US 12,343,891 B2
Film cutting device, film cutting method using the same, and display device including circuit film cut by the same
Chung-Seok Lee, Hwaseong-si (KR); Jeongeun Park, Goyang-si (KR); Hanho Park, Yongin-si (KR); Jeongmin Ban, Cheonan-si (KR); Joongmok Lee, Suwon-si (KR); and Soyeon Joo, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Aug. 16, 2021, as Appl. No. 17/402,872.
Claims priority of application No. 10-2020-0134671 (KR), filed on Oct. 16, 2020.
Prior Publication US 2022/0118637 A1, Apr. 21, 2022
Int. Cl. B26D 1/04 (2006.01); B26D 7/08 (2006.01); B26D 7/10 (2006.01); G06F 1/18 (2006.01)
CPC B26D 1/045 (2013.01) [B26D 7/086 (2013.01); B26D 7/10 (2013.01); G06F 1/189 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A film cutting device, comprising:
a stage which supports a circuit film on an upper surface thereof;
a cutter disposed on the stage to cut the circuit film on the upper surface of the stage;
a vibration horn connected to the cutter, wherein the vibration horn vibrates the cutter in a first direction based on an ultrasonic wave, wherein the first direction is perpendicular to the upper surface of the stage;
a cooler which cools the cutter;
a vibration generator which generates the ultrasonic wave vibrating in a fourth direction crossing the first direction; and
a converter which converts a vibration direction of the ultrasonic wave generated by the vibration generator into the first direction,
wherein the cutter includes:
a body portion connected to the vibration horn and extending in the first direction; and
a blade portion connected to the body portion and including a first surface and a second surface, which are connected to each other at a cutting edge of the blade portion,
wherein an angle between the second surface of the blade portion and the first direction is in a range of about 20 degrees to about 30 degrees such that an angle between a cut surface of the circuit film on the stage, which is cut by the blade portion in the first direction, and the upper surface of the stage is in a range of about 64.5 degrees to about 68.2 degrees,
wherein the cooler is spaced apart from the cutter and the vibration horn in a fourth direction crossing the first direction, and provides cooled air toward the cutter in the fourth direction, and
wherein the stage includes a heater only in a partial portion thereof which overlaps the blade portion in the first direction.