Display panel and display device

Abstract

The present invention discloses a display panel and a display device, wherein the display panel comprises at least two spliced ​​spliced ​​light-emitting units, each spliced ​​light-emitting unit comprises a carrier substrate, a plurality of light-emitting elements, a plurality of first connection lines and a plurality of second connection lines, a first signal line and a second signal line are respectively arranged on the first side and the second side of the carrier substrate of each spliced ​​light-emitting unit, the first signal line is electrically connected to the first connection line, the second signal line is electrically connected to the second connection line, a first input signal is sequentially input into the light-emitting element through the first signal line and the first connection line, and a second input signal is sequentially input into the light-emitting element through the second signal line and the second connection line. Compared with the prior art, the present invention increases the input paths of the first input signal and the second input signal, and improves the problem of brightness difference and uniformity deterioration caused by signal voltage drop.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Mini-LED (micro light-emitting diode) splicing screen can achieve seamless splicing, high brightness and high PPI (pixel density) display, and it is light, thin and beautiful. However, since the backplane circuit is small and thin, IR Drop (voltage drop) phenomenon is easy to occur at the end of the splicing screen, resulting in deterioration of the brightness uniformity of the whole machine. Summary of the invention

[0003] Embodiments of the present invention provide a display panel and a display device to solve the technical problem that the existing display panel and display device are prone to IR Drop phenomenon at the end of the spliced ​​screen, resulting in deterioration of the brightness uniformity of the whole device.

[0004] To solve the above problems, the technical solution provided by the present invention is as follows:

[0005] The present invention provides a display panel, comprising at least two mutually spliced ​​spliced ​​light-emitting units, each of the spliced ​​light-emitting units comprising a carrier substrate and a plurality of light-emitting elements arranged in an array on the carrier substrate, a plurality of first connecting lines and a plurality of second connecting lines, the first ends of all the light-emitting elements in the same row being electrically connected to the first connecting line, and the second ends being electrically connected to the second connecting line;

[0006] Among them, the first side surface of the supporting substrate of each of the spliced ​​light-emitting units and the second side surface opposite to the first side surface are respectively provided with a first signal line and a second signal line, the first signal line is electrically connected to the first connecting line, the second signal line is electrically connected to the second connecting line, the first input signal is sequentially input into the light-emitting element through the first signal line and the first connecting line, and the second input signal is sequentially input into the light-emitting element through the second signal line and the second connecting line.

[0007] According to the display panel provided by the present invention, all the light-emitting elements in the same row are arranged along a first direction, and the first signal line and the second signal line both extend along a second direction intersecting with the first direction; wherein, for two adjacent spliced ​​light-emitting units in the same row, the first signal line is located on different sides of the carrier substrate of the two spliced ​​light-emitting units, and the second signal line is located on different sides of the carrier substrate of the two spliced ​​light-emitting units.

[0008] According to the display panel provided by the present invention, for two adjacent spliced ​​light-emitting units in the same column, the first signal line is located on the same side of the carrier substrate of the two spliced ​​light-emitting units, and the two second signal lines are located on the same side of the carrier substrate of the two spliced ​​light-emitting units.

[0009] According to the display panel provided by the present invention, the display panel further comprises a first auxiliary signal line and a second auxiliary signal line, the first auxiliary signal line is located at least on one side of the spliced ​​light-emitting unit, the second auxiliary signal line is located at least on one side of the spliced ​​light-emitting unit, and the first auxiliary signal line and the second auxiliary signal line correspond to at least two adjacent spliced ​​light-emitting units;

[0010] Among them, the first auxiliary signal line is electrically connected to the first signal line, the second auxiliary signal line is electrically connected to the second signal line, the first input signal is sequentially input into the light-emitting element through the first auxiliary signal line and the first signal line, and the second input signal is sequentially input into the light-emitting element through the second auxiliary signal line and the second signal line.

[0011] According to the display panel provided by the present invention, the display panel further comprises a first signal bus and a second signal bus, the first auxiliary signal line is connected to the first signal bus, and the second auxiliary signal line is connected to the second signal bus;

[0012] Among them, the first input signal is sequentially input into the light-emitting element through the first signal bus, the first auxiliary signal line and the first signal line, and the second input signal is sequentially input into the light-emitting element through the second signal bus, the second auxiliary signal line and the second signal line.

