Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a driving module arranged on one side of a display area, at least comprising a first driving chip and a second driving chip, and the arrangement direction of the first driving chip to the second driving chip is set as a first direction; a fan-shaped wiring area comprising a plurality of wirings, the plurality of wirings connecting the display area and the driving module; a power supply module comprising a circuit board arranged between the first driving chip and the second driving chip, a plurality of power supply pins arranged at intervals along the first direction on the circuit board, and a power supply wiring connecting the driving module and the power supply pins, each power supply pin and the power supply wiring are connected one by one, and the projection parts of two adjacent power supply pins in the first direction are coincident. The application sets the circuit board between the first driving chip and the second driving chip arranged at intervals, and fully utilizes the space between the first driving chip and the second driving chip to realize a narrow frame.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel and display device. Background Technology

[0002] With the development of display technology, users have increasingly higher requirements for the screen ratio of display panels, and narrow bezel design has become a major development trend for display panels.

[0003] The display panel has a display area and a non-display area. The non-display area contains several traces and components, which occupy a significant amount of space. The driver chip provides data signal voltage to the data lines in the display area to control the display of each pixel unit. The power supply module connects to the external power supply and the driver chip. The power supply module includes an FPC (Flexible Printed Circuit), which is located below the driver chip, thus failing to achieve optimal space utilization. Summary of the Invention

[0004] This application provides a display panel and display device, in which a circuit board is disposed between adjacent, spaced-apart first and second driver chips, thereby making full use of the space between the first and second driver chips to achieve a narrow bezel.

[0005] In a first aspect, embodiments of this application provide a display panel, including a display area and a non-display area surrounding the display area, the non-display area comprising:

[0006] A driving module is disposed on one side of the display area. The driving module includes at least a first driving chip and a second driving chip, and the arrangement direction of the first driving chip to the second driving chip is set as a first direction.

[0007] A fan-shaped wiring area, comprising multiple wirings, wherein the multiple wirings connect the display area and the driving module;

[0008] The power supply module includes a circuit board disposed between the first driver chip and the second driver chip, a plurality of power pins disposed on the circuit board at intervals along the first direction, and power traces connecting the driver module and the power pins. Each power pin is connected to the power trace in a one-to-one correspondence, and the projection portions of two adjacent power pins in the first direction overlap in the first direction.

[0009] In some embodiments, the portion of each power trace near the power pin extends along the first direction.

[0010] In some embodiments, the first driver chip and the second driver chip are symmetrically arranged along a center line, the center line being perpendicular to the first direction. The first power pin combination includes the power pins connected to the first driver chip, and the second power pin combination includes the power pins connected to the second driver chip. The connection line between each power pin of the first power pin combination is set as a first extension line, and the connection line between each power pin of the second power pin combination is set as a second extension line. The first extension line and the second extension line are not coincident.

[0011] In some embodiments, the fan-shaped trace area includes a first trace combination and a second trace combination symmetrically arranged along the center line. Both the first trace combination and the second trace combination include multiple traces. The traces of the first trace combination connect the display area and the first driver chip, and the traces of the second trace combination connect the display area and the second driver chip.

[0012] In some embodiments, the first extension line is parallel to the second extension line, the power pins in the first power pin combination that are far from the first driver chip are close to the fan-shaped trace area, and the power pins in the second power pin combination that are close to the second driver chip are close to the fan-shaped trace area.

[0013] In some embodiments, the first extension line intersects the second extension line, and the intersection of the first extension line and the second extension line is close to the fan-shaped trace area.

[0014] In some embodiments, the power supply module further includes an idle pin on the circuit board, which is not connected to the power supply trace.

[0015] In some embodiments, the power supply module further includes a shared pin on the circuit board, and each power supply pin is connected to at most one of the shared pins.

[0016] In some embodiments, the traces in the sector-shaped trace area have the same impedance.

[0017] Secondly, this application provides a display device, the display device including the display panel described in any one of the above claims.

