Display device and method of driving the same
A display device including: a pixel unit partitioned into a plurality of blocks including at least one scan line, the pixel unit including pixels connected to the scan line and a data line in each of the blocks; a gamma voltage supplier configured to generate a gamma voltage, based on a gamma value; a data driver configured to generate a data signal to be supplied to the data line, using the gamma voltage; and a timing controller configured to supply different gamma values to at least two blocks among the blocks, each of the different gamma values corresponding to the same grayscale.
1 . A display device comprising:
a pixel unit partitioned into a plurality of blocks each including at least one scan line, the pixel unit including pixels connected to the at least one scan line and a data line in each of the plurality of blocks;
a gamma voltage supplier configured to generate a gamma voltage, based on a gamma value;
a data driver configured to generate a data signal to be supplied to the data line, using the gamma voltage; and
a timing controller configured to supply different gamma values for at least two blocks among the plurality of blocks, each of the different gamma values corresponding to the same grayscale and includes a first gamma value, a second gamma value and a third gamma value, wherein:
one of the different gamma values is applied to generate gamma voltages for a first of the at least two blocks, and
another of the different gamma values is applied to generate gamma voltages for a second of the at least two blocks.
2 . The display device of claim 1 , wherein the gamma voltage supplier generates different gamma voltages, which correspond to the same grayscale, based on the different gamma values.
3 . The display device of claim 2 , wherein the data driver generates data signals having different voltages, which are to be supplied to the at least two blocks, each of the data signals corresponding to the same grayscale.
4 . The display device of claim 1 , wherein the timing controller supplies the different gamma values to the at least two blocks to compensate for a load of the data line.
5 . The display device of claim 1 , wherein the plurality of blocks include an odd-numbered block including an odd-numbered scan line and an even-numbered block including an even-numbered scan line.
6 . The display device of claim 5 , wherein the timing controller supplies an odd gamma value, corresponding to the odd-numbered block, and supplies an even gamma value different from the odd gamma value, corresponding to the even-numbered block.
7 . The display device of claim 6 , wherein the pixel unit includes a plurality of areas including at least one odd-numbered block and at least one even-numbered block.
8 . The display device of claim 7 , wherein the timing controller supplies different even gamma values and different odd gamma values to their respective areas.
9 . The display device of claim 1 , wherein the pixel unit has widths that are at least partially different, and areas of the at least two blocks among the plurality of blocks are different.
10 . The display device of claim 9 , wherein the timing controller supplies the different gamma values to the at least two blocks with the different areas.
11 . The display device of claim 1 , wherein the timing controller includes:
a look-up table configured to store the gamma value; and
a gamma value supplier configured to supply, to the gamma voltage supplier, the gamma value corresponding to a position of a block to which the data signal is supplied.
12 . The display device of claim 11 , wherein the gamma value supplier determines the position of the block to which the data signal is supplied, using at least one of a data enable signal and a horizontal synchronization signal.
13 . The display device of claim 11 , wherein, when the gamma value corresponding to a first portion of the plurality of blocks is stored in the look-up table, the gamma value supplier generates the gamma value corresponding to a second portions of the plurality of blocks through interpolation.
14 . A method of driving a display device, the method comprising:
generating first block gamma voltages, based on a first block gamma value;
generating a first data signal, corresponding to the first block gamma voltages, wherein the first block gamma voltages include a first gamma voltage corresponding to a first color, a second gamma voltage corresponding to a second color, and a third gamma voltage corresponding to a third color;
supplying the first data signal to first pixels included in a first block;
generating second block gamma voltages, based on a second block gamma value different from the first block gamma value;
generating a second data signal, corresponding to the second block gamma voltages, wherein the second block gamma voltages include a first gamma voltage corresponding to the first color, a second gamma voltage corresponding to the second color, and a third gamma voltage corresponding to the third color; and
supplying the second data signal to second pixels included in a second block,
wherein the first pixels are supplied with the first data signal having a first voltage, and the second pixels are supplied with the second data signal having a second voltage different from the first voltage, the first data signal and the second data signal corresponding to the same grayscale.
15 . The method of claim 14 , wherein each of the first block and the second block includes at least one scan line.
16 . The method of claim 14 , wherein the first block includes an odd-numbered scan line, and the second block includes an even-numbered scan line.
17 . The method of claim 14 , wherein an area of the first block and an area of the second block are different from each other.
18 . The method of claim 14 , wherein the first block gamma value and the second block gamma value are set such that light with the same luminance is generated in the first pixels and the second pixels.
19 . The method of claim 14 , further comprising:
determining whether the first data signal or the second data signal has been supplied, using at least one of a data enable signal and a horizontal synchronization signal, and
storing the first block gamma value and the second block gamma value in a look-up table.
20 . An electronic device comprising:
a display device including:
a pixel unit partitioned into a plurality of blocks each including at least one scan line, the pixel unit including pixels connected to the at least one scan line and a data line in each of the plurality of blocks;
a gamma voltage supplier configured to generate a gamma voltage, based on a gamma value;
a data driver configured to generate a data signal to be supplied to the data line, using the gamma voltage; and
a timing controller configured to supply different gamma values for at least two blocks among the plurality of blocks, each of the different gamma values corresponding to the same grayscale and includes a first gamma value, a second gamma value and a third gamma value, wherein:
one of the different gamma values is applied to generate gamma voltages for a first of the at least two blocks, and
another of the different gamma values is applied to generate gamma voltages for a second of the at least two blocks.