Patent ID: 11929042
Assignee: NICHIA CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. An image display method using an image display device including:
a backlight including a plurality of light-emitting regions arranged in a matrix configuration in a first direction and a second direction, the light-emitting regions being divided into a plurality of first areas in the first direction; and
a liquid crystal panel on the backlight, the liquid crystal panel including a plurality of pixels arranged in a matrix configuration in the first and second directions, the pixels being divided into a plurality of second areas in the first direction, the method comprising:
generating, based on a synchronization signal, a subdivided synchronization signal having a period less than a period of the synchronization signal;
performing a first operation to cause light to be emitted from the light-emitting regions at respective intensity in accordance with frame image data for a duration of time corresponding to the period of the synchronization signal, sequentially with respect to each of the first areas; and
performing a second operation to apply voltages to the pixels at respective levels in accordance with the frame image data, sequentially with respect to each of the second areas,
wherein light-emitting regions in each of the first areas are repeatedly turned on and off a plurality of times during the first operation thereof at timings in correspondence with pulses of the subdivided synchronization signal generated during the first operation thereof, and
wherein a number of times the light-emitting regions in each of the first areas are turned on and off during the first operation thereof is less than a number of pulses of the subdivided synchronization signal included in the period of the synchronization signal.