Method for manufacturing light emitting device comprising reflective film
AssigneeSemiconductor Energy Laboratory Co., Ltd., a Japan corporation
InventorsTakeshi Fukunaga, Junya Maruyama
Life of this patent
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Abstract
To provide a bright and highly reliable light-emitting device. An anode (102), an EL layer (103), a cathode (104), and an auxiliary electrode (105) are formed sequentially in lamination on a reflecting electrode (101). Further, the anode (102), the cathode (104), and the auxiliary electrode (105) are either transparent or semi-transparent with respect to visible radiation. In such a structure, lights generated in the EL layer (103) are almost all irradiated to the side of the cathode (104), whereby an effect light emitting area of a pixel is drastically enhanced.
Claims47
1-28. (canceled)
A television comprising a display portion, the display portion comprising:
- a pixel portion over a substrate, the pixel portion comprising:
- an EL element;
- and
- an inverted stagger type thin film transistor comprising an active layer comprising amorphous silicon,
- an external driving circuit comprising an IC chip for driving the pixel portion.
A television comprising a display portion, the display portion comprising:
- a pixel portion over a substrate, the pixel portion comprising:
- an EL element;
- and
- an inverted stagger type amorphous silicon thin film transistor,
- an external driver circuit comprising an IC chip for driving the pixel portion.
A television comprising a display portion, the display portion comprising:
- an inverted stagger type thin film transistor comprising an active layer comprising amorphous silicon over a substrate;
- a pixel electrode above and electrically connected to the inverted stagger type thin film transistor;
- an anode over the pixel electrode;
- a light-emitting layer over the anode;
- and
- a cathode over the light-emitting layer.
A television comprising a display portion, the display portion comprising:
- an inverted stagger type amorphous silicon thin film transistor;
- a pixel electrode above and electrically connected to the inverted stagger type thin film transistor;
- an anode over the pixel electrode;
- a light-emitting layer over the anode;
- and
- a cathode over the light-emitting layer.
A navigation system comprising a display portion, the display portion comprising:
- a pixel portion over a substrate, the pixel portion comprising:
- an EL element;
- and
- an inverted stagger type thin film transistor comprising an active layer comprising amorphous silicon,
- an external driving circuit comprising an IC chip for driving the pixel portion.
A navigation system comprising a display portion, the display portion comprising:
- a pixel portion over a substrate, the pixel portion comprising:
- an EL element;
- and
- an inverted stagger type amorphous silicon thin film transistor,
- an external driver circuit comprising an IC chip for driving the pixel portion.
A navigation system comprising a display portion, the display portion comprising:
- an inverted stagger type thin film transistor comprising an active layer comprising amorphous silicon over a substrate;
- a pixel electrode above and electrically connected to the inverted stagger type thin film transistor;
- an anode over the pixel electrode;
- a light-emitting layer over the anode;
- and
- a cathode over the light-emitting layer.
A navigation system comprising a display portion, the display portion comprising:
- an inverted stagger type amorphous silicon thin film transistor;
- a pixel electrode above and electrically connected to the inverted stagger type thin film transistor;
- an anode over the pixel electrode;
- a light-emitting layer over the anode;
- and
- a cathode over the light-emitting layer.
An audio playback device comprising a display portion, the display portion comprising:
- a pixel portion over a substrate, the pixel portion comprising:
- an EL element;
- and
- an inverted stagger type thin film transistor comprising an active layer comprising amorphous silicon,
- an external driving circuit comprising an IC chip for driving the pixel portion.
An audio playback device comprising a display portion, the display portion comprising:
- a pixel portion over a substrate, the pixel portion comprising:
- an EL element;
- and
- an inverted stagger type amorphous silicon thin film transistor,
- an external driver circuit comprising an IC chip for driving the pixel portion.
An audio playback device comprising a display portion, the display portion comprising:
- an inverted stagger type thin film transistor comprising an active layer comprising amorphous silicon over a substrate;
- a pixel electrode above and electrically connected to the inverted stagger type thin film transistor;
- an anode over the pixel electrode;
- a light-emitting layer over the anode;
- and
- a cathode over the light-emitting layer.
An audio playback device comprising a display portion, the display portion comprising:
- an inverted stagger type amorphous silicon thin film transistor;
- a pixel electrode above and electrically connected to the inverted stagger type thin film transistor;
- an anode over the pixel electrode;
- a light-emitting layer over the anode;
- and
- a cathode over the light-emitting layer.
A portable information terminal comprising a display portion, the display portion comprising:
- a pixel portion over a substrate, the pixel portion comprising:
- an EL element;
- and
- an inverted stagger type thin film transistor comprising an active layer comprising amorphous silicon,
- an external driving circuit comprising an IC chip for driving the pixel portion.
A portable information terminal comprising a display portion, the display portion comprising:
- a pixel portion over a substrate, the pixel portion comprising:
- an EL element;
- and
- an inverted stagger type amorphous silicon thin film transistor,
- an external driver circuit comprising an IC chip for driving the pixel portion.
A portable information terminal comprising a display portion, the display portion comprising:
- an inverted stagger type thin film transistor comprising an active layer comprising amorphous silicon over a substrate;
- a pixel electrode above and electrically connected to the inverted stagger type thin film transistor;
- an anode over the pixel electrode;
- a light-emitting layer over the anode;
- and
- a cathode over the light-emitting layer.
A portable information terminal comprising a display portion, the display portion comprising:
- an inverted stagger type amorphous silicon thin film transistor;
- a pixel electrode above and electrically connected to the inverted stagger type thin film transistor;
- an anode over the pixel electrode;
- a light-emitting layer over the anode;
- and
- a cathode over the light-emitting layer.
An image playback device comprising a display portion, the display portion comprising:
- a pixel portion over a substrate, the pixel portion comprising:
- an EL element;
- and
- an inverted stagger type thin film transistor comprising an active layer comprising amorphous silicon,
- an external driving circuit comprising an IC chip for driving the pixel portion.
An image playback device comprising a display portion, the display portion comprising:
- a pixel portion over a substrate, the pixel portion comprising:
- an EL element;
- and
- an inverted stagger type amorphous silicon thin film transistor,
- an external driver circuit comprising an IC chip for driving the pixel portion.
An image playback device comprising a display portion, the display portion comprising:
- an inverted stagger type thin film transistor comprising an active layer comprising amorphous silicon over a substrate;
- a pixel electrode above and electrically connected to the inverted stagger type thin film transistor;
- an anode over the pixel electrode;
- a light-emitting layer over the anode;
- and
- a cathode over the light-emitting layer.
An image playback device comprising a display portion, the display portion comprising:
- an inverted stagger type amorphous silicon thin film transistor;
- a pixel electrode above and electrically connected to the inverted stagger type thin film transistor;
- an anode over the pixel electrode;
- a light-emitting layer over the anode;
- and
- a cathode over the light-emitting layer.
Dependencies are inferred from the claim text.