Display screen and control method thereof

Abstract

The invention discloses a display screen and a control method thereof, and relates to the technical field of display devices.The display screen comprises a display panel, each column of display pixels in the display panel correspond to one data driving line, and each data driving line is connected with a first switch; the at least two data driving lines correspond to a first connecting point of the controller, and the first connecting point is used for providing driving voltage of data to be displayed; wherein at least two data driving lines corresponding to each first connection point form a data driving line group, at least one data driving line in the data driving line group is a target line, the target line is connected with a second switch, the second switch is in a conduction state to provide initial voltage for the target line, and the initial voltage is not equal to zero.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and more specifically, to a display screen and a control method thereof. Background Art

[0002] With the continuous development of science and technology, more and more electronic devices with display functions are widely used in people's daily life and work, bringing great convenience to people's daily life and work, and becoming an indispensable and important tool for people today.

[0003] The main structure of an electronic device to realize the display function is a display screen. The display panel in the display screen includes display pixels for image display. In the display screen, a column of display pixels can be connected to the same data drive line, and the data drive line can provide a driving voltage for the display pixels in each row of display pixels according to the scanning timing of each row of display pixels, so that the display pixels can emit light and display.

[0004] In conventional display screens, when the data drive line charges the display pixels to provide the drive voltage for the data to be displayed, a long charging time is required, which affects the improvement of the refresh frequency of the display screen and is not convenient for the display screen to achieve high refresh frequency image display. Summary of the invention

[0005] In view of this, the present application provides a display screen and a control method thereof, the scheme is as follows:

[0006] A first aspect of the present application provides a display screen, comprising:

[0007] A display panel, wherein each column of display pixels in the display panel corresponds to a data drive line, and each data drive line is connected to a first switch;

[0008] A controller, wherein at least two data drive lines correspond to a first connection point of the controller, and the first connection point is used to provide a drive voltage for data to be displayed;

[0009] Among them, at least two data drive lines corresponding to each first connection point form a data drive line group, at least one data drive line in the data drive line group is a target line, the target line is connected to a second switch, and the second switch is in an on state to provide an initial voltage for the target line, and the initial voltage is not equal to zero.

[0010] Optionally, in the above display screen, an input end of the second switch is connected to a second connection point of the controller, and the second connection point is used to provide an initial voltage.

[0011] Optionally, in the above display screen, the initial voltage is a fixed voltage, and the fixed voltage satisfies a matching condition with a target voltage; and the target voltage is half of a difference between a maximum driving voltage and a minimum driving voltage.

[0012] Optionally, in the above display screen, the initial voltage is smaller than a driving voltage of the target line for displaying data.

[0013] Optionally, in the above display screen, the target line obtains an initial voltage prior to a driving voltage of data to be displayed.

[0014] Optionally, in the above display screen, the second switch control signal of the target line and the first switch control signal of the non-target line belong to the same control signal;

[0015] The second switch control signal of the target line and the first switch control signal of the non-target line are from the same control signal line.

[0016] Optionally, in the above display screen, the control timing of the first switch of the non-target line is earlier than the control timing of the first switch of the target line.

[0017] Optionally, in the above-mentioned display screen, in a scanning cycle of a row of display pixels, if the difference between the driving voltage of the target line and the driving voltage of the previous row is greater than a set threshold, the second switch is turned on before the first switch of the target line is turned on; if the difference is not greater than the set threshold, the second switch is continuously closed during the scanning cycle.

[0018] A second aspect of the present application provides a method for controlling a display screen, the method comprising:

[0019] Turning on the second switch of the data driving line to charge the display pixel connected to the data driving line;

[0020] Turning on the first switch of the data driving line to continue charging the display pixels connected to the data driving line;

[0021] The timing of turning on the second switch of the data driving line is earlier than that of turning on the first switch of the data driving line. By turning on the second switch, the initial voltage obtained by the data driving line is not equal to zero.

