Display module and display device

Abstract

The invention discloses a display module and a display device. The display module comprises a display panel, the display panel comprises a substrate and a driving circuit, and the driving circuit is located on the first side of the substrate; the at least two peripheral circuit boards are positioned on the second side of the substrate and are distributed corresponding to different side edges of the substrate; the first side is opposite to the second side; the peripheral circuit board comprises a base layer and multiple first binding ends, and the multiple first binding ends are located on the side, close to the substrate, of the base layer; a plurality of via holes are formed in the substrate, and orthographic projections of the first binding end and the via holes on the base layer are at least partially overlapped; the first binding end is electrically connected with the driving circuit through the via hole so as to provide a driving signal for the driving circuit. According to the display module, a narrow frame can be achieved, meanwhile, the electrical connection stability of the display panel and the peripheral circuit board in the display module is improved, and the technological difficulty of binding connection of the display panel and the peripheral circuit board is reduced.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the field of display technology, and particularly relate to a display module and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) displays have attracted widespread attention due to their advantages such as self-luminescence, low power consumption, lightness, flexibility, brilliant colors, high contrast, and fast response rate. Summary of the Invention

[0003] Embodiments of the present disclosure provide a display module and a display device.

[0004] In a first aspect, an embodiment of the present disclosure provides a display module, comprising a display panel, wherein the display panel comprises a substrate and a driving circuit, wherein the driving circuit is located on a first side of the substrate;

[0005] Also included are at least two peripheral circuit boards located on the second side of the substrate and distributed corresponding to different sides of the substrate; the first side and the second side are opposite;

[0006] The peripheral circuit board includes a base layer and a plurality of first binding ends, wherein the plurality of first binding ends are located on a side of the base layer close to the substrate;

[0007] The substrate is provided with a plurality of vias, and the first binding end and the orthographic projection of the via on the base layer at least partially overlap; the first binding end is electrically connected to the driving circuit through the via to provide a driving signal to the driving circuit.

[0008] In some embodiments, an anisotropic conductive adhesive layer is further included, located between the peripheral circuit board and the substrate, and at least located in an overlapping area of ​​the orthographic projection of the first binding end and the via hole;

[0009] The first binding end is electrically connected to the driving circuit through the anisotropic conductive adhesive layer.

[0010] In some embodiments, the display panel further includes a plurality of second binding ends located between the substrate and the driving circuit, and the plurality of second binding ends are electrically connected to the driving circuit respectively;

[0011] The orthographic projections of the second binding end, the via hole, the anisotropic conductive adhesive layer, and the first binding end on the base layer at least partially overlap;

[0012] The first binding end is electrically connected to the second binding end through the anisotropic conductive adhesive layer and the via hole.

[0013] In some embodiments, the display panel further includes a plurality of second binding ends located between the substrate and the peripheral circuit board, wherein the second binding ends and the orthographic projections of the via holes on the base layer at least partially overlap; the second binding ends are electrically connected to the driving circuit through the via holes;

[0014] The orthographic projections of the second binding end, the anisotropic conductive adhesive layer, and the first binding end on the base layer at least partially overlap;

[0015] The first binding end is bound and electrically connected to the second binding end through the anisotropic conductive adhesive layer.

[0016] In some embodiments, a radial dimension of an overlapping area of ​​an orthographic projection of the second binding end, the via hole, the anisotropic conductive adhesive layer, and the first binding end is greater than or equal to a diameter of a gold ball particle in the anisotropic conductive adhesive layer.

[0017] In some embodiments, the second binding end includes a plurality of conductive layers, and the plurality of conductive layers are stacked sequentially in a direction away from the substrate.

[0018] In some embodiments, the display panel has a first frame area and a second frame area, and the first frame area and the second frame area are opposite to each other;

[0019] The peripheral circuit board includes a first sub-board and a second sub-board, the first sub-board is distributed corresponding to the first border area, and the second sub-board is distributed corresponding to the second border area;

[0020] The first sub-board includes a first power supply circuit and a second power supply circuit,

[0021] The plurality of first binding terminals in the first sub-board include a plurality of first power binding terminals and a plurality of second power binding terminals, which are located in the first border area; the plurality of first power binding terminals are electrically connected to the first power circuit; and the plurality of second power binding terminals are electrically connected to the second power circuit;

[0022] The second sub-board includes a third power supply circuit and a fourth power supply circuit,

[0023] The plurality of first binding terminals in the second sub-board include a plurality of third power binding terminals and a plurality of fourth power binding terminals, which are located in the second border area; the plurality of third power binding terminals are electrically connected to the third power circuit; and the plurality of fourth power binding terminals are electrically connected to the fourth power circuit;

[0024] The first power supply circuit and the third power supply circuit are used to provide the same first power supply signal; the second power supply circuit and the fourth power supply circuit are used to provide the same second power supply signal.

[0025] In some embodiments, the display panel further has a third frame area and a fourth frame area, and the third frame area is opposite to the fourth frame area;

[0026] The display panel further includes a plurality of first power leads and a plurality of second power leads;

[0027] A portion of the first power lead is located in the first border area and is electrically connected to the first power binding end; another portion of the first power lead is located in the second border area and is electrically connected to the third power binding end;

[0028] A portion of the second power lead extends from the first border area to the third border area and the second border area, and is electrically connected to a portion of the second power binding end and a portion of the fourth power binding end respectively; another portion of the second power lead extends from the first border area to the fourth border area and the second border area, and is electrically connected to another portion of the second power binding end and another portion of the fourth power binding end respectively.

[0029] In some embodiments, the display panel further comprises a display area, the first frame area, the second frame area, the third frame area, and the fourth frame area surrounding the periphery of the display area.

