WO2017016192A1 - Ogs电容式触摸屏及其制造方法 - Google Patents
Ogs电容式触摸屏及其制造方法 Download PDFInfo
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- WO2017016192A1 WO2017016192A1 PCT/CN2016/070233 CN2016070233W WO2017016192A1 WO 2017016192 A1 WO2017016192 A1 WO 2017016192A1 CN 2016070233 W CN2016070233 W CN 2016070233W WO 2017016192 A1 WO2017016192 A1 WO 2017016192A1
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- WIPO (PCT)
- Prior art keywords
- touch
- electrodes
- transparent conductive
- touch electrodes
- conductive layer
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Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F71/00—Manufacture or treatment of devices covered by this subclass
- H10F71/138—Manufacture of transparent electrodes, e.g. transparent conductive oxides [TCO] or indium tin oxide [ITO] electrodes
- H10F71/1385—Etching transparent electrodes
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
Definitions
- the present invention relates to the field of display technologies, and in particular, to an OGS capacitive touch screen and a method of fabricating the same.
- the OGS (On Glass Solution) touch screen is a technology for directly forming an Indium Tin Oxide (ITO) layer and a sensor on a glass substrate, wherein the glass substrate serves as both a glass cover and a touch sensor.
- ITO Indium Tin Oxide
- the OGS solution is advantageous because it saves a piece of glass substrate and the corresponding bonding process, which reduces the production cost.
- the metal bridge structure is used to achieve the connectivity of the drive line (Tx) and the sense line (Rx).
- the metal bridge structure process is complicated, and since the metal is easily oxidized, an additional over coat layer needs to be formed thereon.
- the lead made of a metal material for example, Mo-Al-Mo
- Mo-Al-Mo is not transparent, resulting in loss of visual effect.
- it is arranged in the bezel of the screen in order to conceal the metal lead, a certain frame area will be occupied, and thus it is difficult to realize a narrow bezel design.
- a method of fabricating an OGS capacitive touch screen comprising: forming a first transparent conductive layer on a glass substrate; patterning the first transparent conductive layer to form a first direction a plurality of first touch electrodes of the cloth; forming a cover layer on the patterned first transparent conductive layer; forming a plurality of via holes in the cover layer, the via holes corresponding to the plurality of first touch electrodes a reserved lead position; forming a second transparent conductive layer on the cover layer having the via; and patterning the second transparent conductive layer to form a plurality of second touch electrodes arranged in the second direction.
- patterning the second transparent conductive layer further includes: forming a plurality of leads for the first touch electrodes and a plurality of leads for the second touch electrodes, wherein The respective leads for the first touch electrodes are connected to the respective first touch electrodes through the via holes, and the respective leads for the second touch electrodes are directly connected to the corresponding second touch electrodes.
- the lead and the plurality of second touch electrodes are formed using one patterning process.
- the patterning process comprises photolithography or laser etching.
- the leads are arranged in a viewable area of the touch screen.
- a plurality of leads for the first touch electrode and a plurality of leads for the second touch electrode are both drawn on a top side or a bottom side of a viewable area of the touch screen such that the touch screen can There are no left and right side borders.
- the first direction is perpendicular to the second direction.
- the plurality of first touch electrodes are driving electrodes
- the plurality of second touch electrodes are sensing electrodes
- the plurality of first touch electrodes are sensing electrodes
- the plurality of second touches The electrode is a drive electrode
- the cover layer is formed by exposure development.
- the cover layer is a transparent resin material.
- the first and second transparent conductive layers are indium tin oxide materials.
- the method further includes forming a patterned black matrix on the glass substrate on the non-visible area of the screen before forming the first transparent conductive layer.
- an OGS capacitive touch screen comprising: a glass substrate; a first transparent conductive layer formed on the glass substrate and including a plurality of first touch electrodes arranged in a first direction a capping layer formed on the first transparent conductive layer; a plurality of via holes formed in the cap layer, the via holes corresponding to lead positions reserved for the plurality of first touch electrodes; A second transparent conductive layer is formed on the cover layer and includes a plurality of second touch electrodes arranged in a second direction.
- FIG. 1 schematically illustrates a structural side view of a cross section of an OGS capacitive touch screen in accordance with an embodiment of the present invention
- FIG. 2 schematically illustrates a junction of an OGS capacitive touch screen in accordance with an embodiment of the present invention. Top view;
- FIG. 3 is a flow chart of a method of fabricating an OGS capacitive touch screen in accordance with an embodiment of the present invention.
- FIG. 1 schematically illustrates a structural side view of a cross section of an OGS capacitive touch screen 100 in accordance with an embodiment of the present invention.