[0022] Optionally, in the above control method, the data drive line connected to the second switch is the target line. In a scanning cycle of a row of display pixels, if the difference between the drive voltage of the target line and the drive voltage of the previous row is greater than a set threshold, the second switch is turned on before the first switch of the target line is turned on; if the difference is not greater than the set threshold, the second switch is continuously closed during the scanning cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0025] Figure 1 A structural schematic diagram of a display screen;

[0026] Figure 2 for Figure 1 The charging timing diagram of the display screen shown;

[0027] Figure 3 A schematic diagram of the structure of a display screen provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the structure of another display screen provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of the structure of another display screen provided in an embodiment of the present application;

[0030] Figure 6 A schematic diagram of the structure of another display screen provided in an embodiment of the present application;

[0031] Figure 7 for Figure 6 The charging timing diagram with the pre-charging process turned off in the display shown;

[0032] Figure 8 for Figure 7 The charging timing diagram of the pre-charging process is shown in the display screen;

[0033] Fig. 9 A flow chart of a control method provided in an embodiment of the present application.

[0034] Reference numerals:

[0035] 100-display panel; 101-display pixel; 102-data drive line; 103-scan line; 104-first control signal line; 105-selection circuit; 106-first switch; 107-pixel transistor; 108-first connection point; 109-controller; 110-second switch; 111-second connection point; 112-second control signal line. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the embodiments in 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 technicians in this field without making creative work are within the scope of protection of this application.

[0037] In conventional display panels, the charging time of the display pixels by the data driving lines is limited, which will affect the improvement of the refresh rate of the display panel.

[0038] refer to Figure 1 , Figure 1 1 is a schematic diagram of the structure of a display screen, wherein the display screen includes: a display panel 100, the display panel 100 includes a display array, the display array includes a plurality of display pixels 101; the display pixels 101 in the same column are connected to the same data drive line 102, and the display pixels 101 in different columns are connected to different data drive lines 102; the display pixels 101 in the same row are connected to the same scan line 103, and the display pixels 101 in different rows are connected to different scan lines 103.

[0039] The display pixel 101 includes three light-emitting elements of three different light-emitting colors, the light-emitting element may be an OLED or a micro LED, the micro LED may be a MINI LED or a Micro LED, and the three light-emitting elements are a red light-emitting element R, a green light-emitting element G, and a blue light-emitting element B.

[0040] The display screen needs to be controlled by a controller (which can be a display driver IC, Figure 1 (not shown) provides a driving voltage for the data driving line 102 to display the data. In order to reduce the number of first connection points in the controller for providing the driving voltage occupied by the data driving line 102, as shown in FIG. Figure 1 As shown, two data drive lines 102 can be set as a data drive line group in the display screen, and the two data drive lines 102 in the same data drive line group are connected to the same first connection point in the controller through the selection circuit 105, and the driving voltage can be provided to the two data drive lines 102 in a time-sharing manner through the same first connection point.

[0041] The gating circuit 105 may be a demultiplexer (Demux for short). The gating circuit 105 includes a plurality of first switches 106 connected to the data drive lines 102 in the data drive line group in a one-to-one correspondence. Two data drive lines 102 in the same data drive line group are connected to the same first connection point through the first switches 106 to which they are connected.

[0042] In the same gating circuit 105, the first switches 106 connected to different data drive lines 102 are respectively connected to different first control signal lines 104, and the first control signal line 104 is used to input the first switch control signal to control the conduction state of the first switch 106. The first switches 106 connected to the first data drive lines 102 in different gating circuits 105 are connected to the same first control signal line 104, and the first control signal input by the first control signal line is Mux 1 The first switches 106 connected to the second data drive lines 102 in different selection circuits 105 are connected to the same first control signal line 104, and the first control signal input to the first control signal line is Mux 2 .

[0043] The display panel 100 may have M rows and N columns of display pixels 101, and the corresponding scanning signals input by the M scanning lines 103 are represented as SC 1 , SC 2 , SC 3 , SC 4 ,…,SC M , the driving voltages inputted by the corresponding N data driving lines 102 are expressed as D 1 , D 2 , D 3 , D 4 ,…,D N . Figure 1 FIG. 1 shows four rows of continuous display pixels 101 and four columns of continuous display pixels 101 in the display panel 100. M and N can be any positive integer greater than 1, and are not limited to Figure 1 M=N=4 as shown.

[0044] The first nodes connected to the respective gating circuits 105 are represented as S 1 , S 2 ,…,S n , n is a positive integer, and N=2n.

[0045] refer to Figure 2 , Figure 2 for Figure 1The charging timing diagram of the display screen shown in FIG. A scanning cycle 1H of the display pixel 101 of the i-th row includes the first period t1 to the fifth period t5. Among them, the scanning signal connected to the scanning line 103 connected to the display pixel 101 of the i-th row is SC i , i is a positive integer not greater than M.

