CN109859716B - Liquid crystal display panel, display device and driving method - Google Patents
Liquid crystal display panel, display device and driving method Download PDFInfo
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Abstract
The embodiment of the invention provides a liquid crystal display panel, a display device and a driving method, relates to the technical field of display, can drive the liquid crystal display panel to realize the display of an electronic tag by using a simpler driving mode, and has smaller power consumption and lower cost in the driving process. The liquid crystal display panel includes: a plurality of rows of pixels; a data line corresponding to each column of sub-pixels; a source signal line corresponding to each column of pixels; in each column of pixels, the first control switch tube is connected in series between the data line corresponding to the first sub-pixel column and the corresponding source signal line; the second control switch tube is connected in series between the data line corresponding to the third sub-pixel column and the corresponding source signal line; the data lines corresponding to the second sub-pixel columns are electrically connected to the corresponding source signal lines; the second subpixel column is a white subpixel column.
Description
Technical Field
The invention relates to the technical field of display, in particular to a liquid crystal display panel, a display device and a driving method.
Background
The electronic tag is a display device capable of replacing a traditional paper tag, and generally only three specific colors need to be displayed due to the requirement of an application scene, so that a simple picture can be realized, for example, black characters on white background or black characters on yellow background are displayed.
The existing liquid crystal display panel can realize rich color picture display, so if the existing liquid crystal display panel is used for realizing the display of the electronic tag, the power consumption in the driving process is larger, and the cost is higher.
Disclosure of Invention
The embodiment of the invention provides a liquid crystal display panel, a display device and a driving method, which can drive the liquid crystal display panel to realize the display of an electronic tag by using a simpler driving mode, and have the advantages of lower power consumption and lower cost in the driving process.
In one aspect, an embodiment of the present invention provides a liquid crystal display panel, including:
a plurality of columns of pixels arranged along a row direction, each column of pixels comprising three columns of sub-pixels arranged along the row direction, each column of sub-pixels comprising a plurality of sub-pixels arranged along a column direction, the three columns of sub-pixels comprising a first sub-pixel column, a second sub-pixel column and a third sub-pixel column;
each sub-pixel comprises a pixel electrode and a charging switch tube, wherein the first end of the charging switch tube is electrically connected to the pixel electrode;
the scanning line corresponds to each row of the sub-pixels and is electrically connected to the control end of each charging switch tube of the corresponding row of the sub-pixels;
the data line is electrically connected with the second end of each charging switch tube of the corresponding column of the sub-pixels;
a source signal line corresponding to each column of the pixels;
each column of the pixels comprises a first control switch tube, and in each column of the pixels, the first control switch tube is connected in series between the data line corresponding to the first sub-pixel column and the corresponding source signal line;
each column of the pixels comprises a second control switch tube, and in each column of the pixels, the second control switch tube is connected in series between the data line corresponding to the third sub-pixel column and the corresponding source signal line;
in each column of the pixels, the data lines corresponding to the second sub-pixel column are electrically connected to the corresponding source signal lines;
the second sub-pixel column is a white sub-pixel column.
Optionally, the liquid crystal display panel further includes:
the first control signal wire is electrically connected to the control end of each first control switch tube;
and the second control signal wire is electrically connected to the control end of each second control switch tube.
Optionally, each of the sub-pixels in all of the first sub-pixel columns is a same color sub-pixel;
each of the subpixels in all of the third subpixel columns are same color subpixels.
Optionally, one of the first subpixel column and the third subpixel column is a yellow subpixel column, and the other of the first subpixel column and the third subpixel column is a white subpixel column.
Optionally, one of the first sub-pixel column and the third sub-pixel column is a yellow sub-pixel column, and the other of the first sub-pixel column and the third sub-pixel column is a red sub-pixel column.
Optionally, each of the sub-pixels in the yellow sub-pixel column includes a red color resistance and a green color resistance for filtering light.
Optionally, the liquid crystal display panel includes a display area and a non-display area, and the first control switch tube and the second control switch tube are located in the non-display area.
On the other hand, an embodiment of the invention further provides a display device, which includes the liquid crystal display panel.