[0030] The display panel further includes a plurality of first power signal lines and a plurality of second power signal lines, which are located in the display area;

[0031] The plurality of first power signal lines are electrically connected to the first power leads located in the first border area and the second border area respectively;

[0032] The plurality of second power signal lines are electrically connected to the second power leads located in the third frame area and the fourth frame area respectively.

[0033] In some embodiments, the plurality of first power signal lines are distributed in a grid shape;

[0034] The plurality of second power signal lines are distributed in a grid shape.

[0035] In some embodiments, the display panel further includes a plurality of gate driving circuits and a plurality of data lines.

[0036] The plurality of gate driving circuits are located in the display area;

[0037] The plurality of data lines are located in the display area and extend from the display area to the first frame area and the second frame area.

[0038] In some embodiments, the display panel further includes a plurality of gate driving circuits and a plurality of data lines.

[0039] A portion of the gate driving circuit is located in the third border area, and another portion of the gate driving circuit is located in the fourth border area;

[0040] The plurality of data lines are located in the display area and extend from the display area to the first frame area and the second frame area.

[0041] In some embodiments, the first sub-board further includes a first signal source circuit,

[0042] The plurality of first binding ends in the first sub-board further include a plurality of first signal binding ends, which are located in the first border area; the plurality of first signal binding ends are electrically connected to the first signal source circuit and the plurality of gate driving circuits respectively;

[0043] The second sub-board further includes a second signal source circuit,

[0044] The plurality of first binding ends in the second sub-board further include a plurality of second signal binding ends, which are located in the second border area; the plurality of second signal binding ends are electrically connected to the second signal source circuit and the plurality of data lines respectively.

[0045] In some embodiments, the first sub-board further includes a first signal source circuit,

[0046] The plurality of first binding terminals in the first sub-board further include a plurality of first signal binding terminals located in the first border area; the plurality of first signal binding terminals are electrically connected to the first signal source circuit and at least a portion of the gate drive circuit respectively;

[0047] The second sub-board further includes a second signal source circuit and a third signal source circuit.

[0048] The multiple first binding ends in the second sub-board also include multiple second signal binding ends and multiple third signal binding ends, which are located in the second border area; the multiple second signal binding ends are electrically connected to the second signal source circuit and the multiple data lines respectively; the multiple third signal binding ends are electrically connected to the third signal source circuit and at least another part of the gate drive circuit respectively.

[0049] In some embodiments, the first sub-board further includes a first signal source circuit and a fourth signal source circuit.

[0050] The plurality of first binding terminals in the first sub-board further include a plurality of first signal binding terminals and a plurality of fourth signal binding terminals, which are located in the first border area; the plurality of first signal binding terminals are electrically connected to the first signal source circuit and at least a portion of the gate drive circuit, respectively; the plurality of fourth signal binding terminals are electrically connected to the fourth signal source circuit and a portion of the data lines, respectively;

[0051] The second sub-board further includes a second signal source circuit and a third signal source circuit.

[0052] The multiple first binding ends in the second sub-board also include multiple second signal binding ends and multiple third signal binding ends, which are located in the second border area; the multiple second signal binding ends are electrically connected to the second signal source circuit and another part of the data lines respectively; the multiple third signal binding ends are electrically connected to the third signal source circuit and at least another part of the gate drive circuit respectively.

[0053] In some embodiments, the first signal source circuit and the third signal source circuit are used to provide a clock signal and a DC voltage signal to the gate driving circuit;

[0054] The second signal source circuit and the fourth signal source circuit are used to provide data signals to the data lines.

[0055] In some embodiments, both the first power signal and the second power signal are DC voltage signals, and the DC voltage of the first power signal is higher than the DC voltage of the second power signal.

[0056] In a second aspect, an embodiment of the present disclosure further provides a display device comprising the above-mentioned display module.

[0057] The display module provided in this embodiment can provide the driving signals required by the display panel through the at least two peripheral circuit boards located on different sides of the substrate respectively by setting at least two peripheral circuit boards and making them distributed accordingly on different sides of the substrate, thereby avoiding that the driving signals required by the display panel are all accessed from its side frame area (such as the binding side frame area), thereby reducing the width of the display panel driving signal access side frame area and realizing a narrow frame; at the same time, by making at least two peripheral circuit boards distributed accordingly on different sides of the substrate and making the first binding end of the peripheral circuit board electrically connected to the driving circuit through a via hole opened in the substrate, a vertical connection (direct connection on the back) between the peripheral circuit board located on the second side of the substrate and the driving circuit located on the first side of the substrate can be realized. Compared with the solutions in the related art, it can The structural design of the display module binding side frame area and the COF or FPC bending toward the back side of the display module is eliminated, thereby achieving a narrower frame; thirdly, since at least two peripheral circuit boards are directly connected to the back of the driving circuit in the display panel corresponding to different sides of the substrate, the signal access terminals of the driving circuit can be dispersed to different sides of the substrate, thereby avoiding the signal access terminals of the driving circuit being concentrated in the same side frame area of ​​the display module, thereby increasing the spacing between adjacent signal access terminals of the driving circuit and the spacing between adjacent first binding terminals in the peripheral circuit board, and also increasing the area of ​​the signal access terminal of the driving circuit and the area of ​​the first binding terminal, so as to reduce the process difficulty in the subsequent binding connection process between the peripheral circuit board and the driving circuit, and at the same time improve the electrical connection stability between the display panel and the peripheral circuit board.

