Display apparatus using a backlight

摘要

The instant application describes a display apparatus that includes a display panel configured to display an image; and a backlight unit configured to illuminate the display panel from a back of the display panel. The backlight unit includes: N light-emitting diode strings connected in parallel with each other, each of the N light-emitting diode strings includes M light-emitting diodes connected in series, N being an integer of 2 or more and M being an integer of 1 or more; a power source unit connected in series with the N light-emitting diode strings and configured to generate a voltage; a drive unit connected in series with the N light-emitting diode strings and the power source unit and configured to supply currents to the N light-emitting diode strings; and a current regulator configured to regulate current flowing in each of the N light-emitting diode strings.

主权项

1. A display apparatus comprising:
a display panel configured to display an image; and a backlight unit configured to illuminate the display panel from a back of the display panel, wherein the backlight unit includes:
N light-emitting diode strings connected in parallel with each other, each of the N light-emitting diode strings includes M light-emitting diodes connected in series, N being an integer of 2 or more and M being an integer of 1 or more;a power source unit connected in series with the N light-emitting diode strings and configured to generate a voltage;a drive unit connected in series with the N light-emitting diode strings and the power source unit and configured to supply currents to the N light-emitting diode strings; anda current regulator configured to regulate current flowing in each of the N light-emitting diode strings, each of the N light-emitting diode strings illuminates different regions of the display panel, and the N light-emitting diode strings include a first light-emitting diode string and a second light-emitting diode string, illuminating regions adjacent to each other, the display apparatus further comprises a light emission controller configured to perform a control so that current is supplied from the drive unit to only the first light-emitting diode string during a first period, that current is supplied from the drive unit to each of the first and second light-emitting diode strings during a second period subsequent to the first period, and that current is supplied from the drive unit to only the second light-emitting diode string during a third period subsequent to the second period.