[0013] According to the display panel provided by the present invention, the line width of the first auxiliary signal line is smaller than the spacing dimension between two adjacent spliced ​​light-emitting units, and the line width of the second auxiliary signal line is smaller than the spacing dimension between two adjacent spliced ​​light-emitting units.

[0014] According to the display panel provided by the present invention, the line width of the first auxiliary signal line ranges from 40 micrometers to 200 micrometers, and the line width of the second auxiliary signal line ranges from 40 micrometers to 200 micrometers.

[0015] According to the display panel provided by the present invention, the first signal line and the second signal line are arranged in the same layer, the first auxiliary signal line and the second auxiliary signal line are arranged in the same layer, and the first auxiliary signal line and the second auxiliary signal line are external signal lines.

[0016] According to the display panel provided by the present invention, all the light emitting elements in the same row are respectively connected in parallel to the first connecting line and the second connecting line.

[0017] According to the display panel provided by the present invention, the light emitting element is Mini-LED or Micro-LED.

[0018] According to the display panel provided by the present invention, the first signal line is a VDD signal line, and the second signal line is a VSS signal line.

[0019] The present invention provides a display device, comprising:

[0020] The display panel mentioned above; and

[0021] At least two assembling mechanisms, each of which is arranged corresponding to the spliced ​​light-emitting unit to fix the spliced ​​light-emitting unit on a frame.

[0022] The beneficial effects of the present invention are as follows: the display panel and the display device provided by the present invention, the display panel includes at least two spliced ​​light-emitting units, and the first signal line and the second signal line electrically connected to the plurality of light-emitting elements are respectively arranged on the first side and the second side of the carrier substrate of each spliced ​​light-emitting unit, the first signal line is electrically connected to the first connection line, and the second signal line is electrically connected to the second connection line. Compared with the first input signal and the second input signal in the prior art that are directly input into the light-emitting element through the first connection line and the second connection line, the first input signal in the present invention can also be input into the light-emitting element through the first signal line and the first connection line, and the second input signal is input into the light-emitting element through the second signal line and the second connection line in sequence, thereby increasing the input paths of the first input signal and the second input signal, thereby reducing the resistance of the first connection line and the second connection line, and improving the brightness difference and uniformity deterioration of the display device caused by the signal voltage drop. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 is a structural schematic diagram of a splicing display unit provided by an embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0026] Figure 3 is another structural schematic diagram of a display panel provided by an embodiment of the present invention;

[0027] Figure 4 It is a partially simplified structural schematic diagram of a display panel provided by an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 100, display panel; 100a, spliced ​​light-emitting unit; 1001a, first side; 1001b, second side; 101, carrier substrate; 102, light-emitting element; 103, first connecting line; 104, second connecting line; 105, first signal line; 106, second signal line; 107, first auxiliary signal line; 108, second auxiliary signal line; 109, first signal bus; 110, second signal bus;

[0030] D1, first direction; D2, second direction. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while "inside" and "outside" refer to the outline of the device.

[0032] In order to solve the problem that in the existing splicing screen, due to the small and thin backplane circuit, IRDrop (voltage drop) phenomenon is easily caused at the end of the splicing screen, resulting in deterioration of the brightness uniformity of the whole device, the embodiments of the present invention provide a display panel and a display device, which will be described below in conjunction with the accompanying drawings.

[0033] See also Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of a splicing display unit provided by an embodiment of the present invention; Figure 21 is a schematic diagram of the structure of a display panel provided by an embodiment of the present invention. The display panel 100 provided by an embodiment of the present invention includes at least two spliced ​​light-emitting units 100a, each of the spliced ​​light-emitting units 100a includes a carrier substrate 101 and a plurality of light-emitting elements 102 arranged in an array and disposed on the carrier substrate 101, a plurality of first connecting wires 103 and a plurality of second connecting wires 104, and all the light-emitting elements 102 in the same row are electrically connected to the first connecting wires 103 and the second connecting wires 104, respectively.

