Display panel, display device, and method for driving display panel

Abstract

The present application provides a display panel, a display device, and a driving method for a display panel. A control switch is set in a repeating unit to control the series state between the light-emitting elements in the repeating unit. When switching to the first display mode, the light-emitting elements in the corresponding repeating unit are connected in series by turning on the control switch, and multiple rows of pixel units can be simultaneously illuminated by only driving specific scan lines row by row, without driving all scan lines, thereby reducing the useless work of some scan lines and saving power consumption. Secondly, when switching to the second display mode, the light-emitting elements in the corresponding repeating unit are disconnected by turning off the control switch, and all scan lines are driven row by row so that the first pixel unit and the second pixel unit do not emit light at the same time, so that two display modes are realized without making too much improvement to the driving hardware, which can save costs.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel, a display device, and a method for driving the display panel. Background Art

[0002] The display industry is pursuing higher and higher refresh rates. There is a technology that uses low refresh rate to drive high refresh rate on long-brightness screens, called Dual Line Gate (DLG). The principle is to change the original progressive scanning method to interlaced scanning, that is, scanning two rows of pixel units at a time, and copying the data of the two adjacent rows of pixel units, thereby doubling the refresh rate. For example, for a 4K resolution TV, the original refresh rate is 60Hz. After using DLG technology, the refresh rate can be increased to 120Hz.

[0003] However, in the interlaced scanning method, the number of scan lines driven is not reduced, and there is a problem of high power consumption. Summary of the invention

[0004] The main technical problem solved by the present application is to provide a display panel, a display device and a driving method of the display panel, so as to solve the problem of high power consumption of the display panel in the prior art.

[0005] In order to solve the above technical problems, the first technical solution provided by the present application is: to provide a display panel, which includes a plurality of repeating units and a plurality of rows of scanning lines arranged in an array:

[0006] Each repeating unit consists of:

[0007] A plurality of pixel units are located in the same column and in different rows; each pixel unit includes a light-emitting element and a driving transistor arranged in series; it is defined that in the current direction, a pixel unit in which the light-emitting element and the driving transistor are arranged in series in sequence is a first pixel unit, and a pixel unit in which the driving transistor and the light-emitting element are arranged in series in sequence is a second pixel unit;

[0008] A control switch, used to control the series connection or disconnection between the light-emitting elements in the repeating unit where the control switch is located, and the control switch and the driving transistor are turned on alternately;

[0009] Multiple rows of scan lines are arranged and coupled to multiple rows of pixel units in a one-to-one correspondence; when the light-emitting elements in the repeating unit are connected in series, the scan line corresponding to the pixel unit where the first light-emitting element in the current direction is located is defined as a specific scan line; the specific scan line is arranged corresponding to the first pixel unit;

[0010] The display panel has a first display mode and a second display mode.

[0011] When switching to the first display mode, specific scan lines are driven row by row, and the control switches in the corresponding row of repeating units are turned on, so that multiple pixel units in the corresponding repeating units emit light simultaneously;

[0012] When switching to the second display mode, the scan lines are driven row by row, and the control switches in the corresponding row of repetitive units are turned off, so that the corresponding row of pixel units emit light.

[0013] Wherein, the display panel further includes a plurality of data lines, and the data lines are arranged in one-to-one correspondence with each column of the repeating units;

[0014] In the first pixel unit, the anode of the light emitting element is electrically connected to the corresponding scanning line, the cathode of the light emitting element is electrically connected to the first end of the driving transistor, the second end of the driving transistor is electrically connected to the corresponding data line, and the control end of the driving transistor is used to receive a first control signal and control the turning on and off of the driving transistor according to the first control signal;

[0015] In the second pixel unit, a first end of the driving transistor is electrically connected to the corresponding scanning line, a second end of the driving transistor is electrically connected to the anode of the light emitting element, a cathode of the light emitting element is electrically connected to the corresponding data line, and a control end of the driving transistor is used to receive a second control signal and control the turning on and off of the driving transistor according to the second control signal;

[0016] When the conductivity types of the driving transistors are the same, the phases of the first control signal and the second control signal are the same; when the conductivity types of the driving transistors in the first pixel unit and the driving transistors in the second pixel unit are opposite, the phases of the first control signal and the second control signal are opposite.

[0017] Among them, the display panel also includes a first control signal line and a second control signal line, the phase of the first control signal line and the second control signal line are opposite; the control switch includes a switching transistor, and the switching transistor has the same conductivity type as the driving transistor; the first control signal line is used to control the opening and closing of the driving transistor, and the second control signal line is used to control the opening and closing of the control switch.

[0018] In each repeating unit, there are one first pixel unit, one second pixel unit and one control switch; the control switch is connected between the light-emitting element of the first pixel unit and the light-emitting element of the second pixel unit.

