WO2014171751A1 - Input apparatus having fingerprint sensor and portable electronic device comprising same - Google Patents
Input apparatus having fingerprint sensor and portable electronic device comprising same Download PDFInfo
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- WO2014171751A1 WO2014171751A1 PCT/KR2014/003335 KR2014003335W WO2014171751A1 WO 2014171751 A1 WO2014171751 A1 WO 2014171751A1 KR 2014003335 W KR2014003335 W KR 2014003335W WO 2014171751 A1 WO2014171751 A1 WO 2014171751A1
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- WIPO (PCT)
- Prior art keywords
- fingerprint sensor
- sensor
- fingerprint
- input device
- base substrate
- Prior art date
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-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0338—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of limited linear or angular displacement of an operating part of the device from a neutral position, e.g. isotonic or isometric joysticks
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/039—Accessories therefor, e.g. mouse pads
- G06F3/0393—Accessories for touch pads or touch screens, e.g. mechanical guides added to touch screens for drawing straight lines, hard keys overlaying touch screens or touch pads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1329—Protecting the fingerprint sensor against damage caused by the finger
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
- H04M1/667—Preventing unauthorised calls from a telephone set
- H04M1/67—Preventing unauthorised calls from a telephone set by electronic means
Definitions
- the present invention relates to an input device having a fingerprint sensor and a portable electronic device including the same.
- Portable electronic devices often incorporate a touch screen integrated with a display, which is a display device, as one of input devices for receiving a specific command from a user.
- the portable electronic device may have various function keys or soft keys as input devices other than the touch screen.
- FIG. 1 illustrates a general shape of a smartphone that is a portable electronic device.
- a display unit 1100 is installed on a front surface of the portable electronic device 1000.
- the display unit 1100 includes a capacitive touch screen.
- the display unit 1100 detects a change in capacitance of the built-in capacitor to detect whether or not the touch is performed.
- Capacitive touch screens are very convenient in that they are responsive, do not need a separate input tool, and can be multi-touched, but they can only be detected if the user touches the touch screen over a certain area or pressure. And, this has a disadvantage that the precise input is difficult.
- the electronic pen is also called an Electro-Magnetic Resonance (EMR) pen and has a capacitor and a coil inside.
- the loop coil is disposed on the touch screen, and electromagnetic waves generated by conducting current through the loop coil are absorbed by the electromagnetic pen, and the electromagnetic pen emits the absorbed electromagnetic waves at a specific frequency.
- the loop coil of the touch screen is the specific frequency.
- the touch screen input method by the electronic pen gives a feeling of a writing tool familiar to the user, and can transmit a more precise touch feeling.
- a home key 1200 and a function key 1300 may be provided under the portable electronic apparatus 1000 to perform various functions such as execution check, undo, menu display, and reversion.
- the home key 1200 or the function key 1300 is an input device separate from the display unit 1100 having a touch screen, and in theory, such as a mechanical switching key or a display unit 1100, Electromagnetic pen type input is possible, but in practice, the mechanical switching key (used mainly for the home key 1200) or the capacitive sensor (mainly used for the function key 1300) due to limitations in the accommodation space. Use) has been used.
- the fingerprint sensor is a sensor for detecting a human finger fingerprint.
- the fingerprint sensor protects data stored in a portable electronic device and prevents a security accident by performing a user registration or authentication procedure through the fingerprint sensor.
- Portable electronics also incorporate navigation into the fingerprint sensor to perform pointer manipulation, such as cursors.
- a switching function that receives information from a user may be integrated into the fingerprint sensor.
- the home key 1200 of the fingerprint sensor type and the function key 1300 of the capacitive type are mounted separately on the portable electronic device, the process inefficiency and the cost increase due to the separate process are required. There was a problem.
- the function key 1300 may cause inconvenience in the user experience when using the electronic pen.
- the present invention is to solve the above-mentioned problems of the prior art, the present invention is an input device including a fingerprint sensor, using a fingerprint sensor as a home key, the function key in any of the capacitive method or electromagnetic pen method
- An object of the present invention is to provide an input device using a composite sensor capable of input.
- the present invention is to provide an integrated input device that can provide an excellent user experience, the manufacturing process is simple, and the cost can be reduced.
- an embodiment of the present invention is an input device for a portable electronic device comprising a fingerprint sensor module and a composite sensor, the fingerprint sensor module is located on the bracket and the upper side of the bracket, A fingerprint sensor having a sensing unit formed on the flexible substrate and a sensor circuit unit electrically connected to the sensing unit, and a coating layer located on the upper side of the fingerprint sensor, wherein the composite sensing sensor has a capacitance for approaching or contacting a conductor. And a loop coil and an electromagnetic sensor to detect an approach or a contact of the electronic pen by sensing an electrode detected through a change of the magnetic pen and a magnetic field emitted by the electronic pen, wherein the fingerprint sensor module and the composite sensor are the same base substrate. It provides an input device, characterized in that located on the.
- the fingerprint sensor module further comprises a dome switch, the dome switch may be located between the bracket and the base substrate, or may be located below the base substrate.
- the composite sensor a plurality of spaced apart on both sides of the fingerprint sensor module on the base substrate can be installed.
- the fingerprint sensor, the external interface connection line is formed and includes a flexible connection
- the connecting portion may be connected to the upper or lower surface of the base substrate through the adhesive.
- the adhesive may be made of an anisotropic conductive film.
- the sensing unit may be located on the upper surface of the flexible substrate, the sensor circuit portion may be located on the lower surface of the flexible substrate.
- the sensing unit is composed of an image receiving electrode and a plurality of driving electrodes positioned on the upper surface of the flexible substrate, the image receiving electrode is electrically connected to the sensor circuit portion, the plurality of driving One end of the electrode may be spaced apart from the image receiving electrode by a predetermined distance, and the other end of the plurality of driving electrodes may be electrically connected to the sensor circuit.
- the coating layer may include a post-processing layer made of a thin film using a paint.
- Another embodiment of the present invention for achieving the above object there is provided a portable electronic device having the above-described input device.
- Another embodiment of the present invention for achieving the above object having a base substrate, a fingerprint sensor positioned on the base substrate, the fingerprint sensor for recognizing the user's fingerprint and the dome switch for recognizing the user's finger pressing Provides a fingerprint sensor module, and a composite sensor located on the base substrate and spaced apart from the fingerprint sensor module, a composite sensor for detecting the approach or contact of the conductor and the electronic pen.
- an integrated input device having a fingerprint sensor and a composite sensor and a portable electronic device including the same may be provided.
- a fingerprint sensor by using a fingerprint sensor can provide an input device and a portable electronic device including the same can use a home key having a security function and easy to use.
- an input device that can use a function key capable of both capacitive and electromagnetic pen type input, and a portable electronic device including the same.
- an integrated input device and a portable electronic device including the same which may provide an excellent user experience, simplify the manufacturing process, and reduce cost.
- 1 is a view showing a general shape of a portable electronic device.
- Figure 2 (a) is a perspective view of an input device for a portable electronic device according to an embodiment of the present invention
- Figure 2 (b) is a plan view thereof.
- FIG. 3 is a cross-sectional view taken along the line AA ′ of FIG. 2 (b).
- FIG. 4 is a perspective view of the fingerprint sensor shown in FIG. 3.
- FIG. 5 is a schematic configuration diagram of the fingerprint sensor shown in FIG. 3.
- FIG. 6 is a cross-sectional view of an input device for a portable electronic device according to another embodiment of the present invention.
- FIG. 7 is a perspective view of the fingerprint sensor shown in FIG. 6.
- FIG. 8 is a schematic diagram illustrating a process of detecting a capacitance change by a composite sensor provided in an input device for a portable electronic device according to an embodiment of the present disclosure.
- FIG. 9 is a schematic diagram illustrating a process of detecting a magnetic field change by a composite sensor provided in an input device for a portable electronic device according to an embodiment of the present disclosure.
- Figure 2 (a) is a perspective view of an input device for a portable electronic device according to an embodiment of the present invention
- Figure 2 (b) is a plan view thereof.
- the portable electronic device includes a mobile phone, a smartphone, a PDA, a tablet PC, a notebook computer, a portable sound player (MP3 player), and all portable electronic devices of a similar type.
- MP3 player portable sound player
- the input device 10 includes a base substrate 100, a fingerprint sensor module 200, and a composite sensor 300.
- the composite sensor 300 is shown as being composed of two sensors 300a; 300b respectively installed on both the left and right sides of the fingerprint sensor module 200, but may be composed of one or three or more sensors.
- the fingerprint sensor module 200 corresponds to the home key 1200 of the portable electronic apparatus 1000 shown in FIG. 1, and the two composite detection sensors 300a and 300b include two function keys 1300a shown in FIG. 1. 1300b).
- the fingerprint sensor module 200 is located on the base substrate 100 and includes a fingerprint sensor that recognizes a user's fingerprint.
- the fingerprint sensor module 200 may further include a dome switch that recognizes a user's finger press.
- the composite sensor 300 is spaced apart from the fingerprint sensor module 200 on the base substrate 100 and senses the approach or contact of the conductor and the electronic pen. As such, the fingerprint sensor module 200 and the composite sensor 300 are integrally installed on the same base substrate 100, and the fingerprint sensor module 200 is mounted by mounting the packaged input device on the portable electronic device. Compared to the case where the and the multiple sensor 300 are mounted in a portable electronic device in a separate process, the process is simpler, the cost is reduced, and the process time can be shortened.
- FIG. 3 is a cross-sectional view taken along line AA ′ of FIG. 2B
- FIG. 4 is a perspective view of the fingerprint sensor shown in FIG. 3
- FIG. 5 is a schematic configuration diagram of the fingerprint sensor shown in FIG. 3.
- the fingerprint sensor module 200 may include a bracket 210, a fingerprint sensor 220, a bezel 230, and a coating layer 240.
- the fingerprint sensor 220 includes a connection part 221 having an external interface connection line and having flexibility, and the connection part 221 may be connected to the upper or lower surface of the base substrate 100 through the adhesive 500. . Detailed configuration thereof will be described later.
- the bracket 210 is a member for fixing the fingerprint sensor 220 and determines the overall shape of the fingerprint sensor module 200.
