WO2014026578A1 - 触控面板 - Google Patents

触控面板 Download PDF

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Publication number
WO2014026578A1
WO2014026578A1 PCT/CN2013/081290 CN2013081290W WO2014026578A1 WO 2014026578 A1 WO2014026578 A1 WO 2014026578A1 CN 2013081290 W CN2013081290 W CN 2013081290W WO 2014026578 A1 WO2014026578 A1 WO 2014026578A1
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WO
WIPO (PCT)
Prior art keywords
touch panel
sensing structure
pattern
layer
present
Prior art date
Application number
PCT/CN2013/081290
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English (en)
French (fr)
Inventor
江耀诚
谢燕俊
官必鑫
黄丽妹
Original Assignee
宸鸿科技(厦门)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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
Publication of WO2014026578A1 publication Critical patent/WO2014026578A1/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
    • G06F3/044—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
    • 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
    • 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
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/86—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the casing, e.g. sealed casings or casings reducible in size
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0274—Optical details, e.g. printed circuits comprising integral optical means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0296—Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295

Definitions

  • the present invention relates to the field of touch technology, and in particular to a touch panel.
  • PDAs personal digital assistants
  • mobile phones mobile phones
  • Touch panels are widely used in portable electronic products such as Phone), notebooks and tablet PCs.
  • Panel As an interface tool for data communication, especially in the demand for tablet PCs with humanized design, touch panels have become one of the key components.
  • touch panels due to the current design of electronic products Thin, short, and small, so there is not enough space on the product to accommodate traditional input devices such as keyboards and mice.
  • a general touch panel includes a visible area for display and a non-visible area surrounding the visible area, wherein the non-visible area is provided with an opaque shielding layer, and in some products, A simple function button module is arranged in the visible area.
  • the corresponding button pattern is etched in the corresponding area of the shielding layer, and the corresponding button pattern area under the shielding layer is provided with the light emitting diode, when the light emitting diode is in working state
  • the button pattern is clearly visible, which is convenient for the user to use and enhance the appearance of the product.
  • the present invention provides a touch panel capable of solving the problem that the appearance of the product is affected by the small holes which are unevenly coated by the shielding layer and visible to the naked eye under strong light irradiation.
  • the invention provides a touch panel, comprising a protective cover having a lower surface, the lower surface comprising a visible area and a non-visible area surrounding the periphery of the visible area, a first sensing structure located at The lower surface covers the visible area, and a shielding layer is located in the non-visible area of the lower surface, and includes a strong light area and a non-glare area, wherein the first light pattern is provided in the strong light area And a non-transparent layer, located in the strong light region of the shielding layer, the second transparent pattern is disposed on the non-transparent layer, wherein the second pattern and the first pattern overlap each other.
  • the invention is provided with a non-transparent layer, whereby the non-transparent layer can effectively block the glare and avoid the visible holes of the shielding layer due to uneven coating. Appearance.
  • FIG. 1 is a top view showing the structure of a touch panel according to a first preferred embodiment of the present invention.
  • FIG. 2 is a partial schematic structural view of a touch panel according to a first preferred embodiment of the present invention.
  • FIG 3 is a cross-sectional view showing the structure of a touch panel according to a first preferred embodiment of the present invention.
  • FIG. 4 is a cross-sectional view showing the structure of a touch panel in accordance with a second preferred embodiment of the present invention.
  • FIG. 5 is a cross-sectional view showing the structure of a touch panel according to a third preferred embodiment of the present invention.
  • FIG. 6 is a cross-sectional view showing the structure of a touch panel in accordance with a fourth preferred embodiment of the present invention.
  • FIG. 7 is a cross-sectional view showing the structure of a touch panel according to a fifth preferred embodiment of the present invention.
  • FIG. 8 is a cross-sectional view showing the structure of a touch panel in accordance with a sixth preferred embodiment of the present invention.
  • FIG. 9 is a cross-sectional view showing the structure of a touch panel according to a seventh preferred embodiment of the present invention.
  • FIG. 10 is a cross-sectional view showing the structure of a touch panel according to an eighth preferred embodiment of the present invention.
  • FIG. 1 is a top view showing the structure of a touch panel according to a first preferred embodiment of the present invention.
  • the touch panel 10 of the present invention has a protective cover 12 , such as a tempered glass plate.
  • a protective area 16 is defined on the protective cover 12 and a non-circular surrounding the visible area 16 is defined.
  • the first sensing structure 19 is located on the lower surface of the protective cover 12 and covers the visible area 16.
  • the first sensing structure 19 includes a plurality of first axial electrodes 20 Along the first direction (X-axis in this embodiment) is arranged in parallel, and a plurality of second axial electrodes 30 are along a second direction (Y-axis in this embodiment)
  • the second axial electrode 30 includes a plurality of conductive units 32 and at least one connecting line 34 electrically connects the two adjacent conductive units 32.