[0019] Among them, the first end of the control switch is electrically connected to the cathode of the light-emitting element in the first pixel unit, the second end of the control switch is electrically connected to the anode of the light-emitting element in the second pixel unit, and the control end of the control switch is used to receive a control signal and control the opening and closing of the control switch according to the control signal.

[0020] Wherein, in each repeating unit, there are multiple first pixel units and control switches, and there is one second pixel unit; in each repeating unit, the second pixel unit is arranged adjacent to one of the multiple first pixel units;

[0021] The control switch includes a first control switch and a second control switch. The first control switch is connected between the light emitting elements of two adjacent first pixel units; the second control switch is connected between the light emitting element of the second pixel unit and the light emitting element of the adjacent first pixel unit.

[0022] in,

[0023] A first end of the first control switch is electrically connected to a cathode of a light-emitting element in a second pixel unit; a second end of the first control switch is electrically connected to an anode of a light-emitting element in another adjacent second pixel unit, and a control end of the first control switch is used to receive a control signal and control the opening and closing of the first control switch according to the control signal;

[0024] The second end of the second control switch is electrically connected to the anode of the light-emitting element in the second pixel unit, the first end of the second control switch is electrically connected to the cathode of the light-emitting element in the adjacent first pixel unit, and the control end of the second control switch is used to receive a control signal and control the opening and closing of the second control switch according to the control signal.

[0025] in,

[0026] When switching to the first display mode, the working timing of the current specific scan line lags behind the working timing of the previous specific scan line, and the lag time is greater than the pulse width of the specific scan line;

[0027] When switching to the second display mode, the working timing of the current row of scan lines lags behind the working timing of the previous row of scan lines, and the lag time is greater than the pulse width of the scan line.

[0028] In order to solve the above technical problem, the second technical solution provided in the present application is: to provide a display device, which includes a mainboard and the above display panel.

[0029] In order to solve the above technical problems, the third technical solution provided by the present application is: to provide a method for driving a display panel, which is used to drive the above display panel, and includes:

[0030] When switching to the first display mode, specific scan lines are driven row by row, and the control switches in the corresponding row of repeating units are turned on, so that multiple pixel units in the corresponding repeating units emit light simultaneously;

[0031] When switching to the second display mode, the scan lines are driven row by row, and the control switches in the corresponding row of repetitive units are turned off, so that the corresponding row of pixel units emit light.

[0032] Beneficial effects of the present application: Different from the prior art, the present application provides a display panel, a display device and a driving method for a display panel, wherein the display panel includes a plurality of repeating units and a plurality of rows of scan lines arranged in an array. Each repeating unit includes a plurality of pixel units and a control switch, and the plurality of pixel units are located in the same column and in different rows. Each pixel unit includes a light-emitting element and a driving transistor arranged in series. It is defined that in the current direction, a pixel unit in which a light-emitting element and a driving transistor are arranged in series in sequence is a first pixel unit, and a pixel unit in which a driving transistor and a light-emitting element are arranged in series in sequence is a second pixel unit. The control switch is used to control the series connection or disconnection between the light-emitting elements in the repeating unit where the control switch is located, and the control switch and the driving transistor are turned on alternately. The plurality of rows of scan lines are arranged and coupled to the plurality of rows of pixel units in a one-to-one correspondence. When the light-emitting elements in the repeating unit are connected in series, the scan line corresponding to the pixel unit in which the first light-emitting element in the current direction is located is defined as a specific scan line. The specific scan line is arranged corresponding to the first pixel unit. The display panel has a first display mode and a second display mode. When switching to the first display mode, a specific scan line is driven row by row, and the control switch in the corresponding row of repeating units is turned on, so that multiple pixel units in the corresponding repeating units emit light at the same time. When switching to the second display mode, the scan lines are driven row by row, and the control switch in the corresponding row of repeating units is turned off, so that the corresponding row of pixel units emit light. A control switch is set in the repeating unit to control the series state between the light-emitting elements in the repeating unit. When switching to the first display mode, the light-emitting elements in the corresponding repeating unit are connected in series by turning on the control switch, and the multiple rows of pixel units can be simultaneously illuminated by only driving the specific scan lines row by row, without driving all the scan lines, thereby reducing the useless work of some scan lines and saving power consumption. Secondly, when switching to the second display mode, the light-emitting elements in the corresponding repeating unit are disconnected by turning off the control switch, and all the scan lines are driven row by row so that the first pixel unit and the second pixel unit do not emit light at the same time, so that two display modes are realized without making too much improvement to the driving hardware, which can save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technical workers in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 It is a structural schematic diagram of a display panel in the prior art;

[0035] Figure 2is a timing diagram of a scan line in the prior art;

[0036] Figure 3 is a schematic structural diagram of a first embodiment of a display panel provided by the present application;

[0037] Figure 4 is a schematic structural diagram of a second embodiment of a display panel provided by the present application;

[0038] Figure 5 yes Figure 3 A timing diagram of the display panel in the first display mode;

[0039] Figure 6 is a schematic structural diagram of a third embodiment of a display panel provided by the present application;

[0040] Figure 7 yes Figure 6 A timing diagram of the display panel in the first display mode;

[0041] Figure 8 is a structural schematic diagram of an embodiment of a display device provided by the present application;

[0042] Fig. 9 It is a flow chart of an implementation of a method for driving a display panel provided in the present application.

