CN201945982U

CN201945982U - Structure of compatible touch control sensor

Info

Publication number: CN201945982U
Application number: CN2011200231667U
Authority: CN
Inventors: 卢镇州; 黄锦贤; 李军
Original assignee: ZHANGZHOU BAIYU INDUSTRY & TRADE Co Ltd
Current assignee: Wenshan Jiaxin technology limited company
Priority date: 2011-01-25
Filing date: 2011-01-25
Publication date: 2011-08-24
Anticipated expiration: 2021-01-25

Abstract

The utility model discloses a structure of a compatible touch control sensor. The utility model is characterized in that the structure comprises a base plate, a three-layer structure and a control circuit, wherein the three-layer structure includes a shielding layer, a glass layer and an electrode layer from bottom to top; the control circuit includes a flexible circuit board and all components arranged on the flexible circuit board; a conductive electrode array is arranged on the electrode layer, and an electrode connecting line is arranged between the electrode array and the control circuit; the electrode connecting line has a suspended line structure which complies with the ITE chip shielding requirements; a shielding loop circuit line communicated with the control circuit is also arranged at the external edge of the electrode array; and the shielding layer also comprises a shielding connecting point communicated with the control circuit. The base plate includes the shielding layer as well as a suspended line and a shielding loop circuit line of the electrode layer, the two SoCs (system on chips) of Cypress and ITE can be implemented on the same base plate by virtue of the structure; different schemes can be achieved by only making small changes to the flexible circuit board of the control circuit, therefore, the cost of change is low, and the response is quick.

Description

A kind of structure of compatible type touch sensing

Technical field

The utility model relates to a kind of structure of touch-control input equipment, specifically is a kind of structure of compatible type touch sensing.

Background technology

In various portable equipments, the input equipment of touch control operation obtains widely applying, because its physical construction is simple, compact conformation, user-friendly for operation etc. advantage, makes its spreading speed increase fast.Especially capacitive touch screen, along with the improvement of technology, capacitive touch screen is outstanding in cost, precision, aspect performance such as anti-interference, has application prospects.

Capacitive touch screen has a touch sensing at present, is useful on the electrod-array of human body touch-control on this sensor, also needs simultaneously and main-machine communication, finishes the detection and Identification task to various touch control operations.These functions need corresponding SOC (system on a chip) as support, and the present more common monolithic programmable system on chip that also provides with regard to small part manufacturer is such as Cypress and ITE.

Many touch sensings all adopt this two classes system-on-chip designs correspondent control circuits.In the practical application, this two classes SOC (system on a chip) causes the shielding line method for designing of its whole sensor different to the electric requirement difference of Trackpad shielding.SOC (system on a chip) such as Cypress series need connect an independent screen layer that has on the sensor, and ITE then need carry out unique cabling design at the electrod-array layer and finish function of shielding, does not need extra screen layer.Thus, at Trackpad,, then need two kinds of different sensors of design to adapt to it usually if use two or more dissimilar programmable system on chip instead at same portable equipment design.Two class sensors all need independent mould and assembling, and design and manufacturing cost are improved, and a kind of die sinking price of sensor is ten tens thousand of Renminbi often, also do not comprise corresponding production procedure and management expenditure in addition.

So sensor just there is a kind of demand, makes to reach two kinds of different SOC (system on a chip) schemes of fast adaptation by the design alteration of minimum, to obtain lower cost input and to produce change faster in batches.

The utility model content

At above demand, the utility model proposes a kind of structure of compatible type touch sensing, its technical scheme is as follows:

A kind of structure of compatible type touch sensing, it comprises:

One substrate, three-decker is respectively a screen layer, a glassy layer and an electrode layer from the bottom to the top; And

One control circuit comprises flexible PCB and all components and parts on it;

The electrod-array that has conduction on the described electrode layer has electrode connecting line between this electrod-array and the described control circuit; Has the unsettled line structure that meets ITE chip shielding requirements on the described electrode connecting line; Described electrod-array outer rim also has a shading ring route that can be communicated with described control circuit; Comprise the shielding tie point that can be communicated with on the described screen layer with described control circuit.

Preferred person as the technical program, can do following improvement:

The described substrate and the control circuit of one preferred embodiment all are positioned on the same flat board.

The described flat board of one preferred embodiment is a rectangle.

The described electrode connecting line of one preferred embodiment has many cablings side by side, and the terminals that vertically stretch out on the described cabling; Described unsettled line starts from the tie point of a certain described cabling and described terminals, and the extended line for this place's cabling ends at adjacent described terminals place.

