Patent ID: 6597338
Filing Date: 2003-07-22
Classification: G09G,H05B

Abstract:
A liquid crystal display having a regulating current type inverter for controlling a backlight, comprising:a luminance regulating circuit for controlling a display luminance, said luminance regulating circuit comprising: a user setting switch for inputting a user control instruction; a luminance setting circuit which simultaneously outputs a regulating light instruction for controlling said regulating current type inverter and a switching instruction for controlling a gradation value of digital display data, based on a single user control instruction; a shift circuit which reduces a gradation value of said digital display data; and a switching circuit which, based upon said switching instruction, selects one of outputting digital display data directly to a liquid crystal display section and outputting digital display data through said shift circuit to said liquid crystal display section, wherein said single user control instruction comprises other than an on/off instruction.