Display panel and display device

Abstract

The utility model provides a display panel and a display device. The display panel comprises a display area and a bonding area, the bonding area is located on one side of the display area and comprises a first terminal area, a second terminal area and a filling area located between the first terminal area and the second terminal area; the first type of panel terminals are arranged in the first terminal area; a part of the second type panel terminal is arranged in the second terminal area, and a part of the second type panel terminal is arranged in the filling area. According to the display panel provided by the invention, part of the second type panel terminal is arranged in the second terminal area, part of the second type panel terminal is arranged in the filling area, and the filling area is filled by utilizing the second type panel terminal, so that a film layer at a COP position can be stacked more uniformly, and deformation fracture caused by an overlarge bonding time period difference is avoided; meanwhile, the distance between the first type of panel terminals and the second type of panel terminals can be reduced, miniaturization of the driving chip can be achieved conveniently, and then a narrow frame is achieved.

Description

Technical Field

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

[0002] Compared with traditional LCD (Liquid Crystal Display) display technology, OLED (Organic Light-Emitting Diode) has the advantages of active luminescence, light weight, fast response speed, good stability, low driving voltage, and high contrast, so it is widely used in display panels.

[0003] However, the performance of existing display panels needs to be improved. Summary of the invention

[0004] In view of this, the purpose of the present disclosure is to provide a display panel that avoids deformation and fracture during bonding and facilitates miniaturization of a driver chip.

[0005] Based on the above purpose, the present disclosure provides a display panel, which includes:

[0006] Display area;

[0007] A bonding area, located at one side of the display area, the bonding area comprising a first terminal area, a second terminal area and a filling area between the first terminal area and the second terminal area;

[0008] The first type of panel terminals are arranged in the first terminal area;

[0009] The second type of panel terminals are partially arranged in the second terminal area and partially arranged in the filling area.

[0010] In one embodiment, the second type of panel terminals includes multiple groups of panel terminals distributed along the second direction, each group of panel terminals includes multiple panel terminals arranged one by one along the first direction, and the panel terminals in two adjacent groups of panel terminals are staggered one by one along the second direction, and the second direction intersects with the first direction.

[0011] In one embodiment, the second type of panel terminals includes a first group of panel terminals and a second group of panel terminals distributed along a second direction, the first group of panel terminals is located between the first type of panel terminals and the second group of panel terminals, and the second group of panel terminals is partially located in the second terminal area;

[0012] The first group of panel terminals includes a plurality of first panel terminals arranged one by one at intervals along a first direction, and the second group of panel terminals includes a plurality of second panel terminals arranged one by one at intervals along the first direction.

[0013] In one embodiment, a first gap is formed between adjacent first panel terminals, and a second gap is formed between adjacent second panel terminals;

[0014] The orthographic projection of the second panel terminal in the second direction is at least partially located in the first gap, and the orthographic projection of the first panel terminal in the second direction is at least partially located in the second gap.

[0015] In one embodiment, the first type of panel terminals includes a plurality of panel terminals arranged one by one and spaced apart along a first direction.

[0016] In one embodiment, it also includes a driving chip, which is arranged in the bonding area, and the driving chip includes a first type of chip terminal and a second type of chip terminal, the first type of chip terminal is electrically connected to the first type of panel terminal, and the second type of chip terminal is electrically connected to the second type of panel terminal.

[0017] In one embodiment, the first type of chip terminals are input terminals, and the second type of chip terminals are output terminals; or,

[0018] The first type of chip terminals are output terminals, and the second type of chip terminals are input terminals.

[0019] In one embodiment, the distance between the first type of panel terminals and the second type of panel terminals is greater than or equal to 25um and less than 155um.

[0020] In one embodiment, the number of panel terminals in the second type of panel terminals is greater than the number of panel terminals in the first type of panel terminals.

[0021] Based on the same inventive concept, the present disclosure also provides a display device, which includes the display panel as described above.