[0046] t1 is Mux 1 The opening time of the period, during which the input Mux 1 Each first switch 106 is turned on, and the input Mux 2 Each first switch 106 is turned off, and the pixel transistor 107 connected to the display pixel 101 of the i-th row and the data drive line 102 is turned off. At this time, the display pixels 101 of each odd column are charged, and the connected data drive line 102 inputs the drive voltage through the corresponding first node.

[0047] t2 is the interval time between t1 and t3.

[0048] t3 is Mux 2 The opening time of the period, during which the input Mux 2 Each first switch 106 is turned on, and the input Mux 1 Each first switch 106 is turned off, and the pixel transistor 107 connected to the display pixel 101 of the i-th row and the data drive line 102 is turned off. At this time, the display pixels 101 of each even column are charged, and the connected data drive line 102 inputs the drive voltage through the corresponding first node.

[0049] t4 is SC i The SC input from the scan line 103 connected to the display pixel 101 in the i-th row is i The row of pixel transistors 107 connected to the scan line 103 is turned on, and the driving voltage charged into the data driving line 102 at t1 and t2 by the display pixels 101 in the row is written into the pixel capacitor connected to the pixel transistor 107 to control the display pixels 101 to display images.

[0050] t5 is a safety interval time between the scanning period of the display pixels 101 in the i-th row and the scanning period of the display pixels 101 in the next row.

[0051] In the display panel, the first switch 106 and the pixel transistor 107 are P-type transistors, which are turned on at a low level, so Mux 1 、Mux 2 , SC i The on-time is low level.

[0052] The refresh frequency of the display screen is equal to or approximately equal to the inverse of the product of the duration of the scanning cycle 1H and the number of scanning lines. If the scanning cycle duration is Th and the number of scanning lines is M lines of the entire display panel 100, the refresh frequency is 1 / (TH*M).

[0053] SC i The duration of the pixel charging of the display pixel 101 in the i-th row is affected, and Mux 1 、Mux 2 The charging of the data driving line 102 is affected. In conventional designs, the turn-on time of these signals has reached a limit value and it is difficult to further reduce it to increase the refresh frequency of the display screen.

[0054] In order to further improve the refresh rate of a display screen, an embodiment of the present application provides a display screen, comprising:

[0055] A display panel, wherein each column of display pixels in the display panel corresponds to a data drive line, and each data drive line is connected to a first switch;

[0056] A controller, wherein at least two data drive lines correspond to a first connection point of the controller, and the first connection point is used to provide a drive voltage for data to be displayed;

[0057] Among them, at least two data drive lines corresponding to each first connection point form a data drive line group, at least one data drive line in the data drive line group is a target line, the target line is connected to a second switch, and the second switch is in an on state to provide an initial voltage for the target line, and the initial voltage is not equal to zero.

[0058] In the embodiment of the present application, by connecting the second switch to the target line, an initial voltage not less than zero can be input to the target line through the second switch, thereby achieving pre-charging of the target line before inputting the driving voltage. When the driving voltage is input to the target line, the charging time of the driving voltage to the target line can be reduced, thereby reducing the scanning cycle and further increasing the refresh frequency of the display screen.

[0059] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0060] refer to Figure 3 , Figure 3 A schematic diagram of the structure of a display screen provided in an embodiment of the present application, wherein the display screen includes:

[0061] A display panel 100, each column of display pixels 101 in the display panel 100 corresponds to a data drive line 102, and each data drive line 102 is connected to a first switch 106;

[0062] A controller 109, at least two data driving lines 102 correspond to a first connection point 108 of the controller 109, and the first connection point 108 is used to provide a driving voltage for data to be displayed; Figure 3 Two first connection points 108 are shown in FIG. 1 , and the two first connection points 108 are S 1 , S 2 .

[0063] Among them, at least two data driving lines 102 corresponding to each first connection point 108 form a data driving line group, at least one data driving line 102 in the data driving line group is a target line, and the target line is connected to a second switch 110. The second switch 110 is in an on state to provide an initial voltage Vd for the target line, and the initial voltage Vd is not equal to zero.

[0064] In the same data driving line group, the first switches 106 connected to the data driving lines 102 form a gating circuit 105 .

[0065] It should be noted that the display pixel 101 includes a plurality of light emitting elements of different light emitting colors. The arrangement of the light emitting elements of different colors in the display panel 100 can be set according to the requirements and is not limited to the arrangement shown in the embodiment of the present application.

