Display panel and display device

Abstract

The utility model discloses a display panel and a display device. The display panel comprises a panel main body, a circuit board, at least one chip on film and a first flexible circuit board, the circuit board is positioned on one side of the panel main body; one end of the chip-on-film is connected to the panel main body, and the other end of the chip-on-film is connected to the circuit board; one end of the first flexible circuit board is connected to the panel main body, and the other end of the first flexible circuit board is connected to the circuit board; the display panel further comprises a data signal line and a time sequence signal line, the data signal line is arranged on the chip on film and extends into the panel body, and the time sequence signal line is arranged on the first flexible circuit board and extends into the panel body. According to the utility model, the density of the signal lines in the panel main body can be reduced, the temperature in the area is reduced, and the probability that the signal lines in the panel main body are burnt out due to high temperature is reduced.

Description

Technical Field

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

[0002] In the field of display technology, Chip On Film (COF) is a chip soft film packaging technology that fixes the driver IC on the FPC.

[0003] At present, on the opposite sides of the binding side of the display panel, the wiring on the flip chip film includes data lines and signal lines connected to the GOA circuit. As the refresh rate and resolution of the display panel increase, the current in the signal lines connected to the GOA also increases. For example, the current in the timing signal line is getting bigger and bigger. As a result, due to the dense signal lines and increased current on the opposite sides of the binding side of the display panel, the heat generated is large and the temperature is too high, which increases the risk of the circuit being burned. Utility Model Content

[0004] The embodiments of the utility model provide a display panel and a display device, which can reduce the density of signal lines in a panel body and reduce the probability of the signal lines in the panel body being burned due to high temperature.

[0005] The present invention provides a display panel, which includes:

[0006] Panel body;

[0007] A circuit board, located on one side of the panel body;

[0008] At least one chip-on-film, one end of the chip-on-film is connected to the panel body, and the other end of the chip-on-film is connected to the circuit board;

[0009] A first flexible circuit board, one end of the first flexible circuit board is connected to the panel body, and the other end of the first flexible circuit board is connected to the circuit board;

[0010] The display panel further includes data signal lines and timing signal lines. The data signal lines are arranged on the chip-on-film and extend into the panel body. The timing signal lines are arranged on the first flexible circuit board and extend into the panel body.

[0011] In an embodiment of the present utility model, the panel body includes a binding side and a first side connected to the binding side, one end of the chip-on-film is connected to the binding side, the other end of the chip-on-film is connected to the circuit board, one end of the first flexible circuit board is connected to the binding side, and the other end of the first flexible circuit board is connected to the circuit board;

[0012] Wherein, the first flexible circuit board is located on a side of at least one of the COFs close to the first side edge.

[0013] In an embodiment of the present invention, the timing signal line includes a first line segment extending into the panel body, and the first line segment extends in a direction perpendicular to the binding side.

[0014] In one embodiment of the present invention, the data signal line includes a second line segment extending into the panel body, the display panel includes at least two timing signal lines, and the spacing between two adjacent first line segments of two adjacent timing signal lines is smaller than the spacing between the first line segment and the second line segment.

[0015] In an embodiment of the present invention, the width of the first flexible circuit board in a direction parallel to the binding side is smaller than the width of the chip-on-film in a direction parallel to the binding side.

[0016] In one embodiment of the utility model, a first gate drive circuit is provided in the panel body close to the first side, a level conversion circuit is provided on the circuit board, one end of the timing signal line is connected to the level conversion circuit, and the other end of the timing signal line passes through the first flexible circuit board and is connected to the first gate drive circuit.

[0017] In an embodiment of the present invention, a driving chip is disposed on the chip-on-film, the data signal line is connected to the driving chip, and the signal line on the first flexible circuit board only includes the timing signal line.

[0018] In one embodiment of the present utility model, the panel body further comprises a second side edge connected to the binding side edge, and the second side edge is arranged opposite to the first side edge;

[0019] The display panel also includes a plurality of the timing signal lines and a second flexible circuit board, the second flexible circuit board is arranged on a side of at least one of the flip chip films close to the second side edge, and some of the timing signal lines are also arranged on the second flexible circuit board and extend into the panel body.

[0020] In one embodiment of the utility model, a second gate drive circuit is provided in the panel body near the second side, one end of some of the timing signal lines is connected to the circuit board, and the other end of some of the timing signal lines passes through the second flexible circuit board and is connected to the second gate drive circuit.