  • the first axial electrode 20 and the second axial electrode 30 have an insulation at the interface. Layers 33 are present to prevent electrical interference with one another.
  • a plurality of conductive lines 40 are located in the non-visible area 18, and one end of each of the plurality of conductive lines 40 is electrically connected to the first axial electrode 20 and the second axial electrode 30, respectively, and the other end is external to a microprocessor (figure Connected to receive and analyze the signals received by the touch panel.
  • the shielding layer 22 is further included, for example, by an opaque material such as a black photoresist, and the shielding layer 22 is located on the lower surface of the protective cover 12.
  • the first pattern 24 is formed on the shielding layer 22 by etching.
  • the first pattern 24 is, for example, a button pattern of a button module of the touch panel in the non-visible area.
  • the first pattern 24 is a light-transmissive portion, and the first pattern 24 is a light-transmitting region.
  • a plurality of light-emitting sources are disposed under the first pattern 24 of the touch panel 10 (not shown).
  • a region corresponding to each of the light-emitting sources on the shielding layer 22 is defined as a strong light region 26, and a region on the shielding layer 22 not corresponding to the light-emitting source is defined as a non-glare region 28. That is to say, at least one light source is disposed under the strong light region 26 in the present invention, and the strong light emitted by the light source will pass through the first pattern 24 to present a bright key pattern.
  • the shielding layer has small holes due to uneven coating, and the small holes are difficult to be recognized by the naked eye under normal conditions, but when a part of the shielding layer located in the strong light area is irradiated by the strong light of the light source, it is strong. The light passes through the small holes, so that the user can see the small holes through the naked eye, which affects the appearance of the product.
  • the present invention further sets a non-transparent layer between the shielding layer and the underlying light source, which is non-transparent. The layer can effectively block the strong light from the lower light source from being irradiated to the holes to prevent the holes from being visible to the naked eye.
  • 2 is a partial structural view of a first preferred embodiment of the present invention, and FIG.
  • FIG. 3 is a cross-sectional structural view taken along line I-I' of FIG. 1 of the present invention.
  • the protective cover 12 of the present invention defines a lower surface 14 on which the first sensing structure 19 is formed in the visible region 16 and the shielding layer 22 is formed in a non-visible manner.
  • an illumination source 36 is further disposed at a position corresponding to the strong light region 26 below the shielding layer 22.
  • the non-transparent layer 38 may be formed of any opaque material, and the second pattern 25 is etched on the non-transparent layer 38, wherein the second pattern 25 is the same size and overlaps with the first pattern 24, or The second pattern 25 is slightly larger in area than the first pattern 24, so that the light emitted from the lower illumination source 36 sequentially passes through the second pattern 25 and the first pattern 24, and the illuminated button pattern can be presented on the user interface, and
  • the opaque layer 38 under the fine holes around the first pattern 24 in the glare region 26 blocks the glare, so that no glare is transmitted through the fine holes so that the holes are visible to the user.
  • the second sensing structure 29 when it is required to provide the touch function of the touch panel of the touch panel, at least one second sensing structure 29 is formed in the highlight region 26, and the second sensing structure 29 is disposed.
  • the button located in the non-visible area 18 has a touch function.
  • the second sensing structure 29 includes at least one first axial electrode 50 and at least one second axial electrode 60, wherein the second axial electrode 60 includes a plurality of conductive units 62 and at least one connection.
  • the wire 64 is electrically connected to the two adjacent conductive units 62, and then the plurality of conductive lines 70 are electrically connected to the first axial electrode 50 and the second axial electrode 60, respectively, and the detailed structure is similar to the first sensing structure. I will not repeat them here.
  • the second sensing structure 29 is disposed in the strong light region 26 and is located between the protective cover 12 and the shielding layer 22. Since the electrodes of the second sensing structure 29 are mainly composed of a transparent conductive material, the lower sensing layer 29 does not cover the lower portion.
  • the illuminating light of the light source 36 is generated, and in the present invention, the second sensing structure 29 is at the same level and electrically connected to the first sensing structure 19, so the second sensing structure 29 can be regarded as the first sensing structure 19
  • the second sensing structure 29 and the first sensing structure 19 are preferably fabricated in the same step in the manufacturing process to save manufacturing costs.
  • the present invention does not In this case, the second pattern can be omitted in the different steps according to the production requirements.
  • the first pattern 24 of the touch panel 10 in the non-visible area 18 is only used as a light pattern instead of a button, the second sensing can be omitted.
  • the steps of structure 29 is only used as a light pattern instead of a button.
