Display device

Abstract

The invention discloses a display device. The display device comprises a display panel and at least one driving chip, the display panel comprises fan-out wires and binding terminals, and one fan-out wire is correspondingly and electrically connected with at least one binding terminal; the driving chip comprises a plurality of chip terminals; only the plurality of chip terminals in the middle area of the driving chip are electrically connected with the corresponding fan-out wires, or at least two chip terminals are electrically connected with one fan-out wire through a resolution switcher. According to the invention, only the plurality of chip terminals in the middle area of the driving chip are electrically connected with the corresponding fan-out wires, or at least two chip terminals are electrically connected with one fan-out wire through the resolution switcher, so that the driving chip suitable for the high-resolution display panel is applied to the low-resolution display panel, and the driving efficiency is improved. Due to the fact that the number of the printed circuit board components corresponding to the driving chip suitable for the high-resolution display panel is small, and the width is small, the narrow frame effect of the low-resolution display panel can be achieved.

Description

Technical Field

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

[0002] The consumer market has an increasingly higher demand for the image quality of display panels, and high-resolution display panels are gradually becoming the mainstream of the market. The driver chips used in high-resolution display panels have also become mainstream products in the market. They are updated and iterated quickly, and have more internally integrated functional modules. Therefore, the number of external components that need to be configured is also less. Usually, external components are configured on a printed circuit board. For a display device in a flattened state, the printed circuit board is arranged on one side of the display panel, and the number of components on the printed circuit board directly affects the width of the printed circuit board. However, the driver chips used in low-resolution display panels have a slower update and iteration speed, fewer internally integrated functional modules, and more external components that need to be configured, which is not conducive to achieving a narrow frame for a display device in a flattened state.

[0003] Therefore, it is urgent to solve the above technical problems. Summary of the invention

[0004] The present application provides a display device to solve the technical problem that a driver chip used in a low-resolution display panel cannot achieve a narrow frame, resulting in a lack of a suitable driver chip for the low-resolution display panel.

[0005] To solve the above technical problems, the technical solutions provided by this application are as follows:

[0006] The present application provides a display device, the display device comprising:

[0007] A display panel comprises a display area and a non-display area located on one side of the display area, wherein the non-display area comprises a fan-out area and a binding area, and the display panel comprises a plurality of fan-out wirings located in the fan-out area and a plurality of binding terminals located in the binding area, wherein one of the fan-out wirings is correspondingly connected to at least one of the binding terminals;

[0008] At least one driving chip, comprising a plurality of chip terminals for transmitting driving signals;

[0009] Among them, when the driving chip is applied to a low-resolution display panel, a plurality of chip terminals relatively located in the middle area of ​​the driving chip are electrically connected to the corresponding fan-out routings, and a plurality of chip terminals relatively located in the edge area of ​​the driving chip are not electrically connected to the fan-out routings, or at least two of the chip terminals are electrically connected to one of the fan-out routings through a resolution switch.

[0010] In the display device of the present application, the binding terminals include multiple first terminals and multiple fourth terminals, the chip terminals include multiple second terminals and multiple third terminals, the second terminal is bound and connected to the first terminal, the third terminal is bound and connected to the fourth terminal, the second terminal is located in the middle area of ​​the driving chip, the third terminal is located in the edge area of ​​the driving chip, the second terminal is electrically connected to the fan-out wiring, and the third terminal is configured not to be electrically connected to the fan-out wiring.

[0011] In the display device of the present application, the binding terminals include multiple first terminals and multiple fourth terminals, the chip terminals include multiple second terminals and multiple third terminals, one of the second terminals is bound and connected to one of the first terminals, one of the third terminals is bound and connected to one of the fourth terminals, and the resolution switcher includes multiple connecting wires arranged on the display panel, one end of one of the connecting wires is electrically connected to one of the fan-out wires, and the other end is electrically connected to one of the fourth terminals.

[0012] In the display device of the present application, the binding terminals include multiple first terminals and multiple fourth terminals, the chip terminals include multiple second terminals and multiple third terminals, one of the second terminals is bound and connected to one of the first terminals, and one of the third terminals is bound and connected to one of the fourth terminals. The resolution switcher includes multiple switching devices arranged on the driving chip, one of the switching devices is arranged between one of the second terminals and one of the third terminals, and the switching device is configured to make the second terminal and the third terminal conductive or disconnected.

[0013] In the display device of the present application, a plurality of the fan-out lines are connected to a plurality of the second terminals in the same row, or the fan-out lines are connected to a plurality of the second terminals in different rows.

[0014] In the display device of the present application, multiple fan-out lines are connected to multiple first terminals in the same row, multiple connecting lines are connected to multiple fourth terminals in the same row as the first terminals, or the connecting lines are connected to multiple fourth terminals in different rows from the first terminals.

[0015] In the display device of the present application, the number of the fourth terminals connected to the first terminal corresponding to the edge area of ​​the driving chip is greater than the number of the fourth terminals connected to the first terminal corresponding to the middle area of ​​the driving chip.

