed over the sensing electrode layer 100 and at least partially overlaps the comb terminal 100B, and the light shielding layer 120
  • the position corresponding to the comb terminal 100B includes a through hole 122.
  • the material of the light shielding layer 120 is, for example, a black photoresist or a black printing ink.
  • the conductive paste 124 is filled in the through hole 122 To electrically contact the comb terminal 100B. It is worth mentioning that the light shielding layer 120 and the comb terminal 100B of the present embodiment extend from the sensing electrode (that is, the outer side of the outermost main body portion 100A). It is disposed apart from a distance d, in other words, the light shielding layer 120 is separated from the outer side of the outermost body portion 100A without contact.
  • the region where the sensing electrode layer 100 overlaps with the light shielding layer 120 occurs only at the comb terminal 100B.
  • the comb terminal 100B is of a branch structure, in other words, the overall size area of each of the comb terminals 100B is relatively smaller than the main portion of each of the sensing electrodes of the sensing electrode layer 100.
  • the size area of the 100A can reduce the area of the non-visible area formed by the sensing electrode layer 100 in the light shielding layer 120, thereby effectively avoiding the non-visible area of the touch panel due to the sensing electrode layer 100. And the problem of chromatic aberration.
  • the width of each branch 101 of the comb terminal 100B can be, for example, 10 micrometers ( ⁇ m)
  • the actual width is not limited thereto, as long as electrical signal transmission can be performed and chromatic aberration can be avoided in the region of the light shielding layer 120, that is, the comb terminal 100B is not perceived in the region of the light shielding layer 120.
  • the existence of the design is within the scope of the present invention. Therefore, the touch panel of the embodiment of the present invention avoids the visibility problem of the sensing electrode pattern of the conventional touch panel in the area of the light shielding layer.
  • the wire layer 130 is disposed above the light shielding layer 120, and electrically contacts the conductive adhesive 124, and the comb terminal 100B passes through the conductive adhesive 124 is electrically connected to the wire layer 130, and the wire layer 130 serves as a signal transmission line, so that the electrical signal generated by the sensing electrode layer 100 passes through the wire layer 130. It is transmitted to an external detection circuit, and the external detection circuit determines the position of the touch.
  • the light shielding layer 120 of the present embodiment is spaced apart from the outermost body portion 100A of the sensing electrode by a distance d Provided, therefore, even if the lithography and etching process of forming the wiring layer 130 produces a conductive residue at the boundary of the light shielding layer 120, such as metal or ITO Residue, this conductive residue also does not cause a short circuit between the different sensing electrodes.
  • the distance d designed in this embodiment may be zero, and the light shielding layer is provided. 120 is attached to the body portion 100A at the outermost periphery of the sensing electrode.
  • FIG. 3 there is shown a section line A-B along Figure 2, in accordance with an embodiment of the present invention.
  • a partial cross-sectional view of the touch panel is illustrated, wherein the touch panel is presented in a configuration in which the upper cover substrate 140 is reinforced.
  • the touch panel of the embodiment of the present invention is provided on the reinforced upper cover substrate 140 for all the touch components.
  • the sensing electrode layer 100 is formed on the reinforced upper cover substrate 140 as a protective cover, and the partial sensing electrode layer 100 shown in FIG.
  • the main body portion 100A and the comb terminal 100B including the outermost periphery of the sensing electrode are included.
  • the light shielding layer 120 is disposed at a distance d from the main portion 100A of the outermost periphery of the sensing electrode, and the light shielding layer 120 Covering a portion of the comb terminal 100B, the light shielding layer 120 has a through hole 122 corresponding to the position of the comb terminal 100B, exposing a portion of the comb terminal 100B, and the conductive adhesive 124
  • the through hole 122 is filled to electrically contact the comb terminal 100B, so that the wire layer 130 is electrically connected to the comb terminal 100B by the conductive paste 124.
  • FIG. 4 a partial plan view of a touch panel according to another embodiment of the present invention is shown.
