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US 9,430,961 B2Granted
Data driver
AssigneeDongbu HiTek Co., Ltd.
InventorsChang Woon Kim, Kwang Jin Lee
Life of this patent
Estimating the term…
Abstract
A data driver is disclosed. The data driver includes a first latch unit including a plurality of first latches configured to store data, a selector configured to select and/or output data in two or more first latches, a level shifter unit configured to convert a voltage level of the data in the two or more selected first latches and output the voltage level-converted data, and a second latch unit including a plurality of second latches configured to store the voltage level-converted data.
Claims15
A data driver comprising:
- a first latch unit comprising a plurality of first groups, wherein each of the first groups includes two or more first latches configured to store data;
- a level shifter unit comprising a plurality of level shifters configured to convert a voltage level, wherein each of the plurality of level shifters corresponds to one of the first groups;
- a selector including a plurality of switches, each of the plurality of switches being between one of the first latches in each first group and the level shifter corresponding to the first group and providing data from one of the first latches in each first group to the corresponding one of the plurality of level shifters;
- a second latch unit comprising a plurality of second groups, wherein each of the second groups corresponds to one of the plurality of level shifters and includes second latches;
- and
- a timing controller configured to generate first control signals that control operations of the plurality of switches and second control signals that simultaneously enable one of the second latches in each second group,
- wherein one of the second latches in each second group is simultaneously enabled, and the enabled one of the second latches in each second group stores data output from the corresponding one of the plurality of level shifters.
4 more elements
A data driver comprising:
- a first latch unit comprising a plurality of first groups, wherein each of the first groups includes first latches configured to store data;
- a level shifter unit comprising a plurality of level shifters configured to convert a voltage level of input data and output the voltage level-converted data, wherein each of the plurality of level shifters corresponds to one of the first groups;
- a selector including a plurality of switches, each of the plurality of switches being between one of the first latches in each first group and the level shifter corresponding to the first group and providing data from one of the first latches in each first group to the corresponding one of the plurality of level shifters;
- a second latch unit comprising a plurality of second groups, wherein each of the second groups corresponds to one of the plurality of the level shifters and includes second latches;
- a digital-to-analog converter configured to convert an output of the second latch unit into an analog signal;
- an output unit configured to amplify the analog signal output from the digital-to-analog converter, and output the amplified analog signal;
- and
- a timing controller configured to generate first control signals that control operations of the plurality of switches and second control signals that simultaneously enable one of the second latches in each second group,
- wherein one of the second latches in each second group is simultaneously enabled, and the enabled one of the second latches in each second group stores the data output from the corresponding level shifter.
6 more elements
A data driver comprising:
- a plurality of first latch groups, wherein each of the first latch groups includes first latches configured to store data;
- a plurality of level shifters configured to convert a voltage level, each of the plurality of level shifters corresponding to one of the first latch groups;
- a selector including a plurality of switches, each of the plurality of switches being between one of the first latches in each first group and the level shifter corresponding to the first group and providing data from one of the first latches in each first latch group to the corresponding one of the plurality of level shifters;
- second latch groups, each corresponding to one of the plurality of level shifters, each of second latch groups including second latches;
- and
- a timing controller configured to generate first control signals that control operations of the plurality of switches and second control signals that simultaneously enable one of the second latches in each second latch group,
- wherein the one of the second latches in each second latch group enabled by the second control signals stores data output from the corresponding level shifter.
4 more elements
Dependencies are inferred from the claim text.