[0018] In some embodiments, the display panel includes a display area and a non-display area surrounding the display area, the non-display area including:

[0019] A driving module is disposed on one side of the display area. The driving module includes at least a first driving chip and a second driving chip, and the arrangement direction of the first driving chip to the second driving chip is set as a first direction.

[0020] A fan-shaped wiring area, comprising multiple wirings, wherein the multiple wirings connect the display area and the driving module;

[0021] The power supply module includes a circuit board disposed between the first driver chip and the second driver chip, a plurality of power pins disposed on the circuit board at intervals along the first direction, and power traces connecting the driver module and the power pins. Each power pin is connected to the power trace in a one-to-one correspondence, and the projection portions of two adjacent power pins in the first direction overlap in the first direction.

[0022] In some embodiments, the portion of each power trace near the power pin extends along the first direction.

[0023] In some embodiments, the first driver chip and the second driver chip are symmetrically arranged along a center line, the center line being perpendicular to the first direction. The first power pin combination includes the power pins connected to the first driver chip, and the second power pin combination includes the power pins connected to the second driver chip. The connection line between each power pin of the first power pin combination is set as a first extension line, and the connection line between each power pin of the second power pin combination is set as a second extension line. The first extension line and the second extension line are not coincident.

[0024] In some embodiments, the fan-shaped trace area includes a first trace combination and a second trace combination symmetrically arranged along the center line. Both the first trace combination and the second trace combination include multiple traces. The traces of the first trace combination connect the display area and the first driver chip, and the traces of the second trace combination connect the display area and the second driver chip.

[0025] In some embodiments, the first extension line is parallel to the second extension line, the power pins in the first power pin combination that are far from the first driver chip are close to the fan-shaped trace area, and the power pins in the second power pin combination that are close to the second driver chip are close to the fan-shaped trace area.

[0026] In some embodiments, the first extension line intersects the second extension line, and the intersection of the first extension line and the second extension line is close to the fan-shaped trace area.

[0027] In some embodiments, the power supply module further includes an idle pin on the circuit board, which is not connected to the power supply trace.

[0028] In some embodiments, the power supply module further includes a shared pin on the circuit board, and each power supply pin is connected to at most one of the shared pins.

[0029] In some embodiments, the traces in the sector-shaped trace area have the same impedance.

[0030] The display panel and display device provided in this application embodiment have a circuit board disposed between adjacent first and second driver chips spaced apart. The power pins on the circuit board are spaced apart along a first direction, but not side by side. Instead, they are staggered in the vertical direction of the first direction to make full use of the space between the first and second driver chips. At the same time, the bending degree of the power pins on the circuit board and the power traces of the driver chips is reduced, thus achieving a narrow bezel and reducing power traces. Attached Figure Description

[0031] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of the structure of a display panel in an embodiment of this application, in which the first power supply pin combination and the second power supply pin combination are symmetrically arranged;

[0033] Figure 2 This is a schematic diagram of the structure of a display panel in which the first power pin combination and the second power pin combination are arranged in parallel, according to an embodiment of this application.

[0034] Figure 3 This is a schematic diagram of the structure of a display panel including idle pins and shared pins in an embodiment of this application.

[0035] Figure Labels

[0036] 100. Display area; 200. Non-display area; 210. Driver module; 211. First driver chip; 212. Second driver chip; 220. Fan-shaped trace area; 221. First trace combination; 222. Second trace combination; 230. Power supply module; 231. Circuit board; 232. Power supply pin; 233. Power supply trace; 234. Idle pin; 235. Shared pin. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0038] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0042] Please see Figure 1 This application provides a display panel, which includes a display area 100 (AA, Active Area) and a non-display area 200 surrounding the display area 100. The display area 100 is used to display images and includes multiple data lines extending along the column direction and multiple columns of pixel units. The parameters input to the data lines determine the color and brightness displayed by the corresponding connected pixel units. The non-display area 200 is used to set up circuit components, wiring and other structures.

