CN114783285A

CN114783285A - Display panel and display device

Info

Publication number: CN114783285A
Application number: CN202210350786.4A
Authority: CN
Inventors: 杨程
Original assignee: Shanghai Tianma Microelectronics Co Ltd
Current assignee: Shanghai Tianma Microelectronics Co Ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-07-22

Abstract

The embodiment of the invention discloses a display panel and a display device, wherein the display panel comprises: the first substrate comprises a first surface and a second surface which are opposite to each other and at least one side surface which connects the first surface and the second surface, the side surface is provided with a plurality of notch structures which extend from the edge of the substrate to the center of the substrate, the notch structures penetrate through the first substrate along the direction which is perpendicular to the first surface, the notch structures comprise openings and bottom surfaces along the extending direction of the notches, and at least two notch structures are different along the direction which is parallel to the first surface; a signal line disposed on the first surface of the first substrate; and the fan-out circuit area is arranged on the second surface of the first substrate, and the signal wire extends from the first surface to the bottom surface of the notch structure and extends to the fan-out circuit area. The display panel provided by the embodiment of the invention can protect the signal lines from external interference while improving the screen occupation ratio, and the notch structure is matched with the signal lines, so that the flexibility of circuit layout can be improved.

Description

Display panel and display device

Technical Field

The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.

Background

With the progress of display technology, a full-screen has become a hot spot pursued in the market, and in order to realize a large screen occupation ratio, a narrow frame is provided, and signal routing lines can extend from the front side to the back side of the display panel and then are bound with a driving circuit on the back side.

In the prior art, the signal traces may be extended to the back surface of the display panel by coating silver paste, or the signal traces may be connected to the back surface through holes on the substrate by punching holes on the substrate. However, the signal wires and the silver paste have a certain thickness, so that real seamless splicing cannot be realized, the signal wires are mostly metal layers, the signal wires exposed on the side edges are easy to oxidize, scratch or wear, the manufacturing cost is high, and short circuits are easy to occur among the wires; the punching mode is high in cost, the thickness and the size of the hole are difficult to control, the signal wiring cannot be uniformly extended on the hole, particularly the inner wall, the thickness of the signal wiring is different, wiring resistance is increased, and signal transmission is affected.

Disclosure of Invention

The embodiment of the invention provides a display panel and a display device, and aims to solve the problems that when existing signal wiring extends to the back of the display panel, the signal wiring is easy to oxidize and wear, high in cost, uncontrollable in thickness and the like.

An embodiment of the present invention provides a display panel, including:

a first substrate comprising a first surface and a second surface facing away from each other and at least one side surface connecting the first surface and the second surface, the side surface being provided with a plurality of notch structures extending from an edge of the substrate towards a center of the substrate, the notch structures extending through the first substrate in a direction perpendicular to the first surface, the notch structures comprising an opening and a bottom surface in a direction of notch extension, at least two of the notch structures being different in a direction parallel to the first surface;

a signal line disposed on a first surface of the first substrate;

and the fan-out circuit area is arranged on the second surface of the first substrate, and the signal wire extends from the first surface to the bottom surface of the notch structure and extends to the fan-out circuit area.

Based on the same inventive concept, the embodiment of the invention also provides a display device, which comprises the display panel.

According to the display panel provided by the embodiment of the invention, the plurality of notch structures are arranged on the side surface of the first substrate, so that the signal lines extend from the first surface of the first substrate to the notch structures and extend to the fan-out circuit region on the second surface of the first substrate along the bottom surface of the notch structures, sufficient picture display space is reserved for the first surface of the first substrate, the screen occupation ratio of the display panel is favorably improved, and the narrow frame design is realized; the signal lines are positioned in the notch structure on the side surface of the first substrate, so that the notch structure can protect the signal lines from being interfered by the outside, the phenomena of oxidation, scratch or abrasion are avoided, the signal lines cannot be interfered with one another, and the reliability of the display panel can be improved; the shape and the size of the notch structure can be regulated according to actual requirements, so that the thickness difference of each signal wire is small, the signal transmission performance of each signal wire can be balanced, and the display effect of the display panel is improved. On the basis, at least two notch structures are different in the direction parallel to the first surface, so that different notch structures can be matched with signal lines with different line widths or different functions, and the flexibility of notch structure design and circuit layout can be improved.

Drawings

While the drawings used in the description of the embodiments or prior art will be described briefly to more clearly illustrate the embodiments or prior art, it is obvious that the drawings in the description will be some specific embodiments of the present invention, and it will be obvious to those skilled in the art that the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention can be extended and extended to other structures and drawings without doubt being within the scope of the claims of the present invention.

Fig. 1 is a schematic front top view of a display panel according to an embodiment of the present invention;

fig. 2 is a schematic back-side plan view of a display panel according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken along section line AA' of FIG. 1;

FIG. 4 is a schematic top view of another display panel according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a top view of a display panel according to another embodiment of the present invention;

FIG. 6 is a schematic diagram of a top view of a display panel according to another embodiment of the present invention;

FIG. 7 is a schematic diagram of a top view of a display panel according to another embodiment of the present invention;

FIG. 8 is a schematic diagram illustrating a top view of a display panel according to another embodiment of the present invention;

FIG. 9 is a schematic diagram illustrating a top view of a display panel according to another embodiment of the present invention;

FIG. 10 is a schematic diagram illustrating a top view of a display panel according to another embodiment of the present invention;

FIG. 11 is a schematic diagram illustrating a top view of a display panel according to another embodiment of the present invention;

FIG. 12 is a schematic diagram illustrating a top view of a display panel according to another embodiment of the present invention;

fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and completely by embodiments with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the basic idea disclosed and suggested by the embodiments of the present invention, are within the scope of the present invention.

