Display panel and display device

Abstract

The invention discloses a display panel and a display device.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; 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 which is far away from the display area and is arranged opposite to the first side edge, and 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 as well as a second output terminal group and a third output terminal group which are arranged on two sides of the first output terminal group; wherein at least the first output terminal group is arranged on the third side edge of the driving chip, a first wire of the first output terminal group extends into the display area from the first side edge, and a second wire of the second output terminal group and a third wire of the third output terminal group extend into the display area from the second side edge. Through the structure, the narrow frame design is realized.

Description

Technical Field

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

[0002] In the field of liquid crystal display, FFS (Fringe Field Switching) technology is a liquid crystal display technology that uses the fringe electric field generated between the top strip pixel electrode and the bottom planar COM electrode (Bottom COM) or the top COM pixel electrode and the bottom planar pixel electrode (Bop COM) on the TFT substrate to enable the liquid crystal molecules between the electrodes and directly above the electrodes to rotate on a plane parallel to the glass substrate. The liquid crystal panel with 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 high-end liquid crystal display panels.

[0003] Thin film transistors made of metal oxide semiconductor materials have become one of the important development technologies for array substrates in display panels because of their advantages such as low leakage current, high field effect mobility, and good regional uniformity. Existing array substrates made of metal oxide semiconductor materials generally use bottom gate structure TFTs, such as etch barrier type (ESL), back channel type (BCE), etc., or use top gate structure TFTs, such as self-aligned top gate (Self-Top Gate), etc. Different types of TFTs have their own structural advantages when applied to array substrates. Back channel bottom gate structure TFT has the advantages of simple structure, short process flow, low cost and high yield. If demux design is used in high-resolution FHD display applications, the oxide mobility is lower than LTPS, resulting in a large demux area, which is not conducive to the development of narrow-frame panels. Summary of the invention

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

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

[0006] Among them, the multiple input terminals are arranged on the first side of the driving chip; the first output terminal group, the second output terminal group and the third output terminal group are all arranged on the third side 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.

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

[0008] The first wiring extends from the gaps between the plurality of input terminals on the first side to the display area to be electrically connected to the plurality of output terminals of the first output terminal group arranged on the third side.

[0009] Wherein, the display panel further includes a flexible circuit board, and the flexible circuit board includes a plurality of pins, and the plurality of pins are electrically connected to the input terminals in a one-to-one correspondence.

[0010] Among them, the plurality of pins of the flexible circuit board are arranged on a side of the binding area close to the display area; and the first wiring extends from the gaps between the plurality of pins to the display area.

[0011] Among them, the multiple pins are divided into a first pin group, a second pin group and a third pin group, the first pin group is arranged on the first side of the binding area close to the driver chip, the second pin group and the third pin group are respectively arranged on the second side of the binding area close to the driver chip; wherein, the first routing line extends from the gaps between the multiple pins of the first pin group to the display area; the second routing line extends from the gaps between the multiple pins of the second pin group to the display area; the third routing line extends from the gaps between the multiple 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 edge and the second side edge of the driving chip.

[0013] Wherein, a dummy terminal is further provided on the first side of the driving chip, and the dummy terminal is used to support the surface of the driving chip to ensure the flatness of the surface of the driving chip.

[0014] In order to solve the above-mentioned problem, the present application provides a display device in a second aspect, wherein the display device comprises the display panel described in any embodiment of the first aspect.

[0015] The beneficial effect of the present application is: by extending the first routing line from the first side edge of the driver chip to the display area of ​​the display panel, and extending the second routing line and the third routing line from the second side edge of the driver chip to the display area, the number of routing lines extending from the first side edge to the display area is reduced, and the routing lines located on the first side edge become sparse, which can effectively compress the lower frame of the display panel and realize the narrow frame design of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a display panel according to an embodiment of the present application;

[0018] Figure 2 A schematic structural diagram of a first specific embodiment of a display panel provided in the present application;

[0019] Figure 3 is a structural schematic diagram of an existing display panel;

[0020] Figure 4 A schematic structural diagram of a second specific embodiment of a display panel provided in the present application;

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

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

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

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

[0025] Display area 20; routing 31; first routing 311; second routing 312; third routing 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; pins 51; a first pin group 511; a second pin group 512; and a third pin group 513. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "said", and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless otherwise clearly indicated above, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0030] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0031] It should be understood that the terms "include", "comprises" or any other variations used herein are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0032] It should be noted that the first path end and the second path end of the transistor appearing in the present application are the source and drain of the transistor respectively, 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" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The presence of the phrase at each location in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

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

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

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

[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 the first wiring 311, the second output terminal group 422 extends into the display area 10 through the second wiring 312, and the third output terminal group 423 extends into the display area 10 through the third wiring 313.

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

[0039] Please refer to Figure 2 , Figure 2 This is a schematic structural diagram of the first specific embodiment of the driver chip provided in this application.