  • Figure 4 and Figure 2 differ in conductive adhesive
  • the coating area of 124 is increased.
  • the coating area of the conductive paste 124 of FIG. 4 is larger than the cross-sectional area of the through hole 122, which is about 20-200 of the area of the main portion 100A of the outermost portion of the sensing electrode. %.
  • the increased coating area of the conductive paste 124 can compensate for the missing sensing area of the comb terminal 100B, and contribute to sensing the sensing sensitivity of the electrode layer.
  • the conductive paste 124 The coating shape is a rectangle. In other embodiments, the coating shape of the conductive paste 124 may be other shapes such as a diamond shape.
  • FIG. 5 there is shown a section line A-B along Figure 4, in accordance with an embodiment of the present invention.
  • a partial cross-sectional view of the touch panel is illustrated, wherein the touch panel is presented in a configuration in which the upper cover substrate 140 is reinforced.
  • the sensing electrode layer 100 is formed on the reinforced upper cover substrate as a protective cover 140 on.
  • the local sensing electrode layer 100 includes a body portion 100A and a comb terminal 100B at the outermost periphery of the sensing electrode.
  • the light shielding layer 120 and the body portion of the outermost periphery of the sensing electrode 100A The distance d is covered over a portion of the comb terminal 100B, and the light shielding layer 120 has a through hole 122 corresponding to the position of the comb terminal 100B to expose the comb terminal 100B. Part of it.
  • the conductive paste 124 is filled in the through hole 122 from above and further formed over the light shielding layer 120 for electrically contacting the comb terminal 100B.
  • Conductor layer 130 by conductive adhesive 124 is electrically connected to the comb terminal 100B.
  • FIG. 6 there is shown a cross-sectional line A-B along Figure 4 in accordance with another embodiment of the present invention.
  • a partial cross-sectional view of the touch panel is illustrated.
  • This embodiment is substantially the same as the embodiment of the embodiment of FIG. 5, the difference being that the conductive paste 124 is a portion of the comb terminal 100B that is first covered.
  • the comb-shaped terminal 100B is electrically connected to the upper portion, and then the light-shielding layer 120 is formed, so that the conductive paste 124 is formed under the light-shielding layer 120, and the conductive paste 124 Further, a through hole 122 corresponding to the position of the comb terminal 100B is filled in the light shielding layer 120 from top to bottom.
  • Conductor layer 130 by conductive paste 124 and comb terminal 100B Produce an electrical connection.
  • FIG. 7 a partial plan view of a touch panel according to another embodiment of the present invention is shown.
  • Figure 7 differs from Figure 2 in the wire layer 130 further includes a conductive pad 130P covering the comb terminal 100B, the conductive paste 124 and the light shielding layer 120, and the wire layer 130 passing through the conductive pad
  • the 130P is electrically contacted with the conductive paste 124, and the conductive paste 124 is only filled in the through hole 122.
  • the area of the conductive pad 130P is larger than the through hole 122
  • the cross-sectional area is about 20-200% of the area of the main portion 100A of the outermost portion of the sensing electrode.
  • Conductive pad 130P can compensate comb terminal 100B The lack of sensing area helps to improve the sensing sensitivity of the sensing electrode layer.
  • FIG. 8 a partial plan view of a touch panel according to another embodiment of the present invention is shown.
  • Figure 8 and Figure 7 differ in conductive adhesive
  • the coated area of 124 is larger than the cross-sectional area of the through hole 122 but smaller than the area of the conductive pad 130P.
  • the conductive paste 124 may be disposed above or below the light shielding layer 120 and filled in the through holes. 122 in.
  • the color of the conductive paste 124 and the light shielding layer 120 are the same, so that the color of the non-visible area of the touch panel can be the same.
  • the design may also adopt different colors according to the specifications of the actual touch panel, which is not limited by this embodiment.