In view of the problems mentioned in the background, an embodiment of the present invention provides a display panel including: the first substrate comprises a first surface and a second surface which are opposite to each other and at least one side surface which connects the first surface and the second surface, the side surface is provided with a plurality of notch structures which extend from the edges of the substrate to the center of the substrate, the notch structures penetrate through the first substrate along the direction which is perpendicular to the first surface, the notch structures comprise openings and bottom surfaces along the extending direction of the notches, and at least two notch structures are different along the direction which is parallel to the first surface; a signal line disposed on the first surface of the first substrate; and the fan-out circuit area is arranged on the second surface of the first substrate, and the signal line extends from the first surface to the bottom surface of the notch structure and extends to the fan-out circuit area.

According to the display panel provided by the embodiment of the invention, the plurality of notch structures are arranged on the side surface of the first substrate, so that the signal lines extend from the first surface of the first substrate to the notch structures and extend to the fan-out circuit region on the second surface of the first substrate along the bottom surface of the notch structures, sufficient picture display space is reserved for the first surface of the first substrate, the screen occupation ratio of the display panel is favorably improved, and the narrow frame design is realized; the signal wires are positioned in the notch structure on the side surface of the first substrate, so that the notch structure can protect the signal wires from being interfered by the outside, the phenomena of oxidation, scratch or abrasion are avoided, the signal wires cannot be interfered with one another, and the reliability of the display panel can be improved; the shape and the size of the notch structure can be regulated according to actual requirements, so that the thickness difference of each signal wire is small, the signal transmission performance of each signal wire can be balanced, and the display effect of the display panel is improved. On this basis, the arrangement is along being on a parallel with first surface direction, and at least two notch structures have the difference, can make different notch structures and different linewidths or the signal line phase-match of different functions, can improve the flexibility of notch structure design and circuit layout.

The foregoing is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be described in detail below with reference to the accompanying drawings in the embodiment of the present invention.

Exemplarily, fig. 1 is a schematic front top view of a display panel according to an embodiment of the present invention, fig. 2 is a schematic back top view of a display panel according to an embodiment of the present invention, fig. 3 is a schematic cross-sectional view along a sectional line AA' in fig. 1, and exemplarily, referring to fig. 1 to fig. 3, a display panel 10 according to an embodiment of the present invention includes: a first substrate 100, the first substrate 100 comprising a first surface 110 and a second surface 120 facing away from each other and at least one side 130 connecting the first surface 110 and the second surface 120, the side 130 being provided with a plurality of notch structures 140 extending from an edge of the substrate towards a center of the substrate, the notch structures 140 penetrating the first substrate 100 in a direction perpendicular to the first surface 110, the notch structures 140 comprising an opening and a bottom surface in the direction of the notch extension, at least two notch structures 140 being different in a direction parallel to the first surface 110; a signal line 200 disposed on the first surface 110 of the first substrate 100; the fan-out circuit region 300 is disposed on the second surface 120 of the first substrate 100, and the signal line 200 extends from the first surface 110 to a bottom surface of the recess structure 140 and extends to the fan-out circuit region 300.

Illustratively, the display panel 10 provided by the embodiment of the present invention includes a first substrate 100, signal lines 200, and a fan-out circuit area 300. The first substrate 100 may be an array substrate, the first substrate 100 includes a first surface 110, a second surface 120, and at least one side surface 130, where the first surface 110 is a light emitting surface of the display panel 10, the second surface 120 is a backlight surface of the display panel 10, the side surface 130 of the first substrate 100 is provided with a plurality of notch structures 140 extending from an edge of the substrate to a center of the substrate, and the notch structures 140 penetrate through the first substrate 100 along a direction perpendicular to the first surface 110, and specifically, the notch structures 140 include an opening and a bottom surface along a direction in which the notch extends.

A plurality of signal lines 200 are disposed on the first surface 110 of the first substrate 100, a fan-out circuit area 300 is disposed on the second surface 120 of the first substrate 100, the signal lines 200 extend from the first surface 110 of the first substrate 100 to the notch structure 140, and extend along the bottom surface of the notch structure 140 to the fan-out circuit area 300 on the back surface of the first substrate 100, i.e., on the second surface 120, so that the signal lines 200 are electrically connected to the flexible circuit board 500 or the driving chip 600 on the second surface 120 through the fan-out circuit area 300, and electrical signals generated by the flexible circuit board 500 or the driving chip 600 are transmitted to the circuit structure or the sub-pixels 400 on the first substrate 100 through the fan-out circuit area 300 and the signal lines 200, thereby realizing image display. Since the fan-out circuit area 300 is located on the backlight surface of the display panel 10, i.e. the second surface 120, the first surface 110 has more space for arranging the sub-pixels 400 for displaying pictures, which is beneficial to improving the screen occupation ratio of the display panel 10 and realizing the narrow frame design.

It can be understood that, in order to facilitate the arrangement of different signal lines 200, with signal lines 200 with different line widths or different functions, parameters such as shapes, sizes, positions, and the like of different notch structures 140 may be different, that is, at least two notch structures 140 are different along a direction parallel to the first surface 110, so that the notch structures 140 can be matched with the signal lines 200, and the flexibility of the design and the circuit layout of the notch structures 140 is improved.

