CN210091692U - Display panel and device - Google Patents
Display panel and device Download PDFInfo
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- CN210091692U CN210091692U CN201920516446.8U CN201920516446U CN210091692U CN 210091692 U CN210091692 U CN 210091692U CN 201920516446 U CN201920516446 U CN 201920516446U CN 210091692 U CN210091692 U CN 210091692U
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- display panel
- protection module
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- panel according
- driving chip
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Abstract
The utility model provides a display panel and a device, wherein the display panel comprises a driving chip; the flexible circuit board is used for connecting the driving chip and the circuit board; the flexible circuit board comprises a plurality of output terminals, the output terminals are arranged on two opposite sides of the driving chip, and the output terminals are connected with pins of the driving chip through a plurality of connecting wires; the electrostatic protection module, it includes a plurality of adjusting element, and is a plurality of the adjusting element with at least some connecting wires among many connecting wires correspond, every connecting wire in at least some connecting wires connects one the adjusting element, the electrostatic protection module is used for working as when the absolute value of actual voltage on the connecting wire is greater than when predetermineeing voltage, it is right current value on the connecting wire adjusts to prevent to damage the connecting wire. The utility model discloses a display panel and device can avoid the connecting wire to take place electrostatic breakdown phenomenon to can make display panel normally show.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a show technical field, especially relate to a display panel and device.
[ background of the invention ]
With the development of a full-screen, in order to increase the screen occupation ratio, the width of the lower boundary of the display screen needs to be reduced, as shown in fig. 1, a conventional Chip On Glass (COG) module includes a substrate 10, a display area 11, a driver chip 20 located below the display area 11, and a Flexible Printed Circuit (FPC) 30; the size of the lower frame is composed of the width a of the FPC binding area, the width (WOA area width) b between the flexible circuit board and the FPC, the width c of the driving chip 20 and the width d of the fan-out line of the data line.
However, the bezel size of this display panel structure is relatively large, and the structure shown in fig. 2 appears later. The lower frame size of the display panel in fig. 2 mainly consists of the width d of the fan-out line of the data line and the width c of the driving chip 20, and in conjunction with fig. 3, the output terminal 31 of the flexible circuit board 30 is connected to the pin 21 of the driving chip 20 through the connection line 32. Although the width of the lower frame is reduced by the structure, the length of the connecting line (WOA routing) 32 is long, so that the impedance of the connecting line is high, the connecting line is easy to generate electrostatic breakdown (ESD), a signal source cannot be normally input to the display panel, and the display panel cannot normally display.
Therefore, it is desirable to provide a display panel and a device to solve the problems of the prior art.
[ Utility model ] content
An object of the utility model is to provide a display panel and device can avoid the connecting wire to take place the electrostatic breakdown phenomenon to can make display panel normally show.
In order to solve the above technical problem, the utility model provides a display panel, it includes:
a driving chip;
the flexible circuit board is used for connecting the driving chip and the circuit board; the flexible circuit board comprises a plurality of output terminals, the output terminals are arranged on two opposite sides of the driving chip, and the output terminals are connected with pins of the driving chip through a plurality of connecting wires;
the electrostatic protection module, it includes a plurality of adjusting element, and is a plurality of the adjusting element with at least some connecting wires among many connecting wires correspond, every connecting wire in at least some connecting wires connects one the adjusting element, the electrostatic protection module is used for working as when the absolute value of actual voltage on the connecting wire is greater than when predetermineeing voltage, it is right current value on the connecting wire adjusts to prevent to damage the connecting wire.
The utility model also provides a display device, it includes above-mentioned display panel.
The utility model discloses a display panel and device, including driver chip, flexible circuit board and electrostatic protection module, the flexible circuit board includes a plurality of output terminals, and a plurality of the output terminal sets up the both sides of driver chip, output terminal through many connecting wires with the pin of driver chip is connected; the electrostatic protection module comprises a plurality of adjusting units, the adjusting units correspond to at least one part of connecting lines in the connecting lines, each connecting line in the at least one part of connecting lines is connected with one adjusting unit, and the electrostatic protection module is used for adjusting the current value on the connecting lines to prevent the connecting lines from being damaged when the absolute value of the actual voltage on the connecting lines is greater than the preset voltage; due to the fact that the electrostatic protection module is added, the phenomenon of electrostatic breakdown of the connecting line is effectively avoided, a signal source can be normally input to the display panel, and the display panel can normally display.
[ description of the drawings ]
FIG. 1 is a schematic diagram of a first structure of a conventional display panel;
FIG. 2 is a diagram illustrating a second structure of a conventional display panel;
FIG. 3 is an enlarged view of the area A in FIG. 2;
fig. 4 is a schematic structural diagram of the display panel of the present invention;
FIG. 5 is a first enlarged view of area A of FIG. 4 according to the present invention;
FIG. 6 is a schematic structural diagram of the ESD protection module of FIG. 5;
FIG. 7 is a second enlarged view of area A of FIG. 4 according to the present invention;
fig. 8 is a schematic structural diagram of the electrostatic protection module of the present invention.
Fig. 9 is a circuit diagram of the electrostatic protection module of the present invention.