[0043] Description of Figure Numbers:

[0044] 100, display panel; 10, repeating unit; 11, pixel unit; 11A, first pixel unit; 11B, second pixel unit; 12, control switch; 121, first control switch; 122, second control switch; T2, switching transistor; LED, light emitting element; T1, driving transistor; G2n+1 / G2n+2 / G2n+3 / G2n+4 / Gate, scanning line; Gate1, first scanning line; Gate2, second scanning line; Sn / Sn+1 / Sn+2 / S, data line; X1, first control signal line; X2, second control signal line A1, first extension line; A2, second extension line; 101, display area; 102, frame area; OE, enable signal; R, routing resistance; I, current; 200, mainboard; 300, display device. DETAILED DESCRIPTION

[0045] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0046] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technical workers in the field without making creative work are within the scope of protection of this application.

[0048] The terms "first", "second" and "third" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0049] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] See also Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the structure of a display panel in the prior art, Figure 2 It is a timing diagram of the scan line in the prior art.

[0051] In the prior art, such as Figure 1As shown in the figure, G2n+1, G2n+2, G2n+3, and G2n+4 represent scan lines with different numbers of rows, Sn, Sn+1, and Sn+2 represent data lines with different numbers of columns, and the anode of the LED is connected to the scan line, and the cathode is connected to the data line. When the potential of the scan line is controlled to be high and the potential of the data line is low, the LED emits light, and the brightness is adjusted by controlling the light-emitting time of the LED. The gray scale is formed by the integral of the brightness within one frame time.

[0052] However, based on this structure, DLG technology is used to change the original progressive scanning mode to interlaced scanning mode, that is, two rows of LEDs are scanned at a time, and the data of the two adjacent rows of LEDs are copied, thereby doubling the refresh rate. This interlaced scanning method does not reduce the number of scan line drives and has the problem of high power consumption.

[0053] See also Figures 1 to 5 , Figure 3 is a schematic structural diagram of a first embodiment of a display panel provided in the present application, Figure 4 is a schematic structural diagram of a second embodiment of a display panel provided by the present application, Figure 5 yes Figure 3 0 is a timing diagram of the display panel in the first display mode.

[0054] In order to solve the above technical problems, the present application provides a display panel 100. The display panel 100 includes a plurality of repeating units 10 arranged in an array and a plurality of rows of scan lines Gate.

[0055] Each repeating unit 10 includes a plurality of pixel units 11 and a control switch 12. The plurality of pixel units 11 are located in the same column and in different rows. Each pixel unit 11 includes a light-emitting element LED and a driving transistor T1 arranged in series. It is defined that in the current direction, the pixel unit 11 in which the light-emitting element LED and the driving transistor T1 are arranged in series in sequence is a first pixel unit 11A, and the pixel unit 11 in which the driving transistor T1 and the light-emitting element LED are arranged in series in sequence is a second pixel unit 11B. The control switch 12 is used to control the series connection or disconnection between the light-emitting elements LED in the repeating unit 10 where the control switch 12 is located, and the control switch 12 and the driving transistor T1 are turned on alternately. Multiple rows of scanning lines Gate are arranged in a one-to-one correspondence with multiple rows of pixel units 11. When the light-emitting elements LED in the repeating unit 10 are connected in series, the scanning line Gate corresponding to the pixel unit 11 where the first light-emitting element LED is located in the current direction is defined as a specific scanning line Gate. The specific scanning line Gate is arranged corresponding to the first pixel unit 11A.

[0056] The display panel 100 has a first display mode and a second display mode. When switching to the first display mode, the specific scan line Gate is driven row by row, and the control switch 12 in the corresponding row of repeating units 10 is turned on, so that the multiple pixel units 11 in the corresponding repeating unit 10 emit light simultaneously. When switching to the second display mode, the scan line Gate is driven row by row, and the control switch 12 in the corresponding row of repeating units 10 is turned off, so that the corresponding row of pixel units 11 emit light.

