CN109599072B - Display device, driving method and display - Google Patents
Display device, driving method and display Download PDFInfo
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- CN109599072B CN109599072B CN201811546993.7A CN201811546993A CN109599072B CN 109599072 B CN109599072 B CN 109599072B CN 201811546993 A CN201811546993 A CN 201811546993A CN 109599072 B CN109599072 B CN 109599072B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000003086 colorant Substances 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 11
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 238000009826 distribution Methods 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3614—Control of polarity reversal in general
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
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Abstract
The invention discloses a display device, a driving method and a display. The display device includes: a plurality of scan driving lines arranged in a first direction; a plurality of data driving lines arranged in a second direction; a plurality of pixel units, each pixel unit including three sub-pixels; each pixel unit is connected with a data driving line, three scanning driving lines and a data driving circuit for outputting driving voltage to the sub-pixels; in three adjacent sub-pixels along the same direction, the polarities of the driving voltages of two adjacent sub-pixels are the same, and the polarity of the driving voltage of the remaining sub-pixel is different from that of the driving voltages of the other two sub-pixels. A display device which can display black and white straight bar figure or red, green and blue pure color is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device, a driving method and a display.
Background
With the development and progress of science and technology, the lcd has thin body, low power consumption, low radiation, and other hot spots, and thus is the mainstream product of the lcd and widely used. Most of the existing liquid crystal displays in the market are backlight liquid crystal displays (lcds), which include a liquid crystal panel and a backlight module (backlight module). The liquid crystal panel has the working principle that liquid crystal molecules are placed in two parallel glass substrates, and a driving voltage is applied to the two glass substrates to control the rotation direction of the liquid crystal molecules so as to refract light rays of the backlight module out to generate a picture.
Common panel driving architectures can be divided into several categories, for example, a middle-low specification panel can carry a simpler driving manner of 1D1G (one pixel has a corresponding scan line and a corresponding data line); if the Gate driving chip is changed into a GOA circuit (Gate driver on array) design, the cost of the Gate driving chip is saved; in addition, the driving mode of 1D1G (one pixel has one corresponding scan line and one corresponding data line) is changed into three-row driving (TRDTri-row drive), three times of scanning driving lines are used, and two adjacent rows of sub-pixels are independent or share the same scanning driving line, so that only 1/3 data driving chips are needed, and the cost is greatly reduced. However, as the requirements for panel size, resolution and large-view image quality increase, the requirements for image quality are also higher, and conventionally, in consideration of cost, a driving method of column inversion (column inversion) or frame inversion (frame inversion) is often adopted as a pixel signal providing method. Considering the picture display, the three-line driving method is easy to generate vertical crosstalk (crosstalk) due to different polarities of left and right signals of pixels under the field inversion, but if the frame inversion is used, the whole-plane polarity arrangement is easy to generate the same polarity, the polarity inversion is not performed until the next frame, human eyes can obviously feel bright and dark flicker (flicker) due to slight difference of positive and negative polarities, and the flicker is easy to occur when displaying black and white straight line graphics or pure color display of three primary colors of red, green and blue.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a display device, a driving method and a display device for improving flicker when displaying black and white bar patterns or pure colors of red, green and blue.
To achieve the above object, the present invention provides a display device including a plurality of scan driving lines arranged in a first direction; a plurality of data driving lines arranged in a second direction; a plurality of pixel units, each pixel unit including three sub-pixels; each pixel unit is connected with one data driving line, three scanning driving lines and a data driving circuit for outputting driving voltage to the sub-pixels; in three adjacent sub-pixels along the same direction, the polarities of the driving voltages of two adjacent sub-pixels are the same, and the polarity of the driving voltage of the remaining sub-pixel is different from that of the driving voltages of the other two sub-pixels.
Optionally, in three adjacent sub-pixels along the first direction, two adjacent sub-pixels have the same driving voltage polarity, the remaining one sub-pixel has a different driving voltage polarity from the other two sub-pixels, and the sub-pixels along the second direction maintain the same driving voltage polarity.