[0043] The non-display area 200 includes a driving module 210, a fan-shaped trace area 220, and a power supply module 230. The driving module 210 is located on one side of the display area 100 and is used to provide data signal voltage to the data lines of the display area 100 to control the display of each pixel unit. The driving module 210 includes at least a first driving chip 211 and a second driving chip 212. The arrangement direction of the first driving chip 211 to the second driving chip 212 is set as a first direction, wherein the first direction is the extension direction of the edge of the display area 100 adjacent to the driving module 210, that is, the first direction is parallel to the edge of the display area 100 adjacent to the driving module 210. The driving chip includes the first driving chip 211 and the second driving chip 212.

[0044] The fan-shaped trace area 220 includes multiple traces that connect the data lines of the display area 100 and the driver chip of the driver module 210. Since the driver chip is much smaller than the display area 100, the traces are distributed in a fan shape. The first driver chip 211 and the second driver chip 212 are spaced apart, and there is a large space between the first driver chip 211 and the second driver chip 212.

[0045] The power supply module 230 includes a circuit board 231 (FPC, Flexible Printed Circuit), power pins 232 (Pad), and power traces 233. Since there is a large space between the first driver chip 211 and the second driver chip 212, the circuit board 231 is placed between them, rather than on the side of the driver module 210 away from the display area 100. This fully utilizes the space between adjacent driver chips in the driver module 210 to achieve a narrow bezel.

[0046] Each power supply pin 232 is located on the circuit board 231. Power supply traces 233 connect the driver chip of the driver module 210 to each power supply pin 232. The power supply module 230 is mounted on the glass substrate. The bonding positions of the pins on the circuit board 231 corresponding to the glass substrate side are FOG (FPC On Glass), because increasing the number of pins on the circuit board 231 can improve contact reliability. In addition, the power supply pins 232 on the circuit board 231 are connected to an external power supply, and power is supplied to each driver chip in the driver module 210 through the power supply traces 233, ultimately realizing the display of the image in the display area 100.

[0047] Each power pin 232 is connected to a power trace 233 in a one-to-one correspondence. Due to the limited size of the driver chip, the space between the first driver chip 211 and the second driver chip 212 in the direction perpendicular to the first direction is limited. Therefore, each power pin 232 is spaced apart along the first direction. If two adjacent power pins 232 are arranged side by side, that is, if the projections of two adjacent power pins 232 in the first direction completely overlap, the power traces 233 connecting each power pin 232 will be densely distributed on the circuit board 231, affecting the signal transmission effect. Therefore, the projections of two adjacent power pins 232 in the first direction partially overlap, that is, each power pin 232 is spaced apart along the first direction, but not side by side. Each power pin 232 has a portion of its area that is not blocked by the adjacent power pin 232, so as to connect the power trace 233.

[0048] In one embodiment, the portion of each power trace 233 near the power pin 232 extends along a first direction, meaning that the portion of each power trace 233 near the power pin 232 is not bent and is parallel to each other, reducing the total length of the power trace 233 and reducing resistance. The distribution of the portion of each power trace 233 near the driver chip depends on the distribution of the power input terminals in the driver chip, which will not be described in detail in this embodiment.

[0049] In one embodiment, the driver chips in the driver module 210 are chips with the same configuration parameters. The first driver chip 211 and the second driver chip 212 are arranged symmetrically along a center line, which is perpendicular to the first direction. Each power supply pin 232 connected to the first driver chip 211 is set as a first power supply pin 232 combination, and each power supply pin 232 connected to the second driver chip 212 is set as a second power supply pin 232 combination.

[0050] The connection lines between the power pins 232 in the first power pin 232 combination are designated as the first extension lines, and the connection lines between the power pins 232 in the second power pin 232 combination are designated as the second extension lines. The connection lines between the power pins 232 are lines connecting points at the same position on each power pin 232. For example, the first extension line is the line connecting the center points of the power pins 232 in the first power pin 232 combination. It should be noted that in actual fabrication, the power pins 232 may not be of a regular shape and may not be identical to each other. However, due to the small size of the power pins 232, the connection lines between the power pins 232 are actually lines connecting the positions of the power pins 232.

