-
公开(公告)号：US12027094B2
公开(公告)日：2024-07-02
申请号：US17115838
申请日：2020-12-09
发明人： Sooyeon Kim , Hee-Jeong Seo , Jiye Lee , Taegon Im , Junghwan Cho
IPC分类号： G09G3/3275 , G09G3/20
CPC分类号： G09G3/2092 , G09G2310/027 , G09G2310/0275
摘要： Provided is a data driver including a digital to analog converter configured to convert image signal data into a plurality of data voltages, and an output buffer unit including a plurality of channels for outputting the plurality of data voltages. The output buffer unit includes a plurality of output blocks. Each output block includes one or more channels. Data voltages outputted from a first output block among the plurality of output blocks are delayed with a first time difference. Data voltages outputted from a second output block among the plurality of output blocks are delayed with a second time difference which is different from the first time difference.
-
公开(公告)号：US10909897B2
公开(公告)日：2021-02-02
申请号：US16556080
申请日：2019-08-29
发明人： Jae-Han Lee , Sooyeon Kim , Taegon Im , Jung Hwan Cho
摘要： A gate driving circuit includes a shift register configured to generate a plurality of output signals based on at least one clock signal, a plurality of output buffers configured to generate a plurality of gate signals by amplifying the output signals and to sequentially output the gate signals to a plurality of gate lines in a display panel, a detector configured to sequentially sense the gate signals and to compare each of the gate signals to a reference voltage, and a dummy output buffer configured to be coupled between the shift register and a gate line of the gate lines instead of an output buffer of the output buffers when a voltage level of a corresponding gate signal from the output buffers is less than a voltage level of the reference voltage.
-
公开(公告)号：US09763292B2
公开(公告)日：2017-09-12
申请号：US14841464
申请日：2015-08-31
发明人： Wonhyoung Kang , Mingyu Kim , Taegon Im , Songyi Han , Jintaek Hong
CPC分类号： H05B33/0815 , G09G3/3406 , G09G3/3426 , H05B33/0845 , H05B33/0851 , H05B33/089 , H05B37/0245 , H05B37/0263 , H05B37/029 , H05B37/032
摘要： A backlight unit includes: a light source configured to emit light based on a driving current; and a backlight controller receiving a digital dimming signal that defines a length of an output period of the driving current from a pulse width modulator and configured to, when a duty ratio of the driving current is less than a reference duty ratio, modulates the duty ratio of the driving current so that the duty ratio of the driving current is equal to or greater than the reference duty ratio and decrease a duty ratio of the digital dimming signal.
-
4.发明授权Backlight unit with over-current detection and display device having the same 有权具有过流检测和显示装置的背光单元具有相同的功能公开(公告)号：US09418623B2
公开(公告)日：2016-08-16
申请号：US13928582
申请日：2013-06-27
发明人： Taegon Im , Myoung-Soo Kim , Hwanwoong Lee , Min-Soo Choi , Eun Chul Shin , Dae-Sik Lee
CPC分类号： G09G5/10 , G09G3/3406 , H05B33/0827
摘要： A backlight unit includes a power converter configured to generate a light source driving voltage in response to a voltage control signal, a plurality of light emitting diode strings, where each of the light emitting diode strings receives the light source driving voltage through a first terminal thereof, a plurality of transistors corresponding to the light emitting diode strings, where each of the transistors includes: a first electrode connected to a second terminal of a corresponding light emitting diode string thereof; a second electrode; and a control electrode, and a controller connected to the control electrode and the second electrode, where the controller outputs a plurality of current control signals to control electrodes of the transistors and generate the voltage control signal, where the controller generates an over-current detection signal when any one of the current control signals has a pulse width less than a predetermined reference width.
摘要翻译： 背光单元包括功率转换器，其被配置为响应于电压控制信号产生光源驱动电压，多个发光二极管串，其中每个发光二极管串通过其第一端子接收光源驱动电压 ，对应于发光二极管串的多个晶体管，其中每个晶体管包括：连接到其相应的发光二极管串的第二端子的第一电极; 第二电极; 以及控制电极，连接到控制电极和第二电极的控制器，其中控制器将多个电流控制信号输出到晶体管的控制电极并产生电压控制信号，其中控制器产生过电流检测 当任何一个电流控制信号具有小于预定参考宽度的脉冲宽度时的信号。
-
5.发明授权公开(公告)号：US11386819B2
公开(公告)日：2022-07-12
申请号：US16894075
申请日：2020-06-05
发明人： Taegon Im , Sooyeon Kim , JiYe Lee , Hee-Jeong Seo , Junghwan Cho
IPC分类号： G09G3/00 , G09G3/3225 , G06F1/16
摘要： A display device includes a display panel including first and second panel pads electrically connected to each other, a connection board including first and second connection board pads connected to the first and second panel pads, respectively, an output pad, and a driving circuit. The driving circuit includes a pull-up resistor connected between a first voltage terminal and a first node, and a comparator configured to compare a voltage at the first node with a reference voltage and to output a contact test signal corresponding to a comparison result to the output pad. The first connection board pad is electrically connected to the first node, and the second connection board pad is connected to a second voltage terminal.