  • the touch panel of various embodiments of the present invention does not need to change the process or add materials, for example, to eliminate the inorganic refractive index matching of the etched lines (inorganic index) Matching)
  • the material layer or other material layer can improve the non-visible area of the touch panel by reducing the design of the lead-out terminal of the sensing electrode and reducing the area of the non-visible area formed by the sensing electrode in the light-shielding layer.
  • the problem of chromatic aberration is caused by sensing the electrodes, and thus various embodiments of the present invention can effectively reduce the production cost of the touch panel.
  • the light shielding layer 120 and the body portion 100A that is the outermost periphery of the sensing electrode The distance is set at a distance, so that even if a conductive residue is generated at the boundary of the light shielding layer 120, the short circuit problem between the sensing electrodes is not caused.
  • a partial cross-sectional view of a touch display device 400 is shown in accordance with an embodiment of the present invention.
  • Touch display device 400 The display module 300 and the touch panel 200 are disposed on the display module 300, wherein the display module 300 It can be a liquid crystal display or other kind of display.
  • the touch panel 200 is exemplified by the touch panel shown in the embodiment of FIG. 2, and includes a reinforced upper cover substrate 140 disposed on the display module.
  • the sensing electrode layer 100 is disposed on the inner side surface of the reinforced upper cover substrate 140, and the sensing electrode layer 100
  • the method includes a plurality of sensing electrodes, wherein at least one end of each of the sensing electrodes extends outwardly with a comb terminal.
