(19)
(11)EP 2 889 857 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
12.08.2015 Bulletin 2015/33

(43)Date of publication A2:
01.07.2015 Bulletin 2015/27

(21)Application number: 14180239.7

(22)Date of filing:  07.08.2014
(51)International Patent Classification (IPC): 
G09G 3/20(2006.01)
H03M 1/78(2006.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30)Priority: 31.12.2013 KR 20130169471

(71)Applicant: LG Display Co., Ltd.
Seoul 150-721 (KR)

(72)Inventor:
  • Yang, Yeunhyeok
    142-871 Seoul (KR)

(74)Representative: Viering, Jentschura & Partner Patent- und Rechtsanwälte 
Am Brauhaus 8
01099 Dresden
01099 Dresden (DE)

  


(54)Gamma reference voltage generating circuit and display device including the same


(57) A gamma reference voltage generating circuit and a display device including the same are disclosed. The gamma reference voltage generating circuit include a first voltage follower (GMA1) configured to receive a first reference voltage generated by a first digital-to-analog converter (DAC1) and output a first gamma reference voltage (gamma1) and second to (n-1)th voltage followers (GMA2, GMA3 ... GMA8) each generating second to (n-1)th gamma reference voltages (gamma2, gamma3 ... gamma8) being generated based on the first gamma reference voltage output from the first voltage follower (gamma1).







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