On the other hand, an embodiment of the present invention further provides a driving method for the above-mentioned liquid crystal display panel, where the driving method includes:
periodic charging periods, each of the charging periods comprising a first charging period and a second charging period;
in the first charging period, the first control switch tube is controlled to be turned on, the second control switch tube is controlled to be turned off, and the data voltage on the data line is transmitted to the pixel electrode in the first sub-pixel column and the pixel electrode in the second sub-pixel column;
and in the second charging period, the first control switch tube is controlled to be turned off, the second control switch tube is controlled to be turned on, and the data voltage on the data line is transmitted to the pixel electrode in the second sub-pixel column and the pixel electrode in the third sub-pixel column.
Optionally, in the first charging period, a conducting level is sequentially provided for each scanning line, so that the sub-pixels enter a charging state row by row, the charging switch tube in the sub-pixel entering the charging state is turned on, the first control switch tube is controlled to be turned on, the second control switch tube is controlled to be turned off, and the data voltage on the data line is transmitted to the pixel electrode in the sub-pixel entering the charging state in the first sub-pixel column and the second sub-pixel column row by row;
in the second charging period, a conducting level is sequentially provided for each scanning line, so that the sub-pixels enter a charging state line by line, the first control switch tube is controlled to be turned off, the second control switch tube is controlled to be turned on, and data voltages on the data lines are transmitted to the pixel electrodes in the sub-pixels entering the charging state in the second sub-pixel column and the third sub-pixel column line by line.
According to the liquid crystal display panel, the display device and the driving method, on one hand, for one pixel, three sub-pixels are connected with the driving chip through the same source signal line, and each sub-pixel is not required to be connected with the driving chip through a separate pin, so that the pin number of the driving chip is saved, and the cost is reduced; on the other hand, for one pixel, three sub-pixels only need to receive two independent data voltages, and a driving chip does not need to generate corresponding data voltage signals for each sub-pixel, so that the power consumption of the driving chip is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a partial area of a liquid crystal display panel according to an embodiment of the present invention;
FIG. 2 is an enlarged partial view of a portion of the area of FIG. 1;
FIG. 3 is a timing diagram of the pixel of FIG. 2;
FIG. 4 is a schematic view of a structure of the LCD panel of FIG. 2;
fig. 5 is a schematic structural diagram of a display device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
As shown in fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a partial region of a liquid crystal display panel in an embodiment of the present invention, and fig. 2 is a schematic partial enlarged view of the partial region in fig. 1, an embodiment of the present invention provides a liquid crystal display panel, including: a plurality of columns of pixels 1 arranged in a row direction h1, each column of pixels 1 including three columns of sub-pixels 10 arranged in the row direction h1, each column of sub-pixels 1 including a plurality of sub-pixels 10 arranged in a column direction h2, three columns of sub-pixels 10 in each column of pixels 1 including a first sub-pixel column 11, a second sub-pixel column 12, and a third sub-pixel column 13; each sub-pixel 10 comprises a pixel electrode 101 and a charging switch tube 102, wherein a first end of the charging switch tube 102 is electrically connected to the pixel electrode 101; a scan line Gate corresponding to each row of sub-pixels 10, the scan line Gate being electrically connected to the control terminal of each charge switch tube 102 of the corresponding row of sub-pixels 10; a Data line Data corresponding to each column of sub-pixels 10, the Data line Data being electrically connected to the second end of each charging switch tube 102 of the corresponding column of sub-pixels 10, i.e. the charging switch tube 102 is connected in series between the corresponding pixel electrode 101 and the corresponding Data line Data; a source signal line SD corresponding to each column of pixels 1; each column of pixels 1 comprises a first control switch tube M1, and in each column of pixels 1, the first control switch tube M1 is connected in series between the Data line Data corresponding to the first sub-pixel column 11 and the corresponding source signal line SD; each column of pixels 1 comprises a second control switch tube M2, and in each column of pixels 1, the second control switch tube M2 is connected in series between the Data line Data corresponding to the third sub-pixel column 13 and the corresponding source signal line SD; in each column of pixels 1, the Data line Data corresponding to the second sub-pixel column 12 is electrically connected to the corresponding source signal line SD; the second subpixel row 12 is a white subpixel row.
