TWM470322U

TWM470322U - Touch panel

Info

Publication number: TWM470322U
Application number: TW102217311U
Authority: TW
Inventors: Chien-Yi Lee
Original assignee: Henghao Technology Co Ltd
Priority date: 2013-09-13
Filing date: 2013-09-13
Publication date: 2014-01-11

Abstract

A touch panel comprises a transparent substrate, electrodes, traces and at least two ground rings on the transparent substrate. The traces connect the electrodes to transmit signals. At least two ground rings connect to each other through a plurality of bridges and surround the electrodes and the traces . Each bridge has at least one ESD tip or peak to enhance local electric field strength and electrostatic discharge.

Description

觸控面板Touch panel

本新型係有關一種觸控面板，特別是關於一種具有多接地環設計的觸控面板。The present invention relates to a touch panel, and more particularly to a touch panel having a multi-ground ring design.

觸控面板依照感測技術的不同而主要可以區分為電阻式觸控、電容式以及光學式等觸控面板。由於電容式觸控面板具有反應時間快、可靠度佳以及耐用度高等優點，使得電容式觸控面板成為一種廣泛使用的觸控面板。電容式觸控面板主要是利用電容耦合效應以偵測觸碰位置。當手指觸碰電容式觸控面板的表面時，相應位置的電容量會受到改變，因而得以偵測到觸碰位置。The touch panel can be mainly divided into resistive touch, capacitive, and optical touch panels according to different sensing technologies. Capacitive touch panels have become a widely used touch panel because of their fast response time, high reliability and high durability. Capacitive touch panels mainly use capacitive coupling effects to detect touch positions. When the finger touches the surface of the capacitive touch panel, the capacitance of the corresponding position is changed, and the touch position is detected.

由於電容式觸控面板在玻璃基板上具有由透明導電材料形成之電極以及觸控線路，而觸控線路經常會因製造過程或其他原因所造成的靜電放電現象而損壞。因此觸控面板必須具有靜電放電的防護設計以避免靜電放電現象所造成的損壞。Since the capacitive touch panel has an electrode formed of a transparent conductive material and a touch line on the glass substrate, the touch line is often damaged by an electrostatic discharge phenomenon caused by a manufacturing process or the like. Therefore, the touch panel must have an electrostatic discharge protection design to avoid damage caused by electrostatic discharge.

第一圖顯示一電容式觸控面板的上視圖。電容式觸控面板在玻璃基板上具有由電極構成之可感應觸控區域以及環繞感應觸控區域的接地環(ground ring)12。電極由複數個分別沿著彼此垂直的二方向延伸之電極串列組成，其中一感測串列包含複數個第一電極14以及複數導線18。另一感測串列亦包含複數個第二電極16、複數導線19以及複數個橋接部17，各個橋接部17分別電性連接二相鄰第二電極16。接地環12環繞電極14與16、導線18與19及接合區11以達成靜電放電的防護設計。The first figure shows a top view of a capacitive touch panel. The capacitive touch panel has an inductive touch area composed of electrodes and a ground ring 12 surrounding the inductive touch area on the glass substrate. The electrode is composed of a plurality of electrode strings respectively extending in two directions perpendicular to each other, wherein one sensing series includes a plurality of first electrodes 14 and a plurality of wires 18. The other sensing series also includes a plurality of second electrodes 16, a plurality of wires 19, and a plurality of bridge portions 17, and the respective bridge portions 17 are electrically connected to the two adjacent second electrodes 16, respectively. The grounding ring 12 surrounds the electrodes 14 and 16, the wires 18 and 19, and the land 11 to achieve a protective design for electrostatic discharge.

然而，上述靜電放電的防護設計僅在電極及其導線外圍配至一接地環，雖可達到相當程度的靜電放電防護的功能，但仍存在有靜電放電亂竄的風險，靜電電流並可能會跳進與接地環相鄰的導線，造成導線線路或電極損壞。However, the protection design of the above electrostatic discharge is only assigned to a grounding ring at the periphery of the electrode and its wire. Although a certain degree of electrostatic discharge protection can be achieved, there is still a risk of electrostatic discharge, and the electrostatic current may jump. A wire adjacent to the grounding ring causes damage to the wire line or electrode.

因此，亟需提出一種新穎的觸控面板，用以改善上述傳統觸控面板的缺點。Therefore, there is a need to provide a novel touch panel for improving the disadvantages of the above conventional touch panel.

鑑於上述，本新型實施例的目的之一在於提出一種觸控面板，具備複數接地環設計，以增加觸控面板靜電放電的防護能力。In view of the above, one of the purposes of the new embodiment is to provide a touch panel having a plurality of grounding ring designs to increase the protection capability of the touch panel electrostatic discharge.

