CN110288911B

CN110288911B - Display driving chip, display module and display device

Info

Publication number: CN110288911B
Application number: CN201910562787.3A
Authority: CN
Inventors: 陈相逸; 刘蕊; 谷其兵; 孙伟; 陈明; 孟晨; 郝可歆; 杨燕
Original assignee: BOE Technology Group Co Ltd; Beijing BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Optoelectronics Technology Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2021-11-19
Anticipated expiration: 2039-06-26
Also published as: CN110288911A

Abstract

The invention provides a display driving chip, a display module and a display device, wherein the display driving chip comprises: a chip body; first pins disposed on a first surface of the chip body; a second pin disposed on the first surface; and the connecting wire is arranged on the first surface and is used for electrically connecting the first pin and the second pin. From this, when being used for display module assembly with this display driver chip, can connect GOA circuit and FPC respectively through first pin and second pin to make the GOA signal pass through from display driver chip is inside, need not walk around the GOA signal line from display driver chip below and send into the GOA circuit again, make full use of shows the space in the driver chip, reduced greatly and walked the line area, and then can realize narrower frame, provide better user experience.

Description

Display driving chip, display module and display device

Technical Field

The invention relates to the technical field of display, in particular to a display driving chip, a display module and a display device.

Background

With the development of display panel manufacturing industry, a narrow-frame full-screen product becomes a mainstream product at present, and for a large-size GOA (gate on array) product, a GOA signal sent out through a Flexible Printed Circuit (FPC) can only bypass the path from below a display driver chip (Source Drive) and be sent into a GOA circuit (a structural schematic diagram refers to fig. 1, where 100 is a substrate, 200 is a display driver chip, and 300 is a GOA signal line).

Therefore, the current narrow-frame display module still needs to be improved.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a display driving chip, a display module and a display device capable of effectively implementing a narrow-bezel display module.

In one aspect of the present invention, a display driving chip is provided. According to an embodiment of the present invention, the display driving chip includes: a chip body; first pins disposed on a first surface of the chip body; a second pin disposed on the first surface; and the connecting wire is arranged on the first surface and is used for electrically connecting the first pin and the second pin. From this, when being used for display module assembly with this display driver chip, can connect GOA circuit and FPC respectively through first pin and second pin to make the GOA signal pass through from display driver chip is inside, need not walk around the GOA signal line from display driver chip below and send into the GOA circuit again, make full use of shows the space in the driver chip, reduced greatly and walked the line area, and then can realize narrower frame, provide better user experience.

According to the embodiment of the invention, the first pin and the second pin are respectively arranged at the edges of two opposite short sides of the chip body.

According to the embodiment of the invention, the first pin is arranged at the edge of one short side of the chip body, and the second pin is arranged at the edge of one long side of the chip body.

According to the embodiment of the invention, the first pin and the second pin are respectively arranged at the edges of two opposite long sides of the chip body.

According to an embodiment of the present invention, a switch member for controlling the connection line to be turned on and off is provided in the connection line.

According to an embodiment of the invention, the switching means is a MOS transistor.

According to an embodiment of the present invention, the number of the first pins, the number of the second pins, and the number of the connecting lines are all plural, and each connecting line is used for electrically connecting one first pin and one second pin.

In another aspect of the invention, a display module is provided. According to an embodiment of the present invention, the display module includes: the display device comprises a substrate, a display screen and a display screen, wherein a window area and a frame area surrounding the window area are formed in the substrate; the GOA circuit is arranged on the second surface of the substrate and is positioned in the window area; a flexible circuit board disposed at an edge of the first edge of the substrate; the display driving chip is arranged on the second surface and is positioned in the frame area; the first GOA signal line is provided with a first connecting end and a second connecting end which are opposite, the first connecting end is electrically connected with the flexible circuit board, and the second connecting end is electrically connected with the first pin; and the second GOA signal line is provided with a third connecting end and a fourth connecting end which are opposite, the third connecting end is electrically connected with the second pin, and the fourth connecting end is electrically connected with the GOA circuit. In this display module assembly, the GOA signal line passes through the connecting wire among the display driver chip and carries the signal to the GOA circuit, need not set up the GOA signal line in addition on the second surface of base plate (need not set up the GOA signal line in the one side that the drive display chip is close to the first side of base plate promptly), has effectively reduced the area that the line took of walking for the width in frame district can accomplish more narrowly, and then provides better user experience for the user.