  • the first axial electrode 20 and the second axial electrode 30 included in the first sensing structure 19 and the second sensing structure 29 are mainly composed of a transparent conductive material, for example, indium tin oxide (indium). Tin oxide, ITO), indium zinc oxide (IZO), cadmium tin oxide (cadmium tin oxide, CTO), aluminum zinc oxide (AZO), indium tin zinc oxide (ITZO), tin oxide (tin Oxide), zinc oxide, cadmium oxide, hafnium oxide (HfO), indium gallium zinc oxide (indium) Gallium zinc oxide, InGaZnO), indium gallium zinc magnesium oxide (indium gallium zinc magnesium oxide, InGaZnMgO), indium gallium magnesium oxide (InGaMgO), indium gallium aluminum (indium gallium) Aluminum oxide, InGaAlO), Carbon Nano Tube , CNT), silver carbon nanotubes or copper carbon nanotubes, or other transparent conductive materials and metal or non-metal
  • FIG. 4 is a cross-sectional view showing the structure of the second preferred embodiment of the present invention.
  • the second sensing structure 29 of the first preferred embodiment of the present invention is located between the protective cover 12 and the shielding layer 22, but the present invention The second sensing structure 29 is not limited thereto.
  • the second preferred embodiment of the present invention has a protective cover 12 as compared with the first preferred embodiment of the present invention.
  • the cover plate 12 defines a lower surface 14, and on the lower surface 14, a first sensing structure 19 is formed in the viewable area 16, forming a shielding layer 22 in the non-visible area 18, and the shielding layer 22 is etched with at least one a pattern 24, and a light source 36 is disposed at a position corresponding to the strong light region 26 below the shielding layer 22, and a non-transparent layer 38 is disposed between the shielding layer 22 and the light source 36.
  • the non-transparent layer 38 can be any The opaque material is formed, and the second pattern 25 is etched on the non-transparent layer 38.
  • the second pattern 25 is the same size and overlaps with the first pattern 24, or the second pattern 25 is slightly larger than the first pattern 24 .
  • the second sensing structure 29 in this embodiment is located between the shielding layer 22 and the non-transparent layer 38, and is located in the strong light region 26, and
  • the second sensing structure 29 can be an extension of the first sensing structure 19, so that the two are located at the same level and are electrically connected. Therefore, in this embodiment, the first sensing structure 19 and the second sensing structure 29 are formed after the shielding layer 22 located in the non-visible area 18 is completed, and the features, material characteristics, and manufacturing methods of the remaining components are as described above.
  • the first preferred embodiment is similar and will not be described again here.
  • the second sensing structure 29 of the present embodiment is different from the first preferred embodiment of the present invention.
  • the second sensing structure 29 can be an extension of the first sensing structure 19, so that the two are located under the non-transparent layer 38 corresponding to the strong light region 26 of the shielding layer 22.
  • the features, material characteristics, and manufacturing methods of the components are similar to those of the first preferred embodiment described above, and thus are not described herein again.
  • the touch panel 10 of the preferred embodiment of the present invention directly fabricates the first sensing structure 19 and the second sensing structure 29 on the protective cover 12 without providing an additional substrate to carry the first sensing structure 19 .
  • the second sensing structure 29 that is, the touch glass integration (Touch On lens, The structure of the TOL), but the present invention is not limited thereto, that is, the present invention may further provide a substrate carrying the first sensing structure 19 and the second sensing structure 29, and
  • FIG. 6 illustrates a fourth preferred embodiment of the present invention. Structural section view. As shown in FIG. 6 , a fourth preferred embodiment of the present invention has a substrate 42 and a protective cover 12 .
  • the protective cover 12 defines a visible area 16 and a non-visible area 18 .
  • a shielding layer 22 is formed for protection.
  • the cover plate 12 corresponds to the position of the non-visible area 18, at least one strong light area 26 is defined on the shielding layer 22, and at least one non-transparent layer 38 is formed in the strong light area 26 between the shielding layer 22 and the substrate 42.
  • the substrate further includes a substrate 42 under the non-transparent layer 38, and the first sensing structure 19 is formed on the substrate 42 instead of the protective cover.
  • the second sensing structure 29 in this embodiment is located between the protective cover 12 and the shielding layer 22 .
  • the second sensing structure 29 can be the first sensing structure 19 .
  • the extension is located, so the two are located at the same level and are electrically connected.
  • a glue layer 44 is further included between the first sensing structure 19 and the protective cover 12 to fit the protective cover 12 and the substrate 42 , and features, material characteristics and manufacturing methods of the remaining components are as described above.
  • the first preferred embodiment of the present invention is the same, and therefore will not be described again.
  • FIGS. 7-10 illustrate several different embodiments of the present invention, and various embodiments. The difference between each other mainly lies in the position of the substrate 42 and the second sensing structure 29.
  • FIG. 7 is a cross-sectional view showing the structure of the fifth preferred embodiment of the present invention. As shown in FIG. 7, the present embodiment is different from the fourth preferred embodiment of the present invention. Between the non-transparent layer 38. The features, material characteristics, and manufacturing methods of the remaining components are similar to those of the fourth preferred embodiment described above, and thus are not described herein again.