[0034] The first side surface 1001a of the carrier substrate 101 of each of the spliced ​​light-emitting units 100a and the second side surface 1001b opposite to the first side surface 1001a are respectively provided with a first signal line 105 and a second signal line 106, the first signal line 105 is electrically connected to the first connecting line 103, and the second signal line 106 is electrically connected to the second connecting line 104. The first input signal is sequentially input into the light-emitting element 102 through the first signal line 105 and the first connecting line 103, and the second input signal is sequentially input into the light-emitting element 102 through the second signal line 106 and the second connecting line 104.

[0035] It can be understood that, compared with the prior art in which the first input signal and the second input signal are directly input into the light-emitting element 102 through the first connecting line 103 and the second connecting line 104, the present invention increases the input path of the first input signal and the second input signal, thereby reducing the resistance of the first connecting line 103 and the second connecting line 104, and improving the brightness difference and uniformity deterioration of the display device caused by the signal voltage drop.

[0036] The carrier substrate 101 can be understood as a supporting or carrying component of the spliced ​​light-emitting unit 100a, and the carrier substrate 101 can be arranged on the back of the display surface of the display device. The carrier substrate 101 can be a hollow frame structure to reduce the weight of the carrier substrate 101. The carrier substrate 101 is usually arranged to adapt to the spliced ​​light-emitting unit 100a. For example, the carrier substrate 101 can be a carrier substrate 101 of a preset size, that is, the carrier substrate 101 required for the display device of a preset size to be spliced ​​to form at least two spliced ​​light-emitting units 100a. The carrier substrate 101 is a transparent substrate, including a glass substrate and a flexible substrate.

[0037] Exemplarily, each of the spliced ​​light-emitting units 100a may include a plurality of the light-emitting elements 102, a plurality of the first connecting lines 103, and a plurality of the second connecting lines 104. The light-emitting element 102 may be a Mini-LED or a Micro-LED. The plurality of light-emitting elements 102 may be arranged in M ​​rows and N columns, and the values ​​of M and N may be set according to the size of the light-emitting element 102 and the size of the spliced ​​light-emitting unit 100a, and M and N are positive integers. For example, M in the figure is equal to 2 and N is equal to 6, that is, 12 light-emitting elements 102 are arranged in 2 rows and 6 columns to form a spliced ​​light-emitting unit 100a. It should be noted that the values ​​of M and N may be equal or unequal. Of course, the values ​​of M and N may also have other combinations, which are not given examples one by one here.

[0038] In order to make the light-emitting element 102 emit light, a voltage signal needs to be provided to the light-emitting element 102. Exemplarily, each row of the light-emitting elements 102 can be connected to the first connecting wire 103 and the second connecting wire 104, respectively, so that the light-emitting element 102 emits light according to a preset program. Of course, it is also possible to choose to connect each column of the light-emitting elements 102 to the first connecting wire 103 and the second connecting wire 104, respectively. Among them, the directions of rows and columns are relative. In an embodiment of the present invention, the row direction of the light-emitting element 102 can be the same as the row direction of the spliced ​​light-emitting unit 100a.

[0039] Specifically, in one embodiment, the first signal line 105 may be a VDD signal line, the second signal line 106 may be a VSS signal line, and accordingly, the first input signal is a positive signal. Alternatively, in another embodiment, the first signal line 105 may be a VSS signal line, the second signal line 106 may be a VDD signal line, and accordingly, the first input signal is a negative signal.

[0040] It should be noted that, in order to clearly describe the technical solution provided by the present invention, the embodiment of the present invention is explained by taking the example that the first signal line 105 can be a VDD signal line and the second signal line 106 can be a VSS signal line.

[0041] The plurality of first connection lines 103 of each of the spliced ​​light-emitting units 100 a are directly or indirectly electrically connected to each other, and the plurality of second connection lines 104 of each of the spliced ​​light-emitting units 100 a are also directly or indirectly electrically connected to each other.