[0022] Compared with the prior art, a display panel provided by the present invention arranges part of the second-type panel terminals in the second terminal area and part of them in the filling area, and fills the filling area with the second-type panel terminals, so that the film layer stacking at the COP (Chipon Panel) position can be more uniform, and deformation and fracture caused by excessive bonding time difference can be avoided; at the same time, the distance between the first-type panel terminals and the second-type panel terminals can be reduced, which is convenient for miniaturizing the driving chip and further realizing a narrow frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 is a top view of an existing display panel;

[0025] Figure 2 for Figure 1 Film cross-section along the Y direction;

[0026] Figure 3 A schematic diagram of a bonding area of ​​an existing display panel;

[0027] Figure 4 is a cross-sectional view of a film layer of a display panel in one embodiment of the present disclosure;

[0028] Figure 5 is a schematic diagram of a bonding area of ​​a display panel in an embodiment of the present disclosure;

[0029] Figure 6 is a schematic diagram of a bonding area of ​​a display panel in another embodiment of the present disclosure;

[0030] Figure 7 is a schematic diagram of a bonding area of ​​a display panel in another embodiment of the present disclosure;

[0031] Figure 8 is a schematic diagram of a bonding area of ​​a display panel in another embodiment of the present disclosure;

[0032] Fig. 9 FIG. 4 is a schematic diagram of a driving chip of a display panel in another embodiment of the present disclosure.

[0033] Marking description: 100, display panel; 110, screen body; 120, conductive adhesive; 130, pressure-sensitive adhesive; 140, protective film; 1, display area; 2, bonding area; 21, first terminal area; 22, second terminal area; 23, filling area; 3, first type of panel terminal; 4, second type of panel terminal; 41, first group of panel terminals; 411, first gap; 42, second group of panel terminals; 421, second gap; 43, third group of panel terminals; 431, third gap; 5, driver chip; 51, first type of chip terminal; 52, second type of chip terminal; 6, chip terminal; 7, panel terminal; 8, crack. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0035] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] Reference Figure 1-3 As shown, an existing display panel 100 includes a display area 1 and a bonding area 2. The bonding area 2 is located on one side of the display area 1. The bonding area 2 is provided with a driving chip 5. The driving chip 5 includes a chip terminal 6. The bonding area 2 is provided with a panel terminal 7. The panel terminal 7 is electrically connected to the chip terminal 6.

[0037] Specifically, refer to Figure 2 As shown, the display panel 100 includes a driving chip 5 and a screen body 110, a chip terminal 6 is provided on the side of the driving chip 5 facing the screen body 110, a panel terminal 7 is provided on the side of the screen body 110 facing the driving chip 5, a conductive adhesive 120 is provided between the driving chip 5 and the screen body 110, the chip terminal 6 and the panel terminal 7 are electrically connected through the conductive adhesive 120, a protective film 140 is also provided on the side of the screen body 110 away from the driving chip 5, and a pressure-sensitive adhesive 130 is provided between the screen body 110 and the protective film 140.

[0038] Reference Figure 2 and 3 As shown, the bonding area 2 includes a first terminal area 21, a second terminal area 22, and a filling area 23 located between the first terminal area 21 and the second terminal area 22. The first terminal area 21 is provided with a first type of panel terminal 3, and the second terminal area 22 is provided with a second type of panel terminal 4. Usually, in the absence of a requirement for a narrow frame of the display panel, the width d (the width direction is the Y direction in the figure) of the filling area 23 is relatively large, usually 155um or more, and a support column needs to be filled in the filling area 23, and a support column is also provided on the driver chip 5 accordingly.

[0039] As the demand for narrow frame of display panel becomes higher and higher, reducing the size of driver chip 5 becomes an important option to reduce the frame. When the size of driver chip 5 is reduced, in order to adapt to driver chip 5, the width of filling area 23 also needs to be reduced accordingly. At this time, the process difficulty of filling support column in filling area 23 increases. Therefore, filling area 23 is sometimes directly set as blank area. The inventor found that in this case, during the bonding process of driver chip 5, the deformation stress of the film layer between the first type panel terminal 3 and the second type panel terminal 4 is uneven, thereby generating cracks 8, which causes the display panel to be defective during reliability test.

