Patent ID: 9286838
Filing Date: 2016-03-15
CPC Classification: G01K,G09G

Claim Text:
1. A display device having a display panel disposed in a casing, comprising: two or more temperature sensors disposed in different positions; a control means configured to temperature-compensate display characteristics on the basis of the temperatures detected by the temperature sensors; specification means configured to specify correlation information indicating a correlation between temperatures detected by the temperature sensors; and estimation means configured to estimate an ambient temperature around the display device on the basis of the correlation information specified by the specification means and the temperatures detected by the temperature sensors, wherein the temperature sensors are disposed in the positions whose temperatures change in a different manner until reaching thermal equilibrium, wherein the specification means specifies; (i) when a difference temperature between a first temperature difference and a second temperature difference, based on the temperatures detected by the temperature sensors is smaller than a predetermined threshold temperature, a correlation information where the first temperature difference and the second temperature difference increase at different rates with time; or (ii) when the difference temperature between the first temperature difference and the second temperature difference is greater than the predetermined threshold temperature, a correlation information where the first temperature difference and the second difference increase at similar rates with time and further comprising a backlight for the display panel, wherein the estimation means estimates the ambient temperature using the one piece of correlation information specified by the specification means.