CN113284453A - Display panel, driving method thereof and display device - Google Patents
Display panel, driving method thereof and display device Download PDFInfo
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- CN113284453A CN113284453A CN202110604845.1A CN202110604845A CN113284453A CN 113284453 A CN113284453 A CN 113284453A CN 202110604845 A CN202110604845 A CN 202110604845A CN 113284453 A CN113284453 A CN 113284453A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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Abstract
The embodiment of the invention discloses a display panel, a driving method thereof and a display device. The display panel includes: at least two display areas; the scanning driving circuits are respectively corresponding to the at least two display areas and used for providing driving signals for the corresponding display areas; wherein at least two of the scan driving circuits are driven individually. Compared with the prior art, the embodiment of the invention reduces the power consumption.
Description
Technical Field
The present invention relates to display technologies, and in particular, to a display panel, a driving method thereof, and a display device.
Background
With the development of display technology, the performance requirements of display devices, especially the display performance of display panels, are always one of the goals that consumers and panel manufacturers continuously pursue. In order to enrich the display effect of the display panel, a display panel having a folding function or a display panel with a divisional display function has been developed. However, the conventional display panel has a problem of high power consumption due to the arrangement of the driving circuit of the display panel.
Disclosure of Invention
The embodiment of the invention provides a display panel, a driving method thereof and a display device, which are used for reducing power consumption.
In order to achieve the technical purpose, the embodiment of the invention provides the following technical scheme:
a display panel, comprising:
at least two display areas;
the scanning driving circuits are respectively corresponding to the at least two display areas and used for providing driving signals for the corresponding display areas; wherein at least two of the scan driving circuits are driven individually.
According to the technical scheme, the partition driving of the display panel is realized. Compared with the existing display panel, the embodiment of the invention can control the scanning driving circuit corresponding to the display area in normal display to work, and control the scanning driving circuit corresponding to the display area in a black state to not work, namely control at least part of the scanning driving circuits not to generate power consumption. Therefore, the embodiment of the invention is beneficial to reducing the power consumption of the scanning driving circuit and reducing the power consumption of the display panel.
Optionally, the display panel further comprises:
the scanning driving circuit comprises at least two scanning driving circuits, at least two control signal lines and at least two control signal lines, wherein the at least two control signal lines are respectively corresponding to the at least two scanning driving circuits, and the control signal lines are used for providing control signals for the corresponding scanning driving circuits.
Preferably, the scan driving circuit includes cascade-connected shift registers; the control signal lines comprise starting signal lines, at least two of the starting signal lines are respectively connected with at least two of the first-stage shift registers of the scanning driving circuit, so that the scanning driving circuit can be respectively connected with different starting signal lines and only provides starting signals for the scanning driving circuit needing to work, and therefore the partition driving of the scanning driving circuit is achieved.
Alternatively, the control signal line comprises a clock signal line; the at least two clock signal lines are respectively connected with the shift registers of the at least two scanning driving circuits, so that the scanning driving circuits can be respectively connected with different clock signal lines, and only the scanning driving circuits needing to work are provided with clock signals, thereby realizing the partition driving of the scanning driving circuits.
Or, the control signal line comprises a level signal line; the at least two level signal lines are respectively connected with the shift registers of the at least two scanning driving circuits, so that the scanning driving circuits can be respectively connected with different level signal lines, and only the scanning driving circuits needing to work are provided with normal level signals, thereby realizing the partition driving of the scanning driving circuits.
Optionally, at least two of the display regions are arranged in a line along the first direction; along the first direction, part of the scanning driving circuit is positioned at one side of the whole display area; in addition, part of the scanning driving circuit is positioned at the other side of the whole display area, and the arrangement of the embodiment of the invention is favorable for reducing the frame of the scanning driving circuit occupying one side of the display panel, thereby being favorable for reducing the frame width of the display panel.
Preferably, the number of the display regions is two, and the number of the scan driving circuits is two; along the first direction, two display areas are located between two scanning driving circuits, and the number of the display areas and the number of the scanning driving circuits can be set according to requirements.
Preferably, the display panel further includes:
at least two data signal lines respectively corresponding to the at least two display regions, the data signal lines being used for providing data signals to the corresponding display regions; wherein the data signal line extends in a second direction, the second direction crossing the first direction. The arrangement can ensure that when at least one display area is in a black state, a data signal does not need to be provided for the display area, and the corresponding data driving circuit does not work and does not generate power consumption, so that the whole power consumption of the display panel is further reduced.
Optionally, at least two of the display regions are arranged in a column along the second direction; at least two scanning driving circuits are arranged in a column along the second direction;
preferably, the display panel further includes a data signal line, the data signal line extends along the second direction, and the data signal line is configured to provide data signals to at least two of the display regions in a time-sharing manner, so that the data signal line can operate normally in the display region in the first row, and when the display region in the second row does not display, the data signal line has no data signal or no level change in the latter half of a frame, and the data driving circuit may not operate in this phase, and does not generate power consumption, thereby facilitating further reducing the overall power consumption of the display panel.
