System and method for achieving optimal display contrast in a mobile communication device

A method of controlling the contrast ratio of a liquid crystal display (LCD) in a mobile device, comprising the steps of:

• storing a user contrast setting in a memory device;
• converting the user contrast setting into a hardware contrast setting using a contrast offset and a contrast scale;
• and
• converting the hardware contrast setting into a contrast voltage using a display driver, wherein the contrast voltage controls the contrast ratio of the LCD.

A method of controlling the contrast ratio of a liquid crystal display (LCD) in a mobile device, comprising the steps of:

• storing a user contrast setting in a memory device;
• storing a contrast offset in the memory device;
• storing a contrast scale in the memory device;
• converting the user contrast setting into a hardware contrast setting using the contrast offset and the contrast scale;
• and
• converting the hardware contrast setting into a contrast voltage using a display driver, wherein the contrast voltage controls the contrast ratio of the LCD.

A method for calibrating a contrast offset value for a liquid crystal display (LCD) contrast control system in a mobile device, comprising the steps of:

• adjusting a user contrast setting on the mobile device to a desired optimal value;
• initializing the contrast offset value;
• determining a contrast ratio of the LCD;
• and
• incrementing the contrast offset value until the contrast ratio reaches a peak value.

A method for calibrating a contrast scale value for a liquid crystal display (LCD) contrast control system in a mobile device, comprising the steps of:

• adjusting a user contrast setting on the mobile device to a highest setting;
• initializing the contrast scale value;
• determining a contrast ratio of the LCD;
• incrementing or decrementing the contrast scale value until the contrast ratio reaches a desired maximum value.

A method for calibrating a backlight adjustment value for a liquid crystal display (LCD) contrast control system in a mobile device, comprising the steps of:

• turning on a LCD backlight;
• initialize the backlight adjustment value;
• adjusting a user contrast setting on the mobile device to a pre-calibrated optimal value;
• determining a contrast ratio of the LCD;
• incrementing the backlight adjustment value until the contrast ratio reaches a peak value.