- the material of the bracket 210 is not particularly limited, but when the fingerprint sensor module 200 is used for a flexible substrate or a flexible display, the bracket 210 may be formed of a flexible material.
- the fingerprint sensor 220 is a member having a fingerprint sensing function, and is positioned above the bracket 210 and includes a sensing unit 223 formed on the flexible substrate 222 and a sensor circuit unit electrically connected to the sensing unit 223. 224) (see FIG. 5).
- FIG. 5A illustrates a top surface of the substrate 222
- FIG. 5B illustrates a bottom surface of the substrate 222
- FIG. 5C illustrates a sensing unit 223 and a sensor circuit unit (FIG. 5A). 224) is a schematic diagram showing the electrical connection relationship clearly.
- the substrate 222 may be a flexible substrate, for example, but may be made of a polymide film, but is not limited thereto.
- the sensing unit 223 includes a plurality of driving electrodes 223a and image receiving electrodes 223b formed on the substrate 222.
- the driving electrode 223a and the image receiving electrode 223b may be formed of conductor lines.
- the driving electrode 223a receives the driving signal from the sensor circuit unit 224 and transmits a signal to the image receiving electrode 223b.
- the image receiving electrode 223b receives a signal transmitted from the driving electrode 223a via a user (previously, a user's finger).
- One end portion of the image receiving electrode 223b positioned on the upper surface of the substrate 222 is formed to extend in the horizontal direction.
- the plurality of driving electrodes 223a are spaced apart from each other so as to be perpendicular to the direction in which the image receiving electrode 223b extends (see FIG. 5A).
- the image receiving electrode 223b is electrically connected to the sensor circuit unit 224 on the bottom surface of the substrate 222.
- One end of the plurality of driving electrodes 223a is spaced apart from the image receiving electrode 223b by a predetermined distance.
- the other ends of the plurality of driving electrodes 223a are electrically connected to the sensor circuit unit 224 on the bottom surface of the substrate 222.
- the driving electrode 223a and the image receiving electrode 223b are spaced apart from each other, and the driving signal transmitted from the driving electrode 223a is received by the image receiving electrode 223b via a user. At this time, it is possible to recognize the fingerprint by measuring the electric field change according to the presence or absence of the fingerprint bone or fingerprint acid located on the user's finger.
- driving electrodes 223a only nine driving electrodes 223a are displayed, but this is merely an example, and 200 driving electrodes may be installed.
- a time-divided driving signal is supplied to the plurality of driving electrodes 223a, and the signals are sequentially received from the image receiving electrode 223b to receive a line of fingerprint information.
- the user slides his or her finger with respect to the fingerprint sensor 220, by stacking the above-described fingerprint information, one overall fingerprint image is obtained.
- the fingerprint sensor 200 may be implemented with more image receiving electrode than the driving electrode.
- the plurality of image receiving electrodes measure the electric field change depending on the presence or absence of the fingerprint bone or the fingerprint acid, thereby enabling the recognition of the fingerprint.
- the sensor circuit unit 224 may have an external interface connection line 225 electrically connected to the outside.
- the external interface connection line 225 is provided on the connection unit 221 described above, and may be, for example, a universal serial bus (USB) or a serial peripheral interface (SPI) connection line.
- USB universal serial bus
- SPI serial peripheral interface
- the connecting portion 221 is formed integrally with the flexible substrate 22 and thus has flexibility.
- the connection part 221 has a shape protruding from the fingerprint sensor module 200, and since the connection part 221 is flexible, the connection part 221 is bent greatly, and the tip 221a is used as an adhesive 500 to form a base substrate ( 100 may be connected to the bottom surface (see FIG. 3).
- the adhesive 500 may be made of, for example, an anisotropic conductive film (ACF).
- the fingerprint sensor 220 may be implemented in a chip-on-flex method.
- the sensing unit 223, that is, only the driving electrode 223a and the image receiving electrode 223b is formed on the upper surface of the substrate 222, and the sensor circuit unit 224 connected to the sensing unit 223 on the lower surface of the substrate 222.
- the overall appearance can be made compact.
- by not providing a sensor circuit on the upper surface of the substrate 222 it is easier to install the glass on the fingerprint sensor module 200, which is a particularly useful effect in a portable electronic device such as a smart phone.
- the fingerprint sensor 220 is implemented on a flexible substrate, but does not necessarily require a metal bezel for driving electrodes, thereby helping to soften the fingerprint sensor module and even electronic devices, and in terms of cost. Is advantageous.
- the fingerprint sensor 220 basically has a function of detecting a fingerprint.
- the fingerprint sensor 220 may store information on the feature points of the fingerprint (for example, the part where the fingerprint is divided, such as the 'Y' point), and compare the feature points to detect whether the fingerprints match. have.
- the time required for fingerprint detection can be shortened, and miniaturization can be achieved through the simplification of the processor, so that the mountability to the electronic device can be improved.
- the fingerprint sensor 220 may have a pointer manipulation function together with a fingerprint detection function. That is, the fingerprint sensor 220 may include a pointer manipulation function that detects a change over time of the user fingerprint image and moves a pointer such as a cursor based on the movement.
- the bezel 230 is positioned at the side of the fingerprint sensor 220 to form an edge of the fingerprint sensor 220. Accordingly, the user may recognize the area where the fingerprint sensor module 200 is located in the portable electronic device through the bezel 230.
- the bezel 230 may be formed to cover all or part of the edge of the fingerprint sensor 220.
- the bezel 230 is generally made of resin or rubber, but is not particularly limited thereto.
- the bezel 230 may be formed to be integrated with the bracket 210.
- the bezel 230 and the bracket 210 may be formed at the same time by injection.
- the bezel 230 may be formed to support a portion having flexibility of the fingerprint sensor 220.
- the bezel 230 may serve as a support for fixing the substrate 222 to prevent the flexible substrate 222 from shaking due to the step caused by the sensor circuit unit 224.
- the coating layer 240 is positioned above the bezel 230 and the fingerprint sensor 220.
- the coating layer 240 may be implemented as a plurality of layers, and various functions are performed according to the function of the layer.
- the coating layer 240 may include a post-processing layer (not shown) made of a thin film using paint.
- the post-processing layer may be formed by, for example, a printing process, a color spray process, a primer process, or an UV coating process.
- the coating layer 240 may implement a variety of functions such as implementing colors in the fingerprint sensor module 200 or reinforcing the upper surface strength of the fingerprint sensor module 200.
- the fingerprint sensor 220 since the fingerprint sensor 220 includes a sensing unit 223 and a sensor circuit unit 224 disposed on the upper and lower surfaces of the flexible substrate, the effect of the strength reinforcement as described above is more useful.
- the thickness of the coating layer 240 including the post-processing layer is 0.1 mm or less.
- the lower surface of the bracket 210 may be provided with a dome switch 250. That is, the dome switch 250 may be located between the bracket 210 and the base substrate 100.
- the dome switch 250 is a mechanical or electrical switching element capable of detecting a user's pressing and receiving a desired information or command.
- the dome switch 250 includes a user to switch a pointed menu or icon. This makes it easy to choose.
- FIG. 6 is a cross-sectional view of an input device for a portable electronic device according to another embodiment of the present invention (sectional view along the line AA ′ of FIG. 2B), and FIG. 7 is a perspective view of the fingerprint sensor of FIG. 6. Is shown.
- the dome switch 250 is positioned below the base substrate 100.
- the connection part 221 protrudes toward the side of the fingerprint sensor module 200. Therefore, instead of connecting the connecting portion 221 of the fingerprint sensor 220 to the lower surface of the base substrate 100 as in the previous embodiment, the dome switch 250 is disposed on the lower surface of the base substrate 100, The connection part 221 of the fingerprint sensor 220 is coupled to the upper surface of the base substrate 100, specifically, between a region where the fingerprint sensor module 200 and the composite sensor 300 are located by using an adhesive.
- FIG. 8 is a schematic diagram illustrating a process of detecting a capacitance change by a composite sensor provided in an input device for a portable electronic device according to an embodiment of the present invention
- Figure 9 is an input for a portable electronic device according to an embodiment of the present invention It is a schematic diagram showing a process of detecting a magnetic field change by the composite sensor provided in the device.
- the composite sensor 300 may detect the approach or contact of a conductor such as a conductive pen instead of a user's finger or the like through a change in capacitance.
- the magnetic pen can detect the approach or contact of the electronic pen. That is, the composite sensor 300 may be both capacitive sensing and electromagnetic inductive sensing. Therefore, while the user uses the touch screen of the display unit by using the electronic pen, the user can continuously operate a separate function key by using the electronic pen.
- the complex sensor 300 includes a transmitting electrode 310 and a receiving electrode 320 provided on a substrate.
- the transmitting electrode 310 receives a driving signal from a separate circuit unit and transmits the driving signal to the outside, and the receiving electrode 320 receives the driving signal transmitted through a conductor (user).
- the electric field E formed from the transmitting electrode 310 to the receiving electrode 320 is different from the case where the user does not approach or contact. This is recognized as a change in capacitance. Therefore, it is possible to detect whether the user U makes a touch.
- the electromagnetic pen is a pen using electromagnetic waves, and generally refers to an EMR pen and a magnetic pen.
- the composite sensor 300 includes a loop coil 330 and a magnetic sensor 340 provided on a substrate for sensing of electromagnetic.
- a current is conducted to the loop coil 330, a magnetic field M is generated, and the magnetic field M is absorbed by the electromagnetic pen 600.
- the electromagnetic pen 600 includes a condenser 610 and a coil 620 and may emit the absorbed magnetic field M at a predetermined frequency.
- the magnetic field M emitted by the electromagnetic pen 600 may be absorbed again by the loop coil 330 of the composite sensor 300, and accordingly, the magnetic sensor 340 may have a sufficient magnitude for the electromagnetic pen 600. It is possible to detect whether or not access or contact. When a plurality of loop coils 330 are installed, it is possible to sense not only whether the electromagnetic pen 600 approaches / contacts, but also whether the electromagnetic pen 600 approaches / contacts.
- the integrated input device having a fingerprint sensor and the composite sensor and a portable electronic device including the same It can be provided.
