KR20170000103A - Finger print recognition apparatus - Google Patents

Finger print recognition apparatus Download PDF

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Publication number
KR20170000103A
KR20170000103A KR1020150088848A KR20150088848A KR20170000103A KR 20170000103 A KR20170000103 A KR 20170000103A KR 1020150088848 A KR1020150088848 A KR 1020150088848A KR 20150088848 A KR20150088848 A KR 20150088848A KR 20170000103 A KR20170000103 A KR 20170000103A
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KR
South Korea
Prior art keywords
fingerprint
light
contact
light source
recognition device
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Application number
KR1020150088848A
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Korean (ko)
Inventor
김재고
Original Assignee
주식회사 엔에프디
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Priority to KR1020150088848A priority Critical patent/KR20170000103A/en
Publication of KR20170000103A publication Critical patent/KR20170000103A/en

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    • G06K9/00013—
    • G06K9/0004—

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  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

The present invention relates to a fingerprint recognition device, comprising: a fingerprint contact unit which is in contact with a fingerprint object; a light source which emits light to a surface of the fingerprint object on the boundary of the fingerprint contact unit when the fingerprint object is in contact therewith to irradiate the fingerprint object; and an image sensor which obtains a luminous fingerprint image from the fingerprint object to convert into an electric fingerprint image signal.

Description

[0001] FINGER PRINT RECOGNITION APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a fingerprint recognition apparatus, and more particularly, to a fingerprint recognition apparatus suitable for recognizing a fingerprint that can be utilized as biometric information using only a simplified light source structure.

2. Description of the Related Art In recent years, in fields such as access control, electronic commerce, financial transactions, smart phone security, personal PC security, etc. where biometrics authentication is required, Through these studies, authentication models using biometric information are applied to various fields.

As is well known, biometric information that can be used for personal authentication includes, for example, fingerprints, iris, retina, palm, vein, finger vein, face, etc. The present invention relates to improvement of fingerprint recognition.

1 is a structural view of a conventional optical fingerprint sensor that optically recognizes a fingerprint using a prism.

Referring to FIG. 1, light emitted from a light source 102 made of an LED or the like is diffused through a diffusion plate 104 and then irradiated to one side of a prism 106.

The light irradiated to one surface of the prism 106 is reflected through the surface of the finger 108 that is in contact with the contact surface of the prism 106 and is reflected to the other surface of the prism 106, Is focused through the lens 110 and is transmitted to the image sensor 112 to detect the fingerprint of the electrical signal.

However, since a conventional optical fingerprint sensor using a prism and a lens adopts an optical structure such as a prism and a lens, the structure is complicated, the thickness is thick, and relatively high manufacturing costs are incurred.

In addition, in the conventional optical fingerprint sensor, since the optical path between the light source and the fingerprint surface and the sensor is formed diagonally, distortion of the light occurs and the accuracy of the fingerprint image is deteriorated.

Korean Patent Publication No. 2011-0069998 (Publication Date: June 24, 2011)

The present invention proposes a fingerprint recognition method capable of accurately recognizing a fingerprint without applying a prism and a lens by emitting light directly to a fingerprint surface to obtain a luminous fingerprint image.

The problems to be solved by the present invention are not limited to those mentioned above, and another problem to be solved by the present invention can be clearly understood by those skilled in the art from the following description will be.

According to an aspect of the present invention, there is provided a fingerprint input device comprising: a fingerprint contact part for contacting a fingerprint object; A light source that emits light from an edge of the fingerprint contact portion to a surface of the fingerprint object to cause the fingerprint object to emit light when the fingerprint object is contacted; And an image sensor that acquires a light-emitting fingerprint image from the fingerprint object and converts the light-emitting fingerprint image into an electric fingerprint image signal.

The fingerprint contact portion of the present invention may be any one of a silicone tube, plastic, and glass material.

The light source of the present invention may be composed of a plurality of LEDs or OLEDs arranged at regular intervals along the edge of the fingerprint contact portion.

According to another aspect of the present invention, there is provided a fingerprint input device comprising: a fingerprint contact part for contacting a fingerprint object; A light source that emits light from the edge of the contact area to the surface of the fingerprint object when the fingerprint object is touched, thereby emitting the fingerprint object; And an image sensor that acquires a light-emitting fingerprint image from the fingerprint object and converts the light-emitting fingerprint image into an electric fingerprint image signal.