[0016] In the display device of the present application, in a direction from the edge area of ​​the driving chip to the middle area, the number of the fourth terminals corresponding to a fan-out wiring gradually increases.

[0017] In the display device of the present application, the plurality of fan-out lines are connected to the plurality of the first terminals in the same row, the switching device is arranged between the second terminal and the third terminal in the same row, or the switching device is arranged between the second terminal and the third terminal in different rows.

[0018] In the display device of the present application, the number of the third terminals connected to the second terminal corresponding to the edge area of ​​the driving chip is greater than the number of the third terminals connected to the second terminal corresponding to the middle area of ​​the driving chip.

[0019] In the display device of the present application, in a direction from the middle area to the edge area of ​​the driving chip, the number of the third terminals corresponding to a fan-out wiring gradually decreases.

[0020] In the display device of the present application, the driving chip includes a control terminal, and the control terminal is configured to make the third terminal be in a first state or a second state; in the first state, multiple third terminals all output driving signals; in the second state, none of the third terminals outputs driving signals.

[0021] In the display device of the present application, the display device includes a timing controller, which is connected to the driving chip, and the timing controller is configured to make the third terminal in a first state or a second state; in the first state, multiple third terminals all output driving signals; in the second state, none of the third terminals outputs driving signals.

[0022] Beneficial effects: The present application discloses a display device. The display device includes a display panel and at least one driver chip. The display panel includes a display area and a non-display area located on one side of the display area. The non-display area includes a fan-out area and a binding area. The display panel includes a plurality of fan-out traces located in the fan-out area and a plurality of binding terminals located in the binding area. One of the fan-out traces is correspondingly connected to one of the binding terminals. The driver chip includes a plurality of chip terminals for transmitting driving signals. When the driver chip is applied to a low-resolution display panel, the plurality of chip terminals located in the middle area of ​​the driver chip are electrically connected to the corresponding fan-out traces, and the plurality of chip terminals located in the edge area of ​​the driver chip are not electrically connected to the fan-out traces, or at least two of the chip terminals are electrically connected to one of the fan-out traces through a resolution switcher. The present application connects multiple chip terminals in the middle area of ​​the driver chip to the corresponding fan-out wirings, and does not connect multiple chip terminals in the edge area of ​​the driver chip to the fan-out wirings, so that a driver chip suitable for a high-resolution display panel can be applied to a low-resolution display panel, or at least two chip terminals are electrically connected to a fan-out wiring through a resolution switcher, so that a driver chip suitable for a high-resolution display panel can be applied to a low-resolution display panel. Since the printed circuit board corresponding to the driver chip suitable for the high-resolution display panel requires fewer components and the width of the printed circuit board is smaller, a narrow frame effect of a low-resolution display panel can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0024] Figure 1 A schematic diagram of a top view of a display device provided in an embodiment of the present application;

[0025] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of a driver chip of a display device;

[0026] Figure 3a for Figure 1 A schematic diagram of an enlarged local structure at B of the first display device;

[0027] Figure 3b for Figure 3a An enlarged schematic diagram of a local structure of a display panel;

[0028] Figure 3c for Figure 3a A schematic diagram of the enlarged local structure of the driver chip;

[0029] Figure 4a for Figure 1A schematic enlarged diagram of a local structure at B of the second display device;

[0030] Figure 4b for Figure 1 A schematic diagram of another partial structure enlarged at B of the second display device;

[0031] Figure 4c for Figure 4a An enlarged schematic diagram of a local structure of a display panel;

[0032] Figure 4d for Figure 4a A schematic diagram of the enlarged local structure of the driver chip;

[0033] Figure 4e for Figure 4b An enlarged schematic diagram of a local structure of a display panel;

[0034] Figure 4f for Figure 4b A schematic diagram of the enlarged local structure of the driver chip;

[0035] Figure 5a for Figure 1 A schematic diagram of a partial structure enlargement at B of the third display device;

[0036] Figure 5b for Figure 1 A schematic diagram of another partial structure enlargement at B of the third display device;

[0037] Figure 5c for Figure 5a An enlarged schematic diagram of a local structure of a display panel;

[0038] Figure 5d for Figure 5a A schematic diagram of the enlarged local structure of the driver chip;

[0039] Figure 5e for Figure 5b An enlarged schematic diagram of a local structure of a display panel;

[0040] Figure 5f for Figure 5b A schematic diagram of the enlarged local structure of the driver chip;

[0041] Figure 6 is an impedance curve of a fan-out trace of a display device in a comparative example;

[0042] Figure 7 FIG. 4 is an impedance curve of a fan-out line of a display device in an embodiment of the present application.