  • FIG. 8 is a cross-sectional view showing a structure of a sixth preferred embodiment of the present invention. As shown in FIG. 8, the present embodiment is different from the fourth preferred embodiment of the present invention in that the substrate 42 is located in a non-transparent layer in this embodiment. Below 38, and the second sensing structure 29 is located between the mask layer 22 and the non-transparent layer 38.
  • the features, material characteristics, and manufacturing methods of the remaining components are similar to those of the fourth preferred embodiment described above, and thus are not described herein again.
  • FIG. 9 is a cross-sectional view showing a structure of a seventh preferred embodiment of the present invention. As shown in FIG. 9, the present embodiment is different from the fourth preferred embodiment of the present invention in that the substrate 42 and the second sense in this embodiment are The sensing structures 29 are both located between the shielding layer 22 and the non-transparent layer 38. The features, material characteristics, and manufacturing methods of the remaining components are similar to those of the fourth preferred embodiment described above, and thus are not described herein again.
  • FIG. 10 is a cross-sectional view showing the structure of the eighth preferred embodiment of the present invention.
  • FIG. 10 is different from the fourth preferred embodiment of the present invention in that the substrate 42 and the second sensing structure 29 in this embodiment. They are all located below the non-transparent layer 38.
  • the features, material characteristics, and manufacturing methods of the remaining components are similar to those of the fourth preferred embodiment described above, and thus are not described herein again.
  • the connecting material 34 of the first touch structure 19 and the second touch structure 29 and the non-transparent layer 38 can be fabricated in the same process step by using the same material.
  • the material selected for use is an opaque conductive material. Even if the first touch structure 19 and the connection line 34 of the second touch structure 29, the non-transparent layer 38, and the conductive line 40 of the touch panel 10 are made of the same material, they are fabricated in the same process step.
  • the metal material having good conductivity and opacity is used, and the manufacturing steps are as follows.
  • a metal layer is formed in the non-visible area 18, and then the conductive line 40 and the first touch structure 19 are simultaneously formed by etching or the like.
