Lighting device, liquid crystal display device, mobile terminal device and its controlling method
AssigneeNEC LCD Technologies, Ltd.
InventorEitaro Nishigaki
Life of this patent
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Abstract
A lighting device of backlight type that transmits light of a plurality of light emitting elements from a display section includes a plurality of driving sections that drive the plurality of light emitting elements; and drive switching section, provided between the plurality of driving sections and the plurality of light emitting elements, for switching the drive of the plurality of light emitting elements alternately at every fixed cycle.
Claims21
A lighting device of backlight type that transmits light of a plurality of light emitting elements from a display section, comprising:
- a plurality of driving sections that drive the plurality of light emitting elements;
- and
- a drive switching section, provided between the plurality of driving sections and the plurality of light emitting elements, for switching the drive of the plurality of light emitting elements alternately at every fixed cycle.
A liquid crystal display device comprising:
- a liquid crystal display section;
- and
- a lighting device of backlight type that transmits light of a plurality of light emitting elements from the display section, wherein:
- a plurality of driving sections that drive the plurality of light emitting elements;
- and
- a drive switching section, provided between the plurality of driving sections and the plurality of light emitting elements, for switching the drive of the plurality of light emitting elements alternately at every fixed cycle are included.
A mobile terminal device comprising:
- a liquid crystal display section;
- and
- a lighting device of backlight type that transmits light of a plurality of light emitting elements from a display section, wherein:
- a plurality of driving sections that drive the plurality of light emitting elements;
- and
- a drive switching section, provided between the plurality of driving sections and the plurality of light emitting elements, for switching the drive of the plurality of light emitting elements alternately at every fixed cycle are included.
A method for controlling a lighting device of backlight type that transmits light of a plurality of light emitting elements from a back surface of a display section,
- wherein the lighting device comprises a plurality of driving sections that drive the plurality of light emitting elements, a plurality of current switching sections provided between the plurality of driving sections and the plurality of light emitting elements, and a switch signal generating section that supplies a switch signal to the current switching section,
- the method comprising the steps of:
- alternately switching the plurality of light emitting elements and the plurality of driving sections respectively to be connected to each other by each of the plurality of current switching section according to a level change from inactive to active in the drive control signal;
- and
- causing a sense section to detect light of the light emitting elements lit alternately according to the switching and connection to control the switching of emission of the light emitting elements based on the detection result by the current switching section.
Dependencies are inferred from the claim text.