CN110136634B - Display panel, driving method and display device - Google Patents
Display panel, driving method and display device Download PDFInfo
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- CN110136634B CN110136634B CN201910580346.6A CN201910580346A CN110136634B CN 110136634 B CN110136634 B CN 110136634B CN 201910580346 A CN201910580346 A CN 201910580346A CN 110136634 B CN110136634 B CN 110136634B
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- 238000010586 diagram Methods 0.000 description 15
- 230000005540 biological transmission Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
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- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/39—Control of the bit-mapped memory
- G09G5/393—Arrangements for updating the contents of the bit-mapped memory
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
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Abstract
The embodiment of the invention provides a display panel, a driving method and a display device, relates to the technical field of display, and can improve the refreshing frequency of the display panel after being bent and optimize the display performance. The display panel includes: the display area comprises a pixel driving circuit array, and each row of pixel driving circuits are connected with corresponding data lines; a folding axis extending in the row direction, the display area being divided into a first display area and a second display area by the folding axis; the data line comprises a first data line segment and a second data line segment, the first data line segment is located in a first display area, the second data line segment is located in a second display area, the tail end of the first data line segment is connected with the head end of the second data line segment through a switch unit, the switch unit controls the connection and the disconnection of the first data line segment and the second data line segment, the first data line segment is connected with sub-pixels in rows 1 to n, the second data line segment is connected with sub-pixels in rows n +1 to m, the sub-pixels in rows 1 to n are located in the first display area, and the sub-pixels in rows n +1 to m are located in the second display area.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a display panel, a driving method and a display device.
[ background of the invention ]
Along with the continuous development of display technology, the size of display panel is bigger and bigger, especially bendable display panel, and this type of display panel has bigger size.
In order to drive the normal light emission of the display panel, data signals are written to a plurality of rows of sub-pixels of the display panel in a time-sharing manner during one driving period. However, as the size of the display panel increases, the number of rows of sub-pixels in the display panel increases, which results in a shorter time for writing data signals to the sub-pixels of each row in one driving period. However, in order to ensure the validity of the pixel writing data signal, it is necessary to ensure a certain data signal writing time, and therefore, there is a limit to increase the refresh frequency.
[ summary of the invention ]
In view of this, embodiments of the present invention provide a display panel, a driving method thereof, and a display device, which can improve the refresh frequency of the display panel after bending and optimize the display performance.
In one aspect, an embodiment of the present invention provides a display panel, including:
the display device comprises a display area, a data line and a data line, wherein the display area comprises a pixel driving circuit array arranged in a plurality of rows and columns, and each column of pixel driving circuit is electrically connected with the corresponding data line;
A folding axis extending in a row direction, the display area being divided into a first display area and a second display area by the folding axis;
each data line comprises a first data line segment located in the first display area and a second data line segment located in the second display area, in each data line, the tail end of the first data line segment is electrically connected to the head end of the second data line segment through a switch unit, the switch unit is used for controlling the connection and disconnection between the first data line segment and the second data line segment, the first data line segment is electrically connected to the sub-pixels of the 1 st to n th rows in the display area, the second data line segment is electrically connected to the sub-pixels of the n +1 th to m th rows in the display area, m > n > 1, the sub-pixels of the 1 st to n th rows are located in the first display area, and the sub-pixels of the n +1 th to m th rows are located in the second display area.
Optionally, the switch unit includes a first switch tube and a second switch tube;
the first end of the first switch tube is electrically connected to the first data line segment, the second end of the first switch tube is electrically connected to the second data line segment, and the control end of the first switch tube is electrically connected to a first control signal line;
The first end of the second switch tube is electrically connected to the first data line segment, and the control end of the second switch tube is electrically connected to the second control signal line.
Optionally, a second end of the second switch tube is electrically connected to the first control signal line, and the first switch tube is a PMOS.
Optionally, one end of the second data line segment, which is far away from the first data line segment, is electrically connected to the driving chip.
In another aspect, an embodiment of the present invention provides a display device, including the display panel.
