TWI694368B - Electronic device with fingerprint identification mechanism - Google Patents

Abstract

An electronic device with fingerprint mechanism includes a touch panel, a camera unit, and a processing unit. A recognition area is defined as part of the touch panel. The touch panel is for controlled by finger. The camera unit is arranged below the recognition area and includes a plurality of camera devices spacedly arranged. The camera devices face the touch panel, and projections of the imaging ranges of the camera devices on the touch panel partially overlap so that he recognition area is covered by the projections of the imagining ranges. The processing unit is electrically connected to the touch panel and the camera unit.

Description

Electronic device with fingerprint identification structure

The invention relates to an electronic device with a fingerprint identification structure.

Today's portable electronic devices such as tablet computers and smartphones are usually equipped with fingerprint recognition function to unlock the electronic device. The more common fingerprint recognition structure is described in patent TW I409707, which is located outside the touch screen of the electronic device (For example, under the touch screen or the back of the electronic device) A fingerprint recognition area is specially set up. Below the fingerprint recognition area is a photographic lens for capturing fingerprint images for analysis by the processor. However, the camera's imaging range is limited, and the fingerprint recognition area The size is approximately the area of the finger press, or even smaller. The user must accurately press in this block to complete fingerprint recognition. However, this will not cause too much inconvenience to the user. After all, the touch and The appearance is different from other parts, users can easily find and press accurately.

Another type of fingerprint identification area is not set independently, but is directly set on a part of the area on the touch screen. The camera lens is set under the touch screen. The user directly presses a finger on a specific area on the touch screen to complete fingerprint identification . However, as mentioned in the previous paragraph, the fingerprint recognition area is relatively small compared to the touch screen, and it is not easy for the user to press accurately at one time. On the contrary, the user is very easy to accidentally press to the non-fingerprint recognition area, resulting in multiple attempts The embarrassment of pressing is very inconvenient.

The main object of the present invention is to provide an electronic device with a fingerprint identification structure, which can provide a larger area of the fingerprint identification area and make the operation of fingerprint identification easier.

To achieve the above object, the present invention provides an electronic device with a fingerprint identification structure, including a touch screen, a photographing unit and a processing unit.

A part of the area of the touch screen is defined as a recognition area, the touch screen is provided for finger touch on it; the photographing unit is located below the recognition area of the touch screen, and the photographing unit includes a plurality of spaced apart Lens devices, the lens devices face the touch screen and the projection areas of the lens devices' imaging ranges on the touch screen partially overlap each other, so that the recognition area is captured by the lens devices' imaging ranges on the touch screen Covered by the projection area on the top; the processing unit is electrically connected to the touch screen and the photographing unit.

The following merely illustrates the possible implementation forms of the present invention with examples, but it is not intended to limit the scope of the invention to be protected, and will be described first.

Please refer to FIGS. 1 to 6, the present invention provides an electronic device with a fingerprint recognition structure, including a touch screen 10, a photographing unit 20 and a processing unit.

A part of the area of the touch screen 10 is defined as a recognition area 11. The touch screen 10 is provided with a finger for touch control; the photographing unit 20 is disposed below the recognition area 11 of the touch screen 10 and the photographing unit 20 includes a plurality of lens devices 21 spaced apart from each other, the lens devices 21 facing the touch screen 10 and the projection areas of the imaging ranges of the lens devices 21 on the touch screen 10 partially overlap each other to make the recognition area 11 It is covered by the projection area of the imaging devices of the lens devices 21 on the touch screen 10; the processing unit is electrically connected to the touch screen 10 and the camera unit 20.

In this embodiment, the area of the identification area 11 is at least greater than twice the area of the finger pressing, so that no matter where the finger is pressed in the identification area, it can be effectively identified, and the user does not need to carefully align the position of the identifiable area In addition, the camera unit 20 further includes a base 22, the lens devices 21 are disposed on the base 22, preferably along the surface of the touch screen 10 defines a longitudinal direction and a transverse direction perpendicular to each other, the The photographing unit 20 has a plurality of lens devices 21 along the longitudinal direction and the lateral direction, for example, as shown in FIGS. 3 to 5, the number of the lens devices 21 can vary according to the size of the area to be covered and the imaging range of the lens device 21 used Adjust and choose differently.