- the touch screen 100 may include a glass substrate 101, a first transparent conductive layer including a plurality of first touch electrodes 102 arranged in a first direction, a cover layer 103, and a plurality of layers formed in the cover layer
- the first and second transparent conductive layers can be indium tin oxide (ITO) materials or other suitable materials.
- ITO indium tin oxide
- the glass substrate 101 is a substrate for forming a touch sensor, and is also a cover for a display panel on which a patterned black matrix 107 can be formed. It should be understood that the glass substrate 101 is exemplary; other materials are also possible.
- the black matrix is located in the non-visible area of the screen, and the main function is to prevent light leakage.
- the first transparent conductive layer is formed on the glass substrate 101.
- the first transparent conductive layer may include a plurality of first touch electrodes 102 arranged along the first direction.
- the first touch electrode 102 is illustrated as a strip, however, as will be discussed later, it may have other shapes.
- the cover layer 103 is formed on the first transparent conductive layer and functions to isolate the first touch electrode 102 of the first transparent conductive layer and the second touch electrode 105 of the second transparent conductive layer. Thus, a complicated bridging structure is not required to separate the first touch electrode 102 and the second touch electrode 105.
- the cover layer 103 is typically a transparent material. In one example, the cover layer 103 is a transparent resin material.
- a plurality of vias 104 are formed in the cap layer 103.
- the vias 104 correspond to lead locations reserved for the plurality of first touch electrodes 102. Since the first touch electrode 102 of the first transparent conductive layer is covered by the cover layer 103, an electrical connection path for the first touch electrode 102 is required.
- One option is to form leads in the first transparent conductive layer along the direction in which the first touch electrodes 102 extend.
- the leads are respectively formed along the respective extending directions, then two of the resulting touch screens would be required Walking in the side border The line is because the extending direction of the first touch electrode 102 is generally perpendicular to the extending direction of the second touch electrode 105.
- This is disadvantageous for circuit routing and narrow bezel design.
- vias 104 between the first and second transparent conductive layers of the OGS touch screen the need for complex traces is eliminated, such that the OGS touch screen can provide design flexibility (eg, a narrow bezel).
- a second transparent conductive layer is formed on the cover layer 103.
- the second transparent conductive layer may include a plurality of second touch electrodes 105 arranged in the second direction.
- the extending direction of the second touch electrode 105 ie, the second direction
- the first direction may intersect other angles other than 90° of the second direction.
- the first touch electrode 102 may be a drive electrode (Tx), and the second touch electrode 105 may be a sense electrode (Rx).
- the first touch electrode 102 can be a sensing electrode (Rx) and the second touch electrode 105 can be a driving electrode (Tx).
- the second touch electrode 105 as the sensing electrode (Rx) is closer to a touch object (for example, a user's finger) that operates the touch screen, which is advantageous in improving sensitivity.
- the touch screen 100 also includes a plurality of leads 106 formed on the cover layer 103.
- the lead 106 and the plurality of second touch electrodes 105 may be formed in the second transparent conductive layer using a patterning process.
- the lead 106 and the second touch electrode 105 are in the same layer and are of the same material. Only one lead 106 is shown in FIG. 1 that is connected to the first touch electrode 102 through a via 104.
- the touch screen 100 also includes leads 106 for the second touch electrodes 105 that can be directly connected to the respective second touch electrodes 105.
- each of the first touch electrode 102 and the second touch electrode 105 may include a plurality of electrode units connected in series. As is known, each of these electrode units may have a diamond shape.
- the first transparent conductive layer and the second transparent conductive layer are isolated from each other by the cover layer 103 (not shown) without using a bridge structure, resulting in a simplified process.
- the first touch electrode 102 and the second touch electrode 105 may form a capacitance at an intersection.
- one diamond electrode unit of the first touch electrode 102 and one diamond electrode unit of the second touch electrode 105 may form a capacitor.
- a plurality of vias 104 are formed in the cap layer 103 such that the leads 106 for the first touch electrodes 102 can be drawn from the same side of the touch screen 100 as the leads 106 for the second touch electrodes 105, as shown in FIG. Shown.
- the lead 106 is a transparent conductive material (for example, ITO), which provides improved light transmittance and visual effects as well as possible narrow bezel design (due to not A border is required to accommodate visible metal leads).
- the traces can be placed in the VA Zone (View Area), ie the viewable area of the screen, rather than in the bezel, enabling a borderless design. More specifically, both the lead for the first touch electrode 102 and the lead for the second touch electrode 105 can be drawn out on the top or bottom side of the viewable area of the touch screen 100, so that the touch screen 100 can be free of left and right side borders.
- FIG. 3 is a flow diagram of a method 200 of fabricating an OGS capacitive touch screen in accordance with an embodiment of the present invention.
