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1. 发明申请

US20220084450A1 DISPLAY DEVICE AND METHOD OF DRIVING THE SAME 有权
公开(公告)号：US20220084450A1
公开(公告)日：2022-03-17
申请号：US17220087
申请日：2021-04-01
申请人： SAMSUNG DISPLAY CO., LTD.
发明人： Jung Taek KIM , Kyun Ho KIM , Jae Woo RYU , Joon Suk BAIK , Se Keun LEE , Sang Su HAN
IPC分类号： G09G3/20
摘要： A display device includes a processor which supplies grayscale data in active periods of frame periods and stops supply of the grayscale data in blank periods of the frame periods, a timing controller which generates a change signal when a difference between a first blank period of a first frame period and a second blank period of a second frame period is greater than a threshold value, a power supply which supplies a first power voltage having a voltage level changed based on the change signal to a first power line, and pixels commonly connected to the first power line.

2. 发明申请

US20200265788A1 DISPLAY DEVICE AND METHOD OF DRIVING THE SAME 审中-公开
公开(公告)号：US20200265788A1
公开(公告)日：2020-08-20
申请号：US16731674
申请日：2019-12-31
申请人： SAMSUNG DISPLAY CO., LTD.
发明人： Kyun Ho KIM , Sung In KANG , Ki Hyun PYUN
IPC分类号： G09G3/3291 , G09G3/20
摘要： A display device includes: a display panel including a plurality of pixels; a first correction circuit configured to perform, using a gamma correction value, a gamma correction for first image data; a second correction circuit configured to receive the gamma-corrected first image, and to generate second image data by performing gray-scale compensation for the gamma-corrected first image data; and a data driver configured to provide a data signal corresponding to the second image data to the plurality of pixels, wherein the second correction circuit performs the gray-scale compensation based on the gamma correction value and a threshold value measured for each of the plurality of pixels.

3. 发明公开

US20230146329A1 DISPLAY DEVICE AND DRIVING METHOD THEREOF 审中-公开
公开(公告)号：US20230146329A1
公开(公告)日：2023-05-11
申请号：US18148772
申请日：2022-12-30
申请人： SAMSUNG DISPLAY CO., LTD.
发明人： Sang Su HAN , Kyun Ho KIM , Seong Jun KIM , Jung Taek KIM , Hyung Keun PARK , Joon Suk BAIK , Se Keun LEE
IPC分类号： G09G3/20
CPC分类号： G09G3/2092 , G09G2310/027 , G09G2310/0278
摘要： A display device, includes: a scan driver configured to sequentially supply scan signals having a turn-on level to the first scan line and the second scan line during a first period and to concurrently supply scan signals having a turn-on level to the first scan line and the second scan line during a second period after the first period, wherein: a mask period corresponds to a difference between a start point of the second period and a start point of the first period in a next frame period, a first frame period and a second frame period have different mask periods, a third frame period between the first frame period and the second frame period has a same mask period as the first frame period, and a fourth frame period between the first frame period and the second frame period has a same mask period as the second frame period.

4. 发明申请

US20210201781A1 DISPLAY DEVICE AND DRIVING METHOD THEREOF 有权
公开(公告)号：US20210201781A1
公开(公告)日：2021-07-01
申请号：US17065418
申请日：2020-10-07
申请人： Samsung Display Co., Ltd.
发明人： Kyun Ho KIM , Yong-Jin SHIN , Seong Jun KIM , Jung-Taek KIM , Joon Suk BAIK , Se Keun LEE , Uk Jae JANG , Sang Su HAN
IPC分类号： G09G3/3233 , G09G3/3275
摘要： A display device includes: a net power control circuit configured to analyze a screen load from an input image signal to generate a load signal including a load value corresponding to the screen load; and an overcurrent protection circuit configured to set a set current value at a predetermined ratio with respect to a global current value corresponding to the load value included in the load signal, and to determine whether or not the display device is powered off based on the set current value.