- the integrated input device having a fingerprint sensor and the composite sensor and a portable electronic device including the same It can be provided.
- a home key that has a security function and is easy to use using a fingerprint sensor.
- a composite sensor capable of capacitive type and electromagnetic pen type input it is possible to provide a function key giving an excellent user experience.
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- Computer Hardware Design (AREA)
- Software Systems (AREA)
- Image Input (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
One embodiment of the present invention may provide an input apparatus for a portable electronic device, comprising: a fingerprint sensor module; and a complex sensor. The fingerprint sensor module comprises: a bracket; a fingerprint sensor, disposed on the upper side of the bracket, having a sensing unit formed on a flexible substrate and a sensor circuit unit electrically connected to the sensing unit; and a coating layer positioned on the upper side of the finger sensor. The complex sensor comprises: an electrode detecting an access or touch of a conductor through a capacitance change; a loop coil detecting an access or touch of an electromagnetic pen by sensing a magnetic field released by the electromagnetic pen; and an electromagnetic sensor. In addition, the fingerprint sensor module and the complex sensor are positioned on the same base substrate.
Description
본 발명은 지문센서를 갖는 입력장치 및 이를 포함하는 휴대용 전자기기에 관한 것이다.The present invention relates to an input device having a fingerprint sensor and a portable electronic device including the same.
최근 스마트폰(smartphone)이나 태블릿 피씨(tablet PC)를 비롯한 휴대용 전자기기에 대하여 대중들의 관심이 집중되면서, 관련 기술분야에 대한 연구개발이 활발히 진행되고 있다. 휴대용 전자기기는, 사용자로부터 특정한 명령을 입력받기 위한 입력장치의 하나로서 표시장치인 디스플레이와 일체화된 터치스크린(touch screen)을 내장하는 경우가 많다. 또한 휴대용 전자기기는 터치스크린 이외의 입력장치로서 각종 기능키(function key)나 소프트키(soft key)를 구비하기도 한다.Recently, as public attention has focused on portable electronic devices, such as smartphones and tablet PCs, research and development in the related technical fields are actively progressing. BACKGROUND OF THE INVENTION Portable electronic devices often incorporate a touch screen integrated with a display, which is a display device, as one of input devices for receiving a specific command from a user. In addition, the portable electronic device may have various function keys or soft keys as input devices other than the touch screen.
도 1에는 휴대용 전자기기인 스마트폰의 일반적인 형상이 도시되어 있다. 도 1을 참조하면, 휴대용 전자기기(1000)의 전면에는 디스플레이부(1100)가 설치된다. 디스플레이부(1100)는 정전용량 방식의 터치스크린을 포함하는데, 사용자의 신체(손가락 등)가 디스플레이부에 접촉하면, 내장된 커패시터의 정전용량 변화를 감지하여 터치 여부를 감지하게 된다.1 illustrates a general shape of a smartphone that is a portable electronic device. Referring to FIG. 1, a display unit 1100 is installed on a front surface of the portable electronic device 1000. The display unit 1100 includes a capacitive touch screen. When the user's body (finger, etc.) comes into contact with the display unit, the display unit 1100 detects a change in capacitance of the built-in capacitor to detect whether or not the touch is performed.
정전용량 방식의 터치스크린은 반응이 즉각적이고, 별도의 입력도구가 필요없으며, 멀티터치가 가능하다는 점에서 매우 편리하지만, 사용자가 반드시 터치스크린에 소정의 면적 또는 압력 이상의 터치를 수행해야만 감지될 수 있으며, 이로 인해 정밀한 입력이 곤란하다는 단점이 있었다.Capacitive touch screens are very convenient in that they are responsive, do not need a separate input tool, and can be multi-touched, but they can only be detected if the user touches the touch screen over a certain area or pressure. And, this has a disadvantage that the precise input is difficult.
이러한 문제를 해결하기 위해, 전자기펜을 이용한 터치스크린 기술이 도입되었다. 전자기펜은 전자기 공진(EMR: Electro-Magnetic Resonance) 펜으로도 불리며, 내부에 콘덴서와 코일을 내장하고 있다. 터치스크린에는 루프 코일이 배치되며, 이 루프 코일에 전류를 도통시켜 발생된 전자기파가 전자기펜에 흡수되고, 전자기펜은 흡수한 전자기파를 특정 주파수로 방출하게 되는데, 터치스크린의 루프 코일이 이 특정 주파수의 전자기파를 다시 흡수함으로써, 전자기펜의 위치를 감지하게 된다. 전자기펜에 의한 터치스크린 입력 방식은 사용자에게 익숙한 필기도구의 느낌을 주며, 보다 정밀한 터치감을 전달할 수 있다. 또한, 사용자가 펜을 사용하기 위해 손을 터치스크린에 접촉하는 경우에도 펜의 입력만을 선택적으로 인식하는 것이 가능하게 된다.To solve this problem, a touch screen technology using an electronic pen has been introduced. The electronic pen is also called an Electro-Magnetic Resonance (EMR) pen and has a capacitor and a coil inside. The loop coil is disposed on the touch screen, and electromagnetic waves generated by conducting current through the loop coil are absorbed by the electromagnetic pen, and the electromagnetic pen emits the absorbed electromagnetic waves at a specific frequency. The loop coil of the touch screen is the specific frequency. By absorbing again the electromagnetic wave, the position of the electromagnetic pen is detected. The touch screen input method by the electronic pen gives a feeling of a writing tool familiar to the user, and can transmit a more precise touch feeling. In addition, even when the user touches the hand with the touch screen to use the pen, it is possible to selectively recognize only the input of the pen.
최근에는 정전용량 방식과 전자기펜 방식을 결합하여, 두 가지 경우 모두에 대해 사용할 수 있는 복합 터치스크린이 개발되어 상용화되고 있다.Recently, by combining a capacitive method and an electromagnetic pen method, a composite touch screen that can be used for both cases has been developed and commercialized.
한편, 휴대용 전자기기(1000)의 하부에는 실행 확인, 실행 취소, 메뉴 표시, 되돌리기 등의 각종 기능을 수행하는 홈키(home key)(1200) 및 기능키(1300)가 마련될 수 있다. 이러한 홈키(1200) 또는 기능키(1300)는 터치스크린을 가진 디스플레이부(1100)와는 별도의 입력장치로서, 이론적으로는 기계적인 스위칭 방식의 키, 또는 디스플레이부(1100)와 같이 정전용량 방식이나 전자기펜 방식의 입력이 모두 가능하지만, 실제에 있어서는 수용 공간의 제한 등의 이유로 인해 기계적인 스위칭 방식의 키(주로 홈키(1200)에 사용)나 정전용량 방식의 센서(주로 기능키(1300)에 사용)가 이용되어 왔다.Meanwhile, a home key 1200 and a function key 1300 may be provided under the portable electronic apparatus 1000 to perform various functions such as execution check, undo, menu display, and reversion. The home key 1200 or the function key 1300 is an input device separate from the display unit 1100 having a touch screen, and in theory, such as a mechanical switching key or a display unit 1100, Electromagnetic pen type input is possible, but in practice, the mechanical switching key (used mainly for the home key 1200) or the capacitive sensor (mainly used for the function key 1300) due to limitations in the accommodation space. Use) has been used.
이로 인해 사용자가 전자기펜 방식으로 디스플레이부(1100)에 명령을 입력하는 중에 기능키(1300)를 사용하기 위해서는 전자기펜이 아닌 손가락으로 기능키(1300)를 터치해야만 하는 등, 사용자 경험상의 여러가지 불편이 있었다.Accordingly, in order to use the function key 1300 while the user inputs a command to the display unit 1100 using the electronic pen method, various inconveniences in the user experience, such as having to touch the function key 1300 with a finger instead of the electronic pen, are required. There was this.
한편, 최근에는 휴대용 전자기기의 보안이 중요시됨에 따라, 홈키(1200)에 지문센서를 내장한 형태가 도입되었다. 지문센서는 인간의 손가락 지문을 감지하는 센서로서, 지문센서를 통해 사용자 등록이나 인증 절차를 거치도록 함으로써, 휴대용 전자기기에 저장된 데이터를 보호하고, 보안사고를 미연에 방지하게 된다.On the other hand, in recent years, as the security of the portable electronic device is important, a form in which a fingerprint sensor is embedded in the home key 1200 has been introduced. The fingerprint sensor is a sensor for detecting a human finger fingerprint. The fingerprint sensor protects data stored in a portable electronic device and prevents a security accident by performing a user registration or authentication procedure through the fingerprint sensor.
또한 휴대용 전자기기에서는 커서와 같은 포인터의 조작을 수행하는 내비게이션 기능을 지문센서에 통합시키기도 한다. 그 외에도, 사용자로부터 정보를 입력받는 스위칭 기능을 지문센서에 통합하기도 한다.Portable electronics also incorporate navigation into the fingerprint sensor to perform pointer manipulation, such as cursors. In addition, a switching function that receives information from a user may be integrated into the fingerprint sensor.
그러나, 종래에는 지문센서 형태의 홈키(1200)와, 정전용량 방식의 기능키(1300)가 각각 별도로 휴대용 전자기기에 장착됨으로 인해, 각각 별도의 공정이 필요함으로 인한 공정의 비효율화 및 비용증가 등의 문제가 있었다. 또한, 전술한 바와 같이 기능키(1300)는디스플레이부(1100)가 전자기펜 입력을 지원하는 경우에는 전자기펜 이용시 사용자 경험상의 불편함도 존재하였다.However, in the related art, since the home key 1200 of the fingerprint sensor type and the function key 1300 of the capacitive type are mounted separately on the portable electronic device, the process inefficiency and the cost increase due to the separate process are required. There was a problem. In addition, as described above, when the display unit 1100 supports the electronic pen input, the function key 1300 may cause inconvenience in the user experience when using the electronic pen.
따라서, 이러한 문제점을 해결할 수 있는 지문센서를 내장한 입력장치 및 이를 포함하는 휴대용 전자기기의 개발이 시급히 요구되고 있다.Therefore, there is an urgent need to develop an input device with a fingerprint sensor and a portable electronic device including the same, which can solve such problems.