Optionally, at least two of the display regions are arranged in an array; along a first direction, part of the scanning driving circuits are positioned on one side of the whole display area, and the other part of the scanning driving circuits are positioned on the other side of the whole display area; at least part of the scanning driving circuits are arranged in a column along the second direction; the second direction is crossed with the first direction, so that the display area of the display area is smaller, the display area in a black state is more refined, and more display areas in the black state can be favorably divided, thereby being favorable for further reducing the overall power consumption of the display panel.
Preferably, the display panel further includes a data signal line, the data signal line extends along the second direction, and the data signal line is configured to provide data signals to at least two of the display regions in one column in a time-sharing manner, so that the data signal line can operate normally in the display region in the first row, and when the display region in the second row does not display, the data signal line does not have a data signal or a level change in the second half of one frame, and the data driving circuit may not operate in this phase, and does not generate power consumption, thereby being beneficial to reducing the overall power consumption of the display panel.
Optionally, the display panel further comprises a folding shaft, the folding shaft is used for achieving folding display of the display panel, at least two display areas are respectively located on two sides of the folding shaft, the display areas located on two sides of the folding shaft can be controlled respectively, and reduction of power consumption of the display panel is facilitated.
Optionally, the display panel further comprises:
the display panel comprises at least two display areas, at least two power signal lines and a control circuit, wherein the at least two power signal lines are respectively corresponding to the at least two display areas, the power signal lines are used for providing power signals for the corresponding display areas, and the voltage values of the power signal lines are matched with the brightness of the corresponding display areas, so that the voltage values of the corresponding power signal lines can be set according to the brightness requirements of the at least two display areas, the power consumption of the display panel is further reduced, and the brightness uniformity of the display panel is also improved.
Preferably, the display region comprises pixel units arranged in an array, the pixel units comprise pixel circuits and light emitting devices, and the pixel circuits provide driving currents for the light emitting devices to drive the light emitting devices to emit light; the embodiment of the present invention does not limit the specific type of the power signal line, and the power signal line may be controlled in a divisional manner as long as the power signal line provides a power signal for the display panel, so that the voltage value of each power signal line matches the luminance of the corresponding display region.
Preferably, the light emitting device includes a first pole and a second pole, and the first pole of the light emitting device is connected to the pixel circuit; the power supply signal line is connected to the pixel circuit or the power supply signal line is connected to the second pole of the light emitting device, that is, the embodiment of the invention can perform the partition control of the power supply signal line connected to the pixel circuit.
Correspondingly, the invention further provides a driving method of the display panel, the driving method is used for driving the display panel according to any embodiment of the invention, and the driving method has corresponding beneficial effects. The driving method comprises the following steps:
determining a driving signal of the corresponding scanning driving circuit according to the display states of at least two display areas;
at least two of the scan driving circuits provide the driving signals to the corresponding display regions.
Optionally, at least two of the display regions are arranged in a line along the first direction; the display panel also comprises at least two data signal lines, and the at least two data signal lines respectively correspond to the at least two display areas;
the driving method further includes:
determining the data signals of the corresponding data signal lines according to the display state requirements of at least two display areas;
at least two data signal lines provide the data signals to the corresponding display regions;
or at least two display areas are arranged in a column along the second direction; at least two scanning driving circuits are arranged in a column along the second direction; the display panel further comprises a data signal line extending along the second direction; the driving method further includes:
determining data signals of the data signal lines according to the display state requirements of at least two display areas;
the data signal lines provide data signals to at least two of the display regions in a time-sharing manner.
Correspondingly, the invention further provides a display device which comprises the display panel according to any embodiment of the invention and has corresponding beneficial effects.
The embodiment of the invention realizes the partition driving of the display panel by arranging at least two scanning driving circuits which respectively correspond to at least two display areas and are driven independently. Compared with the existing display panel, the embodiment of the invention can control the scanning driving circuit corresponding to the display area in normal display to work, and control the scanning driving circuit corresponding to the display area in a black state to not work, namely control at least part of the scanning driving circuits not to generate power consumption. Therefore, the embodiment of the invention is beneficial to reducing the power consumption of the scanning driving circuit and reducing the power consumption of the display panel.
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 another display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another display panel 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 schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a pixel circuit according to an embodiment of the invention;
FIG. 12 is a schematic diagram of another pixel circuit according to an embodiment of the present invention;
fig. 13 is a schematic cross-sectional view illustrating a display panel according to an embodiment of the invention;
fig. 14 is a flowchart of a driving method of a display panel according to an embodiment of the invention;
fig. 15 is a driving timing diagram according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As described in the background art, the conventional arrangement of the driving circuit of the display panel has a problem of increased power consumption. The inventors have found, through long-term research, that the reasons for the above problems are as follows:
for a display panel with a fold-out function, a display panel with a divisional display, or another display panel, the display states of different display regions in the display panel are different, and for example, when the display panel with a fold-out function is folded and displayed, a part of the display region is in a completely black state. In the prior art, the display area is provided with a driving signal by the same scanning driving circuit, and the display function of the display area is realized through the difference of data signals. However, for the area in the full black state, the scan driving circuit also operates and supplies the driving signal, which generates unnecessary power consumption, so that the power consumption of the conventional display panel is high.
In view of the foregoing problems, embodiments of the present invention provide a display panel. Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. Referring to fig. 1, the display panel includes at least two display regions 100 and at least two scan driving circuits 200, and it is exemplarily shown in fig. 1 that the display panel includes two display regions 100 and two scan driving circuits 200. The at least two scan driving circuits 200 correspond to the at least two display regions 100, respectively, the scan driving circuits 200 are used for providing driving signals to the corresponding display regions 100, and the at least two scan driving circuits 200 are driven separately.
