CN106658947B - A kind of flexible circuit board and display panel - Google Patents
A kind of flexible circuit board and display panel Download PDFInfo
- Publication number
- CN106658947B CN106658947B CN201611255299.0A CN201611255299A CN106658947B CN 106658947 B CN106658947 B CN 106658947B CN 201611255299 A CN201611255299 A CN 201611255299A CN 106658947 B CN106658947 B CN 106658947B
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- CN
- China
- Prior art keywords
- flexible circuit
- testing weld
- circuit board
- weld pad
- golden finger
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Classifications
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- 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
Abstract
The embodiment of the invention discloses a kind of flexible circuit board and display panels.Wherein, flexible circuit board includes main part and the subtest portion connecting with the main part；Multiple golden fingers are provided on the main part, the golden finger extends to the cutting part of the main part Yu subtest portion junction, and the cutting part is for separating the subtest portion with the flexible circuit board；The golden finger includes at least a pair of of testing weld pad, one end mutually insulated of the testing weld pad far from the subtest portion；At least a pair of of test point is provided in the subtest portion, the test point is electrically connected with corresponding testing weld pad respectively.The embodiment of the present invention reduces the thickness of display panel, has saved the inner space of display panel, can accurately detect the junction impedance between main flexible circuit board and auxiliary flexible circuit board or IC wafer.
Description
Technical field
The present embodiments relate to display technology more particularly to a kind of flexible circuit boards and display panel.
Background technique
In general, display device after completing, can all carry out a series of detection program to confirm display device
Whether display quality complies with standard.Wherein, the quality that main flexible circuit board is engaged with auxiliary flexible circuit board or IC wafer
It is related to the quality of entire technique, influences the reliability of product, it is therefore, of crucial importance to the detection of junction impedance.
Currently, for the engagement between flexible circuit board main in display panel and auxiliary flexible circuit board or IC wafer
The detection mode of impedance is that additional testing cushion or test board are arranged in display panel.However, these testing cushions or test board
It detects, is not just used after product export, but testing cushion or test board useless still occupies inside being only used as when generating product
The inner space of product do not meet the lightening design requirement of display device so that the thickness of product increases.
Summary of the invention
The present invention provides a kind of flexible circuit board and display panel, to reduce the thickness of display panel, saves display panel
Inner space.
In a first aspect, the embodiment of the invention provides a kind of flexible circuit board, including main part and connect with the main part
The subtest portion connect；
Multiple golden fingers are provided on the main part, the golden finger extends to the main part and the subtest
The cutting part of portion junction, the cutting part is for separating the subtest portion with the flexible circuit board；
The golden finger includes at least a pair of of testing weld pad, one end phase of the testing weld pad far from the subtest portion
Mutually insulation；
At least a pair of of test point is provided in the subtest portion, the test point is electric with corresponding testing weld pad respectively
Connection.
Second aspect, the embodiment of the invention also provides a kind of display panel, including periphery circuit region, the peripheral circuit
Area is provided with main flexible circuit board；
The main flexible circuit board includes main part and multiple first golden fingers for being arranged on the main part, and described the
One golden finger extends to the side that the main flexible circuit board is located at the display panel edge；
First golden finger includes at least a pair of first testing weld pad, and first testing weld pad is far from the display surface
One end mutually insulated of edges of boards edge；
First testing weld pad is used for before disconnecting the cutting part of the main part and subtest portion junction, is electrically connected
It is connected to corresponding test point in the subtest portion.