[0058] The display device provided by the embodiment of the present disclosure, by adopting the above-mentioned display module, can reduce the width of the frame area of ​​the display device, thereby realizing a narrow frame of the display device; it can also reduce the difficulty of the manufacturing process of the display device and improve the quality and display quality of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The accompanying drawings are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation of the present disclosure. The above and other features and advantages will become more apparent to those skilled in the art by describing the detailed exemplary embodiments with reference to the accompanying drawings, in which:

[0060] Figure 1a Schematic diagram of a top view of the display side of an OLED display module in the related art.

[0061] Figure 1b This is a schematic diagram of the OLED display module in the related art, wherein the binding side frame area is bent toward the back side.

[0062] Figure 2a FIG. 1 is a schematic top view of the back side of the display module in an embodiment of the present disclosure.

[0063] Figure 2b For the Figure 2a A structural cross-sectional diagram of the AA' section line.

[0064] Figure 2c For the Figure 2a Another structural cross-sectional diagram of the AA' section line.

[0065] Figure 2d For the Figure 2a Another structural cross-sectional diagram of the AA' section line.

[0066] Figure 3a This is a top view showing the distribution of the first binding end, power leads and signal lines on the back side of the display module in an embodiment of the present disclosure.

[0067] Figure 3b This is another top view showing the distribution of the first binding ends on the back side of the module in the embodiment of the present disclosure.

[0068] Figure 3c This is a top view showing another distribution of the first binding ends on the back side of the display module in the embodiment of the present disclosure.

[0069] Figure 3d This is another top view showing another distribution of the first binding ends on the back side of the display module in an embodiment of the present disclosure.

[0070] Figure 3e This is another top view showing another distribution of the first binding ends on the back side of the display module in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0071] In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, a display module and a display device provided by the embodiments of the present disclosure are further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0072] The embodiments of the present disclosure will be described more fully below with reference to the accompanying drawings, but the illustrated embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully enable those skilled in the art to understand the scope of this disclosure.

[0073] The embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications of the configurations formed based on the manufacturing process. Therefore, the regions illustrated in the drawings are schematic in nature, and the shapes of the regions shown in the drawings illustrate specific shapes of the regions, but are not intended to be limiting.

[0074] In related technologies, such as Figure 1aAs shown, the OLED display module is usually provided with a binding connection terminal 7 in the binding side frame area (such as the lower side frame area) F, and the binding connection terminal 7 is bound and connected to the COF (Chip On Film, a technology for directly packaging an integrated circuit onto a flexible circuit board) or FPC (Flexible Printed Circuit, flexible circuit board) 8; the driving chip (GOA IC) and the data driving circuit (Source IC, data driving chip) of the GOA circuit (Gate Driver on Array, directly integrating the gate driving circuit on the driving backplane of the OLED display module) 9 of the OLED display module are integrated on the COF or FPC, the GOA circuit 9 provides a gate driving signal for the display of the OLED display module, and the data driving circuit provides a data signal for the display of the OLED display module.

[0075] The GOA circuit 9 is usually arranged in the left and right side frame areas G of the OLED display module. Figure 1b As shown, the binding side frame area F, COF or FPC of the OLED display module can be bent toward the back side of the OLED display module. After bending, the COF or FPC can be electrically connected to the peripheral circuit board located on the back side of the OLED display module.

[0076] In the related art, all the binding connection terminals 7 of the circuit traces of the OLED display module are set in the side frame area (i.e., the binding side frame area F). As a result, the binding connection terminals 7 and circuit traces in the binding side frame area F are densely distributed, requiring the binding side frame area F to have a large width. And because the other side frame areas of the OLED display module are also distributed with GOA circuits and traces, the other side frame areas and frame corners also require a large width. In addition, the spacing between adjacent binding connection terminals 7 in the binding side frame area F is small, which increases the process difficulty in the subsequent binding connection process.

[0077] In order to solve the above problems in the related art, in a first aspect, the present disclosure provides a display module, such as Figure 2a and Figure 2b As shown, it includes a display panel 1, which includes a substrate 11 and a driving circuit 12, and the driving circuit 12 is located on the first side 101 of the substrate 11; it also includes at least two peripheral circuit boards 2, which are located on the second side 102 of the substrate 11 and distributed corresponding to different sides of the substrate 11; the first side 101 and the second side 102 are opposite to each other; the peripheral circuit board 2 includes a base layer 21 and multiple first binding ends 22, and the multiple first binding ends 22 are located on a side of the base layer 21 close to the substrate 11; a plurality of vias 110 are opened in the base layer 11, and the orthographic projections of the first binding ends 22 and the vias 110 on the base layer 21 at least partially overlap; the first binding ends 22 are electrically connected to the driving circuit 12 through the vias 110 to provide driving signals to the driving circuit 12.

[0078] In this embodiment, by providing at least two peripheral circuit boards 2 and distributing them correspondingly on different sides of the substrate 11, the driving signals required by the display panel 1 can be provided separately through the at least two peripheral circuit boards 2 located on different sides of the substrate 11, thereby avoiding that the driving signals required by the display panel 1 are all accessed from one side frame area (such as the binding side frame area), thereby reducing the width of the side frame area where the driving signals of the display panel 1 are accessed, and realizing a narrow frame; at the same time, by distributing at least two peripheral circuit boards 2 correspondingly on different sides of the substrate 11, and electrically connecting the first binding end 22 of the peripheral circuit board 2 to the driving circuit 12 through the via 110 provided in the substrate 11, a vertical connection (direct back connection) between the peripheral circuit board 2 located on the second side 102 of the substrate 11 and the driving circuit 12 located on the first side 101 of the substrate 11 can be realized. Compared with the solutions in the related art, the structural design of the display module binding side frame area and the COF or FPC bending toward the back side of the display module can be eliminated, thereby achieving a narrower frame; thirdly, since at least two peripheral circuit boards 2 are directly connected to the back of the driving circuit 12 in the display panel 1 corresponding to different sides of the substrate 11, the signal access terminal of the driving circuit 12 can be dispersed to different sides of the substrate 11, thereby avoiding the signal access terminals of the driving circuit 12 being concentrated in the same side frame area of ​​the display module, and thus increasing the spacing between adjacent signal access terminals of the driving circuit 12 and the spacing between adjacent first binding terminals 22 in the peripheral circuit board 2, and also increasing the area of ​​the signal access terminal of the driving circuit 12 and the area of ​​the first binding terminal 22, so as to reduce the process difficulty in the subsequent binding connection process between the peripheral circuit board 2 and the driving circuit 12.

[0079] In some embodiments, the display module also includes an anisotropic conductive adhesive layer 3, which is located between the peripheral circuit board 2 and the substrate 11, and is at least located in the overlapping area of ​​the orthographic projection of the first binding end 22 and the via 110; the first binding end 22 is electrically connected to the driving circuit 12 through the anisotropic conductive adhesive layer 3 to provide a driving signal to the driving circuit 12.

[0080] Among them, since at least two peripheral circuit boards 2 are directly connected to the back of the driving circuit 12 in the display panel 1 on different sides of the substrate 11, the signal access terminals of the driving circuit 12 can be dispersed to different sides of the substrate 11, thereby increasing the area of ​​the signal access terminals of the driving circuit 12 and the area of ​​the first binding terminal 22 to 2-3 times their original areas (the original area of ​​the signal access terminal and the first binding terminal 22 refers to the case where only one peripheral circuit board 2 is provided and the peripheral circuit board 2 is bound and connected to all the signal access terminals provided in the frame area on one side of the display module. The anisotropic conductive adhesive layer 3 has the functions of filling the via 110 and electrically connecting the first binding terminal 22 and the signal access terminal. Compared with the solution of depositing a conductive film layer in the via hole in the related art to realize the electrical connection between the first binding terminal and the signal access terminal, the conductive film layer will not be disconnected in the via hole 110 due to the deep via hole 110, and a more stable electrical connection can be achieved between the first binding terminal 22 and the signal access terminal of the driving circuit 12 through the via hole 110.

[0081] In some embodiments, as Figure 2b As shown, the display panel 1 also includes a plurality of second binding ends 13, which are located between the substrate 11 and the driving circuit 12, and the plurality of second binding ends 13 and the driving circuit 12 are electrically connected respectively; the orthographic projections of the second binding ends 13, the vias 110, the anisotropic conductive adhesive layer 3 and the first binding ends 22 on the base layer 21 at least partially overlap; the first binding end 22 is electrically connected to the second binding end 13 through the anisotropic conductive adhesive layer 3 and the vias 110.

[0082] In some embodiments, as Figure 2c As shown, the display panel 1 also includes a plurality of second binding ends 13, which are located between the substrate 11 and the peripheral circuit board 2, and the orthographic projections of the second binding ends 13 and the vias 110 on the base layer 21 at least partially overlap; the second binding ends 13 are electrically connected to the driving circuit 12 through the vias 110; the orthographic projections of the second binding ends 13, the anisotropic conductive adhesive layer 3 and the first binding ends 22 on the base layer 21 at least partially overlap; the first binding ends 22 are electrically connected to the second binding ends 13 through the anisotropic conductive adhesive layer 3.

[0083] In this embodiment, Figure 2cAs shown, the second binding end 13 is disposed between the substrate 11 and the peripheral circuit board 2, enabling the second binding end 13 and the first binding end 22 to be face-to-face pressed together, thereby better achieving electrical connection through the anisotropic conductive adhesive layer 3. To ensure a stable electrical connection between the second binding end 13 and the driving circuit 12, the depth of the via 110 can be set to be relatively small. Alternatively, the second binding end 13 can be embedded in the substrate 11, thereby shortening the connection distance between the second binding end 13 and the driving circuit 12 in the via 110, thereby avoiding the defect of a disconnection of the conductive film layer in the via 110.

[0084] In the above embodiment, the second binding terminal 13 is the signal access terminal of the driving circuit 12 .

[0085] In some embodiments, the radial dimension of the orthographic overlapping region of the second binding end 13 , the via 110 , the anisotropic conductive adhesive layer 3 , and the first binding end 22 is greater than or equal to the diameter of the gold sphere particles in the anisotropic conductive adhesive layer 3 .

[0086] Such an arrangement enables the gold ball particles in the anisotropic conductive adhesive layer 3 to smoothly enter the orthographic overlapping area of ​​the second binding end 13, the via 110, the anisotropic conductive adhesive layer 3 and the first binding end 22, thereby achieving a stable electrical connection between the second binding end 13 and the first binding end 22.

[0087] In some embodiments, as Figure 2d As shown, the second binding end 13 includes multiple conductive layers 130, which are stacked in a direction away from the substrate 11. The second binding end 13 composed of multiple conductive layers 130 can reduce the resistance of the second binding end 13 while ensuring a stable electrical connection between the second binding end 13 and the driving circuit 12.

[0088] In some embodiments, as Figure 3a 、 Figure 3b 、 Figure 3c 、 Figure 3d and Figure 3e As shown, the display panel 1 has a first border area A and a second border area B, and the first border area A and the second border area B are opposite to each other; the peripheral circuit board 2 includes a first sub-board 201 and a second sub-board 202, the first sub-board 201 is distributed corresponding to the first border area A, and the second sub-board 202 is distributed corresponding to the second border area B; the first sub-board 201 includes a first power supply circuit and a second power supply circuit, and the multiple first binding terminals 22 in the first sub-board 201 include multiple first power supply binding terminals VDD1 and multiple second power supply binding terminals VSS1, which are located in the first border area A; the multiple first power supply binding terminals VDD1 are electrically connected to the first power supply circuit; and the multiple second power supply binding terminals VSS1 are electrically connected to the second power supply circuit.

[0089] The second sub-board 202 includes a third power supply circuit and a fourth power supply circuit. The multiple first binding terminals 22 in the second sub-board 202 include multiple third power supply binding terminals VDD2 and multiple fourth power supply binding terminals VSS2, which are located in the second border area B; the multiple third power supply binding terminals VDD2 are electrically connected to the third power supply circuit; and the multiple fourth power supply binding terminals VSS2 are electrically connected to the fourth power supply circuit.

[0090] The first power supply circuit and the third power supply circuit are used to provide the same first power supply signal; the second power supply circuit and the fourth power supply circuit are used to provide the same second power supply signal.

[0091] In some embodiments, the first power signal and the second power signal are both DC voltage signals, and the DC voltage of the first power signal is higher than the DC voltage of the second power signal.

[0092] In some embodiments, the first power circuit, the second power circuit, the third power circuit, and the fourth power circuit are used to provide power to the driving circuit 12 .

[0093] In some embodiments, as Figure 3a As shown, the display panel 1 also has a third border area C and a fourth border area D, and the third border area C and the fourth border area D are opposite to each other; the display panel 1 also includes multiple first power leads VDD3 and multiple second power leads VSS3; a part of the first power leads VDD3 is located in the first border area A and is electrically connected to the first power binding terminal VDD1; another part of the first power leads VDD3 is located in the second border area B and is electrically connected to the third power binding terminal VDD2.

[0094] A portion of the second power lead VSS3 extends from the first border area A to the third border area C and the second border area B, and is electrically connected to a portion of the second power binding terminal VSS1 and a portion of the fourth power binding terminal VSS2 respectively; another portion of the second power lead VSS3 extends from the first border area A to the fourth border area D and the second border area B, and is electrically connected to another portion of the second power binding terminal VSS1 and another portion of the fourth power binding terminal VSS2 respectively.

[0095] In some embodiments, as Figure 3a As shown, the display panel 1 also has a display area E, a first border area A, a second border area B, a third border area C and a fourth border area D surrounding the display area E. The display panel 1 also includes multiple first power signal lines VDD4 and multiple second power signal lines VSS4, which are located in the display area E; the multiple first power signal lines VDD4 are electrically connected to the first power leads VDD3 located in the first border area A and the second border area B, respectively; and the multiple second power signal lines VSS4 are electrically connected to the second power leads VSS3 located in the third border area C and the fourth border area D, respectively.

[0096] In some embodiments, as Figure 3a As shown, a plurality of first power signal lines VDD4 are distributed in a grid shape; a plurality of second power signal lines VSS4 are distributed in a grid shape.

[0097] In this embodiment, Figure 3a As shown, compared with the related art in which the first power signal and the second power signal can only be accessed from the binding side frame area of ​​the display module, the present embodiment effectively increases the number of access ports for the first power signal and the second power signal; at the same time, the first power signal line VDD4 is connected in a grid shape, and the second power signal line VSS4 is connected in a grid shape, which can effectively reduce the voltage drop of the first power signal line VDD4 and the second power signal line VSS4, thereby reducing the loss of the first power signal on the first power signal line VDD4 and the loss of the second power signal on the second power signal line VSS4, thereby reducing the power consumption of the entire display module; in addition, the area of ​​the first power binding terminal VDD1 and the second power binding terminal VSS1 can also be increased to reduce the process difficulty in the subsequent binding connection process of the peripheral circuit board 2 and the driving circuit 12.

[0098] In some embodiments, as Figure 3b-3d As shown, the display panel 1 further includes a plurality of gate drive circuits 14 and a plurality of data lines 15. The plurality of gate drive circuits 14 are located in the display area E. The plurality of data lines 15 are located in the display area E and extend from the display area E to the first border area A and the second border area B. By arranging the gate drive circuits 14 in the display area E, the width of the display module border area can be further reduced, thereby achieving a narrower border.

[0099] In some embodiments, as Figure 3e As shown, the display panel 1 also includes multiple gate driving circuits 14 and multiple data lines 15, a portion of the gate driving circuits 14 is located in the third border area C, and another portion of the gate driving circuits 14 is located in the fourth border area D; multiple data lines 15 are located in the display area E and extend from the display area E to the first border area A and the second border area B.

[0100] In some embodiments, as Figure 3b As shown, the first sub-board 201 also includes a first signal source circuit, and the multiple first binding terminals 22 in the first sub-board 201 also include multiple first signal binding terminals 221, which are located in the first border area A; the multiple first signal binding terminals 221 are electrically connected to the first signal source circuit and the multiple gate drive circuits 14 respectively.

[0101] The second sub-board 202 also includes a second signal source circuit. The multiple first binding terminals 22 in the second sub-board 202 also include multiple second signal binding terminals 222 located in the second border area B. The multiple second signal binding terminals 222 are electrically connected to the second signal source circuit and the multiple data lines 15 respectively.

