Data Sheet

a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9341
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reproduced, or disclosed in whole or in part without prior written permission of ILI Technology Corp.
Page 173 of 233
8.3.12. Backlight Control 4 (BBh)
BBh Backlight Control 4
D/CX RDX WRX D17-8 D7 D6 D5 D4 D3 D2 D1 D0 HEX
Command 0 1 ↑ XX 1 0 1 1 1 0 1 1 BBh
Parameter 1 1 ↑ XX
DTH_MV
[3]
DTH_MV
[2]
DTH_MV
[1]
DTH_MV
[0]
DTH_ST
[3]
DTH_ST
[2]
DTH_ST
[1]
DTH_ST
[0]
65
Description
DTH_ST [3:0]/DTH_MV [3:0] : This parameter is used set the minimum limitation of grayscale threshold value. This register
setting will limit the minimum Dth value to prevent the display image from being too white and the
display quality is not acceptable.
DTH_ST [3:0] Description DTH_ST [3:0] Description
4’0h 224 4’8h 192
4’1h 220 4’9h 188
4’2h 216 4’Ah 184
4’3h 212 4’Bh 180
4’4h 208 4’Ch 176
4’5h 204 4’Dh 172
4’6h 200 4’Eh 168
4’7h 196 4’Fh 164
DTH_MV [3:0] Description DTH_MV [3:0] Description
4’0h 224 4’8h 192
4’1h 220 4’9h 188
4’2h 216 4’Ah 184
4’3h 212 4’Bh 180
4’4h 208 4’Ch 176
4’5h 204 4’Dh 172
4’6h 200 4’Eh 168
4’7h 196 4’Fh 164
Transmittance
DTH 255
Gray Scales
Register
Availability
Status Availability
Normal Mode On, Idle Mode Off, Sleep Out Yes
Normal Mode On, Idle Mode On, Sleep Out Yes
Partial Mode On, Idle Mode Off, Sleep Out Yes
Partial Mode On, Idle Mode On, Sleep Out Yes
Sleep In Yes