CN201066499Y - Touch control plate structure - Google Patents

Abstract

The utility model discloses a touchpad structure. The utility model comprises a first basement and a second basement. A light guide layer is arranged on one side of the first basement. The second basement bears a circuit and is provided with a first conductor, so an induction path is formed. A junction layer is adhered to at least one side of the first basement and arranged between the first basement and the light guide layer. At least one luminous element is arranged around the light guide board and is connected with the circuit of the second basement. The circuit of the second basement judges the touch of an object through receiving the coupling capacity change of the induction path which is caused when the touchpad is touched by the object. So the lighting of the luminous element is controlled.

Description

Touch pad structure

Technical field

The utility model relates to a kind of touch pad structure, refers to that especially a kind of vernier that provides moves device with user input or other application.

Background technology

Trackpad can provide electronic installation various input functions, and from simulating physical button or the scroll key recognition system to complex patterns or action, for example: the U.S. the 5th, 880,411 patents have disclosed the Trackpad of a kind of superior mobility or action recognition.

Yet, there are many application desires to show the image that the bottom surface presented of Trackpad, for example: this Trackpad can cover (or claiming to stack) in a LCD or cathode-ray tube (CRT) (Cathode Ray Tube, CRT) screen produces figure user interface (Graphical User Interface, effect GUI); Perhaps, other application may also want to show Trackpad the bottom surface to show static information, for example: the pattern of prompting advertising message or guiding user input; But foregoing prior art the or for example solution of this problem all also is weak.

In addition, owing to for example have capacitive touch control plate now: the U.S. the 5th, 457,289,4,806,709,4,733, No. 222 patent respectively has its unsolved shortcoming, for example: the U.S. the 5th, 457, No. 289 necessary pre-installed protective covers, the 4th, 806 of patent case, No. 709 patents need consistent conducting surface; Therefore, be necessary to be improved at the shortcoming of prior art.

The utility model content

Problem to be solved in the utility model provides a kind of touch pad structure, and fundamental purpose of the present utility model is to utilize touch pad structure to be subjected to object when contact to produce the variation of electrology characteristic and reach the effect that the control light source flickers.

Another purpose of the present utility model is the technology that utilization control light source flickers, and whether this touch pad structure of indication user is in the input flexibility ratio of upstate or its confining spectrum.

For achieving the above object, a kind of touch pad structure of the present utility model is formed at a plurality of substrates, is used to provide conduction object contact, and this touch pad structure mainly comprises folded the forming of following member layout stack of layers: one first substrate, and the one side is provided with an optical waveguide layer; And one second substrate, carry circuit and be provided with first conductor and form the induction track, at least one side in described first substrate is stained with knitting layer between described first substrate and optical waveguide layer, can establish at least one light-emitting component around the described light guide plate and connect the circuit of described second substrate, the circuit of described second substrate is judged the contact of this object and is therefore controlled flickering of described light-emitting component by receiving the coupling capacitance quantitative changeization that causes this induction track when touch pad structure is contacted by described object.

Compared with prior art, the utlity model has following advantage:

The utility model produces the variation of electrology characteristic in the time of can utilizing touch pad structure to be subjected to the object contact and reaches the effect that the control light source flickers, and the technology that can use the control light source to flicker, whether this touch pad structure of indication user is in the input flexibility ratio of upstate or its confining spectrum.

Description of drawings

Fig. 1 is a kind of feasible applications pattern diagram of touch pad structure of the present utility model;

Fig. 2 is the side schematic view of a kind of possible embodiments of touch pad structure of the present utility model;

Fig. 3 is a kind of feasible applications pattern diagram of touch pad structure of the present utility model;

Fig. 4 is a kind of feasible applications pattern diagram of touch pad structure of the present utility model;

Fig. 5 to Fig. 7 is a kind of feasible schematic layout pattern of first conductor of touch pad structure;

Fig. 8 to Figure 13 is the side schematic view of the another kind of possible embodiments of the utility model touch pad structure.

The main element symbol description is as follows:

1 induction system

11 touch pad structure

1,1A1 first substrate

1,1A2 second substrate

11A3 the 3rd substrate

11A4 the 4th substrate

The 11B sticker

11C first conductor

11C1X axle induction track

11C2Y axle induction track

11C ' second conductor

11D start layer

The 11E rhombus

The 11F insulator

The 11G coating

The 11H dielectric

The 11J optical waveguide layer

The 11L light-emitting component

11 ' knitting layer

12 processors

121 input blocks

122 arithmetic elements

123 vector processing units

Embodiment

For advantage of the present utility model, purpose, technical characterictic and effect, described in detail by the preferable case study on implementation of this case of following conjunction with figs..