In another aspect, an embodiment of the present invention provides a driving method for the display panel, where the method includes:
when the display panel is in a flat state, the switch unit controls the first data line segment and the second data line segment in each data line to be conducted;
when the display panel is in a bent state, the switch unit controls the first data line segment and the second data line segment in each data line to be cut off.
Optionally, the refresh frequency of the display panel in the bent state is higher than the refresh frequency of the display panel in the flat state.
Optionally, when the display panel is in a flat state, providing data signals to the first data line segment and the second data line segment;
when the display panel is in a bent state, fixed picture display voltage is transmitted to the first data line segment, and a data signal is provided to the second data line segment.
Optionally, the switch unit includes a first switch tube and a second switch tube;
the first end of the first switching tube is electrically connected to the first data line segment, the second end of the first switching tube is electrically connected to the second data line segment, and the control end of the first switching tube is electrically connected to a first control signal line;
the first end of the second switch tube is electrically connected to the first data line segment, and the control end of the second switch tube is electrically connected to the second control signal line;
when the display panel is in a flat state, providing a conducting level for the first control signal line to control the first switch tube to be conducted, and providing a cut-off level for the second control signal line to control the second switch tube to be cut off;
when the display panel is in a bent state, a cut-off level is provided for the first control signal line to control the first switch tube to be cut off, a conduction level is provided for the second control signal line to enable the second switch tube to be conducted, a fixed picture display voltage is provided for the second end of the second switch tube, the fixed picture display voltage is transmitted to the first data line segment, and a data signal is provided for the second data line segment.
Optionally, a second end of the second switch tube is electrically connected to the first control signal line, and the first switch tube is a PMOS;
when the display panel is in a flat state, providing a low level for the first control signal line to control the first switch tube to be switched on, and providing a cut-off level for the second control signal line to control the second switch tube to be switched off;
when the display panel is in a bent state, a high level is provided for the first control signal line to control the first switch tube to be cut off, a conducting level is provided for the second control signal line to control the second switch tube to be conducted, and the high level on the first control signal line is transmitted to the first data line segment.
Optionally, when the display panel is switched from the flat state to the bent state, after the voltage on the first control signal line is switched from the low level to the high level, the voltage on the second control signal line is switched from the high level to the low level.
According to the display panel, the driving method and the display device in the embodiment of the invention, when the display panel is in a bent state, the first data line segment and the second data line segment in each data line are controlled to be disconnected, at the moment, the load on a data signal transmission path is reduced, the data signal is transmitted to the corresponding display area only through part of the data line segments, and the transmission delay of the data signal is reduced, so that the data signal can be written into the sub-pixel more quickly, at the moment, the refreshing frequency of the display panel can be increased, the display performance can be optimized, and the problems of mouse tailing or ghost and the like of a screen during half-screen display can be effectively improved due to the higher refreshing rate.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a display panel according to an embodiment of the present invention
FIG. 2 is a schematic diagram of an equivalent circuit of the switch unit of FIG. 1;
FIG. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an equivalent circuit of the switch unit of FIG. 1;
FIG. 5 is a timing diagram of the switch unit of FIG. 4;
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 a display device according to an embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the description of the invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely a relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
It should be understood that although the terms first and second may be used to describe the display area and the data line segment in the embodiments of the present invention, these display area and data line segment should not be limited to these terms, and these terms are only used to distinguish the display area and the data line segment from each other. For example, the first display region may also be referred to as the second display region, and similarly, the second display region may also be referred to as the first display region without departing from the scope of embodiments of the present invention.
An embodiment of the present invention provides a display panel, as shown in fig. 1, fig. 1 is a schematic structural diagram of a display panel in an embodiment of the present invention, the display panel includes a display area 1, the display area 1 includes an array of pixel driving circuits 2 arranged in a plurality of rows and columns, each row of pixel driving circuits 2 is electrically connected to a corresponding data line 3; and a folding axis 4 extending in the row direction, the display area 1 being divided into a first display area 5 and a second display area 6 by the folding axis 4. Each data line 3 comprises a first data line segment 7 located in the first display area 5 and a second data line segment 8 located in the second display area 6, in each data line 3, the end of the first data line segment 7 is electrically connected to the head end of the second data line segment 8 through a switch unit 9, in fig. 1, the head end of the first data line segment 7 refers to the uppermost end thereof, the end refers to the lowermost end thereof, similarly, the head end of the second data line segment 8 refers to the uppermost end thereof, and the end refers to the lowermost end thereof, the switch unit 9 is used for controlling the conduction and the cut-off between the first data line segment 7 and the second data line segment 8, the first data line segment 7 is electrically connected to the sub-pixels of the 1 st to n rows in the display area 1, the second data line segment 8 is electrically connected to the sub-pixels of the n +1 th to m rows in the display area 1, m > n > 1, the sub-pixels of the 1 st to n rows are located in the first display area 5, the n +1 th to m th rows of sub-pixels are located in the second display region 6.