[0057] By setting a control switch 12 in the repeating unit 10, the series connection state between the light-emitting elements LED in the repeating unit 10 is controlled; when switching to the first display mode, the control switch 12 is turned on to connect the light-emitting elements LED in the corresponding repeating unit 10 in series, and only specific scan lines are driven row by row to achieve simultaneous light emission of multiple rows of pixel units, without driving all the scan line Gates, thereby reducing the useless work of some scan line Gates and saving power consumption. Secondly, when switching to the second display mode, the control switch 12 is turned off to disconnect the light-emitting elements LED in the corresponding repeating unit 10, and all the scan line Gates are driven row by row to make the first pixel unit 11A and the second pixel unit 11B non-simultaneous light emission, so that two display modes are achieved without making too much improvement to the driving hardware, which can save costs.

[0058] The arrangement of the first pixel unit 11A and the second pixel unit 11B in each repeating unit 10 is the same.

[0059] A plurality of repeating units 10 are arranged in an array, and a plurality of pixel units 11 in each repeating unit 10 are located in the same column and in different rows. It can be understood that the pixel units 11 are also arranged in an array. The row direction of the repeating unit 10 is the row direction of the pixel unit 11, and the column direction of the repeating unit 10 is the column direction of the pixel unit 11.

[0060] Each row of repeating units 10 includes a plurality of rows of pixel units 11. A row of scanning lines Gate is corresponding to a row of pixel units 11.

[0061] It should be understood that in the embodiment of the present application, a row of pixel units 11 includes either only the first pixel units 11A or only the second pixel units 11B. No row of pixel units 11 includes both the first pixel units 11A and the second pixel units 11B.

[0062] Each row of repeating units 10 corresponds to a row of specific scan lines Gate0. In each row of repeating units 10, in the current direction, the pixel unit 11 where the last light-emitting element LED is located is the second pixel unit 11B, so as to ensure that when switching to the first display mode, the current can flow from the specific scan line Gate0 through the light-emitting elements LED in the first pixel unit 11A and the light-emitting elements LED in the second pixel unit 11B in sequence, so as to ensure that the multiple light-emitting elements LED arranged in series can emit light normally.

[0063] The light emitting element LED is a light emitting diode (Light Emitting Diode). The light emitting diode can be a sub-millimeter light emitting diode (mini LED) or a micron light emitting diode (Micro Light Emitting Diode Display, abbreviated as Micro LED).

[0064] There is no restriction on the structure type of the driving transistor T1, and it can be selected according to actual needs.

[0065] In some embodiments, the display panel 100 further includes a plurality of data lines S, and the data lines S are arranged in one-to-one correspondence with each column of the repeating unit 10. In the first pixel unit 11A, the anode of the light-emitting element LED is electrically connected to the corresponding scan line Gate, the cathode of the light-emitting element LED is electrically connected to the first end of the driving transistor T1, the second end of the driving transistor T1 is electrically connected to the corresponding data line S, and the control end of the driving transistor T1 is used to receive the first control signal and control the turning on and off of the driving transistor T1 according to the first control signal.

[0066] In the second pixel unit 11B, the first end of the driving transistor T1 is electrically connected to the corresponding scan line Gate, the second end of the driving transistor T1 is electrically connected to the anode of the light-emitting element LED, the cathode of the light-emitting element LED is electrically connected to the corresponding data line S, and the control end of the driving transistor T1 is used to receive a second control signal and control the turning on and off of the driving transistor T1 according to the second control signal.

[0067] When the conductive types of the driving transistors T1 are the same, the phases of the first control signal and the second control signal are the same. When the conductive types of the driving transistors T1 in the first pixel unit 11A and the driving transistors T1 in the second pixel unit 11B are opposite, the phases of the first control signal and the second control signal are opposite. This design ensures that the multiple driving transistors T1 in the repeating unit 10 can be turned on or off at the same time.

[0068] It should be understood that when the phases of the first control signal line X1 and the second control signal line X2 are the same, the first control signal and the second control signal can be derived from the same signal source or from different signal sources. There is no limitation here and the selection is made according to actual needs.

[0069] In a specific embodiment, the display panel 100 further includes a first control signal line X1 and a second control signal line X2, and the first control signal line X1 and the second control signal line X2 have opposite phases. The control switch 12 includes a switch transistor T2, and the switch transistor T2 has the same conductivity type as the driving transistor T1. The first control signal line X1 is used to control the on and off of the driving transistor T1, and the second control signal line X2 is used to control the on and off of the control switch 12.

[0070] Specifically, the control terminals of the control switch 12 are electrically connected to the second control signal line X2. The control terminals of the driving transistor T1 are electrically connected to the first control signal line X1.

