Display substrate and display device

Abstract

The invention provides a display substrate and a display device, belongs to the technical field of display, and can solve the problem that an existing display substrate is prone to causing crosstalk and other defects due to common electrode voltage disturbance. The display substrate comprises a substrate body, grid lines, data lines and pixel electrodes, wherein the grid lines and the data lines are located on the substrate body and arranged in a crossed mode, and the pixel electrodes are located in the crossed areas of the grid lines and the data lines. The pixel electrode is divided into a plurality of domain regions; in each domain region, a plurality of slits are formed in the pixel electrode; the extension directions of the slits in the adjacent domain regions are different; the display substrate further comprises a first common electrode wire and a second common electrode wire which are located on the substrate. The orthographic projection of the first common electrode wire on the substrate falls around the orthographic projection of the pixel electrode on the substrate; and the orthographic projection of the second common electrode wire on the substrate falls between the orthographic projections of different domain regions of the pixel electrode on the substrate.

Description

Technical Field

[0001] The present disclosure belongs to the field of display technology, and particularly relates to a display substrate and a display device. Background Art

[0002] With the rapid development of display technology, people's demand for large-size and high-resolution display panels has grown synchronously, and the requirements for the effect and quality of the display screen have gradually increased. In the design of Thin Film Transistor-Liquid Crystal Display (TFT-LCD), signal lines such as gate lines, data lines and common electrode lines are arranged in parallel or vertically with each other, and there is coupling pulling between them. For example, when the signals on the gate lines and data lines jump high and low, a large pull is generated on the common electrode line. This signal fluctuation is called common electrode voltage disturbance (Vcom ripple).

[0003] If the amplitude of the common electrode voltage disturbance reaches a certain level and the disturbance lasts longer than the row recoil time, it will affect the charging effect of the corresponding row, and its display brightness will be brighter or darker than other rows, causing crosstalk and other defects, affecting the display effect. Summary of the invention

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art, and provides a display substrate and a display device.

[0005] In a first aspect, an embodiment of the present disclosure provides a display substrate, the display substrate comprising: a base substrate, gate lines and data lines intersectingly arranged on the base substrate, and a pixel electrode located in an intersection area of ​​the gate lines and the data lines; the pixel electrode is divided into a plurality of domains; in each domain, the pixel electrode is formed with a plurality of slits; the slits in adjacent domains extend in different directions; the display substrate further comprises: a first common electrode line and a second common electrode line located on the base substrate;

[0006] The orthographic projection of the first common electrode line on the base substrate falls around the orthographic projection of the pixel electrode on the base substrate;

[0007] The orthographic projection of the second common electrode line on the base substrate falls between the orthographic projections of different domains of the pixel electrode on the base substrate.

[0008] In some embodiments, the first common electrode line includes: a plurality of first sub-common electrode lines; the plurality of first sub-common electrode lines are connected end to end;

[0009] The second common electrode lines include: a plurality of second sub-common electrode lines; the plurality of second sub-common electrode lines are cross-connected and are all connected to the first sub-common electrode lines.

[0010] In some embodiments, the display substrate further includes: an auxiliary common electrode block;

[0011] The orthographic projection of the auxiliary common electrode block on the base substrate falls on a corner of the orthographic projection of different domains of the pixel electrode on the base substrate.

[0012] In some embodiments, the auxiliary common electrode block, the first common electrode line and the second common electrode line are an integrally formed structure.

[0013] In some embodiments, the auxiliary common electrode block is in a triangular, square, sawtooth or circular shape.

[0014] In some embodiments, the first common electrode line includes: a plurality of first sub-common electrode lines; the plurality of first sub-common electrode lines are connected end to end;

[0015] The second common electrode lines include: a plurality of second sub-common electrode lines; the plurality of second sub-common electrode lines are cross-connected and some of the second sub-common electrode lines are connected to the first sub-common electrode lines, and some of the second sub-common electrode lines are disconnected from the first sub-common electrode lines and suspended.