The display panel including at least two display areas 100 is divided into two. In particular, different driving signals may be provided to different display regions 100 while keeping the pixel arrangement of the display panel unchanged. Illustratively, the divided two display regions 100 are arranged one above another, and accordingly, the upper scan driving circuit 200 supplies a driving signal to the upper display region 100; the underlying scan driving circuit 200 supplies a driving signal to the underlying display area 100. The at least two scan driving circuits 200 may correspond to the at least two display regions 100, where the at least two scan driving circuits 200 correspond to the at least two display regions 100 one to one, that is, one scan driving circuit 200 provides a driving signal to one display region 100; alternatively, one scan driving circuit 200 corresponds to at least two display regions 100, i.e., one scan driving circuit 200 supplies driving signals to at least two display regions 100. The at least two scan driving circuits 200 are driven independently, that is, the operating states of the at least two scan driving circuits 200 do not affect each other, and the operation of one scan driving circuit 200 does not affect whether the other scan driving circuits 200 operate. Thus, at least two scan driving circuits 200 may operate simultaneously, or when one scan driving circuit 200 operates, the other scan driving circuit 200 does not operate, and when the scan driving circuit 200 does not operate, the scan driving circuit 200 does not generate power consumption.
Illustratively, the driving method of the display panel is to determine the driving signal of the corresponding scan driving circuit 200 according to the display states of at least two display regions 100; at least two scan driving circuits 200 supply driving signals to the corresponding display regions 100. The display states of at least two display regions 100 in the display panel are different, and the driving signals of the corresponding scan driving circuits 200 are also different. For example, when one of the display regions 100 displays a picture, a driving signal needs to be provided thereto, and the corresponding scan driving circuit 200 operates normally to provide a driving signal to the corresponding display region 100; the other display regions 100 are in the black state, and thus, a driving signal does not need to be provided thereto, and the corresponding scan driving circuit 200 may not operate, thereby not generating power consumption, and being beneficial to reducing the overall power consumption of the display panel.
In summary, in the embodiment of the invention, the at least two scan driving circuits 200 are respectively corresponding to the at least two display areas 100, and the at least two scan driving circuits 200 are driven independently, so that the divisional driving of the display panel is realized. Compared with the existing display panel, the embodiment of the invention can control the scanning driving circuit 200 corresponding to the display area 100 in normal display to work, and control the scanning driving circuit 200 corresponding to the display area 100 in the black state to not work, i.e. control at least part of the scanning driving circuit 200 not to generate power consumption. Therefore, the embodiment of the invention is beneficial to reducing the power consumption of the scanning driving circuit 200 and reducing the power consumption of the display panel.
In the above embodiments, there are various ways for the scan driving circuit to realize the individual driving, and some of them will be described below, but the present invention is not limited thereto.
With continued reference to fig. 1, in an embodiment of the present invention, optionally, the display panel includes at least two control signal lines 110 respectively corresponding to the at least two scan driving circuits 200, and the control signal lines 110 are used for providing control signals to the corresponding scan driving circuits 200. The at least two control signal lines 110 may correspond to the at least two scan driving circuits 200, where the at least two control signal lines 110 correspond to the at least two scan driving circuits 200 one to one, that is, one control signal line 110 provides a control signal to one scan driving circuit 200; alternatively, one control signal line 110 corresponds to at least two scan driving circuits 200, i.e., one control signal line 110 supplies a control signal to at least two scan driving circuits 200. The scan driving circuit 200 is controlled by the control signal transmitted on the control signal line 110, and when the control signal provided by the control signal line 110 is a normal signal, the scan driving circuit 200 can work normally; when there is no control signal on the control signal line 110, the corresponding scan driving circuit 200 does not operate. In the embodiment of the present invention, different scan driving circuits 200 are set to be controlled by different control signal lines 110, so as to control the working state of the scan driving circuit 200, and the control method is simple and easy to implement.
Fig. 2 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 2, in the above embodiment, optionally, the scan driving circuit 200 includes the shift registers 210 connected in cascade. The control signal line 110 includes at least one of signal lines such as a start signal line 111, a clock signal line 112, and a level signal line 113, that is, at least one of signal lines such as the start signal line 111, the clock signal line 112, and the level signal line 113 as a control signal line for controlling the scan driving circuit 200.
The start signal line 111 is connected to the first stage shift register 210, and under the control of the start signal, the first stage shift register 210 outputs a first stage scan signal, which is used as the start signal of the second stage shift register 210, and so on, to generate a scan signal output in cascade. In the embodiment of the present invention, the scan driving circuit 200 may be respectively connected to different start signal lines 111, and only the start signal is provided to the scan driving circuit 200 that needs to operate, so as to implement the divisional driving of the scan driving circuit 200.
The clock signal lines 112 are connected to the shift registers 210 at different stages, and the arrangement of the clock signal lines 112 is different according to the circuit type of the shift registers 210, and the number of the clock signal lines 112 may be one, two, or three. The shift registers 210 shift output scan signals under the control of the clock signal line 112. In the embodiment of the present invention, the scan driving circuit 200 may be respectively connected to different clock signal lines 112, and only provide a clock signal to the scan driving circuit 200 that needs to operate, so as to implement the partition driving of the scan driving circuit 200.
