Display panel and manufacturing method, and display apparatus

Abstract

The present disclosure relates to the technical field of display, and provides a display panel and a manufacturing method, and a display apparatus. The display panel comprises: a display substrate, which is provided with a display area and a non-display area, wherein the non-display area comprises a display terminal and a touch terminal, and a display wire of the display area extends to a binding area of the display terminal; a touch layer, located on the light-emitting side of the display substrate, wherein a touch wire of the touch layer extends to a binding area of the touch terminal; and a control circuit, located on the backlight side of the display substrate, wherein a display control module comprised in the control circuit is electrically connected to the display wire, and a touch module is electrically connected to the touch wire. In the embodiment of the present disclosure, the display terminal and the touch terminal that are located in the non-display area are directly arranged on the display substrate comprised in the display panel, so that the binding areas are bent to the backlight side of the display area on the basis of the bending areas on the display terminal and the touch terminal, thereby reducing the bending radius of the display terminal, further effectively reducing the bezel of the display panel, and achieving the narrow bezel of the display panel.

Description

Display panel, manufacturing method, and display device

[0001] Cross-references

[0002] The present disclosure claims priority to Chinese patent application number 202410196155.0 filed on February 21, 2024, entitled “Display panel and manufacturing method, display device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the field of display technology, and in particular to a display panel and a manufacturing method thereof, and a display device. Background Art

[0004] In the modern communications industry, demand for medium- and large-sized display products, such as televisions, tablets, laptops, and in-car displays, is increasing, and various display products are also moving towards a larger screen-to-body ratio. Related technologies typically use methods such as COF (Chip On Film) bending and FPC (Flexible Printed Circuit) bending to bend the display traces to the back of the display product to achieve normal display. However, COF bending and FPC bending inevitably result in larger bezels on the display product, reducing user engagement.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the Invention

[0006] The purpose of the present disclosure is to provide a display panel, a manufacturing method, and a display device, which can effectively increase the screen-to-body ratio of medium and large-sized display products and achieve narrow bezels.

[0007] According to one aspect of the present disclosure, there is provided a display panel, comprising:

[0008] A display substrate having a display area and a non-display area located outside the display area, the non-display area including display terminals and touch terminals, the display terminals and the touch terminals each including a bending area and a binding area, the bending area respectively connecting the display area and the binding area, the binding area being located on a backlight side of the display area after the bending area is bent, the display area having display traces, and the display traces extending to the binding area of ​​the display terminal;

[0009] A touch layer is located on the light-emitting side of the display substrate, the touch layer includes touch traces located in the display area, and the touch traces extend to the binding area of ​​the touch terminals;

[0010] The control circuit is located on the backlight side of the display substrate and includes a display control module and a touch module. The display control module is electrically connected to the display wiring, and the touch module is electrically connected to the touch wiring.

[0011] According to any one of the display panels of the present disclosure, the non-display area includes one display terminal, and the display terminal is located on one side of the display area in the column direction;

[0012] The display terminal includes a plurality of binding areas located on a side of the bending area away from the display area, and the plurality of binding areas of the display terminal all have the display traces.

[0013] According to any display panel described in the present disclosure, the width of the display terminal in the row direction is not less than 70 mm and not more than 600 mm.

[0014] According to any display panel described in the present disclosure, the non-display area includes a plurality of the display terminals, and the plurality of display terminals are located on the same side of the display area in the column direction and are spaced apart along the row direction.

[0015] According to any display panel described in the present disclosure, the distance between adjacent display terminals is greater than 5 mm.

[0016] According to any display panel described in the present disclosure, the non-display area includes a first touch terminal, the first touch terminal and the display terminal are located on the same side of the display area, and the first touch terminal is located at the outermost side of the display terminal in the row direction.

[0017] According to any display panel described in the present disclosure, the first touch terminal and the adjacent display terminal are an integrated structure.

[0018] According to any display panel described in the present disclosure, the non-display area further includes a second touch terminal, and the second touch terminal is located on a side of the display area away from the display terminal.

[0019] According to any display panel described in the present disclosure, the non-display area further includes a pair of third touch terminals, and the pair of third touch terminals are respectively located on both sides of the display area in the row direction.

[0020] According to any one of the display panels of the present disclosure, the non-display area includes a plurality of display terminals, and the plurality of display terminals include a first display terminal, a second display terminal, and at least one third display terminal;

[0021] The first display terminal and the second display terminal are located on the same side of the display area in the column direction and are spaced apart along the row direction. At least one third display terminal is located on a side of the display area away from the first display terminal and is spaced apart along the row direction. In the row direction, at least one third display terminal is located between the first display terminal and the second display terminal.

[0022] According to any display panel described in the present disclosure, the distance between the first display terminal and the second display terminal is not less than 30 mm.

[0023] According to any display panel described in the present disclosure, the non-display area includes a pair of first touch terminals, the first touch terminals and the third display terminals are located on the same side of the display area, and the pair of first touch terminals are respectively located on both sides of the at least one third display terminal in the row direction.

[0024] According to any display panel described in the present disclosure, the non-display area further includes a pair of third touch terminals, and the pair of third touch terminals are respectively located on both sides of the display area in the row direction.