본 발명은 전술한 종래기술의 문제점을 해결하기 위한 것으로, 본 발명은 지문센서를 포함하는 입력장치로서, 홈키로는 지문센서를 사용하고, 기능키로는 정전용량 방식이나 전자기펜 방식 중 어느 방식으로든 입력이 가능한 복합 감지센서를 사용하는 입력장치를 제공하고자 한다. 또한, 본 발명은 우수한 사용자 경험을 제공하고, 제작공정이 간단하며, 비용을 절감할 수 있는 일체화된 방식의 입력장치를 제공하고자 한다.The present invention is to solve the above-mentioned problems of the prior art, the present invention is an input device including a fingerprint sensor, using a fingerprint sensor as a home key, the function key in any of the capacitive method or electromagnetic pen method An object of the present invention is to provide an input device using a composite sensor capable of input. In addition, the present invention is to provide an integrated input device that can provide an excellent user experience, the manufacturing process is simple, and the cost can be reduced.
상기와 같은 목적을 달성하기 위해, 본 발명의 일실시예는 지문센서 모듈 및 복합 감지센서를 포함하는 휴대용 전자기기용 입력장치로서, 상기 지문센서 모듈은, 브라켓과, 상기 브라켓의 상측에 위치하며, 유연 기판에 형성된 센싱부와 상기 센싱부와 전기적으로 연결된 센서회로부를 가지는 지문센서와, 상기 지문센서의 상측에 위치하는 코팅층을 포함하며, 상기 복합 감지센서는, 도전체의 접근 또는 접촉을 정전용량의 변화를 통해 감지하는 전극과, 전자기펜에 의해 방출된 자기장을 감지하여 전자기펜의 접근 또는 접촉을 감지하는 루프 코일 및 전자기 센서를 포함하며, 상기 지문센서 모듈 및 상기 복합 감지센서는 동일한 베이스 기판 상에 위치하는 것을 특징으로 하는 입력장치를 제공한다.In order to achieve the above object, an embodiment of the present invention is an input device for a portable electronic device comprising a fingerprint sensor module and a composite sensor, the fingerprint sensor module is located on the bracket and the upper side of the bracket, A fingerprint sensor having a sensing unit formed on the flexible substrate and a sensor circuit unit electrically connected to the sensing unit, and a coating layer located on the upper side of the fingerprint sensor, wherein the composite sensing sensor has a capacitance for approaching or contacting a conductor. And a loop coil and an electromagnetic sensor to detect an approach or a contact of the electronic pen by sensing an electrode detected through a change of the magnetic pen and a magnetic field emitted by the electronic pen, wherein the fingerprint sensor module and the composite sensor are the same base substrate. It provides an input device, characterized in that located on the.
본 발명의 일실시예에 있어서, 상기 지문센서 모듈은 돔 스위치를 더 포함하며, 상기 돔 스위치는, 상기 브라켓과 상기 베이스 기판의 사이에 위치하거나, 또는 상기 베이스 기판의 하측에 위치할 수 있다.In one embodiment of the present invention, the fingerprint sensor module further comprises a dome switch, the dome switch may be located between the bracket and the base substrate, or may be located below the base substrate.
본 발명의 일실시예에 있어서, 상기 복합 감지센서는, 상기 베이스 기판 상에서 상기 지문센서 모듈의 양측에 복수개가 이격되어 설치될 수 있다.In one embodiment of the present invention, the composite sensor, a plurality of spaced apart on both sides of the fingerprint sensor module on the base substrate can be installed.
본 발명의 일실시예에 있어서, 상기 지문센서는, 외부 인터페이스 연결라인이 형성되며 가요성을 가지는 연결부를 포함하며, 상기 연결부는 접착제를 통해 상기 베이스 기판의 상면 또는 하면에 연결될 수 있다.In one embodiment of the present invention, the fingerprint sensor, the external interface connection line is formed and includes a flexible connection, the connecting portion may be connected to the upper or lower surface of the base substrate through the adhesive.
본 발명의 일실시예에 있어서, 상기 접착제는 이방성 도전 필름으로 이루어질 수 있다.In one embodiment of the present invention, the adhesive may be made of an anisotropic conductive film.
본 발명의 일실시예에 있어서, 상기 센싱부는 상기 유연 기판의 상면에 위치하며, 상기 센서회로부는 상기 유연 기판의 하면에 위치할 수 있다.In one embodiment of the present invention, the sensing unit may be located on the upper surface of the flexible substrate, the sensor circuit portion may be located on the lower surface of the flexible substrate.
본 발명의 일실시예에 있어서, 상기 센싱부는 상기 유연 기판의 상면에 위치하는 이미지 수신전극 및 복수개의 구동전극으로 이루어지며, 상기 이미지 수신전극은 상기 센서회로부에 전기적으로 연결되며, 상기 복수개의 구동전극의 일단부는 상기 이미지 수신전극에서 미리 정해진 거리만큼 이격되어 위치하며, 상기 복수개의 구동전극의 타단부는 상기 센서회로부에 전기적으로 연결될 수 있다.In one embodiment of the present invention, the sensing unit is composed of an image receiving electrode and a plurality of driving electrodes positioned on the upper surface of the flexible substrate, the image receiving electrode is electrically connected to the sensor circuit portion, the plurality of driving One end of the electrode may be spaced apart from the image receiving electrode by a predetermined distance, and the other end of the plurality of driving electrodes may be electrically connected to the sensor circuit.
본 발명의 일실시예에 있어서, 상기 코팅층은, 도료를 이용한 박막으로 이루어진 후가공층을 포함할 수 있다.In one embodiment of the present invention, the coating layer may include a post-processing layer made of a thin film using a paint.
상기와 같은 목적을 달성하기 위한 본 발명의 다른 실시예는, 전술한 입력장치를 구비한 휴대용 전자기기를 제공한다.Another embodiment of the present invention for achieving the above object, there is provided a portable electronic device having the above-described input device.
상기와 같은 목적을 달성하기 위한 본 발명의 또 다른 실시예는, 베이스 기판과, 상기 베이스 기판 상에 위치하며, 사용자의 지문을 인식하는 지문센서 및 사용자의 손가락의 누름을 인식하는 돔 스위치를 갖는 지문센서 모듈과, 상기 베이스 기판 상에서 상기 지문센서 모듈과 이격되어 위치하며, 도전체 및 전자기펜의 접근 또는 접촉을 감지하는 복합 감지센서를 포함하는 것을 특징으로 하는 휴대용 전자기기용 입력장치를 제공한다.Another embodiment of the present invention for achieving the above object, having a base substrate, a fingerprint sensor positioned on the base substrate, the fingerprint sensor for recognizing the user's fingerprint and the dome switch for recognizing the user's finger pressing Provides a fingerprint sensor module, and a composite sensor located on the base substrate and spaced apart from the fingerprint sensor module, a composite sensor for detecting the approach or contact of the conductor and the electronic pen.
본 발명의 일실시예에 따르면, 지문센서와 복합 감지센서를 구비한 일체화된 입력장치 및 이를 포함하는 휴대용 전자기기를 제공할 수 있다.According to an embodiment of the present invention, an integrated input device having a fingerprint sensor and a composite sensor and a portable electronic device including the same may be provided.
또한, 본 발명의 일실시예에 따르면 지문센서를 사용함으로써 보안 기능을 가지면서도 사용이 편리한 홈키를 이용할 수 있는 입력장치 및 이를 포함하는 휴대용 전자기기를 제공할 수 있다.In addition, according to an embodiment of the present invention by using a fingerprint sensor can provide an input device and a portable electronic device including the same can use a home key having a security function and easy to use.
또한, 본 발명의 일실시예에 따르면 정전용량 방식과 전자기펜 방식의 입력이 모두 가능한 기능키를 이용할 수 있는 입력장치 및 이를 포함하는 휴대용 전자기기를 제공할 수 있다.In addition, according to an embodiment of the present invention can provide an input device that can use a function key capable of both capacitive and electromagnetic pen type input, and a portable electronic device including the same.
또한, 본 발명의 일실시예에 따르면 우수한 사용자 경험을 제공하고, 제작공정이 간단하며, 비용을 절감할 수 있는 일체화된 방식의 입력장치 및 이를 포함하는 휴대용 전자기기를 제공할 수 있다.In addition, according to an embodiment of the present invention, it is possible to provide an integrated input device and a portable electronic device including the same, which may provide an excellent user experience, simplify the manufacturing process, and reduce cost.
본 발명의 효과는 상기한 효과로 한정되는 것은 아니며, 본 발명의 상세한 설명 또는 특허청구범위에 기재된 발명의 구성으로부터 추론가능한 모든 효과를 포함하는 것으로 이해되어야 한다.The effects of the present invention are not limited to the above-described effects, but should be understood to include all the effects deduced from the configuration of the invention described in the detailed description or claims of the present invention.
도 1은 휴대용 전자기기의 일반적인 형상을 나타내는 도면이다.1 is a view showing a general shape of a portable electronic device.
도 2의 (a)는 본 발명의 일실시예에 의한 휴대용 전자기기용 입력장치의 사시도이며, 도 2의 (b)는 그 평면도이다.Figure 2 (a) is a perspective view of an input device for a portable electronic device according to an embodiment of the present invention, Figure 2 (b) is a plan view thereof.
도 3은 도 2(b)의 A-A`선을 따른 단면도이다.3 is a cross-sectional view taken along the line AA ′ of FIG. 2 (b).
도 4는 도 3에 도시된 지문센서의 사시도이다.4 is a perspective view of the fingerprint sensor shown in FIG. 3.
도 5는 도 3에 도시된 지문센서의 개략적인 구성도이다.FIG. 5 is a schematic configuration diagram of the fingerprint sensor shown in FIG. 3.
도 6은 본 발명의 다른 실시예에 의한 휴대용 전자기기용 입력장치의 단면도이다.6 is a cross-sectional view of an input device for a portable electronic device according to another embodiment of the present invention.
도 7은 도 6에 도시된 지문센서의 사시도이다.FIG. 7 is a perspective view of the fingerprint sensor shown in FIG. 6.