[0051] Since the first driver chip 211 and the second driver chip 212 are arranged along the first direction, and since the first driver chip 211 and the second driver chip 212 are arranged symmetrically along the center line, in order to ensure that the portion of each power trace 233 near the power pin 232 extends along the first direction without bending, the power pins 232 of the first power pin 232 combination and the second power pin 232 combination cannot be arranged along a single line. That is, when the power pins 232 of the first power pin 232 combination are arranged along the first extension line, the power pins 232 of the second power pin 232 combination cannot be arranged along the first extension line starting from the last power pin 232 in the first power pin 232 combination, that is, the first extension line and the second extension line cannot overlap.

[0052] Wherein, provided that each power supply pin 232 is staggered at intervals as required above, neither the first extension line nor the second extension line is parallel to the first direction.

[0053] like Figure 2 As shown, the first extension line and the second extension line are arranged in parallel, and there is a certain gap between the first extension line and the second extension line. Or as... Figure 1 As shown, the first extension line and the second extension line are intersecting. Or as... Figure 1As shown, the first extension line and the second extension line intersect and are symmetrically arranged along the center line. If the first extension line and the second extension line are symmetrically arranged along the center line, then the first power pin 232 assembly and the second power pin 232 assembly are symmetrically arranged along the center line. The symmetrical arrangement of multiple components with the same configuration parameters and functions reduces the difficulty of component placement and also ensures symmetry in the screen display.

[0054] In one embodiment, the first driver chip 211 and the second driver chip 212 are symmetrically arranged along a centerline perpendicular to a first direction. Correspondingly, the fan-shaped trace area 220 includes a first trace combination 221 and a second trace combination 222 symmetrically arranged along the centerline. Both the first trace combination 221 and the second trace combination 222 include multiple traces. The traces of the first trace combination 221 connect the display area 100 and the first driver chip 211, and the traces of the second trace combination 222 connect the display area 100 and the second driver chip 212. Since the driver chip is much smaller than the display area 100, the traces of the first trace combination 221 and the second trace combination 222 are both fan-shaped. Furthermore, since the first trace combination 221 and the second trace combination 222 are symmetrically arranged along the centerline, there is an inverted V-shaped blank area between the first trace combination 221 and the second trace combination 222 where no traces are arranged.

[0055] In one embodiment, there is an inverted V-shaped blank area between the first wiring combination 221 and the second wiring combination 222 where no wiring is arranged. Therefore, the power pins 232 on the circuit board 231 that extend beyond the space between the first driver chip 211 and the second driver chip 212 are arranged in the inverted V-shaped blank area between the first wiring combination 221 and the second wiring combination 222 to achieve a narrow bezel.

[0056] like Figure 2 As shown, when the first extension line and the second extension line are arranged in parallel, and there is a certain gap between the first extension line and the second extension line, the power pin 232 in the first power pin 232 combination that is far from the first driver chip 211 is close to the fan-shaped trace area 220, and the power pin 232 in the second power pin 232 combination that is close to the second driver chip 212 is close to the fan-shaped trace area 220. Figure 1 As shown, when the first extension line intersects with the second extension line, the intersection point of the first extension line and the second extension line is close to the fan-shaped trace area 220. That is, the power pins 232 on the circuit board 231 are arranged in the inverted V blank area between the first trace combination 221 and the second trace combination 222, which improves space utilization and achieves a narrow bezel.

[0057] In one embodiment, such as Figure 3As shown, the power supply module 230 also includes an idle pin 234 on the circuit board 231. The idle pin 234 is not connected to the power supply trace 233. The idle pin 234 is provided to improve the contact reliability between the circuit board 231 and the glass.