[0025] According to any display panel of the present disclosure, the control circuit further includes a first switching circuit and a second switching circuit;

[0026] The first switching circuit is electrically connected to the display wiring and the display control module respectively, and the second switching circuit is electrically connected to the touch wiring and the touch module respectively.

[0027] According to any one of the display panels of the present disclosure, the display substrate comprises a display film layer, a back glue layer and a protective layer stacked in sequence in a direction away from the touch layer;

[0028] At least a portion of the protective layer in the thickness direction is thinned in the bending region, or the protective layer and the back adhesive layer are thinned as a whole in the bending region.

[0029] According to one aspect of the present disclosure, a method for manufacturing a display panel is provided, the method comprising:

[0030] A display substrate is manufactured, wherein the display panel has a display area and a non-display area located outside the display area, the non-display area includes display terminals and touch terminals, the display terminals and the touch terminals each include a bending area and a binding area, the bending area respectively connecting the display area and the binding area, the display area having display traces, and the display traces extending to the binding area of ​​the display terminal;

[0031] A touch layer is formed on the light-emitting side of the display substrate, wherein the touch layer includes touch traces, and the touch traces extend to the binding area of ​​the touch terminals;

[0032] A control circuit is provided, which includes a display control module and a touch module. After the bending area is bent so that the binding area is located on the backlight side of the display area, the display control module is electrically connected to the display wiring, and the touch module is electrically connected to the touch wiring on the backlight side of the display substrate.

[0033] According to one aspect of the present disclosure, a display device is provided, comprising a control mainboard and the display panel described in the above aspect, wherein the display control module and the touch control module are both electrically connected to the control mainboard.

[0034] The embodiments of the present disclosure include at least the following technical effects:

[0035] In the embodiment of the present disclosure, display terminals and touch terminals located in the non-display area are directly arranged on the display substrate included in the display panel, so that the binding area is bent to the backlight side of the display area based on the bending area on the display terminal and the touch terminal, thereby reducing the bending radius of the display terminal, effectively reducing the frame of the display panel, and realizing a narrow frame of the display panel.

[0036] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0038] FIG1 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure.

[0039] FIG2 is a schematic diagram of a top view of a display substrate when unfolded, provided by an embodiment of the present disclosure.

[0040] FIG3 is a schematic diagram of a top view of a display panel when unfolded, provided by an embodiment of the present disclosure.

[0041] FIG4 is a schematic diagram of a cross-sectional structure of a display substrate provided in an embodiment of the present disclosure.

[0042] FIG5 is a schematic diagram of a top view of another display substrate when unfolded, provided by an embodiment of the present disclosure.

[0043] FIG6 is a schematic diagram of a top view of another display substrate when unfolded, provided by an embodiment of the present disclosure.

[0044] FIG7 is a schematic diagram of a top view of another display panel when unfolded, provided by an embodiment of the present disclosure.

[0045] FIG8 is a schematic diagram of a top view of another display panel when unfolded, provided by an embodiment of the present disclosure.

[0046] FIG9 is a schematic diagram of a top view of another display panel when unfolded, provided by an embodiment of the present disclosure.

[0047] FIG10 is a schematic diagram of another bottom-view structure of a display panel after being bent, provided by an embodiment of the present disclosure.

[0048] FIG11 is a schematic diagram of a top view of another display panel when unfolded, provided by an embodiment of the present disclosure.

[0049] FIG12 is a schematic diagram of a bottom-up structure of another display panel after being bent, provided in an embodiment of the present disclosure.

[0050] Figure numerals: 10, display panel; AA, display area; BB, non-display area; B1, display terminal; B2, touch terminal; B3, bending area; B4, binding area; B11, first display terminal; B12, second display terminal; B13, third display terminal; B21, first touch terminal; B22, second touch terminal; B23, third touch terminal; 11, display substrate; 12, touch layer; 13, control circuit; 14, polarizer layer; 15, optical adhesive layer; 16, cover plate; 17, heat dissipation layer; 18, support layer; 111, display film layer; 112, back adhesive layer; 113, protective layer; 131, display control module; 132, touch module; 133, first switching circuit; 134, second switching circuit. DETAILED DESCRIPTION

[0051] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many 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 convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0052] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0053] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0054] FIG1 illustrates a schematic diagram of the cross-sectional structure of a display panel 10 provided in an embodiment of the present disclosure. FIG2 illustrates a schematic diagram of the top view structure of a display substrate 11 provided in an embodiment of the present disclosure before being bent. As shown in FIG1 and FIG2 , the display panel 10 includes: a display substrate 11, the display substrate 11 has a display area AA and a non-display area BB located outside the display area AA, the non-display area BB includes a display terminal B1, the display terminal B1 includes a bending area B3 and a binding area B4, the bending area B3 connects the display area AA and the binding area B4 respectively, and after the bending area B3 is bent, the binding area B4 is located on the backlight side of the display area AA.

[0055] In the embodiment of the present disclosure, the display terminal B1 located in the non-display area BB is directly provided on the display substrate 11 included in the display panel 10. In this way, based on the bending area B3 on the display terminal B1 included in the display substrate 11, the binding area B4 can be bent to the backlight side of the display area AA, thereby reducing the bending radius of the display terminal B1, so as to effectively reduce the frame of the display panel 10 and realize the narrow frame of the display panel 10.

