US 12,392,984 B2
Camera module including liquid lens, and control method thereof
Chang Wook Kim, Seoul (KR); Young Woon Kim, Seoul (KR); and Young Seop Moon, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 17/416,614
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Dec. 20, 2019, PCT No. PCT/KR2019/018180
§ 371(c)(1), (2) Date Jun. 21, 2021,
PCT Pub. No. WO2020/130706, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 10-2018-0167155 (KR), filed on Dec. 21, 2018.
Prior Publication US 2022/0075139 A1, Mar. 10, 2022
Int. Cl. G02B 7/02 (2021.01); G02B 3/12 (2006.01); H04N 23/55 (2023.01); H05B 3/00 (2006.01)
CPC G02B 7/028 (2013.01) [G02B 3/12 (2013.01); H04N 23/55 (2023.01); H05B 3/0019 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A camera module, comprising:
a liquid lens comprising a first plate, a common electrode, and an individual electrode disposed on a first surface of the first plate;
a resistor disposed on the first surface of the first plate so as to be spaced apart from the individual electrode;
a temperature sensor connected to the resistor and configured to supply a sensing signal to the resistor;
a heating controller connected to the resistor and configured to supply a heating signal to the resistor;
a first switch connecting the resistor and the temperature sensor;
a second switch connecting the resistor and the heating controller; and
a switch controller configured to control the first switch and the second switch,
wherein the resistor is configured to sense a temperature of the liquid lens when the first switch is turned on by the switch controller and heat the liquid lens when the second switch is turned on by the switch controller,
wherein the first plate comprises a second surface formed opposite the first surface and which has an area that is smaller than an area of the first surface, and
wherein the common electrode is a reference electrode disposed on the second surface.