WO2017142288A1 - Boîtier de capteur - Google Patents

Boîtier de capteur Download PDF

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Publication number
WO2017142288A1
WO2017142288A1 PCT/KR2017/001603 KR2017001603W WO2017142288A1 WO 2017142288 A1 WO2017142288 A1 WO 2017142288A1 KR 2017001603 W KR2017001603 W KR 2017001603W WO 2017142288 A1 WO2017142288 A1 WO 2017142288A1
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WO
WIPO (PCT)
Prior art keywords
unit
sensor
output value
sensor unit
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2017/001603
Other languages
English (en)
Korean (ko)
Inventor
최용선
김도형
서귀범
전성수
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crucialtec Co Ltd
Original Assignee
Crucialtec Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020160055253A external-priority patent/KR101809437B1/ko
Application filed by Crucialtec Co Ltd filed Critical Crucialtec Co Ltd
Publication of WO2017142288A1 publication Critical patent/WO2017142288A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W72/00—Interconnections or connectors in packages
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W74/00—Encapsulations, e.g. protective coatings
    • H10W74/10—Encapsulations, e.g. protective coatings characterised by their shape or disposition
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W74/00—Encapsulations, e.g. protective coatings
    • H10W74/40—Encapsulations, e.g. protective coatings characterised by their materials