The fingerprint contact portion of the present invention may be any one of a silicone tube, plastic, and glass material.

The light source of the present invention is constituted by a plurality of LEDs or OLEDs arranged in a matrix structure of N ㅧ M on the entire surface of the fingerprint contact portion, and when the fingerprint object is contacted, an angle located inside the edge of the contact region The LED or OLED can emit light.

The present invention may further comprise a contact sensor for sensing a contact area of the fingerprint object.

The light source of the present invention is constituted by a plurality of LEDs or OLEDs arranged in a matrix structure of N ㅧ M on the entire surface of the fingerprint contact portion and is located outside the edge of the contact region when the fingerprint object is contacted Each LED or OLED can emit light.

The present invention may further comprise a contact sensor for sensing a contact area of the fingerprint object.

According to another aspect of the present invention, there is provided a fingerprint input device comprising: a fingerprint contact part for contacting a fingerprint object; A light source constituted by a plurality of LEDs or OLEDs arranged in a matrix structure of N? M on the entire surface of the fingerprint contact portion; A touch sensor that senses a contact area of the fingerprint object when the fingerprint object contacts the fingerprint contact; A light source control unit for controlling each of the LEDs or the OLED group located inside the edge of the contact region to emit light to emit light of the fingerprint object; And an image sensor that acquires a light-emitting fingerprint image from the fingerprint object and converts the light-emitting fingerprint image into an electric fingerprint image signal.

According to another aspect of the present invention, there is provided a fingerprint input device comprising: a fingerprint contact part for contacting a fingerprint object; A light source constituted by a plurality of LEDs or OLEDs arranged in a matrix structure of N? M on the entire surface of the fingerprint contact portion; A touch sensor that senses a contact area of the fingerprint object when the fingerprint object contacts the fingerprint contact; A light source control unit for controlling each LED or OLED group located outside the edge of the contact region to emit light to emit light of the fingerprint object; And an image sensor that acquires a light-emitting fingerprint image from the fingerprint object and converts the light-emitting fingerprint image into an electric fingerprint image signal.

According to another aspect of the present invention, there is provided a fingerprint input device comprising: a fingerprint contact part for contacting a fingerprint object; A light source constituted by a plurality of LEDs or OLEDs arranged in a matrix structure of N? M on the entire surface of the fingerprint contact portion; A touch sensor that senses a contact area of the fingerprint object when the fingerprint object contacts the fingerprint contact; A light source control unit for controlling each LED or OLED group located inside the edge of the contact region and each LED or OLED group located outside the edge of the contact region to simultaneously emit light to emit the fingerprint object; And an image sensor that acquires a light-emitting fingerprint image from the fingerprint object and converts the light-emitting fingerprint image into an electric fingerprint image signal.

The present invention can realize the simplification of the structure and the cost reduction of the fingerprint recognition device by emitting the light from the periphery where the fingerprint comes in contact directly to the fingerprint surface without obtaining the prism and the lens structure.

In addition, since the present invention applies a method of directly outputting light from a periphery where a fingerprint comes in contact with a fingerprint surface without using a prism and a lens structure to obtain a luminous fingerprint image, the thickness of the fingerprint recognition device can be remarkably reduced Which can further expand its application to micro devices.

1 is a structural view of a conventional optical fingerprint sensor that optically recognizes a fingerprint using a prism.
2 is a plan view of the fingerprint recognition device according to the first embodiment of the present invention.
3 is a sectional view of the fingerprint recognition device according to the first embodiment of the present invention.
4 is a block diagram of a control device for driving the fingerprint recognition device according to the first embodiment of the present invention.
5 is a plan view of the fingerprint recognition device according to the second embodiment of the present invention.
6 is a cross-sectional view of a fingerprint recognition device according to a second embodiment of the present invention.
7 is a plan view of a fingerprint recognition apparatus according to a modification of the second embodiment of the present invention.
8 is a plan view of a fingerprint recognition apparatus according to another modification of the second embodiment of the present invention.
FIG. 9 is a block diagram of a control device for driving the fingerprint recognition device according to the second embodiment of the present invention.