Optionally, in three adjacent sub-pixels along the first direction, the polarities of the driving voltages of two adjacent sub-pixels are the same, and the polarity of the driving voltage of the remaining one sub-pixel is different from the polarities of the driving voltages of the other two sub-pixels; at least one of the sub-pixels along the second direction has a different polarity from the driving voltages of the other sub-pixels.
Optionally, in three adjacent sub-pixels along the second direction, the polarities of the driving voltages of two adjacent sub-pixels are the same, and the polarity of the driving voltage of the remaining one sub-pixel is different from the polarities of the driving voltages of the other two sub-pixels; the polarities of the two adjacent sub-pixels along the first direction are different.
Optionally, the same data driving line only supplies power to the sub-pixels in the same column.
Optionally, the polarities of the driving voltages of any two adjacent columns of the sub-pixels in the odd columns are opposite, and the driving voltages of the sub-pixels in the even columns of the adjacent two columns are kept consistent.
Optionally, the same data driving line supplies power to the sub-pixels in two adjacent columns in a staggered manner.
Optionally, the colors of the sub-pixels along the second direction are different from each other, and the colors of the sub-pixels along the first direction are the same.
The invention also provides a driving method of a display device, which is characterized in that the display device comprises a plurality of scanning driving lines arranged along a first direction; a plurality of data driving lines arranged in a second direction; a plurality of pixel units, each pixel unit including three sub-pixels; each pixel unit is connected with one data driving line and three scanning driving lines;
the driving method includes:
applying gating signals on the scanning line along a first direction in sequence;
respectively applying driving voltages to the data lines;
wherein within the same picture frame;
in three adjacent sub-pixels along the same direction, the polarities of the driving voltages of two adjacent sub-pixels are the same, and the polarity of the driving voltage of the remaining sub-pixel is different from that of the driving voltages of the other two sub-pixels.
The invention also discloses a display which comprises the backlight module and any one of the display devices.
In contrast to the Tri-row drive trd method, the column inversion (column inversion) or frame inversion (frame inversion) driving method is commonly used as the pixel signal providing method for other display devices. In consideration of image display, vertical crosstalk (crosstalk) is easily generated due to different polarities of left and right signals of a pixel in a three-row drive (Tri-row drive trd) mode under column inversion, but if frame inversion is used, the polarity inversion is easily generated on the whole surface and arranged in the same polarity until the next frame, human eyes can obviously feel bright and dark flicker (flicker) due to slight difference of positive and negative polarities, and flicker is easily generated when black and white straight line images or three-primary-color pure color display is displayed.
The scheme provides that under the mode of matching the different polarity giving modes of the sub-pixels with three-row drive (Tri-row drive TRD), the occurrence degree of brightness and dark flicker and crosstalk of the whole surface can be reduced under the condition of displaying the same picture, and particularly, when a black-white straight bar graph is displayed or pure three primary colors are displayed, the image value of a panel is effectively improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic diagram of a pixel polarity arrangement according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a black and white bar display according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a black and trichromatic pure color bar chart according to one embodiment of the present invention;
FIG. 4 is a schematic diagram of another pixel polarity arrangement according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a black and white bar display according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a black and trichromatic pure color bar chart according to one embodiment of the present invention;
FIG. 7 is a schematic diagram of another pixel polarity arrangement according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a black and trichromatic pure color bar chart according to one embodiment of the present invention;
FIG. 9 is a schematic diagram of another pixel polarity arrangement according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a black and white bar display according to an embodiment of the present invention;
FIG. 11 is a schematic representation of a black and trichromatic pure color bar chart according to one embodiment of the present invention;
FIG. 12 is a schematic diagram of a display according to an embodiment of the invention;
FIG. 13 is a flowchart illustrating steps of a driving method according to an embodiment of the present invention.
100, a display device; 110. scanning the driving line; 120. a data driving line; 130. a pixel unit; 140. a first direction (row); 150. a second direction (column); 160. a drive voltage; 170. a sub-pixel; 180. a dark color region; 190. a bright color zone; 200. a display; 300. a backlight module is provided.
Detailed Description
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present application. This application may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, it is to be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The invention is further described with reference to the drawings and the preferred embodiments.
