CN104063094A - Touch screen with fingerprint recognition function, terminal device and fingerprint recognition method - Google Patents

Abstract

The invention discloses a touch screen with a fingerprint recognition function, a terminal device and a fingerprint recognition method. The touch screen comprises a transparent cover plate, a semiconductor film arranged on the transparent cover plate and a fingerprint sensor attached to the lower portion of the transparent cover plate, wherein semiconductor stripes are formed on the semiconductor film at intervals, the fingerprint sensor comprises a first fingerprint detection electrode and second fingerprint detection electrode, the first fingerprint detection electrode is arranged between detection electrodes of a position sensor of the touch screen and is parallel to the detection electrodes of the position sensor in a spaced mode. The touch screen can be used in a view area of the terminal device comprising the touch screen to carry out fingerprint recognition, and the detection electrodes of the fingerprint recognition sensor and the detection electrodes of the position sensor of the touch screen are made to be of the same structure.

Description

Touch screen, terminal device and the fingerprint identification method with fingerprint identification function

Technical field

The present invention relates to fingerprint identification technology field, relate in particular to a kind of touch screen, terminal device and fingerprint identification method with fingerprint identification function.

Background technology

In recent years, along with the development of memory technology, terminal device stores the capsule information such as a large amount of personal information as smart mobile phone, panel computer etc., and its security becomes even more important.How by forms such as password, figures, to realize the cryptoguard to its terminal device at present.

Yet for cipher modes such as password, figures, user need remember password and/or the figure set; In addition, in public, the danger that also exists password to reveal.And in order to improve security, often needing to increase the complexity of password and figure, the difficulty that this has further increased user's memory undoubtedly, causes conflicting between safe and easy-to-use.

Fingerprint is comprised of the rough lines of finger surface skin, is the unique feature of human body, and its complexity can be provided for enough features of identification.Fingerprint recognition is to utilize the feature of fingerprint uniqueness and stability to realize identification, and remembers without user.

Capacitance type fingerprint identification sensor forms conducting channel on base material substrate, and when finger contacts with sensor, the different capacitances that produce by the projection of fingerprint ridge and the depression of fingerprint paddy are surveyed fingerprint pattern.

When carrying out fingerprint recognition by fingerprint Identification sensor, people's finger print face and the distance between fingerprint Identification sensor can not be excessively far away, if hypertelorism is difficult to form fingerprint pattern accurately.

Summary of the invention

The invention provides a kind of touch screen with fingerprint identification function, can implement in the visible area of the terminal device that comprises it fingerprint recognition, and can make the detecting electrode of fingerprint Identification sensor and the detecting electrode of the position transducer in touch screen co-structured.

Additional aspect of the present invention and advantage will partly be set forth in the following description, and partly will from describe, become obviously, or can the acquistion by practice of the present invention.

One aspect of the present invention provides a kind of touch screen with fingerprint identification function, comprising: transparent cover plate; Semiconductive thin film, it is formed on described transparent cover plate, is formed with thereon the semiconductor striped of each interval; And, fingerprint sensor, it fits under described transparent cover plate, comprise the first fingerprint detection electrode and the second fingerprint detection electrode, wherein said the first fingerprint detection electrode is arranged between the detecting electrode in the position transducer of described touch screen, and arrange and compartment of terrain parallel with the detecting electrode of described position transducer.

In an embodiment, described the second fingerprint detection electrode is approximately perpendicular to the detecting electrode setting of described position transducer, and the detecting electrode of described position transducer is divided into two parts, between the detecting electrode of the described position transducer of every part and described the second fingerprint detection electrode, all leave gap; On described the second fingerprint detection electrode, be coated with insulation film; On described insulation film, be formed with conductive film, so that the detecting electrode of position transducer described in two parts is electrically connected to.

In another embodiment, described the first fingerprint detection electrode is separately positioned between the detecting electrode of described position transducer and comprises: described the first fingerprint detection electrode is separately positioned between the detecting electrode of described position transducer partly.

In another embodiment, when described the first fingerprint detection electrode between the detecting electrode in the position transducer that is arranged at described touch screen is many, described many first fingerprint detection electrodes uniformly-spaced arrange each other, and its spacing scope is 40 μ m-60 μ m; The width range of described the first fingerprint detection electrode is 20 μ m-45 μ m; The width range of described the second fingerprint detection electrode is 20 μ m-45 μ m.