First, the advantages and features of the present invention, and how to accomplish them, will be clarified with reference to the embodiments to be described in detail with reference to the accompanying drawings. While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. It is to be understood that the following terms are defined in consideration of the functions of the present invention, and may be changed according to intentions or customs of a user, an operator, and the like. Therefore, the definition should be based on the technical idea described throughout this specification.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[Example 1]

FIG. 2 is a plan view of the fingerprint recognition device according to the first embodiment of the present invention, and FIG. 3 is a sectional view of the fingerprint recognition device according to the first embodiment of the present invention.

Referring to FIG. 2, the fingerprint recognizer 200 accepts fingerprints, which are biometric information for personal authentication (personal authentication). The fingerprint recognizer 200 is, for example, an office device Such as a TV, a TV remote control, a microwave oven, a washing machine, etc., a door lock device, a portable device such as a smart phone, a mobile phone, a smart pad, a notebook, A light source 204, and the like.

First, the fingerprint contact portion 202 is contacted with a fingerprint object such as a finger, and the fingerprint contact portion 202 may be any one of, for example, a silicone tube material, a plastic material, and a glass material.

Although not shown in the drawing, a contact sensor (touch sensor) for sensing that the fingerprint object is in contact with the fingerprint contact portion 202 is mounted inside the fingerprint contact portion 202, The signal may be transmitted to the light source control unit 404 of FIG. 4, which will be described later.

A light source 204 composed of a plurality of LEDs or OLEDs arranged at regular intervals is disposed at the edge of the fingerprint contact portion 202. The light source 204 is disposed on the fingerprint contact portion 202 And function to emit light to the surface of the fingerprint object to illuminate the fingerprint object when the fingerprint object (i.e., finger) is touched.

3, an image sensor 206 is disposed at the lower end of the fingerprint contact portion 202. The image sensor 206 detects the presence of the fingerprint object from the fingerprint object contacting the fingerprint contact portion 202, (E.g., an image of the finger itself having a fingerprint) and converting the fingerprint image signal into an electric fingerprint image signal. The fingerprint image signal generated by the fingerprint image signal may be used as a fingerprint authentication Module or the like.

That is, in the fingerprint recognition device of this embodiment, the light emitted from the light source disposed at the edge of the fingerprint abutting portion illuminates the surface of the finger contacting the fingerprint abutting portion so that the image (image) of the fingerprinted finger itself is projected onto the image sensor, Thus, the image sensor can acquire the fingerprint image.

Here, it is preferable to form (arrange) the distance (distance) between the fingerprint abutting portion 202 and the image sensor 206 to be as short as possible, in order to increase the precision of the image acquired by the image sensor.

FIG. 4 is a block diagram of a controller for driving the fingerprint recognition device according to the first embodiment of the present invention, and may include a touch sensor 402, a light source controller 404, and a light source driver 406.

4, the touch sensor 402 senses (touches) a fingerprint object (i.e., a finger) when it contacts the fingerprint contact portion 202, generates a touch sense signal corresponding thereto, The touch sensor 402 may have a structure in which a plurality of the touch sensors 402 are disposed inside the fingerprint contact portion 202 at regular intervals.

The light source control unit 404 may be, for example, a microprocessor or the like that performs overall operation control in the fingerprint recognition apparatus. When the contact detection signal is input from the touch sensor 402, And transmits the generated command to the light source driver 406. [

The light source driving unit 406 drives a light source 204 disposed at a predetermined interval on the edge of the fingerprint contacting unit 202, that is, a plurality of LEDs or OLEDs, when a light source driving command is input from the light source control unit 404 (Lights each LED or each OLED), thereby emitting light to the surface of the fingerprint object (i.e., finger) touching the fingerprint contact portion 202, thereby emitting the fingerprint object.

At this time, when the touch sensor 402 detects the contact release of the fingerprint object, the light source control unit 404 generates a light source off command and transmits the command to the light source driving unit 406. As a result, the light source driving unit 406 Off.

That is, the light source applied to the fingerprint recognition device of the present embodiment maintains the lighting state only when the fingerprint object is in contact with the fingerprint contact portion, and remains in the unlit state when the fingerprint object is not in contact with the fingerprint contact portion.