[0021] According to the above-mentioned purpose of the present invention, an embodiment of the present invention further provides a display device, which includes the display panel.

[0022] Beneficial effects of the utility model: the utility model adds a first flexible circuit board between the panel body and the circuit board, and sets the timing signal line on the first flexible circuit board, thereby reducing the density of the signal lines in the panel body and the temperature of the signal lines distributed in the panel body, thereby reducing the probability of the signal lines in the panel body being burned due to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0024] Figure 1 A schematic diagram of a structure of a display panel provided in the related art;

[0025] Figure 2 Provided in related technology Figure 1 A schematic diagram of the local enlarged structure at a in the middle;

[0026] Figure 3 A schematic diagram of the structure of a display panel provided by an embodiment of the utility model;

[0027] Figure 4 The embodiment of the utility model provides Figure 3 A schematic diagram of a local enlarged structure at A in the middle;

[0028] Figure 5 The embodiment of the utility model provides Figure 3 Another partial enlarged structural schematic diagram at A in the middle;

[0029] Figure 6 Another schematic diagram of the structure of a display panel provided by an embodiment of the utility model;

[0030] Figure 7 The embodiment of the utility model provides Figure 6 A schematic diagram of a local enlarged structure at B in the middle;

[0031] Figure 8 The embodiment of the utility model provides Figure 6 Another partial enlarged structural schematic diagram at B in the middle;

[0032] Fig. 9 A schematic diagram of the structure of a display device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0034] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0035] Please combine Figure 1 as well as Figure 2 , is a display panel provided in the related art, which includes a panel body 1, a circuit board 2 and a chip-on-chip film 3 connected between the panel body 1 and the circuit board 2, and the display panel also includes a signal line 4 passing through the chip-on-chip film 3 and extending into the panel body 1, and the signal line 4 may include a data line and a timing signal line; as the refresh rate and resolution of the display panel increase, the current in the timing signal line connected to the GOA circuit also increases accordingly; further, on the opposite sides of the binding side of the display panel, the timing signal line and the data line share the chip-on-chip film to extend into the surface, and then the signal lines on the opposite sides of the binding side of the display panel are densely distributed, and the increase in the current in the timing signal line causes the opposite sides of the binding side of the display panel to generate a large amount of heat, the temperature is too high, and the risk of the circuit being burned is increased.

[0036] Please combine Figure 3 and Figure 4 An embodiment of the utility model provides a display panel, which includes a panel body 10, a circuit board 20, at least one COF 30 and a first flexible circuit board 41.

[0037] Among them, the circuit board 20 is located on one side of the panel body 10; one end of the flip chip film 30 is connected to the panel body 10, and the other end of the flip chip film 30 is connected to the circuit board 20; one end of the first flexible circuit board 41 is connected to the panel body 10, and the other end of the first flexible circuit board 41 is connected to the circuit board 20, and the first flexible circuit board 41 is located on one side of at least one flip chip film 30 close to the first side edge 102.

[0038] The display panel further includes a data signal line 50 and a timing signal line 60 . The data signal line 50 is disposed on the COF 30 and extends into the panel body 10 . The timing signal line 60 is disposed on the first flexible circuit board 41 and extends into the panel body 10 .

[0039] During the implementation of the application, the utility model adds a first flexible circuit board 41 between the panel body 10 and the circuit board 20, and sets the timing signal line 60 on the first flexible circuit board 41, thereby reducing the density of the signal lines in the panel body 10 and the temperature of the signal lines distributed in the panel body 10, thereby reducing the probability of the signal lines in the panel body 10 being burned due to high temperature.

[0040] Specifically, please continue to combine Figure 3 as well as Figure 4 The display panel includes a panel body 10 , a circuit board 20 , and a chip-on-film 30 .

[0041] In one embodiment, the COF 30 is connected between the panel body 10 and the circuit board 20, and because the COF 30 is flexible and can be bent, the circuit board 20 can be bent to the back side of the panel body 10 to reduce the border width of the display panel on the side where the circuit board 20 is provided.

[0042] It should be noted that the number of the chip-on-film 30 is at least one, and the number of the chip-on-film 30 can be multiple. The figures provided in the embodiments of the present invention take the number of the chip-on-film 30 as an example for explanation.

[0043] In one embodiment, the circuit board 20 may include a variety of signal transmission or control units, such as a level conversion circuit 21, a power management integrated circuit 22, a timing controller 23 and an interface 24, and at least part of the signal lines are connected to the signal transmission or control unit on the circuit board 20 and extend into the panel body 10 to transmit electrical signals to the panel body 10 to achieve a display function.