[0102] In this embodiment, Figure 3b As shown, the first signal binding terminal 221 is set in the first frame area A, and the second signal binding terminal 222 is set in the second frame area B, that is, the signal of the first signal binding terminal 221 is accessed from the first frame area A, and the signal of the second signal binding terminal 222 is accessed from the second frame area B; compared with the solution in the related art that all signal access terminals (that is, the second binding terminal 13) are concentratedly set in the same side frame area of ​​the display module, the first signal binding terminal 221 and the second signal binding terminal 222 can be dispersed to the opposite side frame areas of the display module, so as to increase the spacing between adjacent signal access terminals of the driving circuit 12 and the spacing between adjacent first binding terminals 22 in the peripheral circuit board 2 on the one hand, and increase the area of ​​the signal access terminal of the driving circuit 12 and the area of ​​the first binding terminal 22 on the other hand, so as to reduce the process difficulty in the subsequent binding connection process between the peripheral circuit board 2 and the driving circuit 12.

[0103] In some embodiments, as Figure 3c-Figure 3e As shown, the first sub-board 201 also includes a first signal source circuit, and the multiple first binding terminals 22 in the first sub-board 201 also include multiple first signal binding terminals 221, which are located in the first border area A; the multiple first signal binding terminals 221 are electrically connected to the first signal source circuit and at least a part of the gate drive circuit 14 respectively.

[0104] The second sub-board 202 also includes a second signal source circuit and a third signal source circuit. The multiple first binding terminals 22 in the second sub-board 202 also include multiple second signal binding terminals 222 and multiple third signal binding terminals 223, which are located in the second border area B; the multiple second signal binding terminals 222 are electrically connected to the second signal source circuit and the multiple data lines 15 respectively; the multiple third signal binding terminals 223 are electrically connected to the third signal source circuit and at least another part of the gate drive circuit 14 respectively.

[0105] In this embodiment, Figure 3c-Figure 3e As shown, the signal of the first signal binding terminal 221 can be connected to a part of the gate drive circuit 14 from the first border area A, and the signal of the third signal binding terminal 223 can be connected to another part of the gate drive circuit 14 from the second border area B; or the signal of the first signal binding terminal 221 can be connected to all the gate drive circuits 14 from the first border area A, and the signal of the third signal binding terminal 223 can be connected to all the gate drive circuits 14 from the second border area B. That is, the signals of the first signal binding terminal 221 and the third signal binding terminal 223 can drive the gate drive circuit 14 unilaterally or bilaterally. The bilateral drive of the gate drive circuit 14 can effectively improve the display unevenness problem caused by the signal difference between the far end and the near end of the display panel 1. The signal of the second signal binding terminal 222 is connected from the second border area B.

[0106] In some embodiments, as Figure 3d and Figure 3e As shown, the first sub-board 201 also includes a first signal source circuit and a fourth signal source circuit, and the multiple first binding terminals 22 in the first sub-board 201 also include multiple first signal binding terminals 221 and multiple fourth signal binding terminals 224, which are located in the first border area A; the multiple first signal binding terminals 221 are electrically connected to the first signal source circuit and at least a portion of the gate drive circuit 14, respectively; the multiple fourth signal binding terminals 224 are electrically connected to the fourth signal source circuit and a portion of the data line 15, respectively.

[0107] The second sub-board 202 also includes a second signal source circuit and a third signal source circuit. The multiple first binding terminals 22 in the second sub-board 202 also include multiple second signal binding terminals 222 and multiple third signal binding terminals 223, which are located in the second border area B; the multiple second signal binding terminals 222 are electrically connected to the second signal source circuit and another part of the data line 15 respectively; the multiple third signal binding terminals 223 are electrically connected to the third signal source circuit and at least another part of the gate drive circuit 14 respectively.

[0108] In this embodiment, Figure 3d and Figure 3e As shown, similar to the above embodiment, the signals from the first signal binding terminal 221 and the third signal binding terminal 223 can drive the gate drive circuit 14 unilaterally or bilaterally. Unlike the above embodiment, the signal from the fourth signal binding terminal 224 is connected to a portion of the data lines 15 from the first border area A, and the signal from the second signal binding terminal 222 is connected to another portion of the data lines 15 from the second border area B. For example, the signal from the fourth signal binding terminal 224 is connected to the data lines 15 of the left half of the display panel 1 from the first border area A, and the signal from the second signal binding terminal 222 is connected to the data lines 15 of the right half of the display panel 1 from the second border area B. Accordingly, the first signal source circuit and the fourth signal source circuit can use a DDIC chip, which simultaneously provides the signals required by the gate drive circuit 14 of the left half of the display panel 1 and the signals on the data lines 15. The second signal source circuit and the third signal source circuit can also use a DDIC chip, which simultaneously provides the signals required by the gate drive circuit 14 of the right half of the display panel 1 and the signals on the data lines 15.

[0109] In some embodiments, as Figure 3b-3e As shown, the first signal source circuit and the third signal source circuit are used to provide the clock signal CLK and the DC voltage signal (such as VGH and VGL, VGH>VGL) to the gate drive circuit 14; the second signal source circuit and the fourth signal source circuit are used to provide the data signal to the data line 15.

[0110] In some embodiments, the first signal source circuit and the third signal source circuit may be timing control circuits (i.e., Tcon circuits); the second signal source circuit and the fourth signal source circuit may be data driver circuits (i.e., Source ICs). The first signal source circuit, the second signal source circuit, the third signal source circuit, and the fourth signal source circuit may all be display driver integrated circuits (i.e., DDICs).

[0111] In some embodiments, the driving circuit 12 includes a gate driving circuit 14, a pixel circuit (not shown), a data line 15, and other wiring in the display panel 1 (such as a gate line, a power line, a power lead, and a patch cord 18 connecting different conductive layer patterns). The second binding terminal 13 is electrically connected to the corresponding conductive layer in the driving circuit 12 via the patch cord 18.