Since the signal lines 200 are located in the openings of the recess structures 140 on the side of the first substrate 100, that is, in the recess structures 140, the recess structures 140 can protect the signal lines 200 from external interference, thereby avoiding oxidation, scratch or abrasion caused by exposure to the edge region, and one signal line 200 is located in one recess structure 140, so that the signal lines 200 do not interfere with each other and cause short circuit. Compare the mode of coating silver thick liquid on the signal line among the prior art, set up signal line 200 in the inside of notch structure 140, need not the concatenation of silver thick liquid and signal line 200, can improve display panel 10's reliability, and the cost is lower. In addition, the shape and size of the notch structure 140 can be adjusted according to actual requirements, so that the thickness difference of each signal line 200 is small, the signal transmission performance of each signal line 200 can be balanced, and the display effect of the display panel 10 is improved.

It should be noted that, the specific location and number of the notch structures 140 in the embodiment of the invention are not limited, and those skilled in the art can design the notch structures according to the actual arrangement of the signal lines 200 in the display panel 10, as long as each signal line 200 is located in the opening of the notch structure 140 and extends to the back of the display panel 10 through the bottom surface of the notch structure 140.

According to the display panel provided by the embodiment of the invention, the plurality of notch structures are arranged on the side surface of the first substrate, so that the signal lines extend from the first surface of the first substrate to the notch structures and extend to the fan-out circuit region on the second surface of the first substrate along the bottom surface of the notch structures, sufficient picture display space is reserved for the first surface of the first substrate, the screen occupation ratio of the display panel is favorably improved, and the narrow frame design is realized; the signal wires are positioned in the notch structure on the side surface of the first substrate, so that the notch structure can protect the signal wires from being interfered by the outside, the phenomena of oxidation, scratch or abrasion are avoided, the signal wires cannot be interfered with one another, and the reliability of the display panel can be improved; the shape and the size of the notch structure can be regulated according to actual requirements, so that the thickness difference of each signal wire is small, the signal transmission performance of each signal wire can be balanced, and the display effect of the display panel is improved. On the basis, at least two notch structures are different in the direction parallel to the first surface, so that different notch structures can be matched with signal lines with different line widths or different functions, and the flexibility of notch structure design and circuit layout can be improved.

Fig. 4 is a schematic front top view of another display panel provided in an embodiment of the present invention, fig. 5 is a schematic front top view of another display panel provided in an embodiment of the present invention, and referring to fig. 4 and fig. 5, optionally, at least two notch structures 140 have different shapes.

For example, referring to fig. 4 and 5, different notch structures 140 may have different shapes, and the shape of the notch structures 140 may be any shape such as trapezoid, triangle, semicircle, or rectangle. The notch structures 140 with different shapes can be correspondingly provided with signal lines 200 with different line widths or different functions, so that the arrangement of different signal lines 200 is facilitated, and the mutual interference among different signal lines 200 is avoided; under the condition of ensuring that the size of the notch structure 140 is matched with the line width of the signal line 200, the same signal line 200 can be arranged in different notch structures 140, so as to improve the flexibility of the design and the circuit layout of the notch structure 140.

Referring to fig. 4, alternatively, the shape of the recess structures 140 in the same side 130 is the same, so that the process is simplified and the production efficiency is improved. The shape of the notch structures 140 may be the same or different in different sides 130. Referring to fig. 5, the shape of the notch 140 in the same side 130 may also be different, and one skilled in the art can set the shape according to practical situations, which is not limited by the embodiment of the present invention.

Fig. 6 is a schematic front top view of another display panel provided in an embodiment of the invention, as shown in fig. 6, optionally, widths of bottom surfaces of at least two recess structures 140 are different along a first direction X, where the first direction X is parallel to the first surface 110 and perpendicular to an extending direction of the recess.

Specifically, different notch structures 140 may have different sizes, i.e., bottom widths, as shown in fig. 6, d1 > d2 > d3 > d4, and signal lines 200 with different line widths or different functions may be correspondingly disposed in the notch structures 140 with different bottom widths, so that the sizes of the notch structures 140 are matched with the line widths of the signal lines 200, thereby facilitating the arrangement of different signal lines 200; under the condition of ensuring that the size of the notch structure 140 is matched with the line width of the signal line 200, the same signal line 200 can be arranged in the notch structures 140 with different bottom surface widths, so that the flexibility of the design and the circuit layout of the notch structure 140 is improved.

Referring to fig. 6, it should be noted that the first direction X is an opposite direction, and is related to the extending direction of the notch structure 140 and the position of the side surface 130 where the notch structure 140 is located. Due to the different extending directions of the notch structures 140 located at different sides 130, the first directions X in the different sides 130 may intersect and may be parallel.

Referring to fig. 6, alternatively, the widths of the bottom surfaces of the notch structures 140 in the same side surface 130 are the same, and the widths of the bottom surfaces of the notch structures 140 in different side surfaces 130 are different along a first direction X, which is parallel to the first surface 110 and perpendicular to the notch extending direction.

The notch structures 140 in the same side 130 have the same bottom width, and the notch structures 140 in different side 130 have different bottom widths (d1 > d2 > d3 > d4), which is not only beneficial to the arrangement of different signal lines 200, but also can simplify the process and improve the production efficiency. It is understood that in other embodiments, the notch structures 140 in the same side 130 may have different bottom surface widths (refer to fig. 5), and the notch structures 140 in different side 130 may have the same bottom surface width (refer to fig. 4), so as to improve the flexibility of the design and layout of the notch structures 140.

