CN116844462A - Display panel, driving method thereof and display device - Google Patents

Abstract

The embodiment of the invention discloses a display panel, a driving method thereof and a display device. The display panel includes a folding area and a non-folding area; the display panel also comprises a plurality of sub-pixels, a plurality of first driving modules and a plurality of second driving modules; the at least one first driving module and the at least one second driving module are correspondingly connected with the same sub-pixel of the folding area, and the first driving module and the second driving module are used for driving the sub-pixel of the folding area to emit light. According to the scheme, a double-drive or multi-drive design is adopted for each sub-pixel of the display panel in the folding area, so that when the drive of one drive module (such as a second drive module) fails, the sub-pixel in the folding area can normally emit light under the drive of the other drive module (such as a first drive module).

Description

Display panel, driving method thereof and display device

Technical Field

The embodiment of the invention relates to the technical field of display, in particular to a display panel, a driving method thereof and a display device.

Background

With the development of display panels, the proportion of mobile phone display screens is larger and the frames are narrower. Particularly, portable display devices such as mobile phones are increasingly being developed and applied to portability. Therefore, the portable folding screen is popular because of the large size of the screen application and convenient carrying. However, after a plurality of times of bending, a problem of poor display in the bending display area is likely to occur.

Disclosure of Invention

The embodiment of the invention provides a display panel, a driving method thereof and a display device, which are used for solving the problem that the display panel is damaged due to folding and poor in display.

According to an aspect of the present invention, there is provided a display panel including a folding area and a non-folding area;

the display panel also comprises a plurality of sub-pixels, a plurality of first driving modules and a plurality of second driving modules;

the at least one first driving module and the at least one second driving module are correspondingly connected with the same sub-pixel of the folding area, and the first driving module and the second driving module are used for driving the sub-pixel of the folding area to emit light.

Optionally, the display panel further includes a third driving module; the third driving module is arranged in the non-folding area;

the third driving module is correspondingly connected with the sub-pixels of the non-folding area and is used for driving the sub-pixels of the non-folding area to emit light.

Optionally, all the first driving modules are arranged in the non-folding area; all the second driving modules are arranged in the folding area;

optionally, the non-folding region is located at two opposite sides of the folding region along the first direction, and the plurality of first driving modules are symmetrically disposed about the folding region.

Optionally, the non-folded region comprises a first region and a second region; the first area is arranged between the second area and the folding area;

the third driving module is arranged in the first area and the second area, and the first driving module is inserted between the third driving modules in the first area;

optionally, the first driving modules and the third driving modules are alternately arranged along the first direction in the first region;

optionally, the display panel further includes a plurality of data lines arranged along a first direction and extending along a second direction, the first direction intersecting the second direction;

optionally, the first driving module and the third driving module are electrically connected to different data lines;

optionally, a column of the first driving modules is electrically connected with the same data line; a row of third driving modules are electrically connected with the same data line, and the row direction is parallel to the second direction;

optionally, the first driving module and the second driving module are electrically connected to different data lines;

alternatively, the non-folded region includes a third region and a fourth region; the third area is arranged between the fourth area and the folding area;

the third driving module is arranged in the fourth area, and the first driving module is arranged in the third area.

Optionally, the display panel further includes a substrate, and the sub-pixels, the first driving module, the second driving module, and the third driving module are located on the substrate;

the area of the orthographic projection of the first driving module on the substrate is smaller than that of the orthographic projection of the third driving module on the substrate;

and/or the area of the orthographic projection of the second driving module on the substrate is smaller than the area of the orthographic projection of the third driving module on the substrate;

optionally, the dimension of the first driving module along the first direction is smaller than the dimension of the third driving module along the first direction; and/or the dimension of the second driving module along the first direction is smaller than the dimension of the third driving module along the first direction; the first direction is parallel to the display surface when the display panel is unfolded.

Optionally, the line width of the wiring in the first driving module is smaller than the line width of the wiring in the third driving module;

and/or the line width of the wiring in the second driving module is smaller than the line width of the wiring in the third driving module;

and/or the line distance between the wires in the first driving module is smaller than the line distance between the wires in the third driving module;

and/or the line distance between the wires in the second driving module is smaller than the line distance between the wires in the third driving module.

