Display panel and display device

Abstract

The invention provides a display panel and a display device. According to the embodiment of the invention, the pixel unit is divided into the first sub-pixel unit and the second sub-pixel unit to obtain the multi-domain structure, and the image display brightness of the second sub-pixel unit in the same pixel unit is smaller than that of the first sub-pixel unit in the display stage, so that the effect of low color cast under a large viewing angle is achieved; meanwhile, the control unit is arranged to control the conduction degree of the discharging switch in the second sub-pixel unit so as to achieve two-way selection of normal display and black frame insertion display, the black frame insertion function can be achieved, the motion blur phenomenon can be improved, and the structure is simple and easy to design.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly to a display panel and a display device. Background Art

[0002] Multi-domain design is a technology used to improve the large viewing angle of products. By dividing the ITO (Indium tin oxide) region of pixel units into several domains during pixel design, the liquid crystals in one pixel unit face different directions when the pixel is aligned, thereby improving the visibility of the screen at various angles, that is, the large viewing angle. During display, different brightnesses are set between different domains to achieve the effect of low color shift at a large viewing angle.

[0003] However, when the display panel switches dynamic images, motion blur is likely to occur, which affects the dynamic display quality of LCDs (Liquid Crystal Displays). Summary of the Invention

[0004] The main technical problem to be solved by the present application is to provide a display panel and a display device, which solve the problem that motion blur easily occurs in the existing liquid crystal display panel.

[0005] To solve the above technical problem, the first technical solution provided by the present application is: to provide a display panel, which includes:

[0006] A gate line group;

[0007] Pixel units, including a first sub-pixel unit and a second sub-pixel unit; each pixel unit is coupled to a gate line group; both the first sub-pixel unit and the second sub-pixel unit include a discharge switch, and both display a black screen simultaneously through the corresponding discharge switch during the blanking period; the second sub-pixel unit further includes a control unit, one end of the control unit is connected to the control end of the discharge switch in the second sub-pixel unit, and the other end is coupled to the gate line group;

[0008] The control unit is used to control the conduction degree of the corresponding discharge switch, so that the display brightness of the second sub-pixel unit in the same pixel unit is less than that of the first sub-pixel unit during the display period, and to control the second sub-pixel unit to display a black screen during the blanking period.

[0009] Wherein, each gate line group includes a display gate line and a blanking gate line; the control unit is coupled to the display gate line and / or the blanking gate line in the corresponding gate line group;

[0010] Each pixel unit further includes a charging switch; in each pixel unit, the charging switch of the first sub-pixel unit and the charging switch of the second sub-pixel unit are coupled to the same display gate line, and the conductive types of the charging switches are the same;

[0011] The control end of the discharge switch in the first sub-pixel unit is coupled to one gate line in the corresponding gate line group.

[0012] Wherein, the control unit includes a first control switch and a second control switch;

[0013] In the second sub-pixel unit, one end of the first control switch is connected to the control end of the corresponding discharge switch, the other end of the first control switch is connected to one gate line in the gate line group, and the control end of the first control switch and the other end of the first control switch are connected to the same gate line; one end of the second control switch is connected to the control end of the corresponding discharge switch, the other end of the second control switch is connected to one gate line in the gate line group, and the control end of the second control switch and the other end of the second control switch are connected to the same gate line;

[0014] In the display stage, the first control switch controls the conduction degree of the corresponding discharge switch, so that the display brightness of the second sub-pixel unit in the same pixel unit is less than that of the first sub-pixel unit;

[0015] In the blanking stage, the second control switch controls the conduction degree of the corresponding discharge switch, so that the second sub-pixel unit displays a black screen;

[0016] In the second sub-pixel unit, the conduction degree of the discharge switch in the display stage is less than that in the blanking stage.

[0017] Wherein, in the second sub-pixel unit, the conductive types of the charging switch, the discharge switch, the first control switch and the second control switch are the same; the control end of the first control switch is connected to the display gate line, and the other end of the second control switch is connected to the blanking gate line.

[0018] Wherein, in the second sub-pixel unit, the channel width of the first control switch is less than that of the charging switch.

[0019] Wherein, the control unit further includes a third control switch, one end of the third control switch is connected to the control end of the corresponding discharge switch, the other end of the third control switch is connected to the corresponding blanking gate line, and the control end of the third control switch is connected to one end of the discharge switch in the second sub-pixel unit;

[0020] In the display stage, the third control switch and the first control switch cooperate to control the conduction degree of the corresponding discharge switch, so that the display brightness of the second sub-pixel unit in the same pixel unit is less than that of the first sub-pixel unit.

