LIQUID LENS, AND METHOD FOR MANUFACTURING SAME

摘要

The present invention relates to a liquid lens which can be focused by an electrical signal and/or fluid pressure. The liquid lens of the present invention comprises: a receptacle which has a cavity with a hemispherical side cross-section, and which receives, in the cavity, an insulating liquid droplet and a conductive liquid droplet which are not mixed with each other and which have the same density; a lower substrate coupled to the lower surface of the receptacle to close the lower surface of the cavity; and an upper substrate coupled to the upper surface of the receptacle to close the upper surface of the cavity, wherein said receptacle includes: an outer wall in which the cavity is formed; a first electrode which is formed at the inner surface of the outer wall, and one end of which is connected to an external power source; a first insulating film which is laminated on the surface of the first electrode, and contacts said conductive liquid droplet and the insulating liquid droplet; and a second electrode which is laminated on a portion of the surface of the first insulating film, and one end of which contacts said conductive liquid droplet and the other end of which is connected to said external power source. The present invention improves the structure of the cavity of the receptacle to achieve efficient focusing using a low driving voltage.