Demultiplexer, display apparatus using the same, and display panel thereof

A display apparatus comprising:

• a display area comprising a plurality of demultiplexed data lines for transmitting demultiplexed data currents, a plurality of scan lines for transmitting selection signals, and a plurality of pixel circuits coupled to the demultiplexed data lines and the plurality of scan lines,
• a data driver for generating data currents to be programmed to the plurality of pixel circuits, and for applying a respective one of the data currents to each of a plurality of data lines;
• a plurality of light emitting elements configured to display an image corresponding to a respective one of the demultiplexed data currents;
• a scan driver for generating the selection signals and for applying the selection signals to the plurality of scan lines;
• a demultiplexer configured to time-divisionally demultiplex the data currents, and to transmit the demultiplexed data currents alternately to two adjacent ones of the plurality of demultiplexed data lines;
• and
• a common current source connected to at least one of the data lines and configured to provide the data currents for programming at least one of the pixel circuits to drive two adjacent ones of light emitting elements in a same row corresponding to a same one of the scan lines,
• wherein the demultiplexed data currents on the two adjacent ones of the demultiplexed data lines are provided, in a first field, to one of the pixel circuits coupled to both a first one of the two adjacent ones of the demultiplexed data lines and one of the plurality of scan lines and one of the pixel circuits coupled to both a second one of the two adjacent ones of the demultiplexed data lines and a next one of the plurality of scan lines, and in a second field, to one of the pixel circuits coupled to both the second one of the two adjacent ones of the demultiplexed data lines and the one of the plurality of scan lines and one of the pixel circuits coupled to both the first one of the two adjacent ones of the demultiplexed data lines and the next one of the plurality of scan lines, such that for a duration of one of the selection signals on the one of the plurality of scan lines, only one of the two adjacent ones of the plurality of demultiplexed data lines receives a respective one of the demultiplexed data currents.

A display panel comprising:

• a data driver for providing data currents as image signals;
• a plurality of data lines for transmitting the data currents;
• a plurality of scan lines configured to transmit selection signals;
• a demultiplexer configured to time-divisionally demultiplex the data currents, to transmit demultiplexed data currents alternately to two adjacent ones of a plurality of demultiplexed data lines;
• a plurality of pixel circuits coupled to the demultiplexed data lines, and the plurality of scan lines, each of the pixel circuits comprising a driving circuit configured to provide a driving current corresponding to a respective one of the demultiplexed data currents;
• and
• a common current source connected to at least one of the data lines and configured to provide the data currents for programming at least one of the pixel circuits to drive two adjacent ones of light emitting elements in a same row corresponding to a same one of the scan lines,
• wherein the demultiplexed data currents on the two adjacent ones of the demultiplexed data lines are provided, in a first field, to one of the pixel circuits coupled to both a first one of the two adjacent ones of the demultiplexed data lines and one of the plurality of scan lines and one of the pixel circuits coupled to both a second one of the two adjacent ones of the demultiplexed data lines and a next one of the plurality of scan lines, and in a second field, to one of the pixel circuits coupled to both the second one of the two adjacent ones of the demultiplexed data lines and the one of the plurality of scan lines and one of the pixel circuits coupled to both the first one of the two adjacent ones of the demultiplexed data lines and the next one of the plurality of scan lines, such that for a duration of one of the selection signals on the one of the plurality of scan lines, only one of the two adjacent ones of the plurality of demultiplexed data lines receives a respective one of the demultiplexed data currents.

A driving method of a display apparatus comprising a plurality of data lines for transmitting data currents, a plurality of scan lines for transmitting selection signals, a demultiplexer for demultiplexing the data currents to transmit demultiplexed data currents alternately to two adjacent ones of a plurality of demultiplexed data lines, and a plurality of pixel circuits coupled to the demultiplexed data lines and the plurality of scan lines, the method comprising:

• applying one of the selection signals to a respective one of the pixel circuits;
• storing a voltage corresponding to a respective one of the demultiplexed data currents to the respective one of the pixel circuits while the one of the selection signals is applied;
• and
• providing a driving current corresponding to the respective one of the demultiplexed data currents,
• providing the data currents for programming at least one of the pixel circuits to drive two adjacent ones of light emitting elements in a same row corresponding to a same one of the scan lines using a common current source connected to at least one of the data lines,
• wherein the demultiplexed data currents on the two adjacent ones of the demultiplexed data lines are provided, in a first field, to one of the pixel circuits coupled to both a first one of the two adjacent ones of the demultiplexed data lines and one of the plurality of scan lines and one of the pixel circuits coupled to both a second one of the two adjacent ones of the demultiplexed data lines and a next one of the plurality of scan lines, and in a second field, to one of the pixel circuits coupled to both the second one of the two adjacent ones of the demultiplexed data lines and the one of the plurality of scan lines and one of the pixel circuits coupled to both the first one of the two adjacent ones of the demultiplexed data lines and the next one of the plurality of scan lines, such that for a duration of one of the selection signals on the one of the plurality of scan lines, only one of the two adjacent ones of the plurality of demultiplexed data lines receives a respective one of the demultiplexed data currents.

A display apparatus comprising:

• a data driver for outputting data currents as an image signal;
• a plurality of data lines for transmitting the data currents;
• a plurality of scan lines configured to transmit selection signals;
• a plurality of emission lines configured to transmit emission signals;
• a demultiplexer configured to time-divisionally demultiplex the data currents, to transmit demultiplexed data currents alternately to two adjacent ones of a plurality of demultiplexed data lines;
• a plurality of pixel circuits coupled to the demultiplexed data lines, the plurality of emission lines, and the plurality of scan lines, each of the pixel circuits comprising a driving circuit configured to provide a driving current corresponding to a respective one of the demultiplexed data currents in response to a respective one of the emission signals;
• a light emitting element for outputting light corresponding to the driving current from the driving circuit;
• and
• a common current source connected to at least one of the data lines and configured to provide the data currents for programming at least one of the pixel circuits to drive two adjacent ones of light emitting elements in a same row corresponding to a same one of the scan lines,
• wherein the demultiplexed data currents on the two adjacent ones of the demultiplexed data lines are provided, in a first field, to one of the pixel circuits coupled to both a first one of the two adjacent ones of the demultiplexed data lines and one of the plurality of scan lines and one of the pixel circuits coupled to both a second one of the two adjacent ones of the demultiplexed data lines and a next one of the plurality of scan lines, and in a second field, to one of the pixel circuits coupled to both the second one of the two adjacent ones of the demultiplexed data lines and the one of the plurality of scan lines and one of the pixel circuits coupled to both the first one of the two adjacent ones of the demultiplexed data lines and the next one of the plurality of scan lines, such that for a duration of one of the selection signals on the one of the plurality of scan lines, only one of the two adjacent ones of the plurality of demultiplexed data lines receives a respective one of the demultiplexed data currents.