DISPLAY SUBSTRATE AND DISPLAY APPARATUS

Provided are a display substrate and a display apparatus. The display apparatus includes a base substrate including a display region and a bezel region on at least one side of the display region; and a plurality of touch lines in the bezel region, including a plurality of touch drive lines and a plurality of touch sensing lines, where a first distance is provided between any two adjacent touch drive lines in the plurality of touch drive lines, a second distance is provided between any two adjacent touch sensing lines in the plurality of touch sensing lines, a third distance is provided between the plurality of touch drive lines and the plurality of touch sensing lines, the first distance is substantially equal to the second distance, and the third distance is greater than each of the first distance and the second distance.

TECHNICAL FIELD

The present disclosure relates to the field of display technology, and particularly relates to a display substrate and a display apparatus.

BACKGROUND

The organic light-emitting element (OLED) display apparatus is an OLED based display screen that has excellent characteristics of self-luminescence, high contrast, thinness, wide visual angle, fast response, applicability to flexible panels, wide operating temperature range, simple structure and manufacture procedure and the like, and that is gaining more and more attention and has a wide application prospect. In the existing art, a touch function is integrated through a touch module embedded into an OLED display module, so that the display function and the touch function are integrated into the OLED display apparatus.

SUMMARY

The present disclosure provides a display substrate and a display apparatus, and adopts the specific solutions as follows:

In one aspect, an embodiment of the present disclosure provides a display substrate, including:a base substrate including a display region and a bezel region on at least one side of the display region;a plurality of touch lines in the bezel region, including a plurality of touch drive lines and a plurality of touch sensing lines, wherein a first distance is provided between any two adjacent touch drive lines in the plurality of touch drive lines, a second distance is provided between any two adjacent touch sensing lines in the plurality of touch sensing lines, a third distance is provided between the plurality of touch drive lines and the plurality of touch sensing lines, the first distance is substantially equal to the second distance, and the third distance is greater than each of the first distance and the second distance.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, a blank is reserved between the plurality of touch drive lines and the plurality of touch sensing lines.

In some embodiments, the display substrate provided in the embodiments of the present disclosure further includes at least one shield line between the plurality of touch drive lines and the plurality of touch sensing lines.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the shield line has a line width greater than or equal to 2.5 times the first distance, and less than or equal to 12.5 times the first distance.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, a fourth distance is provided between the at least one shield line and the plurality of touch drive lines, a fifth distance is provided between the at least one shield line and the plurality of touch sensing lines, and the fourth distance and the fifth distance are each greater than or equal to the first distance, and less than or equal to 12.5 times the first distance.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the number of the at least one shield line is 1, and the fourth distance and the fifth distance are each greater than a line width of the shield line.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the number of the at least shield line is a positive integer, and the fourth distance and the fifth distance are each smaller than a line width of the shield line.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the number of the at least one shield line is greater than or equal to 2, a sixth distance is provided between any two adjacent shield lines, and the sixth distance, the fourth distance and the fifth distance are substantially the same.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the number of the at least one shield line is greater than or equal to 3, and the fourth distance, the fifth distance, and the sixth distance are each substantially equal to the first distance.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the line width of the shield line is inversely related to the number of the at least one shield line.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the bezel region includes a first bezel region on a side of the display region, a second bezel region opposite to the first bezel region, and a third bezel region and a fourth bezel region each connecting the first bezel region and the second bezel region, wherein the first bezel region includes a first fan-out region, a bending region, and a second fan-out region arranged in sequence along a direction away from the display region; andthe at least one shield line each includes a main body part and at least two branch parts, wherein the main body part and the at least two branch parts of the same shield line are integrally formed, the main body part is located in the second fan-out region and the bending region, and the at least two branch parts are located in at least parts of the first fan-out region, the second bezel region, the third bezel region, and the fourth bezel region.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the main body part has a line width substantially equal to 2.5 times the first distance.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, a seventh distance is provided between the main body part and the plurality of touch drive lines, an eighth distance is provided between the main body part and the plurality of touch sensing lines, and the seventh distance and the eighth distance are each greater than or equal to the first distance, and less than or equal to 4.5 times the first distance.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, each branch part has a line width greater than or equal to 2.5 times the first distance, and less than or equal to 12.5 times the first distance.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, a ninth distance is provided between the branch parts and the plurality of touch drive lines, a tenth distance is provided between the branch parts and the plurality of touch sensing lines, and the ninth distance and the tenth distance are each greater than or equal to the first distance, and less than or equal to 12.5 times the first distance.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, in the second fan-out region, the touch drive line and/or the touch sensing line on at least one side of the main body part each include: a first touch part, a second touch part, and a third touch part connected in sequence along a direction away from the display region, whereinan eleventh distance is provided between the first touch part and the main body part, a twelfth distance is provided between the second touch part and the main body part, a thirteenth distance is provided between the third touch part and the main body part, the eleventh distance is substantially equal to the first distance, the twelfth distance is greater than the first distance and less than 4.5 times the first distance, and the thirteenth distance is substantially equal to 4.5 times the first distance.