[0066] Figure 3 In the illustrated manner, each data driving line group includes two data driving lines 102. The data driving lines 102 in the data driving line group may be 2 or more, and are not limited to the two shown in the illustration of the present application.

[0067] In the embodiment of the present application, by connecting the second switch 110 to the target line, an initial voltage Vd not less than zero can be input to the target line through the second switch 110, thereby achieving pre-charging of the target line before inputting the driving voltage. When the driving voltage is input to the target line, the charging time of the target line to charge the driving voltage can be reduced, thereby reducing the scanning cycle and further increasing the refresh frequency of the display screen.

[0068] refer to Figure 4 , Figure 4 A schematic diagram of the structure of another display screen provided in an embodiment of the present application, Figure 3 Based on the method shown, Figure 4 In the display screen shown, the input end of the second switch 110 is connected to the second connection point 111 of the controller 109, and the second connection point 111 is used to provide an initial voltage Vd.

[0069] exist Figure 4 In the illustrated manner, the initial voltage Vd may be directly provided through a second connection point 111 in the controller 109 , and the initial voltage Vd may be directly input to the target line through the controller 109 .

[0070] The controller 109 may provide the second switch 110 with a second switch control signal, so that when the controller 109 controls the second switch 110 to be turned on through the second switch control signal, the initial voltage Vd is synchronously input to the second switch 110. Moreover, when the controller 109 controls the second switch 110 to be turned off through the second switch control signal, the second connection point 111 may be synchronously closed to output the initial voltage signal Vd. This method may achieve synchronization of the switching state of the second switch 110 and the timing control of the initial voltage Vd, and may timely input the initial voltage Vd to the second switch 110 when the second switch 110 is turned on, and may timely stop the output of the initial voltage Vd when the second switch 110 is turned off, so as to reduce power consumption.

[0071] In other embodiments, a separate power supply circuit may be provided outside the controller 109 to provide the initial voltage Vd.

[0072] Optionally, the switch control signal of the first switch 106 and / or the second switch 110 may be provided by the controller 109, and the controller 109 has a contact for providing the switch control signal of the first switch 106 and / or the second switch 110. In other embodiments, the switch control signal of the first switch 106 and / or the second switch 110 may also be provided by a clock circuit outside the controller 109.

[0073] In one embodiment, the initial voltage Vd is a fixed voltage. At this time, all second switches 110 can use the same fixed voltage as the initial voltage Vd, which is convenient for the timing control of the initial voltage Vd in the display screen, and is convenient for implementing the pre-charging control of the target line, which can reduce the complexity of the control method of the display screen.

[0074] Optionally, the fixed voltage satisfies a matching condition with a target voltage of the data to be displayed; the target voltage is the maximum driving voltage Vdata max and minimum driving voltage Vdata min The target voltage is set to half of the difference. 0 , then the target voltage V 0 Can be:

[0075]

[0076] For a certain display screen, Vdata when the display pixel 101 displays the maximum brightness max and Vdata when displaying minimum brightness min These are all constant values ​​that can be determined. For example, for a display that can display grayscales from 0 to 255, Vdata min is the driving voltage when the pixel 101 displays 0 grayscale, Vdata max is the driving voltage when the display pixel 101 displays 255 gray levels.

[0077] In one embodiment, the fixed voltage may be equal to the target voltage, that is, Vd is equal to or approximately equal to V 0 This method directly uses the fixed V0 as Vd, which is convenient for determining the value of Vd.

[0078] In another embodiment, the initial voltage Vd may also be less than the driving voltage Vdata of the data to be displayed of the target line. In this manner, for a row of display pixels 101 to be scanned, the initial voltage Vd may be determined according to the driving voltage Vdata of the data to be displayed of the display pixels 101. When the driving voltage Vdata of the display pixels 101 is different, the initial voltage Vd input to the target line to which it is connected is different. In this manner, the initial voltage is related to the driving voltage of the current scanning sequence, and in the process of precharging the target line through the second switch 110, the precharged initial voltage Vd may be prevented from exceeding the driving voltage Vdata of the data to be displayed, thereby avoiding the overcharging problem caused thereby.

[0079] A plurality of different initial voltages may also be preset, such as pre-storing three different initial voltages VI1 to VI3. During the display driving process of the display screen, an appropriate one of the three pre-stored initial voltages is selected for pre-charging according to the driving voltage of the target line.

[0080] Optionally, in the embodiment of the present application, the target line obtains the initial voltage before the driving voltage. That is, before turning on the first switch 106 connected to the target line, the second switch 110 is turned on, so that the initial voltage is input before the driving voltage is input to the target line, thereby reducing the charging time of the subsequent input driving voltage to the target line.

[0081] In the display screen, the first switch control signal controls the conduction state of the first switch 106, and the second switch control signal controls the conduction state of the second switch 110. In the same data drive line group, some data drive lines 102 are target lines, and other data drive lines 102 are non-target lines.

[0082] As described below, in the same data drive line group, the first switch control signal of the first switch 106 connected to the non-target line and the second switch control signal of the second switch 110 connected to the target line can be the same switch control signal, both from the same control signal line, or the two are different switch control signals, respectively from different control signal lines.

[0083] In one method, the second switch control signal of the target line and the first switch control signal of the non-target line belong to the same control signal; the second switch control signal of the target line and the first switch control signal of the non-target line come from the same control signal line. In this method, for the same data drive line group, the first switch control signal of the first switch 106 connected to the non-target line can be reused as the second switch control signal of the second switch 110 connected to the target line. In this way, in the process of turning on the first switch 106 connected to the non-target line by the first switch control signal to charge the non-target line input drive voltage, the second switch 110 connected to the target line can be turned on synchronously by the first switch control signal of the non-target line to input the initial voltage to pre-charge the target line. This method can synchronize the pre-charging process of the target line and the charging process of the non-target line, and the pre-charging process of the target line will not occupy the scanning period of the target line.

[0084] Optionally, the control timing of the first switch 106 of the non-target line is earlier than the control timing of the first switch 106 of the target line. That is, for the same data drive line group, the first switch 106 of the non-target line is turned on first to charge the non-target signal line input drive voltage first. During the charging process of the non-target line, the first switch 106 of the target line is not turned on, so that the charging time of the non-target line can be used to turn on the second switch 110 connected to the target line to achieve pre-charging of the target line.

[0085] In a scanning period of a row of display pixels, if the difference between the driving voltage of the target line and the driving voltage of the previous row is greater than a set threshold, the second switch 110 is turned on before the first switch 106 of the target line is turned on. At this time, it indicates that the driving voltage of the target line is greatly different from the driving voltage of the previous row, and the second switch 110 is turned on to pre-charge the target line, which can effectively reduce the charging time of the target line.

[0086] In a scanning cycle of a row of display pixels, if the difference between the driving voltage of the target line and the driving voltage of the previous row is not greater than the set threshold, the second switch 110 is continuously closed during the scanning cycle. At this time, it indicates that the driving voltage of the target line is slightly different from the driving voltage of the previous row, and it is less difficult to charge the target line to the driving voltage of the current data to be displayed based on the saved driving voltage of the previous row, and the required charging time is less, so the target line does not need to be pre-charged, and the second switch 110 can be continuously closed to reduce power consumption.

[0087] Among them, the set threshold can be set according to needs. For example, the set threshold can indicate that the difference between the display grayscale corresponding to the driving voltage of the target line and the display grayscale corresponding to the driving voltage of the previous line is greater than 100, or greater than 120. The embodiment of the present application does not limit the set threshold.

[0088] For the same data driving line group, the first switches 106 connected to the data driving lines 102 are respectively connected to different first control signal lines 104 , and the first control signal lines 104 are used to input first switch control signals.

[0089] like Figure 3 and Figure 4 As shown, if the data driving line group has two data driving lines 102, the first switches 106 connected to the two data driving lines 102 are respectively connected to a first control signal line 104. One data driving line group needs to be connected to two first control signal lines 104. The first switch control signals input to the two first control signal lines 104 are Figure 3 and Figure 4 Mux 1 and Mux 2 express.

[0090] Optionally, each data drive line group may be provided with m data drive lines 102, where m is a positive integer greater than 1. The m data drive lines 102 in the same data drive line group are sequentially the first data drive line to the mth data drive line. The data drive line group has m-1 target lines, and the second data drive line to the mth data drive line are all target lines, and each target line is respectively connected to a second switch 110; the first data drive line is a non-target line, and the non-target line is not connected to the second switch 110.

[0091] In the same data driving line group, the second switches 110 connected to the 2nd to mth data driving lines are all connected to the first control signal line 104 connected to the 1st data driving line. In this way, the m-1 target lines in the same data driving line group can be precharged synchronously while the non-target lines are being charged.

[0092] For different data drive line groups, the first switch 106 connected to the j-th data drive line is connected to the same first control signal line 104, where j is a positive integer not greater than m. In this way, the first switch 106 connected to the j-th data drive line in each data drive line group can be controlled to be turned on by the same first control signal line 104, and when there are multiple data drive line groups, the number of first control signal lines 104 can be reduced.

[0093] refer to Figure 5 , Figure 5 This is a structural schematic diagram of another display screen provided in an embodiment of the present application. Based on other implementations, Figure 5In the illustrated manner, the data drive line group has two data drive lines 102, one is a non-target line and the other is a target line. The display pixels 101 in a column connected to the non-target line are all first color light emitting elements, such as all green light emitting elements G. The display pixels 101 in a column connected to the target line are alternately arranged second color light emitting elements and third color light emitting elements, such as alternately arranged red light emitting elements R and blue light emitting elements B.

[0094] Compared with a column of display pixels 101 with a single luminous color, a column of display pixels 101 with two luminous colors arranged alternately has a higher probability of a significant switching of the driving voltage in adjacent scanning periods. Figure 5 In the manner shown, a non-target line can be connected to a column of display pixels 101 of a single luminous color, and a target line can be connected to a column of display pixels 101 of two luminous colors arranged alternately. This can make it possible for a column of display pixels 101 of a single luminous color whose driving voltage is not easily switched significantly to not need to be pre-charged to reduce power consumption. It can also be possible for a column of display pixels 101 of two luminous colors arranged alternately whose driving voltage is easily switched significantly to be pre-charged to reduce the charging time of the driving voltage.

[0095] From the above description, it can be seen that the embodiment of the present application can pre-charge the target line and shorten the Mux 2 The opening time of Mux can be shortened, that is, the time period t3 mentioned above can be shortened to avoid the problem of insufficient charging of the target line when the driving voltages of the display pixels 101 in the front and rear rows are greatly different. 2 The opening time of Mux can be shortened to reduce the scanning cycle time and increase the refresh frequency. 1 and Mux 2 The interval time t2 between them compresses the scanning cycle 1H and increases the refresh frequency.

[0096] refer to Figure 6 , Figure 6 This is a structural diagram of another display screen provided in an embodiment of the present application. Based on other implementations, Figure 6 In the illustrated embodiment, the second switch 110 is connected to a separate second control signal line 112. The second switches 110 in different data driving line groups may use the same second control signal line 112. Figure 6 In Mux 3 represents the second switch control signal inputted by the second control signal line 112 .

[0097] refer to Figure 7 and Figure 8 , Figure 7 for Figure 6 The charging timing diagram with the pre-charging process turned off in the display shown, Figure 8 for Figure 7 The charging timing diagram of the pre-charging process is shown in the display screen. Compared with the first switch 106, since the second switch 110 uses a separate second control signal line 112, the second switch 110 can be independently controlled.

[0098] like Figure 7 As shown, if the difference between the driving voltage of the target line and the driving voltage of the previous line is not greater than the set threshold, within the scanning period 1H of the display pixel 101 in the i-th row, Mux 3 Continuous closure, i.e. Mux 3 The voltage is continuously at a high level, so that the second switch 110 is continuously closed, and the target line does not need to be precharged, thereby reducing power consumption.

[0099] like Figure 8 As shown, if the difference between the driving voltage of the target line and the driving voltage of the previous line is greater than the set threshold, within the scanning period 1H of the display pixel 101 in the i-th row, Mux 3 With Mux 1 Synchronous start, so that during the charging process of non-target lines, Mux is synchronously turned on 3 , so that when the first switch 106 of the non-target line is turned on, the second switch 110 of the target line is turned on synchronously to precharge the target line.

[0100] Based on the display screen provided in the above embodiment, another embodiment of the present application further provides a method for controlling the display screen. The control method is as follows: Fig. 9 shown.

[0101] refer to Fig. 9 , Fig. 9 A flow chart of a control method provided in an embodiment of the present application, the control method comprising:

[0102] Step S11: Turn on the second switch of the data driving line to charge the display pixels connected to the data driving line.

[0103] Step S12: Turn on the first switch of the data driving line to continue charging the display pixels connected to the data driving line.