Optionally, the width of the bottom surface of the recess structure 140 is greater than the line width of the signal line 200 extending therein along a first direction X, which is parallel to the first surface 110 and perpendicular to the recess extending direction.

In order to make the signal lines 200 extend uniformly inside the recess structure 140 and ensure normal transmission of signals, the width of the bottom surface of the recess structure 140 needs to be greater than the line width of the signal lines 200 extending therein, so as to reserve a sufficient space for the signal lines 200 and avoid the influence of process variations on the actual preparation of the signal lines 200.

Referring to fig. 2 and 6, alternatively, the signal line 200 includes a first signal line 210 and a second signal line 220 transmitting different signals; the plurality of notch structures 140 includes a first notch structure 141 and a second notch structure 142, the first signal line 210 extends to the fan-out circuit region 300 through the first notch structure 141, and the second signal line 220 extends to the fan-out circuit region 300 through the second notch structure 142.

Specifically, the signal lines 200 for transmitting different signals may be correspondingly disposed inside different recessed structures 140 and extend to the fan-out circuit area 300 through different extending paths, for example, the first signal line 210 extends to the fan-out circuit area 300 through the first recessed structure 141, and the second signal line 220 extends to the fan-out circuit area 300 through the second recessed structure 142, which is not only beneficial to the arrangement of the signal lines 200, but also can avoid mutual interference between different signal lines 200, ensure normal transmission of signals, and improve reliability and stability of the display panel 10.

Referring to fig. 6, optionally, the first substrate 100 includes a first side 131 and a second side 132, the first side 131 and the second side 132 are adjacently disposed or oppositely disposed, the first side 131 connects the first surface 110 and the second surface 120, and the second side 132 connects the first surface 110 and the second surface 120; the first side 131 is provided with a plurality of first notch structures 141 and the second side 132 is provided with a plurality of second notch structures 142.

Specifically, different signal lines 200 may be located on different sides 130 of the first substrate 100, and different notch structures 140 having different signal lines 200 extending therein are located on different sides 130 of the first substrate 10. Referring to fig. 6, the first signal line 210 is located on the first side 131, the second signal line 220 is located on the second side 132, the first notch structure 141 is located on the first side 131, and the second notch structure 142 is located on the second side 132, so that the arrangement of the signal lines 200 matches the position of the notch structure 140, which facilitates the circuit layout and simultaneously avoids the mutual interference between different signal lines 200.

Referring to fig. 5, optionally, the same side 130 of the first substrate 100 is provided with a first notch structure 141 and a second notch structure 142.

Specifically, different signal lines 200 may be located on the same side 130 of the first substrate 100, and different notch structures 140 having different signal lines 200 extending therein may also be located on the same side 130 of the first substrate 10. Referring to fig. 5, the first signal line 210 and the second signal line 220 are located on the same side 130, and the first recess structure 141 and the second recess structure are located on the same side 130, so that the signal line 200 is arranged to match the position of the recess structure 140, thereby facilitating the circuit layout.

Referring to fig. 6, optionally, the line width of the first signal line 210 is smaller than the line width of the second signal line 220; the width of the bottom surface of the first recess structure 141 is smaller than that of the second recess structure 142 along a first direction X, which is parallel to the first surface 110 and perpendicular to the recess extending direction.

Since the line width of the first signal line 210 is smaller than the line width of the second signal line 220, the bottom width of the first recess structure 141 needs to be smaller than the bottom width of the second recess structure 142, so that the line width of the signal line 200 matches the size of the recess structure 140, and different signal lines 200 can uniformly extend inside different recess structures 140, thereby ensuring normal transmission of signals. The line width of the second signal line 220 is greater than the line width of the first signal line 210, and the line resistance of the second signal line 220 is less than the line resistance of the first signal line 210, which is favorable for reducing the edge line resistance.

On the basis of the above embodiment, optionally, the first signal line 210 includes a data line, and the second signal line 220 includes a power signal line or a driving signal line; alternatively, the first signal line 210 includes a driving signal line, and the second signal line 220 includes a power supply signal line.

Specifically, the first signal line 210 may be a data line extending to the fan-out circuit region 300 through the first notch structure 141, the second signal line 200 may be a power signal line such as PVDD or PVEE or a driving signal line of a shift register, and the second signal line 220 extends to the fan-out circuit region 300 through the second notch structure 142. Alternatively, the first signal line 210 may be a driving signal line, and the second signal line 220 may be a power supply signal line. Different signal lines 200 adopt different notch structures 140, so that crosstalk between different signal lines 200 can be avoided, circuit arrangement is facilitated, and the signal lines 200 can be matched with the notch structures 140.

It should be noted that the first signal line 210 and the second signal line 220 are not limited to a data line, a power signal line, or a driving signal line, and may also be routed for other signals, and those skilled in the art may set the lines according to actual requirements.

Fig. 7 is a schematic front top view of another display panel provided in an embodiment of the invention, as shown in fig. 7, optionally, the concave-recess structure 140 includes a first sub-concave-recess 11 and at least one second sub-concave-recess 12 extending from the first sub-concave-recess 11 to the center of the substrate; the openings of the second sub-recesses 12 are disposed on the bottom surfaces of the first sub-recesses 11, the opening width D2 of the second sub-recesses 12 is smaller than the bottom surface width D1 of the first sub-recesses 11 along the first direction X, the first direction X is parallel to the first surface 110 and perpendicular to the recess extending direction, and the signal lines 200 extend from the bottom surfaces of the second sub-recesses 12 to the fan-out circuit region 300.

