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US 10,854,134 B2Granted
Source signal driving apparatus for display device
AssigneeSilicon Works Co., Ltd.
InventorYoung Gi Kim
Life of this patent
Estimating the term…
Abstract
Disclosed is a source signal driving apparatus capable of implementing channels at high integration density. The source signal driving apparatus is configured to sequentially output source signals by sequentially delaying enable time points of enable signals provided to channel circuits.
Claims16
A source signal driving apparatus for a display device, comprising:
- a plurality of channel circuits formed in one source driver implemented as a chip, the plurality of channel circuit connected to a power source, divided into a plurality of groups, and each configured to output sequential source signals and each comprise a digital-analog converter, an output buffer and a multiplexer;
- a controller configured to provide one or more enable signals;
- and
- a plurality of transfer buffer circuitry each configured to transfer the one or more enable signals between a pair of groups, delay enable time points of the one or more enable signals by a preset time, and transfer the one or more enable signals, wherein the one or more enable signals are sequentially transferred to the plurality of groups while the enable time points are gradually delayed by the plurality of transfer buffer circuitry, and the plurality of channel circuits sequentially output the source signals at different enable time points by the one or more enable signals for the respective groups.
1 more element
A source signal driving apparatus for a display device, comprising:
- a plurality of channel circuits formed in one source driver implemented as a chip, the plurality of channel circuit connected to a power source, divided into a plurality of groups, and each configured to output sequential source signals and each comprise a digital-analog converter, an output buffer and a multiplexer and first to third enable signals having a same enable time point are provided to the digital-analog converter, the output buffer and the multiplexer;
- and
- a controller configured to provide the groups with an equal number of one or more enable signals having different enable time points for the respective groups, wherein the plurality of channel circuits sequentially output the source signals at different enable time points by the one or more enable signals for the respective groups.
A source signal driving apparatus for a display, comprising:
- a plurality of channel circuits formed in one source driver implemented as a chip, the plurality of channel circuit connected to a power source, divided into a plurality of groups, and each configured to output sequential source signals and each comprise a digital-analog converter, an output buffer and a multiplexer and first to third enable signals having the same enable time point are provided to the digital-analog converter, the output buffer and the multiplexer;
- a controller configured to provide enable data which is enabled during an enable period for outputting the source signals and a shift clock which has a plurality of cycles during the enable period;
- and
- a plurality of shifter circuitry corresponding to the respective groups, and each configured to provide one or more enable signals to the corresponding group,
- wherein the enable data and the shift clock are sequentially transferred to the enable signal providing units,
- the plurality of shifter circuitry generate the one or more enable signals having enable time points which are sequentially delayed in synchronization with the shift clock according to the transfer order of the enable data and the shift clock, and
- the plurality of channel circuits sequentially output the source signals in response to different enable time points by the one or more enable signals for the respective groups.
4 more elements
Dependencies are inferred from the claim text.