  • the light shielding layer 120 is disposed under the sensing electrode layer 100 and at least partially overlaps the comb terminal, the light shielding layer The position corresponding to the comb terminal has a through hole 122, and the conductive paste 124 is filled in the through hole 122 to electrically contact the comb terminal.
  • the wire layer 130 is disposed on the light shielding layer 120
  • the conductive adhesive 124 is electrically connected below and electrically connected to the wire layer 130 via the conductive adhesive 124.
  • a protective layer 150 is formed over the inner side surface of the reinforced upper cover substrate 140. And/or other shielding layer (not shown) to comprehensively cover the touch component, and the protective layer 150 and/or the shielding layer adjacent to the display module 300 to form the touch display device 400 .
  • the touch panel 200 used The design of the touch panel of different structures disclosed in the foregoing embodiments may be further used.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Position Input By Displaying (AREA)

Abstract

本发明的实施例提供一种触控面板，其包含感测电极层形成于强化上盖基板上，感测电极层包含复数条感测电极，其中每一条感测电极的至少一端向外延伸有一梳状端子，并且梳状端子包含至少一分支。遮光层形成于感测电极层上方，并且至少部分重迭于梳状端子。此外，本发明的实施例更提供触控面板所应用的触控显示设备。

Description

触控面板及其应用的触控显示设备 技术领域
本发明有关于一种触控技术，特别有关于一种触控面板及其应用的触控显示设备。
背景技术
近年来，触控面板已经被大量应用在各种电子产品中，例如手机、个人数字助理 (PDA) 或掌上型个人计算机等。图 1 显示一种习知的触控面板的局部平面示意图，触控面板包含感测电极层 10 及遮光层 20 。其中，感测电极层 10 形成于基板上，并且包含复数个感测电极 10X 和 10Y ，遮光层 20 进一步形成于感测电极层 10 上，并且覆盖最外围的部分感测电极 10X 和 10Y 。藉此，遮光层 20 本身形成的区域为触控面板的非可视区，而遮光层 20 所围设出的区域则为触控面板的可视区。
然而，在上述触控面板的架构中，由于所形成的感测电极层 10 并非完全靠齐于基板的边缘，并且各感测电极 10X 和 10Y 之间是独立且相互绝缘，因此遮光层 20 会同时涵盖在有感测电极 10X 和 10Y 的区域与没有感测电极 10X 和 10Y 的区域。如此一来，当自基板形成有感测电极层 10 之面的相对面观看时，遮光层 20 所形成的非可视区会有色差问题产生，影响触控装置的外观。
发明内容
依据本发明的实施例，藉由在触控面板上所形成的感测电极的引出端子的设计改良，以减少感测电极在遮光层所形成的非可视区的面积，进而有效地避免触控面板的非可视区因感测电极而产生色差的问题。
依据本发明的一实施例，提供一种触控面板，包括：感测电极层，形成于强化上盖基板上，并且包含复数条感测电极，其中每一条感测电极的至少一端向外延伸有一梳状端子，梳状端子包含至少一分支；遮光层，形成于感测电极层上方并且至少部分重迭于梳状端子。
进一步的， 所述触控面板进一步包含一导电胶，填充于该遮光层对应于该梳状端子 的 位置的一贯穿孔。
进一步的， 该导电胶进一步形成于该遮光层的上方或下方。