With reference to Fig. 1 (can cooperate with reference to other each figure), display application touch pad structure 11 of the present utility model is as a kind of feasible applications pattern (display application is in touch-control sensing system 1 among the figure) of a touch-control sensing system 1 of its sensing unit.Aforementioned touch-control sensing system 1, mainly comprise: a touch pad structure 11, (for example: but finger, pointer stylus etc. have conductive object to object O to sensing (or claiming detecting, perception), cooperation is with reference to Fig. 3, Fig. 4, but not as the limit) near or touch (to call contact in the following text) and the generation electric capacitance change, that is, above-mentioned object can cause the capacitance variations at the set at least one induction track of aforementioned touch pad structure 11 (or claim induction figure sensor trace, with reference to following); One processor 12 connects aforementioned touch pad structure 11, by receiving contact that (or read is got) this electric capacitance change judges this object or/and its position on touch pad structure 11, but not as limit.

Above-mentioned processor 12 can further include: an input block 121, but the information of access aforementioned electric volume change; One arithmetic element 122 connects this input block 121, can be with the information digitalization of aforementioned electric volume change; One vector processing unit 123, connect this arithmetic element 122, obtain an object O and (cooperate by handling information (abbreviation digital information) after the described digitizing with reference to Fig. 3, Fig. 4) contact the positional information of this touch pad structure 11, and aforementioned location information can be for other device of collocation the utility model touch pad structure 11 or system (for example: computing machine, mobile phone, PDA etc. are or/and its display screen, but not as limit) utilize, for example as I/O (I/O) equipment of this device or system, described input block 121, arithmetic element 122, vector processing unit 123 also can have the effect that suppresses noise, gets rid of by touch pad structure 11 with this and is responded to and next noise.

In a feasible Implementation Modes, above-mentioned induction track can provide the abundant electric capacity aforementioned object O that is coupled, this induction track can be fine rule that conductor is formed (but not as limit) and is drawn on that described touch pad structure 11 is default to provide object O position contacting, cooperation is with reference to Fig. 2 (also can cooperate with reference to other each figure), wherein touch pad structure 11 mainly includes as the following member (but not as limit) that forms that stacks: one first substrate 11A1, at least end face printing opacity and insulation, a sticker 11B of available printing opacity and insulation adheres to other one first conductor 11C that scribbles light-permeable or/and light-permeable, one second substrate 11A2 of insulation.

The above-mentioned first conductor 11C generally can utilize a splash program or is deposited on the aforementioned second substrate 11A2 by a mode of printing; This first conductor 11C desire forms the layout of the induction track of printing opacity and then can reach by a photoresist and etching process, perhaps, the first conductor 11C also can be coated with a minus figure layer and be covered this second substrate 11A2 by splash or printing selectively, then, remove the pattern that minus figure layer can stay suitable printing opacity induction track.

The above-mentioned first substrate 11A1, the second substrate 11A2 can be mylar (polyester film), glass (glass), polycarbonate plastics (polycarbonate plastic), wheat and draw transparent material such as (Myler) (but not as limit), but not as limit (for example: the second substrate 11A2 also can be non-light transmissive material); The sticker 11B of aforementioned light-permeable, insulation for example can be: 3M#8142,467 etc., but not as limit; Light-permeable conductor 11C is for example: indium tin oxide target (Indium Tin Oxide, ITO), transparent conductivity plastics, silver, gold, aluminium alloy etc., but not as limit.Having this technical field Chang Shizhe should understand, because of there not being material is fully transparent, for increasing the transparency of sensing unit 11, feasible pattern for example has: first, substrate 11A1,11A2 and sticker 11B can select approximate or identical refractive index, and the refractive index by aforementioned minimization different component makes light reduce to minimum by distortion of materials effect (or claiming distortion action) and increases transparency; The second, the utilization U.S. the 5th, 880,411 described induction technologies, the tolerable high output impedance, therefore, the impedance factor of light-permeable conductor 11C can be higher relatively and steady, this impedance factor such as 300OMEGA./square (but not as limit), the transparency of raising light-permeable conductor 11C.

