Display panel, control method thereof and display device

Abstract

The invention provides a display panel, a control method thereof and a display device, and relates to the technical field of display. The minimum voltage change value during liquid crystal driving voltage switching is limited by the minimum value capable of being set by the gray-scale voltage chip, two output channels of the gray-scale voltage chip are combined into a new output channel by arranging the voltage dividing assembly, and the new output channel is the output channel corresponding to the output end of the voltage dividing assembly. At the moment, the voltage change minimum value during liquid crystal driving voltage switching is the difference value between the target voltage at the current moment and the target voltage at the previous moment, and the difference value is smaller than the stepping voltage value of the gray scale voltage chip for adjusting the voltage of the output channel of the gray scale voltage chip. Compared with the prior art, under the condition that the settable minimum value of the gray scale voltage chip is not changed, the minimum step value of liquid crystal driving voltage switching is reduced, the risk that the brightness difference phenomenon which can be recognized by human eyes can occur during liquid crystal driving voltage switching is reduced, and then the display effect of the display panel is improved.

Description

Technical Field

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

[0002] With the continuous development of science and technology, various display devices have been widely used in people's lives and work, bringing great convenience to people's daily lives. As one of the important components of display devices, the design of display panels will directly or indirectly affect the display effect of display devices.

[0003] Therefore, how to improve the display effect of the display panel is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] In view of the above problems, the present application provides a display panel and a control method thereof, and a display device, to achieve the purpose of improving the display effect of the display panel. The specific solution is as follows:

[0005] A first aspect of the present application provides a display panel, the display panel comprising: at least one grayscale voltage chip and a voltage dividing component, the grayscale voltage chip comprising a plurality of output channels;

[0006] The first input end of the voltage divider component is electrically connected to the first output channel, and the second input end of the voltage divider component is electrically connected to the second output channel; when the number of the grayscale voltage chips is greater than or equal to two, the grayscale voltage chips to which the first output channel and the second output channel belong are the same or different;

[0007] The voltage divider component is used to receive the first voltage output by the first output channel at the current moment through the first input terminal; receive the second voltage output by the second output channel at the current moment through the second input terminal; perform voltage division processing on the first voltage and the second voltage at the current moment, so as to output the target voltage at the current moment through its output terminal;

[0008] The first voltage at the current moment is obtained by adjusting the first voltage output by the first output channel at the previous moment by a step voltage value, and the difference between the target voltage at the current moment and the target voltage at the previous moment is less than the step voltage value.

[0009] A second aspect of the present application provides a method for controlling a display panel, the method comprising:

[0010] Adjusting a first voltage output by the first output channel at a previous moment by a step voltage value to obtain a first voltage output by the first output channel at a current moment;

[0011] The first output channel is controlled to output the first voltage at the current moment, and the second output channel is controlled to output the second voltage at the current moment, so as to achieve:

[0012] The control voltage divider component receives the first voltage output by the first output channel at the current moment through the first input terminal; receives the second voltage output by the second output channel at the current moment through the second input terminal; performs voltage division processing on the first voltage and the second voltage at the current moment to output the target voltage at the current moment through its output terminal; wherein the difference between the target voltage at the current moment and the target voltage at the previous moment is less than the step voltage value.

[0013] A third aspect of the present application provides a display device, which includes the display panel described above.

[0014] By means of the above technical solution, the present application provides a display panel and a control method thereof, and a display device. The minimum voltage change value when the liquid crystal driving voltage is switched is limited by the minimum value that can be set by the grayscale voltage chip. By setting a voltage divider component, the two output channels of the original grayscale voltage chip are merged into a new output channel. This new output channel can be understood as the output channel corresponding to the output end of the voltage divider component. At this time, the minimum voltage change value when the liquid crystal driving voltage is switched is the difference between the target voltage at the current moment and the target voltage at the previous moment, and the difference is less than the step voltage value of the grayscale voltage chip to adjust the voltage of its own output channel. Compared with the prior art, without changing the minimum value that can be set by the grayscale voltage chip (i.e., the step voltage value of the first voltage), the minimum step value of the liquid crystal driving voltage switching is reduced, thereby reducing the voltage change accuracy of each change of the liquid crystal driving voltage, and reducing the risk of the brightness difference phenomenon that can be recognized by the human eye when the liquid crystal driving voltage is switched, thereby improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0016] Figure 1 A schematic diagram of a voltage divider component provided by an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of a display panel provided by an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0020] Figure 5 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0021] Figure 6 A schematic diagram of the relationship between a liquid crystal driving voltage and a brightness change rate caused by a voltage change provided by an embodiment of the present invention;

[0022] Figure 7 A schematic diagram of the circuit structure of a voltage divider component provided in an embodiment of the present invention;

[0023] Figure 8 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0024] Fig. 9 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0025] Fig.10 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0026] Fig.11 A schematic flow chart of a method for controlling a display panel provided by an embodiment of the present invention;

[0027] Fig.12 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation mode of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. It is known to those skilled in the art that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] It should be noted that the directional words appearing in the present invention are based on the relative position relationship shown in the drawings and cannot be used as an absolute limitation to the present application.

[0031] refer to Figure 1 , Figure 1 A schematic diagram of a voltage divider component provided in an embodiment of the present invention, referring to Figure 2 , Figure 2A schematic diagram of a display panel provided by an embodiment of the present invention, referring to Figure 3 , Figure 3 A schematic diagram of another display panel provided by an embodiment of the present invention, referring to Figure 4 , Figure 4 A schematic diagram of another display panel provided by an embodiment of the present invention. The display panel provided by an embodiment of the present invention comprises: at least one grayscale voltage chip Gamma-IC and a voltage dividing component 11, wherein the grayscale voltage chip Gamma-IC comprises a plurality of output channels. Figure 2 In the above, the display panel includes a grayscale voltage chip as an example for description, namely, the first grayscale voltage chip Gamma-IC-1; Figure 3 and Figure 4 As shown, a display panel including two grayscale voltage chips Gamma-IC is taken as an example for description, namely a first grayscale voltage chip Gamma-IC-1 and a second grayscale voltage chip Gamma-IC-2.

[0032] The first input terminal InA of the voltage divider component 11 is electrically connected to the first output channel, and the second input terminal InB of the voltage divider component 11 is electrically connected to the second output channel; when the number of the grayscale voltage chips Gamma-IC is greater than or equal to two, the grayscale voltage chips Gamma-IC to which the first output channel and the second output channel belong are the same or different. Figure 3 As shown, the grayscale voltage chip Gamma-IC to which the first output channel and the second output channel belong is the same; Figure 4 As shown, the grayscale voltage chips Gamma-IC to which the first output channel and the second output channel belong are different.

[0033] Furthermore, the number of the grayscale voltage chips Gamma-IC included in the display panel may be other numbers, see Figure 5 , Figure 5 A schematic diagram of another display panel provided by an embodiment of the present invention is provided, taking a display panel including three grayscale voltage chips Gamma-IC as an example for explanation, namely, a first grayscale voltage chip Gamma-IC-1, a second grayscale voltage chip Gamma-IC-2 and a third grayscale voltage chip Gamma-IC-3.

[0034] The voltage divider component 11 is used to receive the first voltage output by the first output channel at the current moment through the first input terminal; receive the second voltage output by the second output channel at the current moment through the second input terminal; and perform voltage division processing on the first voltage and the second voltage at the current moment to output the target voltage at the current moment through its output terminal OUT.

[0035] The first voltage at the current moment is obtained by adjusting the first voltage output by the first output channel at the previous moment by a step voltage value, and the difference between the target voltage at the current moment and the target voltage at the previous moment is less than the step voltage value.

[0036] Specifically, in the embodiment of the present invention, a grayscale voltage chip Gamma-IC including N output channels is used as an example for description. Figure 2-Figure 5 As shown, the grayscale voltage chip Gamma-IC includes an out-1 output channel, an out-2 output channel, ..., an out-N output channel as an example for explanation, wherein the voltages output by any two output channels are different, that is, the voltage output by the out-i output channel is different from the voltage output by the out-(i+1) output channel, 1≤i<N.

[0037] like Figure 3 As shown, the first output channel and the second output channel electrically connected to the voltage divider component 11 belong to the same grayscale voltage chip Gamma-IC; in the embodiment of the present invention, the first output channel and the second output channel are both output channels on the first grayscale voltage chip Gamma-IC-1.

[0038] like Figure 4 As shown, the first output channel and the second output channel electrically connected to the voltage divider component 11 belong to different grayscale voltage chips Gamma-IC; in the embodiment of the present invention, an example is taken for explanation in which one of the first output channel and the second output channel is an output channel on the first grayscale voltage chip Gamma-IC-1, and the other output channel is an output channel on the second grayscale voltage chip Gamma-IC-2.

[0039] In the process of the invention of the present application, it is found that the minimum voltage change value when the liquid crystal drive voltage is switched is limited by the minimum value that can be set by the grayscale voltage chip Gamma-IC. The settable minimum value is the step voltage value Vt of the first voltage adjustment mentioned above. In other words, if the first voltage output by the grayscale voltage chip Gamma-IC at the previous moment is V1, then the first voltage output by the grayscale voltage chip Gamma-IC at the current moment is V1+Vt. It can be understood that the liquid crystal drive voltage at the previous moment is V2, and the liquid crystal drive voltage at the next moment is V2+Vt; in other words, the minimum step value of the current liquid crystal drive voltage switching is Vt.

[0040] refer to Figure 6 , Figure 6 A schematic diagram of the relationship between a liquid crystal driving voltage and a brightness change rate caused by a voltage change provided by an embodiment of the present invention. Figure 6As shown, curve 1 represents the curve corresponding to a change in liquid crystal driving voltage of 7mV, curve 2 represents the curve corresponding to a change in liquid crystal driving voltage of 10mV, and curve 3 represents the curve corresponding to a change in liquid crystal driving voltage of 15mV. Figure 6 The results show that when the LCD driving voltage changes by 10mV, the brightness change rate exceeds 3% in the range of 1V-2.5V, which is higher than the brightness change rate that can be recognized by the human eye. If the brightness change rate needs to be controlled below 3%, the change in the LCD driving voltage needs to be less than or equal to 7mV.

[0041] The liquid crystal drive voltage is provided by a grayscale voltage chip. However, the current minimum value that can be set for the grayscale voltage chip is approximately 13mV, which cannot be lower than 13mV, that is, Vt≈13mV. This causes the display panel to have brightness differences that are recognizable to the human eye when the liquid crystal drive voltage is switched, which seriously affects the display effect of the display panel.

[0042] Based on this, in the embodiment of the present invention, by setting the voltage divider component 11, the two output channels of the original grayscale voltage chip Gamma-IC are merged into a new output channel. This new output channel can be understood as the output channel corresponding to the output end OUT of the voltage divider component 11. At this time, the minimum voltage change value when the liquid crystal driving voltage is switched is the difference Vk between the target voltage at the current moment and the target voltage at the previous moment, and the difference Vk is less than the step voltage value Vt mentioned above, that is, there is a relationship of Vk<Vt. It can be understood that the liquid crystal driving voltage at the previous moment is V2, and the liquid crystal driving voltage at the next moment is V2+Vk; in other words, the minimum step value of the liquid crystal driving voltage switching is changed from Vt to Vk. Compared with the prior art, without changing the minimum value that can be set by the grayscale voltage chip Gamma-IC, the minimum step value of the liquid crystal driving voltage switching is reduced, thereby reducing the voltage change accuracy of each change of the liquid crystal driving voltage, and reducing the risk of the human eye being able to recognize the brightness difference when the liquid crystal driving voltage is switched, thereby improving the display effect of the display panel.

[0043] In an optional embodiment of the present invention, the difference between the target voltage at the current moment and the target voltage at the previous moment is less than or equal to 7mV, that is, there is a relationship of Vk≤7mV, thereby ensuring that when the liquid crystal driving voltage changes, that is, when it changes in steps of less than or equal to 7mV, the brightness change rate of the display panel is less than 3%, and the display panel will not have brightness differences that are recognizable to the human eye, thereby maximizing the display effect of the display panel.

[0044] In an optional embodiment of the present invention, reference Figure 7 , Figure 7A schematic diagram of a circuit structure of a voltage divider component provided in an embodiment of the present invention. The voltage divider component 11 provided in an embodiment of the present invention comprises: a first resistor R1 and a second resistor R2.

[0045] The first end of the first resistor R1 serves as the first input end InA, and the first end of the second resistor R2 serves as the second input end InB.

[0046] The second end of the first resistor R1 is electrically connected to the second end of the second resistor R2 , and a connection node serves as the output end OUT.

[0047] Specifically, in the embodiment of the present invention, it is assumed that the first voltage output by the first output channel at the previous moment is V1, the second voltage output by the second output channel is Va, and the voltage output by the output terminal OUT of the voltage divider component 11 is VOUT1. VOUT1 can also be understood as the target voltage output by the voltage divider component 11 at the previous moment.

[0048]

[0049] At the current moment, the voltage output by the first output channel is V1+Vt, that is, the first voltage V1 output by the first output channel at the previous moment is obtained after adjusting a step voltage value Vt. At the current moment, the second voltage output by the second output channel is Va. At the current moment, the voltage output by the output terminal OUT of the voltage divider component 11 is VOUT2. VOUT2 can also be understood as the target voltage output by the voltage divider component 11 at the current moment.

[0050]

[0051] At this time, the difference between the current target voltage of the voltage divider 11 and the previous target voltage is VOUT2-VOUT1, that is, Vk=VOUT2-VOUT1. It can be understood that the step value of the voltage output by the output terminal OUT of the voltage divider 11 is Vk.

[0052]

[0053] It can be seen from this that the minimum step value of the liquid crystal driving voltage switching changes from Vt to Vk. At this time, there is a relationship of Vk<Vt. Compared with the prior art, without changing the minimum value that can be set by the grayscale voltage chip Gamma-IC, the minimum step value of the liquid crystal driving voltage switching is reduced, thereby improving the variation accuracy of the liquid crystal driving voltage, and reducing the risk of brightness differences that can be recognized by the human eye when the liquid crystal driving voltage is switched, thereby improving the display effect of the display panel.

[0054] By adjusting the resistance values ​​of the first resistor R1 and the second resistor R2, the voltage change accuracy output by the output terminal OUT of the voltage divider component 11 can be reduced. When the resistance values ​​of the first resistor R1 and the second resistor R2 are the same, Vk=Vt / 2, and Vk is less than 7mV at this time. The brightness change rate of the display panel is less than 3%, and the display panel will not have brightness differences that can be recognized by the human eye, thereby maximizing the display effect of the display panel.

[0055] In an optional embodiment of the present invention, a difference between the first voltage at the last moment and the second voltage output by the second output channel at the last moment is not greater than 0.2V.

[0056] Specifically, in the embodiment of the present invention, assuming that the first voltage output by the first output channel at the last moment is V1, and the second voltage output by the second output channel is Va, there exists a relationship of V1-V2≤0.2V.

[0057] When the voltage difference between V1 and Va is large, for example, greater than 0.2V, in order to achieve regulation of the target voltage output by the voltage divider component 11, the resistance values ​​of the first resistor R1 and the second resistor R2 need to be set very large.

[0058] For example, when V1=10V and Va=4V, the voltage difference between the two is 6V. If the resistance of the first resistor R1 and the second resistor R2 is small, in the case of 2Ω-3Ω, the current on the first resistor R1 and the second resistor R2 will be very large. Such a design will increase power consumption and cause power consumption loss of the display panel.

[0059] Therefore, when the voltage difference between V1 and Va is large, in order to reduce the power consumption loss of the display panel, the resistance values ​​of the first resistor R and the second resistor R2 will be set very large, such as setting the first resistor R1 and the second resistor R2 to the kilo-ohm level. However, the first resistor R1 and the second resistor R2 of the kilo-ohm level are equivalent to a large load. At this time, the current divided to the output terminal OUT of the voltage divider component 11 will be very small, that is, the current that can flow out from the output terminal of the voltage divider component 11 will be very small, and the load capacity of the output terminal OUT of the voltage divider component 11 will become smaller. In other words, although the voltage value of the target voltage output by the output terminal OUT of the voltage divider component 11 meets the requirements, the small current will cause the display panel to fail to display normally.

[0060] Therefore, in the embodiment of the present invention, the difference between the first voltage at the previous moment and the second voltage output by the second output channel at the previous moment is set to be no more than 0.2V, for example, V1=10V, Va=10.1V, and the voltage difference between the two is 0.1V. At this time, the resistance values ​​of the first resistor R1 and the second resistor R2 can be set to be smaller, and no additional power consumption is added. In addition, the load-carrying capacity of the output terminal OUT of the voltage divider component 11 will also become stronger.

[0061] In an optional embodiment of the present invention, reference Figure 8 , Figure 8 A schematic diagram of another display panel provided by an embodiment of the present invention: When the first output channel and the second output channel belong to the same grayscale voltage chip Gamma-IC, the first output channel and the second output channel are two adjacent output channels of the grayscale voltage chip Gamma-IC.

[0062] Specifically, in the embodiments of the present invention, Figure 8 As shown, the first output channel and the second output channel electrically connected to the voltage divider component 11 belong to the same grayscale voltage chip Gamma-IC. In the embodiment of the present invention, the first grayscale voltage chip Gamma-IC-1 to which the first output channel and the second output channel belong is taken as an example for description. That is, the out-i output channel and the out-(i+1) output channel of the first grayscale voltage chip Gamma-IC-1 are electrically connected to the first input terminal InA and the second input terminal InB of the voltage divider component 11, respectively.

[0063] Since the difference in voltage output by two adjacent output channels of the same grayscale voltage chip Gamma-IC is less than 0.2V, in an embodiment of the present invention, two adjacent output channels in the same grayscale voltage chip Gamma-IC are used as the first output channel and the second output channel to merge into a new output channel.

[0064] In an optional embodiment of the present invention, reference Fig. 9 , Fig. 9 A schematic diagram of another display panel provided by an embodiment of the present invention, referring to Fig.10 , Fig.10 A schematic diagram of another display panel provided by an embodiment of the present invention. When the grayscale voltage chips Gamma-IC to which the first output channel and the second output channel belong are different, the second voltage output by the second output channel at the previous moment is less than or equal to the voltage output by the target output channel at the previous moment.

[0065] The target output channel and the first output channel are adjacent output channels in the same grayscale voltage chip Gamma-IC, and a voltage output by the target output channel at a previous moment is less than a first voltage output by the first output channel at a previous moment.

[0066] It should be noted that, in the embodiment of the present application, the voltages output by the N output channels of the same grayscale voltage chip Gamma-IC are different. Generally, the voltages output by the N output channels from the first output channel out-1 to the Nth output channel out-N will decrease or increase in sequence. In the embodiment of the present invention, the voltage output by the N output channels from the first output channel out-1 to the Nth output channel out-N decreases in sequence as an example for explanation.

[0067] Specifically, in the exemplary embodiment of the present invention, when the first output channel is the out-2 output channel of the first grayscale voltage chip Gamma-IC-1, the output channels adjacent to the out-2 output channel of the first grayscale voltage chip Gamma-IC-1 include the out-1 output channel of the first grayscale voltage chip Gamma-IC-1 and the out-3 output channel of the first grayscale voltage chip Gamma-IC-1. Therefore, the out-1 output channel of the first grayscale voltage chip Gamma-IC-1 can be used as the target output channel, and the out-3 output channel of the first grayscale voltage chip Gamma-IC-1 can also be used as the target output channel. In the embodiment of the present invention, the out-3 output channel of the first grayscale voltage chip Gamma-IC-1 is used as the target output channel as an example for explanation.

[0068] Afterwards, based on the out-3 output channel of the first grayscale voltage chip Gamma-IC-1, a suitable output channel is selected in the second grayscale voltage chip Gamma-IC-2 as the second output channel.

[0069] like Fig. 9 As shown, the grayscale voltage chip Gamma-IC includes a first grayscale voltage chip Gamma-IC-1 and a second grayscale voltage chip Gamma-IC-2; the first grayscale voltage chip Gamma-IC-1 and the second grayscale voltage chip Gamma-IC-2 include N output channels, N is a positive integer, N≥2.

[0070] It should be noted that in the embodiment of the present application, during the design process of different grayscale voltage chips Gamma-IC, the voltages output by the same output channels of different grayscale voltage chips Gamma-IC may be the same or different. For example, the voltage output by the i-th output channel of the first grayscale voltage chip Gamma-IC-1 is the same as the voltage output by the i-th output channel of the second grayscale voltage chip Gamma-IC-2, or the voltage output by the i-th output channel of the first grayscale voltage chip Gamma-IC-1 is different from the voltage output by the i-th output channel of the second grayscale voltage chip Gamma-IC-2. When the voltage output by the i-th output channel of the first grayscale voltage chip Gamma-IC-1 is different from the voltage output by the i-th output channel of the second grayscale voltage chip Gamma-IC-2, it can be designed that the difference between the voltage output by the i-th output channel of the first grayscale voltage chip Gamma-IC-1 and the voltage output by the i-th output channel of the second grayscale voltage chip Gamma-IC-2 is not greater than 0.2V; obviously, it can also be designed that the difference between the voltage output by the i-th output channel of the first grayscale voltage chip Gamma-IC-1 and the voltage output by the i+1-th output channel of the second grayscale voltage chip Gamma-IC-2 is not greater than 0.2V.

[0071] Therefore, when the i-th output channel in the first grayscale voltage chip Gamma-IC-1 is selected as the first output channel, the i-th output channel in the second grayscale voltage chip Gamma-IC-2 can be selected as the second output channel, where i is a positive integer, 1≤i<N, to ensure that the difference between the voltage output by the first output channel and the voltage output by the second output channel is no more than 0.2V.

[0072] like Fig.10 As shown, the grayscale voltage chip Gamma-IC includes a first grayscale voltage chip Gamma-IC-1 and a second grayscale voltage chip Gamma-IC-2; the first grayscale voltage chip Gamma-IC-1 and the second grayscale voltage chip Gamma-IC-2 include N output channels, N is a positive integer, N≥2.

[0073] The i-th output channel in the first grayscale voltage chip Gamma-IC-1 serves as the first output channel, and the i+1-th output channel in the second grayscale voltage chip Gamma-IC-2 serves as the second output channel, where i is a positive integer, 1≤i<N, to ensure that the difference between the voltage output by the first output channel and the voltage output by the second output channel is no more than 0.2V.

[0074] It should be noted that in the embodiment of the present invention, the number of grayscale voltage chips Gamma-IC and the number of voltage divider components 11 can be increased for further refinement, for example, the output of two voltage divider components 11 can be used as the input of another voltage divider component 11, and so on.

[0075] Based on the above embodiment of the present invention, another embodiment of the present invention further provides a method for controlling a display panel. Fig.11 , Fig.11 A flow chart of a method for controlling a display panel provided by an embodiment of the present invention. The method for controlling a display panel provided by an embodiment of the present invention includes:

[0076] S101: adjusting a first voltage output by a first output channel at a previous moment by a step voltage value to obtain a first voltage output by the first output channel at a current moment.

[0077] S102: Control the first output channel to output the first voltage at the current moment, and control the second output channel to output the second voltage at the current moment, so as to achieve: control the voltage divider component 11 to receive the first voltage output by the first output channel at the current moment through the first input terminal InA; receive the second voltage output by the second output channel at the current moment through the second input terminal InB; perform voltage division processing on the first voltage and the second voltage at the current moment, so as to output the target voltage at the current moment through its output terminal OUT; wherein the difference between the target voltage at the current moment and the target voltage at the previous moment is less than the step voltage value.