Specifically, when the display panel is in a flat state, the switch unit 9 controls conduction between the first data line segment 7 and the second data line segment 8, and the data signal is transmitted to the pixel driving array of the sub-pixels in the rows 1 to m via the conducted first data line segment 7 and second data line segment 8, so as to drive the sub-pixels in the first display area 5 and the second display area 6 to emit light, thereby realizing full-screen display. When the display panel is in a bent state, the switch unit 9 controls the first data line segment 7 and the second data line segment 8 to be cut off, the data signal is transmitted to the pixel driving array of the n +1 th to m th rows of sub-pixels only through the second data line segment 8, the sub-pixels of the second display region 6 are driven to emit light to realize a display picture viewed by a user, at this time, the first display region 5 does not display a picture or displays a fixed picture, or the data signal is transmitted to the pixel driving array of the 1 st to n th rows of sub-pixels only through the first data line segment 7, the sub-pixels of the first display region 5 are driven to emit light to realize the display picture viewed by the user, at this time, the second display region 6 does not display a picture or displays a fixed picture, and half-screen display is realized. In the bent state, for example, the second display region 6 is used to display a picture, and compared with the flat state, for the second data line segment 8 used for transmitting the data signal, because the number of connected sub-pixels is reduced, that is, the load of the second data line segment 8 is reduced, the delay of data signal transmission on the second data line segment 8 is reduced, and therefore, the data signal can be written into the sub-pixel more quickly, and at this time, the refresh frequency of the display panel can be increased to optimize the display performance.
According to the display panel in the embodiment of the invention, when the display panel is in a bent state, the first data line segment and the second data line segment in each data line are controlled to be disconnected, at the moment, the load on a data signal transmission path is reduced, the data signal is transmitted to the corresponding display area only through part of the data line segments, and the transmission delay of the data signal is reduced, so that the data signal can be written into the sub-pixel more quickly, at the moment, the refreshing frequency of the display panel can be improved, the display performance is optimized, and the problems of mouse trailing or ghost and the like of a screen during half-screen display can be effectively improved due to the higher refreshing rate. Particularly, for mobile game users, the requirements of the users on the refresh frequency of the screen are high, and in order to improve the operation flexibility, small-screen pictures are mostly adopted for operation, so that the display panel provided by the embodiment of the invention can produce more remarkable effects when being applied to the field of hand games.
Alternatively, as shown in fig. 1, fig. 2 and fig. 3, fig. 2 is an equivalent circuit schematic diagram of the switch unit in fig. 1, fig. 3 is a structural schematic diagram of another display panel in an embodiment of the present invention, and each switch unit 9 includes a first switch tube 10 and a second switch tube 11. A first end of the first switching tube 10 is electrically connected to the first data line segment 7, a second end of the first switching tube 10 is electrically connected to the second data line segment 8, and a control end of the first switching tube 10 is electrically connected to the first control signal line CL 1; a first end of the second switch tube 11 is electrically connected to the first data line segment 7, and a control end of the second switch tube 11 is electrically connected to the second control signal line CL 2.
