CN107025893A - A kind of drive circuit and liquid crystal display device - Google Patents
A kind of drive circuit and liquid crystal display device Download PDFInfo
- Publication number
- CN107025893A CN107025893A CN201710415786.7A CN201710415786A CN107025893A CN 107025893 A CN107025893 A CN 107025893A CN 201710415786 A CN201710415786 A CN 201710415786A CN 107025893 A CN107025893 A CN 107025893A
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- input
- liquid crystal
- crystal display
- drive circuit
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention provides a kind of drive circuit and liquid crystal display device, and the drive circuit includes：Flexible connector, for connecting the printed circuit board (PCB) and driving chip, the flexible connector includes multiple first input ends, and the first input end is used for the initial signal for inputting the external world；The end of wherein described first input end is shaped as arc；The driving chip, including multiple second inputs and output end；Second input is used to receive the initial signal；The output end is used for output drive signal, and the drive signal is converted to the initial signal, and the drive signal is used to be driven liquid crystal display panel.The drive circuit and liquid crystal display device of the present invention, can avoid producing point discharge phenomenon, so as to prevent that liquid crystal display panel is caused to damage.
Description
【Technical field】
The present invention relates to display technology field, more particularly to a kind of drive circuit and liquid crystal display device.
【Background technology】
Existing liquid crystal display panel due to there is static discharge phenomenon (Electro-Static discharge, ESD),
So as to be easily damaged panel itself circuit, product quality is reduced.
In order to avoid static discharge, increase electrostatic protection line generally between the input and output end of driving chip.But
It is more and more finer with the precision of panel so that the distance between input and output end of driving chip are less and less, lead
Electrostatic protection line is caused to prevent electrostatic well.And because electrostatic protection line is closed circuit design, anti-static effect is poor.
Therefore, it is necessary to a kind of drive circuit and liquid crystal display device be provided, to solve the problems of prior art.
【The content of the invention】
It is an object of the invention to provide a kind of drive circuit and liquid crystal display device, effectively it can prevent electrostatic from putting
Electricity.
In order to solve the above technical problems, the present invention provides a kind of drive circuit, it includes：
Printed circuit board (PCB)；
Flexible connector, for connecting the printed circuit board (PCB) and driving chip, the flexible connector includes multiple the
One input, the first input end is used for the initial signal for inputting the external world；The shape of the end of wherein described first input end
For arc；
The driving chip, including multiple second inputs and output end；Second input is used to receive described first
Beginning signal；The output end is used for output drive signal, and the drive signal is converted to the initial signal,
The drive signal is used to be driven liquid crystal display panel.
In the drive circuit of the present invention, the shape of the end of second input is also arc.
In the drive circuit of the present invention, the shape of the end of second input and the end of the first input end
Shape match.
In the drive circuit of the present invention, electrostatic protection line is provided between second input and the output end,
Preset value is smaller than between the electrostatic protection line and the output end.
In the drive circuit of the present invention, the electrostatic protection line is connected with the ground wire of the liquid crystal display panel.
In the drive circuit of the present invention, the end of the first input end is shaped as semicircle, first input
The end at end has a width, and the semicircular diameter is equal to the width.
The present invention also provides a kind of liquid crystal display device, and it includes：
Liquid crystal display panel, including a plurality of data lines and multi-strip scanning line, and by the data wire and the scan line
The multiple pixel cells limited；
Drive circuit, it includes：
Printed circuit board (PCB)；
Flexible connector, for connecting the printed circuit board (PCB) and driving chip, the flexible connector includes multiple the
One input, the first input end is used for the initial signal for inputting the external world；The shape of the end of wherein described first input end
For arc；
The driving chip, including multiple second inputs and output end；Second input is used to receive described first
Beginning signal；The output end is used for output drive signal, and the drive signal is converted to the initial signal,
The drive signal is used to be driven liquid crystal display panel.
In the liquid crystal display device of the present invention, the shape of the end of second input is also arc.
In the liquid crystal display device of the present invention, the shape of the end of second input and the first input end
The shape of end matches.
In the liquid crystal display device of the present invention, electrostatic protection is provided between second input and the output end
Line, preset value is smaller than between the electrostatic protection line and the output end.
