White-light　emission　with　tunable　color　temperature　have　potential　applications　in　the　fields　of　smart　lighting　and　backlight.　In　this　study,　we　introduced　an　electron　blocking　layer　(EBL)　between　red　and　green　emission　layers　(EMLs)　in　a　quantum-dot　light-emitting　diode　(QLED).　The　emitting　color　of　QLED　can　be　tuned　from　red　to　green　as　the　carrier　distribution　and　recombination　region　are　regulated　by　the　applied　voltage.　In　addition,　the　color　tunable　QLED　device　was　integrated　with　a　GaN-based　blue　light　emitting　diode　(LED),　achieving　a　hybrid　QLED/LED　device　for　white-light　emission.　Under　the　alternate-current　(AC)　driving　method,　the　QLED　was　forwardly　driven　while　the　LED　was　reversely　biased,　and　thus,　both　devices　can　be　independently　addressed　by　the　polarity　of　the　AC　driving　voltage.　The　results　showed　that　the　color　temperature　of　white-light　emission　can　be　tuned　from　3102K　(warm　white)　to　12853K　(cold　white)　and　the　highest　color　rendering　index　(CRI)　of　88.6　can　be　also　achieved,　exhibiting　great　prospects　in　the　application　of　lighting.