Among them, in the main embodiment of the present invention shown in FIG. 6, each of the lens devices 21 is composed of a lens holder and a lens provided therein, and is an independent component. However, as shown in FIG. 7 In another embodiment of the invention, each of the lens devices 21 may only include optical elements such as lenses, and the seat body 22 directly forms an accommodating space such as a lens holder, so that the optical elements are directly disposed in the seat body, and the lenses The total height H of the device 21 and the base 22 is less than or equal to 1.0 mm, which makes the overall thickness of the lens device thinner.

In a preferred embodiment, when viewed from the side of each lens device 21, the included angle θ of the two sides of the imaging range is between 110 degrees and 130 degrees; in addition, the imaging range of each lens device 21 is defined in the The diameter of the projection area on the touch screen 10 is D1. When viewed from the side of any two adjacent lens devices 21, the width of the overlapping area of the projection area of the imaging area of the two lens devices 21 on the touch screen 10 is defined D2, D2 is more than 0.3 times D1, more preferably, D2 is more than 0.4 times D1.

With the above structure, the present invention can provide a fingerprint recognition area with a larger area on the touch screen. Since the entire recognition area is covered by the imaging ranges of multiple lens devices, the user only needs to press any position of the recognition area at will. All fingerprint recognition can be successfully completed, and there is no need to bend a small area that is not much different from the finger pressing area, and fingerprint recognition can be achieved quickly and accurately.

In particular, unlike the exclusive identification block for fingerprint identification on the back of the machine, the touch screen area is very large, and the fingerprint identification block has no special marking and frame selection. For users, only the identification is known. The area is roughly the size of the block. In this way, if the identification area is generally only a single lens for camera shooting, the identifiable area is very small. The user must repeatedly test and press to complete fingerprint identification. Extremely inconvenient.

However, the present invention covers multiple recognition areas with multiple lenses, which makes it easier for users to complete fingerprint recognition with a minimum number of tests, which improves operation efficiency and user experience.

10: Touch screen

11: Identification area

20: Photography unit

21: Lens device

22: seat body

D1: diameter

D2: width

θ: angle

H: total height

Figure 1 is a top view of the present invention. 2 is a top view of the photographing unit of the present invention. 3 to 5 are top views of photographing units according to other embodiments of the invention. 6 is a partial side view of the present invention. 7 is a partial side view of another embodiment of the present invention.

10: Touch screen

11: Identification area

21: Lens device

Claims (7)

An electronic device with a fingerprint recognition structure includes: a touch screen, defining a partial area of the touch screen as a recognition area, the touch screen is provided for finger touch on it; a photographing unit is provided in the Below the identification area of the touch screen, the photographing unit includes a plurality of lens devices spaced apart from each other. The lens devices face the touch screen and the projection areas of the lens devices on the touch screen partially overlap each other. The identification area is covered by the projection area of the imaging range of the lens devices on the touch screen, the photographing unit further includes a base, the lens devices are disposed on the base; a processing unit, and the touch The screen and the camera unit are electrically connected. The electronic device with fingerprint identification structure as described in claim 1, wherein the area of the identification area is at least greater than twice the area pressed by the finger. The electronic device with fingerprint identification structure as described in claim 1, wherein when viewed from the side of each lens device, the included angle between the two sides of the imaging range is between 110 degrees and 130 degrees. The electronic device with fingerprint identification structure as described in claim 1, wherein the diameter of the projection area of the imaging range of each lens device on the touch screen is defined as D1, when viewed from the side of any two adjacent lens devices The width of the overlapping area of the projection area of the two-lens device on the touch screen is defined as D2, and D2 is more than 0.3 times of D1. The electronic device with fingerprint identification structure as described in claim 4, wherein D2 is more than 0.4 times D1. The electronic device with fingerprint identification structure as described in claim 1, wherein a longitudinal direction and a lateral direction perpendicular to each other are defined along the surface of the touch screen, and the photographing unit has plural numbers in the longitudinal direction and the lateral direction, respectively The lens device. The electronic device with fingerprint identification structure as described in claim 1, wherein the total height of the base and the lens device is less than or equal to 1.0 mm.

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