CN106658947A - Flexible circuit board and display panel - Google Patents
Flexible circuit board and display panel Download PDFInfo
- Publication number
- CN106658947A CN106658947A CN201611255299.0A CN201611255299A CN106658947A CN 106658947 A CN106658947 A CN 106658947A CN 201611255299 A CN201611255299 A CN 201611255299A CN 106658947 A CN106658947 A CN 106658947A
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- CN
- China
- Prior art keywords
- testing weld
- weld pad
- golden finger
- flexible pcb
- testing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0266—Marks, test patterns or identification means
- H05K1/0268—Marks, test patterns or identification means for electrical inspection or testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
- G01R31/2812—Checking for open circuits or shorts, e.g. solder bridges; Testing conductivity, resistivity or impedance
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/16—Inspection; Monitoring; Aligning
- H05K2203/162—Testing a finished product, e.g. heat cycle testing of solder joints
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Tests Of Electronic Circuits (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention discloses a flexible circuit board and a display panel. The flexible circuit board comprises a main body part and an aided testing part connected with the main body part; multiple golden fingers are arranged on the main body part; each golden finger extends to a partition part at the connecting part of the main body part and the aided testing part; the partition part is used for separating the aided testing part from the flexible circuit board; each golden finger comprises at least a pair of testing bonding pads, one end of one testing bonding pad far away from the aided testing part is insulated from the one end of another testing bonding pad far away from the aided testing part; at least a pair of testing points are arranged on the aided testing part, and each testing point is electrically connected with the corresponding testing bonding pad. The flexible circuit board disclosed by the embodiment of the invention reduces the thickness of the display panel, and saves the internal space of the display panel; and the coupling impedance between the main flexible circuit board and the aided flexible circuit board or between the integrated circuit wafers can be precisely detected.
Description
Technical field
The present embodiments relate to Display Technique, more particularly to a kind of flexible PCB and display floater.
Background technology
Generally, display device can carry out a series of detection program to confirm display device after completing, all
Whether display quality meets standard.Wherein, the quality that main flexible PCB is engaged with auxiliary flexible PCB or IC wafer
It is related to the quality of whole technique, affects the reliability of product, therefore, the detection to junction impedance is of crucial importance.
At present, for the engagement in display floater between main flexible PCB and auxiliary flexible PCB or IC wafer
The detection mode of impedance, is that extra testing cushion or test board are arranged in display floater.However, these testing cushions or test board
Only it is used as internal detection when product is generated, does not just use after product export, but testing cushion useless or test board are still occupied
The inner space of product so that the thickness of product increases, and does not meet the lightening design requirement of display device.
The content of the invention
The present invention provides a kind of flexible PCB and display floater, to reduce the thickness of display floater, saves display floater
Inner space.
In a first aspect, embodiments provide a kind of flexible PCB, including main part and connect with the main part
The subtest portion for connecing；
Multiple golden fingers are provided with the main part, the golden finger extends to the main part with the subtest
The cutting part of portion junction, the cutting part is used to separate the subtest portion with the flexible PCB；
The golden finger includes at least one pair of testing weld pad, one end phase of the testing weld pad away from the subtest portion
Mutually insulation；
At least one pair of test point is provided with the subtest portion, the test point is electric with corresponding testing weld pad respectively
Connection.
Second aspect, the embodiment of the present invention additionally provides a kind of display floater, including periphery circuit region, the peripheral circuit
Area is provided with main flexible PCB；
The main flexible PCB includes main part and multiple first golden fingers for being arranged on the main part, described the
One golden finger extends to side of the main flexible PCB positioned at the display floater edge；
First golden finger includes at least one pair of first testing weld pad, and first testing weld pad is away from the display surface
One end mutually insulated of edges of boards edge；
First testing weld pad is used for before cutting part of the main part with subtest portion junction is disconnected, and is electrically connected
It is connected to corresponding test point in the subtest portion.
