-
公开(公告)号：US11270618B2
公开(公告)日：2022-03-08
申请号：US17316483
申请日：2021-05-10
发明人： Hyunseuk Yoo , Ji-Eun Park , Hye-Sang Park , Seokha Hong
摘要： A test apparatus includes: a compensation coefficient calculator configured to calculate a main compensation coefficient for a main gradation and a sub compensation coefficient for a sub gradation based on a detected image signal; a primary predictor configured to determine a representative value of each of a plurality of blocks of a display panel based on the detected image signal, and output a prediction compensation coefficient for the sub gradation based on the main compensation coefficient and the representative value corresponding to each of the plurality of blocks; a secondary predictor configured to determine a flag based on the sub compensation coefficient and the prediction compensation coefficient; and a controller configured to output the main compensation coefficient, the representative value, and the flag stored in a memory as compensation data.
-
公开(公告)号：US10861360B2
公开(公告)日：2020-12-08
申请号：US16058225
申请日：2018-08-08
发明人： Jaehoon Lee , Kyoungho Lim , Seokha Hong
摘要： A display device includes a pixel column including first to n-th pixels connected to a same data line and different gate lines from each other, a data driving chip which outputs a test data voltage in a test mode and outputs image data voltages in a normal mode, a sensing circuit which is electrically connected to the data line and the data driving chip in the test mode, senses a current output to the first pixel during a first period, and senses a current output to an i-th pixel during a second period, and a signal controller which compares a reference charge amount calculated based on the current sensed during the first period to a first charge amount calculated based on the current sensed during the second period and compensates for a level of an image data voltage applied to the i-th pixel among the image data voltages based on the compared result.
-
公开(公告)号：US20190057631A1
公开(公告)日：2019-02-21
申请号：US16058225
申请日：2018-08-08
发明人： Jaehoon Lee , Kyoungho Lim , Seokha Hong
摘要： A display device includes a pixel column including first to n-th pixels connected to a same data line and different gate lines from each other, a data driving chip which outputs a test data voltage in a test mode and outputs image data voltages in a normal mode, a sensing circuit which is electrically connected to the data line and the data driving chip in the test mode, senses a current output to the first pixel during a first period, and senses a current output to an i-th pixel during a second period, and a signal controller which compares a reference charge amount calculated based on the current sensed during the first period to a first charge amount calculated based on the current sensed during the second period and compensates for a level of an image data voltage applied to the i-th pixel among the image data voltages based on the compared result.
-
公开(公告)号：US09778528B2
公开(公告)日：2017-10-03
申请号：US14640954
申请日：2015-03-06
发明人： Sang-Uk Lim , Sunhwa Lee , Ji-Sun Kim , Kwang-chul Jung , Seokha Hong
IPC分类号： H01L27/12 , G02F1/1362 , G02F1/1343 , G09G3/36
CPC分类号： G02F1/136286 , G02F1/134336 , G09G3/3611 , G09G3/3614 , G09G2300/0426 , G09G2300/0452 , G09G2310/067 , G09G2320/0209 , H01L27/124
摘要： A display apparatus includes gate lines configured to receive gate signals, data lines arranged to cross the gate lines and configured to receive data voltages, and pixels grouped into first pixel groups and second pixel groups and connected to the gate lines and the data lines. The gate signals are configured to be applied to the gate lines in a predetermined order while skipping at least one gate line without being sequentially and consecutively applied to two gate lines adjacent to each other among the gate lines.
-
公开(公告)号：US12125451B2
公开(公告)日：2024-10-22
申请号：US18143829
申请日：2023-05-05
发明人： Seokha Hong , Jong-Woong Park
IPC分类号： G09G3/36 , G09G3/3291
CPC分类号： G09G3/3607 , G09G3/3291 , G09G2320/0666 , G09G2360/147
摘要： A method of compensating for degradation of a display device includes: determining a reference region including a part of a first display region and a second display region having pixel structures from each other; determining first stress data of first pixels based on a first average luminance value of the first pixels disposed on the part of the first display region; determining second stress data of second pixels based on a second average luminance value of the second pixels disposed on a central region of the second display region; determining third stress data of third pixels based on a third average luminance value of the third pixels disposed on an outer region of the second display region; compensating for degradation of the second pixels based on the first and second stress data, and compensating for degradation of the third pixels based on the first and third stress data.
