This is a national stage of PCT Application Number PCT/CN2015/090329, filed on Sep. 23, 2015, claiming foreign priority of Chinese Patent Application Number 201510484012.0, filed on Aug. 3, 2015.
1. Field of the Invention
The present disclosure relates to liquid crystal display technology, and more particularly to a liquid crystal device (LCD).
2. Discussion of the Related Art
LCDs typically are characterized by attributes including low power consumption, low radiation, and low manufacturing cost, and thus have been widely adopted in a variety of electronic devices, such as TVs, cellular phones, digital cameras, and wearing devices. RGBW display technology of Thin Film Transistor Liquid Crystal Display (TFT-LCD) is popular due to high transmission rate and high brightness.
Currently, the LCDs display grayscale by driving the rotation of the liquid crystal molecules. Usually, positive and negative inversion methods are adopted, and dot inversion or column inversion are common polarity-inversion methods of sub-pixel array. However, the data voltage polarity outputted by adjacent data lines are opposite to each other, which results in that the polarity of the sub-pixels of the adjacent rows are inverse. When displaying by RGBW colors, data transient may cause serious Vcom coupling. At the same time, flick issues may occur due to the polarity of the sub-pixels having the same colors are the same, which greatly affects the display performance of the LCDs.
In view of the above, the inversed data signals polarity outputted by the adjacent data lines are unable to satisfy the requirement of the RGBW LCDs.
The object of the invention is to provide a LCD avoiding the Vcom coupling and eliminating the flicker issue so as to enhance the display performance.
In one aspect, a liquid crystal display (LCD) includes: a plurality of sub-pixels defined by a matrix along a column direction and a row direction, and a plurality of data lines arranged along the column direction, the data lines are configured for applying data signals to the sub-pixels in two lateral columns of the data lines along the row direction in an interleaved way, each of the sub-pixel rows comprising sub-pixels of even-number of colors arranged periodically, with respect to the sub-pixels comprising red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels, the sub-pixels in two adjacent rows, the sub-pixels of the same color are interleaved for one or three columns along the column direction, when the LCD displays a pure color frame, within the even-number arranging periods of the sub-pixels arranged along the column direction, a number of the sub-pixels of the same color being applied with the data signals having positive polarity is the same with the sub-pixels of the same color being applied with the data signals having negative polarity.
Wherein with respect to the sub-pixels of the same color in two adjacent columns, the sub-pixels interleaved for one row are respectively applied with the data signals by the data lines between the two sub-pixels.
Wherein with respect to the sub-pixels of the same color in two adjacent columns, the sub-pixels interleaved for one row are respectively applied with the data signals by the data lines at two lateral sides of the sub-pixels.
Wherein with respect to the even-number arranging periods of the sub-pixels arranged along the column direction, the data signals polarity of a portion of the adjacent sub-pixels within each of the arranging period is the same, within different arranging periods, the data signals polarity of a portion of the adjacent sub-pixels are opposite to each other.
Wherein the LCD further comprises a data driver comprises a plurality of output ports corresponding to the data lines, and the number of the output ports is the same with the number of the data lines, the data signals polarity of each of the output port is opposite to that of the adjacent output port, within the even-number of arranging periods along the column direction, the data lines corresponding to a portion of the sub-pixels connect to the output ports in a direct way, and the data lines corresponding to other sub-pixels connect to the output ports in a cross way.
Wherein with respect to the direct way, the n-th data line among the data lines and the n-th charging port of the data driver are connected, and with respect to the cross way, the i-th data line among the data lines and the (i+j)-th or the (i−j)-th output port (Ki+j) of the data driver are connected, wherein n and i are positive integers different from each other, and j is an odd number.
Wherein the sub-pixel of even-number of colors comprises the sub-pixel of four colors, and the even-number arranging periods comprises two arranging periods, wherein within the two arranging periods, the data signals polarity of the n-th sub-pixel is opposite to that applied by the (n+4)-th sub-pixel, wherein n is a positive integer larger than or equals to one and is smaller than or equals to four.
Wherein the data signals polarity of the sub-pixels within the two arranging periods are positive, negative, positive, positive, negative, positive, negative and negative, or negative, positive, positive, negative, positive, negative, negative and negative.
In another aspect, a LCD includes: a plurality of sub-pixels defined by a matrix along a column direction and a row direction, and a plurality of data lines arranged along the column direction the data lines are configured for applying data signals to the sub-pixels in two lateral columns of the data lines along the row direction in an interleaved way, each of the sub-pixel rows comprising sub-pixels of even-number of colors arranged periodically, with respect to the sub-pixels in two adjacent rows, the sub-pixels of the same color are interleaved with each other along the column direction, when the LCD displays a pure color frame, within the even-number arranging periods of the sub-pixels arranged along the column direction, a number of the sub-pixels of the same color being applied with the data signals having positive polarity is the same with the sub-pixels of the same color being applied with the data signals having negative polarity.
