Light-emitting device and driving method of light-emitting device
AssigneeJapan Display Inc.
InventorKazunari TOMIZAWA
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Abstract
A driving method of a light emitting device includes that the light emitting device has a plurality of pixels and performs gray-scale display in sections of the sub-frame periods in which one frame period for displaying one frame image is divided into a plurality of sub-frame periods. The driving method includes writing analog gray-scale data to the plurality of pixels to display analog gray-scales in one sub-frame period of the plurality of sub-frame periods, and writing first digital gray-scale data to the plurality of pixels to display first digital gray-scales in a sub-frame period of the same length as the one sub-frame period, and in a sub-frame period different from the one sub-frame period.
Claims19
A driving method of a light emitting device,
- the light emitting device comprising:
- a plurality of pixels;
- dividing a frame period for displaying an image of one frame into a plurality of sub-frame periods;
- and
- displaying gray-scales in each of the plurality of sub-frame periods;
- the driving method comprising:
- writing analog gray-scale data to the plurality of pixels to display analog gray-scales in one sub-frame period of the plurality of sub-frame periods;
- and
- writing first digital gray-scale data to the plurality of pixels to display first digital gray-scales in a sub-frame period of the same length as the one sub-frame period, and in a sub-frame period different from the one sub-frame period.
The driving method according to claim 1, further comprising:
- displaying the first digital gray-scales after erasing the analog gray-scale data;
- and
- erasing the first digital gray-scale data written to the plurality of pixels in the sub-frame period of the same length as the one sub-frame period after displaying the first digital gray-scales. The driving method according to claim 5, further comprising:
- writing second digital gray-scale data to the plurality of pixels to display second digital gray-scales in a sub-frame period twice as long as the one sub-frame period after erasing the first digital gray-scales.
A light emitting device comprising:
- a plurality of pixels each provided with a light emitting element;
- a frame memory for storing analog gray-scale data and first digital gray-scale data;
- and
- a control section writing the analog gray-scale data to any one pixel of the plurality of pixels upon receiving an input of the analog gray-scale data from the frame memory, and writing the first digital gray-scale data to any one pixel upon receiving an input of the first digital gray-scale data from the frame memory;
- wherein
- the control section divides a frame period for displaying an image of one frame into a plurality of sub-frame periods,
- one of the plurality of sub-frame periods is the period of a displaying an analog gray-scale in which the plurality of pixels is written with the analog gray-scale data by the control section, and
- a sub-frame period different from the one sub-frame period is a period of the same length period as the one sub-frame period and is the period of a displaying the first digital gray-scales in which the plurality of pixels is written with the first digital gray-scale data by the control section.
Dependencies are inferred from the claim text.