阅读说明：本技术 一种显示面板 (Display panel ) 是由 赵玲 张伟闵 肖军城 于 2020-04-27 设计创作，主要内容包括：本申请公开了一种显示面板,显示面板包括信号线组、驱动模块以及与所述信号线组位于不同膜层的连接线组,驱动模块设置于信号线组沿第一方向的侧部,连接线组与驱动模块和信号线组电连接；连接线组包括至少两条沿第一方向设置的连接线,连接线组中的第一连接线的长度大于第二连接线的长度,并且第一连接线的宽度大于第二连接线的宽度。连接线组中长度越长的连接线,该连接线的宽度越大,以减小各连接线之间的阻值差异,从而减小信号传输过程中受到的阻抗的差异,防止面内显示出现水平横纹等问题。(The application discloses a display panel, which comprises a signal wire group, a driving module and a connecting wire group, wherein the connecting wire group and the signal wire group are positioned on different films; the connecting line group comprises at least two connecting lines arranged along a first direction, the length of the first connecting line in the connecting line group is greater than that of the second connecting line, and the width of the first connecting line is greater than that of the second connecting line. The longer connecting wire of length in the connecting wire group, the width of this connecting wire is bigger to reduce the resistance difference between each connecting wire, thereby reduce the difference of the impedance that receives in the signal transmission process, prevent that horizontal striae scheduling problem appears in the face demonstration.)

1. A display panel is characterized by comprising a signal wire group, a driving module and a connecting wire group, wherein the connecting wire group is positioned on different films from the signal wire group, the driving module is arranged on the side part of the signal wire group along a first direction, and the connecting wire group is electrically connected with the driving module and the signal wire group;

the connecting line group comprises at least two connecting lines arranged along a first direction, all the connecting lines are arranged side by side and at intervals, the length of a first connecting line in the connecting line group is greater than that of a second connecting line, and the width of the first connecting line is greater than that of the second connecting line.

2. The display panel according to claim 1, wherein the signal line group comprises at least two signal lines arranged along the second direction, all the signal lines are arranged at intervals along the first direction, and each of the connection lines corresponds to and is electrically connected with one of the signal lines.

3. The display panel according to claim 2, wherein a distance between a first signal line in the signal line group and a driving module in the first direction is greater than a distance between a second signal line in the signal line group and the driving module in the first direction, and wherein a width of the first signal line is greater than a width of the second signal line.

4. The display panel according to claim 3, wherein the first connection line is electrically connected to the first signal line, and wherein the second connection line is electrically connected to the second signal line.

5. The display panel according to claim 4, wherein an insulating film layer is provided between the connection line group and the signal line group, and the connection line is electrically connected to the signal line group through a via penetrating the insulating film layer.

6. The display panel according to claim 5, wherein a sum of horizontal cross-sectional areas of all the through-holes between the first signal line and the first connection line is larger than a sum of horizontal cross-sectional areas of all the through-holes between the second signal line and the second connection line.

7. The display panel according to claim 6, wherein the number of through holes between the first signal line and the first connection line is larger than the number of through holes between the second signal line and the second connection line.

8. The display panel according to claim 6, wherein an aperture of a through hole between the first connection line and the first signal line is larger than an aperture of a through hole between the second signal line and the second connection line.

9. The display panel according to claim 1, wherein the connection line groups are provided in a plurality of groups, and the number of connection lines in each of the connection line groups is the same as the number of signal lines in the signal line group.

10. The display panel according to claim 1, wherein the driving module comprises a GOA driving unit in one-to-one correspondence with and electrically connected to the connection lines.

Technical Field

The application relates to the technical field of display, in particular to a display panel.

Background

In 8K high-resolution display products, a plurality of clock signal lines are usually provided to share in-plane signal transmission, the GOA units are electrically connected to the clock signal lines through connecting lines, and the high-resolution display products have high and sensitive requirements on the impedance of the clock signal lines, so that the high-resolution display products are more severe for low-resolution products with relatively low resistance difference between different clock signal lines.

However, in the existing 8K high-resolution display products, the lengths of the connecting lines connecting the clock signal lines and the GOA units are different, so that the resistances of the connecting lines are different, and the large impedance difference in the signal transmission process easily causes the problems of horizontal stripes in the in-plane display, and the like.

Disclosure of Invention

In a first aspect, an embodiment of the present application provides a display panel to solve the technical problem that in an existing 8K high-resolution display product, lengths of connecting lines connecting a clock signal line and each GOA unit are different, so that resistances of the connecting lines are different, and a large impedance difference in a signal transmission process easily causes horizontal stripes to appear in an in-plane display.

In order to solve the above problems, the technical scheme provided by the invention is as follows:

a display panel comprises a signal wire group, a driving module and a connecting wire group, wherein the connecting wire group is located on different film layers from the signal wire group, the driving module is arranged on the side part of the signal wire group along a first direction, and the connecting wire group is electrically connected with the driving module and the signal wire group;

the connecting line group comprises at least two connecting lines arranged along a first direction, all the connecting lines are arranged side by side and at intervals, the length of a first connecting line in the connecting line group is greater than that of a second connecting line, and the width of the first connecting line is greater than that of the second connecting line.

