CN113077763A

CN113077763A - Display panel, display device and driving method

Info

Publication number: CN113077763A
Application number: CN202010009863.0A
Authority: CN
Inventors: 张叶浩; 何宗泽; 陈秀云; 黄亚东; 肖聘; 赵晶
Original assignee: BOE Technology Group Co Ltd; Beijing BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Optoelectronics Technology Co Ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2021-07-06
Anticipated expiration: 2040-01-06
Also published as: CN113077763B

Abstract

The invention discloses a display panel, a display device and a driving method, wherein a mode selection module can disconnect a driving circuit electrically connected with a switch control signal end from a scanning signal line and a power line respectively under the control of a first level signal of the switch control signal end, so that the driving circuit does not work. And the pixel electrodes electrically connected with the pixel electrodes are mutually conducted, so that the voltages input by the two pixel electrodes are the same, and the display brightness of the areas corresponding to the pixel electrodes is the same, thereby realizing the effect of reducing the power consumption. And through the mode selection module, under the control of a second level signal of the switch control signal end, the pixel electrodes electrically connected with the mode selection module can be mutually disconnected, and the driving circuits electrically connected with the mode selection module are respectively connected with the scanning signal line and the power line, so that each driving circuit can independently input voltage to the pixel electrodes, the brightness displayed in the area corresponding to each pixel electrode can be independently controlled, and the display effect of improving the color depth is further realized.

Description

Display panel, display device and driving method

Technical Field

The present invention relates to the field of display technologies, and in particular, to a display panel, a display device, and a driving method.

Background

Generally, the display panel is in a standby state for a long time during use, and since no user is using the display panel during standby, it is not necessary to display a colorful screen and the same power consumption as that in normal display.

Disclosure of Invention

Embodiments of the present invention provide a display panel, which can change a color depth of a pixel unit.

Therefore, an embodiment of the present invention provides a display panel, including pixel units arranged in an array, a plurality of scan signal lines, and a plurality of power lines; the pixel unit comprises a plurality of sub-pixels, and each sub-pixel comprises a pixel electrode; at least part of the sub-pixels in the pixel unit further comprise a driving circuit electrically connected with the pixel electrode; the driving circuit of each row is correspondingly and electrically connected with one scanning signal line and one power line;

the display panel further comprises a mode selection module electrically connected with the pixel electrodes in the sub-pixels of the pixel units in a plurality of rows;

for a plurality of rows of the pixel units connected to the same mode selection module, the drive circuits in the sub-pixels of a part of the rows of the pixel units are directly and electrically connected with the corresponding scanning signal lines and power supply lines, and the drive circuits in the sub-pixels of the rest rows of the pixel units are electrically connected with the corresponding scanning signal lines and power supply lines through the mode selection module;

the mode selection module is connected to a switch control signal end and is configured to conduct pixel electrodes of a plurality of sub-pixels with the same color in the pixel units of the plurality of rows mutually and disconnect driving circuits in the sub-pixels of the pixel units of the other rows from corresponding scanning signal lines and power lines under the control of a first level signal of the switch control signal end; under the control of a second level signal of a switch control signal end, pixel electrodes of a plurality of sub-pixels with the same color in the pixel units of the plurality of rows are mutually disconnected, and driving circuits in the sub-pixels of the pixel units of the other rows are conducted with corresponding scanning signal lines and power supply lines.

Optionally, the mode selection module includes: the device comprises a first sub-mode selection module, a second sub-mode selection module and a third sub-mode selection module;

the first sub-mode selection module is connected to pixel electrodes of a plurality of sub-pixels with the same color in the plurality of rows of pixel units, and is configured to conduct the corresponding pixel electrodes mutually under the control of a first level signal of the switch control signal end and disconnect the corresponding pixel electrodes mutually under the control of a second level signal of the switch control signal end;

the second sub-mode selection module is connected to the driving circuits of the sub-pixels of the pixel units in the other rows, and is configured to disconnect the corresponding driving circuit from the scanning signal line under the control of a first level signal of the switch control signal terminal and to connect the corresponding driving circuit to the scanning signal line under the control of a second level signal of the switch control signal terminal;

the third sub-mode selection module is connected to the driving circuits of the sub-pixels of the pixel units in the rest rows and is configured to disconnect the corresponding driving circuit from the power line under the control of a first level signal of the switch control signal end; and under the control of a second level signal of the switch control signal end, conducting the corresponding driving circuit with the power line.

Optionally, along the column direction of the pixel units, three adjacent pixel units are one pixel unit group;

a first pixel unit, a second pixel unit and a third pixel unit are arranged in the same pixel unit group along the column direction; wherein each sub-pixel in the first pixel unit and the second pixel unit comprises a driving circuit; pixel electrodes in the same-color sub-pixels in the first pixel unit and the third pixel unit share one driving circuit;

in each pixel unit group, the same color sub-pixels in the first pixel unit and the second pixel unit are connected to one first sub-mode selection module.

Optionally, the first sub-mode selection module includes: a first switching transistor; and a first electrode and a second electrode of the first switching transistor are respectively and electrically connected with the corresponding pixel electrodes, and a control electrode of the first switching transistor is electrically connected with the switching control signal end.

Optionally, in a row of the pixel unit groups, sub-pixels in at least two second pixel units are connected to the same second sub-mode selection module; or the like, or, alternatively,

and the sub-pixels in each second pixel unit are connected with one second sub-mode selection module one by one.

Optionally, the sub-pixels in a row of the second pixel units are connected to one of the second sub-mode selection modules.

Optionally, the second sub-mode selection module includes: a second switching transistor; the first pole of the second switch transistor is electrically connected with the scanning signal line, the second pole of the second switch transistor is electrically connected with the driving circuit connected with the second sub-mode selection module, and the control pole of the second switch transistor is electrically connected with the switch control signal end.