[0078] It should be noted that the principle of the control method of the display panel provided in the embodiment of the present invention is the same as the working principle of the display panel provided in the above embodiment, and will not be repeated here.

[0079] Based on the above embodiments of the present invention, accordingly, the embodiments of the present application further provide a display device, referring to Fig.12 , Fig.12 The display device 100 includes the display panel described in the above embodiment of the present application, and the display device 100 can be any display device with display function, such as a touch screen, a mobile phone, a tablet computer, a laptop, an e-book or a television.

[0080] The display panel and its control method and display device provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0081] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0082] 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 "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device that includes a series of elements is inherent to the elements, or also includes elements inherent to these processes, methods, articles or devices. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0083] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that: The display panel comprises: at least one grayscale voltage chip and a voltage dividing component, wherein the grayscale voltage chip comprises a plurality of output channels; The first input end of the voltage divider component is electrically connected to the first output channel, and the second input end of the voltage divider component is electrically connected to the second output channel; when the number of the grayscale voltage chips is greater than or equal to two, the grayscale voltage chips to which the first output channel and the second output channel belong are the same or different; The voltage divider component is used to receive the first voltage output by the first output channel at the current moment through the first input terminal; receive the second voltage output by the second output channel at the current moment through the second input terminal; perform voltage division processing on the first voltage and the second voltage at the current moment, so as to output the target voltage at the current moment through its output terminal; The first voltage at the current moment is obtained by adjusting the first voltage output by the first output channel at the previous moment by a step voltage value, and the difference between the target voltage at the current moment and the target voltage at the previous moment is less than the step voltage value.

2. The display panel according to claim 1, characterized in that: The voltage dividing component comprises: a first resistor and a second resistor; The first end of the first resistor serves as the first input end, and the first end of the second resistor serves as the second input end; The second end of the first resistor is electrically connected to the second end of the second resistor, and the connection node serves as the output end.

3. The display panel according to claim 2, characterized in that: The first resistor and the second resistor have the same resistance value.

4. The display panel according to any one of claims 1 to 3, characterized in that: The difference between the first voltage at the last moment and the second voltage output by the second output channel at the last moment is not greater than 0.2V.

5. The display panel according to claim 1, characterized in that: In the case that the first output channel and the second output channel belong to the same grayscale voltage chip, the first output channel and the second output channel are two adjacent output channels of the grayscale voltage chip.

6. The display panel according to claim 1, characterized in that: In the case that the first output channel and the second output channel belong to different grayscale voltage chips, the second voltage output by the second output channel at the last moment is less than or equal to the voltage output by the target output channel at the last moment; The target output channel and the first output channel are adjacent output channels in the same grayscale voltage chip, and a voltage output by the target output channel at a previous moment is smaller than a first voltage output by the first output channel at a previous moment.

7. The display panel according to claim 6, characterized in that: The grayscale voltage chip includes a first grayscale voltage chip and a second grayscale voltage chip; the first grayscale voltage chip and the second grayscale voltage chip include N output channels, N is a positive integer, N≥2; The i-th output channel in the first grayscale voltage chip serves as the first output channel, and the i-th output channel or the i+1-th output channel in the second grayscale voltage chip serves as the second output channel, where i is a positive integer and 1≤i<N.

8. The display panel according to claim 1, characterized in that: The difference between the target voltage at the current moment and the target voltage at the previous moment is less than or equal to 7 mV.

9. A method for controlling a display panel, characterized in that: The control method of the display panel includes: Adjusting a first voltage output by the first output channel at a previous moment by a step voltage value to obtain a first voltage output by the first output channel at a current moment; The first output channel is controlled to output the first voltage at the current moment, and the second output channel is controlled to output the second voltage at the current moment, so as to achieve: The control voltage divider component receives the first voltage output by the first output channel at the current moment through the first input terminal; receives the second voltage output by the second output channel at the current moment through the second input terminal; performs voltage division processing on the first voltage and the second voltage at the current moment to output the target voltage at the current moment through its output terminal; wherein the difference between the target voltage at the current moment and the target voltage at the previous moment is less than the step voltage value.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1-8.

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