Array substrate, display panel and display device

Abstract

The invention provides an array substrate, a display panel and a display device. The array substrate comprises a first conducting layer and a second conducting layer which are sequentially arranged on one side of a substrate in a stacked mode. The first conductive layer comprises a data line, and the second conductive layer covers the data line. In the display stage, the second conductive layer serves as a shielding electrode and is loaded with shielding voltage. In the heating stage, the second conductive layer serves as a heating electrode, shielding voltage is loaded on one end of the second conductive layer, and array substrate side common voltage is loaded on the other end of the second conductive layer. According to the embodiment of the invention, the second conductive layer serving as the shielding electrode is reused as the heating electrode in the heating stage, and the array substrate side common voltage is loaded, so that additional heating electrodes and heating signals do not need to be added, the process is simpler, and the power consumption is lower; and secondly, the liquid crystal can be heated in a low-temperature environment, so that the display speed and the display quality of the display panel are improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an array substrate, a display panel and a display device. Background Art

[0002] Most liquid crystal displays (LCDs) are backlight type LCDs, which include a housing, a liquid crystal display panel disposed in the housing, and a backlight module in the housing. The LCD requires a light source provided by the backlight module to display light normally.

[0003] Usually, a liquid crystal display panel is made of two glass substrates (array glass and color filter glass) bonded together, and liquid crystal is poured between the two glass substrates. Pixel electrodes and common electrodes are set on the opposite inner sides of the two glass substrates. The voltage field strength is used to control the rotation direction of the liquid crystal to refract the light from the backlight module to produce a picture.

[0004] LCD has a large adhesion due to the characteristics of the liquid crystal molecules themselves. Due to its poor response speed, especially at low temperatures, its ghosting is more obvious, which seriously affects the display quality. Summary of the invention

[0005] The main technical problem solved by the present application is to provide an array substrate, a display panel and a display device to solve the problem of poor liquid crystal response speed in the prior art.

[0006] In order to solve the above technical problems, the first technical solution provided by the present application is: providing an array substrate, which includes a first conductive layer and a second conductive layer sequentially stacked on one side of a substrate;

[0007] The first conductive layer includes the data line, and the second conductive layer covers the data line;

[0008] In the display stage, the second conductive layer serves as a shielding electrode and is loaded with a shielding voltage;

[0009] In the heating stage, the second conductive layer serves as a heating electrode, one end of the second conductive layer is loaded with a shielding voltage, and the other end of the second conductive layer is loaded with a common voltage on the array substrate side.

[0010] Wherein, the array substrate further includes a first switch and a second switch;

[0011] A first end of the first switch is connected to a shielding voltage, a second end of the first switch is electrically connected to the second conductive layer, and a control end of the first switch is electrically connected to a first control signal;

[0012] A first end of the second switch is connected to the common voltage on the array substrate side, a second end of the second switch is electrically connected to the second conductive layer, and a control end of the second switch is electrically connected to the second control signal.

[0013] In the heating stage, both the first switch and the second switch are turned on, and the common voltage on the array substrate side is different from the shielding voltage.

[0014] The absolute value of the difference between the common voltage and the shielding voltage on the array substrate side is less than 4V.

[0015] in,

[0016] In the display stage, the first control signal and the second control signal are different control signals, and one of the first switch and the second switch is turned on;

[0017] or,

[0018] In the display stage, the first control signal and the second control signal are the same control signal, the first switch and the second switch are both turned on, and the shielding voltage is the same as the common voltage on the array substrate side.

[0019] There are multiple second conductive layers, which are spaced and insulated and work independently; each second conductive layer corresponds to a first switch and a second switch.

[0020] The array substrate further includes a third conductive layer, which is arranged on a side of the second conductive layer away from the substrate; the third conductive layer includes a pixel electrode.

[0021] In order to solve the above technical problem, the second technical solution provided by the present application is: to provide a display panel, which includes:

[0022] An array substrate, which is the above-mentioned array substrate;

[0023] A color filter substrate is arranged opposite to the array substrate;

[0024] The liquid crystal is located between the array substrate and the color filter substrate.

