Method of driving a light source, apparatus for performing the method and display apparatus having the apparatus

A method of driving a light source, the method comprising:

• converting primary image data of a red color, a green color and a blue color into first image data including at least white image data;
• obtaining luminance data of the first image data;
• obtaining sensing data based upon an external illuminance;
• and
• driving a light source module that provides a display panel with light based upon the luminance data and the sensing data,
• wherein driving a light source module comprises:
• obtaining driving data by multiplying the luminance data by the sensing data;
• and
• generating a driving signal having a pulse width based upon the driving data to provide the light source module with the driving signal having a pulse width, and
• wherein obtaining the driving data comprises:
• removing a least significant bit of the driving data such that the amplitude of the driving data is obtained from the luminance data and the sensing data.

A light source apparatus comprising:

• a light source module that provides a display panel with light;
• a luminance determiner that obtains luminance data of first image data that includes at least white image data that is converted from image data of a red color, a green color and a blue color;
• an illuminance sensor that obtains sensing data based upon an external illuminance;
• and
• a light source driver that drives the light source module based upon the luminance data and the sensing data,
• wherein the illuminance sensor comprises a lookup table configured to overlap increased external illuminance data with decreased external illuminance data for preventing flicker when mapping the sensing data based upon the external illuminance.

A light source apparatus comprising:

• a light source module that provides a display panel with light;
• a luminance determiner that obtains luminance data of first image data that includes at least white image data that is converted from image data of a red color, a green color and a blue color;
• an illuminance sensor that obtains sensing data based upon an external illuminance;
• and
• a light source driver that drives the light source module based upon the luminance data and the sensing data,
• wherein the light source driver comprises:
• a calculating unit that obtains driving data by multiplying the luminance data by the sensing data;
• and
• a pulse width generating unit that generates a driving signal having a pulse width based upon the driving data to provide the light source module with the driving signal having a pulse width, and
• wherein the calculating unit is configured to remove a least significant bit of the driving data to obtain the amplitude of the driving data from the luminance data and the sensing data.

A display apparatus comprising:

• a display panel comprising at least a white pixel;
• a panel driver that converts primary image data of a red color, a green color and a blue color into first image data including at least white image data to drive the display panel;
• and
• a light source apparatus comprising:
• a light source module that provides the display panel with light;
• a luminance determiner that obtains luminance data of the first image data;
• an illuminance sensor that obtains sensing data based upon an external illuminance;
• and
• a light source driver that drives the light source module based upon the luminance data and the sensing data,
• wherein the illuminance sensor comprises a lookup table configured to overlap increased external illuminance data with decreased external illuminance data for preventing flicker when mapping the sensing data based upon the external illuminance.

A display apparatus comprising:

• a display panel comprising at least a white pixel;
• a panel driver that converts primary image data of a red color, a green color and a blue color into first image data including at least white image data to drive the display panel;
• and
• a light source apparatus comprising:
• a light source module that provides the display panel with light;
• a luminance determiner that obtains luminance data of the first image data;
• an illuminance sensor that obtains sensing data based upon an external illuminance;
• and
• a light source driver that drives the light source module based upon the luminance data and the sensing data,
• wherein the light source driver comprises:
• a calculating unit that obtains driving data by multiplying the luminance data by the sensing data and
• a pulse width generating unit that generates a driving signal having a pulse width based upon the driving data to provide the light source module with the driving signal having a pulse width, and
• wherein the calculating unit removes a least significant bit of the driving data to obtain the amplitude of the driving data from the luminance data and the sensing data.