[Example 2]

FIG. 5 is a plan view of a fingerprint recognition device according to a second embodiment of the present invention, and FIG. 6 is a sectional view of a fingerprint recognition device according to the second embodiment of the present invention.

Referring to FIG. 5, the fingerprint recognizer 500 accepts fingerprints, which are biometric information for personal authentication (personal authentication). The fingerprint recognizer 500 may be, for example, an office device , A TV, a TV remote control, a microwave oven, a washing machine, etc.), a door lock device, a portable device (e.g., smart phone, mobile phone, smart pad,

This fingerprint recognizer 500 may include a fingerprint contact portion 502, a light source 504 and an image sensor 506 as shown in FIG. 6 as an example, Or the like, and may be any one of, for example, a silicone tube material, a plastic material, and a glass material.

At this time, though not shown in the drawing, a contact sensor (for example, a capacitance sensor or the like) for sensing the contact area when the fingerprint object contacts the fingerprint contact portion 502 is mounted inside the fingerprint contact portion 502 , And the contact area sensing signal in such a touch sensor may be transmitted to the light source control unit 904 of FIG. 9 described later.

Next, the light source 504 may be composed of a plurality of LEDs or OLEDs arranged in a matrix structure of N ㅧ M over the entire surface of the lower end of the fingerprint contacting portion 502, and each of the LEDs or OLED is made of a transparent material Lt; / RTI >

The transparent light source 504 having a matrix structure of N ㅧ M and disposed at the lower end of the fingerprint contact portion 502 is configured such that when a fingerprint object contacts the fingerprint contact portion 502, only a partial light source, 5, assuming that the contact area to which the fingerprint object is touched is reference numeral 508, only each LED or OLED group 510 located inside the edge of the contact area 508 emits light (I. E., Lit). At this time, light emitted from each LED or OLED group 510 will emit a fingerprint object.

6, an image sensor 506 is disposed at the lower end of the light source 504 as an example. The image sensor 506 detects the light emitted from the fingerprint object touching the fingerprint contact portion 502, (I.e., an image of the finger itself having a fingerprint) and converting the fingerprint image signal into an electric fingerprint image signal. The fingerprint image signal generated in this case may be provided to a fingerprint authentication module And the like.

That is, the fingerprint recognition device of the present embodiment is a group of light sources arranged in the form of a matrix of N ㅧ M over the entire lower surface of the fingerprint contact portion, that is, a group of LEDs or a group of LEDs located inside the edge of the contact region, ) By selectively emitting light emitted from the finger surface contacting the fingerprint contact portion, the image of the finger itself, on which the fingerprint is formed, is projected onto the image sensor, whereby the image sensor can acquire the fingerprint image.

Here, it is preferable to form (arrange) the distance (distance) between the fingerprint abutting portion 502 and the image sensor 506 to be as short as possible, in order to increase the precision of the image acquired by the image sensor.

7 is a plan view of a fingerprint recognition apparatus according to a modification of the second embodiment of the present invention.

7, the fingerprint recognition device of the modified embodiment detects the fingerprint image on the outside of the edge of the contact area 704 (i.e., the non-contact area adjacent to the edge of the contact area) detected when the fingerprint object touches the fingerprint contact part 702 Each positioned LED or OLED group 706 may be implemented to emit light.

That is, assuming that the contact area with which the fingerprint object is touched is reference numeral 704, only each LED or OLED group 706 located outside the edge of the contact area 704 is controlled to emit (i.e., light) the light . At this time, light emitted from each LED or OLED group 706 will cause the fingerprint object to emit light.

8 is a plan view of a fingerprint recognition apparatus according to another modification of the second embodiment of the present invention.

8, the fingerprint recognition device according to another modified embodiment includes a plurality of LEDs or OLED groups 806a and 806b located inside the edge of the contact area 804, which is detected when the fingerprint object contacts the fingerprint contact 802, (I.e., the non-contact region adjacent to the edge of the contact region) emits light at the same time as the LED or OLED group 806b.

That is, assuming that the contact area in which the fingerprint object is contacted is 804, each LED or OLED group 806a located inside the edge of the contact area 804 and each LED or OLED group (I.e., turned on) light simultaneously at the same time. At this time, light emitted from each LED or OLED group 806a, 806b will cause the fingerprint object to emit light.