[0042] All the light-emitting elements 102 in the same row are arranged along a first direction D1, and the first signal line 105 and the second signal line 106 are extended along a second direction D2 intersecting the first direction D1. In the embodiment of the present invention, the first direction D1 and the second direction D2 are perpendicular to each other. Specifically, the first direction D1 is parallel to the first side surface 1001a, and the second direction D2 is parallel to the second side surface 1001b. For two adjacent spliced ​​light-emitting units 100a in the same row, the two first signal lines 105 are located on different sides of the carrier substrate 101 of the two spliced ​​light-emitting units 100a, and the two second signal lines 106 are located on different sides of the carrier substrate 101 of the two spliced ​​light-emitting units 100a, so as to avoid short circuits between the two first signal lines 105 of the two adjacent spliced ​​light-emitting units 100a when they are arranged adjacent to each other, and short circuits between the two second signal lines 106 when they are arranged adjacent to each other, thereby affecting the display effect.

[0043] Furthermore, for two adjacent spliced ​​light-emitting units 100a located in the same column, the two first signal lines 105 are located on the same side of the carrier substrate 101 of the two spliced ​​light-emitting units 100a, and the two second signal lines 106 are located on the same side of the carrier substrate 101 of the two spliced ​​light-emitting units 100a, so as to facilitate the connection of the first signal line 105 and the second signal line 106 with the first signal bus 109 and the second signal bus 110 respectively, which is conducive to simplifying wiring.

[0044] Furthermore, the display panel 100 further includes a first auxiliary signal line 107 and a second auxiliary signal line 108, wherein the first auxiliary signal line 107 is located at least on one side of the spliced ​​light-emitting unit 100a, and the second auxiliary signal line 108 is located at least on one side of the spliced ​​light-emitting unit 100a, and the first auxiliary signal line 107 and the second auxiliary signal line 108 correspond to at least two adjacent spliced ​​light-emitting units 100a. The first auxiliary signal line 107 is electrically connected to the first signal line 105, and the second auxiliary signal line 108 is electrically connected to the second signal line 106, and the first input signal is sequentially input into the light-emitting element 102 through the first auxiliary signal line 107 and the first signal line 105, and the second input signal is sequentially input into the light-emitting element 102 through the second auxiliary signal line 108 and the second signal line 106.

[0045] The display panel 100 also includes a first signal bus 109 and a second signal bus 110. In an embodiment of the present invention, the first signal bus 109 and the second signal bus 110 are located on opposite sides of the entire spliced ​​module formed by splicing the entire spliced ​​light-emitting unit 100a. Specifically, the first signal bus 109 is located on one side of the second side surface 1001b of the adjacent spliced ​​light-emitting unit 100a, and the second signal bus 110 is located on one side of the second side surface 1001b of the adjacent spliced ​​light-emitting unit 100a.

[0046] The first auxiliary signal line 107 is connected to the first signal bus 109, the second auxiliary signal line 108 is connected to the second signal line 106, the first input signal is sequentially input into the light-emitting element 102 through the first signal bus 109, the first auxiliary signal line 107 and the first signal line 105, and the second input signal is sequentially input into the light-emitting element 102 through the second signal bus 110, the second auxiliary signal line 108 and the second signal line 106.

[0047] In order to further reduce the resistance, all the light-emitting elements 102 in the same row are connected in parallel with the first connecting line 103 and the second connecting line 104 respectively. Compared with connecting all the light-emitting elements 102 in the same row in series and then connected to the first connecting line 103 or the second connecting line 104, the driving voltage applied to the light-emitting elements 102 is reduced, which is beneficial to further improve the brightness difference and uniformity deterioration of the display device caused by voltage drop.

[0048] In short, the signal transmission path in the prior art is: the first input signal-the first signal bus 109-the first connection line 103-the light-emitting element 102, and the second input signal-the second signal bus 110-the second connection line 104-the light-emitting element 102. On this basis, the present invention adds a new signal transmission path: the first input signal-the first signal bus 109-the first auxiliary connection line-the first signal line 105-the first connection line 103-the light-emitting element 102, and the second input signal-the second signal bus 110-the second auxiliary connection line-the second signal line 106-the second connection line 104-the light-emitting element 102.