In another embodiment, this touch screen with fingerprint identification function also comprises: treatment circuit, and described treatment circuit comprises: the first on-off circuit; Second switch circuit; The 3rd on-off circuit; Fingerprint recognition circuit submodule, it is electrically connected to described fingerprint sensor by described the first on-off circuit; Location recognition circuit submodule, it is electrically connected to described position transducer by described second switch circuit; Charging circuit submodule, it is electrically connected to described location recognition circuit submodule by described the 3rd on-off circuit, to launch radio frequency high tension electric current by described location recognition circuit submodule to described position transducer; And, signal is processed submodule, it is electrically connected to described fingerprint recognition circuit submodule, described location recognition circuit submodule, described charging circuit submodule and described position transducer respectively, to control being used alternatingly of described position transducer and described fingerprint Identification sensor.

In another embodiment, described charging circuit submodule comprises: radio-frequency signal generator and stepup transformer.

In another embodiment, this touch screen with fingerprint identification function also comprises: protective seam, it is formed on described semiconductive thin film.

In another embodiment, the AF film of described protective seam for forming by spraying or thermal evaporation.

In another embodiment, the semiconductor striped that is formed with each interval on described semiconductive thin film comprises: the semiconductor striped that is formed with each interval on the subregion of described semiconductive thin film.

In another embodiment, described semiconductor film material comprises: semi-conducting polymer, indium tin oxide, zinc tin oxide.

In another embodiment, described semiconductive thin film is made by evaporating deposition technique, and described evaporating deposition technique comprises: electron beam evaporation, magnetron sputtering.

In another embodiment, this touch screen with fingerprint identification function also comprises: image processing module, and for splicing the pattern of described fingerprint Identification sensor scanning.

The present invention provides a kind of terminal device on the other hand, comprising: above-mentioned any has the touch screen of fingerprint identification function.

Further aspect of the present invention provides a kind of and has been applied to above-mentioned any and has the fingerprint identification method of the touch screen of fingerprint identification function, comprise: when needs carry out fingerprint recognition, if sense user's finger touch signal at ad-hoc location, send radio frequency high tension electric current to the detecting electrode of the position transducer of described touch screen; Described radio frequency high tension electric current is applied to semiconductive thin film; And, by described user's finger and contacting of described semiconductive thin film, described radio frequency high tension electric current is incided in described user's finger.

In an embodiment, this fingerprint identification method also comprises: when needs carry out fingerprint recognition, if sense user's finger touch signal at ad-hoc location, close the function of described position transducer.

In another embodiment, this fingerprint identification method also comprises: start the function of the fingerprint Identification sensor of described touch screen, described user's finger is carried out to fingerprint recognition.

In another embodiment, described radio frequency high tension electric current is applied to semiconductive thin film and comprises: the mode of charging by coupling, is applied to described radio frequency high tension electric current in described semiconductive thin film.

The touch screen with fingerprint identification function of the embodiment of the present invention, by the position transducer compatible design in the terminal device with touch function, can realize in the visible area of terminal device fingerprint recognition region is provided, and for example by Software for Design, in relevant position, visible area, point out the region of this fingerprint recognition of user, user-friendly; In addition,, when it is applied to terminal device, without destroying the integrated transparent cover plate of terminal device, guaranteed the original appearance of terminal device structure.

Accompanying drawing explanation

By describe its example embodiment in detail with reference to accompanying drawing, above-mentioned and further feature of the present invention and advantage will become more obvious.

Fig. 1 is the structural representation of the touch screen with fingerprint identification function of the embodiment of the present invention.

Fig. 2 is the structural representation of the semiconductive thin film of the embodiment of the present invention.

Fig. 3 is the structural representation of the fingerprint recognition processing module of the embodiment of the present invention.

Fig. 4 is the structural representation of position transducer of the terminal device of prior art.

Fig. 5 is transmitting thin layer and the reception thin layer schematic diagram of the position transducer of prior art.

Fig. 6 is the structural representation of the fingerprint Identification sensor of the embodiment of the present invention.

Fig. 7 is the manufacture craft schematic diagram of the fingerprint detection emitting electrode of the embodiment of the present invention.

Fig. 8 is the fingerprint pattern schematic diagram that fingerprint Identification sensor scans.

Embodiment

Referring now to accompanying drawing, example embodiment is more fully described.Yet example embodiment can be implemented in a variety of forms, and should not be understood to be limited to embodiment set forth herein; On the contrary, provide these embodiments to make the present invention by comprehensive and complete, and the design of example embodiment is conveyed to those skilled in the art all sidedly.Identical in the drawings Reference numeral represents same or similar structure.