[0044] Furthermore, the display panel includes a data signal line 50 and a timing signal line 60, wherein the data signal line 50 is arranged on the flip chip film 30 and extends into the panel body 10; in order to avoid the signal lines in the panel body 10 being too dense, the utility model further provides a first flexible circuit board 41 in the display panel, and the first flexible circuit board 41 is connected between the panel body 10 and the circuit board 20; the utility model arranges the timing signal line 60 on the first flexible circuit board 41 and extends into the panel body 10, thereby reducing the distribution density of the signal lines in the panel body 10, reducing the temperature of the panel body 10 on the side close to the flip chip film 30 and the first flexible circuit board 41, and reducing the probability of the signal lines of the panel body 10 on the side close to the flip chip film 30 and the first flexible circuit board 41 being burned due to high temperature.

[0045] In one embodiment, the panel body 10 includes a binding side 101 and a first side 102 connected to the binding side 101, one end of the chip-on-chip film 30 is connected to the binding side 101, the other end of the chip-on-chip film 30 is connected to the circuit board 20, one end of the first flexible circuit board 41 is connected to the binding side 101, and the other end of the first flexible circuit board 41 is connected to the circuit board 20; wherein the first flexible circuit board 41 is located on one side of at least one chip-on-chip film 30 close to the first side 102, that is, in the utility model, the first flexible circuit board 41 is arranged at the outermost side of the panel body 10.

[0046] The timing signal line 60 includes a first line segment 61 extending into the panel body 10 , and the first line segment 61 extends in a direction perpendicular to the binding side 101 . The data signal line 50 includes a second line segment 51 extending into the panel body 10, and the display panel includes at least two timing signal lines 60, and the spacing between two adjacent first line segments 61 of two adjacent timing signal lines 60 is smaller than the spacing between the first line segment 61 and the second line segment 51; that is, after the first flexible circuit board 41 is added to the embodiment of the utility model, the timing signal line 60 can be separated separately and arranged along the first flexible circuit board 41, so that the timing signal line 60 can extend into the panel body 10 in a direction perpendicular to the binding side 101, without the need to bend and extend like the data signal line 50, and the spacing between the timing signal line 60 and the data signal line 50 is increased, the signal line distribution density of the panel body 10 near the binding side 101 is reduced, the temperature of the panel body 10 near the chip-on-chip film 30 and the first flexible circuit board 41 is reduced, and the probability of the signal line of the panel body 10 near the chip-on-chip film 30 and the first flexible circuit board 41 being burned due to high temperature is reduced.

[0047] It can be understood that the number of timing signal lines 60 and data signal lines 50 shown in the diagrams provided in the embodiments of the present invention is only an example, and the actual number is not limited thereto.

[0048] In one embodiment, please combine Figure 3 as well as Figure 5 A driving chip 31 is disposed on the COF 30 , the data signal line 50 is connected to the driving chip 31 , and the signal line on the first flexible circuit board 41 only includes the timing signal line 60 .

[0049] In one embodiment, the width of the first flexible circuit board 41 in a direction parallel to the binding side 101 is smaller than the width of the flip chip film 30 in a direction parallel to the binding side 101; since only signal lines, such as the timing signal lines 60, are provided on the first flexible circuit board 41, and no other devices, such as the driver chip 31, are required, the width of the first flexible circuit board 41 is small, and no additional space is required to set the first flexible circuit board 41, and the area of ​​at least one flip chip film 30 close to the first side 102 is sufficient to accommodate the first flexible circuit board 41, therefore, the setting of the first flexible circuit board 41 does not occupy additional space of the display panel, simplifies the process, and reduces the cost.

[0050] Furthermore, a first gate driving circuit 71 is provided in the panel body 10 near the first side 102, a level conversion circuit 21 is provided on the circuit board 20, one end of the timing signal line 60 is connected to the level conversion circuit 21, and the other end of the timing signal line 60 passes through the first flexible circuit board 41 and is connected to the first gate driving circuit 71; one end of the data signal line 50 is connected to the driving chip 31 on the chip-on-film 30, and the other end extends into the panel body 10 and can be connected to the pixel circuit in the panel body 10.

