JP2001166743A5

JP2001166743A5 -

Info

Publication number: JP2001166743A5
Application number: JP1999347656A
Authority: JP
Filing date: 1999-12-07
Publication date: 2004-12-24
Anticipated expiration: 2019-12-07

Description

【発明の名称】電気光学装置のデータ線駆動装置及びこれを用いた電気光学装置、電子機器、及びデータ線駆動信号の位相調整装置、並びにデータ線駆動信号の位相調整方法The present invention relates to a data line drive device for an electro-optical device, an electro-optical device using the same, an electronic apparatus, a phase adjustment device for a data line drive signal, and a phase adjustment method for a data line drive signal.

【００１７】
本発明の第６の態様は前記態様１、２、３または４のいずれかの態様に記載の電気光学装置のデータ線駆動装置を備えることを特徴とする電子機器である。[0017]
A sixth aspect of the present invention is an electronic apparatus comprising the data line driving device of the electro-optical device according to any one of the aspects 1, 2, 3 or 4.

【００１９】
本発明の第７の態様は、画像信号が順次供給される複数のデータ線と、前記データ線と交差する複数の走査線と有し、前記複数のデータ線と前記複数の走査線の各交点に対応して配置されるマトリクス状の画素を駆動することにより表示を行う電気光学装置の駆動装置のデータ線制御信号の位相を調整する装置であって、（ａ）前記画像信号を前記データ線に順次供給するために前記データ線を走査する走査クロックと、前記データ線の走査を開始する走査開始信号と、前記画像信号を前記データ線に供給するタイミングを規定するイネーブル信号とを出力するタイミング信号出力手段と、（ｂ）前記タイミング信号出力手段から出力された前記走査クロックと前記イネーブル信号の位相を相互に調整可能な第１の調整手段と、前記第１の調整手段から出力される前記走査クロックと前記イネーブル信号の位相関係を維持したまま前記イネーブル信号と前記画像信号の位相を相互に調整可能な第２の調整手段とを有する位相調整手段と、（ｃ）前記位相調整手段から出力される前記走査クロックと前記走査開始信号とにより前記データ線を走査するための走査信号を作成するデータ線走査手段を有し、前記データ線走査手段からの前記走査信号の出力期間であってかつ前記イネーブル信号の出力期間に限定して前記データ線を活性状態にするためのデータ線駆動信号を出力するデータ線駆動手段と、（ｄ）前記データ線駆動手段からの前記データ線駆動信号に応じて前記画像信号を前記データ線に順次出力させるサンプリング手段と、を備えたことを特徴とする電気光学装置のデータ線駆動制御信号の位相調整装置である。
本発明の第８の態様は、画像信号が順次供給される複数のデータ線と、前記データ線と交差する複数の走査線と有し、前記複数のデータ線と前記複数の走査線の各交点に対応して配置されるマトリクス状の画素を駆動することにより表示を行う電気光学装置の駆動装置のデータ線制御信号の位相を調整する方法であって、前記画像信号を前記データ線に順次供給するために前記データ線を走査する走査クロックと、前記データ線の走査を開始する走査開始信号と、前記画像信号を前記データ線に供給するタイミングを規定するイネーブル信号とを作成するステップと、前記走査クロックと前記イネーブル信号の位相を調整するステップと、調整した前記走査クロックと前記イネーブル信号の相互の位相関係を維持したまま、前記イネーブル信号と前記画像信号の出力タイミングを調整するステップと、調整した前記イネーブル信号、前記走査クロック及び前記画像信号をデータ線を走査駆動するデータ線駆動手段に供給するステップと、を備えたことを特徴とする電気光学装置のデータ線駆動制御信号の位相調整方法である。[0019]
According to a seventh aspect of the present invention, there is provided a plurality of data lines to which an image signal is sequentially supplied, and a plurality of scanning lines intersecting the data lines, and each intersection of the plurality of data lines and the plurality of scanning lines A device for adjusting a phase of a data line control signal of a drive device of an electro-optical device which performs display by driving a matrix of pixels arranged corresponding to the data line; Clock for scanning the data line to sequentially supply the data, a scan start signal for starting scanning of the data line, and a timing for outputting an enable signal for defining the timing for supplying the image signal to the data line (B) first adjustment means capable of mutually adjusting the phases of the scanning clock and the enable signal output from the timing signal output means; (b) the first adjustment Phase adjusting means having second adjusting means capable of mutually adjusting the phases of the enable signal and the image signal while maintaining the phase relationship between the scanning clock and the enable signal output from the means; (c) A data line scanning unit for generating a scanning signal for scanning the data line based on the scanning clock output from the phase adjustment unit and the scanning start signal; and the scanning signal from the data line scanning unit Data line drive means for outputting a data line drive signal for activating the data line in an output period and limited to an output period of the enable signal; (d) the data line drive means And d) sampling means for sequentially outputting the image signal to the data line in accordance with the data line drive signal. A phase adjustment device of the line drive control signal.
According to an eighth aspect of the present invention, there is provided a plurality of data lines to which an image signal is sequentially supplied, and a plurality of scanning lines intersecting the data lines, and each intersection of the plurality of data lines and the plurality of scanning lines A method of adjusting a phase of a data line control signal of a driving device of an electro-optical device for performing display by driving matrix-like pixels arranged corresponding to the pixel, and sequentially supplying the image signal to the data line Creating a scan clock for scanning the data line, a scan start signal for starting the scan of the data line, and an enable signal for defining the timing of supplying the image signal to the data line; Adjusting the phase of the scanning clock and the enable signal; and maintaining the relative phase relationship between the adjusted scanning clock and the enable signal; And adjusting the output timing of the image signal, and supplying the adjusted enable signal, the scanning clock, and the image signal to data line driving means for scanning and driving the data line. Is a method of adjusting the phase of the data line drive control signal of the electro-optical device.