The level signal lines 113 are connected to the shift registers 210 of respective stages, the level signal lines 113 include high level signal lines and low level signal lines, and the level signal lines 113 are used to supply high and low levels required for control to the shift registers 210. In the embodiment of the present invention, the scan driving circuit 200 may be respectively connected to different level signal lines 113, and only provide a normal level signal to the scan driving circuit 200 that needs to work; the scanning drive circuit 200 which does not need to operate supplies no level signal, or the high level signal line and the low level signal line supply a high level signal or a low level signal at the same time to make the level signal line 113 inactive; thereby realizing the divisional driving of the scan driving circuit 200.
On the basis of the above embodiments, there are optionally a plurality of arrangements of the display area 100, and several of them will be described below. In addition, the embodiment of the invention also sets the data signal lines to be independently driven corresponding to different display areas 100, so as to further reduce the power consumption of the display panel. However, the arrangement of the corresponding data signal lines is different for different arrangement of the display area 100, and the following description will be made specifically.
Fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 3, in an embodiment of the present invention, optionally, at least two display regions 100 are arranged in a line along a first direction X; along the first direction X, at least two scan driving circuits 200 are alternately arranged with at least two display regions 100, i.e. a part of the scan driving circuits 200 is located at one side of the whole display regions 100; the other part of the scan driving circuit 200 is located at the other side of the entire display area 100. Fig. 3 exemplarily shows that the number of the display regions 100 is two and the number of the scan driving circuits 200 is two; along the first direction X, two display regions 100 are located between two scan driving circuits 200. Illustratively, the two scan driving circuits 200 respectively provide driving signals to the two corresponding display regions 100, the two scan driving circuits 200 are driven individually, that is, the driving signals provided by each scan driving circuit 200 may be different, the driving signals provided by the scan driving circuits 200 are determined according to the display state of the corresponding display region 100, if the display region 100 in the display panel is in a black state, it is not necessary to provide the driving signals thereto, and the corresponding scan driving circuits 200 may not operate, so that power consumption is not generated, which is beneficial to reducing the overall power consumption of the display panel.
Fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 4, optionally, the display panel further includes a plurality of data signal lines 300 respectively corresponding to the at least two display regions 100. The data signal lines 300 extend in a second direction Y, which intersects the first direction X, and preferably, the first direction is perpendicular to the second direction. Illustratively, the display panel includes two display areas 100, wherein a part of the data signal lines 300 supplies data signals to the display area 100 positioned on the left, and another part of the data signal lines 300 supplies data signals to the display area 100 positioned on the right. One of the display regions 100 displays a picture, the corresponding data signal line 300 provides a data signal required for display, and the other display region 100 is in a black state, so that the data signal does not need to be provided thereto, and the corresponding data driving circuit does not work and does not generate power consumption, thereby being beneficial to further reducing the overall power consumption of the display panel.
Fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 5, in an embodiment of the present invention, optionally, at least two display regions 100 are arranged in a column along the second direction Y; and along the second direction Y, at least two scan driving circuits 200 are arranged in a column. For example, two display regions 100 may be arranged in a column along the second direction Y, or a plurality of display regions 100 may be arranged in a column along the second direction Y. The number of the at least two display areas 100 may be specifically set according to actual situations, and is not limited herein.
Alternatively, the display area 100 may be dual-edge driven, the scan driving circuit 200 may be disposed at two sides of the display area 100, and the display area 100 may be provided with the driving signal by the scan driving circuit 200 at the two sides. Illustratively, the scan driving circuit 200 positioned at the left side of the display panel sequentially transmits driving signals to the odd-numbered scan lines. The scan driving circuit 200 positioned at the right side of the display panel sequentially transmits driving signals to the even number of scan lines. The arrangement of the embodiment of the invention is beneficial to reducing the frame of one side of the display panel occupied by the scanning driving circuit 200, thereby being beneficial to reducing the frame width of the display panel.
With reference to fig. 5, optionally, the display panel further includes a plurality of data signal lines 300, the plurality of data signal lines 300 extend along the second direction Y, and the plurality of data signal lines 300 are used for providing data signals to at least two display regions 100 in a time-sharing manner. Illustratively, the display area 100 located at the upper side operates normally, the display area 100 located at the lower side does not display, and the plurality of data signal lines 300 supply normal data signals to the display area 100 of the display screen located at the upper side in the first half of one frame; the underlying display area 100 is in a black state, and thus, there is no need to provide data signals or constant black data signals thereto, i.e., there is no data signal or level change in the second half of a frame for the plurality of data signal lines 300, and the data driving circuit may not operate in this phase, and no power consumption is generated, thereby further reducing the overall power consumption of the display panel.