[0025] Wherein, the color filter substrate includes a common electrode layer, and the common electrode layer is loaded with a common voltage on the color filter substrate side;

[0026] In the display stage, the absolute value of the difference between the common voltage on the color filter substrate side and the shielding voltage is less than 2V, and the absolute value of the difference between the common voltage on the color filter substrate side and the common voltage on the array substrate side is less than 2V.

[0027] In order to solve the above technical problems, the third technical solution provided by the present application is: providing a display device, which includes a temperature sensing module and the above display panel;

[0028] The temperature sensing module is used to sense the working environment temperature of the liquid crystal.

[0029] Beneficial effects of the present application: Different from the prior art, the present application provides an array substrate, a display panel and a display device, wherein the array substrate includes a first conductive layer and a second conductive layer sequentially stacked on one side of a substrate. The first conductive layer includes a data line, and the second conductive layer covers the data line. In the display stage, the second conductive layer serves as a shielding electrode and is loaded with a shielding voltage. In the heating stage, the second conductive layer serves as a heating electrode, one end of the second conductive layer is loaded with a shielding voltage, and the other end is loaded with a common voltage on the array substrate side. In the embodiment of the present application, by multiplexing the second conductive layer as a shielding electrode as a heating electrode in the heating stage and loading the common voltage on the array substrate side, there is no need to add additional heating electrodes and heating signals, so the process is simpler and the power consumption is lower; secondly, the liquid crystal can also be heated in a low temperature environment to improve the display speed and display quality of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technical workers in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 is a structural diagram of an embodiment of an array substrate in the related art;

[0032] Figure 2 is a structural schematic diagram of an embodiment of an array substrate provided in an embodiment of the present application;

[0033] Figure 3 It is a schematic diagram of the circuit connection structure of a pixel electrode and a second conductive layer according to an embodiment of the present application;

[0034] Figure 4 is a schematic diagram of a circuit connection structure of another embodiment of a pixel electrode and a second conductive layer provided in an embodiment of the present application;

[0035] Figure 5 It is a structural schematic diagram of an embodiment of a second conductive layer and a control signal line provided in an embodiment of the present application;

[0036] Figure 6 is a schematic structural diagram of an embodiment of a display panel provided in an embodiment of the present application;

[0037] Figure 7 is a structural schematic diagram of a first embodiment of a display device provided in an embodiment of the present application;

[0038] Figure 8is a structural schematic diagram of a second embodiment of a display device provided in an embodiment of the present application;

[0039] Fig. 9 It is a structural schematic diagram of a third embodiment of a display device provided in an embodiment of the present application.

[0040] Description of Figure Numbers:

[0041] 100, array substrate; 101, display area; 10, substrate; 11, first conductive layer; 111, data line; 12, second conductive layer; 13, third conductive layer; 131, pixel electrode; T1, first switch; T2, second switch; T3, third switch; S1, first control signal; S2, second control signal; S-1 / S-2 / S-3 / S-4 / S-5 / S-6 / S-7 / S-8 / S-9, control signal line; Acom, common voltage on the array substrate side; CFcom, common voltage on the color film substrate side; DBScom, shielding voltage; 14, first insulating layer; 15, second insulating layer; 200, color film substrate; 201, base; 202, common electrode layer; 300, liquid crystal; 1, display panel; 2, temperature sensing module; 3, main board; 4, display device. DETAILED DESCRIPTION

[0042] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0043] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technical workers in the field without making creative work are within the scope of protection of this application.

[0045] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0046] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0047] See also Figures 1 to 4 , Figure 1 is a structural diagram of an embodiment of an array substrate in the related art, Figure 2 is a structural schematic diagram of an embodiment of an array substrate provided in an embodiment of the present application, Figure 3 is a schematic diagram of a circuit connection structure of a pixel electrode and a second conductive layer according to an embodiment of the present application, Figure 4 It is a schematic diagram of the circuit connection structure of another embodiment of the pixel electrode and the second conductive layer provided in the embodiment of the present application.

[0048] The present application provides an array substrate 100. The array substrate 100 includes a first conductive layer 11 and a second conductive layer 12 stacked in sequence on one side of a substrate 10. The first conductive layer 11 includes a data line 111, and the second conductive layer 12 covers the data line 111. In the display stage, the second conductive layer 12 serves as a shielding electrode and is loaded with a shielding voltage DBScom. In the heating stage, the second conductive layer 12 serves as a heating electrode, one end of the second conductive layer 12 is loaded with a shielding voltage DBScom, and the other end is loaded with an array substrate side common voltage Acom.

[0049] In the embodiment of the present application, the second conductive layer 12 used as the shielding electrode is reused as the heating electrode in the heating stage, and the common voltage Acom on the array substrate side is loaded, so there is no need to add additional heating electrodes and heating signals, so the process is simpler and the power consumption is lower; secondly, the liquid crystal 300 can also be heated in a low temperature environment (see Figure 6 ), thereby improving the display speed and display quality of the display panel 1.

[0050] The substrate 10 may be a hard substrate, such as glass, quartz, sapphire, etc.; the substrate 10 may also be a flexible substrate, such as polyimide (PI), polyethylene terephthalate (PET), etc. The material of the substrate 10 is not limited here and is selected according to actual needs. The substrate 10 is a transparent substrate.

[0051] In some embodiments, the array substrate 100 further includes a third conductive layer 13 , and the third conductive layer 13 is disposed on a side of the second conductive layer 12 away from the substrate 10 . The third conductive layer 13 includes a pixel electrode 131 .

[0052] In a direction perpendicular to the substrate 10 , the pixel electrode 131 and the data line 111 are staggered.

[0053] Exemplarily, in a direction parallel to the substrate 10 , the data line 111 is disposed on at least one side of the pixel electrode 131 , that is, the data line 111 is disposed at an edge of the pixel electrode 131 .

[0054] The third conductive layer 13 is a transparent conductive layer.

[0055] Exemplarily, the third conductive layer 13 may include at least one of indium tin oxide (ITO), aluminum zinc oxide (AZO), and zinc tin oxide (IZO).

[0056] The shape, size and arrangement of the pixel electrodes 131 are not limited here and can be selected according to actual needs.

[0057] Exemplarily, the pixel electrode 131 is rectangular.

[0058] The first conductive layer 11 is a metal layer. The material of the first conductive layer 11 is not limited here and can be selected according to actual needs.

[0059] The first conductive layer 11 also includes other wirings, which are not limited here and are selected according to actual needs.

[0060] The second conductive layer 12 is a transparent conductive layer.

[0061] For example, the second conductive layer 12 may include at least one of indium tin oxide (ITO), aluminum zinc oxide (AZO), and zinc tin oxide (IZO).

[0062] The materials of the second conductive layer 12 and the third conductive layer 13 may be the same or different, which is not limited here and is selected according to actual needs.

[0063] The second conductive layer 12 covers the data line 111, so that the liquid crystal 300 above the data line 111 is not deflected and presents a black state in the display stage, so that the portion of the second conductive layer 12 overlapping the data line 111 in the direction perpendicular to the substrate 10 can replace the black matrix for light shielding. That is, since the data line 111 is located at the edge of the pixel electrode 131, the data signal of the data line 111 is coupled with the pixel electrode 131, so a shielding electrode is provided above the data line 111 to weaken the coupling between the data line 111 and the pixel electrode 131.

[0064] The second conductive layer 12 is disposed close to the liquid crystal 300 , so that during the heating stage, the second conductive layer 12 can heat the liquid crystal 300 in a low temperature environment to increase the response speed of the liquid crystal 300 in a low temperature environment, thereby improving the display speed and display quality of the display panel 1 .

[0065] Compared with the related art, the shielding electrode is disposed in the same layer as the pixel electrode 131 and is located between the pixel electrodes 131. The second conductive layer 12 provided in the embodiment of the present application is located between the pixel electrode 131 and the first conductive layer 11, which can reduce the spacing between the pixel electrodes 131, thereby improving the pixel aperture ratio.

[0066] In some embodiments, the array substrate 100 further includes a first switch T1 and a second switch T2 .

[0067] A first end of the first switch T1 is connected to the shielding voltage DBScom, a second end of the first switch T1 is electrically connected to the second conductive layer 12 , and a control end of the first switch T1 is electrically connected to the first control signal S1 .

[0068] A first end of the second switch T2 is connected to the array substrate side common voltage Acom, a second end of the second switch T2 is electrically connected to the second conductive layer 12, and a control end of the second switch T2 is electrically connected to the second control signal S2.

[0069] There is no restriction on the conductivity types of the first switch T1 and the second switch T2, and they can be selected according to actual needs.

[0070] Exemplarily, the first switch T1 and the second switch T2 are both N-type transistors.

[0071] In other embodiments, the first switch T1 and the second switch T2 may be of other conductivity types, for example, the first switch T1 and the second switch T2 are both P-type transistors, or the conductivity type of the first switch T1 is different from the conductivity type of the second switch T2.

[0072] According to the magnitude relationship between the shielding voltage DBScom and the common voltage Acom on the array substrate side, it is determined whether the second conductive layer 12 is used as a shielding electrode or a heating electrode.

[0073] Specifically, when the shielding voltage DBScom is equal to the array substrate side common voltage Acom, or one of the shielding voltage DBScom and the array substrate side common voltage Acom is applied to the second conductive layer 12, the second conductive layer 12 serves as a shielding electrode. When the shielding voltage DBScom is not equal to the array substrate side common voltage Acom, the first switch T1, the second conductive layer 12 and the second switch T2 form a closed loop, and the second conductive layer 12 serves as a heating electrode.

[0074] The array substrate side common voltage Acom is a reference common voltage of the array substrate 100. The second conductive layer 12 as a shielding electrode is reused as a heating electrode in the heating stage and loaded with the array substrate side common voltage Acom, without adding additional heating electrodes and heating signals, the process is simpler and the power consumption is lower.

[0075] The voltage value of the common voltage Acom on the array substrate side is not a fixed value and is adjustable within a certain range.

[0076] In some embodiments, during the heating stage, the first switch T1 and the second switch T2 are both turned on, and the array substrate side common voltage Acom is different from the shielding voltage DBScom, so that the first switch T1, the second conductive layer 12, and the second switch T2 form a closed loop, and the second conductive layer 12 can be used as a heating electrode. Multiplexing the array substrate side common voltage Acom and the shielding voltage DBScom during the heating stage can reduce heating signals and reduce power consumption.

[0077] Furthermore, the absolute value of the difference between the common voltage Acom on the array substrate side and the shielding voltage DBScom is less than 4V, so as to reduce the influence on the brightness of the display panel 1 in the dark state.

[0078] Exemplarily, the array substrate side common voltage Acom is greater than the shielding voltage DBScom, and the difference between the array substrate side common voltage Acom and the shielding voltage DBScom is less than 4V.

[0079] In other embodiments, the array substrate side common voltage Acom may be smaller than the shielding voltage DBScom.

[0080] The shielding voltage DBScom is a non-fixed value and is adjustable within a certain range. It is only necessary to ensure that the absolute value of the difference between the common voltage Acom on the array substrate side and the shielding voltage DBScom is less than 4V.

[0081] Specifically, the voltage difference between the voltage on the second conductive layer 12 and the common voltage CFcom on the color filter substrate side is relatively large, and the liquid crystal 300 will rotate at the L0 gray scale, affecting the brightness in the dark state and reducing the contrast.

[0082] During the heating stage, the heating amount of the second conductive layer 12 can be achieved by changing the difference between the common voltage Acom on the array substrate side and the shielding voltage DBScom, or by adjusting the conduction time of the first switch T1 and the second switch T2. There is no limitation here and the selection is made according to actual needs.

[0083] Specifically, the greater the absolute value of the difference between the common voltage Acom and the shielding voltage DBScom on the array substrate side, the greater the heating amount of the second conductive layer 12. The longer the conduction time of the first switch T1 and the second switch T2, the greater the heating amount of the second conductive layer 12.

[0084] In some embodiments, Figure 3 As shown, in the display stage, the first control signal S1 and the second control signal S2 are different control signals, and one of the first switch T1 and the second switch T2 is turned on.

[0085] Specifically, when the first switch T1 is turned on and the second switch T2 is turned off, the shielding voltage DBScom is applied to the second conductive layer 12 via the first switch T1. When the second switch T2 is turned on and the first switch T1 is turned off, the array substrate side common voltage Acom is applied to the second conductive layer 12 via the second switch T2. The specific values ​​of the shielding voltage DBScom and the array substrate side common voltage Acom are not limited here and are selected according to actual needs.

[0086] In other embodiments, Figure 4 As shown, in the display stage, the first control signal S1 and the second control signal S2 are the same control signal, the first switch T1 and the second switch T2 are both turned on, and the shielding voltage DBScom is the same as the common voltage Acom on the array substrate side.

[0087] Specifically, the first switch T1 and the second switch T2 have the same conductivity type, and the first switch T1 and the second switch T2 are turned on or off at the same time. The specific values ​​of the shielding voltage DBScom and the array substrate side common voltage Acom are not limited here and are selected according to actual needs.

[0088] The first switch T1 and the second switch T2 share the same control signal, which can simplify the process.

[0089] In some embodiments, Figure 2 As shown, the second conductive layer 12 is a whole layer structure, so as to evenly heat the liquid crystal 300 .

[0090] Specifically, the second conductive layer 12 covers the data line 111 located in the display area (not shown), and the heating amount of the second conductive layer 12 is selected according to the working environment temperature of the liquid crystal 300 to heat the liquid crystal 300 in a low temperature environment.

[0091] The thickness of the second conductive layer 12 is not limited here and can be selected according to actual needs.

[0092] See also Figures 1 to 5 , Figure 5 It is a structural schematic diagram of an embodiment of a second conductive layer and a control signal line provided in an embodiment of the present application.

[0093] In other embodiments, Figure 5 As shown, there are multiple second conductive layers 12, which are spaced and insulated and work independently. Each second conductive layer 12 corresponds to a first switch T1 and a second switch T2.

[0094] Exemplarily, there are 9 second conductive layers 12, each of which corresponds to a control signal line, and the control signal line is used to control the first switch T1 and the second switch T2 corresponding to the second conductive layer 12 to be turned on and off at the same time, that is, the control end of the first switch T1 and the control end of the second switch T2 are connected to the same control signal. S1-1 to S1-9 represent different control signal lines respectively.

[0095] There is no limitation on the number of the second conductive layers 12 , and the number can be selected according to actual needs.

[0096] Furthermore, the array substrate 100 has a plurality of display areas, and the display areas are arranged one-to-one correspondingly to the second conductive layers 12. By controlling the second conductive layer 12 to work separately, dynamic heating is achieved according to the actual displayed content of different display areas, which can reduce power consumption.

[0097] Specifically, the liquid crystal 300 corresponding to each display area is heated by the second conductive layer 12 corresponding to the display area, and the heating amounts of the liquid crystals 300 corresponding to different display areas may be the same or different.

[0098] The display area that displays dynamic images has a larger heating amount, and the corresponding liquid crystal 300 rotates faster, and the dynamic display effect is better; the display area that displays static images does not require a high response time, and the heating amount can be less, and local heating helps to reduce power consumption. For example, one display area displays a dynamic image, and another display area displays a static image. The heating amount of the display area that displays the dynamic image can be greater than the heating amount of the display area that displays the static image, thereby saving power consumption and improving the display effect.

[0099] Exemplarily, in the heating stage, the heating time of the second conductive layer 12 corresponding to the display area for displaying dynamic images is shorter than the heating time of the second conductive layer 12 corresponding to the display area for displaying static images; and / or the absolute value of the voltage difference between the two ends of the second conductive layer 12 corresponding to the display area for displaying dynamic images is greater than the absolute value of the voltage difference between the two ends of the second conductive layer 12 corresponding to the display area for displaying static images. The heating time of the second conductive layer 12 is determined by the conduction time of the first switch T1 and the second switch T2, and the voltage difference between the two ends of the second conductive layer 12 is the absolute value of the difference between the shielding voltage DBScom and the common voltage Acom on the array substrate side.

[0100] The shapes of the second conductive layers 12 may be different, and / or the sizes of the second conductive layers 12 may be different; or, the shapes and sizes of the second conductive layers 12 may be the same. There is no restriction on the shapes and sizes of the multiple second conductive layers 12, and they are selected according to actual needs.

[0101] Exemplarily, the second conductive layers 12 are all rectangular in shape, and the sizes of the second conductive layers 12 are all equal.

[0102] In other embodiments, the shape of the second conductive layer 12 may be a regular shape such as a circle, a triangle, a parallelogram, a trapezoid, or an irregular shape.

[0103] There is no limitation on the arrangement of the plurality of second conductive layers 12 , and the arrangement can be selected according to actual needs.

[0104] In some embodiments, the array substrate 100 further includes a third switch T3 and a scan line. In a direction parallel to the substrate 10, the data lines 111 and the scan lines crisscross to define an area where the pixel electrode 131 is located.

[0105] Exemplarily, one end of the third switch T3 is electrically connected to the data line 111, the other end of the third switch T3 is electrically connected to the pixel electrode 131, and the control end of the third switch T3 is electrically connected to the scan line. The data voltage provided by the data line 111 charges the pixel electrode 131 through the third switch T3 to achieve display.

[0106] In some embodiments, the array substrate 100 further includes a first insulating layer 14 and a second insulating layer 15. The first insulating layer 14 is disposed between the first conductive layer 11 and the second conductive layer 12, and the second insulating layer 15 is disposed between the second conductive layer 12 and the third conductive layer 13.

[0107] The materials of the first insulating layer 14 and the second insulating layer 15 are not limited here and can be selected according to actual needs.

[0108] See also Figures 1 to 6 , Figure 6 It is a schematic structural diagram of an embodiment of a display panel provided in an embodiment of the present application.

[0109] A display panel 1 includes an array substrate 100, a color filter substrate 200 and a liquid crystal 300. The array substrate 100 is the above-mentioned array substrate 100. The color filter substrate 200 is arranged opposite to the array substrate 100. The liquid crystal 300 is located between the array substrate 100 and the color filter substrate 200.

[0110] In some embodiments, the color filter substrate 200 includes a common electrode layer 202 , and the common electrode layer 202 is loaded with a color filter substrate side common voltage CFcom.

[0111] The common electrode layer 202 is a transparent conductive layer. The material of the common electrode layer 202 is not limited and can be selected according to actual needs.

[0112] The color filter substrate side common voltage CFcom is a reference common voltage of the color filter substrate 200 .

[0113] The value of the common voltage CFcom on the color filter substrate side is not a fixed value and is adjustable within a certain range.

[0114] The color filter substrate 200 further includes a base 201 . The base 201 is located on a side of the common electrode layer 202 away from the array substrate 100 .

[0115] The base 201 is a transparent substrate. The material of the base 201 can refer to the material of the substrate 10, and is not limited here, and can be selected according to actual needs.