The drive circuit and liquid crystal display device of the present invention, by the way that the shape of the end of the input of flexible connector is set
Arc is calculated as, the surface curvature of the end is reduced, it is to avoid point discharge phenomenon is produced, so as to avoid making liquid crystal display panel
Into damage.
【Brief description of the drawings】
Fig. 1 is the structural representation of existing drive circuit；
Fig. 2 is the structural representation of present invention driver circuit.
【Embodiment】
The explanation of following embodiment is the particular implementation implemented to illustrate the present invention can be used to reference to additional schema
Example.The direction term that the present invention is previously mentioned, such as " on ", " under ", "front", "rear", "left", "right", " interior ", " outer ", " side "
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used is to illustrate and understand the present invention, and is not used to
The limitation present invention.In figure, the similar unit of structure is represented with identical label.
Fig. 1 is refer to, Fig. 1 is the structural representation of existing drive circuit.
Existing drive circuit includes printed circuit board (PCB) (not shown), flexible connector 11 and driving chip 12,
Flexible connector 11 is used to connect printed circuit board (PCB) and driving chip 12.The flexible connector 11 includes multiple inputs 111, should
Extraneous initial signal is input to input 121 by input 111.The driving chip 12 includes multiple inputs 121 and defeated
Go out end 122；The input 121 receives the initial signal.The output end 122 is to panel output drive signal, the wherein drive
Dynamic signal is converted to according to the initial signal.Wherein output end 122 and the signal wire 14 of liquid crystal display panel connects
Connect, so that drive signal is inputted in liquid crystal display panel.
Electrostatic protection line 13 is provided between the input 121 and the output end 122, the electrostatic protection line 13 is used to inhale
The electrostatic that input 121 is transmitted is received, so as to avoid that liquid crystal display panel is caused to damage.
As shown in dotted outline in FIG., the shape of the end of the input 111 and the end of the input 121 is all rectangle,
Namely the surface curvature of end easily produces point discharge phenomenon than larger, liquid crystal display is easily damaged under forceful electric power field action
Panel.
Fig. 2 is refer to, Fig. 2 is the structural representation of existing drive circuit.
As shown in Fig. 2 the present invention drive circuit include printed circuit board (PCB) (not shown), flexible connector 21 and
Driving chip 22.The printed circuit board (PCB) is connected by flexible connector 21 with driving chip 22.The flexible connector 21 is wrapped
Multiple first input ends 211 are included, the first input end 211 inputs the initial signal in the external world to driving chip 22；It is wherein described
The end of first input end 211 is shaped as arc.Due to the end of first input end 211 is shaped into arc, subtract
The small surface curvature of end, so as to avoid flexible connector from producing point discharge phenomenon, and then prevents from transmitting electrostatic
Into flexible connector 22, effectively prevent from that liquid crystal display panel is caused to damage.
In one embodiment, the end of the first input end 211 is shaped as semicircle, the first input end
211 end has a width d1, and the semicircular diameter is equal to width d1.
The driving chip 22 includes multiple second inputs 221 and output end 222；Second input 221 is received
The initial signal that flexible connector 21 is inputted；The output end 222 is used for liquid crystal display panel input drive signal, the drive
Dynamic signal is converted to the initial signal.Specifically, the output end 222 and the signal wire 14 of liquid crystal display panel connect
Connect, drive signal is inputted in liquid crystal display panel, so as to be driven to liquid crystal display panel.
In one embodiment, the end of second input 221 is shaped as rectangle.
In another embodiment, in order to preferably be protected to liquid crystal display panel, the end of second input 221
The shape in portion is also arc.Due to the end of the second input 221 is shaped into arc, the surface of the end is reduced
Curvature, so as to avoid driving chip from producing point discharge phenomenon, and then avoids transmitting electrostatic into output end, effectively
Prevent that liquid crystal display panel is caused to damage.
In order to further reduce the surface curvature of end, in one embodiment, the end of second input 221
Shape is also semicircle, and the end of second input 221 has a width d2, and the semicircular diameter is equal to the width
d2。
In order to simplify fabrication procedures, production cost, in one embodiment, the end of second input 221 are reduced
Shape and the shape of end of the first input end 211 match.Such as when the first input end 211 end shape
When shape is semicircle, the shape of the end of second input 221 is also semicircle.
