Display device and method for driving the same
First Claim
1. A display device comprising:
- a display; and
a display controller for dividing a first frame period into a plurality of subframe periods that one of lighting and non-lighting is set to each of the subframe periods and expressing gradation in accordance with a total lighting time during the first frame period, and for setting to one of one-lighting and one-non-lighting during a second frame period.
1 Assignment
0 Petitions
Accused Products
Abstract
In a display device using a time gradation method, power consumption at a time when multigradation display is unnecessary is reduced. In a second display mode in which the number of gradations is set to two as compared with a first display mode of multigradation, writing of a digital video signal of a lower order bit into a memory is eliminated by a memory controller of a signal control circuit included in the display device. In addition, readout of the digital video signal of the lower order bit from the memory is eliminated. The amount of information of a digital video signal inputted to a source signal line drive circuit is reduced. In accordance with such operation, a display controller sets a display period for conducting display to be long. When the gradation is reduced, a frame period can be also set to be longer than the first display mode.
97 Citations
26 Claims
-
1. A display device comprising:
-
a display; and
a display controller for dividing a first frame period into a plurality of subframe periods that one of lighting and non-lighting is set to each of the subframe periods and expressing gradation in accordance with a total lighting time during the first frame period, and for setting to one of one-lighting and one-non-lighting during a second frame period. - View Dependent Claims (3, 5, 7, 9, 11, 23)
-
-
2. A display device comprising:
-
a display; and
a display controller for dividing a first frame period into a plurality of subframe periods that one of lighting and non-lighting is set to each of the subframe periods and expressing gradation in accordance with a total lighting time during the first frame period, and for setting to one of one-lighting and one-non-lighting during a second frame period, wherein the second frame period is longer than the first frame period. - View Dependent Claims (4, 6, 8, 10, 12, 24)
-
-
13. A method of driving a display device including a display and a display controller, comprising:
-
dividing a first frame period into a plurality of subframe periods that one of lighting and non-lighting is set to each of the subframe periods and expressing gradation in accordance with a total lighting time during the first frame period; and
setting to one of one-lighting and one-non-lighting during a second frame period. - View Dependent Claims (15, 17, 19, 21, 25)
-
-
14. A method of driving a display device including a display and a display controller, comprising:
-
dividing a first frame period into a plurality of subframe periods that one of lighting and non-lighting is set to each of the subframe periods and expressing gradation in accordance with a total lighting time during the first frame period; and
setting to one of one-lighting and one-non-lighting during a second frame period, wherein the second frame period is longer than the first frame period. - View Dependent Claims (16, 18, 20, 22, 26)
-
Specification