The embodiment of the present invention is coupled together main part and subtest portion by cutting part, forms flexible PCB, should
Multiple golden fingers are provided with the main part of flexible PCB, golden finger includes at least one pair of testing weld pad, in subtest portion
At least one pair of test point is provided with, golden finger extends to the cutting part of main part and subtest portion junction, and survey therein
Test weld disk is electrically connected with corresponding test point；The flexible PCB may be disposed in display floater, wherein, main body section is in display
In panel, segmentaion position can detect each joint (such as main flexible PCB and auxiliary flexibility in display floater edge by test point
Between circuit board or IC wafer) junction impedance, after junction impedance has been detected, can be by subtest by cutting part
Portion separates from flexible PCB or display floater, thus, both can the main flexible PCB of accurate detection and auxiliary flexible PCB or
Junction impedance between IC wafer, can reduce the thickness of display floater again, save the inner space of display floater.
Description of the drawings
Fig. 1 is a kind of structural representation of flexible PCB provided in an embodiment of the present invention；
Fig. 2 is the structural representation in Fig. 1 after the amplification of a-quadrant；
Fig. 3 is flexible PCB provided in an embodiment of the present invention and the structural representation after binding board binding；
Fig. 4 is the structural representation for treating binding board provided in an embodiment of the present invention；
Fig. 5 is for flexible PCB provided in an embodiment of the present invention with the golden finger after binding board binding away from subtest portion
The cross-sectional view of one end；
Fig. 6 is another kind of structural representation after a-quadrant amplification in Fig. 1；
Fig. 7 is the structural representation of display floater provided in an embodiment of the present invention；
Fig. 8 is the structural representation in Fig. 7 after the amplification of golden finger 220；
Fig. 9 is structural representation of the display floater provided in an embodiment of the present invention before subtest portion is disconnected；
Figure 10 is the structural representation in Fig. 9 after the amplification of B regions；
Figure 11 is the structural representation that auxiliary flexible PCB provided in an embodiment of the present invention is tied on display floater；
Figure 12 is golden finger after auxiliary flexible PCB binding provided in an embodiment of the present invention away from display floater edge one end
Cross-sectional view；
Figure 13 is golden finger after auxiliary flexible PCB binding provided in an embodiment of the present invention away from display floater edge one end
Another kind of cross-sectional view.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in further detail.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
With reference to the structural representation that Fig. 1 and Fig. 2, Fig. 1 are a kind of flexible PCB provided in an embodiment of the present invention；Fig. 2 is
Structural representation after a-quadrant is amplified in Fig. 1.As shown in figure 1, the flexible PCB in the present embodiment may include main part 100
And the subtest portion 200 being connected with main part 100.
Wherein, multiple golden fingers 10 are provided with main part 100, with reference to Fig. 2, golden finger 10 extend to main part 100 with
The cutting part 20 of the junction of subtest portion 200, cutting part 20 is used for after test terminates, by subtest portion 200 and flexibility
Circuit board is separated；
The golden finger 10 includes at least one pair of testing weld pad 11, one end phase of the testing weld pad 11 away from subtest portion 200
Mutually insulation；
Be provided with least one pair of test point 21 in subtest portion 200, test point 21 respectively with corresponding testing weld pad 11
Electrical connection.
Exemplary, as shown in figure 3, being tied to above-mentioned flexible electrical in other flexible PCBs or IC wafer 300
After on the plate of road, universal meter can be used, and select the resistance grade of universal meter, the resistance between direct detection each pair test point, so as to
Detect the junction impedance of testing weld pad joint in golden finger 10.