[0071] The first control signal line X1 and the second control signal line X2 each include a plurality of first extension lines A1 electrically connected to each other and a second extension line A2, and the plurality of first extension lines A1 are electrically connected to the second extension line A2 so as to access the control signal through the second extension line A2. The first extension line A1 is extended along the row direction of the repeating unit 10, and the second extension line A2 is extended along the column direction of the repeating unit 10. In the first control signal line X1, the first extension line A1 is coupled to the driving transistor T1 in the pixel unit 11, and the second extension line A2 is electrically connected to the driving transistor T1 through the first extension line A1. In the second control signal line X2, the first extension line A1 is coupled to the control switch 12 in the pixel unit 11, and the second extension line A2 is electrically connected to the control switch 12 through the first extension line A1. This routing connection method can simplify the connection method of the first control signal line X1 and the connection method of the second control signal line X2, and avoid the first control signal line X1 and the second control signal line X2 occupying too much space, which affects the connection of the circuit in the pixel unit 11.

[0072] It should be understood that in other embodiments, the first control signal line X1 and the second control signal may have the same phase, and the switch transistor T2 and the drive transistor T1 have opposite conductivity types, so that the drive transistor T1 and the control switch 12 may be turned on alternately.

[0073] In the embodiment of the present application, the control switch 12 and the driving transistor T1 are alternately turned on, which can be understood as, when the control switch 12 is turned on, the driving transistor T1 is turned off; when the control switch 12 is turned off, the driving transistor T1 is turned on.

[0074] In some embodiments, the display panel 100 includes a display area 101 and a frame area 102 located on the side of the display area 101 , the first extension line A1 is located in the display area 101 , and the second extension line A2 can be located in the display area 101 or in the frame area 102 .

[0075] In this embodiment, the second extension line A2 is located in the border area 102 as an example for description.

[0076] In some embodiments, in each repeating unit 10, there is one first pixel unit 11A, one second pixel unit 11B and one control switch 12. The control switch 12 is connected between the light emitting element LED of the first pixel unit 11A and the light emitting element LED of the second pixel unit 11B.

[0077] Specifically, the first end of the control switch 12 is electrically connected to the cathode of the light-emitting element LED in the first pixel unit 11A, and the second end of the control switch 12 is electrically connected to the anode of the light-emitting element LED in the second pixel unit 11B. The control end of the control switch 12 is used to receive a control signal and control the opening and closing of the control switch 12 according to the control signal.

[0078] In some embodiments, the control switch 12 is an N-type transistor. In other embodiments, the control switch 12 can be a P-type transistor.

[0079] There is no restriction on the conductivity type of the control switch 12 and the structure type of the transistor, and they are selected according to actual needs.

[0080] In a specific embodiment, each repeating unit 10 includes a row of adjacent first pixel units 11A and a row of adjacent second pixel units 11B. In each repeating unit 10, the first pixel units 11A and the second pixel units 11B are sequentially arranged in the column direction of the repeating unit 10. That is, the first pixel units 11A and the second pixel units 11B are sequentially alternately arranged in the column direction of the repeating unit 10.

[0081] In other embodiments, the arrangement order of the first pixel unit 11A and the second pixel unit 11B in the column direction of the repeating unit 10 can be interchanged (see Figure 4 ).

[0082] The scan line Gate coupled to the first pixel unit 11A is defined as the first scan line Gate1 , and the scan line Gate coupled to the second pixel unit 11B is defined as the second scan line Gate2 .

[0083] In the embodiment of the present application, the refresh rate of the first display mode is greater than the refresh rate of the second display mode.

[0084] In some embodiments, when switching to the first display mode, the operation timing of the current row of specific scan lines T0 lags behind the operation timing of the previous row of specific scan lines T0 , and the lag time is greater than the pulse width of the specific scan line T0 .

[0085] When switching to the second display mode, the working timing of the current row of scan lines Gate lags behind the working timing of the previous row of scan lines Gate, and the lag time is greater than the pulse width of the scan line Gate.

[0086] In a specific embodiment, if Figure 5 As shown, when switching to the first display mode, the first control signal line X1 is at a low potential, the second control signal line X2 is at a high potential, the driving transistor T1 is turned off, the control switch 12 is turned on, and the light-emitting elements LED in the repeating unit 10 are connected in series. The specific scan line Gate0 is driven row by row, and the first pixel unit 11A and the second pixel unit 11B in the corresponding row of repeating units 10 emit light at the same time, which is equivalent to driving two adjacent rows of pixel units 11 to emit light at the same time. In this embodiment, the first scan line Gate1 corresponding to each row of repeating units 10 is a row of specific scan lines Gate0. The second scan line Gate2 has a potential of 0 and does not need to do work.