Wherein with respect to the sub-pixels in two adjacent rows, the sub-pixels of the same color are interleaved for one or three columns along the column direction.
Wherein with respect to the sub-pixels of the same color in two adjacent columns, the sub-pixels interleaved for one row are respectively applied with the data signals by the data lines between the two sub-pixels.
Wherein with respect to the sub-pixels of the same color in two adjacent columns, the sub-pixels interleaved for one row are respectively applied with the data signals by the data lines at two lateral sides of the sub-pixels.
Wherein with respect to the even-number arranging periods of the sub-pixels arranged along the column direction, the data signals polarity of a portion of the adjacent sub-pixels within each of the arranging period is the same, within different arranging periods, the data signals polarity of a portion of the adjacent sub-pixels are opposite to each other.
Wherein the LCD further comprises a data driver comprising a plurality of output ports corresponding to the data lines, and the number of the output ports is the same with the number of the data lines, the data signals polarity of each of the output port is opposite to that of the adjacent output port, within the even-number of arranging periods along the column direction, the data lines corresponding to a portion of the sub-pixels connect to the output ports in a direct way, and the data lines corresponding to other sub-pixels connect to the output ports in a cross way.
Wherein with respect to the direct way, the n-th data line among the data lines and the n-th charging port of the data driver are connected, and with respect to the cross way, the i-th data line among the data lines and the (i+j)-th or the (i−j)-th output port (Ki+j) of the data driver are connected, wherein n and i are positive integers different from each other, and j is an odd number.
Wherein the sub-pixel of even-number of colors comprises the sub-pixel of four colors, and the even-number arranging periods comprises two arranging periods, wherein within the two arranging periods, the data signals polarity of the n-th sub-pixel is opposite to that applied by the (n+4)-th sub-pixel, wherein n is a positive integer larger than or equals to one and is smaller than or equals to four.
Wherein the data signals polarity of the sub-pixels within the two arranging periods are positive, negative, positive, positive, negative, positive, negative and negative, or negative, positive, positive, negative, positive, negative, negative and negative.
Wherein the sub-pixels of even-number colors comprises red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels.
In view of the above, with respect to the sub-pixels arranged at least in two adjacent rows, the sub-pixels of the same color are interleaved with each other along the column direction. When the LCD displays a pure color frame, within the even-number arranging periods of the sub-pixels arranged along the column direction, a number of the sub-pixels of the same color being applied with the data signals having positive polarity is the same with the sub-pixels of the same color being applied with the data signals having negative polarity. In this way, the common electrode coupling caused by the transition of the data signals may be avoided. This eliminates the flicker issues and enhances the display performance of the LCD.
Embodiments of the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown.
Referring to
With respect to the sub-pixels 110 in two adjacent rows along the column direction, the sub-pixels 110 having the same color may be interleaved for one or three columns. As shown in
With respect to the sub-pixels 110 in two adjacent columns along the row direction, the sub-pixels 110 of the same color and is spaced apart for one row are respectively applied with the data signals by the data line between the two sub-pixels 110. For instance, the R sub-pixel in the first column and the first row and the R sub-pixel in the second column and the second row are respectively applied with the data signals by the second data line (S2).
Referring to
Within the two arranging periods of the sub-pixels 110 arranged along the column direction, the data signals polarity of a portion of the adjacent sub-pixels 110 within each of the arranging period is the same. Within different arranging periods, the data signals polarity of a portion of the adjacent sub-pixels 110 are opposite to each other. For instance, the B sub-pixel in the first row and in the third column and the W sub-pixel in the first row and in the fourth column are within the same arranging period, and the two sub-pixels are adjacent to each other. The polarity of the data signals respectively received from the fourth data line (S4) and the fifth data line (S5) are the same. The W sub-pixel in the first row and in the fourth column and the R sub-pixel in the first row and in the fifth column are within different arranging periods, and the two sub-pixels are adjacent to each other. The polarity of the data signals respectively received from the fourth data line (S5) and the fifth data line (S6) are opposite to each other.
