Display device
AssigneeTianma Japan, Ltd.
InventorNobuya SEKO
Life of this patent
Estimating the term…
Abstract
A display device includes a substrate; a plurality of light-emitting elements on the substrate; and a plurality of pixel circuits on the substrate, being configured to control the plurality of light-emitting elements in one-to-one correspondence. Each of the plurality of pixel circuits includes a thin film transistor. The thin film transistor includes a channel. The plurality of pixel circuits are disposed at different positions in a scanning direction of a pulse laser beam for annealing the channels. At least channels for light-emitting elements of the same color out of the channels are disposed at the same phase of irradiation cycles of the pulse laser beam in the scanning direction.
Claims13
A display device comprising:
- a substrate;
- a plurality of light-emitting elements on the substrate;
- and
- a plurality of pixel circuits on the substrate, being configured to control the plurality of light-emitting elements in one-to-one correspondence,
- wherein each of the plurality of pixel circuits includes a thin film transistor,
- wherein the thin film transistor includes a channel;
- wherein the plurality of pixel circuits are disposed at different positions in a scanning direction of a pulse laser beam for annealing the channels, and
- wherein at least channels for light-emitting elements of the same color out of the channels are disposed at the same phase of irradiation cycles of the pulse laser beam in the scanning direction.
A display device comprising:
- a substrate;
- a plurality of light-emitting elements on the substrate;
- and
- a plurality of pixel circuits on the substrate, being configured to control the plurality of light-emitting elements in one-to-one correspondence,
- wherein each of the plurality of pixel circuits includes a thin film transistor,
- wherein the thin film transistor includes a channel;
- wherein the channel is composed of sections extending in a first direction and sections extending in a second direction, an absolute value of an angle between the first direction and a scanning direction of a pulse laser beam for annealing the channel is a predetermined value, the second direction is perpendicular to the scanning direction, and the sections extending in the first direction and sections extending in the second direction are connected alternately,
- wherein at least one end of each section extending in the second direction is connected with a side extending along the first direction of an end part in the first direction of a section extending in the first direction,
- wherein, in each section extending in the second direction, a middle line extending straight in the second direction from one end to the other end is defined as first virtual line,
- wherein, at each position in the first direction of the first virtual lines, a sum of a total length of the first virtual lines and a product of a number of sections extending in the first direction that exist in the second direction and a channel width takes the same value,
- wherein, at a position in the first direction where a second virtual line extending straight in the second direction does not cross any section extending in the second direction, a product of a number of sections extending in the first direction that is crossed by the second virtual line and the channel width takes a value equal to the same value, and
- wherein a dimension in the scanning direction of the channel is an integral multiple of a scanning pitch of the pulse laser beam.
Dependencies are inferred from the claim text.