Definitions

  • the present invention relates to a sensor package, and more particularly to a sensor package with improved security.
  • portable electronic devices have been provided with various additional functions that utilize personal information such as mobile banking as well as communication functions such as a telephone or text message transmission service. Accordingly, the need for a locking device for a portable electronic device is more important.
  • a locking device through fingerprint recognition is mounted on a portable electronic device.
  • the fingerprint sensor may be integrated with a physical function key.
  • the fingerprint sensor is a sensor that detects a human finger fingerprint.
  • the fingerprint sensor is configured to undergo user registration or authentication through a fingerprint sensor, thereby protecting data stored in the portable electronic device and preventing security accidents.
  • the fingerprint sensor may be manufactured in the form of a module including peripheral components or structures, and thus may be effectively mounted on various electronic devices.
  • the fingerprint sensor can be converted into a code by using the features of each fingerprint.
  • user authentication using the fingerprint may be generalized.
  • the fingerprint sensor cannot distinguish between fake fingerprints and actual biometric fingerprints.
  • an optical fingerprint sensor module provided in a device having a larger size than a portable electronic device has a relatively weak constraint on the module size, thereby adding a separate component to implement a detection function for counterfeit fingerprint.
  • Korean Patent Publication No. 10-1436786 discloses a fake fingerprint discrimination apparatus using a separate light source.
  • the forgery fingerprint discrimination apparatus of Korean Patent Publication No. 10-1436786 has a problem that is difficult to be applied to small devices such as portable electronic devices.
  • Figure 1 is an exemplary view showing a conventional sensor package
  • Figure 1 (a) is a sensor package before the polishing process
  • Figure 1 (b) is an exemplary view showing a sensor package after the polishing process.
  • the sensor package 10 may include a base substrate 20, a fingerprint sensor 30, a light source module 40, a biometric module 50, and an encapsulation unit 60. have.
  • the sensor package 10 performs user authentication in a state where the fingerprint sensor 30, the light source module 40, and the biometric module 50 are provided on the base substrate 20.
  • the fingerprint sensor 30 for recognizing the user's fingerprint on the base substrate 20 is electrically coupled.
  • the light source module 40 and the biometric module 50 are electrically coupled on the base substrate 20.
  • the light source module 40 and the biometric module 50 detect the biometric information of the user. That is, the sensor package 10 recognizes the user by analyzing the characteristics of the light received by the biometric module 50 through the object, the light irradiated toward the object from the light source module 40.
  • the light source module 40 may include a light source part 41 and a first optical protection part 42.
  • the light source part 41 is made to irradiate light toward the object
  • the first optical protection part 42 is made to protect the light source part 41.
  • the first optical protection part 42 is usually made of an optical epoxy molding compound (EMC) which can smoothly transmit light from the light source part 41 to an object.
  • EMC optical epoxy molding compound
  • the biometric module 50 may include a biometric sensor 51 and a second optical protector 52. At this time, the biometric sensor 51 is made to receive the light irradiated from the light source unit 41 and passed through the object, the second optical protection unit 52 is made to protect the biometric sensor 51.
  • the second optical protection unit 52 may be made of an optical EMC that can transmit light smoothly like the first optical protection unit 42.
  • the encapsulation unit 60 may include the fingerprint sensor 30, the light source module 40, and the like.
  • the biometric module 50 is covered.
  • the encapsulation part 60 is made to be shielded from light unlike the first optical protection part 42 and the second optical protection part 52. That is, the encapsulation unit 60 is configured to prevent light from being transmitted to the fingerprint sensor 30. Therefore, the encapsulation unit 60 prevents malfunction of the fingerprint sensor 30 due to the generation of photoelectrons due to external light.
  • the encapsulation part 60 may be made of a black semiconductor EMC.
  • a sensing process of adjusting the sensing clearance between the fingerprint sensor 30 and the user's finger through a polishing process is controlled.
  • the encapsulation part 60, the first optical protection part 42, and the second optical protection part 52 are removed together so that the top surface of the sensor package 10 is flat during the polishing process.
  • the first optical protection part 42 and the second optical protection part 52 having the same physical properties will be described in brief terms of the optical protection part.
  • a step is generated between the encapsulation unit 60 and the optical protection units 42 and 52 in the sensor package 10 after the polishing process is performed.
  • Such a step between the encapsulation part 60 and the optical protection parts 42 and 52 has a problem that the same step is generated on the upper surface of the coating layer even when a coating layer is further formed on the top. As a result, appearance defects occur in the sensor package 10.
  • Figure 2 is an exemplary view showing another conventional sensor package.
  • FIG. 2 illustrates the first optical protection part 42 and the removal of the encapsulation part 60, the first optical protection part 42 and the second optical protection part 52 together in the polishing process, unlike in FIG. 1. Only the sealing part 60 was removed in the range which the 2nd optical protection part 52 is not exposed.
  • the sensor package 10 using a single encapsulation unit 60 in a state in which the fingerprint sensor 30, the light source unit 41 and the biometric sensor 51 is mounted on the base substrate 20.
  • the encapsulation unit 60 is a semiconductor EMC
  • the encapsulation unit 60 is an optical EMC.
  • the direct light is transmitted between the light source unit 41 and the biometric sensor 51, so that it is difficult to accurately measure the biometrics, and there is a high possibility of malfunction of the fingerprint sensor 30.
  • the controller (not shown) provided in the conventional sensor package 10 is configured to control the light source module 40 and the biometric module 50 together. That is, the controller simultaneously controls the light source module 40 and the biometric module 50 to analyze the biometric information of the user.
  • the controller needs to control the light source module 40 and the biometric module 50 at the same time, so that the controller may be overloaded.
  • the processing speed of the control unit becomes slow, and the time taken for the sensor package 10 to authenticate a user becomes long.
  • control unit provided in the conventional sensor package 10 to be mounted on the sensor package 10 in a state in which the correction value is set according to the material and color of the cover (not shown) provided on the upper surface of the encapsulation unit 60. do.
  • the controller since the light output value received from the light source module 40 to the biometric module 50 through the user varies depending on the material and color of the cover part, the controller is in a state where the correction value is adjusted according to the material and color of the cover part. It is mounted to the sensor package 10.
  • the conventional sensor package 10 when the material and color of the cover part are determined, only the controller in which the correction value is set accordingly is mounted on the sensor package 10. Accordingly, the conventional sensor package 10 has a problem in that the manufacturing process is complicated and the manufacturing time is long.
  • the technical problem of the present invention for solving the above problems is to provide a sensor package with improved security.
