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US 12,183,265 B2Granted
Display device
AssigneeJapan Display Inc.
InventorsKazunari Tomizawa, Kazuhiko Sako, Tsutomu Harada
Life of this patent
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Abstract
A display device includes a plurality of light-emitting elements, and a control circuit configured to control drive of the light-emitting elements. The control circuit divides one frame period into a plurality of subframe periods having different lengths and controls light emission and non-emission of the light-emitting elements for each of the subframe periods.
Claims20
A display device comprising:
- a plurality of light-emitting elements;
- and
- a control circuit configured to control drive of the light-emitting elements, wherein
- the control circuit divides one frame period into a plurality of subframe periods having different lengths and controls light emission and non-emission of the light-emitting elements for each of the subframe periods,
- the control circuit has, as a system for driving the light-emitting elements, a first display drive system that supplies a fixed high level current to at least one first light-emitting element that emits light among the light-emitting elements and changes a length of a first light emission period in which the first light-emitting element emits light, and
- the control circuit has a second display drive system that supplies one low level current selected from a plurality of low level currents each having a current value smaller than a current value of the high level current and set to different current values to at least one second light-emitting element that emits light among the light-emitting elements and changes a length of a second light emission period in which the second light-emitting element emits light.
3 more elements
A display device comprising:
- a pixel including a light-emitting element, a transistor coupled to the light- emitting element;
- and
- a signal line coupled to a gate electrode of the transistor, wherein
- a first voltage, a second voltage lower than the first voltage, and a third voltage lower than the second voltage are configured to be applied to the signal line,
- one frame period includes a plurality of subframe periods,
- the subframe periods have at least one first subframe period in which the light-emitting element emits light and at least one second subframe period in which the light-emitting element does not emit light,
- the display device has a first display mode and a second display mode,
- in the first display mode, the first voltage is supplied to the signal line and the transistor is turned on in the at least one first subframe period, and the transistor is turned off in the at least one second subframe period,
- in the second display mode, a low voltage lower than the first voltage is applied to the signal line and the transistor is turned on in the at least one first subframe period, and the transistor is turned off in the at least one second subframe period,
- the second display mode includes a case where the low voltage is the second voltage and a case where the low voltage is the third voltage, and
- the subframe periods have a third subframe period with a first length and a fourth subframe period with a second length different from the first length.
8 more elements
Dependencies are inferred from the claim text.