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    DISPLAY DRIVER CIRCUIT AND DEFECT TESTING METHOD
    1.
    发明申请
    DISPLAY DRIVER CIRCUIT AND DEFECT TESTING METHOD 有权

    公开(公告)号：US20250124835A1

    公开(公告)日：2025-04-17

    申请号：US18742820

    申请日：2024-06-13

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Jeeyeon Eom ,  In-Suk Kim ,  Yeonjeong Lee

    IPC: G09G3/00 ,  G09G3/3283 ,  G09G3/3291

    Abstract: An example display driving integrated circuit includes a gamma voltage generator, a source driver, gamma lines, a first transistor, and a second transistor. The gamma voltage generator generates gamma voltages. The source driver generates data signals based on the gamma voltages. The gamma lines connect the gamma voltage generator with the source driver, and transmit the gamma voltages. The first transistor and the second transistor connect to a first end and a second end of a first gamma line of the gamma lines. The first transistor includes a first gate for receiving a first signal. The second transistor includes a second gate for receiving a second signal. The first signal and the second signal are complementary to each other.

    Gradation voltage generator and display driving apparatus
    2.
    发明授权
    Gradation voltage generator and display driving apparatus 有权

    公开(公告)号：US09530357B2

    公开(公告)日：2016-12-27

    申请号：US14835128

    申请日：2015-08-25

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： In-Suk Kim ,  Byung-Hun Han ,  Jae-Hyuck Woo

    IPC: G09G1/00 ,  G09G3/32

    CPC classification number: G09G3/3291 ,  G09G3/3208 ,  G09G3/3225 ,  G09G2310/027 ,  G09G2320/043 ,  G09G2320/0673 ,  G09G2330/028

    Abstract: A gradation voltage generator for applying a gradation voltage according to gamma characteristics of a display panel includes a reference gamma selector that receives a maximum reference voltage, a minimum reference voltage, and a first reference voltage, and selects and outputs a maximum gamma voltage and a minimum gamma voltage from among voltages between the maximum reference voltage and the minimum reference voltage, wherein when the maximum reference voltage changes, the minimum gamma voltage is compensated by a difference the changed maximum reference voltage and the first reference voltage and a gamma curve controller that receives the maximum gamma voltage and the minimum gamma voltage, and generates and outputs a plurality of gradation voltages.

    DISPLAY DRIVER INTEGRATED CIRCUIT AND DISPLAY DEVICE INCLUDING THE SAME
    3.
    发明申请
    DISPLAY DRIVER INTEGRATED CIRCUIT AND DISPLAY DEVICE INCLUDING THE SAME 有权

    公开(公告)号：US20250095541A1

    公开(公告)日：2025-03-20

    申请号：US18823278

    申请日：2024-09-03

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Taek Su Kwon ,  In-Suk Kim ,  Dongwook Suh

    IPC: G09G3/20 ,  G11C19/28

    Abstract: The present disclosure relates to a display driver integrated circuit and a display device. An example of the display driver integrated circuit includes a source driver and a timing controller. The source driver is configured to output a data voltage based on an image data to a first source line and a second source line. The timing controller is configured to receive first data and second data sequentially input to a first source channel that corresponds to the first source line, receive third data and fourth data sequentially input to a second source channel that corresponds to the second source line, perform an operation on the first data and the second data to generate a first change value, perform an operation on the third data and the fourth data to generate a second change value, and based on the first change value and the second change value, determine whether to toggle an output enable signal on an output of the second data in the first source line and an output of the fourth data in the second source line.

    Gamma adjustment circuit and display driver circuit using the same
    4.
    发明授权
    Gamma adjustment circuit and display driver circuit using the same 有权

    公开(公告)号：US11107434B2

    公开(公告)日：2021-08-31

    申请号：US17036627

    申请日：2020-09-29

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： In-Suk Kim ,  Chan Bong Yu

    IPC: G06F1/00 ,  G09G3/36

    Abstract: A gamma adjustment circuit includes: a first node; a second node; a first decoder to which a first voltage signal and a second voltage signal are provided and which outputs either one of the first voltage signal and the second voltage signal as a third voltage signal; an amplifier receiving the third voltage signal as a positive input and outputting a fourth voltage signal; a second decoder receiving the fourth voltage signal and outputting the provided fourth voltage signal as a fifth voltage signal to one of the first and second nodes; a third decoder connected to the first and second nodes, receives the fifth voltage signal from one of the first and second nodes, and outputs the fifth voltage signal to a negative input terminal of the amplifier as a sixth voltage signal; and a first resistor connected between the first node and the second node.