[0043] Description of reference numerals:

[0044] Display panel 1, display area AA, non-display area NA, binding area NA1, fan-out area NA2, fan-out trace 11, binding terminal 10, first terminal 12, fourth terminal 13, connecting trace 14, data line 15, sub-pixel 16, driver chip 2, chip terminal 20, second terminal 21, third terminal 22, middle area B1, edge area B2, switching device 23, control terminal 24, timing controller 3, flexible circuit board 41, printed circuit board 42, support frame 43, first direction D1, second direction D2. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; and "inside" and "outside" refer to the outline of the device.

[0046] The present application provides a display device, such as Figures 1 to 3c As shown, the display device includes a display panel 1, at least one driving chip 2, a printed circuit board 42 and a flexible circuit board 41, the display panel 1 includes a display area AA and a non-display area NA located on one side of the display area, the non-display area NA includes a fan-out area NA2 and a binding area NA1, the display panel 1 includes a plurality of fan-out traces 11 located in the fan-out area NA2 and a plurality of binding terminals 10 located in the binding area NA1, and a fan-out trace 11 is connected to at least one binding terminal 10; the driving chip 2 includes a plurality of chip terminals 20 for transmitting driving signals, and a chip terminal 20 is bound and connected to a binding terminal 10; the printed circuit board 42 is arranged on the display panel 1, a printed circuit board 42 is fixedly connected to the display panel 1; a flexible circuit board 41 is arranged between the printed circuit board 42 and the display panel 1, one end of the flexible circuit board 41 is bound and connected to the display panel 1, and the other end is bound and connected to the printed circuit board 42; wherein, when the driver chip 2 is applied to a low-resolution display panel, a plurality of chip terminals 20 of the driver chip 2 relatively located in the middle area B1 are electrically connected to the corresponding fan-out wiring 11, and a plurality of chip terminals 20 relatively located in the edge area B2 of the driver chip 2 are not electrically connected to the fan-out wiring 11, or at least two chip terminals 20 are electrically connected to one fan-out wiring 11 through a resolution switch.

[0047] In this embodiment, the display panel 1 may be an LCD panel, an OLED panel, a Mini-LED panel, a Micro-LED panel, etc.

[0048] In this embodiment, if Figure 1 As shown, the display panel 1 includes a display area AA and a non-display area NA arranged outside the display area AA, and the display area AA is used to display images. The display area AA is provided with a plurality of sub-pixels 16, and the sub-pixels 16 may include red sub-pixels, green sub-pixels, and blue sub-pixels, thereby realizing color display.

[0049] The non-display area NA may include a binding area NA1 and a fan-out area NA2. The non-display area NA may also be provided with a driving circuit, such as a gate driving circuit, which may be provided on opposite sides of the display area AA. The binding area NA1 and the fan-out area NA2 may be provided on the other side of the display area AA.

[0050] like Figures 1 to 3b As shown, the fan-out area is arranged between the binding area NA1 and the display area AA, the binding area NA1 is provided with a plurality of binding terminals 10, and a fan-out trace 11 is connected to a binding terminal 10. The binding terminal 10 is used to bind and connect with the chip terminal 20 of the driving chip 2. The fan-out trace 11 is arranged in the fan-out area NA2.

[0051] In this embodiment, the binding terminal 10 may be a bare conductive material, and the chip terminal 20 may also be a bare conductive material. The conductive material may be copper, gold, etc., but is not limited thereto.

[0052] The binding terminal 10 is bound and connected to the chip terminal 20. Specifically, an anisotropic conductive adhesive may be provided between the binding terminal 10 and the chip terminal 20, and a plurality of conductive particles are provided in the anisotropic conductive adhesive, and the conductive particles can realize the electrical connection between the binding terminal 10 and the chip terminal 20. One binding terminal 10 is electrically connected to one chip terminal 20. The driving signal output by the chip terminal 20 can be transmitted to the fan-out trace 11 through the binding terminal 10.

[0053] The driving signal may be a data signal, etc. When the driving signal is a data signal, one end of the fan-out wiring 11 away from the binding terminal 10 may be electrically connected to the data line 15 of the display panel 1 , thereby inputting the data signal to the data line 15 .

[0054] In this embodiment, the driver chip 2 is arranged corresponding to the binding area NA1. The number of driver chips 2 can be one or more. One driver chip 2 can be arranged corresponding to multiple fan-out traces 11. The number of chip terminals 20 of one driver chip 2 is greater than the number of fan-out traces 11 electrically connected to the same driver chip 2.

[0055] When the plurality of chip terminals 20 located in the middle area B1 of the driver chip 2 are electrically connected to the corresponding fan-out traces 11, and the plurality of chip terminals 20 located in the edge area B2 of the driver chip 2 are not electrically connected to the fan-out traces 11, the chip terminals 20 in the middle area B1 of the driver chip 2 are used to transmit the driving signal, and the plurality of chip terminals 20 in the edge area B2 of the driver chip 2 are not used to transmit the rotation signal. Through the above arrangement, the driver chip 2 applicable to the display panel 1 with high resolution can be applied to the display panel 1 with low resolution.

