CN202453845U

CN202453845U - Electrostatic protection structure of touch panel

Info

Publication number: CN202453845U
Application number: CN2011203698515U
Authority: CN
Inventors: 黄良杰; 杜秀兰; 陈伟
Original assignee: Lixin Optical (suzhou) Co Ltd
Current assignee: Lixin Optical (suzhou) Co Ltd
Priority date: 2011-09-27
Filing date: 2011-09-27
Publication date: 2012-09-26
Anticipated expiration: 2021-09-27
Also published as: TWM434256U

Abstract

The utility model discloses an electrostatic protection structure of a touch panel. The touch panel comprises an upper conducting layer and a lower layer of indium tin oxide (ITO) glass, wherein the upper conducting layer and the lower layer of ITO glass are attached to each other, wires inside the upper conducting layer are staggered with wires inside the lower layer of ITO glass to form a plurality of nodes for touch control, and wires of the upper layer and the lower layer are converged and then connected externally with a flexible circuit board. The electrostatic protection structure is characterized in that the electrostatic protection structure is a metal protective ring which is embedded inside the periphery of a touch panel body, and two ends of the metal protective ring are led into the flexible circuit board through leads and then connected with a grounding terminal which is externally connected with a printed circuit board (PCB). An electrostatic protection device using the electrostatic protection structure has a function that the high resolution can be kept without adding any element, can avoid system crash or product abandonment losses caused by the fact that electrostatic discharge is hard to conduct, is easy to achieve during manufacturing simultaneously and requires no additional operation procedure to be added.

Description

A kind of electrostatic protection structure of contact panel

Technical field

The utility model relates to a kind of contact panel test and uses safeguard structure.

Background technology

The appearance of contact panel has day by day replaced physical devices such as conventional button, button, switch, becomes a kind of electric control mode of novelty.And contact panel development in recent years is swift and violent, and the contact panel of processing based on characteristics such as resistance, electric capacity, piezoelectricity emerges in an endless stream.Yet the cabling mode of contact panel has brought the difficulty of production test at present, shows as when carrying out the ESD test, and a large amount of electric charges can't in time be discharged, thereby produces the phenomenon that contact panel crashes.For this reason, when improving the product function performance, take into account the electrostatic defending performance of product, making it can be a current main striving direction smoothly through the ESD test.

The utility model content

In view of the defective that above-mentioned prior art exists, the purpose of the utility model is the electrostatic protection structure that proposes a kind of contact panel, in time drains and is deposited in the electric charge in the wiring, guarantees when ESD tests, can not occur phenomenons such as deadlock.

The purpose of the utility model will be achieved through following technical scheme:

A kind of electrostatic protection structure of contact panel; Wherein said contact panel comprises upper strata conductive layer and the lower floor's ito glass that fits; And wiring and the wiring in the said lower floor ito glass in the conductive layer of said upper strata are interlaced; Formation touches a plurality of nodes of control, and upper and lower two layers of wiring converges the external flexible circuit board in back, it is characterized in that: said electrostatic protection structure is the metal protection circle that contact panel screen body is embedded with all around; And the two ends of said metal protection circle are incorporated into flexible circuit board through lead-in wire, are communicated to the earth terminal of external pcb board then.

The application of the utility model electrostatic protection apparatus, its remarkable advantage is following:

1, need not increase any components and parts can stop to be difficult to drain deadlock or the product rejection loss that causes because of ESD under the function that keeps high identification;

2, the convenient realization in processing procedure need not to increase extra flow chart.

Description of drawings

Fig. 1 is the touch panel structure provided synoptic diagram that the utlity model has electrostatic protection structure.

Embodiment

Following constipation closes the embodiment accompanying drawing, the embodiment of the utility model is done further to detail, so that the utility model technical scheme is easier to understand, grasp.

As shown in Figure 1, be that the utility model is directed against the conventional touch panel structure provided structural representation of doing after the improvement.Visible from illustrating; The conventional structure of this contact panel comprises upper strata conductive layer and the lower floor's ito glass that fits; And wiring and the wiring in this lower floor's ito glass in this upper strata conductive layer are interlaced; Form a plurality of nodes that touch control, upper and lower two layers of wiring converges the external flexible circuit board 4 in back.And the principle of controlling of traditional contact panel just realizes based on the conducting of above-mentioned each node or node set.Yet, further improving for making the touch-control sensing identification, node also significantly promotes with corresponding wiring density.

When functional performance was able to promote, the deadlock risk of contact panel product when carrying out the ESD test also further improved.For overcoming this defective; The utility model has designed electrostatic protection structure especially to traditional contact panel; The metal protection circle 2 that it is embedded with all around for contact panel screen body 1; And draw from the part stitch of flexible circuit board 4 at the two ends of this metal protection circle, is communicated to the earth terminal of external pcb board 3.Thereby when the contact panel product carries out the ESD test, can rapidly the electric charge guiding that accumulates in the intensive wiring be taken out of through this metal protection circle, and further take earth terminal out of to external pcb board through the pin of flexible circuit board.So just can fundamentally stop need not increase the function that any components and parts can keep high identification simultaneously because of ESD is difficult to drain deadlock or the product rejection loss that causes.

Certainly, more than only be the concrete exemplary applications of the utility model, the protection domain of the utility model is not constituted any limitation.Except that the foregoing description, the utility model can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.

Claims

1. the electrostatic protection structure of a contact panel; Wherein said contact panel comprises upper strata conductive layer and the lower floor's ito glass that fits; And wiring and the wiring in the said lower floor ito glass in the conductive layer of said upper strata are interlaced; Formation touches a plurality of nodes of control, and upper and lower two layers of wiring converges the external flexible circuit board in back, it is characterized in that: said electrostatic protection structure is the metal protection circle that contact panel screen body is embedded with all around; And the two ends of said metal protection circle are incorporated into flexible circuit board through lead-in wire, are communicated to the earth terminal of external pcb board then.