As shown in fig. 1, 2 and 3, fig. 3 is a timing signal diagram corresponding to the pixel in fig. 2, and the embodiment of the invention further provides a driving method for the liquid crystal display panel, where in fig. 3, VGate1, VGate2, … and VGateN are respectively used to represent voltages of the first scan line Gate, the second scan line Gate, … and the nth scan line Gate, a control terminal of the first control switch tube M1 is electrically connected to the first control signal line K1, a control terminal of the second control switch tube M2 is electrically connected to the second control signal line K2, VK1 is used to represent a voltage of the first control signal line K1, VK2 is used to represent a voltage of the second control signal line K2, it should be noted that the switch tubes in fig. 2 are all P-type transistors, the P-type transistors have low-level on and high-level off characteristics, and the N-type transistors have high-level on characteristics, The low-level cut-off characteristic, the embodiment of the present invention does not limit the type of the switching tube, and only takes the P-type transistor as an example for description, and the driving method includes: periodic charging periods t, each charging period t comprising a first charging period t1 and a second charging period t 2; in the first charging period t1, the first control switch tube M1 is controlled to be turned on, the second control switch tube M2 is controlled to be turned off, and the Data voltage on the Data line Data is transmitted to the pixel electrode 101 in the first sub-pixel column 11 and the pixel electrode 101 in the second sub-pixel column 12; in the second charging period t2, the first control switch M1 is turned off, and the second control switch M2 is turned on, so that the Data voltage on the Data line Data is transmitted to the pixel electrode 101 in the second sub-pixel column 12 and the pixel electrode 101 in the third sub-pixel column 13.
Specifically, in the embodiment of the present invention, the liquid crystal display panel further includes a common electrode, a liquid crystal layer, and a color filter substrate (not shown in the figure), in a working process of the liquid crystal display panel, a common electrode voltage is applied to the common electrode, a corresponding pixel electrode voltage is applied to each pixel electrode, an electric field is generated between the pixel electrode and the common electrode, liquid crystals in the liquid crystal layer corresponding to the sub-pixels are deflected under the action of the electric field, so as to implement gray scale display corresponding to the sub-pixels, and the color filter substrate has a color resistance corresponding to the sub-pixels, and is used for filtering emergent light of the sub-pixels to display corresponding colors. In the embodiment of the invention, the application scene of the liquid crystal display panel is the electronic tag, so that rich color display is not required, and only simple color and pattern display is required to be realized through driving. The Data lines Data are used for providing Data voltages for the sub-pixels and charging the pixel electrodes of the corresponding sub-pixels, and the Data lines Data are electrically connected to a driving chip (not shown) through source signal lines SD, and the driving chip generates the Data voltages. Each column of pixels 1 comprises a plurality of pixels arranged along the column direction h2, each pixel comprises three sub-pixels 10 arranged along the row direction h1, and each source signal line SD is used for being electrically connected to a driving chip individually and for supplying data voltages to one column of pixels 1, i.e. for supplying data voltages to three columns of sub-pixels.
