Driving method of display device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorHajime Kimura
Life of this patent
Estimating the term…
Abstract
In a display device for displaying gray scales by dividing one frame into a plurality of subframes and using a time gray scale method, pseudo contour is generated. In the case where high-order bits are displayed, gray scales are displayed by sequentially adding the weight (light-emitting period, the frequency of light emission, and the like) of each subframe. Similarly, in the case where low-order bits are displayed, gray scales are displayed by sequentially adding the weight (light-emitting period, the frequency of light emission, and the like) of each subframe. The subframes for the high-order bits and the subframes for the low-order bits are arranged so as not to be concentrated at one portion in one frame.
Claims10
A driving method of a display device for displaying gray scales comprising:
- dividing one frame into a plurality of subframes for high-order bits and at least one of subframes for low-order bits;
- performing approximately equally weighting with respect to light emissions of the plurality of subframes for the high-order bits;
- and
- performing approximately equally weighting with respect to light emissions of said at least one of subframes for the low-order bits,
- wherein a first light is emitted in one of the plurality of subframes for the high-order bits,
- wherein a second light is emitted in one of said at least one of subframes for the low-order bits after emitting the first light, and
- wherein a third light is emitted in another one of the plurality of subframes for the high-order bits after emitting the second light.
A driving method of a display device for displaying gray scales comprising:
- dividing one frame into a plurality of subframes for a high-order bits and a plurality of subframes for a low-order bits;
- performing approximately equally weighting with respect to light emissions of the plurality of subframes for the high-order bits;
- and
- performing approximately equally weighting with respect to light emissions of the plurality of subframes for the low-order bits,
- wherein a first light is emitted in one of the plurality of subframes for the low-order bits,
- wherein a second light is emitted in one of the plurality of subframes for the high-order bits after emitting the first light, and
- wherein a third light is emitted in another one of the plurality of subframes for the low-order bits after emitting the second light.
A driving method of a display device for displaying gray scales comprising:
- dividing one frame into a plurality of subframes for a high-order bits and a plurality of subframes for a low-order bits;
- performing approximately equally weighting with respect to light emissions of the plurality of subframes for the high-order bits;
- and
- performing approximately equally weighting with respect to light emissions of the plurality of subframes for the low-order bits,
- wherein a first light is emitted in one of the plurality of subframes for the low-order bits,
- wherein a second light is emitted in at least two of the plurality of subframes for the high-order bits after emitting the first light, and
- wherein a third light is emitted in another one of the plurality of subframes for the low-order bits.
A driving method of a display device for displaying gray scales comprising:
- dividing one frame into a plurality of subframes for a high-order bits and a plurality of subframes for a low-order bits;
- performing approximately equally weighting with respect to light emissions of the plurality of subframes for the high-order bits;
- and
- performing approximately equally weighting with respect to light emissions of the plurality of subframes for the low-order bits,
- wherein a first light is emitted in one of the plurality of subframes for the high-order bits,
- wherein a second light is emitted in at least two of the plurality of subframes for the low-order bits after emitting the first light, and
- wherein a third light is emitted in another one of the plurality of subframes for the high-order bits after emitting the second light.
A driving method of a display device for displaying gray scales comprising:
- dividing one frame into a plurality of subframes for a high-order bits and a plurality of subframes for a low-order bits;
- performing approximately equally weighting with respect tolight emissions of a plurality of subframes for the high-order bits;
- and
- performing approximately equally weighting with respect to light emissions of the plurality of subframes for the low-order bits,
- wherein at least oneof the plurality of subframes for the high-order bits or the low-order bits, which has a smaller number of bits are provided between subframes selected from the plurality of subframes for the high-order bits or the low-order bit, which has a larger number of bits.
Dependencies are inferred from the claim text.