Optionally, the first driving module and the second driving module electrically connected with the same sub-pixel of the folding region are used for providing driving current for the sub-pixel of the folding region simultaneously or in a time sharing manner;

optionally, one of the first and second driving modules electrically connected to the same sub-pixel of the folding region is used to provide a driving current to the sub-pixel at least when the other is damaged;

optionally, the first driving module and the second driving module electrically connected with the same sub-pixel of the folding region are used for simultaneously providing driving current for the sub-pixel of the folding region in a first period;

one of the first driving module and the second driving module electrically connected with the same sub-pixel of the folding region is used for independently providing driving current for the sub-pixel of the folding region in a second period;

the driving currents provided to the sub-pixels of the folding region are the same under the same gray scale brightness in the first period and the second period.

According to another aspect of the present invention, there is also provided a display device including the display panel of the embodiment of the present invention.

Optionally, the display panel further includes a third driving module; the third driving module is arranged in the non-folding area;

the third driving module is correspondingly connected with the sub-pixels of the non-folding area and is used for driving the sub-pixels of the non-folding area to emit light;

the display device further comprises a first driving chip and a second driving chip, the first driving module and the second driving module are connected with the first driving chip, and the third driving module is connected with the second driving chip;

the first driving chip is used for controlling the first driving module and the second driving module to provide driving current for the sub-pixels of the folding area, and the second driving chip is used for controlling the third driving module to provide driving current for the sub-pixels of the non-folding area.

According to another aspect of the present invention, there is also provided a driving method of a display panel including a folding area and a non-folding area; the display panel also comprises a plurality of sub-pixels, a plurality of first driving modules and a plurality of second driving modules;

the first driving module and the second driving module are respectively used for driving the sub-pixels of the folding area to emit light;

the driving method of the display panel comprises the following steps:

the first driving module and the second driving module supply driving current to the sub-pixels of the folding region simultaneously or in a time-sharing manner.

According to the display panel provided by the embodiment of the invention, each first driving module and each second driving module are correspondingly connected with the same sub-pixel of the folding area, so that the first driving module and the second driving module are used for driving the sub-pixel of the folding area to emit light. Therefore, compared with the single-driving design adopted by each sub-pixel of the display panel in the folding area in the prior art, the multi-driving (for example, double-driving) design is adopted by the scheme for each sub-pixel of the display panel in the folding area, so that when the driving of one driving module (for example, the second driving module) fails, the sub-pixel in the folding area can normally emit light under the driving of the other driving module (for example, the first driving module).

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

fig. 2 is a schematic top view of another display panel according to an embodiment of the invention;

fig. 3 is a schematic top view of another display panel according to an embodiment of the invention;

fig. 4 is a schematic top view of another display panel according to an embodiment of the invention;

fig. 5 is a schematic circuit diagram of a first driving module (a second driving module/a third driving module) according to an embodiment of the present invention;

fig. 6 is a schematic circuit diagram of a first driving module and a second driving module connected to a subpixel in a folding region according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The embodiment of the invention provides a structural schematic diagram of a display panel, and fig. 1 is a schematic top view structural diagram of the display panel provided by the embodiment of the invention. As shown in fig. 1, the display panel includes a folding area 10 and a non-folding area 20. The folding area 10 is a display area of the display panel that needs to be folded, and the non-folding area 20 is a display area of the display panel that does not need to be folded. The first direction X may be perpendicular to the second direction Y, and may be parallel to the display surface when the display panel is unfolded.

Fig. 2 is a schematic top view of another display panel according to an embodiment of the invention. As shown in fig. 2, the display panel further includes a plurality of sub-pixels, a plurality of first driving modules 110 and a plurality of second driving modules 120; wherein, at least one first driving module 110 and at least one second driving module 120 are respectively connected with the same sub-pixel of the folding region 10, and the first driving module 110 and the second driving module 120 are respectively used for driving the sub-pixel of the folding region 10 to emit light.

Specifically, the display driving circuit is connected with the sub-pixels of the display panel, and can drive the sub-pixels to emit light, so that the display panel can display pictures. In the embodiment of the present invention, the first driving module 110 and the second driving module 120 are two driving modules in parallel, the first driving module 110 can drive the sub-pixels to emit light, and the second driving module 120 can also drive the same sub-pixels to emit light. The driving sub-pixel of the first driving module 110 (corresponding to the mark B in the first driving module 110) or the second driving module 120 (corresponding to the mark B in the second driving module 120) correspondingly connected to the same sub-pixel (e.g., the red sub-pixel, not shown) of the folding area 10 may make the sub-pixel emit blue light, and the driving sub-pixel of the first driving module 110 (corresponding to the mark R in the first driving module 110) or the second driving module 120 (corresponding to the mark R in the second driving module 120) correspondingly connected to the same sub-pixel (corresponding to the mark G in the first driving module 110) or the second driving module 120 (corresponding to the mark G in the second driving module 120) of the folding area 10 may make the sub-pixel emit red light.