도 8은 본 발명의 일실시예에 의한 휴대용 전자기기용 입력장치에 구비된 복합 감지센서가 정전용량 변화를 감지하는 과정을 나타낸 모식도이다.FIG. 8 is a schematic diagram illustrating a process of detecting a capacitance change by a composite sensor provided in an input device for a portable electronic device according to an embodiment of the present disclosure.
도 9는 본 발명의 일실시예에 의한 휴대용 전자기기용 입력장치에 구비된 복합 감지센서가 자기장 변화를 감지하는 과정을 나타낸 모식도이다.FIG. 9 is a schematic diagram illustrating a process of detecting a magnetic field change by a composite sensor provided in an input device for a portable electronic device according to an embodiment of the present disclosure.
이하에서는 첨부한 도면을 참조하여 본 발명을 설명하기로 한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며, 따라서 여기에서 설명하는 실시예로 한정되는 것은 아니다. 그리고 도면에서 본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 유사한 부분에 대해서는 유사한 도면 부호를 붙였다.Hereinafter, with reference to the accompanying drawings will be described the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.
명세서 전체에서, 어떤 부분이 다른 부분과 "연결"되어 있다고 할 때, 이는 "직접적으로 연결"되어 있는 경우뿐 아니라, 그 중간에 다른 부재를 사이에 두고 "간접적으로 연결"되어 있는 경우도 포함한다. 또한 어떤 부분이 어떤 구성요소를 "포함"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 구비할 수 있다는 것을 의미한다.Throughout the specification, when a part is "connected" to another part, it includes not only "directly connected" but also "indirectly connected" with another member in between. . In addition, when a part is said to "include" a certain component, this means that it may further include other components, without excluding the other components unless otherwise stated.
이하 첨부된 도면을 참고하여 본 발명의 실시예를 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 2의 (a)는 본 발명의 일실시예에 의한 휴대용 전자기기용 입력장치의 사시도이며, 도 2의 (b)는 그 평면도이다. 여기서, 휴대용 전자기기는 휴대폰, 스마트폰, PDA, 태블릿 피씨, 노트북 컴퓨터, 휴대용 음원재생기(MP3 플레이어), 및 이와 유사한 형태의 모든 휴대가능한 전자기기를 포함하는 것이다.Figure 2 (a) is a perspective view of an input device for a portable electronic device according to an embodiment of the present invention, Figure 2 (b) is a plan view thereof. Here, the portable electronic device includes a mobile phone, a smartphone, a PDA, a tablet PC, a notebook computer, a portable sound player (MP3 player), and all portable electronic devices of a similar type.
도시된 바와 같이, 입력장치(10)는 베이스 기판(100), 지문센서 모듈(200) 및 복합 감지센서(300)를 포함한다. 여기서 복합 감지센서(300)는 지문센서 모듈(200)의 좌우 양측에 각각 설치된 2개의 센서(300a; 300b)로 구성되는 것으로 도시되어 있으나, 1개 또는 3개 이상의 센서로 구성되는 것도 가능하다. 지문센서 모듈(200)은 도 1에 도시된 휴대용 전자기기(1000)의 홈키(1200)에 대응하는 것이고, 2개의 복합 감지센서(300a; 300b)는 도 1에 도시된 2개의 기능키(1300a; 1300b)에 각각 대응하는 것이다.As shown, the input device 10 includes a base substrate 100, a fingerprint sensor module 200, and a composite sensor 300. Here, the composite sensor 300 is shown as being composed of two sensors 300a; 300b respectively installed on both the left and right sides of the fingerprint sensor module 200, but may be composed of one or three or more sensors. The fingerprint sensor module 200 corresponds to the home key 1200 of the portable electronic apparatus 1000 shown in FIG. 1, and the two composite detection sensors 300a and 300b include two function keys 1300a shown in FIG. 1. 1300b).
지문센서 모듈(200)은 베이스 기판(100) 상에 위치하며, 사용자의 지문을 인식하는 지문센서를 포함한다. 지문센서 모듈(200)은 사용자의 손가락의 누름을 인식하는 돔 스위치를 더 포함할 수 있다.The fingerprint sensor module 200 is located on the base substrate 100 and includes a fingerprint sensor that recognizes a user's fingerprint. The fingerprint sensor module 200 may further include a dome switch that recognizes a user's finger press.
복합 감지센서(300)는 베이스 기판(100) 상에서 지문센서 모듈(200)과 이격되어 위치하며, 도전체 및 전자기펜의 접근 또는 접촉을 감지한다. 이와 같이, 지문센서 모듈(200)과 복합 감지센서(300)는 동일한 베이스 기판(100) 상에 일체화되어 설치되며, 이와 같이 패키지화된 입력장치를 휴대용 전자기기에 장착함으로써, 지문센서 모듈(200)과 복합 감지센서(300)를 각각 별도의 공정으로 휴대용 전자기기에 장착하는 경우에 비해 공정이 간단해지고, 비용이 절감되며, 공정시간이 단축될 수 있다.The composite sensor 300 is spaced apart from the fingerprint sensor module 200 on the base substrate 100 and senses the approach or contact of the conductor and the electronic pen. As such, the fingerprint sensor module 200 and the composite sensor 300 are integrally installed on the same base substrate 100, and the fingerprint sensor module 200 is mounted by mounting the packaged input device on the portable electronic device. Compared to the case where the and the multiple sensor 300 are mounted in a portable electronic device in a separate process, the process is simpler, the cost is reduced, and the process time can be shortened.
먼저, 구체적인 지문센서 모듈(200)의 구성, 기능, 및 작용에 대해서는 이하에서 도 3 내지 도 7을 참조하여 설명하기로 하고, 구체적인 복합 감지센서(300)의 구성, 기능, 및 작용에 대해서는 도 8 및 도 9를 참조하여 후술하기로 한다.First, the configuration, function, and action of the specific fingerprint sensor module 200 will be described with reference to FIGS. 3 to 7 below, and the configuration, function, and action of the specific composite sensor 300 will be described with reference to FIG. It will be described later with reference to 8 and FIG.
도 3은 도 2(b)의 A-A`선을 따른 단면도이고, 도 4는 도 3에 도시된 지문센서의 사시도이며, 도 5는 도 3에 도시된 지문센서의 개략적인 구성도이다.3 is a cross-sectional view taken along line AA ′ of FIG. 2B, FIG. 4 is a perspective view of the fingerprint sensor shown in FIG. 3, and FIG. 5 is a schematic configuration diagram of the fingerprint sensor shown in FIG. 3.
도시된 바와 같이, 지문센서 모듈(200)은 브라켓(210), 지문센서(220), 베젤(230), 및 코팅층(240)을 포함할 수 있다. 지문센서(220)는 외부 인터페이스 연결라인이 형성되며 가요성을 가지는 연결부(221)를 포함하며, 이 연결부(221)는 접착제(500)를 통해 베이스 기판(100)의 상면 또는 하면에 연결될 수 있다. 이에 대한 상세 구성은 후술하기로 한다.As shown, the fingerprint sensor module 200 may include a bracket 210, a fingerprint sensor 220, a bezel 230, and a coating layer 240. The fingerprint sensor 220 includes a connection part 221 having an external interface connection line and having flexibility, and the connection part 221 may be connected to the upper or lower surface of the base substrate 100 through the adhesive 500. . Detailed configuration thereof will be described later.
브라켓(210)은 지문센서(220)를 고정시키는 부재로서, 지문센서 모듈(200)의 전체적인 형상을 결정한다. 브라켓(210)의 재질로는 특별한 제한이 없으나, 지문센서 모듈(200)이 유연(flexible) 기판 또는 유연 디스플레이에 사용되는 경우에는 브라켓(210) 역시 가요성을 갖는 재질로 형성하는 것이 바람직하다.The bracket 210 is a member for fixing the fingerprint sensor 220 and determines the overall shape of the fingerprint sensor module 200. The material of the bracket 210 is not particularly limited, but when the fingerprint sensor module 200 is used for a flexible substrate or a flexible display, the bracket 210 may be formed of a flexible material.
지문센서(220)는 지문 감지 기능을 갖는 부재로서, 브라켓(210)의 상측에 위치하며, 유연 기판(222)에 형성된 센싱부(223)와 이 센싱부(223)에 전기적으로 연결된 센서회로부(224)를 가진다(도 5 참조).The fingerprint sensor 220 is a member having a fingerprint sensing function, and is positioned above the bracket 210 and includes a sensing unit 223 formed on the flexible substrate 222 and a sensor circuit unit electrically connected to the sensing unit 223. 224) (see FIG. 5).
도 5를 참조하여 센싱부(223) 및 센서회로부(224)의 구성을 구체적으로 살펴본다. 센싱부(223)는 기판(222)의 상면에 마련되며, 센서회로부(224)는 기판(222)의 하면에 마련된다. 도 5의 (a)는 기판(222)의 상면을, 도 5의 (b)는 기판(222)의 하면을 각각 도시하고 있으며, 도 5의 (c)는 센싱부(223)와 센서회로부(224)의 전기적 연결관계를 알기 쉽게 나타낸 구성도이다.The configuration of the sensing unit 223 and the sensor circuit unit 224 will be described in detail with reference to FIG. 5. The sensing unit 223 is provided on the upper surface of the substrate 222, and the sensor circuit unit 224 is provided on the lower surface of the substrate 222. FIG. 5A illustrates a top surface of the substrate 222 and FIG. 5B illustrates a bottom surface of the substrate 222, and FIG. 5C illustrates a sensing unit 223 and a sensor circuit unit (FIG. 5A). 224) is a schematic diagram showing the electrical connection relationship clearly.
기판(222)은 유연(flexible) 기판일 수 있으며, 예컨대 폴리마이드(polymide) 막으로 이루어질 수 있으나, 이러한 재료로 한정되는 것은 아니다.The substrate 222 may be a flexible substrate, for example, but may be made of a polymide film, but is not limited thereto.
센싱부(223)는 기판(222) 상에 형성된 복수개의 구동전극(223a) 및 이미지 수신전극(223b)을 포함한다. 구동전극(223a) 및 이미지 수신전극(223b)은 도전체 라인으로 구성될 수 있다.The sensing unit 223 includes a plurality of driving electrodes 223a and image receiving electrodes 223b formed on the substrate 222. The driving electrode 223a and the image receiving electrode 223b may be formed of conductor lines.
