Display panel and display device

Abstract

The application discloses a display panel and a display device, wherein the display panel comprises a display area and a non-display area arranged around the display area, the non-display area comprises a binding area; a driving chip is arranged in the binding area, the driving chip comprises a first side edge close to the display area, two second side edges connected with the first side edge, and a third side edge away from the display area and arranged opposite to the first side edge, the driving chip comprises a plurality of input terminals and a plurality of output terminals, the plurality of output terminals are divided into a first output terminal group and second and third output terminal groups arranged on two sides of the first output terminal group; at least the first output terminal group is arranged on the third side edge of the driving chip, and a first wire of the first output terminal group extends from the first side edge to the display area, a second wire of the second output terminal group and a third wire of the third output terminal group extend from the second side edge to the display area. Through the above structure, a narrow frame design is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of display panel, in particular to a display panel and a display device. BACKGROUND

[0002] In the field of liquid crystal display, FFS (Fringe Field Switching) technology is a liquid crystal display technology that makes liquid crystal molecules between electrodes and directly above the electrodes rotate in the plane parallel to the glass substrate through the edge electric field generated between the top strip pixel electrode on the TFT substrate and the bottom COM electrode (Bottom COM) or the top COM pixel electrode and the bottom flat pixel electrode (Bop COM). The liquid crystal panel using FFS pixel structure has the characteristics of high transmittance, high viewing angle, high contrast, high color gamut, etc., and is the main pixel structure type of the current high-end liquid crystal display panel.

[0003] Thin film transistors prepared by using metal oxide semiconductor materials have the advantages of small leakage current, high field effect mobility, good area uniformity, etc., and have become one of the important development technologies of array substrate in display panel. The existing array substrate prepared by using metal oxide semiconductor materials generally adopts bottom gate structure TFT, such as etching stop layer type (ESL), back channel type (BCE), etc., or top gate structure TFT, such as self-aligned top gate (Self-Top Gate), etc. Different types of TFTs applied in array substrate have their own structural advantages. The back channel type bottom gate structure TFT has the advantages of simple structure, short process flow, low cost and high yield, etc. In the application of high resolution FHD display, if demux design is adopted, the oxide mobility is less than LTPS, which leads to large demux area, which is not conducive to the development of narrow frame panel. SUMMARY

[0004] The technical problem solved by the present application is to provide a display panel and a display device, which realize the development of narrow frame panel.

[0005] To solve the above problems, the present application provides a display panel in the first aspect, wherein the display panel comprises a display area and a non-display area arranged around the display area, the non-display area comprises a binding area; the binding area is provided with a driving chip, the driving chip comprises a first side edge close to the display area, two second side edges connected with the first side edge, and a third side edge away from the display area and arranged opposite to the first side edge, the driving chip comprises a plurality of input terminals and a plurality of output terminals, and the plurality of output terminals extend into the display area through a trace; the plurality of output terminals are divided into a first output terminal group, a second output terminal group arranged on both sides of the first output terminal group and close to the second side edge, and a third output terminal group; wherein at least the first output terminal group is arranged on the third side edge of the driving chip, and a first trace of the first output terminal group extends from the first side edge into the display area, a second trace of the second output terminal group and a third trace of the third output terminal group extend from the second side edge into the display area.

[0006] Wherein, a plurality of the input terminals are arranged on the first side edge of the driving chip; the first output terminal group, the second output terminal group and the third output terminal group are arranged on the third side edge of the driving chip, and the second output terminal group and the third output terminal group are located on both sides of the first output terminal group and close to the second side edge.

[0007] Wherein, a plurality of the input terminals are arranged on the first output terminal group on both sides of the third side edge; the second output terminal group and the third output terminal group are arranged on the second side edge respectively.

[0008] Wherein, the first trace extends from the gap of a plurality of the input terminals on the first side edge to the display area to be electrically connected with a plurality of output terminals of the first output terminal group arranged on the third side edge.

[0009] Wherein, the display panel further comprises a flexible circuit board, the flexible circuit board comprises a plurality of pins, and a plurality of the pins are electrically connected with the input terminals one by one.

[0010] Wherein, a plurality of the pins of the flexible circuit board are arranged on one side of the binding area close to the display area; the first trace extends from the gap of a plurality of the pins into the display area.

[0011] The plurality of pins are divided into a first pin group, a second pin group and a third pin group, the first pin group is arranged at a first side of the driving chip close to the binding area, and the second pin group and the third pin group are arranged at a second side of the driving chip close to the binding area; the first wire extends from the gap between the plurality of pins of the first pin group to the display area; the second wire extends from the gap between the plurality of pins of the second pin group to the display area; and the third wire extends from the gap between the plurality of pins of the third pin group to the display area.

[0012] The flexible circuit board is arranged around the driving chip, and the plurality of pins are arranged close to the first side and the second side of the driving chip.

[0013] The first side of the driving chip is further provided with a virtual terminal for supporting the surface of the driving chip and ensuring the flatness of the surface of the driving chip.

[0014] To solve the above problems, the display device provided in the second aspect of the present application comprises the display panel provided in any one of the first aspect.

[0015] The present application has the following beneficial effects: the first wire is extended from the first side of the driving chip to the display area of the display panel, and the second wire and the third wire are extended from the second side of the driving chip to the display area, thereby reducing the number of wires extending from the first side to the display area, making the wires located at the first side sparse, effectively compressing the lower frame of the display panel, and realizing the narrow frame design of the display panel. BRIEF DESCRIPTION OF DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0017] Figure 1 The structure schematic diagram of an embodiment of the display panel provided by the present application is shown in the figure;

[0018] Figure 2 The structure schematic diagram of a first specific embodiment of the display panel provided by the present application is shown in the figure;

[0019] Figure 3 The structure schematic diagram of an existing display panel is shown in the figure;

[0020] Figure 4 The structure schematic diagram of a second specific embodiment of the display panel provided by the present application is shown in the figure;

[0021] Figure 5 A structural schematic diagram of a third embodiment of a display panel provided in the present application is shown in the figure;

[0022] Figure 6 A structural schematic diagram of a fourth embodiment of a display panel provided in the present application is shown in the figure;

[0023] Figure 7 A structural schematic diagram of an embodiment of a display device provided in the present application is shown in the figure.

[0024] Display panel 100; display area 10; non-display area 20;

[0025] Display area 20; wire 31; first wire 311; second wire 312; third wire 313;

[0026] Binding area 30; driving chip 40; first side 401; second side 402; third side 403; input terminal 41; output terminal 42; first output terminal group 421; second output terminal group 422; third output terminal group 423; virtual terminal 43;

[0027] Flexible circuit board 50; pin 51; first pin group 511; second pin group 512; third pin group 513. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0029] The terms used in the embodiments of the present application are merely for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms “a”, “an” and “the” used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless otherwise clearly indicated. “Plural” generally includes at least two, but does not exclude the case of including at least one.

[0030] It should be understood that the term "and / or" as used herein merely describes an associated relationship, that is, there can be three cases, for example, A and / or B, which can represent: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the front and rear associated objects. The terms "first", "second", and the like in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0031] It should be understood that the terms "include", "contain" or any other variation used herein are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0032] It should be noted that the first path end and the second path end of the transistor appearing in this application are the source and the drain of the transistor, and the control end is the gate of the transistor, wherein the source and the drain are not limited, and the first path end can be the source, or the second path end can be the source.

[0033] Reference to "embodiments" in this document means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the application. The phrase appears in the specification at each location does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. The skilled person explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0034] The application provides a display panel, please refer to Figure 1 , Figure 1 The structure schematic diagram of an embodiment of the display panel provided by the application is shown in the figure. Figure 1 As shown in the figure, the display panel includes a display area 10 and a non-display area 20 arranged around the display area 10. The non-display area 20 includes a binding area 30. The binding area 30 is arranged on one side of the display area 10.

[0035] The binding area 30 is provided with a driving chip 40, and the driving chip 40 includes a first side edge 401 close to the display area 20, two second side edges 402 connected to the first side edge 401, and a third side edge 403 away from the display area 20 and arranged opposite to the first side edge 401.