Therefore, each sub-pixel of the display panel in the folding area 10 adopts a dual driving design, that is, each sub-pixel of the folding area 10 is driven by two independent driving modules, that is, each sub-pixel of the folding area 10 is electrically connected to both a first driving module 110 and a second driving module 120. When one driving module is damaged due to folding, the other driving module can drive the sub-pixels to work normally. For example, when the first driving module 110 is damaged due to folding, the second driving module 120 can drive the sub-pixels to work normally; when the second driving module 120 is damaged due to folding, the first driving module 110 can drive the sub-pixels to work normally.

In the display panel provided by the embodiment of the invention, each of the first driving module 110 and the second driving module 120 is designed to be correspondingly connected with the same sub-pixel of the folding region 10, so that the first driving module 110 and the second driving module 120 are used for driving the sub-pixel of the folding region 10 to emit light. Therefore, compared with the single driving design adopted by each sub-pixel of the display panel located in the folding area 10 in the prior art, the dual driving design is adopted by the present embodiment for each sub-pixel of the display panel located in the folding area 10, so that when the driving of one driving module (for example, the second driving module 120) fails, the sub-pixel located in the folding area 10 can normally emit light under the driving of the other driving module 120 (for example, the first driving module 110).

The first driving module 110 and the second driving module 120 are arranged in various ways based on the above-mentioned embodiments, and several of them will be described below, but the present invention is not limited thereto.

In one embodiment, optionally, as shown in fig. 2, all of the first drive modules 110 are disposed within the non-folding zone 20; all the second driving modules 120 are arranged in the folding area 10; the non-folding region 20 is located at opposite sides of the folding region 10 along the first direction X, and the plurality of first driving modules 110 are symmetrically disposed with respect to the folding region 10. The display panel further includes a third driving module 130; the third driving module 130 is disposed in the non-folding area 20; the third driving module 130 is correspondingly connected (e.g. one-to-one connected) to the sub-pixels of the non-folding region 20, and the third driving module 130 is used for driving the sub-pixels of the non-folding region 20 to emit light.

The first driving module 110 correspondingly connected to each sub-pixel of the folding area 10 is disposed in the non-folding area 20, and the second driving module 120 correspondingly connected to each sub-pixel is disposed in the folding area 10, and when the second driving module 120 disposed in the folding area 10 is damaged due to folding, the first driving module 110 disposed in the non-folding area 20 can drive the sub-pixel to work normally. Therefore, the first driving module 110 driving the sub-pixels of the folding area 10 is disposed in the non-folding area 20, so that the first driving module 110 is not affected by folding of the folding area 10, that is, the first driving module 110 is not damaged by folding, and the sub-pixels can be driven to work normally. In addition, since the proportion of the folded region 10 to the display panel is smaller, the number of the sub-pixels in the folded region 10 is smaller than that of the non-folded region, and the third driving module 130 driving the non-folded region 20 does not occupy all the space of the non-folded region 20, the first driving module 110 may be disposed at the idle position of the non-folded region 20, so that the disposition of the first driving module 110 in the non-folded region 20 does not affect the disposition of the third driving module 130 driving the sub-pixels in the non-folded region 20.

In addition, each third driving module 130 is correspondingly connected to one sub-pixel of the non-folding area 20. Illustratively, the third driving module 130 (labeled R in the third driving module 130) of the first row and the first column in fig. 2 is connected to a sub-pixel (e.g., red sub-pixel) of the non-folding area 20, and the third driving module 130 may drive the sub-pixel of the non-folding area 20 to emit red light.

In addition, the first driving module 110 and the second driving module 120 disposed in the non-folding region 20 may be arranged in an array, and distributed in the non-folding region 20 at two opposite sides of the folding region 10 along the first direction X. The first driving module 110 and the second driving module 120 disposed in the non-folding region 20 may be symmetrically disposed with respect to the folding region 10, so that the circuit arrangement of the display panel may be simplified, and the uniformity of the display panel may be improved.