According to the embodiment of the invention, the long side of the display driving chip extends along the first side, and the short side of the display driving chip is perpendicular to the first side.

According to the embodiment of the invention, the width of the frame area provided with the display driving chip is less than 5 mm.

In yet another aspect of the present invention, a display device is provided. According to an embodiment of the invention, the display device comprises the display module. This display module assembly can realize narrower frame, and the screen accounts for than higher, and user experience is better.

Drawings

Fig. 1 is a schematic structural diagram of a display module in the related art.

Fig. 2 is a schematic structural diagram of a display driver chip according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a display driver chip according to another embodiment of the invention.

Fig. 4 is a schematic structural diagram of a display driver chip according to another embodiment of the invention.

Fig. 5 is a schematic structural diagram of a display driver chip according to another embodiment of the invention.

Fig. 6 is a schematic structural diagram of a display driver chip according to another embodiment of the invention.

Fig. 7 is a schematic structural diagram of a display driver chip according to another embodiment of the invention.

Fig. 8 is a schematic structural diagram of a display module according to an embodiment of the invention.

Detailed Description

The following describes embodiments of the present invention in detail. The following examples are illustrative only and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.

In one aspect of the present invention, a display driving chip is provided. According to an embodiment of the present invention, referring to fig. 2, the display driving chip includes: a chip body 1; the first pins 2 are arranged on the first surface of the chip body 1; second leads 3, the second leads 3 being disposed on the first surface; and the connecting wire 4 is arranged on the first surface and is used for electrically connecting the first pin 2 and the second pin 3. From this, when being used for display module assembly with this display driver chip, can connect GOA circuit and FPC respectively through first pin and second pin, thereby make the GOA signal can follow display driver chip inside and pass through, need not walk around the GOA signal line from display driver chip below and send into the GOA circuit again, make full use of display driver chip's pin and space wherein, reduced greatly and walked the line area, and then can realize narrower frame, provide better user experience. In addition, when the display driver chip is not used as a GOA signal path, the first pin and the second pin on the display driver chip can also be used as input pins of other signals (such as AVDD, GND and the like), and specifically, two pins electrically connected with the connecting line can be defined as the same input, so that not only is the multiplexing of the pins realized, but also the display driver chip can be compatible with more display screens (panels), and more pins with the same definition can be used for signal input, so that the input impedance can be reduced, and the power consumption is lower.

According to an embodiment of the present invention, the specific number of the first pins, the second pins and the connecting lines is not particularly limited, and may be one, two, three, four or more, respectively, and the specific number may be determined according to the number of the GOA signals. In some embodiments, referring to fig. 2, the number of the first pins 2, the second pins 3 and the connecting lines 4 is one; in other embodiments, referring to fig. 3, the number of the first pins 2, the second pins 3 and the connecting wires 4 is multiple, and each connecting wire 4 is used for electrically connecting one first pin 2 and one second pin 3.

According to the embodiment of the invention, the specific arrangement positions of the first pin and the second pin on the chip body can be flexibly selected according to requirements, as long as the GOA signal can be conducted inside the display driving chip. In some embodiments, referring to fig. 2 and 3, the first lead 2 and the second lead 3 are respectively disposed at edges of two opposite short sides of the chip body 1. In other embodiments, referring to fig. 4, the first pin 2 is disposed at an edge of a short side of the chip body 1, and the second pin 3 is disposed at an edge of a long side of the chip body 1. In other embodiments, referring to fig. 5, the first leads 2 and the second leads 3 are respectively disposed at edges of two opposite long sides of the chip body 1. From this, this display driver chip can be applicable to multiple display module assembly, and application scope is more extensive.