In one embodiment, in order to further prevent static discharge phenomenon, in second input 221 and described defeated
Go out between holding 222 and be provided with electrostatic protection line 23, the quantity of the electrostatic protection line 23 can be a plurality of.When electrostatic protection line 23
When quantity is a plurality of, the material of each electrostatic protection line 23 can be different.Wherein described electrostatic protection line 23 and the output end 222
Between spacing L be less than preset value.Specifically, between such as less than described electrostatic protection line 23 and second input 221
Spacing.It should be understood that when the spacing L between electric protection line 23 and the output end 222 is less than preset value, one can be entered
Step prevents the electrostatic remained in the second input 221 from entering output end 222, and enters liquid crystal display panel by input 22
In, so as to be better protected from damaging liquid crystal display panel.
In one embodiment, the driving chip 22 has an earth terminal (not shown), the earth terminal and liquid crystal
Show the ground wire connection in panel.Wherein, the liquid crystal display panel is provided with ground wire, the electrostatic protection line 23 and liquid crystal display
The ground wire connection of panel, conducts to outside liquid crystal display panel so as to the electrostatic that receives itself.
The drive circuit of the present invention, by the way that the shape of the end of the input of flexible connector is designed as into arc, reduces
The surface curvature of the end, it is to avoid produce point discharge phenomenon, so as to avoid causing to damage to liquid crystal display panel.
The embodiment of the present invention also provides a kind of liquid crystal display device, and it includes liquid crystal display panel and drive circuit, the liquid
LCD panel includes a plurality of data lines and multi-strip scanning line, and the multiple pictures limited by the data wire and the scan line
Plain unit；
As shown in Fig. 2 the present invention drive circuit include printed circuit board (PCB) (not shown), flexible connector 21 and
Driving chip 22.The printed circuit board (PCB) is connected by flexible connector 21 with driving chip 22.The flexible connector 21 is wrapped
Multiple first input ends 211 are included, the first input end 211 inputs the initial signal in the external world to driving chip 22；It is wherein described
The end of first input end 211 is shaped as arc.Due to the end of first input end is shaped into arc, reduce
The surface curvature of end, so as to avoid flexible connector from producing point discharge phenomenon, and then prevents from transmitting electrostatic to soft
Property connector 22 in, effectively prevent to liquid crystal display panel cause damage.
In one embodiment, the end of the first input end 211 is shaped as semicircle, the first input end
211 end has a width d1, and the semicircular diameter is equal to width d1.
The driving chip 22 includes multiple second inputs 221 and output end 222；Second input 221 is received
The initial signal that flexible connector 21 is inputted；The output end 222 is used for liquid crystal display panel input drive signal, the drive
Dynamic signal is converted to the initial signal.Specifically, the output end 222 and the signal wire 14 of liquid crystal display panel connect
Connect, drive signal is inputted in liquid crystal display panel, so as to be driven to liquid crystal display panel.
In one embodiment, the end of second input 221 is shaped as rectangle.
In another embodiment, in order to preferably be protected to liquid crystal display panel, the end of second input 221
The shape in portion is also arc.Due to the end of the second input is shaped into arc, the surface for reducing the end is bent
Rate, so as to avoid driving chip from producing point discharge phenomenon, and then avoids transmitting electrostatic into output end, effectively prevents
Only liquid crystal display panel is caused to damage.
In order to further reduce the surface curvature of end, in one embodiment, the end of second input 221
Shape is also semicircle, and the end of second input 221 has a width d2, and the semicircular diameter is equal to the width
d2。
In order to simplify fabrication procedures, production cost, in one embodiment, the end of second input 221 are reduced
Shape and the shape of end of the first input end 211 match.Such as when the first input end 211 end shape
When shape is semicircle, the shape of the end of second input 221 is also semicircle.
