Stretchable display device
A stretchable display device is disclosed, which is able to be operated with three states of a non-stretched state, a transition state and a stretched state, and the stretchable display device includes a stretchable substrate and a plurality of light emitting units. The plurality of the light emitting units are disposed on the stretchable substrate, and the plurality of the light emitting units are in a mode of ON or in a mode of OFF. The light emitting units being in the mode of ON are in a number of N 1 while in the non-stretched state, the light emitting units being in the mode of ON are in a number of N 2 while in the transition state, and the light emitting units being in the mode of ON are in a number of N 3 while in the stretched state, wherein N 3 ≥N 2 >N 1.
1. A stretchable display device, which is able to be operated with three states of a non-stretched state, a transition state and a stretched state, wherein the non-stretched state is a state that the stretchable display device is not stretched, the stretched state is a state after the stretchable display device is stretched, and the transition state is a state between the non-stretched state and the stretched state during a stretching process of the stretchable display device, the stretchable display device comprising:
a stretchable substrate; and
a plurality of light emitting units disposed on the stretchable substrate, wherein the plurality of the light emitting units can be in a mode of ON or in a mode of OFF,
the light emitting units being in the mode of ON in a number of N 1 while in the non-stretched state,
the light emitting units being in the mode of ON in a number of N 2 while in the transition state, and
the light emitting units being in the mode of ON in a number of N 3 while in the stretched state;
wherein N 3 ≥N 2 >N 1 .
2. The stretchable display device of claim 1 , having a PPA_ 1 that is defined as a number of the plurality of the light emitting units being in the mode of ON per unit area of the stretchable substrate while in the non-stretched state, and a PPA_ 2 that is defined as a number of the plurality of the light emitting units being in the mode of ON per unit area of the stretchable substrate while in the stretched state, wherein the PPA_ 2 is equal to the PPA_ 1 .
3. The stretchable display device of claim 1 , wherein all of the plurality of the light emitting units are in the mode of ON while in the stretched state.
4. The stretchable display device of claim 1 , wherein only a portion of the plurality of the light emitting units are in the mode of ON while in the stretched state.
5. A stretchable display device, which is able to be operated with three states of a non-stretched state, a transition state and a stretched state, wherein the non-stretched state is a state that the stretchable display device is not stretched, the stretched state is a state after the stretchable display device is stretched, and the transition state is a state between the non-stretched state and the stretched state during a stretching process of the stretchable display device, the stretchable display device comprising:
a stretchable substrate; and
a plurality of light emitting units disposed on the stretchable substrate, wherein the plurality of the light emitting units can be in a mode of ON or in a mode of OFF,
the light emitting units being in the mode of ON in a number of N 1 while in the non-stretched state,
the light emitting units being in the mode of ON in a number of N 2 while in the transition state, and
the light emitting units being in the mode of ON in a number of N 3 while in the stretched state;
wherein N 3 ≥N 2 >N 1 , and
wherein the stretchable display device has a PPA_ 1 that is defined as a number of the plurality of the light emitting units being in the mode of ON per unit area of the stretchable substrate while in the non-stretched state, and a PPA_ 2 that is defined as a number of the plurality of the light emitting units being in the mode of ON per unit area of the stretchable substrate while in the stretched state, wherein 1.5×PPA_ 1 ≥PPA_ 2 ≥0.5×PPA_ 1 .
6. The stretchable display device of claim 5 , wherein the PPA_ 2 is equal to the PPA_ 1 .
7. The stretchable display device of claim 5 , wherein all of the plurality of the light emitting units are in the mode of ON while in the stretched state.
8. The stretchable display device of claim 5 , wherein only a portion of the plurality of the light emitting units are in the mode of ON while in the stretched state.