According to the embodiment of the present invention, the distribution manner of the first pins and the second pins on the chip body is not particularly limited, referring to fig. 6, taking an example that the first pins 2 and the second pins 3 are respectively disposed at the edges of two opposite short sides of the chip body as an example, the plurality of first pins 2 and the plurality of second pins 3 may be respectively distributed in rows along the direction of the short sides, and each short side may be disposed with one, two (referring to fig. 6) or more rows of first pins or second pins, and each connecting line only needs to be capable of electrically connecting one first pin 2 and one second pin 3, the specific routing manner may be flexibly set according to the specific structure on the display driving chip, specifically, the routing on the display driving chip may be reasonably set, and the connecting line may also be disposed in an empty region (i.e. a region where no routing is originally disposed) on the original display driving chip, therefore, the area of the display driving chip can not be increased, and the effect of realizing a narrow frame is more facilitated.

Those skilled in the art can understand that the first pin and the second pin electrically connected through the connecting line may be only part of pins on the display driver chip, and the display driver chip may further be provided with pins for other purposes, such as pins for GND signal, VDDA signal, etc., which may be all arranged according to the conventional technology, and will not be described in detail herein.

According to an embodiment of the present invention, referring to fig. 7, a switch component 5 may be further disposed in the connection line 4, and the switch component 5 is configured to control the connection line 4 to be turned on and off. Therefore, the path formed between the first pin and the second pin can be flexibly utilized as required or the first pin and the second pin can be disconnected, namely, when a GOA signal path is required to be formed, the switch part can be closed, the connecting line can be conducted, the number of the connecting lines closed by the switch part can be flexibly selected according to the number of the GOA signal lines, when the GOA signal path is not required to be formed, the switch part can be disconnected, the first pin and the second pin can work as two independent pins, more pins can be reserved for use as other signals while the GOA signal path is flexibly realized, and further the display driving chip can be compatible with more display screens and use modes, and the application range is wider.

According to the embodiment of the invention, the specific type of the switch component can be selected according to actual needs, and specifically, the switch component can be a switch component commonly used in the display field. In some embodiments, the switching element may be a MOS transistor. Therefore, the structure is simple, the preparation process is mature, the cost is lower, the preparation yield is high, and the industrial production is easy to realize.

In another aspect of the invention, a display module is provided. According to an embodiment of the present invention, referring to fig. 8, the display module includes: a substrate 100 on which a window region 110 and a frame region 120 surrounding the window region are divided; a GOA circuit 500, wherein the GOA circuit 500 is disposed on the second surface of the substrate 100 and located in the window region 110; a flexible circuit board 400, the flexible circuit board 400 being disposed at an edge of the first side 111 of the substrate 100; the display driving chip 200 is disposed on the second surface, and the display driving chip 200 is located in the frame region 120; a first GOA signal line 310, wherein the first GOA signal line 310 has a first connection end 311 and a second connection end 312 which are opposite to each other, the first connection end 311 is electrically connected to the flexible circuit board 400, and the second connection end 312 is electrically connected to the first pin 2; a second GOA signal line 320, wherein the second GOA signal line 320 has a third connection 321 and a fourth connection 322 opposite to each other, the third connection 321 is electrically connected to the second pin 3, and the fourth connection 322 is electrically connected to the GOA circuit 500. In this display module assembly, the GOA signal line passes through the connecting wire among the display driver chip and carries the signal to the GOA circuit, need not set up the GOA signal line in addition on the second surface of base plate (need not set up the GOA signal line in the one side that the drive display chip is close to the first side of base plate promptly), has effectively reduced the area that the line took of walking for the width in frame district can accomplish more narrowly, and then provides better user experience for the user.