[0016] In some embodiments, the first common electrode line includes: a plurality of first sub-common electrode lines; the plurality of first sub-common electrode lines are connected end to end;

[0017] The second common electrode lines include: a plurality of second sub-common electrode lines; the plurality of second sub-common electrode lines are cross-connected and are all disconnected from the first sub-common electrode lines and suspended.

[0018] In some embodiments, the first common electrode line includes: a plurality of first sub-common electrode lines; the plurality of first common electrode lines are disconnected and suspended;

[0019] The second common electrode lines include: a plurality of second sub-common electrode lines; the plurality of second sub-common electrode lines are cross-connected and are all disconnected from the first sub-common electrode lines and suspended.

[0020] In some embodiments, the display substrate has a driving side and a non-driving side opposite to the driving side; the first common electrode line includes: a plurality of first sub-common electrode lines; the second common electrode line includes: a plurality of second sub-common electrode lines;

[0021] In an area close to the driving side, a plurality of the first common electrode lines are disconnected and suspended, and a plurality of the second sub-common electrode lines are cross-connected and disconnected from the first sub-common electrode lines and suspended;

[0022] In a region close to the non-driving side, a plurality of the first sub-common electrode lines are connected end to end, and a plurality of the second sub-common electrode lines are cross-connected and are all connected to the first sub-common electrode lines.

[0023] In a second aspect, an embodiment of the present disclosure provides a display device, which includes a display substrate as provided above. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an exemplary display substrate.

[0025] Figure 2 A schematic structural diagram of a first display substrate provided in an embodiment of the present disclosure.

[0026] Figure 3 A schematic structural diagram of a second display substrate provided in an embodiment of the present disclosure.

[0027] Figure 4 A schematic structural diagram of a third display substrate provided in an embodiment of the present disclosure.

[0028] Figure 5 A schematic structural diagram of a fourth display substrate provided in an embodiment of the present disclosure.

[0029] Figure 6 A schematic structural diagram of a fifth display substrate provided in an embodiment of the present disclosure.

[0030] Figure 7 A schematic structural diagram of a sixth display substrate provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The components of the embodiments of the present disclosure generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the present disclosure for protection, but merely represents the selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present disclosure.

[0032] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantitative restrictions, but indicate that there is at least one. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0033] The "multiple or several" mentioned in this disclosure refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0034] There are many commonly used display modes for Thin Film Transistor-Liquid Crystal Display (TFT-LCD), such as Twisted Nematic (TN) display mode, Vertically Aligned (VA) display mode, Fringe Field Switching (FFS) display mode, and In-Plane Switching (IPS) display mode. Among them, the VA mode has better dark state performance and better contrast than other display modes, but it is prone to color deviation and other defects. The pixel electrode is often divided into multiple domains (Domains) to improve color deviation and other defects, such as 8 domains, 4 domains, etc. Usually, slits with different extension directions are formed in different domains of the pixel electrode. The liquid crystal molecules can have pre-tilt angles in different directions when no voltage is applied. After the voltage is applied, the liquid crystal layer can be divided into four liquid crystal micro-domains with different tilt directions. In this way, the display color deviation and other defects can be improved and the display effect can be improved.

[0035] Figure 1 is a schematic diagram of the structure of an exemplary display substrate, such as Figure 1As shown, the display substrate includes: a base substrate, a gate line 101 and a data line 102 arranged crosswise on the base substrate, and a pixel electrode 103 located in the intersection area of ​​the gate line 101 and the data line 102; the pixel electrode 103 is divided into a plurality of domains D; a plurality of slits S are formed on the pixel electrode 103 in each domain D; the extension directions of the slits S in adjacent domains D are different; the display substrate also includes: a first common electrode line 104; the first common electrode line 104 is arranged in a ring shape, and the orthographic projection of the first common electrode line 104 on the base substrate falls around the orthographic projection of the pixel electrode 103 on the base substrate, that is, the first common electrode 104 surrounds the pixel electrode 103.

