Display device with demultiplexer circuit
A display device includes a scan driver to supply a scan signal via the scan lines, a data driver to supply data signals via a plurality of source channels, a demux circuit to selectively connect the data lines with the source channels; and a demux controller to control the demux circuit to simultaneously apply the data signals to different data lines between pixels of adjacent columns.
1. A display device, comprising:
a pixel area including pixels connected to scan lines and data lines;
a scan driver to supply a scan signal via the scan lines;
a data driver to supply data signals via a plurality of source channels;
a demux circuit to selectively connect the data lines with the source channels; and
a demux controller to control the demux circuit to simultaneously connect a first pair of data lines between pixels of a first pair of adjacent columns to the source channels, and to simultaneously connect a second pair of data lines between pixels of a second pair of adjacent columns to the source channels, wherein
the first pair of data lines and the second pair of data lines are connected to the source channels at different timings.
2. The display device as claimed in claim 1 , wherein pixels of one column are alternately connected to odd-numbered data lines and even-numbered data lines.
3. The display device as claimed in claim 2 , wherein the demux circuit includes a plurality of demux switches connected between the data lines and the source channels, the demux circuit to selectively supply the data signals to the data lines through switching operations of the demux switches.
4. The display device as claimed in claim 3 , wherein the demux controller is to generate a plurality of demux control signals to switch the demux switches at different timings.
5. The display device as claimed in claim 4 , wherein:
the demux switches connected to a first one of the odd-numbered data lines and a first one of the even-numbered data lines are to be switched by a same demux control signal.
6. The display device as claimed in claim 5 , wherein:
the data lines connected to pixels of even-numbered rows are to be electrically connected to the source channels while the scan signal is supplied to pixels of odd-numbered rows, and
the data lines connected to the pixels of the odd-numbered rows are to be electrically connected to the source channels while the scan signal is supplied to the pixels of the even-numbered rows.
7. The display device as claimed in claim 6 , wherein the demux control signals includes:
a first demux control signal to control the demux switches connected to a first pixel group of the pixels of the odd-numbered rows;
a second demux control signal to control the demux switches connected to a second pixel group of the pixels of the odd-numbered rows;
a third demux control signal to control the demux switches connected to a third pixel group of the pixels of the even-numbered rows; and
a fourth demux control signal to control the demux switches connected to a fourth pixel group of the pixels of the even-numbered rows.
8. The display device as claimed in claim 7 , wherein:
the third demux control signal and the fourth demux control signal are to be sequentially supplied to the demux circuit while the scan signal is supplied to the pixels of the odd-numbered rows, and
the first demux control signal and the second demux control signal are to be sequentially supplied to the demux circuit while the scan signal is supplied to the pixels of the even-numbered rows.
9. The display device as claimed in claim 7 , wherein each of the first to fourth pixel groups includes red, green, and blue pixels.
10. The display device as claimed in claim 9 , wherein the pixels has a pentile matrix structure.
11. The display device as claimed in claim 1 , wherein the data driver includes a dummy source channel corresponding to one of the data lines.
12. The display device as claimed in claim 11 , wherein at least one of a first data line or a last data line of the data lines are to be electrically connected to the dummy source channel via the demux circuit.
13. A controller, comprising:
signal lines; and
a controller to output a plurality of control signals through the signal lines connected to a demultiplexer, which is to selectively connect data lines to source channels of a display panel, wherein
the control signals are to control the demultiplexer to alternately connect odd-numbered and even-numbered data lines to pixels of one column, wherein
a same one of the control signals is to control switches of the demultiplexer connected to a first one of the odd-numbered data lines and a first one of the even-numbered data lines between pixels of adjacent columns, and wherein:
the first one of the odd-numbered data lines is adjacent to the first one of the even-numbered data lines between the pixels in the adjacent columns, and
the controller is to generate the control signals to switch the switches connected to data lines between pixels in different pairs of the adjacent columns at different timings.
14. The controller as claimed in claim 13 , wherein the control signals include:
a first control signal to control switches connected to a first pixel group of pixels of odd-numbered rows;
a second control signal to control switches connected to a second pixel group of pixels of the odd-numbered rows;
a third control signal to control switches connected to a third pixel group of pixels of even-numbered rows; and
a fourth control signal to control switches connected to a fourth pixel group of pixels of even-numbered rows.
15. The controller as claimed in claim 14 , wherein:
the third control signal and the fourth control signal are to be sequentially supplied to the demultiplexer while a scan signal is supplied to the pixels of the odd-numbered rows, and
the first control signal and the second control signal are to be sequentially supplied to the demultiplexer while the scan signal is supplied to the pixels of the even-numbered rows.