[0056] The display area AA has display wiring, and the display wiring extends to the binding area B4 of the display terminal B1, thereby facilitating electrical connection with the control circuit 13 to realize the display of the image in the display area AA.

[0057] In some embodiments, as shown in FIG. 1 , the display panel 10 further includes a touch layer 12 , and the touch layer 12 is located on the light-emitting side of the display substrate 11 .

[0058] The touch layer 12 includes touch traces located in the display area AA. The touch traces extend to the non-display area BB of the display substrate 11 and are electrically connected to the control circuit 13. Thus, the touch traces and the control circuit 13 cooperate to implement touch operation of the display panel 10.

[0059] As shown in Figure 3, the non-display area BB of the display panel 10 also includes a touch terminal B2. The structure of the touch terminal B2 is the same as that of the display terminal B1, that is, the touch terminal B2 also includes a bending area B3 and a binding area B4. Therefore, based on the bending area B3 on the touch terminal B2 included in the display substrate 11, the binding area B4 of the touch terminal B2 can be bent to the backlight side of the display area AA, thereby reducing the bending radius of the touch terminal B2, so as to effectively reduce the frame of the display panel 10 and realize a narrow frame of the display panel 10.

[0060] In addition, as shown in Figure 3, the touch lines include Tx lines (driving lines) and Rx lines (receiving lines), and both the Tx lines and the Rx lines extend to the binding area B4 of the touch terminal B2 of the non-display area BB. The Tx lines can extend along the left and right sides of the display area AA to the non-display area BB (that is, extending to the non-display area BB along the row direction X), and the Rx lines can extend along the upper and lower ends of the display area AA to the non-display area BB (that is, extending to the non-display area BB along the column direction Y); alternatively, the Tx lines can extend along the upper and lower ends of the display area AA to the non-display area BB (that is, extending to the non-display area BB along the column direction Y), and the Rx lines can extend along the left and right sides of the display area AA to the non-display area BB (that is, extending to the non-display area BB along the row direction X). The embodiments of the present disclosure are not limited to this.

[0061] It should be noted that the display panel 10 further includes a protective film, which covers the bending area B3. The setting of the protective film prevents the bending area B3 from being damaged after bending, thereby ensuring the integrity of the wiring in the bending area B3.

[0062] In some embodiments, as shown in FIG. 4 , the display substrate 11 includes a display film layer 111 , a back adhesive layer 112 , and a protective layer 113 stacked sequentially on a side away from the touch layer 12 .

[0063] As shown in FIG4 , at least a portion of the protective layer 113 is thinned in the bending region B3, or the protective layer 113 and the back adhesive layer 112 are thinned in the bending region B3. Thus, by thinning the protective layer 113 in the bending region B3, the bending radius of the bending region B3 is reduced, thereby further reducing the bezel of the display panel 10 and achieving a narrow bezel of the display panel 10.

[0064] The thinning of the bending area B3 can be performed before the back glue layer 112 and the protective layer 113 are bonded to the backlight side of the display film layer 111, or can be performed by etching after being bonded to the backlight side of the display film layer 111. This is not limited in the embodiments of the present disclosure.

[0065] In the embodiment of the present disclosure, as shown in Figures 1 and 3, the display panel 10 also includes a control circuit 13, the control circuit 13 includes a display control module 131 (such as a PCB (Printed Circuit Board) control circuit) and a touch module 132 (such as a touch chip TIC), the display control module 131 is electrically connected to the display traces in the binding area B4 on the display terminal B1, and the touch module 132 is electrically connected to the touch traces in the binding area B4 on the touch terminal B2.

[0066] After the bending areas B3 of the display terminals B1 and the touch terminals B2 are bent, the display control module 131 and the touch module 132 are both located on the backlight side of the display substrate 11 , that is, the control circuit 13 is located on the backlight side of the display substrate 11 .

[0067] Optionally, the number of display control modules 131 included in the control circuit 13 can be determined based on the number of display terminals B1 within the non-display area BB. For example, there can be a one-to-one correspondence between display control modules 131 and display terminals B1, thereby simplifying the configuration of the control circuit 13. Of course, the number of display control modules 131 can also be less than the number of display terminals B1, so that one display control module 131 can be electrically connected to the display traces within multiple display terminals B1. This is not limited in the embodiments of the present disclosure.

[0068] When the control circuit 13 includes multiple display control modules 131, the multiple display control modules 131 can be connected in series via a flexible circuit board to simplify the electrical connection between the multiple display control modules 131 and the control main board and simplify the connection lines on the backlight side of the display area AA.

[0069] As shown in Figure 3, the control circuit 13 also includes a first adapter circuit 133 and a second adapter circuit 134. The first adapter circuit 133 is electrically connected to the display wiring and the display control module 131 respectively, and the second adapter circuit 134 is electrically connected to the touch wiring (Tx wiring and Rx wiring) and the touch module 132 respectively.

[0070] The first adapter circuit 133 includes a driver chip and a connection circuit. The driver chip is electrically connected to the display traces and, in turn, to the display control module 131 via the connection circuit. The driver chip and the connection circuit can be integrated simultaneously on a COF circuit board, or the connection circuit can be integrated separately on an FPC circuit board or a PCB circuit board. The second adapter circuit 134 includes a connection circuit, and in this case, the second adapter circuit 134 can be integrated separately on an FPC circuit board or a PCB circuit board.

