| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid crystal display device in which the lifetime of an organic EL element is prolonged, even when the light-emitting region of a lighting device is constituted of the organic EL element. SOLUTION: The luminance of a linear light-emitting region is gradually raised by starting switch and control of the linear light-emitting region constituting the light-emitting region of the lighting device, which is simultaneous with the start (time ts1) of data rewriting of a liquid crystal. In this case, the luminance is controlled by a light source control part so as to reach a predetermined luminance value, later than a time point (time t1) of the completion of liquid crystal response and before the time (time t2) of switching of lighting of the linear light-emitting region. Thus, the lifetime of the organic EL element is prolonged by the control, because no sudden current supply is no longer conducted on the switching of lighting. COPYRIGHT: (C)2007,JPO&INPIT
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