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公开(公告)号：US11886289B2
公开(公告)日：2024-01-30
申请号：US17942616
申请日：2022-09-12
Applicant: Samsung Display Co., Ltd.
Inventor： Sang Kuk Kim
CPC classification number: G06F11/1048 , G06F11/1044 , G11C11/5642
Abstract: A display device includes an external memory device which stores a first integrated circuit (“IC”) driving information, an internal memory device which stores a second IC driving information generated by copying the first IC driving information, a buffer which receives the second IC driving information and detects an electrostatic discharge current, an error correction code calculator which determines a first error correction code of the first IC driving information and a second error correction code of the second IC driving information when the electrostatic discharge current is detected, and an error correction code comparator which compares the first error correction code and the second error correction code. The internal memory device selectively updates the second IC driving information to the first IC driving information based on a result of a comparison of the first error correction code and the second error correction code.
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公开(公告)号：US10818222B2
公开(公告)日：2020-10-27
申请号：US16595110
申请日：2019-10-07
Applicant: Samsung Display Co., Ltd.
Inventor： Jeong Doo Lee , Sang Kuk Kim , Young Mook Choi
IPC: G09G3/32
Abstract: An embodiment of a display device includes first, second, and third pixels including first, second, and third transistors, a first light-emitting stage to apply a first light-emitting signal including a first pulse at a turn-off level to a gate electrode of the first transistor, a second light-emitting stage to apply a second light-emitting signal including a second pulse at a turn-off level to a gate electrode of the second transistor, and a third light-emitting stage to apply a third light-emitting signal including a third pulse at a turn-off level to a gate electrode of the third transistor, wherein an interval between generation times of the first and second pulses is the same as an interval between generation times of the second and third pulses, and an interval between extinction times of the first and second pulses is different from an interval between extinction times of the second and third pulses.
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Patent Agency Ranking
公开(公告)号：US10593269B2
公开(公告)日：2020-03-17
申请号：US15879337
申请日：2018-01-24
Inventor： Sang Kuk Kim , Moonsang Hwang , Weonjun Choe , Tai-Ji An , Seung-Hoon Lee , Won-Kang Kim , Jun-Sang Park
IPC: G09G3/36 , G09G3/3275
Abstract: A data driver includes a ramp signal generator generating a first ramp signal and a second ramp signal, a counter generating a count signal based on a clock signal, and channels each generating a data signal based on the first ramp signal, the second ramp signal, and the count signal. Each channel includes a latch circuit dividing the image data into a first partial data and a second partial data and latching the first and the second partial data, a duplication driver generating first and second reference signals by duplicating the first and second ramp signals, a digital-analog converter generating a driving signal corresponding to a first partial data based on the first and second reference signals, and an output circuit sampling the driving signal by comparing the second partial data with the count signal to output the data signal.
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公开(公告)号：US12020625B2
公开(公告)日：2024-06-25
申请号：US17747427
申请日：2022-05-18
Applicant: Samsung Display Co., Ltd.
Inventor： Sang Kuk Kim
IPC: G09G3/20
CPC classification number: G09G3/2092 , G09G2330/02 , G09G2330/04 , G09G2330/08
Abstract: A display apparatus includes: a first power line, a second power line, an IC region, a printed circuit board region, and a display panel. The IC region includes a logic block receiving a first power voltage from the first power line, an analog block receiving a second power voltage from the second power line, a first IC ground connected to the logic block, and a second IC ground connected to the analog block. The printed circuit board region includes a printed circuit board ground connected to the first IC ground and the second IC ground, a transient voltage suppressor diode including a first electrode connected to the second power line and a second electrode connected to the printed circuit board ground, and a board switch performing a switching operation between the printed circuit board ground and the first IC ground. The display panel is connected to the IC region.
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公开(公告)号：US11557240B2
公开(公告)日：2023-01-17
申请号：US17583924
申请日：2022-01-25
Applicant: Samsung Display Co., Ltd.
Inventor： Sang Kuk Kim
IPC: G09G3/20
Abstract: A driving controller includes an oscillator and a signal generator. The oscillator is configured to generate an oscillation signal based on an input current. The signal generator is configured to generate a gate driving signal and a data driving signal based on the oscillation signal. The oscillator is configured to maintain a frequency of one horizontal period of the oscillation signal to be constant when an oscillation fundamental frequency is shifted. When the oscillation fundamental frequency is f0 and a fundamental constant is N0, the frequency of one horizontal period is f0/N0.
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公开(公告)号：US11816006B2
公开(公告)日：2023-11-14
申请号：US17740225
申请日：2022-05-09
Applicant: Samsung Display Co., Ltd.
Inventor： Sang Kuk Kim
CPC classification number: G06F11/162 , G06F11/0772 , G06F11/1004 , G06F11/327
Abstract: A display device includes: a first memory storing compensation data and a display driver integrated chip including a compensator converting the input image data into output image data based on the compensation data. The display driver integrated chip includes: a second memory receiving the compensation data from the first memory when the display device is power-on; a third memory included in the compensator, the third memory storing the compensation data received from the second memory; and an error detector detecting an error in the compensation data stored in the third memory by comparing the compensation data stored in the first memory with the compensation data stored in the third memory.
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公开(公告)号：US11756488B2
公开(公告)日：2023-09-12
申请号：US17401829
申请日：2021-08-13
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Sang Kuk Kim , Deok Jun Choi , Ji Hyun Kim
IPC: G06F3/038 , G09G3/3275
CPC classification number: G09G3/3275 , G09G2310/0243 , G09G2310/08 , G09G2320/02 , G09G2370/00
Abstract: A display device includes an oscillator which generates a reference clock signal having a frequency corresponding to frequency information provided from an external device, a register which stores a signal parameter for the reference clock signal, and the signal parameter indicates the number of pulses of the reference clock signal included in one horizontal time, a data driver which applies data signals to data lines connected to pixels based on the one horizontal time, and a controller which changes the signal parameter based on a change in the frequency of the reference clock signal in a way such that the one horizontal time is maintained substantially constant.
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