Information processing apparatus and luminance control method

An information processing apparatus comprising:

• a display panel which displays an image;
• a light source which illuminates the display panel and includes a first area in which a first red light emitting element, first green light emitting element and first blue light emitting element are arranged and a second area which is arranged in one direction with respect to the first area and in which a second red light emitting element connected in series to the first red light emitting element, a second green light emitting element connected in series to the first green light emitting element and a second blue light emitting element connected to the first blue light emitting element are arranged;
• a storage section which stores first luminance control data used to set luminance levels of the first and second red light emitting elements, second luminance control data used to set luminance levels of the first and second green light emitting elements and third luminance control data used to set luminance levels of the first and second blue light emitting elements, the first, second and third luminance control data items being set according to a turn-on period of the light source;
• a first signal generation circuit which generates a first luminance control signal according to the turn-on period of the light source and the first luminance control data;
• a second signal generation circuit which generates a second luminance control signal according to the turn-on period of the light source and the second luminance control data;
• a third signal generation circuit which generates a third luminance control signal according to the turn-on period of the light source and the third luminance control data;
• a first control circuit which is connected to an anode of the first red light emitting element and a cathode of the second red light emitting element to detect a magnitude of a current flowing through the first and second red light emitting elements and adjust the magnitude of the current flowing through the first and second red light emitting elements based on the first luminance control signal generated from the first signal generation circuit and the detected magnitude of the current flowing through the first and second red light emitting elements;
• a second control circuit which is connected to an anode of the first green light emitting element and a cathode of the second green light emitting element to detect a magnitude of a current flowing through the first and second green light emitting elements and adjust the magnitude of the current flowing through the first and second green light emitting elements based on the second luminance control signal generated from the second signal generation circuit and the detected magnitude of the current flowing through the first and second green light emitting elements;
• and
• a third control circuit which is connected to an anode of the first blue light emitting element and a cathode of the second blue light emitting element to detect a magnitude of a current flowing through the first and second blue light emitting elements and adjust the magnitude of the current flowing through the first and second blue light emitting elements based on the third luminance control signal generated from the third signal generation circuit and the detected magnitude of the current flowing through the first and second blue light emitting elements.

A luminance control method for an information processing apparatus including a display panel which displays an image, a light source which illuminates the display panel and includes a first area in which a first red light emitting element, first green light emitting element and first blue light emitting element are arranged and a second area which is arranged in one direction with respect to the first area and in which a second red light emitting element connected in series to the first red light emitting element, a second green light emitting element connected in series to the first green light emitting element and a second blue light emitting element connected to the first blue light emitting element are arranged, a first control circuit which is connected to an anode of the first red light emitting element and a cathode of the second red light emitting element, a second control circuit which is connected to an anode of the first green light emitting element and a cathode of the second green light emitting element, and a third control circuit which is connected to an anode of the first blue light emitting element and a cathode of the second blue light emitting element, comprising:

• adjusting a magnitude of a current flowing through the first and second red light emitting elements by use of the first control circuit;
• adjusting a magnitude of a current flowing through the first and second green light emitting elements by use of the second control circuit;
• and
• adjusting a magnitude of a current flowing through the first and second blue light emitting elements by use of the third control circuit.