Specifically, each data line 3 is provided with one switch unit 9, in the structure illustrated in fig. 3, the control terminal of each first switch tube 10 is electrically connected to the same first control signal line CL1, and the control terminal of each second switch tube 11 is electrically connected to the same second control signal line CL2, which is simple and can share the signal line, but the connection manner is only an example, for example, in other realizable embodiments, it may also be arranged that the control terminal of each first switch tube 10 is electrically connected to the corresponding first control signal line CL1, each first switch tube 10 is controlled by an independent signal, the control terminal of each second switch tube 11 is electrically connected to the corresponding second control signal line CL2, and each second switch tube 11 is controlled by an independent signal. When the display panel is in a flat state, the first control signal line CL1 provides a conducting level, the first switching tube 10 is conducted under the action of the conducting level to control the conduction between the first data line segment 7 and the second data line segment 8, the data signal is transmitted to the corresponding pixel driving array through the first data line segment 7 and the second data line segment 8, and the display panel is driven to display in a full screen; meanwhile, the second control signal line CL2 provides a cut-off level, and the second switching tube 11 is cut off under the action of the cut-off level, so that the connection between the second end and the first end of the second switching tube 11 is broken, thereby preventing other signals from being written into the first data line segment 7 through the second switching tube 11, and preventing the data signals transmitted on the first data line segment 7 from being influenced, which affects normal display. When the display panel is in a bent state, the first control signal line CL1 provides a cut-off level, the first switching tube 10 is cut off under the action of the cut-off level to control the cut-off between the first data line segment 7 and the second data line segment 8, and the data signal is transmitted to the corresponding pixel driving circuit 2 only through the second data line segment 8 to drive the display panel to display on a half screen; meanwhile, the second control signal line CL2 provides a conducting level, the second switch tube 11 is conducted under the action of the conducting level, so that the connection between the second end and the first end of the second switch tube 11 is conducted, the fixed picture display voltage is further provided to the second end of the second switch tube 11, the fixed picture display voltage is transmitted to the first data line segment 7, and the first display area 5 is controlled to display a fixed picture, such as a black picture or a trademark pattern, so as to avoid the first display area 5 from being randomly displayed.
Alternatively, as shown in fig. 4, fig. 5 and fig. 6, fig. 4 is an equivalent circuit schematic diagram of the switch unit in fig. 1, fig. 5 is a timing diagram of the switch unit in fig. 4, fig. 6 is a schematic structural diagram of another display panel in an embodiment of the present invention, the second end of the second switch tube 11 is electrically connected to the first control signal line CL1, and the first switch tube 10 is a PMOS.
Specifically, the following description will take the second switch transistor as PMOS as an example to illustrate the operation process of the switch unit in fig. 4, when the display panel is in the flat state t1, the first control signal line CL1 provides low level to control the first switch transistor 10 to be turned on, the second control signal line CL2 provides high level to control the second switch transistor 11 to be turned off, at this time, the low level provided by the first control signal line CL1 is not transmitted to the first data line segment 7, and does not affect the data signal transmitted in the first data line segment 7, the data signals are transmitted in both the first data line segment 7 and the second data line segment 8, and the mesh in fig. 5 is filled with data signals. When the display panel is in the bending state t2, the first control signal line CL1 provides a high level to control the first switch tube 10 to be turned off, the second control signal line CL2 provides a low level to control the second switch tube 11 to be turned on, and at this time, the high level provided by the first control signal line CL1 is transmitted to the first data line segment 7 through the turned-on second switch tube 11, that is, the high-level data signal is written into the sub-pixel in the first display area 5, and the first display area 5 is controlled to display the black picture. In addition, when the display panel is switched from the flat state t1 to the bending state t2, a buffer state t 'may exist between the flat state t1 and the bending state t2, and after the voltage on the first control signal line CL1 is switched from a low level to a high level in the buffer state t', the voltage on the second control signal line CL2 is switched from a high level to a low level to control the second switching tube 11 to be turned on, so as to control the fixed picture display voltage to be transmitted to the first data line segment 7, drive the first display region 5 to display the fixed picture, and prevent the voltage on the second control signal line CL2 from being switched to a low level and then being transmitted to the first display region 5, so that the first display region 5 is suddenly lightened, and abnormal display occurs in the first display region 5 when the state of the display panel is switched. Based on the connection mode, when the display panel is in a bent state, the fixed picture display voltage received by the first data line segment 7 can be provided by the first control signal line CL1, and no additional signal line needs to be arranged, so that the manufacturing process is simplified, and the space occupied by the signal line is reduced. It should be noted that the second switch tube 11 may be PMOS or NMOS, and the second control signal line CL2 only needs to provide a corresponding on or off level to it according to the type of the tube.
