A display panel and its control method, and a display device.

Abstract

This invention provides a display panel and its control method and display device, relating to the field of display technology. The minimum voltage change during liquid crystal driving voltage switching is limited by the minimum settable value of the grayscale voltage chip. By setting a voltage divider component, the two output channels of the grayscale voltage chip are merged into a new output channel. This new output channel is the output channel corresponding to the output terminal of the voltage divider component. At this time, the minimum voltage change during liquid crystal driving voltage switching is the difference between the target voltage at the current moment and the target voltage at the previous moment. This difference is less than the step voltage value used by the grayscale voltage chip to adjust the voltage of its own output channel. Compared with the prior art, without changing the minimum settable value of the grayscale voltage chip, the minimum step value for liquid crystal driving voltage switching is reduced, lowering the risk of brightness differences perceptible to the human eye during liquid crystal driving voltage switching, thereby improving the display effect of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel and its control method and display device. Background Technology

[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 a display device, the design of the display panel directly or indirectly affects the display effect of the device.

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

[0004] In view of the above problems, this application provides a display panel and its control method and display device, thereby improving the display effect of the display panel. The specific solution is as follows:

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

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

[0007] The voltage divider component is used to receive a first voltage output by the first output channel at the current moment through the first input terminal; to receive a second voltage output by the second output channel at the current moment through the second input terminal; and to perform voltage divider 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. 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 this application provides a method for controlling a display panel, the method comprising:

[0010] The first voltage output by the first output channel at the previous moment is obtained by adjusting the first voltage output by the first output channel by a step voltage value at the current moment.

[0011] Controlling the first output channel to output the first voltage at the current moment, and controlling the second output channel to output the second voltage at the current moment, 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 divider 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 this application provides a display device, the display device including the display panel described above.

[0014] By employing the above technical solution, this application provides a display panel and its control method and display device. The minimum voltage change during liquid crystal driving voltage switching is limited by the minimum settable value of 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 terminal of the voltage divider component. At this time, the minimum voltage change during liquid crystal driving voltage switching is the difference between the target voltage at the current moment and the target voltage at the previous moment, and this difference is less than the step voltage value by which the grayscale voltage chip adjusts the voltage of its own output channel. Compared with the prior art, without changing the minimum settable value of the grayscale voltage chip (i.e., the step voltage value of the first voltage), the minimum step value of liquid crystal driving voltage switching is reduced, thereby reducing the voltage change accuracy of each liquid crystal driving voltage change. This reduces the risk of brightness differences perceptible to the human eye during liquid crystal driving voltage switching, thereby improving the display effect of the display panel. Attached Figure Description

[0015] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote 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 assembly provided in an embodiment of the present invention;

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

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

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

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

[0021] Figure 6 This is a schematic diagram illustrating the relationship between liquid crystal driving voltage and the rate of brightness change caused by voltage variation, provided in 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 yet another display panel provided in an embodiment of the present invention;

[0024] Figure 9 A schematic diagram of yet another display panel provided in an embodiment of the present invention;

[0025] Figure 10 A schematic diagram of yet another display panel provided in an embodiment of the present invention;

[0026] Figure 11 A flowchart illustrating a control method for a display panel provided in an embodiment of the present invention;

[0027] Figure 12 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0028] The embodiments of this application are described below with reference to the accompanying drawings. The terminology used in the implementation section of this application is only for explaining specific embodiments and is not intended to limit the application. Those skilled in the art will recognize that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] It should be noted that the directional terms appearing in this invention are based on the relative positional relationships shown in the accompanying drawings and should not be taken as absolute limitations on this application.

[0031] refer to Figure 1 , Figure 1 This is a schematic diagram of a voltage divider assembly provided in an embodiment of the present invention, with reference to... Figure 2 , Figure 2This is a schematic diagram of a display panel provided in an embodiment of the present invention, with reference to... Figure 3 , Figure 3 A schematic diagram of another display panel provided in an embodiment of the present invention, with reference to... Figure 4 , Figure 4 This is a schematic diagram of another display panel provided in an embodiment of the present invention. The display panel provided in this embodiment includes: at least one grayscale voltage chip Gamma-IC and a voltage divider component 11, wherein the grayscale voltage chip Gamma-IC includes multiple output channels. Figure 2 The above description uses an example of a display panel including a grayscale voltage chip, namely the first grayscale voltage chip Gamma-IC-1; as shown... Figure 3 and Figure 4 As shown, the example given is a display panel that includes two grayscale voltage chips, namely the first grayscale voltage chip Gamma-IC-1 and the 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 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 first output channel and the second output channel belong to the same grayscale voltage chip, Gamma-IC; Figure 4 As shown, the first output channel and the second output channel belong to different grayscale voltage chips (Gamma-IC).

[0033] Furthermore, the number of gamma-IC grayscale voltage chips included in the display panel can also be other numbers, see reference. Figure 5 , Figure 5 This is a schematic diagram of another display panel provided in an embodiment of the present invention. Taking a display panel comprising three grayscale voltage chips (Gamma-IC) as an example, 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; to receive the second voltage output by the second output channel at the current moment through the second input terminal; and to perform voltage divider 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.

[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. 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 this embodiment of the invention, the grayscale voltage chip Gamma-IC, which includes N output channels, is used as an example for illustration. Figure 2-Figure 5 As shown, the grayscale voltage chip Gamma-IC includes output channels out-1, out-2, ..., out-N. The voltage output of any two output channels is different, that is, the voltage output of output channel out-i is different from the voltage output of output channel out-(i+1), where 1≤i<N.

[0037] like Figure 3 As shown, the first output channel and the second output channel, which are electrically connected to the voltage divider component 11, belong to the same grayscale voltage chip Gamma-IC; in this embodiment of the invention, the example is taken that 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, which are electrically connected to the voltage divider component 11, belong to different grayscale voltage chips Gamma-IC. In this embodiment of the invention, one of the first output channels and the second output channel is the output channel on the first grayscale voltage chip Gamma-IC-1, and the other output channel is the output channel on the second grayscale voltage chip Gamma-IC-2, as an example for illustration.

[0039] In the process of this invention, it was discovered that the minimum voltage change during liquid crystal driving voltage switching is limited by the minimum settable value of the grayscale voltage chip Gamma-IC. This minimum settable value is the aforementioned step voltage value Vt for adjusting the first voltage. In other words, if the first voltage output by the grayscale voltage chip Gamma-IC at the previous moment was 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 if the liquid crystal driving voltage at the previous moment was V2, the liquid crystal driving voltage at the next moment will be V2 + Vt; in other words, the minimum step value for liquid crystal driving voltage switching is currently Vt.

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

[0041] The liquid crystal driving voltage is provided by a grayscale voltage chip. However, the minimum value that the grayscale voltage chip can be set to is currently about 13mV, and it cannot be lower than 13mV, i.e., Vt≈13mV. This causes a brightness difference that can be perceived by the human eye when the liquid crystal driving voltage is switched, which seriously affects the display effect of the display panel.

[0042] Based on this, in this embodiment of the invention, by setting a 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 terminal OUT of the voltage divider component 11. At this time, the minimum voltage change during liquid crystal driving voltage switching is the difference Vk between the target voltage at the current moment and the target voltage at the previous moment, and this difference Vk is less than the aforementioned step voltage value Vt, 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 for liquid crystal driving voltage switching changes from Vt to Vk. Compared with the prior art, without changing the minimum settable value of the grayscale voltage chip Gamma-IC, the minimum step value for liquid crystal driving voltage switching is reduced, thereby reducing the voltage change accuracy of each change in liquid crystal driving voltage, reducing the risk of brightness differences that can be perceived by the human eye during liquid crystal driving voltage switching, and thus 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. This ensures 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 exhibit brightness differences that are perceptible to the human eye, thereby maximizing the display effect of the display panel.

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

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

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

[0047] Specifically, in this embodiment of the 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, which is the first voltage V1 output by the first output channel at the previous moment 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 moment, the difference between the target voltage of the voltage divider component 11 at the current moment and the target voltage at the previous moment is VOUT2-VOUT1, that is, there exists a relationship Vk = VOUT2-VOUT1. It can be understood that the step value of the voltage output by the output terminal OUT of the voltage divider component 11 is Vk.

[0052]

[0053] Therefore, it can be seen that the minimum step value for switching the liquid crystal driving voltage changes from Vt to Vk. At this time, there is a relationship of Vk < Vt. Compared with the existing technology, without changing the minimum value that the grayscale voltage chip Gamma-IC can be set, the minimum step value for switching the liquid crystal driving voltage is reduced, thereby improving the accuracy of the liquid crystal driving voltage change. This reduces the risk of brightness differences that can be perceived by the human eye when switching the liquid crystal driving voltage, 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 variation accuracy of 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. At this time, Vk is less than 7mV, the brightness variation rate of the display panel is less than 3%, and the display panel will not exhibit brightness differences that are perceptible to the human eye, thereby maximizing the display effect of the display panel.

[0055] In an optional 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 not greater than 0.2V.

[0056] Specifically, in this embodiment of the invention, assuming that the first voltage output by the first output channel at the previous moment is V1 and the second voltage output by the second output channel is Va, then 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 the control 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 values ​​of the first resistor R1 and the second resistor R2 are small, in the case of 2Ω-3Ω, the current in the first resistor R1 and the second resistor R2 will be very large. Such a design will increase some power consumption and cause power loss of the display panel.

[0059] Therefore, when the voltage difference between V1 and Va is large, in order to reduce the power consumption of the display panel, the resistance values ​​of the first resistor R and the second resistor R2 will be set to be very large, for example, in the kiloohm range. However, the kiloohm range of the first resistor R1 and the second resistor R2 is equivalent to a large load. At this time, the current flowing to the output terminal OUT of the voltage divider component 11 will be very small, that is, the current that can flow out of the output terminal of the voltage divider component 11 will be very small, and the load-carrying capacity of the output terminal OUT of the voltage divider component 11 will be small. In other words, although the target voltage value 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 this embodiment of the 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 greater 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. This will not increase the additional power consumption, and 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 is made to... Figure 8 , Figure 8 This is a schematic diagram of another display panel provided in 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, such as Figure 8 As shown, the first and second output channels, which are electrically connected to the voltage divider component 11, belong to the same grayscale voltage chip, Gamma-IC. In this embodiment of the invention, the first grayscale voltage chip Gamma-IC-1, to which the first and second output channels belong, is used as an example for explanation. 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 voltage difference between two adjacent output channels of the same grayscale voltage chip Gamma-IC is less than 0.2V, in this embodiment of the invention, two adjacent output channels of the same grayscale voltage chip Gamma-IC are used as the first output channel and the second output channel, thereby merging them into a new output channel.

[0064] In an optional embodiment of the present invention, reference is made to... Figure 9 , Figure 9 This is a schematic diagram of another display panel provided in an embodiment of the present invention, with reference to... Figure 10 , Figure 10 This is a schematic diagram of another display panel provided in an embodiment of the present invention. When the grayscale voltage chips (Gamma-ICs) 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 the voltage output by the target output channel at the previous moment is less than the first voltage output by the first output channel at the previous moment.

[0066] It should be noted that in the embodiments of this application, the voltages output by the N output channels of the same grayscale voltage chip Gamma-IC are all different. Typically, 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 sequentially. In this embodiment, the example of the N output channels decreasing sequentially from the first output channel out-1 to the Nth output channel out-N will be used for illustration.

[0067] Specifically, in this embodiment of the 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 are the out-1 output channel 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, or the out-3 output channel of the first grayscale voltage chip Gamma-IC-1 can be used as the target output channel. In this embodiment of the invention, the out-3 output channel of the first grayscale voltage chip Gamma-IC-1 is used as an example for explanation.

[0068] Subsequently, 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 Figure 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, where N is a positive integer and N≥2.

[0070] It should be noted that, in the design process of different grayscale voltage chips (Gamma-ICs) in this application embodiment, the voltages output by the same output channel of different grayscale voltage chips (Gamma-ICs) can 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) may be 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) may be 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 such 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 no greater than 0.2V; obviously, it can also be designed such 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 no greater than 0.2V.

[0071] Therefore, when the i-th output channel of the first grayscale voltage chip Gamma-IC-1 is selected as the first output channel, the i-th output channel of 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 not greater than 0.2V.

[0072] like Figure 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, where N is a positive integer and N≥2.

[0073] The i-th output channel of the first grayscale voltage chip Gamma-IC-1 is used as the first output channel, and the (i+1)-th output channel of the second grayscale voltage chip Gamma-IC-2 is used as the second output channel, where i is a positive integer and 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 not greater than 0.2V.

[0074] It should be noted that, in the embodiments 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, such as the output of two voltage divider components 11 being used as the input of another voltage divider component 11, etc.

[0075] Based on the above embodiments of the present invention, a method for controlling a display panel is also provided in another embodiment of the present invention, see reference. Figure 11 , Figure 11 This is a flowchart illustrating a control method for a display panel according to an embodiment of the present invention. The control method for a display panel provided in this embodiment of the present invention includes:

[0076] S101: Adjust the first voltage output by the first output channel at the previous moment by a step voltage value to obtain the first voltage output by the first output channel at the 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 divider 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 for the display panel provided in the embodiments of the present invention is the same as the working principle of the display panel provided in the above embodiments, and will not be repeated here.

[0079] Based on the above embodiments of the present invention, correspondingly, this application also provides a display device, see reference. Figure 12 , Figure 12 This is a schematic diagram of a display device provided in an embodiment of the present invention. The display device 100 includes the display panel described in the above embodiments of this application. The display device 100 can be any display device with display function, such as a touch screen, mobile phone, tablet computer, laptop computer, e-reader, or television.

[0080] The above provides a detailed description of a display panel and its control method and display device provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

[0081] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0082] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that elements inherent to a process, method, article, or apparatus that comprises a list of elements, or elements inherent to such processes, methods, articles, or apparatus, are also included. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0083] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily 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 invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that, The display panel includes: at least one grayscale voltage chip and a voltage divider component, wherein the grayscale voltage chip includes multiple output channels; The first input terminal of the voltage divider component is electrically connected to the first output channel, and the second input terminal of the voltage divider component is electrically connected to the second output channel; when the number of grayscale voltage chips is greater than or equal to two, the grayscale voltage chips belonging to the first output channel and the second output channel may be the same or different; The voltage divider component is used to receive a first voltage output by the first output channel at the current moment through the first input terminal; to receive a second voltage output by the second output channel at the current moment through the second input terminal; and to perform voltage divider 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. 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 divider assembly includes: a first resistor and a second resistor; The first end of the first resistor serves as the first input terminal, and the first end of the second resistor serves as the second input terminal; 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 terminal.

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 1-3, characterized in that, 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 no greater than 0.2V.

5. The display panel according to claim 1, characterized in that, When the grayscale voltage chips to which the first output channel and the second output channel belong are the same, 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, When the grayscale voltage chips 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. The target output channel and the first output channel are adjacent output channels in the same grayscale voltage chip, and the voltage output by the target output channel at the previous moment is less than the first voltage output by the first output channel at the 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, where N is a positive integer and N≥2; The i-th output channel in the first grayscale voltage chip is used as the first output channel, and the i-th output channel or the (i+1)-th output channel in the second grayscale voltage chip is used 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 7mV.

9. A method for controlling a display panel, characterized in that, The control method for the display panel includes: The first voltage output by the first output channel at the previous moment is obtained by adjusting the first voltage output by the first output channel by a step voltage value at the current moment. Controlling the first output channel to output the first voltage at the current moment, and controlling the second output channel to output the second voltage at the current moment, to achieve: The voltage divider component includes a first input terminal and a second input terminal. The voltage divider component is controlled to receive a first voltage output by the first output channel at the current moment through the first input terminal; and to receive a second voltage output by the second output channel at the current moment through the second input terminal; and to perform voltage divider 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; 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 includes the display panel as described in any one of claims 1-8.

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