5. 发明申请

US20210099083A1 POWER VOLTAGE GENERATOR AND DISPLAY DEVICE HAVING THE SAME 有权
公开(公告)号：US20210099083A1
公开(公告)日：2021-04-01
申请号：US16871157
申请日：2020-05-11
申请人： Samsung Display Co., Ltd.
发明人： Kyun Ho KIM , Jung-taek KIM , Joon Suk BAIK , Sang Su HAN , Jae Woo RYU , Myung Ho LEE
IPC分类号： H02M3/156 , H03F3/14
摘要： A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.

6. 发明申请

US20170032758A1 GAMMA REFERENCE VOLTAGE GENERATOR AND DISPLAY DEVICE HAVING THE SAME 审中-公开
标题翻译：游标参考电压发生器和具有该电压发生器的显示装置
公开(公告)号：US20170032758A1
公开(公告)日：2017-02-02
申请号：US15158542
申请日：2016-05-18
申请人： Samsung Display Co., Ltd.
发明人： Min Ho PARK , Kyun Ho KIM , Sung In KANG , Yang Uk NAM , Yoon Sik PARK
IPC分类号： G09G3/36 , G09G3/20
CPC分类号： G09G3/3688 , G09G3/2003 , G09G3/3696 , G09G2300/0426 , G09G2310/0291 , G09G2310/08 , G09G2320/0276 , G09G2320/0673
摘要： A gamma reference voltage generator includes first and second resistors between a base voltage source and an input node, a third resistor coupled to a first node between the first resistor and the second resistor, a first transistor coupled to the input node and coupled to a first output node, a fourth resistor coupled between the first transistor and the input node, an operational amplifier coupled to the first node and coupled to a second terminal of the third resistor, a second transistor coupled to the first transistor, coupled to the second terminal of the third resistor and a second output node, and coupled to an output terminal of the operational amplifier, a fifth resistor and a first capacitor coupled in parallel between the second output node and the base voltage source, and a plurality of resistors coupled between the first output node and the second output node.
摘要翻译：伽马参考电压发生器包括在基极电压源和输入节点之间的第一和第二电阻器，耦合到第一电阻器和第二电阻器之间的第一节点的第三电阻器，耦合到输入节点并耦合到第一电阻器输出节点，耦合在第一晶体管和输入节点之间的第四电阻器，耦合到第一节点并耦合到第三电阻器的第二端子的运算放大器，耦合到第一晶体管的第二晶体管，耦合到第一晶体管的第二端子第三电阻器和第二输出节点，并且耦合到运算放大器的输出端子，并联在第二输出节点和基极电压源之间的第五电阻器和第一电容器，以及耦合在第一和第二电阻器之间的多个电阻器输出节点和第二输出节点。

7. 发明公开

US20230142908A1 DISPLAY DEVICE AND METHOD OF DRIVING THE SAME 审中-公开
公开(公告)号：US20230142908A1
公开(公告)日：2023-05-11
申请号：US18151142
申请日：2023-01-06
申请人： SAMSUNG DISPLAY CO., LTD.
发明人： Jung Taek KIM , Kyun Ho KIM , Jae Woo RYU , Joon Suk BAIK , Se Keun LEE , Sang Su HAN
IPC分类号： G09G3/32
CPC分类号： G09G3/32 , G09G2310/08 , G09G2310/061 , G09G2300/0842 , G09G2310/027 , G09G2320/0247 , G09G2320/0233
摘要： A display device includes a processor which supplies grayscale data in active periods of frame periods and stops supply of the grayscale data in blank periods of the frame periods, a timing controller which generates a change signal when a difference between a first blank period of a first frame period and a second blank period of a second frame period is greater than a threshold value, a power supply which supplies a first power voltage having a voltage level changed based on the change signal to a first power line, and pixels commonly connected to the first power line.