The embodiment of the present invention is connected main part and subtest portion by cutting part, forms flexible circuit board, should
It is provided with multiple golden fingers on the main part of flexible circuit board, golden finger includes at least a pair of of testing weld pad, in subtest portion
It is provided at least a pair of of test point, golden finger extends to the cutting part of main part Yu subtest portion junction, and survey therein
Test weld disk is electrically connected with corresponding test point；The flexible circuit board may be disposed in display panel, wherein main body section is in display
In panel, segmentaion position can detect each joint (such as main flexible circuit board and auxiliary flexibility in display panel edge, by test point
Between circuit board or IC wafer) junction impedance can be by subtest by cutting part after having detected junction impedance
Portion is separated from flexible circuit board or display panel, both can accurately detect as a result, main flexible circuit board and auxiliary flexible circuit board or
Junction impedance between IC wafer, and the thickness of display panel can be reduced, save the inner space of display panel.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of flexible circuit board provided in an embodiment of the present invention；
Fig. 2 is the amplified structural schematic diagram in a-quadrant in Fig. 1；
Fig. 3 is flexible circuit board provided in an embodiment of the present invention and the structural schematic diagram after binding board binding；
Fig. 4 is the structural schematic diagram provided in an embodiment of the present invention to binding board；
Fig. 5 be flexible circuit board provided in an embodiment of the present invention with after binding board binding after golden finger far from subtest portion
The schematic diagram of the section structure of one end；
Fig. 6 is the amplified another structural schematic diagram in a-quadrant in Fig. 1；
Fig. 7 is the structural schematic diagram of display panel provided in an embodiment of the present invention；
Fig. 8 is the amplified structural schematic diagram of golden finger 220 in Fig. 7；
Fig. 9 is structural schematic diagram of the display panel provided in an embodiment of the present invention before disconnecting subtest portion；
Figure 10 is the amplified structural schematic diagram of B area in Fig. 9；
Figure 11 is that auxiliary flexible circuit board provided in an embodiment of the present invention is tied to the structural schematic diagram on display panel；
Figure 12 is golden finger after auxiliary flexible circuit board binding provided in an embodiment of the present invention far from display panel edge one end
The schematic diagram of the section structure；
Figure 13 is golden finger after auxiliary flexible circuit board binding provided in an embodiment of the present invention far from display panel edge one end
Another the schematic diagram of the section structure.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
With reference to Fig. 1 and Fig. 2, Fig. 1 is a kind of structural schematic diagram of flexible circuit board provided in an embodiment of the present invention；Fig. 2 is
The amplified structural schematic diagram in a-quadrant in Fig. 1.As shown in Figure 1, the flexible circuit board in the present embodiment may include main part 100
With the subtest portion 200 being connect with main part 100.
Wherein, multiple golden fingers 10 are provided on main part 100, in conjunction with Fig. 2, golden finger 10 extend to main part 100 with
The cutting part 20 of 200 junction of subtest portion, cutting part 20 are used for after test, by subtest portion 200 and flexibility
Circuit board separation；
The golden finger 10 includes at least a pair of of testing weld pad 11, one end phase of the testing weld pad 11 far from subtest portion 200
Mutually insulation；
Be provided at least a pair of of test point 21 in subtest portion 200, test point 21 respectively with corresponding testing weld pad 11
Electrical connection.
Illustratively, as shown in figure 3, being tied to above-mentioned flexible electrical in other flexible circuit boards or IC wafer 300
After on the plate of road, multimeter can be used, and select the resistance grade of multimeter, directly detect the resistance between each pair of test point, thus
Detect the junction impedance of testing weld pad joint in golden finger 10.
Specifically, as shown in figure 4, other flexible circuit boards or IC wafer 300 for being tied on flexible circuit board
Including the engagement golden finger 30 being oppositely arranged with the golden finger on flexible circuit board, which includes and flexible circuit
At least a pair of engaging testing weld pad 31 that testing weld pad on plate in golden finger is oppositely arranged.With reference to Fig. 5, by that will be oppositely arranged
Golden finger and engagement golden finger press together, realization other flexible circuit boards or IC wafer 300 are tied to it is soft
On the main part 100 of property circuit board.In addition, the above-mentioned each pair of engagement one end of testing weld pad 31 far from subtest portion is mutually shorted,
So that testing weld pad 11 with engage testing weld pad 31 press after, with multimeter formed resistance detection circuit.By the detection of multimeter
Pen is electrically connected each pair of test point, and reads the numerical value of multimeter, which is junction impedance；After detection, it can break
Cutting part is opened, subtest portion is torn from flexible circuit board.
Flexible circuit board provided in this embodiment is applied in display panel as a result, exposes subtest portion just
Except display panel, i.e., segmentaion position is in display panel edge, after having detected junction impedance, can will be assisted by cutting part
Test department is separated from display panel, both can accurately detect main flexible circuit board and auxiliary flexible circuit board or integrated circuit as a result,
Junction impedance between chip, and the thickness of display panel can be reduced, save the inner space of display panel.
Optionally, with reference to Fig. 2, cutting part 20 may include micro- even point, and subtest portion 200 and main part 100 pass through micro- company
20 connection of point.Connect the interconnecting piece between the similar stamp of point since this is micro-, after having detected junction impedance, it can be easy to
Subtest portion is torn from flexible circuit board.
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 be electrically connected with corresponding testing weld pad.
As shown in fig. 6, the golden finger on flexible circuit board main part of the present invention further includes at least one signal transmission pad
12, optionally, the testing weld pad in a pair of of testing weld pad 11 can be disposed adjacent or testing weld pad between at least one signal is set
Transmit pad 12.