As shown in fig. 1 to 11, an embodiment of the invention discloses a display device 100, including a plurality of scan driving lines 110 arranged along a first direction 140; a plurality of data driving lines 120 arranged in a second direction 150; a plurality of pixel units 130, each pixel unit 130 including three sub-pixels 170; each pixel unit 130 is connected with one data driving line 120 and three scanning driving lines 110 and a data driving circuit for outputting driving voltages to the sub-pixels 170; among three adjacent sub-pixels 170 in the same direction, the polarities of the driving voltages of the adjacent two sub-pixels 170 are the same, and the polarity of the driving voltage of the remaining one sub-pixel 170 is different from the polarities of the driving voltages of the other two sub-pixels 170.
In this scheme, two adjacent rows of sub-pixels 170 independently or share one data driving line 120, so that only one third of the number of data driving chips is needed, thereby greatly reducing the cost. Under the driving mode, the pixel arrangement displays the condition of different polarities, when the next frame is displayed, the sub-pixel 170 arrangement can still display the distribution of different polarities, so that the occurrence degree of brightness and dark flicker and crosstalk of the whole surface can be avoided when the same picture is displayed, and particularly, the image quality of the panel is effectively improved when black and white straight-bar images are displayed or pure three primary colors are displayed. The pixel unit 130 includes a first pixel, a second pixel and a third pixel, which correspond to three colors, red, green and blue, respectively. Here, the color arrangement order is not limited.
As shown in fig. 1 and fig. 4, in an alternative embodiment, in three adjacent sub-pixels 170 along the first direction 140, the polarities of the driving voltages of two adjacent sub-pixels 170 are the same, the polarity of the driving voltage of the remaining one sub-pixel 170 is different from the polarities of the driving voltages of the other two sub-pixels 170, and the polarities of the driving voltages along the second direction are maintained to be the same.
In this embodiment, a three-row driving method (Tri-row driver trd) is mainly installed, and a polarity giving method of different driving voltages of the signal lines is adopted, so that the sub-pixels 170 have different polarity arrangement distributions. As shown in fig. 1, in the first direction, the three adjacent sub-pixel polarities arranged from left to right include four ways of "+ -" "- + + + + -", and "+ + -". The polarity of the driving voltage for the sub-pixels 170 in each column 150 in the second direction, i.e., the vertical direction, is the same. Because each row is independent or shares one data driving line 120 in a three-row drive (Tri-row drive trd) mode, and each row 150 maintains the same polarity of the driving voltage, the power saving effect can be achieved, the complexity of the driving routing is reduced, the damage of the common circuit is effectively reduced, and the durability is higher.
In such an arrangement, when displaying black and white bar patterns as shown in fig. 2 and displaying red, green and blue pure colors as shown in fig. 3, the adjacent sub-pixels 170 are displayed with different polarities, and when displaying the next frame, the adjacent sub-pixels 170 are still displayed with different polarities, so that the difference of brightness and darkness of each frame can be avoided, and the flicker of the image can be improved.
In this embodiment, a three-row driving method (Tri-row driver trd) is mainly installed, and a polarity giving method of different driving voltages of the signal lines is adopted, so that the sub-pixels 170 have different polarity arrangement distributions. As shown in fig. 4, in the first direction, the three adjacent sub-pixel polarities arranged from left to right include four ways of "+ -" "- + + + + -", and "+ + -". The polarity of the driving voltage for the sub-pixels 170 in each column 150 in the second direction, i.e., the vertical direction, is the same. Because each row is independent or shares one data driving line 120 in a three-row drive (Tri-row drive trd) mode, and each row 150 maintains the same polarity of the driving voltage, the power saving effect can be achieved, the complexity of the driving routing is reduced, the damage of the common circuit is effectively reduced, and the durability is higher.
In such an arrangement, when displaying black and white bar patterns as shown in fig. 5 and displaying red, green and blue pure colors as shown in fig. 6, the adjacent sub-pixels 170 are displayed with different polarities, and when displaying the next frame, the adjacent sub-pixels 170 are still displayed with different polarities, so that the difference of brightness and darkness of each frame can be avoided, and the flicker of the image can be improved.
