Light emitting device and production system of the same

A light emitting device comprising:

• a display panel comprising a plurality of light emitting elements for displaying an image by video signals;
• a voltage source for controlling a voltage applied to the plurality of the light emitting elements;
• a first storing means stored with a first data including differences of relative luminance among the plurality of the light emitting elements as an information;
• a second storing means stored with a second data including a degree of a reduction of the luminance by a deterioration relative to a light emitting period of the light emitting element as an information;
• means for detecting the accumulated value of the light emitting periods of the plurality of the light emitting element from the video signals;
• and
• means for correcting the video signals to nullify the difference of the luminance among the plurality of the light emitting elements by using the first data, further predicting a value of the reduction of the luminance by the deterioration of the plurality of the light emitting elements by checking the detected accumulated value of the light emitting periods and the second data, correcting the voltage supplied from the power source to the plurality of the light emitting elements such that a luminance of one light emitting element of the plurality of the light emitting elements is brought back to an initial value thereof, and correcting the gray scales of the light emitting elements other than the one light emitting element by correcting the video signals to nullify differences between the value of the reduction of the luminance provided by the prediction of the one light emitting element and values of the reduction of the luminance provided by the prediction of the light emitting elements other than the one light emitting element.

A light emitting device comprising:

• a display panel comprising a plurality of light emitting elements for displaying an image by video signals;
• a voltage source for controlling a voltage applied to the plurality of the light emitting elements;
• a first storing means stored with a first data including differences of relative luminance among the plurality of the light emitting elements as an information;
• a second storing means stored with a second data including a degree of a reduction of the luminance by a deterioration relative to an accumulated value of current flowing to the light emitting element as an information;
• means for detecting the accumulated value of the current flowing to the plurality of the light emitting elements from the video signals;
• and
• means for correcting the video signals to nullify the difference of the luminance among the plurality of the light emitting elements by using the first data, further predicting a value of the reduction of the luminance by the deterioration of the plurality of the light emitting elements by checking the detected accumulated value of the current and the second data, correcting the voltage supplied from the power source to the plurality of the light emitting elements such that a luminance of one light emitting element of the plurality of light emitting elements is brought back to an initial value, and correcting the gray scales of the respective light emitting element other than the one light emitting element by correcting the video signals to nullify a difference between the value of the reduction of the luminance provided by the prediction of the one light emitting element and values of the reduction of the luminance provided by the prediction of the light emitting elements other than the one light emitting element.

A light emitting device comprising:

• a display panel comprising a plurality of light emitting elements for displaying an image by video signals;
• a voltage source for controlling a voltage applied to the plurality of the light emitting elements;
• a first storing means stored with a first data including differences of relative luminance among the plurality of the light emitting elements as an information;
• a second storing means stored with a second data including a degree of a reduction of the luminance by a deterioration relative to an accumulated value of numbers of the gray scales of the light emitting elements as an information;
• means for detecting the accumulated value of the numbers of the gray scales of the plurality of light emitting elements from the video signals;
• and
• means for correcting the video signal to nullify the difference of the luminance among the plurality of the light emitting elements by using the first data, further predicting a value of the reduction of the luminance by the deterioration of the plurality of the light emitting elements by checking the detected accumulated value of the numbers of the gray scales and the second data, correcting the voltage supplied from the power source to the plurality of the light emitting elements such that a luminance of one light emitting element of the plurality of the light emitting elements is brought back to an initial value thereof, and correcting the gray scales of the light emitting elements other than the one light emitting element by correcting the video signals to nullify differences between the value of the reduction of the luminance provided by the prediction of the one light emitting element and the values of the reduction of the luminance provided by the prediction of the light emitting elements other than the one light emitting element,
• wherein one of bits included in the video signals is used only for correcting the video signals.

A light emitting device comprising:

• a display panel comprising a plurality of light emitting elements for displaying an image by video signals;
• a voltage source for controlling a voltage applied to the plurality of the light emitting elements;
• a first storing means stored with a first data including differences of relative luminance among the plurality of the light emitting elements as an information;
• a second storing means stored with a second data including a degree of a reduction of the luminance by a deterioration relative to a light emitting period of the light emitting element as an information;
• means for detecting the accumulated value of the light emitting periods of the plurality of the light emitting element from the video signals;
• and
• means for correcting the video signal to nullify the difference of the luminance among the plurality of the light emitting elements by using the first data, further predicting a value of the reduction of the luminance by the deterioration of the plurality of the light emitting elements by checking the detected accumulated value of the light emitting periods and the second data, correcting the voltage supplied from the power source to the plurality of the light emitting elements such that a luminance of one light emitting element of the plurality of the light emitting elements is brought back to an initial value thereof, and correcting the gray scales of the light emitting elements other than the one light emitting element by correcting the video signals to nullify differences between the value of the reduction of the luminance provided by the prediction of the one light emitting element and values of the reduction of the luminance provided by the prediction of the light emitting elements other than the one light emitting element,
• wherein one of bits included in the video signals is used only for correcting the video signals.