For example, referring to fig. 7, in the present embodiment, the notch structure 140 is a double-groove structure, that is, the notch structure 140 includes a first sub-notch 11 and a second sub-notch 12, in an actual process, a first sub-notch 11 having a bottom surface and an opening is formed on the side surface 130 of the first substrate 100, and then a groove is dug again from the bottom surface of the first sub-notch 11 to the center of the substrate, so as to form one or more second sub-notches 12 having a bottom surface and an opening, and in the first direction X, the opening width D2 of the second sub-notch 12 is smaller than the bottom surface width D1 of the first sub-notch 11. The signal line 200 extends from the first surface 110 to the second sub-recess 12, and extends along the bottom surface of the second sub-recess 12 to the fan-out circuit region 300 located on the second surface 120. The signal line 200 is located inside the second sub-recess 12 close to the center of the substrate in the recess structure 140, and the second sub-recess 12 can protect the signal line 200 from external interference, so as to avoid oxidation, scratch or abrasion caused by exposure to the edge region; the signal lines 200 are disposed inside the second sub-recesses 12, and sufficient accommodation space is reserved for the recess structures 140, so that the first sub-recesses 11 of the recess structures 140 can be conveniently used for splicing with other substrates, and the signal lines 200 of the two substrates are not interfered with each other after splicing.

Referring to fig. 7, on the basis of the above embodiment, optionally, along the extending direction of the notch, the depth L2 of the second sub-notch 12 is smaller than the depth L1 of the first sub-notch 11, so that the manufacturing process of the second sub-notch 12 or the notch structure 140 can be simplified, and the arrangement of the signal line 200 is also facilitated.

Fig. 8 is a schematic front top view of another display panel provided in an embodiment of the present invention, as shown in fig. 8, optionally, the display panel 10 further includes a second substrate 700, a side surface 130 of the second substrate 700 is provided with a plurality of notch structures 140 extending from an edge of the substrate to a center of the substrate, and a protrusion structure 150 is formed between two adjacent notch structures 140 in the same substrate; the side 130 of the first substrate 100 is joined to the side 130 of the second substrate 700.

Referring to fig. 8, the display panel 10 provided in this embodiment is formed by splicing the first substrate 100 and the second substrate 700, and for convenience of drawing, only a state before the first substrate 100 and the second substrate 700 are spliced is shown. The two sides 130 of the first substrate 100 and the second substrate 700 for splicing are provided with a plurality of concave structures 140 and convex structures 150. In the first substrate 100, the signal lines 200 extend from the first surface 110 to the bottom surface of the recess structure 140 and extend to the fan-out circuit region 300 of the second surface 120, and similarly, in the second substrate 700, the signal lines 200 extend from the first surface 110 of the second substrate 700 to the bottom surface of the recess structure 140 and extend to the fan-out circuit region 300 of the second surface 120. The signal lines 200 of the first substrate 100 are disposed inside the notch structure 140 of the first substrate 100, the signal lines 200 of the second substrate 700 are disposed inside the notch structure 140 of the second substrate 700, and the signal lines 200 on different substrates cannot be directly contacted after the two substrates are spliced, so that mutual interference between the signal lines 200 on different substrates can be avoided, meanwhile, the abrasion and disconnection risks of the signal lines 200 can be prevented, and the reliability of the display panel 10 is improved.

Referring to fig. 8, on the basis of the above embodiment, optionally, at the splicing position, the protruding structure 150 on the side of the first substrate 100 is inserted into the notch structure 140 on the side of the second substrate 700, and the protruding structure 150 on the side of the second substrate 700 is inserted into the notch structure 140 on the side of the first substrate 100.

Through the arrangement at the joint of the first substrate 100 and the second substrate 700, the protrusion structure 150 on the side of the first substrate 100 is connected into the notch structure 140 on the side of the second substrate 700, and the protrusion structure 150 on the side of the second substrate 700 is connected into the notch structure 140 on the side of the first substrate 100, so that on one hand, the joint distance at the joint position of the first substrate 100 and the second substrate 700 can be effectively reduced, and the overall display effect of the display panel 10 is ensured, and on the other hand, in the display panel 10 after the joint, the signal lines 200 of the first substrate 100 and the signal lines 200 of the second substrate 700 are alternately arranged, that is, a gap exists between the signal lines 200 of the first substrate 100 and the signal lines 200 of the second substrate 700, so that the mutual interference between the signal lines 200 on different substrates can be avoided, and the abrasion and the risk of disconnection of the signal lines 200 can be prevented.

Fig. 9 is a schematic front top view of another display panel provided by an embodiment of the invention, and referring to fig. 9, the protruding structures 140 on the side 130 of the first substrate 100 and the protruding structures 140 on the side 130 of the second substrate 700 may be disposed opposite to and in contact with each other at the joint regardless of the joint distance. It can be understood that, since the signal lines 200 on the first substrate 100 and the signal lines 200 on the second substrate 700 are located inside the respective notch structures 140 at the splicing position and are not in direct contact with each other, the resulting spliced display panel can also avoid mutual interference between the signal lines 200 on different substrates, and can also prevent the abrasion and disconnection risks of the signal lines 200.

