Driver integrated circuit (IC) chip and display device having the same
A driver integrated circuit (IC) chip includes gamma voltage generators, a line selector, and a data driver. The gamma voltage generators generate gamma voltage sets based on a reference voltage set. The line selector controls the connection between a plurality of voltage line sets for providing the reference voltage set and the gamma voltage generators based on a selection signal. The data driver converts input image data to data signals based on the gamma voltage sets.
1. A driver integrated circuit (IC) chip, comprising:
a plurality of gamma voltage generators to generate a plurality of gamma voltage sets based on a reference voltage set;
a line selector to control a connection between a plurality of voltage line sets for providing the reference voltage set and the gamma voltage generators, at least two of the gamma voltage generators to share the reference voltage set based on a selection signal; and
a data driver to convert input image data to data signals based on the gamma voltage sets,
wherein the gamma voltage generators include:
a first gamma voltage generator to generate a first gamma voltage set for first color light;
a second gamma voltage generator to generate a second gamma voltage set for second color light; and
a third gamma voltage generator to generate a third gamma voltage set for third color light, and
wherein the line selector includes:
a first switch between a first voltage line set of the voltage line sets and the second gamma voltage generator, the first switch to be turned-on in response to the selection signal; and
a second switch between a second voltage line set of the voltage line sets and the second gamma voltage generator, the second switch to be turned-off in response to the selection signal.
2. The driver IC chip as claimed in claim 1 , wherein the first through third colors of light are red, green, and blue respectively.
3. The driver IC chip as claimed in claim 1 , wherein the selection signal is included in protocol data for receiving the input image data.
4. A driver integrated circuit (IC) chip, comprising:
a plurality of gamma voltage generators to generate a plurality of gamma voltage sets based on a reference voltage set;
a line selector to control a connection between a plurality of voltage line sets for providing the reference voltage set and the gamma voltage generators, at least two of the gamma voltage generators to share the reference voltage set based on a selection signal; and
a data driver to convert input image data to data signals based on the gamma voltage sets,
wherein the gamma voltage generators include:
a first gamma voltage generator to generate a first gamma voltage set for first color light;
a second gamma voltage generator to generate a second gamma voltage set for second color light;
a third gamma voltage generator to generate a third gamma voltage set for third color light; and
a fourth gamma voltage generator to generate a fourth gamma voltage set for fourth color light, and
wherein the line selector includes:
a first switch between a first voltage line set of the voltage line sets and the second gamma voltage generator, the first switch to be turned-on in response to a first selection signal;
a second switch between a second voltage line set of the voltage line sets and the second gamma voltage generator, the second switch to be turned-off in response to the first selection signal;
a third switch between a third voltage line set of the voltage line sets and the fourth gamma voltage generator, the third switch to be turned-on a second selection signal; and
a fourth switch between a fourth voltage line set of the voltage line sets and the fourth gamma voltage generator, the fourth switch to be turned-off the second selection signal.
5. The driver IC chip as claimed in claim 4 , wherein the first through fourth colors of light are red, green, blue, and white respectively.
6. A display device, comprising:
a display panel including a plurality of pixels;
a driver integrated circuit (IC) chip to drive the display panel; and
a power supply to provide at least one reference voltage set to the driver IC chip,
wherein the driver IC chip includes:
a plurality of gamma voltage generators to generate a plurality of gamma voltage sets based on the reference voltage set;
a line selector to control a connection between a plurality of voltage line sets for providing the reference voltage set and the gamma voltage generators, at least two of the gamma voltage generators to share the reference voltage set based on a selection signal; and
a data driver to convert input image data to a data signal based on the gamma voltage sets,
wherein the gamma voltage generators include:
a first gamma voltage generator to generate a first gamma voltage set for first color light;
a second gamma voltage generator to generate a second gamma voltage set for second color light; and
a third gamma voltage generator to generate a third gamma voltage set for third color light, and
wherein the line selector includes:
a first switch between a first voltage line set of the voltage line sets and the second gamma voltage generator, the first switch to be turned-on in response to the selection signal; and
a second switch between a second voltage line set of the voltage line sets and the second gamma voltage generator, the second switch to be turned-off in response to the selection signal.
7. The display device as claimed in claim 6 , wherein:
the power supply is on a printed circuit board (PCB), and
the driver IC chip is connected to the display panel and the PCB by a tape carrier package (TCP) manner or a chip-on-film (COF) manner.
8. The display device as claimed in claim 7 , wherein:
a provision voltage line set connected to the gamma voltage generators among the voltage line sets is bonded to the PCB, and
a non-provision voltage line set disconnected from the gamma voltage generators among the voltage line sets is not bonded to the PCB.
9. The display device as claimed in claim 6 , wherein the first through third colors of light are red, green, and blue respectively.
10. The display device as claimed in claim 6 , wherein each of the gamma voltage generators includes a resistance string to generate one of the gamma voltage sets by distributing the reference voltage set.
11. A display device, comprising:
a display panel including a plurality of pixels;
a driver integrated circuit (IC) chip to drive the display panel; and
a power supply to provide at least one reference voltage set to the driver IC chip,
wherein the driver IC chip includes:
a plurality of gamma voltage generators to generate a plurality of gamma voltage sets based on the reference voltage set;
a line selector to control a connection between a plurality of voltage line sets for providing the reference voltage set and the gamma voltage generators, at least two of the gamma voltage generators to share the reference voltage set based on a selection signal; and
a data driver to convert input image data to a data signal based on the gamma voltage sets,
wherein the gamma voltage generators include:
a first gamma voltage generator to generate a first gamma voltage set for first color light;
a second gamma voltage generator to generate a second gamma voltage set for second color light;
a third gamma voltage generator to generate a third gamma voltage set for third color light; and
a fourth gamma voltage generator to generate a fourth gamma voltage set for fourth color light, and
wherein the line selector includes:
a first switch between a first voltage line set of the voltage line sets and the second gamma voltage generator, the first switch to be turned-on in response to a first selection signal;
a second switch between a second voltage line set of the voltage line sets and the second gamma voltage generator, the second switch to be turned-off in response to the first selection signal;
a third switch between a third voltage line set of the voltage line sets and the fourth gamma voltage generator, the third switch to be turned-on a second selection signal; and
a fourth switch between a fourth voltage line set of the voltage line sets and the fourth gamma voltage generator, the fourth switch to be turned-off the second selection signal.
12. The display device as claimed in claim 11 , wherein the first through fourth colors of light are red, green, blue, and white respectively.
13. The display device as claimed in claim 6 , wherein the selection signal is included in protocol data for receiving the input image data.