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US 10,380,939 B2Granted
Display device and electronic apparatus
AssigneeSony Corporation
InventorTetsuo Minami
Life of this patent
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Abstract
A display unit includes sub-pixels that each have a light emitting element, a capacitor, a first transistor that writes a video signal potential to the capacitor, and a second transistor that provides a drive current to the light emitting element based on a voltage stored in the capacitor. Each first transistor has a channel width W and channel length L, such that a width to length ratio is W/L. The width to length ratio W1/L1 of one of the first transistors is different than a width-to-length ratio W2/L2 of at least one other of the first transistors.
Claims7
A display device comprising:
- a plurality of pixels, respective ones of the plurality of pixels including four sub-pixels consisting of an R sub-pixel, a G sub-pixel, a B sub-pixel, and a W sub-pixel, respective ones of the four sub-pixels including a light emitting element, a capacitor, a first transistor configured to provide a potential to the capacitor, and a second transistor configured to provide a drive current to the light emitting element based on a voltage stored in the capacitor;
- a plurality of a first lines respectively extending along a first direction and configured to propagate a control voltage, the plurality of first lines respectively connected to control terminals of the first transistors of the four sub-pixels;
- a plurality of second lines respectively extending along a second direction perpendicular to the first direction,
- wherein the first transistors of the four sub-pixels are dimensioned such that either:
- a channel length of the first transistor of a first sub-pixel of the four sub-pixels and the first transistor of a second sub-pixel of the four sub-pixels is greater than a channel length the first transistor of a third sub-pixel of the four sub-pixels and the first transistor of a fourth sub-pixel of the four sub-pixels, or
- a channel width of the first transistor of the first sub-pixel and the first transistor of the second sub-pixel is greater than a channel width of the first transistor of the third sub-pixel and the first transistor of the fourth sub-pixel.
3 more elements
Dependencies are inferred from the claim text.