  • an embodiment of the present invention is a base substrate; A first sensor unit provided on the base substrate to detect a fingerprint; A light source unit provided on the base substrate and irradiating light to an object; A second sensor unit provided on the base substrate and configured to receive light emitted from the light source unit to pass through the object to obtain a light output value, and to measure a light characteristic from the obtained light output value; An encapsulation part covering the first sensor part, the light source part, and the second sensor part; A cover part provided on an upper surface of the encapsulation part; And a controller configured to receive an optical output value from the second sensor unit, wherein when the user registers a fingerprint, the controller performs registration setting for automatically adjusting the optical output value acquired by the second sensor unit to a target optical output value. Provide the package.
  • the registration setting of the controller may adjust the light amount of the light source unit or adjust the light output value received by the second sensor unit.
  • the registration setting of the control unit may automatically adjust the light output value received by the second sensor unit to a target light output value even if the material and color of the cover unit are different.
  • the controller when registering a fingerprint of the user, may register the authentication range of the light output value based on the target light output value.
  • the control unit may recognize as a fake fingerprint if the light output value obtained by the second sensor unit does not fall within the authentication range of the pre-registered light output value.
  • the controller may apply the same registered settings when registering the fingerprint of the user.
  • the second sensor unit may control the light source unit by the operation of the control unit.
  • control unit may control the second sensor unit and the light source unit together.
  • the first sensor unit is provided between the light source unit and the second sensor unit, the upper surface of the first sensor unit, the light source unit and the second sensor unit may have the same height.
  • control unit forgery of the fingerprint measured by comparing the fingerprint information measured by the first sensor unit and the optical characteristics measured by the second sensor unit with the registered fingerprint information and optical characteristics. Can be identified.
  • the optical properties may be one or more of pulse wave, heart rate, electrocardiogram, electrocardiogram, oxygen saturation, light quantity, color temperature, wavelength and polarization components.
  • the encapsulation portion may be adjusted the light transmittance to prevent the light is directly transmitted from the light source unit to the second sensor unit.
  • the composition of the encapsulation portion, epoxy resin 3 ⁇ 13 wt%, curing agent 3 ⁇ 7 wt%, curing catalyst 0.1 ⁇ 0.3 wt%, colorant 0.06 ⁇ 0.08 wt% and the rest includes a filler
  • the filler may be made of silica, and the colorant may be made of carbon black.
  • the second sensor unit may divide the received light output value by a predetermined value and then transmit the divided light output value to the controller.
  • the second sensor unit is provided with a processing unit, and the processing unit adds the light output values measured a predetermined number of times within a predetermined time, and then transmits the summed light output values to the control unit. Can be.
  • the control unit upon fingerprint registration of the user, is configured to register automatically for adjusting the obtained light output value to the target light output value. That is, the controller automatically adjusts the light output value acquired by the second sensor unit through the auto gain to the target light output value when registering the fingerprint of the user regardless of the material and the color of the cover unit.
  • the control unit may be automatically adjusted to obtain the same target light output value.
  • the sensor package having a different specification can be forged fingerprint identification under the same conditions.
  • the second sensor unit controls the operation of the light source unit only when measuring the optical characteristics of the object.
  • power consumption of the light source portion can be minimized.
  • the load generated in the controller may be reduced since only the second sensor unit may be controlled without controlling the second sensor unit and the light source unit at the same time. As such, the load generated on the controller is lowered, so that the processing speed of the controller is improved and the user authentication time can be reduced.
  • the optical characteristic is made of one or more of pulse wave, heart rate (blood flow), electrocardiogram, electrocardiogram, oxygen saturation, quantity of light, color temperature, wavelength, and polarization component, enhanced security function can be implemented.
  • the sensor package is made to cover only a single encapsulation portion whose light transmittance is adjusted in a state in which the first sensor portion, the light source portion, and the second sensor portion are electrically connected on the base substrate.
  • the top surface of the sensor package in the polishing process can be manufactured flat without a step.
  • the encapsulation portion provided in the sensor package prevents light from being directly transmitted from the light source portion to the second sensor portion through adjustment of the light transmittance, and at the same time, malfunction of the first sensor portion occurs due to noise generated by photoelectrons. Will be prevented. Therefore, the sensor package can effectively measure fingerprint information and optical characteristic information.
  • the sensor package does not need to include the conventional optical EMC and the semiconductor EMC, the structure of the sensor package is simple, and the manufacturing process is easy.
  • the sensor package can measure the optical characteristic along with the fingerprint information of the object, and compare the measured fingerprint information and the optical characteristic with the registered fingerprint information and the optical characteristic, a fake fingerprint can be identified. Can be improved.
  • 1 is an exemplary view showing a conventional sensor package.
  • Figure 2 is an exemplary view showing another conventional sensor package.
  • FIG. 3 is a state diagram used in the sensor package according to an embodiment of the present invention.
  • FIG 4 is an exemplary view of a sensor package according to an embodiment of the present invention.
  • FIG. 5 is a flowchart illustrating a process in which a control unit receives an optical output value according to an embodiment of the present invention.
  • FIG. 6 is an exemplary view illustrating an operating state of a light source unit and a second sensor unit according to an embodiment of the present invention.
  • FIG. 7 is an exemplary view schematically showing the light output value transmitted to the second sensor unit according to an embodiment of the present invention.
  • FIG. 3 is a state diagram of use of a sensor package according to an embodiment of the present invention
  • FIG. 4 is an exemplary view of a sensor package according to an embodiment of the present invention.
  • the sensor package 1000 may include a base substrate 100, a first sensor unit 200, a light source unit 300, a second sensor unit 400, and an encapsulation unit 500. Can be.
  • the sensor package 1000 may be provided in an electronic device such as a mobile phone, a smart phone, a PDA, a tablet PC, a notebook computer, and a portable sound player (MP3 player).
  • the sensor package 1000 is configured to measure biometric information.
  • the base substrate 100 may be a substrate through which electrical signal information is transmitted to the first sensor unit 200, the light source unit 300, the second sensor unit 400, and the like.
  • the base substrate 100 may be, for example, a printed circuit board (PCB) or a flexible printed circuit board (FPCB).
  • the first sensor unit 200 may be provided on the base substrate 100.