The described shading ring route of one preferred embodiment distributes along three adjacent edges of rectangular outside periphery of described flat board, and its two ends are positioned on another limit of rectangle jointly.

The described screen layer of one preferred embodiment is for covering the ITO material electrode of described glassy layer bottom.

The electrod-array of the described electrode layer of one preferred embodiment is an ITO material electrod-array.

The described electrode connecting line of one preferred embodiment, unsettled line, shading ring route are the ITO material and make.

The beneficial effect that the utility model brings is:

1. substrate has comprised screen layer, and the unsettled line of electrode layer and shading ring route, such structure can realize Cypress and ITE two class SOC (system on a chip) on same substrate, only need that the flexible PCB of control circuit is done tiny change and can reach different schemes, the change cost is low, response is rapid.

2. screen layer and unsettled line, the electric aspect of shading ring route can not interact each other, have favorable compatibility.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing embodiment:

Fig. 1 is the utility model one embodiment section slice map;

Fig. 2 is Fig. 1 embodiment upward view;

Fig. 3 is the partial top view of the unsettled line of Fig. 1 embodiment on electrode layer;

Fig. 4 is the vertical view of Fig. 1 embodiment shading ring route at electrode layer.

Embodiment

As shown in Figure 1, be the utility model one embodiment section slice map.Extremely the top is respectively screen layer, glassy layer and electrode layer from the bottom, and wherein screen layer and electrode layer all adopt the ITO material.Therefore this structure can be used for touch-screen owing to transparent on the normal direction of flat board.

Fig. 2 is Fig. 1 embodiment upward view.Maximum housing is a glassy layer 100 among the figure, and glassy layer 100 bottoms have the screen layer 200 of ITO material, and this screen layer has a shielding tie point 201.This structure is to be provided with for adapting to the Cypress SOC (system on a chip).The housing of dotted line promptly is the flexible PCB 400 at control circuit place, and this flexible PCB promptly is connected by shielding tie point 201 with screen layer 200.

Fig. 3 is the partial top view of the unsettled line of Fig. 1 embodiment on electrode layer; Article two,

cabling

310 and 320 parallel to each other each has

terminals

311 and 321, and these two terminals have and the cabling vertical component.Unsettled line 322 starts from the tie point of cabling 320 and terminals 321, is the extended line of cabling 320 at this place, ends at adjacent terminals 311 places.Such structure satisfies the shielding demand of ITE SOC (system on a chip) to electrode layer.

As Fig. 4, be the vertical view of Fig. 1 embodiment shading ring route at electrode layer.Shading ring route 330 is in following three edges of glassy layer 100, and its two ends have two

terminals

331 and 332, and these two terminals are connected and are communicated with the flexible PCB 400 at control circuit place, constitutes the shielding line of a sealing.

So, present embodiment can be taken into account Cypress and two kinds of programmable system on chip of ITE, is simultaneously to be used on the display screen of portable equipment as touch-screen.

The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented according to this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model contains.

Claims

1. the structure of a compatible type touch sensing, it is characterized in that: it comprises:

One control circuit comprises flexible PCB and all components and parts on it;

2. the structure of a kind of compatible type touch sensing according to claim 1 is characterized in that: described substrate and control circuit all are positioned on the same flat board.

3. the structure of a kind of compatible type touch sensing according to claim 2 is characterized in that: described flat board is a rectangle.

4. the structure of a kind of compatible type touch sensing according to claim 3 is characterized in that: described electrode connecting line has many cablings side by side, and the terminals that vertically stretch out on the described cabling; Described unsettled line starts from the tie point of a certain described cabling and described terminals, and the extended line for this place's cabling ends at adjacent described terminals place.

5. the structure of a kind of compatible type touch sensing according to claim 4 is characterized in that: described shading ring route distributes along three adjacent edges of rectangular outside periphery of described flat board, and its two ends are positioned on another limit of rectangle jointly.

6. the structure of a kind of compatible type touch sensing according to claim 5 is characterized in that: described screen layer is for covering the ITO material electrode of described glassy layer bottom.

7. the structure of a kind of compatible type touch sensing according to claim 6 is characterized in that: the electrod-array of described electrode layer is an ITO material electrod-array.

8. the structure of a kind of compatible type touch sensing according to claim 7 is characterized in that: described electrode connecting line, unsettled line, shading ring route are the ITO material and make.