Within the two arranging periods having the R sub-pixel, the G sub-pixel, the B sub-pixel, and the W sub-pixel periodically arranged along the column direction, the data signals polarity of the second data line (S2) and the sixth data line (S6) are opposite to each other. As such, the data signals polarity of the R sub-pixel in the first column and that of the R sub-pixel in the fifth column are opposite to each other. In this way, the number of the R sub-pixels in the first column being applied with the data signals having positive polarity is the same with that in the fifth column being applied with the data signals having negative polarity. Similarly, the data signals polarity of the third data line (S3) and that of the seventh data line (S7) are opposite to each other, and thus the data signals polarity of the G sub-pixel in the second column is opposite to that of the G sub-pixel in the sixth column. In this way, the number of the G sub-pixels in the sixth column being applied with the data signals having positive polarity is the same with that in the second column being applied with the data signals having negative polarity. The data signals polarity of the fourth data line (S4) and that of the eighth data line (S8) are opposite to each other, and thus the data signals polarity of the B sub-pixel in the third column is opposite to that of the B sub-pixel in the seventh column. In this way, the number of the B sub-pixels in the third column being applied with the data signals having positive polarity is the same with that in the seventh column being applied with the data signals having negative polarity. The data signals polarity of the fifth data line (S5) and that of the first data line (S1) are opposite to each other, and thus the data signals polarity of the W sub-pixel in the fourth column is opposite to that of the W sub-pixel in the eighth column. In this way, the number of the W sub-pixels in the eighth column being applied with the data signals having positive polarity is the same with that in the fourth column being applied with the data signals having negative polarity.
In the embodiment, among the sub-pixels 110 of the same color, the number of the sub-pixels 110 being applied with the data signals having positive polarity is the same with that in the second column being applied with the data signals having negative polarity. That is, when the LCD 10 displays the pure color frame, half of the data signals polarity of the sub-pixels 110 of the same color are positive, and half of the data signals polarity of the sub-pixels 110 of the same color are negative. As such, when the sub-pixels 110 perform grayscale displaying when being driven by row inversion or column inversion, the common electrode coupling caused by the transition of the data signals may be avoided. This eliminates the flicker issues and enhances the display performance of the LCD 10. The row inversion method will be taken as one example to illustrate
Referring to
The direct way relates to connecting the n-th data line (Gn) of the scanning driver 130 and the n-th charging port (Ln) of the data driver 120. The cross way relates to connecting the i-th data line (Si) among the data lines and the (i+j)-th output port (Ki+j) of the data driver 120 or the (i−j)-th output port (Ki−j), wherein n and i are positive integers different from each other, and j is an odd number.
With respect to the two arranging periods in
The two arranging periods arranged along the column direction respectively include the R sub-pixel, the G sub-pixel, the B sub-pixel, and the W sub-pixel periodically arranged. The data signals polarity of the first data line (S1) is opposite to that of the data line (S5) such that the data signals polarity of the R sub-pixel in the first column is opposite to that of the R sub-pixel in the fifth column such that the data signals polarity of the R sub-pixel in the first column is opposite to that of the R sub-pixel in the fifth column. In this way, regarding the sub-pixels having the same color, the number of the sub-pixels in the first column being applied with the data signals having positive polarity is the same with the sub-pixels in the fifth column being applied with the data signals having negative polarity. Similarly, the data signals polarity of the second data line (S2) and that of the sixth data line (S6) are opposite to each other, and thus the data signals polarity of the G sub-pixel in the second column is opposite to that of the G sub-pixel in the sixth column. In this way, the number of the G sub-pixels in the sixth column being applied with the data signals having positive polarity is the same with that in the second column being applied with the data signals having negative polarity. The data signals polarity of the third data line (S3) and that of the seventh data line (S7) are opposite to each other, and thus the data signals polarity of the B sub-pixel in the third column is opposite to that of the B sub-pixel in the seventh column. In this way, the number of the B sub-pixels in the third column being applied with the data signals having positive polarity is the same with that in the seventh column being applied with the data signals having negative polarity. The data signals polarity of the fourth data line (S4) and that of the eighth data line (S8) are opposite to each other, and thus the data signals polarity of the W sub-pixel in the fourth column is opposite to that of the W sub-pixel in the eighth column. In this way, the number of the W sub-pixels in the eighth column being applied with the data signals having positive polarity is the same with that in the fourth column being applied with the data signals having negative polarity.
As the other data lines display corresponding colors, and thus the data signals applied by other data lines are the same with the common electrode (Vcom). At this moment, half of the data signals polarity of the R sub-pixel is positive, and half of the data signals polarity of the R sub-pixel is negative, the common electrode coupling caused by the transition of the data signals may be avoided. The flicker issues are eliminated and the display performance of the LCD 10 is enhanced.
It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the invention.
Number | Date | Country | Kind |
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2015 1 0484012 | Aug 2015 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2015/090329 | 9/23/2015 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2017/020409 | 2/9/2017 | WO | A |
Number | Name | Date | Kind |
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20080094530 | Ina | Apr 2008 | A1 |
20110242065 | Hsu | Oct 2011 | A1 |
20120098871 | Park | Apr 2012 | A1 |
20140232624 | Kim | Aug 2014 | A1 |
20160035288 | Chu Ke | Feb 2016 | A1 |
Number | Date | Country | |
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20170162138 A1 | Jun 2017 | US |