MASKING FOR LIGHT EMITTING DEVICE PATTERNS
First Claim
Patent Images
1. A light emitting device comprising:
- a substrate comprising a first anode and a second anode separated by an isolation area;
a first active layer arranged on top of said substrate and forming a first active area that covers the first anode and extends to the isolation area;
a first electrode layer overcoating said first active area to form a first diode structure adapted to emit light of a first color, the first electrode layer being adapted to form a transparent interelectrode;
a second active layer overcoating said first diode structure so that it extends beyond said first diode structure, and forming a second active area that covers the interelectrode above the first anode and extends across the second anode; and
a second electrode layer over-coating said second active area to form a second diode structure adapted to emit light of a second color.
4 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a light emitting device with at least two active areas and a more robust method of manufacturing such a device, wherein a first electrode layer (20) is deposited through a mask overcoating an active material (10). A second active material (30) is deposited through another mask in such a way that an area which covers and extends beyond the first electrode layer (20) is overcoated with the organic material. Then, a second electrode layer (40) is coated through a mask such that it overcoats the whole second active material (30).
-
Citations
15 Claims
-
1. A light emitting device comprising:
-
a substrate comprising a first anode and a second anode separated by an isolation area; a first active layer arranged on top of said substrate and forming a first active area that covers the first anode and extends to the isolation area; a first electrode layer overcoating said first active area to form a first diode structure adapted to emit light of a first color, the first electrode layer being adapted to form a transparent interelectrode; a second active layer overcoating said first diode structure so that it extends beyond said first diode structure, and forming a second active area that covers the interelectrode above the first anode and extends across the second anode; and a second electrode layer over-coating said second active area to form a second diode structure adapted to emit light of a second color. - View Dependent Claims (2, 3, 4, 5, 8, 9, 13, 14, 15)
-
-
6. (canceled)
-
7. (canceled)
-
10. A method of manufacturing a light emitting device, said method comprising:
-
providing a substrate; providing said substrate with a first anode and a second anode separated by an isolation area; depositing a first organic layer forming a first active area on top of said substrate covering said first anode and extending to said isolation area by using a first masking process; depositing a first electrode layer overcoating said first active area by using a second masking process to form a first diode structure adapted to emit light of a first color, the first electrode layer being adapted to form a transparent interelectrode; depositing a second organic layer forming a second active area to cover the interelectrode above said first anode and to extend across said second anode, and overcoating said first diode structure so that it extends beyond said first diode structure by using a third masking process; and depositing a second electrode layer over-coating said second active area to form a second diode structure adapted to emit light of a second color by using a fourth masking process. - View Dependent Claims (11)
-
-
12. (canceled)
Specification