Display substrate and display device

Abstract

The present disclosure provides a display substrate and a display device, and belongs to the technical field of display, which can solve the problem that the existing display substrate is prone to crosstalk and other problems due to common electrode voltage disturbance. The display substrate comprises a substrate, a gate line and a data line arranged in a cross manner on the substrate, and a pixel electrode in the cross region of the gate line and the data line. The pixel electrode is divided into multiple domains. In each domain, the pixel electrode is formed with multiple slits. The extension directions of the slits in adjacent domains are different. The display substrate further comprises a first common electrode line and a second common electrode line on the substrate. The orthogonal projection of the first common electrode line on the substrate falls around the orthogonal projection of the pixel electrode on the substrate. The orthogonal projection of the second common electrode line on the substrate falls between the orthogonal projections of the different domains of the pixel electrode on the substrate.

Description

Technical Field

[0001] This disclosure belongs to the field of display technology, specifically relating to a display substrate and a display device. Background Technology

[0002] With the rapid development of display technology, the demand for large-size, high-resolution display panels has grown accordingly, and the requirements for display image quality and performance 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 either parallel or perpendicular to each other, and there is coupling and pulling between them. For example, when the signal on the gate line and data line undergoes a high-low transition, it generates a significant pull on the common electrode line. This signal fluctuation is called the common electrode voltage ripple (Vcom ripple).

[0003] If the voltage disturbance of the common electrode reaches a certain level and the duration of the disturbance exceeds the row backflush time, it will affect the charging effect of the corresponding row. Its display brightness will be brighter or darker than other rows, which will cause crosstalk and other defects, affecting the display effect. Summary of the Invention

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

[0005] In a first aspect, embodiments of this disclosure provide a display substrate, the display substrate comprising: a substrate, gate lines and data lines intersecting on the substrate, and a pixel electrode located at the intersection region of the gate lines and the data lines; the pixel electrode is divided into multiple domain regions; within each domain region, the pixel electrode forms multiple slits; the slits in adjacent domain regions extend in different directions; the display substrate further comprises: a first common electrode line and a second common electrode line located on the substrate;

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

[0007] The orthographic projection of the second common electrode line on the substrate falls between the orthographic projections of the different domain regions of the pixel electrode on the 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 line includes: multiple second sub-common electrode lines; the multiple second sub-common electrode lines are cross-connected and all are connected to the first sub-common electrode line.

[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 substrate falls at the corner of the orthographic projection of the different domain regions of the pixel electrode on the substrate.

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

[0013] In some embodiments, the auxiliary common electrode block is triangular, square, serrated, or circular in 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 line includes: multiple second sub-common electrode lines; the multiple 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 line, while some of the second sub-common electrode lines are disconnected from the first sub-common electrode line and suspended.

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

[0017] The second common electrode line includes: multiple second sub-common electrode lines; the multiple second sub-common electrode lines are cross-connected and all disconnected from the first sub-common electrode line 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 line includes: multiple second sub-common electrode lines; the multiple second sub-common electrode lines are cross-connected and all disconnected from the first sub-common electrode line 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 the region near the driving side, multiple first common electrode lines are disconnected and suspended, and multiple second sub-common electrode lines are cross-connected and disconnected from the first sub-common electrode lines and suspended.

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

[0023] Secondly, embodiments of this disclosure provide a display device, the display device including the display substrate as described above. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an exemplary display substrate.

[0025] Figure 2 This is a schematic diagram of the structure of a first type of display substrate provided in an embodiment of this disclosure.

[0026] Figure 3 This is a schematic diagram of the structure of a second type of display substrate provided in an embodiment of this disclosure.

[0027] Figure 4 This is a schematic diagram of the structure of a third type of display substrate provided in an embodiment of this disclosure.

[0028] Figure 5 This is a schematic diagram of the structure of a fourth type of display substrate provided in an embodiment of this disclosure.

[0029] Figure 6 This is a schematic diagram of the structure of a fifth type of display substrate provided in an embodiment of this disclosure.

