CN104035626A - Fingerprint recognition method, touch screen with fingerprint recognition function and terminal device - Google Patents
Fingerprint recognition method, touch screen with fingerprint recognition function and terminal device Download PDFInfo
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- CN104035626A CN104035626A CN201410313008.3A CN201410313008A CN104035626A CN 104035626 A CN104035626 A CN 104035626A CN 201410313008 A CN201410313008 A CN 201410313008A CN 104035626 A CN104035626 A CN 104035626A
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Abstract
The invention discloses a fingerprint recognition method, a touch screen with a fingerprint recognition function and a terminal device. The touch screen with the fingerprint recognition function comprises a transparent cover plate, a position sensor and a fingerprint recognition sensor, wherein the position sensor is attached to the lower side of the transparent cover plate and comprises a virtual hollowed-out region; the fingerprint recognition sensor is formed on the transparent cover plate, and the fingerprint recognition sensor and the virtual hollowed-out region are symmetrically distributed with respect to the transparent cover plate. According to the touch screen with the fingerprint recognition function, through compatibility design of the position sensor in the terminal device with the touch function, a fingerprint recognition region can be provided in a visible region of the terminal device.
Description
Technical field
The present invention relates to technical field of biometric identification, the terminal device that relates in particular to a kind of fingerprint identification method, there is the touch screen of fingerprint identification function and comprise it.
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 fingerprint recognition in the visible area of the terminal device that comprises it.
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; Position transducer, it fits under described transparent cover plate, comprises a virtual hollow out region; And, fingerprint Identification sensor, it is formed on described transparent cover plate, and symmetrical about described transparent cover plate with described virtual hollow out region.
In an embodiment, this touch screen also comprises: treatment circuit, and described treatment circuit comprises: fingerprint recognition circuit submodule; And signal is processed submodule, it is electrically connected to described fingerprint recognition circuit submodule, and the mode of operation of described fingerprint Identification sensor is set by described fingerprint recognition circuit submodule.
In another embodiment, described mode of operation comprises: fingerprint recognition pattern and location recognition pattern; Wherein when described fingerprint Identification sensor is set to described fingerprint recognition pattern, shown in fingerprint Identification sensor be used for carrying out fingerprint recognition; When described fingerprint Identification sensor is set to described location recognition pattern, for feeding back the positional information in finger touches region.
In another embodiment, the electrode that is arranged in the position transducer in described virtual hollow out region is not used in the positional information detection in described virtual hollow out region.
In another embodiment, this touch screen also comprises: protective seam, it is formed on described fingerprint Identification sensor.
In another embodiment, the material of described protective seam comprises: diamond-like-carbon or UV glue.
In another embodiment, this touch screen also comprises: packed layer, it is positioned at described fingerprint Identification sensor both sides, with the drop that described fingerprint Identification sensor both sides are formed, fills.
In another embodiment, the material of described packed layer comprises: silicon dioxide.
In another embodiment, the screen of described touch screen comprises: He Fei visible area, visible area; Wherein said visible area comprises: fingerprint recognition prompting region, it is roughly corresponding to described fingerprint Identification sensor.
The present invention discloses a kind of terminal device on the other hand, comprises that above-mentioned any has the touch screen of fingerprint identification function.
Further aspect of the present invention discloses a kind of fingerprint identification method of the terminal device for fingerprint identification function, described terminal device comprises fingerprint sensor, this fingerprint identification method comprises: if need to carry out fingerprint recognition, described fingerprint Identification sensor is for fingerprint recognition; Otherwise described fingerprint sensor, when sensing the finger touches of its correspondence position, feeds back the positional information of finger presses.
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 cross sectional representation of the touch screen with fingerprint identification function of the embodiment of the present invention.
Fig. 2 is the structural representation of the fingerprint Identification sensor of example in the embodiment of the present invention.
Fig. 3 is the structural drawing of the position transducer of example in the embodiment of the present invention.
Fig. 4 is the structural representation of the fingerprint recognition processing module of the embodiment of the present invention.