    Electronic device
    6.
    发明授权
    Electronic device 有权

    公开(公告)号：US11710459B2

    公开(公告)日：2023-07-25

    申请号：US17856182

    申请日：2022-07-01

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： In-Suk Kim ,  Jungmoon Kim ,  Woo-Nyoung Lee

    IPC: G09G3/3275 ,  G09G3/20 ,  G09G3/36

    CPC classification number: G09G3/3275 ,  G09G3/2003 ,  G09G3/3685 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2320/0673 ,  G09G2330/028

    Abstract: An electronic device includes a first source group and a second source group, each of which includes a plurality of source channels, and a gamma block that receives first to 2i-th initial voltages (i being an integer of 1 or more), outputs first to 2i-th intermediate voltages by amplifying the first to i-th initial voltages, and outputs first to i-th gamma voltages to the first source group by buffering the first to 2i-th intermediate voltages, and a first buffer block that receives the first to 2i-th intermediate voltages from the gamma block and buffers the first to 2i-th intermediate voltages so as to be output to the second source group, and the gamma block may include a first resistor string including a plurality of resistors connected between nodes from which the first to i-th gamma voltages are output.

    Gamma amplifier including track period, and gamma voltage generator having the same
    7.
    发明授权
    Gamma amplifier including track period, and gamma voltage generator having the same 有权

    公开(公告)号：US11688320B2

    公开(公告)日：2023-06-27

    申请号：US17704595

    申请日：2022-03-25

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： In-Suk Kim ,  Yeonjeong Lee

    IPC: G09G3/20

    CPC classification number: G09G3/20 ,  G09G2310/0291 ,  G09G2310/0294 ,  G09G2310/08 ,  G09G2320/0276 ,  G09G2320/0673

    Abstract: Disclosed is a gamma amplifier which includes a first amplification device that receives a first input signal during a first track period in a first time period, compensates for a first offset voltage from the first input signal during a first compensation period in the first time period, and generates a first output signal during a second time period after the first time period based on a control signal, and a second amplification device that receives a second input signal during a second track period in the second time period, compensates for a second offset voltage from the second input signal during a second compensation period in the second time period, and generates a second output signal during a third time period after the second time period based on the control signal and processing circuitry configured to generate the control signal.

    Display panel driver, source driver, and display device including the source driver
    8.
    发明授权
    Display panel driver, source driver, and display device including the source driver 有权

    公开(公告)号：US11532262B2

    公开(公告)日：2022-12-20

    申请号：US17030912

    申请日：2020-09-24

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Jung Moon Kim ,  In-Suk Kim ,  Chan Bong Yu

    IPC: G09G3/20 ,  G06F7/74

    Abstract: A display driver includes first and second level shifters, respectively receiving a digital signal's most significant bit (MSB) and the digital signal's non-MSB. The first level shifter includes a first input terminal, a first output terminal via which a signal input to the first input terminal is output, a second input terminal, and a second output terminal via which a signal input to the second input terminal is output. The second level shifter includes a third input terminal, a third output terminal via which a signal input to the third input terminal is output, a fourth input terminal, and a fourth output terminal via which a signal input to the fourth input terminal is output. The first input terminal receives an inverted MSB, the second input terminal receives the MSB, the third input terminal receives the non-MSB, and the fourth input terminal receives the inverted non-MSB.

    Source driving circuit and display device including the same
    9.
    发明授权
    Source driving circuit and display device including the same 有权

    公开(公告)号：US10657891B2

    公开(公告)日：2020-05-19

    申请号：US16126575

    申请日：2018-09-10

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： In-Suk Kim ,  Chan-Bong Yu

    IPC: G09G3/3233 ,  G09G3/20 ,  G09G3/3275 ,  G09G3/30 ,  G09G3/3291 ,  G09G3/36 ,  G09G3/3225

    Abstract: A source driving circuit of a display device includes a plurality of unit driving circuits configured to drive a plurality of connection nodes connected to a display panel. Each unit driving circuit includes a plurality of driver circuits and output switches. The driver circuits perform analog-conversion and amplification operations on a plurality of digital data signals to generate a plurality of analog data signals. The output switches are connected in parallel between the driver circuits and a corresponding connection node among the plurality of connection nodes. The output switches transfer the plurality of analog data signals alternately to the corresponding connection node. Each one of the plurality of connection nodes may be driven by more than one of the plurality of driver circuits. The source settling time is reduced and performance of the display device is enhanced by disposing a plurality of unit driving circuits to each connection node.

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