Referring to fig. 8, optionally, along the first direction X, the width d5 of the protruding structure on the side 130 of the first substrate 100 is smaller than or equal to the width d6 of the recessed structure on the side 130 of the second substrate 700, the width d7 of the recessed structure on the side 130 of the first substrate 100 is greater than or equal to the width d8 of the protruding structure on the side 130 of the second substrate 700, and the first direction X is parallel to the first surface 110 and perpendicular to the extending direction of the recessed structure.

The convex structure width d5 of the side 130 of the first substrate 100 is set to be less than or equal to the concave structure width d6 of the side 130 of the second substrate 700, and the concave structure width d7 of the side 130 of the first substrate 100 is set to be greater than or equal to the convex structure width d8 of the side 130 of the second substrate 700, so that the splicing process can be simplified, the splicing distance at the splicing position of the first substrate 100 and the second substrate 700 is reduced, seamless splicing is facilitated, and the display effect is improved. In addition, when the width d5 of the protrusion structure on the side 130 of the first substrate 100 is smaller than the width d6 of the notch structure on the side 130 of the second substrate 700, and the width d7 of the notch structure on the side 130 of the first substrate 100 is larger than the width d8 of the protrusion structure on the side 130 of the second substrate 700, the scratch and the disconnection between the signal lines 200 on different substrates during the splicing process caused by process deviation can be avoided, and the reliability of the display panel 10 is further improved.

Referring to fig. 8, optionally, the depth L5 of the protruding structure of the side 130 of the second substrate 700 is less than or equal to the depth L6 of the recess structure of the side 130 of the first substrate 100 in the direction of extension of the recess.

To simplify the joining process, reduce the joining distance at the joining position of the first substrate 100 and the second substrate 700, and achieve seamless joining, the protrusion depth L3 of the side 130 of the first substrate 100 may be less than or equal to the recess depth L4 of the side 130 of the second substrate 700, and the protrusion depth L5 of the side 130 of the second substrate 700 may be less than or equal to the recess depth L6 of the side 130 of the first substrate 100. In addition, when the depth L3 of the protrusion structure of the side 130 of the first substrate 100 is less than or equal to the depth L4 of the recess structure of the side 130 of the second substrate 700, and the depth L5 of the protrusion structure of the side 130 of the second substrate 700 is less than or equal to the depth L6 of the recess structure of the side 130 of the first substrate 100, the scratching and disconnection between the signal lines 200 on different substrates during the splicing process caused by process deviation can be avoided, and the reliability of the display panel 10 is further improved.

Fig. 10 is a schematic front top view of another display panel provided in an embodiment of the present invention, and fig. 11 is a schematic front top view of another display panel provided in an embodiment of the present invention, and referring to fig. 10 and fig. 11, optionally, a compensation sub-pixel 800 is disposed on the first surface 110 of the protrusion structure 150.

Specifically, at the joint, each protrusion structure 150 of the first substrate 100 and the second substrate 700 may be provided with a supplementary subpixel 800, so that the supplementary subpixel 800 is used as a light source at the joint, thereby eliminating the shadow effect at the joint of the first substrate 100 and the second substrate 700 and improving the overall display effect of the display panel 10.

Referring to fig. 10 and 11, on the basis of the above embodiment, optionally, at the splicing point, along the arrangement direction of the convex structures 150, the compensation sub-pixels 800 are arranged in the color order of R, G, B.

Illustratively, the supplementary sub-pixel 800 may be a red sub-pixel R, a green sub-pixel G, or a blue sub-pixel B, and the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B may be alternately arranged along the arrangement direction of the protrusion structure 140 at the joint position of the first substrate 100 and the second substrate 700 to form a display bright point, eliminate a shadow at the joint position, and improve the overall display effect of the display panel 10.

It should be noted that, along the arrangement direction of the protrusion structure 150, the compensation sub-pixels 800 are arranged in the color order of R, G, B, which is only an example and not a limitation, and a person skilled in the art may set the arrangement order of the compensation sub-pixels 800 with different light emitting colors according to practical situations.

Referring to fig. 10 and 11, optionally, a signal line 900 to which the compensation subpixel 800 is electrically connected extends from a sidewall of the bump structure 150 to the fan-out circuit region 300.

Specifically, the signal line 900 electrically connected to the compensation subpixel 800 may be disposed on a sidewall of the protrusion structure 150, and the signal line 900 extends to the fan-out circuit area 300 along the sidewall of the protrusion structure 150, so that the signal line 900 is electrically connected to the flexible circuit board 500 or the driving chip 600 on the back side of the display panel 10 through the fan-out circuit area 300, and an electrical signal generated by the flexible circuit board 500 or the driving chip 600 is transmitted to the compensation subpixel 800 through the fan-out circuit area 300 and the signal line 900, thereby implementing a picture display at the splicing position.

Fig. 12 is a schematic front top view of another display panel provided by an embodiment of the invention, as shown in fig. 12, optionally, in one side surface 130 of the first substrate 100, the concave structure 140 includes a first sub-concave 11 and at least two second sub-concave 12; in one side surface 130 of the second substrate 700, the bottom surfaces of the recess structures 140 are located on the same plane, and the depths of at least two of the protrusion structures 150 are different along the extending direction of the recess.