  • the first sensor unit 200 may detect biometric information, for example, fingerprint information.
  • the first sensor unit 200 may have a sensing pixel, and the sensing pixel may be formed in various forms.
  • the sensing pixel may have a sensing area arranged in an array form.
  • the first sensor unit 200 detects fingerprint information
  • various methods such as a capacitive type, an optical type, an ultrasonic type, a heat sensing type, and a non-contact type, may be applied.
  • the first sensor may be used for convenience of description.
  • the unit 200 will be described as capacitive.
  • the capacitive first sensor unit 200 may form a capacitance with the object P (finger).
  • each sensing pixel of the first sensor unit 200 may form capacitance in relation to a user's finger.
  • the first sensor unit 200 may find a difference in capacitance according to the fingerprint of the user's finger on the corresponding pixel.
  • the first sensor unit 200 may detect a change in capacitance according to whether a user's finger approaches or moves, and may detect a fingerprint of a user's finger contacted or closely spaced.
  • the first sensor unit 200 may be a biometric track pad (BTP) having a fingerprint sensing function and a pointer manipulation function for detecting a fingerprint.
  • the first sensor unit 200 may have a pointer manipulation function of detecting whether the user's finger approaches or input information or capacitance according to the movement, and moves a pointer such as a cursor based on the movement.
  • the first sensor unit 200 and the base substrate 100 may be electrically connected by a bonding wire (not shown).
  • the bonding wire may electrically connect the electrode of the first sensor unit 200 and the electrode of the base substrate 100.
  • Such a bonding wire may be covered by the encapsulation part 500.
  • the first sensor unit 200 that senses the fingerprint of the object P may transmit a driving signal toward the user's finger by the electrical connection configuration by the bonding wire, and in response to the driving signal sent by the user's finger Fingerprint information may be received.
  • the bonding wire may be a gold wire, but is not limited thereto.
  • the first sensor unit 200 may be formed in various types such as a wafer level package (WLP), a chip on board (COB), a quad flat package (QFP), and a ball grid array (BGA).
  • WLP wafer level package
  • COB chip on board
  • QFP quad flat package
  • BGA ball grid array
  • the first sensor unit 200 may not be electrically connected to the base substrate 100 by a bonding wire, but may be attached to the upper portion of the base substrate 100 by surface mounting technology (SMT).
  • SMT surface mounting technology
  • the first sensor unit 200 may be electrically connected to the base substrate 100 through various methods, such as by attaching through an anisotropic conductive film bonding (ACF) bonding.
  • ACF anisotropic conductive film bonding
  • the light source 300 is provided on the base substrate 100, it is made to irradiate light toward the object (P).
  • the light source unit 300 may irradiate various lights.
  • the light source unit 300 may be configured to irradiate any one of infrared ray (IR) light, very high frequency (VHF) light, and radio frequency (RF) light.
  • IR infrared ray
  • VHF very high frequency
  • RF radio frequency
  • the light source unit 300 will be described with reference to an IR light source capable of irradiating IR light.
  • the light source unit 300 is installed upward to irradiate IR light toward the object P.
  • the light source unit 300 may be electrically coupled to the base substrate 100 through a bonding wire like the first sensor unit 200, or may be attached through various methods such as surface mount technology or ACF bonding.
  • the second sensor unit 400 is provided on the base substrate 100.
  • the second sensor unit 400 may include a photodiode, which is an optical sensor that converts light energy into electrical energy, and the second sensor unit 400 is irradiated from the light source unit 300 to be the object P. After passing through the light, the optical properties are measured from the received light.
  • the optical characteristics may include at least one of a pulse wave (PPG: Photo PlethysmoGraph), a heart rate (HR), an electrocardiogram, an electrocardiogram, an oxygen saturation, an amount of light, a color temperature, a wavelength, and a polarization component.
  • PPG PulplethysmoGraph
  • HR heart rate
  • electrocardiogram electrocardiogram
  • oxygen saturation an amount of light
  • color temperature a color temperature
  • wavelength a polarization component
  • polarization component polarization component
  • the second sensor unit 400 may include a sensor (for example, PPG sensor) capable of measuring pulse wave from the received light and a sensor (for example, HR sensor) capable of measuring heart rate (blood flow). It may be provided together.
  • the second sensor unit 400 is irradiated from the light source unit 300 and passes through the object P to receive pulse waves, heartbeats, electrocardiograms, electrocardiograms, oxygen saturation, amount of light, color temperature, wavelength, polarization components, and the like. It will measure the various optical properties of.
  • the second sensor unit 400 when the second sensor unit 400 includes a sensor capable of measuring pulse waves or a sensor capable of measuring heart rate (blood flow), the second sensor unit 400 is irradiated from the light source unit 300 to the object. After passing through (P), the received light can be used to measure pulse wave or heart rate (blood flow). That is, the second sensor unit 400 may measure pulse wave or heartbeat (blood flow) by converting the received light after being irradiated from the light source unit 300 and passing through the object P into a pulse signal.
  • the amplitude of the pulse signal converted from the second sensor unit 400 may be selectively amplified according to the user's requirements. This is to more accurately measure the pulse wave or heart rate (blood flow) of the object P through amplitude amplification of the pulse signal.
  • FIG. 5 is a flowchart illustrating a process of receiving a light output value by a control unit according to an embodiment of the present invention
  • FIG. 6 is an exemplary view showing an operating state of a light source unit and a second sensor unit according to an embodiment of the present invention.
  • the second sensor unit 400 is configured to control the light source unit 300. That is, when the second sensor unit 400 measures the optical characteristics of the object P, the second sensor unit 400 controls the operation of the light source unit 300. As such, since the light source unit 300 is operated only when measuring the optical characteristics by the second sensor unit 400, power consumption of the light source unit 300 may be minimized.
  • the control unit 700 transmits an operation command for the optical characteristic request to the second sensor unit 400
  • the second sensor unit 400 according to the operation command received from the control unit 700
  • the light source unit 300 It will control the operation of. That is, the light source unit 300 emits light according to the operation command of the second sensor unit 400. At this time, the light source unit 300 emits light at predetermined time intervals.
  • the light source unit 300 irradiates light primarily toward the object P and is turned off.
  • the second sensor unit 400 is irradiated from the light source unit 300 to receive the light passing through the object (P).
  • the second sensor unit 400 converts the received light into a digital signal. That is, the second sensor unit 400 converts the light received by the second sensor unit 400 through the analog-to-digital converter (ADC) into an optical output value that is a digital data value. As such, the second sensor unit 400 measures various optical characteristics through the light output value obtained from the received light. Details of such optical characteristics will not be described in detail as described above.
  • ADC analog-to-digital converter
  • the second sensor unit 400 transmits the light output value to the control unit 700.