The liquid crystal display panel and the driving method in the embodiment of the present invention are explained below by taking a driving process of one pixel in fig. 2 as an example:
as shown in fig. 2 and 3, for example, in the charging process of the pixel composed of the three sub-pixels 10 at the upper left corner, when the scanning line Gate is at the low level (on level) in the first charging period t1, the charging switch tube 102 of each sub-pixel 10 in the pixel is controlled to be turned on, the first control signal line K1 is at the low level (on level), the first control switch tube M1 is controlled to be turned on, the second control signal line K2 is at the high level (off level), the second control switch tube M2 is controlled to be turned off, the data voltage on the source signal line SD corresponding to the pixel is transmitted to the first one of the pixel electrodes 101 through the first control switch tube M1 and the charging switch tube 102 in the first row sub-pixel 10 of the first sub-pixel column 11, and at the same time, the data voltage on the source signal line SD is transmitted to the pixel electrode 101 in the second one of the sub-pixels 10 through the charging switch tube 102 in the first row sub-pixel 10 of the second sub-pixel column 12, i.e. the charging of the first two sub-pixels 10 in the pixel is achieved; in the second charging period t2, when the scan line Gate is at a low level (on level), the charging switch tube 102 of each sub-pixel 10 in the pixel is controlled to be turned on, the first control signal line K1 is at a high level, the first control switch tube M1 is controlled to be turned off, the second control signal line K2 is at a low level, the second control switch tube M2 is controlled to be turned on, the data voltage on the source signal line SD is transmitted to the pixel electrode 101 in the second sub-pixel 10 through the charging switch tube 102 in the first sub-pixel 10 in the second sub-pixel column 12, and simultaneously, the data voltage on the source signal line SD is transmitted to the third pixel electrode 101 through the second control switch tube M2 and the charging switch tube 102 in the first sub-pixel 10 in the first row of the third sub-pixel column 13, i.e., the charging of the last two sub-pixels 10 in the pixel is realized. The first charging period t1 and the second charging period t2 constitute the charging process of the whole pixel, and one pixel includes three sub-pixels 10, wherein the pixel electrode 101 in the second sub-pixel 10 receives the data voltage signal on the same source signal line SD during both the first charging period t1 and the second charging period t2, and therefore the pixel voltage on the pixel electrode 101 in the second sub-pixel 10 is determined by the data voltage on the source signal line SD during the second charging period t 2.
It should be noted that, in the prior art, a liquid crystal display panel is used to present rich colors, for example, one pixel includes a red sub-pixel, a blue sub-pixel and a green sub-pixel, a pixel electrode corresponding to each sub-pixel receives a data voltage of a corresponding point, a data voltage value is related to a gray scale value of the sub-pixel to reflect the luminance of the sub-pixel, the three sub-pixels with different colors and different luminances are overlapped to form a color pixel, and a large number of pixels implement the color graphic display of the whole liquid crystal display panel. Therefore, in the prior art, on one hand, each sub-pixel needs a separate pin to be connected with a driving chip, and the driving chip needs more pins and is higher in cost; on the other hand, each sub-pixel needs to receive an independent data voltage, and the data voltage comes from the driving chip, so that in the driving process, the driving chip drives each sub-pixel to generate an independent data voltage signal, and the power consumption is high. In the embodiment of the present invention, the liquid crystal display panel is only used for displaying a picture, the second subpixel row 12 is a white subpixel row, that is, the second subpixel row 12 does not need to form a color pixel together with subpixels of other colors, but only plays a role of brightening, and in the charging process of the same pixel, the second subpixel row 12 and the third subpixel row 13 simultaneously receive the data voltage on the same source signal line SD in the second charging period t2, so that the gray scale value corresponding to the second subpixel row 12 is the same as the gray scale value corresponding to the third subpixel row 13, that is, the display of the color pixel is realized by the combination of different colors between the first subpixel row 11 and the third subpixel row 13, and since there is no need to realize rich colors, the combination of two colors can realize the display of the electronic tag.
According to the liquid crystal display panel and the driving method, on one hand, for one pixel, three sub-pixels are connected with the driving chip through the same source signal line, and each sub-pixel is not required to be connected with the driving chip through a separate pin, so that the pin number of the driving chip is saved, and the cost is reduced; on the other hand, for one pixel, three sub-pixels only need to receive two independent data voltages, and a driving chip does not need to generate corresponding data voltage signals for each sub-pixel, so that the power consumption of the driving chip is reduced.
Optionally, the liquid crystal display panel further includes: a first control signal line K1 electrically connected to the control end of each first control switch tube M1; and a second control signal line K2 electrically connected to the control terminal of each second control switch tube M2.
Specifically, since each column of pixels 1 has the same structure, each column of pixels 1 can be driven in the same manner to reduce power consumption during driving, and in the entire liquid crystal display panel, the same first control signal line K1 is used to electrically connect the control terminal of the first control switch tube M1 corresponding to each column of pixels 1, and the same first control signal line K2 is used to electrically connect the second control switch tube M2 corresponding to each column of pixels 1.
Optionally, each sub-pixel 10 in all the first sub-pixel columns 11 is a same color sub-pixel; each sub-pixel 10 in all third sub-pixel columns 13 is a same color sub-pixel.