[0058] In one embodiment, such as Figure 3 As shown, the power supply module 230 also includes a shared pin 235 disposed on the circuit board 231. Each power supply pin 232 is connected to at most one shared pin 235; that is, a power supply pin 232 may be connected to one shared pin 235, or it may not be connected to any shared pin 235. The shared pin 235 is provided to improve the basic contact reliability between the circuit board 231 and the glass, while also reducing contact resistance.

[0059] In one embodiment, all traces in the fan-shaped trace region 220 have the same impedance. The thickness of the metal layer can be set differently for different traces; for example, the thickness of the metal layer can be related to the length of the fan-out traces in different sub-regions. Different compensation resistors can also be set on different traces on the driver chip side.

[0060] In this embodiment, the circuit board 231 is placed between the first driver chip 211 and the second driver chip 212 that are adjacent and spaced apart. The power pins 232 on the circuit board 231 are spaced apart along the first direction, but not side by side. Instead, they are staggered in the vertical direction of the first direction to make full use of the space between the first driver chip 211 and the second driver chip 212. At the same time, the bending degree of the power pins 232 on the circuit board 231 and the power traces 233 of the driver chip is reduced, thus achieving a narrow bezel and reducing the power traces 233.

[0061] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0062] In some embodiments of this application, a display device is provided, the display device including the display panel described in any of the above embodiments.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above provides a detailed description of a display panel and display device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A display panel comprising a display area and a non-display area surrounding the display area, characterized in that, The non-display area includes: A driving module is disposed on one side of the display area. The driving module includes at least a first driving chip and a second driving chip, and the arrangement direction of the first driving chip to the second driving chip is set as a first direction. A fan-shaped wiring area, comprising multiple wirings, wherein the multiple wirings connect the display area and the driving module; The power supply module includes a circuit board disposed between the first driver chip and the second driver chip, a plurality of power pins disposed on the circuit board at intervals along the first direction, and power traces connecting the driver module and the power pins. Each power pin is connected to the power trace in a one-to-one correspondence, and the projection portions of two adjacent power pins in the first direction overlap in the first direction. The first driver chip and the second driver chip are arranged symmetrically along a center line, which is perpendicular to the first direction; The sector-shaped trace area includes a first trace combination and a second trace combination arranged symmetrically along the center line. The power supply pins that extend beyond the space between the first driver chip and the second driver chip are arranged in the inverted V blank area between the first trace combination and the second trace combination.

2. The display panel as described in claim 1, characterized in that, The portion of each power trace near the power pin extends along the first direction.

3. The display panel as described in claim 2, characterized in that, The first power pin combination includes the power pins connected to the first driver chip, and the second power pin combination includes the power pins connected to the second driver chip. The connection between each power pin of the first power pin combination is set as a first extension line, and the connection between each power pin of the second power pin combination is set as a second extension line. The first extension line and the second extension line are not coincident.

4. The display panel as described in claim 3, characterized in that, Both the first wiring combination and the second wiring combination include multiple wirings. The wirings of the first wiring combination connect the display area and the first driver chip, and the wirings of the second wiring combination connect the display area and the second driver chip.

5. The display panel as described in claim 4, characterized in that, The first extension line is parallel to the second extension line. In the first power pin combination, the power pins away from the first driver chip are close to the fan-shaped trace area. In the second power pin combination, the power pins close to the second driver chip are close to the fan-shaped trace area.

6. The display panel as described in claim 4, characterized in that, The first extension line intersects the second extension line, and the intersection of the first extension line and the second extension line is close to the fan-shaped trace area.

7. The display panel as described in claim 1, characterized in that, The power supply module also includes an idle pin on the circuit board, which is not connected to the power supply trace.

8. The display panel as described in claim 1, characterized in that, The power supply module also includes a shared pin on the circuit board, and each power supply pin is connected to at most one of the shared pins.

9. The display panel as described in any one of claims 2 to 8, characterized in that, The impedance of each trace in the sector-shaped trace area is the same.

10. A display device, characterized in that, The display device includes a display panel as described in any one of claims 1-9.

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