In some embodiments, the display substrate provided in the embodiments of the present disclosure further includes at least one ground line between the plurality of touch drive lines and the plurality of touch sensing lines, wherein the ground line and the shield line are disposed independent from each other.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the at least one ground line and the at least one shield line are arranged alternatively between the plurality of touch drive lines and the plurality of touch sensing lines.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, at least part of the at least one shield line is disposed closer to the plurality of touch drive lines than the at least one ground line.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the third distance is greater than or equal to 4.5 times the first distance, and less than or equal to 37.5 times the first distance.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, each touch line has a line width substantially equal to 2.5 times the first distance.

In another aspect, an embodiment of the present disclosure provides a display apparatus, including the display substrate provided in the above embodiments of the present disclosure.

In some embodiments, the display apparatus provided in the embodiments of the present disclosure further includes a flexible printed circuit electrically connected to the display substrate and located on an opposite side to a display side of the display apparatus.

In some embodiments, in the display apparatus provided in the embodiments of the present disclosure, the display substrate includes a display region, and a first bezel region on a side of the display region and configured to be bonded to the flexible printed circuit; whereinthe first bezel region includes a first fan-out region, a bending region, and a second fan-out region arranged in sequence along a direction away from the display region, wherein the first fan-out region is located on the display side, and the second fan-out region is located on the opposite side.

DETAIL DESCRIPTION OF EMBODIMENTS

To make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions according to the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It should be noted that the sizes and shapes of various components in the drawings are not to scale, but are merely intended to schematically illustrate the present disclosure. The same or similar reference signs refer to the same or similar elements or elements with the same or similar functions throughout the drawings. To keep the following description of the embodiments of the present disclosure clear and concise, detailed description of known functions and known components is omitted herein.

Unless otherwise defined, technical or scientific terms used herein are intended to have general meanings as understood by those skilled in the art to which the present disclosure belongs. The words “first”, “second” and similar terms used in the description and the claims of the present disclosure do not denote any order, quantity, or importance, but are used merely for distinguishing different components from each other. The word “comprising” or “including” or the like means that the element or item preceding the word contains elements or items that appear after the word or equivalents thereof, but does not exclude other elements or items. The words “inner”, “outer”, “upper”, “lower”, and the like are merely used to indicate a relative positional relationship, and when an absolute position of the described object is changed, the relative positional relationship may be changed accordingly.

In the existing art, two metal layers, i.e., a metal mesh layer and a bridging layer, are used to manufacture a touch function layer. The metal mesh is located in a display region AA, and may be divided into touch drive electrodes and touch sensing electrodes according to the horizontal and vertical directions, where one of the touch drive electrodes or the touch sensing electrodes are connected with each other, while the other of the touch drive electrodes or the touch sensing electrodes are connected through the bridging layer. Therefore, an out-of-cell touch screen panel (TSP) is omitted, which can reduce the thickness of the screen and facilitate folding; and meanwhile, the bezel width can be reduced since there is no fitting tolerance.

To provide valid signals for the touch drive electrodes and the touch sensing electrodes, touch drive lines electrically connected to the touch drive electrodes, and touch sensing lines connected to the touch sensing electrodes, are disposed in a bezel region around the display region AA. However, in the existing art, a distance between the touch drive lines and the touch sensing lines is the same as or similar to a distance between two adjacent touch drive lines and a distance between two adjacent touch sensing lines, so that a relatively large parasitic capacitance is present between the touch drive lines and the touch sensing lines, which may cause mutual interference between touch drive signals of the touch drive lines and touch sensing signals of the touch sensing lines, and thus affect the touch performance.

To address the above technical problem in the existing art, an embodiment of the present disclosure provides a display substrate which, referring toFIGS.1to4, includes:a base substrate101including a display region AA, and a bezel region (e.g., B1, B2, B3, B4) on at least one side of the display region AA; anda plurality of touch lines102in the bezel region (e.g., B1, B2, B3, B4), including a plurality of touch drive lines Tx and a plurality of touch sensing lines Rx. A first distance d1is provided between two adjacent touch drive lines Tx in the plurality of touch drive lines Tx, a second distance d2is provided between two adjacent touch sensing lines Rx in the plurality of touch sensing lines Rx, and a third distance d3is provided between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole. The first distance d1is substantially equal to (i.e., equal to or within a 5% error range due to the manufacturing process, measurement, etc.) the second distance d2, and the third distance d3is greater than each of the first distance d1and the second distance d2.