Optionally, in a row of the pixel unit groups, the sub-pixels in at least two of the second pixel units are connected to one of the third sub-mode selection modules; or the like, or, alternatively,

and the sub-pixels in each second pixel unit are connected with one third sub-mode selection module one by one.

Optionally, all the sub-pixels in a row of the second pixel units are connected to the same third sub-mode selection module.

Optionally, the third sub-mode selection module includes: a third switching transistor; the first pole of the third switching transistor is electrically connected with the power line, the second pole of the third switching transistor is electrically connected with the driving circuit connected with the third sub-mode selection module, and the control pole of the third switching transistor is electrically connected with the switch control signal end.

Correspondingly, the embodiment of the invention also provides a display device which comprises any one of the display panels.

Correspondingly, an embodiment of the present invention further provides a method for driving any one of the display panels, including: a first drive mode and a second drive mode; wherein:

in the first driving mode, the mode selection module conducts pixel electrodes of a plurality of sub-pixels with the same color in the pixel units of a plurality of rows mutually under the control of a first level signal of a switch control signal end, and disconnects driving circuits in the sub-pixels of the pixel units of the other rows from corresponding scanning signal lines and power lines;

in the second driving mode, the mode selection module disconnects the pixel electrodes of a plurality of sub-pixels with the same color in the plurality of rows of pixel units from each other and connects the driving circuits in the sub-pixels of the remaining rows of pixel units with the corresponding scanning signal lines and power lines under the control of the second level signal of the switch control signal terminal.

Optionally, in the first driving mode, the first sub-mode selection module conducts the corresponding pixel electrodes to each other under the control of the first level signal of the switch control signal terminal; the second sub-mode selection module disconnects the corresponding driving circuit from the scanning signal line under the control of the first level signal of the switch control signal end; the third sub-mode selection module disconnects the corresponding driving circuit from the power line under the control of the first level signal of the switch control signal end;

in the second driving mode, the first sub-mode selection module disconnects the corresponding pixel electrodes from each other under the control of a second level signal of the switch control signal end; the second sub-mode selection module conducts the corresponding driving circuit with the scanning signal line under the control of a second level signal of the switch control signal end; and the third sub-mode selection module conducts the corresponding driving circuit with the power line under the control of the second level signal of the switch control signal end.

The invention has the following beneficial effects: according to the display panel provided by the embodiment of the invention, the mode selection module can disconnect the driving circuit electrically connected with the mode selection module from the scanning signal line and the power line respectively under the control of the first level signal of the switch control signal end, so that the driving circuit does not work. And the pixel electrodes electrically connected with the pixel electrodes are mutually conducted, so that the voltages input by the two pixel electrodes are the same, and the display brightness of the areas corresponding to the pixel electrodes is the same, thereby realizing the effect of reducing the power consumption. And through the mode selection module, under the control of a second level signal of the switch control signal end, the pixel electrodes electrically connected with the mode selection module can be mutually disconnected, and the driving circuits electrically connected with the mode selection module are respectively connected with the scanning signal line and the power line, so that each driving circuit can independently input voltage to the pixel electrodes, the brightness displayed in the area corresponding to each pixel electrode can be independently controlled, and the display effect of improving the color depth is further realized.

Drawings

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a driving circuit according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

FIG. 6 is a timing diagram of a circuit signal according to an embodiment of the present invention;

fig. 7 is a flowchart of a driving method of a display panel 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 of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. And the embodiments and features of the embodiments may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

It should be noted that the sizes and shapes of the figures in the drawings are not to be considered true scale, but are merely intended to schematically illustrate the present invention. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

Generally, for the sub-pixels of the same color in the pixel unit, the more gray scales can be realized, the richer the colors can be represented, that is, the higher the color depth can be displayed; as the gray scale that can be achieved is reduced, the color depth of the display is reduced.

An embodiment of the present invention provides a display panel, as shown in fig. 1 to 3, including pixel units 100 arranged in an array, a plurality of scan signal lines, and a plurality of power lines VDD; the pixel unit 100 includes a plurality of sub-pixels 110, each sub-pixel 110 including a pixel electrode 111; the sub-pixels 110 in at least a part of the pixel units 100 further include a driving circuit 112 electrically connected to the pixel electrodes 111; each row driving circuit 112 is correspondingly electrically connected with one scanning signal line and one power line VDD;

the display panel further includes a mode selection module 200, the mode selection module 200 being electrically connected to the pixel electrodes 111 in the sub-pixels 110 of the rows of pixel units 100;

for a plurality of rows of pixel units 100 connected to the same mode selection module 200, the driving circuits 112 in the sub-pixels 110 of some rows of pixel units 100 are directly electrically connected to the corresponding scanning signal line and the power line VDD, and the driving circuits 112 in the sub-pixels 110 of the rest rows of pixel units 100 are electrically connected to the corresponding scanning signal line and the power line VDD through the mode selection module 200;

a mode selection module 200 connected to the Switch control signal terminal Switch, and configured to, under control of the first level signal of the Switch control signal terminal Switch, turn on the pixel electrodes 111 of the sub-pixels 110 with the same color in a plurality of rows of pixel units 100 to each other, and turn off the driving circuits 112 in the sub-pixels 110 of the remaining rows of pixel units 100 from the corresponding scanning signal lines and the power supply line VDD; under the control of the second level signal of the Switch control signal terminal Switch, the pixel electrodes 111 of the sub-pixels 110 of the same color in the plurality of rows of pixel units 100 are disconnected from each other, and the driving circuits 112 in the sub-pixels 110 of the remaining rows of pixel units 100 are turned on with the corresponding scanning signal lines and the power supply line VDD.