Optionally, the second driving module 120 of each folding area 10 adjacent to the left non-folding area 20 and the first driving module 110 of the non-folding area 20 on the left side of one folding area 10 are connected to the sub-pixels of the same folding area 10, and the second driving module 120 of each folding area 10 adjacent to the right non-folding area 20 and the first driving module 110 of the non-folding area 20 on the right side of one folding area 10 are connected to the sub-pixels of the same folding area 10. Thus, the connection lines between the first and second driving modules 110 and 120 and the sub-pixels of the folding area 10 can be made shorter, thereby reducing the loss of driving current due to transmission.

Based on the above embodiments, fig. 3 is a schematic top view of another display panel according to an embodiment of the present invention. In another embodiment, as shown in fig. 3, the non-folded region 20 optionally includes a first region 21 and a second region 22; the first zone 21 is arranged between the second zone 22 and the folding zone 10; the third driving modules 130 are disposed in the first region 21 and the second region 22, and the first driving modules 110 are interposed between the third driving modules 130 in the first region. The first driving modules 110 and the third driving modules 130 are alternately arranged in the first direction X within the first region.

Specifically, the first driving modules 110 disposed in the first region are arranged in an array; the first driving modules 110 and the second driving modules 120 disposed in the second area are arranged in an array, and the first driving modules 110 are inserted between the third driving modules 130. The first driving modules 110 are inserted between the third driving modules 130, or the first driving modules 110 and the third driving modules 130 are alternately arranged along the first direction X, so that the space between the third driving modules 130 can be utilized, and no additional space is required for the second driving modules 120. Therefore, the arrangement density of the driving circuit is increased, and the first driving module 110 of the non-folding area 20 can be provided for more sub-pixels of the folding area 10 to improve the problem that the display yield is affected by folding the display panel. Compared with the prior art that the technology process is adopted to improve the problem that the display yield of the display panel is affected by folding, the scheme has the advantages of simplicity and convenience in manufacturing and low manufacturing cost.

The display panel further includes a plurality of data lines Vdata arranged in the first direction X and extending in the second direction Y, the first direction X and the second direction Y intersecting. The first driving module 110 and the third driving module 130 are electrically connected to different data lines; a column of first driving modules 110 is electrically connected to the same data line; a column of third driving modules 130 is electrically connected to the same data line, and the column direction is parallel to the second direction Y. The first power signal line Vdd may be electrically connected to the driving modules of the corresponding column. The first power signal line Vdd may be used to transmit the first power voltage ELVDD. In addition, in the embodiment of the present invention, it is preferable that the first driving module and the second driving module independently drive the same sub-pixel to emit light, for the following reasons:

if the sub-pixels of the folding area 10 are driven to emit light by the first driving module 110 and the second driving module 120 at the same time, the sub-pixels of the folding area 10 are driven to emit light by the first driving module 110 alone after the second driving module 120 is damaged due to folding. At this time, the light-emitting brightness of the sub-pixels of the folding area 10 is affected by the damage of the second driving module 120, and in the case that the required light-emitting brightness of the sub-pixels of the folding area 10 is not changed, the light-emitting brightness of the sub-pixels of the folding area 10 driven by the first driving module 110 alone is lower than the light-emitting brightness of the sub-pixels of the folding area 10 driven by the first driving module 110 and the second driving module 120 simultaneously.

If the sub-pixels of the folding area 10 are driven by the first driving module 110 or the second driving module 120 alone to emit light, that is, after the second driving module 120 is damaged due to folding, the sub-pixels of the folding area 10 are driven by the first driving module 110 alone to emit light. At this time, the light emitting luminance of the sub-pixels of the folding area 10 is not affected by the damage of the second driving module 120, and in the case that the required light emitting luminance of the sub-pixels of the folding area 10 is not changed, the luminance of the light emitting of the sub-pixels of the folding area 10 driven by the first driving module 110 is identical to the luminance of the light emitting of the sub-pixels of the folding area 10 driven by the second driving module 120.

Alternatively, the first driving module 110 and the second driving module 120 are electrically connected to different data lines. A column of the second driving modules 120 is electrically connected to the same data line.