Illustratively, 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 are located at the two sides of a golden finger.At this point, if the junction impedance at two pairs of testing weld pads 11 is both less than or equal to default
Impedance value, then binding is good；As long as if there is junction impedance at a pair of of testing weld pad 11 to be greater than default impedance value, binding compared with
Difference need to be bound again.Therefore, two pairs of testing weld pads are respectively arranged to the two sides of a golden finger, can preferably detect and tie up
Fixed quality.
The embodiment of the invention also provides a kind of display panel, the main flexible circuit board in the display panel can be used above-mentioned
The flexible circuit board that embodiment provides.
With reference to Fig. 7-10, Fig. 7 is the structural schematic diagram of display panel provided in an embodiment of the present invention；Fig. 8 is golden hand in Fig. 7
Refer to 220 amplified structural schematic diagrams；Fig. 9 is knot of the display panel provided in an embodiment of the present invention before disconnecting subtest portion
Structure schematic diagram；Figure 10 is the amplified structural schematic diagram of B area in Fig. 9.As shown in fig. 7, the display panel of the present embodiment includes
Periphery circuit region 1, periphery circuit region 1 are provided with main flexible circuit board 2.
Wherein, main flexible circuit board 2 includes main part 210 and multiple first golden fingers being arranged on main part 210
220, in conjunction with Fig. 8, the first golden finger 220 extends to the side that main flexible circuit board 2 is located at display panel edge 101；
With reference to Fig. 8, the first golden finger includes at least a pair of first testing weld pad 221, and the first testing weld pad 221 is far from display
One end mutually insulated of face plate edge 101；
In conjunction with Fig. 9 and Figure 10, the first testing weld pad 221 is used to disconnect main part 210 and 230 junction of subtest portion
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 panel edge 101 is connected to main part 210.
To sum up, the junction impedance at corresponding first testing weld pad 221 can be detected by test point 231, detecting engagement
After impedance, subtest portion can be separated by cutting part from display panel, both can accurately detect main flexible circuit board as a result,
With the junction impedance between auxiliary flexible circuit board or IC wafer, and the thickness of display panel can be reduced, 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 passes through micro- with main part 210
Even 240 connection of point.Connect the interconnecting piece between the similar stamp of point since this is micro-, after having detected junction impedance, it can hold very much
It changes places and subtest portion 230 tears from display panel.
As shown in figure 11, periphery circuit region 1 further includes auxiliary flexible circuit board 3, in conjunction with Figure 12, is set on auxiliary flexible circuit board 3
It is equipped with the second golden finger, the second golden finger is oppositely arranged with one first golden finger 220；
Second golden finger includes at least a 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 circuit board 2 and auxiliary flexible circuit board 3 are electrically engaged by the first golden finger 220 and the second golden finger；
Each pair of one end of second golden finger far from display panel edge is mutually shorted, to carry out junction impedance inspection to display panel
When survey, after the first testing weld pad 221 and the pressing of the second testing weld pad 331, resistance detection circuit is formed with multimeter.
Optionally, with reference to Figure 12, the second testing weld pad in a pair of second testing weld pad 331 is disposed adjacent, shorting stub 333
It is arranged with 331 same layer of the second testing weld pad.
In addition, as shown in figure 13, the first golden finger 220 and the second golden finger also respectively include at least one letter being oppositely arranged
Number transmission pad 332, the second testing weld pad and signal transmission pad 332 interval in a pair of second testing weld pad 331 are arranged, short
331 different layers of wiring 333 and the second testing weld pad, shorting stub pass through via hole electrical connection a pair second on auxiliary flexible circuit board 3
Testing weld pad 331.It can avoid being connected to the signal transmission pad 332 of display panel viewing area as a result, and pass through shorting stub 333 and the
Two testing weld pads, 331 phase is shorted.
With reference to Figure 10, the first golden finger includes two pair of first testing weld pad 221, and two pair of first testing weld pad 221 distinguishes position
In the both sides of the first golden finger.At this point, if the junction impedance at two pairs of testing weld pads 221 is both less than or is equal to default impedance value,
Then binding is good；As long as binding poor if there is junction impedance at a pair of of testing weld pad 221 to be greater than default impedance value, weight is needed
New binding.Therefore, two pairs of testing weld pads are respectively arranged to the two sides of a golden finger, can preferably detect the good of binding
It is bad.