[0040] Reference Figure 1 , 4 As shown in FIG. 5 , in view of the discovery of the above problems, an embodiment of the present disclosure provides a display panel, which includes: a display area 1 , a bonding area 2 , a first type of panel terminal 3 and a second type of panel terminal 4 .

[0041] The bonding area 2 is located on one side of the display area 1, and includes a first terminal area 21, a second terminal area 22, and a filling area 23 located between the first terminal area 21 and the second terminal area 22. The first type of panel terminal 3 is arranged in the first terminal area 21, and the second type of panel terminal 4 is partially arranged in the second terminal area 22 and partially arranged in the filling area 23.

[0042] A display panel provided in this embodiment sets part of the second-type panel terminals 4 in the second terminal area 22 and part of them in the filling area 23, and fills the filling area 23 with the second-type panel terminals 4, so that the film layer stacking at the COP position can be more uniform, avoiding deformation and fracture caused by excessive bonding time difference.

[0043] Preferably, the distance d between the first type panel terminal 3 and the second type panel terminal 4 is greater than or equal to 25um and less than 155um. For example, 25um, 30um, 50um, 100, 150um, etc. That is, by filling the filling area 23, the distance between the first type panel terminal 3 and the second type panel terminal 4 is shortened.

[0044] Further, refer to Figure 4 As shown, the display panel 100 includes a driver chip 5 and a screen body 110. The side of the driver chip 5 facing the screen body 110 is provided with a chip terminal 6. The side of the screen body 110 facing the driver chip 5 is provided with a panel terminal 7. A conductive adhesive 120 is provided between the driver chip 5 and the screen body 110. The chip terminal 6 and the panel terminal 7 are electrically connected through the conductive adhesive 120. A protective film 140 is also provided on the side of the screen body 110 away from the driver chip 5. A pressure-sensitive adhesive 130 is provided between the screen body 110 and the protective film 140. Figure 4 and Figure 2By comparison, it can be seen that the distance between the first type panel terminal 3 and the second type panel terminal 4 is significantly reduced, that is, the span of the first type panel terminal 3 and the second type panel terminal 4 in the Y direction becomes smaller, which facilitates the miniaturization of the driving chip 5 and further realizes a narrow frame.

[0045] Reference Figure 5 As shown, in one embodiment, the second type of panel terminal 4 includes multiple groups of panel terminals distributed along the second direction (such as the Y direction in the figure), and each group of panel terminals includes multiple panel terminals arranged one by one along the first direction (such as the X direction in the figure); the specific second type of panel terminal 4 may include a first group of panel terminals 41 and a second group of panel terminals 42, the first group of panel terminals 41 is located between the first type of panel terminals 3 and the second group of panel terminals 42, and the second group of panel terminals 42 is partially located in the second terminal area 22; the first group of panel terminals 41 includes multiple first panel terminals arranged one by one along the first direction (such as the X direction in the figure), and the second group of panel terminals 42 includes multiple second panel terminals arranged one by one along the first direction; the panel terminals in two adjacent groups of panel terminals are arranged one by one along the second direction, and the second direction intersects with the first direction. In one embodiment, the second direction is perpendicular to the first direction, and in another embodiment, the second direction can be 80 degrees, 85 degrees, etc. with the first direction.

