Integrated circuit device, electro optical device and electronic apparatus
View Patent ↗An integrated circuit device includes: a data driver that drives a plurality of data lines of an electro optical device; and a data distribution circuit that supplies data to the data driver, wherein the data driver includes an odd numbered data line driver circuit for driving odd numbered data lines among the plurality of data lines, an even numbered data line driver circuit for driving even numbered data lines among the plurality of data lines, an odd numbered data line latch circuit provided for the odd numbered data line driver circuit, and an even numbered data line latch circuit provided for the even numbered data line driver circuit; and the data line distribution circuit, upon receiving time serially inputted image data, supplies odd numbered data line image data for the number of multiplexes to the odd numbered data line latch circuit, and supplies even numbered data line image data for the number of multiplexes to the even numbered data line latch circuit.
1. An integrated circuit device comprising: a data driver that drives a plurality of data lines of an electro optical device; and a data distribution circuit that supplies data to the data driver, wherein the data driver includes an odd numbered data line driver circuit for driving odd numbered data lines among the plurality of data lines, an even numbered data line driver circuit for driving even numbered data lines among the plurality of data lines, an odd numbered data line latch circuit provided for the odd numbered data line driver circuit, and an even numbered data line latch circuit provided for the even numbered data line driver circuit; and the data line distribution circuit, upon receiving time serially inputted image data, supplies odd numbered data line image data for the number of multiplexes to the odd numbered data line latch circuit, and supplies even numbered data line image data for the number of multiplexes to the even numbered data line latch circuit; wherein the odd number data line latch circuit latches the odd numbered data line image data, and supplies the odd numbered data line image data to the odd numbered data line driver circuit; the odd numbered data line driver circuit, upon receiving the odd numbered data line image data, outputs a multiplexed odd numbered data line data signal; the even numbered data line latch circuit latches the even numbered data line image data, and supplies the even numbered data line image data to the even numbered data line driver circuit; and
the even numbered data line driver circuit, upon receiving the even numbered data line image data, outputs a multiplexed even numbered data line data signal, wherein demultiplexed data signals obtained by demultiplexing the multiplexed odd numbered data line data signal by a demultiplexer are supplied to corresponding ones of the odd numbered data lines in one horizontal scanning period, and demultiplexed data signals obtained by demultiplexing the multiplexed even numbered data line data signal by the demultiplexer are supplied to corresponding ones of the even numbered data lines in one horizontal scanning period.
2. An integrated circuit device according to claim 1 , comprising a switch signal generation circuit that generates a demultiplex switch signal for ON/OFF controlling a plurality of demultiplex switching elements included in the demultiplexer.
3. An integrated circuit device according to claim 2 , wherein the data distribution circuit includes
a first latch circuit that latches the image data for at least four multiplexes with a multiphase clock, and
a second latch circuit having a first odd numbered data latch section that latches the odd numbered data line image data among the image data based on a first clock, and a first even numbered data latch section that latches the even numbered data line image data among the image data based on a second clock.
4. An integrated circuit device according to claim 3 , wherein the data distribution circuit includes a third latch circuit, wherein the third latch circuit includes a second odd numbered data latch section that latches data of the first odd numbered data latch section based on a third clock and supplies the data to the odd numbered data line latch circuit, and a second even numbered data latch section that latches data of the first even numbered data latch section based on the third clock, and supplies the data to the even numbered data line latch circuit.
5. An integrated circuit device according to claim 3 , wherein the data distribution circuit includes a dispersion switch circuit provided between the first latch circuit and the second latch circuit, wherein, when a dispersion mode is enabled, the dispersion switch circuit outputs the odd numbered data line image data among the image data to the first odd numbered data latch section, and the even numbered data line image data among the image data to the first even numbered data latch section.
6. An integrated circuit device according to claim 4 , wherein the data distribution circuit includes a shift direction switch circuit provided between the second latch circuit and the third latch circuit, wherein, in a first shift direction mode, the shift direction switch circuit outputs data of the first odd numbered data latch section to the second odd numbered data latch section and outputs data of the first even numbered data line latch section to the second even numbered data line latch section; and in a second shift direction mode, the shift direction switch circuit inverts the order of data of the first odd numbered data latch section and outputs the data to the second even numbered data line latch section, and inverts the order of data of the first even numbered data line latch section and outputs the data to the second odd numbered data latch section.
7. An integrated circuit device according to claim 3 , wherein the data distribution section includes a third latch circuit including a common latch section, wherein the common latch section latches data of the first odd numbered data latch section based on a third clock and supplies the data to the odd numbered data line latch circuit, and then latches data of the first even numbered data line latch section based on the third clock and supplies the data to the even numbered data line latch section.
8. An integrated circuit device according to claim 7 , wherein the data distribution circuit includes a shift direction switch circuit provided between the second latch circuit and the third latch circuit, wherein, in a first shift direction mode, the shift direction switch circuit outputs data of the first odd numbered data latch section to the common latch section, and then outputs data of the first even numbered data line latch section to the common latch section; and in a second shift direction mode, the shift direction switch circuit inverts the order of data of the first odd numbered data latch section and outputs the data to the common latch section, and then inverts the order of data of the first even numbered data line latch section and outputs the data to the common latch section.
9. An electro optical device comprising the integrated circuit device recited in claim 1 .
10. An electronic apparatus comprising the integrated circuit device recited in claim 1 .