Display apparatuses and methods of driving the same
AssigneeSamsung Electronics Co., Ltd.
InventorJung-woo Kim
Life of this patent
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Abstract
A pixel of a display apparatus includes at least a first transistor and at least a second transistor. A cell of transparent fluid including particles charged to have different polarities from each other is arranged between a pixel electrode and a common electrode. The first and second transistors are connected to the pixel electrode. The pixel is drivable according to pulse amplitude modulation (PAM) and pulse width modulation (PWM) such that a frame of an image is displayable using a single field.
Claims20
A display apparatus comprising:
- at least one pixel, each of the at least one pixels including,
- a cell configured to display an image,
- a first transistor configured to modulate a magnitude of a potential difference between ends of the cell, and
- a second transistor configured to adjust a period during which the potential difference exists between the ends of the cell by connecting a first of the ends of the cell to an equalizing electric potential to equalize an electric potential at each end of the cell in response to a received switching voltage.
A display apparatus comprising:
- at least one pixel, each of the at least one pixels including,
- a cell configured to display an image,
- a first transistor configured to modulate a magnitude of a potential difference between ends of the cell, and
- a second transistor configured to adjust a period during which the potential difference exists between the ends of the cell, wherein the at least one pixel includes a plurality of pixels, the plurality of pixels being configured to display the image using a single field and independent of a number of gray levels in the image.
A display apparatus comprising:
- at least one pixel, each of the at least one pixels including,
- a cell configured to display an image,
- a first transistor configured to modulate a magnitude of a potential difference between ends of the cell, and
- a second transistor configured to adjust a period during which the potential difference exists between the ends of the cell, wherein each of the at least one pixels further includes,
- a first electrode,
- a second electrode, and
- a capacitor,
- wherein the cell is arranged between the first and second electrodes, the first transistor is electrically connected to the second electrode, the second transistor is electrically connected to the second electrode, the capacitor is electrically connected to the second electrode, and the capacitor is configured to be charged when the first transistor is turned on, but discharged when the second transistor is turned on.
A method of driving a display apparatus including a transistor circuit having at least two transistors, the transistor circuit being configured to drive a pixel of the display apparatus by modulating an amplitude and width of at least one voltage pulse applied to the pixel, the method comprising:
- modulating a magnitude of a potential difference between ends of a cell of the pixel of the display apparatus, the cell being configured to display an image;
- and
- adjusting a period during which the potential difference exists between the ends of the cell by connecting a first of the ends of the cell to an equalizing electric potential to equalize an electric potential at each end of the cells in response to a received switching voltage.
Dependencies are inferred from the claim text.