公开(公告)号：US09959798B2

公开(公告)日：2018-05-01

申请号：US15001936

申请日：2016-01-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yoon-Gu Kim ,  Bong-Im Park ,  Ik-Hyun Ahn ,  Hyun-sik Hwang ,  Woo-Joo Lee ,  Jin-Young Lee

IPC: G09G5/10 ,  G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/0251 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0276 ,  G09G2320/0673 ,  G09G2360/16

Abstract: A display panel driving apparatus includes a data processing circuit, a data driver, and a gate driver. The data processing circuit increases a first gamma value of input image data of which the gamma value is 0, according to a second gamma value of the input image data of which the second gamma value is not 0. The data driving part outputs a data signal based on the output image data to a data line. The gate driving part outputs a gate signal to a gate line.

公开(公告)号：US10121425B2

公开(公告)日：2018-11-06

申请号：US14825376

申请日：2015-08-13

Applicant: Samsung Display Co., Ltd.

Inventor： Ik-Hyun Ahn ,  Yoon-Gu Kim ,  Woo-Joo Lee ,  Bong-Im Park

IPC: G09G3/36 ,  G09G3/34

Abstract: An adaptive black clipping circuit in a display device includes a data corrector, a register, a pattern detector and a clipping selector. The data corrects input image data to generate corrected image data such that the corrected image data is equal to or greater than a black clipping value where the black clipping value corresponds to the input image data having a grayscale value of zero and the black clipping value is greater than zero. The register stores and provides configuration data. The pattern detector generates a pattern detection signal based on the input image data corresponding to a plurality of rows. The clipping selector selects one of the corrected image data and the configuration data in response to the pattern detection signal to provide output image data.