Fig. 5 is the schematic diagram of the terminal device of the touch screen that has fingerprint identification function comprising of the embodiment of the present invention.
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 cross sectional representation of the touch screen with fingerprint identification function of the embodiment of the present invention.As shown in Figure 1, this touch screen comprises: transparent cover plate 11 and fingerprint Identification sensor 12.
Fingerprint Identification sensor 12 is for example capacitance type fingerprint identification sensor.
Fingerprint Identification sensor 12 is formed on transparent cover plate 11, and the structure example of fingerprint Identification sensor 12 is as being as shown in Fig. 2.Fig. 2 is the structural representation of the fingerprint Identification sensor of example in the embodiment of the present invention.As shown in Figure 2, fingerprint Identification sensor 12 comprises: the first conductive layer 121 and the second conductive layer 122.
Wherein, the first conductive layer 121 comprises the first electrode 1211 that a plurality of mutually insulateds distribute; The second conductive layer 122, is positioned under the first conductive layer 121, comprises the second electrode 1221 that a plurality of mutually insulateds distribute; And between the first electrode 1211 and the second electrode 1221, insulation arranges.
It should be noted that; fingerprint Identification sensor shown in Fig. 2 is only the structure of an exemplary fingerprint Identification sensor; anyly can substantially realize function of the present invention, and the fingerprint Identification sensor structure that can reach essentially identical technique effect all should belong to protection scope of the present invention.
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.Fingerprint Identification sensor is placed on the cover plate of terminal device, can dwindles the distance that finger contacts with fingerprint Identification sensor, promote the degree of accuracy of fingerprint recognition.
In order to make to have position transducer (TP sensor) collaborative work in fingerprint Identification sensor 13 in the touch screen 1 of fingerprint identification function and touch screen 1, between fingerprint Identification sensor 13 and position transducer, need to carry out collaborative design.
Continuation is with reference to figure 1, and as shown in Figure 1, the position transducer 13 of touch screen 1 is positioned at the below of transparent cover plate 11, is positioned at side transparent cover plate 11, contrary with fingerprint Identification sensor 12.
Position transducer 13 comprises a virtual hollow out region 14, virtual hollow out region 14 is that fingerprint Identification sensor 12 is about the symmetrical region of transparent cover plate 11, they be that virtual hollow out region 14 is all identical with shape, the size of fingerprint Identification sensor 12, and its position and fingerprint Identification sensor 12 are about transparent cover plate 11 symmetries.
Above-mentioned virtual hollow out refer to position transducer 13 in this region not by real hollowing out, and be only that the position transducer 13 that is positioned at this region can not be worked, the electrode that is arranged in the position transducer 13 in this region is not used in the positional information detection in this region, and concrete grammar will describe in detail hereinafter.
The structure example of position transducer 13 is as being as shown in Fig. 3.Fig. 3 is the structural drawing of the position transducer of example in the embodiment of the present invention.As shown in Figure 3, the position transducer 13 adopting in the touch screen 1 of the embodiment of the present invention comprises: the receiving layer being comprised of emitting electrode (TP Tx) emission layer forming and the receiving electrode of many TP (TP Rx) of many TP.
It should be noted that equally; position transducer shown in Fig. 3 is only the structure of an exemplary position transducer; anyly can substantially realize function of the present invention, and the position transducer structure that can reach essentially identical technique effect all should belong to protection scope of the present invention.
The lead-in wire of fingerprint Identification sensor 12 for example by arranging the mode of conductive through hole on transparent cover plate, to go between and be electrically connected to conductive through hole, the lead-in wire again transparent cover plate below being electrically connected to conductive through hole interts in the lead-in wire of position transducer 13, to be electrically connected to the external circuit of fingerprint Identification sensor 12.
In certain embodiments, on transparent cover plate 11, be formed with a plurality of through holes, in a plurality of through holes, be respectively arranged with conductive material, as metal or its combinations such as silver, copper, gold, aluminium.