구동전극(223a)은 센서회로부(224)로부터 구동신호를 전달받아 이미지 수신전극(223b) 측으로 신호를 송출한다. 이미지 수신전극(223b)은 구동전극(223a)으로부터 사용자(정확히는 사용자의 손가락)를 거쳐 전달되는 신호를 수신한다.The driving electrode 223a receives the driving signal from the sensor circuit unit 224 and transmits a signal to the image receiving electrode 223b. The image receiving electrode 223b receives a signal transmitted from the driving electrode 223a via a user (previously, a user's finger).
기판(222)의 상면에 위치하는 이미지 수신전극(223b)의 일단부 부분은 가로 방향으로 길게 연장되도록 형성된다. 이러한 이미지 수신전극(223b)의 연장 방향에 대해 수직이 되도록 복수개의 구동전극(223a)이 서로 이격되어 평행하게 연장 형성된다(도 5의 (a) 참조). 이미지 수신전극(223b)은 기판(222)의 하면에서 센서회로부(224)와 전기적으로 연결된다.One end portion of the image receiving electrode 223b positioned on the upper surface of the substrate 222 is formed to extend in the horizontal direction. The plurality of driving electrodes 223a are spaced apart from each other so as to be perpendicular to the direction in which the image receiving electrode 223b extends (see FIG. 5A). The image receiving electrode 223b is electrically connected to the sensor circuit unit 224 on the bottom surface of the substrate 222.
복수개의 구동전극(223a)의 일단부는 이미지 수신전극(223b)에서 소정의 거리만큼 이격되어 위치한다. 또한, 복수개의 구동전극(223a)의 타단부는 기판(222)의 하면에서 센서회로부(224)와 전기적으로 연결된다.One end of the plurality of driving electrodes 223a is spaced apart from the image receiving electrode 223b by a predetermined distance. In addition, the other ends of the plurality of driving electrodes 223a are electrically connected to the sensor circuit unit 224 on the bottom surface of the substrate 222.
도 5에 도시된 바와 같이, 구동전극(223a)과 이미지 수신전극(223b)은 이격되어 있으며, 구동전극(223a)에서 송신된 구동신호는 사용자를 거쳐 이미지 수신전극(223b)에서 수신된다. 이때 사용자의 손가락에 위치한 지문골 또는 지문산의 유무에 따른 전계 변화를 측정하여 지문의 인식이 가능하게 된다.As shown in FIG. 5, the driving electrode 223a and the image receiving electrode 223b are spaced apart from each other, and the driving signal transmitted from the driving electrode 223a is received by the image receiving electrode 223b via a user. At this time, it is possible to recognize the fingerprint by measuring the electric field change according to the presence or absence of the fingerprint bone or fingerprint acid located on the user's finger.
첨부된 도면에서는 구동전극(223a)을 9개만 표시하였으나, 이는 예시적인 것으로 예컨대 200개의 구동전극을 설치할 수 있다. 복수개의 구동전극(223a)에 시분할한 구동신호를 공급하고, 이미지 수신전극(223b)으로부터 신호를 순차적으로 수신받아, 한 라인의 지문정보를 입력받을 수 있게 된다. 사용자가 지문센서(220)에 대해 손가락을 슬라이딩하는 경우에는, 전술한 지문정보를 스택(stack)함으로써, 하나의 전체적인 지문 이미지가 얻어지게 된다.In the accompanying drawings, only nine driving electrodes 223a are displayed, but this is merely an example, and 200 driving electrodes may be installed. A time-divided driving signal is supplied to the plurality of driving electrodes 223a, and the signals are sequentially received from the image receiving electrode 223b to receive a line of fingerprint information. When the user slides his or her finger with respect to the fingerprint sensor 220, by stacking the above-described fingerprint information, one overall fingerprint image is obtained.
한편, 지문센서(200)는 구동전극 보다 이미지 수신전극이 더 많게 구현될 수도 있다. 이때는 구동전극으로부터 인가된 구동신호에 응답하여 복수의 이미지 수신전극이 지문골 또는 지문산의 유무에 따른 전계변화를 측정하여 지문의 인식이 가능하게 된다.On the other hand, the fingerprint sensor 200 may be implemented with more image receiving electrode than the driving electrode. In this case, in response to the driving signal applied from the driving electrode, the plurality of image receiving electrodes measure the electric field change depending on the presence or absence of the fingerprint bone or the fingerprint acid, thereby enabling the recognition of the fingerprint.
다시 도 5의 (b) 및 (c)를 참조하면, 센서회로부(224)는 외부와 전기적으로 연결되는 외부 인터페이스 연결라인(225)을 가질 수 있다. 외부 인터페이스 연결라인(225)은 전술한 연결부(221) 상에 마련되며, 예컨대, 유에스비(USB: Universal Serial Bus) 또는 에스피아이(SPI: Serial Peripheral Interface) 연결라인일 수 있다.Referring again to FIGS. 5B and 5C, the sensor circuit unit 224 may have an external interface connection line 225 electrically connected to the outside. The external interface connection line 225 is provided on the connection unit 221 described above, and may be, for example, a universal serial bus (USB) or a serial peripheral interface (SPI) connection line.
연결부(221)는 유연 기판(22)에 일체로 형성되며, 따라서 가요성을 가진다. 연결부(221)는 지문센서 모듈(200)로부터 돌출 형성된 형상을 가지며, 연결부(221)가 가요성을 지니기 때문에 연결부(221)를 크게 휘어 그 선단(221a)을 접착제(500)를 써서 베이스 기판(100)의 하면에 연결할 수 있다(도 3 참조). 접착제(500)는 예컨대 이방성 도전 필름(ACF: Anisotropic Conductive Film)으로 이루어질 수 있다.The connecting portion 221 is formed integrally with the flexible substrate 22 and thus has flexibility. The connection part 221 has a shape protruding from the fingerprint sensor module 200, and since the connection part 221 is flexible, the connection part 221 is bent greatly, and the tip 221a is used as an adhesive 500 to form a base substrate ( 100 may be connected to the bottom surface (see FIG. 3). The adhesive 500 may be made of, for example, an anisotropic conductive film (ACF).
이상 설명한 바와 같이, 지문센서(220)는 COF(Chip-On-Flex) 방식으로 구현될 수 있다. 특히 기판(222)의 상면에는 센싱부(223), 즉 구동전극(223a)과 이미지 수신전극(223b) 만을 형성하고, 기판(222)의 하면에는 센싱부(223)와 연결되는 센서회로부(224)를 설치함으로써, 전체적인 외형을 컴팩트하게 구성하는 것이 가능해진다. 또한, 기판(222)의 상면에 센서회로부를 마련하지 않음으로써, 지문센서 모듈(200) 상에 글래스를 설치하는 것이 보다 용이하게 되는데, 이는 스마트폰과 같은 휴대용 전자기기에서 특히 유용한 효과이다. 또한, 종래와 달리 지문센서(220)를 유연 기판 상에 구현하면서도 구동 전극용 금속 베젤을 반드시 필요로 하지는 않게 됨으로써, 지문센서 모듈, 나아가 전자기기의 유연화에 도움이 될 뿐만 아니라, 비용적인 면에서도 유리하게 된다.As described above, the fingerprint sensor 220 may be implemented in a chip-on-flex method. In particular, the sensing unit 223, that is, only the driving electrode 223a and the image receiving electrode 223b is formed on the upper surface of the substrate 222, and the sensor circuit unit 224 connected to the sensing unit 223 on the lower surface of the substrate 222. ), The overall appearance can be made compact. In addition, by not providing a sensor circuit on the upper surface of the substrate 222, it is easier to install the glass on the fingerprint sensor module 200, which is a particularly useful effect in a portable electronic device such as a smart phone. In addition, unlike the related art, the fingerprint sensor 220 is implemented on a flexible substrate, but does not necessarily require a metal bezel for driving electrodes, thereby helping to soften the fingerprint sensor module and even electronic devices, and in terms of cost. Is advantageous.
지문센서(220)는 기본적으로 지문의 감지 기능을 가진다. 이를 위해 지문센서(220)는 지문의 특징점(예를 들면, 'Y' 지점과 같이 지문이 갈라지는 부분 등)에 대한 정보를 따로 저장해두고, 이러한 특징점을 비교하여 지문의 일치 여부 등을 감지할 수 있다. 이러한 경우, 지문 감지에 걸리는 시간이 단축될 수 있고, 프로세서의 단순화를 통해 소형화가 이루어질 수 있으므로, 전자기기에 대한 장착성이 향상될 수 있다.The fingerprint sensor 220 basically has a function of detecting a fingerprint. To this end, the fingerprint sensor 220 may store information on the feature points of the fingerprint (for example, the part where the fingerprint is divided, such as the 'Y' point), and compare the feature points to detect whether the fingerprints match. have. In this case, the time required for fingerprint detection can be shortened, and miniaturization can be achieved through the simplification of the processor, so that the mountability to the electronic device can be improved.
한편, 지문센서(220)는 지문 감지 기능과 함께 포인터 조작 기능을 동시에 가질 수 있다. 즉, 지문센서(220)는 사용자 지문 이미지의 시간에 따른 변화를 감지하고, 그 움직임을 기초로 커서와 같은 포인터를 움직이는 포인터 조작 기능을 포함할 수 있다.Meanwhile, the fingerprint sensor 220 may have a pointer manipulation function together with a fingerprint detection function. That is, the fingerprint sensor 220 may include a pointer manipulation function that detects a change over time of the user fingerprint image and moves a pointer such as a cursor based on the movement.
다시 도 3을 참조하면, 베젤(230)은 지문센서(220)의 측면에 위치하여 지문센서(220)의 테두리를 이룬다. 따라서, 사용자는 베젤(230)을 통해 휴대용 전자기기에서 지문센서 모듈(200)이 위치한 영역을 인식할 수 있게 된다. 베젤(230)은 지문센서(220)의 가장자리의 전부 또는 일부를 덮도록 형성될 수 있다. 베젤(230)은 수지 또는 고무제로 이루어지는 것이 일반적이나, 특별히 이에 제한되지는 않는다.Referring to FIG. 3 again, the bezel 230 is positioned at the side of the fingerprint sensor 220 to form an edge of the fingerprint sensor 220. Accordingly, the user may recognize the area where the fingerprint sensor module 200 is located in the portable electronic device through the bezel 230. The bezel 230 may be formed to cover all or part of the edge of the fingerprint sensor 220. The bezel 230 is generally made of resin or rubber, but is not particularly limited thereto.