FIG. 9 is a block diagram of a control device for driving the fingerprint recognition device according to the second embodiment of the present invention, and may include a touch sensor 902, a light source control unit 904, and a light source driver 906.

9, the touch sensor 902 detects (detects) a contact area when a fingerprint object (i.e., finger) touches the fingerprint contact part 202 and generates a contact area detection signal accordingly, The touch sensor 802 may be a capacitive sensor disposed inside the fingerprint contact portion, for example.

The light source control unit 904 may be, for example, a microprocessor or the like that performs overall operation control in the fingerprint recognition apparatus. When the contact area detection signal is inputted from the contact sensor 902, A group-selective light source driving command to the light source driving unit 406, and the like.

At this time, the group-selective light source driving command generated by the light source control unit 904 includes a first driving command for lighting only a group of optical elements (LED or OLED elements) located inside the edge of the contact area, (LED or OLED element) located outside the edge of the contact region, a second group of optical elements (LED or OLED elements) located outside the edge of the contact region, And a third drive command for causing the group of elements (LED or OLED element) to light at the same time.

The light source driving unit 906 drives only the first optical element group (the optical element group located inside the edge of the contact region) when the group selective light source driving command is inputted from the light source control unit 904, It is possible to drive only the element group (the optical element group located outside the edge of the contact region) or the first optical element group and the second optical element group at the same time, whereby the fingerprint object , Finger) by emitting light to the surface of the fingerprint object.

At this time, when the contact release of the fingerprint object is sensed through the touch sensor 902, the light source control unit 904 generates a light source off command and transmits it to the light source driving unit 906. As a result, in the light source driving unit 906, As shown in FIG.

That is, the light source applied to the fingerprint recognition device of the present embodiment maintains the lighting state on a selective optical element group basis on the basis of the contact region only when the fingerprint object is in contact with the fingerprint contact portion, and when the fingerprint object is not contacted with the fingerprint contact portion State, it is maintained in an unlit state.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. It is easy to see that this is possible. That is, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the present invention.

Therefore, the scope of protection of the present invention should be construed in accordance with the following claims, and all technical ideas within the scope of equivalents should be interpreted as being included in the scope of the present invention.

202, 502, 702, 802: fingerprint contact
204, 504: Light source
206, 506: image sensor

Claims (15)