Described feature or structure can be combined in one or more embodiments in any suitable manner.In the following description, thus provide many details to provide fully understanding embodiments of the present invention.Yet, one of ordinary skill in the art would recognize that there is no one or more in described specific detail, or adopt other method, constituent element etc., also can put into practice technical scheme of the present invention.In other cases, be not shown specifically or describe known configurations or operation to avoid fuzzy the present invention.

Fig. 1 is the structural representation of the touch screen with fingerprint identification function of the embodiment of the present invention.As shown in Figure 1, this touch screen 1 comprises: transparent cover plate 11, semiconductive thin film 12 and fingerprint Identification sensor 13.

Semiconductive thin film 12 is formed on transparent cover plate 11, can be positioned on the whole or part of semiconductive thin film 12, preferably partially, for example as shown in Figure 2 in the center section of semiconductive thin film 12, by technology such as photoetching, form the striped 121 of each interval, be interconnected when the coupling charging avoiding.

The material of semiconductive thin film 12 comprises: semi-conducting polymer, and indium tin oxide, and zinc tin oxide etc.

Semiconductive thin film 12 is the zinc tin oxide film for being prepared from by vacuum deposition method for example, and concrete composition is by zinc paste (ZnO) and tin ash (SnO ₂) mixing formation.Evaporating deposition technique comprises: electron beam evaporation, magnetron sputtering etc.

Utilize the semiconductor property of material, when it not being coupled to charging, the electric conductivity of semiconductive thin film is tending towards insulation, thereby does not affect the operation of finger to the position transducer under terminal device transparent cover plate; When semiconductor layer is applied in radio frequency high tension charging, the electric conductivity of semiconductive thin film is tending towards conductor, can be to the small radio-frequency current signal of finger input thereby charge by coupling.The width that semiconductive thin film 12 is lithographically striped 121 parts of each interval is adapted to the width of human finger haply, thereby for pointing the region that is provided for fingerprint recognition, for example by software, to being lithographically the region of bar shaped, showing that fingerprint recognition region is prompted to user, but the present invention is not as limit.

The part of semiconductive thin film 12 being lithographically to the striped 121 of each interval, is on the one hand whole conducting during for fear of coupling charging; Be for charging to finger is local on the other hand, and the fingerprint Identification sensor 13 of finger remainder correspondence below carry out fingerprint recognition.

In addition,, in order to protect semiconductive thin film 12, on semiconductive thin film 12, can also form layer protective layer 14.Protective seam 14 for example forms by spraying technology or thermal evaporation techniques; the material of protective seam is AF film; AF film also claims anti-fingerprint film; it is a kind of silicon fluoride long-chain compound; because anti-fingerprint film is a kind of material having compared with low surface tension; therefore waterproof, grease proofing and easy dirt-removing power are splendid, also have crocking resistance simultaneously, can play the effect of protection semiconductive thin film.

The touch screen with fingerprint identification function 1 of the embodiment of the present invention can be applicable to have in the terminal device of touch controllable function, such as smart mobile phone, panel computer etc.In order to make to have the fingerprint Identification sensor 13 and position transducer (TP sensor) collaborative work in the touch screen 1 of fingerprint identification function, this touch screen 1 also comprises: fingerprint recognition processing module 15.

Fig. 3 is the structural representation of the fingerprint recognition processing module of the embodiment of the present invention.As shown in Figure 3, fingerprint recognition processing module 15 comprises: signal is processed submodule 151, fingerprint recognition circuit submodule 152, location recognition circuit submodule 153 and charging circuit submodule 154, and wherein charging circuit submodule 154 further comprises radio-frequency signal generator and stepup transformer.

Signal is processed submodule 151 and is electrically connected to fingerprint recognition circuit submodule 152, location recognition circuit submodule 153 and charging circuit submodule 154 respectively.

Signal is processed submodule 151 and is gone back electrically connecting position sensor and fingerprint Identification sensor 13, wherein fingerprint Identification sensor 13 is arranged among position transducer, both share a structure, will introduce in detail after the compatible design of fingerprint Identification sensor 13 and position transducer.

In addition, fingerprint recognition processing module 15 also comprises: the first on-off circuit 155, second switch circuit 156 and the 3rd on-off circuit 157.