Fig. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 6, in an embodiment of the present invention, optionally, at least two display regions 100 are arranged in an array; at least part of the scanning driving circuits 200 and at least part of the display regions 100 are alternately arranged along the first direction X, that is, part of the scanning driving circuits 200 are located at one side of the whole display regions 100; the other part of the scan driving circuit 200 is located at the other side of the whole display area 100; and at least a portion of the scan driving circuits 200 are arranged in a column along the second direction Y; wherein the second direction Y intersects the first direction X. Fig. 6 illustrates four display regions 100 arranged in two rows and two columns, the scan driving circuit 200 provides driving signals to the corresponding display regions 100, the display area of the display regions 100 is smaller, and the display regions 100 in the black state are more detailed, which is beneficial to dividing more display regions 100 in the black state, thereby being beneficial to further reducing the overall power consumption of the display panel. The number of rows and columns and the area size of the at least two display regions 100 arranged in an array may be specifically set according to the actual situation, and are not limited herein.
Fig. 7 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 7, optionally, the display panel further includes a plurality of data signal lines 300, the plurality of data signal lines 300 extend along the second direction Y, and the plurality of data signal lines 300 are used for providing data signals to at least two display regions 100 in a column in a time-sharing manner. Illustratively, the display regions are arranged in a 2 × 2 manner, the display regions 100 in the first row operate normally, the display regions 100 in the second row do not display, the plurality of data signal lines 300 corresponding to the first column provide normal data signals to the display regions 100 in the first column of the display screen in the first row in the first half of a frame, and the display regions 100 in the first column of the second row are in a black state, so that it is not necessary to provide data signals or provide constant black data signals to the display regions, that is, the plurality of data signal lines 300 corresponding to the first column do not have data signals or have level changes in the second half of the frame, and the data driving circuit may not operate in this phase, and does not generate power consumption, thereby being beneficial to reducing the overall power consumption of the display panel. The plurality of data signal lines 300 corresponding to the second column provide normal data signals to the display area 100 of the display screen located in the first row and the second column in the first half stage of a frame, and the display area 100 located in the second row and the second column is in a black state, so that data signals do not need to be provided thereto or a constant black state data signal does not need to be provided thereto, that is, the plurality of data signal lines 300 corresponding to the second column do not have data signals or have no level change in the second half stage of the frame, and the data driving circuit may not operate in this stage, and does not generate power consumption, thereby being beneficial to reducing the overall power consumption of the display panel.
Fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 8, in an embodiment of the present invention, the display panel optionally further includes a folding axis 400, the folding axis 400 is used for implementing a folding display of the display panel, and the at least two display areas 100 are respectively located at two sides of the folding axis 400. The display panel is a bendable display panel, and the foldable display is realized through the bending shaft 400. Illustratively, the display panel includes two display areas 100, and the two display areas 100 are respectively located at both sides of the bending axis 400. For example, if the display area 100 located on one side of the bending axis 400 displays a screen, the display area 100 located on the other side of the bending axis 400 does not display a screen. The scan driving circuit 200 is arranged in a partition manner, the driving signal of the scan driving circuit 200 corresponding to the display area 100 on one side of the bending shaft 400 can be set as the driving signal required by the display picture, and the scan driving circuit 200 corresponding to the display area 100 on the other side of the bending shaft 400 is set to be free of the driving signal, so that the display areas 100 on the two sides of the bending shaft 400 can respectively display and not display, and the power consumption of the display panel can be reduced.
On the basis of the foregoing embodiments, embodiments of the present invention further provide a scheme for setting power signal lines in a partition manner, so as to further reduce power consumption of a display panel, which is described in detail below.
Fig. 9 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Referring to fig. 9, in an embodiment of the present invention, optionally, the display panel further includes at least two power signal lines 500, the at least two power signal lines 500 respectively correspond to the at least two display areas 100, the power signal lines 500 are used for providing power signals to the corresponding display areas 100, and a voltage value of the power signal lines 500 is matched with a luminance of the corresponding display areas 100. The voltage value of the power signal line 500 is matched with the luminance of the corresponding display area 100, that is, the voltage value of the power signal line 500 is determined by the luminance of the corresponding display area 100.
Illustratively, the driving method of the display panel is to determine the voltage value of the corresponding power signal line 500 according to the luminance of at least two display areas 100; at least two power signal lines 500 receive the voltage values to drive the display area to display the image. The brightness of at least two display areas 100 in the display panel is different, and the voltage values received by at least two power signal lines 500 are also different, so that the partition control of the power signals of the display panel is realized. For example, if the average preset luminance of one of the display regions 100 is higher (non-black state), the voltage value of the corresponding power signal line 500 is larger; when the other display area 100 is in the black state, the voltage value of the corresponding power signal line 500 is smaller, for example, the power signal line 500 is the first power signal line VDD, and the voltage of the first power signal line VDD and the voltage of the second power signal line VSS can be set to be equal, so that the other display area 100 does not operate. Thus, the power supply voltage can be provided according to the requirement, thereby being beneficial to reducing the overall power consumption of the display panel. For another example, if one of the display regions 100 is farther from the driver chip and the IR-Drop on the corresponding power signal line 500 is larger, the voltage value of the power signal line 500 is larger to offset the influence of the IR-Drop, thereby improving the brightness uniformity of the display panel.