Specifically, as shown in figure 4, other flexible PCBs being tied on flexible PCB or IC wafer 300
Including with flexible PCB on the engagement golden finger 30 that is oppositely arranged of golden finger, the engagement golden finger 30 includes and flexible circuit
At least one pair of engagement testing weld pad 31 that testing weld pad on plate in golden finger is oppositely arranged.With reference to Fig. 5, by being oppositely arranged
Golden finger and engagement golden finger press together, realization other flexible PCBs or IC wafer 300 are tied to it is soft
On the main part 100 of property circuit board.In addition, one end phase short circuit of the above-mentioned each pair engagement testing weld pad 31 away from subtest portion,
So that testing weld pad 11 with engage after testing weld pad 31 presses, form resistance detection loop with universal meter.By the detection of universal meter
Pen is electrically connected each pair test point, and reads the numerical value of universal meter, and the numerical value is junction impedance；After detection is finished, can break
Cutting part is opened, subtest portion is torn from flexible PCB.
Thus, the flexible PCB that the present embodiment is provided is applied in display floater, subtest portion is just exposed
Outside display floater, i.e. segmentaion position after junction impedance has been detected, will can be aided in display floater edge by cutting part
Test department is separated from display floater, thus, both can the main flexible PCB of accurate detection and auxiliary flexible PCB or integrated circuit
Junction impedance between chip, can reduce the thickness of display floater again, save the inner space of display floater.
Optionally, with reference to Fig. 2, cutting part 20 may include micro- even point, and subtest portion 200 passes through micro- company with main part 100
Point 20 connects.Due to the connecting portion between the similar stamp of micro- even point, therefore, after junction impedance has been detected, can be easy to
Subtest portion is torn from flexible PCB.
In addition, the test point of the embodiment of the present invention may include circular metal real point, metal material can be copper.Test point point
Not Tong Guo copper facing cabling electrically connect with corresponding testing weld pad.
As shown in fig. 6, the golden finger on flexible PCB main part of the present invention also includes at least one signal transmission pad
12, optionally, the testing weld pad in a pair of testing weld pads 11 can be disposed adjacent or testing weld pad between at least one signal is set
Transmission pad 12.
Exemplary, the golden finger of the embodiment of the present invention may include two pairs of testing weld pads.With reference to Fig. 2, two pairs of testing weld pads
11 both sides for being located at a golden finger respectively.Now, if the junction impedance at two pairs of testing weld pads 11 is both less than or equal to default
Resistance value, then bind good；As long as if having junction impedance at a pair of testing weld pads 11 more than default resistance value, bind compared with
Difference, need to bind again.Therefore, two pairs of testing weld pads are respectively arranged at the both sides of a golden finger, can be preferably detected and be tied up
Fixed quality.
The embodiment of the present invention additionally provides a kind of display floater, and the main flexible PCB in the display floater can adopt above-mentioned
The flexible PCB that embodiment is provided.
With reference to Fig. 7-10, Fig. 7 is the structural representation of display floater provided in an embodiment of the present invention；Fig. 8 is golden hand in Fig. 7
Refer to the structural representation after 220 amplifications；Fig. 9 is knot of the display floater provided in an embodiment of the present invention before subtest portion is disconnected
Structure schematic diagram；Figure 10 is the structural representation in Fig. 9 after the amplification of B regions.As shown in fig. 7, the display floater of the present embodiment includes
Periphery circuit region 1, periphery circuit region 1 is provided with main flexible PCB 2.
Wherein, main flexible PCB 2 includes main part 210 and multiple first golden fingers being arranged on main part 210
220, with reference to Fig. 8, the first golden finger 220 extends to side of the main flexible PCB 2 positioned at display floater edge 101；
With reference to Fig. 8, the first golden finger includes at least one pair of first testing weld pad 221, and the first testing weld pad 221 is away from display
One end mutually insulated of face plate edge 101；
With reference to Fig. 9 and Figure 10, the first testing weld pad 221 is used to disconnect main part 210 and the junction of subtest portion 230
Cutting part 240 before, be electrically connected to corresponding test point 231 in subtest portion 230.Wherein, subtest portion 230 passes through position
Cutting part 240 at display floater edge 101 is connected to main part 210.
To sum up, the junction impedance at detection the first testing weld pad 221 of correspondence of test point 231 can be passed through, engagement is being detected
After impedance, subtest portion can be separated from display floater by cutting part, thus, both can the main flexible PCB of accurate detection
With the junction impedance between auxiliary flexible PCB or IC wafer, the thickness of display floater can be reduced again, save display surface
The inner space of plate.
Optionally, with reference to Figure 10, cutting part 240 may include micro- even point, and subtest portion 230 is with main part 210 by micro-
Even point 240 connects.Due to the connecting portion between the similar stamp of micro- even point, therefore, after junction impedance has been detected, can hold very much
Change places and subtest portion 230 tears from display floater.
As shown in figure 11, periphery circuit region 1 also includes auxiliary flexible PCB 3, with reference to Figure 12, sets on auxiliary flexible PCB 3
The second golden finger is equipped with, the second golden finger is oppositely arranged with one first golden finger 220；
Second golden finger includes at least one pair of second testing weld pad 331, the second testing weld pad 331 and the first testing weld pad
221 are oppositely arranged；
Main flexible PCB 2 and auxiliary flexible PCB 3 are electrically engaged by the first golden finger 220 and the second golden finger；
The golden finger of each pair second away from display floater edge one end phase short circuit, to carry out junction impedance inspection to display floater
During survey, after the first testing weld pad 221 and the pressing of the second testing weld pad 331, with universal meter resistance detection loop is formed.
Optionally, with reference to Figure 12, the second testing weld pad in a pair second testing weld pads 331 is disposed adjacent, shorting stub 333
Arrange with layer with the second testing weld pad 331.
In addition, as shown in figure 13, the first golden finger 220 and the second golden finger are also respectively including at least one letter being oppositely arranged
Number transmission pad 332, the second testing weld pad in a pair second testing weld pads 331 and the interval setting of signal transmission pad 332 are short
The different layers of 333 and second testing weld pad of wiring 331, shorting stub is electrically connected a pair second by the via on auxiliary flexible PCB 3
Testing weld pad 331.Thus, can avoid being connected to the signal transmission pad 332 of display floater viewing area by shorting stub 333 and the
The phase short circuit of two testing weld pad 331.
With reference to Figure 10, the first golden finger includes two pairs of the first testing weld pads 221, and two pairs of the first testing weld pads 221 distinguish position
In the both sides of the first golden finger.Now, if the junction impedance at two pairs of testing weld pads 221 is both less than or equal to default resistance value,
Then bind good；As long as if having the junction impedance at a pair of testing weld pads 221 more than default resistance value, binding poor, weight is needed
New binding.Therefore, two pairs of testing weld pads are respectively arranged at the both sides of a golden finger, the good of binding can be preferably detected
It is bad.
Display floater provided in an embodiment of the present invention, by the way that the main part of main flexible PCB is arranged at into display floater
Interior, cutting part is arranged at display floater edge, and subtest portion is exposed to outside display floater, by detecting in subtest portion
Impedance between each pair test point, can detect that each joint, i.e., main flexible PCB and auxiliary flexible PCB or integrated circuit
Junction impedance between chip, after junction impedance has been detected, by cutting part can by subtest portion from flexible PCB or
Separate on display floater, thus, both can be between the main flexible PCB of accurate detection and auxiliary flexible PCB or IC wafer
Junction impedance, can reduce the thickness of display floater again, save the inner space of display floater.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (12)
1. a kind of flexible PCB, it is characterised in that including main part and the subtest portion being connected with the main part；
Multiple golden fingers are provided with the main part, the golden finger extends to the main part and connects with the subtest portion
The cutting part at place is connect, the cutting part is used to separate the subtest portion with the flexible PCB；
The golden finger includes at least one pair of testing weld pad, and the testing weld pad is mutually exhausted away from the one end in the subtest portion
Edge；
At least one pair of test point is provided with the subtest portion, the test point is electrically connected respectively with corresponding testing weld pad
Connect.
