Lx Semicon Co., Ltd.

Tai Ming Piao

Won Hee Kim

Jin Woo Kim

Young Ho Shin

Byeon Cheol Lee

Seong Geon Kim

A buffer can include a first output adjustment unit configured to output a first signal, and a second output adjustment unit configured to output a second signal. The first output adjustment unit can include a first input stage configured to adjust a control current according to a difference between a first input voltage and a first output voltage, and a first output stage configured to output the first output voltage as the first signal. The first output voltage can be a voltage between a first level voltage and a second level voltage. The first input stage can be connected to a third power line that supplied a third level voltage. The first level voltage can be greater than the second level voltage. The second level voltage can be greater than the third level voltage.

Buffer and a data driving device

Disclosed are a source driver and a method of detecting crack of a display panel. A source driver may comprise a first circuit configured to apply first data to data lines connected to sub-pixels of a display panel to charge a first driving voltage; and a second circuit formed on the display panel that applies the first driving voltage to a detection line formed on the display panel to detect the presence of cracks in the display panel based on the illumination status of the sub-pixels, wherein the detection line includes a first detection node and a second detection node formed on one side of the display panel along its extension direction, wherein the first detection node is connected to data lines of the first and third sub-pixels, and wherein the second detection node is connected to data line of the second sub-pixel.

Growing community of inventors

Daejeon, South Korea

Tai Ming Piao