  • a connecting line in the second touch structure 29, and a non-transparent layer 38 is formed around the first pattern 24, and the conductive line 40 is located in the shielding layer 22.
  • the glare is passed, so that the second pattern 25 is etched on the non-transparent layer 38, and the second pattern 25 and the first pattern 24 are etched. They overlap each other and do not resist the passage of strong light through the first pattern 24.
  • the non-transparent layer 38 is a conductive metal layer, when there is no other insulation level between the second touch structure 29 and the second touch structure 29, the non-transparent layer 38 will electrically connect the different axial conductive units of the second touch structure 29 to each other.
  • a third pattern (not shown) is etched on the non-transparent layer 38, and the gap between the conductive elements of the second sensing structure 29 is one.
  • the fourth pattern (not shown), and the third pattern and the fourth pattern overlap each other such that a portion of the conductive unit that needs to be insulated does not have a conductive substance that can be turned on.
  • the present invention provides a touch panel, wherein a non-transparent layer is disposed between the light source and the shielding layer, and can effectively block small holes generated by the uneven light due to uneven coating on the shielding layer. Therefore, the small holes are invisible to the naked eye, and the structure of the present invention can be integrated into the existing touch panel structure or the touch glass integration (Touch On lens) touch panel.

Abstract

本发明提供一种触控面板，包括有一保护盖板，其上有一下表面，该下表面包含一可视区及一围绕于该可视区周边的非可视区，一第一感测结构，位于该下表面，并覆盖该可视区，一遮蔽层，位于该下表面之该非可视区内，并包含一强光区及一非强光区，该强光区内设有一第一图案，以及一非透明层，位于该遮蔽层之该强光区内，该非透明层上设有一第二图案，其中该第二图案与该第一图案相互重叠。本发明提供一种触控面板，得以解决因遮蔽层涂布不均，在强光照射下，显现出细小孔洞从而影响产品外观的问题。

Description

触控面板 技术领域
本发明是有关于触控技术领域，且特别是有关于一种触控面板。
背景技术
在现今各式消费性电子产品的市场中，个人数位助理(PDA)、行动电话(mobile Phone)、笔记型电脑(notebook)及平板电脑(tablet PC)等可携式电子产品皆已广泛的使用触控面板(touch panel)作为其资料沟通的界面工具，尤其在讲求人性化设计的平板电脑需求的带动下，触控式面板已经一跃成为关键的零组件之一，此外，由于目前电子产品的设计皆以轻、薄、短、小为方向，因此在产品上无足够空间容纳如键盘、滑鼠等传统输入装置。
一般的触控面板包括一用于显示的可视区和一围绕与该可视区的非可视区，其中非可视区内设有一层不透光的遮蔽层，在一些产品中，非可视区内会设置简单的功能按键模组，为此，遮蔽层相应区域会蚀刻出相应的按键图案，遮蔽层下对应按键图案区域设置有发光二极体，当发光二极体处于工作状态时，强光照射于按键图案区域，使得按键图案清晰可见，方便用户使用并提升产品外观。然而由于印刷技术本身存在的一定瑕疵，在印刷或涂布遮蔽层时会存在涂布不均或者微小气泡的缺陷，使得遮蔽层上会存在一些细小的孔洞，而该些细小孔洞在一般强光下肉眼不可见，但当发光二极体所发出的强光照射到按键图案周边的遮蔽层时，强光将会透过该些孔洞，使得该些细微的孔洞可见，从而影响产品外观。
发明内容
有鉴于此，本发明提供一种触控面板，得以解决因遮蔽层涂布不均出现的细小孔洞，在强光照射下肉眼可见，从而影响产品外观的问题。
