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公开(公告)号：US11496687B2
公开(公告)日：2022-11-08
申请号：US17397387
申请日：2021-08-09
发明人： Seok Ha Hong , Dong Joon Kwag , Hyung Jin Kim
IPC分类号： G09G3/3291 , H04N5/235
摘要： An optical compensation device includes a measurement part that measures a luminance of a reference point of a display panel displaying an image and a luminance of a neighboring point separated from the reference point to generate measurement data, a camera that photographs a surface of the display panel to generate a photographed image, and a compensation part that generates a scaling value of the neighboring point based on the measurement data of the reference point, a photographed data generated based on the photographed image of the reference point, the measurement data of the neighboring point, and a photographed data generated based on the photographed image of the neighboring point, and generates compensation data of the neighboring point based on the scaling value of the neighboring point and the photographed data of the reference point.
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公开(公告)号：US10025414B2
公开(公告)日：2018-07-17
申请号：US14847546
申请日：2015-09-08
发明人： Dong-Won Park , Bong Hyun You , Nam-Gon Choi , Seok Ha Hong , Jung-Won Kim , Dong Gyu Lee , Jae Hyun Cho , Jae Hyung Cho
摘要： A tiled display device includes a first display device including a first display panel configured to sense a touch thereon and display an image signal, and a first controller configured to control the first display panel and transmit a reference signal wirelessly, and a second display device including a second display panel configured to sense a touch thereon and display the image signal, and a second controller configured to control the second display panel and transmit a first ACK signal to the first controller after receiving the reference signal, in which the first controller is configured to determine a first latency time of the second display device by using the reference signal and the first ACK signal and synchronize touch information of the first and second display devices according to the first latency time.
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公开(公告)号：US20140375627A1
公开(公告)日：2014-12-25
申请号：US14307120
申请日：2014-06-17
发明人： Byung Sun Kim , Dae-Gwang Jang , Seok Ha Hong
IPC分类号： G09G3/36
CPC分类号： G09G3/3677 , G09G2320/0257 , G09G2320/103 , G09G2330/021 , G09G2340/0435
摘要： A display device and driving method thereof are disclosed. In one aspect, the display device includes a display panel displaying a still image and a moving image and a signal control unit controlling signals for driving the display panel and controlling a frequency of the display panel based on a low frequency enable signal. The signal control unit controls the driving of the display panel at a low frequency when the still image is applied to the display panel and the driving of the display panel at a normal driving frequency after a first time elapses. The signal control unit further controls the driving of the display panel at a low frequency after a second time elapses.
摘要翻译： 公开了一种显示装置及其驱动方法。 一方面，显示装置包括显示静止图像的显示面板和运动图像，以及信号控制单元，控制用于驱动显示面板的信号，并且基于低频使能信号来控制显示面板的频率。 信号控制单元在静止图像被施加到显示面板之后以低频率驱动显示面板的驱动，并且在第一次经过之后以正常的驱动频率驱动显示面板。 信号控制单元进一步在第二时间之后以低频控制显示面板的驱动。
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公开(公告)号：US11315525B1
公开(公告)日：2022-04-26
申请号：US17319833
申请日：2021-05-13
发明人： Seok Ha Hong , Dong Joon Kwag
摘要： A method for compensating luminance of a display device according to some embodiments of the present disclosure includes capturing an image of the display device, generating imaging data, primarily mapping display pixels of the display device and the imaging data so that a unit mapping area corresponding to the display pixels includes luminance values for image pixels of an imaging device, setting an offset value of the imaging data with respect to the display pixels so that a maximum luminance value among the luminance values is positioned at a center of the unit mapping area, secondarily mapping the imaging data according to the offset value with respect to the display pixels, calculating a representative luminance value, and setting a luminance correction value corresponding to the representative luminance value with respect to one of the display pixels.
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公开(公告)号：US20220084459A1
公开(公告)日：2022-03-17
申请号：US17394966
申请日：2021-08-05
发明人： Dong Joon KWAG , Hyung Jin KIM , Seok Ha Hong
摘要： A method of generating compensation data in a display device includes setting a pixel group including a first target pixel and first non-target pixels adjacent to the first target pixel among a plurality of pixels of a display panel; switching on the first target pixel and switching off the first non-target pixels to generate a first captured image and store the first captured image; switching on the first target pixel and the first non-target pixels to generate a second captured image and store the second captured image; switching off the first target pixel and switching on the first non-target pixels to generate a third captured image and store the third captured image; and calculating luminance correction data of the first target pixel based on the stored first to third captured images.