[0021] Among them, in the second sub-pixel unit, the charging switch and the third control switch have the same conductivity type.

[0022] Among them, within one frame of the picture, in the same gate line group, the triggering moment of the high potential of the black insertion gate line lags behind the triggering moment of the high potential of the display gate line, and the high potential period of the black insertion gate line and the high potential period of the display gate line are set at intervals in time sequence.

[0023] Among them, the display panel further includes data lines; the first sub-pixel unit and the second sub-pixel unit both further include pixel electrodes, pixel capacitors, storage capacitors, common electrodes on the array substrate side, and common electrodes on the color filter substrate side;

[0024] In each sub-pixel unit, one end of the charging switch is electrically connected to the data line, the other end of the charging switch is electrically connected to the pixel electrode, the control end of the charging switch is electrically connected to the display gate line, one end of the pixel capacitor is electrically connected to the pixel electrode, the other end of the pixel capacitor is electrically connected to the common electrode on the color filter substrate side, one end of the storage capacitor is electrically connected to the pixel electrode, the other end of the storage capacitor is electrically connected to the common electrode on the array substrate side, one end of the discharge switch is electrically connected to the pixel electrode, and the other end of the discharge switch is electrically connected to the common electrode on the array substrate side.

[0025] To solve the above technical problems, the second technical solution provided by this application is: to provide a display device, which includes a main board and the above-mentioned display panel.

[0026] The beneficial effects of this application: Different from the prior art, this application provides a display panel and a display device. The display panel includes a gate line group and pixel units. The pixel units include a first sub-pixel unit and a second sub-pixel unit. Each pixel unit is coupled to a gate line group. The first sub-pixel unit and the second sub-pixel unit both include discharge switches, and both display a black picture simultaneously in the black insertion stage through the corresponding discharge switches. The second sub-pixel unit further includes a control unit. One end of the control unit is connected to the control end of the discharge switch in the second sub-pixel unit, and the other end is coupled to the gate line group. The control unit is used to control the conduction degree of the corresponding discharge switch, so that the picture display brightness of the second sub-pixel unit in the same pixel unit is less than that of the first sub-pixel unit in the display stage, and to control the second sub-pixel unit to display a black picture in the black insertion stage. By dividing the pixel unit into a first sub-pixel unit and a second sub-pixel unit in the embodiment of this application, a multi-domain structure is obtained, and the picture display brightness of the second sub-pixel unit in the same pixel unit is less than that of the first sub-pixel unit in the display stage, achieving the effect of low color shift under a large viewing angle; at the same time, by setting the control unit to control the conduction degree of the discharge switch in the second sub-pixel unit to achieve two-way selection of normal display and black insertion display, not only can the black insertion function be realized to improve the motion blur phenomenon, but also the structure is simple and easy to design. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without any creative work, other drawings can be obtained based on these drawings.

[0028] Figure 1 It is a schematic structural diagram of the first embodiment of the display panel provided by the embodiment of the present application;

[0029] Figure 2 It is a timing diagram of the gate line group provided by the embodiment of the present application;

[0030] Figure 3 It is a schematic structural diagram of the second embodiment of the display panel provided by the embodiment of the present application;

[0031] Figure 4 It is a schematic structural diagram of the third embodiment of the display panel provided by the embodiment of the present application;

[0032] Figure 5 It is a schematic structural diagram of an embodiment of the display device provided by the embodiment of the present application.

[0033] Explanation of the Reference Numerals in the Drawings:

[0034] 100, display panel; 10, pixel unit; 10A, first sub-pixel unit; 10B, second sub-pixel unit; 110, sub-pixel unit; T1, charging switch; T2, discharging switch; T3, control unit; T3-1, first control switch; T3-2, second control switch; T3-3, third control switch; 11, pixel electrode; Clc, pixel capacitor; Cst, storage capacitor; A-com, common electrode on the array substrate side; CF-com, common electrode on the color filter substrate side; Gate, gate line group; Gate1 / Gate1-1 / Gate1-2 / Gate1-3 / Gate1-4 / Gate1-n, display gate line; Gate2 / Gate2-1 / Gate2-2 / Gate2-3 / Gate2-4 / Gate2-n, blanking gate line; Data, data line; 200, main board; 300, display device. Detailed Embodiments

[0035] The following will describe the solutions of the embodiments of the present application in detail with reference to the drawings of the specification.

[0036] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures, interfaces, and technologies are proposed in order to thoroughly understand the present application.

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0038] The terms "first", "second", and "third" in the present application are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include unlisted steps or units, or may optionally further include other steps or units inherent to these processes, methods, products, or devices.

[0039] Referring to "embodiments" herein means that specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0040] Please refer to FIGS. 1 to Figure 3 , Figure 1 is a schematic structural diagram of the first embodiment of the display panel provided by the present application, Figure 2 is a timing diagram of the gate line group provided by the embodiments of the present application, Figure 3 is a schematic structural diagram of the second embodiment of the display panel provided by the embodiments of the present application.

[0041] The present application provides a display panel 100. The display panel 100 includes a gate line group Gate and pixel units 10. Each pixel unit 10 includes a first sub-pixel unit 10A and a second sub-pixel unit 10B. Each pixel unit 10 is coupled to a gate line group Gate. Both the first sub-pixel unit 10A and the second sub-pixel unit 10B include a discharge switch T2, and both display a black screen simultaneously through the corresponding discharge switch T2 during the blanking period. The second sub-pixel unit 10B further includes a control unit T3. One end of the control unit T3 is connected to the control terminal of the discharge switch T2 in the second sub-pixel unit 10B, and the other end is coupled to the gate line group Gate. The control unit T3 is configured to control the conduction degree of the corresponding discharge switch T2, so that the display brightness of the second sub-pixel unit 10B in the same pixel unit 10 is less than that of the first sub-pixel unit 10A during the display period, and to control the second sub-pixel unit 10B to display a black screen during the blanking period.

[0042] In the embodiment of the present application, by dividing the pixel unit 10 into a first sub-pixel unit 10A and a second sub-pixel unit 10B, a multi-domain structure is obtained, and during the display period, the display brightness of the second sub-pixel unit 10B in the same pixel unit 10 is less than that of the first sub-pixel unit 10A, achieving the effect of low color shift at a large viewing angle; at the same time, by setting the control unit T3 to control the conduction degree of the discharge switch T2 in the second sub-pixel unit 10B to achieve two-way selection of normal display and blanking display, not only can the blanking function be realized to improve the motion blur phenomenon, but also the structure is simple and easy to design.

[0043] In the embodiment of the present application, the conduction degree of the discharge switch T2 refers to the magnitude of the current passing through the discharge switch T2 or the degree of its conductivity when the discharge switch T2 is in the conducting state (i.e., the gate voltage exceeds the threshold voltage).

[0044] Specifically, in the embodiment of the present application, the conduction degree of the discharge switch T2 is mainly controlled by controlling the voltage magnitude of the control terminal of the discharge switch T2. The higher the voltage of the control terminal of the discharge switch T2, the higher its conduction degree.

[0045] The pixel unit 10 includes a first sub-pixel unit 10A and a second sub-pixel unit 10B. It can be understood that the pixel unit 10 includes two sub-pixel units 110, and the two sub-pixel units 110 are the first sub-pixel unit 10A and the second sub-pixel unit 10B respectively.

[0046] Each first sub-pixel unit 10A is a multi-domain structure, and each second sub-pixel unit 10B is a multi-domain structure.

[0047] Specifically, in this embodiment, the sub-pixel units 110 are all of a 4-domain structure. That is, each pixel unit 10 is of an 8-domain structure. The specific structure of the 4-domain structure is not limited herein and can be selected according to actual requirements.

[0048] In this embodiment, within each pixel unit 10, the area of the first sub-pixel unit 10A is larger than the area of the second sub-pixel unit 10B. The ratio value of the area between the first sub-pixel unit 10A and the second sub-pixel unit 10B is not specifically limited herein and can be selected according to actual requirements.

[0049] Each pixel unit 10 is coupled to a gate line group Gate. The gate line group Gate is used to control the corresponding pixel unit 10 to display a black screen or a normal screen. The black screen and the normal screen in the embodiments of the present application are relative. The display screens of the sub-pixel units 110 are only the black screen and the normal screen, that is, the sub-pixel units 110 either display a normal screen or a black screen. The black screen is a fully black display screen.

[0050] In the display stage, the pixel unit 10 displays a normal screen, that is, the first sub-pixel unit 10A and the second sub-pixel unit 10B display a normal screen simultaneously.

[0051] In the black insertion stage, the pixel unit 10 displays a black screen, that is, the first sub-pixel unit 10A and the second sub-pixel unit 10B display a black screen simultaneously.

[0052] In some embodiments, each gate line group Gate includes a display gate line Gate1 and a black insertion gate line Gate2. The control unit T3 is coupled to the display gate line Gate1 and / or the black insertion gate line Gate2 in the corresponding gate line group Gate. Each pixel unit 10 further includes a charging switch T1. In each pixel unit 10, the charging switch T1 of the first sub-pixel unit 10A and the charging switch T1 of the second sub-pixel unit 10B are coupled to the same display gate line Gate1, and the conduction types of the charging switches T1 are the same. The control end of the discharge switch T2 in the first sub-pixel unit 10A is coupled to a gate line in the corresponding gate line group Gate.

[0053] In the display stage, the sub-pixel unit 110 is charged through the charging switch T1 to display a normal screen.

[0054] Exemplarily, the charging switches T1 are all N-type transistors. The type of the transistor is not limited herein and can be selected according to actual requirements.

[0055] The control terminal of the charging switch T1 is connected to the display gate line Gate1. By controlling the conduction state of the charging switch T1 of the two sub-pixel units 110 in the pixel unit 10 through the same display gate line Gate1, the number of display gate lines Gate1 can be reduced, which is beneficial to improving the pixel aperture ratio.

[0056] When the conduction type of the discharge switch T2 is the same as that of the charging switch T1 in the first sub-pixel unit 10A, the control terminal of the discharge switch T2 can be coupled to the blanking gate line Gate2 in the corresponding gate line group Gate.

[0057] When the conduction type of the discharge switch T2 is opposite to that of the charging switch T1 in the first sub-pixel unit 10A, the control terminal of the discharge switch T2 can be coupled to the display gate line Gate1 in the corresponding gate line group Gate.

[0058] Exemplarily, in the first sub-pixel unit 10A, the conduction type of the discharge switch T2 is the same as that of the charging switch T1, and the control terminal of the discharge switch T2 is coupled to the blanking gate line Gate2.

[0059] Such as Figure 2 As shown, in some embodiments, within one frame of the picture, in the same gate line group Gate, the triggering moment of the high potential of the blanking gate line Gate2 lags behind the triggering moment of the high potential of the display gate line Gate1, and the high potential period of the blanking gate line Gate2 and the high potential period of the display gate line Gate1 are set at intervals in time sequence. That is, in the same gate line group Gate, the display gate line Gate1 and the blanking gate line Gate2 are not turned on simultaneously.

[0060] Here, there is no limit to the time when the triggering moment of the high potential of the blanking gate line Gate2 lags behind the triggering moment of the high potential of the display gate line Gate1, and it is selected according to actual needs.

[0061] Within one frame of the picture, in each gate line group Gate, the triggering moment of the high potential of the blanking gate line Gate2 lags behind the triggering moment of the high potential of the display gate line Gate1, and the lag time is the same.

[0062] Exemplarily, the first display gate line Gate1 to the nth display gate line Gate1 are respectively represented as Gate1-1, Gate1-2, Gate1-3, Gate1-4... Gate1-n. The first blanking gate line Gate2 to the nth blanking gate line Gate2 are respectively represented as Gate2-1, Gate2-2, Gate2-3, Gate2-4... Gate2-n.

[0063] Gate1-1 and Gate2-1 are located in the same gate line group Gate. Gate1-2 and Gate2-2 are located in the same gate line group Gate, and so on. Gate1-n and Gate2-n are located in the same gate line group Gate.

[0064] In some embodiments, the display panel 100 further includes a data line Data. The first sub-pixel unit 10A and the second sub-pixel unit 10B both further include a pixel electrode 11, a pixel capacitor Clc, a storage capacitor Cst, a common electrode A-com on the array substrate side, and a common electrode CF-com on the color filter substrate side.

[0065] In each sub-pixel unit 110, one end of a charging switch T1 is electrically connected to the data line Data, the other end of the charging switch T1 is electrically connected to the pixel electrode 11, the control end of the charging switch T1 is electrically connected to the display gate line Gate1, one end of the pixel capacitor Clc is electrically connected to the pixel electrode 11, the other end of the pixel capacitor Clc is electrically connected to the common electrode CF-com on the color filter substrate side, one end of the storage capacitor Cst is electrically connected to the pixel electrode 11, the other end of the storage capacitor Cst is electrically connected to the common electrode A-com on the array substrate side, and one end of a discharging switch T2 is electrically connected to the pixel electrode 11, and the other end of the discharging switch T2 is electrically connected to the common electrode A-com on the array substrate side.

[0066] Specifically, the pixel electrodes 11 are provided in one-to-one correspondence with the sub-pixel units 110, the pixel capacitors Clc are provided in one-to-one correspondence with the sub-pixel units 110, and the storage capacitors Cst are provided in one-to-one correspondence with the sub-pixel units 110. The first sub-pixel unit 10A and the second sub-pixel unit 10B respectively correspond to different pixel electrodes 11, the first sub-pixel unit 10A and the second sub-pixel unit respectively correspond to different pixel capacitors Clc, and the first sub-pixel unit 10A and the second sub-pixel unit 10B respectively correspond to different storage capacitors Cst.

[0067] The common electrode A-com on the array substrate side can be controlled as a whole for the entire surface electrode or can be controlled in zones for the zoned electrodes, and there is no limitation here, and it is selected according to actual requirements. Similarly, the common electrode CF-com on the color filter substrate side can be a zoned electrode or can be an entire surface electrode, and there is no limitation here, and it is selected according to actual requirements.

[0068] A liquid crystal molecule (not shown in the figure) is disposed between each pixel electrode 11 and the common electrode CF-com on the color filter substrate side. When there is a potential difference between the pixel electrode 11 and the common electrode CF-com on the color filter substrate side at the corresponding position, an electric field will be generated, and this electric field will drive the corresponding liquid crystal molecule to deflect, so that the pixel unit 10 displays a normal picture. When the potentials of the pixel electrode 11 and the common electrode CF-com on the color filter substrate side at the corresponding position are the same, the corresponding liquid crystal molecule does not deflect, and the pixel unit 10 displays a black picture.

[0069] In each pixel unit 10, the first sub-pixel unit 10A and the second sub-pixel unit 10B can be arranged side by side along the extending direction of the gate line group Gate, or can be arranged side by side along the extending direction of the data line Data.

[0070] Exemplarily, in each pixel unit 10, the first sub-pixel unit 10A and the second sub-pixel unit 10B are arranged side by side along the extending direction of the data line Data, and are disposed on opposite sides of the corresponding gate line group Gate. In other embodiments, in each pixel unit 10, the first sub-pixel unit 10A and the second sub-pixel unit 10B are arranged side by side along the extending direction of the data line Data, and are located on the same side of the gate line group Gate.

[0071] In each pixel unit 10, the first sub-pixel unit 10A and the second sub-pixel unit 10B can be connected to the same data line Data, or can be connected to different data lines Data, which is related to the driving method of the pixel unit 10 and is not limited here, and is selected according to actual requirements.

[0072] Exemplarily, in each pixel unit 10, the first sub-pixel unit 10A and the second sub-pixel unit 10B are connected to the same data line Data.

[0073] In some embodiments, the control unit T3 includes a first control switch T3-1 and a second control switch T3-2. In the second sub-pixel unit 10B, one end of the first control switch T3-1 is connected to the control end of the corresponding discharge switch T2, the other end of the first control switch T3-1 is connected to a gate line in the gate line group Gate, and the control end of the first control switch T3-1 is connected to the same gate line as the other end of the first control switch T3-1. One end of the second control switch T3-2 is connected to the control end of the corresponding discharge switch T2, the other end of the second control switch T3-2 is connected to a gate line in the gate line group Gate, and the control end of the second control switch T3-2 is connected to the same gate line as the other end of the second control switch T3-2.

[0074] In the display stage, the first control switch T3-1 controls the conduction degree of the corresponding discharge switch T2, so that the display brightness of the second sub-pixel unit 10B in the same pixel unit 10 is less than that of the first sub-pixel unit 10A.

[0075] In the blanking stage, the second control switch T3-2 controls the conduction degree of the corresponding discharge switch T2, so that the second sub-pixel unit 10B displays a black screen.

[0076] In the second sub-pixel unit 10B, the conduction degree of the discharge switch T2 in the display stage is less than that of the discharge switch T2 in the blanking stage.

[0077] Each gate line group Gate includes two gate lines, which are the display gate line Gate1 and the blanking gate line Gate2 respectively.

[0078] In the display stage, in the first sub-pixel unit 10A, the charging switch T1 is turned on to charge the pixel electrode 11, the pixel capacitor Clc and the storage capacitor Cst, the discharge switch T2 is turned off, and the first sub-pixel unit 10A displays a normal screen; in the second sub-pixel unit 10B, the charging switch T1 is turned on to charge the pixel electrode 11, the pixel capacitor Clc and the storage capacitor Cst, the discharge switch T2 and the first control switch T3-1 are both turned on, the second control switch T3-2 is turned off, and the first control switch T3-1 controls the conduction degree of the discharge switch T2 so that the charging speed of the pixel electrode 11 in the second sub-pixel unit 10B is greater than its discharge speed, so that the second sub-pixel unit 10B displays a normal screen, and the display brightness of the second sub-pixel unit 10B is less than that of the first sub-pixel unit 10A, thus realizing 8-domain display.

[0079] In the blanking stage, in the first sub-pixel unit 10A, the charging switch T1 is turned off, the discharge switch T2 is turned on, and the first sub-pixel unit 10A displays a black screen; in the second sub-pixel unit 10B, the charging switch T1 and the first control switch T3-1 are both turned off, the discharge switch T2 and the second control switch T3-2 are turned on, and the second control switch T3-2 controls the conduction degree of the discharge switch T2 to discharge the pixel electrode 11 in the second sub-pixel unit 10B, so that the second sub-pixel unit 10B displays a black screen.

[0080] In this embodiment, the control end of the first control switch T3-1 is coupled to the gate line group Gate, and the control end of the second control switch T3-2 is coupled to the gate line group Gate. There is no need to add a new film layer and control signal, and the structure is simple and easy to design.

[0081] In some embodiments, in the second sub-pixel unit 10B, the charging switch T1, the discharging switch T2, the first control switch T3-1, and the second control switch T3-2 have the same conduction type. The control end of the first control switch T3-1 is connected to the display gate line Gate1, and the other end of the second control switch T3-2 is connected to the black insertion gate line Gate2.

[0082] In other embodiments, in the second sub-pixel unit 10B, the charging switch T1 and the discharging switch T2 have the same conduction type; the first control switch T3-1 has a conduction type opposite to that of the charging switch T1, and the control end of the first control switch T3-1 is connected to the black insertion gate line Gate2; and / or, the second control switch T3-2 has a conduction type opposite to that of the charging switch T1, and the control end of the second control switch T3-2 is connected to the display gate line Gate1.

[0083] Exemplarily, as Figure 3 shown, the first control switch T3-1 has a conduction type opposite to that of the charging switch T1, and the control end of the first control switch T3-1 is connected to the black insertion gate line Gate2; and the second control switch T3-2 has a conduction type opposite to that of the charging switch T1, and the control end of the second control switch T3-2 is connected to the display gate line Gate1.

[0084] In some embodiments, in the second sub-pixel unit 10B, the channel width of the first control switch T3-1 is smaller than the channel width of the charging switch T1. By designing the channel of the first control switch T3-1, the voltage transmitted to the control end of the discharging switch T2 through the first control switch T3-1 is smaller, so that the discharging switch T2 can be turned on, but the conduction degree is smaller, so that the charging speed of the pixel electrode 11 in the second sub-pixel unit 10B is greater than its discharging speed during the display stage.

[0085] Compared with the related art, by reducing the channel width of the discharging switch T2 to make the display brightness of the two sub-pixel units 110 in the same pixel unit 10 different, in this embodiment, the channel width of the first control switch T3-1 is reduced to control the conduction degree of the discharging switch T2 during the display stage, so that the two-way selection of normal display and black insertion display can be realized.

[0086] Please refer to Figures 1 to 4 , Figure 4 which is a schematic structural diagram of the third embodiment of the display panel provided by the embodiments of the present application.

[0087] In some other embodiments, the control unit T3 further includes a third control switch T3-3. One end of the third control switch T3-3 is connected to the control end of the corresponding discharge switch T2, the other end of the third control switch T3-3 is connected to the corresponding insertion black gate line Gate2, and the control end of the third control switch T3-3 is connected to one end of the discharge switch T2 in the second sub-pixel unit 10B.

[0088] In the display stage, the third control switch T3-3 and the first control switch T3-1 cooperate to control the conduction degree of the corresponding discharge switch T2, so that the display brightness of the second sub-pixel unit 10B in the same pixel unit 10 is less than the display brightness of the first sub-pixel unit 10A.

[0089] Exemplarily, the control end of the third control switch T3-3 is further connected to the common electrode A-com on the array substrate side. That is, the control end of the third control switch T3-3 is also connected between the storage capacitor Cst and the common electrode A-com on the array substrate side.

[0090] Specifically, in the display stage, in the first sub-pixel unit 10A, the charging switch T1 is turned on and the discharge switch T2 is turned off, and the first sub-pixel unit 10A displays a normal picture; in the second sub-pixel unit 10B, the charging switch T1 is turned on, and the discharge switch T2, the first control switch T3-1 and the third control switch T3-3 are all turned on, and the second control switch T3-2 is turned off. The display gate line Gate1 transmits voltage to the control end of the discharge switch T2 through the first control switch T3-1. At the same time, the third control switch T3-3 pulls down the voltage at the control end of the discharge switch T2 to control the conduction degree of the discharge switch T2 so that the charging speed of the pixel electrode 11 in the second sub-pixel unit 10B is greater than its discharge speed, so that the second sub-pixel unit 10B can display a normal picture, and the display brightness of the second sub-pixel unit 10B is less than the display brightness of the first sub-pixel unit 10A, thereby realizing 8-domain display.

[0091] In the insertion black stage, in the first sub-pixel unit 10A, the charging switch T1 is turned off and the discharge switch T2 is turned on, and the first sub-pixel unit 10A displays a black picture; in the second sub-pixel unit 10B, the charging switch T1 and the first control switch T3-1 are both turned off, and the discharge switch T2, the second control switch T3-2 and the third control switch T3-3 are all turned on. The voltages at both ends of the third control switch T3-3 are the same, and the second control switch T3-2 controls the conduction degree of the discharge switch T2 to discharge the pixel electrode 11 in the second sub-pixel unit 10B, so that the second sub-pixel unit 10B displays a black picture.

[0092] Before the display gate line Gate1 is turned off and the insertion blanking gate line Gate2 is turned on, the voltage at the control terminal of the discharge switch T2 can be released to the insertion blanking gate line Gate2 through the third control switch T3-3, which can reduce the charge residue.

[0093] In this embodiment, there is no need to specifically control the channel widths of the second control switch T3-2, the third control switch T3-3, and the discharge switch T2, which reduces the pressure of simulation and design process. The first control switch T3-1 and the third control switch T3-3 cooperate to control the voltage at the control terminal of the discharge switch T2, that is, to control the conduction degree of the discharge switch T2. The structure is simple and easy to design and operate. In addition, in this embodiment, the control terminal of the first control switch T3-1 is coupled to the gate line group Gate, the control terminal of the second control switch T3-2 is coupled to the gate line group Gate, and the control terminal of the third control switch T3-3 is connected to the other end of the discharge switch T2, without adding a new film layer and control signal, and the structure is simple.

[0094] In some embodiments, in the second sub-pixel unit 10B, the charging switch T1 and the third control switch T3-3 have the same conduction type, so that the third control switch T3-3 can be connected to the insertion blanking gate line Gate2, and the timing of the display gate line Gate1 and the insertion blanking gate line Gate2 is used to pull down the voltage at the control terminal of the corresponding discharge switch T2 during the display stage, so as to cooperate with the first control switch T3-1 to control the conduction degree of the discharge switch T2. The structure is simple and easy to design and operate.

[0095] Please refer to Figures 1 to 5 , Figure 5 which is a schematic structural diagram of an embodiment of a display device provided by an embodiment of the present application.

[0096] The display device 300 includes a main board 200 and the above-mentioned display panel 100. The main board 200 is electrically connected to the display panel 100, and the main board 200 is used to transmit various required signals to the display panel 100 to control the display panel 100 to display a picture. For example, the clock signal CK, the common voltage signal VSS, the power supply voltage signal VDD, etc. required by the circuit for driving the gate line, and the data signal required by the data line Data, etc.

