DATA DRIVER AND RELATED METHOD USED IN A DISPLAY DEVICE FOR SAVING SPACE
First Claim
1. A method for driving data in a data driver the data driver driving at least a data line of a display device, the data driver comprising:
- an input module comprising an N-bit circuit line for receiving an N-bit digital data set, the N-bit digital data set comprising m groups of digit data, wherein N and m are both integers greater than or equal to 2;
a plurality of latches electrically connected to the input module, each latch temporarily storing a group of digit data of the digital data set;
a plurality of shift registers for sequentially outputting a plurality of switch signals to determined sequence by which the m groups of digit data are transmitted to the plurality of latches; and
a digital-to-analog converter electrically connected to the plurality of latches for receiving the digital data set outputted from the plurality of latches to transform the digital data set into an analog voltage signal and to output the analog voltage signal to the data line;
the method comprising;
utilizing the N-bit circuit line of the input module to receive the digital data set;
utilizing the plurality of shift registers to sequentially output a plurality of switch signals to sequentially transmit the m groups of digit data to the plurality of latches for temporary storing;
sequentially transmitting the temporarily stored m groups of digit data to the digital-to-analog converter according to the sequence for the digital-to-analog converter to receive the digital data set; and
utilizing the digital-to-analog converter to transform the digital data set into the analog voltage signal and to output the analog voltage signal to the data line;
wherein according to the sequence by which the shift register outputs the switch signals, a group of digit data among the m groups of digit data first arriving to the corresponding digital-to-analog converter will pre-charge the data line.
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Accused Products
Abstract
A method for driving data with a data driver in a display device. The data driver includes an input module, a plurality of latches, a plurality of shift registers, and a digital-to-analog converter (DAC). The method includes utilizing the input module to receive an N-bit digital data set that is classified into m groups, wherein m and n are integers with values either equal to or greater than two. The method further includes utilizing the shift registers to output a plurality of switch signals so as to store the m groups of digital data into the latches in sequence, transmitting the m groups of digital data into the DAC in sequence according to the switch signals, transforming the m groups of digital data into a corresponding analog voltage signal in sequence, and outputting the analog voltage signal to a data line in sequence for pre-charging and driving the data line.
195 Citations
16 Claims
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1. A method for driving data in a data driver the data driver driving at least a data line of a display device, the data driver comprising:
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an input module comprising an N-bit circuit line for receiving an N-bit digital data set, the N-bit digital data set comprising m groups of digit data, wherein N and m are both integers greater than or equal to 2;
a plurality of latches electrically connected to the input module, each latch temporarily storing a group of digit data of the digital data set;
a plurality of shift registers for sequentially outputting a plurality of switch signals to determined sequence by which the m groups of digit data are transmitted to the plurality of latches; and
a digital-to-analog converter electrically connected to the plurality of latches for receiving the digital data set outputted from the plurality of latches to transform the digital data set into an analog voltage signal and to output the analog voltage signal to the data line;
the method comprising;
utilizing the N-bit circuit line of the input module to receive the digital data set;
utilizing the plurality of shift registers to sequentially output a plurality of switch signals to sequentially transmit the m groups of digit data to the plurality of latches for temporary storing;
sequentially transmitting the temporarily stored m groups of digit data to the digital-to-analog converter according to the sequence for the digital-to-analog converter to receive the digital data set; and
utilizing the digital-to-analog converter to transform the digital data set into the analog voltage signal and to output the analog voltage signal to the data line;
wherein according to the sequence by which the shift register outputs the switch signals, a group of digit data among the m groups of digit data first arriving to the corresponding digital-to-analog converter will pre-charge the data line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A data driver for driving at least a data line of a display device, the data driver comprising:
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N bit-lines corresponding an N-bit digital data set for receiving the digital data set and for classifying the N-bit digital data set into m groups of digit data, wherein N and m are both integers greater than or equal to 2;
m shift registers for sequentially outputting m switch signals to determine a sequence by which the m groups of digit data are transmitted;
a plurality of latches electrically connected to the N bit-lines for temporarily storing the digital data set from the N bit-lines; and
at least a digital-to-analog converter for receiving digital signals outputted from the plurality of latches to transform the digital signals into an analog voltage signal and to output the analog voltage signal to the data line;
wherein after the N bit-lines receive the N-bit digital data set and classify the N-bit digital data set into m groups of digit data, the m groups of digit data will be sequentially transmitted to the corresponding latch for temporary storing according to the sequence by which the m shift registers generate the switch signals, and the temporarily stored m groups of digit data will be sequentially transmitted to the corresponding digital-to-analog converter according to the sequence, and afterwards the digital-to-analog converter will transform the digital signal into the analog voltage signal and output the analog voltage signal to the data line. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification