Lighting device, lighting arrangement comprising lighting device and method for operating a lighting device
View Patent ↗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.
1. A method for operating 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,
wherein in each case one of at least two states is set for an operating potential of the row lines and a current supply of the column lines is set in each case by means of a current driver,
wherein a row line is operated in an activated state,
wherein a further row line is operated in a high-impedance state,
wherein a column line is operated in an activated state, and
wherein a further column line is operated with an intermediate voltage, which is between the voltage of the activated state of the row line and the voltage of the activated state of the column line, such that the component connected to the activated row line and to the column line with the intermediate voltage is deactivated.
2. The method according to claim 1 , wherein components provided for generating radiation are preselected by the setting of an activated state for the assigned row lines and are operated by the activation of the current driver of the assigned column line.
3. The method according to claim 2 , wherein a current intensity provided by the current driver is set depending on the number of row lines in the activated state.
4. The method according to claim 1 , wherein the row lines are operated with a duty cycle of 100% and in each case only entire rows and/or entire columns are deactivated.
5. The method according to claim 1 , wherein at least two row lines are operated alternately with a duty cycle of less than 100%, such that at least one component is deactivated and at least one further component in the column associated with the deactivated component and a further component in the row associated with the deactivated component are activated simultaneously.
6. The method according to claim 1 , wherein in each case an ESD protection element having unidirectional blocking behavior with respect to the forward direction is connected in antiparallel with the components.
7. The method according to claim 1 , wherein at least two row lines are operated alternately with a duty cycle of less than 100%, such that at least one component is deactivated and at least one further component in the column associated with the deactivated component and a further component in the row associated with the deactivated component are activated simultaneously and the current intensity is increased in a manner corresponding to the inverse duty cycle.