Wherein, fingerprint recognition circuit submodule 152 is electrically connected to fingerprint Identification sensor 13 by the first on-off circuit 155; Location recognition circuit submodule 153 is electrically connected to position transducer by second switch circuit 156; Charging circuit submodule 154 is electrically connected to location recognition circuit submodule 153 by the 3rd on-off circuit 157.

The principle of work of fingerprint recognition processing module 15 is as follows:

Step 1, when needs carry out fingerprint recognition, for example by software prompt user, carry out fingerprint recognition, this prompting also comprises demonstration fingerprint recognition region further, when position transducer detects finger touch signal, if for example specified specific fingerprint recognition region by software, when position transducer during touch signal, feeds back to signal by location recognition circuit submodule 153 and processes submodule 151 to finger at this specific fingerprint recognition regionally detecting;

Step 2, when signal processing submodule 151 receives the finger touch signal of location recognition circuit submodule 153 feedbacks, by second switch circuit 156 off-position identification circuit submodules 153, thus the position detecting element in off-position sensor, and position detecting element comprises; Position probing emitting electrode (TP Tx) and position probing receiving electrode (TP Rx);

Step 3, signal is processed the radio-frequency signal generator 1541 that submodule 151 starts in charging circuit submodule 154, and be communicated with charging circuit submodule 154 and location recognition circuit submodule 153 by the 3rd on-off circuit 157, by radio frequency high tension (scope: 50V-200V) electric current is transported to the TP Tx of appointment by location recognition circuit submodule 153, TP Tx is to the striped 121 coupling chargings of the each interval on the semiconductive thin film 12 on transparent cover plate 11 surfaces, thereby radio frequency little electric current input finger is strengthened to the penetration of finger electric field line to transparent cover plate 11, wherein the TP Tx of appointment for example comprises and TP Tx corresponding on striped 121 positions,

Step 4, signal is processed submodule 151 and is communicated with fingerprint recognition circuit submodule 152 and fingerprint Identification sensor 13 by the first on-off circuit 156, thereby starts fingerprint Identification sensor 13;

Step 5, complete after fingerprint recognition, signal is processed submodule 151 and by the first on-off circuit 155 and the 3rd on-off circuit 157, is closed being electrically connected to of fingerprint recognition circuit submodule 152 and fingerprint Identification sensor 13 respectively, and being electrically connected to of charging circuit submodule 154 and location recognition circuit submodule 153, and by second switch circuit 156 electrically connecting position identification circuit submodule 153 and position transducers, reopen the position detecting element in position transducer, and then reopen position sensor function.

Utilize the semiconductor property of semiconductive thin film 12 materials, when it not being coupled to charging, the electric conductivity of semiconductive thin film 12 is tending towards insulation, thereby does not affect the operation of finger to transparent cover plate 11 upper/lower positions sensors; When semiconductor layer is applied in radio frequency high tension charging, the electric conductivity of semiconductive thin film is tending towards conductor.By coupling, charge and can, to the small radio-frequency current signal of finger input, thereby improve, point the penetration of electric field to transparent cover plate 11.

Below further set forth the embodiment of the present invention fingerprint Identification sensor 13 and terminal device in the compatibling problem of position transducer.

Fig. 4 is the structural representation of position transducer of the terminal device of prior art.As shown in Figure 4, the position transducer of existing terminal device comprises: transparent cover plate, the transmitting thin layer being comprised of many TP Tx and the reception thin layer being comprised of many TP Rx.

When the touch screen with fingerprint identification function 1 of the embodiment of the present invention is placed in terminal device, transparent cover plate 11 can be for example the transparent cover plate of this terminal device, and this transparent cover plate is for example tempered glass, the base materials such as sapphire glass or PMMA.

The part that is lithographically bar shaped in semiconductive thin film 12 can be positioned at the visible area of terminal device, also can be positioned at the non-visible area of terminal device, is wherein preferably placed at the visible area of terminal device.

Fig. 5 is transmitting thin layer and the reception thin layer schematic diagram of the position transducer of prior art.Wherein (a) is transmitting thin layer schematic diagram, and (b) for receiving thin layer schematic diagram, as shown in Figure 5, many TP Tx parallel interval are arranged, many similarly parallel interval arrangements of TP Rx, and the direction of TP Tx and TP Rx is roughly vertical setting.