[0030] Figure 7 This is a schematic diagram of the structure of a sixth type of display substrate provided in an embodiment of this disclosure. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. The components of the embodiments of this disclosure described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely represents selected embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0032] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” or “including,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0033] In this disclosure, "multiple or several" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0034] Thin-film transistor liquid crystal displays (TFT-LCDs) have several commonly used display modes, such as twisted nematic (TN), vertically aligned (VA), fringe field switching (FFS), and in-plane switching (IPS). Among these, the VA mode offers better dark-state performance and contrast compared to other modes, but it is prone to defects such as color shift. To mitigate these defects, the pixel electrode is often divided into multiple domains, such as 8-domain or 4-domain configurations. Typically, slits with different extension directions are formed within different domains of the pixel electrode. When no voltage is applied, the liquid crystal molecules can have pretilt angles in different directions. After applying voltage, the liquid crystal layer is divided into four liquid crystal microdomains, each with a different tilt direction. This improves color shift and enhances the display effect.

[0035] Figure 1 This is a schematic diagram of an exemplary display substrate, such as... Figure 1As shown, the display substrate includes: a substrate, gate lines 101 and data lines 102 intersecting on the substrate, and a pixel electrode 103 located at the intersection of the gate lines 101 and data lines 102; the pixel electrode 103 is divided into multiple domain regions D; multiple slits S are formed in each domain region D; the slits S in adjacent domain regions D extend in different directions; the display substrate also includes: a first common electrode line 104; the first common electrode line 104 is arranged in a ring, and the orthographic projection of the first common electrode line 104 on the substrate falls around the orthographic projection of the pixel electrode 103 on the substrate, that is, the first common electrode 104 surrounds the pixel electrode 103.

[0036] exist Figure 1 The display substrate shown also includes a thin-film transistor (TFT) T. The scan signal transmitted on the gate line 101 can control the conduction and cutoff of the TFT T. Taking an N-type TFT T as an example, when the scan signal transmitted on the gate line 101 is a high-level signal, the TFT T is turned on, and the data signal transmitted on the data line 102 can be transmitted to the pixel electrode 103 through the TFT 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, thereby realizing the display function.

[0037] The scan 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 As can be seen from the display substrate shown, the signal lines, such as gate line 101, data line 102, and first common electrode line 104, are arranged either parallel or perpendicular to each other, and there is coupling and pulling between them. For example, when the signal on gate line 101 and data line 102 undergoes a high-low transition, it generates a large pull on the first common electrode line 104. This signal fluctuation is called common electrode voltage ripple.

[0039] If the voltage disturbance of the common electrode reaches a certain level and the duration of the disturbance exceeds the row backflush time, it will affect the charging effect of the corresponding row. Its display brightness will be brighter or darker than other rows, which will cause crosstalk and other defects, affecting the display effect.

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

[0041] In a first aspect, embodiments of this disclosure provide a display substrate, Figure 2 This is a schematic diagram of the structure of a first type of display substrate provided in an embodiment of this disclosure, as shown below. Figure 2 As shown, the display substrate includes: a substrate, gate lines 101 and data lines 102 intersecting on the substrate, and a pixel electrode 103 located at the intersection of the gate lines 101 and data lines 102; the pixel electrode 103 is divided into multiple domain regions D; within each domain region D, the pixel electrode 103 forms multiple slits S; the slits S in adjacent domain regions D extend in different directions; the display substrate also includes: a first common electrode line 104 and a second common electrode line 105 located on the substrate; the orthographic projection of the first common electrode line 104 on the substrate falls around the orthographic projection of the pixel electrode 103 on the substrate; the orthographic projection of the second common electrode line 105 on the substrate falls between the orthographic projections of different domain regions D of the pixel electrode 103 on the substrate.

[0042] Figure 2 The display substrate shown is Figure 1 The difference in the display substrate shown is that, Figure 1 In the display substrate shown, only a first common electrode line 104 surrounding the pixel electrode 103 is provided. The area of ​​the first common electrode line 104 is small, and its electric field shielding effect on the scanning signal transmitted by the gate line 101 and the data signal transmitted by the data line 102 is small. Figure 2 The display substrate shown can be considered as being in Figure 1 Based on the display substrate shown, a second common electrode line 105 is added. The orthogonal projection of the second common electrode line 105 on the substrate falls between the orthogonal projections of different domain regions D of the pixel electrode 103 on the substrate, that is, the second common electrode line 105 is disposed in the interdomain dark region.

[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 domain regions D. The second common electrode line 105 is disposed in the inter-domain dark region and can be in the shape of a cross. Of course, the pixel electrode 103 can also be divided into 2 domain regions D or 8 domain regions D, etc., depending on actual needs. The shape of the second common electrode line 105 will change accordingly. For example, if the pixel electrode 103 is divided into 2 domain regions D and the second common electrode line 105 is disposed in the inter-domain dark region, its shape can be in the shape of a line. The implementation principle is similar to that described above and will not be described in detail.

[0044] In the display substrate provided in this embodiment, the first common electrode line 104 surrounds the pixel electrode 103, and the second common electrode line 104 is disposed in the interdomain dark area. While avoiding light blockage, it can increase the area of ​​the overall common electrode line (first common electrode line 104 and second common electrode line 105), thereby improving the electric field shielding effect of the overall common electrode line. This can effectively reduce the large pull on the overall common electrode line when the signal on the gate line 101 and the data line 102 undergoes high-low transitions, avoid common electrode voltage disturbances, and thus improve crosstalk and other defects, thereby enhancing the display effect.

[0045] In some embodiments, such as 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 are connected to the first sub-common electrode line 1041.

[0046] The first common electrode line 104 can be viewed as multiple first sub-common electrode lines 1041 surrounding the pixel electrode 103. For example, there are two first sub-common electrode lines 1041 extending laterally on the top and bottom 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 multiple second sub-common electrode lines 1051 arranged at intersections in the interdomain dark region, such as a second sub-common electrode line 1051 extending laterally and a second sub-common electrode line 1051 extending vertically. The second sub-common electrode line 1051 extending laterally and the second sub-common electrode line 1051 extending vertically are connected together at the intersection position, which can be in the shape of a "+".

[0048] Meanwhile, both ends of the horizontally extending second sub-common electrode line 1051 are connected to the corresponding first sub-common electrode line 1041, and both ends of the vertically extending second sub-common electrode line 1051 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 overall common electrode line (the first common electrode line 104 and the second common electrode line 105). Therefore, the electric field shielding effect of the overall common electrode line can be improved, thereby effectively reducing the large pull on the overall common electrode line when the signal on the gate line 101 and the data line 102 changes from high to low, avoiding common electrode voltage disturbance, and thus improving crosstalk and other defects, and improving the display effect.

[0050] The first common electrode line 104 and the second common electrode line 105 can be formed using the same material and the same process to reduce process steps and save manufacturing costs. At the same time, it can reduce the connection resistance between the first common electrode line 104 and the second common electrode line 105, avoiding any impact on the signal transmission of the common electrode.

[0051] Figure 3 This is a schematic diagram of the structure of a second type of display substrate provided in an embodiment of this disclosure, as shown below. Figure 3 As shown, the display substrate also includes: an auxiliary common electrode block 106; the orthographic projection of the auxiliary common electrode block 106 on the substrate falls on the corner of the orthographic projection of different domain regions of the pixel electrode 103 on the substrate.

[0052] The orthographic projection of the auxiliary common electrode block 106 onto the substrate falls at the corner of the orthographic projection of different domain regions of the pixel electrode 103 onto the substrate. That is, the auxiliary common electrode block 106 is disposed in the surrounding electric field dark area. While avoiding blocking light, it can increase the area of ​​the overall common electrode line (first common electrode line 104 and second common electrode line 105). Therefore, it can improve the electric field shielding effect of the overall common electrode line, thereby effectively reducing the large pull on the overall common electrode line when the signal on the gate line 101 and the data line 102 changes from high to low, avoiding common electrode voltage disturbance, and thus improving crosstalk and other defects, and improving the display effect.

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

[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 are integrally formed. The auxiliary common electrode block 106, the first common electrode line 104, and the second common electrode line 105 can be formed using the same material and the same process to reduce process steps and save manufacturing costs. Simultaneously, 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, avoiding any impact on the signal transmission of the common electrode.

[0055] The shape of the auxiliary common electrode block 106 can be one of triangle, square, sawtooth or circle. The shape of the auxiliary common electrode block 106 can be set according to actual needs, and will not be listed here.

[0056] Figure 4 This is a schematic diagram of the structure of a third type of display substrate provided in an embodiment of this disclosure. Figure 5 This is a schematic diagram of the structure of the fourth type of display substrate provided in the embodiments of this disclosure. Figure 4 and Figure 5 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 some second sub-common electrode lines 1051 are connected to the first sub-common electrode lines 1041, and some second sub-common electrode lines 1051 are disconnected from the first sub-common electrode lines 1041 and suspended.

