SEMICONDUCTOR DEVICE HAVING GUARD-RING, DISPLAY DRIVER CIRCUIT, AND DISPLAY APPARATUS

摘要

PURPOSE: A semiconductor device with a guard ring structure, a display driver circuit, and a display device are provided to the abnormality of logic by emitting an electric charge using a ESD(Electro Static Discharge) tester to a display panel. CONSTITUTION: A first well areas(103,104) are formed in a semiconductor substrate(10) in a predetermined depth. A second well areas(101,102) are formed in the first well area in a predetermined depth. The guard ring area(110) of a second conductive type is formed in a predetermined depth by being separately placed between the first well areas. The guard ring area is connected to a ground voltage.