Specifically, when the first control signal line K1 is electrically connected to the first control switch tube M1 corresponding to each column of pixels 1, the second control signal line K2 is electrically connected to the second control switch tube M2 corresponding to each column of pixels 1, each column of pixels 1 has the same driving process, and all the sub-pixels 10 in the first sub-pixel column 11 are configured as the same color sub-pixels, all the sub-pixels 10 in the second sub-pixel column 12 are configured as the white sub-pixels, all the sub-pixels 10 in the third sub-pixel column 13 are configured as the same color sub-pixels, because the image displayed by the electronic label is simpler, the probability that the adjacent pixels display the same color is higher, during charging of the sub-pixels 10 by scanning line by line, when the pixels adjacent in the column direction display the same color, the data voltage on the source signal line SD does not need to be changed, and therefore, the power consumption of the driving chip is low.
Alternatively, one of the first subpixel column 11 and the third subpixel column 13 is a yellow subpixel column, and the other of the first subpixel column 11 and the third subpixel column 13 is a white subpixel column.
Specifically, for example, the sub-pixel 10 in the first sub-pixel column 11 is a yellow sub-pixel, the sub-pixel 10 in the second sub-pixel column 12 is a white sub-pixel, and the sub-pixel 10 in the third sub-pixel column 13 is a white sub-pixel, in the electronic label, two colors or three colors need to be displayed, for example, a picture such as white on the yellow, black on the yellow, and the like is displayed, for a pixel at a yellow position in the picture, in the first charging period t1, the pixel electrode 101 in the first sub-pixel column 11 and the pixel electrode 101 in the second sub-pixel column 12 receive a data voltage corresponding to a maximum gray level value, and in the second charging period t2, the pixel electrode 101 in the second sub-pixel column 12 and the pixel electrode 101 in the third sub-pixel column 13 receive a data voltage corresponding to a maximum gray level value, so that after the pixel is charged, the display of the yellow pixel is realized; for a pixel at a white position in a picture, in a first charging period t1, the pixel electrode 101 in the first sub-pixel column 11 and the pixel electrode 101 in the second sub-pixel column 12 receive a data voltage corresponding to a minimum gray-scale value, and in a second charging period t2, the pixel electrode 101 in the second sub-pixel column 12 and the pixel electrode 101 in the third sub-pixel column 13 receive a data voltage corresponding to a maximum gray-scale value, so that after the pixel is charged, the display of a white pixel is realized; for a pixel at a black position in a screen, in the first charging period t1, the pixel electrode 101 in the first sub-pixel column 11 and the pixel electrode 101 in the second sub-pixel column 12 receive a data voltage corresponding to a minimum gray-scale value, and in the second charging period t2, the pixel electrode 101 in the second sub-pixel column 12 and the pixel electrode 101 in the third sub-pixel column 13 receive a data voltage corresponding to a minimum gray-scale value, so that after the pixel is charged, the display of a black pixel is realized.
Alternatively, one of the first subpixel column 11 and the third subpixel column 13 is a yellow subpixel column, and the other of the first subpixel column 11 and the third subpixel column 13 is a red subpixel column.
Specifically, for example, the sub-pixel 10 in the first sub-pixel column 11 is a yellow sub-pixel, the sub-pixel 10 in the second sub-pixel column 12 is a white sub-pixel, and the sub-pixel 10 in the third sub-pixel column 13 is a red sub-pixel, for example, for a pixel at a yellow position in a picture, in the first charging period t1, the pixel electrode 101 in the first sub-pixel column 11 and the pixel electrode 101 in the second sub-pixel column 12 receive a data voltage corresponding to a maximum gray-scale value, and in the second charging period t2, the pixel electrode 101 in the second sub-pixel column 12 and the pixel electrode 101 in the third sub-pixel column 13 receive a data voltage corresponding to a minimum gray-scale value, so that after the pixel is charged, the display of the yellow pixel is realized; for a pixel at a red position in a picture, in a first charging period t1, the pixel electrode 101 in the first sub-pixel column 11 and the pixel electrode 101 in the second sub-pixel column 12 receive a data voltage corresponding to a minimum gray-scale value, and in a second charging period t2, the pixel electrode 101 in the second sub-pixel column 12 and the pixel electrode 101 in the third sub-pixel column 13 receive a data voltage corresponding to a maximum gray-scale value, so that after the pixel is charged, the display of a red pixel is realized; for a pixel at a black position in a screen, the pixel electrodes 101 in the first sub-pixel column 11, the second sub-pixel column 12 and the third sub-pixel column 13 all receive a data voltage corresponding to a minimum gray-scale value in the first charging period t1 and the second charging period t2, so that after the pixel is charged, the display of a black pixel is realized.