本发明提供一种触控面板，包括一保护盖板，具有一下表面，该下表面包含一可视区及一围绕于该可视区周边的非可视区，一第一感测结构，位于该下表面，并覆盖该可视区，一遮蔽层，位于该下表面之该非可视区内，并包含一强光区及一非强光区，该强光区内设有一第一图案，以及一非透明层，位于该遮蔽层之该强光区内，该非透明层上设有一第二图案，其中该第二图案与该第一图案相互重叠。
本发明在非可视区的强光区内，多设置了一层非透明层，藉由此非透明层，可有效阻挡强光，避免遮蔽层因涂布不均产生的细小孔洞可见，提升产品外观。
附图说明
图1绘示本发明第一较佳实施例的触控面板结构上视图。
图2绘示本发明第一较佳实施例的触控面板局部结构示意图。
图3绘示本发明第一较佳实施例的触控面板结构剖面示意图。
图4绘示本发明第二较佳实施例的触控面板结构剖面示意图。
图5绘示本发明第三较佳实施例的触控面板结构剖面示意图。
图6绘示本发明第四较佳实施例的触控面板结构剖面示意图。
图7绘示本发明第五较佳实施例的触控面板结构剖面示意图。
图8绘示本发明第六较佳实施例的触控面板结构剖面示意图。
图9绘示本发明第七较佳实施例的触控面板结构剖面示意图。
图10绘示本发明第八较佳实施例的触控面板结构剖面示意图。
具体实施方式
为使熟习本发明所属技术领域之一般技艺者能更进一步了解本发明，下文特列举本发明之较佳实施例，并配合所附图式，详细说明本发明的构成内容及所欲达成之功效。
为了方便说明，本发明之各图式仅为示意以更容易了解本发明，其详细的比例可依照设计的需求进行调整。在文中所描述对于图形中相对元件之上下关系，在本领域之人皆应能理解其系指物件之相对位置而言，因此皆可以翻转而呈现相同之构件，此皆应同属本说明书所揭露之范围，在此容先叙明。
图1绘示本发明第一较佳实施例的触控面板结构上视图。如图1所示，本发明的触控面板10具有一保护盖板12，例如为一强化玻璃板，于保护盖板12上定义有一可视区16及一围绕于可视区16周边的非可视区18，一第一感测结构19位于保护盖板12的一下表面，并覆盖可视区16，在本实施例中，第一感测结构19包括有复数条第一轴向电极20，沿着一第一方向 (本实施例中为X轴) 平行排列，以及复数条第二轴向电极30，沿着一第二方向 (本实施例中为Y轴) 平行排列，其中第二轴向电极30包括复数个导电单元32以及至少一连接线34电性连接两相邻之导电单元32，第一轴向电极20与第二轴向电极30交界处有一绝缘层33存在，防止彼此互相电性干扰。复数条导电线路40位于非可视区18内，各复数条导电线路40一端分别与第一轴向电极20以及第二轴向电极30电性连接，另一端与外部的一微处理器(图未示)相连，用以接收并分析触控面板所接收到的信号。
如第1～2图所示，在本实施例中，还包括遮蔽层22，例如由黑色光阻等不透光材质通过印刷涂布的方式形成，遮蔽层22位于保护盖板12的下表面上，并设于非可视区18内，第一图案24,系藉由蚀刻方式形成于遮蔽层22上，第一图案24例如为触控面板位于非可视区的按键模组的按键图案，由于第一图案24为遮蔽层22上镂空部份，因此第一图案24为透光区域，本发明中，在触控面板10的第一图案24下方设置有复数个发光源(图未示)，例如为发光二极体，且遮蔽层22上对应于各该发光源的区域定义为强光区26，相反地遮蔽层22上未对应到发光源的区域定义为非强光区28。也就是说，本发明中的强光区26下方设置有至少一发光源，且发光源所发出的强光将透过第一图案24呈现出发亮的按键图案。
习知技术中，遮蔽层因涂布不均匀而存在细小孔洞，该些细小孔洞在正常情况下肉眼难以辨识，但当位于强光区的部份遮蔽层受到发光源的强光照射时，强光会透过细小孔洞，导致用户可以通过肉眼看见该些细小孔洞，影响产品外观，为解决此问题，本发明在遮蔽层与下方的光源之间，更设置了一非透明层，此非透明层可有效阻挡来自下方光源的强光照射到该些孔洞，避免该些孔洞肉眼可见。图2绘示本发明第一较佳实施例的局部结构示意图，图3绘示本发明图1中沿剖面线I-I’所得的剖面结构示意图。如第2～3图所示，本发明的保护盖板12定义有一下表面14，在下表面14上，形成第一感测结构19于可视区16内，且形成遮蔽层22于非可视区18内，另外在遮蔽层22下方对应到强光区26的位置设置有一发光源36，此外，本实施例中，在强光区26内的发光源36以及遮蔽层22之间，更设置有一非透明层38，非透明层38可由任意不透光材质所形成，且非透明层38上蚀刻有一第二图案25，其中，第二图案25与第一图案24大小相同且相互重叠，或是第二图案25面积略大于第一图案24，使得位于下方的发光源36所发出光依序通过第二图案25与第一图案24后，可于使用者介面呈现发光的按键图案，且由于强光区26内位于第一图案24周围的细小孔洞下方有非透明层38挡住强光，因此不会产生强光透过细小孔洞而使用户可以看见该些孔洞。
如第2～3图所示，当需要提供触控面板的按键模组触控功能时，将会形成至少一第二感测结构29于强光区26内，设置第二感测结构29目的为提供触控面板10位于非可视区18的按键拥有触控功能。在本实施例中，第二感测结构29包含有至少一第一轴向电极50，以及至少一第二轴向电极60，其中第二轴向电极60包括复数个导电单元62以及至少一连接线64，电性连接两相邻之导电单元62，然后形成复数条导电线路70分别与第一轴向电极50以及第二轴向电极60电性连接，详细结构与第一感测结构相似，在此不再赘述。第二感测结构29设置在强光区26内，且系位于保护盖板12与遮蔽层22之间，由于第二感测结构29的电极主要由透明导电材质所构成，因此不会遮蔽下方发光源36的强光，且本发明中，第二感测结构29与第一感测结构19位于同一层级且电性连接，所以，第二感测结构29可视为第一感测结构19由可视区16延伸至强光区26的部位，因此在制作过程上，第二感测结构29与第一感测结构19较佳于同一步骤制作，以节省制作成本，当然本发明并不限于此，也可依照制作需求于不同步骤分别完成，此外，若是触控面板10位于非可视区18的第一图案24仅作为一发光图案而非一按键，也可省略制作第二感测结构29之步骤。