进一步的， 该导电胶的涂布面积大于该贯穿孔的截面积。
进一步的， 该导电胶的涂布面积为该感测电极的一主体部分的面积 的 20-200 ％。
进一步的， 该导电胶的涂布形状包括菱形或矩形。
进一步的， 所述触控面板更包括一导线层，设置在该遮光层上方并且电性接触该导电胶。
进一步的， 该导线层更包括一导电垫，该导线层透过该导电垫来电性接触该导电胶。
进一步的， 该导电垫的面积大于该贯穿孔的截面积。
进一步的， 该导电垫的面积为该感测电极的一主体部分的面积 的 20-200 ％。
进一步的， 该导电胶的颜色与该遮光层的颜色相同。
进一步的， 该遮光层与该梳状端子自该感测电极的延伸处之间相隔一距离。
依据本发明的另一实施例，提供一种触控显示设备，包括：显示模块以及触控面板，其中触控面板包括：强化上盖基板，设置于显示模块上方；感测电极层，设置于强化上盖基板的内侧表面上，并且包含复数条感测电极，其中每一条感测电极的至少一端向外延伸有一梳状端子，梳状端子包含至少一分支；遮光层，设置于感测电极层下方，并且至少部分重迭于梳状端子。
进一步的， 该触控面板进一步包含一导电胶，填充于该遮光层对应于该梳状端子 的 位置的一贯穿孔。
进一步的， 该导电胶进一步涂布于该遮光层的上方或下方。
进一步的， 该导电胶的涂布面积大于该贯穿孔的截面积。
进一步的， 该触控面板更包括一导线层，设置在该遮光层上方并且电性接触该导电胶。
进一步的， 该导线层更包括一导电垫，该导线层透过该导电垫来电性接触该导电胶。
进一步的， 该导电垫的面积大于该贯穿孔的截面积。
进一步的， 该遮光层与该梳状端子自该感测电极的延伸处之间相隔一距离。
藉此，在感测电极层及遮光层形成于同一基板的触控面板，并且是先形成感测电极层再形成遮光层的层次架构下，本发明不需改变制程或增加材料，即可解决非可视区产生色差的问题，有效降低生产成本。
附图说明
图 1 显示习知的触控面板的局部平面示意图。
图 2 显示依据本发明的一实施例所绘示的触控面板的局部平面示意图。
图 3 显示依据本发明的一实施例，沿着图 2 的剖面线 A-B 所绘示的触控面板的局部剖面示意图。
图 4 显示依据本发明的一实施例所绘示的触控面板的局部平面示意图。
图 5 显示依据本发明的一实施例，沿着图 4 的剖面线 A-B 所绘示的触控面板的局部剖面示意图。
图 6 显示依据本发明的另一实施例，沿着图 4 的剖面线 A-B 所绘示的触控面板的局部剖面示意图。
图 7 显示依据本发明的一实施例所绘示的触控面板的局部平面示意图。
图 8 显示依据本发明的一实施例所绘示的触控面板的局部平面示意图。
图 9 显示依据本发明的一实施例所绘示的触控显示设备的局部剖面示意图。
具体实施方式
本发明的实施例的触控面板将感测电极层及遮光层设置在强化上盖基板上，并且在强化上盖基板上是先形成感测电极层，再形成遮光层的层次架构。
参阅图 2 ，其显示依据本发明的一实施例，触控面板的局部平面示意图，触控面板包含感测电极层 100 形成于强化上盖基板 ( 未绘出 ) 上，感测电极层 100 包含复数条感测电极，其中每一列的感测电极是由复数个主体部分 ( 菱形部 )100X 以及复数个连接部串接而成，而每一行的感测电极是由复数个主体部分 ( 菱形部 )100Y 以及复数个跨接线 102 串接而成，跨接线 102 的材料例如为金属材料，在每一列感测电极的连接部与每一行感测电极的跨接线 102 之间还设置有绝缘部 ( 未绘出 ) ，藉由绝缘部可电性隔绝每一列感测电极与每一行感测电极相互交迭的部分。感测电极层 100 的材料为透明导电材料，例如为铟锡氧化物 (ITO) ，可利用沈积制程以及微影与蚀刻制程形成感测电极层 100 的图案。在其他实施例中，感测电极的主体部分 100X 和 100Y 的图案可以是其他形状，如：矩形。
在此实施例中，每一列感测电极和每一行感测电极的至少一端向外延伸有一梳状端子 100B ，梳状端子 100B 与感测电极层 100 的材料相同，例如由 ITO 制成。
在此实施例中，每一列感测电极和每一行感测电极最外围的主体部分 100A 的形状是三角形，而梳状端子 100B 则可以是包含至少一分支 101 ，也就是梳状端子 100B 的梳齿数量不限，此实施例的梳状端子 100B 是以三支分支 101 来举例说明，这些分支 101 与最外围的主体部分 100A 的一边垂直设置。在其他实施例中，感测电极最外围的主体部分 100A 的形状可以是其他形状，而梳状端子 100B 的分支 101 也可以是其他形状，并且梳状端子 100B 的分支 101 更可以采用非垂直角度来设置于最外围的主体部分 100A 的一边。