- the method 200 can include:
- the first transparent conductive layer can be formed using, for example, a vacuum sputtering process, which is known in the art and will not be described in detail.
- the first transparent conductive layer is patterned to form a plurality of first touch electrodes arranged along the first direction.
- the first touch electrode can be formed using a photolithography or laser lithography process.
- the cover layer is a transparent resin material which can be formed by exposure development.
- the first transparent conductive layer can be formed using, for example, a vacuum sputtering process.
- the second touch electrode can be formed using a photolithography or laser lithography process.
- patterning the second transparent conductive layer may further include forming a plurality of leads for the first touch electrode and the second touch electrode, respectively.
- the respective leads for the first touch electrodes are connected to the respective first touch electrodes through the vias, and the respective leads for the second touch electrodes are directly connected to the corresponding second touch electrodes.
- the leads for the first touch electrode and the second touch electrode and the plurality of second touch electrodes may be It is formed by using a patterning process. As mentioned previously, the process can include photolithography or laser etching.
- photolithography refers to a process of transferring a desired pattern onto a substrate by using an optical-chemical reaction principle and a chemical/physical etching method
- laser etching refers to etching a film directly on a substrate by using a laser.
- the leads can be formed while forming the second touch electrodes in the second transparent conductive layer without adding an additional process.
- the method 200 does not require the formation of an additional cap layer for protecting the metal leads from oxidation as compared to the prior art using metal leads (e.g., Mo-Al-Mo).
- the method 200 can further include forming a patterned black matrix on the glass substrate that is located in the non-visible area of the screen prior to forming the first transparent conductive layer.
- the main function of the black matrix is to prevent light leakage.
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
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- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
Description
Claims (22)
- 一种制造OGS电容式触摸屏的方法,包括:在玻璃基板上形成第一透明导电层;使所述第一透明导电层图案化以形成沿第一方向排布的多个第一触摸电极;在图案化的第一透明导电层上形成覆盖层;在所述覆盖层中形成多个过孔,所述过孔对应于为所述多个第一触摸电极预留的引线位置;在具有所述过孔的覆盖层上形成第二透明导电层;以及使所述第二透明导电层图案化以形成沿第二方向排布的多个第二触摸电极。
- 根据权利要求1所述的方法,其中,使所述第二透明导电层图案化还包括:形成用于所述第一触摸电极的多个引线和用于第二触摸电极的多个引线,其中,用于所述第一触摸电极的各个引线通过所述过孔连接到相应的第一触摸电极,用于所述第二触摸电极的各个引线与所述第二触摸电极位于同一层且与相应的所述第二触摸电极直接相连。
- 根据权利要求2所述的方法,其中,所述引线与所述多个第二触摸电极利用一次构图工艺形成。
- 根据权利要求3所述的方法,其中,所述构图工艺包括光刻或激光刻蚀。
- 根据权利要求2所述的方法,其中,在所述触摸屏的可视区域布置所述引线。
- 根据权利要求5所述的方法,其中,用于所述第一触摸电极的多个引线和用于第二触摸电极的多个引线均被引出在所述触摸屏的可视区域的顶侧或底侧。
- 根据权利要求1所述的方法,其中,所述第一方向与所述第二方向垂直。
- 根据权利要求1所述的方法,其中,所述多个第一触摸电极为驱动电极,并且所述多个第二触摸电极为感应电极,或者所述多个第一触摸电极为感应电极,并且所述多个第二触摸电极 为驱动电极。
- 根据权利要求1所述的方法,其中,所述覆盖层利用曝光显影而形成。
- 根据权利要求1所述的方法,其中,所述覆盖层为透明树脂材料。
- 根据权利要求1所述的方法,其中,所述第一透明导电层和第二透明导电层由氧化铟锡材料形成。