[0049] Assuming that the resistance between the first signal bus 109 and the first connecting line 103 in the signal transmission path in the prior art is R1, and the resistance between the first signal bus 109 and the first connecting line 103 in the newly added signal transmission path of the present invention is R2, the two signal transmission paths are equivalent to a parallel relationship, and the total resistance R between the first signal bus 109 and the first connecting line 103 after parallel connection is smaller than R1 and R2, thereby reducing the resistance between the first signal bus 109 and the light-emitting element 102, so that the voltage applied to the light-emitting element 102 is increased, thereby improving the brightness difference and uniformity deterioration of the display device caused by the signal voltage drop.

[0050] In one embodiment, all of the first signal lines 105 and all of the second signal lines 106 are electrically connected to the corresponding first auxiliary signal lines 107 and the second auxiliary signal lines 108, that is, for all of the spliced ​​light-emitting units 100a, the first input signal is sequentially input into the light-emitting element 102 through the first signal bus 109, the first auxiliary signal line 107 and the first signal line 105, and the second input signal is sequentially input into the light-emitting element 102 through the second signal bus 110, the second auxiliary signal line 108 and the second signal line 106.

[0051] Specifically, each of the first auxiliary signal lines 107 and each of the second auxiliary signal lines 108 can be electrically connected to at least one of the spliced ​​light-emitting units 100a, for example, Figure 2 The first auxiliary signal line 107 and the second auxiliary signal line 108 are electrically connected to the four spliced ​​light-emitting units 100a respectively. For the convenience of connection, the first auxiliary signal line 107 surrounds the four spliced ​​light-emitting units 100a, and the second auxiliary signal line 108 surrounds the four spliced ​​light-emitting units 100a. The first auxiliary signal line 107 is in an inverted U shape, and the second auxiliary signal line 108 is in a positive U shape. The first auxiliary signal line 107 and the second auxiliary signal line 108 are arranged alternately, that is, the legs of the inverted U-shaped first auxiliary signal line 107 and the positive U-shaped second auxiliary signal line 108 are respectively located inside the U-shaped groove of the other party; and the legs of the first auxiliary signal line 107 and the second auxiliary signal line 108 are respectively located between the two first signal lines 105 and the two second signal lines 106 of two adjacent spliced ​​light-emitting units 100a.

[0052] Of course, the arrangement of the first auxiliary signal line 107 and the second auxiliary signal line 108 mentioned above is only an example, and can be reasonably arranged according to actual needs, which is not specifically limited here.

[0053] In another embodiment, see Figure 3 , Figure 3 is another structural schematic diagram of a display panel provided by an embodiment of the present invention. Figure 3 and Figure 2 The difference is that, in order to reduce assembly complexity and simplify wiring, the first signal line 105 of a column of the spliced ​​light-emitting units 100a arranged adjacent to the first signal bus 109 can be directly electrically connected to the first signal bus 109 without passing through the first auxiliary signal line 107; and / or, the spliced ​​light-emitting units 100a in a column arranged adjacent to the second signal bus 110 can be directly electrically connected to the second signal bus 110 without passing through the second auxiliary signal line 108, which can shorten the signal input path and further reduce the resistance.

[0054] In each column of the spliced ​​light-emitting units 100a located between the two columns of the spliced ​​light-emitting units 100a, that is, in each column of the spliced ​​light-emitting units 100a located in the middle, the first signal line 105 and the second signal line 106 can be electrically connected to the first signal bus 109 and the second signal bus 110 respectively with the aid of the first auxiliary signal line 107 and the second auxiliary signal line 108.

[0055] To ensure seamless splicing, take into account the splicing error, please refer to Figure 4 , Figure 4 : is a partially simplified structural schematic diagram of a display panel provided by an embodiment of the present invention. In the embodiment of the present invention, the line width d of the first auxiliary signal line 107 is smaller than the spacing dimension between two adjacent spliced ​​spliced ​​light-emitting units 100a, and the line width d of the second auxiliary signal line 108 is smaller than the spacing dimension between two adjacent spliced ​​spliced ​​light-emitting units 100a. The spacing dimension between two adjacent spliced ​​spliced ​​light-emitting units 100a actually refers to the negative tolerance value of the light-emitting element 102 in the adjacent spliced ​​light-emitting units 100a, that is, the line width d of the first auxiliary signal line 107 is smaller than the negative tolerance value of the light-emitting element 102 in the adjacent spliced ​​light-emitting unit 100a, and the line width d of the second auxiliary signal line 108 is smaller than the negative tolerance value of the light-emitting element 102 in the adjacent spliced ​​light-emitting unit 100a, so as to ensure that the splicing seam width between two adjacent spliced ​​light-emitting units 100a is reasonable and meets the requirements, and achieve a seamless splicing effect.

