IP Library Granted Patent US 9,918,368
Granted Patent B2
US 9,918,368 · App. 15/387,553 · Granted Mar 13, 2018

Lighting device, lighting arrangement comprising lighting device and method for operating a lighting device

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Quick Facts
Patent No.
US 9,918,368
App. No.
15/387,553
Granted
Mar 13, 2018
Kind
B2
Abstract

A lighting device comprising a plurality of components ( 2 ) provided for generating radiation, a plurality of row lines (Z 1 , Z 2 ) and a plurality of column lines (S 1 , S 2 , . . . , S 5 ) is specified, wherein the components are in each case electrically conductively connected to a row line and to a column line and the lighting device is provided for the simultaneous operation of at least two components. A lighting arrangement comprising such a lighting device and a method for operating a lighting device are furthermore specified.

Claims (20)

1. A lighting arrangement comprising:

a lighting device comprising:

a plurality of components provided for generating radiation;

a plurality of row lines and a plurality of column lines, wherein the components are in each case electrically conductively connected to a row line and to a column line and the lighting device is provided for the simultaneous operation of at least two components; and

a tristate circuit via which the row lines are switchable between a high state and a high-impedance state; and

a drive circuit,

wherein the column lines are in each case connected to a current driver,

wherein the column lines are operable with a high voltage state, a low voltage state and an intermediate voltage state, and

wherein a voltage difference between a voltage representing the high voltage state and a voltage representing the intermediate voltage state does not cause a component, to which the voltage difference is applied, to emit radiation.

2. The lighting arrangement according to claim 1 , wherein an ESD protection element is assigned to at least one component.

3. The lighting arrangement according to claim 2 , wherein the ESD protection element has a unidirectional blocking behavior.

4. The lighting arrangement according to claim 1 , wherein a common ESD protection element is in each case assigned to the components which are electrically conductively connected to a row line, and/or to the components which are electrically conductively connected to a column line.

5. The lighting arrangement according to claim 1 , wherein an ESD protection element is connected in parallel with each component.

6. The lighting arrangement according to claim 1 , wherein the lighting device comprises between two and eight row lines inclusive and between two and eight column lines inclusive.

7. The lighting arrangement according to claim 1 , wherein the lighting device comprises exactly two row lines.

8. The lighting arrangement according to claim 1 , wherein the lighting device is designed for a headlight.

9. The lighting arrangement according to claim 1 , wherein the column lines are operable with three potential states and one state of the row lines is a high-impedance state.

10. The lighting arrangement according to claim 1 , wherein a protection diode is connected in antiparallel with the component and the intermediate voltage is oriented in a forward direction of the protection diode.

11. The lighting arrangement according to claim 1 , wherein the row lines are operable with a duty cycle of less than 100%.

12. The lighting arrangement according to claim 11 , wherein the duty cycle is 100% divided by the number of row lines.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 3, 2020
From: OSRAM OPTO SEMICONDUCTORS GMBH
To: OSRAM OLED GMBH
Reel/Frame 051467/0906 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 6, 2019
From: EICHENBERG, BORIS; HOLZ, JÜRGEN
To: OSRAM OPTO SEMICONDUCTORS GMBH
Reel/Frame 048250/0991 →