베젤(230)은 브라켓(210)과 일체화되도록 형성될 수 있다. 예컨대 베젤(230)과 브라켓(210)은 사출에 의해 동시에 형성될 수 있다. 여기서 베젤(230)은 지문센서(220)의 유연성을 가지는 부분을 지지하도록 형성될 수 있다. 구체적으로 베젤(230)은, 센서회로부(224)에 의해 생기는 단차로 인해 유연한 기판(222)이 요동하는 것을 방지하도록, 기판(222)을 고정시킬 수 있는 지지대 역할을 수행할 수 있다.The bezel 230 may be formed to be integrated with the bracket 210. For example, the bezel 230 and the bracket 210 may be formed at the same time by injection. Here, the bezel 230 may be formed to support a portion having flexibility of the fingerprint sensor 220. In detail, the bezel 230 may serve as a support for fixing the substrate 222 to prevent the flexible substrate 222 from shaking due to the step caused by the sensor circuit unit 224.
코팅층(240)은 베젤(230) 및 지문센서(220)의 상측에 위치한다. 코팅층(240)은 복수개의 층(layer)으로 구현될 수 있으며, 이러한 층의 기능에 따라 여러가지 작용을 하게 된다.The coating layer 240 is positioned above the bezel 230 and the fingerprint sensor 220. The coating layer 240 may be implemented as a plurality of layers, and various functions are performed according to the function of the layer.
예컨대, 코팅층(240)은 도료를 이용한 박막으로 이루어진 후가공층(미도시)을 포함할 수 있다. 후가공층은 예컨대, 인쇄 공정, 컬러 스프레이 공정, 프라이머(primer) 공정, 또는 자외선 코팅(UV coating) 공정 등에 의해 형성될 수 있다.For example, the coating layer 240 may include a post-processing layer (not shown) made of a thin film using paint. The post-processing layer may be formed by, for example, a printing process, a color spray process, a primer process, or an UV coating process.
코팅층(240)은 지문센서 모듈(200)에 컬러를 구현하거나, 지문센서 모듈(200)의 상면측 강도를 보강하는 등의 다양한 기능을 하게 된다. 특히, 지문센서(220)가 유연 기판의 상면 및 하면에 위치한 센싱부(223)와 센서회로부(224)를 포함하므로, 상기와 같은 강도 보강의 효과는 더욱 유용하다. 지문센서(220)가 적절한 지문 센싱을 할 수 있도록 하기 위해서는, 후가공층을 포함하는 코팅층(240)의 두께가 0.1mm 이하가 되는 것이 바람직한 것으로 알려져 있다.The coating layer 240 may implement a variety of functions such as implementing colors in the fingerprint sensor module 200 or reinforcing the upper surface strength of the fingerprint sensor module 200. In particular, since the fingerprint sensor 220 includes a sensing unit 223 and a sensor circuit unit 224 disposed on the upper and lower surfaces of the flexible substrate, the effect of the strength reinforcement as described above is more useful. In order to enable the fingerprint sensor 220 to perform appropriate fingerprint sensing, it is known that the thickness of the coating layer 240 including the post-processing layer is 0.1 mm or less.
브라켓(210)의 하면에는 돔 스위치(250)가 구비될 수 있다. 즉, 돔 스위치(250)는 브라켓(210)과 베이스 기판(100)의 사이에 위치할 수 있다. 돔 스위치(250)는 사용자의 누름 여부를 감지하여 원하는 정보 또는 명령을 입력받을 수 있는 기계적 또는 전기적 방식의 스위칭 소자이며, 이러한 돔 스위치(250)를 구비함으로써 사용자는 포인팅된 메뉴나 아이콘을 스위칭을 통해 편리하게 선택할 수 있게 된다.The lower surface of the bracket 210 may be provided with a dome switch 250. That is, the dome switch 250 may be located between the bracket 210 and the base substrate 100. The dome switch 250 is a mechanical or electrical switching element capable of detecting a user's pressing and receiving a desired information or command. The dome switch 250 includes a user to switch a pointed menu or icon. This makes it easy to choose.
이상으로, 본 발명의 일실시예에 의한 입력장치(10)의 구성을 설명하였으나, 본 발명이 이러한 실시예로 한정되는 것은 아니다. 예컨대, 도 6에는 본 발명의 다른 실시예에 의한 휴대용 전자기기용 입력장치의 단면도가 도시되어 있으며(도 2의 (b)의 A-A`선을 따른 단면도), 도 7에는 도 6의 지문센서의 사시도가 도시되어 있다.As described above, the configuration of the input device 10 according to an embodiment of the present invention has been described, but the present invention is not limited to this embodiment. For example, FIG. 6 is a cross-sectional view of an input device for a portable electronic device according to another embodiment of the present invention (sectional view along the line AA ′ of FIG. 2B), and FIG. 7 is a perspective view of the fingerprint sensor of FIG. 6. Is shown.
앞의 실시예와 달리, 본 실시예에 의한 지문센서 모듈(200)에서는 돔 스위치(250)가 베이스 기판(100)의 하측에 위치한다. 또한, 지문센서(220)에 있어서 연결부(221)가 지문센서 모듈(200)의 측면 측으로 돌출되어 있다. 따라서, 앞의 실시예에서와 같이 지문센서(220)의 연결부(221)가 베이스 기판(100)의 하면에 연결되는 대신에, 베이스 기판(100)의 하면에는 돔 스위치(250)가 배치되고, 지문센서(220)의 연결부(221)는 베이스 기판(100)의 상면, 구체적으로는 지문센서 모듈(200)과 복합 감지센서(300)가 위치한 영역의 사이 부분에 접착제를 이용하여 결합된다.Unlike the previous embodiment, in the fingerprint sensor module 200 according to the present embodiment, the dome switch 250 is positioned below the base substrate 100. In addition, in the fingerprint sensor 220, the connection part 221 protrudes toward the side of the fingerprint sensor module 200. Therefore, instead of connecting the connecting portion 221 of the fingerprint sensor 220 to the lower surface of the base substrate 100 as in the previous embodiment, the dome switch 250 is disposed on the lower surface of the base substrate 100, The connection part 221 of the fingerprint sensor 220 is coupled to the upper surface of the base substrate 100, specifically, between a region where the fingerprint sensor module 200 and the composite sensor 300 are located by using an adhesive.
다음으로, 복합 감지센서(300)에 대해서 도 8 및 도 9를 참조하여 구체적으로 설명하기로 한다.Next, the composite sensor 300 will be described in detail with reference to FIGS. 8 and 9.
도 8은 본 발명의 일실시예에 의한 휴대용 전자기기용 입력장치에 구비된 복합 감지센서가 정전용량 변화를 감지하는 과정을 나타낸 모식도이며, 도 9는 본 발명의 일실시예에 의한 휴대용 전자기기용 입력장치에 구비된 복합 감지센서가 자기장 변화를 감지하는 과정을 나타낸 모식도이다.8 is a schematic diagram illustrating a process of detecting a capacitance change by a composite sensor provided in an input device for a portable electronic device according to an embodiment of the present invention, Figure 9 is an input for a portable electronic device according to an embodiment of the present invention It is a schematic diagram showing a process of detecting a magnetic field change by the composite sensor provided in the device.
전술한 바와 같이, 본 발명의 일실시예에 의한 복합 감지센서(300)는 사용자의 손가락이나 이를 대신하는 도전성 펜과 같은 도전체의 접근 또는 접촉을 정전용량의 변화를 통해 감지할 수 있으며, 이와 더불어 전자기펜의 접근 또는 접촉을 자기장을 통해 감지할 수 있다. 즉, 복합 감지센서(300)는 정전용량 방식의 센싱 및 전자기 유도 방식의 센싱이 모두 가능하다. 따라서, 사용자는 전자기펜을 이용하여 디스플레이부의 터치스크린을 사용하는 중에, 연속하여 별도의 기능키를 역시 전자기펜을 이용하여 조작할 수 있게 된다.As described above, the composite sensor 300 according to an embodiment of the present invention may detect the approach or contact of a conductor such as a conductive pen instead of a user's finger or the like through a change in capacitance. In addition, the magnetic pen can detect the approach or contact of the electronic pen. That is, the composite sensor 300 may be both capacitive sensing and electromagnetic inductive sensing. Therefore, while the user uses the touch screen of the display unit by using the electronic pen, the user can continuously operate a separate function key by using the electronic pen.
도 8에는 정전용량 방식의 센싱 과정이 도시되어 있다. 복합 감지센서(300)는 기판 상에 마련된 송신전극(310) 및 수신전극(320)을 포함한다. 송신전극(310)은 별도의 회로부로부터 구동신호를 전달받아 외부로 송출하며, 수신전극(320)은 상기 구동신호가 도전체(사용자)를 거쳐 전달되는 것을 수신한다. 사용자(U)가 복합 감지센서(300)에 충분한 정도로 접근하거나 접촉한 경우, 송신전극(310)으로부터 수신전극(320)으로 형성되는 전계(E)가 사용자가 접근 또는 접촉하지 않은 경우와 상이하게 되고, 이는 정전용량의 변화로서 인식된다. 따라서, 사용자(U)가 터치를 했는지 여부를 감지할 수 있게 된다.8 illustrates a capacitive sensing process. The complex sensor 300 includes a transmitting electrode 310 and a receiving electrode 320 provided on a substrate. The transmitting electrode 310 receives a driving signal from a separate circuit unit and transmits the driving signal to the outside, and the receiving electrode 320 receives the driving signal transmitted through a conductor (user). When the user U approaches or touches the composite detection sensor 300 to a sufficient degree, the electric field E formed from the transmitting electrode 310 to the receiving electrode 320 is different from the case where the user does not approach or contact. This is recognized as a change in capacitance. Therefore, it is possible to detect whether the user U makes a touch.