[0104] As described above, the data driving line connected to the second switch is the target line, and the data line not connected to the second switch is the non-target line. The target line can be charged with an initial voltage by turning on the connected second switch to perform pre-charging.

[0105] The timing of turning on the second switch of the data driving line is earlier than that of turning on the first switch of the data driving line. By turning on the second switch, the initial voltage obtained by the data driving line is not equal to zero.

[0106] In a scanning cycle of a row of display pixels, if the difference between the driving voltage of the target line and the driving voltage of the previous row is greater than a set threshold, the second switch is turned on before the first switch of the target line is turned on; if the difference is not greater than the set threshold, the second switch is continuously closed during the scanning cycle.

[0107] The control method may be executed by a controller in a display screen, and the implementation principle of the control method may be described with reference to the above embodiment.

[0108] The control method embodiment is applicable to the above-mentioned display screen and has the same or corresponding beneficial effects as the display screen embodiment. To avoid repetition, it will not be described again here.

[0109] In the specification of this application, each embodiment is described in a progressive, parallel, or progressive and parallel manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. The implementation methods provided in the embodiments of this application can be combined with each other if there is no contradiction.

[0110] It should be noted that in the description of the present application, it should be understood that the description of the drawings and embodiments is illustrative rather than restrictive. The same reference numerals throughout the embodiments of the specification identify the same structure. In addition, for the sake of understanding and ease of description, the drawings may exaggerate the thickness of some layers, films, panels, regions, etc. It is also understood that when an element such as a layer, film, region, or substrate is referred to as "on" another element, the element may be directly on the other element or there may be an intermediate element. In addition, "on" refers to positioning an element on or below another element, but does not essentially refer to positioning on the upper side of another element according to the direction of gravity.

[0111] The terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0112] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0113] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Display screen, including: A display panel, wherein each column of display pixels in the display panel corresponds to a data drive line, and each of the data drive lines is connected to a first switch; A controller, wherein at least two data drive lines correspond to a first connection point of the controller, and the first connection point is used to provide a drive voltage for data to be displayed; Among them, the at least two data drive lines corresponding to each of the first connection points form a data drive line group, at least one of the data drive lines in the data drive line group is a target line, and the target line is connected to a second switch, and the second switch is in an on state to provide an initial voltage for the target line, and the initial voltage is not equal to zero. 2 . The display screen according to claim 1 , wherein an input end of the second switch is connected to a second connection point of the controller, and the second connection point is used to provide the initial voltage.

3. The display screen according to claim 1 or 2, wherein the initial voltage is a fixed voltage, and the fixed voltage satisfies a matching condition with a target voltage; and the target voltage is half of a difference between a maximum driving voltage and a minimum driving voltage. 4 . The display screen according to claim 1 , wherein the initial voltage is smaller than a driving voltage of the target line for displaying data. 5 . The display screen according to claim 1 , wherein the target line obtains the initial voltage prior to the driving voltage of the data to be displayed.

6. The display screen according to claim 5, wherein the second switch control signal of the target line and the first switch control signal of the non-target line are the same control signal; The second switch control signal of the target line and the first switch control signal of the non-target line are from the same control signal line. 7 . The display screen according to claim 6 , wherein a control timing of the first switch of the non-target line is earlier than a control timing of the first switch of the target line.

8. The display screen according to claim 1, in a scanning period of a row of display pixels, if the difference between the driving voltage of the target line and the driving voltage of the previous row is greater than a set threshold, the second switch is turned on before the first switch of the target line is turned on; if the difference is not greater than the set threshold, the second switch is continuously turned off during the scanning period.

9. A method for controlling a display screen, the method comprising: Turning on a second switch of the data drive line to charge the display pixel connected to the data drive line; Turning on the first switch of the data drive line to continue charging the display pixels connected to the data drive line; The timing of turning on the second switch of the data driving line is earlier than the timing of turning on the first switch of the data driving line. By turning on the second switch, the initial voltage obtained by the data driving line is not equal to zero.

10. The control method according to claim 9, wherein the data drive line connected to the second switch is a target line; in a scanning period of a row of display pixels, if the difference between the drive voltage of the target line and the drive voltage of the previous row is greater than a set threshold, the second switch is turned on before turning on the first switch of the target line; if the difference is not greater than the set threshold, the second switch is continuously turned off during the scanning period.

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