[0071] In the disclosed embodiment, as shown in FIG1 , the display panel 10 further includes a polarizer layer 14, an optical adhesive layer 15, and a cover plate 16, which are sequentially distributed on the side of the touch layer 12 away from the display substrate 11. The polarizer layer 14 covers at least the display area AA of the display substrate 11 to ensure the display effect of the image in the display area AA. The optical adhesive layer 15 is used to bond the cover plate 16 and the polarizer layer 14 together, thereby protecting the display panel 10 through the cover plate 16. Furthermore, as shown in FIG1 , the display panel 10 further includes a heat dissipation layer 17 and a support layer 18, which are sequentially distributed on the side of the display substrate 11 away from the touch layer 12. The heat dissipation layer 17 is used to achieve heat exchange with the display substrate 11 to prevent the display substrate 11 from heating up and affecting the display effect. After the bending area B3 of the display terminal B1 and the bending area B3 of the touch terminal B2 are bent, the binding area B4 of the display terminal B1 and the binding area B4 of the touch terminal B2 are both fixed to the support layer 18 to ensure the bending effect of the bending area B3.

[0072] Next, the embodiment of the present disclosure explains in detail the display terminals B1 included in the non-display area BB of the display substrate 11 .

[0073] In a first embodiment, as shown in FIG. 2 , the non-display area BB of the display substrate 11 includes a display terminal B1 . The display terminal B1 is located on one side of the display area AA in the column direction Y.

[0074] Among them, the width of the display terminal B1 in the row direction X is smaller than the width of the display area AA on the side close to the display terminal B1 in the row direction X, so that the display control module 131 is electrically connected to the display trace through the first adapter circuit 133, and after the display control module 131 is bent to the side close to the backlight side of the display area AA, the display control module 131 falls within the area surrounded by the edge of the display substrate 11, preventing the display control module 131 from extending out of the edge of the display substrate 11.

[0075] 2 , the width W of the display terminal B1 in the row direction X may be not less than 70 mm and not more than 600 mm. For example, the width W of the display terminal B1 is 70 mm, 100 mm, 200 mm, 300 mm, 400 mm, 500 mm, or 600 mm.

[0076] For a larger display panel 10, as shown in FIG2 , the display terminal B1 includes multiple binding areas B4 located on the side of the bending area B3 away from the display area AA. Each of the multiple binding areas B4 of the display terminal B1 has display traces. The provision of multiple binding areas B4 prevents the display terminal B1 from being distributed across its entire area in the row direction X. This reduces the size of the first adapter circuit 133 in the row direction X, thereby facilitating electrical connection between the display traces and the display control module 131.

[0077] At this time, for the binding area B4 included in the display terminal B1 and the first transfer circuit 133 connected to the display control module 131, the first connection circuit 133 can correspond one-to-one with multiple binding areas B4 to simplify the electrical connection between the display traces of the multiple binding areas B4 and the display control module 131. Of course, the number of first transfer circuits 133 can also be less than the number of binding areas B4. For example, one first transfer circuit 133 can simultaneously connect the display traces in at least two binding areas B4 and then connect to the display control module 131.

[0078] In a second embodiment, as shown in FIG5 or FIG6 , the non-display area BB of the display substrate 11 includes a plurality of display terminals B1 . The plurality of display terminals B1 are located on the same side of the display area AA in the column direction Y and are spaced apart along the row direction X. Thus, the provision of the plurality of display terminals B1 can reduce the width of the display terminals B1 in the row direction X, thereby facilitating the bending of the bending area B3 and improving the bending effect of the bending area B3 on each display terminal B1 .

[0079] Optionally, the non-display area BB includes multiple display terminals B1 that are evenly distributed, and the distance between two adjacent display terminals B1 is greater than 5 mm, so as to facilitate electrical connection between the binding area B4 of each display terminal B1 and the first switching circuit 133. For example, the distance between two adjacent display terminals B1 is 5.5 mm, 6 mm, 10 mm, 15 mm, 20 mm, etc.

[0080] Optionally, for some display panels 10, the display wiring of the display substrate 11 extends to the same side of the display area AA in the column direction Y, and is close to the edges on both sides. In this case, as shown in FIG6 , the non-display area BB includes two display terminals B1, and the two display terminals B1 are connected to the same side of the display area AA and are close to the edges to achieve a span distribution of the two display terminals B1. The spacing between the two display terminals B1 is greater than or equal to 30 mm to facilitate other settings of the area between the two display terminals B1 on the display substrate 11 (such as the setting of the notch screen). For example, the spacing between the two display terminals B1 is 30 mm, 35 mm, 40 mm, 50 mm, 60 mm, etc.