[0112] In some embodiments, the display panel 1 further includes a display layer 16 and an encapsulation layer 17; the display layer 16 and the encapsulation layer 17 are sequentially stacked on the side of the drive circuit 12 facing away from the substrate 11. The display layer 16 includes an anode, an organic light-emitting functional layer, and a cathode stacked in sequence. The display module further includes a touch layer 4, a polarizer 5, and a cover plate 6, which are sequentially stacked on the display side of the display panel 1.

[0113] In some embodiments, as Figure 2b-2d As shown, the substrate 11 includes a first film layer 111 and a second film layer 112. The second film layer 112 is located on a side of the first film layer 111 facing away from the drive circuit 12, and the orthographic projections of the second film layer 112 and the second binding end 13 on the first film layer 111 do not overlap. Both the first film layer 111 and the second film layer 112 can be made of organic materials. The second film layer 112 protects the first film layer 111 and forms a notch in the area where the second binding end 13 is located.

[0114] The display module provided in this embodiment can provide the driving signals required by the display panel through the at least two peripheral circuit boards located on different sides of the substrate respectively by setting at least two peripheral circuit boards and making them distributed accordingly on different sides of the substrate, thereby avoiding that the driving signals required by the display panel are all accessed from its side frame area (such as the binding side frame area), thereby reducing the width of the display panel driving signal access side frame area and realizing a narrow frame; at the same time, by making at least two peripheral circuit boards distributed accordingly on different sides of the substrate and making the first binding end of the peripheral circuit board electrically connected to the driving circuit through a via hole opened in the substrate, a vertical connection (direct connection on the back) between the peripheral circuit board located on the second side of the substrate and the driving circuit located on the first side of the substrate can be realized. Compared with the solutions in the related art, it can The structural design of the display module binding side frame area and the COF or FPC bending toward the back side of the display module is eliminated, thereby achieving a narrower frame; thirdly, since at least two peripheral circuit boards are directly connected to the back of the driving circuit in the display panel corresponding to different sides of the substrate, the signal access terminals of the driving circuit can be dispersed to different sides of the substrate, thereby avoiding the signal access terminals of the driving circuit being concentrated in the same side frame area of ​​the display module, thereby increasing the spacing between adjacent signal access terminals of the driving circuit and the spacing between adjacent first binding terminals in the peripheral circuit board, and also increasing the area of ​​the signal access terminal of the driving circuit and the area of ​​the first binding terminal, so as to reduce the process difficulty in the subsequent binding connection process between the peripheral circuit board and the driving circuit, and at the same time improve the electrical connection stability between the display panel and the peripheral circuit board.

[0115] In a second aspect, an embodiment of the present disclosure further provides a display device, comprising the display module in the above embodiment.

[0116] By adopting the display module in the above embodiment, the width of the frame area of ​​the display device can be reduced, thereby achieving a narrow frame of the display device; it can also reduce the difficulty of the manufacturing process of the display device and improve the quality and display quality of the display device.

[0117] The display device provided in the embodiments of the present disclosure may be any product or component with a display function, such as an OLED panel, an OLED TV, an OLED billboard, a display, a mobile phone, or a navigation system.

[0118] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display module, comprising a display panel, the display panel comprising a substrate and a driving circuit, the driving circuit being located on a first side of the substrate; It is characterized in that Also included are at least two peripheral circuit boards located on the second side of the substrate and distributed corresponding to different sides of the substrate; the first side and the second side are opposite; The peripheral circuit board includes a base layer and a plurality of first binding ends, wherein the plurality of first binding ends are located on a side of the base layer close to the substrate; A plurality of via holes are formed in the substrate, and the orthographic projections of the first binding end and the via holes on the base layer at least partially overlap; The first binding end is electrically connected to the driving circuit through the via hole to provide a driving signal to the driving circuit.

2. The display module according to claim 1, wherein: It also includes an anisotropic conductive adhesive layer, which is located between the peripheral circuit board and the substrate and at least located in the overlapping area of ​​the orthographic projection of the first binding end and the via hole; The first binding end is electrically connected to the driving circuit through the anisotropic conductive adhesive layer.

3. The display module according to claim 2, wherein: The display panel further includes a plurality of second binding ends located between the substrate and the driving circuit, and the plurality of second binding ends are electrically connected to the driving circuit respectively; The orthographic projections of the second binding end, the via hole, the anisotropic conductive adhesive layer, and the first binding end on the base layer at least partially overlap; The first binding end is electrically connected to the second binding end through the anisotropic conductive adhesive layer and the via hole.

4. The display module according to claim 2, wherein: The display panel further includes a plurality of second binding ends located between the substrate and the peripheral circuit board, wherein the second binding ends and the orthographic projections of the via holes on the base layer at least partially overlap; The second binding end is electrically connected to the driving circuit through the via hole; The orthographic projections of the second binding end, the anisotropic conductive adhesive layer, and the first binding end on the base layer at least partially overlap; The first binding end is bound and electrically connected to the second binding end through the anisotropic conductive adhesive layer.

5. The display module according to any one of claims 3 to 4, characterized in that: The radial size of the overlapping area of ​​the orthographic projections of the second binding end, the via hole, the anisotropic conductive adhesive layer and the first binding end is greater than or equal to the diameter of the gold ball particles in the anisotropic conductive adhesive layer.

6. The display module according to any one of claims 3 to 4, characterized in that: The second binding end includes a plurality of conductive layers, and the plurality of conductive layers are stacked in sequence in a direction away from the substrate.