遮光层 120 形成于感测电极层 100 上方，并且至少部分重迭于梳状端子 100B ，遮光层 120 对应于梳状端子 100B 的位置包含贯穿孔 122 。其中，遮光层 120 的材料例如为黑色光阻或黑色印刷油墨。导电胶 124 填充于贯穿孔 122 ，以电性接触梳状端子 100B 。值得一提的是，本实施例的遮光层 120 与梳状端子 100B 自感测电极的延伸处 ( 亦即最外围的主体部分 100A 的外侧 ) 相隔一距离 d 而设置，换句话说，遮光层 120 与最外围的主体部分 100A 的外侧之间是分开而没有接触的情形。
依据本发明的实施例，感测电极层 100 与遮光层 120 重迭的区域只有发生在梳状端子 100B 上，由于梳状端子 100B 是采用分支结构的设计，换句话说，每一梳状端子 100B 的整体尺寸面积是相对小于感测电极层 100 的每一感测电极的主体部分 100A 的尺寸面积，如此可以减少感测电极层 100 在遮光层 120 所形成的非可视区的面积，进而有效地避免触控面板的非可视区因感测电极层 100 而产生色差的问题。在设计上，梳状端子 100B 的每一分支 101 的宽度可例如是 10 微米 ( μ m) ，但实际宽度并不以此为限，只要能够进行电信号传递并且可避免在遮光层 120 的区域内产生色差，亦即在遮光层 120 的区域内不会察觉到梳状端子 100B 的存在的设计，皆是本发明所涵盖的范围。因此，本发明的实施例的触控面板避免了习知触控面板的感测电极图案在遮光层的区域内的可视 (visible) 问题。
导线层 130 设置在遮光层 120 上方，并且电性接触导电胶 124 ，梳状端子 100B 经由导电胶 124 与导线层 130 电性连接，导线层 130 作为信号传送线，使得感测电极层 100 产生的电性信号经由导线层 130 传递至外部检测电路，进而由外部检测电路判断触控的位置。由于本实施例的遮光层 120 与感测电极最外围的主体部分 100A 相隔一距离 d 设置，因此即使形成导线层 130 的微影与蚀刻制程在遮光层 120 的边界处产生导电残留物，例如为金属或 ITO 残留物，此导电残留物也不会导致不同感测电极之间发生短路。当然，若本发明的其他实施例无需考虑边界残留物的问题的话，则本实施例所设计的距离 d 可以为零，让遮光层 120 贴齐于感测电极最外围的主体部分 100A 。
参阅图 3 ，其显示依据本发明的一实施例，沿着图 2 的剖面线 A-B 所绘示的触控面板的局部剖面示意图，其中触控面板以强化上盖基板 140 在下方的配置方式呈现。本发明的实施例的触控面板为全部触控组件设置于强化上盖基板 140 上的触控结构 (touch on lens) ，感测电极层 100 形成在作为保护外盖的强化上盖基板 140 上，图 3 所示的局部的感测电极层 100 包含感测电极最外围的主体部分 100A 及梳状端子 100B 。遮光层 120 与感测电极最外围的主体部分 100A 相隔距离 d 设置，遮光层 120 覆盖在部分的梳状端子 100B 上，遮光层 120 具有贯穿孔 122 对应于梳状端子 100B 的位置，暴露出梳状端子 100B 的一部份，导电胶 124 填充于贯穿孔 122 ，以电性接触梳状端子 100B ，使得导线层 130 藉由导电胶 124 与梳状端子 100B 产生电性连接。
参阅图 4 ，其显示依据本发明的另一实施例，触控面板的局部平面示意图。图 4 与图 2 的差异在于导电胶 124 的涂布面积加大，图 4 的导电胶 124 的涂布面积大于贯穿孔 122 的截面积，约为感测电极最外围的主体部分 100A 的面积的 20-200 ％。导电胶 124 的涂布面积加大可以补偿梳状端子 100B 缺少的感应面积，有助于感测电极层的感测灵敏度。在此实施例中，导电胶 124 的涂布形状是矩形，在其他实施例中，导电胶 124 的涂布形状可以是其他形状，如：菱形。
参阅图 5 ，其显示依据本发明的一实施例，沿着图 4 的剖面线 A-B 所绘示的触控面板的局部剖面示意图，其中触控面板以强化上盖基板 140 在下方的配置方式呈现。在此实施例中，感测电极层 100 形成在作为保护外盖的强化上盖基板 140 上。局部的感测电极层 100 包含感测电极最外围的主体部分 100A 及梳状端子 100B 。遮光层 120 与感测电极最外围的主体部分 100A 相隔距离 d ，覆盖在部分的梳状端子 100B 上，并且遮光层 120 具有对应于梳状端子 100B 位置的贯穿孔 122 ，以暴露出梳状端子 100B 的一部份。导电胶 124 由上而下填充于贯穿孔 122 并进一步形成于遮光层 120 上方，以用来电性接触梳状端子 100B 。导线层 130 藉由导电胶 124 与梳状端子 100B 产生电性连接。