According to the display panel provided by the embodiment of the invention, the mode selection module can disconnect the driving circuit electrically connected with the mode selection module from the scanning signal line and the power line respectively under the control of the first level signal of the switch control signal end, so that the driving circuit does not work. And the pixel electrodes electrically connected with the pixel electrodes are mutually conducted, so that the voltages input by the two pixel electrodes are the same, and the display brightness of the areas corresponding to the pixel electrodes is the same, thereby realizing the effect of reducing the power consumption. And through the mode selection module, under the control of a second level signal of the switch control signal end, the pixel electrodes electrically connected with the mode selection module can be mutually disconnected, and the driving circuits electrically connected with the mode selection module are respectively connected with the scanning signal line and the power line, so that each driving circuit can independently input voltage to the pixel electrodes, the brightness displayed in the area corresponding to each pixel electrode can be independently controlled, and the display effect of improving the color depth is further realized.

Also, when the Switch control signal terminal Switch loads the first level signal, the color depth of the sub-pixel 110 corresponding to the mode selection module 200 may be reduced.

In a specific implementation, all the pixel electrodes 111 in the display panel may have the same size and shape, or may have different sizes and shapes, and the size and shape of the pixel electrode 111 may be determined according to a practical application environment design, which is not limited herein. Hereinafter, the size and shape of all the pixel electrodes 111 in the display panel will be described.

In a specific implementation, there may be a plurality of scan signal lines in the display panel. As shown in fig. 1 to 3, two of the scanning signal lines are selected here: the Scan signal lines Scan1 and Scan signal lines Scan2 are described, and the circuit connection of the other Scan signal lines in the display panel may be substantially the same as those of the two Scan signal lines, which is not limited herein.

In one embodiment, the pixel unit 100 may include a plurality of sub-pixels of different colors, and as shown in fig. 4, the pixel unit 100 may include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. Thus, color mixing can be performed through red, green and blue to realize color display. Alternatively, the pixel unit 100 may also include a red sub-pixel R, a green sub-pixel G, a blue sub-pixel B, and a white sub-pixel, so that color display can be realized by mixing red, green, blue, and white. Of course, in practical applications, the light emitting color of the sub-pixel 110 in the pixel unit 100 can be determined according to practical application environments, and is not limited herein.

In specific implementation, as shown in fig. 1 to 3, the display panel further includes a first display voltage line FRP, a second display voltage line XFRP, a reference power line VSS, and a plurality of Data lines Data. A column of sub-pixels may correspond to one Data line Data. The driving circuit 112 may supply one of a signal of the first display voltage line FRP and a signal of the second display voltage line XFRP to the pixel electrode 111 according to a signal of the scanning signal line, a signal of the Data line Data, a signal of the power supply line VDD, and a signal of the reference power supply line VSS.

In particular implementation, as shown in fig. 3, the driving circuit 112 may include: first to eighth transistors T1-T8; a first electrode of the first transistor T1 is electrically connected to the Data line Data, a control electrode of the first transistor T1 is electrically connected to the scan signal line, and a second electrode of the first transistor T1 is electrically connected to the first node Q. A first pole of the second transistor T2 is electrically connected to the first node Q, a control pole of the second transistor T2 is electrically connected to the scan signal line, and a second pole of the second transistor T2 is electrically connected to the second pole of the third transistor T3. A first pole of the third transistor T3 is electrically connected to the scan signal line, a control pole of the third transistor T3 is electrically connected to the second node P, and a second pole of the third transistor T3 is electrically connected to the first pole of the fourth transistor T4. A control electrode of the fourth transistor T4 is electrically connected to the second node P, and a second electrode of the fourth transistor T4 is electrically connected to the reference power line VSS. A first pole of the fifth transistor T5 is electrically connected to the scan signal line, a control pole of the fifth transistor T5 is electrically connected to the first node Q, and a second pole of the fifth transistor T5 is electrically connected to the second node P. A first pole of the sixth transistor T6 is electrically connected to the second node P, a control pole of the sixth transistor T6 is electrically connected to the first node Q, and a second pole of the sixth transistor T6 is electrically connected to the reference power line VSS. A first pole of the seventh transistor T7 is electrically connected to the first display voltage line FRP, a control pole of the seventh transistor T7 is electrically connected to the second node P, and a second pole of the seventh transistor T7 is electrically connected to the pixel electrode 111. A first pole of the eighth transistor T8 is electrically connected to the pixel electrode 111, a control pole of the eighth transistor T8 is electrically connected to the first node Q, and a second pole of the eighth transistor T8 is electrically connected to the second display voltage line XFRP.

In concrete implementation, in the display panel provided by the embodiment of the invention, as shown in fig. 3, the first transistor T1, the fourth transistor T4, the sixth transistor T6, the seventh transistor T7 and the eighth transistor T8 may be N-type transistors, and the second transistor T2, the third transistor T3, the fourth transistor T4 and the fifth transistor T5 may be P-type transistors, although the types of the transistors in the driving circuit 112 are not limited thereto.

It should be noted that the operation process of the driving circuit 112 may be substantially the same as the operation process of the driving circuit 112 in the related art, and is not described herein again.

In specific implementation, the display panel includes an array substrate and an opposite substrate disposed opposite to each other, and a liquid crystal layer encapsulated between the array substrate and the opposite substrate. When voltages are respectively applied to the pixel electrode 111 and the common electrode, an electric field is generated between the pixel electrode 111 and the common electrode to drive liquid crystal molecules in the liquid crystal layer to move, so that the display panel displays. In the display panel provided by the embodiment of the invention, when the signal voltage of the first display voltage line FRP is supplied to the pixel electrode 111, the sub-pixel emits light. When the signal voltage on the second display voltage line XFRP is supplied to the pixel electrode 111, the sub-pixel does not emit light.

In a specific implementation, in the display panel provided in the embodiment of the present invention, as shown in fig. 2, the mode selection module 200 may include: a first sub-mode selection module 200-1, a second sub-mode selection module 200-2 and a third sub-mode selection module 200-3;

the first sub-mode selection module 200-1 is connected to the pixel electrodes 111 of the plurality of sub-pixels 110 having the same color in the plurality of rows of pixel units 100, and is configured to turn on the corresponding pixel electrodes 111 with each other under the control of a first level signal of the Switch control signal terminal Switch, and turn off the corresponding pixel electrodes 111 with each other under the control of a second level signal of the Switch control signal terminal Switch;

the second sub-mode selection module 200-2 is connected to the driving circuits 112 of the sub-pixels 110 of the pixel units 100 in the remaining rows, and is configured to disconnect the corresponding driving circuit 112 from the scanning signal line under the control of the first level signal of the Switch control signal terminal Switch, and to connect the corresponding driving circuit 112 to the scanning signal line under the control of the second level signal of the Switch control signal terminal Switch;

the third sub-mode selection block 200-3 is connected to the driving circuits 112 of the sub-pixels 110 of the remaining rows of pixel units 100, and is configured to disconnect the corresponding driving circuit 112 from the power line under the control of the first level signal of the Switch control signal terminal Switch; the corresponding driving circuit 112 is turned on with the power supply line under the control of the second level signal of the Switch control signal terminal Switch.

In the display panel provided in the embodiment of the present invention, by providing the second sub-mode selection module 200-2, the corresponding driving circuit 112 may be disconnected from the scanning signal line, that is, the signal of the scanning signal line is not provided to the corresponding driving circuit 112. And the corresponding driving circuit 112 may be disconnected from the power line VDD by the third sub-mode selection module 200-3, i.e., the voltage of the power line VDD is not supplied to the corresponding driving circuit 112. Since the corresponding driving circuit 112 does not operate when neither the signal of the scanning signal line nor the voltage of the power line VDD is supplied to the corresponding driving circuit 112, the pixel electrodes 111 in the sub-pixels 110 electrically connected to the first sub-mode selection module 200-1 can be conducted to each other by providing the first sub-mode selection module 200-1, so that the voltages on the pixel electrodes 111 are the same, and the light emitting conditions of the sub-pixels 110 are the same. Alternatively, the corresponding driving circuit 112 may be turned on with the scanning signal line by the second sub-mode selection block 200-2, the corresponding driving circuit 112 may be turned on with the power supply line VDD by the third sub-mode selection block 200-3, and the pixel electrodes 111 may be turned off with each other by the first sub-mode selection block 200-1, so that the corresponding driving circuit 112 may be normally operated to make the sub-pixels 110 emit light, respectively.

In a specific implementation, the number of the first sub-mode selection module 200-1, the second sub-mode selection module 200-2, and the third sub-mode selection module 200-3 that one mode selection module 200 may include may be determined according to an actual need, and is not limited herein.

In practical implementation, in the display panel provided in the embodiment of the present invention, as shown in fig. 2 and fig. 4, three adjacent pixel units 100 are taken as one pixel unit group 10 along the column direction F1 of the pixel units 100;

the same pixel cell group 10 has a first pixel cell 100-1, a second pixel cell 100-2, and a third pixel cell 100-3 along the column direction F1; wherein each sub-pixel 110 in the first pixel unit 100-1 and the second pixel unit 100-2 includes a driving circuit 112; also, the pixel electrodes 111 in the same-color sub-pixels 110 in the first pixel unit 100-1 and the third pixel unit 100-3 share one driving circuit 112;

in each pixel unit group 10, the same color sub-pixel 110 in the first pixel unit 100-1 and the second pixel unit 100-2 is connected to a first sub-mode selection module 200-1.

In practical implementation, the pixel electrodes 111 in the same-color sub-pixels 110 in the first pixel unit 100-1 and the third pixel unit 100-3 share one driving circuit 112, that is, the voltages applied to the pixel electrodes 111 in the same-color sub-pixels 110 in the first pixel unit 100-1 and the third pixel unit 100-3 are the same, and since the size and the shape of the pixel electrodes 111 are the same, the light emission of the first pixel unit 100-1 and the third pixel unit 100-3 is always the same. For example, the sub-pixels in the third pixel unit 100-3 are not provided with the driving circuit, but share the driving circuit with the first pixel unit. Specifically, the pixel electrodes 111 in the red sub-pixel R in the first pixel unit 100-1 and the third pixel unit 100-3 share one driving circuit 112, the pixel electrodes 111 in the green sub-pixel G in the first pixel unit 100-1 and the third pixel unit 100-3 share one driving circuit 112, and the pixel electrodes 111 in the blue sub-pixel B in the first pixel unit 100-1 and the third pixel unit 100-3 share one driving circuit 112.

In particular, the first pixel unit 100-1, the second pixel unit 100-2, and the third pixel unit 100-3 are sequentially arranged along the column direction F1 (e.g., arrow direction of F1) to improve the display uniformity.

In practical implementation, along the column direction F1 of the pixel unit 100, one pixel unit group 10 may also include four, five or more adjacent pixel units 100, and the number of the pixel units 100 included in one pixel unit group 10 may be determined according to the design of the practical application environment, and is not limited herein. Accordingly, the same pixel cell group 10 may also have a fourth pixel cell, a fifth pixel cell, and so on in the column direction. The sub-pixels 110 include pixel units 100 of a driving circuit 112, pixel units 100 in which pixel electrodes 111 in the same-color sub-pixels 110 share one driving circuit 112, and the same-color sub-pixels 110 are connected to the pixel units 100 of one first sub-mode selection module 200-1, and specifically, which pixel units may be designed according to an actual application environment, which is not limited herein.

In a specific implementation, as shown in fig. 5, a driving circuit may be provided for each sub-pixel in each pixel unit. The same color sub-pixel in two adjacent rows of pixel units corresponds to a first sub-mode selection module. This may reduce power consumption when displaying a picture with a lower resolution.

In a specific implementation manner, in the display panel provided in the embodiment of the present invention, as shown in fig. 5, the first sub-mode selection module 200-1 may include: a first switching transistor M1; a first pole and a second pole of the first switching transistor M1 are electrically connected to the corresponding pixel electrode 111, respectively, and a control pole of the first switching transistor M1 is electrically connected to the Switch control signal terminal Switch.

