Display device, driving method thereof, and electronic apparatus
View Patent ↗It is characterized in that the image signal selecting the light-emission/no light-emission of the first to third light-emitting elements 112 to 114 formed by lamination is input through only the transistor for switching 107 , and the specific light-emission is selectively emitted by controlling the potential of the first to third current supply lines 103 to 105.
1. A display device comprising:
a pixel comprising:
first to (n+1)th pixel electrodes;
first to n-th light-emitting layers that emit different emission colors; and
first to n-th transistors for driving;
first to n-th current supply lines; and
a power line;
wherein:
the first to n-th light-emitting layers and the first to (n+1)th pixel electrodes are laminated,
the m-th light emitting layer is interposed between the m-th pixel electrode and the (m+1) pixel electrode,
the m-th pixel electrode is electrically connected to the m-th current supply line via the m-th transistor for driving,
the (n+1)th pixel electrode is electrically connected to the power line,
the potential difference between the pixel electrodes sandwiching the m-th light-emitting element is sequentially adjusted so that the m-th light-emitting element selectively emits light,
n is a natural number, 2≦n, and
m is a natural number, 1≦m≦n.
2. The display device according to claim 1 ,
wherein the second to n-th pixel electrodes all comprise a transparent substance.
3. The display device according to claim 1 ,
wherein the display device is one selected from the group consisting of an EL display, a video camera, a personal computer, a portable information terminal, a mobile telephone, and a digital camera.
4. A display device comprising:
a pixel comprising:
first to (n+1)th pixel electrodes;
first to n-th light-emitting layers that emit different emission colors;
a transistor for switching; and
first to n-th transistors for driving;
a source signal line;
a gate signal line;
first to n-th current supply lines; and
a power line;
wherein:
the first to n-th light-emitting layers and the first to (n+1)th pixel electrodes are laminated,
the m-th light emitting layer is interposed between the m-th pixel electrode and the (m+1)th pixel electrode,
a gate electrode of the transistor for switching is electrically connected to the gate signal line,
a first electrode of the transistor for switching is electrically connected to the source signal line,
a second electrode of the transistor for switching is electrically connected to gate electrodes of the first to n-th transistors for driving,
the m-th pixel electrode is electrically connected to the m-th current supply line via the m-th transistor for driving,
the (n+1)th pixel electrode is electrically connected to the power line,
the potential difference between the pixel electrodes sandwiching the m-th light-emitting element is sequentially adjusted so that the m-th light-emitting element selectively emits light,
n is a natural number, 2≦n, and
m is a natural number, 1≦m≦n.
5. The display device according to claim 4 , further comprising:
a gate signal line for erasure;
wherein:
the pixel further comprises a transistor for erasure,
the gate electrode of the transistor for erasure is electrically connected to the signal line for erasure,
the first electrode of the transistor for erasure is electrically connected to the gate electrodes of the first to n-th transistors for driving, and
the second electrode of the transistor for erasure is electrically connected to any one of the first to n-th current supply lines.
6. The display device according to claim 5 ,
wherein the second to n-th pixel electrodes all comprise a transparent substance.
7. The display device according to claim 4 , further comprising:
a gate signal line for erasure; and
a retention volume line;
wherein:
the pixel further comprises a transistor for erasure,
the gate electrode of the transistor for erasure is electrically connected to the gate signal line for erasure,
the first electrodes of the transistor for erasure is electrically connected to the gate electrodes of the first to n-th transistors for driving, and
a second electrode of the transistor for erasure is electrically connected to the retention volume line.
8. The display device according to claim 7 ,
wherein the second to n-th pixel electrodes all comprise a transparent substance.
9. The display device according to claim 4 , further comprising:
a gate signal line for erasure;
wherein:
the pixel further comprises first to n-th transistors for erasure,
the gate electrodes of the first to n-th transistors for erasure are electrically connected to the gate signal line for erasure, and
the first to n-th transistors for erasure are disposed between the first to n-th pixel electrodes and the first to n-th transistors for driving.
10. The display device according to claim 9 ,
wherein the second to n-th pixel electrodes all comprise a transparent substance.
11. The display device according to claim 4 ,
wherein the second to n-th pixel electrodes all comprise a transparent substance.
12. The display device according to claim 4 ,
wherein the display device is one selected from the group consisting of an EL display, a video camera, a personal computer, a portable information terminal, a mobile telephone, and a digital camera.