In the display substrate provided in the embodiments of the present disclosure, by providing the third distance d3between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole to be greater than each of the first distance d1between two adjacent touch drive lines Tx and the second distance d2between two adjacent touch sensing lines Rx, the third distance d3between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole is increased, so that the parasitic capacitance between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole is reduced, which can reduce the interference of the parasitic capacitance on the touch drive signals of the touch drive lines Tx and the touch sensing signals of the touch sensing lines Rx, and improve the touch performance.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the third distance d3may be set to be greater than or equal to 4.5 times the first distance d1, and less than or equal to 37.5 times the first distance d1. For example, the third distance d3is 4.5 times, 14.5 times, 25 times, 37.5 times the first distance d1, or the like. Exemplarily, the first distance d1is 4 μm, and the third distance d3is 18 μm, 58 μm, 100 μm, 150 μm, or the like. Under the condition that the third distance d3between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole and the first distance d1between two adjacent touch drive lines Tx satisfy the above magnitude relationship, not only can the interference caused by the parasitic capacitance be well reduced, but also the space of the bezel region (e.g., B1, B2, B3, B4) can be sufficiently utilized, so that the bezel region (e.g., B1, B2, B3, B4) will not have a large width caused by an overlarge third distance d3, that is, can still satisfy a narrow-bezel design.

In some embodiments, as shown inFIGS.1and2, in the display substrate provided in the embodiments of the present disclosure, a blank may be reserved between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole. In other words, no wire is provided between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole, and the parasitic capacitance between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole is reduced simply by increasing the third distance d3.

Considering that among the plurality of touch drive lines Tx and the plurality of touch sensing lines Rx, the mutual interference is mainly present between a touch drive line Tx and a touch sensing line Rx with the smallest distance therebetween, taking a third distance d3provided between one touch drive line Tx and one touch sensing line Rx as an example, the present disclosure tests the parasitic capacitance between the two lines under different third distances d3. Optionally, the present disclosure provides the touch drive line Tx having a line length of 100 μm and a line width w2of 10 μm, the touch sensing line Rx having a line length of 100 μm and a line width w3of 10 μm, and parasitic capacitances where the third distance d3between the touch drive line Tx and the touch sensing line Rx is 4 μm and 18 μm, respectively. The result shows that where the third distance d3is 4 μm, the parasitic capacitance is 4.55 fF, and where the third distance d3is 18 μm, the parasitic capacitance is 1.54 fF. As can be seen, where the third distance d3is increased to 18 μm, the parasitic capacitance is reduced by about 66% compared with the solution with the third distance d3being 4 μm.

In some embodiments, as shown inFIGS.3to11, the display substrate provided in the embodiments of the present disclosure may further include at least one shield line103between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole. In other words, at least one shield line103is provided in the third distance d3between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole. Therefore, the plurality of touch drive lines Tx as a whole can be separated from the plurality of touch sensing lines Rx as a whole by the shield line103, thereby effectively shielding mutual interference between the touch drive signals of the touch drive lines Tx and the touch sensing signals of the touch sensing lines Rx, and contributing to improving the touch performance.

In some embodiments, as shown inFIGS.4to11, in the display substrate provided in the embodiments of the present disclosure, the shield line103may have a line width w1greater than or equal to 2.5 times the first distance d1, and less than or equal to 12.5 times the first distance d1. The shield line103within this width range can well shield and isolate from each other the touch drive signals of the touch drive lines Tx and the touch sensing signals of the touch sensing lines Rx on two sides of the shield line103, thereby avoiding mutual interference between the touch drive signals and the touch sensing signals. Optionally, the line width w1of the shield line103may be equal to 2.5 times, 3.8 times, 5 times, 7 times, 8.75 times, 12.5 times the first distance d1, or the like. Exemplarily, the first distance d1is 4 μm, and the line width w1of the shield line103may be 10 μm, 15.2 μm, 20 μm, 28 μm, 35 μm, 50 μm, or the like.