[0051] In one embodiment, the timing signal line 60 also includes a third line segment 62 arranged on the first flexible circuit board 41 and a fourth line segment 63 arranged on the circuit board 20, and the third line segment 62 is connected between the first line segment 61 and the fourth line segment 63, the first line segment 61 is connected to the first gate drive circuit 71, and the fourth line segment 63 is connected to the level conversion circuit 21; it should be noted that the first flexible circuit board 41 is connected to the panel body 10 through the first binding pad, the first flexible circuit board 41 is connected to the circuit board 20 through the second binding pad, and then the third line segment 62 is connected to the first line segment 61 through the first binding pad, and the third line segment 62 is connected to the fourth line segment 63 through the second binding pad.

[0052] The data signal line 50 also includes a fifth line segment 52 arranged on the chip-on-chip film 30, and the fifth line segment 52 is connected to the second line segment 51, the second line segment 51 is connected to the pixel circuit in the panel body 10, and the fifth line segment 52 is connected to the driving chip 31 on the chip-on-chip film 30; it should be noted that the chip-on-chip film 30 is connected to the panel body 10 through the third binding pad, the chip-on-chip film 30 is connected to the circuit board 20 through the fourth binding pad, and then the fifth line segment 52 is connected to the second line segment 51 through the third binding pad.

[0053] In one embodiment of the present utility model, please combine Figure 5 , Figure 6 , Figure 7 as well as Figure 8 ,in, Figure 5 The same can be Figure 6 Schematic diagram of the locally enlarged structure of A in the middle.

[0054] The panel body 10 also includes a second side 103 arranged opposite to the first side 102, and a second gate driving circuit 72 arranged near the second side 103; therefore, the display panel also has timing signal lines 60 distributed near the second side 103, that is, there are multiple timing signal lines 60, and some are located at the display panel near the first side 102, and the other part is located at the display panel near the second side 103.

[0055] Specifically, the embodiment of the utility model further adds a second flexible circuit board 42 in the display panel, and the second flexible circuit board 42 is arranged on a side of at least one flip chip film 30 close to the second side edge 103, and part of the timing signal line 60 is arranged on the second flexible circuit board 42 and extends into the panel body 10 through the second flexible circuit board 42 to be connected to the second gate drive circuit 72.

[0056] It can be understood that the configuration of the second flexible circuit board 42 and the configuration of the timing signal line 60 distributed on the second flexible circuit board 42 can be performed with reference to the configuration of the first flexible circuit board 41 and the configuration of the timing signal line 60 distributed on the first flexible circuit board 41, and the second flexible circuit board 42 and the first flexible circuit board 41 can be symmetrically distributed.

[0057] For the timing signal line 60 distributed on the second flexible circuit board 42, the timing signal line 60 includes a first line segment 61 extending into the panel body 10 and connected to the second gate driving circuit 72, a third line segment 62 arranged on the second flexible circuit board 42, and a fourth line segment 63 arranged on the circuit board 20, and the fourth line segment 63 is connected to the level conversion circuit 21 on the circuit board 20. It should be noted that the first flexible circuit board 41 is connected to the panel body 10 through the first binding pad, the first flexible circuit board 41 is connected to the circuit board 20 through the second binding pad, and then the third line segment 62 is connected to the first line segment 61 through the first binding pad, and the third line segment 62 is connected to the fourth line segment 63 through the second binding pad.

[0058] In one embodiment, the signal lines on the second flexible circuit board 42 only include the timing signal lines 60 .

[0059] In one embodiment, the width of the second flexible circuit board 42 in a direction parallel to the binding side 101 is smaller than the width of the flip chip film 30 in a direction parallel to the binding side 101; since only signal lines, such as the timing signal lines 60, are provided on the second flexible circuit board 42, and no other devices, such as the driver chip 31, are required, the width of the second flexible circuit board 42 is small, and no additional space is required to set the second flexible circuit board 42, and the area of ​​at least one flip chip film 30 close to the second side 103 is sufficient to accommodate the second flexible circuit board 42, therefore, the setting of the second flexible circuit board 42 does not occupy additional space of the display panel, simplifies the process, and reduces the cost.

[0060] As mentioned above, in the embodiment of the present invention, the spacing between two adjacent first line segments 61 of two adjacent timing signal lines 60 is smaller than the spacing between the first line segment 61 and the second line segment 51; that is, after the first flexible circuit board 41 and the second flexible circuit board 42 are added to the embodiment of the present invention, the timing signal line 60 can be separated separately and arranged along the first flexible circuit board 41 and the second flexible circuit board 42, so that the timing signal line 60 can be extended into the panel body 10 along the direction perpendicular to the binding side 101, without the need to be bent and extended like the data signal line 50, and the spacing between the timing signal line 60 and the data signal line 50 is increased, the distribution density of the signal line of the panel body 10 near the binding side 101 is reduced, the temperature of the panel body 10 near the flip chip film 30, the first flexible circuit board 41, and the second flexible circuit board 42 is reduced, and the probability of the signal line of the panel body 10 near the flip chip film 30, the first flexible circuit board 41, and the second flexible circuit board 42 being burned due to high temperature is reduced.

