Abstract: Disclosed are novel compounds of Chemical Formula 1, optical isomers of the compounds, and pharmaceutically acceptable salts of the compounds or the optical isomers. The compounds, isomers, and salts exhibit excellent activity as GLP-1 receptor agonists. In particular, they, as GLP-1 receptor agonists, exhibit excellent glucose tolerance, thus having a great potential to be used as therapeutic agents for metabolic diseases. Moreover, they exhibit excellent pharmacological safety for cardiovascular systems.

Abstract: Provided is a cellular phone having a light-emitting device in a battery cover the cellular phone. The cellular phone includes a main body that includes a battery-receiving portion for installing a battery, a battery cover that covers the battery-receiving portion and is removably coupled to the main body, a power-generating antenna in the form of a coil that is provided in the battery cover and converts electromagnetic waves emitted from the cellular phone into electricity, a light-emitting diode that is electrically connected to the power-generating antenna to generate light, a light-transfer sheet that transfers the light generated in the light-emitting diode, and a light-emitting object that is formed on a surface of the light-transfer sheet and emits the light generated from the light-emitting diode to the outside of the battery cover.

Abstract: The present invention relates to a light guiding keypad and a light guiding keypad assembly. More particularly, the present invention relates to a light guiding keypad and light guiding keypad assembly which can reduce the number of components of mobile phones by forming line type or surface type of key character patterns on one surface of a light guiding plate of a mobile phone that receives lights through its side surface and thus making the light guiding plate perform as keypad. The key character patterns are formed by printing paste having diffusion and reflection features.

Abstract: The present invention relates to a light guiding keypad and a light guiding keypad assembly. More particularly, the present invention relates to a light guiding keypad and light guiding keypad assembly which can reduce the number of components of mobile phones by forming line type or surface type of key character patterns on one surface of a light guiding plate of a mobile phone that receives lights through its side surface and thus making the light guiding plate perform as keypad. The key character patterns are formed by printing paste having diffusion and reflection features.