Further, in practical implementation, the first switching transistor M1 can turn on the pixel electrodes 111 of the same color in the first pixel unit 100-1 and the second pixel unit 100-2 under the control of the first level signal of the switching control signal terminal Switch. And, the first switching transistor M1 may turn off the pixel electrodes 111 of the same color in the first pixel unit 100-1 and the second pixel unit 100-2 under the control of the second level signal of the switching control signal terminal Switch.

In practical implementation, in the display panel provided in the embodiment of the present invention, in a row of the pixel unit groups 10, the sub-pixels in at least two second pixel units 100-2 may be connected to the same second sub-mode selection module. For example, as shown in fig. 2 to 5, the sub-pixels in the row of the second pixel unit 100-2 may be connected to a second sub-mode selection module. Alternatively, the sub-pixels in the two second pixel units 100-2 may correspond to one second sub-mode selection module 200-2. Alternatively, the sub-pixels in each second pixel unit 100-2 may be connected to one second sub-mode selection module 200-2 one by one. Of course, the number of the second pixel units 100-2 in a row of pixel units 100, where a sub-pixel corresponds to a second sub-mode selection module 200-2, may be determined by design according to the actual application environment, and is not limited herein.

In a specific implementation, in the display panel provided in the embodiment of the present invention, as shown in fig. 5, the second sub-mode selecting module 200-2 may include: a second switching transistor M2; a first pole of the second switching transistor M2 is electrically connected to the scan signal line, a second pole of the second switching transistor M2 is electrically connected to the driving circuit 112 connected to the second sub-mode selection module, and a control pole of the second switching transistor M2 is electrically connected to the Switch control signal terminal Switch.

Further, in practical implementation, the second switching transistor M2 can disconnect the Scan signal line Scan2 from the corresponding control electrode of the first transistor T2 and the control electrode of the second transistor T2 in the driving circuit 112 under the control of the first level signal of the switching control signal terminal Switch. And the second switching transistor M2 may turn on the Scan signal line Scan2 and the corresponding control electrode of the first transistor T2 and the control electrode of the second transistor T2 in the driving circuit 112 under the control of the second level signal of the Switch control signal terminal Switch.

In practical implementation, in the display panel provided in the embodiment of the present invention, as shown in fig. 2 to fig. 5, in one row of the pixel unit group 10, the sub-pixels in at least two second pixel units 100-2 may be connected to one third sub-mode selection module 200-3, and exemplarily, as shown in fig. 2 and fig. 5, the sub-pixels in all the second pixel units 100-2 in one row of the pixel unit group 10 are connected to one third sub-mode selection module 200-3; alternatively, the sub-pixels in all the second pixel units 100-2 in the display panel may correspond to one third sub-mode selection module 200-3. Alternatively, the sub-pixels in each second pixel unit 100-2 may be connected to one third sub-mode selection module 200-3. Of course, the number of the second pixel units 100-2 of the sub-pixel corresponding to the third sub-mode selection module 200-3 may be determined according to the actual application environment, and is not limited herein.

In a specific implementation, in the display panel provided in the embodiment of the present invention, as shown in fig. 2 and fig. 3, the third sub-mode selecting module 200-3 may include: a third switching transistor M3; a first pole of the third switching transistor M3 is electrically connected to the power line, a second pole of the third switching transistor M3 is electrically connected to the driving circuit 112 connected to the third sub-mode selection block 200-3, and a control pole of the third switching transistor M3 is electrically connected to the Switch control signal terminal Switch.

Further, in a specific implementation, the third switching transistor M3 may disconnect the power line VDD from the first pole of the third transistor T3 and the first pole of the fifth transistor T5 in the corresponding driving circuit 112 under the control of the first level signal of the switching control signal terminal Switch. And the third switching transistor M3 may turn on the power line VDD and the first electrode of the third transistor T3 and the first electrode of the fifth transistor T5 of the corresponding driving circuit 112 under the control of the second level signal of the Switch control signal terminal Switch.

In specific implementation, in the display panel provided in the embodiment of the invention, as shown in fig. 2, the first switching transistor M1 may be a P-type transistor, and the second switching transistor M2 and the third switching transistor M3 may be N-type transistors. Of course, the type of the transistor is not limited thereto.

Specifically, in the display panel provided in the embodiment of the present invention, the P-type transistor is turned on by a low level signal and turned off by a high level signal; the N-type transistor is turned on under the action of a high-level signal and is turned off under the action of a low-level signal.

In a specific implementation, in the display panel provided in the embodiment of the present invention, each Transistor may be a Thin Film Transistor (TFT) or a Metal Oxide Semiconductor field effect Transistor (MOS), which is not limited herein. Further, the control electrode of each transistor is used as a gate, the first electrode of each transistor is used as a source, and the second electrode of each transistor is used as a drain, or the first electrode of each transistor is used as a drain and the second electrode is used as a source, depending on the type of each transistor and the signal of the control electrode of each transistor, which is not particularly distinguished herein.

The following describes the operation of the display panel according to the embodiment of the present invention with reference to the circuit timing diagram shown in fig. 6 by taking the display panel shown in fig. 2 as an example. Wherein, F1 represents the stage of the display panel working in the first driving mode, and F2 represents the stage of the display panel working in the second driving mode. The low level of the Switch control signal terminal Switch represents a first level signal and the high level represents a second level signal. For example, one pixel unit 100 includes a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B, and one pixel unit group 10 includes a first pixel unit 100-1, a second pixel unit 100-2, and a third pixel unit 100-3 along a column direction.