[0057] Figure 4 and Figure 5 In the display substrate shown, the first common electrode line 104 can be considered as multiple first sub-common electrode lines 1041 surrounding the pixel electrode 103. For example, there are two first sub-common electrode lines 1041 extending laterally on the top and bottom 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 multiple second sub-common electrode lines 1051 arranged at intersections in the interdomain dark region, such as a second sub-common electrode line 1051 extending laterally and a second sub-common electrode line 1051 extending vertically. The second sub-common electrode line 1051 extending laterally and the second sub-common electrode line 1051 extending vertically are connected together at the intersection position, which can be in the shape of a "+".

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

[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 disposed in the interdomain dark area. While avoiding light blockage, it can increase the area of ​​the overall common electrode line (first common electrode line 104 and second common electrode line 105), thus improving the electric field shielding effect of the overall common electrode line. This can effectively reduce the large pull on the overall common electrode line when the signal on the gate line 101 and data line 102 undergoes high-low transitions, avoid common electrode voltage disturbances, and thus improve crosstalk and other defects, thereby enhancing the display effect.

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

[0062] Figure 6 This is a schematic diagram of the structure of the fifth type of display substrate provided in the embodiments of this disclosure, as shown below. Figure 6 As shown, the first common electrode line 104 includes: multiple first sub-common electrode lines 1041; the 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; the multiple second sub-common electrode lines 1051 are cross-connected and 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 difference in the display substrate shown is that, Figure 4 In the display substrate shown, both ends of the vertically extending second sub-common electrode line 1051 are disconnected from and suspended from the corresponding first sub-common electrode line 1041. Both ends of the horizontally extending second sub-common electrode line 1051 are connected to the corresponding first sub-common electrode line 1041. Figure 5 In the display substrate shown, both ends of the vertically extending second sub-common electrode line 1051 are connected to the corresponding first sub-common electrode line 1041, and both ends of the horizontally extending second sub-common electrode line 1051 are disconnected from and suspended from the corresponding first sub-common electrode line 1041. Figure 6 In the display substrate shown, both ends of the vertically extending second sub-common electrode line 1051 are disconnected from and suspended from the corresponding first sub-common electrode line 1041, and both ends of the horizontally extending second sub-common electrode line 1051 are disconnected from and suspended from the corresponding first sub-common electrode line 1041.

[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 disposed in the interdomain dark area. While avoiding light blockage, it can increase the area of ​​the overall common electrode line (first common electrode line 104 and second common electrode line 105), thus improving the electric field shielding effect of the overall common electrode line. This can effectively reduce the large pull on the overall common electrode line when the signal on the gate line 101 and data line 102 undergoes high-low transitions, avoid common electrode voltage disturbances, and thus improve crosstalk and other defects, thereby enhancing the display effect.

[0065] Meanwhile, 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. This can improve the resistance uniformity of the overall common electrode lines in the display substrate, thereby ensuring the stability of the common electrode signal transmission.

[0066] Figure 7 This is a schematic diagram of the structure of the sixth type of display substrate provided in the embodiments of this disclosure, as shown below. 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 from each other; 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 are disconnected from and suspended from the first sub-common electrode lines 1041.

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

[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 disposed in the interdomain dark area. While avoiding light blockage, it can increase the area of ​​the overall common electrode line (first common electrode line 104 and second common electrode line 105), thus improving the electric field shielding effect of the overall common electrode line. This can effectively reduce the large pull on the overall common electrode line when the signal on the gate line 101 and data line 102 undergoes high-low transitions, avoid common electrode voltage disturbances, and thus improve crosstalk and other defects, thereby enhancing the display effect.

[0069] Meanwhile, 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 line 1041 and suspended, which can be regarded as increasing the number of different common electrode lines, that is, increasing the number of common electrode lines. This can improve the resistance uniformity of the overall common electrode lines in the display substrate, thereby ensuring the stability of the common electrode signal transmission.

[0070] In some embodiments, the display substrate has a driving side (not shown) and a non-driving side (not shown) 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 the region near the driving side, the plurality of first common electrode lines 1041 are disconnected and suspended from each other, and the plurality of second sub-common electrode lines 1051 are cross-connected and all disconnected and suspended from the first sub-common electrode lines 1041; in the region near 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 all connected to the first sub-common electrode lines 1041.

[0071] The data lines 102 in the display substrate are generally driven by a driver chip (not shown in the figure). The data lines 102 or common electrode signals can be bonded to the driver chip via bonding pads (not shown in the figure). The side with the bonding pads is called the driving side, and the side opposite to the driving side is called the non-driving side. Due to the effect of resistor-capacitor delay (RCDelay), the charging rate of large-size display substrates differs between the driving side and the non-driving side.