Exemplarily, referring to fig. 12, a plurality of notch structures 140 and protrusion structures 150 are disposed on one side surface 130 of the first substrate 100, the notch structures 140 include a first sub-notch 11 and at least two second sub-notches 12, the signal lines 200 on the first substrate 100 extend from the bottom surface of the second sub-notch 12 to the fan-out circuit region 300, and since the bottom surface of the first sub-notch 11 and the bottom surface of the second sub-notch 12 are located on different planes, the depths of the at least two protrusion structures 150 are different along the notch extending direction. The side surface 130 of the second substrate 700 spliced with the side surface 130 of the first substrate 100 is correspondingly provided with a plurality of notch structures 140 and protrusion structures 150, and the bottom surfaces of the notch structures 140 in the second substrate 700 are located on the same plane, so that the preparation process of the notch structures 140 can be simplified, and in the extending direction of the notch, the depths of at least two protrusion structures 150 in the second substrate 700 are different, so that at the splicing position, the protrusion structures 150 with different depths located on the first side surface 110 of the first substrate 100 can be correspondingly connected into the notch structures 140 of the second substrate 700, and the protrusion structures 150 with different depths located on the side surface of the second substrate 700 can be correspondingly connected into the notch structures 140 of the first substrate 100, so that the splicing distance at the splicing position of the first substrate 100 and the second substrate 700 can be reduced, the seamless splicing is facilitated, and the display effect is improved. In the spliced display panel 10, the signal lines 200 of the first substrate 100 and the signal lines 200 of the second substrate 700 are alternately arranged, that is, a gap exists between the signal lines 200 of the first substrate 100 and the signal lines 200 of the second substrate 700, so that mutual interference between the signal lines 200 on different substrates can be avoided, and meanwhile, the abrasion and disconnection risks of the signal lines 200 can be prevented. In addition, the recess structure 140 of the first substrate 100 includes at least two sub-recesses 12, which can relatively increase the number of the protrusion structures 150 in the first substrate 100, and the protrusion structures 150 of the second substrate 700 are disposed corresponding to the recess structures 140 of the first substrate 100, so that the number of the protrusion structures 150 in the second substrate 700 is increased, and the compensation sub-pixels 800 can be disposed on the first surfaces 110 of the protrusion structures 150 on both the first substrate 100 and the second substrate 700, so that the number of the compensation sub-pixels 800 is increased, thereby increasing the pixel density at the joint and further improving the display effect.

It should be noted that fig. 12 only illustrates that one recess structure 140 of the first substrate 100 includes two second sub-recesses 12, and the specific number of the second sub-recesses 12 in one recess structure 140 is not limited in the embodiment of the present invention.

Referring to fig. 12, optionally, the side 130 of the second substrate 700 includes the first protrusion structures 151 and the second protrusion structures 152 therein; the first protruding structure 151 is correspondingly inserted into the first sub-recess 11, and the second protruding structure 152 is correspondingly inserted into the second sub-recess 12; the depth L7 of the first protruding structure 151 is greater than the depth L8 of the second protruding structure 152 in the direction of the extension of the recess.

Specifically, the convex structures 150 having different depths in the side 130 of the second substrate 700 may be divided into the first convex structures 151 and the second convex structures 152, and the depth of the first convex structures 151 is greater than the depth of the second convex structures 152 in the extending direction of the recesses. Accordingly, the notch structure 140 in the side 130 of the first substrate 100 includes the first sub-notch 11 and the second sub-notch 12 having different depths, and the depth of the first sub-notch 11 is greater than the depth of the second sub-notch 12 along the notch extending direction. After the first substrate 100 and the second substrate 700 are spliced, the first protrusion structures 151 of the second substrate 700 are correspondingly connected into the first sub-recesses 11 of the first substrate 100, and the second protrusion structures 152 of the second substrate 700 are correspondingly connected into the second sub-recesses 12 of the first substrate 100, so that the splicing distance of the spliced part can be reduced, seamless splicing is facilitated, the display effect is improved, and in the spliced display panel 10, the signal lines 200 of the first substrate 100 and the signal lines 200 of the second substrate 700 are alternately arranged, mutual interference between the signal lines 200 on different substrates can be avoided, and the abrasion and disconnection risks of the signal lines 200 are prevented.

Referring to fig. 12, alternatively, a pitch D3 of adjacent first protrusion structures 151 is greater than or equal to 3PX, PX being a size of the compensation sub-pixel 800 along the first direction X.

Exemplarily, referring to fig. 12, the first substrate 100 and the second substrate 700 each include two kinds of protrusion structures 150 with different depths, and the compensation sub-pixel 800 may be disposed only on the protrusion structure 150 with a longer depth in the same substrate, that is, as shown in fig. 12, the compensation sub-pixel 800 in the second substrate 700 is only on the first protrusion structure 151, and at this time, in the second substrate 700, the distance between the adjacent first protrusion structures 151 is greater than or equal to three times of the compensation sub-pixel 800 along the first direction X dimension PX, that is, 3PX, so that the positions of the signal line 200 and the compensation sub-pixel 800 may be ensured to be relatively fixed, and the arrangement of the signal line 200 and the compensation sub-pixel 800 may be facilitated.

Referring to fig. 12, optionally, the spacing D4 of adjacent second protrusion structures 152 is greater than PX, which is the dimension of the compensation sub-pixel 800 along the first direction X.

