CN202205184U

CN202205184U - Narrow frame touch screen

Info

Publication number: CN202205184U
Application number: CN2011202977484U
Authority: CN
Inventors: 张智彪
Original assignee: SHENZHEN BITLAND INFORMATION TECHNOLOGY Co Ltd
Current assignee: SHENZHEN BITLAND INFORMATION TECHNOLOGY Co Ltd
Priority date: 2011-08-16
Filing date: 2011-08-16
Publication date: 2012-04-25
Anticipated expiration: 2021-08-16

Abstract

The utility model discloses a narrow frame touch screen including a composite glass substrate and a control IC, a layer of ITO is coated on each of the inner surface of the glass substrate and an interlayer, the ITO coating of the interlayer is used as an induction coating attached on the glass substrate, the induction coating includes top-layer induction lines, bottom-layer ITO induction lines and ITO driving lines, two adjacent top-layer induction lines share one ITO driving line, two adjacent bottom-layer induction lines also share one ITO driving line, the induction lines are connected to the control IC via the ITO driving lines. Because the two adjacent ITO induction lines are connected through the same ITO driving line, the width of the ITO lines at the two sides is reduced to half of the original width, thereby reducing the width of the black frame at the two sides.

Description

Narrow-frame touch panel

Technical field

The present invention relates to a kind of touch-screen, relate to a kind of narrow-frame touch panel in particular.

Background technology

The capacitor induction type touch-screen is to utilize the induction by current of human body to carry out work; When finger touch is to metal level; Because people's bulk electric field, user and touch screen surface form a coupling capacitance, for high-frequency current; Electric capacity is direct conductor, so finger siphons away a very little electric current from contact point.This electric current divides the electrode on four jiaos from touch-screen and flows out, and the electric current of these four electrodes of flowing through is directly proportional with the distance of pointing four jiaos, and controller passes through the accurate Calculation to these four current ratios, draws touch point position.

ITO is the abbreviation of Indium Tin Oxides, and it is the nano indium tin metal oxide, has the good electric conductivity and the transparency, can cut off harmful electron irradiation, ultraviolet ray and far infrared.Touch-screen on the market is most of for pointing the contact input now; And the support multiple point touching, this touch-screen need be done special ITO structure on induction coating sensor, connect control IC to each ITO sense line structure through different ITO driver circuits then; Include two-layer ITO sense line among this induction coating sensor; One deck is a top layer ITO induction line, and one deck is a bottom ITO induction line, and the principle of its touch sensible is: when people's finger near ITO the time; Electric capacity between top layer ITO induction line and the bottom ITO induction line can change; ITO driver circuit through correspondence is delivered to control IC and detects changes in capacitance then, thereby confirms whether the position of finger manipulation and operation is arranged, thereby accomplishes this input action.

Shown in Figure 1 is capacitor induction type touch-screen sectional structure chart.The capacitor induction type touch-screen comprises four layers of compound glass substrate 1; The inside surface of glass substrate 1 and interlayer respectively scribble ITO coating 4; Between inside surface and the interlayer ITO coating 4 is insulation transparent glue 2, and outermost layer skim silicon soil glassivation is the mylar 3 that resistance to wears, and interlayer ITO coating is as the induction coating; Draw four electrodes on four angles, inside surface ITO coating 4 is that screen layer is to guarantee good working environment.

Shown in Figure 2 is existing ITO induction coating structure figure.ITO induction coating comprises top layer sense line 41 and bottom ITO sense line 42 and ITO driver circuit 401.Each independent top layer ITO sense line structure 41 all links with control IC through independent ITO driver circuit 401 respectively with bottom ITO sense line structure 42.

Now digital product in appearance, all there are two wide black surrounds in the right and left, this black surround is for attractive in appearance, the ITO driver circuit of covering side designs because the black surround width on both sides is too wide, the relative viewing area that tends to reduce whole digital product.

The utility model content

In order to solve the problems referred to above of prior art, the utility model provides a kind of narrow-frame touch panel, with the black surround width on minimizing digital product both sides, thus the relative viewing area of increase entire product.

The technical scheme that the utility model adopted is: a kind of narrow-frame touch panel; Comprise compound glass substrate and control IC; The inside surface of glass substrate and interlayer respectively scribble one deck ITO, and interlayer ITO coating is attached on the glass substrate as the induction coating; Comprise top layer sense line and bottom ITO sense line and ITO driver circuit; The adjacent shared ITO driver circuit of top layer ITO sense line of two row, the adjacent shared ITO driver circuit of bottom ITO sense line of two row, sense line links to each other with control IC through the ITO driver circuit.

