Seiko Epson Corporation

Kentaro Adachi

Kumar Anandabairavasamy Anand

Chisato Higuchi

A circuit device is used in a display apparatus. The display apparatus includes a display panel and a backlight including a plurality of light sources. The plurality of light sources are respectively provided corresponding to a plurality of areas of the display panel. The circuit device includes a light amount abnormality detection circuit, a dimming circuit, and a color correction circuit. The light amount abnormality detection circuit detects a light amount abnormality of the light source. The dimming circuit performs light amount compensation processing of compensating for a light amount of an area corresponding to an abnormal light source by adjusting a light amount of a light source other than the abnormal light source that is a light source in which the light amount abnormality is detected. The color correction circuit performs color correction according to the adjusted light amount on image data of an area corresponding to an adjustment target light source that is the light source whose light amount is adjusted.

Circuit device and display apparatus

A timing controller that controls a drive circuit of a display panel includes: a delay output unit configured to output a delay value based on a delay time of a second pulse with respect to a first pulse that is output by the drive circuit, the first pulse being generated in synchronization with a data signal supplied to the display panel; and an error output unit configured to compare the delay value and a threshold value to each other and output an error signal based on a result of the comparison, and the second pulse is a pulse that is output from the drive circuit based on the first pulse.

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Chino, Japan

Kentaro Adachi