A light emitting device comprising:

• a display panel comprising a plurality of light emitting elements for displaying an image by video signals;
• a voltage source for controlling a voltage applied to the plurality of the light emitting elements;
• a first storing means stored with a first data including differences of relative luminance among the plurality of the light emitting elements as an information;
• a second storing means stored with a second data including a degree of a reduction of the luminance by a deterioration relative to an accumulated value of numbers of gray scales of the light emitting elements as an information;
• means for detecting presence or absence of light emitting of each light emitting element by sampling the video signals by a plurality of times;
• and
• means for correcting the video signals to nullify the difference of the luminance among the plurality of light emitting elements by using the first data, further predicting a value of the reduction of the luminance by the deterioration of the plurality of the light emitting elements by checking a rate of a number of times of light emitting of each light emitting element sampled by the plurality of times and the second data, correcting the voltage supplied from the voltage source to the plurality of the light emitting elements such that the luminance of one light emitting element among the plurality of light emitting elements is brought back to an initial value, and correcting the gray scales of the light emitting elements other than the one light emitting element by correcting the video signals to nullify differences between the value of the reduction of the luminance provided by the prediction of the one light emitting element and values of the reduction of the luminance provided by the prediction of the light emitting elements other than the one light emitting element.

A light emitting device comprising:

• a display panel comprising a plurality of light emitting elements;
• a voltage source for applying a voltage to the plurality of the light emitting elements;
• a first memory storing a first data including differences of initial current values of the plurality of the light emitting elements;
• a second memory storing a second data including a change of a luminance of the light emitting element with an accumulated value of one selected from the group consisting of gray scales, light emitting.-periods and current of the light emitting element;
• a monitoring portion for monitoring the accumulated value;
• a voltage correcting circuit for correcting a voltage applied to the plurality of the light emitting elements;
• and
• a video signal correcting circuit for correcting video signals,
• wherein the voltage correcting circuit predicts the luminance of each of the light emitting elements after deterioration using the second data and the accumulated value and corrects the voltage using the predicted luminance in order to bring back the luminance of a selected light emitting element to an initial luminance thereof, and
• wherein the video signal correcting circuit predicts the luminance of each of the light emitting elements after deterioration using the second data and the accumulated value and corrects the video signals of the light emitting elements other than the selected light emitting element using the first data and the predicted luminance in order to bring back the luminance of each of the light emitting elements other than the selected light emitting element to an initial luminance thereof.

A light emitting device comprising:

• a display panel comprising a plurality of light emitting elements;
• a voltage source for applying a voltage to the plurality of the light emitting elements;
• a first memory storing a first data including differences of initial current values of the plurality of the light emitting elements;
• a second memory storing a second data including a change of a luminance of the light emitting element with an accumulated value of one selected from the group consisting of gray scales, light emitting periods and current of the light emitting element;
• a monitoring portion for monitoring the accumulated value;
• a voltage correcting circuit for correcting a voltage applied to the plurality of the light emitting elements;
• and
• a video signal correcting circuit for correcting the video signals,
• wherein the voltage correcting circuit predicts the luminance of each of the light emitting elements after deterioration using the second data and the accumulated value and corrects the voltage using the predicted luminance in order to bring back the luminance of a selected light emitting element to an initial luminance thereof, and
• wherein the video signal correcting circuit corrects the video signals of the light emitting elements other than the selected light emitting element using the first data and the luminance predicted in the voltage correcting circuit in order to bring back the luminance of each of the light emitting elements other than the selected light emitting element to an initial luminance thereof.

