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US 10,593,278 B2Granted
Display device subpixel activation patterns
AssigneeLG Display Co., Ltd.
InventorsJongbeom Lee, Beumsik Cho, Juyun Lee
Life of this patent
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Abstract
A display device includes a data driver, a multiplexer, and a multiplexer controller. The data driver outputs a data voltage through output buffers. The multiplexer distributes each of the data voltages output by the output buffers to data lines in a time division manner in response to first to control signals. The multiplexer controller sequentially outputs control signals in a time division manner. Each control signal transitions to a gate ON voltage during a prior horizontal period and maintains the gate ON voltage for an intended horizontal period.
Claims16
A display device comprising:
- a data driver outputting a data voltage through output buffers;
- a multiplexer distributing data voltages, which are respectively output by the output buffers, to n number of data lines, in response to first to n number of control signals, n being an integer of 3 or greater;
- and
- a multiplexer controller outputting the first to n number of control signals in a time division manner, wherein a first one of the n number of control signals transitions to a gate ON voltage during a first horizontal period and maintains the gate ON voltage for a predetermined period of time after a second horizontal period starts,
- wherein each of the first and second horizontal periods includes n number of scan periods, and the data driver outputs a data voltage to be supplied to one subpixel during one of the n number of scan periods,
- wherein the multiplexer includes n number of switches which are configured to turn on in response to a respective one of the n number of control signals, the first one of the n number of control signals maintaining the gate ON voltage during a last scan period of the first horizontal period and a first scan period of the second horizontal period, and
- wherein the multiplexer controller sequentially outputs the n number of control signals during the first horizontal period, and sequentially output the n number of control signals during the second horizontal period in a reverse order to the first horizontal period,
- wherein a second one of the n number of control signals overlaps with the first one of the n number of control signals, and the second one of the n number of control signals overlaps with the third one of the n number of control signals.
5 more elements
A method, comprising:
- outputting, by a data driver, data voltages through output buffers;
- sequentially outputting, by a multiplexer controller, n number of control signals in a time division manner in a first horizontal period;
- sequentially outputting, by the multiplexer controller, the n number of control signals during a second horizontal period in a reverse order to the first horizontal period;
- receiving a first control signal of the n number of control signals at a switching device, the first control signal having a first portion and a second portion;
- receiving a second control signal of the n number of control signals at the switching device, the second control signal having a first portion and a second portion;
- receiving a third control signal of the n number of control signals at the switching device, the third control signal having a first portion and a second portion;
- illuminating a first plurality of subpixels on a display panel, the first plurality of subpixels arranged in a first position order according to color, the illuminating including:
- activating a first subpixel of the first plurality of subpixels for a first scan period of the first horizontal period based on the first portion of the first control signal;
- activating a second subpixel of the first plurality of subpixels for a second scan period of the first horizontal period based on the first portion of the second control signal, the second scan period starting after the first scan period;
- and
- activating a third subpixel of the first plurality of subpixels for a third scan period of the first horizontal period based on the first portion of the third control signal, the third scan period starting after the second scan period;
- and
- illuminating a second plurality of subpixels on the display panel, the second plurality of subpixels arranged in a second position order according to color, the illuminating including:
- activating a fourth subpixel of the second plurality of subpixels for a fourth scan period of the second horizontal period based on the second portion of the third control signal, the fourth scan period starting after the third scan period;
- activating a fifth subpixel of the second plurality of subpixels for a fifth scan period of the second horizontal period based on the second portion of the second control signal, the fifth scan period starting after the fourth scan period;
- and
- activating a sixth subpixel of the second plurality of subpixels for a sixth scan period of the second horizontal period based on the second portion of the first control signal, the sixth scan period starting after the fifth scan period,
- wherein the multiplexer includes n number of switches which are configured to turn on in response to a respective one of the first, second, and third control signals, the third control signal maintaining a gate ON voltage during the third scan period of the first horizontal period and the fourth scan period of the second horizontal period, and
- the second control signal overlaps with the first control signal and the third control signal.
16 more elements
Dependencies are inferred from the claim text.