ELECTRO-OPTICAL DEVICE, METHOD OF DRIVING ELECTRO-OPTICAL DEVICE, DRIVING CIRCUIT, AND ELECTRONIC APPARATUS

Abstract

A method of driving an electro-optical device having a plurality of pixels which are formed to correspond to intersections between a plurality of scan lines and a plurality of data lines and each of which exhibits a grayscale of output light corresponding to a data signal sampled and supplied to the corresponding data line when the corresponding scan line is selected is provided. The method includes: selecting the plurality of scan lines in a predetermined order; dividing a period of time, when one of the scan lines is selected, into a first period and a second period; selecting m (where m is an integer greater than or equal to 2) lines from one of an odd group and an even group consisting of odd-numbered and even-numbered data lines, respectively, in the first period; selecting m data lines from the other of the odd group and the even group of data lines in the second period; and sampling data signals supplied to m image signal lines and supplying the sampled data signals to the selected m data lines.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram showing an entire structure of an electro-optical device according to a first embodiment of the invention.

FIG. 2 is block diagram showing a structure of a display panel in the electro-optical device.

FIG. 3 is diagram showing a structure of a pixel in the display panel.

FIG. 4 is a diagram showing a structure of a shift register group in the display panel.

FIG. 5 is a diagram showing a structure of a data line selection circuit in the display panel.

FIG. 6 is a timing diagram for explaining an operation of a vertical scanning in the electro-optical device.

FIG. 7 is a timing diagram for explaining an operation of a horizontal scanning in the electro-optical device.

FIG. 8 is a timing diagram for explaining an operation of writing data signals in the electro-optical device.

FIG. 9 is a timing diagram for explaining an operation of writing data signals in the electro-optical device.

FIG. 10 is a diagram for explaining a writing operation in the electro-optical device.

FIG. 11 is a diagram showing a written state in the electro-optical device.

FIG. 12 is a timing diagram for explaining an operation or a horizontal scanning according to a second embodiment of the invention.

FIG. 13 is a diagram for explaining signals related to the second embodiment.

FIG. 14 is a diagram for explaining a signal state related to the second embodiment.

FIGS. 15A and 15B are diagrams for explaining signals related to a third embodiment of the invention.

FIGS. 16A and 16B are diagrams showing a written state related to the third embodiment.

FIG. 17 is a diagram for explaining a writing operation according to a fourth embodiment.

FIG. 18 is a diagram for explaining a writing operation according to the fourth embodiment.

FIGS. 19A and 19B are diagrams showing a written state related to the fourth embodiment.

FIG. 20 is a timing diagram for explaining an operation of a vertical scanning according to a fifth embodiment.

FIG. 21 is a diagram for explaining a writing operation related to the fifth embodiment.

FIG. 22 is a diagram for explaining a writing operation related to the fifth embodiment.

FIGS. 23A and 23B are diagrams showing a written state related to the fifth embodiment.

FIG. 24 is a diagram showing a structure of another example of a shift register group.

FIG. 25 is a diagram for explaining an operation of a horizontal scanning when the shifter register group is used.

FIG. 26 is a diagram for explaining an operation of a horizontal scanning when the shifter register group is used.

FIG. 27 is a diagram for explaining a writing operation according to a modified embodiment.

FIG. 28 is a diagram showing a written state related to the modified embodiment.

FIG. 29 is a diagram showing a structure of a projector to which the elector-optical device is applied.

FIG. 30 is a diagram for explaining a writing operation according to a known art.

FIG. 31 is a diagram showing a written state related to the known art.

Claims

1. A method of driving an electro-optical device having a plurality of pixels which are formed to correspond to intersections between a plurality of scan lines and a plurality of data lines and each of which exhibits a grayscale of output light corresponding to a data signal sampled and supplied to the corresponding data line when the corresponding scan line is selected, the method comprising: selecting the plurality of scan lines in a predetermined order;dividing a period of time, when one of the scan lines is selected, into a first period and a second period;selecting m (where m is an integer greater than or equal to 2) lines from one of an odd group and an even group consisting of odd-numbered and even-numbered data lines, respectively, in the first period;selecting m data lines from the other of the odd group and the even group of data lines in the second period; andsampling data signals supplied to m image signal lines and supplying the sampled data signals to the selected m data lines.

2. The method according to claim 1, wherein the plurality of data lines are divided into blocks to form blocks each consisting of 2m data lines, the blocks are sequentially specified in each of the first and second periods,m data lines are selected from one of an odd group and an even group consisting of odd-numbered and even-numbered data lines, respectively, belonging to the specified block in the first period, andm data lines are selected from the other of the odd group and the even group consisting of odd-numbered and even-numbered data lines, respectively, belonging to the specified block in the second period.

3. The method according to claim 1, wherein m odd-numbered data lines are selected in a first period of a period of time when one scan line is selected and m even-numbered data lines are selected in a second period thereof, and wherein m even-numbered data lines are selected in a first period of a period of time when a scan line next to the one scan line is selected and m odd-numbered data lines are selected in a second period thereof.

