公开(公告)号：US20220319409A1

公开(公告)日：2022-10-06

申请号：US17517736

申请日：2021-11-03

Applicant: Samsung Display Co., Ltd.

Inventor： Se Hyuk PARK ,  Hong Soo KIM ,  Jin Young ROH ,  Hyo Jin LEE ,  Jae Keun LIM

IPC: G09G3/3225

Abstract: A display device comprises pixels, an emission control driver, a scan driver, and a timing controller for selecting whether the display device is to operate in a first display mode in which the display device is driven at a first frequency or a second display mode in which the display device is driven at a second frequency lower than the first frequency based on input image data. The first display mode comprises first frame periods, and the second display mode comprises second frame periods having at least two sub-frames having a period equal to the first frame period. A total time required to supply the scan signals to the scan lines in one first frame period of the first frame periods and a total time required to supply the scan signals to the scan lines in one second frame period of the second frame periods are substantially same.

公开(公告)号：US20220309998A1

公开(公告)日：2022-09-29

申请号：US17535340

申请日：2021-11-24

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Keun LIM ,  Hong Soo KIM ,  Jin Young ROH ,  Se Hyuk PARK ,  Woo Mi BAE ,  Hyo Jin LEE

IPC: G09G3/32

Abstract: Provided is a display device comprising a pixel unit including first pixel rows connected to first scan lines and second pixel rows alternating with the first pixel rows and connected to second scan lines, a scan driver including first scan stages connected to the first scan lines and second scan stages connected to the second scan lines, and an emission driver including emission stages in which each of emission lines is connected to two or more pixel rows. Accordingly, the display device is capable of changing a display frequency and maintaining the same cycle in which luminance decreases when the display frequency is changed.

公开(公告)号：US20220293027A1

公开(公告)日：2022-09-15

申请号：US17521066

申请日：2021-11-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se Hyuk PARK ,  Jin Young ROH ,  Hyo Jin LEE ,  Jae Keun LIM

IPC: G09G3/20

Abstract: A display system includes: a host processor which outputs first image data and outputs scan frequency information and a partial scan enable signal, based on an image driving frequency; a display module controlled by the host processor; and an interface. The display module includes: a display driving circuit which controls a selection of pixel rows to which the data signals are supplied based on the scan frequency information and the partial scan enable signal; and a display panel which displays an image on selected pixel rows based on the data signals. In a video mode of the interface, the host processor divides and outputs the first image data through the interface during transmission periods, based on the image driving frequency, and suspends an output of the first image data through the interface during suspend periods.

公开(公告)号：US20220262296A1

公开(公告)日：2022-08-18

申请号：US17535331

申请日：2021-11-24

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Keun LIM ,  Hong Soo KIM ,  Jin Young ROH ,  Se Hyuk PARK ,  Hyo Jin LEE

IPC: G09G3/20

Abstract: Provided is a display device including a pixel unit in which each of pixel rows extends in a first direction, odd numbered pixel rows and even numbered pixel rows are alternately disposed in a second direction, and pixels included in the pixel rows are designated as dots having two or more units, a gray difference calculator that calculates difference between representative grays of dots adjacent in the second direction among dots of a p-th pair of the pixel rows, an edge detector that increases an edge dot number when a first condition in which the difference between the representative grays is larger than a first threshold value is satisfied, and a first pattern detector that increases an edge number when the edge dot number is larger than a second threshold value, and that generates a first pattern detection signal when the edge number is larger than a third threshold value.

公开(公告)号：US20220020311A1

公开(公告)日：2022-01-20

申请号：US17220190

申请日：2021-04-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Keun LIM ,  Han Bit KIM ,  Hong Soo KIM ,  Jin Young ROH ,  Se Hyuk PARK ,  Hyo Jin LEE

IPC: G09G3/20

Abstract: A display device of the invention includes: a pixel portion including first pixel rows connected to first scan lines and second pixel rows connected to second scan lines; a scan driver including first and second stages connected to the first scan lines and the second scan lines; and a data driver connected to the first and second pixel rows through same data lines. The first stages are connected to first clock lines, the second stages are connected to second clock lines, a first start stage of the first stages and a second start stage of the second stages are connected to a same scan start line, each first stage excluding the first start stage is connected to a first scan line of a previous first stage, and each second stage excluding the second start stage is connected to a second scan line of a previous second stage.

公开(公告)号：US20210398490A1

公开(公告)日：2021-12-23

申请号：US17122505

申请日：2020-12-15

Applicant: Samsung Display Co., Ltd.

Inventor： Se Hyuk PARK ,  Ji Youn KIM ,  Hong Soo KIM ,  Jin Young ROH ,  Hyo Jin LEE ,  Jae Keun LIM

IPC: G09G3/3266

Abstract: A display device includes: a pixel part including a plurality of pixels; a first scan driver to provide a first scan signal to each of the pixels; and an initialization controller to control the first scan driver. Each of the pixels includes a pixel circuit including a plurality of transistors, and a light emitting element connected to the pixel circuit, an anode of the light emitting element is to be initialized to a first initialization voltage in response to the first scan signal having a gate-on level, and the initialization controller is to determine whether to provide the first scan signal having the gate-on level to each of the pixels for each frame.

