INFORMATION PROCESSOR AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an information processor capable of performing long- duration drive by suppressing electric power of a back light automatically in accordance with the load state of a CPU(central processing unit) when it is reproducing a moving picture. SOLUTION: This processor has two kinds of light sources of a light source A 21 and a light source B 22 as back lights of a liquid crystal part and the light source A 21 has brightness enough to illuminate the whole surface of a display screen 31 and the light source B 22 has brightness enough to illuminate the order of the half of the display screen 31. Moreover, a liquid crystal display device 11 has a liquid crystal controller 56 controlling automatically the brightness of the light source B 22 with a control signal from a system controller 52 in accordance with the load state of the CPU 51 at the time of reproducing the moving picture.