Fig. 4 is a schematic top view of another display panel according to an embodiment of the invention. In another embodiment, as shown in fig. 4, the non-folded region 20 optionally includes a third region 23 and a fourth region 24; the third zone 23 is arranged between the fourth zone 24 and the folding zone 10; the third driving module 130 is disposed in the fourth region 24, and the first driving module 110 is disposed in the third region.

Specifically, the first driving modules 110 disposed in the third region are arranged in an array, and the third driving modules 130 disposed in the fourth region are arranged in an array. In this case, since the first driving module 110 disposed in the third region is a driving module for driving the sub-pixels of the folding region 10, the sub-pixels are not disposed in the third region. Since the proportion of the folding area 10 to the display panel is smaller, the number of sub-pixels in the folding area 10 is not large, so that the number of the first driving modules 110 arranged in the third area on the left side and the right side of the folding area 10 is not large, the size of the first driving modules 110 is in the micrometer scale, and further the distribution area of the third area where the first driving modules 110 are arranged is smaller, so that even if the sub-pixels are not arranged in the third area, the display panel cannot be seen by eyes of people, and the display picture in the third area is not distinguished.

Optionally, on the basis of the foregoing embodiment, the display panel further includes a substrate, and the sub-pixels, the first driving module, the second driving module, and the third driving module are located on the substrate; the first driving module and the second driving module are further described, specifically:

the area of the orthographic projection of the first driving module on the substrate is smaller than that of the orthographic projection of the third driving module on the substrate; and/or the area of the orthographic projection of the second driving module on the substrate is smaller than the area of the orthographic projection of the third driving module on the substrate;

the first driving module has a dimension along the first direction that is smaller than a dimension along the first direction of the third driving module; and/or the dimension of the second driving module along the first direction is smaller than the dimension of the third driving module along the first direction; the first direction is parallel to the display surface when the display panel is unfolded.

Wherein the first drive module and the second drive module are in fact compression modules of the third drive module. The first driving modules arranged in the first area can be inserted into gaps between the adjacent third driving modules by reducing the size of the first driving modules, so that additional space placement is not required for the second driving modules. The size of the first driving module is reduced, so that the first driving module arranged in the third area can reduce the occupied space, and the distribution area of the third area is reduced, and the continuity of the display picture of the display panel, which is watched by eyes, is not affected by the third area without the sub-pixels. In addition, since the resolutions of the folded region and the unfolded region are the same, the subpixel density of the folded region and the subpixel density of the unfolded region needs to be maintained to be uniform. The space occupying the folding area can be reduced by shrinking the second driving modules, the setting number of the second driving modules can be increased, and the density of the sub-pixels arranged in the folding area is consistent with that of the sub-pixels arranged in the non-folding area, so that the setting size of the folding area is not influenced by the size of the second driving modules.

Illustratively, the linewidth of the first drive module inner trace is smaller than the linewidth of the third drive module inner trace; and/or the line width of the wiring in the second driving module is smaller than the line width of the wiring in the third driving module; and/or the line distance between the wires in the first driving module is smaller than the line distance between the wires in the third driving module; and/or the line distance between the wires in the second driving module is smaller than the line distance between the wires in the third driving module.

After the sizes of the first driving module and the second driving module are compressed, the line width and the line distance of the first driving module and the second driving module also need to be correspondingly reduced, and therefore, the line width and the line distance of the first driving module and the second driving module are smaller than those of the third driving module. Thereby, the space occupied by the first drive module arrangement in the first region or the third region can be further reduced, and the space occupied by the second drive module arrangement in the folded region can be further reduced.

Optionally, on the basis of the above embodiment, the circuit structures of the first driving module, the second driving module, and the third driving module are the same. Fig. 5 is a schematic circuit diagram of a first driving module (a second driving module/a third driving module) according to an embodiment of the present invention. As shown in fig. 5, the first driving module (second driving module/third driving module) includes a driving transistor T1, a data writing transistor T2, a storage capacitor C, a threshold compensation transistor T3, a first light emission control transistor T4, a second light emission control transistor T5, a first initialization transistor T6, and a second initialization transistor T7, and the sub-pixel includes a light emitting element D, for example, an organic light emitting diode. The driving transistor T1 is used for generating a driving current, the data writing transistor T2 is used for writing a data voltage data into the driving transistor T1 under the control of the second scanning signal S2, the threshold compensating transistor T3 is used for compensating the threshold voltage of the driving transistor T1, the first initializing transistor T6 is used for writing a first initializing signal Vref1 into a control end of the driving transistor T1 under the control of the first scanning signal S1 so as to initialize the driving transistor T1, the second initializing transistor T7 is used for writing a second initializing signal Vref2 into the light emitting element D under the control of the third scanning signal S3, and the first light emitting controlling transistor T4 and the second light emitting controlling transistor T5 are used for providing a current path for the light emitting element D. The driving module and the corresponding sub-pixel are connected in series between the first power signal line and the second power signal line. The second power signal line may be used to transmit the second power voltage VSS.