In stage F2, when the display panel operates in the second driving mode, the Switch control signal terminal Switch is applied with a high signal, the first Switch transistor M1 is turned off, and the second Switch transistor M2 and the third Switch transistor M3 are turned on. In one pixel cell group 10, the pixel electrodes 111 in the same color sub-pixels in the first pixel cell 100-1 and the second pixel cell 100-2 are disconnected from each other, and the first pixel cell 100-1 and the second pixel cell 100-2 independently emit light. Taking the red sub-pixel R in one pixel unit group 10 as an example, in one frame display time, the red sub-pixel R in the first pixel unit 100-1 and the red sub-pixel R in the second pixel unit 100-2 do not emit light, and then the gray scale corresponding to the red color is zero gray scale. In one frame of display time, the red sub-pixel R in the first pixel unit 100-1 does not emit light, and the red sub-pixel R in the second pixel unit 100-2 emits light, so that the gray level corresponding to the red color is 1/3 gray levels. In one frame of display time, the red sub-pixel R in the first pixel unit 100-1 emits light, and the red sub-pixel R in the second pixel unit 100-2 does not emit light, so that the gray level corresponding to the red color is 2/3 gray levels. In one frame of display time, the red sub-pixel R in the first pixel unit 100-1 emits light, and the red sub-pixel R in the second pixel unit 100-2 also emits light, so that the gray level corresponding to the red color is the brightest gray level. That is, in one pixel unit group 10, the red sub-pixel R can have 4 gray levels from the dark state to the bright state. Similarly, in one pixel unit group 10, the green sub-pixel G may have 4 gray scales from the dark state to the bright state, and the blue sub-pixel B may have 4 gray scales from the dark state to the bright state. Thus, when the high-level signal is applied to the Switch control signal terminal Switch, one pixel cell group 10 can display 64 colors, which are displayed with a higher color depth.

In stage F1, when the display panel operates in the first driving mode and the Switch control signal terminal Switch loads a low level signal, the first Switch transistor M1 is turned on, and the second Switch transistor M2 and the third Switch transistor M3 are both turned off. In one pixel unit group 10, the pixel electrodes 111 in the same color sub-pixels in the first pixel unit 100-1 and the second pixel unit 100-2 are conducted with each other, so that the voltages applied to the pixel electrodes 111 in the same color sub-pixels in the first pixel unit 100-1, the third pixel unit 100-3 and the second pixel unit 100-2 are the same, that is, the light emission of each pixel unit is the same. Then, in one sub-pixel area 120, there are two light emitting situations that the sub-pixels with the same color in the first pixel unit 100-1, the second pixel unit 100-2 and the third pixel unit 100-3 all emit light, and that the sub-pixels with the same color in the first pixel unit 100-1, the second pixel unit 100-2 and the third pixel unit 100-3 do not emit light. Taking the red sub-pixel R as an example, in one frame of display time, the red sub-pixel R in the first pixel unit 100-1, the second pixel unit 100-2 and the third pixel unit 100-3 does not emit light, and then the gray scale corresponding to the red color is zero gray scale. In one frame of display time, the red sub-pixel R in the first pixel unit 100-1, the second pixel unit 100-2 and the third pixel unit 100-3 all emit light, and the gray level corresponding to red is the brightest gray level. That is, in one pixel unit group 10, the red sub-pixel R can have 2 gray levels from the dark state to the bright state. Similarly, in one pixel unit group 10, the green sub-pixel G may have 2 gray scales from the dark state to the bright state, and the blue sub-pixel B may have 2 gray scales from the dark state to the bright state. Thus, when the high-level signal is applied to the Switch control signal terminal Switch, one pixel cell group 10 can display 8 colors, which are displayed with a lower color depth. Also, since the driving circuit 112 in the second pixel unit 100-2 does not operate, power consumption can be reduced.

In summary, when the display panel operates in the first driving mode, each pixel unit group 10 can display 8 colors, so that the display panel operates at a lower color depth (i.e. the first color depth), and thus the power consumption can be reduced. The display panel operates in the second driving mode, and each pixel cell group 10 can display 64 colors. Thus, the display panel can work under a higher color depth (namely, the second color depth), and the display effect of the display panel can be improved.

Based on the same inventive concept, an embodiment of the present invention further provides a method for driving any one of the display panels provided by the embodiments of the present invention, including: a first drive mode and a second drive mode; wherein:

s10, in the first driving mode, under the control of the first level signal of the switch control signal end, the mode selection module conducts the pixel electrodes of a plurality of sub-pixels with the same color in a plurality of rows of pixel units mutually, and disconnects the driving circuits in the sub-pixels of the other rows of pixel units from the corresponding scanning signal lines and power lines;

and S20, in the second driving mode, under the control of the second level signal of the switch control signal terminal, the mode selection module disconnects the pixel electrodes of a plurality of sub-pixels with the same color in a plurality of rows of pixel units from each other, and connects the driving circuits in the sub-pixels of the other rows of pixel units with the corresponding scanning signal lines and power lines.

In practical implementation, in the driving method provided by the embodiment of the invention, as shown in fig. 7, the display panel may be performed first in step S10, and then in step S20. Alternatively, the display panel may be subjected to step S20 first and then to step S10. In practical applications, the design may be determined according to practical application environments, and is not limited herein.

In specific implementation, in the driving method provided in the embodiment of the present invention, in the first driving mode, the first sub-mode selecting module 200-1 conducts the corresponding pixel electrodes 111 with each other under the control of the first level signal of the Switch control signal terminal Switch; the second sub-mode selection module 200-2 disconnects the corresponding driving circuit 112 from the scanning signal line under the control of the first level signal of the Switch control signal terminal Switch; the third sub-mode selecting module 200-3 disconnects the corresponding driving circuit 112 from the power line VDD under the control of the first level signal of the Switch control signal terminal Switch;

in the second driving mode, the first sub-mode selection module 200-1 disconnects the corresponding pixel electrodes 111 from each other under the control of the second level signal of the Switch control signal terminal Switch; the second sub-mode selection module 200-2 conducts the corresponding driving circuit 112 with the scanning signal line under the control of the second level signal of the Switch control signal terminal Switch; the third sub-mode selecting module 200-3 turns on the corresponding driving circuit 112 and the power line VDD under the control of the second level signal of the Switch control signal terminal Switch.