【００２０】
本発明の第７の態様及び本発明の第８の態様により、イネーブル信号とシフトクロックの位相関係が異常な場合であっても、まずイネーブル信号とシフトクロックの位相関係を調整し、その後その調整後のシフトクロックとイネーブル信号の位相関係を維持したままイネーブル信号と画像信号の位相を調整することが可能となり、制御信号全体の位相の適切な調整が可能となった。[0020]
According to the seventh aspect of the present invention and the eighth aspect of the present invention, even if the phase relationship between the enable signal and the shift clock is abnormal, first, the phase relationship between the enable signal and the shift clock is adjusted, and then the adjustment is performed. It becomes possible to adjust the phases of the enable signal and the image signal while maintaining the phase relationship between the shift clock and the enable signal later, and it becomes possible to properly adjust the phase of the entire control signal.

Claims

Pixels arranged in a matrix corresponding to a plurality of data lines to which image signals are sequentially supplied, a plurality of scanning lines crossing the data lines, and a plurality of data lines and a plurality of scanning lines. And a driving device of an electro-optical device for performing display by sequentially driving the pixels, and the data line driving device of the electro-optical device comprising the following elements.
(A) a scanning clock for scanning the data line to sequentially supply the image signal to the data line, a scanning start signal for starting scanning the data line, and a timing for supplying the image signal to the data line Timing signal output means for outputting an enable signal for defining
(B) a first adjusting unit capable of mutually adjusting the phases of the scanning clock and the enable signal output from the timing signal output unit; the scanning clock and the enable output from the first adjusting unit Phase adjusting means having second adjusting means capable of mutually adjusting the phases of the enable signal and the image signal while maintaining the phase relationship of the signals;
(C) data line scanning means for creating a scanning signal for scanning the data line according to the scanning clock and the scanning start signal output from the phase adjusting means, and the data from the data line scanning means Data line drive means for outputting a data line drive signal for activating the data line in an output period of a scanning signal and limited to an output period of the enable signal;
(D) sampling means for sequentially outputting the image signal to the data line in accordance with the data line drive signal from the data line drive means.