Specifically, the pixel driving circuit in this embodiment includes seven transistors and a capacitor, which is also commonly referred to as a "7T1C" pixel driving circuit in the art, and the specific operation process thereof is well known to those skilled in the art and will not be described herein. It should be noted that: the above is merely an exemplary circuit configuration of the first driving module (second driving module/third driving module), and this is not limited.

Based on the above embodiments, fig. 6 is a schematic circuit structure diagram of a first driving module and a second driving module, which are both connected to the sub-pixels of the folding region according to the embodiment of the present invention. As shown in fig. 6, the second electrode of the second light emission control transistor T5 and the second electrode of the second initialization transistor T7 of the first driving module 110 are both connected to the first electrode (e.g., anode electrode) of the light emitting element D included in the sub-pixel. The second pole of the second light emission control transistor T5 and the second pole of the second initialization transistor T7 of the second driving module 120 are also connected to the first pole (e.g., anode) of the light emitting element D included in the sub-pixel connected to the first driving module 110.

Optionally, the first driving module and the second driving module electrically connected to the same sub-pixel of the folding region are used to supply driving current to the sub-pixel of the folding region simultaneously or in a time-sharing manner.

Wherein the first driving module 110 and the second driving module 120 may simultaneously supply driving currents to the sub-pixels of the folding region 10. If the second driving module 120 is damaged due to folding, the sub-pixels of the folding region 10 are driven by the first driving module 110 alone to emit light. At this time, the light-emitting brightness of the sub-pixels of the folding area 10 is affected by the damage of the second driving module 120, and in the case that the required light-emitting brightness of the sub-pixels of the folding area 10 is not changed, the light-emitting brightness of the sub-pixels of the folding area 10 driven by the first driving module 110 alone is lower than the light-emitting brightness of the sub-pixels of the folding area 10 driven by the first driving module 110 and the second driving module 120 simultaneously. Similarly, if the first driving module 110 is damaged for some reason, the sub-pixels of the folding region 10 are driven by the second driving module 120 alone to emit light. At this time, the light-emitting brightness of the sub-pixels of the folding area 10 is affected by the damage of the first driving module 110, and in the case where the required light-emitting brightness of the sub-pixels of the folding area 10 is not changed, the light-emitting brightness of the sub-pixels of the folding area 10 driven by the second driving module 120 alone is lower than the light-emitting brightness of the sub-pixels of the folding area 10 driven by both the first driving module 110 and the second driving module 120.

The first driving module 110 and the second driving module 120 time-share to provide driving current to the sub-pixels of the folding region 10, that is, the sub-pixels of the folding region 10 are independently driven to emit light by the first driving module 110 or the second driving module 120. If the second driving module 120 is damaged due to folding, the sub-pixels of the folding region 10 are driven by the first driving module 110 alone to emit light. At this time, the light emitting luminance of the sub-pixels of the folding area 10 is not affected by the damage of the second driving module 120, and in the case that the required light emitting luminance of the sub-pixels of the folding area 10 is not changed, the luminance of the light emitting of the sub-pixels of the folding area 10 driven by the first driving module 110 is identical to the luminance of the light emitting of the sub-pixels of the folding area 10 driven by the second driving module 120 before the damage of the second driving module 120. If the first driving module 110 is damaged for some reason, the sub-pixels of the folding region 10 are driven to emit light by the second driving module 120 alone. At this time, the light emitting luminance of the sub-pixels of the folding area 10 is not affected by the damage of the first driving module 110, and in the case that the required light emitting luminance of the sub-pixels of the folding area 10 is not changed, the luminance of the light emitting of the sub-pixels of the folding area 10 driven by the second driving module 120 is identical to the luminance of the light emitting of the sub-pixels of the folding area 10 driven by the first driving module 110 before the damage of the first driving module 110. Optionally, one of the first and second driving modules electrically connected to the same sub-pixel of the folding region is used to provide a driving current to the sub-pixel at least when the other is damaged.

