Patent ID: 7248244

Claim:
A display device, comprising: a light source that emits N color lights, where N is a positive integer other than unity; and a displaying unit that controls either of transmission or reflection of the color light from the light source and reflection of an external light, wherein one field is divided into N subfields, a specific color light among the N lights is emitted for at least a partial time of the subfield, a transmission-type color displaying is executed by displaying an image corresponding to the specific color light on the displaying unit, a duration of a subfield is set to be different from a duration of any other subfield in same field, and a reflection-type gradation displaying using the external light is executed based on a combination of the durations of the subfields, wherein a duration of a subfield for a color light with higher visibility is set to be longer than a duration of a subfield for a color light with lower visibility among the N subfields, while a light emitting time for the color light with the higher visibility is set to be equal to a light emitting time for a color light with lower visibility.