Does temperature on STM modules get high ?

Components from the mainboard duing their operation time gain a little temperature increase. Test based on checking each of the available size of the modules, 5″, 7″ and 10″.
Test results show that the biggest increase in temperature is within 10″ modules.
Below figures present the STM temperature after turning on the display and after 1 h.
 
 
The result may seem like a problem, but this is normal. Due to temperature increase of the components and the FPC cables the areas on the mainboard are noticeably hot. The same goes with the front of the display.
Test environment settings, 100% display backlight, 850 cd/m2, additionally the STM microprocessor is loaded with a program that displays a “motion picture”, which is supposed to give information that the microcontroller is stressed.
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