[0036] The driving chip 40 includes a plurality of input terminals 41 and a plurality of output terminals 42. The input terminals 41 are configured to receive driving signals, and the output terminals 42 are configured to provide the driving signals to the display area 10. Specifically, the plurality of output terminals 42 extend into the display area 10 through a plurality of wires 31 to provide the driving signals to the display area 10. The wires are mostly data signal wires.

[0037] The plurality of output terminals 42 are divided into a first output terminal group 421, a second output terminal group 422, and a third output terminal group 423. The first output terminal group 421 extends into the display area 10 through first wires 311, the second output terminal group 422 extends into the display area 10 through second wires 312, and the third output terminal group 423 extends into the display area 10 through third wires 313.

[0038] In this embodiment, at least the first output terminal group 421 is arranged on the third side edge 403 of the driving chip 40. The first wires 311 of the first output terminal group 421 extend from the first side edge 401 into the display area 10. The second output terminal group 422 and the third output terminal group 423 extend from the two second side edges 402 to the display area 10, respectively.

[0039] For details, please refer to Figure 2 , Figure 2 The structure diagram of the first specific embodiment of the driving chip provided in the present application.

[0040] In this embodiment, the second output terminal group 422 and the third output terminal group 423 are arranged on the two sides of the first output terminal group 421 and close to the second side edge 402. In a preferred embodiment, the second output terminal group 422 and the third output terminal group 423 are symmetrically arranged on the two sides of the first output terminal group 421.

[0041] In this embodiment, the second output terminal group 422 and the third output terminal group 423 extend from the second side edge 402 to the display area 10, thereby reducing the number of wires extending from the first side edge 401 into the display area 10, and reducing the height of the lower frame of the display panel, which is conducive to realizing a narrow frame design.

[0042] It should be noted that in a conventional display panel, the non-display area 20 further includes a fan-out area arranged between the binding area and the display area 10 for facilitating the placement of fan-out wires. For details, please refer to Figure 3 , Figure 3 The structure diagram of the existing display panel. As shown in Figure 3 The height H of the fan-out area is limited by the included angle a between the most edge fan-out wire in the fan-out area and the binding area 30. The larger the included angle a, the higher the height H of the fan-out area, which results in a larger land area of the fan-out area.

[0043] In the embodiment, by reducing the number of the wires extending from the first side edge 401 of the binding area 30 to the display area 10, the height H of the fan-out area can be reduced. Further, the fan-out area can be omitted, so that the binding area 30 is adjacent to the display area 10, thereby compressing the lower frame of the display panel and realizing the narrow frame design.

[0044] In the first specific embodiment, the plurality of input terminals 41 are arranged on the first side edge 401 of the driving chip 40. Referring to Figure 2 , the first output terminal group 421, the second output terminal group 422 and the third output terminal group 423 are arranged on the third side edge 403 of the driving chip 40, and the second output terminal group 422 and the third output terminal group 423 are located on both sides of the first output terminal group 421 and close to the second side edge 402.

[0045] In the first specific embodiment, the first wire 311 extends from the gap between the plurality of input terminals 41 of the first side edge 401 to the display area 10, and the first wire 311 is electrically connected to the plurality of output terminals 42 of the first output terminal group 421 arranged on the third side edge 403.

[0046] In the embodiment, by extending the plurality of second wires 312 and the plurality of third wires 313 from the second side edge 402 to the display area 10, the number of wires extending from the first side edge 401 to the display area 10 is reduced, and the wires extending from the first side edge 401 to the display area 10 are sparse.

[0047] Further referring to Figure 4 , Figure 4 is a structural schematic diagram of a second specific embodiment of the display panel provided in the present application. As shown in Figure 4 , the display panel further comprises a flexible circuit board 50, the flexible circuit board 50 is arranged in the binding area 30, and the flexible circuit board 50 is arranged between the driving chip 40 and the display area 10. Among them, the flexible circuit board 50 comprises a plurality of pins 51, and the plurality of pins 51 are electrically connected one by one with the plurality of input terminals 41 (the connection wires are not shown in the figure). It can be understood that the connection wires between the pin 51 and the input terminal 41 can be arranged in different layers of the display panel, thereby avoiding crosstalk.