[0056] When at least two chip terminals 20 are electrically connected to a fan-out trace 11 through a resolution switch, at least two chip terminals 20 can be electrically connected to the fan-out trace 11 through the resolution switch to provide a driving signal for the fan-out trace 11. The resolution switch can be a conductive trace, a transistor, etc. Through the above configuration, the driver chip 2 applicable to a high-resolution display panel 1 can be applied to a low-resolution display panel 1.

[0057] It should be noted that the resolutions of high resolution and low resolution are relative, that is, the resolution of the display panel 1 with high resolution is greater than the resolution of the display panel 1 with low resolution. For example, the high resolution may be FHD (Full High Definition) or above, and the low resolution may be HD (High Definition) or below.

[0058] In this embodiment, the display device includes a flexible circuit board 41 and a printed circuit board 42. One end of the flexible circuit board 41 is bound and connected to the display panel 1, and the other end is bound and connected to the printed circuit board 42. The printed circuit board 42 is provided with a plurality of components, including capacitors, resistors, timing controllers, etc. The flexible circuit board 41 is provided with a plurality of traces, and the flexible circuit board 41 is used to realize the transmission of signals on the display panel 1 and the printed circuit board 42.

[0059] In this embodiment, the flexible circuit board 41 is in a flattened state, that is, the flexible circuit board 41 is not bent to the back of the display panel 1. Optionally, the display panel 1 includes a support frame 43, the support frame 43 can be fixedly connected to the display panel 1, the printed circuit board 42 can be detachably connected to the support frame 43, and the support frame 43 is used to support and fix the printed circuit board 42.

[0060] Since the number of components on the printed circuit board 42 corresponding to the driver chip 2 for the high-resolution display panel 1 is small, the width of the printed circuit board 42 can be reduced, thereby achieving a narrow frame effect for the low-resolution display panel 1. The width of the printed circuit board 42 refers to the size of the printed circuit board 42 in the second direction D2.

[0061] In the display device of the present application, if Figures 1 to 3cAs shown, the display panel 1 includes a plurality of data lines 15 arranged in the display area AA, the plurality of data lines 15 are arranged along a first direction D1, the chip terminals 20 are arranged in at least two rows, the plurality of chip terminals 20 in each row are arranged along the first direction D1, and the chip terminals 20 in two adjacent rows are staggered.

[0062] In this embodiment, the display area AA is provided with a plurality of data lines 15, which are arranged along the first direction D1 and extend along the second direction D2. A data line 15 can be connected to a plurality of sub-pixels 16 in a column, thereby providing data signals for the sub-pixels 16 in a column.

[0063] When there are multiple driving chips 2 , the multiple driving chips 2 may be arranged along the first direction D1 .

[0064] The display area AA may also be provided with a plurality of scan lines (not shown in the figure), the scan lines extending along the first direction D1 and arranged along the second direction D2. One scan line may correspond to a row of a plurality of sub-pixels 16, and one end of the scan line close to the non-display area NA may be connected to a gate drive circuit, which is used to provide a scan signal for the scan line.

[0065] In this embodiment, if Figure 2 As shown, the chip terminals 20 can be arranged in at least two rows, the chip terminals 20 in each row can be distributed along the first direction D1, and the chip terminals 20 in two rows can be distributed along the second direction D2. Through the above arrangement, the number of chip terminals 20 can be increased without increasing the size of the driver chip 2 in the first direction D1.

[0066] Two adjacent rows of chip terminals 20 are staggered. That is, in two adjacent rows of chip terminals 20, the center of a chip terminal 20 in one row can be arranged corresponding to the gap between two adjacent chip terminals 20 in another row, so as to facilitate the connection of the fan-out traces 11 with the chip terminals 20 in the two rows.

[0067] In the first display device of the present application, Figure 3c As shown, the binding terminal 10 includes a plurality of first terminals 12 and a plurality of fourth terminals 13, and the chip terminal 20 includes a plurality of second terminals 21 and a plurality of third terminals 22. A third terminal 22 is bound and connected to a fourth terminal 13, and a second terminal 21 is bound and connected to a first terminal 12. The second terminal 21 is located in the middle area B1 of the driver chip 2, and the third terminal 22 is located in the edge area B2 of the driver chip 2.

[0068] In this embodiment, the driving chip 2 includes a middle area B1 and edge areas B2 disposed at two ends of the middle area B1 , and the middle area B1 is disposed adjacent to the edge area B2 .

[0069] The second terminal 21 may be disposed in the middle region B1, and the second terminal 21 is electrically connected to the fan-out trace 11. Specifically, the second terminal 21 may be bound and connected to the first terminal 12. The third terminal 22 is disposed in the edge region B2, and the third terminal 22 may not be connected to any fan-out trace 11, that is, the third terminal 22 may be in an idle state, that is, not used to input a driving signal for the data line 15.

