Samsung Electronics Co., Ltd.

Jungwoo Cho

Juhyung Lee

Kyoungwhan Oh

Sunwoo Park

Minwoo Rhee

Hyunjin Lee

Jungshin Lee

Seungdon Lee

Sujie Kang

A 3D printing apparatus includes a substrate stage configured to support a substrate, a droplet ejector including at least one droplet nozzle configured to discharge a photo-curable droplet on the substrate, a first photo curing unit configured to irradiate light to a drop path along which the droplet discharged from the droplet nozzle falls to change a viscosity of the droplet, and a second photo curing unit configured to irradiate light onto the droplet that has landed on the substrate to cure the droplet.

3D printing apparatus and 3D printing method

A method for generating calibration data of an electronic device includes obtaining a plurality of background images through at least part of a display of the electronic device, using a fingerprint sensor positioned under the display of the electronic device, obtaining a variation between the plurality of background images, when the variation is less than or equal to a threshold value, generating calibration data for the fingerprint sensor, using at least one background image of the plurality of background images, and storing the generated calibration data in a memory of the electronic device.

Method for obtaining calibration data and electronic device therefor

Growing community of inventors

Gyeonggi-do, South Korea

Jungwoo Cho