[0048] In one specific embodiment, the flexible circuit board 50 is disposed between the first side 401 of the driver chip 40 and the display area 20, so that multiple pins 51 are disposed between the first side 401 and the display area 20. A first trace 311 extends from the gap between the multiple pins 51 into the driver chip 40. It should be noted that by extending a portion of the traces 31 from the second side 402 into the display area 10, the number of traces 31 extending from the first side 401 into the display area 10 is reduced, making the traces 31 extending from the first side 401 into the display area 10 sparser. This allows the flexible circuit board 50 to be placed between the display area 10 and the first side 401 of the driver chip 40, that is, placed near the first side 401 of the display area 10. Preferably, the pins 51 of the flexible circuit board 50 are placed in the gaps between the multiple first traces 311. In other words, the multiple first traces 311 extend from the first side 401 of the driver chip 40 and the gaps between the multiple pins 51 of the flexible circuit board 50 into the display area 10, thereby avoiding signal interference. In other embodiments, the first traces 311 and the pins 51 can be disposed on different layers, thus eliminating the need for wiring through their gaps. The multiple pins 51 on the flexible circuit board 50 can be arranged in a single row or in multiple rows in the direction from the driver chip 40 toward the display area 10; this is not limited here.

[0049] When the number of pins 51 on the flexible circuit board 50 is large, in order to further reduce the installation height of the flexible circuit board 50, please refer to [reference needed]. Figure 5 , Figure 5 This is a structural schematic diagram of a third specific embodiment of the display panel provided in this application. Figure 5 As shown, the flexible circuit board 50 has multiple pins 51 divided into a first pin group 511, a second pin group 512, and a third pin group 513. The first pin group 511 is located between the first side 401 of the driver chip 40 and the display area 10, while the second pin group 512 and the third pin group 513 are located close to the two second sides 402 of the driver chip 40, respectively. This allows the multiple pins 51 located near the first side 401 to be spaced further apart, facilitating the routing of the traces 31 through the gaps between the pins 51 and thus simplifying wiring.

[0050] Specifically, a first trace 311 extends from the gap between the first side 401 of the driver chip 40 and multiple pins of the first pin group 511 of the flexible circuit board 50 into the display area 10. A second trace 312 extends from the gap between the second side 402 of the driver chip 40 and multiple pins of the second pin group 512 of the flexible circuit board 50 into the display area 10. A third trace 313 extends from the gap between the second side 402 of the driver chip 40 and multiple pins of the third pin group 513 of the flexible circuit board 50 into the display area 10.

[0051] In one specific embodiment, the flexible circuit board 50 is arranged around the driver chip 40, and multiple pins 51 are respectively arranged at positions close to the first side 401 and the second side 402 of the driver chip 40, while no pins 51 are arranged near the third side 403, thereby reducing the distance between the flexible circuit board 50 and the third side 403 of the driver chip 40. Simultaneously, reducing the number of pins in the first pin group 511 arranged on the first side 401, and arranging multiple pins in the first pin group 511 in a single row, further reduces the distance between the flexible circuit board 50 and the first side 401 of the driver chip 40, shortening the height of the bonding area 30, thus facilitating a narrow bezel design. In other embodiments, the flexible circuit board 50 may consist of three separate circuit boards arranged around the first side 401 and the second side 402 of the driver chip 40, which is not limited here.

[0052] Further, please refer to Figure 6 , Figure 6 This is a structural schematic diagram of a fourth specific embodiment of the display panel provided in this application. Figure 6 As shown, in the fourth embodiment, the first output terminal group 421 is disposed on the third side 403 of the driver chip 40. The input terminal 41 is disposed on the third side 403 of the driver chip 40, along with the first output terminal group 421. The input terminal 41 is divided into two groups, respectively disposed on both sides of the first output terminal 421. The second output terminal group 422 and the third output terminal group 423 are respectively disposed on the second side 402 of the driver chip 40, thereby allowing the second trace 312 and the third trace 313 to extend from the second side 402 of the driver chip 40 into the driver chip 40. In other embodiments, the second output terminal group 422 and the third output terminal group 423 are also disposed on the third side 403 and close to the two second sides 402 of the driver chip 40. That is, the second output terminal group 422 and the third output terminal group 423 are respectively disposed on the side of the input terminal 41 away from the first output terminal group 411, so that they are close to the second side 402 of the driver chip 40, so that the second trace 312 and the third trace 313 extend from the second side 402 into the driver chip 40. Although this can reduce the height of the driver chip 40, it will increase the width of the driver chip 40.