7. The display module according to claim 1, wherein: The display panel has a first frame area and a second frame area, and the first frame area and the second frame area are opposite to each other; The peripheral circuit board includes a first sub-board and a second sub-board, the first sub-board is distributed corresponding to the first border area, and the second sub-board is distributed corresponding to the second border area; The first sub-board includes a first power supply circuit and a second power supply circuit, The plurality of first binding terminals in the first sub-board include a plurality of first power binding terminals and a plurality of second power binding terminals, which are located in the first border area; the plurality of first power binding terminals are electrically connected to the first power circuit; and the plurality of second power binding terminals are electrically connected to the second power circuit; The second sub-board includes a third power supply circuit and a fourth power supply circuit, The plurality of first binding terminals in the second sub-board include a plurality of third power binding terminals and a plurality of fourth power binding terminals, which are located in the second border area; the plurality of third power binding terminals are electrically connected to the third power circuit; and the plurality of fourth power binding terminals are electrically connected to the fourth power circuit; The first power supply circuit and the third power supply circuit are configured to provide the same first power supply signal; The second power supply circuit and the fourth power supply circuit are configured to provide the same second power supply signal.

8. The display module according to claim 7, wherein: The display panel further comprises a third frame area and a fourth frame area, wherein the third frame area is opposite to the fourth frame area; The display panel further includes a plurality of first power leads and a plurality of second power leads; A portion of the first power lead is located in the first border area and is electrically connected to the first power binding end; another portion of the first power lead is located in the second border area and is electrically connected to the third power binding end; A portion of the second power lead extends from the first border area to the third border area and the second border area, and is electrically connected to a portion of the second power binding end and a portion of the fourth power binding end respectively; another portion of the second power lead extends from the first border area to the fourth border area and the second border area, and is electrically connected to another portion of the second power binding end and another portion of the fourth power binding end respectively.

9. The display module according to claim 8, wherein: The display panel further comprises a display area, the first frame area, the second frame area, the third frame area and the fourth frame area surrounding the periphery of the display area. The display panel further includes a plurality of first power signal lines and a plurality of second power signal lines, which are located in the display area; The plurality of first power signal lines are electrically connected to the first power leads located in the first border area and the second border area respectively; The plurality of second power signal lines are electrically connected to the second power leads located in the third frame area and the fourth frame area respectively.

10. The display module according to claim 9, wherein: The plurality of first power signal lines are distributed in a grid shape; The plurality of second power signal lines are distributed in a grid shape.

11. The display module according to claim 9, wherein: The display panel further includes a plurality of gate driving circuits and a plurality of data lines. The plurality of gate driving circuits are located in the display area; The plurality of data lines are located in the display area and extend from the display area to the first frame area and the second frame area.

12. The display module according to claim 9, wherein: The display panel further includes a plurality of gate driving circuits and a plurality of data lines. A portion of the gate driving circuit is located in the third border area, and another portion of the gate driving circuit is located in the fourth border area; The plurality of data lines are located in the display area and extend from the display area to the first frame area and the second frame area.

13. The display module according to claim 11 or 12, characterized in that: The first sub-board further includes a first signal source circuit, The plurality of first binding ends in the first sub-board further include a plurality of first signal binding ends, which are located in the first border area; the plurality of first signal binding ends are electrically connected to the first signal source circuit and the plurality of gate driving circuits respectively; The second sub-board further includes a second signal source circuit, The plurality of first binding ends in the second sub-board further include a plurality of second signal binding ends, which are located in the second border area; the plurality of second signal binding ends are electrically connected to the second signal source circuit and the plurality of data lines respectively.

14. The display module according to claim 11 or 12, wherein: The first sub-board further includes a first signal source circuit, The plurality of first binding terminals in the first sub-board further include a plurality of first signal binding terminals located in the first border area; the plurality of first signal binding terminals are electrically connected to the first signal source circuit and at least a portion of the gate drive circuit respectively; The second sub-board further includes a second signal source circuit and a third signal source circuit. The plurality of first binding ends in the second sub-board further include a plurality of second signal binding ends and a plurality of third signal binding ends, which are located in the second border area; The plurality of second signal binding ends are electrically connected to the second signal source circuit and the plurality of data lines respectively; the plurality of third signal binding ends are electrically connected to the third signal source circuit and at least another part of the gate driving circuit respectively.

15. The display module according to claim 11 or 12, characterized in that: The first sub-board further includes a first signal source circuit and a fourth signal source circuit. The plurality of first binding ends in the first sub-board further include a plurality of first signal binding ends and a plurality of fourth signal binding ends, which are located in the first border area; The plurality of first signal binding terminals are electrically connected to the first signal source circuit and at least a portion of the gate driving circuit respectively; The plurality of fourth signal binding terminals are electrically connected to the fourth signal source circuit and a portion of the data lines respectively; The second sub-board further includes a second signal source circuit and a third signal source circuit. The plurality of first binding ends in the second sub-board further include a plurality of second signal binding ends and a plurality of third signal binding ends, which are located in the second border area; The plurality of second signal binding ends are electrically connected to the second signal source circuit and another part of the data lines respectively; the plurality of third signal binding ends are electrically connected to the third signal source circuit and at least another part of the gate driving circuit respectively.

16. The display module according to claim 15, wherein: The first signal source circuit and the third signal source circuit are used to provide a clock signal and a DC voltage signal to the gate drive circuit; The second signal source circuit and the fourth signal source circuit are used to provide data signals to the data lines.

17. The display module according to claim 7, wherein: The first power signal and the second power signal are both DC voltage signals, and the DC voltage of the first power signal is higher than the DC voltage of the second power signal.

18. A display device, characterized in that: A display module comprising any one of claims 1-17.

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