Optionally, each sub-pixel 10 in the yellow sub-pixel column comprises a red color resistance and a green color resistance for filtering.
Specifically, each sub-pixel 10 in the yellow sub-pixel column is a yellow sub-pixel, and for the yellow sub-pixel, a corresponding yellow color resistance is set on the color film substrate in one implementation manner, and is used for directly filtering emergent light into yellow light and then emitting the yellow light; however, since the yellow color resistor is relatively expensive to manufacture, another implementation is to divide the opening of the sub-pixel into two parts, wherein one part is provided with a red color resistor, the other part is provided with a green color resistor, the emergent light is filtered into red light and green light for emergence, and the red light and the green light can be perceived as yellow by human eyes after being combined.
Alternatively, as shown in fig. 1, fig. 2 and fig. 4, fig. 4 is a schematic structural diagram of the liquid crystal display panel in fig. 2, the liquid crystal display panel includes a display area 01 and a non-display area 02, and the first control switch tube M1 and the second control switch tube M2 are located in the non-display area 02. Since the first control switch M1 and the second control switch M2 are used to control the charging of the pixels 1 in the same column, the first control switch M1 and the second control switch M2 are disposed in the non-display region 02, so that the space of the display region 01 can be saved and the light transmittance of the display region 01 can be improved.
Alternatively, as shown in fig. 1, fig. 2 and fig. 3, in the above method, in the first charging period t1, a turn-on level (low level) is sequentially provided for each scanning line Gate, so that the sub-pixels 10 enter the charging state row by row, the charging switching tube 102 in the sub-pixel 10 entering the charging state is turned on, the first control switching tube M1 is controlled to be turned on, the second control switching tube M2 is controlled to be turned off, and the Data voltage on the Data line Data is transmitted row by row to the pixel electrodes 101 in the sub-pixels 10 entering the charging state in the first sub-pixel column 11 and the second sub-pixel column 12; in the second charging period t2, an on level (low level) is sequentially provided for each scanning line Gate to make the sub-pixels 10 enter the charging state row by row, the first control switch tube M1 is controlled to be turned off, the second control switch tube M2 is controlled to be turned on, and the Data voltage on the Data line Data is transmitted to the pixel electrodes 101 in the sub-pixels 10 entering the charging state in the second sub-pixel column 12 and the third sub-pixel column 13 row by row.
