US 11,922,840 B2
Liquid crystal display device, image display system and vehicle
Yasuhiro Tamano, Kyoto (JP); Shinji Kawata, Kyoto (JP); and Yoko Nomaguchi, Kyoto (JP)
Assigned to Rohm Co., Ltd., Kyoto (JP)
Filed by Rohm Co., Ltd., Kyoto (JP)
Filed on Jul. 13, 2022, as Appl. No. 17/863,677.
Application 17/863,677 is a continuation of application No. 16/644,319, granted, now 11,475,808, previously published as PCT/JP2018/033318, filed on Sep. 7, 2018.
Claims priority of application No. 2017-172957 (JP), filed on Sep. 8, 2017; application No. 2017-172960 (JP), filed on Sep. 8, 2017; and application No. 2017-172965 (JP), filed on Sep. 8, 2017.
Prior Publication US 2022/0351655 A1, Nov. 3, 2022
Int. Cl. G09G 3/00 (2006.01); G09G 3/36 (2006.01)
CPC G09G 3/006 (2013.01) [G09G 3/3696 (2013.01); G09G 2330/12 (2013.01); G09G 2380/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An image display system including a plurality of display devices, wherein each of the plurality of display devices has a fault detection function of detecting a fault in itself, the image display system being operable such that when a fault is detected in a certain display device among the plurality of display devices, at least either at least one display device other than the certain display device among the plurality of display devices or a notification device that performs notification other than display notifies that a fault is detected in the certain display device, and at least one display device other than the certain display device among the plurality of display devices displays an image for the certain display device,
wherein the display device is a liquid crystal display device including: a pixel array including a plurality of rows of gate lines, a plurality of columns of source lines, a plurality of switches, and a plurality of liquid crystal cells; a gate driver integrated circuit (IC) connected to the gate lines; a source driver IC connected to the source lines; a timing control IC arranged to control operation timings of the gate driver IC and the source driver IC; and a system power supply IC arranged to supply a power supply voltage to the source driver IC, and each of the timing control IC and the system power supply IC has a function of detecting an abnormality in the gate driver IC and an abnormality in the source driver IC, and
wherein the liquid crystal display device further includes a level shifter arranged to shift a level of a control signal supplied from the timing control IC, and the system power supply IC is operable to detect an abnormality in the gate driver IC on the basis of a power supply voltage value supplied to the level shifter.