本发明中，第一感测结构19与第二感测结构29所包含的第一轴向电极20与第二轴向电极30主要由透明导电材料所组成,例如,氧化铟锡(indium tin oxide, ITO)、氧化铟锌(indium zinc oxide, IZO)、氧化镉锡(cadmium tin oxide, CTO)、氧化铝锌(aluminum zinc oxide, AZO)、氧化铟锌锡(indium tin zinc oxide, ITZO)、氧化锡(tin oxide)、氧化锌(zinc oxide)、氧化镉(cadmium oxide)、氧化铪(hafnium oxide, HfO)、氧化铟镓锌(indium gallium zinc oxide, InGaZnO)、氧化铟镓锌镁(indium gallium zinc magnesium oxide, InGaZnMgO)、氧化铟镓镁(indium gallium magnesium oxide, InGaMgO)、氧化铟镓铝(indium gallium aluminum oxide, InGaAlO)、奈米碳管(Carbon Nano Tube ,CNT)、银奈米碳管或铜奈米碳管等，,或是其他透明导电材质与金属或非金属的合成物，不过以上材料更可依实际需求而有所不同,在此并非为本发明所限制。
下文将针对本发明之半导体元件及其制作方法的不同实施态样进行说明，且为简化说明，以下说明主要针对各实施例不同之处进行详述，而不再对相同之处作重复赘述。此外，本发明之各实施例中相同之元件系以相同之标号进行标示，以利于各实施例间互相对照。
图4绘示本发明第二较佳实施例的结构剖面图，上述本发明第一较佳实施例之第二感测结构29系位于保护盖板12与遮蔽层22之间，然而本发明的第二感测结构29却不限于设置于此，如图2与图4所示，本发明第二较佳实施例与本发明第一较佳实施例相比，同样有一保护盖板12，保护盖板12定义有一下表面14，并且在下表面14上，形成第一感测结构19于可视区16内，形成遮蔽层22于非可视区18内，遮蔽层22上蚀刻有至少一第一图案24，且在另外在遮蔽层22下方对应到强光区26的位置设置有一发光源36，以及一非透明层38设置于遮蔽层22与发光源36之间，非透明层38可由任意不透光材质所形成，且非透明层38上蚀刻有一第二图案25，其中，第二图案25与第一图案24大小相同且相互重叠，或是第二图案25面积略大于第一图案24。与本发明第一较佳实施例不同之处在于，本实施例中的第二感测结构29系位于遮蔽层22与非透明层38之间，且位于强光区26内，且在一较佳实施方式中，第二感测结构29可为第一感测结构19的延伸部位，故两者位于同一层级，且电性连接。因此制作流程上本实施例系先完成位于非可视区18的遮蔽层22后才形成第一感测结构19与第二感测结构29，其余各部件之特征、材料特性以及制作方法与上述第一较佳实施例相似，故在此并不再赘述。
图5绘示本发明第三较佳实施例的结构剖面图，请参阅图5，与本发明第一较佳实施例相比不同之处在于，本实施例中的第二感测结构29系位于相对应于遮蔽层22的强光区26的非透明层38之下，在一较佳实施方式中，第二感测结构29可为第一感测结构19的延伸部位，故两者位于同一层级，且电性连接。因此制作流程上本实施例系先完成位于非可视区18的遮蔽层22以及位于强光区26内的非透明层38后才形成第一感测结构19与第二感测结构29，其余各部件之特征、材料特性以及制作方法与上述第一较佳实施例相似，故在此不再赘述。
上述本发明的各较佳实施例之触控面板10系将第一感测结构19与第二感测结构29直接制作于保护盖板12，不需要提供额外的基板承载第一感测结构19和或第二感测结构29，也就是触控玻璃一体化(Touch on lens, TOL)之结构，而本发明却不限于此，也就是说本发明可另外提供一基板承载第一感测结构19与第二感测结构29，图6绘示本发明第四较佳实施例的结构剖面图。如图6所示，本发明第四较佳实施例具有一基板42以及一保护盖板12，于保护盖板12定义有一可视区16以及非可视区18，一遮蔽层22形成于保护盖板12对应于非可视区18的位置，遮蔽层22上定义有至少一强光区26，且至少一非透明层38形成于遮蔽层22与基板42之间的强光区26内。与本发明第一较佳实施例的不同之处在于，本实施例更包括了一基板42位于非透明层38下方，且第一感测结构19形成于基板42，而非形成于保护盖板12，此外，本实施例中的第二感测结构29位于保护盖板12与遮蔽层22之间，在一较佳实施方式中，第二感测结构29可为第一感测结构19的延伸部位，故两者位于同一层级，且电性连接。本实施例中，在第一感测结构19与保护盖板12之间更包含有一胶层44，以贴合保护盖板12与基板42，其余各部件之特征、材料特性以及制作方法与上述本发明第一较佳实施例相同，故在此不再赘述。
本发明中，基板42与第二感测结构29的位置，并不限于上述实施例所示，也可以有其他不同组合，图7～图10绘示本发明数种不同实施例，各个实施例彼此间差异主要在于基板42与第二感测结构29的位置不同。图7绘示本发明第五较佳实施例的结构剖面图，如图7所示，本实施例与本发明第四较佳实施例不同的是，本实施例中基板42的位于遮蔽层22与非透明层38之间。其余各部件之特征、材料特性以及制作方法与上述第四较佳实施例相似，故在此并不再赘述。
图8绘示本发明第六较佳实施例的结构剖面图，如图8所示，本实施例与本发明第四较佳实施例不同之处在于，本实施例中基板42位于非透明层38下方，且第二感测结构29位于遮罩层22与非透明层38之间。其余各部件之特征、材料特性以及制作方法与上述第四较佳实施例相似，故在此并不再赘述。
图9绘示本发明第七较佳实施例的结构剖面图，如图9所示，本实施例与本发明第四较佳实施例不同之处在于，本实施例中基板42与第二感测结构29皆位于遮蔽层22与非透明层38之间。其余各部件之特征、材料特性以及制作方法与上述第四较佳实施例相似，故在此并不再赘述。