According to an embodiment of the present invention, referring to fig. 8, a long side of the display driving chip extends along the first side, and a short side of the display driving chip is perpendicular to the first side. The arrangement mode can reduce the width of a frame area at the position where the display driving chip is arranged, and is beneficial to realizing a narrow frame. Further, the difference that combines first pin and second pin is the setting position, can further conveniently walk the line, can reduce the width that shows the frame region on short side one side of drive chip simultaneously, specifically say, the edge that the second pin that figure 4 and 5 show set up a long limit of chip body, can further reduce the width that the chip body is close to the frame region on short side one side of second pin.

According to an embodiment of the present invention, the width W of the frame area where the display driving chip is disposed may be less than 5 mm, for example, 4.9 mm, 4.8 mm, 4.5 mm, 4.2 mm, 4 mm, 3.5 mm, 3 mm, and the like. From this for display module's frame is narrower, and to cell-phone, panel computer etc. the position that shows that driver chip set up frame (the frame towards the below when in-service use promptly) down usually, this display module can make its lower frame obviously narrow down, improves the screen and accounts for the ratio, further approaches real comprehensive screen, effectively improves user experience.

According to the embodiments of the present invention, in addition to the structures and components described above, the display module may further include other structures and components that the conventional display module must have, for example, a driving circuit (such as a thin film transistor and necessary traces), a pixel unit, and the like may be further included on the substrate, and details thereof are not repeated here.

According to the embodiment of the present invention, the specific kind of the display device is not particularly limited, for example, including but not limited to a mobile phone, a tablet computer, a computer monitor, a game machine, a wearable device, a television, and the like. And those skilled in the art can understand that, in addition to the display module described above, the display device may further include structures and components necessary for a conventional display device, and taking a mobile phone as an example, the display device may further include structures and components such as a main board, a battery, a front cover plate, a back cover plate, a camera module, a touch screen, and the like, which are not described one by one herein.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A display driver chip, comprising:

a chip body;

the first pin is arranged on the first surface of the chip body and is electrically connected with the GOA circuit;

the second pin is arranged on the first surface and is electrically connected with the FPC;

and the connecting wire is arranged on the first surface and is used for electrically connecting the first pin and the second pin.

2. The display driving chip of claim 1, wherein the first pin and the second pin are respectively disposed at edges of two opposite short sides of the chip body.

3. The display driver chip of claim 1, wherein the first pin is disposed at an edge of one short side of the chip body, and the second pin is disposed at an edge of one long side of the chip body.

4. The display driving chip of claim 1, wherein the first pin and the second pin are respectively disposed at edges of two opposite long sides of the chip body.

5. The display driver chip according to claim 1, wherein a switch member is provided in the connection line, and the switch member is configured to control on and off of the connection line.

6. The display driver chip of claim 5, wherein the switching component is a MOS transistor.

7. The display driving chip according to any one of claims 1 to 6, wherein the number of the first pins, the number of the second pins, and the number of the connecting lines are all plural, and each connecting line is used for electrically connecting one first pin and one second pin.

8. A display module, comprising:

the display device comprises a substrate, a display screen and a display screen, wherein a window area and a frame area surrounding the window area are formed in the substrate;

the GOA circuit is arranged on the second surface of the substrate and is positioned in the window area;

a flexible circuit board disposed at an edge of the first edge of the substrate;

the display driver chip of any of claims 1-5, disposed on the second surface and in the bezel area;

the first GOA signal line is provided with a first connecting end and a second connecting end which are opposite, the first connecting end is electrically connected with the flexible circuit board, and the second connecting end is electrically connected with the first pin;

and the second GOA signal line is provided with a third connecting end and a fourth connecting end which are opposite, the third connecting end is electrically connected with the second pin, and the fourth connecting end is electrically connected with the GOA circuit.

9. The display module of claim 8, wherein a long side of the display driver chip extends along the first side, and a short side of the display driver chip is perpendicular to the first side.

10. The display module of claim 8, wherein the width of the frame region where the display driving chip is disposed is less than 5 mm.

11. A display device comprising the display module according to any one of claims 8 to 10.