도 9에는 전자기펜을 이용한 전자기 유도 방식의 센싱 과정이 도시되어 있다. 여기서 전자기펜은 전자기파를 이용한 펜으로서, EMR펜, 자기펜 등을 총칭하는 것이다.9 illustrates a sensing process of an electromagnetic induction method using an electromagnetic pen. Herein, the electromagnetic pen is a pen using electromagnetic waves, and generally refers to an EMR pen and a magnetic pen.
복합 감지센서(300)는 전자기의 센싱을 위해 기판 상에 마련된 루프 코일(330) 및 자기센서(340)를 포함한다. 루프 코일(330)에 전류가 도통되면 자기장(M)이 발생하며, 이 자기장(M)이 전자기펜(600)에 의해 흡수된다.The composite sensor 300 includes a loop coil 330 and a magnetic sensor 340 provided on a substrate for sensing of electromagnetic. When a current is conducted to the loop coil 330, a magnetic field M is generated, and the magnetic field M is absorbed by the electromagnetic pen 600.
전자기펜(600)은 콘덴서(610) 및 코일(620)을 포함하며, 흡수한 자기장(M)을 소정의 주파수로 방출할 수 있다. 전자기펜(600)에 의해 방출된 자기장(M)은 복합 감지센서(300)의 루프 코일(330)에 의해 다시 흡수될 수 있으며, 이에 따라 자기센서(340)는 전자기펜(600)이 충분한 정도로 접근 또는 접촉하였는지 여부를 감지할 수 있게 된다. 루프 코일(330)을 다수 설치할 경우 전자기펜(600)의 접근/접촉 여부뿐만 아니라, 전자기펜(600)이 어느 위치에 접근/접촉하였는지 여부까지 센싱할 수 있게 된다.The electromagnetic pen 600 includes a condenser 610 and a coil 620 and may emit the absorbed magnetic field M at a predetermined frequency. The magnetic field M emitted by the electromagnetic pen 600 may be absorbed again by the loop coil 330 of the composite sensor 300, and accordingly, the magnetic sensor 340 may have a sufficient magnitude for the electromagnetic pen 600. It is possible to detect whether or not access or contact. When a plurality of loop coils 330 are installed, it is possible to sense not only whether the electromagnetic pen 600 approaches / contacts, but also whether the electromagnetic pen 600 approaches / contacts.
이상과 같은 지문센서 모듈(200) 및 복합 감지센서(300)를 베이스 기판(100) 상에 설치한 이후에는, 그 상측에 글라스를 부착하거나, 또는 전자기기에 실장하는 등의 공정이 이어질 수 있다. 이에 대한 설명은 본 발명의 범위를 벗어나므로 생략하기로 한다.After installing the fingerprint sensor module 200 and the composite sensor 300 as described above on the base substrate 100, a process such as attaching a glass on the upper side or mounting the electronic device may be continued. . Description thereof will be omitted since it is outside the scope of the present invention.
이상 설명한 바와 같이, 본 발명의 실시예에 따르면, 동일한 베이스 기판 상에 지문센서 모듈 및 복합 감지센서를 배치함으로써, 지문센서와 복합 감지센서를 구비한 일체화된 입력장치 및 이를 포함하는 휴대용 전자기기를 제공할 수 있게 된다. 특히, 지문센서를 사용하여 보안 기능을 가지면서도 사용이 편리한 홈키를 제공할 수 있게 된다. 또한, 정전용량 방식과 전자기펜 방식의 입력이 모두 가능한 복합 감지센서를 사용함으로써, 우수한 사용자 경험을 주는 기능키를 제공할 수 있게 된다.As described above, according to an embodiment of the present invention, by placing the fingerprint sensor module and the composite sensor on the same base substrate, the integrated input device having a fingerprint sensor and the composite sensor and a portable electronic device including the same It can be provided. In particular, it is possible to provide a home key that has a security function and is easy to use using a fingerprint sensor. In addition, by using a composite sensor capable of capacitive type and electromagnetic pen type input, it is possible to provide a function key giving an excellent user experience.
전술한 본 발명의 설명은 예시를 위한 것이며, 본 발명이 속하는 기술분야의 통상의 지식을 가진 자는 본 발명의 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 쉽게 변형이 가능하다는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시예들은 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다. 예를 들어, 단일형으로 설명되어 있는 각 구성 요소는 분산되어 실시될 수도 있으며, 마찬가지로 분산된 것으로 설명되어 있는 구성 요소들도 결합된 형태로 실시될 수 있다.The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.
본 발명의 범위는 후술하는 특허청구범위에 의하여 나타내어지며, 특허청구범위의 의미 및 범위 그리고 그 균등 개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.The scope of the present invention is represented by the following claims, and it should be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the present invention.
Claims (10)
- 지문센서 모듈 및 복합 감지센서를 포함하는 휴대용 전자기기용 입력장치로서,An input device for a portable electronic device including a fingerprint sensor module and a composite sensor,상기 지문센서 모듈은,The fingerprint sensor module,브라켓과,Bracket,상기 브라켓의 상측에 위치하며, 유연 기판에 형성된 센싱부와 상기 센싱부와 전기적으로 연결된 센서회로부를 가지는 지문센서와,A fingerprint sensor positioned on an upper side of the bracket and having a sensing unit formed on a flexible substrate and a sensor circuit unit electrically connected to the sensing unit;상기 지문센서의 상측에 위치하는 코팅층을 포함하며,It includes a coating layer located on the upper side of the fingerprint sensor,상기 복합 감지센서는,The composite sensor,도전체의 접근 또는 접촉을 정전용량의 변화를 통해 감지하는 전극과,An electrode that senses the approach or contact of a conductor through a change in capacitance,전자기펜에 의해 방출된 자기장을 감지하여 전자기펜의 접근 또는 접촉을 감지하는 루프 코일 및 전자기 센서를 포함하며,It includes a loop coil and an electromagnetic sensor to sense the magnetic field emitted by the electromagnetic pen to detect the approach or contact of the electronic pen,상기 지문센서 모듈 및 상기 복합 감지센서는 동일한 베이스 기판 상에 위치하는 것을 특징으로 하는 입력장치.And the fingerprint sensor module and the composite sensor are located on the same base substrate.
- 제1항에 있어서,The method of claim 1,상기 지문센서 모듈은 돔 스위치를 더 포함하며,The fingerprint sensor module further includes a dome switch,상기 돔 스위치는, 상기 브라켓과 상기 베이스 기판의 사이에 위치하거나, 또는 상기 베이스 기판의 하측에 위치하는 것을 특징으로 하는 입력장치.The dome switch is located between the bracket and the base substrate, or the input device, characterized in that located below the base substrate.
- 제1항에 있어서,The method of claim 1,상기 복합 감지센서는, 상기 베이스 기판 상에서 상기 지문센서 모듈의 양측에 복수개가 이격되어 설치되는 것을 특징으로 하는 입력장치.The composite sensor, the input device, characterized in that a plurality of spaced apart on both sides of the fingerprint sensor module is installed on the base substrate.
- 제1항에 있어서,The method of claim 1,상기 지문센서는, 외부 인터페이스 연결라인이 형성되며 가요성을 가지는 연결부를 포함하며,The fingerprint sensor, the external interface connection line is formed and includes a flexible connection portion,상기 연결부는 접착제를 통해 상기 베이스 기판의 상면 또는 하면에 연결되는 것을 특징으로 하는 입력장치.The connecting unit is connected to the upper or lower surface of the base substrate through an adhesive.
- 제4항에 있어서,The method of claim 4, wherein상기 접착제는 이방성 도전 필름으로 이루어진 것을 특징으로 하는 입력장치.The adhesive is an input device, characterized in that made of an anisotropic conductive film.
- 제1항에 있어서,The method of claim 1,상기 센싱부는 상기 유연 기판의 상면에 위치하며, 상기 센서회로부는 상기 유연 기판의 하면에 위치하는 것을 특징으로 하는 입력장치.The sensing unit is located on the upper surface of the flexible substrate, the sensor circuit unit is characterized in that located on the lower surface of the flexible substrate.
- 제1항에 있어서,The method of claim 1,상기 센싱부는 상기 유연 기판의 상면에 위치하는 이미지 수신전극 및 복수개의 구동전극으로 이루어지며,The sensing unit includes an image receiving electrode and a plurality of driving electrodes positioned on an upper surface of the flexible substrate,상기 이미지 수신전극은 상기 센서회로부에 전기적으로 연결되며,The image receiving electrode is electrically connected to the sensor circuit,상기 복수개의 구동전극의 일단부는 상기 이미지 수신전극에서 미리 정해진 거리만큼 이격되어 위치하며, 상기 복수개의 구동전극의 타단부는 상기 센서회로부에 전기적으로 연결되는 것을 특징으로 하는 입력장치.One end of the plurality of drive electrodes is positioned spaced apart from the image receiving electrode by a predetermined distance, the other end of the plurality of drive electrodes is input device, characterized in that electrically connected to the sensor circuit.
- 제1항에 있어서,The method of claim 1,상기 코팅층은, 도료를 이용한 박막으로 이루어진 후가공층을 포함하는 것을 특징으로 하는 입력장치.The coating layer is an input device, characterized in that it comprises a post-processing layer made of a thin film using a paint.
- 제1항 내지 제8항 중 어느 한 항에 의한 입력장치를 구비한 휴대용 전자기기.A portable electronic device provided with the input device according to any one of claims 1 to 8.
- 베이스 기판과,Base substrate,상기 베이스 기판 상에 위치하며, 사용자의 지문을 인식하는 지문센서 및 사용자의 손가락의 누름을 인식하는 돔 스위치를 갖는 지문센서 모듈과,Located on the base substrate, the fingerprint sensor module having a fingerprint sensor for recognizing a user's fingerprint and a dome switch for recognizing the user's finger press;상기 베이스 기판 상에서 상기 지문센서 모듈과 이격되어 위치하며, 도전체 및 전자기펜의 접근 또는 접촉을 감지하는 복합 감지센서를 포함하는 것을 특징으로 하는 휴대용 전자기기용 입력장치.The input device for a portable electronic device, characterized in that located on the base substrate spaced apart from the fingerprint sensor module, a composite sensor for sensing the approach or contact of the conductor and the electronic pen.
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