2. flexible PCB according to claim 1, it is characterised in that the cutting part includes micro- even point, the auxiliary
Test department is connected with the main part by micro- even point.
3. flexible PCB according to claim 1, it is characterised in that the test point includes circular metal real point.
4. flexible PCB according to claim 1, it is characterised in that the test point respectively by copper facing cabling with it is right
The testing weld pad electrical connection answered.
5. flexible PCB according to claim 1, it is characterised in that the golden finger is also passed including at least one signal
Defeated pad, the testing weld pad in the pair of testing weld pad be disposed adjacent or with the signal transmission pad interval setting.
6. flexible PCB according to claim 1, it is characterised in that the golden finger includes two pairs of testing weld pads, institute
State the both sides that two pairs of testing weld pads are located at respectively a golden finger.
7. a kind of display floater, it is characterised in that including periphery circuit region, the periphery circuit region is provided with main flexible circuit
Plate；
The main flexible PCB includes main part and multiple first golden fingers being arranged on the main part, first gold medal
Finger extends to side of the main flexible PCB positioned at the display floater edge；
First golden finger includes at least one pair of first testing weld pad, and first testing weld pad is away from the display surface edges of boards
One end mutually insulated of edge；
First testing weld pad is used for before cutting part of the main part with subtest portion junction is disconnected, and is electrically connected to
Corresponding test point in the subtest portion.
8. display floater according to claim 7, it is characterised in that the cutting part includes micro- even point, the auxiliary is surveyed
Examination portion is connected with the main part by micro- even point.
9. display floater according to claim 7, it is characterised in that the periphery circuit region also includes auxiliary flexible circuit
Plate, is provided with the second golden finger on the auxiliary flexible PCB, second golden finger sets with first golden finger is relative described in one
Put；
Second golden finger includes at least one pair of second testing weld pad, second testing weld pad and first testing weld pad
It is oppositely arranged；
The main flexible PCB and the auxiliary flexible PCB are connect by first golden finger and the second golden finger electricity
Close；
One end phase short circuit of second testing weld pad described in each pair away from the display floater edge.
10. display floater according to claim 9, it is characterised in that the second survey in the pair of second testing weld pad
Test weld disk is disposed adjacent, and shorting stub is arranged with second testing weld pad with layer.
11. display floaters according to claim 9, it is characterised in that first golden finger and second golden finger
Also respectively include at least one signal transmission pad that is oppositely arranged, the second testing weld pad in the pair of second testing weld pad it
Between include signal transmission pad described at least one, shorting stub and the second testing weld pad different layers, shorting stub pass through via
Electrically connect the pair of second testing weld pad.
12. display floaters according to any one of claim 7-10, it is characterised in that first golden finger includes two pairs
First testing weld pad, two pairs of first testing weld pads are respectively positioned at the both sides of first golden finger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611255299.0A CN106658947B (en) | 2016-12-30 | 2016-12-30 | A kind of flexible circuit board and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611255299.0A CN106658947B (en) | 2016-12-30 | 2016-12-30 | A kind of flexible circuit board and display panel |
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| Publication Number | Publication Date |
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| CN106658947A true CN106658947A (en) | 2017-05-10 |
| CN106658947B CN106658947B (en) | 2019-05-17 |
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| CN201611255299.0A Active CN106658947B (en) | 2016-12-30 | 2016-12-30 | A kind of flexible circuit board and display panel |
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| CN107144602A (en) * | 2017-05-16 | 2017-09-08 | 武汉华星光电技术有限公司 | Binding region conducting particles presses detection method |
| CN107610625A (en) * | 2017-08-31 | 2018-01-19 | 昆山国显光电有限公司 | Bind impedance test device and binding impedance detecting method |
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