  • the light source unit 300 after the light source unit 300 irradiates the light toward the object P, it may be one cycle until the second sensor unit 400 transmits the light output value to the control unit 700.
  • the light source unit 300 irradiates light toward the object P again, and then turns off.
  • the second sensor unit 400 obtains another light output value and then transmits the light output value to the controller 700.
  • the light source unit 300 does not continuously irradiate light in the process of transmitting the obtained light output value to the control unit 700 after the second sensor unit 400 obtains the light output value. That is, the light source 300 emits light at predetermined time intervals. Therefore, power consumption of the light source 300 may be reduced.
  • the second sensor unit 400 may transmit the light output value to the control unit 700 every cycle. After collecting the light output values obtained in four cycles of four cycles, the collected light output values may be transmitted to the controller 700.
  • the control unit 700 according to the present invention is unlike the conventional control unit for controlling the light source unit 300 and the second sensor unit 400 at the same time because it is possible to obtain the light output value only by controlling the second sensor unit 400
  • the load generated in the controller 700 can be minimized. Therefore, the processing speed of the controller 700 is increased, and the user authentication time can be reduced.
  • control unit 700 is not necessarily limited to controlling only the second sensor unit 400, and of course, the second sensor unit 400 and the light source unit 300 may be simultaneously controlled.
  • the controller 700 analyzes the forged fingerprint from the light output value obtained from the second sensor unit 400.
  • the controller 700 compares the fingerprint information transmitted from the first sensor unit 200 and the optical property transmitted from the second sensor unit 400 with the registered fingerprint information and the optical property to determine whether the fingerprint is forged. Can be identified.
  • the process of registering the fingerprint information and the light output value, which are criteria for determining whether the user is forged, is registered in the controller 700 for the convenience of description, and the controller 700 at the time of fingerprint authentication of the user.
  • the fingerprint information and the light output value for authenticating the user in the state in which the registered fingerprint information and the light output value are stored are referred to as a process of obtaining by the controller 700.
  • the controller 700 stores and registers fingerprint information and light output values measured by the first sensor unit 200 and the second sensor unit 400 when a user registers a fingerprint.
  • the fingerprint information and the light output value registered in advance are the criteria for analyzing whether or not the object P to be measured is forged.
  • control unit 700 performs registration setting so that the light output value acquired by the second sensor unit 400 is automatically adjusted to the target light output value.
  • control unit 700 performs registration setting for automatically adjusting the light output value acquired by the second sensor unit 400 to the target light output value when the user's fingerprint is registered through autogain.
  • the light output value obtained by the second sensor unit 400 may be an amount of light. That is, the control unit 700 may determine whether the fingerprint is forged by comparing the light output value acquired by the second sensor unit 400 with the light output value previously registered in the control unit 700 in addition to the fingerprint.
  • the controller 700 automatically adjusts the light output value obtained as the target light output value.
  • the control unit 700 automatically adjusts the light output value of 40 obtained by the second sensor unit 400 to the target light output value of 80 through the registration setting. That is, the controller 700 doubles the light output value obtained by the second sensor unit 400 through the auto gain.
  • the registration settings stored in the control unit 700 is equally applied to the fingerprint authentication of the user. That is, when the registration setting is stored in the control unit 700 to double the light output value acquired by the second sensor unit 400 when the user registers the fingerprint, the control unit 700 may control the second sensor even when the user authenticates the fingerprint. The light output value obtained by the unit 400 is doubled.
  • the registration setting of the controller 700 may be configured to adjust the light amount of the light source unit 300 or to selectively adjust the light output value received by the second sensor unit 400.
  • the control unit 700 is automatically adjusted to obtain the same target light output value is different specifications Even in the sensor package 1000, a fake fingerprint identification may be performed under the same conditions.
  • control unit 700 of the present invention unlike the control unit provided in the conventional sensor package, when the user's fingerprint registration, the auto gain is made to the target light output value specified for the light output value received by the second sensor unit 400 Accordingly, the controller 700 may be used in various sensor packages 1000 regardless of the material and the color of the cover 600.
  • the light output value received by the second sensor unit 400 varies according to the transmittance according to the color of the cover 600. That is, IR black has better light transmittance than white and white has better light transmittance than silver. As such, the light output value received from the light source unit 300 to the second sensor unit 400 through the object P varies according to the material and color of the cover unit 600.
  • the controller 700 according to the present invention may automatically adjust the light output value obtained by the second sensor unit 400 to a designated target light output value when the user registers a fingerprint regardless of the material and color of the cover 600.
  • the manufacturing process of the sensor package 1000 is simple, so that the manufacturing time can be shortened.
  • the controller 700 when the user registers a fingerprint, when the controller 700 sets the target light output value to 80, the controller 700 sets an authentication range of the light output value based on the target light output value. That is, the controller 700 may set the light output value of 70 to 90, which may cause an error in the light output value, when the fingerprint is authenticated by the user as the authentication range.
  • the error range of the light output value set by the controller 700 is merely an example for description, and the authentication range of the light output value may be set to various ranges.
  • control unit 700 sets the light output value of 70 to 90 as the authentication range
  • the control unit 700 In the light output value, it is determined that the fingerprint is not a fake fingerprint.
  • control unit 700 may further measure various optical characteristics such as pulse wave, heart rate, electrocardiogram, etc. in addition to the light amount from the light output value obtained by the second sensor unit 400. As such, when the sensor package 1000 measures two or more optical characteristics, it may be determined whether the fingerprint forgery is more accurate.
  • the control unit 700 may perform the second sensor even when the user authenticates the fingerprint.
  • the light output value obtained by the unit 400 is doubled. That is, when the light output value obtained by the second sensor unit 400 is 72 when the user authenticates the fingerprint, the light output value of 72 obtained by the second sensor unit 400 is a value doubled by the controller 700.
  • the control unit 700 is determined to be a fake fingerprint.
  • the second sensor unit 400 may be configured to accurately transmit the received light output value to the control unit 700. That is, the second sensor unit 400 is provided with a divider (not shown), and the user divides the light output value transmitted to the second sensor unit 400 from the divider to a predetermined value, and then divides the divided light output value to the outside. It may be made to transmit to the control unit 700 which is a device.