It can be understood that the data signal is provided by the driving chip, and when the display panel is in the bent state, in order to further shorten the transmission path of the data signal, reduce the transmission delay of the data signal, and increase the refresh frequency, as shown in fig. 6, one end of the second data line segment 8 away from the first data line segment 7 is electrically connected to the driving chip 12. The first control signal line CL1 and the second control signal line CL2 may be electrically connected to the driver chip 12, and the driver chip 12 may control the switching unit 9.
Fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention, and fig. 7 is a schematic structural diagram of a display device including the display panel 100. The specific structure of the display panel 100 has been described in detail in the above embodiments, and is not described herein again. The display device can be any electronic equipment with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic paper book or a television.
According to the display device in the embodiment of the invention, when the display device is in a bent state, the first data line segment and the second data line segment in each data line are controlled to be disconnected, at the moment, the load on a data signal transmission path is reduced, the data signal is transmitted to the corresponding display area only through part of the data line segments, and the transmission delay of the data signal is reduced, so that the data signal can be written into the sub-pixel more quickly, at the moment, the refresh frequency of the display panel can be improved to optimize the display performance, and the problems of mouse trailing or ghost shadow and the like of a screen during half-screen display can be effectively improved due to higher refresh rate.
An embodiment of the present invention further provides a driving method, used for the display panel, where the driving method includes: step 101, when the display panel is in a flat state, the switch unit 9 controls the conduction between the first data line segment 7 and the second data line segment 8 in each data line 3; and 102, when the display panel is in a bent state, controlling the first data line segment 7 and the second data line segment 8 in each data line 3 to be cut off through the switch unit 9.
Specifically, for example, when the display panel is in a flat state and in a bent state, different display areas are required to be used for displaying a picture, state information of the two states may be acquired by the driving chip, when the driving chip monitors that the display panel is in the flat state, the step 101 is executed to implement control of the switch unit, and when the driving chip monitors that the display panel is in the bent state, the step 102 is executed to implement control of the switch unit. The specific structure and principle of the display panel and the driving method are the same as those of the above embodiments, and are not described herein again.
According to the driving method in the embodiment of the invention, when the display panel is in a bent state, the first data line segment and the second data line segment in each data line are controlled to be disconnected, the load on a data signal transmission path is reduced at the moment, the data signal is transmitted to the corresponding display area only through part of the data line segments, and the transmission delay of the data signal is reduced, so that the data signal can be written into the sub-pixel more quickly, at the moment, the refreshing frequency of the display panel can be improved to optimize the display performance, and the problems of mouse tailing or ghost and the like of a screen during half-screen display can be effectively improved due to higher refreshing rate.
Optionally, the refresh frequency of the display panel in the bent state is higher than the refresh frequency of the display panel in the flat state.
Specifically, for example, when the driving chip monitors that the display panel is in the flat state, the step 101 is executed to implement the control of the switch unit, and at the same time, the display panel is controlled to display the picture at the first refresh frequency, and when the driving chip monitors that the display panel is in the bent state, the step 102 is executed to implement the control of the switch unit, and at the same time, the display panel is controlled to display the picture at the second refresh frequency, where the second refresh frequency is greater than the first refresh frequency, for example, the picture display of the display panel in the flat state needs to scan p rows of sub-pixels, at this time, the first refresh frequency is 60Hz, that is, the screen picture refresh is implemented 60 times per second, 1/60 seconds is needed each time, and 1/60p seconds is needed each time for each row of sub-pixels to be scanned, at this time, since each data line 3 is connected to p rows of sub-pixels, the load is large, a time of 1/60p seconds is needed to ensure that the sub-pixels can be charged, the picture is normally displayed, so that the refresh rate cannot be improved; however, the display panel only needs to use the second display area 6 to display the picture in the bent state, at this time, the second data line segment 8 is disconnected from the first data line segment 7, and the second data line segment 8 only connects with p/2 rows of sub-pixels, at this time, because the load on each second data line segment 8 is small, the sub-pixels can be charged in 1/120p seconds only, and the picture display is normal, therefore, in the bent state, the refresh frequency of the display panel can be increased, for example, to 120 Hz.