Specifically, for example, in the first charging period t1, firstly, a low level is provided for the scan line Gate corresponding to the first row sub-pixel 10, at this time, other scan lines Gate provide a high level, that is, all the charging switching tubes 102 in the first row sub-pixel 10 are turned on, and the charging switching tubes 102 corresponding to other row sub-pixels 10 are turned off, even if the first row sub-pixel 10 enters a charging state, and other row sub-pixels 10 enter a non-charging state, since the first control switching tube M1 is turned on and the second control switching tube M2 is turned off, the data voltage on the source signal line SD is transmitted to the pixel electrode 101 in the first sub-pixel column 11 and the pixel electrode 101 in the second sub-pixel column 12, so as to realize the charging of the first sub-pixel column 11 and the second sub-pixel column 12 in the first row sub-pixel 10; after the first sub-pixel column 11 and the second sub-pixel column 12 in the first row of sub-pixels 10 are charged, the scan line Gate corresponding to the second row of sub-pixels 10 is provided with a low level, and at this time, other scan lines are provided with a high level, that is, all the charging switching tubes 102 in the second row of sub-pixels 10 are turned on, and the charging switching tubes 102 corresponding to other rows of sub-pixels 10 are turned off, so that even if the second row of sub-pixels 10 enters a charging state and other rows of sub-pixels 10 enter a non-charging state, the data voltage on the source signal line SD is transmitted to the pixel electrode 101 in the first sub-pixel column 11 in the second row of sub-pixels 10 and the pixel electrode 101 in the second sub-pixel column 12, so as to charge the first sub-pixel column 11 and the second sub-pixel column 12 in the second row of sub-pixels 10; by analogy, in the first charging period t1, the charging of the first sub-pixel column 11 and the second sub-pixel column 12 in all the row sub-pixels 10 is completed, and then the second charging period t2 is entered. In the second charging period t2, firstly, a low level is provided for the scan line Gate corresponding to the first row of sub-pixels 10, and at this time, other scan lines Gate provide a high level, that is, all the charging switching tubes 102 in the first row of sub-pixels 10 are turned on, and the charging switching tubes 102 corresponding to other row of sub-pixels 10 are turned off, even if the first row of sub-pixels 10 enters a charging state and other row of sub-pixels 10 enter a non-charging state, since the first control switching tube M1 is turned off, the second control switching tube M2 is turned on, and the data voltage on the source signal line SD is transmitted to the pixel electrode 101 in the second sub-pixel column 12 in the first row of sub-pixels 10 and the pixel electrode 101 in the third sub-pixel column 13, so as to charge the second sub-pixel column 12 and the third sub-pixel column 13 in the first row of sub-pixels 10; after the second sub-pixel column 12 and the third sub-pixel column 13 in the first row of sub-pixels 10 are charged, the scan line Gate corresponding to the second row of sub-pixels 10 is provided with a low level, and at this time, other scan lines are provided with a high level, that is, all the charging switching tubes 102 in the second row of sub-pixels 10 are turned on, and the charging switching tubes 102 corresponding to other rows of sub-pixels 10 are turned off, so that even if the second row of sub-pixels 10 enters a charging state and other rows of sub-pixels 10 enter a non-charging state, the data voltage on the source signal line SD is transmitted to the pixel electrode 101 in the second sub-pixel column 12 in the second row of sub-pixels 10 and the pixel electrode 101 in the third sub-pixel column 13, so as to charge the second sub-pixel column 12 and the third sub-pixel column 13 in the second row of sub-pixels 10; by analogy, in the second charging period t2, the charging of the second sub-pixel column 12 and the third sub-pixel column 13 in all the rows of sub-pixels 10 is completed. In the charging period t consisting of the first charging period t1 and the second charging period t2, charging of all the sub-pixels 10 in the liquid crystal display panel is completed, one refreshing of a complete picture of the liquid crystal display panel is realized, and then, the next charging period t is entered for the next refreshing of the picture.
It should be noted that, the liquid crystal display panel in the embodiment of the present invention may be driven by applying the above-mentioned driving method, or may be driven by applying other driving methods, and since the liquid crystal display panel is used as an electronic tag, and the picture of the electronic tag does not need to be frequently changed, for example, the scanning lines Gate may be set to be directly controlled by the driving chip, and the liquid crystal display panel does not need to be continuously and frequently refreshed, but when the picture of the electronic tag is changed, the corresponding sub-pixels 10 are directly charged in the area where the picture is changed through the corresponding scanning lines Gate and Data lines Data, and the first control signal line K1 and the second control signal line K2, so as to refresh the display picture.
As shown in fig. 5, fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present invention, and the embodiment of the present invention further provides a display device including the liquid crystal display panel 100.
