发明名称 ORGANIC EL DISPLAY DEVICE AND DRIVING METHOD
摘要 A plurality of display pixels each include: an organic EL element; a capacitance element that holds a first voltage used to cause the organic EL element to emit light; a drive transistor that supplies a current corresponding to the first voltage to the organic EL element; and a capacitance element that holds a second voltage that is a next voltage to be held in the capacitance element. A power line is connected to a drain electrode of the drive transistor or a cathode of the organic EL element. An adjustment unit adjusts the voltage applied to the power line to be lower than the predetermined voltage, when a total current of the plurality of display pixels in the case where a current corresponding to the second voltage is supplied to the organic EL element in each of the plurality of display pixels is greater than or equal to a threshold.
申请公布号 US2016343305(A1) 申请公布日期 2016.11.24
申请号 US201415114530 申请日期 2014.12.22
申请人 JOLED INC. 发明人 KAMIYAMAGUCHI Jun;TAKAHARA Hiroshi
分类号 G09G3/3291;G09G3/20 主分类号 G09G3/3291
代理机构 代理人
主权项 1. An organic EL display device comprising: a plurality of display pixels arranged in a matrix; and an adjustment unit configured to adjust a predetermined voltage applied to a power line connected to the plurality of display pixels, wherein each of the plurality of display pixels includes: a light emitting element; a first capacitance element that holds a first voltage used to cause the light emitting element to emit light; a drive transistor that causes the light emitting element to emit light, by supplying a current corresponding to the first voltage held in the first capacitance element to the light emitting element; and a second capacitance element that holds a second voltage different from the first voltage held in the first capacitance element, the second voltage being a next voltage to be held in the first capacitance element, the power line is connected to a drain electrode of the drive transistor or a cathode of the light emitting element, and the adjustment unit is configured to adjust the voltage applied to the power line to be lower than the predetermined voltage, when a total sum of current of the plurality of display pixels in the case where a current corresponding to the second voltage is supplied to the light emitting element in each of the plurality of display pixels is greater than or equal to a threshold.
地址 Tokyo JP