公开(公告)号：US20210325639A1

公开(公告)日：2021-10-21

申请号：US17361560

申请日：2021-06-29

Applicant: Samsung Display Co., Ltd.

Inventor： Emil ASLANOV ,  Je Kil RYU ,  Hae Sook LEE ,  Kyung Hoon CHUNG ,  Gyoo Wan HAN

IPC: G02B13/00 ,  B23K26/06 ,  G02B26/10 ,  B23K26/082

Abstract: A laser processing apparatus includes a laser source which generates a laser beam; a scanner unit disposed in an optical path of the laser beam from the laser source and which adjusts the optical path of the laser beam from the laser source in a first direction or in a second direction different from the first direction; and a reflector unit disposed in an optical path of the laser beam adjusted by the scanner unit and which reflects the laser beam adjusted by the scanner unit, where the reflector unit includes a first sub-reflector unit which shifts an optical path of the laser adjusted by the scanner unit in the first direction, and a second sub-reflector unit which shifts an optical path of the laser beam adjusted by the scanner unit in a third direction opposite to the first direction.

公开(公告)号：US20210256908A1

公开(公告)日：2021-08-19

申请号：US17070438

申请日：2020-10-14

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jun Hyun PARK ,  Bon Yong KOO ,  Byung Chang YU ,  Yu Jin LEE ,  Kyung Hoon CHUNG

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display device includes a display panel including a plurality of pixels, a timing controller which generates an emission start signal, an emission driver which supplies an emission control signal to the plurality of pixels based on the emission start signal received from the timing controller, a first scan driver which supplies a first scan signal to the plurality of pixels, a second scan driver which supplies a second scan signal to the plurality of pixels, and a data driver which supplies a data signal to the plurality of pixels. The timing controller adjusts a period in which the emission start signal is supplied based on a change of a driving frequency.

公开(公告)号：US20210027702A1

公开(公告)日：2021-01-28

申请号：US16855038

申请日：2020-04-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jun Hyun PARK ,  Bon Yong KOO ,  Yu Jin LEE ,  Kyung Hoon CHUNG ,  Chong Chul CHAI

IPC: G09G3/325 ,  G09G3/3266 ,  G09G3/3291 ,  G09G3/36

Abstract: A pixel including a light emitter; a first transistor including first and second electrodes respectively connected to power and the light emitter, the first transistor controlling, driving current a first capacitor between a second and third node; a second transistor between the third node and data line and turned on by a scan signal; a third transistor between a first and second node, and turned on by a control signal; a fourth transistor between power and the third node, and turned on by a emission control signal; a fifth transistor between power and the first electrode, and turned on by the emission control signal; a sixth transistor between the second node and the light emitter, and turned on by another emission control signal; and a second capacitor between power and the first node, wherein the fourth, fifth and sixth transistors turn-on/off at least four times in a non-emission period.

公开(公告)号：US20200302840A1

公开(公告)日：2020-09-24

申请号：US16821706

申请日：2020-03-17

Applicant: Samsung Display Co., LTD.

Inventor： Hyun Joon KIM ,  Jun Ki JEONG ,  Kyung Hoon CHUNG ,  Kyung Bae KIM ,  Seung Chan LEE ,  Chong Chul CHAI

IPC: G09G3/00

Abstract: A method of testing a display panel including a pixel coupled to first, second, and third power lines, a data line, scan lines, an emission control line, and a test line, the method includes: applying a first power supply voltage to the first power line; applying a test voltage having a turn-on voltage level to the second power line; applying a scan signal having a turn-on voltage level sequentially to the scan lines and an emission control signal having a turn-on voltage level to the emission control line; applying a gate signal to the test line to turn on a test transistor coupled between two electrode of a light emitting element included in the pixel; measuring a sensing voltage output through the data line; and determining whether the pixel is defective, based on a voltage level of the measured sensing voltage.