[0081] The total length L of the multiple display terminals B1 located on the same side of the display area AA in the row direction X is less than the width of the display area AA in the row direction X. This facilitates electrical connection between the display control module 131 and the display traces within the display terminals B1 via the first adapter circuit 133. Furthermore, after the display control module 131 is bent to the backlight side of the display area AA, it falls within the area enclosed by the edge of the display substrate 11, preventing the display control module 131 from extending beyond the edge of the display substrate 11. Furthermore, as shown in FIG5 or FIG6 , the total length L of the multiple display terminals B1 located on the same side of the display area AA in the row direction X is no less than 70 mm and no greater than 600 mm. For example, the total length L of the multiple display terminals B1 is 70 mm, 100 mm, 200 mm, 300 mm, 400 mm, 500 mm, or 600 mm.

[0082] It should be noted that, as shown in FIG6 , when the display terminal B1 includes one binding area B4, the control circuit 13 further includes a first transfer circuit 133 electrically connected to the display terminal B1, so that the display traces of the binding area B4 can be electrically connected to the display control module 131 via the first transfer circuit 133. As shown in FIG5 , when the display terminal B1 includes multiple binding areas B4, the control circuit 13 further includes multiple first transfer circuits 133 electrically connected to the display terminal B1, and the multiple binding areas B4 correspond one-to-one to the multiple first transfer circuits 133, so that the display traces of each binding area B4 are electrically connected to the display control module 131 via the corresponding first transfer circuit 133. Of course, when the display terminal B1 includes multiple binding areas B4, the number of first transfer circuits 133 included in the control circuit 13 can also be less than the number of binding areas B4, so that the display traces of multiple binding areas B4 can be electrically connected to the display control module 131 via one first transfer circuit 133.

[0083] It should also be noted that, taking the rectangular display area AA of the display substrate 11 as an example, the display area AA has opposing upper and lower ends (i.e., the two sides of the display area AA in the column direction Y), as well as opposing left and right sides (i.e., the two sides of the display area AA in the row direction X). In the above two embodiments, the display terminal B1 included in the non-display area BB can be located at the lower end of the display area AA; of course, the display terminal B1 included in the non-display area BB can also be located at the upper end of the display area AA, or on the left or right side of the display area AA, and the embodiments of the present disclosure are not limited to this.

[0084] Next, in combination with the above two embodiments, taking the case where the display terminal B1 of the non-display area BB is located at the lower end of the display area AA as an example, the touch terminal B2 included in the non-display area BB is explained.

[0085] In some embodiments, as shown in FIG7 , the non-display area BB of the display substrate 11 includes a first touch terminal B21 . The first touch terminal B21 and the display terminal B1 are located on the same side of the display area AA and are located at the outermost side of the display terminal B1 in the row direction X. That is, the first touch terminal B21 included in the non-display area BB is connected to the lower end of the display area AA and is close to the outermost edge.

[0086] The non-display area BB of the display substrate 11 may include one first touch terminal B21 or two first touch terminals B21. When two first touch terminals B21 are included, the two first touch terminals B21 are connected to the lower end of the display area AA and are located near the edges on both sides. Furthermore, in the case of two first touch terminals B21, as shown in FIG7 , after extending from the edge of the display area AA, the touch line can extend to the nearest first touch terminal B21, effectively shortening the length of the touch line at the lower end of the display area AA, thereby effectively reducing the area occupied by the touch line, and facilitating the narrow bezel of the display panel 10 at the lower end of the display area AA.

[0087] Optionally, as shown in FIG7 , the first touch terminal B21 located on one side of the display area AA and near the edge can be integrated with an adjacent display terminal B1, thereby simplifying the structure of the display substrate 11 and improving the manufacturing efficiency of the display substrate 11. Accordingly, the second switching circuit 134 connected to the first touch terminal B21 and the first switching circuit 133 connected to the display terminal B1 can be integrated on the same FPC circuit board or PCB circuit board to simplify the configuration of some switching circuits.

[0088] In other embodiments, as shown in FIG7 or FIG8 , the non-display area BB of the display substrate 11 further includes a second touch terminal B22, and the second touch terminal B22 is located on a side of the display area AA away from the display terminal B1. That is, the second touch terminal B22 included in the non-display area BB is connected to the upper end of the display area AA. In this way, for the touch traces (Tx traces and Rx traces) included in the touch layer 12, it is easier for the touch traces to select the nearest touch terminal B2 from the first touch terminal B21 and the second touch terminal B22, thereby shortening the trace lengths on the left and right sides of the display area AA, effectively reducing the area occupied by the touch traces on the left and right sides of the display area AA, and facilitating the realization of narrow borders on the left and right sides of the display area AA for the display panel 10.

[0089] The non-display area BB of the display substrate 11 may include one or more second touch terminals B22. When the non-display area BB includes one second touch terminal B22, the second touch terminal B22 is connected to the side of the display area AA away from the display terminal B1 and in the center. As shown in FIG7 or FIG8 , when the non-display area BB includes two second touch terminals B22, the two second touch terminals B22 are connected to the side of the display area AA away from the display terminal B1 and close to the two edges. Compared to the case of one second touch terminal B22, two second touch terminals B22 can further shorten the length of the touch trace at the upper end of the display area AA, thereby effectively reducing the area occupied by the touch trace at the upper end of the display area AA, thereby facilitating the narrow frame of the display panel 10 at the upper end of the display area AA.