Optionally, when the display panel is in a flat state, data signals are provided to the first data line segment 7 and the second data line segment 8; at this time, the data signal is transmitted to the pixel driving array of the sub-pixels in the 1 st to m th rows through the turned-on first data line segment 7 and second data line segment 8, and the sub-pixels in the first display area 5 and the second display area 6 are driven to emit light, so that full-screen display is realized. When the display panel is in a bent state, a fixed picture display voltage is transmitted to the first data line segment 7, and a data signal is supplied to the second data line segment 8. At this time, the data signal is transmitted to the pixel driving circuit of the n +1 th to m th rows of sub-pixels only through the second data line segment 8, and the sub-pixels of the second display region 6 are driven to emit light. Meanwhile, by further transmitting the fixed picture display voltage to the first data line segment 7, the first display area 5 is controlled to display a fixed picture, such as a black picture or a trademark pattern, so that the first display area 5 can be prevented from being displayed disorderly.
Alternatively, as shown in fig. 2, 3, 4 or 6, the switching unit 9 includes a first switching tube 10 and a second switching tube 11. A first end of the first switching tube 10 is electrically connected to the first data line segment 7, a second end of the first switching tube 10 is electrically connected to the second data line segment 8, and a control end of the first switching tube 10 is electrically connected to the first control signal line CL 1; a first end of the second switch tube 11 is electrically connected to the first data line segment 7, and a control end of the second switch tube 11 is electrically connected to the second control signal line CL 2.
Specifically, when the display panel is in a flat state, an on level is provided to the first control signal line CL1 to control the first switch tube 10 to be turned on, an off level is provided to the second control signal line CL2 to control the second switch tube 11 to be turned off, so that the influence of other signals written into the first data line segment 7 through the second switch tube 11 on the data signal transmitted on the first data line segment 7 to influence normal display is avoided. When the display panel is in a bent state, an off level is provided to the first control signal line CL1 to control the first switch tube 10 to be turned off, an on level is provided to the second control signal line CL2 to turn on the second switch tube 11, a fixed picture display voltage is provided to the second end of the second switch tube 11 to transmit the fixed picture display voltage to the first data line segment 7, and a data signal is provided to the second data line segment 8 to ensure that the second display region 6 normally displays pictures, and at the same time, the first display region 5 displays fixed pictures, such as black pictures or trademark patterns, to avoid the problem of indiscriminate display.
Alternatively, as shown in fig. 4, 5 and 6, the second end of the second switch tube 11 is electrically connected to the first control signal line CL1, and the first switch tube 10 is PMOS. Based on this, when the display panel is in a flat state, a low level is supplied to the first control signal line CL1 to control the first switch tube 10 to be turned on, and an off level is supplied to the second control signal line CL2 to control the second switch tube 11 to be turned off; when the display panel is in the bending state, a high level is provided to the first control signal line CL1 to control the first switch tube 10 to be turned off, an on level is provided to the second control signal line CL2 to control the second switch tube 11 to be turned on, and the high level on the first control signal line CL1 is transmitted to the first data line segment 7.
Specifically, when the display panel is in the bent state, the fixed picture display voltage received by the first data line segment 7 can be provided by the first control signal line CL1 without additionally providing other signal lines, thereby simplifying the manufacturing process and reducing the space occupied by the signal lines.