- 根据权利要求1所述的方法,还包括:在形成所述第一透明导电层之前,在所述玻璃基板上形成位于屏幕的非可视区域的图案化黑矩阵。
- 一种OGS电容式触摸屏,包括:玻璃基板;第一透明导电层,形成于所述玻璃基板上并且包括沿第一方向排布的多个第一触摸电极;覆盖层,形成于所述第一透明导电层上;多个过孔,形成于所述覆盖层中,所述过孔对应于为所述多个第一触摸电极预留的引线位置;以及第二透明导电层,形成于所述覆盖层上并且包括沿第二方向排布的多个第二触摸电极。
- 根据权利要求13所述的触摸屏,还包括形成在所述覆盖层上分别用于所述第一触摸电极的多个引线和用于第二触摸电极的多个引线,其中,用于所述第一触摸电极的各个引线通过所述过孔连接到相应的第一触摸电极,用于所述第二触摸电极的各个引线与相应的所述第二触摸电极直接相连。
- 根据权利要求14所述的触摸屏,其中,所述引线与所述多个第二触摸电极位于同一层且材料相同。
- 根据权利要求14所述的触摸屏,其中,所述引线被布置在所述触摸屏的可视区域。
- 根据权利要求16所述的触摸屏,其中,用于所述第一触摸电极的多个引线和用于第二触摸电极的多个引线均被引出在所述触摸屏的可视区域的顶侧或底侧。
- 根据权利要求13所述的触摸屏,其中,所述第一方向与所述 第二方向垂直。
- 根据权利要求13所述的触摸屏,其中,所述多个第一触摸电极为驱动电极,并且所述多个第二触摸电极为感应电极,或者所述多个第一触摸电极为感应电极,并且所述多个第二触摸电极为驱动电极。
- 根据权利要求13所述的触摸屏,其中,所述覆盖层由透明树脂材料形成。
- 根据权利要求13所述的触摸屏,其中,所述第一透明导电层和第二透明导电层由氧化铟锡材料形成。
- 根据权利要求13所述的触摸屏,还包括形成在所述玻璃基板上的位于屏幕的非可视区域的图案化黑矩阵。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/105,671 US10248268B2 (en) | 2015-07-30 | 2016-01-06 | OGS capacitive touch screen and manufacturing method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510457155.2A CN105094482B (zh) | 2015-07-30 | 2015-07-30 | Ogs电容式触摸屏及其制造方法 |
| CN201510457155.2 | 2015-07-30 |
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| Publication Number | Publication Date |
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| WO2017016192A1 true WO2017016192A1 (zh) | 2017-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/CN2016/070233 Ceased WO2017016192A1 (zh) | 2015-07-30 | 2016-01-06 | Ogs电容式触摸屏及其制造方法 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US10248268B2 (zh) |
| CN (1) | CN105094482B (zh) |
| WO (1) | WO2017016192A1 (zh) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105094482B (zh) | 2015-07-30 | 2018-06-22 | 合肥鑫晟光电科技有限公司 | Ogs电容式触摸屏及其制造方法 |
| CN106970730A (zh) * | 2016-01-13 | 2017-07-21 | 中华映管股份有限公司 | 触控面板及其制造方法 |
| CN106775066B (zh) * | 2016-11-29 | 2024-04-05 | 合肥鑫晟光电科技有限公司 | 触摸屏及其制作方法、触控显示装置 |
| CN106873835B (zh) * | 2017-02-23 | 2020-05-05 | 武汉华星光电技术有限公司 | 触控面板及其制作方法、触控显示屏 |
| CN107102768B (zh) * | 2017-03-22 | 2024-02-13 | 安徽精卓光显技术有限责任公司 | 触控面板及显示设备 |
| CN107656646A (zh) * | 2017-09-27 | 2018-02-02 | 上海天马微电子有限公司 | 触摸传感器及触摸显示面板 |
| CN107562301B (zh) * | 2017-10-30 | 2024-01-30 | 深圳市盛迪瑞科技有限公司 | 大尺寸电容式触摸屏及其内外屏之间的固定连接方法及连接件 |
| CN108334230B (zh) * | 2018-02-07 | 2022-04-15 | 业成科技(成都)有限公司 | 触控装置 |
| CN108400254A (zh) * | 2018-03-01 | 2018-08-14 | 京东方科技集团股份有限公司 | 触摸显示基板及其制备方法、触摸显示基板 |
| CN109947292B (zh) * | 2019-03-14 | 2022-07-19 | 合肥鑫晟光电科技有限公司 | 一种窄边框触摸屏的制备方法、窄边框触摸屏及显示装置 |
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2015
- 2015-07-30 CN CN201510457155.2A patent/CN105094482B/zh not_active Expired - Fee Related
-
2016
- 2016-01-06 US US15/105,671 patent/US10248268B2/en active Active
- 2016-01-06 WO PCT/CN2016/070233 patent/WO2017016192A1/zh not_active Ceased
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| CN104793822A (zh) * | 2015-04-20 | 2015-07-22 | 南昌欧菲光科技有限公司 | 触控面板及其制作方法 |
| CN204515750U (zh) * | 2015-04-20 | 2015-07-29 | 南昌欧菲光科技有限公司 | 触控面板 |
| CN105094482A (zh) * | 2015-07-30 | 2015-11-25 | 合肥鑫晟光电科技有限公司 | Ogs电容式触摸屏及其制造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20180203538A1 (en) | 2018-07-19 |
| CN105094482B (zh) | 2018-06-22 |
| CN105094482A (zh) | 2015-11-25 |
| US10248268B2 (en) | 2019-04-02 |
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