In some embodiments, as shown inFIGS.4to11, in the display substrate provided in the embodiments of the present disclosure, each touch line102may have a line width (e.g., the line width w2of the touch drive line Tx or the line width w3of the touch sensing line Rx) substantially equal to (i.e., equal to or within a 5% error range due to the manufacturing process, measurement, etc.) 2.5 times the first distance d1. With such a line width, the touch line102may have a relatively small resistance, and the risk of breakage of the touch line102due to over-thinning can be effectively reduced. Exemplarily, the first distance d1is 4 μm, while the line width w2of the touch drive line Tx and the line width w3of the touch sensing line Rx are both 10 μm. Since the line width w1of the shield line103is greater than or equal to 2.5 times the first distance d1, and less than or equal to 12.5 times the first distance d1, the line width w1of the shield line103is greater than or equal to the line width of the touch line102(e.g., the line width w2of the touch drive line Tx or the line width w3of the touch sensing line Rx). Optionally, the line width w1of the shield line103may have a maximum value equal to 5 times the line width of the touch line102(e.g., the line width w2of the touch drive line Tx or the line width w3of the touch sensing line Rx).

In some embodiments, as shown inFIGS.4to11, in the display substrate provided in the embodiments of the present disclosure, a fourth distance d4is provided between the at least one shield line103as a whole and the plurality of touch drive lines Tx as a whole, and a fifth distance d5is provided between the at least one shield line103as a whole and the plurality of touch sensing lines Rx as a whole. Optionally, the fourth distance d4and the fifth distance d5may be each greater than or equal to the first distance d1and less than or equal to 12.5 times the first distance d1. Under the condition that the fourth distance d4and the fifth distance d5are each equal to the first distance d1, a short circuit between the shield line103and the touch drive lines Tx, as well as a short circuit between the shield line103and the touch sensing lines Rx, can be avoided. Under the condition that the fourth distance d4and the fifth distance d5are each equal to 12.5 times the first distance d1, the effects of a narrow bezel and parasitic capacitance interference prevention can be achieved at the same time. In some embodiments, each of the fourth distance d4and the fifth distance d5may be 1 time, 2.5 times, 6 times, 12.5 times the first distance d1, or the like. Optionally, the first distance d1is 4 μm, and each of the fourth distance d4and the fifth distance d5is 4 μm, 10 μm, 24 μm, 50 μm, or the like.

It should be noted that, limited by the wiring space, the line width of a single touch line102(e.g., the line width w2of the touch drive line Tx or the line width w3of the touch sensing line Rx), the third distance d3between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole, the line width w1of a single shield line103, the fourth distance d4between the at least one shield line103as a whole and the plurality of touch drive lines Tx as a whole, and the fifth distance d5between the at least one shield line103as a whole and the plurality of touch sensing lines Rx as a whole, may differ to some extent at different positions of the bezel region (e.g., B1, B2, B3, B4). The magnitude relationships among the related parameters defined in the present disclosure may be regarded as definitions of the magnitude relationships among a touch drive line Tx, a touch sensing line Rx, and a shield line103in the same region and having approximately parallel tracing trends.

In some embodiments, as shown inFIG.5, in the display substrate provided in the embodiments of the present disclosure, the number of shield lines103included in the at least one shield line103as a whole may be 1, in which case, the fourth distance d4between the shield line103as a whole and the plurality of touch drive lines Tx as a whole, and the fifth distance d5between the shield line103and the plurality of touch sensing lines Rx as a whole may be each greater than the line width w1of the shield line103. In this case, the fourth distance d4and the fifth distance d5are controlled to be larger to minimize mutual interference of the touch drive signals of the touch drive lines Tx and the touch sensing signals of the touch sensing lines Rx on two sides of the shield line103.

In some embodiments, as shown inFIGS.4and6to11, in the display substrate provided in the embodiments of the present disclosure, the number of the at least one shield line103is a positive integer (e.g., 1, 2, 3, 4, 5, etc.), in which case, the fourth distance d4between the at least one shield line103as a whole and the plurality of touch drive lines Tx as a whole, and the fifth distance d5between the at least one shield line103as a whole and the plurality of touch sensing lines Rx as a whole, may be each less than the line width w1of the shield line103. A larger line width w1of the shield line103will lead to a better shielding effect. Therefore, the line width w1of the shield line103may be set to be greater than each of the fourth distance d4and the fifth distance d5to ensure a large line width w1of the shield line103, so that the mutual interference between the touch drive signals of the touch drive lines Tx and the touch sensing signals of the touch sensing lines Rx can be shielded to a larger extent by the at least one shield line103as a whole.

