Gate driver IC, chip-on-film substrate, and display apparatus

    公开(公告)号:US10403197B2

    公开(公告)日:2019-09-03

    申请号:US15126082

    申请日:2014-12-24

    Applicant: JOLED INC.

    Abstract: A gate driver IC includes: N shift registers which generate a gate signal to be supplied to a display panel substrate, N being a natural number; (N+k) power supply terminals (PA1 to PD1, Pa1, and Pc1) for power supply from outside, k being a natural number; and (N+k) internal lines connected to the (N+k) power supply terminals, wherein N internal lines among the (N+k) internal lines connect, one-to-one, N power supply terminals among the (N+k) power supply terminals and the N shift registers, and k internal lines other than the N internal lines among the (N+k) internal lines connect, one-to-one, k power supply terminals other than the N power supply terminals among the (N+k) power supply terminals and k internal lines selected from among the N internal lines.

    Source driver circuit, and display device

    公开(公告)号:US10043454B2

    公开(公告)日:2018-08-07

    申请号:US15509674

    申请日:2015-09-02

    Applicant: JOLED INC.

    Abstract: A source driver circuit is provided that supplies, to each of pixels arranged in a matrix, an electrical signal corresponding to a pixel signal. The source driver circuit includes a reference voltage generating unit, which includes a plurality of resistors connected in series, and a resistor, for gradation voltage generation that divides an input voltage into voltages of magnitudes. The source driver circuit also includes a gradation voltage generating circuit, which is connected between the plurality of resistors and is also connected between the plurality of resistors and the resistor for gradation voltage generation, that includes an offset-canceling amplifier. The offset-canceling amplifier alternates between an offset extraction state, in which an offset voltage of the offset-canceling amplifier is extracted, and a buffer output state, in which the offset voltage is added to the pixel signal and outputted.

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