[0036] exist Figure 1 In the display substrate shown, a thin film transistor T is also provided, and the scanning signal transmitted on the gate line 101 can control the conduction and cutoff of the thin film transistor T. Taking the thin film transistor T as an N-type transistor as an example, when the scanning signal transmitted on the gate line 101 is a high-level signal, the thin film transistor T is turned on, and the data signal transmitted on the data line 102 can be transmitted to the pixel electrode 103 through the thin film transistor T. At the same time, the first common electrode line 104 can transmit the common signal to the common electrode (not shown in the figure). An electric field is generated between the pixel electrode 13 and the common electrode to drive the liquid crystal molecules in the liquid crystal layer to deflect and realize the display function.

[0037] The scanning signal transmitted on the gate line 101 and the data signal transmitted on the data line 102 are both pulse signals, which are generally between -5V and 5V. The common electrode signal transmitted on the first common electrode line 104 is a constant voltage signal, which is generally between -2V and 0V.

[0038] Depend on Figure 1 It can be seen from the display substrate shown that the gate lines 101, the data lines 102 and the first common electrode lines 104 are arranged in parallel or vertically with each other, and there is coupling pulling between them. For example, when the signals on the gate lines 101 and the data lines 102 change from high to low, a large pulling is generated on the first common electrode lines 104, and this signal fluctuation is called common electrode voltage disturbance (Vcom ripple).

[0039] If the amplitude of the common electrode voltage disturbance reaches a certain level and the disturbance lasts longer than the row recoil time, it will affect the charging effect of the corresponding row, and its display brightness will be brighter or darker than other rows, causing crosstalk and other defects, affecting the display effect.

[0040] In order to solve at least one of the above-mentioned technical problems, the embodiments of the present disclosure provide a display substrate and a display device. The display substrate and the display device provided by the embodiments of the present disclosure will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] In a first aspect, an embodiment of the present disclosure provides a display substrate. Figure 2 A schematic diagram of the structure of a first display substrate provided in an embodiment of the present disclosure is shown in FIG. Figure 2 As shown, the display substrate includes: a base substrate, a gate line 101 and a data line 102 cross-arranged on the base substrate, and a pixel electrode 103 located in the intersection area of ​​the gate line 101 and the data line 102; the pixel electrode 103 is divided into a plurality of domains D; in each domain D, the pixel electrode 103 is formed with a plurality of slits S; the extension directions of the slits S in adjacent domains D are different; the display substrate also includes: a first common electrode line 104 and a second common electrode line 105 located on the base substrate; the orthographic projection of the first common electrode line 104 on the base substrate falls around the orthographic projection of the pixel electrode 103 on the base substrate; the orthographic projection of the second common electrode line 105 on the base substrate falls between the orthographic projections of different domains D of the pixel electrode 103 on the base substrate.

[0042] Figure 2 The display substrate shown is Figure 1 The display substrate shown differs in that Figure 1 In the display substrate shown, only the first common electrode line 104 surrounding the pixel electrode 103 is provided. The first common electrode line 104 has a small area and has a small electric field shielding effect on the scanning signal transmitted by the gate line 101 and the data signal transmitted by the data line 102. Figure 2 The display substrate shown can be regarded as Figure 1 On the basis of the display substrate shown, a second common electrode line 105 is added, and the orthographic projection of the second common electrode line 105 on the base substrate falls between the orthographic projections of different domains D of the pixel electrode 103 on the base substrate, that is, the second common electrode line 105 is arranged in the inter-domain dark area.

[0043] It should be noted here that Figure 1 and Figure 2 Each pixel electrode 103 in the display substrate shown is divided into 4 domains D, wherein the second common electrode line 105 is arranged in the dark area between the domains, and the second common electrode line 105 can be in the shape of a "cross". Of course, the pixel electrode 103 can also be divided into 2 domains D or 8 domains D according to actual needs, and the shape of the second common electrode line 105 will change accordingly. For example, the pixel electrode 103 is divided into 2 domains D, and the second common electrode line 105 is arranged in the dark area between the domains, and its shape can be in the shape of a "single". The implementation principle is similar to the above and will not be described in detail.

[0044] In the display substrate provided by the embodiment of the present disclosure, the first common electrode line 104 surrounds the pixel electrode 103, and the second common electrode line 104 is arranged in the inter-domain dark area. While avoiding blocking of light, the area of ​​the entire common electrode line (the first common electrode line 104 and the second common electrode line 105) can be increased, thereby improving the electric field shielding effect of the entire common electrode line, thereby effectively reducing the large pulling on the entire common electrode line when the signals on the gate line 101 and the data line 102 jump high and low, avoiding the occurrence of common electrode voltage disturbance, and further improving crosstalk and other defects, thereby improving the display effect.

[0045] In some embodiments, Figure 2 As shown, the first common electrode line 104 includes: multiple first sub-common electrode lines 1041; the multiple first sub-common electrode lines 1041 are connected end to end; the second common electrode line 105 includes: multiple second sub-common electrode lines 1051; the multiple second sub-common electrode lines 1051 are cross-connected and all connected to the first sub-common electrode lines 1041.

[0046] The first common electrode line 104 can be regarded as a plurality of first sub-common electrode lines 1041 surrounding the pixel electrode 103, such as two first sub-common electrode lines 1041 extending horizontally on the upper and lower sides of the pixel electrode 103, and two first sub-common electrode lines 1041 extending vertically on the left and right sides of the pixel electrode 103. The first sub-common electrode lines 1041 are connected end to end to form a ring structure surrounding the pixel electrode 103.

[0047] The second common electrode line 105 can be regarded as a plurality of second sub-common electrode lines 1051 cross-arranged in the inter-domain dark area, for example, a second sub-common electrode line 1051 extending transversely and a second sub-common electrode line 1051 extending longitudinally. The second sub-common electrode line 1051 extending transversely and the second sub-common electrode line 1051 extending longitudinally are connected together at the intersection position and can be in a "cross" shape.

[0048] At the same time, both ends of the second sub-common electrode line 1051 extending transversely are connected to the corresponding first sub-common electrode line 1041 , and both ends of the second sub-common electrode line 1051 extending longitudinally are connected to the corresponding first sub-common electrode line 1041 .

[0049] The first common electrode line 104 and the second common electrode line 105 are connected together, which can increase the area of ​​the entire common electrode line (the first common electrode line 104 and the second common electrode line 105), thereby improving the electric field shielding effect of the entire common electrode line, thereby effectively reducing the large pulling on the entire common electrode line when the signals on the gate line 101 and the data line 102 jump high and low, avoiding the common electrode voltage disturbance, and further improving crosstalk and other defects, thereby improving the display effect.

[0050] The first common electrode line 104 and the second common electrode line 105 can be made of the same material and formed by the same process to reduce process steps and save manufacturing costs, and at the same time reduce the connection resistance between the first common electrode line 104 and the second common electrode line 105 to avoid affecting the transmission of common electrode signals.

[0051] Figure 3 A schematic diagram of the structure of a second display substrate provided in an embodiment of the present disclosure is shown in FIG. Figure 3 As shown, the display substrate further includes: an auxiliary common electrode block 106; the orthographic projection of the auxiliary common electrode block 106 on the base substrate falls on the corner of the orthographic projection of different domains of the pixel electrode 103 on the base substrate.

[0052] The orthographic projection of the auxiliary common electrode block 106 on the substrate falls on the corners of the orthographic projections of different domains of the pixel electrode 103 on the substrate, that is, the auxiliary common electrode block 106 is arranged in the surrounding electric field dark area, while avoiding blocking of light, the area of ​​the overall common electrode line (the first common electrode line 104 and the second common electrode line 105) can be increased, thereby improving the electric field shielding effect of the overall common electrode line, thereby effectively reducing the large pulling on the overall common electrode line when the signals on the gate line 101 and the data line 102 jump high and low, avoiding the occurrence of common electrode voltage disturbance, and further improving crosstalk and other defects, thereby improving the display effect.

[0053] In some embodiments, Figure 3 As shown, the auxiliary common electrode block 106, the first common electrode line 104 and the second common electrode line 105 are an integrally formed structure.

[0054] The auxiliary common electrode block 106, the first common electrode line 104 and the second common electrode line 105 can be connected together and form an integral structure. The auxiliary common electrode block 106, the first common electrode line 104 and the second common electrode line 105 can be formed by the same material and the same process to reduce the process steps and save the preparation cost. At the same time, the connection resistance between the auxiliary common electrode block 106, the first common electrode line 104 and the second common electrode line 105 can be reduced to avoid the influence on the transmission of the common electrode signal.

[0055] The auxiliary common electrode block 106 may be in a triangular, square, sawtooth or circular shape. The shape of the auxiliary common electrode block 106 may be set according to actual needs, and will not be listed here one by one.

[0056] Figure 4 A schematic diagram of the structure of a third display substrate provided in an embodiment of the present disclosure, Figure 5 A schematic diagram of the structure of a fourth display substrate provided in an embodiment of the present disclosure, Figure 4 and Figure 5 As shown, the first common electrode line 104 includes: a plurality of first sub-common electrode lines 1041; the plurality of first sub-common electrode lines 1041 are connected end to end; the second common electrode line 105 includes: a plurality of second sub-common electrode lines 1051; the plurality of second sub-common electrode lines 1051 are cross-connected and some of the second sub-common electrode lines 1051 are connected to the first sub-common electrode lines 1041, and some of the second sub-common electrode lines 1051 are disconnected from the first sub-common electrode lines 1041 and are suspended.

[0057] Figure 4 and Figure 5 In the display substrate shown, the first common electrode line 104 can be regarded as a plurality of first sub-common electrode lines 1041 surrounding the pixel electrode 103, such as two first sub-common electrode lines 1041 extending horizontally on the upper and lower sides of the pixel electrode 103, and two first sub-common electrode lines 1041 extending vertically on the left and right sides of the pixel electrode 103. The first sub-common electrode lines 1041 are connected end to end to form a ring structure surrounding the pixel electrode 103.

[0058] The second common electrode line 105 can be regarded as a plurality of second sub-common electrode lines 1051 cross-arranged in the inter-domain dark area, for example, a second sub-common electrode line 1051 extending transversely and a second sub-common electrode line 1051 extending longitudinally. The second sub-common electrode line 1051 extending transversely and the second sub-common electrode line 1051 extending longitudinally are connected together at the intersection position and can be in a "cross" shape.

[0059] Figure 5 The display substrate shown is Figure 4 The display substrate shown differs in that Figure 4 In the display substrate shown, both ends of the second sub-common electrode line 1051 extending longitudinally are disconnected from the corresponding first sub-common electrode line 1041 and are suspended. Both ends of the second sub-common electrode line 1051 extending transversely are connected to the corresponding first sub-common electrode line 1041. Figure 5In the display substrate shown, both ends of the second sub-common electrode line 1051 extending longitudinally are connected to the corresponding first sub-common electrode line 1041, and both ends of the second sub-common electrode line 1051 extending transversely are disconnected from the corresponding first sub-common electrode line 1041 and are suspended.

[0060] exist Figure 4 and Figure 5 In the display substrate shown, the first common electrode line 104 surrounds the pixel electrode 103, and the second common electrode line 104 is arranged in the dark area between domains. While avoiding blocking of light, the area of ​​the overall common electrode line (the first common electrode line 104 and the second common electrode line 105) can be increased, thereby improving the electric field shielding effect of the overall common electrode line, thereby effectively reducing the large pulling on the overall common electrode line when the signals on the gate line 101 and the data line 102 jump high and low, avoiding the occurrence of common electrode voltage disturbance, and further improving crosstalk and other defects, thereby improving the display effect.