[ detailed description ] embodiments
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc. refer to directions of the attached drawings only. Accordingly, the directional terms used are used for describing and understanding the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
Referring to fig. 4 to 8, fig. 4 is a schematic structural diagram of a display panel according to the present invention.
As shown in fig. 4 and 5, the present invention further provides a display panel including a display area 11 and a binding area (not shown in the figure), wherein the binding area is located below the display area 11. Wherein the display area 11 includes a plurality of data lines and scan lines. The display panel includes a driving chip 20, a circuit board (not shown), a flexible circuit board 30 and an electrostatic protection module 40, wherein the display panel may further include a substrate 10, and the driving chip 20 and the flexible circuit board (FPC)30 are disposed on the substrate 10.
The driving chip 20 is electrically connected to the display area 11. Such as the driving chip 20, is connected to the data lines of the display area 11. The driving chip 20 includes a plurality of pins 21.
As shown in fig. 4 and 5, the flexible circuit board 30 of the present invention is used for connecting the driving chip 20 and the circuit board, and the flexible circuit board 30 includes: a plurality of output terminals 31, the output terminals 31 corresponding to the connection lines 32. The pin 21 corresponds to the output terminal 31.
Referring to fig. 5, the output terminal 31 is connected to the driving chip 20 through a plurality of connection lines 32. The output terminals 31 in the a region, for example, are connected to the driver chip 20 through six connection lines 32.
As shown in fig. 5, the esd protection module 40 is connected to the connection line 32, and the esd protection module 40 is configured to adjust a current value on the connection line 32 when an absolute value of an actual voltage on the connection line 32 is greater than a preset voltage, so as to prevent the connection line 32 from being damaged. The electrostatic protection module 40 is connected to the connection line 32 near the output terminal 31. That is, the electrostatic protection module 40 is connected to the connection line 32 near the output terminal 31, and the current on the connection line 32 is adjusted to prevent the connection line from electrostatic breakdown, so as to better protect the connection line. Wherein the electrostatic protection module 40 is located at an edge of the bonding area and is located at an outer side of the flexible circuit board 30.
In one embodiment, in order to better prevent the electrostatic breakdown phenomenon of the connection line, as shown in fig. 6, the electrostatic protection module 40 includes six adjusting units 41, and the adjusting units 41 correspond to the connection line 32. In one embodiment, for example, all the connection lines 32 are connected to the esd protection module 40, and each connection line 32 corresponds to one adjustment unit 41. I.e. each connection line 32 is connected to an adjustment unit 41. It is understood that the number of the adjusting units 41 is not limited. In another embodiment, to simplify the manufacturing process, as shown in fig. 7, a portion of the connection lines 32 is connected to the esd protection module 40, for example, the outer 3 connection lines are connected to the esd protection module 40. The lengths of the connecting lines 32 are different from each other, and the length of the connecting line closer to the outer side is larger. In one embodiment, the set connection lines 32 are connected to the esd protection module 40, wherein each set connection line corresponds to an adjustment unit. The length of the set connection line is greater than the preset length, for example, the outermost 3 connection lines in fig. 7 are preset connection lines.
As shown in fig. 8, in order to further prevent the connecting line from electrostatic breakdown, the adjusting unit 41 includes a first adjusting subunit 51 and a second adjusting subunit 52; the first adjusting subunit 51 is configured to reduce a current value on the connection line 32 when the actual voltage on the connection line 32 is greater than a first preset voltage.
The second adjusting subunit 52 is configured to increase a current value on the connection line 32 when the actual voltage on the connection line 32 is smaller than a second preset voltage, where the first preset voltage is greater than the second preset voltage.
In one embodiment, as shown in fig. 9, the first adjusting subunit 51 includes a first thin film transistor T1; the gate and the source of the first thin film transistor T1 are connected to the corresponding connection line 32, the drain of the first thin film transistor T1 is connected to a first pull-down point 44, and the first pull-down point 44 is connected to the first preset voltage VGH. The second adjusting subunit 52 includes a second thin film transistor T2; the gate and the drain of the second thin film transistor T2 are both connected to a second pull-down point 45, and the second pull-down point 45 is connected to the second predetermined voltage VGL. Wherein the first thin film transistor T1 and the second thin film transistor T2 are both NPN-type thin film transistors. It is understood that the first pull-down point and the second pull-down point may be the access terminals of VGH and VGL, respectively. Of course, the specific position thereof can be set according to actual requirements.
In a specific operation, when the voltage value on the connection line 32 is greater than VGH, T1 is turned on, and a part of the current on the connection line 32 flows to the first pull-down point 44, and the rest flows to the connection line 32 after the point of the node P, so that the voltage value on the connection line is reduced. When the voltage value on the connection line 32 is smaller than VGL, T2 is turned on, and at this time, a part of the current on the connection line 32 flows to the second pull-down point 45, and the rest of the current flows to the connection line 32 (finally to the driving chip) after the node P, so that the current value on the connection line is reduced, and the voltage value on the connection line is reduced. Of course, it is understood that the electrostatic protection module 40 of the present invention may also adopt circuits with other structures.