  • the second sensor unit 400 having the division unit transmits the correct light output value to the control unit 700, thereby preventing the wrong light output value from being transferred to the control unit 700.
  • the conventional second sensor unit is not provided with such a divider, and thus there is a problem in that the light output value is not accurately transmitted to the control unit 700.
  • the light transmitted to the second sensor unit passes through the object P from the light source unit 300, and then the reflected light and the light source unit transmitted to the second sensor unit.
  • the light output value of the reflected light transmitted to the second sensor unit is 95 and the light output value of the direct light is 25, the light output value transmitted to the second sensor unit is 120.
  • the second sensor unit when the maximum light output value that the second sensor unit can transmit to the control unit 700 is 100, the second sensor unit does not transmit the light output value of 120 to the control unit 700 but transmits the light output value of 100. That is, the second sensor unit may cause a problem of transmitting an incorrect light output value to the controller 700.
  • the second sensor unit 400 of the present invention is provided with a divider, and the second sensor unit 400 is configured to transmit the correct light output value to the control unit 700.
  • the user may adjust the light output value transmitted to the second sensor unit 400 to be selectively divided. That is, the user may set to divide the light output value transmitted to the second sensor unit 400 by a predetermined value. In this case, the division may divide the light output value transmitted to the second sensor unit 400 into various values such as 1/2, 1/3, and 1/4.
  • the light output value transmitted to the second sensor unit 400 is 120. If the division unit is set to divide the light output value transmitted to the second sensor unit 400 by 1/2, the second sensor unit 400 divides the light output value of 120 by 1/2 and then divides the light output value of 60 by 1/2. Transmission to the control unit 700.
  • the controller 700 may receive the correct light output value.
  • the controller 700 may be provided with adjustment value information of the division unit, and the controller 700 may know the light output value actually measured from the second sensor unit 400.
  • the second sensor unit 400 is provided with a processing unit (not shown), it is possible to lower the communication power consumption between the second sensor unit 400 and the control unit 700. That is, the processing unit provided in the second sensor unit 400 does not transmit each light output value transmitted to the second sensor unit 400 in real time, but measures a predetermined number of times within a predetermined time and then measures The light output value is transmitted to the control unit 700.
  • the load of the second sensor unit 400 can be lowered, and the power consumption of the second sensor unit 400 can be reduced.
  • FIG. 7 is an exemplary view schematically showing the light output value transmitted to the second sensor unit according to an embodiment of the present invention.
  • the second sensor unit 400 measures the light output value transmitted to the second sensor unit 400 at a predetermined time and then measures the measured light output value in an external device. To the control unit 700.
  • FIG. 7A is an exemplary view schematically showing the light output value transmitted to the second sensor unit according to the comparative example
  • FIG. 7B is light transmitted to the second sensor unit 400 according to the embodiment.
  • the general second sensor unit according to the comparative example is configured to transmit the light output value transmitted to the second sensor unit to the control unit 700 in real time through the operation of the light source unit 300.
  • the second sensor unit is configured to transmit the respective light output values measured at the first to t8 times t8 to the controller 700.
  • the second sensor unit 400 sums the light output values measured a predetermined number of times with respect to the light output values transmitted to the second sensor unit 400 through the operation of the light source unit 300.
  • the aggregated light output value is transmitted to the control unit 700.
  • the second sensor unit 400 may be used.
  • Is 2 the light output value measured at the first time point t1, 4 is the light output value measured at the second time point t2, 4 is the light output value measured at the third time point t3, and 4th time t4.
  • Each light output value of 6, which is the measured light output value, is added up. That is, the processor adds each of the light output values measured in the first section S1 from the first time point t1 to the fourth time point t4, and then adds up the summed light output values 16 (2 + 4 + 4 + 6). ) Is transmitted to the control unit 700.
  • the second sensor unit 400 transmits the light output value measured in the second section S2 to the controller 700.
  • the second sensor unit 400 does not transmit each light output value transmitted to the second sensor unit 400 in real time, and after measuring the predetermined number of times within a predetermined time, only the measured light output value. As the transmission to the control unit 700 is performed, the load of the second sensor unit 400 may be lowered and the power consumption of the second sensor unit 400 may be effectively reduced.
  • the second sensor unit 400 may be electrically coupled to the base substrate 100 in the same manner as the first sensor unit 200.
  • the second sensor unit 400 is spaced apart from the light source unit 300 at a predetermined interval. That is, as the light source unit 300 and the second sensor unit 400 are spaced at a predetermined interval, the light source unit 300 and the second sensor unit 400 may prevent the accuracy of optical characteristics from being degraded due to direct light transmission. Can be.
  • the direct light refers to light in which light emitted from the light source unit 300 is directly guided to the second sensor unit 400 through the encapsulation unit 500.
  • the second sensor unit 400 may be prevented from generating cross-talk due to the direct light transmitted from the light source unit 300.
  • the second distance L which is a distance between the light source unit 300 and the second sensor unit 400, is 400 ⁇ m or more. It is preferable to fall. Because, when the second distance L between the light source unit 300 and the second sensor unit 400 is less than 400 ⁇ m, the second sensor unit 400 may be affected by the direct light emitted from the light source unit 300. Because.
  • the first sensor unit 200 is disposed between the light source unit 300 and the second sensor unit 400. It is preferable. That is, the first sensor unit 200 may block the direct light guided from the light source unit 300 to the second sensor unit 400 through the encapsulation unit 500 in the middle.
  • the first sensor unit 200 does not necessarily need to be disposed between the light source unit 300 and the second sensor unit 400, and the light source unit 300 and the second sensor unit 400 have a predetermined second distance ( Of course, it can be arranged in various positions in the range of L).
  • the first sensor unit 200, the light source unit 300, and the second sensor unit 400 provided on the base substrate 100 may have the same height with respect to the base substrate 100. That is, the distances from the top surfaces of the first sensor unit 200, the light source unit 300, and the second sensor unit 400 to the top surface of the encapsulation unit 500 may be the same in the polishing process. Therefore, the first sensor unit 200 senses the fingerprint of the object P while the encapsulation unit 500 covers the first sensor unit 200, the light source unit 300, and the second sensor unit 400 as a whole.
  • the light source unit 300 irradiates light onto the object P, and the second sensor unit 400 may effectively receive the light reflected from the object P.