Fig. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and fig. 11 is a schematic diagram of a pixel circuit according to an embodiment of the present invention. Referring to fig. 10 and 11, in an embodiment of the present invention, optionally, the display area 100 includes pixel units 120 arranged in an array, the pixel units 120 include pixel circuits 121 and light emitting devices D, and the pixel circuits 121 provide driving currents to the light emitting devices D to drive the light emitting devices D to emit light; here, the power supply signal line 500 is connected to the pixel circuit 121, or the power supply signal line 500 is connected to the light emitting device D. The light emitting device D includes a first pole and a second pole, and the first pole of the light emitting device D is connected to the pixel circuit 121; the power supply signal line 500 is connected to the pixel circuit 121, or the power supply signal line 500 is connected to the second pole of the light emitting device D.
There are various ways of arranging the pixel circuits, and fig. 11 illustrates a 2T1C pixel circuit as an example. The pixel circuit 121 includes a switching transistor T1, a driving transistor T2, and a storage capacitor C. A gate of the switching transistor T1 is connected to the SCAN signal SCAN, a first pole of the switching transistor T1 is connected to the data signal Vdata, a second pole of the switching transistor T1 is connected to the gate of the driving transistor T2, one end of the storage capacitor C is connected to the gate of the driving transistor T2, the other end of the storage capacitor C is connected to the first pole of the driving transistor T2, a first pole of the driving transistor T2 is connected to the first power signal line VDD, and a second pole of the driving transistor T2 is connected to the anode of the light emitting device D. The power supply signal line 500 connected to the pixel circuit 121 is a first power supply signal line VDD, and the power supply signal line 500 connected to the light emitting device D is a second power supply signal line VSS. In the embodiment of the present invention, the number of the first power signal lines VDD is set to be at least two, and the first power signal lines VDD respectively provide power to the corresponding display areas 100, and then the number of the second power signal lines VSS is set to be one, and the same power voltage is provided to all the display areas 100; or at least two second power signal lines VSS are provided to supply power to the corresponding display regions 100, respectively, and then one second power signal line VSS is provided to supply the same power supply voltage to all the display regions 100.
Illustratively, the pixel circuit 121 operates in such a manner that when the switching transistor T1 is turned on in response to the SCAN signal SCAN, the data signal Vdata is charged into the storage capacitor C through the switching transistor T1, and the driving transistor T2 is turned on, the anode of the light emitting device D is connected to the power voltage on the first power signal line VDD, the cathode of the light emitting device D is connected to the power voltage on the second power signal line VSS, and the driving transistor T2 supplies a driving current to the light emitting device D, thereby driving the light emitting device D to emit light.
Fig. 12 is a schematic diagram of another pixel circuit according to an embodiment of the present invention, and referring to fig. 12, unlike fig. 11, a first pole of the driving transistor T2 is connected to a cathode of the light emitting device D, and a second pole of the driving transistor T2 is connected to the second power signal line VSS. Among them, the power supply signal line 500 connected to the anode of the light emitting device D is a first power supply signal line VDD, and the power supply signal line 500 connected to the pixel circuit 121 is a second power supply signal line VSS.
With continued reference to fig. 11 and 12, the gate-source voltage of the driving transistor T2 is not only related to the voltage of the first power signal line VDD, but is actually related to the voltage of the second power signal line VSS, and therefore, the driving current of the driving transistor T2 is also related to the voltage of the second power signal line VSS, so that the luminance of the light emitting device D can be changed by adjusting the voltage of the first power signal line VDD and the voltage of the second power signal line VSS, and further, the voltage value of the power signal line 500 is matched to the luminance of the corresponding display area 100 by setting the voltage of the first power signal line VDD or the voltage of the second power signal line VSS.
In fig. 11 and 12, the first pole of the light emitting device D is an anode, the second pole thereof is a cathode, the first power signal line VDD is supplied with a positive voltage, the second power signal line VSS is supplied with a negative voltage, and the second power signal line VSS is used as the power signal line 500 to perform divisional control. Alternatively, the first power supply signal line VDD is subjected to partition control as the power supply signal line 500. This is not a limitation on the present invention, and in other embodiments, the first power signal line VDD may be configured to provide a negative voltage and the second power signal line VSS may be configured to provide a positive voltage, as needed.
In the above embodiments, the 2T1C pixel circuit is taken as an example for explanation, but the present invention is not limited thereto, and in other embodiments, the pixel circuit may be provided in a 7T1C configuration or other configurations as necessary.
With continued reference to fig. 9 and 10, in an embodiment of the present invention, the second poles of the light emitting devices D located in the same display area 100 optionally share one electrode block 600, and the electrode block 600 is connected to the corresponding power signal line 500. The embodiment of the invention arranges the same display area 100 to share one electrode block 600, which is beneficial to simplifying the manufacturing process and reducing the resistance of the electrode block 600.
Fig. 13 is a schematic cross-sectional structure diagram of a display panel according to an embodiment of the invention. With reference to fig. 9, 10 and 13, alternatively, the first electrode of the light emitting device D is an anode, the anode of the light emitting device D is connected to the pixel circuit 121, the second electrode of the light emitting device D is a cathode, each light emitting device D is connected to a common cathode, and the electrode block 600 is a cathode block. The power signal line 500 connected to the cathode block is a second power signal line VSS which supplies a negative voltage to the cathode block. The cathode blocks corresponding to different display areas 100 can be divided by a laser etching dividing process.