根據本新型一實施例，觸控面板包含透明基板、電極與導線及至少二接地環位於透明基板上。導線連接電極以傳送感測訊號。至少二接地環設置環繞電極與導線，二接地環之間以複數個橋接部相連，橋接部具有至少一靜電放電尖端以增加局部電場強度以利進行靜電放電。According to an embodiment of the invention, the touch panel comprises a transparent substrate, electrodes and wires, and at least two grounding rings are disposed on the transparent substrate. The wires are connected to the electrodes to transmit the sensing signals. At least two grounding rings are disposed around the electrode and the wires, and the two grounding rings are connected by a plurality of bridges, and the bridge portion has at least one electrostatic discharge tip to increase the local electric field strength to facilitate electrostatic discharge.

第二圖顯示本新型一實施例之觸控面板的上視圖。本實施例較佳適用於單片式玻璃(one glass substrate/solution, OGS)或單片薄膜式(one film substrate/solution, OFS)觸控面板，但不限定於此。The second figure shows a top view of the touch panel of an embodiment of the present invention. This embodiment is preferably applied to a one glass substrate/solution (OGS) or a one film substrate/solution (OFS) touch panel, but is not limited thereto.

如第二圖所示，電容式觸控面板在玻璃基板上具有由電極構成之可感應觸控區域以及環繞感應觸控區域彼此連接的第一接地環20與第二接地環22。玻璃基板上更包含導線或走線28與29連接第一電極24與第二電極26經接合區21傳送感測訊號。電極由複數個分別沿著彼此垂直的二方向延伸之電極以導線串列組成，其中一感測串列包含複數個第一電極24。另一感測串列亦包含複數個第二電極26以及複數個橋接部27，各個橋接部27分別電性連接二相鄰第二電極26。第一電極24與第二電極26所構成之電極串列可分別作為接收電極(Rx)與發射電極(Tx)。As shown in the second figure, the capacitive touch panel has a first grounding ring 20 and a second grounding ring 22 connected to each other by an inductive touch area composed of electrodes and a surrounding sensing touch area on the glass substrate. The glass substrate further includes wires or traces 28 and 29 connected to the first electrode 24 and the second electrode 26 to transmit a sensing signal through the land 21 . The electrode is composed of a plurality of electrodes extending in two directions perpendicular to each other, respectively, in a series of wires, wherein one sensing series includes a plurality of first electrodes 24. The other sensing series also includes a plurality of second electrodes 26 and a plurality of bridge portions 27, and each of the bridge portions 27 is electrically connected to two adjacent second electrodes 26, respectively. The electrode array formed by the first electrode 24 and the second electrode 26 can serve as a receiving electrode (Rx) and a transmitting electrode (Tx), respectively.

第一接地環20與第二接地環22環繞電極24與26與導線28以阻擋外部靜電。第一接地環20與第二接地環22之間具有橋接部以利向大氣環境進行靜電放電，並有效消耗靜電，以進行靜電放電防護。The first ground ring 20 and the second ground ring 22 surround the electrodes 24 and 26 and the wires 28 to block external static electricity. The first grounding ring 20 and the second grounding ring 22 have a bridge between them to facilitate electrostatic discharge to the atmospheric environment, and effectively consume static electricity for electrostatic discharge protection.

第一接地環20與第二接地環22之間的橋接部23主要用於靜電放電。橋接部23之形狀可為任何能夠造成局部電場強度增加的幾何形狀，一般為寬度逐漸縮減變窄的幾何形狀。第二圖所示橋接部23的形狀為二個三角形，且二個三角形以尖端相連以增加局部電場強度，但不限於此。此外，第二圖所示之二接地環20與22的外形以及數量亦僅為範例。亦即可具有超過二個環繞電極與導線之接地環。The bridge portion 23 between the first ground ring 20 and the second ground ring 22 is mainly used for electrostatic discharge. The shape of the bridge portion 23 can be any geometric shape that can cause an increase in the local electric field strength, and is generally a geometric shape in which the width is gradually reduced and narrowed. The bridge portion 23 shown in the second figure has two triangle shapes, and the two triangles are connected at the tip end to increase the local electric field strength, but are not limited thereto. In addition, the shape and number of the two grounding rings 20 and 22 shown in the second figure are also merely examples. It is also possible to have more than two grounding rings surrounding the electrodes and the wires.

電極包含導電材料所形成的結構。透明導電材料可為氧化銦錫（indium tin oxide, ITO）、氧化銦鋅（indium zinc oxide, IZO）、氧化鋅鋁（Al-doped ZnO, AZO）或氧化錫銻（antimony tin oxide, ATO）、奈米銀或奈米銅等。The electrode comprises a structure formed by a conductive material. The transparent conductive material may be indium tin oxide (ITO), indium zinc oxide (IZO), aluminum-doped ZnO (AZO) or antimony tin oxide (ATO), Nano silver or nano copper.