Between touch-screen inside surface and the interlayer ITO coating 4 is insulation transparent glue, and outermost layer skim silicon soil glassivation is the mylar that resistance to wears.

Interlayer ITO coating is drawn four electrodes as the induction coating on four angles, inside surface ITO coating is a screen layer.

This patent structure is that two adjacent ITO induction line structures are connected with same ITO driver circuit, like this, the ITO line width of both sides will be reduced to original width half the, thereby reduce the black surround width on both sides, reach narrow limit designing requirement.

Description of drawings

Fig. 1 is a capacitor induction type touch-screen sectional structure chart.

Fig. 2 is existing ITO induction coating structure figure.

Fig. 3 is the utility model ITO induction coating structure figure.

The novel I TO of being shown in Figure 4 responds to the coating structure partial view.

Embodiment

Below will specify narrow-frame touch panel structure with reference to accompanying drawing according to the utility model embodiment.

The utility model narrow-frame touch panel basic structure and Fig. 1, Fig. 2 are similar to; Comprise four layers of compound glass substrate 1, the inside surface of glass substrate 1 and interlayer respectively scribble one deck ITO4, are insulation transparent glue 2 between inside surface and the interlayer ITO coating 4; Outermost layer skim silicon soil glassivation is the mylar 3 that resistance to wears; Interlayer ITO coating 4 is drawn four electrodes as the induction coating on four angles, inside surface ITO coating 4 is that screen layer is to guarantee good working environment.ITO induction coating is to be attached on the glass substrate.

Shown in Figure 3 is the ITO induction coating structure figure of the utility model.ITO induction coating comprises top layer sense line 41 and bottom ITO sense line 42 and ITO driver circuit 402.The adjacent bottom ITO sense line 42 shared ITO driver circuits 402 of top layer ITO sense line 41 a shared ITO driver circuit 402, two row that two row are adjacent, the ITO sense line links to each other with control IC through ITO driver circuit 402 then.

The utility model ITO of being shown in Figure 4 responds to the coating structure partial view; When finger position contacting I position shown in the figure, T4/T3 is a shared novel I TO driver circuit 402, and T4/T5 connects different novel I TO driver circuits 402; This moment, the T4 circuit can detect the variation of whole signals; T3, T5 circuit can detect the variation of part signal simultaneously, and through the transmission of T5 part signal and the transmission of whole signals of T4 and T3 part signal, control IC can change according to signal and cause change in current; Come current ratio is made accurate calculating, thereby calculate the particular location that touches.The width of circuit is generally little many than finger; In the time of other position of finger touch; In the collection of signal; Always collect the variation of the different signal that adjacent top layer ITO sense line structure 41 and adjacent bottom ITO sense line structure 42 sensed,, can judge the particular location of touch-control according to the power of these adjacent signals.

Connected mode and the algorithm of control IC of the utility model through changing the ITO driver circuit, can make the ITO line width of both sides be reduced to original width half the, thereby reduce the black surround width on both sides, realized the requirement of narrow-frame touch panel.

Although the embodiment of the utility model is open as above; But it is not limited only to listed utilization in instructions and the embodiment; It can be applied to the field of various suitable the utility model fully, for being familiar with those skilled in the art, can easily realize other modification; Therefore under the universal that does not deviate from claim and equivalency range and limited, the legend that the utility model is not limited to specific details and illustrates here and describe.

Claims

1. narrow-frame touch panel; Comprise compound glass substrate and control IC; The inside surface of compound glass substrate and interlayer respectively scribble one deck ITO, and interlayer ITO coating comprises top layer ITO sense line and bottom ITO sense line and ITO driver circuit as the induction coating; It is characterized in that; The adjacent shared ITO driver circuit of top layer ITO sense line of two row, the adjacent shared ITO driver circuit of bottom ITO sense line of two row, top layer links to each other with control IC through the ITO driver circuit with bottom ITO sense line.

2. narrow-frame touch panel according to claim 1 is characterized in that, is insulation transparent glue between touch-screen inside surface and the interlayer ITO coating, and outermost layer skim silicon soil glassivation is the mylar that resistance to wears.

3. narrow-frame touch panel according to claim 1 is characterized in that, interlayer ITO coating is drawn four electrodes as the induction coating on four angles, and inside surface ITO coating is a screen layer.