[0087] When switching to the second display mode, the first control signal line X1 is at a high potential, the second control signal is at a low potential, the driving transistor T1 is turned on, the control switch 12 is turned off, and the light-emitting elements LED in the repeating unit 10 are disconnected. The scanning line Gate is driven row by row, and the first pixel unit 11A or the second pixel unit 11B in the corresponding row of the repeating unit 10 emits light, that is, the pixel unit 11 corresponding to the current row of the scanning line Gate emits light.

[0088] Specifically, the enable signal of the scan line Gate is represented by OE. At T1, Gn is at a high potential, and at T2, the light-emitting element LED connected to Gn starts to emit light. The light-emitting element LED ends at T3. At T4, Gn is at a low potential, and the Gn row is turned off. At T5, Gn+1 is at a high potential, and at T6, the light-emitting element LED connected to Gn+1 starts to emit light. The positions of T2 and T6 are periodically constant, and the positions of T1 and T4 are also periodically constant. The time difference between T2 and T1 is equal to the time difference between T6 and T5. The light-emitting element LED ends at T7. In fact, the positions of T3 and T7 determine the light-emitting time. Finally, the grayscale is formed by the brightness integration within a frame time.

[0089] It should be noted that when switching to the first display mode, the driving voltage of the specific scan line Gate0 is increased to ensure that the current I flowing through the light-emitting element LED in the pixel unit 11 that emits light in the two display modes is the same, so as to ensure that the same grayscale brightness of the pixel unit 11 in the same position is the same in the first display mode and the second display mode.

[0090] It should be understood that, assuming that the wiring resistance R on each scan line Gate is the same and is R, when the scan line Gate is driven, the current I flowing through each scan line Gate is the same and is I, then the power wasted on each scan line Gate due to the wiring resistance R is I²R. When the total number of scan lines Gate remains unchanged (assuming that the first scan line Gate1 is m and the second scan line Gate2 is n), when switching to the first display mode, only the first scan line Gate1 is driven, and the current I on the second scan line Gate2 can be regarded as 0, then the total power wasted by the scan line Gate due to the wiring resistance R is m times I²R; when switching to the second display mode, the scan line Gate is driven row by row, and the total power wasted by the scan line Gate due to the wiring resistance R is (m+n) times I²R. In other words, compared with the second display mode, the first display mode reduces the power wasted by the second scan line Gate2 due to the wiring resistance R, and the work done by the wiring resistance R is useless work, that is. In the first display mode, useless work can be reduced and power consumption can be saved.

[0091] However, the existing DLG technology does not reduce the number of scan line Gate drives. That is to say, compared with the existing DLG technology, when the display panel 100 of the embodiment of the present application switches to the first display mode, the number of scan line Gate drives is reduced, which can reduce useless work and save power consumption. That is, the display panel 100 of the embodiment of the present application can reduce useless work and save power consumption when it has two display modes.

[0092] Secondly, although the first control signal line X1 and the second control signal line X2 are added in this embodiment, there is no high-frequency switching, and energy is only consumed instantaneously when switching the display mode, which can be ignored. At the same time, the scanning line Gate is used to transmit the driving signal to the pixel unit 11, and the proportion of power wasted by its wiring resistance R is higher than that of other wirings. Reducing the number of driving the scanning line Gate can greatly reduce useless work, thereby reducing the temperature of the display panel 100 and reducing the heat dissipation cost.

[0093] See also Figure 3 , Figure 4 , Figure 6 and Figure 7 , Figure 6 is a schematic structural diagram of a third embodiment of a display panel provided in the present application, Figure 7 yes Figure 6 0 is a timing diagram of the display panel in the first display mode.

[0094] The third embodiment of the display panel 100 provided in the present application is substantially similar in structure to the first embodiment of the display panel 100 provided in the present application, except that: there are multiple first pixel units 11A.

[0095] In some embodiments, in each repeating unit 10, there are multiple first pixel units 11A and multiple control switches 12, and there is one second pixel unit 11B. In each repeating unit 10, the second pixel unit 11B is disposed adjacent to one of the multiple first pixel units 11A.

[0096] The control switch 12 includes a first control switch 121 and a second control switch 122. The first control switch 121 is connected between the light emitting elements LED of two adjacent first pixel units 11A. The second control switch 122 is connected between the light emitting element LED of the second pixel unit 11B and the light emitting element LED of the adjacent first pixel unit 11A.

[0097] That is, in each repeating unit 10, the second pixel unit 11B is not located between two adjacent first pixel units 11A, but is located at the beginning or end of a plurality of first pixel units 11A arranged in a row, so that the second pixel unit 11B is only arranged adjacent to one of the plurality of first pixel units 11A.

[0098] It should be understood that each row of repeating units 10 includes multiple rows of first pixel units 11A and one row of second pixel units 11B, that is, each row of repeating units 10 corresponds to multiple rows of first scanning lines Gate1 and one row of second scanning line Gate2.