As shown in fig. 7 and fig. 9, in this embodiment, optionally, in three adjacent sub-pixels along the first direction, the polarities of the driving voltages of two adjacent sub-pixels are the same, and the polarity of the driving voltage of the remaining one sub-pixel is different from the polarities of the driving voltages of the other two sub-pixels; at least one of the sub-pixels along the second direction has a different polarity from the driving voltages of the other sub-pixels.
In this embodiment, the polarities of the sub-pixels 170 in each column 150 in the second direction 150, i.e., the vertical direction, are not consistent, and each column 150 has at least one sub-pixel 170 with the opposite polarity of the driving voltage; and in the first direction, i.e. the row direction, for every two sub-pixels 170 with the same polarity and adjacent to each other, there is one sub-pixel 170 with a polarity different from the polarity of the driving voltage of the two sub-pixels 170; that is, in the first direction, the three adjacent sub-pixel polarities arranged from left to right include "+ -" "+ + + + -", and "+ + + -".
Therefore, the sub-pixels 170 are arranged and displayed in different polarities, and when the next frame is displayed, the sub-pixels 170 are still arranged and displayed in different polarity distributions, so that the difference of brightness in each frame can be avoided, and the flicker of the image can be improved, as shown in fig. 8.
As shown in fig. 1 to 7, in an alternative embodiment, the same data driving line 120 only supplies power to the sub-pixels 170 in the same column 150.
In this embodiment, the sub-pixels 170 in the same row 150 share one data driving line 120, which can reduce the number of circuit wires in the display device 100, reduce the cost of integrated circuits, and increase the pixel density of the display device.
As shown in fig. 9, in this embodiment, the polarities of the driving voltages of any two adjacent columns of the odd-numbered columns of the sub-pixels 170 are opposite, and the polarities of the driving voltages of two adjacent columns of the even-numbered columns of the sub-pixels 170 are kept consistent.
In this scheme, the first pixel has the same polarity of the driving voltages of two adjacent sub-pixels 170 along the first direction 140, i.e. the horizontal direction, and the remaining one sub-pixel 170 has a different polarity from the driving voltages of the other two sub-pixels 170, so that the sub-pixels 170 have different polarity arrangement distribution to reduce flicker; the second direction 150 is a row direction, and the polarities of the driving voltages of the sub-pixels 170 in every other row are consistent, so that the power saving effect is achieved; therefore, the polarities of the driving voltages of any two adjacent columns of the odd-numbered columns of the sub-pixels 170 are opposite, and the sub-pixels 170 of the two adjacent columns and the even-numbered columns maintain a consistent arrangement mode, so that the problem of flicker during display of the display device is solved, electricity is saved, and the durability of the integrated circuit is enhanced.
As shown in fig. 9, in an alternative embodiment, the same data driving line 120 staggers power supply to the sub-pixels 170 in two adjacent columns.
In the scheme, the change of the pixel space layout is utilized, namely every other column 150 in the vertical direction is transversely staggered by one row 140 to charge the sub-pixels 170, signals of two adjacent sub-pixels 170 up and down are provided by different scanning lines, the layout mode of the sub-pixels 170 and the polarity giving mode of the driving voltage are shown in fig. 8, the structural design is simple, meanwhile, the circuit arrangement space is increased, the heat dissipation performance of the integrated circuit is better, in addition, the staggered connection is adopted, the staggered pre-charging is carried out on the same pixel electrode, and the polarity reversal time is effectively saved.
Optionally, in this embodiment, the colors of the sub-pixels along the second direction are different from each other, and the colors of the sub-pixels along the first direction are the same.
In the scheme, in the first direction, that is, in a row of the same color, every two sub-pixels 170 with the same polarity and adjacent to each other in the same color have a polarity of the driving voltage of one sub-pixel 170 different from that of the two sub-pixels 170; the colors of the adjacent pixels in the second direction are different from each other, and the adjacent pixels are respectively arranged in sequence from top to bottom in red, blue and green; under the driving method of 1D3G, since the power consumption of the source driver is reduced, the color arrangement needs to be different in the column direction and consistent in the row direction; even if the driving mode loss of the display panel is reduced, the flickering picture can be improved when black and white straight bars and RGB three primary colors are displayed. Here, the color and polarity arrangement are not fixed, and the color and polarity arrangement order may be relatively adjusted when the display panel is applied to 1D1G or other driving methods, and the color arrangement in the column direction may also be BGR, GBR, etc., which is not limited herein.
