Patent ID: 11915664
Assignee: JAPAN DISPLAY INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 9:
10. A display device, comprising:
a display panel having a display region in which a plurality of pixels are provided;
a plurality of temperature sensors; and
a control integrated circuit (IC) configured to control operations of the display panel and the temperature sensors,
wherein
a plurality of temperature detection regions in which the temperature sensors are arranged are provided to overlap the display region,
the display region has a plurality of partial regions that overlap the temperature detection regions, respectively,
the control IC is provided capable of controlling the display region on a partial region basis,
at least either signal lines of the display panel or scan lines of the display panel, and the temperature sensors are coupled to the control IC,
the control IC includes:
a display controller configured to control the operation of the display panel;
a temperature detection controller configured to perform processing related to the operation of the temperature sensors; and
a light source controller configured to control the operation of a light source device that illuminates the display panel,

the control IC performs predetermined abnormality countermeasure processing when a temperature equal to or higher than a first temperature is detected in one or more of the temperature detection regions,
the abnormality countermeasure processing includes one or more of first processing, second processing, and third processing,
the first processing causes a display update frequency of the display panel to be lower than the display update frequency before the temperature equal to or higher than the first temperature is detected,
the second processing causes an operating frequency of at least a part of functions included in the control IC to be lower than the operating frequency before the temperature equal to or higher than the first temperature is detected,
the third processing causes a luminance of light illuminating the display panel to be lower than the luminance before the temperature equal to or higher than the first temperature is detected, and
the temperature detection controller performs control such that a temperature detection frequency per unit time when the abnormality countermeasure processing is performed is higher than the temperature detection frequency per unit time when no abnormality countermeasure processing is performed.