One start layer 11D, can stack in the side of the first substrate 11A1 or the second substrate 11A2 and for can be by seeing through the position that substrate 11A1,11A2 show, this start layer 11D be for example: a printing opacity or lighttight substrate, or an image display such as a liquid crystal display (Liquid Crystal Display, LCD) device, cathode-ray tube (CRT) (Cathode Ray Tube, CRT), (but not as limits) such as fingerprint identifiers, circuit board; In a feasible embodiment, start layer 11D also can omit fully, or the second substrate 11A2 also may be omitted and conductor 11C directly layout at start layer 11D; In addition, the first substrate 11A1, the second substrate 11A2 stack interchangeable and its performance that do not detract in position, in addition, as long as the first substrate 11A1 is insulation and sticks at the first conductor 11C certainly that then sticker 11B may be excluded or omit.Aforementioned what is called for example " sticks " certainly: the first substrate 11A1 of light-permeable, insulation is coated with transparent coatings.

Cooperation shows the possible embodiments of the touch-control sensing system 1 of one dimension with reference to Fig. 5 or Fig. 6 (can cooperate with reference to other each figure), not only can detect above-mentioned object O contact, also can detect the position of an aforementioned object O of direction of the induction orbit array of the first conductor 11C institute layout, the position of aforementioned object O can be by measuring this first conductor 11C institute layout the capacitance of induction orbit array calculate, and cover the place, position that the increase and decrease of the described induction track electric capacity that is coupled calculates object O according to object O, above-mentioned processor 12 can be estimated this object O along the moving of induction orbit array according to the continuous historical summary of the aforementioned object O of access position, and/maybe can integrate mechanism or the structure of inhibition by the noise of described touch pad structure 11 inductions.

The touch pad structure 11 of the touch-control sensing system 1 of one dimension includes a plurality of induction tracks along the axle of an appointment and equi-spaced apart is arranged and form array, therefore can reach the abundant discrimination power of ohject displacement (comprise the position or move etc.), each interval of responding to track can be designed to be convenient to above-mentioned object O and cover touch pad structure 11 and preset at least two induction tracks for arbitrary ad-hoc location of the induction zone of object O contact, the A/D conversion (also be the digitizing of described information, can reach by above-mentioned processor 12) that improves aforementioned induction track density or higher accuracy can increase touch-control sensing system 1 and calculate the resolution of aforementioned object O position.

As before describing at Fig. 2, but not in the Implementation Modes of limit, above-mentioned substrate 11A1 or/and 11A2 are coated with equably with the printing opacity first conductor 11C, and the formed induction orbit array of the aforementioned first conductor 11C is used a photoresist and etching process and finishes layout.Perhaps, but the figure layer that forms with minus photoresistance layout is coating this printing opacity first substrate 11A1 or the second substrate 11A2 also, for example the printing opacity first conductor 11C is deposited on the first substrate 11A1, the second substrate 11A2 with a splash program or by a method that applies earlier, removes minus photoresistance figure layer and stay the induction orbit array after light shield and etching.

Cooperation is with reference to Fig. 3, Fig. 5 (can cooperate with reference to other each figure), show that some induction orbit arrays are used for calculating a feasible Implementation Modes of the position of X-axis in touch pad structure 11 (being X-axis induction track 11C1 array), each is responded to track and can be printing opacity conductor, equi-spaced apart and assume diamond in shape and be located at the first substrate 11A1 (the second substrate 11A2 also is feasible pattern) of printing opacity, insulation as the array of 11E, can increase the scope of induction track and allow the pattern of rhomboid comprise the zone of no conductive material.

Cooperation is with reference to Fig. 3, Fig. 6 (can cooperate with reference to other each figure), be equivalent to the feasible Implementation Modes that some induction orbit arrays are used for calculating the position of Y-axis in touch pad structure 11 (being Y-axis induction track 11C2 array), each is responded to track 11C2 and can be printing opacity conductor, equi-spaced apart and assume diamond in shape and be located at the second substrate 11A2 of printing opacity, insulation as the array of 11E, can increase the scope of induction track and allow the pattern of rhomboid comprise the zone of no conductive material.

Cooperation is with reference to Fig. 4, Fig. 7 (can cooperate with reference to other each figure), it is the accompanying drawing (be integrated with Fig. 5, induction orbit array shown in Figure 6 also is a feasible pattern) of the two-dimentional touch-control sensing of a symbol system 1, this touch-control sensing system 1 can measure described object O existence or occur, for example along the above-mentioned object O position of two axis of orientations (for purposes of illustration, hereinafter to be referred as X-axis or Y-axis).