For example, if the second driving module 120 is damaged due to folding, the sub-pixels of the folding area 10 are driven by the first driving module 110 alone to emit light. Similarly, if the first driving module 110 is damaged for some reason, the sub-pixels of the folding region 10 are driven by the second driving module 120 alone to emit light.

Optionally, the first driving module and the second driving module electrically connected with the same sub-pixel of the folding region are used for simultaneously providing driving current for the sub-pixel of the folding region in a first period; one of the first and second driving modules electrically connected to the same sub-pixel of the folding region is used to individually supply the driving current to the sub-pixel of the folding region during the second period. The driving currents provided to the sub-pixels of the folding region are the same under the same gray scale brightness in the first period and the second period.

The embodiment of the invention also provides a display device which comprises the display panel provided by any embodiment of the invention and has corresponding beneficial effects.

Alternatively, fig. 7 is a schematic structural diagram of another display device according to the embodiment of the present invention. The display panel further includes a third driving module 130; the third driving module 130 is disposed in the non-folding area 20; the third driving module 130 is correspondingly connected to the sub-pixels of the non-folding area 20, and the third driving module 130 is used for driving the sub-pixels of the non-folding area 20 to emit light.

Optionally, the display panel further includes a first driving chip 30 and a second driving chip 40, the first driving module 110 and the second driving module 120 are connected to the first driving chip 30, and the third driving module 130 is connected to the second driving chip 40; the first driving chip 30 is used for controlling the first driving module 110 and the second driving module 120 to provide driving current to the sub-pixels of the folding area 10, and the second driving chip 40 is used for controlling the third driving module 130 to provide driving current to the sub-pixels of the non-folding area 20.

The first driving chip 30 may control the first driving module 110 and the second driving module 120 to provide driving currents for the sub-pixels of the folding area 10, and control the manner in which the first driving module 110 and the second driving module 120 provide driving currents for the sub-pixels of the folding area 10 (the first driving module 110 and the second driving module 120 provide driving currents for the sub-pixels of the folding area 10 at the same time or the first driving module 110 and the second driving module 120 provide driving currents for the sub-pixels of the folding area 10 at different time intervals), so as to control the sub-pixels of the folding area 10 to emit light. The second driving chip 40 may control the third driving module 130 to supply a driving current to the sub-pixels of the non-folding region 20, thereby controlling the sub-pixels of the non-folding region 20 to emit light.

The embodiment of the invention also provides a driving method of the display panel, which can be used for driving the display panel provided by the embodiment of the invention, and the driving method of the display panel comprises the following steps:

the first driving module and the second driving module supply driving current to the sub-pixels of the folding region simultaneously or in a time-sharing manner.

According to the driving method of the display panel, the driving current is provided for the sub-pixels of the folding region through the first driving module and the second driving module at the same time or in a time-sharing mode. Therefore, compared with the single-driving design adopted by each sub-pixel of the display panel in the folding area in the prior art, the double-driving design is adopted by the scheme for each sub-pixel of the display panel in the folding area, so that when the driving of one driving module (such as a first driving module) fails, the sub-pixel in the folding area can normally emit light under the driving of the other driving module (such as a second driving module).

Optionally, one of the first and second driving modules electrically connected to the same sub-pixel of the folding region provides a driving current to the sub-pixel at least when the other is damaged.

Optionally, the first driving module and the second driving module electrically connected with the same sub-pixel of the folding region are used for simultaneously providing driving current for the sub-pixel of the folding region in a first period; one of the first and second driving modules electrically connected to the same sub-pixel of the folding region is used to individually supply the driving current to the sub-pixel of the folding region during the second period. The driving currents provided to the sub-pixels of the folding region are the same under the same gray scale brightness in the first period and the second period.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.

The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. A display panel comprising a folded region and an unfolded region;

the display panel further comprises a plurality of sub-pixels, a plurality of first driving modules and a plurality of second driving modules;

at least one first driving module and at least one second driving module are correspondingly connected with the same sub-pixel of the folding area, and the first driving module and the second driving module are used for driving the sub-pixel of the folding area to emit light.

2. The display panel of claim 1, further comprising a third drive module; the third driving module is arranged in the non-folding area;

the third driving module is correspondingly connected with the sub-pixels of the non-folding area, and is used for driving the sub-pixels of the non-folding area to emit light.