A fingerprint contact portion for contacting the fingerprint object;
A light source that emits light from an edge of the fingerprint contact portion to a surface of the fingerprint object to cause the fingerprint object to emit light when the fingerprint object is contacted; And
An image sensor that acquires a light-emitting fingerprint image from the fingerprint object and converts the light-emitting fingerprint image into an electric fingerprint image signal;
And a fingerprint recognition device.
The method according to claim 1,
The fingerprint-
Silicone tube, plastic, or glass
Fingerprint recognition device.
The method according to claim 1,
The light source includes:
And a plurality of LEDs or OLEDs arranged at regular intervals along edges of the fingerprint contact portion
Fingerprint recognition device.
A fingerprint contact portion for contacting the fingerprint object;
A light source that emits light from the edge of the contact area to the surface of the fingerprint object when the fingerprint object is touched, thereby emitting the fingerprint object; And
An image sensor that acquires a light-emitting fingerprint image from the fingerprint object and converts the light-emitting fingerprint image into an electric fingerprint image signal;
And a fingerprint recognition device.
5. The method of claim 4,
The fingerprint-
Silicone tube, plastic, or glass
Fingerprint recognition device.
5. The method of claim 4,
The light source includes:
And a plurality of LEDs or OLEDs arranged in a matrix structure of N ㅧ M on the entire surface of the fingerprint contacting portion,
Each LED or OLED located inside the edge of the contact area when the fingerprint object is contacted emits light
Fingerprint recognition device.
The method according to claim 6,
A contact sensor for sensing a contact area of the fingerprint object
The fingerprint recognition device further comprising:
5. The method of claim 4,
The light source includes:
And a plurality of LEDs or OLEDs arranged in a matrix structure of N ㅧ M on the entire surface of the fingerprint contacting portion,
Each LED or OLED located outside the edge of the contact area when the fingerprint object is contacted emits light
Fingerprint recognition device.
9. The method of claim 8,
A contact sensor for sensing a contact area of the fingerprint object
The fingerprint recognition device further comprising:
A fingerprint contact portion for contacting the fingerprint object;
A light source constituted by a plurality of LEDs or OLEDs arranged in a matrix structure of N? M on the entire surface of the fingerprint contact portion;
A touch sensor that senses a contact area of the fingerprint object when the fingerprint object contacts the fingerprint contact;
A light source control unit for controlling each of the LEDs or the OLED group located inside the edge of the contact region to emit light to emit light of the fingerprint object; And
An image sensor that acquires a light-emitting fingerprint image from the fingerprint object and converts the light-emitting fingerprint image into an electric fingerprint image signal;
And a fingerprint recognition device.
11. The method of claim 10,
The fingerprint-
Silicone tube, plastic, or glass
Fingerprint recognition device.
A fingerprint contact portion for contacting the fingerprint object;
A light source constituted by a plurality of LEDs or OLEDs arranged in a matrix structure of N? M on the entire surface of the fingerprint contact portion;
A touch sensor that senses a contact area of the fingerprint object when the fingerprint object contacts the fingerprint contact;
A light source control unit for controlling each LED or OLED group located outside the edge of the contact region to emit light to emit light of the fingerprint object; And
An image sensor that acquires a light-emitting fingerprint image from the fingerprint object and converts the light-emitting fingerprint image into an electric fingerprint image signal;
And a fingerprint recognition device.
13. The method of claim 12,
The fingerprint-
Silicone tube, plastic, or glass
Fingerprint recognition device.
A fingerprint contact portion for contacting the fingerprint object;
A light source constituted by a plurality of LEDs or OLEDs arranged in a matrix structure of N? M on the entire surface of the fingerprint contact portion;
A touch sensor that senses a contact area of the fingerprint object when the fingerprint object contacts the fingerprint contact;
A light source control unit for controlling each LED or OLED group located inside the edge of the contact region and each LED or OLED group located outside the edge of the contact region to simultaneously emit light to emit the fingerprint object; And
An image sensor that acquires a light-emitting fingerprint image from the fingerprint object and converts the light-emitting fingerprint image into an electric fingerprint image signal;
And a fingerprint recognition device.
15. The method of claim 14,
The fingerprint-
Silicone tube, plastic, or glass
Fingerprint recognition device.
KR1020150088848A 2015-06-23 2015-06-23 Finger print recognition apparatus KR20170000103A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110110713A (en) * 2019-06-12 2019-08-09 马远博 It is a kind of using Organic Light Emitting Diode as the optical fingerprint acquisition system of backlight
US10978523B2 (en) 2018-10-08 2021-04-13 Samsung Electronics Co., Ltd. Visible light sensor embedded organic light emitting diode display panels and display devices including the same
KR20210143625A (en) 2020-05-20 2021-11-29 주식회사 슈프리마 Apparatus and method for sterilizing fingerprint recognition area
US11854294B2 (en) 2020-09-04 2023-12-26 Samsung Electronics Co., Ltd. Electronic devices

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110069998A (en) 2009-12-18 2011-06-24 주식회사 유니온커뮤니티 Fingerprint recognition apparatus for distinguishing forged fingerprint and method therof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110069998A (en) 2009-12-18 2011-06-24 주식회사 유니온커뮤니티 Fingerprint recognition apparatus for distinguishing forged fingerprint and method therof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10978523B2 (en) 2018-10-08 2021-04-13 Samsung Electronics Co., Ltd. Visible light sensor embedded organic light emitting diode display panels and display devices including the same
US11716892B2 (en) 2018-10-08 2023-08-01 Samsung Electronics Co., Ltd. Visible light sensor embedded organic light emitting diode display panels and display devices including the same
CN110110713A (en) * 2019-06-12 2019-08-09 马远博 It is a kind of using Organic Light Emitting Diode as the optical fingerprint acquisition system of backlight
KR20210143625A (en) 2020-05-20 2021-11-29 주식회사 슈프리마 Apparatus and method for sterilizing fingerprint recognition area
US11854294B2 (en) 2020-09-04 2023-12-26 Samsung Electronics Co., Ltd. Electronic devices

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