The first adjustment means of the phase adjustment means is a shift register provided for each of the input signals to be shifted in dot clock units for receiving the scanning clock or the enable signal and driving one unit of the pixel. And adjusting means capable of adjusting the timings of the scanning clock and the enable signal in dot clock units, and first selecting means capable of individually selecting an output stage of each shift register.
The second adjustment means is a shift register provided for each of the input signals to be shifted in units of dot clocks for receiving the scanning clock or the enable signal and driving one unit of the pixels, and the respective shifts. And a second selection means capable of simultaneously selecting a common output stage of the register, wherein the adjustment means can be adjusted in dot clock units while maintaining the timing of the scanning clock and the enable signal. A data line driving device of the electro-optical device according to claim 1.

The shift register of the first and second adjustment means is composed of a plurality of stages of flip-flops whose input terminal is connected to the scanning signal or the enable signal and whose positive output terminal is connected to the input terminal of the next stage. 3. The data line driving device of an electro-optical device according to claim 2, wherein the data line driving device is a shift register that operates with the dot clock.

The first adjustment means is an adjustment means capable of adjusting the mutual timing with the scan start signal in addition to the scan clock and the enable signal,
The second adjustment means outputs timings of the enable signal and the image signal while maintaining the respective phase relationships of the scanning clock, the enable signal, and the scan start signal output from the first adjustment means. 4. A data line drive apparatus for an electro-optical device according to claim 1, 2 or 3, wherein the data line drive apparatus is an adjustable means.

An electro-optical device comprising the data line driving device of the electro-optical device according to any one of claims 1, 2, 3 and 4.

An electronic apparatus comprising the data line driving device of the electro-optical device according to any one of claims 1, 2, 3 and 4.

A matrix having a plurality of data lines to which an image signal is sequentially supplied and a plurality of scanning lines intersecting the data lines, and arranged corresponding to respective intersections of the plurality of data lines and the plurality of scanning lines A device for adjusting the phase of a data line control signal of a driving device of an electro-optical device which performs display by driving pixels of
(A) a scanning clock for scanning the data line to sequentially supply the image signal to the data line, a scanning start signal for starting scanning the data line, and a timing for supplying the image signal to the data line Timing signal output means for outputting an enable signal for defining
(B) a first adjusting unit capable of mutually adjusting the phases of the scanning clock and the enable signal output from the timing signal output unit; the scanning clock and the enable output from the first adjusting unit Phase adjusting means having second adjusting means capable of mutually adjusting the phases of the enable signal and the image signal while maintaining the phase relationship of the signals;
(C) data line scanning means for creating a scanning signal for scanning the data line according to the scanning clock and the scanning start signal output from the phase adjusting means, and the data from the data line scanning means Data line drive means for outputting a data line drive signal for activating the data line in an output period of a scanning signal and limited to an output period of the enable signal;
(D) A data line drive control signal of an electro-optical device comprising: sampling means for sequentially outputting the image signal to the data line according to the data line drive signal from the data line drive means. Phase adjustment device.

A matrix having a plurality of data lines to which an image signal is sequentially supplied and a plurality of scanning lines intersecting the data lines, and arranged corresponding to respective intersections of the plurality of data lines and the plurality of scanning lines A method of adjusting a phase of a data line control signal of a driving device of an electro-optical device which performs display by driving a pixel of
(A) a scanning clock for scanning the data line to sequentially supply the image signal to the data line, a scanning start signal for starting scanning the data line, and a timing for supplying the image signal to the data line Creating an enable signal defining
(B) adjusting the phase of the scanning clock and the enable signal;
(C) adjusting output timings of the enable signal and the image signal while maintaining the relative phase relationship between the adjusted scanning clock and the enable signal;
(D) supplying the adjusted enable signal, the scanning clock, and the image signal to data line driving means for scanning and driving the data lines; data line driving control signal of electro-optical device Phase adjustment method.