Light element array with controllable current sources and method of operation
AssigneeKoninklijke Philips Electronics N.V.
InventorsMatthias Wendt, Harald Josef Gunther Radermacher
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AssigneeKoninklijke Philips Electronics N.V.
InventorsMatthias Wendt, Harald Josef Gunther Radermacher
Estimating the term…
A light element array (100) including first (LEE1), second (LEE2) and third light emitting elements (LEE3), and first (140) and second (150) current sources. The first light emitting is characterized by a first operating voltage VOpi at or above which it is substantially operable to emit light. The second light emitting element includes a first terminal (120a), and a second terminal (120b) coupled to the second terminal of the first light emitting element, the second light emitting element characterized by a second operating voltage Vop2. The third light emitting element includes a first terminal (130a) coupled to the first terminal (110a) of the first light emitting element, and a second terminal (130b), the third light emitting element characterized by a third operating voltage Voρ3. The first current source is coupled between the first terminal of the first light emitting element and the first terminal (120b) of the second light emitting element, and the second current source is coupled between the second terminal (110b) of the first light emitting element and the second terminal of the third light emitting element.
A light element array, comprising:
A method for operating an light element array, the light element array including a first light emitting element having first and second terminals, a second light emitting element having a first terminal coupled to a first power supply rail and a second terminal coupled to the second terminal of the first light element, a third light emitting element having a first terminal coupled to the first terminal of the first light emitting element and a second terminal coupled to a second power supply rail, a first current source coupled between the first terminal of the first light emitting element and the first terminal of the second light emitting element, and a second current source coupled between the second terminal of the first light emitting element and the second terminal of the third light emitting element, the method comprising:
(canceled)
Dependencies are inferred from the claim text.