Exemplarily, inFIG.4, one shield line103is provided, each of the fourth distance d4and the fifth distance d5is 4 μm, and the line width w1of the shield line103is 10 μm; inFIG.6, one shield line103is provided, each of the fourth distance d4and the fifth distance d5is 4 μm, and the line width w1of the shield line103is 50 μm; inFIG.7, one shield line103is provided, each of the fourth distance d4and the fifth distance d5is 25 μm, and the line width w1of the shield line103is 50 μm; inFIG.8, two shield lines103are provided, each of the fourth distance d4and the fifth distance d5is 10 μm, and the line width w1of each shield line103is 35 μm; inFIG.9, three shield lines103are provided, each of the fourth distance d4and the fifth distance d5is 4 μm, and the line width w1of each shield line103is 28 μm; inFIG.10, four shield lines103are provided, each of the fourth distance d4and the fifth distance d5is 4 μm, and the line width w1of each shield line103is 20 μm; and inFIG.11, five shield lines103are provided, each of the fourth distance d4and the fifth distance d5is 4 μm, and the line width w1of each shield line103is 15.2 μm. In addition, inFIG.5, one shield line103is provided, each of the fourth distance d4and the fifth distance d5is 24 μm, and the line width w1of the shield line103is 10 μm.

Accordingly, in the present disclosure, the parasitic capacitance between one touch drive line Tx and one touch sensing line Rx on two sides of the third distance d3in each ofFIG.4to11is tested. Optionally, inFIGS.4to11, the touch drive line Tx has a line length of 100 μm and a line width w2of 10 μm, the touch sensing line Rx has a line length of 100 μm and a line width w3of 10 μm, and the shield line103has a line length of 100 μm.

The result shows that in the solution shown inFIG.4, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx is 0.54 fF. As can be seen from the above, the third distance d3in the solution shown inFIG.2is 18 μm, so the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx is 1.54 fF. It can be seen that given the same third distance d3, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx is reduced by about 65% where the shield line103is added.

In the solution shown inFIG.5, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx is 0.28 fF. Comparing the solutions shown inFIGS.4and5, it can be seen that given the same number of shield lines103and the same line width w1, where the fourth distance d4and the fifth distance d5are each increased from 4 μm shown inFIG.4to 24 μm shown inFIG.5, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx can be reduced from 0.54 fF to 0.28 fF, that is, reduced by about 48%.

In the solution shown inFIG.6, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx is 0.15 fF. Compared with the solution shown inFIG.4, it can be seen that under the condition that the fourth distance d4is equal to the fifth distance d5(both are 4 μm), where the line width w1of the shield line103is increased from 10 μm shown inFIG.4to 50 μm shown inFIG.6, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx can be reduced from 0.54 fF to 0.15 fF, that is, reduced by about 72%. Compared with the solution of increasing the fourth distance d4and the fifth distance d5to reduce the parasitic capacitance inFIG.5, the solution of increasing the line width w1of the shield line103shown inFIG.6achieves a better shielding effect than the solution of simply increasing the fourth distance d4and the fifth distance d5.

In the solution shown inFIG.7, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx is 0.09 fF. Different from the solution of simply increasing the third distance d3inFIG.5, the solution of increasing both the third distance d3and the line width w1of the shield line103inFIG.7can achieve a better shielding effect. For a foldable product with relatively long touch drive lines Tx and touch sensing lines Rx, the solution shown inFIG.7may be selected to achieve a stronger shielding effect.

In the solution shown inFIG.8, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx is 0.08 fF. Comparing the solutions shown inFIGS.7and8, it can be seen that given the same third distance d3, the solution of increasing the number of shield lines103shown inFIG.8can achieve a stronger shielding effect. In addition, in the solutions shown inFIGS.9to11, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx is 0.06 fF. Compared with the solution shown inFIG.8, it can be seen that where the number of shield lines103is increased from 2 to 3, 4, and 5 in sequence, the parasitic capacitance is further reduced, but where the number of shield lines103is 3, 4, and 5, equivalent shielding effects are obtained. Therefore, to save the raw material cost, reduce the difficulty in the manufacturing process, and save the wiring space, the solution using three shield lines103as shown inFIG.9may be selected in the present disclosure.

In addition, to show the shielding effects of the solutions shown inFIGS.7to11more intuitively, the parasitic capacitances obtained in the solutions shown inFIGS.7to11are illustrated by a bent line shown inFIG.12in the present disclosure. Meanwhile,FIG.12further shows the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx where no shield line103is provided between the touch drive line Tx and the touch sensing line Rx (i.e., the number of shield lines103is 0), while ensuring that the third distance d3between the touch drive line Tx and the touch sensing line Rx is 100 μm, as shown inFIGS.7to11. Specifically, the abscissa ofFIG.12represents the number of shield lines103between the touch drive line Tx and the touch sensing line Rx, while the ordinate represents the parasitic capacitance (Cm) between the touch drive line Tx and the touch sensing line Rx. As can be seen fromFIG.12, under the condition that no shield line103is provided between the touch drive line Tx and the touch sensing line Rx, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx is 0.19 fF; as the number of shield lines103between the touch drive line Tx and the touch sensing line Rx is increased from 0 to 3, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx is gradually reduced; and as the number of shield lines103between the touch drive line Tx and the touch sensing line Rx is increased from 3 to 5, the parasitic capacitance between the touch drive line Tx and the touch sensing line Rx is hardly changed.

In some embodiments, as shown inFIGS.8to11, in the display substrate provided in the embodiments of the present disclosure, under the condition that the number of the at least one shield line103is greater than or equal to 2, a sixth distance d6is provided between two adjacent shield lines103. Optionally, the sixth distance d6, the fourth distance d4, and the fifth distance d5may be substantially the same (i.e., the same or within a 5% error range due to the manufacturing process, measurement, etc.), so that the shield lines103are uniformly distributed within the third distance d3, which is beneficial to uniform etching of a film layer where the shield lines103are located.

In some embodiments, as shown inFIGS.9to11, in the display substrate provided in the embodiments of the present disclosure, under the condition that the number of the at least one shield line103is greater than or equal to 3, each of the fourth distance d4, the fifth distance d5, and the sixth distance d6may be substantially equal to (i.e., equal to or within a 5% error range due to the manufacturing process, measurement, etc.) the first distance d1, thereby avoiding a short circuit between the shield lines103and the touch sensing line Tx or the touch sensing line Rx, while ensuring a larger line width w1of each shield line103as well as a better shielding effect.

In some embodiments, as shown inFIGS.8to11, in the display substrate provided in the embodiments of the present disclosure, under the condition that the number of the at least one shield line103is greater than or equal to 2, and the fourth distance d4, the fifth distance d5, and the sixth distance d6may be substantially the same (e.g., equal to the first distance d1), the third distance d3for providing the shield lines103on the basis of satisfying a narrow-bezel effect is limited, while the third distance d3is equal to a sum of the line width w1of each shield line103, the fourth distance d4, the fifth distance d5, and at least one sixth distance d6, where the number of sixth distances d6is one less than the total number of shield lines103. Therefore, a greater sum of the fourth distance d4, the fifth distance d5, and the at least one sixth distance d6leads to a smaller line width w1of each shield line103. Further, under the condition that the fourth distance d4, the fifth distance d5, and the sixth distance d6are substantially the same, the sum of the fourth distance d4, the fifth distance d5, and the at least one sixth distance d6is equal to a sum of at least n sixth distances, where n is one plus the total number of shield lines103. On this basis, the line width w1of the shield line103is inversely related to the total number of the at least one shield line103as a whole. For example, inFIGS.8to11, the number of shield lines103is 2, 3, 4, 5 in sequence, and accordingly, the line width w1of the shield line103is 35 μm, 28 μm, 20 μm, 15.2 μm in sequence.

In some embodiments, as shown inFIG.3, in the display substrate provided in the embodiments of the present disclosure, the bezel region may include a first bezel region B1on a side of the display region AA, a second bezel region B2opposite to the first bezel region B1, and a third bezel region B3and a fourth bezel region B4each connecting the first bezel region B1and the second bezel region B2. The first bezel region B1includes a first fan-out region B11, a bending region B12, and a second fan-out region B13arranged in sequence along a direction away from the display region AA. Optionally, a bonding region B14bonded to a circuit board (e.g., a flexible printed circuit, FPC) is located on a side of the second fan-out region B13away from the display region AA. In some embodiments, as shown inFIGS.13to19, at least one of the shield lines103includes a main body part31and at least two branch parts32. The main body part31and the at least two branch parts32of the same shield line103are integrally formed. The main body part31is located in the second fan-out region B13and the bending region B12. Each of the branch parts32is located in at least parts of the first fan-out region B11, the second bezel region B2, the third bezel region B3, and the fourth bezel region B4. By dividing at least one of the shield lines103into at least two branch parts32on a side of the bending region B12away from the bonding region B14, it is equivalent to that in a region of the bending region B12away from the bonding region B14, at least two branch parts32are used for shielding interference between the touch drive line Tx and the touch sensing line Rx, which is beneficial to improving the touch performance. Meanwhile, the at least two branch parts32may share one main body part31and be electrically connected to one pin of a circuit board (e.g., flexible printed circuit, FPC), so that compared with the solution of electrically connecting each branch part32to the circuit board (e.g., flexible printed circuit, FPC) via a corresponding pin, the present disclosure can reduce the number of pins of the circuit board (e.g., flexible printed circuit, FPC), save the space occupied by the circuit board (e.g., flexible printed circuit, FPC), reduce the loading, and reduce the power consumption.