[0070] Optionally, the display panel 1 includes a fourth terminal 13, and the third terminal 22 is bound and connected to the fourth terminal 13. Although the third terminal 22 is not connected to the fan-out trace 11, by binding the third terminal 22 to the fourth terminal 13, the chip terminal 20 slightly protrudes from the surface of the driver chip 2, and the chip terminal 20 is subjected to pressure during the binding process. As a result, the edge area B2 and the middle area B1 of the driver chip 2 are subjected to uniform force during the binding process, reducing the risk of cracking of the driver chip 2 due to uneven force during the binding process.

[0071] In this embodiment, except for the connection state with the fan-out trace 11 , the shapes and distributions of the second terminal 21 and the third terminal 22 may be the same or different.

[0072] like Figure 6 As shown, it is a comparative example provided by the present application, in which the second terminal 21 is located at the edge area B2 of the driver chip 2, and the third terminal 22 is located at the middle area B1 of the driver chip 2. At this time, in the first direction D1, the driver chip 2 includes output channels n+1 output channels, which are numbered S0 to Sn respectively. Figure 6 The horizontal axis corresponds to output channels with different numbers, the left vertical axis corresponds to the impedance of the fan-out trace 11, and the right vertical axis corresponds to the length of the fan-out trace 11. The dotted line is the curve of the relationship between the output channel and the length of the driver chip, and the solid line is the curve of the relationship between the output channel and the impedance of the driver chip. At the corresponding position from S40 to S50, the impedance of the fan-out trace 11 suddenly changes to form a bulge, that is, the impedance of the driver chip 2 has a large sudden change, and the impedance at the sudden change can reach 170 ohms. The impedance difference of the fan-out trace 11 is too large, which can easily lead to uniformity problems in the brightness of the display panel 1, that is, the brightness of the display panel is inconsistent at the place where the impedance difference is too large, and it appears as a split screen.

[0073] like Figure 7 As shown, in the first display device of the present application, the second terminal 21 is located in the middle area B1 of the driver chip 2, and the third terminal 22 is located in the edge area B2 of the driver chip 2. Thus, the impedance of the fan-out wiring can be changed linearly without sudden impedance changes, that is, in the area from S0 to Sn, the curve is "V" shaped, and the bottom of the "V" shape does not suddenly increase the impedance, that is, at the corresponding position from S40 to S50, the impedance of the fan-out wiring 11 has no sudden change, thereby improving the brightness uniformity problem in the comparative example and eliminating the split screen.

[0074] In the second display device of the present application, Figures 4a to 4f As shown, the binding terminal 10 includes multiple first terminals 12 and multiple fourth terminals 13, the chip terminal 20 includes multiple second terminals 21 and multiple third terminals 22, a third terminal 22 is bound and connected to a fourth terminal 13, a second terminal 21 is bound and connected to a first terminal 12, and the display panel 1 includes multiple connecting wires 14, one end of a connecting wire 14 is electrically connected to a fan-out wire 11, and the other end is electrically connected to a fourth terminal 13.

[0075] In this embodiment, if Figure 4d and Figure 4f As shown, the second terminals 21 may be distributed in the middle area B1 and the edge area B2 of the driver chip 2 , and the third terminals 22 may also be distributed in the middle area B1 and the edge area B2 of the driver chip 2 .

[0076] The first terminal 12 is bound and connected to the second terminal 21 , and the orthographic projection of the first terminal 12 on the display surface of the display panel 1 overlaps with the orthographic projection of the second terminal 21 on the display surface of the display panel 1 .

[0077] The third terminal 22 is bound and connected to the fourth terminal 13 , and the orthographic projection of the fourth terminal 13 on the display surface of the display panel 1 overlaps with the orthographic projection of the third terminal 22 on the display surface of the display panel 1 .

[0078] like Figure 4c and Figure 4e As shown, the connection line 14 is arranged in the non-display area NA of the display panel 1. Optionally, the connection line 14 can be arranged in the binding area NA1. One end of the connection line 14 is connected to a fan-out line 11, and the other end is electrically connected to a fourth terminal 13. That is to say, the first terminal 12 can be connected to the fourth terminal 13 through the connection line 14 and the fan-out line 11.

[0079] In this embodiment, the second terminal 21 and the third terminal 22 can both be used to output driving signals, so that the first terminal 12 and the fourth terminal 13 simultaneously input driving signals to the same fan-out trace 11, which not only enhances the driving thrust of the driving chip 2 but also reduces the contact impedance between the terminals.

[0080] In the third display device of the present application, Figure 5a to Figure 5f As shown, the third display device is different from the second display device in that the first terminal 12 and the fourth terminal 13 are not connected by a lead, and the second terminal 21 and the third terminal 22 can be connected by a switch device 23. The driving chip 2 includes a plurality of switch devices 23 arranged between a second terminal 21 and a third terminal 22, and the switch device 23 is configured to make the second terminal 21 and the third terminal 22 conductive or disconnected.