Specifically, referring to fig. 12, the compensation sub-pixel 800 may be disposed only on the protrusion structures 150 with a longer depth in the same substrate, and in this case, in the second substrate 700, the distance between the adjacent second protrusion structures 152 is greater than the dimension PX of the compensation sub-pixel 800 along the first direction X, so that the positions of the signal line 200 and the compensation sub-pixel 800 may be relatively fixed, and the arrangement of the signal line 200 and the compensation sub-pixel 800 is facilitated.

Based on the same inventive concept, an embodiment of the present invention further provides a display device, fig. 13 is a schematic structural diagram of the display device provided in the embodiment of the present invention, as shown in fig. 13, the display device includes the display panel 10 provided in any embodiment of the present invention, and the display panel 10 has corresponding functions and advantages.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, comprising:

a signal line disposed on a first surface of the first substrate;

2. The display panel according to claim 1, wherein at least two of the notch structures are shaped differently.

3. The display panel according to claim 1, wherein the notch structures are identical in shape in the same side.

4. The display panel according to claim 1, wherein the widths of the bottom surfaces of at least two of the recess structures are different along a first direction, the first direction being parallel to the first surface and perpendicular to the direction in which the recesses extend.

5. The display panel according to claim 1, wherein the widths of the bottom surfaces of the recess structures in the same side surface are the same along a first direction, and the widths of the bottom surfaces of the recess structures in different side surfaces are different along the first direction, and the first direction is parallel to the first surface and perpendicular to the extending direction of the recess.

6. The display panel according to claim 1, wherein a width of a bottom surface of the recess structure is larger than a line width of the signal line extending therein along a first direction, the first direction being parallel to the first surface and perpendicular to a direction in which the recess extends.

7. The display panel according to claim 1, wherein the signal lines include a first signal line and a second signal line which transmit different signals;

the plurality of notch structures includes a first notch structure through which the first signal line extends to the fan-out circuit region and a second notch structure through which the second signal line extends to the fan-out circuit region.

8. The display panel according to claim 7, wherein the first substrate comprises a first side and a second side, the first side and the second side being disposed adjacently or oppositely, the first side connecting the first surface and the second surface, and the second side connecting the first surface and the second surface;

the first side surface is provided with a plurality of the first notch structures, and the second side surface is provided with a plurality of the second notch structures.

9. The display panel according to claim 7, wherein the first notch structure and the second notch structure are disposed on a same side of the first substrate.

10. The display panel according to claim 7, wherein a line width of the first signal line is smaller than a line width of the second signal line;

the width of the bottom surface of the first notch structure is smaller than that of the bottom surface of the second notch structure along a first direction, and the first direction is parallel to the first surface and perpendicular to the extending direction of the notch.

11. The display panel of claim 1, wherein the notch structure comprises a first sub-notch and at least one second sub-notch extending from the first sub-notch toward a center of the substrate;

the opening of the second sub-notch is arranged on the bottom surface of the first sub-notch, the width of the opening of the second sub-notch is smaller than that of the bottom surface of the first sub-notch along a first direction, the signal line extends from the bottom surface of the second sub-notch to the fan-out circuit region, and the first direction is parallel to the first surface and perpendicular to the extending direction of the notch.

12. The display panel according to claim 11, wherein a depth of the second sub-recess is smaller than a depth of the first sub-recess in a direction in which the recess extends.

13. The display panel according to claim 1, wherein the display panel further comprises a second substrate, a side surface of the second substrate is provided with a plurality of the notch structures extending from an edge of the substrate to a center of the substrate, and a convex structure is formed between two adjacent notch structures in the same substrate;

and one side surface of the first substrate is spliced with one side surface of the second substrate.

14. The display panel of claim 13, wherein at the splice, the protruding structures of the first substrate side fit into the recessed structures of the second substrate side, and the protruding structures of the second substrate side fit into the recessed structures of the first substrate side.

15. The display panel according to claim 14, wherein the width of the protruding structures on the first substrate side is smaller than or equal to the width of the recessed structures on the second substrate side, the width of the recessed structures on the first substrate side is greater than or equal to the width of the protruding structures on the second substrate side, and the first direction is parallel to the first surface and perpendicular to the extending direction of the recessed structures.

16. The display panel according to claim 14, wherein a depth of the convex structure of the second substrate side is less than or equal to a depth of the concave structure of the first substrate side in a direction in which the concave extends.

17. The display panel according to claim 14, wherein the first surface of the protrusion structure is provided with a compensation sub-pixel.

18. The display panel according to claim 17, wherein the compensation sub-pixels are arranged in R, G, B color order along the arrangement direction of the convex structures at the joints.

19. The display panel of claim 17, wherein the signal lines to which the compensation subpixels are electrically connected extend from sidewalls of the protrusion structures to the fan-out circuit region.

20. The display panel according to claim 17, wherein the bottom surfaces of the recess structures in one side of the second substrate are located in the same plane, and the depths of at least two of the protrusion structures are different along the extending direction of the recess.

21. The display panel according to claim 20, wherein the side surface of the second substrate includes a first convex structure and a second convex structure therein;

the depth of the first protruding structure is greater than the depth of the second protruding structure along the extending direction of the notch.

22. The display panel of claim 21 wherein the pitch of adjacent first raised structures is greater than or equal to 3PX, PX being the dimension of the compensation subpixel along the first direction.

23. The display panel of claim 21 wherein the pitch of adjacent second raised structures is greater than PX, PX being the dimension of the compensation subpixel along the first direction.

24. A display device comprising the display panel according to any one of claims 1 to 23.