[0099] In each repeating unit 10, a control switch 12 is disposed between every two adjacent pixel units 11, and a first control switch 121 is disposed between every two adjacent first pixel units 11A. Both the first control switch 121 and the second control switch include a switch transistor T2.

[0100] In a specific embodiment, a first end of the first control switch 121 is electrically connected to a cathode of a light-emitting element LED in a second pixel unit 11B. A second end of the first control switch 121 is electrically connected to an anode of a light-emitting element LED in another adjacent second pixel unit 11B. The control end of the first control switch 121 is used to receive a control signal and control the on and off of the first control switch 121 according to the control signal.

[0101] The second end of the second control switch 122 is electrically connected to the anode of the light-emitting element LED in the second pixel unit 11B, and the first end of the second control switch 122 is electrically connected to the cathode of the light-emitting element LED in the adjacent first pixel unit 11A. The control end of the second control switch 122 is used to receive a control signal and control the opening and closing of the second control switch 122 according to the control signal.

[0102] In this embodiment, the control end of the first control switch 121 and the control end of the second control switch 122 are both electrically connected to the second control signal line X2.

[0103] In this embodiment, an example is taken in which each repeating unit 10 includes two first pixel units 11A.

[0104] In a specific embodiment, when switching to the first display mode, the first control signal line X1 is at a low potential, the second control signal line X2 is at a high potential, the driving transistor T1 is turned off, the control switches 12 are all turned on, and the light-emitting elements LED in the repeating unit 10 are connected in series. The specific scanning line Gate0 is driven row by row, and the first pixel unit 11A and the second pixel unit 11B in the corresponding row repeating unit 10 emit light at the same time, which is equivalent to driving the three adjacent rows of pixel units 11 to emit light at the same time.

[0105] In this embodiment, only part of the first scan line Gate1 is driven. That is, compared with the first embodiment of the display panel 100 provided in this application, the number of driven scan lines Gate can be further reduced to save power consumption to a greater extent, and the refresh rate of the first display mode can be further improved.

[0106] See also Figure 8 , Figure 8 It is a structural schematic diagram of an embodiment of a display device provided in the present application.

[0107] The present application provides a display device 300. The display device 300 includes a mainboard 200 and the above-mentioned display panel 100. The mainboard 200 is electrically connected to the display panel 100, and the mainboard 200 is used to transmit various required signals to the display panel 100 to control the display panel 100 to display a picture, for example, a clock signal (CK), a common voltage signal (VSS), and a power supply voltage signal (VDD).

[0108] See also Fig. 9 , Fig. 9 It is a flow chart of an implementation of a method for driving a display panel provided in the present application.

[0109] The present application provides a display panel driving method for driving the above-mentioned display panel.

[0110] The specific steps of the display panel driving method are as follows:

[0111] S10: When switching to the first display mode, specific scan lines are driven row by row, and control switches in the corresponding row of repeating units are turned on, so that a plurality of pixel units in the corresponding repeating units emit light simultaneously.

[0112] When switching to the first display mode, specific scan lines are driven row by row, and the control switch in the corresponding row of repetitive units is turned on and the driving transistor is turned off, so that the first pixel unit and the second pixel unit in the corresponding repetitive unit emit light at the same time, that is, multiple rows of pixel units are driven at the same time to increase the refresh rate, so that the refresh rate of the first display mode is higher than the refresh rate of the second display mode.

[0113] S20: When switching to the second display mode, the scan lines are driven row by row, and the control switches in the corresponding row of repetitive units are turned off, so that the corresponding row of pixel units emit light.

[0114] When switching to the second display mode, all the scan lines are driven row by row in sequence, and the control switches in the corresponding row of repeating units are turned off, so that the pixel units coupled to the corresponding row of scan lines emit light.

[0115] The structure of the display panel is not restricted here, and reference is made to the above description.

[0116] It should be noted that, in this embodiment, step S10 and step S20 are performed in no particular order.

[0117] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0118] The above are only implementation methods of the present application, and are not intended to limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, characterized in that: Including multiple repeating units and multiple scan lines arranged in an array: Each of the repeating units comprises: A plurality of pixel units are located in the same column and in different rows; each of the pixel units comprises a light-emitting element and a driving transistor arranged in series; it is defined that in the current direction, a pixel unit in which the light-emitting element and the driving transistor are arranged in series in sequence is a first pixel unit, and a pixel unit in which the driving transistor and the light-emitting element are arranged in series in sequence is a second pixel unit; A control switch, used to control the series connection or disconnection between the light-emitting elements in the repeating unit where the control switch is located, and the control switch and the driving transistor are turned on alternately; A plurality of rows of scan lines are arranged and coupled to a plurality of rows of pixel units in a one-to-one correspondence; when the light-emitting elements in the repeating unit are connected in series, a scan line corresponding to a pixel unit where the first light-emitting element in the current direction is located is defined as a specific scan line; and the specific scan line is arranged corresponding to the first pixel unit; The display panel has a first display mode and a second display mode. When switching to the first display mode, the specific scan lines are driven row by row, and the control switches in the corresponding rows of the repeating units are turned on, so that the plurality of pixel units in the corresponding repeating units emit light simultaneously; When switching to the second display mode, the scan lines are driven row by row, and the control switches in the repetitive units in the corresponding rows are turned off, so that the pixel units in the corresponding rows emit light.