To further reduce the impedance of the connection lines, the impedance of the connection lines 32 is less than the impedance of the traces in the flexible circuit board 30. In one embodiment, the cross-sectional structure of the connecting wire 32 includes Mo, Al, and Mo, and the material of the trace is copper.
It can be understood that the connection manner of the electrostatic protection module on the right side of the driving chip 20 is the same as that in fig. 5 or 7, and is not described herein again.
Because the electrostatic protection module is added on the prior display panel; when the absolute value of the actual voltage on the connecting line is larger than the preset voltage, the electrostatic protection module adjusts the current value on the connecting line to prevent the connecting line from being punctured due to overlarge voltage so as to avoid damaging the connecting line; so that the signal source can be normally input to the display panel to enable the display panel to normally display.
The utility model also provides a display device, it includes above-mentioned display panel. The display device may include a backlight module.
The utility model discloses a display panel and device, including driver chip, flexible circuit board and electrostatic protection module, the flexible circuit board includes a plurality of output terminals, and a plurality of the output terminal sets up in driver chip's relative both sides, output terminal through many connecting wires with driver chip's pin is connected; the electrostatic protection module comprises a plurality of adjusting units, the adjusting units correspond to at least one part of connecting lines in the connecting lines, each connecting line in the at least one part of connecting lines is connected with one adjusting unit, and the electrostatic protection module is used for adjusting the current value on the connecting lines to prevent the connecting lines from being damaged when the absolute value of the actual voltage on the connecting lines is greater than the preset voltage; due to the fact that the electrostatic protection module is added, the phenomenon of electrostatic breakdown of the connecting line is effectively avoided, a signal source can be normally input to the display panel, and the display panel can normally display.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.
Claims (10)
1. A display panel, comprising:
a driving chip;
the flexible circuit board is used for connecting the driving chip and the circuit board; the flexible circuit board comprises a plurality of output terminals, the output terminals are arranged on two opposite sides of the driving chip, and the output terminals are connected with pins of the driving chip through a plurality of connecting wires;
the electrostatic protection module, it includes a plurality of adjusting element, and is a plurality of the adjusting element with at least some connecting wires among many connecting wires correspond, every connecting wire in at least some connecting wires connects one the adjusting element, the electrostatic protection module is used for working as when the absolute value of actual voltage on the connecting wire is greater than when predetermineeing voltage, it is right current value on the connecting wire adjusts to prevent to damage the connecting wire.
2. The display panel according to claim 1,
each connecting line in all the connecting lines is connected with one adjusting unit.
3. The display panel according to claim 1,
the adjusting unit comprises a first adjusting subunit and a second adjusting subunit;
the first adjusting subunit is used for reducing the current value on the connecting line when the actual voltage on the connecting line is greater than a first preset voltage;
the second adjusting subunit is configured to increase a current value on the connection line when an actual voltage on the connection line is smaller than a second preset voltage, where the first preset voltage is larger than the second preset voltage.
4. The display panel according to claim 3,
the first adjusting subunit comprises a first thin film transistor;
the grid electrode and the source electrode of the first thin film transistor are connected with corresponding connecting lines, the drain electrode of the first thin film transistor is connected with a first pull-down point, and the first pull-down point is connected with the first preset voltage.
5. The display panel according to claim 4,
the second adjusting subunit comprises a second thin film transistor;
and the grid electrode and the drain electrode of the second thin film transistor are both connected with a second pull-down point, and the second pull-down point is connected to the second preset voltage.
6. The display panel according to claim 5,
the first thin film transistor and the second thin film transistor are both NPN thin film transistors.
7. The display panel according to claim 1,
the output terminal corresponds to the connecting wire, and the electrostatic protection module is connected with the connecting wire close to the output terminal side.
8. The display panel according to claim 1, wherein lengths of the plurality of connection lines are different, a set connection line of the plurality of connection lines is connected to the electrostatic protection module, and the length of the set connection line is greater than a preset length.
9. The display panel according to claim 1, wherein the display panel comprises a display area and a bonding area, and the electrostatic protection module is located at an edge of the bonding area and outside the flexible circuit board.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920516446.8U CN210091692U (en) | 2019-04-15 | 2019-04-15 | Display panel and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920516446.8U CN210091692U (en) | 2019-04-15 | 2019-04-15 | Display panel and device |
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| Publication Number | Publication Date |
|---|---|
| CN210091692U true CN210091692U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920516446.8U Active CN210091692U (en) | 2019-04-15 | 2019-04-15 | Display panel and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979371A (en) * | 2019-04-15 | 2019-07-05 | 武汉华星光电技术有限公司 | A kind of display panel and device |
| CN112002254A (en) * | 2020-09-03 | 2020-11-27 | 上海天马微电子有限公司 | Display device |
-
2019
- 2019-04-15 CN CN201920516446.8U patent/CN210091692U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979371A (en) * | 2019-04-15 | 2019-07-05 | 武汉华星光电技术有限公司 | A kind of display panel and device |
| CN112002254A (en) * | 2020-09-03 | 2020-11-27 | 上海天马微电子有限公司 | Display device |
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