[0061] At the same time, part of the second sub-common electrode lines 1051 are disconnected from the first sub-common electrode lines 1041 and suspended, which can be regarded as adding different common electrode lines, that is, increasing the number of common electrode lines, which can improve the resistance uniformity of the overall common electrode lines in the display substrate, thereby ensuring the stability of common electrode signal transmission.

[0062] Figure 6 A schematic diagram of the structure of a fifth display substrate provided in an embodiment of the present disclosure is shown in FIG. Figure 6 As shown, the first common electrode line 104 includes: multiple first sub-common electrode lines 1041; multiple first common sub-electrode lines 1041 are connected end to end; the second common electrode line 105 includes: multiple second sub-common electrode lines 1051; multiple second sub-common electrode lines 1051 are cross-connected and are all disconnected from the first sub-common electrode lines 1041 and suspended.

[0063] Figure 6 The display substrate shown is Figure 4 and Figure 5 The display substrate shown differs in that Figure 4 In the display substrate shown, both ends of the second sub-common electrode line 1051 extending longitudinally are disconnected from the corresponding first sub-common electrode line 1041 and are suspended. Both ends of the second sub-common electrode line 1051 extending transversely are connected to the corresponding first sub-common electrode line 1041. Figure 5 In the display substrate shown, both ends of the second sub-common electrode line 1051 extending longitudinally are connected to the corresponding first sub-common electrode line 1041, and both ends of the second sub-common electrode line 1051 extending transversely are disconnected from the corresponding first sub-common electrode line 1041 and are suspended. Figure 6 In the display substrate shown, both ends of the second sub-common electrode line 1051 extending longitudinally are disconnected from the corresponding first sub-common electrode line 1041 and suspended, and both ends of the second sub-common electrode line 1051 extending transversely are disconnected from the corresponding first sub-common electrode line 1041 and suspended.

[0064] Figure 6 In the display substrate shown, the first common electrode line 104 surrounds the pixel electrode 103, and the second common electrode line 104 is arranged in the dark area between domains. While avoiding blocking of light, the area of ​​the overall common electrode line (the first common electrode line 104 and the second common electrode line 105) can be increased, thereby improving the electric field shielding effect of the overall common electrode line, thereby effectively reducing the large pulling on the overall common electrode line when the signals on the gate line 101 and the data line 102 jump high and low, avoiding the occurrence of common electrode voltage disturbance, and further improving crosstalk and other defects, thereby improving the display effect.

[0065] At the same time, all the second sub-common electrode lines 1051 are disconnected from the first sub-common electrode lines 1041 and suspended, which can be regarded as adding different common electrode lines, that is, increasing the number of common electrode lines, which can improve the resistance uniformity of the overall common electrode lines in the display substrate, thereby ensuring the stability of common electrode signal transmission.

[0066] Figure 7 A schematic diagram of the structure of a sixth display substrate provided in an embodiment of the present disclosure is shown in FIG. Figure 7 As shown, the first common electrode line 104 includes: multiple first sub-common electrode lines 1041; the multiple first common electrode lines 1041 are disconnected and suspended; the second common electrode line 105 includes: multiple second sub-common electrode lines 1051; the multiple second sub-common electrode lines 1051 are cross-connected and are all disconnected from the first sub-common electrode lines 1041 and suspended.