[0040] In this embodiment, the second output terminal group 422 and the third output terminal group 423 are respectively arranged on both sides of the first output terminal group 421 and close to the second side 402. In a preferred embodiment, the second output terminal group 422 and the third output terminal group 423 are symmetrically arranged on both 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 402 to the display area 10. By reducing the number of traces extending from the first side 401 to the display area 10, the height of the lower frame of the display panel can be reduced, which is conducive to achieving a narrow frame design.

[0042] It should be noted that in a conventional display panel, the non-display area 20 also includes a fan-out area, which is arranged between the binding area and the display area 10 to facilitate the placement of fan-out wiring. Figure 3 , Figure 3 FIG. 1 is a schematic diagram of the structure of an existing display panel. Figure 3 As shown, the height H of the fan-out area is limited by the angle α between the fan-out trace at the edge of the fan-out area and the binding area 30. The larger the angle α, the higher the height H of the fan-out area, which results in a larger footprint of the fan-out area.

[0043] In this embodiment, by reducing the number of traces extending from the first side 401 of the binding area 30 to the display area 10, the height H of the fan-out area can be reduced. Furthermore, the fan-out area can be omitted, so that the binding area 30 and the display area 10 are arranged adjacent to each other, thereby compressing the lower frame of the display panel and realizing a narrow frame design.

[0044] In the first embodiment, a plurality of input terminals 41 are disposed on the first side 401 of the driver chip 40. Figure 2 The first output terminal group 421, the second output terminal group 422 and the third output terminal group 423 are all arranged on the third side 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 402.

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

[0046] In this embodiment, by extending multiple second routing lines 312 and multiple third routing lines 313 from the second side 402 into the display area 10, the number of routing lines extending from the first side 401 into the display area 10 is reduced, making the routing lines extending from the first side 401 into the display area 10 sparse.

[0047] See further Figure 4 , Figure 4 This is a schematic diagram of the structure of the second specific embodiment of the display panel provided in this application. Figure 4 As shown, the display panel also includes a flexible circuit board 50, which 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 includes a plurality of pins 51, and the plurality of pins 51 are electrically connected to the plurality of input terminals 41 in a one-to-one correspondence (the connecting wires are not shown in the figure). It can be understood that the connecting wires between the pins 51 and the input terminals 41 can be arranged on a different layer of the display panel from the wires 31, so as to avoid crosstalk.

[0048] In a 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 the plurality of pins 51 are disposed between the first side 401 and the display area 20. The first trace 311 extends from the gap between the plurality of pins 51 into the driver chip 40. It should be noted that, since a portion of the traces 31 are extended 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, and the traces 31 extending from the first side 401 into the display area 10 become sparse, so that the flexible circuit board 50 can be placed between the display area 10 and the first side 401 of the driver chip 40, that is, placed at the position of the driver chip 40 close to 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 plurality of first wirings 311. In other words, the plurality of first wirings 311 extend from the first side 401 of the driver chip 40 and the gaps between the plurality of pins 51 of the flexible circuit board 50 to the display area 10, thereby avoiding signal interference. In other embodiments, the first wirings 311 and the pins 51 may be arranged in different layers, so that there is no need to wire from the gaps therebetween. Among them, the plurality of pins 51 on the flexible circuit board 50 may be arranged in a single row or in multiple rows in the direction from the driver chip 40 to the display area 10, which 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 setting height of the flexible circuit board 50, please refer to Figure 5 , Figure 5 This is a schematic diagram of the structure of the third specific embodiment of the display panel provided in this application. Figure 5 As shown, the multiple pins 51 of the flexible circuit board 50 are divided into a first pin group 511, a second pin group 512 and a third pin group 513. Among them, the first pin group 511 is arranged between the first side 401 of the driver chip 40 and the display area 10, and the second pin group 512 and the third pin group 513 are respectively arranged close to the two second sides 402 of the driver chip 40. Thus, the multiple pins 51 arranged close to the first side 401 can be made sparse, which is conducive to the wiring 31 being inserted into the gaps between the multiple pins 51, thereby facilitating wiring.