  • the first sensor unit 200, the light source unit 300, and the second sensor unit 400 have the same height with respect to the base substrate 100, so that fingerprint sensing and optical property information can be easily obtained. Can be done.
  • the heights of the first sensor unit 200, the light source unit 300, and the second sensor unit 400 do not necessarily have to be the same height, but may be made of various heights within a range in which fingerprint sensing and optical characteristic information can be obtained. Of course.
  • the encapsulation part 500 covers the first sensor part 200, the light source part 300, and the second sensor part 400 provided on the base substrate 100 to protect various electrical components.
  • conventional encapsulation is made of semiconductor EMC.
  • the encapsulation may include a filler, a resin, a curing agent, a flame retardant and a coloring agent.
  • the filler may be made of fused silica, form a spherical shape, the average size is 12 ⁇ m, the maximum size may be 55 ⁇ m. As such, the content of the filler in the encapsulation may be 88.5 wt%.
  • an epoxy resin may be used as the resin, and a curing agent may be a hydrophobic curing agent.
  • the colorant is 0.6 ⁇ 0.8 wt% of the encapsulation.
  • the present invention prevents light from being directly transmitted from the light source unit 300 to the second sensor unit 400 by adjusting the light transmittance of the encapsulation unit 500, and at the same time, the first sensor unit generates noise due to photoelectrons.
  • the malfunction of the fingerprint recognition of the 200 is prevented from occurring, and the fingerprint information and the optical characteristic information are effectively measured.
  • the composition of the encapsulation part 500 having the light transmittance adjusted is 3 to 13 wt% of an epoxy resin, 3 to 7 wt% of a curing agent, 0.1 to 0.3 wt% of a curing catalyst, 0.06 to 0.08 wt% of a coloring agent, and the rest of the filler. It may include.
  • the epoxy resin is at least one selected from biphenyl epoxy resin, novolac epoxy resin, dicyclopentadienyl epoxy resin, bisphenol epoxy resin, terpene epoxy resin, aralkyl epoxy resin, multifunctional epoxy resin, naphthalene epoxy resin, halogenated epoxy resin It may be one compound.
  • the content of this epoxy resin is 3 to 13 wt%.
  • the curing agent is selected from phenolic novolac resin, cresol novolac resin, multifunctional phenolic resin, aralkyl phenolic resin, terpene phenolic resin, dicyclopentadienyl phenolic resin, naphthalene phenolic resin and halogenated phenolic resin. At least one compound.
  • the content of such a curing agent is 3 to 7 wt%.
  • the curing catalyst may be phosphines or amines, and the content of the curing catalyst is 0.1 to 0.3 wt%.
  • the colorant may be composed of carbon black, and the content of the colorant is 0.06 to 0.08 wt%.
  • the colorant is a very important composition for adjusting the light transmittance of the encapsulation part 500.
  • the content of the colorant is less than 0.06 wt%, the light transmittance is so high that the first sensor part recognizes a fingerprint due to noise generated by photoelectrons.
  • the content of the colorant is more than 0.08 wt%, the light transmittance is too low to accurately check the optical properties.
  • the content of the colorant included in the encapsulation portion of the present invention is preferably made in a range of 10% compared to the content of the colorant included in the conventional encapsulation portion.
  • the content of the colorant provided in the encapsulation part 500 is 0.06 to 0.08 wt%, so that the sensor package 1000 may be smoothly subjected to fingerprint sensing and optical property inspection.
  • the filler is a composition constituting the encapsulation part 500 in addition to the epoxy resin, the curing agent, the curing catalyst and the colorant, and the filler may be made of silica.
  • the encapsulation part 500 is not limited to the above-described composition, and any composition may be used as long as the light transmittance may be adjusted to effectively perform fingerprint sensing and optical property inspection of the sensor package 1000.
  • the encapsulation part 500 may be polished in a state in which the first sensor part 200, the light source part 300, and the second sensor part 400 provided on the base substrate 100 are entirely covered.
  • the top surface of the encapsulation part 500 removed through the polishing process may be manufactured flat without a step. That is, the problem of the step difference generated during the polishing process of the sensor package having the conventional optical EMC and semiconductor EMC having different physical properties can be solved.
  • the cover part 600 may be further provided on an upper surface of the encapsulation part 500.
  • the cover unit 600 may perform various functions such as implementing colors in the sensor package 1000 or reinforcing the strength of the sensor package 1000.
  • the cover part 600 may be provided on the encapsulation part 500, and may cover the first sensor part 200, the light source part 300, and the second sensor part 400.
  • the cover part 600 may be made of a material having excellent durability and appearance.
  • the cover part 600 may include any one or more of glass, sapphire, zirconium, and a transparent resin.
  • various glass substrates such as a soda lime glass substrate, an alkali free glass substrate, and a tempered glass substrate, may be included.
  • the transparent resin may include acrylic and the like.
  • the cover part 600 may include an optical transparent adhesive 610, a PET film 620, a color paint layer 630, and a protective layer 640.
  • the cover part 600 may be formed in the order of the optical transparent adhesive 610, PET film 620, the color paint layer 630 and the protective film layer 640.
  • OCA optically clear adhesive
  • PET polyethylene terephthalate
  • the protective layer 640 may be a ceramic coating layer including a UV protective layer or ceramic.
  • the cover unit 600 is made so that the light irradiated from the light source unit 300 is transmitted to the object (P), the light reflected from the object (P) can be smoothly transmitted to the second sensor unit 400 and at the same time
  • the first sensor unit 200 is formed so that fingerprint sensing of the object P is performed smoothly.
  • the sensor package 1000 may be provided with a control unit 700.
  • the control unit 700 is coupled to the main substrate 1 and is electrically connected to the first sensor unit 200, the light source unit 300, and the second sensor unit 400.
  • the controller 700 may receive the fingerprint information measured by the first sensor unit 200 and the optical characteristics measured by the second sensor unit 400. As such, the controller 700 may identify whether the fingerprint is counterfeited by comparing the transmitted fingerprint information and the optical characteristic with the registered fingerprint information and the optical characteristic.
  • the controller 700 may register and store fingerprint information and optical characteristics measured by the first sensor unit 200 and the second sensor unit 400, and the registered fingerprint information and optical characteristics are those of an authenticated user. Can be handled.
  • the controller 700 compares the fingerprint information with the registered fingerprint information and the optical characteristic to identify whether the fingerprint is forged. Done. That is, when at least one of the fingerprint information and the optical characteristic to be measured is different from the registered fingerprint information and the optical characteristic, the controller 700 considers that the fingerprint to be measured is not the fingerprint of the authenticated user.
  • controller 700 may control the first sensor unit 200 and the second sensor unit 400 so that fingerprint information measurement and optical property measurement of the object P may be sequentially performed or simultaneously. Can be.
  • the controller 700 compares the optical characteristics measured by the second sensor unit 400 and the fingerprint information transmitted from the first sensor unit 200 with the registered optical characteristics and fingerprint information, and forgeries the fingerprints measured. By identifying whether or not to increase the security of the sensor package (1000).

