Abstract: Disclosed is an apparatus for inspecting the appearance of a can for a secondary battery, which can obtain an image of the appearance of the can for the secondary battery and determine whether there is a defect. The apparatus for inspecting the appearance of a can for a secondary battery according to the disclosure obtains lateral images of a plurality of cans at once, and generates the lateral image for one can by extracting an area where each can is captured, thereby speeding up the inspection. Further, the lateral images of the can are obtained with light emitted in various combinations, thereby having an effect on improving the accuracy in defect diagnosis.

Abstract: Disclosed is an appearance inspection apparatus for a secondary battery, which simultaneously obtains laterals image by picking up a plurality of secondary batteries loaded in a tray, and then simultaneously obtains top and bottom images of the secondary batteries by returning the plurality of inspected secondary batteries back to the tray and transporting the tray.

Abstract: The appearance inspection apparatus for a secondary battery according to the disclosure can obtain an image corresponding to an area of not less than 180 degrees of a lateral surface of the secondary battery when the secondary battery is captured at a first posture, and obtain an image corresponding to the entire lateral surface of the secondary battery when the secondary battery is captured at a second posture, thereby having an effect on significantly improving inspection speed.

Abstract: A phase-transition optical isomer compound is described, a transparent EL display device including the phase-transition optical isomer compound and a method of fabricating the EL display device, where a phase of the phase-transition optical isomer compound is transited by light irradiation and a second electrode of the EL display device is selectively deposited without a masking process.

Abstract: Disclosed is an energy self-sufficient real time bio-signal monitoring and nutrient and/or drug delivery system based on salinity gradient power generation. The energy self-sufficient real time bio-signal monitoring and/or nutrient delivery system based on salinity gradient power generation includes: an electricity generation and nutrient and/or drug delivery module including a reverse electrodialysis device which generates electricity by using a nutrient and/or drug solution and discharge a diluted nutrient solution; and a bio-signal measuring unit inserted into the electricity generation and nutrient and/or drug delivery module and configured to receive electricity from the electricity generation and nutrient and/or drug delivery module and measure a bio-signal.

Abstract: A display apparatus includes a display panel, a driving controller and a data driver. The driving controller processes input image data according to a variable input frequency and generates a data signal having a varied frame length. The data driver converts the data signal into a data voltage and outputs the data voltage to the display panel. The driving controller determines a variable frequency mode and generates an asymmetric data signal including a positive data signal and a negative data signal which are asymmetric with respect to a common voltage for a same grayscale value in the variable frequency mode.

Abstract: Disclosed are a bone conduction speaker module and bone conduction earphones having the bone conduction speaker modules. More particularly, the present invention relates to a bone conduction speaker module and bone conduction earphones having the bone conduction speaker modules, wherein the bone conduction speaker modules can accurately output sound, can stably output sound with fewer vibrations, enable a wearer to comfortably use the earphones, can prevent strain to the wearer by minimizing influence of magnetic force, can facilitate wearing of the earphones, and can prevent an accident from occurring by allowing the wearer to hear external sounds. To this end, a bone conduction speaker module used in earphones, headphones, and a hearing aid, includes: a housing including a first casing covering a portion coming into contact with a human body and a second casing covering a side of the first casing; a magnet part; and a voice coil part.