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公开(公告)号：US09972237B2
公开(公告)日：2018-05-15
申请号：US15075835
申请日：2016-03-21
发明人： Seok Ha Hong , Dae-Gwang Jang , Byung Sun Kim , Sang Mi Kim , Ung Gyu Min , Hyun Sik Hwang , Gi Geun Kim , Kyoung Won Lee
CPC分类号： G09G3/2092 , G09G3/2003 , G09G3/3648 , G09G3/3696 , G09G2310/04 , G09G2320/0247 , G09G2320/103 , G09G2340/0435
摘要： A controller controls the driving frequency and voltages for a display device. If image data corresponds to a moving picture, the controller drives a data driver and a gate driver at a moving picture frequency. If image data corresponds to a still image, drives the data driver and the gate driver at a still image frequency lower frequency than the moving picture frequency. When the still image is to be displayed, the signal controller also controls leakage current of a thin film transistor of a pixel based on a representative value of the image data, such that positive leakage current applied for a positive data voltage is equal to negative leakage current applied for a negative data voltage.
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公开(公告)号：US09030452B2
公开(公告)日：2015-05-12
申请号：US14023334
申请日：2013-09-10
发明人： Dae-Gwang Jang , Seok Ha Hong , Joon-Chul Goh , Byung Sun Kim , Sang Mi Kim , Ji Myoung Seo
CPC分类号： G09G3/3655 , G09G3/3614 , G09G2310/06 , G09G2320/0204
摘要： The described technology relates to a liquid crystal display and a driving method thereof. The liquid crystal display includes a plurality of pixels arranged in a matrix form. The pixels include a liquid crystal capacitor including a pixel electrode and a common electrode as two terminals. A plurality of data lines transfer data to the plurality of pixels. The pixels include a first pixel and a second pixel, which are adjacent to each other. First and second common signals are applied to the common electrode of the first and second pixels, respectively. The second common signal is inverted to the first common signal. The first and second common signals swing between a first voltage and a second voltage. The polarity of the data voltage transferred by a data line with respect to the first common signal or the second common signal is constant during one frame.
摘要翻译： 所描述的技术涉及液晶显示器及其驱动方法。 液晶显示器包括以矩阵形式布置的多个像素。 像素包括作为两个端子的包括像素电极和公共电极的液晶电容器。 多个数据线将数据传送到多个像素。 像素包括彼此相邻的第一像素和第二像素。 第一和第二公共信号分别施加到第一和第二像素的公共电极。 第二公共信号被反转到第一公共信号。 第一和第二公共信号在第一电压和第二电压之间摆动。 数据线相对于第一公共信号或第二公共信号传输的数据电压的极性在一帧期间是恒定的。
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公开(公告)号：US11651738B2
公开(公告)日：2023-05-16
申请号：US17367399
申请日：2021-07-04
发明人： Jae Hoon Lee , Kuk Hwan Ahn , Seok Ha Hong
IPC分类号： G09G3/3266 , G09G3/3275 , G09G3/3233
CPC分类号： G09G3/3266 , G09G3/3233 , G09G3/3275 , G09G2310/0248 , G09G2310/08 , G09G2330/08 , G09G2330/10
摘要： An nth (where n is a natural number) stage is included in a scan driver of a display. The nth stage includes: a first input circuit for controlling a voltage of a first node in response to a carry signal of a previous stage; a second input circuit for controlling the voltage of the first node in response to a carry signal of a next stage; a first control circuit for controlling a voltage of an output terminal in response to the carry signal of the next stage; an output circuit for outputting an nth scan signal and an nth carry signal in response to the voltage of the first node and a voltage of a second node; and a leakage control circuit for supplying a control voltage to the first input circuit and the second input circuit in response to one of the nth scan signal and the nth carry signal.
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公开(公告)号：US11423832B2
公开(公告)日：2022-08-23
申请号：US17394966
申请日：2021-08-05
发明人： Dong Joon Kwag , Hyung Jin Kim , Seok Ha Hong
摘要： A method of generating compensation data in a display device includes setting a pixel group including a first target pixel and first non-target pixels adjacent to the first target pixel among a plurality of pixels of a display panel; switching on the first target pixel and switching off the first non-target pixels to generate a first captured image and store the first captured image; switching on the first target pixel and the first non-target pixels to generate a second captured image and store the second captured image; switching off the first target pixel and switching on the first non-target pixels to generate a third captured image and store the third captured image; and calculating luminance correction data of the first target pixel based on the stored first to third captured images.
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公开(公告)号：US10672357B2
公开(公告)日：2020-06-02
申请号：US15801951
申请日：2017-11-02
发明人： Jae Hoon Lee , Soo-Yeon Lee , Seok Ha Hong , Bong Hyun You , Jai-Hyun Koh
IPC分类号： G09G3/36
摘要： A stage of a gate driving circuit includes: a first control transistor diode-connected between a first input end of the stage and a first node, biased by a first input signal, and back-biased by a second input signal; a second control transistor including a control end which receives a third input signal, a first end connected to the first node, and a second end connected to a first voltage, and back-biased by a fourth input signal; a first output transistor including a control end connected to the first node, a first end connected to a clock input end of the stage, and a second end connected to a first output end of the stage; and a capacitor connected between the control and second ends of the first output transistor. The second input signal and the fourth input signal have enable levels during different periods.
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