Display panel provided in an embodiment of the present invention, by the way that the main part of main flexible circuit board is set to display panel
Interior, cutting part is set to display panel edge, and subtest portion is exposed to outside display panel, by detection subtest portion
Impedance between each pair of test point can detect that each joint, i.e., main flexible circuit board and auxiliary flexible circuit board or integrated circuit
Junction impedance between chip, after having detected junction impedance, by cutting part can by subtest portion from flexible circuit board or
It separates on display panel, both can accurately detect between main flexible circuit board and auxiliary flexible circuit board or IC wafer as a result,
Junction impedance, and the thickness of display panel can be reduced, save the inner space of display panel.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (12)
1. a kind of flexible circuit board, which is characterized in that including main part and the subtest portion being connect with the main part；
Multiple golden fingers are provided on the main part, the golden finger extends to the main part and the subtest portion connects
The cutting part at place is connect, the cutting part is for separating the subtest portion with the flexible circuit board；
The golden finger includes at least a pair of of testing weld pad, and the one end of the testing weld pad far from the subtest portion is mutually exhausted
Edge；
At least a pair of of test point is provided in the subtest portion, the test point is electrically connected with corresponding testing weld pad respectively
It connects；Other flexible circuit boards or IC wafer are pressed on the flexible circuit board by the golden finger, to pass through inspection
The resistance between each pair of test point is surveyed, to detect the junction impedance of testing weld pad joint described in the golden finger.
2. flexible circuit board according to claim 1, which is characterized in that the cutting part includes micro- even point, the auxiliary
Test department and the main part pass through micro- even point connection.
3. flexible circuit board according to claim 1, which is characterized in that the test point includes circular metal real point.
4. flexible circuit board according to claim 1, which is characterized in that the test point pass through respectively copper facing cabling with it is right
The testing weld pad electrical connection answered.
5. flexible circuit board according to claim 1, which is characterized in that the golden finger further includes that at least one signal passes
Defeated pad, the testing weld pad in the pair of testing weld pad be disposed adjacent or with signal transmission pad interval setting.
6. flexible circuit board according to claim 1, which is characterized in that the golden finger includes two pairs of testing weld pads, institute
State the two sides that two pairs of testing weld pads are located at a golden finger.
7. a kind of display panel, which is characterized in that including periphery circuit region, the periphery circuit region is provided with main flexible circuit
Plate；
The main flexible circuit board includes main part and multiple first golden fingers for being arranged on the main part, first gold medal
Finger extends to the side that the main flexible circuit board is located at the display panel edge；
First golden finger includes at least a pair of first testing weld pad, and first testing weld pad is far from the display surface edges of boards
One end mutually insulated of edge；
First testing weld pad is used for before disconnecting the cutting part of the main part and subtest portion junction, is electrically connected to
Corresponding test point in the subtest portion；The periphery circuit region further includes auxiliary flexible circuit board, the auxiliary flexible circuitry
Plate is pressed on the main flexible circuit board by first golden finger, by detecting the electricity between each pair of test point
Resistance, to detect the junction impedance of the first testing weld pad joint described in first golden finger.
8. display panel according to claim 7, which is characterized in that the cutting part includes micro- even point, and the auxiliary is surveyed
Examination portion and the main part pass through micro- even point connection.
9. display panel according to claim 7, which is characterized in that be provided with the second gold medal hand on the auxiliary flexible circuit board
Refer to, second golden finger is oppositely arranged with first golden finger；
Second golden finger includes at least a pair of second testing weld pad, second testing weld pad and first testing weld pad
It is oppositely arranged；
The main flexible circuit board and the auxiliary flexible circuit board are connect by first golden finger and the second golden finger electricity
It closes；
Each pair of second testing weld pad is mutually shorted far from the one end at the display panel edge.
10. display panel according to claim 9, which is characterized in that second in the pair of second testing weld pad surveys
Test weld disk is disposed adjacent, and shorting stub and the second testing weld pad same layer are arranged.
11. display panel according to claim 9, which is characterized in that first golden finger and second golden finger
Also respectively include at least one signal transmission pad being oppositely arranged, the second testing weld pad in the pair of second testing weld pad it
Between include that at least one described signal transmits pad, shorting stub and the second testing weld pad different layers, shorting stub passes through via hole
It is electrically connected the pair of second testing weld pad.
12. according to the described in any item display panels of claim 7-10, which is characterized in that first golden finger includes two pairs
First testing weld pad, two pair of first testing weld pad are located 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 CN106658947A (en) | 2017-05-10 |
| CN106658947B true 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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Effective date of registration: 20211029 Address after: No.8, liufangyuan Henglu, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN TIANMA MICRO-ELECTRONICS Co.,Ltd. Patentee after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Patentee after: Tianma Micro-Electronics Co.,Ltd. Address before: Room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai, 200120 Patentee before: SHANGHAI TIANMA AM-OLED Co.,Ltd. Patentee before: Tianma Micro-Electronics Co.,Ltd. |
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