As shown in fig. 7, in an alternative embodiment, in three adjacent sub-pixels 170 along the second direction 150, the polarities of the driving voltages of the adjacent two sub-pixels 170 are the same, and the polarity of the driving voltage of the remaining one sub-pixel 170 is different from the polarities of the driving voltages of the other two sub-pixels 170.
In the scheme, the polarities of the driving voltages between adjacent rows are different, the polarities of the driving voltages of the sub-pixels 170 in two adjacent rows are the same, and then the polarities of the driving voltages of the sub-pixels 170 in the next two rows are different from those of the sub-pixels 170 in the first two rows, so that the sub-pixels 170 are arranged and displayed in different polarities.
As another embodiment of the present invention, referring to fig. 1 to 11, a display device 100 includes:
as shown in fig. 9, a plurality of scan driving lines 110 arranged in a first direction 140; a plurality of data driving lines 120 arranged in a second direction 150; a plurality of pixel units 130, each pixel unit 130 including three sub-pixels 170; each pixel unit 130 is connected with one data driving line 120 and three scanning driving lines 110 and a data driving circuit for outputting driving voltages to the sub-pixels 170; among three adjacent sub-pixels 170 in the same direction, the polarities of the driving voltages of the adjacent two sub-pixels 170 are the same, and the polarity of the driving voltage of the remaining one sub-pixel 170 is different from the polarities of the driving voltages of the other two sub-pixels 170.
The same data driving line 120 supplies power to the sub-pixels 170 in two adjacent columns in a staggered manner, that is, every other column in the vertical direction is staggered in a row in a transverse manner to charge the sub-pixels 170, and signals of two adjacent sub-pixels 170 are provided by different scanning lines.
In the same color, for every two adjacent sub-pixels 170 with the same polarity of the driving voltage, one sub-pixel 170 has a different polarity from the two sub-pixels 170, and the adjacent sub-pixels 170 are displayed with different polarities, and when the next frame is displayed, the adjacent sub-pixels 170 are still displayed with different polarities, so that the difference of brightness and darkness in each frame can be avoided, and the flicker of the picture can be improved. And each row 150 maintains the same polarity of the driving voltage, so that the effect of power saving can be achieved, the complexity of driving wiring is reduced, the damage of a common circuit is effectively reduced, and the durability is higher.
The same data driving line 120 supplies power to the sub-pixels 170 in two adjacent columns in a staggered manner; then, the polarity of the driving voltage of any two adjacent columns 150 of the odd-numbered columns of the sub-pixels 170 is opposite, and the polarities of the sub-pixels 170 in the two adjacent columns are consistent. The arrangement mode is close to the point inversion mode, so that the flicker condition is not easy to be distinguished by naked eyes; second, the power is supplied in a staggered manner, and the sub-pixels 170 in one row are horizontally staggered in every other row for pre-charging, so that the time for polarity inversion of the driving voltage is reduced and power is saved.
As another embodiment of the present invention, referring to fig. 13, a driving method of a display device 100 includes:
the display device includes a plurality of scanning driving lines arranged along a first direction; a plurality of data driving lines arranged in a second direction; a plurality of pixel units, each pixel unit including three sub-pixels; each pixel unit is connected with one data driving line and three scanning driving lines;
the driving method includes:
applying gating signals on the scanning line along a first direction in sequence;
respectively applying driving voltages to the data lines;
wherein within the same picture frame;
in three adjacent sub-pixels along the same direction, the polarities of the driving voltages of two adjacent sub-pixels are the same, and the polarity of the driving voltage of the remaining sub-pixel is different from that of the driving voltages of the other two sub-pixels.
As another embodiment of the invention, referring to fig. 1 to 12, a display 200 includes a backlight module 300 and any one of the display devices 100 described above.
By using the three-line driving method and the polarity giving method of different driving voltages of the sub-pixels 170, the occurrence degree of bright and dark flicker and crosstalk on the whole can be reduced when the same picture is displayed, the image quality of the panel can be effectively improved, and the flicker caused by displaying black and white straight-bar images or pure color display of three primary colors of red, green and blue can be avoided.