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

[0051] In a specific embodiment, the flexible circuit board 50 is arranged around the driver chip 40, and a plurality of pins 51 are respectively arranged at the positions close to the first side 401 and the second side 402 of the driver chip 40, and no pins 51 are arranged at the position close to the third side 403, so that the distance between the flexible circuit board 50 and the third side 403 of the driver chip 40 can be reduced. At the same time, the number of pins of the first pin group 511 arranged on the first side 401 is reduced, so that the plurality of pins in the first pin group 511 are arranged in a single row, which also reduces the distance between the flexible circuit board 50 and the first side 401 of the driver chip 40, shortens the height of the binding area 30, and is conducive to the narrow frame design. In other embodiments, the flexible circuit board 50 can be composed 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] For further information, see Figure 6 , Figure 6 This is a schematic diagram of the structure of the fourth specific embodiment of the display panel provided in this application. Figure 6 As shown, in the fourth specific embodiment, the first output terminal group 421 is arranged on the third side 403 of the driver chip 40. The input terminal 41 and the first output terminal group 421 are arranged on the third side 403 of the driver chip 40. And the input terminal 41 is divided into two groups, which are respectively arranged on both sides of the first output terminal 421. The second output terminal group 422 and the third output terminal group 423 are respectively arranged on the second side 402 of the driver chip 40, so that the second wiring 312 and the third wiring 313 extend from the second side 402 of the driver chip 40 to the driver chip 40 respectively. In other embodiments, the second output terminal group 422 and the third output terminal group 423 are also arranged 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 arranged 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 wiring 312 and the third wiring 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 specific embodiment, the first side 401 of the driver chip 40 is idle, and the height of the driver chip 40 can be further reduced, that is, the distance between the first side 401 and the third side 403 of the driver chip 40 can be reduced. By reducing the height of the binding area 30 and the height of the driver chip 40, it is more conducive to achieving a narrow frame design.

[0054] Furthermore, in order to avoid the unevenness of the plane of the driver chip 40, that is, the unevenness of the plane of the first side 401 and the third side 403. This is because the terminal is formed by a metal sheet and has a certain thickness. The plane of the third side 403 is supported by the input terminal 41 and the output terminal 42, and the first side 401 has no terminal support, which will cause an uneven surface. Therefore, preferably, a virtual terminal 43 is set on the first side 401 of the driver chip 40, and the virtual terminal 43 is suspended and not connected to the wiring, and is only used to support the surface of the driver chip 40 to ensure the flatness of the surface of the driver chip 40.

[0055] It should be noted that the terminal is arranged in the middle layer of the driving chip 40, and a protective layer is laminated on the surface to protect the terminal. Since the terminal has a certain thickness, if the terminal is only arranged on one side, the surface of the driving chip 40 will be uneven.

[0056] The present application also provides a display device. Figure 7 , Figure 7 This is a schematic diagram of the structure of an embodiment of a display device provided by the present application. Figure 7 As shown, the display device 200 includes a display panel 100 , and the display panel 100 is the display panel 100 described in any of the above embodiments.

[0057] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, characterized in that: The display panel includes a display area and a non-display area arranged around the display area, and the non-display area includes a binding area; The binding area is provided with a driving chip, the driving chip includes a first side close to the display area, two second sides connected to the first side, and a third side away from the display area and arranged opposite to the first side, the driving chip includes a plurality of input terminals and a plurality of output terminals, and the plurality of output terminals extend into the display area through wiring; The multiple output terminals are divided into a first output terminal group and a second output terminal group and a third output terminal group which are arranged on both sides of the first output terminal group and close to the second side; wherein, at least the first output terminal group is arranged on the third side of the driving chip, and the first wiring of the first output terminal group extends from the first side to the display area, and the second wiring of the second output terminal group and the third wiring of the third output terminal group extend from the second side to the display area.

2. The display panel according to claim 1, characterized in that: The plurality of input terminals are arranged on a first side of the driver chip; the first output terminal group, the second output terminal group and the third output terminal group are all arranged on a third side of the driver 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.

3. The display panel according to claim 1, characterized in that: The plurality of input terminals are arranged on both sides of the first output terminal group on the third side; the second output terminal group and the third output terminal group are respectively arranged on the second side.

4. The display panel according to claim 2, characterized in that: The first wiring extends from the gaps between the plurality of input terminals on the first side to the display area to be electrically connected to the plurality of output terminals of the first output terminal group disposed on the third side.

5. The display panel according to claim 2 or 3, characterized in that: The display panel further includes a flexible circuit board, and the flexible circuit board includes a plurality of pins, and the plurality of pins are electrically connected to the input terminals in a one-to-one correspondence.

6. The display panel according to claim 5, characterized in that: The plurality of pins of the flexible circuit board are arranged on a side of the binding area close to the display area; and the first wiring extends from the gaps between the plurality of pins into the display area.

7. The display panel according to claim 5, characterized in that: 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 on a first side of the binding area close to the driver chip, the second pin group and the third pin group are respectively arranged on a second side of the binding area close to the driver chip; wherein, the first wiring extends from a gap between the plurality of pins of the first pin group to the display area; the second wiring extends from a gap between the plurality of pins of the second pin group to the display area; and the third wiring extends from a gap between the plurality of pins of the third pin group to the display area.

8. The display panel according to claim 7, characterized in that: The flexible circuit board is arranged around the four sides of 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.

9. The display panel according to claim 3, characterized in that: A dummy terminal is also provided on the first side of the driving chip, and the dummy terminal is used to support the surface of the driving chip to ensure the flatness of the surface of the driving chip.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 9.

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