[0090] In some other embodiments, as shown in FIG9 , the non-display area BB of the display substrate 11 further includes a pair of third touch terminals B23, which are respectively located on both sides of the display area AA in the row direction X. That is, the pair of third touch terminals B23 included in the non-display area BB are respectively connected to the left and right sides of the display area AA. In this way, by providing the third touch terminals B23 on the left and right sides of the display area AA, it is possible to prevent the touch lines extending to the left and right sides of the display area AA from further extending to the upper and / or lower ends of the display area AA, thereby further shortening the length of the touch lines on the left and right sides of the display area AA, thereby effectively reducing the area occupied by the touch lines on the left and right sides of the display area AA, and facilitating the realization of a narrow frame on the left and right sides of the display area AA of the display panel 10.

[0091] Among them, the number of third touch terminals B23 set on the left and right sides of the display area AA can be one or more, and the specific number can be determined in combination with the number of touch lines on the left and right sides of the display area AA. As long as the area occupied by the touch lines on the left and right sides of the display area AA can be effectively reduced, the narrow frame of the display panel 10 on the left and right sides of the display area AA can be realized.

[0092] It should be noted that, for the case where the non-display area BB of the display substrate 11 includes at least two of the first touch terminal B21, the second touch terminal B22, and the third touch terminal B23 at the same time, taking the case where the non-display area BB includes the first touch terminal B21, the second touch terminal B22, and the third touch terminal B23 at the same time as an example, as described in Figure 10, the first touch terminal B21, the second touch terminal B22, and the third touch terminal B23 are all connected to the touch module 132 on the backlight side of the display substrate 11 through the second switching circuit 134.

[0093] In a third embodiment, as shown in FIG11 , the non-display area BB of the display substrate 11 includes a plurality of display terminals B1, and the plurality of display terminals B1 include a first display terminal B11, a second display terminal B12, and at least one third display terminal B13; the first display terminal B11 and the second display terminal B12 are located on the same side of the display area AA in the column direction Y, and are spaced apart along the row direction X; the at least one third display terminal B13 is located on a side of the display area AA away from the first display terminal B11, and is spaced apart along the row direction X; and in the row direction X, the at least one third display terminal B13 is located between the first display terminal B11 and the second display terminal B12.

[0094] The first display terminal B11 and the second display terminal B12 are connected on the same side of the display area AA and near the edges on both sides to achieve a span distribution of the first display terminal B11 and the second display terminal B12. The spacing between the first display terminal B11 and the second display terminal B12 is no less than 30 mm to facilitate other configurations in the area between the first display terminal B11 and the second display terminal B12 on the display substrate 11 (such as the configuration of a notch screen). For example, the spacing between the first display terminal B11 and the second display terminal B12 is 30 mm, 50 mm, 70 mm, 90 mm, 120 mm, etc.

[0095] The total length L of the first display terminals B11 and the second display terminals B12 in the row direction X is less than the width of the display area AA in the row direction X. This facilitates electrical connection of the display control module 131 to the display traces within the first display terminals B11 and the second display terminals B12 via the first adapter circuit 133. Furthermore, after the display control module 131 is bent to the backlight side of the display area AA, it falls within the area enclosed by the edge of the display substrate 11, preventing the display control module 131 from extending beyond the edge of the display substrate 11. Furthermore, as shown in FIG3 , the total length L of the first display terminals B11 and the second display terminals B12 in the row direction X is no less than 70 mm and no greater than 600 mm. For example, the total length L of the multiple display terminals B1 is 70 mm, 100 mm, 200 mm, 300 mm, 400 mm, 500 mm, or 600 mm.

[0096] The third display terminal B13 included in the plurality of display terminals B1 in the non-display area BB on the display substrate 11 may be one or more.

[0097] When the multiple display terminals B1 include a third display terminal B13, the third display terminal B13 may optionally include multiple binding areas B4 located on the side of the bending area B3 away from the display area AA, as shown in FIG11 . Each of the multiple binding areas B4 of the third display terminal B13 includes a display trace. The provision of multiple binding areas B4 prevents the entire edge area of ​​the third display terminal B13 from being distributed with display traces, thereby reducing the difficulty of electrically connecting the display traces to the display control module 131.

[0098] At this time, as shown in FIG11 , the first adapter circuit 133 connecting the display traces within the third display terminal B13 and the display control module 131 can correspond one-to-one with multiple binding areas B4 to simplify the electrical connection between the display traces within the multiple binding areas B4 and the display control module 131. Of course, the number of first adapter circuits 133 can also be less than the number of binding areas B4, for example, one first adapter circuit 133 connects the display traces within at least two binding areas B4 to the display control module 131.

[0099] When the plurality of display terminals B1 include a plurality of third display terminals B13, the plurality of third display terminals B13 are spaced apart, and the distance between two adjacent third display terminals B13 is greater than 5 mm, so that each third display terminal B13 is electrically connected to the first switching circuit 133. For example, the distance between two adjacent third display terminals B13 is 5.5 mm, 6 mm, 10 mm, 15 mm, 20 mm, etc.

[0100] It should be noted that, taking the rectangular display area AA of the display substrate 11 as an example, the display area AA has opposing upper and lower ends, as well as opposing left and right sides. In the third embodiment, the first display terminal B11 and the second display terminal B12 can be located at the upper end of the display area AA, and the at least one third display terminal B13 can be located at the lower end of the display area AA. Alternatively, the first display terminal B11 and the second display terminal B12 can be located on the left side of the display area AA, and the at least one third display terminal B13 can be located on the right side of the display area AA, etc. This is not limited in the present embodiment.