The embodiment of the invention also provides a driving method of the display panel, and the driving method of the display panel can be applied to the display panel provided by any embodiment of the invention. Fig. 14 is a flowchart of a driving method of a display panel according to an embodiment of the invention. With reference to fig. 1 and 14, the driving method includes the steps of:
and S110, determining a driving signal of a corresponding scanning driving circuit according to the display states of at least two display areas.
Specifically, the display states of at least two display regions 100 in the display panel are different, and the driving signals of the corresponding scan driving circuits 200 are also different, thereby realizing the divisional driving of the display panel. For example, if one of the display regions 100 displays a picture, the driving signal of the corresponding scan driving circuit 200 is a driving signal required for displaying; if the other display regions 100 are not displayed at all, the corresponding scan driving circuit 200 has no driving signal or a driving signal of a constant level.
And S120, providing a driving signal to the corresponding display area by at least two scanning driving circuits.
Illustratively, when the display states of at least two display regions 100 in the display panel are different, the driving signals provided by the corresponding scan driving circuits 200 are also different.
According to the driving method of the display panel provided by the embodiment of the invention, the driving signals of the corresponding scanning driving circuits 200 are determined according to the display states of at least two display areas 100, and the at least two scanning driving circuits 200 provide the driving signals for the corresponding display areas 100, so that the partition driving of the display panel is realized. Compared with the existing display panel, the embodiment of the invention can control the scanning driving circuit 200 corresponding to the display area 100 in normal display to work, and control the scanning driving circuit 200 corresponding to the display area 100 in the black state to not work, i.e. control at least part of the scanning driving circuit 200 not to generate power consumption. Therefore, the embodiment of the invention is beneficial to reducing the power consumption of the scanning driving circuit 200 and reducing the power consumption of the display panel.
In addition to the above embodiments, the driving method of the display panel is different depending on the arrangement of the display regions, and the following description will be made specifically.
Referring to fig. 4, in an embodiment of the present invention, optionally, at least two display regions 100 are arranged in a line along a first direction X; the display panel further includes a plurality of data signal lines 300 respectively corresponding to the at least two display regions 100. Correspondingly, the driving method comprises the following steps:
s210, determining the data signals of the corresponding data signal lines according to the display state requirements of at least two display areas.
S220, the plurality of data signal lines provide data signals to the corresponding display regions.
Illustratively, the display panel includes two display areas 100, wherein a part of the data signal lines 300 supplies data signals to the display area 100 positioned on the left, and another part of the data signal lines 300 supplies data signals to the display area 100 positioned on the right. One of the display regions 100 displays a picture, the corresponding data signal line 300 provides a data signal required for display, and the other display region 100 is in a black state, so that the data signal does not need to be provided thereto, and the corresponding data driving circuit does not work and does not generate power consumption, thereby being beneficial to further reducing the overall power consumption of the display panel.
Referring to fig. 5, in an embodiment of the present invention, optionally, at least two display regions 100 are arranged in a column along the second direction Y; and along the second direction Y, at least two scan driving circuits 200 are arranged in a row; the display panel further includes a plurality of data signal lines 300, and the plurality of data signal lines 300 extend in the second direction Y. Accordingly, the driving method includes the steps of:
s310, determining data signals of the data signal lines according to the display state requirements of at least two display areas.
And S320, providing data signals to the at least two display areas by the plurality of data signal lines in a time-sharing manner.
Illustratively, the display area 100 located at the upper side operates normally, the display area 100 located at the lower side does not display, and the plurality of data signal lines 300 supply normal data signals to the display area 100 of the display screen located at the upper side in the first half of one frame; the underlying display area 100 is in a black state, and thus, there is no need to provide data signals or constant black data signals thereto, i.e., there is no data signal or level change in the second half of a frame for the plurality of data signal lines 300, and the data driving circuit may not operate in this phase, and no power consumption is generated, thereby facilitating reduction of the overall power consumption of the display panel.
Referring to fig. 9, in an embodiment of the present invention, optionally, the display panel further includes at least two power signal lines 500, the at least two power signal lines 500 respectively correspond to the at least two display areas 100, the power signal lines 500 are used for providing power signals to the corresponding display areas 100, and a voltage value of the power signal lines 500 is matched with a luminance of the corresponding display areas 100. Illustratively, the driving method of the display panel is to determine the voltage value of the corresponding power signal line 500 according to the luminance of at least two display areas 100; at least two power signal lines 500 receive the voltage values to drive the display area to display the image. The brightness of at least two display areas 100 in the display panel is different, and the voltage values received by at least two power signal lines 500 are also different, so that the partition control of the power signals of the display panel is realized.
Fig. 15 is a driving timing diagram according to an embodiment of the invention. On the basis of the above embodiments, optionally, the embodiment of the present invention provides a specific driving timing scheme. Referring to fig. 5, 9 and 15, the start signal line 111 provides A start signal SIN-A and the power signal line 500 provides A power signal VSS-A corresponding to the upper display region 100; the start signal line 111 provides a start signal SIN-B and the power signal line 500 provides a power signal VSS-B corresponding to the underlying display region 100. The two display regions 100 share the data signal line 300, and the data signal line 300 supplies the data signal data. If the upper display areA 100 is normally operated and the lower display areA 100 is not displayed, the start signal SIN-A is normally provided, the start signal SIN-B has no signal or constant high/low level, the power signal VSS-B is VDD, and the power signal VSS-A is normal voltage. The data signal line 300 supplies a normal data signal to the display area 100 located above in the first half of one frame; it is not necessary to supply a data signal thereto or a constant black data signal in the latter half of one frame, that is, the plurality of data signal lines 300 have no data signal or level change in the latter half of one frame. Therefore, the display area 100 located below is in a black state and the corresponding scan driving circuit does not generate power consumption; the power supply signal VSS-B corresponding to the display area is VDD, and the pixel circuit does not generate power consumption; the data driving circuit can not work at the stage, and power consumption is not generated; the embodiment of the invention is beneficial to reducing the whole power consumption of the display panel.