In some embodiments, the signal line group includes at least two signal lines arranged along the second direction, all the signal lines are arranged at intervals along the first direction, and each of the connection lines corresponds to and is electrically connected with one of the signal lines.

In some embodiments, a distance between a first signal line in the signal line group and the driving module along the first direction is greater than a distance between a second signal line in the signal line group and the driving module along the first direction, and a width of the first signal line is greater than a width of the second signal line.

In some embodiments, the first connection line is electrically connected to the first signal line, and the second connection line is electrically connected to the second signal line.

In some embodiments, an insulating film layer is disposed between the connection line group and the signal line group, and the connection line is electrically connected to the signal line group through a via penetrating through the insulating film layer.

In some embodiments, a sum of the areas of the horizontal cross sections of all the through holes between the first signal line and the first connection line is larger than a sum of the areas of the horizontal cross sections of all the through holes between the second signal line and the second connection line.

In some embodiments, the number of vias between the first signal line and the first connection line is greater than the number of vias between the second signal line and the second connection line.

In some embodiments, an aperture of the through hole between the first connection line and the first signal line is larger than an aperture of the through hole between the second signal line and the second connection line.

In some embodiments, the connection line groups are provided in a plurality of groups, and the number of connection lines in each connection line group is the same as the number of signal lines in the signal line group.

In some embodiments, the driving module includes a GOA driving unit in one-to-one correspondence with and electrically connected to the connection lines.

The beneficial effects of the invention application are as follows: the longer connecting wire of length in the connecting wire group, the width of this connecting wire is bigger to the area of contact between this connecting wire and the signal line that corresponds is bigger, with the resistance difference that reduces between each connecting wire and the contact impedance between the longer connecting wire of length and the signal line that corresponds to reduce the difference of the impedance that receives in the signal transmission process, prevent that the in-plane shows problem such as horizontal striation.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

FIG. 1 is a schematic horizontal structure diagram of a display panel according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a signal line group, a connection line group and a driving module according to a first embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view illustrating a display panel according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a signal line group, a connection line group and a driving module according to a second embodiment of the present invention.

Reference numerals:

10. a substrate; 20. a signal line group; 21. a first signal line; 22. a second signal line; 30. a drive module; 31. a GOA driving unit; 40. connecting a wire group; 41. a first connecting line; 42. a second connecting line; 50. a display area; 60. a wiring area; 70. an insulating film layer; 71. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The invention aims at the technical problems that in the existing 8K high-resolution display products, the lengths of connecting wires for connecting a clock signal wire and GOA units are different, so that the resistance values of the connecting wires are different, and the horizontal transverse stripes of in-plane display are easily caused by large impedance difference in the signal transmission process.

A display panel, as shown in FIG. 1, includes a substrate 10, a signal line group 20 disposed on the substrate 10, a driving module 30, and a connection line group 40 located on a different layer from the signal line group 20.

Specifically, the display panel has a display area 50 and a wiring area 60 disposed around at least one side of the display area 50, and the signal line group 20, the driving module 30 and the signal line group 20 are all located in the wiring area 60, so as to transmit driving signals to the display units located in the display area 50.

In fig. 1, the signal line group 20, the driving module 30, and the connection line group 40 are provided only on one side of the display panel, but in actual practice, the signal line group 20, the driving module 30, and the connection line group 40 may be provided on all sides of the display panel.

Specifically, the signal lines in the signal line group 20 may be used to transmit signals, one end of the connection lines in the connection line group 40 is electrically connected to the driving module 30, and the other end of the connection lines is electrically connected to the signal line group 20, so as to transmit the signals output by the signal line group 20 to the driving module 30.

Specifically, as shown in fig. 2, the driving module 30 is disposed at a side of the signal line group 20 along a first direction, the connection line group 40 includes at least two connection lines disposed along the first direction, all the connection lines are disposed side by side and spaced apart from each other, a length of a first connection line 41 in the connection line group 40 is greater than a length of a second connection line 42, and a width of the first connection line 41 is greater than a width of the second connection line 42.

For a metal line made of a certain material, the longer the length of the metal line, the higher the resistance of the metal line, and the wider the width of the metal line, the lower the resistance of the metal line; by increasing the width of the first connecting lines 41 with longer lengths, the resistance of the first connecting lines 41 is reduced, that is, the width of the connecting lines is larger the longer the connecting lines in the connecting line group 40 are, so that the impedance difference between different connecting lines in the signal transmission process is reduced, and the problems of horizontal stripes and the like of in-plane display are prevented.

In fig. 2, the entire shape of the connecting line is illustrated as a straight line, but in actual practice, the entire shape of the connecting line may be a curved line, a broken line, a wavy line, or the like.