[0101] Next, in combination with the third embodiment described above, taking the example in which the first display terminal B11 and the second display terminal B12 of the non-display area BB are located at the upper end of the display area AA, and the at least one third display terminal B13 is located at the lower end of the display area AA, the touch terminal B2 included in the non-display area BB is explained in detail.

[0102] In some embodiments, as shown in FIG11 , the non-display area BB of the display substrate 11 includes a pair of first touch terminals B21 . The first touch terminals B21 and the third display terminals B13 are located on the same side of the display area AA, and the pair of first touch terminals B21 are respectively located on either side of at least one third display terminal B13 in the row direction X. That is, the pair of first touch terminals B21 included in the non-display area BB are connected to the lower end of the display area AA and are respectively located near the outermost edges on both sides.

[0103] Among them, through the setting of a pair of first touch terminals B21, the touch line at the lower end of the display area AA can be extended to the nearest first touch terminal B21, so as to effectively shorten the line length of the touch line at the lower end of the display area AA, thereby effectively reducing the area occupied by the touch line, and facilitating the realization of a narrow frame of the display panel 10 at the lower end of the display area AA.

[0104] Furthermore, the first touch terminal B21 and the third display terminal B13 can be spaced apart or integrated. When spaced apart, the distance between the first touch terminal B21 and the third display terminal B13 is greater than 5 mm to facilitate electrical connection between the first touch terminal B21 and the third display terminal B13 and the corresponding second adapter circuit 134 and first adapter circuit 133, respectively. For example, the distance between the first touch terminal B21 and the third display terminal B13 is 5.5 mm, 6 mm, 10 mm, 15 mm, 20 mm, etc.

[0105] When the first touch terminals B21 and the third display terminals B13 are integrated, the structure of the display substrate 11 can be simplified, thereby improving the manufacturing efficiency of the display substrate 11. Accordingly, the second adapter circuit 134 connected to the first touch terminals B21 and the first adapter circuit 133 connected to the third display terminals B13 can be integrated on the same FPC circuit board or PCB circuit board, thereby simplifying the configuration of some adapter circuits.

[0106] It should be noted that the second switching circuit 134 for the electrically connected pair of first touch terminals B21 will form a gap between the first display terminal B11 and the third display terminal B13. At this time, as shown in Figure 12, the electrical connection between the display control module 131 connected to the first display terminal B11 and the display control module 131 connected to the third display terminal B13 can be achieved through the jumper circuit.

[0107] In other embodiments, the non-display area BB of the display substrate 11 further includes a pair of third touch terminals B23, and the pair of third touch terminals B23 are respectively located on both sides of the display area AA in the row direction X. That is, the pair of third touch terminals B23 included in the non-display area BB are respectively connected to the left and right sides of the display area AA. In this way, by providing the third touch terminals B23 on the left and right sides of the display area AA, it is possible to prevent the touch lines extending to the left and right sides of the display area AA from further extending to the upper end and / or lower end of the display area AA, thereby shortening the length of the touch lines on the left and right sides of the display area AA, effectively reducing the area occupied by the touch lines on the left and right sides of the display area AA, and facilitating the realization of a narrow frame on the left and right sides of the display area AA of the display panel 10.

[0108] Among them, the number of third touch terminals B23 set on the left and right sides of the display area AA can be one or more, and the specific number can be determined in combination with the number of touch lines on the left and right sides of the display area AA. As long as the area occupied by the touch lines on the left and right sides of the display area AA can be effectively reduced, the narrow frame of the display panel 10 on the left and right sides of the display area AA can be realized.

[0109] The present disclosure also provides a method for manufacturing a display panel, which is used to manufacture the display panel described in the above embodiment. The method includes steps S110 to S130.

[0110] Step S110, produce a display substrate, the display panel has a display area and a non-display area located outside the display area, the non-display area includes display terminals and touch terminals, the display terminals and the touch terminals both include bending areas and binding areas, the bending areas are respectively connected to the display area and the binding area, the display area has display traces, and the display traces extend to the binding area of ​​the display terminal.

[0111] Step S120 : forming a touch layer on the light-emitting side of the display substrate, wherein the touch layer includes touch traces, and the touch traces extend to the bonding area of ​​the touch terminals.

[0112] Step S130: Provide a control circuit, which includes a display control module and a touch module. After bending the bending area so that the binding area is located on the backlight side of the display area, electrically connect the display control module and the display wiring, and electrically connect the touch module and the touch wiring on the backlight side of the display substrate.

[0113] In the embodiment of the present disclosure, display terminals and touch terminals located in the non-display area are directly arranged on the display substrate included in the display panel, so that the binding area is bent to the backlight side of the display area based on the bending area on the display terminal and the touch terminal, thereby reducing the bending radius of the display terminal, effectively reducing the frame of the display panel, and realizing a narrow frame of the display panel.

[0114] In step S110, the manufacturing process for the display terminals and touch terminals included in the non-display area can refer to relevant technologies. The specific manufacturing process of the display terminals and touch terminals can be determined in combination with the number and distribution of the display terminals and touch terminals described in the above embodiment, and the embodiments of the present disclosure are not limited to this. In addition, the thinning of the bending area can be specifically referred to the above embodiment.