[0081] In this embodiment, if Figure 5d and Figure 5f As shown, a switch device 23 may be provided between the second terminal 21 and the third terminal 22, and the switch device 23 may be a transistor or the like. The switch device 23 may realize the conduction or disconnection of the second terminal 21 and the third terminal 22. Specifically, when the display panel 1 is a low-resolution display panel 1, the second terminal 21 and the third terminal 22 may be turned on, so that the second terminal 21 and the third terminal 22 simultaneously input a driving signal to the same fan-out wiring 11, which both enhances the driving thrust of the driving chip 2 and reduces the contact impedance between the terminals.

[0082] When the display panel 1 is a high-resolution display panel 1 , the second terminal 21 and the third terminal 22 can be disconnected, so that the second terminal 21 and the third terminal 22 respectively input drive signals to different fan-out wirings 11 , thereby increasing the number of output channels of the drive chip 2 .

[0083] In all display devices of this application, Figures 3a to 5b As shown, a plurality of fan-out traces 11 are connected to a plurality of second terminals 21 in the same row, or a plurality of fan-out traces 11 are connected to a plurality of second terminals 21 in different rows.

[0084] In this embodiment, the fan-out traces 11 may be connected to the second terminals 21 in the same row, or connected to the second terminals 21 in different rows.

[0085] like Figure 3b , shows the situation where the fan-out traces 11 are connected to the second terminals 21 of different rows. Figures 4a to 5b , showing a situation where the fan-out trace 11 is connected to the second terminal 21 in the same row.

[0086] In the second display device of the present application, Figure 4a and Figure 4b As shown, the plurality of fan-out traces 11 are connected to the plurality of first terminals 12 in the same row, the connection trace 14 is connected to the plurality of fourth terminals 13 in the same row, or the connection trace 14 is connected to the plurality of fourth terminals 13 in another row.

[0087] In this embodiment, if Figure 4a and Figure 4c As shown, the first terminal 12 is arranged in the second row, and the fourth terminal 13 is arranged in the first row. The fan-out trace 11 is connected to the first terminal 12, one end of the connecting trace 14 can be connected to the fan-out trace 11, thereby being electrically connected to the first terminal 12, and the other end of the connecting trace 14 can be connected to the fourth terminal 13.

[0088] In this embodiment, if Figure 4b and Figure 4eAs shown, the first terminal 12 is arranged in the second row, and the fourth terminal 13 is arranged in the second row. The first terminal 12 and the fourth terminal 13 can be arranged alternately. The fan-out trace 11 is connected to the first terminal 12, one end of the connecting trace 14 can be connected to the fan-out trace 11, thereby being electrically connected to the first terminal 12, and the other end of the connecting trace 14 can be connected to the fourth terminal 13.

[0089] In this embodiment, the second terminal 21 and the third terminal 22 may be insulated from each other, and the second terminal 21 and the third terminal 22 may be used to output driving signals respectively.

[0090] In the second display device of the present application, Figure 4a and Figure 4b As shown, the number of fourth terminals 13 connected to a first terminal 12 corresponding to the edge area B2 of the driver chip 2 is greater than the number of fourth terminals 13 connected to a first terminal 12 corresponding to the middle area B1 of the driver chip 2. That is to say, the number of fourth terminals 13 electrically connected to the fan-out wiring 11 corresponding to the edge area B2 of the driver chip 2 is greater than the number of fourth terminals 13 electrically connected to the fan-out wiring 11 corresponding to the middle area B1 of the driver chip 2, thereby enhancing the driving thrust of the edge area B2 of the driver chip 2 and reducing the contact impedance between the terminals in the edge area B2.

[0091] It should be noted that, in the fan-out routing 11 corresponding to the same driver chip 2, since the lengths of the fan-out routing 11 corresponding to different regions of the driver chip 2 are different, the impedance of the fan-out routing 11 close to the edge region B2 is greater than the impedance of the fan-out routing 11 close to the middle region B1. Therefore, when the number of fourth terminals 13 electrically connected to the fan-out routing 11 corresponding to the edge region B2 is greater than the number of fourth terminals 13 electrically connected to the fan-out routing 11 corresponding to the middle region B1, the contact impedance between the terminals in the edge region B2 can be reduced, thereby reducing the impedance difference between the fan-out routing 11 corresponding to the edge region B2 and the fan-out routing 11 corresponding to the middle region B1, and improving the problem of insufficient uniformity of the display screen caused by the impedance difference of the fan-out routing 11 of the display panel 1. The problem of insufficient uniformity can be manifested as different brightness of the display screen and the phenomenon of screen splitting.

[0092] In the second display device of the present application, Figure 4a and Figure 4b As shown, the number of the fourth terminals 13 corresponding to one fan-out trace 11 gradually increases in the direction from the edge area B2 of the driver chip 2 to the middle area B1. That is to say, in the driver chip 2, the closer to the edge area B2 of the driver chip 2, the more the fourth terminals 13 electrically connected to the same fan-out trace 11, thereby further improving the problem of insufficient picture uniformity.