In some embodiments, as shown inFIGS.13and16, in the display substrate provided in the embodiments of the present disclosure, the main body part31may have a line width w31substantially equal to (i.e., equal to or within a 5% error range due to the manufacturing process, measurement, etc.) 2.5 times the first distance d1. A seventh distance d7is provided between the main body part31and the plurality of touch drive lines Tx as a whole, an eighth distance d8is provided between the main body part31and the plurality of touch sensing lines Rx as a whole, and the seventh distance d7and the eighth distance d8are each greater than or equal to the first distance d1, and less than or equal to 4.5 times the first distance d1.

In some embodiments, as shown inFIGS.13and14, in the display substrate provided in the embodiments of the present disclosure, each branch part32may have a line width w32greater than or equal to 2.5 times the first distance d1, and less than or equal to 12.5 times the first distance d1. A ninth distance d9is provided between the branch parts32and the plurality of touch drive lines Tx as a whole, a tenth distance d10is provided between the branch parts32and the plurality of touch sensing lines Rx as a whole, and the ninth distance d9and the tenth distance d10are each greater than or equal to the first distance d1and less than or equal to 12.5 times the first distance d1.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, a problem of insufficient wiring space may occur at a position of the second fan-out region B13adjacent to the bending region B12, and to ensure the distance between the main body part31and the touch drive lines Tx or the touch sensing lines Rx, as shown inFIGS.15and17, the touch drive line Tx and/or the touch sensing line Rx on at least one side of the main body part31may be provided with: a first touch part211, a second touch part212, and a third touch part213connected in sequence along a direction away from the display region AA. An eleventh distance d11is provided between the first touch part211and the main body part31, a twelfth distance d12is provided between the second touch part212and the main body part31, and a thirteenth distance d13is provided between the third touch part213and the main body part31. The eleventh distance d11may be substantially equal to (i.e., equal to or within a 5% error range due to the manufacturing process, measurement, etc.) the first distance d1, the twelfth distance d12may be greater than the first distance d1and less than 4.5 times the first distance d1, and the thirteenth distance d13may be substantially equal to (i.e., equal to or within a 5% error range due to the manufacturing process, measurement, etc.) 4.5 times the first distance d1.

In some embodiments, as shown inFIGS.20to23, in the display substrate provided in the embodiments of the present disclosure, at least one ground line104may be further provided between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole, and the ground line104and the shield line103are disposed independent from each other, so that the ground line104and the shield line103work jointly to shield touch drive signals of the touch drive lines Tx and touch sensing signals of the touch sensing lines Rx from each other.

In some embodiments, as shown inFIGS.20and21, in the display substrate provided in the embodiments of the present disclosure, the ground line104and the shield line103may be arranged alternatively between the plurality of touch drive lines Tx as a whole and the plurality of touch sensing lines Rx as a whole. Alternatively, as shown inFIGS.21to23, at least part of the shield lines103may be disposed closer to the plurality of touch drive lines Tx than the at least one ground line104as a whole. In some embodiments, the shield line103may be loaded with the same ground signal as the ground line104, or the shield line103may be loaded with the same touch drive signal as the touch drive line Tx. Since the same type of signals do not interfere with each other, under the condition that the shield line103is loaded with the same touch drive signal as the touch drive line Tx, the at least part of the shield lines103disposed closer to the plurality of touch drive lines Tx than the at least one ground line104as a whole can better shield interference of the touch sensing signals of the touch sensing lines Rx with the touch drive signals of the touch drive lines Tx.

In some embodiments, in the display substrate provided in the embodiments of the present disclosure, the display region AA may be provided with touch drive electrodes electrically connected to the touch drive lines Tx, and touch sensing electrodes electrically connected to the touch sensing lines Rx. Optionally, the touch drive electrodes and the touch sensing electrodes are both located in a touch layer (TMB), the touch drive electrodes or the touch sensing electrodes are electrically connected through a bridging layer (TMA), and an insulation layer is disposed between the touch layer and the bridging layer. Optionally, to reduce the resistance, the touch drive lines Tx and the touch sensing lines Rx may be wired in both the touch layer and the bridging layer, and accordingly, the shield line103may have a double-layer wiring structure in the touch layer and the bridging layer. For the same signal line (e.g., the touch drive line Tx, the touch sensing line Rx, or the shield line103), a trace in the touch layer and a trace in the bridging layer are electrically connected through a via running through the insulation layer.