The specific structure and principle of the lcd panel 100 are the same as those of the above embodiments, and are not described herein again. The display device may be any electronic device having a display function, such as a touch display screen, an electronic paper book, or an electronic tag.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A liquid crystal display panel, comprising:
a plurality of columns of pixels arranged along a row direction, each column of pixels comprising three columns of sub-pixels arranged along the row direction, each column of sub-pixels comprising a plurality of sub-pixels arranged along a column direction, the three columns of sub-pixels comprising a first sub-pixel column, a second sub-pixel column and a third sub-pixel column;
each sub-pixel comprises a pixel electrode and a charging switch tube, wherein the first end of the charging switch tube is electrically connected to the pixel electrode;
the scanning line corresponds to each row of the sub-pixels and is electrically connected to the control end of each charging switch tube of the corresponding row of the sub-pixels;
the data line is electrically connected with the second end of each charging switch tube of the corresponding column of the sub-pixels;
a source signal line corresponding to each column of the pixels;
each column of the pixels comprises a first control switch tube, and in each column of the pixels, the first control switch tube is connected in series between the data line corresponding to the first sub-pixel column and the corresponding source signal line;
each column of the pixels comprises a second control switch tube, and in each column of the pixels, the second control switch tube is connected in series between the data line corresponding to the third sub-pixel column and the corresponding source signal line;
in each column of the pixels, the data lines corresponding to the second sub-pixel column are electrically connected to the corresponding source signal lines;
the second sub-pixel column is a white sub-pixel column.
2. The liquid crystal display panel according to claim 1, further comprising:
the first control signal wire is electrically connected to the control end of each first control switch tube;
and the second control signal wire is electrically connected to the control end of each second control switch tube.
3. The liquid crystal display panel according to claim 1,
each sub-pixel in all the first sub-pixel columns is a sub-pixel with the same color;
each of the subpixels in all of the third subpixel columns are same color subpixels.
4. The liquid crystal display panel according to claim 3,
one of the first and third subpixel columns is a yellow subpixel column and the other of the first and third subpixel columns is a white subpixel column.
5. The liquid crystal display panel according to claim 3,
one of the first and third subpixel columns is a yellow subpixel column and the other of the first and third subpixel columns is a red subpixel column.
6. The liquid crystal display panel according to claim 4 or 5,
each of the subpixels in the yellow subpixel column includes a red color resistance and a green color resistance for filtering light.
7. The liquid crystal display panel according to claim 1,
the liquid crystal display panel comprises a display area and a non-display area, and the first control switch tube and the second control switch tube are located in the non-display area.
8. A display device comprising the liquid crystal display panel according to any one of claims 1 to 7.
9. A driving method for the liquid crystal display panel according to any one of claims 1 to 7, comprising:
periodic charging periods, each of the charging periods comprising a first charging period and a second charging period;
in the first charging period, the first control switch tube is controlled to be turned on, the second control switch tube is controlled to be turned off, and the data voltage on the data line is transmitted to the pixel electrode in the first sub-pixel column and the pixel electrode in the second sub-pixel column;
and in the second charging period, the first control switch tube is controlled to be turned off, the second control switch tube is controlled to be turned on, and the data voltage on the data line is transmitted to the pixel electrode in the second sub-pixel column and the pixel electrode in the third sub-pixel column.
10. The driving method according to claim 9,
in the first charging period, sequentially providing a conducting level for each scanning line, so that the sub-pixels in the first sub-pixel column and the second sub-pixel column enter a charging state row by row, the charging switch tube in the sub-pixel entering the charging state is turned on, the first control switch tube is controlled to be turned on, the second control switch tube is controlled to be turned off, and the data voltage on the data line is transmitted to the pixel electrodes in the sub-pixels entering the charging state row by row in the first sub-pixel column and the second sub-pixel column;
in the second charging period, a conducting level is sequentially provided for each scanning line, so that sub-pixels in a second sub-pixel column and sub-pixels in a third sub-pixel column enter a charging state row by row, the first control switch tube is controlled to be turned off, the second control switch tube is controlled to be turned on, and data voltages on the data lines are transmitted to the pixel electrodes in the sub-pixels entering the charging state row by row in the second sub-pixel column and the third sub-pixel column.
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| JP2005309005A (en) * | 2004-04-20 | 2005-11-04 | Bridgestone Corp | Image display apparatus |
| CN1292390C (en) * | 2004-10-20 | 2006-12-27 | 华南理工大学 | Digital electronic label detector and its detection method |
| CN104849890B (en) * | 2015-05-26 | 2018-01-12 | 武汉华星光电技术有限公司 | A kind of liquid crystal display panel, display device and its driving method |
| CN108375855B (en) * | 2018-02-28 | 2021-03-12 | 厦门天马微电子有限公司 | Display panel and display device |
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