3. The display panel according to claim 1 or 2, wherein all of the first driving modules are disposed within the non-folding region; all the second driving modules are arranged in the folding area;

preferably, the non-folding region is located at two opposite sides of the folding region along the first direction, and the plurality of first driving modules are symmetrically arranged about the folding region.

4. The display panel of claim 3, wherein the non-folded region comprises a first region and a second region; the first region is arranged between the second region and the folding region;

the third driving module is arranged in the first area and the second area, and the first driving module is inserted between the third driving modules in the first area;

preferably, the first driving modules and the third driving modules are alternately arranged in a first direction within the first region;

preferably, the display panel further includes a plurality of data lines arranged in a first direction and extending in a second direction, the first direction intersecting the second direction;

preferably, the first driving module and the third driving module are electrically connected to different data lines;

preferably, a column of the first driving modules is electrically connected to the same data line; a row of the third driving modules are electrically connected with the same data line, and the row direction is parallel to the second direction;

preferably, the first driving module and the second driving module are electrically connected to different data lines;

alternatively, the non-folded region includes a third region and a fourth region; the third region is arranged between the fourth region and the folding region;

the third driving module is arranged in the fourth area, and the first driving module is arranged in the third area.

5. The display panel of claim 2, further comprising a substrate, the sub-pixels, the first driving module, the second driving module, and the third driving module being located on the substrate;

the area of the orthographic projection of the first driving module on the substrate is smaller than that of the orthographic projection of the third driving module on the substrate;

and/or the area of the orthographic projection of the second driving module on the substrate is smaller than the area of the orthographic projection of the third driving module on the substrate;

preferably, the dimension of the first driving module along the first direction is smaller than the dimension of the third driving module along the first direction; and/or the dimension of the second driving module along the first direction is smaller than the dimension of the third driving module along the first direction; the first direction is parallel to the display surface when the display panel is unfolded.

6. The display panel of claim 5, wherein a line width of the first driving module internal wiring is smaller than a line width of the third driving module internal wiring;

and/or the line width of the wiring in the second driving module is smaller than the line width of the wiring in the third driving module;

and/or the line distance between the wires in the first driving module is smaller than the line distance between the wires in the third driving module;

and/or the line distance between the wires in the second driving module is smaller than the line distance between the wires in the third driving module.

7. The display panel of claim 1, wherein the first and second driving modules electrically connected to the same subpixel of the folding region are configured to provide driving current to the subpixel of the folding region simultaneously or in a time sharing manner;

preferably, one of the first and second driving modules electrically connected to the same sub-pixel of the folding region is used to provide a driving current to the sub-pixel at least when the other is damaged;

preferably, the first driving module and the second driving module electrically connected to the same sub-pixel of the folding region are used to simultaneously supply driving current to the sub-pixel of the folding region in a first period;

one of the first and second driving modules electrically connected to the same subpixel of the folding region is for separately supplying a driving current to the subpixel of the folding region for a second period of time;

and under the same gray scale brightness in the first period and the second period, the driving current provided for the sub-pixels of the folding area is the same.

8. A display device comprising the display panel of claims 1-7.

9. The display device of claim 8, wherein the display panel further comprises a third driving module; the third driving module is arranged in the non-folding area;

the third driving module is correspondingly connected with the sub-pixels of the non-folding area and is used for driving the sub-pixels of the non-folding area to emit light;

the display device further comprises a first driving chip and a second driving chip, wherein the first driving module and the second driving module are connected with the first driving chip, and the third driving module is connected with the second driving chip;

the first driving chip is used for controlling the first driving module and the second driving module to provide driving current for the sub-pixels of the folding area, and the second driving chip is used for controlling the third driving module to provide driving current for the sub-pixels of the non-folding area.

10. A driving method of a display panel, wherein the display panel includes a folding area and a non-folding area; the display panel further comprises a plurality of sub-pixels, a plurality of first driving modules and a plurality of second driving modules;

at least one first driving module and at least one second driving module are correspondingly connected with the same sub-pixel of the folding area, and the first driving module and the second driving module are used for driving the sub-pixel of the folding area to emit light;

the driving method of the display panel comprises the following steps:

the first driving module and the second driving module supply driving current to the sub-pixels of the folding region simultaneously or in a time-sharing manner.