The embodiment of the invention also provides a display device, which comprises the display panel according to any embodiment of the invention, and the display device can be a mobile phone, a computer, a tablet computer, an intelligent wearable device or other electronic equipment with a display function. The display device provided by the embodiment of the present invention includes the display panel provided by any of the above embodiments of the present invention, and thus has a corresponding structure and beneficial effects of the display panel, which are not described herein again.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A display panel, comprising:
at least two display areas;
the scanning driving circuits are respectively corresponding to the at least two display areas and used for providing driving signals for the corresponding display areas; wherein at least two of the scan driving circuits are driven individually.
2. The display panel according to claim 1, further comprising:
at least two control signal lines respectively corresponding to the at least two scanning driving circuits, wherein the control signal lines are used for providing control signals for the corresponding scanning driving circuits;
preferably, the scan driving circuit includes cascade-connected shift registers; the control signal lines comprise starting signal lines, and at least two starting signal lines are respectively connected with the first-stage shift registers of at least two scanning driving circuits;
alternatively, the control signal line comprises a clock signal line; at least two clock signal lines are respectively connected with the shift registers of at least two scanning driving circuits;
or, the control signal line comprises a level signal line; and at least two level signal lines are respectively connected with the shift registers of at least two scanning driving circuits.
3. The display panel according to claim 1, wherein at least two of the display regions are arranged in a line along a first direction; along the first direction, part of the scanning driving circuit is positioned at one side of the whole display area; the other part of the scanning driving circuit is positioned at the other side of the whole display area;
preferably, the number of the display regions is two, and the number of the scan driving circuits is two; along the first direction, two display areas are positioned between two scanning driving circuits;
preferably, the display panel further includes:
at least two data signal lines respectively corresponding to the at least two display regions, the data signal lines being used for providing data signals to the corresponding display regions; wherein the data signal line extends in a second direction, the second direction crossing the first direction.
4. The display panel according to claim 1, wherein at least two of the display regions are arranged in a column along the second direction; at least two scanning driving circuits are arranged in a column along the second direction;
preferably, the display panel further includes a data signal line extending along the second direction, and the data signal line is configured to provide a data signal to at least two of the display regions in a time-sharing manner.
5. The display panel according to claim 1, wherein at least two of the display regions are arranged in an array; along a first direction, part of the scanning driving circuits are positioned on one side of the whole display area, and the other part of the scanning driving circuits are positioned on the other side of the whole display area; at least part of the scanning driving circuits are arranged in a column along the second direction; wherein the second direction intersects the first direction;
preferably, the display panel further includes a data signal line extending along the second direction, and the data signal line is configured to provide a data signal to at least two of the display regions located in one column in a time-sharing manner.
6. The display panel according to claim 1, further comprising a folding axis for implementing a folded display of the display panel, wherein at least two of the display regions are respectively located on two sides of the folding axis.
7. The display panel according to claim 1, further comprising:
at least two power signal lines respectively corresponding to at least two display areas, wherein the power signal lines are used for providing power signals to the corresponding display areas, and the voltage values of the power signal lines are matched with the brightness of the corresponding display areas;
preferably, the display region comprises pixel units arranged in an array, the pixel units comprise pixel circuits and light emitting devices, and the pixel circuits provide driving currents for the light emitting devices to drive the light emitting devices to emit light; wherein the power supply signal line is connected to the pixel circuit or the power supply signal line is connected to the light emitting device;
preferably, the light emitting device includes a first pole and a second pole, and the first pole of the light emitting device is connected to the pixel circuit; the power supply signal line is connected to the pixel circuit, or the power supply signal line is connected to a second pole of the light emitting device.
8. A driving method of a display panel for driving the display panel according to any one of claims 1 to 7, the driving method comprising:
determining a driving signal of the corresponding scanning driving circuit according to the display states of at least two display areas;
at least two of the scan driving circuits provide the driving signals to the corresponding display regions.
9. The driving method according to claim 8, wherein at least two of the display regions are arranged in a line along the first direction; the display panel also comprises at least two data signal lines, and the at least two data signal lines respectively correspond to the at least two display areas;
the driving method further includes:
determining the data signals of the corresponding data signal lines according to the display state requirements of at least two display areas;
at least two data signal lines provide the data signals to the corresponding display regions;
or at least two display areas are arranged in a column along the second direction; at least two scanning driving circuits are arranged in a column along the second direction; the display panel further comprises a data signal line extending along the second direction; the driving method further includes:
determining data signals of the data signal lines according to the display state requirements of at least two display areas;
the data signal lines provide data signals to at least two of the display regions in a time-sharing manner.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 7.
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Application publication date: 20210820 |