[0097] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0098] The above are only the implementation manners of the present application, and do not limit the patent protection scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. A display panel, characterized in that: include: Gate line group; A pixel unit, comprising a first sub-pixel unit and a second sub-pixel unit; each of the pixel units is coupled to one of the gate line groups; The first sub-pixel unit and the second sub-pixel unit both include a discharge switch, and both display a black picture at the same time in the black insertion stage through the corresponding discharge switch; the second sub-pixel unit also includes a control unit, one end of the control unit is connected to the control end of the discharge switch in the second sub-pixel unit, and the other end is coupled to the gate line group; The control unit is used to control the conduction degree of the corresponding discharge switch so that the picture display brightness of the second sub-pixel unit in the same pixel unit is smaller than the picture display brightness of the first sub-pixel unit in the display stage, and control the second sub-pixel unit to display a black picture in the black insertion stage.

2. The display panel according to claim 1, characterized in that: Each of the gate line groups includes a display gate line and a black insertion gate line; the control unit is coupled to the display gate line and / or the black insertion gate line in the corresponding gate line group; Each of the pixel units further includes a charging switch; in each of the pixel units, the charging switch of the first sub-pixel unit and the charging switch of the second sub-pixel unit are coupled to the same display gate line, and the conductivity types of the charging switches are the same; The control end of the discharge switch in the first sub-pixel unit is coupled to a gate line in the corresponding gate line group.

3. The display panel according to claim 2, characterized in that: The control unit includes a first control switch and a second control switch; In the second sub-pixel unit, one end of the first control switch is connected to the control end corresponding to the discharge switch, the other end of the first control switch is connected to a gate line in the gate line group, and the control end of the first control switch and the other end of the first control switch are connected to the same gate line; One end of the second control switch is connected to the control end corresponding to the discharge switch, the other end of the second control switch is connected to a gate line in the gate line group, and the control end of the second control switch and the other end of the second control switch are connected to the same gate line; In the display stage, the first control switch controls the conduction degree of the corresponding discharge switch, so that the picture display brightness of the second sub-pixel unit in the same pixel unit is smaller than the picture display brightness of the first sub-pixel unit; In the black insertion stage, the second control switch controls the conduction degree of the corresponding discharge switch so that the second sub-pixel unit displays a black picture; In the second sub-pixel unit, the conduction degree of the discharge switch in the display stage is smaller than the conduction degree of the discharge switch in the black insertion stage.

4. The display panel according to claim 3, characterized in that: In the second sub-pixel unit, the charging switch, the discharging switch, the first control switch and the second control switch have the same conductivity type; the control end of the first control switch is connected to the display gate line, and the other end of the second control switch is connected to the black insertion gate line.

5. The display panel according to claim 3, characterized in that: In the second sub-pixel unit, a channel width of the first control switch is smaller than a channel width of the charging switch.

6. The display panel according to claim 3, characterized in that: The control unit further includes a third control switch, one end of the third control switch is connected to the control end of the corresponding discharge switch, the other end of the third control switch is connected to the corresponding black insertion gate line, and the control end of the third control switch is connected to one end of the discharge switch in the second sub-pixel unit; In the display stage, the third control switch cooperates with the first control switch to control the conduction degree of the corresponding discharge switch, so that the picture display brightness of the second sub-pixel unit in the same pixel unit is smaller than the picture display brightness of the first sub-pixel unit.

7. The display panel according to claim 6, characterized in that: In the second sub-pixel unit, the charging switch and the third control switch have the same conductivity type.

8. The display panel according to any one of claims 2 to 7, characterized in that: In one frame, in the same gate line group, the triggering moment of the high potential of the black insertion gate line lags behind the triggering moment of the high potential of the display gate line, and the high potential period of the black insertion gate line and the high potential period of the display gate line are set at intervals in time sequence.

9. The display panel according to claim 2, characterized in that: The display panel further includes a data line; the first sub-pixel unit and the second sub-pixel unit both include a pixel electrode, a pixel capacitor, a storage capacitor, a common electrode on the array substrate side, and a common electrode on the color filter substrate side; In each sub-pixel unit, one end of the charging switch is electrically connected to the data line, the other end of the charging switch is electrically connected to the pixel electrode, the control end of the charging switch is electrically connected to the display gate line, one end of the pixel capacitor is electrically connected to the pixel electrode, the other end of the pixel capacitor is electrically connected to the common electrode on the color film substrate side, one end of the storage capacitor is electrically connected to the pixel electrode, the other end of the storage capacitor is electrically connected to the common electrode on the array substrate side, one end of the discharge switch is electrically connected to the pixel electrode, and the other end of the discharge switch is electrically connected to the common electrode on the array substrate side.

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

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