Driving method for irradiating colors of a liquid crystal display device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorHiroyuki Miyake
Life of this patent
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Abstract
In the first range of a screen, an image signal is input to a plurality of pixels arranged in the first region, and next an image signal is input to a plurality of pixels arranged in the second region that is adjacent to one side of the first region, and light of the first color is delivered every time the input of the image signal is finished. Further, in the second range, an image signal is input to a plurality of pixels arranged in a fourth region; next, an image signal is input to a plurality of pixels arranged in a third region adjacent to the other side of the fourth region, and light of a second color is delivered every time the input of the image signal is finished.
Claims12
A driving method of a liquid crystal display device comprising a pixel portion comprising a plurality of pixels arranged in a matrix of m rows and n columns (m and n are natural numbers greater than or equal to 4), the driving method comprising the steps of:
- inputting a first image signal for a first color to the plurality of pixels in a first row;
- irradiating the plurality of pixels in the first row with light of the first color by switching a first light source from an off state to an on state and inputting a second image signal for the first color to the plurality of pixels in a second row at the same time after the step of inputting the first image signal;
- inputting a third image signal for a second color to the plurality of pixels in an (e+f−2k)-th row;
- and
- irradiating the plurality of pixels in the (e+f−2k)-th row with light of the second color by switching a second light source from an off state to an on state and inputting a fourth image signal for the second color to the plurality of pixels in an (e+f−2k−1)-th row at the same time after the step of inputting the third image signal,
- inputting a fifth image signal for the first color to the plurality of pixels in an (e+f+1)-th row;
- irradiating the plurality of pixels in the (e+f+1)-th row with light of the first color by switching a third light source from an off state to an on state and inputting a sixth image signal for the first color to the plurality of pixels in an (e+f+2)-th row at the same time after the step of inputting the fifth image signal,
- wherein the pixel portion comprises a first range comprising a plurality of pixels arranged in a matrix of e rows and n columns,
- wherein the pixel portion comprises a second range comprising a plurality of pixels arranged in a matrix of f rows and n columns,
- wherein the pixel portion comprises a third range comprising a plurality of pixels arranged in a matrix of (m−e−f) rows and n columns,
- wherein k is less than e/2 and a multiple of 4,
- wherein image signals for the first color are sequentially supplied to the rows in descending order by one row in the first range,
- wherein image signals for the second color are sequentially supplied to the rows in ascending order by one row in the second range,
- wherein image signals for the first color are sequentially supplied to the rows in descending order by one row in the third range,
- wherein the switching of the first light source and the switching of the second light source are performed at a same time, and
- wherein the first color is different from the second color.
A driving method of a liquid crystal display device comprising a pixel portion comprising a plurality of pixels arranged in a matrix of m rows and n columns (m and n are natural numbers greater than or equal to 4), the driving method comprising the steps of:
- inputting a first image signal for a first color to the plurality of pixels in a first row;
- irradiating the plurality of pixels in the first row with light of the first color by switching a first light source from an off state to an on state and inputting a second image signal for the first color to the plurality of pixels in a second row after the step of inputting the first image signal;
- inputting a third image signal for a second color to the plurality of pixels in an (e+f−2k)-th row;
- and
- irradiating the plurality of pixels in the (e+f−2k)-th row with light of the second color by switching a second light source from an off state to an on state and inputting a fourth image signal for the second color to the plurality of pixels in an (e+f−2k−1)-th row after the step of inputting the third image signal,
- inputting a fifth image signal for the first color to the plurality of pixels in an (e+f+1)-th row;
- irradiating the plurality of pixels in the (e+f+1)-th row with light of the first color by switching a third light source from an off state to an on state and inputting a sixth image signal for the first color to the plurality of pixels in an (e+f+2)-th row after the step of inputting the fifth image signal,
- wherein the pixel portion comprises a first range comprising a plurality of pixels arranged in a matrix of e rows and n columns,
- wherein the pixel portion comprises a second range comprising a plurality of pixels arranged in a matrix of f rows and n columns,
- wherein the pixel portion comprises a third range comprising a plurality of pixels arranged in a matrix of (m−e−f) rows and n columns,
- wherein k is less than e/2 and a multiple of 4,
- wherein image signals for the first color are sequentially supplied to the rows in descending order by one row in the first range,
- wherein image signals for the second color are sequentially supplied to the rows in ascending order by one row in the second range,
- wherein image signals for the first color are sequentially supplied to the rows in descending order by one row in the third range,
- wherein the switching of the first light source, the switching of the second light source and the switching of the third light source are performed at a same time, and
- wherein the first color is different from the second color.
Dependencies are inferred from the claim text.