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公开(公告)号：US20220122556A1
公开(公告)日：2022-04-21
申请号：US17428178
申请日：2021-01-20
Inventor： Song MENG , Zhongyuan WU
IPC: G09G3/36 , G09G3/3208 , G09G3/20
Abstract: An image processing method, an image processing circuit and a display apparatus are provided. The image processing method includes: converting an RGB gray-scale value of each pixel in a current image frame into an RGB luminance value; converting the RGB luminance value into a first RGBW luminance value; determining a luminance level of the current image frame according to the first RGBW luminance value corresponding to each pixel; determining a luminance gain value of the current image frame according to the luminance level of the current image frame; calculating a second RGBW luminance value according to the luminance gain value and the first RGBW luminance value; and converting the second RGBW luminance value into an RGBW gray-scale value.
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公开(公告)号：US20220122529A1
公开(公告)日：2022-04-21
申请号：US17361549
申请日：2021-06-29
Inventor： Song MENG , Xuehuan FENG
IPC: G09G3/3225
Abstract: The present disclosure relates to the field of display technology, and describes a pixel driving circuit detection method, a display panel, a driving method thereof, and a display device. The detection method includes inputting a reference voltage to the data line during at least part of the initial phase; turning on the first and second switch sub-circuits during the charging phase, to input the detection voltage to the data line, while inputting the reset voltage to the sensing line; turning on the second switch sub-circuit during the charging phase, to input the driving current by the driving transistor to the sensing line under the effect of the detection voltage; turning off the first and second switch sub-circuits during the detection phase, to detect the voltage on the sensing line; and obtaining the mobility of the driving transistor according to the voltage on the sensing line detected in the detection phase.
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公开(公告)号：US20200074934A1
公开(公告)日：2020-03-05
申请号：US16387954
申请日：2019-04-18
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Fei YANG , Xiaolong WEI , Lirong WANG , Song MENG , Yi CHEN
IPC: G09G3/3275
Abstract: The present disclosure provides a source driver, a display device, and a signal transmission method, relating to the field of display technology. The source driver is configured to receive a first data signal from a timing controller, wherein the first data signal carries a control command; and transmit, under control of the control command, a reference clock signal and a sensing data signal to the timing controller simultaneously, wherein the sensing data signal is received by the timing controller under control of the reference clock signal.
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Patent Agency Ranking
44.发明申请公开(公告)号：US20200005711A1
公开(公告)日：2020-01-02
申请号：US16555538
申请日：2019-08-29
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: G09G3/3233
Abstract: A driving method for preventing image sticking of a display panel (805) upon shutdown, and a display device (800). The method includes: receiving a shutdown signal (S01, S16); and adjusting driving signals of a sub-pixel circuit (708, 810) of the display panel (805), so as to reduce the voltage difference between a gate electrode and a source electrode of a driving transistor (T1) of the sub-pixel circuit, and hence allowing the display panel (805) to enter an image sticking prevention mode (S02, S17). The method can prevent image sticking of the display panel (805) at the time of shutdown and hence improve the display quality.
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45.发明申请公开(公告)号：US20190385568A1
公开(公告)日：2019-12-19
申请号：US15771937
申请日：2017-09-20
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Danna SONG , Song MENG , Mingi CHU
IPC: G09G5/10 , G09G3/3258 , G09G3/3291
Abstract: The present disclosure discloses an electroluminescent display screen and brightness uniformity compensation method and system thereof, wherein the method comprises: performing test modeling based on a correspondence between an aging rule of an electroluminescent diode in the display screen and an aging rule of a thin film transistor (TFT) in the display screen to acquire a brightness uniformity compensation model; acquiring a first compensation parameter and a second compensation parameter required for compensating the TFT, and acquiring a current brightness ratio of the electroluminescent diode through invoking the brightness uniformity compensation model based on the compensation parameters; performing brightness uniformity compensation on the display screen based on the acquired current brightness ratio of the electroluminescent diode.
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公开(公告)号：US20180315392A1
公开(公告)日：2018-11-01
申请号：US15565907
申请日：2017-05-04
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
CPC classification number: G09G3/38 , G02F1/163 , G02F2001/1635 , G09G2300/0439 , G09G2300/0809 , G09G2300/0866 , G09G2310/0262 , G09G2310/0275
Abstract: A pixel circuit is provided which includes a data writing module, a drive module, a control module and an electrochromic device. The data writing module provides a data signal to the control terminal of the drive module under the control of a first control signal. The drive module drives the electrochromic device for colour development or colour fading according to a power supply voltage signal under the control of the data signal. The control module controls the conduction between the drive module and the electrochromic device on the basis of a second control signal, and the control module controls the conduction so that the conduction is realized later than the change in the power supply voltage signal. The pixel circuit effectively removes interference of the power supply voltage signal, avoids display fluctuations caused by the change in the power supply voltage signal, and further improves the display effect.
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公开(公告)号：US20180293016A1
公开(公告)日：2018-10-11
申请号：US15567733
申请日：2017-05-17
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Song MENG , Fei YANG , Danna SONG
IPC: G06F3/06 , G09G3/3225
Abstract: A method and apparatus for updating data in a memory for electrical compensation, the method comprises: when a master chip receives a power-off signal, writing a serial number of a block being updated or a predetermined value into a nonvolatile memory. In the apparatus, only a nonvolatile memory is required to be provided external to a master chip to store the serial number of the block (the sequence of the block) being updated currently during power-off. Upon a next power-on, it is determined that which rows have their data lost during the previous power-off according to the serial number of the block, and then data of adjacent rows is used to replace the data of the rows which have their data lost during the previous power-off; therefore, the operation is simple and the efficiency is high, so that the time for updating the data is short, without affecting the memory's lifespan
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48.发明申请公开(公告)号：US20180197472A1
公开(公告)日：2018-07-12
申请号：US15535585
申请日：2016-12-09
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: G09G3/3233
Abstract: A driving method for preventing image sticking of a display panel upon shutdown, and a display device. The method includes: receiving a shutdown signal; and adjusting driving signals of a sub-pixel circuit of the display panel, so as to reduce the voltage difference between a gate electrode and a source electrode of a driving transistor of the sub-pixel circuit, and hence allowing the display panel to enter an image sticking prevention mode. The method can prevent image sticking of the display panel at the time of shutdown and hence improve the display quality.
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