Optionally, for example, the first switch tube 10 and the second switch tube 11 are both PMOS, when the display panel is switched from the flat state to the bent state, after the voltage on the first control signal line CL1 is switched from the low level to the high level, the voltage on the second control signal line CL2 is switched from the high level to the low level, so as to control the second switch tube 11 to be turned on, and further control the fixed picture display voltage to be transmitted to the first data line segment 7, so as to drive the first display area 5 to display the fixed picture, thereby preventing the first display area 5 from displaying abnormally when the display panel is switched from the state.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A display panel, comprising:
the display device comprises a display area, a data line and a data line, wherein the display area comprises a pixel driving circuit array which is arranged in a plurality of rows and columns, and each column of pixel driving circuit is electrically connected with the corresponding data line;
a folding axis extending in a row direction, the display area being divided into a first display area and a second display area by the folding axis;
each data line comprises a first data line segment positioned in the first display area and a second data line segment positioned in the second display area, in each data line, the tail end of the first data line segment is electrically connected to the head end of the second data line segment through a switch unit, the switch unit is used for controlling the connection and disconnection between the first data line segment and the second data line segment, the first data line segment is electrically connected to the sub-pixels of the 1 st to n th rows in the display area, the second data line segment is electrically connected to the sub-pixels of the n +1 th to m th rows in the display area, m > n > 1, the sub-pixels of the 1 st to n th rows are positioned in the first display area, and the sub-pixels of the n +1 th to m th rows are positioned in the second display area;
the switch unit comprises a first switch tube and a second switch tube; the first end of the first switch tube is electrically connected to the first data line segment, the second end of the first switch tube is electrically connected to the second data line segment, and the control end of the first switch tube is electrically connected to a first control signal line; the first end of the second switch tube is electrically connected to the first data line segment, the control end of the second switch tube is electrically connected to a second control signal line, and the second end of the second switch tube is electrically connected to the first control signal line.
2. The display panel according to claim 1,
the first switch tube is PMOS.
3. The display panel according to claim 1,
one end of the second data line segment, which is far away from the first data line segment, is electrically connected to the driving chip.
4. A display device characterized by comprising the display panel according to any one of claims 1 to 3.
5. A driving method for a display panel according to any one of claims 1 to 3, the method comprising:
when the display panel is in a flat state, the switch unit controls the first data line segment and the second data line segment in each data line to be conducted;
when the display panel is in a bent state, the switch unit controls the first data line segment and the second data line segment in each data line to be cut off.
6. The driving method according to claim 5,
the refresh frequency of the display panel in the bent state is higher than the refresh frequency of the display panel in the flat state.
7. The driving method according to claim 5,
When the display panel is in a flat state, providing data signals to the first data line segment and the second data line segment;
when the display panel is in a bent state, fixed picture display voltage is transmitted to the first data line segment, and a data signal is provided to the second data line segment.
8. The driving method according to claim 5,
when the display panel is in a flat state, providing a conducting level for the first control signal line to control the first switch tube to be conducted, and providing a cut-off level for the second control signal line to control the second switch tube to be cut off;
when the display panel is in a bent state, a cut-off level is provided for the first control signal line to control the first switch tube to be cut off, a conduction level is provided for the second control signal line to enable the second switch tube to be conducted, a fixed picture display voltage is provided for the second end of the second switch tube, the fixed picture display voltage is transmitted to the first data line segment, and a data signal is provided for the second data line segment.
9. The driving method according to claim 8,
The first switch tube is PMOS;
when the display panel is in a flat state, providing a low level for the first control signal line to control the first switch tube to be switched on, and providing a cut-off level for the second control signal line to control the second switch tube to be cut off;
when the display panel is in a bent state, a high level is provided for the first control signal line to control the first switch tube to be cut off, a conducting level is provided for the second control signal line to control the second switch tube to be conducted, and the high level on the first control signal line is transmitted to the first data line segment.
10. The driving method according to claim 9,
when the display panel is switched from the flat state to the bent state, after the voltage on the first control signal line is switched from the low level to the high level, the voltage on the second control signal line is switched from the high level to the low level.
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| CN111063293B (en) * | 2020-01-02 | 2022-10-14 | 厦门天马微电子有限公司 | Display panel, driving method thereof and display device |
| CN111292626B (en) * | 2020-03-03 | 2022-12-02 | 武汉天马微电子有限公司 | Flexible display panel and display device |
| CN111816139B (en) * | 2020-06-17 | 2022-05-17 | 维沃移动通信有限公司 | Screen refresh rate switching method and electronic equipment |
| CN113096600B (en) * | 2021-03-30 | 2022-09-06 | 京东方科技集团股份有限公司 | Folding display panel, folding display device, driving method of folding display device and electronic equipment |
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