2. The display panel according to claim 1, characterized in that: The display panel further comprises a plurality of data lines, and the data lines are arranged in one-to-one correspondence with each column of the repeating units; In the first pixel unit, the anode of the light-emitting element is electrically connected to the corresponding scan line, the cathode of the light-emitting element is electrically connected to the first end of the driving transistor, the second end of the driving transistor is electrically connected to the corresponding data line, and the control end of the driving transistor is used to receive a first control signal and control the turning on and off of the driving transistor according to the first control signal; In the second pixel unit, the first end of the driving transistor is electrically connected to the corresponding scanning line, the second end of the driving transistor is electrically connected to the anode of the light emitting element, the cathode of the light emitting element is electrically connected to the corresponding data line, and the control end of the driving transistor is used to receive a second control signal and control the turning on and off of the driving transistor according to the second control signal; When the conductivity types of the driving transistors are the same, the first control signal and the second control signal have the same phase; when the conductivity types of the driving transistors in the first pixel unit and the driving transistors in the second pixel unit are opposite, the first control signal and the second control signal have opposite phases.

3. The display panel according to claim 2, characterized in that: The display panel further comprises a first control signal line and a second control signal line, wherein the first control signal line and the second control signal line have opposite phases; the control switch comprises a switch transistor, wherein the switch transistor has the same conductivity type as the drive transistor; The first control signal line is used to control the on and off of the driving transistor, and the second control signal line is used to control the on and off of the control switch.

4. The display panel according to claim 1, characterized in that: In each of the repeating units, there is one first pixel unit, one second pixel unit and one control switch; the control switch is connected between the light-emitting element of the first pixel unit and the light-emitting element of the second pixel unit.

5. The display panel according to claim 4, characterized in that: The first end of the control switch is electrically connected to the cathode of the light-emitting element in the first pixel unit, and the second end of the control switch is electrically connected to the anode of the light-emitting element in the second pixel unit. The control end of the control switch is used to receive a control signal and control the opening and closing of the control switch according to the control signal.

6. The display panel according to claim 4, characterized in that: In each of the repeating units, there are multiple first pixel units and multiple control switches, and there is one second pixel unit; in each of the repeating units, the second pixel unit is arranged adjacent to one of the multiple first pixel units; The control switch includes a first control switch and a second control switch, wherein the first control switch is connected between the light emitting elements of two adjacent first pixel units; and the second control switch is connected between the light emitting element of the second pixel unit and the light emitting element of the adjacent first pixel unit.

7. The display panel according to claim 6, characterized in that: The first end of the first control switch is electrically connected to the cathode of the light-emitting element in one of the second pixel units; the second end of the first control switch is electrically connected to the anode of the light-emitting element in another adjacent second pixel unit, and the control end of the first control switch is used to receive a control signal and control the opening and closing of the first control switch according to the control signal; The second end of the second control switch is electrically connected to the anode of the light-emitting element in the second pixel unit, the first end of the second control switch is electrically connected to the cathode of the light-emitting element in the adjacent first pixel unit, and the control end of the second control switch is used to receive the control signal and control the opening and closing of the second control switch according to the control signal.

8. The display panel according to claim 2, characterized in that: When switching to the first display mode, the working timing of the specific scan line in the current row lags behind the working timing of the specific scan line in the previous row, and the lag time is greater than the pulse width of the specific scan line; When switching to the second display mode, the working timing of the scan line in the current row lags behind the working timing of the scan line in the previous row, and the lag time is greater than the pulse width of the scan line.

9. A display device, characterized in that: The invention comprises a main board and the display panel according to any one of claims 1 to 8.

10. A method for driving a display panel, for driving the display panel according to any one of claims 1 to 8, characterized in that: include: When switching to the first display mode, specific scan lines are driven row by row, and the control switches in the corresponding row of repeating units are turned on, so that the multiple pixel units in the corresponding repeating units emit light simultaneously; When switching to the second display mode, the scan lines are driven row by row, and the control switches in the repeating units in the corresponding rows are turned off, so that the pixel units in the corresponding rows emit light.

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