In some embodiments, in the first fan-out region B11, as shown inFIG.19, dummy lines105may be further provided on two sides of the overall structure formed by the plurality of touch drive lines Tx and the plurality of touch sensing lines Rx, to prevent poor touch control due to wrinkles or even abnormal falling out of the insulation layer between the touch layer and the bridging layer. The dummy lines105may be wired in at least one of the bridging layer or the touch layer, and for an enhanced reinforcing effect of the insulation layer, the number of dummy lines105wired in the bridging layer may be smaller than that in the touch layer, so that a part of the dummy lines105near the touch drive lines Tx or the touch sensing lines Rx have a double-layer wiring structure in the bridging layer and the touch layer, while the remaining dummy lines105away from the touch drive lines Tx or the touch sensing lines Rx have a single-layer wiring structure in the touch layer.

In some embodiments, as shown inFIG.24, the display substrate provided in the embodiments of the present disclosure may further include a layer106where a pixel circuit is located, a layer107where a light-emitting device is located, an encapsulation layer108, a circular polarizer109, a protective cover plate110, and the like. In some embodiments, a color filter (CF) may be used instead of the circular polarizer109, which is not limited herein. Other essential components of the display substrate are regarded as present by those skilled in the art, which are not described herein and should not be construed as limiting the present disclosure.

Based on the same inventive concept, the present disclosure further provides a display apparatus which, as shown inFIG.24, includes the display substrate001provided in the embodiments of the present disclosure, where the display substrate001may be a display substrate such as an OLED display substrate or a QLED display substrate. Since the display apparatus is used to solve the problem based on a principle similar to that of the display substrate, the implementation of the display apparatus may refer to the embodiments of the display substrate described above, and repeated descriptions are omitted.

In some embodiments, as shown inFIG.24, the display apparatus provided in the embodiments of the present disclosure may further include a flexible printed circuit FPC electrically connected to the display substrate001and located on an opposite side to a display side (i.e., the side where the protective cover plate110is located) of the display apparatus.

In some embodiments, as shown inFIGS.1,3and24, the display substrate001includes a display region AA, and a first bezel region B1on a side of the display region AA and configured to be bonded to the flexible printed circuit FPC. The first bezel region B1includes a first fan-out region B11, a bending region B12, a second fan-out region B13, and a bonding region B14arranged in sequence along a direction away from the display region AA. The first fan-out region B11is located on the display side (i.e., the side where the protective cover plate110is located), and the second fan-out region B13is located on the opposite side to the display side (i.e., the side where the protective cover plate110is located), so as to facilitate the bonding connection between the touch lines102and the flexible printed circuit FPC in the second fan-out region B13. In addition, the second fan-out region B13is bent toward the opposite side to the display side (i.e. the side where the protective cover plate110is located), so that a width of the first bezel region B1where the second fan-out region B13is located can be effectively reduced, and the narrow-bezel design of the first bezel region B1can be facilitated.

In some embodiments, the display apparatus provided in the embodiments of the present disclosure may be: a projector, a 3D printer, a virtual reality device, a mobile phone, a tablet, a television, a monitor, a laptop, a digital album, a navigator, a smart watch, a fitness wristband, a personal digital assistant, or any other product or component having a display function. The display apparatus includes, but is not limited to: a radio frequency unit, a network module, an audio output/input unit, a sensor, a display unit, a user input unit, an interface unit, a control chip, or the like. Optionally, the control chip is a central processing unit, a digital signal processor, a system on chip (SoC), or the like. For example, the control chip may further include a memory, a power module, or the like, and power supply and signal input/output functions are realized through additionally wires, signal lines, and the like. For example, the control chip may further include a hardware circuit, a computer-executable code, or the like. The hardware circuit may include a conventional very large scale integrated (VLSI) circuit or a gate array, or an existing semiconductor such as a logic chip, a transistor, or any other discrete element. The hardware circuit may further include a field-programmable gate array, a programmable array logic, a programmable logic device, or the like. In addition, it will be understood by those skilled in the art that the above-described structures do not constitute any limitation to the display apparatus provided in the embodiments of the present disclosure. In other words, the display apparatus provided in the embodiments of the present disclosure may include more or fewer components than described, or a combination of some components, or a different arrangement of components.

Although the present disclosure has described preferred embodiments, it will be understood that those skilled in the art may make various changes and variations to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. Therefore, if such modifications and variations to the embodiments of the present disclosure are within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to encompass such modifications and variations.