8. 发明申请

US20210272505A1 DISPLAY DEVICE 有权
公开(公告)号：US20210272505A1
公开(公告)日：2021-09-02
申请号：US17037089
申请日：2020-09-29
申请人： Samsung Display Co., Ltd.
发明人： Jung Taek KIM , Sang Su HAN , Kyun Ho KIM , Hyung Keun PARK , Joon Suk BAIK , Se Keun LEE
IPC分类号： G09G3/20
摘要： A display device includes: a plurality of pixel blocks each including a plurality of pixels; a scan driver supplying a scan signal to the scan lines and to supply a control signal to the control lines; a data driver supplying an image data voltage or a low grayscale data voltage to the data lines; and a power supply supplying a reference voltage to the pixels, wherein the pixels are configured to receive the image data voltage during a first scan period of a frame, and to receive the low grayscale data voltage during a second scan period of the frame, and the reference voltage supplied to a first pixel row of at least one of the pixel blocks in the first scan period is different from the reference voltage supplied to a last pixel row of at least one of the pixel blocks in the first scan period.

9. 发明申请

US20200273428A1 DISPLAY DEVICE 审中-公开
公开(公告)号：US20200273428A1
公开(公告)日：2020-08-27
申请号：US16662540
申请日：2019-10-24
申请人： Samsung Display Co., Ltd.
发明人： Kyun Ho KIM , Sung In KANG
IPC分类号： G09G5/10
摘要： A display device includes: a display including a gate line, a data line, and a pixel electrically coupled to the gate line and the data line; a controller configured to calculate a load of input data; a data driver configured to: generate a data signal corresponding to a grayscale value in the input data; and provide the data signal to the data line; a gate driver configured to: generate a gate signal having a pulse, based on a gate-on voltage; and provide the gate signal to the gate line; and a power supply configured to: provide the gate-on voltage to the gate driver; and vary the gate-on voltage based on the load, wherein the gate-on voltage has a voltage level for turning on the first transistor, and wherein a luminance of the display is increased as the load is increased.

10. 发明申请

US20150373798A1 BACKLIGHT UNIT 有权
标题翻译：背光单元
公开(公告)号：US20150373798A1
公开(公告)日：2015-12-24
申请号：US14667460
申请日：2015-03-24
申请人： Samsung Display Co., Ltd.
发明人： Kyun Ho KIM , Sung In KANG , Woo Jin LEE
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , H05B33/0851 , H05B33/0887 , Y02B20/347
摘要： A backlight unit includes: a light source configured to emit light based on a driving current; a sensing resistor configured to generate a sensing voltage based on the driving current; a first comparator configured to compare the sensing voltage to a first reference voltage divided from a reference power to thereby produce a first comparison signal; a first switching element controlled by the first comparison signal applied from the first comparator to thereby switch the sensing voltage; a second comparator configured to compare the sensing voltage applied via the first switching element to a first ramp signal to thereby produce a second comparison signal; a current control switching element configured to control an amount of the driving current based on the reference power and a current control signal applied from a current controller; an abnormality detector configured to convert the second comparison signal applied from the second comparator into a DC voltage and to compare the DC voltage to a critical voltage to thereby generate a third comparison signal; and a cut-off controller configured to compare the third comparison signal applied from the abnormality detector to a cut-off voltage to control the reference power based on the comparison result.
摘要翻译：背光单元包括：被配置为基于驱动电流发光的光源; 感测电阻器，被配置为基于所述驱动电流产生感测电压; 第一比较器，被配置为将感测电压与从参考功率分开的第一参考电压进行比较，从而产生第一比较信号; 由所述第一比较信号施加的第一比较信号控制的第一开关元件，从而切换感测电压; 第二比较器，被配置为将经由所述第一开关元件施加的感测电压与第一斜坡信号进行比较，从而产生第二比较信号; 电流控制开关元件，被配置为基于所述参考功率和从电流控制器施加的电流控制信号来控制所述驱动电流的量; 异常检测器，被配置为将从第二比较器施加的第二比较信号转换为直流电压，并将直流电压与临界电压进行比较，从而生成第三比较信号; 以及截止控制器，被配置为将从异常检测器施加的第三比较信号与截止电压进行比较，以基于比较结果来控制参考功率。

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