图10绘示本发明第八较佳实施例的结构剖面图，如图10所示，与本发明第四较佳实施例不同之处在于，本实施例中基板42与第二感测结构29皆位于非透明层38之下。其余各部件之特征、材料特性以及制作方法与上述第四较佳实施例相似，故在此并不再赘述。
为简化制程步骤，当本发明的第二触控结构29与非透明层38为上下相邻时，如上述的第二较佳实施例、第三较佳实施例、第六较佳实施例与第七较佳实施例之结构，此时可将第一触控结构19与第二触控结构29中的连接线34与非透明层38使用同样的材料，在同一制程步骤中进行制作，较佳选用的材质为不透光之导电材质。甚或是将第一触控结构19与第二触控结构29中的连接线34、非透明层38以及触控面板10的导电线路40使用同样的材料，于同一制程步骤中进行制作，此时较佳选用导电性良好且不透光的金属材质，制作步骤大致如下，先在非可视区18内形成一金属层，然后再以蚀刻等方式同时形成导电线路40与第一触控结构19、第二触控结构29中的连接线，并且在第一图案24周围形成非透明层38，此时导电线路40即位于遮蔽层22内。此外，为避免第二感测结构29以及周围的非透明层38挡住第一图案24，影响强光通过，因此非透明层38上蚀刻有一第二图案25，第二图案25与第一图案24相互重叠，且不会抵挡强光透过第一图案24。由于非透明层38为导电的金属层，当其与第二触控结构29之间无其他绝缘层级加以绝缘时，非透明层38会将第二触控结构29的不同轴向的导电单元相互导通，影响触控性能，鉴于此，在本实施例中，于非透明层38上蚀刻一第三图案(图未示)，第二感测结构29的各导电单元之间的间隙为一第四图案(图未示)，且第三图案与第四图案相互重叠，使得导电单元间需要绝缘的部份不存在可以将其导通的导电物质。
综上所述，本发明提供一种触控面板，其特征在于一非透明层设置于发光源与遮蔽层之间，可有效阻挡强光通过遮蔽层上因涂布不均产生的细小孔洞，而使得该些细小孔洞肉眼不可见，此外本发明的结构可整合于现有的触控面板结构或是触控玻璃一体化(Touch on lens)的触控面板。
以上所述仅为本发明之较佳实施例，凡依本发明申请专利范围所做之均等变化与修饰，皆应属本发明之涵盖范围。

Claims (16)

  1. 一种触控面板，包括：
    一保护盖板，包含一下表面，该下表面包含一可视区及一围绕于该可视区周边的非可视区；
    一第一感测结构，位于该下表面，并覆盖该可视区；
    一遮蔽层，位于该下表面之该非可视区内，并包含一强光区及一非强光区，该强光区内设有一第一图案；以及
    一非透明层，位于该遮蔽层之该强光区内，该非透明层下设有一第二图案，其中该第二图案与该第一图案相互重叠。
  2. 如权利要求1所述的触控面板，其特征在于，更包括一第二感测结构，设于该保护盖板与该遮蔽层之间，且位于遮蔽层之该强光区内。
  3. 如权利要求2所述的触控面板，其特征在于，更包括一基板，位于该非透明层下方，该第一感测结构形成于该基板上。
  4. 如权利要求2所述的触控面板，其特征在于，更包括一基板，位于该遮蔽层与该非透明层之间，该第一感测结构形成于该基板上。
  5. 如权利要求1所述的触控面板，其特征在于，更包括一第二感测结构，设于该遮蔽层与该非透明层之间，且位于该遮蔽层之该强光区内。
  6. 如权利要求5所述的触控面板，其特征在于，更包括一基板，位于该非透明层下方，该第一感测结构形成于该基板上。
  7. 如权利要求5所述的触控面板，其特征在于，更包括一基板，位于该第二感测结构与该非透明层之间，该第一感测结构形成于该基板上。
  8. 如权利要求1所述的触控面板，其特征在于，更包括一第二感测结构，位于相对应该遮蔽层之强光区的非透明层下方。
  9. 如权利要求8所述的触控面板，其特征在于，更包括一基板，位于该第二感测结构的下方，该第一感测结构形成于该基板上。
  10. 如权利要求3、4、6、7或9所述的触控面板，其特征在于，更包括一胶层，位于该第一感测结构与该保护盖板之间。
  11. 如权利要求2、3、4、5、6、7、8或9所述的触控面板，其特征在于，该第一感测结构与第二感测结构位于同一层级，且电性连接。
  12. 如权利要求5、6、8或9所述的触控面板，其特征在于，该第一感测结构包含：
    一第一轴向电极；
    一第二轴向电极，其中该第二轴向电极包括复数导电单元以及至少一连接线电性连接两相邻之该等导电单元；
    复数导电线路，分别与该第一轴向电极及该第二轴向电极电性连接。
  13. 如权利要求12所述的触控面板，其特征在于，该连接线与该非透明层的材料相同。
  14. 如权利要求12所述的触控面板，其特征在于，该连接线、该非透明层及该复数导电线路的材料相同。
  15. 如权利要求12所述的触控面板，其特征在于，该复数导电线路位于该遮蔽层内。
  16. 如权利要求5、6、8或9所述的触控面板，其特征在于，该非透明层更包含一第三图案，该第二感测结构包含一具有一第四图案的导电层，该第三图案与该第四图案相互重叠。
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CN106293174A (zh) * 2015-05-26 2017-01-04 宸鸿科技(厦门)有限公司 触控装置
CN105068689B (zh) * 2015-08-17 2018-05-29 北京搜狗科技发展有限公司 触摸屏显示装置及其制作方法
CN105045431B (zh) * 2015-08-31 2019-07-12 深圳市汇顶科技股份有限公司 用于触摸屏终端的智能传感器及其触摸检测方法
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CN110658933A (zh) * 2019-07-24 2020-01-07 苏州达方电子有限公司 发光触控板
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