The existence of 11 two axles of the actual quantity of above-mentioned induction orbit array and touch pad structure (X-axis or Y-axis) will be depended on the induction zone of a particular system or device and the requirement of discrimination power, for reaching abundant position discrimination power, each interval of responding to track generally can be designed to be convenient to above-mentioned object O and cover at least two induction tracks in any precalculated position of each (X-axis, Y-axis) of induction zone.

Earlier figures 6 (can cooperate) with reference to other each figure, be touch pad structure 11 from the second substrate 11A2 with Y-axis induction orbit array in the above and X-axis induction track by the upward view of the first substrate 11A1 in the bottom, loading whole induction zone with at least one printing opacity first conductor 11C layer is fit to, this first printing opacity conductor 11C material, for example: indium tin oxide target (Indium Tin Oxide, ITO), gold, silver etc. (but not as limit).

In a feasible Implementation Modes, this Fig. 8 (can cooperate) with reference to other each figure, the touch pad structure 11 of two dimension shows stacks combination and can put upside down and its function that do not detract in order, the first substrate 11A1 of X-axis printing opacity, insulation is the end face for object O contact, the side of the aforementioned first substrate 11A1 is the X-axis induction track 11C1 of printing opacity, and thin thin, printing opacity, preferable adhesive insulator 11F separate X-axis induction track 11C1 and respond to track 11C2 with Y-axis; 11C1 is similar to X-axis induction track, and Y-axis induction track 11C2 is a side that is coated in the second substrate 11A2 of printing opacity, insulation.

Light-transparent substrate 11A1, the 11A2, sticker 11B insulator 11F and the X-axis that have been described in Fig. 2 are responded to the touch pad structure 11 that technology such as track 11C1 and Y-axis induction track 11C2 all are equally applicable to two dimension.

In a feasible Implementation Modes, can utilize isolated induction track of an electronic protection cover (describing among the figure) and the electrical noise of responding to from the electronic circuit of touch-control sensing system 1; In addition, cooperation is presented at the first substrate 11A1 of the touch pad structure 11 of two dimension with reference to Fig. 9, the second substrate 11A2 and the description person of Fig. 8 institute can be constructed, under the first substrate 11A1, other layer printing opacity insulator 11F is additional to another light-permeable second conductor 11C ' and one the 3rd substrate 11A3, be different from X-axis induction track 11C1 and Y-axis induction track 11C2 that the first conductor 11C is constituted, this second conductor 11C ' can be the even conductor layer of ground connection, therefore provide sensing cell 11 electronic protections, avoid being subjected to The noise or interference, and the examples of material that is suitably for conductor 11C ' and substrate 11A3 can no longer be described at this as light-permeable or the non-light transmissive material described in Fig. 2.

This second conductor 11C ' also promptly uses conductor 11C ' and substrate 11A3 to increase by a transparent floor also applicable to the touch pad structure 11 that is presented at the one dimension that this stacks among Fig. 2 or/and substrate 11A3 also can be inserted between substrate 11A2 and the start layer 11D.

Please refer to the feasible Implementation Modes of touch pad structure 11 that Figure 10 (can cooperate with reference to other each figure) shows the two dimension of a touch-control sensing system 1, one light-permeable substrate 11A1 can use the first conductor 11C of the bonding printing opacity of printing opacity insulator 11F, can be as shown at Fig. 2, the X-axis that this first conductor 11C comprises is responded to track 11C1 array layout and is coated in the side of the second substrate 11A2; But in the aforementioned second substrate 11A2 opposite side layout and scribble the included Y-axis of printing opacity conductor 11C induction track 11C2 array; One the 4th substrate 11A4 is with the bonding printing opacity first conductor 11C of printing opacity insulator 11F (can be Y induction track 11C2 array), this feasible Implementation Modes is as rhombus induction track 11C1 or/and induction track 11C2 when being arranged in the second substrate 11A2, owing to consider that can reduce the error second substrate 11A2 is that the first conductor 11C with printing opacity is coated on its both sides, because the second substrate 11A2 comprises two conductor X-axis induction track 11C1, Y-axis induction track 11C2 array alignment may occur in before etching/deposition with photoresist layout orbit array, can significantly simplify the pattern of X and Y induction track layout and aim at (or claiming to calibrate) error.

Substrate 11A1, the 11A2 of aforementioned printing opacity, insulation, 11A4 are also applicable to the touch pad structure 11 of two dimension or one dimension, in addition, with regard to electronic protection, the 4th substrate 11A4 of this printing opacity can be with replacing as the second conductor 11C ' as shown at Fig. 9 and the first substrate 11A1.