In particular implementations, the second color depth is greater than the first color depth. Of course, in practical applications, the second color depth and the first color depth may be determined according to the practical application environment, and are not limited herein.

The present invention will be described in detail with reference to specific examples. It should be noted that the present embodiment is intended to better explain the present invention, but not to limit the present invention.

The operation of the display panel according to the embodiment of the present invention is described below with reference to a circuit timing diagram. In the following description, 1 represents a high level, and 0 represents a low level. It should be noted that 1 and 0 are logic levels, which are only used to better explain the specific operation of the embodiment of the present invention, and not specific voltage values.

The following describes the operation of the display panel provided by the embodiment of the present invention with reference to the circuit signal timing diagram shown in fig. 6, by taking the display panel shown in fig. 2 and the driving circuit 112 shown in fig. 3 as an example. The signal of the power line VDD is at a high level, and the signal of the reference power line VSS is at a low level. Take the red sub-pixel R in the pixel unit group 10 as an example. The first pixel unit 100-1 and the third pixel unit 100-3 emit light in the same manner.

At stage F1, when the display panel is in the first driving mode and Switch is equal to 0, the first switching transistor M1 is turned on, and the second switching transistor M2 and the third switching transistor M3 are turned off. Since the first switching transistor M1 is turned on, the pixel electrodes 111 in the red sub-pixels R in the first pixel unit 100-1 and the second pixel unit 100-2 are turned on, and the voltages applied to the pixel electrodes 111 in the red sub-pixels R in the first pixel unit 100-1, the second pixel unit 100-2, and the third pixel unit 100-3 are the same. Since the second switching transistor M2 and the third switching transistor M3 are turned off, the driving circuit 112 of the red sub-pixel R in the second pixel unit 100-2 is disconnected from the Scan signal line Scan2 and the power supply line VDD. The driving circuit 112 of the red sub-pixel R in the second pixel unit 100-2 is conducted with the Scan signal line Scan1 and the power supply line VDD.

For the red sub-pixel R in the second pixel unit 100-2, since the second switching transistor M2 is turned off, the signal of the Scan signal line Scan2 is not supplied to the gates of the first transistor T1 and the second transistor T2. Since the third switching transistor M3 is turned off, the second pole of the third switching transistor M3 is in a floating state, and both the first node Q and the second node P cannot maintain a high level, and thus both the seventh transistor T7 and the eighth transistor T8 in the red subpixel R in the second pixel unit 100-2 are turned off, that is, the driving circuit 112 in the red subpixel R in the second pixel unit 100-2 cannot supply the voltage of the first display voltage line FRP or the voltage of the second display voltage line XFRP to the pixel electrode 111.

For the red sub-pixel R in the first pixel unit 100-1, the signal on the scanning signal line Scan1, the signal on the Data line Data, and the signal on the power supply line VDD are input into the driving circuit 112, so that the driving circuit 112 can supply one of the signal of the first display voltage line FRP and the signal of the second display voltage line XFRP to the pixel electrode 111.

For example, if the signal of the first display voltage line FRP is supplied to the pixel electrode 111, since the pixel electrodes 111 in the red sub-pixels R in the first pixel unit 100-1 and the second pixel unit 100-2 are turned on, the voltages of the pixel electrodes 111 in the red sub-pixels R in the first pixel unit 100-1, the second pixel unit 100-2, and the third pixel unit 100-3 are all the voltage of the signal of the first display voltage line FRP, and the red sub-pixels R in the first pixel unit 100-1, the second pixel unit 100-2, and the third pixel unit 100-3 all emit light, so that the gray scale corresponding to the red color is the brightest gray scale.

If the signal of the second display voltage line XFRP is provided to the pixel electrode 111, since the pixel electrodes 111 in the red sub-pixels R in the first pixel unit 100-1 and the second pixel unit 100-2 are conducted with each other, the voltages of the pixel electrodes 111 in the red sub-pixels R in the first pixel unit 100-1, the second pixel unit 100-2, and the third pixel unit 100-3 are all the voltages of the signal of the second display voltage line XFRP, and the red sub-pixels R in the first pixel unit 100-1, the second pixel unit 100-2, and the third pixel unit 100-3 do not emit light, so that the gray scale corresponding to the red color is zero gray scale.

The remaining color sub-pixel regions are similar, and are not described herein. This makes it possible to realize 8 colors for the pixel cell group 10.

At stage F2, the display panel is in the second driving mode, Switch is 1, the first switching transistor M1 is turned off, and the second switching transistor M2 and the third switching transistor M3 are turned on. Since the first switching transistor M1 is turned off, the pixel electrodes 111 in the red sub-pixels R in the first and second pixel units 100-1 and 100-2 are disconnected from each other. Since the second and third switching transistors M2 and M3 are turned on, the driving circuit 112 of the red sub-pixel R in the second pixel unit 100-2 is turned on with the Scan signal line Scan2 and the power supply line VDD, and the signal of the Scan signal line Scan2 and the signal of the power supply line VDD are supplied to the control electrodes of the first and second transistors T1 and T2. The red sub-pixels R in the first and second pixel units 100-1 and 100-2 sequentially emit light.

Here, a signal on the scanning signal line Scan1, a signal on the Data line Data, and a signal on the power supply line VDD are input to the driving circuit 112 of the red sub-pixel R in the first pixel unit 100-1, so that the driving circuit 112 can supply one of a signal of the first display voltage line FRP and a signal of the second display voltage line XFRP to the pixel electrode 111. After that, the signal on the scanning signal line Scan2, the signal on the Data line Data, and the signal on the power supply line VDD are input to the driving circuit 112 of the red sub-pixel R in the first pixel unit 100-1, so that the driving circuit 112 can supply one of the signal of the first display voltage line FRP and the signal of the second display voltage line XFRP to the pixel electrode 111. Thereby sequentially emitting light to the red subpixels R in the first and second pixel units 100-1 and 100-2.