[0093] In the third display device of the present application, Figure 5a and Figure 5b As shown, multiple fan-out traces 11 are connected to multiple first terminals 12 in the same row, and the switch device 23 is arranged between the second terminal 21 and the third terminal 22 in the same row, or the switch device 23 is arranged between the second terminal 21 and the third terminal 22 in different rows.

[0094] In this embodiment, if Figure 5a and Figure 5d As shown, the second terminal 21 and the third terminal 22 can be arranged in the same row. For example, the second terminal 21 is arranged in the second row, and the third terminal 22 is arranged in the second row. One end of the switch device 23 can be connected to the second terminal 21, and the other end can be connected to the third terminal 22.

[0095] In this embodiment, if Figure 5b and Figure 5f As shown, the second terminal 21 and the third terminal 22 can be arranged in different rows. For example, the second terminal 21 is arranged in the second row, and the third terminal 22 is arranged in the first row. One end of the switch device 23 can be connected to the second terminal 21, and the other end can be connected to the third terminal 22.

[0096] In the display device of the present application, if Figure 5a and Figure 5b As shown, the number of third terminals 22 connected to a second terminal 21 corresponding to the edge area B2 of the driver chip 2 is greater than the number of third terminals 22 connected to a second terminal 21 corresponding to the middle area B1 of the driver chip 2. That is to say, the number of third terminals 22 electrically connected to the fan-out traces 11 corresponding to the edge area B2 of the driver chip 2 is greater than the number of third terminals 22 electrically connected to the fan-out traces 11 corresponding to the middle area B1 of the driver chip 2, thereby enhancing the driving thrust of the edge area B2 of the driver chip 2 and reducing the contact impedance between the terminals in the edge area B2.

[0097] When the number of third terminals 22 electrically connected to the fan-out routing 11 corresponding to the edge area B2 is greater than the number of third terminals 22 electrically connected to the fan-out routing 11 corresponding to the middle area B1, the contact impedance between the terminals in the edge area B2 can be reduced, thereby reducing the impedance difference between the fan-out routing 11 corresponding to the edge area B2 and the fan-out routing 11 corresponding to the middle area B1, thereby improving the problem of insufficient display picture uniformity of the display panel 1 due to the impedance difference of the fan-out routing 11.

[0098] In the display device of the present application, if Figure 5a and Figure 5bAs shown, the number of third terminals 22 corresponding to a fan-out trace 11 gradually decreases in the direction from the middle area B1 to the edge area B2 of the driver chip 2. That is to say, in the driver chip 2, the closer to the edge area B2 of the driver chip 2, the more third terminals 22 electrically connected to the same fan-out trace 11, thereby further improving the problem of insufficient picture uniformity.

[0099] In the display device of the present application, Figure 2 As shown, the driver chip 2 includes a control terminal 24, which is configured to make the third terminal 22 in a first state or a second state; in the first state, multiple third terminals 22 all output drive signals; in the second state, none of the third terminals 22 outputs drive signals.

[0100] In this embodiment, in the first state, the driver chip 2 can be applied to a high-resolution display panel 1; in the second state, the driver chip 2 can be applied to a low-resolution display panel 1. Through the above configuration, the compatibility of the driver chip 2 can be achieved.

[0101] In the display device of the present application, Figures 1 to 5b As shown, the display device includes a timing controller 3, which is connected to the driving chip 2. The timing controller 3 is configured to make the third terminal 22 in a first state or a second state; in the first state, multiple third terminals 22 all output driving signals; in the second state, none of the third terminals 22 outputs driving signals.

[0102] In this embodiment, the timing controller 3 may be connected to the driving chip 2 to control the driving chip 2 .

[0103] In this embodiment, in the first state, the driver chip 2 can be applied to a high-resolution display panel 1; in the second state, the driver chip 2 can be applied to a low-resolution display panel 1. Through the above configuration, the compatibility of the driver chip 2 can be achieved.

[0104] In the display device of the present application, in the first direction D1, the spacing p1 between two adjacent second terminals 21 is the same. The spacing p1 between two adjacent second terminals 21 may be the size between the centers of two adjacent second terminals 21. Through the above arrangement, the impedance of two adjacent fan-out traces 11 may change linearly, thereby making the screen brightness transition of the display panel 1 smooth and reducing the degree of brightness unevenness.

[0105] The display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or the like.

[0106] 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.

[0107] The display device provided in the embodiments of the present application is introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. 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 application.