[0046] Reference Figure 6 As shown, in another embodiment, the second type of panel terminals 4 include a first group of panel terminals 41, a second group of panel terminals 42 and a third group of panel terminals 43 which are distributed in sequence away from the first type of panel terminals 3 along the second direction, the first group of panel terminals 41 include a plurality of first panel terminals arranged one by one along the first direction, the second group of panel terminals 42 include a plurality of second panel terminals arranged one by one along the first direction, and the third group of panel terminals 43 include a plurality of third panel terminals arranged one by one along the first direction; the panel terminals in any two adjacent groups of panel terminals are arranged one by one along the second direction. Among them, the first group of panel terminals 41 are all located in the filling area 23, the second group of panel terminals 42 are partially located in the filling area 23 and partially located in the second terminal area 22, and the third group of panel terminals 43 are all located in the second terminal area 22; or, the first group of panel terminals 41 are all located in the filling area 23, the second group of panel terminals 42 are all located in the second terminal area 22, and the third group of panel terminals 43 are partially located in the filling area 23 and partially located in the second terminal area 22; or, the first group of panel terminals 41 are partially located in the filling area 23 and partially located in the second terminal area 22, the second group of panel terminals 42 are all located in the second terminal area 22, and the third group of panel terminals 43 are all located in the second terminal area 22. Further, the second type of panel terminals 4 may also include a fourth group of panel terminals, a fifth group of panel terminals, etc.

[0047] Reference Figure 7As shown, in one embodiment, the second type of panel terminals 4 include a first group of panel terminals 41 and a second group of panel terminals 42 distributed along the second direction, the first group of panel terminals 41 are located between the first type of panel terminals 3 and the second group of panel terminals 42, and the second group of panel terminals 42 are partially located in the second terminal area 22; the first group of panel terminals 41 include a plurality of first panel terminals arranged one by one along the first direction, and the second group of panel terminals 42 include a plurality of second panel terminals arranged one by one along the first direction.

[0048] Furthermore, a first gap 411 is formed between adjacent first panel terminals, and a second gap 421 is formed between adjacent second panel terminals; the orthographic projection of the second panel terminal in the second direction is at least partially located in the first gap 411, and the orthographic projection of the first panel terminal in the second direction is at least partially located in the second gap 421. The panel terminals are arranged in multiple triangles to improve stability and deformation resistance, thereby further avoiding deformation during the bonding process.

[0049] Reference Figure 8 As shown, in one embodiment, the second type of panel terminals 4 include a first group of panel terminals 41, a second group of panel terminals 42 and a third group of panel terminals distributed in sequence away from the first type of panel terminals 3 along the second direction, the first group of panel terminals 41 include a plurality of first panel terminals arranged one by one along the first direction, the second group of panel terminals 42 include a plurality of second panel terminals arranged one by one along the first direction, and the third group of panel terminals 43 include a plurality of third panel terminals arranged one by one along the first direction.

[0050] Among them, a first gap 411 is formed between adjacent first panel terminals, a second gap 421 is formed between adjacent second panel terminals, and a third gap 431 is formed between adjacent third panel terminals; the orthographic projection of the second panel terminal in the second direction is at least partially located in the first gap 411, and the orthographic projection of the third panel terminal in the second direction is at least partially located in the second gap 421. The stability and deformation resistance can be further improved, thereby further avoiding deformation during the bonding process. Furthermore, the second type of panel terminals 4 can also include a fourth group of panel terminals, a fifth group of panel terminals, etc.

[0051] In one embodiment, the first type of panel terminals 3 includes a plurality of panel terminals spaced one by one along the first direction. Further, the number of panel terminals in each group of panel terminals in the second type of panel terminals 4 is equal to the number of panel terminals in the first type of panel terminals 3. It can be achieved that one input corresponds to multiple outputs, or multiple inputs correspond to one output.

[0052] Reference Fig. 9As shown, in one embodiment, the display panel further includes a driving chip 5, which is arranged in the bonding area 2, and the driving chip 5 includes a first type chip terminal 51 and a second type chip terminal 52, the first type chip terminal 51 is electrically connected to the first type panel terminal 3, and the second type chip terminal 52 is electrically connected to the second type panel terminal 4. The bonding of the driving chip 5 is realized.

[0053] In one embodiment, the first type panel terminal 3 is an input terminal, and the second type panel terminal 4 is an output terminal; in another embodiment, the first type panel terminal 3 is an output terminal, and the second type panel terminal 4 is an input terminal. That is, the filling area 23 can be filled with input terminals or output terminals.