-
公开(公告)号：US12002395B2
公开(公告)日：2024-06-04
申请号：US17494792
申请日：2021-10-05
发明人： Seokha Hong
IPC分类号： G09G3/20 , G06F3/14 , G09G3/3233
CPC分类号： G09G3/20 , G06F3/1446 , G06F3/1423 , G09G3/3233 , G09G2300/026 , G09G2300/043 , G09G2310/0272 , G09G2330/021
摘要： A display apparatus includes a plurality of display panels, a current sensor, a driving controller and a data driver. The current sensor is configured to sense a current of each of the display panels. The driving controller is configured to generate a compensation value of each of the display panels based on the current of each of the display panels and to generate a data signal of each of the display panels based on the compensation value. The data driver is configured to convert the data signal into a data voltage and to output the data voltage to each of the display panels.
-
公开(公告)号：US11574568B2
公开(公告)日：2023-02-07
申请号：US17537734
申请日：2021-11-30
发明人： Seokha Hong , Joon-Chul Goh
IPC分类号： G09G3/00
摘要： A display apparatus includes a display panel, a driving controller and a data driver. The driving controller is configured to predict a panel temperature according to a position in the display panel based on input image data, to calculate a block current of a display block of the display panel and a panel resistance according to the position in the display panel based on the panel temperature, to calculate a voltage drop according to the position in the display panel based on the block current and the panel resistance and to compensate the input image data based on the voltage drop to generate a data signal. The data driver is configured to convert the data signal to a data voltage and to output the data voltage to the display panel.
-
公开(公告)号：US11386832B1
公开(公告)日：2022-07-12
申请号：US17470518
申请日：2021-09-09
发明人： Hyunseuk Yoo , Bonghyun You , Kyung-Woo Kim , Seokha Hong
摘要： A tiled display device includes a plurality of display panels coupled to each other, where each of the plurality of display panels includes an edge region adjacent to a boundary line between the plurality of display panels, and a panel driver which multiplies input gray levels of input image data for the plurality of display panels by an adaptive gain, generates boundary compensated image data by adding boundary compensation gray levels to the input gray levels multiplied by the adaptive gain for the edge region, and drives the plurality of display panels based on the boundary compensated image data. The adaptive gain is gradually decreased over a plurality of frame periods in a case where a sum of each of the input gray levels for the edge region and a corresponding one of the boundary compensation gray levels exceeds a maximum gray level.
-
9.发明申请公开(公告)号：US20220076607A1
公开(公告)日：2022-03-10
申请号：US17326979
申请日：2021-05-21
发明人： Kyung-Woo Kim , Dongjoon Kwag , Hyunseuk Yoo , Seokha Hong
摘要： A method of generating information to control display of images providing a display device with align pattern data to which box data having a maximum reference gray level is added, obtaining a first capture image generated based on the align pattern data to which the box data is added, providing the display device with one or more full pattern data respectively having one or more reference gray levels lower than the maximum reference gray level, and obtaining one or more second capture images generated based on the one or more full pattern data. The method also includes generating compensation data including compensation values at the one or more reference gray levels and the maximum reference gray level. The compensation data may be generated based on the one or more second capture images and a portion of the first capture image corresponding to the box data.
-
公开(公告)号：US10157586B2
公开(公告)日：2018-12-18
申请号：US15401369
申请日：2017-01-09
发明人： Jai-Hyun Koh , Jaehoon Lee , Dong-Won Park , Mun-San Park , Bonghyun You , Seokha Hong
摘要： A display panel driving apparatus includes a data driving part, a comparing part, a data signal controlling part, and a gate driving part. The data driving part generates a dummy data signal in response to dummy image data, outputs the dummy data signal to a dummy data line of a display panel, generates a data signal in response to image data, and outputs the data signal to a data line of the display panel. The comparing part outputs a comparison signal in response to the dummy data signal and a delayed dummy data signal generated due to a load of the dummy data line. The comparison signal indicates how much the delayed dummy data signal is delayed with respect to the dummy data signal. The data signal controlling part controls the data signal using the comparison signal.
-
-
-
-
-
-
-
-
-
搜索结果
39 条记录 (耗时 0.027 秒)