For example, if the signal of the first display voltage line FRP is supplied to the pixel electrode 111 in the red sub-pixel R in the first pixel unit 100-1, and the signal of the first display voltage line FRP is supplied to the pixel electrode 111 in the red sub-pixel R in the second pixel unit 100-2, the red sub-pixels R in the first pixel unit 100-1, the second pixel unit 100-2, and the third pixel unit 100-3 all emit light, so that the gray scale corresponding to the red color is the brightest gray scale.

If the signal of the second display voltage line XFRP is supplied to the pixel electrode 111 in the red sub-pixel R in the first pixel unit 100-1, the red sub-pixel R in the first pixel unit 100-1 does not emit light. In the red sub-pixel R in the second pixel unit 100-2, the signal of the first display voltage line FRP is supplied to the pixel electrode 111, and the red sub-pixel R in the second pixel unit 100-2 emits light, so that the gray scale corresponding to the red color is 1/3 gray scale.

If the signal of the first display voltage line FRP is supplied to the pixel electrode 111 in the red subpixel R in the first pixel unit 100-1, the red subpixel R in the first pixel unit 100-1 emits light. In the red sub-pixel R in the second pixel unit 100-2, the signal of the second display voltage line XFRP is supplied to the pixel electrode 111, the red sub-pixel R in the second pixel unit 100-2 does not emit light, and the red sub-pixels R in the first pixel unit 100-1 and the third pixel unit 100-3 emit light, so that the gray scale corresponding to the red color is 2/3 gray scale.

If the signal of the second display voltage line XFRP is supplied to the pixel electrode 111 in the red sub-pixel R in the first pixel unit 100-1, the red sub-pixel R in the first pixel unit 100-1 does not emit light. In the red sub-pixel R in the second pixel unit 100-2, the signal of the second display voltage line XFRP is provided to the pixel electrode 111, and then the red sub-pixel R in the first pixel unit 100-1, the second pixel unit 100-2, and the third pixel unit 100-3 do not emit light, so that the gray scale corresponding to the red color is zero gray scale.

The remaining color sub-pixel regions are similar, and are not described herein. This makes it possible to realize 64 colors for the pixel cell group 10.

Based on the same inventive concept, embodiments of the present invention further provide a display device, including any one of the display panels provided in the present invention, and specific implementation thereof can refer to implementation processes of the display panel, and details of the same are omitted. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A display panel is characterized by comprising pixel units arranged in an array, a plurality of scanning signal lines and a plurality of power lines; the pixel unit comprises a plurality of sub-pixels, and each sub-pixel comprises a pixel electrode; at least part of the sub-pixels in the pixel unit further comprise a driving circuit electrically connected with the pixel electrode; the driving circuit of each row is correspondingly and electrically connected with one scanning signal line and one power line;

2. The display panel of claim 1, wherein the mode selection module comprises: the device comprises a first sub-mode selection module, a second sub-mode selection module and a third sub-mode selection module;

3. The display panel according to claim 2, wherein three adjacent pixel cells are one pixel cell group in a column direction of the pixel cells;

a first pixel unit, a second pixel unit and a third pixel unit are arranged in the same pixel unit group along the column direction; each sub-pixel in the first pixel unit and the second pixel unit comprises a driving circuit respectively; pixel electrodes in the same-color sub-pixels in the first pixel unit and the third pixel unit share one driving circuit;

4. The display panel of claim 3, wherein the first sub-mode selection module comprises: a first switching transistor; and a first electrode and a second electrode of the first switching transistor are respectively and electrically connected with the corresponding pixel electrodes, and a control electrode of the first switching transistor is electrically connected with the switching control signal end.

5. The display panel according to claim 3, wherein in a row of the pixel cell groups, the sub-pixels in at least two of the second pixel cells are connected to the same second sub-mode selection module; or the like, or, alternatively,

6. The display panel of claim 5, wherein the sub-pixels in a row of the second pixel units are connected to one of the second sub-mode selection modules.

7. The display panel of claim 5 or 6, wherein the second sub-mode selection module comprises: a second switching transistor; the first pole of the second switch transistor is electrically connected with the scanning signal line, the second pole of the second switch transistor is electrically connected with the driving circuit connected with the second sub-mode selection module, and the control pole of the second switch transistor is electrically connected with the switch control signal end.

8. The display panel according to claim 5, wherein in a row of the pixel cell groups, the sub-pixels in at least two of the second pixel cells are connected to one of the third sub-mode selection blocks; or the like, or, alternatively,

9. The display panel of claim 8, wherein all sub-pixels in a row of the second pixel units are connected to the same third sub-mode selection module.

10. The display panel of claim 8 or 9, wherein the third sub-mode selection module comprises: a third switching transistor; the first pole of the third switching transistor is electrically connected with the power line, the second pole of the third switching transistor is electrically connected with the driving circuit connected with the third sub-mode selection module, and the control pole of the third switching transistor is electrically connected with the switch control signal end.

11. A display device characterized by comprising the display panel according to any one of claims 1 to 10.

12. A driving method of the display panel according to any one of claims 1 to 10, comprising: a first drive mode and a second drive mode; wherein:

13. The method of driving a display panel according to claim 12, wherein in the first driving mode, the first sub-mode selecting module turns on the corresponding pixel electrodes with each other under the control of a first level signal of the switch control signal terminal; the second sub-mode selection module disconnects the corresponding driving circuit from the scanning signal line under the control of the first level signal of the switch control signal end; the third sub-mode selection module disconnects the corresponding driving circuit from the power line under the control of the first level signal of the switch control signal end;