[0116] An electric field is generated between the pixel electrode 131 and the common electrode layer 202 to control the deflection of the liquid crystal 300 between the pixel electrode 131 and the common electrode layer 202. By controlling the intensity of the electric field, the degree of arrangement of the liquid crystal 300 can be adjusted, thereby controlling the amount of light transmission. By controlling the voltage difference between each pixel electrode 131 and the common electrode layer 202, the brightness of the pixel corresponding to each pixel electrode 131 can be accurately controlled, thereby forming a desired image.

[0117] In some embodiments, during the display stage, the absolute value of the difference between the common voltage CFcom on the color film substrate side and the shielding voltage DBScom is less than 2V, and the absolute value of the difference between the common voltage CFcom on the color film substrate side and the common voltage Acom on the array substrate side is less than 2V, so that the absolute value of the difference between the shielding voltage DBScom and the common voltage Acom on the array substrate side is less than 4V.

[0118] Specifically, the difference between the shielding voltage DBScom and the common voltage Acom on the array substrate is large, and the liquid crystal 300 will rotate under the L0 grayscale, affecting the brightness in the dark state and reducing the contrast. Secondly, the difference between the common voltage CFcom on the color filter substrate and the common voltage Acom on the array substrate is too large, which will also cause the liquid crystal 300 to react inconsistently when switching states, resulting in afterimages, and cause the response time of the liquid crystal 300 to become longer, affecting the display effect of dynamic images.

[0119] The embodiment of the present application limits the relationship between the common voltage CFcom on the color filter substrate side, the shielding voltage DBScom, and the common voltage Acom on the array substrate side to improve the contrast and the display effect of dynamic images.

[0120] In some embodiments, during the display stage, the common voltage Acom on the array substrate side is greater than the common voltage CFcom on the color film substrate side. When the first switch T1 and the second switch T2 are turned on, the voltage on the second conductive layer 12 is controlled to be slightly higher than the common voltage CFcom on the color film substrate side. This can achieve a higher starting voltage for the pixel electrode 131 and a faster response at startup.

[0121] See also Figures 1 to 9 , Figure 7 is a schematic structural diagram of a first embodiment of a display device provided in an embodiment of the present application, Figure 8 is a schematic structural diagram of a second embodiment of a display device provided in an embodiment of the present application, Fig. 9 It is a structural schematic diagram of a third embodiment of a display device provided in an embodiment of the present application.

[0122] A display device 4 includes a temperature sensing module 2 and the above-mentioned display panel 1. The temperature sensing module 2 is used to sense the working environment temperature of the liquid crystal 300.

[0123] When the temperature sensing module 2 senses that the working environment temperature of the liquid crystal 300 is lower than the preset temperature, the first switch T1 and the second switch T2 are controlled to be turned on, and the shielding voltage DBScom is different from the common voltage Acom on the array substrate side, so as to heat the liquid crystal 300 .

[0124] In some embodiments, when the temperature sensing module 2 senses that the working environment temperature of the liquid crystal 300 is greater than or equal to the preset temperature, the shielding voltage DBScom is adjusted to be the same as the common voltage Acom on the array substrate side to stop heating, and the specific value of the shielding voltage DBScom is selected according to actual needs.

[0125] Exemplarily, when the temperature sensing module 2 senses that the working environment temperature of the liquid crystal 300 is greater than or equal to the preset temperature, the first switch T1 and the second switch T2 are controlled to be turned on, and the shielding voltage DBScom is made the same as the common voltage Acom on the array substrate side, so that the second conductive layer 12 acts as a shielding electrode and stops heating.

[0126] In other embodiments, when the temperature sensing module 2 senses that the working environment temperature of the liquid crystal 300 is greater than or equal to a preset temperature, the first switch T1 or the second switch T2 is selectively turned on to stop heating, and a suitable shielding voltage DBScom or an array substrate side common voltage Acom is selected according to actual needs.

