Display device and liquid crystal display device for adjusting transparency and polarity
AssigneeJapan Display Inc.
InventorHirofumi Kato
Life of this patent
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Abstract
According to one embodiment, a display device includes a display panel including a display area where first drive areas and second drive areas are alternately disposed, and display function layers which include first display function layers and second display function layers and which are changed to a transparent state and a scattering state, and a control unit. The control unit applies a drive voltage to the first display function layers, in a first field period. The control unit applies the drive voltage to the second display function layers, in a second field period. A polarity of the drive voltage in the first field period is different from a polarity of the drive voltage in the second field period.
Claims14
A display device, comprising:
- a display panel including a plurality of pixels each including a common electrode, a pixel electrode, and a pixel switch for writing a pixel signal in the pixel electrode;
- and
- a control circuit that drives the display panel in a first sub-frame period and a second sub-frame period subsequent to the first sub-frame period, wherein the first sub-frame period includes a first polarity in which a first voltage is applied to the common electrode and a second polarity in which a second voltage is applied to the common electrode, the second sub-frame period also includes the first polarity in which the first voltage is applied to the common electrode and the second polarity in which the second voltage is applied to the common electrode, and the first voltage is higher than the second voltage,
- wherein
- the control circuit drives the pixel switch for writing to the pixel electrode in the first polarity in the first sub-frame period and writing to the pixel electrode in the first polarity in the second sub-frame period, and further does not write to the pixel electrode in both the second polarity in the first sub-frame and the second polarity in the second sub-frame, or
- the control circuit drives the pixel switch for writing to the pixel electrode in the second polarity in the first sub-frame period and writing to the pixel electrode in the second polarity in the second sub-frame period, and further does not write to the pixel electrode in both the first polarity in the first sub-frame and the first polarity in the second sub-frame.
Dependencies are inferred from the claim text.