Specifically, the signal line group 20 includes at least two signal lines arranged along the second direction, all the signal lines are arranged at intervals along the first direction, each of the connection lines corresponds to and is electrically connected to one of the signal lines, the same or different signals are transmitted to the driving module 30 through a plurality of signal lines in a time-sharing or segmented manner, and the in-plane load of the display panel during signal transmission is shared through a plurality of signal lines.

It should be noted that the first direction is not parallel to the second direction, and the first direction may be perpendicular to the second direction, for example, the first direction is a transverse direction, and the second direction is a longitudinal direction; the first direction may not be perpendicular to the second direction.

Specifically, the distance between the first signal line 21 in the signal line group 20 and the driving module 30 along the first direction is greater than the distance between the second signal line 22 in the signal line group 20 and the driving module 30 along the first direction, and the width of the first signal line 21 is greater than the width of the second signal line 22.

It should be noted that, the larger the distance between the signal line and the driving module 30 is, the larger the impedance received by the signal line in the process of transmitting the signal in the signal line to the driving module 30 is, and the width of the signal line in the signal line group 20 is adjusted so that the width of the signal line farther from the driving module 30 is larger, thereby further reducing the difference of the impedance received in the process of transmitting the signal.

Fig. 2 only shows the case where all the connection lines have the same length, and the lengths of the connection lines may be different in actual practice.

Specifically, the first connection line 41 is electrically connected to the first signal line 21, and the second connection line 42 is electrically connected to the second signal line 22.

It should be noted that the longest connecting line in the connecting line group 40 corresponds to and is electrically connected to the widest signal line in the signal line group 20, the second longest connecting line in the connecting line group 40 corresponds to and is electrically connected to the second widest signal line in the signal line group 20, and so on, so as to further reduce the difference in impedance suffered by the signal on each signal line in the process of transmitting the signal to the driving module 30.

Specifically, the connection line groups 40 are provided with a plurality of groups, and the number of connection lines in each connection line group 40 is the same as the number of signal lines in the signal line group 20.

Specifically, the driving module 30 includes GOA driving units 31 corresponding to the connection lines one to one and electrically connected to the connection lines, that is, the number of the GOA driving units 31 is the same as the number of the connection lines, and the signals on the signal lines are transmitted to the corresponding GOA driving units 31 through the corresponding connection lines.

As shown in fig. 2 and 3, an insulating film 70 is disposed between the connection line group 40 and the signal line group 20, and the connection line is electrically connected to the signal line group 20 through a via hole 71 penetrating through the insulating film 70.

It should be noted that the insulating film layer 70 may have a single-layer or multi-layer structure, and the material for preparing the insulating film layer 70 may be one or more of silicon nitride and silicon oxide.

Specifically, the sum of the horizontal cross-sectional areas of all the through holes 71 between the first signal line 21 and the first connection line 41 is larger than the sum of the horizontal cross-sectional areas of all the through holes 71 between the second signal line 22 and the second connection line 42.

It should be noted that, the longer the connecting line in the connecting line group 40, the larger the total area of the horizontal cross sections of all the through holes 71 between the connecting line and the corresponding signal line, so as to increase the contact area between the connecting line and the corresponding signal line, and reduce the contact impedance between the connecting line and the signal line, thereby further reducing the difference in impedance experienced by the signal on each signal line during transmission to the driving module 30.

In one embodiment, the number of through holes 71 between the first signal line 21 and the first connection line 41 is greater than the number of through holes 71 between the second signal line 22 and the second connection line 42.

It should be noted that the total area of the horizontal cross sections of all the through holes 71 between the signal lines and the corresponding connecting lines is increased by increasing the number of the through holes 71 between the signal lines and the corresponding connecting lines.

In another embodiment, as shown in fig. 4, the aperture of the through hole 71 between the first connection line 41 and the first signal line 21 is larger than the aperture of the through hole 71 between the second signal line 22 and the second connection line 42.

It should be noted that the total area of the horizontal cross sections of all the through holes 71 between the signal lines and the corresponding connecting lines is increased by increasing the aperture of the through hole 71 between the signal line and the corresponding connecting line.

It should be noted that the aperture of the through holes 71 between the first connection line 41 and the first signal line 21 may be larger than the aperture of the through holes 71 between the second signal line 22 and the second connection line 42, and the number of the through holes 71 between the first signal line 21 and the first connection line 41 may be larger than the number of the through holes 71 between the second signal line 22 and the second connection line 42, so as to increase the total area of the horizontal cross sections of all the through holes 71 between the signal lines and the corresponding connection lines.

The invention has the beneficial effects that: the longer the connecting wire in the connecting wire group 40, the larger the width of the connecting wire, and the larger the contact area between the connecting wire and the corresponding signal wire, so as to reduce the resistance difference between the connecting wires and reduce the contact impedance between the longer connecting wire and the corresponding signal wire, thereby reducing the difference of the impedance received in the signal transmission process, and preventing the horizontal stripes and other problems in the in-plane display.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The principle and the implementation of the present application are explained by applying specific examples, and the above description of the embodiments is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.