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Image Input (AREA)

Abstract

La présente invention concerne, selon un mode de réalisation, un boîtier de capteur comprenant : un substrat de base ; une première unité de capteur, placée sur le substrat de base, permettant de détecter une empreinte digitale ; une unité de source de lumière, placée sur le substrat de base, permettant d'irradier de la lumière sur un objet ; une seconde unité de capteur, placée sur le substrat de base, permettant de recevoir la lumière irradiée par l'unité de source de lumière et ayant traversé l'objet pour obtenir une valeur de sortie de lumière, et de mesurer une caractéristique de lumière à partir de la valeur de sortie de lumière obtenue ; une unité de scellement destinée à recouvrir la première unité de capteur, l'unité de source de lumière et la seconde unité de capteur ; une unité de couvercle placée sur une surface supérieure de l'unité de scellement ; et une unité de commande permettant de recevoir la valeur de sortie de lumière à partir de la seconde unité de capteur, et, lors de l'enregistrement de l'empreinte digitale d'un utilisateur, l'unité de commande établissant l'enregistrement permettant de régler automatiquement la valeur de sortie de lumière obtenue par la seconde unité de capteur à une valeur de sortie de lumière cible.
PCT/KR2017/001603 2016-02-15 2017-02-14 Boîtier de capteur Ceased WO2017142288A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR20160017493 2016-02-15
KR10-2016-0017493 2016-02-15
KR1020160055253A KR101809437B1 (ko) 2016-02-15 2016-05-04 센서 패키지
KR10-2016-0055253 2016-05-04
KR10-2017-0017633 2017-02-08
KR1020170017633A KR20170095737A (ko) 2016-02-15 2017-02-08 센서 패키지

Publications (1)

Publication Number Publication Date
WO2017142288A1 true WO2017142288A1 (fr) 2017-08-24

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Application Number Title Priority Date Filing Date
PCT/KR2017/001603 Ceased WO2017142288A1 (fr) 2016-02-15 2017-02-14 Boîtier de capteur

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WO (1) WO2017142288A1 (fr)

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CN110444513A (zh) * 2018-05-03 2019-11-12 日月光半导体制造股份有限公司 半导体装置封装及其制造方法
CN115148352A (zh) * 2021-03-30 2022-10-04 维沃移动通信有限公司 电子设备、生物检测控制方法及装置

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KR20140029081A (ko) * 2012-08-31 2014-03-10 크루셜텍 (주) 지문센서 패키지 및 이를 구비한 휴대용 전자기기
KR20150004294A (ko) * 2013-07-02 2015-01-12 아바고 테크놀로지스 제너럴 아이피 (싱가포르) 피티이 리미티드 광 근접 센서의 적외선 감쇠 또는 차단 층

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JP2003144420A (ja) * 2001-11-09 2003-05-20 Nec Corp 指紋画像入力装置及びそれを用いた電子機器
KR20080095333A (ko) * 2007-04-24 2008-10-29 주식회사 유니온커뮤니티 모조지문을 판별할 수 있는 모조지문판단장치 및 그판단방법
KR20110065690A (ko) * 2009-12-10 2011-06-16 연세대학교 산학협력단 위조 지문 검출 장치 및 그 방법
KR20140029081A (ko) * 2012-08-31 2014-03-10 크루셜텍 (주) 지문센서 패키지 및 이를 구비한 휴대용 전자기기
KR20150004294A (ko) * 2013-07-02 2015-01-12 아바고 테크놀로지스 제너럴 아이피 (싱가포르) 피티이 리미티드 광 근접 센서의 적외선 감쇠 또는 차단 층

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110444513A (zh) * 2018-05-03 2019-11-12 日月光半导体制造股份有限公司 半导体装置封装及其制造方法
CN115148352A (zh) * 2021-03-30 2022-10-04 维沃移动通信有限公司 电子设备、生物检测控制方法及装置

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