Patent ID: 9082359
Filing Date: 2015-07-14
Classification: G09G,H04N

Abstract:
1. A projection display apparatus, comprising: a light source that emits light; a light-source driving circuit that drives the light source so that an amount of change of a brightness of the light per unit time cyclically changes; a first light modulation element that modulates the light into a first modulated light corresponding to a first image data at each of a first combination of subfields in a field; a second light modulation element that modulates the light into a second modulated light corresponding to a second image data at each of a second combination of subfields in the field; and an optical element that (i) combines the first modulated light with the second modulated light into a combined light and (ii) projects the combined light, the first combination of subfields including a first subfield and a second subfield, the second subfield being longer than the first subfield, the second combination of subfields including a third subfield and a fourth subfield, the fourth subfield being longer than the third subfield, the amount of change of the brightness of the light per unit time including a first amount of change and a second amount of change, the second amount of change being different than the first amount of change, and the first subfield and the third subfield being arranged at a position corresponding to a timing when the amount of change of the brightness of the light per unit time changes from the first amount of change to the second amount of change.