[0053] In the fourth embodiment, the first side 401 of the driver chip 40 is free, which allows for a further reduction in the height of the driver chip 40, that is, a reduction in the distance between the first side 401 and the third side 403 of the driver chip 40. By reducing the height of the bonding area 30 and the height of the driver chip 40, it is more advantageous to achieve a narrow bezel design.

[0054] Furthermore, to avoid unevenness in the plane of the driver chip 40, specifically unevenness in the planes of the first side 401 and the third side 403, which is because the terminals are formed of metal sheets with a certain thickness, and the plane of the third side 403 is supported by the input terminal 41 and the output terminal 42, while the first side 401 has no terminal support, resulting in an uneven surface, it is preferable to provide a virtual terminal 43 on the first side 401 of the driver chip 40. The virtual terminal 43 is suspended and not connected to any traces; it is only used to support the surface of the driver chip 40 to ensure the flatness of the driver chip 40 surface.

[0055] It should be noted that the terminals are located in the middle layer of the driver chip 40, and a protective layer is laminated on the surface to protect the terminals. Since the terminals have a certain thickness, if the terminals are only located on one side, it will result in an uneven surface of the driver chip 40.

[0056] This application also provides a display device, please refer to the details. Figure 7 , Figure 7 This is a schematic diagram of the structure of an embodiment of the display device provided in this application. Figure 7 As shown, the display device 200 includes a display panel 100, which is the display panel 100 described in any of the above embodiments.

[0057] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A display panel, characterized by, The display panel comprises a display area and a non-display area arranged around the display area, and the non-display area comprises a binding area; The binding area is provided with a driving chip, the driving chip comprises a first side edge close to the display area, two second side edges connected with the first side edge, and a third side edge away from the display area and arranged opposite to the first side edge, the driving chip comprises a plurality of input terminals and a plurality of output terminals, and the plurality of output terminals extend into the display area through a plurality of traces; The plurality of output terminals are divided into a first output terminal group, a second output terminal group arranged on both sides of the first output terminal group and close to the second side edge, and a third output terminal group; wherein at least the first output terminal group is arranged at the third side edge of the driving chip, and the first traces of the first output terminal group extend from the first side edge into the display area, the second traces of the second output terminal group and the third traces of the third output terminal group extend from the second side edge into the display area; the plurality of input terminals are arranged on both sides of the first output terminal group at the third side edge; the second output terminal group and the third output terminal group are arranged at the second side edge respectively.

2. The display panel of claim 1, wherein, The display panel further comprises a flexible circuit board, and the flexible circuit board comprises a plurality of pins, and the plurality of pins are electrically connected with the input terminals one by one.

3. The display panel of claim 2, wherein, The plurality of pins are divided into a first pin group, a second pin group and a third pin group, the first pin group is arranged at the first side edge of the driving chip close to the binding area, and the second pin group and the third pin group are arranged at the second side edge of the driving chip close to the binding area; wherein the first traces extend from the gaps of the plurality of pins of the first pin group to the display area; the second traces extend from the gaps of the plurality of pins of the second pin group to the display area; and the third traces extend from the gaps of the plurality of pins of the third pin group to the display area.

4. The display panel of claim 3, wherein, The flexible circuit board is arranged around the driving chip, and the plurality of pins are arranged close to the first side edge and the second side edge of the driving chip.

5. The display panel of claim 1, wherein, The first side edge of the driving chip is further provided with a virtual terminal, the virtual terminal is used for supporting the surface of the driving chip and ensuring the flatness of the surface of the driving chip.

6. A display device, characterized by comprising: The display device comprises the display panel according to any one of claims 1 to 5.

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