US 12,033,591 B2
Display device and calibration method
Peng-Hsiang Wu, Kaohsiung (TW); Hung-Pao Wu, Kaohsiung (TW); Chun-Yi Sun, Kaohsiung (TW); Jon-Hong Lin, Kaohsiung (TW); Lian-Young Lee, Kaohsiung (TW); and Bo-Ru Huang, Kaohsiung (TW)
Assigned to Radiant Opto-Electronics Corporation, Kaohsiung (TW)
Filed by Radiant Opto-Electronics Corporation, Kaohsiung (TW)
Filed on Dec. 2, 2022, as Appl. No. 18/060,973.
Application 18/060,973 is a continuation of application No. PCT/CN2021/130863, filed on Nov. 16, 2021.
Prior Publication US 2023/0154419 A1, May 18, 2023
Int. Cl. G09G 3/34 (2006.01)
CPC G09G 3/3406 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0626 (2013.01); G09G 2320/0693 (2013.01); G09G 2360/16 (2013.01)] 8 Claims
OG exemplary drawing
 
8. A display device comprising:
a display panel comprising a plurality of regions;
a backlight module comprising a plurality of light emitting units, wherein each of the regions corresponds to at least one of the light emitting units; and
a circuit comprising at least one calibration lookup table corresponding to a first light emitting unit of the light emitting units, wherein the at least one calibration lookup table records a parameter and a plurality of duty cycles,
wherein the circuit is configured to access the calibration lookup table to obtain one of the duty cycles and determine an output duty cycle,
wherein the circuit is configured to determine a current value of the first light emitting unit to drive the first light emitting unit according to the output duty cycle and the parameter,
wherein the circuit is configured to perform a local dimming algorithm to calculate a setting value of the first light emitting unit.