公开(公告)号：US10089951B2

公开(公告)日：2018-10-02

申请号：US15171337

申请日：2016-06-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyang-A Park ,  Cheol-Woo Park ,  Seung-Hwan Park

IPC: G09G3/36 ,  G09G3/20

Abstract: A display apparatus includes a display panel including a first pixel, and a panel driver to generate a first data voltage based on a first or second gamma, to output the first data voltage to the first pixel, to generate a second data voltage based on a third or fourth gamma, and to output the second data voltage to the first pixel, wherein the first and second gammas are based on a first reference gamma, and the third and fourth gammas are based on a second reference gamma different from the first reference gamma, wherein a luminance of an image based on the first or second gammas is higher than a luminance of an image based on the first reference gamma, and wherein a data voltage based on the first gamma has a positive polarity, and a data voltage based on the second gamma has a negative polarity.

公开(公告)号：US09947284B2

公开(公告)日：2018-04-17

申请号：US15092083

申请日：2016-04-06

Applicant: Samsung Display Co., LTD.

Inventor： Cheol-Woo Park ,  Seung-Hwan Park ,  Geun-Jeong Park

IPC: G09G5/00 ,  G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/3696 ,  G09G2310/0251 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2330/023

Abstract: A display apparatus includes a display panel including a first data line, a timing controller which generates an external voltage selection signal, a channel control signal and a data signal, an external voltage generator which selects one of first voltage levels based on the external voltage selection signal to generate a first external voltage, and a data driver including a channel voltage generator which generates a first channel voltage, a first channel line connected to the first data line, a first switch connected between a first node receiving the first channel voltage and a second node connected to the first channel line, and a second switch connected between a third node receiving the first external voltage and a fourth node connected to the first channel line, where the data driver controls operations of the first and second switches based on the channel control signal.