接地環22包含導電材料，例如氧化銦錫、氧化銦鋅、氧化鋅鋁或氧化錫銻，以任何的方式形成於觸控面板之側邊，並環繞觸控面板，但不限定於此。The grounding ring 22 includes a conductive material, such as indium tin oxide, indium zinc oxide, zinc aluminum oxide or tin oxide germanium, which is formed on the side of the touch panel in any manner and surrounds the touch panel, but is not limited thereto.

以上所述僅為本新型之較佳實施例而已，並非用以限定本新型之申請專利範圍；凡其它未脫離新型所揭示之精神下所完成之等效改變或修飾，均應包含在下述之申請專利範圍內。The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; any equivalent changes or modifications made without departing from the spirit of the novel disclosure are included in the following. Within the scope of the patent application.

11‧‧‧接合區
12‧‧‧接地環
14‧‧‧第一電極
16‧‧‧第二電極
17‧‧‧橋接部
18‧‧‧導線
19‧‧‧導線
20‧‧‧第一接地環
21‧‧‧接合區
22‧‧‧第二接地環
23‧‧‧橋接部
24‧‧‧電極
26‧‧‧電極
27‧‧‧橋接部
28‧‧‧導線
29‧‧‧導線11‧‧‧ junction area
12‧‧‧ Grounding ring
14‧‧‧First electrode
16‧‧‧second electrode
17‧‧‧Bridge
18‧‧‧Wire
19‧‧‧Wire
20‧‧‧First grounding ring
21‧‧‧ junction area
22‧‧‧Second grounding ring
23‧‧‧Bridge
24‧‧‧ electrodes
26‧‧‧Electrode
27‧‧‧Bridge
28‧‧‧Wire
29‧‧‧Wire

第一圖顯示一電容式觸控面板的上視圖。第二圖顯示本新型一實施例之觸控面板的上視圖。The first figure shows a top view of a capacitive touch panel. The second figure shows a top view of the touch panel of an embodiment of the present invention.

20‧‧‧第一接地環 20‧‧‧First grounding ring

21‧‧‧接合區 21‧‧‧ junction area

22‧‧‧第二接地環 22‧‧‧Second grounding ring

23‧‧‧橋接部 23‧‧‧Bridge

24‧‧‧電極 24‧‧‧ electrodes

26‧‧‧電極 26‧‧‧Electrode

27‧‧‧橋接部 27‧‧‧Bridge

28‧‧‧導線 28‧‧‧Wire

29‧‧‧導線 29‧‧‧Wire

Claims

一種觸控面板，包含：一透明基板；一電極與導線位於該透明基板上，該導線連接該電極以傳送感測訊號；及至少二接地環位於該透明基板上並設置環繞該電極與該導線，該二接地環之間以複數個橋接部相連，該橋接部具有至少一靜電放電尖端以增加局部電場強度以利進行靜電放電。A touch panel includes: a transparent substrate; an electrode and a wire on the transparent substrate, the wire is connected to the electrode to transmit a sensing signal; and at least two grounding rings are disposed on the transparent substrate and disposed around the electrode and the wire The two grounding rings are connected by a plurality of bridges having at least one electrostatic discharge tip to increase the local electric field strength to facilitate electrostatic discharge.

根據申請專利範圍第1項所述之觸控面板，該橋接部的形狀包含二個以尖端相連之三角形。According to the touch panel of claim 1, the bridge portion has two triangles connected by a tip end.

根據申請專利範圍第1項所述之觸控面板，其中該電極包含透明導電材料所形成的透光結構，該透明導電材料包含氧化銦錫（indium tin oxide, ITO）、氧化銦鋅（indium zinc oxide, IZO）、氧化鋅鋁（Al-doped ZnO, AZO）或氧化錫銻（antimony tin oxide, ATO）、奈米銀或奈米銅。The touch panel of claim 1, wherein the electrode comprises a transparent structure formed of a transparent conductive material, the transparent conductive material comprising indium tin oxide (ITO), indium zinc (indium zinc) Oxide, IZO), Al-doped ZnO (AZO) or antimony tin oxide (ATO), nano-silver or nano-copper.

根據申請專利範圍第1項所述之觸控面板，其中該接地環包含氧化銦錫、氧化銦鋅、氧化鋅鋁或氧化錫銻。The touch panel of claim 1, wherein the ground ring comprises indium tin oxide, indium zinc oxide, zinc aluminum oxide or tin oxide.

根據申請專利範圍第1項所述之觸控面板，其中該靜電放電尖端之形狀包含任何能夠造成局部電場強度增加的幾何形狀。The touch panel of claim 1, wherein the shape of the electrostatic discharge tip comprises any geometry capable of causing an increase in local electric field strength.

根據申請專利範圍第1項所述之觸控面板，其中該觸控面板包含一單片式玻璃觸控面板或一單片薄膜式觸控面板。The touch panel of claim 1, wherein the touch panel comprises a single-chip glass touch panel or a single-film touch panel.