[0056] It should be noted that the negative tolerance value of the light-emitting element 102 is relative to the standard value of the light-emitting element 102. The standard value may be a standard value determined by technical personnel in this field through experience or experiments. The negative tolerance value may be a negative tolerance ratio based on the standard value specified by the error specifications of the machine for manufacturing the supporting substrate 101 of the spliced ​​screen unit or module. No specific limitation is made here.

[0057] Specifically, the line width of the first auxiliary signal line 107 is in the range of 40 micrometers to 200 micrometers, and the line width of the second auxiliary signal line 108 is in the range of 40 micrometers to 200 micrometers.

[0058] Furthermore, the orthographic projection of the first auxiliary signal line 107 on the carrier substrate 101 covers the corresponding orthographic projection of the first signal line 105 on the carrier substrate 101, and the orthographic projection of the second auxiliary signal line 108 on the carrier substrate 101 covers the corresponding orthographic projection of the second signal line 106 on the carrier substrate 101.

[0059] Specifically, the first signal line 105 and the second signal line 106 are arranged on the same layer, the first auxiliary signal line 107 and the second auxiliary signal line 108 are arranged on the same layer, and the first auxiliary signal line 107 and the second auxiliary signal line 108 are external signal lines. For example, the first auxiliary signal line 107 and the second auxiliary signal line 108 are components with conductive properties such as metal sheets or conductive tapes.

[0060] Furthermore, the display panel 100 also includes a first driver chip (not shown in the figure) and a second driver chip (not shown in the figure), the first driver chip is used to provide the first input signal, and the first driver chip is electrically connected to the first signal bus 109; the second driver chip is used to provide the second input signal, and the second driver chip is electrically connected to the second signal bus 110.

[0061] An embodiment of the present invention further provides a display device, which includes a display panel 100 and at least two assembling mechanisms, each of which is arranged corresponding to the spliced ​​light-emitting unit 100a to fix the spliced ​​light-emitting unit 100a on a frame.

[0062] Specifically, the display device can be an LCD type display, that is, a liquid crystal display device, which is a type of flat panel display. For example, liquid crystal display can be applied to LCD TVs, mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or laptop screens, etc. The advantages of liquid crystal display screens are low power consumption, small size, and low radiation. In this case, a plurality of the spliced ​​light-emitting units 100a can be used as the backlight source of the display device, and its light-emitting effect will directly affect the visual effect of the liquid crystal display device. The working principle of the display panel 100 is to inject liquid crystal molecules between the thin film transistor array substrate (TFT Array Substrate) and the color filter backplane, and apply a driving voltage on the two backplanes to control the rotation direction of the liquid crystal molecules, so as to refract the light of the carrier substrate 101 to produce a picture.

[0063] The beneficial effects are as follows: the display panel and the display device provided by the present invention, the display panel includes at least two spliced ​​light-emitting units, and the first signal line and the second signal line electrically connected to the plurality of light-emitting elements are respectively arranged on the first side and the second side of the carrier substrate of each spliced ​​light-emitting unit, the first signal line is electrically connected to the first connection line, and the second signal line is electrically connected to the second connection line. Compared with the first input signal and the second input signal in the prior art that are directly input into the light-emitting element through the first connection line and the second connection line, the first input signal in the present invention can also be input into the light-emitting element through the first signal line and the first connection line, and the second input signal is input into the light-emitting element through the second signal line and the second connection line in sequence, thereby increasing the input paths of the first input signal and the second input signal, thereby reducing the resistance of the first connection line and the second connection line, and improving the brightness difference and uniformity deterioration of the display device caused by the signal voltage drop.