[0115] It should be noted that although the steps of the method for manufacturing a display panel in this disclosure are described in a specific order, this does not require or imply that the steps must be performed in this specific order, or that all steps must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0116] The disclosed embodiments further provide a display device comprising a control mainboard and the display panel described in the above embodiments. The display control module and touch module included in the control circuit are electrically connected to the control mainboard. Thus, touch control and image display can be implemented on the display device via the control mainboard. Furthermore, the display panel is flexed to effectively reduce the bezel of the display device, thereby achieving a high screen-to-body ratio.

[0117] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A display panel, characterized in that: include: A display substrate having a display area and a non-display area located outside the display area, the non-display area including display terminals and touch terminals, the display terminals and the touch terminals each including a bending area and a binding area, the bending area respectively connecting the display area and the binding area, the binding area being located on a backlight side of the display area after the bending area is bent, the display area having display traces, and the display traces extending to the binding area of ​​the display terminal; A touch layer is located on the light-emitting side of the display substrate, the touch layer includes touch traces located in the display area, and the touch traces extend to the binding area of ​​the touch terminals; The control circuit is located on the backlight side of the display substrate and includes a display control module and a touch module. The display control module is electrically connected to the display wiring, and the touch module is electrically connected to the touch wiring.

2. The display panel according to claim 1, wherein The non-display area includes one display terminal, and the display terminal is located at one side of the display area in the column direction; The display terminal includes a plurality of binding areas located on a side of the bending area away from the display area, and the plurality of binding areas of the display terminal all have the display traces.

3. The display panel according to claim 2, wherein: The width of the display terminal in the row direction is not less than 70 mm and not more than 600 mm.

4. The display panel according to claim 1, wherein The non-display area includes a plurality of display terminals, and the plurality of display terminals are located on the same side of the display area in the column direction and are spaced apart along the row direction.

5. The display panel according to claim 4, wherein: The distance between adjacent display terminals is greater than 5 mm.

6. The display panel according to any one of claims 2 to 5, wherein: The non-display area includes a first touch terminal, the first touch terminal and the display terminal are located on the same side of the display area, and the first touch terminal is located at the outermost side of the display terminal in a row direction.

7. The display panel according to claim 6, wherein: The first touch terminal and the adjacent display terminal are an integrated structure.

8. The display panel according to claim 6, wherein: The non-display area further includes a second touch terminal, and the second touch terminal is located on a side of the display area away from the display terminal.

9. The display panel according to claim 8, wherein: The non-display area further includes a pair of third touch terminals, and the pair of third touch terminals are respectively located on two sides of the display area in the row direction.

10. The display panel according to claim 1, wherein The non-display area includes a plurality of display terminals, and the plurality of display terminals include a first display terminal, a second display terminal and at least one third display terminal; The first display terminal and the second display terminal are located on the same side of the display area in the column direction and are spaced apart along the row direction. At least one third display terminal is located on a side of the display area away from the first display terminal and is spaced apart along the row direction. In the row direction, at least one third display terminal is located between the first display terminal and the second display terminal.

11. The display panel according to claim 10, wherein: The distance between the first display terminal and the second display terminal is not less than 30 mm.

12. The display panel according to claim 10 or 11, wherein: The non-display area includes a pair of first touch terminals, the first touch terminals and the third display terminals are located on the same side of the display area, and the pair of first touch terminals are respectively located on both sides of the at least one third display terminal in a row direction.

13. The display panel according to claim 12, wherein: The non-display area further includes a pair of third touch terminals, and the pair of third touch terminals are respectively located on two sides of the display area in the row direction.

14. The display panel according to claim 1, wherein: The control circuit further includes a first switching circuit and a second switching circuit; The first switching circuit is electrically connected to the display wiring and the display control module respectively, and the second switching circuit is electrically connected to the touch wiring and the touch module respectively.

15. The display panel according to claim 1, wherein The display substrate includes a display film layer, a back glue layer and a protective layer stacked in sequence in a direction away from the touch layer; At least a portion of the protective layer in the thickness direction is thinned in the bending region, or the protective layer and the back adhesive layer are thinned as a whole in the bending region.

16. A method for manufacturing a display panel, characterized in that: The method comprises: A display substrate is manufactured, wherein the display panel has a display area and a non-display area located outside the display area, the non-display area includes display terminals and touch terminals, the display terminals and the touch terminals each include a bending area and a binding area, the bending area respectively connecting the display area and the binding area, the display area having display traces, and the display traces extending to the binding area of ​​the display terminal; A touch layer is formed on the light-emitting side of the display substrate, wherein the touch layer includes touch traces, and the touch traces extend to the binding area of ​​the touch terminals; A control circuit is provided, which includes a display control module and a touch module. After the bending area is bent so that the binding area is located on the backlight side of the display area, the display control module is electrically connected to the display wiring, and the touch module is electrically connected to the touch wiring on the backlight side of the display substrate.

17. A display device, characterized in that: It comprises a control mainboard and the display panel according to any one of claims 1 to 15, wherein the display control module and the touch control module are both electrically connected to the control mainboard.

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