Compared with other polarity giving modes with different driving voltages, two adjacent rows of sub-pixels 170 independently share one data driving line 120, so that only one third of the data driving chips are needed, and the cost is greatly reduced. Under the driving mode, the pixel arrangement is displayed in the condition of different polarities, so that the image quality of the panel can be effectively improved when black and white straight-bar graphs are displayed or three primary colors are displayed.
It should be noted that, the limitations of the steps involved in the present disclosure are not considered to limit the order of the steps without affecting the implementation of the specific embodiments, and the steps written in the foregoing may be executed first, or executed later, or even executed simultaneously, and as long as the present disclosure can be implemented, all should be considered to belong to the protection scope of the present disclosure.
The technical scheme of the invention can be widely applied to flat panel displays such as Thin Film Transistor-Liquid Crystal displays (TFT-LCDs) and Organic Light-Emitting diodes (OLED) displays.
The panel of the present invention may be a TN panel (referred to as Twisted Nematic panel), an IPS panel (In-plane switching), a VA panel (Multi-domain vertical alignment technology), or other types of panels, and is applicable.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (4)
1. A display device, comprising:
a plurality of scanning driving lines arranged in a first direction;
a plurality of data driving lines arranged in a second direction;
a plurality of pixel units, each pixel unit including three sub-pixels;
a data driving circuit for outputting a driving voltage to the sub-pixels;
each pixel unit is connected with one data driving line and three scanning driving lines;
in three adjacent sub-pixels along the first direction, the polarities of the driving voltages of two adjacent sub-pixels are the same, and the polarity of the driving voltage of the remaining one sub-pixel is different from the polarities of the driving voltages of the other two sub-pixels; the sub-pixels along the second direction maintain consistent driving voltage polarity;
the polarities of the driving voltages output by any two adjacent columns of the sub-pixels in the odd columns are opposite, and the polarities of the driving voltages output by the sub-pixels in the even columns of the adjacent columns are opposite;
and the sub-pixels in the even columns along the second direction maintain consistent voltage, and the driving voltage of at least one sub-pixel in the sub-pixels in the odd columns along the second direction is different from the driving voltage of other sub-pixels in the odd columns.
2. The display device according to claim 1,
the sub-pixel colors along a second direction are different from each other;
the sub-pixels along the first direction are the same color.
3. A driving method of a display device, the display device comprising:
a plurality of scanning driving lines arranged in a first direction;
a plurality of data driving lines arranged in a second direction;
a plurality of pixel units, each pixel unit including three sub-pixels;
each pixel unit is connected with one data driving line and three scanning driving lines;
the driving method includes:
applying gating signals on the scanning driving line along a first direction in sequence;
respectively applying driving voltages to the data driving lines;
wherein, in the same frame picture;
in three adjacent sub-pixels along the same direction, the polarities of the driving voltages of two adjacent sub-pixels are the same, and the polarity of the driving voltage of the remaining sub-pixel is different from that of the driving voltages of the other two sub-pixels; the sub-pixels along the second direction maintain consistent driving voltage polarity;
the polarities of the driving voltages output by any two adjacent columns of the sub-pixels in the odd columns are opposite, and the polarities of the driving voltages output by the sub-pixels in the even columns of the adjacent columns are opposite;
and the sub-pixels in the even columns along the second direction maintain consistent voltage, and the driving voltage of at least one sub-pixel in the sub-pixels in the odd columns along the second direction is different from the driving voltage of other sub-pixels in the odd columns.
4. A display comprising a backlight module and a display device according to any one of claims 1 to 2.
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| CN111477136A (en) * | 2020-04-08 | 2020-07-31 | 福建华佳彩有限公司 | A power-saving display screen architecture and driving method |
| CN113805372B (en) * | 2020-06-16 | 2024-10-29 | 深圳光峰科技股份有限公司 | LCD panel and display device |
| CN113296318A (en) * | 2021-04-16 | 2021-08-24 | 贵州芯源微科技有限公司 | Novel display framework and liquid crystal display panel |
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