[0064] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A display panel, characterized in that: The method comprises at least two mutually spliced ​​spliced ​​light-emitting units, each of which comprises a carrier substrate and a plurality of light-emitting elements arranged in an array and disposed on the carrier substrate, a plurality of first connecting wires and a plurality of second connecting wires, wherein the first ends of all the light-emitting elements in the same row are electrically connected to the first connecting wires, and the second ends are electrically connected to the second connecting wires; Wherein, a first signal line and a second signal line are respectively provided on the first side surface and the second side surface opposite to the first side surface of the carrier substrate of each of the spliced ​​light-emitting units, the first signal line is electrically connected to the first connecting line, the second signal line is electrically connected to the second connecting line, a first input signal is sequentially input into the light-emitting element through the first signal line and the first connecting line, and a second input signal is sequentially input into the light-emitting element through the second signal line and the second connecting line; The display panel also includes a first auxiliary signal line and a second auxiliary signal line, the first auxiliary signal line is located on at least one side of the spliced ​​light-emitting unit, the second auxiliary signal line is located on at least one side of the spliced ​​light-emitting unit, and the first auxiliary signal line and the second auxiliary signal line correspond to at least two adjacent spliced ​​light-emitting units; wherein the first auxiliary signal line is electrically connected to the first signal line, the second auxiliary signal line is electrically connected to the second signal line, the first input signal is sequentially input into the light-emitting element through the first auxiliary signal line and the first signal line, and the second input signal is sequentially input into the light-emitting element through the second auxiliary signal line and the second signal line.

2. The display panel according to claim 1, characterized in that: All the light-emitting elements in the same row are arranged along a first direction, and the first signal line and the second signal line both extend along a second direction intersecting the first direction; wherein, for two adjacent spliced ​​light-emitting units in the same row, the first signal line is located on different sides of the carrier substrate of the two spliced ​​light-emitting units, and the second signal line is located on different sides of the carrier substrate of the two spliced ​​light-emitting units.

3. The display panel according to claim 2, characterized in that: For two adjacent spliced ​​light-emitting units in the same column, the first signal line is located on the same side of the carrier substrate of the two spliced ​​light-emitting units, and the two second signal lines are located on the same side of the carrier substrate of the two spliced ​​light-emitting units.

4. The display panel according to claim 1, characterized in that: The display panel further includes a first signal bus and a second signal bus, the first auxiliary signal line is connected to the first signal bus, and the second auxiliary signal line is connected to the second signal bus; Among them, the first input signal is sequentially input into the light-emitting element through the first signal bus, the first auxiliary signal line and the first signal line, and the second input signal is sequentially input into the light-emitting element through the second signal bus, the second auxiliary signal line and the second signal line.

5. The display panel according to claim 4, characterized in that: The line width of the first auxiliary signal line is smaller than the spacing dimension between two adjacent spliced ​​light-emitting units, and the line width of the second auxiliary signal line is smaller than the spacing dimension between two adjacent spliced ​​light-emitting units.

6. The display panel according to claim 5, characterized in that: The line width of the first auxiliary signal line ranges from 40 micrometers to 200 micrometers, and the line width of the second auxiliary signal line ranges from 40 micrometers to 200 micrometers.

7. The display panel according to claim 1, characterized in that: The first signal line and the second signal line are arranged on the same layer, the first auxiliary signal line and the second auxiliary signal line are arranged on the same layer, and the first auxiliary signal line and the second auxiliary signal line are external signal lines.

8. The display panel according to claim 1, characterized in that: All the light emitting elements in the same row are connected in parallel to the first connection line and the second connection line respectively.

9. The display panel according to claim 1, characterized in that: The light emitting element is Mini-LED or Micro-LED.

10. The display panel according to claim 1, characterized in that: The first signal line is a VDD signal line, and the second signal line is a VSS signal line.

11. A display device, characterized in that: include: The display panel according to any one of claims 1 to 10; as well as At least two assembling mechanisms, each of which is arranged corresponding to the spliced ​​light-emitting unit to fix the spliced ​​light-emitting unit on a frame.

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