[0072] In the region near the driving side, multiple first common electrode lines 1041 are disconnected and suspended, and multiple second sub-common electrode lines 1051 are cross-connected and disconnected from the first sub-common electrode lines 1041 and suspended. In the region near 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. This reduces the resistance of the overall common electrode lines (first common electrode lines 104 and second common electrode lines 105) near the non-driving side, making the resistance of the overall common electrode lines near the non-driving side less than that near the driving side. This avoids the influence of resistive-capacitive delay (RC Delay), ensures the charging rate of the display substrate near the non-driving side, and thus improves the display effect.

[0073] Secondly, embodiments of this disclosure provide a display device, which includes a display substrate as provided in any of the above embodiments. The display device can be, for example, any product with a display function such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or in-vehicle device. Other essential components of this display device are readily understood by those skilled in the art and will not be described in detail here, nor should they be construed as limiting the scope of this disclosure.

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

[0075] In the several embodiments provided in this disclosure, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the positions of the components shown are only logical functional positions, and in actual implementation, they may be arranged in other positions.

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

Claims

1. A display substrate, characterized by, The display substrate comprises: a substrate, gate lines and data lines arranged in a cross manner on the substrate, and a pixel electrode arranged in a cross region 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 extension directions of the slits in adjacent domains are different; the display substrate further comprises: a first common electrode line and a second common electrode line on the substrate; The orthogonal projection of the first common electrode line on the substrate falls around the orthogonal projection of the pixel electrode on the substrate; The orthogonal projection of the second common electrode line on the substrate falls between the orthogonal projections of the pixel electrodes in different domains on the substrate; The display substrate further comprises: an auxiliary common electrode block; The orthogonal projection of the auxiliary common electrode block on the substrate falls at a corner of the orthogonal projections of the pixel electrodes in different domains on the substrate.

2. The display substrate of claim 1, wherein, The first common electrode line comprises: a plurality of first sub-common electrode lines; the first sub-common electrode lines are connected in a loop; The second common electrode line comprises: a plurality of second sub-common electrode lines; the second sub-common electrode lines are cross-connected and connected with the first sub-common electrode lines. 3.The display substrate of claim 2, wherein, The auxiliary common electrode block, the first common electrode line and the second common electrode line are integrally formed.

4. The display substrate of claim 1, wherein, The auxiliary common electrode block is in a shape of a triangle, a square, a zigzag or a circle.

5. The display substrate of claim 1, wherein, The first common electrode line comprises: a plurality of first sub-common electrode lines; the first sub-common electrode lines are connected in a loop; The second common electrode line comprises: a plurality of second sub-common electrode lines; the second sub-common electrode lines are cross-connected and part of the second sub-common electrode lines are disconnected from the first sub-common electrode lines and suspended. 6.The display substrate of claim 1, wherein, The first common electrode line comprises: a plurality of first sub-common electrode lines; the first sub-common electrode lines are connected in a loop; The second common electrode line comprises: a plurality of second sub-common electrode lines; the second sub-common electrode lines are cross-connected and all of the second sub-common electrode lines are disconnected from the first sub-common electrode lines and suspended.

7. The display substrate of claim 1, wherein, The first common electrode line comprises: a plurality of first sub-common electrode lines; the first sub-common electrode lines are disconnected and suspended; The second common electrode line comprises: a plurality of second sub-common electrode lines; the second sub-common electrode lines are cross-connected and all of the second sub-common electrode lines are disconnected from the first sub-common electrode lines and suspended. 8.The display substrate of claim 1, wherein, The display substrate has a driving side and a non-driving side opposite to the driving side; The first common electrode line comprises: a plurality of first sub-common electrode lines; the second common electrode line comprises: a plurality of second sub-common electrode lines; In a region close to the driving side, the first sub-common electrode lines are disconnected and suspended, and the second sub-common electrode lines are cross-connected and all of the second sub-common electrode lines are disconnected from the first sub-common electrode lines and suspended; In the region close to the non-driving side, a plurality of the first sub-common electrode lines are connected in a loop, and a plurality of the second sub-common electrode lines are connected in a cross and are connected to the first sub-common electrode lines.

9. A display device, characterized by comprising: The display device includes the display substrate as claimed in any one of claims 1 to 8.

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