[0067] Figure 7 The display substrate shown is Figures 4 to 6 The display substrate shown differs in that Figure 4 In the display substrate shown, each first sub-common electrode line 1041 is connected end to end to form a ring structure surrounding the pixel electrode 103. Both ends of the second sub-common electrode line 1051 extending longitudinally are disconnected from and suspended from the corresponding first sub-common electrode line 1041. Both ends of the second sub-common electrode line 1051 extending transversely are connected to the corresponding first sub-common electrode line 1041. Figure 5In the display substrate shown, each first sub-common electrode line 1041 is connected end to end to form a ring structure surrounding the pixel electrode 103. Both ends of the second sub-common electrode line 1051 extending longitudinally are connected to the corresponding first sub-common electrode line 1041, and both ends of the second sub-common electrode line 1051 extending transversely are disconnected from the corresponding first sub-common electrode line 1041 and are suspended. Figure 6 In the display substrate shown, each first sub-common electrode line 1041 is connected end to end to form a ring structure surrounding the pixel electrode 103. Both ends of the second sub-common electrode line 1051 extending longitudinally are disconnected from the corresponding first sub-common electrode line 1041 and suspended, and both ends of the second sub-common electrode line 1051 extending transversely are disconnected from the corresponding first sub-common electrode line 1041 and suspended. Figure 7 In the display substrate shown, each first sub-common electrode line 1041 is disconnected and suspended, surrounding the pixel electrode 103. Both ends of the second sub-common electrode line 1051 extending longitudinally are disconnected from the corresponding first sub-common electrode line 1041 and suspended, and both ends of the second sub-common electrode line 1051 extending transversely are disconnected from the corresponding first sub-common electrode line 1041 and suspended.

[0068] Figure 7 In the display substrate shown, the first common electrode line 104 surrounds the pixel electrode 103, and the second common electrode line 104 is arranged in the dark area between domains. While avoiding blocking of light, the area of ​​the overall common electrode line (the first common electrode line 104 and the second common electrode line 105) can be increased, thereby improving the electric field shielding effect of the overall common electrode line, thereby effectively reducing the large pulling on the overall common electrode line when the signals on the gate line 101 and the data line 102 jump high and low, avoiding the occurrence of common electrode voltage disturbance, and further improving crosstalk and other defects, thereby improving the display effect.

[0069] At the same time, all the first sub-common electrode lines 1051 and all the second sub-common electrode lines 1051 are disconnected from the first sub-common electrode lines 1041 and suspended, which can be regarded as adding different common electrode lines, that is, increasing the number of common electrode lines, which can improve the resistance uniformity of the overall common electrode lines in the display substrate, thereby ensuring the stability of common electrode signal transmission.

[0070] In some embodiments, the display substrate has a driving side (not shown in the figure) and a non-driving side (not shown in the figure) opposite to the driving side; the first common electrode line 104 includes: a plurality of first sub-common electrode lines 1041; the second common electrode line 105 includes: a plurality of second sub-common electrode lines 1051; in an area close to the driving side, the plurality of first common electrode lines 1041 are disconnected and suspended, and the plurality of second sub-common electrode lines 1051 are cross-connected and are all disconnected from the first sub-common electrode lines 1041 and are suspended; in an area close to the non-driving side, the plurality of first sub-common electrode lines 1041 are connected end to end, and the plurality of second sub-common electrode lines 1051 are cross-connected and are all connected to the first sub-common electrode lines 1041.

[0071] The data line 102 in the display substrate is generally provided with a driving signal through a driving chip (not shown in the figure), and the data line 102 or the common electrode signal can be bound and connected to the driving chip through a binding pad (not shown in the figure), wherein the side provided with the binding pad is called the driving side, and the side opposite to the driving side is called the non-driving side. Due to the influence of the resistance-capacitance delay (RCDelay), the charging rate of the large-size display substrate on the driving side and the non-driving side is different.

[0072] In the area close to the driving side, multiple first common electrode lines 1041 are disconnected and suspended, multiple second sub-common electrode lines 1051 are cross-connected and disconnected from the first sub-common electrode lines 1041 and suspended, and in the area close to the non-driving side, multiple first sub-common electrode lines 1041 are connected end to end, and multiple second sub-common electrode lines 1051 are cross-connected and connected to the first sub-common electrode lines 1041. In this way, the resistance of the overall common electrode lines (first common electrode lines 104 and second common electrode lines 105) close to the non-driving side is reduced, so that the resistance of the overall common electrode lines close to the non-driving side is smaller than the resistance of the overall common electrode lines close to the driving side, thereby avoiding the influence of resistance-capacitance delay (RC Delay) and ensuring the charging rate of the display substrate close to the non-driving side, thereby improving the display effect.

[0073] In a second aspect, an embodiment of the present disclosure provides a display device, the display device includes a display substrate as provided in any of the above embodiments, and the display device can be, for example, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a vehicle-mounted device, or any other product with a display function. Other essential components of the display device should be understood by those skilled in the art, and will not be described in detail herein, nor should they be used as a limitation to the present disclosure.

[0074] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0075] In the several embodiments provided in the present disclosure, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the position of the components shown is only a logical functional position, and there may be other position arrangements in actual implementation.

[0076] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display substrate, characterized in that: The display substrate comprises: a base substrate, a gate line and a data line intersecting on the base substrate, and a pixel electrode located in the intersection area of ​​the gate line and the data line; the pixel electrode is divided into a plurality of domains; in each domain, the pixel electrode is formed with a plurality of slits; the slits in adjacent domains extend in different directions; the display substrate further comprises: a first common electrode line and a second common electrode line located on the base substrate; The orthographic projection of the first common electrode line on the base substrate falls around the orthographic projection of the pixel electrode on the base substrate; The orthographic projection of the second common electrode line on the base substrate falls between the orthographic projections of different domains of the pixel electrode on the base substrate.

2. The display substrate according to claim 1, characterized in that: The first common electrode line comprises: a plurality of first sub-common electrode lines; the plurality of first sub-common electrode lines are connected end to end; The second common electrode lines include: a plurality of second sub-common electrode lines; the plurality of second sub-common electrode lines are cross-connected and are all connected to the first sub-common electrode lines.

3. The display substrate according to claim 2, characterized in that: The display substrate further includes: an auxiliary common electrode block; The orthographic projection of the auxiliary common electrode block on the base substrate falls on a corner of the orthographic projection of different domains of the pixel electrode on the base substrate.

4. The display substrate according to claim 3, characterized in that: The auxiliary common electrode block, the first common electrode line and the second common electrode line are an integrated structure.

5. The display substrate according to claim 3, characterized in that: The auxiliary common electrode block has a shape of triangle, square, sawtooth or circle.

6. The display substrate according to claim 1, characterized in that: The first common electrode line comprises: a plurality of first sub-common electrode lines; the plurality of first sub-common electrode lines are connected end to end; The second common electrode lines include: a plurality of second sub-common electrode lines; the plurality of second sub-common electrode lines are cross-connected and some of the second sub-common electrode lines are connected to the first sub-common electrode lines, and some of the second sub-common electrode lines are disconnected from the first sub-common electrode lines and suspended.

7. The display substrate according to claim 1, characterized in that: The first common electrode line comprises: a plurality of first sub-common electrode lines; the plurality of first sub-common electrode lines are connected end to end; The second common electrode lines include: a plurality of second sub-common electrode lines; the plurality of second sub-common electrode lines are cross-connected and are all disconnected from the first sub-common electrode lines and suspended.

8. The display substrate according to claim 1, characterized in that: The first common electrode line comprises: a plurality of first sub-common electrode lines; the plurality of first common electrode lines are disconnected and suspended; The second common electrode lines include: a plurality of second sub-common electrode lines; the plurality of second sub-common electrode lines are cross-connected and are all disconnected from the first sub-common electrode lines and suspended.

9. The display substrate according to claim 1, characterized in that: The display substrate has a driving side and a non-driving side opposite to the driving side; The first common electrode line includes: a plurality of first sub-common electrode lines; the second common electrode line includes: a plurality of second sub-common electrode lines; In an area close to the driving side, a plurality of the first common electrode lines are disconnected and suspended, and a plurality of the second sub-common electrode lines are cross-connected and disconnected from the first sub-common electrode lines and suspended; In a region close to the non-driving side, a plurality of the first sub-common electrode lines are connected end to end, and a plurality of the second sub-common electrode lines are cross-connected and are all connected to the first sub-common electrode lines.

10. A display device, characterized in that: The display device comprises the display substrate according to any one of claims 1 to 9.

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