CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is based on and claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2019-0152602, filed on Nov. 25, 2019, in the Korean Intellectual Property Office, the disclosure of which is herein incorporated by reference in its entirety.

BACKGROUND

Field

One or more embodiments disclosed herein generally relate to an electronic device including a fingerprint sensor.

Description of Related Art

A mobile device may have a fingerprint sensor mounted therein to authenticate a user by matching the user's fingerprints with stored fingerprints for added security.

The fingerprint sensor may be mounted in a lower region of a display. The display may be large enough that it occupies most of the front surface of the mobile device, and various factors, such as the angle of view of the fingerprint sensor, the thickness of the display, and the distance between the display and the fingerprint sensor, should be considered when designing the front surface of the display so that the fingerprint sensor can be mounted to overlap the display yet still function to capture fingerprints.

The fingerprint sensor should have a structure for blocking foreign substances since foreign substances will interfere with the fingerprint sensing operation. Conventionally, foreign substances may be prevented from entering the fingerprint sensor by mounting a dustproof member in a space between a flexible printed circuit board (FPCB) connected with a display panel and a bracket in which the fingerprint sensor is mounted, or by positioning the dustproof member in a space formed by processing the bracket.

The above information is presented as background information only to assist with an understanding of the disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the disclosure.

SUMMARY

Currently in the marketplace, there is a trend towards miniaturized mobile devices, and as such, display panels are becoming thinner. When a fingerprint sensor is mounted under a display panel that is relatively thinner compared to conventional display panels, the distance between the user's fingerprint and the fingerprint sensor may be shortened. As the distance between the user's finger and the fingerprint sensor is shortened, it may be difficult to configure an area large enough for the acquisition of fingerprints even when the fingerprint sensor has a large angle of view.

A space for attaching the dustproof member between the FPCB and the bracket to prevent foreign substances from entering the fingerprint sensor may be narrow. To this end, the bracket may be processed so as to guarantee the space for the dustproof member. However, this processing method is limited by the original thickness of the bracket and other components such as the battery that are mounted in the bracket. If the bracket is processed up to a breaking point, perforations may be formed on the bracket due to machining errors. In addition, even if the bracket is processed up to the breaking point and a dustproof member is mounted therein, there may be difficulty in smoothly preventing foreign substances from entering the fingerprint sensor, and foreign substances may influence other components (for example, the battery) mounted in the bracket.

An electronic device according to an embodiment may include: a housing including a window facing in a first direction and a rear plate facing in a second direction opposite the first direction; a display disposed between the window and the rear plate, the display including: a first layer having a first surface disposed on the window and a second surface that faces in the second direction; a second layer having a third surface disposed on the second surface of the first layer, a fourth surface that faces in the second direction, and a first opening; and a conductive layer having a fifth surface disposed on the fourth surface of the second layer, a sixth surface that faces in the second direction, and a second opening corresponding to the first opening; a flexible printed circuit board (FPCB) extended from at least a portion of the display and disposed on a surface of the display that faces in the second direction, and having a third opening corresponding to the second opening; a frame structure on which the display and the FPCB are seated, and which is disposed between the FPCB and the rear plate and has a fourth opening corresponding to the third opening; a fingerprint sensor having at least a portion inserted into the fourth opening and facing in the first direction; and a dustproof member disposed between the display and the frame structure within the third opening.

An electronic device according to various embodiments may include: a housing including a front cover window and a rear cover; a display panel disposed under the front cover window, and comprising a plurality of layers, at least one first layer of the plurality of layers forming a first opening and a second layer of the plurality of layers forming a second opening; an FPCB electrically connected with the display panel and disposed on a rear surface of the display panel, and comprising a third opening corresponding to the first opening; a fingerprint sensor; a frame structure disposed between the front cover window and the rear cover, and having the fingerprint sensor and the FPCB disposed therein, and comprising a fourth opening corresponding to the third opening; and a dustproof member disposed to surround the fingerprint sensor, and the fingerprint sensor may be disposed to face a front surface of the electronic device to acquire fingerprints of a user through a space formed by the first opening, the second opening, the third opening, and the fourth opening, and the dustproof member may be disposed between the second layer and the frame structure within the third opening.

Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments.