参阅图 6 ，其显示依据本发明的另一实施例，沿着图 4 的剖面线 A-B 所绘示的触控面板的局部剖面示意图。本实施例与图 5 的实施例的架构大致相同，差异点在于，导电胶 124 是先覆盖在部分的梳状端子 100B 上来电性连接梳状端子 100B ，之后再形成遮光层 120 ，使得导电胶 124 是形成于遮光层 120 下方，并且导电胶 124 再进一步由上而下填充于遮光层 120 中对应于梳状端子 100B 位置的贯穿孔 122 。导线层 130 藉由导电胶 124 与梳状端子 100B 产生电性连接。
参阅图 7 ，其显示依据本发明的另一实施例，触控面板的局部平面示意图。图 7 与图 2 的差异在于导线层 130 还包含导电垫 (conductive pad)130P 覆盖在梳状端子 100B 、导电胶 124 及遮光层 120 上方，导线层 130 透过导电垫 130P 电性接触导电胶 124 ，导电胶 124 只有填充于贯穿孔 122 内。导电垫 130P 的面积大于贯穿孔 122 的截面积，约为感测电极最外围的主体部分 100A 的面积的 20-200 ％。导电垫 130P 可以补偿梳状端子 100B 缺少的感应面积，有助于提高感测电极层的感测灵敏度。
参阅图 8 ，其显示依据本发明的另一实施例，触控面板的局部平面示意图。图 8 与图 7 的差异在于导电胶 124 的涂布面积大于贯穿孔 122 的截面积但小于导电垫 130P 的面积。在此实施例中，导电胶 124 可设置在遮光层 120 上方或下方并填充于贯穿孔 122 中。
在本发明的各种实施例中，导电胶 124 的颜色与遮光层 120 的颜色相同，使得触控面板的非可视区的颜色可以一致。当然，在设计上亦可依实际触控面板的规格需求而采用不同的颜色，在此并非为本实施例所限制。
相较于习知的触控面板，本发明的各种实施例的触控面板不需改变制程或增加材料，例如用来消除蚀刻线的无机折射率匹配 (inorganic index matching) 材料层或其他材料层，藉由感测电极的引出端子的设计改良，减少感测电极在遮光层所形成的非可视区的面积，即可有效地避免触控面板的非可视区因感测电极而产生色差的问题，因此本发明的各种实施例可有效降低触控面板的生产成本。
此外，依据本发明的各种实施例，遮光层 120 与感测电极最外围的主体部分 100A 相隔一段距离设置，因此即使在遮光层 120 的边界处产生导电残留物，也不会引起感测电极之间的短路问题。
参阅图 9 ，其显示依据本发明的一实施例，触控显示设备 400 的局部剖面示意图。触控显示设备 400 包含显示模块 300 以及触控面板 200 ，触控面板 200 设置在显示模块 300 上，其中显示模块 300 可以是液晶显示器或其他种类的显示器。本实施例中，触控面板 200 是以上述图 2 的实施例所示的触控面板来举例说明，其包含强化上盖基板 140 设置于显示模块 300 上方，感测电极层 100 设置于强化上盖基板 140 的内侧表面上，感测电极层 100 包含复数条感测电极，其中每一条感测电极的至少一端向外延伸有一梳状端子。遮光层 120 设置于感测电极层 100 下方，并且至少部分重迭于梳状端子，遮光层 120 对应于梳状端子的位置具有贯穿孔 122 ，导电胶 124 填充于贯穿孔 122 内，以电性接触梳状端子。导线层 130 设置在遮光层 120 下方并电性接触导电胶 124 ，梳状端子经由导电胶 124 与导线层 130 产生电性连接。此外，在强化上盖基板 140 的内侧表面上方还形成保护层 150 及 / 或其他屏蔽层 ( 图未绘出 ) ，以全面性地覆盖上述触控组件，保护层 150 及 / 或屏蔽层邻接于显示模块 300 ，形成触控显示设备 400 。
在其他触控显示设备的实施上，其所采用的触控面板 200 亦可进一步使用前述实施方式中所揭露的不同结构的触控面板的设计。
虽然本发明已揭露较佳实施例如上，然其并非用以限定本发明，在此技术领域中具有通常知识者当可了解，在不脱离本发明的精神和范围内，当可做些许更动与润饰。因此，本发明的保护范围当视 权利要求 所界定为准。

Claims (20)

  1. 一种触控面板，其特征在于，包括：
    一感测电极层，形成于一强化上盖基板上，并且包含复数条感测电极，其中每一该些感测电极的至少一端向外延伸有一梳状端子，该梳状端子包含至少一分支；以及