A light emitting device comprising:

• a display panel comprising a plurality of light emitting elements;
• a voltage source for applying a voltage to the plurality of the light emitting elements;
• a first memory storing a first data including differences of initial luminance of the plurality of the light emitting elements;
• a second memory storing a second data including a change of a luminance of the light emitting element with an accumulated value of one selected from the group consisting of gray scales, light emitting periods and current of the light emitting element;
• a monitoring portion for monitoring the accumulated value;
• a voltage correcting circuit for correcting a voltage applied to the plurality of the light emitting elements;
• and
• a video signal correcting circuit for correcting the video signals,
• wherein the voltage correcting circuit predicts the luminance of each of the light emitting elements after deterioration using the second data and the accumulated value and corrects the voltage using the predicted luminance in order to bring back the luminance of a selected light emitting element to an initial luminance thereof, and
• wherein the video signal correcting circuit predicts the luminance of each of the light emitting elements after deterioration using the second data and the accumulated value and corrects the video signals of the light emitting elements other than the selected light emitting element using the first data and the predicted luminance in order to bring back the luminance of each of the light emitting elements other than the selected light emitting element to an initial luminance thereof.

A light emitting device comprising:

• a display panel comprising a plurality of light emitting elements;
• a voltage source for applying a voltage to the plurality of the light emitting elements;
• a first memory storing a first data including differences of initial luminance of the plurality of the light emitting elements;
• a second memory storing a second data including a change of a luminance of the light emitting element with an accumulated value of one selected from the group consisting of gray scales, light emitting periods and current of the light emitting element;
• a monitoring portion for monitoring the accumulated value;
• a voltage correcting circuit for correcting a voltage applied to the plurality of the light emitting elements;
• and
• a video signal correcting circuit for correcting the video signals,
• wherein the voltage correcting circuit predicts the luminance of each of the light emitting elements after deterioration using the second data and the accumulated value and corrects the voltage using the predicted luminance in order to bring back the luminance of a selected light emitting element to an initial luminance thereof, and
• wherein the video signal correcting circuit corrects the video signals of the light emitting elements other than the selected light emitting element using the first data and the luminance predicted in the voltage correcting circuit in order to bring back the luminance of each of the light emitting elements other than the selected light emitting element to an initial luminance thereof.

A production system of an light emitting device which is a production system of a light emitting device having a correcting circuit, said production system comprising:

• means for forming a panel having a plurality of light emitting elements;
• means for making the plurality of respective light emitting elements emit light successively and successively measuring a flowing current;
• first storing means for storing the measured current successively as first data and thereafter simultaneously transmitting the first data to second storing means included by the connecting circuit;
• means for transmitting second data including a degree of a reduction of a luminance by a deterioration relative to an accumulated value of a number of gray scale of the light emitting element to third storing means included by the correcting circuit as information;
• and
• means for mounting the correcting circuit to the panel.

A production system of a light emitting device which is a production system of a light emitting device including a correcting circuit, said production system comprising:

• means for forming a panel including a plurality of light emitting elements and a correcting circuit;
• means for successively making the plurality of respective light emitting elements emit light and successively measuring a flowing current;
• first storing means for storing the measured current successively as first data and thereafter transmitting the first data simultaneously to second storing means included by the correcting circuit;
• and
• means for transmitting second data including a degree of a reduction of a luminance by a deterioration relative to an accumulated value of a number of gray scale of the light emitting element to third storing means included by the correcting circuit as information.

A production system of a light emitting device which is a production system of a light emitting device including a correcting circuit, said production system comprising:

• means for forming a panel including a plurality of light emitting elements;
• means for making the plurality of respective light emitting elements emit light and measuring a luminance of the light emitting element;
• first storing means for storing first data including the measured luminance as information and thereafter transmitting the first data simultaneously to second storing means included by the correcting circuit;
• means for transmitting second data including a degree of a reduction of a luminance by a deterioration relative to an accumulated value of a number of gray scale of the light emitting element as information to third storing means included by the correcting circuit;
• and
• means for mounting the correcting circuit to the panel.

A production system of a light emitting device which is a production system of a light emitting device including a correcting circuit, said production system comprising:

• means for forming a panel including a plurality of light emitting elements and a correcting circuit;
• means for making the plurality of respective light emitting elements emit light and measuring a luminance of the respective light emitting element;
• first storing means for storing first data including the measured luminance as information and thereafter transmitting the first data simultaneously to second storing means included by the correcting circuit;
• and
• means for transmitting second data including a degree of a reduction of the luminance by a deterioration relative to an accumulated value of a number of gray scale of the light emitting element as information to third storing means included by the correcting circuit.