Fig. 6 is the structural representation of the fingerprint Identification sensor of the embodiment of the present invention.The fingerprint Identification sensor 13 of the embodiment of the present invention comprises fingerprint detection element, and fingerprint detection element comprises: fingerprint detection emitting electrode (FP Tx) and fingerprint detection receiving electrode (FP Rx).Fingerprint detection element is for example made by tin indium oxide (ITO) material.

By interting FP Tx between the TP Tx all or part of, realize the compatibility of fingerprint Identification sensor and position transducer, preferably interspersed FP Tx between the TP Tx of part.Roughly to be carved with the region of striped 121 of each interval corresponding with semiconductive thin film 12 glazings wherein to intert the part of FP Tx.

As shown in Figure 6, for example, between two adjacent TP Tx, intert at least one FP Tx, when inserting many FP Tx, many FP Tx are parallel and equally spaced arrange, and spacing range is 40 μ m-60 μ m.FP Rx arranges perpendicular to TP Tx and FP Tx haply.The width range of FP Tx and FP Rx is 20 μ m-45 μ m.

Fig. 7 is the manufacture craft schematic diagram of the fingerprint detection emitting electrode of the embodiment of the present invention.

First by technology such as photoetching, the cabling of TP Tx and FP Rx is made to the pattern as shown in Fig. 7 (a).Wherein, TP Tx is divided into upper and lower two sections by FP Rx, and all leaves gap g between every section of TP Tx and FP Rx, does not produce and is electrically connected to guaranteeing between upper and lower TP Tx and FP Rx.

Afterwards, as shown in Fig. 7 (b), print OCA glue or PSA glue insulation film on FP Rx, in order to reach better insulation effect, the width of insulation film can be wider than the width of FP Rx, but the present invention is not as limit.

Finally, as shown in Fig. 7 (c), on insulation film, adopt again vacuum magnetic-control sputtering to plate continuously for example molybdenum aluminium molybdenum (MoAlMo) metallic film of conductive film, and be lithographically linear, to connect the TP Tx of upper and lower two sections, thereby realize the connection between upper and lower two sections of TP Tx, and have the insulation between TP Tx and FPRx concurrently.

Fig. 8 is the fingerprint pattern schematic diagram that fingerprint Identification sensor scans.Wherein, the fingerprint pattern that Fig. 8 (a) scans for fingerprint Identification sensor of the prior art, in fingerprint Identification sensor 13 due to the embodiment of the present invention, TP Tx lines in FP Tx, have been interted, so the fingerprint pattern scanning is as shown in Fig. 8 (b), therefore the touch screen 1 with fingerprint identification function of the present invention also comprises image processing module, for example by software mode, the pattern scanning by fingerprint Identification sensor 13 is spliced, to form the fingerprint pattern as shown in Fig. 8 (b).

Although the fingerprint pattern as shown in Fig. 8 (b) has lacked part fingerprint pattern, fingerprint recognition is to rely on unique point to choose rear coupling, so as long as retained enough fingerprint characteristic dot informations, can complete the identification to fingerprint equally.

The touch screen with fingerprint identification function of the embodiment of the present invention, by the position transducer compatible design in the terminal device with touch function, can realize in the visible area of terminal device fingerprint recognition region is provided, and for example by Software for Design, in relevant position, visible area, point out the region of this fingerprint recognition of user, user-friendly; In addition,, when it is applied to terminal device, without destroying the integrated transparent cover plate of terminal device, guaranteed the original appearance of terminal device structure.

Below illustrate particularly and described illustrative embodiments of the present invention.Should be appreciated that, the invention is not restricted to disclosed embodiment, on the contrary, the invention is intended to contain the various modifications and the equivalent replacement that comprise within the scope of the appended claims.

Claims (17)

1. a touch screen with fingerprint identification function, is characterized in that, comprising:

Transparent cover plate;

Semiconductive thin film, it is formed on described transparent cover plate, is formed with thereon the semiconductor striped of each interval; And,

Fingerprint sensor, it fits under described transparent cover plate, comprise the first fingerprint detection electrode and the second fingerprint detection electrode, wherein said the first fingerprint detection electrode is arranged between the detecting electrode in the position transducer of described touch screen, and arrange and compartment of terrain parallel with the detecting electrode of described position transducer.