4. The method according to claim 1, wherein m odd-numbered data lines are selected in a first period of one vertical scanning period and m even-numbered data lines are selected in a second period thereof, and wherein m even-numbered data lines are selected in a first period of a vertical scanning period next to the one vertical scanning period and m odd-numbered data lines are selected in a second period thereof.

5. The method according to claim 1, wherein in one vertical scanning period, m odd-numbered data lines are selected in a first period of a period of time when an odd-numbered scan line is selected, m even-numbered data lines are selected in a second period thereof, m even-numbered data lines are selected in a first period of a period of time when an even-numbered scan line next to the selected odd-numbered scan line is selected, and m odd-numbered data lines are selected in a second period thereof, andwherein in a vertical scanning period next to the one vertical scanning period,m even-numbered data lines are selected in a first period of a period of time when an odd-numbered scan line is selected, m odd-numbered data lines are selected in a second period thereof, m odd-numbered data lines are selected in a first period of a period of time when an even-numbered scan line next to the selected odd-numbered scan line is selected, and m even-numbered data lines are selected in a second period thereof.

6. The method according to claim 1, wherein the plurality of scan lines are divided into at least a first group and a second group in the arrangement direction of the scan lines, a vertical scanning period is divided into at least first and second fields; the scan lines belonging to the first and second groups are selected in turn and sequentially in a predetermined direction in each of the first and second fields.

7. The method according to claim 6, wherein in the first field, the voltage of the data signal is one of a high potential and a low potential with respect to a predetermined potential, and wherein in the second field, the voltage of the data signal is the other of the high potential and the low potential.

8. The method according to claim 6, wherein in one vertical scanning period, m odd-numbered data lines are selected in a first period of a period of time when one scan line belonging to the first group is selected and m even-numbered data lines are selected in a second period thereof,m odd-numbered data lines are selected in a first period of a period of time when one scan line belonging to the second group is selected and m even-numbered data lines are selected in a second period thereof,m even-numbered data lines are selected in a first period of a period of time when a scan line next to the one scan line belonging to the first group is selected and m odd-numbered data lines are selected in a second period thereof, andm even-numbered data lines are selected in a first period of a period of time when a scan line next to the one scan line belonging to the second group is selected and m odd-numbered data lines are selected in a second period thereof, andwherein in a vertical scanning period next to the one vertical scanning period,m even-numbered data lines are selected in a first period of a period of time when one scan line belonging to the first group is selected and m odd-numbered data lines are selected in a second period thereof,m even-numbered data lines are selected in a first period of a period of time when one scan line belonging to the second group is selected and m odd-numbered data lines are selected in a second period thereof,m odd-numbered data lines are selected in a first period of a period of time when a scan line next to the one scan line belonging to the first group is selected and m even-numbered data lines are selected in a second period thereof, andm odd-numbered data lines are selected in a first period of a period of time when a scan line next to the one scan line belonging to the second group is selected and m even-numbered data lines are selected in a second period thereof.

9. A method of driving an electro-optical device having a plurality of pixels which are formed to correspond to intersections between a plurality of scan lines and a plurality of data lines and each of which exhibits a grayscale of output light corresponding to a data signal sampled and supplied to the corresponding data line when the corresponding scan line is selected, the method comprising: selecting the plurality of scan lines in a predetermined order;dividing the plurality of data lines into blocks so as to form blocks each consisting of two data lines and dividing a period of time, when one of the scan lines is selected, into a first period and a second period;sequentially selecting one of odd blocks and even blocks consisting of odd-numbered and even-numbered data lines, respectively, and selecting two data lines belonging to the selected block in the first period;sequentially selecting the other of the odd blocks and the even blocks and selecting two data lines belonging to the selected block in the second period; andsampling data signals supplied to two image signal lines and supplying the sampled data signals to the selected two data lines.

10. A driving circuit of an electro-optical device having a plurality of pixels which are formed to correspond to intersections between a plurality of scan lines and a plurality of data lines and each of which exhibits a grayscale of output light corresponding to a data signal sampled and supplied to the corresponding data line when the corresponding scan line is selected, the driving circuit comprising: a scan line driving circuit selecting the plurality of scan lines in a predetermined order; anda data line driving circuit dividing a period of time, when one of the scan lines is selected, into a first period and a second period; selecting m (where m is an integer greater than or equal to 2) lines from one of an odd group and an even group consisting of odd-numbered and even-numbered data lines, respectively, in the first period; selecting m data lines from the other of the odd group and the even group of data lines in the second period; and sampling data signals supplied to m image signal lines and supplying the sampled data signals to the selected m data lines.

11. An electro-optical device comprising the driving circuit of an electro-optical device according to claim 10.

12. An electronic apparatus comprising the electro-optical device according to claim 11.