公开(公告)号：US11314960B2

公开(公告)日：2022-04-26

申请号：US16913977

申请日：2020-06-26

Applicant: LG Display Co., Ltd.

Inventor： Ji-Ho Cho ,  ManHyeop Han ,  Yongkyun Choi ,  Junghoon Lee

IPC: G06K9/00 ,  G06F3/041

Abstract: A display apparatus including a large-area fingerprint sensor includes a display panel displaying an image; a touch panel sensing a touch of a finger; a fingerprint sensor including a plurality of fingerprint pixels and recognizing a fingerprint of the finger; a fingerprint sensor driver driving the fingerprint sensor and including a driver driving the fingerprint sensor and a fingerprint recognizer recognizing a fingerprint by using sensing signals received from the fingerprint sensor; and a touch driver driving the touch panel, wherein the driver of the fingerprint sensor driver provides a sensing gate signal to sensing gate lines included in a first touch block determined being touched by touch position information received from the touch driver, among m (where m being an integer of 2 or greater) number of sensing gate lines included in the fingerprint sensor.

公开(公告)号：US11216634B2

公开(公告)日：2022-01-04

申请号：US17107746

申请日：2020-11-30

Applicant: LG Display Co., Ltd.

Inventor： Yongkyun Choi ,  KiDuk Kim ,  JiHo Cho ,  ManHyeop Han ,  Junghoon Lee

IPC: G06K9/00 ,  G06K9/20 ,  B06B1/02 ,  B06B1/06 ,  G06F3/043

Abstract: An ultrasonic sensor and a display device and may drive a plurality of sensing pixels disposed in the ultrasonic sensor simultaneously to transmit an ultrasonic wave, may make a first electrode disposed in a sensing pixel to be floated at a timing receiving a reflected signal to store the signal, and then may perform a sensing sequentially. Therefore, as an accurate sensing may be possible while reducing a duration and a number of an ultrasonic wave transmitting, a sensitivity and an accuracy of a sensing may be maintained while improving a driving efficiency of the ultrasonic sensor.

公开(公告)号：US10719172B2

公开(公告)日：2020-07-21

申请号：US16453890

申请日：2019-06-26

Applicant: LG Display Co., Ltd.

Inventor： ManHyeop Han ,  KyoSeop Choo ,  BuYeol Lee ,  SeungMan Ryu

IPC: G06F3/042 ,  G06F3/041 ,  H01L27/32 ,  H01L51/00 ,  H01L51/52

Abstract: A display device with a built-in optical image sensor includes a display panel, a cover substrate, and an optical image sensor. The cover substrate has light transmissivity and covers the display panel. The optical image sensor is coupled to the display panel and senses an image of a body of a user using light reflected from the body of the user in contact with the cover substrate. The display panel includes a base substrate, a pixel portion, an encapsulation film, and a touch sensing layer. The touch sensing layer includes the touch electrode portion and is disposed on the encapsulation film covering a pixel portion. A plurality of pinholes are defined in at least one layer having light absorptivity or light reflectivity of the pixel portion. The plurality of pinholes overlap the optical image sensor. Further, openings overlapping the plurality of pinholes are defined in the touch electrode portion.