The shape circular of each through hole, due in its processing procedure, if the conference of crossing that the diameter of through hole is made causes substrate panel easily to rupture, and if the too small fill process of cannot realizing of diameter, therefore the diameter range of through hole is preferably at 20 μ m-45 μ m, but the present invention is not as limit.When through hole is polygon, its diameter refers to its external diameter of a circle.
Form the manufacturing process of a plurality of through holes on transparent cover plate 11 and comprise radium-shine etching technique, chemical etch technique or deep reactive ion etch technology.
In order to make collaborative work between fingerprint Identification sensor 12 and position transducer 13, this touch screen 1 also comprises: fingerprint recognition processing module 17.
Fig. 4 is the structural representation of the fingerprint recognition processing module of the embodiment of the present invention.As shown in Figure 4, fingerprint recognition processing module 17 comprises: signal is processed submodule 171 and fingerprint recognition circuit submodule 172.
Signal is processed submodule 171 and is electrically connected to fingerprint recognition circuit submodule 172; Fingerprint recognition circuit submodule 172 is electrically connected to fingerprint Identification sensor 12.
The principle of work of fingerprint recognition processing module 17 is as follows:
Signal is processed submodule 171 mode of operation of fingerprint Identification sensor 12 is divided into fingerprint recognition pattern (FP pattern) and location recognition pattern (TP pattern).
When needs carry out fingerprint recognition, signal processing submodule 171 is set to FP pattern by the mode of operation of fingerprint recognition circuit submodule 172 fingerprint Identification sensors 12, under this pattern, fingerprint Identification sensor 12 possesses fingerprint image scan function, for the image information of collecting user fingerprints, determine the essential characteristics of user fingerprints.
And when carrying out fingerprint recognition, signal processing submodule 171 is set to TP pattern by the mode of operation of fingerprint recognition circuit submodule 172 fingerprint Identification sensors 12, existing in this pattern, fingerprint Identification sensor 12 possesses the function of position transducer 13, when sense at fingerprint Identification sensor 12 correspondence positions finger touches time, the positional information of feedback finger presses, to realize the function of position transducer.For example, fingerprint Identification sensor 12 is experienced the residing position of fingerprint ridge, and feeds back this positional information.The emitting electrode and the receiving electrode that in position transducer 13, are positioned at virtual hollow out region carry out work, and this operational example is as by signal processing submodule 171, the mode by software realizes, and the present invention is not as limit.
In certain embodiments, when when carrying out fingerprint recognition, signal is processed submodule 171 can also not work fingerprint Identification sensor 12 by fingerprint recognition circuit submodule 172, utilizes position transducer 13 to carry out location recognition operation.
Signal is processed submodule 171 and for example by corresponding application software, is judged when need to carry out fingerprint recognition.For example, when carrying out the application software of fingerprint recognition, be activated, and when prompting user carries out fingerprint recognition, this prompting can also comprise demonstration fingerprint recognition prompting region, this region is substantially corresponding to fingerprint Identification sensor 12 positions, signal is processed the indication that submodule 171 receives this application software, and fingerprint Identification sensor 12 is set to FP pattern; And after fingerprint recognition process finishes, signal is processed the indication that submodule 171 receives application software again, the pattern that fingerprint Identification sensor 12 is set is TP pattern.
Continuation is with reference to figure 1, owing to having made fingerprint Identification sensor 12 on transparent cover plate 11, cause forming high low head in the both sides of fingerprint Identification sensor 12, in order to eliminate this high low head, touch screen 1 also comprises packed layer 15, for example adopt silicon dioxide (SiO2) material to fill, make the height of packed layer 15 identical with the height of fingerprint Identification sensor 12, even if packed layer 15 is a surface level with the upper surface of fingerprint Identification sensor 12.
In addition, on fingerprint Identification sensor 12, be also formed with protective seam 16, so that fingerprint Identification sensor 12 is protected.
Protective seam 16 for example forms by spraying technology or printing technology, and the material of protective seam comprises: diamond-like-carbon (DLC) or light-sensitive emulsion (UV glue).