    一遮光层，形成于该感测电极层上方并且至少部分重迭于该梳状端子。
  2. 根据 权利要求 1 所述的触控面板，其特征在于，进一步包含一导电胶，填充于该遮光层对应于该梳状端子 的 位置的一贯穿孔。
  3. 根据 权利要求 2 所述的触控面板，其特征在于，该导电胶进一步形成于该遮光层的上方或下方。
  4. 根据 权利要求 3 所述的触控面板，其特征在于，该导电胶的涂布面积大于该贯穿孔的截面积。
  5. 根据 权利要求 3 所述的触控面板，其特征在于，该导电胶的涂布面积为该感测电极的一主体部分的面积 的 20-200 ％。
  6. 根据 权利要求 3 所述的触控面板，其特征在于，该导电胶的涂布形状包括菱形或矩形。
  7. 根据 权利要求 2 或 3 所述的触控面板，其特征在于，更包括一导线层，设置在该遮光层上方并且电性接触该导电胶。
  8. 根据 权利要求 7 所述的触控面板，其特征在于，该导线层更包括一导电垫，该导线层透过该导电垫来电性接触该导电胶。
  9. 根据 权利要求 8 所述的触控面板，其特征在于，该导电垫的面积大于该贯穿孔的截面积。
  10. 根据 权利要求 8 所述的触控面板，其特征在于，该导电垫的面积为该感测电极的一主体部分的面积 的 20-200 ％。
  11. 根据 权利要求 2 所述的触控面板，其特征在于，该导电胶的颜色与该遮光层的颜色相同。
  12. 根据 权利要求 1 所述的触控面板，其特征在于，该遮光层与该梳状端子自该感测电极的延伸处之间相隔一距离。
  13. 一种触控显示设备，其特征在于，包括：
    一显示模块；以及
    一触控面板，其中该触控面板包括：
    一强化上盖基板，设置于该显示模块上方；
    一感测电极层，设置于该强化上盖基板的一内侧表面上，并且包含复数条感测电极，其中每一该些感测电极的至少一端向外延伸有一梳状端子，该梳状端子包含至少一分支；以及
    一遮光层，设置于该感测电极层下方，并且至少部分重迭于该梳状端子。
  14. 根据 权利要求 13 所述的触控显示设备，其特征在于，该触控面板进一步包含一导电胶，填充于该遮光层对应于该梳状端子 的 位置的一贯穿孔。
  15. 根据 权利要求 14 所述的触控显示设备，其特征在于，该导电胶进一步涂布于该遮光层的上方或下方。
  16. 根据 权利要求 14 所述的触控显示设备，其特征在于，该导电胶的涂布面积大于该贯穿孔的截面积。
  17. 根据 权利要求 14 或 15 所述的触控显示设备，其特征在于，该触控面板更包括一导线层，设置在该遮光层上方并且电性接触该导电胶。
  18. 根据 权利要求 17 所述的触控显示设备，其特征在于，该导线层更包括一导电垫，该导线层透过该导电垫来电性接触该导电胶。
  19. 根据 权利要求 18 所述的触控显示设备，其特征在于，该导电垫的面积大于该贯穿孔的截面积。
  20. 根据 权利要求 13 所述的触控显示设备，其特征在于，该遮光层与该梳状端子自该感测电极的延伸处之间相隔一距离。
PCT/CN2013/074362 2012-05-16 2013-04-18 触控面板及其应用的触控显示设备 WO2013170684A1 (zh)

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CN105446511B (zh) * 2014-07-24 2019-03-05 宸鸿科技(厦门)有限公司 触控显示设备
CN105573539B (zh) * 2014-10-17 2019-05-03 宸鸿光电科技股份有限公司 触控面板及其制造方法
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CN105824446B (zh) * 2015-01-08 2019-05-10 群创光电股份有限公司 触控装置
CN106325618A (zh) * 2015-06-18 2017-01-11 宸鸿光电科技股份有限公司 触控面板
CN110300949B (zh) * 2017-02-15 2023-05-12 夏普株式会社 显示装置
KR102533131B1 (ko) * 2018-05-08 2023-05-18 삼성디스플레이 주식회사 입력 감지 유닛 및 이를 포함한 전자 장치
CN109634458B (zh) * 2018-12-04 2022-04-15 业成科技（成都）有限公司 触控面板及其制造方法
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