Claims

1. A display device, characterized in that: include: A display panel (1), comprising a display area (AA) and a non-display area (NA) located on one side of the display area (AA), the non-display area (NA) comprising a fan-out area (NA2) and a binding area (NA1), the display panel (1) comprising a plurality of fan-out wirings (11) located in the fan-out area (NA2) and a plurality of binding terminals (10) located in the binding area (NA1), one of the fan-out wirings (11) being correspondingly connected to at least one of the binding terminals (10); At least one driving chip (2) comprises a plurality of chip terminals (20) for transmitting driving signals, wherein one of the chip terminals (20) is bound and connected to one of the binding terminals (10); Wherein, when the driver chip is applied to a low-resolution display panel, the plurality of chip terminals (20) located in the middle area of ​​the driver chip (2) are electrically connected to the corresponding fan-out wiring (11), and the plurality of chip terminals (20) located in the edge area are not electrically connected to the fan-out wiring (11), or at least two of the chip terminals (20) are electrically connected to one of the fan-out wirings (11) via a resolution switch.

2. The display device according to claim 1, characterized in that The binding terminal (10) comprises a plurality of first terminals (12) and a plurality of fourth terminals (13); the chip terminal (20) comprises a plurality of second terminals (21) and a plurality of third terminals (22); a second terminal (21) is bound and connected to a first terminal (12); a third terminal (22) is bound and connected to a fourth terminal (13); the second terminal (21) is located in a middle area of ​​the driver chip (2); the third terminal (22) is located in an edge area of ​​the driver chip (2); the second terminal (21) is electrically connected to the fan-out wiring (11); and the third terminal (22) is configured not to be electrically connected to the fan-out wiring (11).

3. The display device according to claim 1, characterized in that The binding terminal (10) comprises a plurality of first terminals (12) and a plurality of fourth terminals (13); the chip terminal (20) comprises a plurality of second terminals (21) and a plurality of third terminals (22); a second terminal (21) is bound and connected to a first terminal (12); a third terminal (22) is bound and connected to a fourth terminal (13); the resolution switch comprises a plurality of connecting wires (14) arranged on the display panel (1); one end of a connecting wire (14) is electrically connected to a fan-out wire (11); and the other end is electrically connected to a fourth terminal (13).

4. The display device according to claim 1, characterized in that The binding terminal (10) comprises a plurality of first terminals (12) and a plurality of fourth terminals (13); the chip terminal (20) comprises a plurality of second terminals (21) and a plurality of third terminals (22); a second terminal (21) is bound and connected to a first terminal (12); a third terminal (22) is bound and connected to a fourth terminal (13); the resolution switch comprises a plurality of switch devices (23) arranged on the driving chip (2); a switch device (23) is arranged between a second terminal (21) and a third terminal (22); and the switch device (23) is configured to connect or disconnect the second terminal (21) and the third terminal (22).

5. The display device according to any one of claims 2 to 4, characterized in that: A plurality of the fan-out wirings (11) are connected to a plurality of the second terminals (21) in the same row, or the fan-out wirings (11) are connected to a plurality of the second terminals (21) in different rows.

6. The display device according to claim 5, characterized in that: A plurality of the fan-out lines (11) are connected to a plurality of the first terminals (12) in the same row, a plurality of the connecting lines (14) are connected to a plurality of the fourth terminals (13) in the same row as the first terminals (12), or the connecting lines (14) are connected to a plurality of the fourth terminals (13) in a different row from the first terminals (12).

7. The display device according to claim 6, characterized in that: The number of the fourth terminals (13) connected to a first terminal (12) corresponding to an edge area of ​​the driver chip (2) is greater than the number of the fourth terminals (13) connected to a first terminal (12) corresponding to a middle area of ​​the driver chip (2).

8. The display device according to claim 7, characterized in that: In a direction from the edge area of ​​the driver chip (2) to the middle area, the number of the fourth terminals (13) corresponding to a fan-out wiring (11) gradually increases.

9. The display device according to claim 5, characterized in that: A plurality of the fan-out lines (11) are connected to a plurality of the first terminals (12) in the same row, the switch device (23) is arranged between the second terminal (21) and the third terminal (22) in the same row, or the switch device (23) is arranged between the second terminal (21) and the third terminal (22) in different rows.

10. The display device according to claim 9, characterized in that: The number of the third terminals (22) connected to a second terminal (21) corresponding to an edge area of ​​the driver chip (2) is greater than the number of the third terminals (22) connected to a second terminal (21) corresponding to a middle area of ​​the driver chip (2).

11. The display device according to claim 10, characterized in that: In a direction from the middle area of ​​the driver chip (2) to the edge area, the number of the third terminals (22) corresponding to a fan-out wiring (11) gradually decreases.

12. The display device according to any one of claims 2 to 4, characterized in that: The driving chip (2) comprises a control terminal (24), wherein the control terminal (24) is configured to make the third terminal (22) present in a first state or a second state; in the first state, a plurality of the third terminals (22) all output driving signals; and in the second state, the third terminals (22) do not output driving signals.

13. The display device according to any one of claims 2 to 4, characterized in that: The display device comprises a timing controller (3), the timing controller (3) being connected to the driving chip (2), and the timing controller (3) being configured to make the third terminal (22) present a first state or a second state; in the first state, a plurality of the third terminals (22) all output driving signals; in the second state, the third terminals (22) do not output driving signals.

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