-
公开(公告)号：US20190333465A1
公开(公告)日：2019-10-31
申请号：US16383004
申请日：2019-04-12
发明人： Taegon Im , Jae-Han Lee
IPC分类号： G09G3/36
摘要： A display device includes a signal controller configured to provide data and a frame control signal, a display panel including first to m-th data line groups, and a data driver configured to receive the data and the frame control signal, and output a data signal corresponding to the data to the first to m-th data line groups. The data driver includes first to m-th data driving circuit units electrically connected to the first to m-th data line groups in one-to-one correspondence, Each of the first to m-th data driving circuit units includes a clock adjustment unit configured to generate a second clock signal using a first clock signal and the frame control signal. The second clock signal controls an output timing of the data signal to be transmitted to a first channel among a plurality of channels of each of the first to m-th data line groups.
-
公开(公告)号：US10152925B2
公开(公告)日：2018-12-11
申请号：US14850773
申请日：2015-09-10
发明人： Taegon Im , Min-Soo Choi , Min-Gyu Kim , Youngsup Kwon , Eun Chul Shin , Dae-Sik Lee
摘要： A backlight unit includes a light source part including a light-emitting diode array, a DC/DC converter, a driving current controller, and a reference voltage variable part. The backlight unit is operated in a first mode or a second mode. The driving current controller controls a driving current flowing through the light-emitting diode array to have a first current level during the first mode and controls the driving current flowing through the light-emitting diode array to have a second current level during the second mode. The reference voltage variable part applies a first reference voltage to the driving current controller during the first mode and applies a second reference voltage to the driving current controller during the second mode.
-
公开(公告)号：US09288854B2
公开(公告)日：2016-03-15
申请号：US13904367
申请日：2013-05-29
发明人： Min-Soo Choi , Kyunho Kim , Eun Chul Shin , Hwanwoong Lee , Taegon Im
CPC分类号： H05B33/0815 , H05B33/0827 , Y02B20/347
摘要： In a display device, a backlight unit including a power converter configured to generate a light source driving voltage in response to a voltage control signal, a plurality of light emitting diode strings each configured to receive the light source driving voltage through an end thereof, and a controller connected to the other end of each of the plurality of light emitting diode strings and configured to generate a plurality of current control signals used to control a current flowing through each of the plurality of light emitting diode strings and the voltage control signal. The controller is configured to generate the voltage control signal in response to a current control signal from among the plurality of current control signals, which is applied to a light emitting diode string configured to receive a lowest forward driving voltage among the plurality of light emitting diode strings.
摘要翻译： 在显示装置中，包括被配置为响应于电压控制信号产生光源驱动电压的功率转换器的背光单元，多个发光二极管串，每个被配置为通过其端部接收光源驱动电压;以及 连接到所述多个发光二极管串中的每一个的另一端并被配置为产生用于控制流过所述多个发光二极管串中的每一个的电流和所述电压控制信号的多个电流控制信号的控制器。 控制器被配置为响应于来自多个电流控制信号的电流控制信号而产生电压控制信号，该电流控制信号被施加到被配置为在多个发光二极管中接收最低正向驱动电压的发光二极管串 字符串。
-
公开(公告)号：US11482183B2
公开(公告)日：2022-10-25
申请号：US17307550
申请日：2021-05-04
发明人： Boyeon Kim , Wontae Kim , Taegon Im
IPC分类号： G09G3/36
摘要： A display device may include a data driver that outputs a previous data voltage and a current data voltage, respectively, at an output terminal, to be applied to a pixel of a display panel in respective time intervals. A switch is controlled to open and close a circuit path between the output terminal and a data line coupled to the pixel. A capacitor stores an overdriving voltage. At least one further switch selectively applies the overdriving voltage to the data line from the capacitor when the circuit path is open and thereby enables a rapid transition of a voltage level of the data line between the previous and current data voltages, when the current and previous data voltages are to differ by more than a predetermined amount. As an example, the rapid transition between the previous and current data voltages may serve to minimize a color mixture phenomenon between pixels connected to a common data line and representing different colors.
-
公开(公告)号：US10909906B2
公开(公告)日：2021-02-02
申请号：US16707402
申请日：2019-12-09
发明人： Wontae Kim , Taegon Im
摘要： A display device according to an embodiment of the inventive concept includes a data driving unit, a gate driving unit, a signal control unit for controlling driving of the data driving unit and the gate driving unit, and a display panel. The data driving unit generates an internal clock signal for outputting data voltages corresponding to image data, and the display panel displays an image corresponding to the data voltages in response to a gate driving signal outputted from the gate driving unit. The data driving unit includes a filtering unit for converting a first frequency control signal received from the signal control unit so as to generate a second frequency control signal, and a clock training unit for training a clock signal received from the signal control unit so as to generate the internal clock signal in response to the second frequency control signal.
-
-
-
-
-
-
-
-
-
搜索结果
25 条记录 (耗时 0.018 秒)