[0054] In one embodiment, the first type chip terminal 51 is an input terminal, and the second type chip terminal 52 is an output terminal; in another embodiment, the first type chip terminal 51 is an output terminal, and the second type chip terminal 52 is an input terminal. Specifically, when the first type panel terminal 3 is an input terminal and the second type panel terminal 4 is an output terminal, the first type chip terminal 51 is an input terminal, and the second type chip terminal 52 is an output terminal; when the first type panel terminal 3 is an output terminal and the second type panel terminal 4 is an input terminal, the first type chip terminal 51 is an output terminal, and the second type chip terminal 52 is an input terminal.

[0055] In one embodiment, the number of panel terminals in the second type of panel terminals 4 is greater than the number of panel terminals in the first type of panel terminals 3. That is, the panel terminals of the type with a larger number are filled in the filling area 23, so as to be arranged in multiple groups along the second direction, ensure the filling density, make the film layer stacking at the COP position more uniform, and avoid deformation and fracture caused by excessive time difference in bonding.

[0056] In one embodiment, the area of ​​the panel terminals in the second type of panel terminals 4 is smaller than the area of ​​the panel terminals in the first type of panel terminals 3 .

[0057] In one embodiment, the shape of the panel terminals in the second type of panel terminals 4 includes a square, a rectangle or other regular shapes; the shape of the panel terminals in the first type of panel terminals 3 includes a square, a rectangle or other regular shapes.

[0058] Another embodiment of the present disclosure discloses a display device, which includes the display panel in the above embodiment. Further, the display device includes a mobile phone, VR equipment, computer, television, car display equipment, etc.

[0059] While the disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0060] The embodiments of the present disclosure are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the present disclosure.

[0061] It should be noted that the above describes some embodiments of the present disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0062] The embodiments of the present disclosure are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A display panel, characterized in that: include: Display area; A bonding area, located at one side of the display area, the bonding area comprising a first terminal area, a second terminal area and a filling area between the first terminal area and the second terminal area; The first type of panel terminals are arranged in the first terminal area; The second type of panel terminals are partially arranged in the second terminal area and partially arranged in the filling area.

2. The display panel according to claim 1, wherein: The second type of panel terminals includes multiple groups of panel terminals distributed along the second direction, each group of panel terminals includes multiple panel terminals arranged one by one along the first direction, and the panel terminals in two adjacent groups of panel terminals are staggered one by one along the second direction, and the second direction intersects with the first direction.

3. The display panel according to claim 2, wherein: The second type of panel terminals includes a first group of panel terminals and a second group of panel terminals distributed along a second direction, the first group of panel terminals is located between the first type of panel terminals and the second group of panel terminals, and the second group of panel terminals is partially located in the second terminal area; The first group of panel terminals includes a plurality of first panel terminals arranged one by one at intervals along a first direction, and the second group of panel terminals includes a plurality of second panel terminals arranged one by one at intervals along the first direction.

4. The display panel according to claim 3, wherein: A first gap is formed between adjacent first panel terminals, and a second gap is formed between adjacent second panel terminals; The orthographic projection of the second panel terminal in the second direction is at least partially located in the first gap, and the orthographic projection of the first panel terminal in the second direction is at least partially located in the second gap.

5. The display panel according to claim 1, wherein: The first type of panel terminals includes a plurality of panel terminals arranged one by one and spaced apart along a first direction.

6. The display panel according to claim 1, wherein: It also includes a driving chip, which is arranged in the bonding area. The driving chip includes a first type of chip terminal and a second type of chip terminal. The first type of chip terminal is electrically connected to the first type of panel terminal, and the second type of chip terminal is electrically connected to the second type of panel terminal.

7. The display panel according to claim 6, wherein: The first type of chip terminals are input terminals, and the second type of chip terminals are output terminals; or, The first type of chip terminals are output terminals, and the second type of chip terminals are input terminals.

8. The display panel according to claim 1, wherein: The distance between the first type of panel terminals and the second type of panel terminals is greater than or equal to 25um and less than 155um.

9. The display panel according to claim 1, wherein: The number of panel terminals in the second type of panel terminals is greater than the number of panel terminals in the first type of panel terminals.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1 to 9.

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