[0061] Also, please refer to Fig. 9The embodiment of the utility model further provides a display device 80, which includes the display panel 800 described in the above embodiment.

[0062] In one embodiment, the display device 80 can be a liquid crystal display device, and the display panel 800 described in the above embodiment includes an array substrate and a color film substrate that are relatively arranged, and a liquid crystal layer arranged between the array substrate and the color film substrate, and the structures in the display panel described in the above embodiment can all be structures in the array substrate, such as the chip-on-film 30, the circuit board 20, the first flexible circuit board 41, the second flexible circuit board 42, the data signal line 50, and the timing signal line 60.

[0063] In addition, the display device 80 further includes a backlight module disposed on the back side of the display panel 800 .

[0064] In other embodiments of the present invention, the display device 80 may also be an organic light emitting diode display device, which is not limited herein.

[0065] It can be understood that in the display device 80 provided by the present invention, by adding a first flexible circuit board 41 between the panel body 10 and the circuit board 20, and setting the timing signal line 60 on the first flexible circuit board 41, the density of the signal lines in the panel body 10 can be reduced, and the temperature in the area can be reduced, thereby reducing the probability of the signal lines in the panel body 10 being burned due to high temperature.

[0066] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0067] The above is a detailed introduction to a display panel and a display device provided in an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present invention. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: include: Panel body; A circuit board, located on one side of the panel body; At least one chip-on-film, one end of the chip-on-film is connected to the panel body, and the other end of the chip-on-film is connected to the circuit board; A first flexible circuit board, one end of the first flexible circuit board is connected to the panel body, and the other end of the first flexible circuit board is connected to the circuit board; The display panel further includes data signal lines and timing signal lines. The data signal lines are arranged on the chip-on-film and extend into the panel body. The timing signal lines are arranged on the first flexible circuit board and extend into the panel body.

2. The display panel according to claim 1, characterized in that: The panel body includes a binding side and a first side connected to the binding side, one end of the chip-on-film is connected to the binding side, the other end of the chip-on-film is connected to the circuit board, one end of the first flexible circuit board is connected to the binding side, and the other end of the first flexible circuit board is connected to the circuit board; Wherein, the first flexible circuit board is located on a side of at least one of the COFs close to the first side edge.

3. The display panel according to claim 2, characterized in that: The timing signal line includes a first line segment extending into the panel body, and the first line segment extends in a direction perpendicular to the binding side.

4. The display panel according to claim 3, characterized in that: The data signal line includes a second line segment extending into the panel body, the display panel includes at least two timing signal lines, and the spacing between two adjacent first line segments of two adjacent timing signal lines is smaller than the spacing between the first line segment and the second line segment.

5. The display panel according to claim 2, characterized in that: The width of the first flexible circuit board in a direction parallel to the binding side is smaller than the width of the COF in a direction parallel to the binding side.

6. The display panel according to claim 2, characterized in that: A first gate drive circuit close to the first side is arranged in the panel body, a level conversion circuit is arranged on the circuit board, one end of the timing signal line is connected to the level conversion circuit, and the other end of the timing signal line passes through the first flexible circuit board and is connected to the first gate drive circuit.

7. The display panel according to any one of claims 2 to 6, characterized in that: The panel body further includes a second side edge connected to the binding side edge, and the second side edge is arranged opposite to the first side edge; The display panel also includes a plurality of the timing signal lines and a second flexible circuit board, the second flexible circuit board is arranged on a side of at least one of the flip chip films close to the second side edge, and some of the timing signal lines are also arranged on the second flexible circuit board and extend into the panel body.

8. The display panel according to claim 7, characterized in that: A second gate driving circuit is arranged in the panel body near the second side, one end of some of the timing signal lines is connected to the circuit board, and the other end of some of the timing signal lines passes through the second flexible circuit board and is connected to the second gate driving circuit.

9. The display panel according to claim 1, characterized in that: A driving chip is arranged on the flip chip, the data signal line is connected to the driving chip, and the signal line on the first flexible circuit board only includes the timing signal line.

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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