2. the touch screen with fingerprint identification function according to claim 2, it is characterized in that, described the second fingerprint detection electrode is approximately perpendicular to the detecting electrode setting of described position transducer, and the detecting electrode of described position transducer is divided into two parts, between the detecting electrode of the described position transducer of every part and described the second fingerprint detection electrode, all leave gap; On described the second fingerprint detection electrode, be coated with insulation film; On described insulation film, be formed with conductive film, so that the detecting electrode of position transducer described in two parts is electrically connected to.

3. the touch screen with fingerprint identification function according to claim 3, it is characterized in that, described the first fingerprint detection electrode is separately positioned between the detecting electrode of described position transducer and comprises: described the first fingerprint detection electrode is separately positioned between the detecting electrode of described position transducer partly.

4. the touch screen with fingerprint identification function according to claim 1 and 2, it is characterized in that, when described the first fingerprint detection electrode between the detecting electrode in the position transducer that is arranged at described touch screen is many, described many first fingerprint detection electrodes uniformly-spaced arrange each other, and its spacing scope is 40 μ m-60 μ m; The width range of described the first fingerprint detection electrode is 20 μ m-45 μ m; The width range of described the second fingerprint detection electrode is 20 μ m-45 μ m.

5. the touch screen with fingerprint identification function according to claim 1 and 2, is characterized in that, also comprises: treatment circuit, and described treatment circuit comprises:

The first on-off circuit;

Second switch circuit;

The 3rd on-off circuit;

Fingerprint recognition circuit submodule, it is electrically connected to described fingerprint sensor by described the first on-off circuit;

Location recognition circuit submodule, it is electrically connected to described position transducer by described second switch circuit;

Charging circuit submodule, it is electrically connected to described location recognition circuit submodule by described the 3rd on-off circuit, to launch radio frequency high tension electric current by described location recognition circuit submodule to described position transducer; And,

Signal is processed submodule, it is electrically connected to described fingerprint recognition circuit submodule, described location recognition circuit submodule, described charging circuit submodule and described position transducer respectively, to control being used alternatingly of described position transducer and described fingerprint Identification sensor.

6. the touch screen with fingerprint identification function according to claim 5, is characterized in that, described charging circuit submodule comprises: radio-frequency signal generator and stepup transformer.

7. the touch screen with fingerprint identification function according to claim 1 and 2, is characterized in that, also comprises: protective seam, it is formed on described semiconductive thin film.

8. the touch screen with fingerprint identification function according to claim 7, is characterized in that, the AF film of described protective seam for forming by spraying or thermal evaporation.

9. the touch screen with fingerprint identification function according to claim 1 and 2, it is characterized in that, the semiconductor striped that is formed with each interval on described semiconductive thin film comprises: the semiconductor striped that is formed with each interval on the subregion of described semiconductive thin film.

10. the touch screen with fingerprint identification function according to claim 1 and 2, is characterized in that, described semiconductor film material comprises: semi-conducting polymer, indium tin oxide, zinc tin oxide.

11. touch screens with fingerprint identification function according to claim 1 and 2, is characterized in that, described semiconductive thin film is made by evaporating deposition technique, and described evaporating deposition technique comprises: electron beam evaporation, magnetron sputtering.

12. touch screens with fingerprint identification function according to claim 1 and 2, is characterized in that, also comprise: image processing module, and for splicing the pattern of described fingerprint Identification sensor scanning.

13. 1 kinds of terminal devices, is characterized in that, comprise according to the touch screen with fingerprint identification function described in claim 1-12 any one.

14. 1 kinds are applied to, according to the fingerprint identification method of the touch screen with fingerprint identification function described in claim 1-12 any one, it is characterized in that, comprise:

When needs carry out fingerprint recognition, if sense user's finger touch signal at ad-hoc location, send radio frequency high tension electric current to the detecting electrode of the position transducer of described touch screen;

Described radio frequency high tension electric current is applied to semiconductive thin film; And,

By described user's finger and contacting of described semiconductive thin film, described radio frequency high tension electric current is incided in described user's finger.

15. fingerprint identification methods according to claim 14, is characterized in that, also comprise: when needs carry out fingerprint recognition, if sense user's finger touch signal at ad-hoc location, close the function of described position transducer.

16. fingerprint identification methods according to claim 14, is characterized in that, also comprise: start the function of the fingerprint Identification sensor of described touch screen, described user's finger is carried out to fingerprint recognition.

17. fingerprint identification methods according to claim 14, is characterized in that, described radio frequency high tension electric current is applied to semiconductive thin film and comprises: the mode of charging by coupling, is applied to described radio frequency high tension electric current in described semiconductive thin film.