Increase above-mentioned induction track density, but the electric conductivity pointer that makes an apicule is capacitive coupling at least two induction tracks also, perhaps, the degree of accuracy (also be the digitizing of described information, can reach by above-mentioned processor 12) that increases the A/D conversion can promote the sensitivity that detecting is gone up the capacitance variations in a moment at induction track (conductor X-axis induction track 11C1 is or/and induction track 11C2 array).

Another the feasible Implementation Modes that shows the touch pad structure 11 of a touch-control sensing system 1 with reference to Figure 11 (can cooperate) with reference to other each figure, about each layer of two-dimentional sensing cell 11 stack roughly with aforementioned respectively scheme identical, wherein the side of the first substrate 11A1 is coated with the coating 11G of thick lines, tool impedance, light-permeable, can be used to extend effective contact range of the electric conductivity pointer of an apicule.

With reference to Figure 12 (can cooperate) with reference to other each figure, a feasible Implementation Modes that shows the touch pad structure 11 that stacks combination, the first substrate 11A1, the second substrate 11A2 is same as the aforementioned touch pad structure 11 of respectively scheming described two dimension, main difference is the first substrate 11A1, the second substrate 11A2 tool elasticity is or/and pliability, for example: mylar (polyester film) etc., but not as limit, be that light-permeable insulator 11F adheres to a printing opacity under the second substrate 11A2, flexible dielectric layer 11H, other layers insulator 11F adheres to aforementioned electric dielectric layer 11H respectively, the light-permeable first conductor 11C (X-axis induction track 11C1 is or/and Y-axis induction track 11C2), the 3rd substrate 11A3, the 3rd substrate 11A3 can utilize rigid material to make, described rigid material is for example: glass, polycarbonate plastics etc. are or/and its made circuit board, but not as limit, the second conductor 11C ' can be the even conductor layer of printing opacity of electronics ground connection.

Comprehensively above-mentioned, this first substrate 11A1 can be used as reflection layer, can set up an optical waveguide layer 11J (not describing among the figure) in the side of the described first substrate 11A1, and the second substrate 11A2 can be used as the circuit board that carries circuit or/and be provided with the first conductor 11C (X-axis induction track 11C1 is or/and Y-axis induction track 11C2), at least one side at the above-mentioned first substrate 11A1 can be stained with knitting layer 11 ' (for example: aforementioned sticker 11B or insulator 11F), wherein a knitting layer 11 ' between aforementioned first substrate 11A1 and optical waveguide layer 11J; In addition, around this optical waveguide layer 11J (for example the side of the first substrate 11A1 and/or the second substrate 11A2 or below etc.) can establish at least one light-emitting component 11L (describing among the figure) and connect circuit or the above-mentioned processor 12 of the described second substrate 11A2, be used for allowing the user press aforementioned optical waveguide layer 11J and force this first substrate 11A1 or/and knitting layer contacts the first conductor 11C (X-axis induction track 11C1 is or/and Y-axis induction track 11C2) and produces electric capacitance change, the circuit of the second substrate 11A2 or/and above-mentioned processor 12 can receive aforementioned electric volume change value and control flickering of this light-emitting component 11L, reflect or/and see through the light that described optical waveguide layer 11J reflects aforementioned light-emitting component 11L by the first substrate 11A1, and reach the position of prompting user this touch pad structure 11 and the effect of scope, and the circuit of the described second substrate 11A2 can be integrated in or separate with above-mentioned processor 12.

More than disclosed only be several specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.

Claims (8)

1. a touch pad structure is characterized in that, comprising: one first substrate, and the one side is established an optical waveguide layer; And one second substrate, carry circuit and be provided with first conductor, at least one side of described first substrate be stained with binding layer between described first substrate between optical waveguide layer, can establish at least one light-emitting component around this light guide plate and connect the circuit of described second substrate.

2. touch pad structure according to claim 1 is characterized in that described first conductor deposition is in described second substrate.

3. touch pad structure according to claim 1 is characterized in that, described first conductor directly layout on the start layer.

4. touch pad structure according to claim 1 is characterized in that, is a minus figure layer between described first conductor and second substrate.

5. touch pad structure according to claim 1 is characterized in that the induction track of described first conductor is positioned at least one side of second pedestal.

6. touch pad structure according to claim 1 is characterized in that, described second substrate circuit integrated has a processor.

7. touch pad structure according to claim 1 is characterized in that the circuit of described second substrate more is connected with a processor.

8. touch pad structure according to claim 1 is characterized in that the side and/or the below of described light-emitting component setting and described first baseline and/or second baseline.

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