In one embodiment, in order to further prevent static discharge phenomenon, in second input 221 and described defeated
Go out between holding 222 and be provided with electrostatic protection line 23, the quantity of the electrostatic protection line 23 can be a plurality of.When electrostatic protection line 23
When quantity is a plurality of, the material of each electrostatic protection line 23 can be different.Wherein described electrostatic protection line 23 and the output end 222
Between spacing L be less than preset value.Specifically, between such as less than described electrostatic protection line 23 and second input 221
Spacing.The preset value can specifically be set based on experience value, such as the preset value is 2 millimeters.It should be understood that working as electric protection
When spacing L between line 23 and the output end 222 is less than preset value, it can further prevent from remaining in the second input 221
Electrostatic enter output end 222, and by input 22 enter liquid crystal display panel in so that be better protected from damage liquid crystal
Show panel.
In one embodiment, the driving chip 22 has an earth terminal, the earth terminal and connecing in liquid crystal display panel
Ground wire is connected.Wherein, the electrostatic protection line 23 is connected with the ground wire in liquid crystal display panel, so as to which itself is received
Electrostatic conduct to outside liquid crystal display panel.
The liquid crystal display device of the present invention, by the way that the shape of the end of the input of flexible connector is designed as into arc,
The surface curvature of the end is reduced, it is to avoid produce point discharge phenomenon, so as to avoid that liquid crystal display panel is caused to damage.
In summary, although the present invention it is disclosed above with preferred embodiment, but above preferred embodiment and be not used to limit
The system present invention, one of ordinary skill in the art without departing from the spirit and scope of the present invention, can make various changes and profit
Adorn, therefore protection scope of the present invention is defined by the scope that claim is defined.
Claims (10)
1. a kind of drive circuit, it is characterised in that including：
Printed circuit board (PCB)；
Flexible connector, for connecting the printed circuit board (PCB) and driving chip, it is defeated that the flexible connector includes multiple first
Enter end, the first input end is used for the initial signal for inputting the external world；The end of wherein described first input end is shaped as arc
Shape；
The driving chip, including multiple second inputs and output end；Second input is used to receive the initial letter
Number；The output end is used for output drive signal, and the drive signal is converted to the initial signal, described
Drive signal is used to be driven liquid crystal display panel.
2. drive circuit according to claim 1, it is characterised in that the shape of the end of second input is also arc
Shape.
3. drive circuit according to claim 2, it is characterised in that the shape of the end of second input and described
The shape of the end of first input end matches.
4. drive circuit according to claim 1, it is characterised in that set between second input and the output end
Electrostatic protection line is equipped with, preset value is smaller than between the electrostatic protection line and the output end.
5. drive circuit according to claim 4, it is characterised in that the electrostatic protection line and the liquid crystal display panel
Ground wire connection.
6. drive circuit according to claim 1, it is characterised in that the end of the first input end is shaped as semicircle
Shape, the end of the first input end has a width, and the semicircular diameter is equal to the width.
7. a kind of liquid crystal display device, it is characterised in that including：
Liquid crystal display panel, including a plurality of data lines and multi-strip scanning line, and limited by the data wire and the scan line
Multiple pixel cells；
Drive circuit, it includes：
Printed circuit board (PCB)；
Flexible connector, for connecting the printed circuit board (PCB) and driving chip, it is defeated that the flexible connector includes multiple first
Enter end, the first input end is used for the initial signal for inputting the external world；The end of wherein described first input end is shaped as arc
Shape；
The driving chip, including multiple second inputs and output end；Second input is used to receive the initial letter
Number；The output end is used for output drive signal, and the drive signal is converted to the initial signal, described
Drive signal is used to be driven liquid crystal display panel.
8. liquid crystal display device according to claim 7, it is characterised in that the shape of the end of second input
For arc.
9. liquid crystal display device according to claim 8, it is characterised in that the shape of the end of second input and
The shape of the end of the first input end matches.
10. liquid crystal display device according to claim 7, it is characterised in that second input and the output end
Between be provided with electrostatic protection line, be smaller than preset value between the electrostatic protection line and the output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710415786.7A CN107025893A (en) | 2017-06-02 | 2017-06-02 | A kind of drive circuit and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710415786.7A CN107025893A (en) | 2017-06-02 | 2017-06-02 | A kind of drive circuit and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107025893A true CN107025893A (en) | 2017-08-08 |
Family
ID=59529083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710415786.7A Pending CN107025893A (en) | 2017-06-02 | 2017-06-02 | A kind of drive circuit and liquid crystal display device |
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Application publication date: 20170808 |