公开(公告)号：US20240233609A9

公开(公告)日：2024-07-11

申请号：US18466892

申请日：2023-09-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ying-Da Chang ,  Chulho Choi ,  Yu-Chieh Huang ,  Ching-Chieh Wu ,  Hajoon Shin ,  Zhen-Guo Ding ,  Jia-Way Chen ,  Kyunlyeol Lee ,  Yongjoo Song

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2310/0267 ,  G09G2310/0291 ,  G09G2320/0626 ,  G09G2320/0673

Abstract: A gamma tap circuit includes: (i) a first gamma division circuit configured to generate a first gamma tap voltage by performing voltage division of an upper gamma tap voltage and a lower gamma tap voltage, in-sync with a first clock signal CK1 and a first complementary clock signal CK1b, which is 180° out-of-phase relative to CK1, (ii) a second gamma division circuit configured to generate a second gamma tap voltage by performing voltage division of the upper gamma tap voltage and the first gamma tap voltage, in-sync with a second clock signal CK2 and a second complementary clock signal CK2b, which is 180° out-of-phase relative to CK2, and (iii) a third gamma division circuit configured to generate a third gamma tap voltage by performing voltage division of the first gamma tap voltage and the lower gamma tap voltage, in response to CK2 and CK2b, which have a lower frequency relative to CK1 and CK1b.

公开(公告)号：US12020618B2

公开(公告)日：2024-06-25

申请号：US17990179

申请日：2022-11-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chulho Choi ,  Yu-Chieh Huang ,  Hajoon Shin ,  Han-Chiang Su ,  Jia-Way Chen ,  Kyunlyeol Lee ,  Yi-Chien Wen ,  Yongjoo Song ,  Shih-Chiao Huang

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/0251 ,  G09G2310/0275 ,  G09G2320/0223

Abstract: The present disclosure provides methods, apparatuses, and non-transitory computer-readable mediums for setting charge sharing times, which may be adaptable to a display panel. In some embodiments, the apparatus includes a pixel array and a source driver configured to drive each column of the pixel array. In some embodiments, a setting method of charge sharing times includes grouping a plurality of pixels of a pixel array in a row direction to form a plurality of pixel groups. The setting method further includes setting a charge sharing time of each pixel group of the plurality of pixel groups according to a quantity of pixel groups in the plurality of pixel groups. A charge sharing time of a pixel group located closest to a source driver in the pixel array is greater than a charge sharing time of a pixel group located farthest from the source driver in the pixel array.

公开(公告)号：US12159567B2

公开(公告)日：2024-12-03

申请号：US18466892

申请日：2023-09-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ying-Da Chang ,  Chulho Choi ,  Yu-Chieh Huang ,  Ching-Chieh Wu ,  Hajoon Shin ,  Zhen-Guo Ding ,  Jia-Way Chen ,  Kyunlyeol Lee ,  Yongjoo Song

IPC: G09G3/20 ,  G09G3/36

Abstract: A gamma tap circuit includes: (i) a first gamma division circuit configured to generate a first gamma tap voltage by performing voltage division of an upper gamma tap voltage and a lower gamma tap voltage, in-sync with a first clock signal CK1 and a first complementary clock signal CK1b, which is 180° out-of-phase relative to CK1, (ii) a second gamma division circuit configured to generate a second gamma tap voltage by performing voltage division of the upper gamma tap voltage and the first gamma tap voltage, in-sync with a second clock signal CK2 and a second complementary clock signal CK2b, which is 180° out-of-phase relative to CK2, and (iii) a third gamma division circuit configured to generate a third gamma tap voltage by performing voltage division of the first gamma tap voltage and the lower gamma tap voltage, in response to CK2 and CK2b, which have a lower frequency relative to CK1 and CK1b.

公开(公告)号：US12154514B2

公开(公告)日：2024-11-26

申请号：US18139079

申请日：2023-04-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Skaut Su ,  Alvin Lee ,  Donken Huang ,  Chris Huang ,  Jason Ding ,  Kyunlyeol Lee

IPC: G09G3/3275

Abstract: A source driver and a method for color swapping are provided. The source driver includes: a processor configured to: obtain, from an application processor, a plurality of sub-pixel data, add a tag to each of the plurality of sub-pixel data to generate a plurality of new sub-pixel data, the tag indicating color information of the sub-pixel data, and perform color swapping on the plurality of new sub-pixel data; a multiplexer circuit communicatively coupled to the processor and configured to: obtain each of the plurality of color swapped new sub-pixel data in sequence, and select a corresponding gamma voltage according to the tag of the color swapped new sub-pixel data; and an analog amplifier circuit communicatively coupled to the multiplexer circuit and configured to provide a source driving signal to a corresponding sub-pixel in a pixel array according to the color swapped new sub-pixel data and the corresponding gamma voltage.

公开(公告)号：US20240135859A1

公开(公告)日：2024-04-25

申请号：US18466892

申请日：2023-09-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ying-Da Chang ,  Chulho Choi ,  Yu-Chieh Huang ,  Ching-Chieh Wu ,  Hajoon Shin ,  Zhen-Guo Ding ,  Jia-Way Chen ,  Kyunlyeol Lee ,  Yongjoo Song

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2310/0267 ,  G09G2310/0291 ,  G09G2320/0626 ,  G09G2320/0673

Abstract: A gamma tap circuit includes: (i) a first gamma division circuit configured to generate a first gamma tap voltage by performing voltage division of an upper gamma tap voltage and a lower gamma tap voltage, in-sync with a first clock signal CK1 and a first complementary clock signal CK1b, which is 180° out-of-phase relative to CK1, (ii) a second gamma division circuit configured to generate a second gamma tap voltage by performing voltage division of the upper gamma tap voltage and the first gamma tap voltage, in-sync with a second clock signal CK2 and a second complementary clock signal CK2b, which is 180° out-of-phase relative to CK2, and (iii) a third gamma division circuit configured to generate a third gamma tap voltage by performing voltage division of the first gamma tap voltage and the lower gamma tap voltage, in response to CK2 and CK2b, which have a lower frequency relative to CK1 and CK1b.

公开(公告)号：US20240119906A1

公开(公告)日：2024-04-11

申请号：US18139079

申请日：2023-04-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Skaut Su ,  Alvin Lee ,  Donken Huang ,  Chris Huang ,  Jason Ding ,  Kyunlyeol Lee

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2310/0297 ,  G09G2320/0673

Abstract: A source driver and a method for color swapping are provided. The source driver includes: a processor configured to: obtain, from an application processor, a plurality of sub-pixel data, add a tag to each of the plurality of sub-pixel data to generate a plurality of new sub-pixel data, the tag indicating color information of the sub-pixel data, and perform color swapping on the plurality of new sub-pixel data; a multiplexer circuit communicatively coupled to the processor and configured to: obtain each of the plurality of color swapped new sub-pixel data in sequence, and select a corresponding gamma voltage according to the tag of the color swapped new sub-pixel data; and an analog amplifier circuit communicatively coupled to the multiplexer circuit and configured to provide a source driving signal to a corresponding sub-pixel in a pixel array according to the color swapped new sub-pixel data and the corresponding gamma voltage.