Display apparatus, driving method for display apparatus and electronic apparatus
AssigneeJoled Inc.
InventorsTetsuro Yamamoto, Katsuhide Uchino
Life of this patent
Estimating the term…
Abstract
A plurality of scanning periods are combined to form a composite period (2H). Within the first period of the front half, threshold value (Vth) correction is carried out all at once, and within the second period of the latter half, signal (Vsig) writing operation is carried out. High speed writing can be carried out even where the scanning period is shortened.
Claims13
A display apparatus, comprising:
- a pixel array section;
- and
- a driving section;
- said pixel array section including a plurality of scanning lines extending along the direction of a row, a plurality of signal lines extending along the direction of a column, and a plurality of pixels disposed in rows and columns at places at which said scanning lines and said signal lines intersect with each other;
- at least one of said pixels including a sampling transistor, a driving transistor, a storage capacitor and a light emitting element;
- said sampling transistor connected to one of said scanning lines, one of said signal lines, and said driving transistor;
- said driving transistor connected to said light emitting element;
- said storage capacitor connected to said driving transistor;
- said driving section including a write scanner for supplying control signals to said scanning lines;
- said write scanner combining scanning periods allocated individually to plural ones of said scanning lines to form a composite scanning period that consists of a first period and a second period, the composite scanning period being two horizontal periods;
- said write scanner outputting on-level control signals to said scanning lines simultaneously within the first period to execute a threshold value correction operation of said scanning lines simultaneously;
- and
- said write scanner outputting sequential on-level control signals to said scanning lines within the second period to execute a sequential signal potential writing operation,
- wherein said one of said signal lines provides a reference potential to the sampling transistor during the first period and a first signal potential and a second signal potential to the sampling transistor during the second period, the second signal potential being larger than the first signal potential and the first signal potential being larger than the reference potential.
A method for driving a display device including a pixel array section and a driving section, the pixel array section including a plurality of scanning lines extending along the direction of a row, a plurality of signal lines extending along the direction of a column, and a plurality of pixels disposed in rows and columns at places at which the scanning lines and the signal lines intersect with each other, at least one of the plurality of pixels including a sampling transistor, a driving transistor, a storage capacitor and a light emitting element, the sampling transistor connected to one of the plurality of scanning lines, one of the plurality of signal lines, and the driving transistor, the driving transistor connected to the light emitting element, the storage capacitor connected to the driving transistor, the driving section including a write scanner for supplying control signals to the plurality of scanning lines and a signal selector for switchably supplying a signal potential and a reference potential to the plurality of signal lines, the method comprising:
- outputting, by the write scanner, on-level control signals to the plurality of scanning lines simultaneously within a first period to execute a threshold value correction operation of the plurality of scanning lines simultaneously in a composite scanning period that consists of the first period and a second period, the composite scanning period being two horizontal periods and being allocated individually to plural ones of the scanning lines;
- and
- outputting, by the write scanner, sequential on-level control signals to the scanning lines within the second period to execute a sequential signal potential writing operation, and
- providing, by one of the plurality of signal lines, a reference potential to the sampling transistor during the first period and a first signal potential and a second signal potential to the sampling transistor during the second period, the second signal potential being larger than the first signal potential and the first signal potential being larger than the reference potential.
Dependencies are inferred from the claim text.