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.
Fig. 5 is the schematic diagram of the terminal device of the touch screen that has fingerprint identification function comprising of the embodiment of the present invention.As shown in Figure 5, terminal device 2 is for example smart mobile phone, and its screen can be divided into 21He Fei visible area, visible area 22.Fingerprint Identification sensor 12 can be arranged in visible area 21, for example, be arranged at as shown in Figure 5 the position of the lower middle of visible area 21.
When needs carry out fingerprint recognition, be that fingerprint Identification sensor 12 is while working in FP pattern, can to user, show fingerprint recognition prompting region 211 by software, this region is substantially corresponding to fingerprint Identification sensor 12 regions, with by carrying out fingerprint recognition such as operations such as pressing fingerprint Identification sensor 12.This substantially correspondence comprise: this fingerprint recognition region can be slightly larger than or be slightly less than fingerprint Identification sensor 12, and the center in this fingerprint recognition region and fingerprint Identification sensor 12 center can slightly be offset etc.
Fingerprint recognition prompting region 211 can be for example the ellipse of similar finger, can also be for circular, square, rectangle etc., and the present invention is not as limit.
The terminal device that comprises the touch screen with fingerprint identification function of the embodiment of the present invention, by the position transducer compatible design with wherein, can realize in the visible area of this 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.
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 (11)
1. a touch screen with fingerprint identification function, is characterized in that, comprising:
Transparent cover plate;
Position transducer, it fits under described transparent cover plate, comprises a virtual hollow out region; And,
Fingerprint Identification sensor, it is formed on described transparent cover plate, and symmetrical about described transparent cover plate with described virtual hollow out region.
2. the touch screen with fingerprint identification function according to claim 1, is characterized in that, also comprises: treatment circuit, and described treatment circuit comprises:
Fingerprint recognition circuit submodule; And,
Signal is processed submodule, and it is electrically connected to described fingerprint recognition circuit submodule, and the mode of operation of described fingerprint Identification sensor is set by described fingerprint recognition circuit submodule.
3. the touch screen with fingerprint identification function according to claim 2, is characterized in that, described mode of operation comprises: fingerprint recognition pattern and location recognition pattern; Wherein when described fingerprint Identification sensor is set to described fingerprint recognition pattern, shown in fingerprint Identification sensor be used for carrying out fingerprint recognition; When described fingerprint Identification sensor is set to described location recognition pattern, for feeding back the positional information in finger touches region.
4. the touch screen with fingerprint identification function according to claim 1, is characterized in that, the electrode that is arranged in the position transducer in described virtual hollow out region is not used in the positional information detection in described virtual hollow out region.
5. 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 fingerprint Identification sensor.
6. the touch screen with fingerprint identification function according to claim 5, is characterized in that, the material of described protective seam comprises: diamond-like-carbon or UV glue.
7. the touch screen with fingerprint identification function according to claim 1 and 2, is characterized in that, also comprises: packed layer, it is positioned at described fingerprint Identification sensor both sides, with the drop that described fingerprint Identification sensor both sides are formed, fills.
8. the touch screen with fingerprint identification function according to claim 7, is characterized in that, the material of described packed layer comprises: silicon dioxide.
9. the touch screen with fingerprint identification function according to claim 1 and 2, is characterized in that, the screen of described touch screen comprises: He Fei visible area, visible area; Wherein said visible area comprises: fingerprint recognition prompting region, it is roughly corresponding to described fingerprint Identification sensor.
10. a terminal device, is characterized in that, comprises according to the touch screen with fingerprint identification function described in claim 1-9 any one.
11. 1 kinds of fingerprint identification methods for the terminal device of fingerprint identification function, described terminal device comprises fingerprint sensor, it is characterized in that, described fingerprint identification method comprises: if need to carry out fingerprint recognition, described fingerprint Identification sensor is for fingerprint recognition; Otherwise described fingerprint sensor, when sensing the finger touches of its correspondence position, feeds back the positional information of finger presses.
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