Samsung patents display driver that swaps buffers if one fails
Samsung describes a display driving unit that uses two separate buffers to send signals to the screen's gate lines. Comparison circuits constantly check the output of each buffer against the other to detect if one is malfunctioning.
In the filing’s own words
A display driving unit includes a first gate driving buffer configured to supply a first gate signal to a gate line of a display panel, a second gate driving buffer configured to supply a second gate signal to the gate line, a first comparison circuit configured to generate a signal for controlling at least one of the first gate driving buffer and the second gate driving buffer based on an output signal of the second gate driving buffer, and a second comparison circuit configured to generate a signal for controlling at least one of the first gate driving buffer and the second gate driving buffer based on an output signal of the first gate driving buffer.
What exactly they claim (claim 1)
1. A display driving unit comprising: a first gate driving buffer configured to supply a first gate signal to a gate line of a display panel; a second gate driving buffer configured to supply a second gate signal to the gate line; a first comparison circuit configured to generate a first signal for controlling at least one of the first gate driving buffer and the second gate driving buffer based on an output signal of the second gate driving buffer when a comparison of the output signal of the second gate driving buffer and a first reference signal from the first gate driving buffer indicates that the second gate driving buffer is in an abnormal state; and a second comparison circuit configured to generate a second signal for controlling at least one of the first gate driving buffer and the second gate driving buffer based on an output signal of the first gate driving buffer when a comparison of the output signal of the first gate driving buffer and a second reference signal from the second gate driving buffer indicates that the first gate driving buffer is in an abnormal state.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- Unit for driving a display, operating method thereof, and display device
- Patent number
- US12770540B2
- Application number
- 19188129
- Filed
- Apr 24, 2025
- Granted
- Oct 20, 2026
- Inventors
- 4
- Claims
- 20
Classified under
G09G 3/006 Physics & computingG09G 3/3266 Physics & computingG09G 3/32 Physics & computingG09G 2310/0289 Physics & computingG09G 2330/08 Physics & computingG09G 2330/12 Physics & computingMore from Samsung in Chips & hardware
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.