[0127] Exemplarily, when the temperature sensing module 2 senses that the working environment temperature of the liquid crystal 300 is greater than or equal to the preset temperature, the first switch T1 is controlled to be turned on and the second switch T2 is controlled to be turned off, and the shielding voltage DBScom is applied to the second conductive layer 12, and a specific value of the shielding voltage DBScom is selected according to actual needs; or, when the temperature sensing module 2 senses that the working environment temperature of the liquid crystal 300 is greater than or equal to the preset temperature, the first switch T1 is controlled to be turned off and the second switch T2 is controlled to be turned on, and the common voltage Acom on the array substrate side is applied to the second conductive layer 12, and a specific value of the common voltage Acom on the array substrate side is selected according to actual needs.

[0128] There is no limit on the value of the preset temperature here, and you can choose it according to actual needs.

[0129] In some embodiments, the display device 4 further includes a mainboard 3 , and the mainboard 3 is electrically connected to the display panel 1 .

[0130] The mainboard 3 is the core of the entire display device 4 and is responsible for coordinating and controlling various functions of the display panel 1 .

[0131] In some embodiments, Figure 7 As shown, the temperature sensing module 2 is disposed in the display panel 1 .

[0132] In other embodiments, Figure 8 As shown, the temperature sensing module 2 is disposed in the main board 3 .

[0133] In some other embodiments, Fig. 9 As shown, the temperature sensing module 2 is arranged independently from the display panel 1 and the main board 3 .

[0134] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0135] The above are only implementation methods of the present application, and are not intended to limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An array substrate, characterized in that: It includes a first conductive layer and a second conductive layer which are sequentially stacked on one side of a substrate; The first conductive layer includes a data line, and the second conductive layer covers the data line; In the display stage, the second conductive layer serves as a shielding electrode and is loaded with a shielding voltage; In the heating stage, the second conductive layer serves as a heating electrode, one end of the second conductive layer is loaded with a shielding voltage, and the other end of the second conductive layer is loaded with a common voltage on the array substrate side.

2. The array substrate according to claim 1, characterized in that: The array substrate further includes a first switch and a second switch; A first end of the first switch is connected to a shielding voltage, a second end of the first switch is electrically connected to the second conductive layer, and a control end of the first switch is electrically connected to a first control signal; A first end of the second switch is connected to a common voltage on the array substrate side, a second end of the second switch is electrically connected to the second conductive layer, and a control end of the second switch is electrically connected to a second control signal.

3. The array substrate according to claim 2, characterized in that: In the heating stage, the first switch and the second switch are both turned on, and the common voltage on the array substrate side is different from the shielding voltage.

4. The array substrate according to claim 3, characterized in that: An absolute value of a difference between the common voltage on the array substrate side and the shielding voltage is less than 4V.

5. The array substrate according to claim 3, characterized in that: In the display stage, the first control signal and the second control signal are different control signals, and one of the first switch and the second switch is turned on; or, In the display stage, the first control signal and the second control signal are the same control signal, the first switch and the second switch are both turned on, and the shielding voltage is the same as the common voltage on the array substrate side.

6. The array substrate according to claim 2, characterized in that: There are multiple second conductive layers, which are spaced apart and insulated from each other and work independently; each second conductive layer corresponds to one first switch and one second switch.

7. The array substrate according to claim 1, characterized in that: The array substrate further includes a third conductive layer, which is disposed on a side of the second conductive layer away from the substrate; the third conductive layer includes a pixel electrode.

8. A display panel, characterized in that: include: An array substrate, which is the array substrate according to any one of claims 1 to 7; A color filter substrate, arranged opposite to the array substrate; The liquid crystal is located between the array substrate and the color film substrate.

9. The display panel according to claim 8, characterized in that: The color filter substrate comprises a common electrode layer, and the common electrode layer is loaded with a common voltage on the color filter substrate side; In the display stage, the absolute value of the difference between the common voltage on the color filter substrate side and the shielding voltage is less than 2V, and the absolute value of the difference between the common voltage on the color filter substrate side and the common voltage on the array substrate side is less than 2V.

10. A display device, characterized in that: A display panel comprising a temperature sensing module and any one of claims 8 and 9; The temperature sensing module is used to sense the working environment temperature of the liquid crystal.

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