公开(公告)号：US20210390898A1

公开(公告)日：2021-12-16

申请号：US17320120

申请日：2021-05-13

Applicant: Samsung Display Co., Ltd.

Inventor： Jin Young ROH ,  Hyo Jin LEE ,  Jae Keun LIM ,  Hong Soo KIM ,  Se Hyuk PARK

IPC: G09G3/20 ,  G09G3/3258

Abstract: A display device includes: a pixel part to display an image and including pixels receiving a reference voltage; a controller to determine a value of the reference voltage based on a load of the entire pixel part, and to control a grayscale range of image data according to a location in the pixel part based on the reference voltage; a data driver to supply data voltages to the pixel part through data lines based on grayscale ranges adjusted for each location in the pixel part; and a scan driver to supply a scan signal to the pixels through scan lines.

公开(公告)号：US20200042759A1

公开(公告)日：2020-02-06

申请号：US16387545

申请日：2019-04-18

Applicant: Samsung Display Co. Ltd.

Inventor： Jeon Kyoo KIM ,  Jun Yong SONG ,  Jae Keun LIM

IPC: G06K9/00 ,  G06F3/044 ,  G09G3/3233

Abstract: A display device has a display area with a first area in which a fingerprint is recognized and a second area in which a fingerprint is not recognized, and a non-display area. A fingerprint sensing unit is disposed to overlap with the first area. A first pixel set is disposed to overlap with the first area, and a second pixel set is disposed to overlap with the second area, each set including a plurality of pixels. A first voltage signal is provided to the first pixel set as a variable frequency signal, and includes a first period during which the first voltage signal is a first frequency signal, a second period during which the first voltage signal is a second frequency signal having a lower frequency than the first frequency signal, and a third period during which the first voltage signal is the first frequency signal.

公开(公告)号：US20160372037A1

公开(公告)日：2016-12-22

申请号：US15078876

申请日：2016-03-23

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Keun LIM ,  Hee Rim SONG ,  Mu Kyung JEON ,  Chong Chul CHAI

IPC: G09G3/3233 ,  G09G3/3266 ,  H01L27/32

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0214 ,  G09G2320/0219 ,  G09G2320/0233 ,  H01L27/3262 ,  H01L27/3265 ,  H01L27/3276

Abstract: A pixel includes: an organic light emitting diode including a cathode electrode connected to a second power source; a first transistor including a first electrode connected to a first power source, and to control an amount of current flowing from the first power source to the second power source via the organic light emitting diode in response to a data signal; a plurality of second transistors connected in series between a gate electrode of the first transistor and an initialization power source, and to be turned on when a scan signal is supplied to an i−1-th (i is a natural number) scan line; and a first capacitor connected between a voltage source and a first node, the first node being between the plurality of second transistors.

Abstract translation: 像素包括：有机发光二极管，包括连接到第二电源的阴极; 第一晶体管，包括连接到第一电源的第一电极，并且响应于数据信号，经由有机发光二极管控制从第一电源流向第二电源的电流量; 多个第二晶体管串联连接在第一晶体管的栅电极和初始化电源之间，并且当向第i-1（i为自然数）扫描线提供扫描信号时导通; 以及连接在电压源和第一节点之间的第一电容器，所述第一节点位于所述多个第二晶体管之间。

公开(公告)号：US20160307537A1

公开(公告)日：2016-10-20

申请号：US15042029

申请日：2016-02-11

Applicant: Samsung Display Co., Ltd

Inventor： Jun Hyun PARK ,  Sung Hwan KIM ,  Se Young SONG ,  Kyoung Ju SHIN ,  Jae Keun LIM

IPC: G09G3/36 ,  H03K17/687

CPC classification number: G09G3/3677 ,  G09G3/20 ,  G09G2300/0465 ,  G09G2310/0267 ,  G09G2310/0286 ,  G09G2310/0289 ,  G11C19/28 ,  H03K17/6871

Abstract: There is provided a stage circuit capable of minimizing a mounting area. The stage circuit includes: an output unit configured to supply a voltage of a first node, an i-th (i is a natural number) carry signal, and to supply an i-th scan signal in response to the voltage of the first node, a voltage of a second node, and a first clock signal, a controller configured to control the voltage of the second node in response to the first clock signal; a pull-up unit configured to control the voltage of the first node in response to a carry signal of a previous stage and a voltage of a first node of the previous stage, and a pull-down unit configured to control the voltage of the first node in response to the voltage of the second node and a carry signal of a next stage.

Abstract translation: 提供能够最小化安装面积的平台电路。 舞台电路包括：输出单元，被配置为提供第一节点的电压，第i（i是自然数）进位信号，并且响应于第一节点的电压提供第i个扫描信号 ，第二节点的电压和第一时钟信号，被配置为响应于第一时钟信号来控制第二节点的电压的控制器; 上拉单元，被配置为响应于前一级的进位信号和前一级的第一节点的电压来控制第一节点的电压;以及下拉单元，被配置为控制第一节点的电压 响应于第二节点的电压和下一级的进位信号。