LIQUID CRYSTAL DISPLAY DEVICE

摘要

PURPOSE: A liquid crystal display device is provided to prevent gradation concentration and halo while maintaining a contrast ratio effect. CONSTITUTION: In a liquid crystal display device, a global dimming result value output unit(GLD) produces a global dimming return value(glv). A local dimming return value output unit(LD) produces a local dimming return value(ldv). An average level calculation unit(APLP) calculates an average pixel level at each block. A partial differential analysis unit analyzes the partial differential value between adjacent blocks A convex combination parameter determination unit(CCPD) determines a convex combination parameter.