CN1645985A - Electronic module, device therwith and verifying method for press connection thereon - Google Patents
Electronic module, device therwith and verifying method for press connection thereon Download PDFInfo
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- CN1645985A CN1645985A CN 200510004759 CN200510004759A CN1645985A CN 1645985 A CN1645985 A CN 1645985A CN 200510004759 CN200510004759 CN 200510004759 CN 200510004759 A CN200510004759 A CN 200510004759A CN 1645985 A CN1645985 A CN 1645985A
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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- Electric Connection Of Electric Components To Printed Circuits (AREA)
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Abstract
The invention provides an electronic module which has a structure that enables quantitative assessment and management regarding with whether wiring terminals between an IC or flexible wiring board and a transparent board are connected firmly by pressure bonding or not, an electronic device equipped with the electronic module, and a method for checking heat pressure bonding connection in the electronic module.The minimum number of effective conductive particles contained in an ACF is checked which is bonded by pressure between dummy terminals and a transparent board in the electronic module. If the above minimum number is larger than the minimum number of effective conductive particles contained in connection terminals , which are bonded by pressure as the ACF in the electronic module, the electronic module is selected as one in which the ACF is in a state of fine pressure bonding connection.
Description
Technical field
The present invention relates to the crimping of electronic module, be specifically related to: the electronic module of the structure of the connection status that for example being provided with can quantitative assessment, management is obtained by the thermo-compressed between the cloth line terminals of IC or flexible printed circuit board and transparency carrier, the device of this electronic module is housed, and the confirmation method of thermo-compressed on the electronic module.
Background technology
Along with popularizing of portable phone and portable information terminating machine (PDA) etc., requiring has more precise image Presentation Function, can realize the display floater of slim and low consumpting power.
As the display floater that satisfies above-mentioned requirements, most of in the past products have adopted display panels, but in recent years, adopted the display floater that is made of the organic EL (electroluminescence) that has as the characteristic of self-luminous display spare in portioned product, they receive much concern as display floater of future generation.
In above-mentioned display floater, normally between the cloth line terminals of IC and transparency carrier (glass substrate) or flexible printed circuit board and transparency carrier (glass substrate) by containing the anisotropic conductive film (ACF of conducting particles; Anisotropic Conductive Film: anisotropic conductive film) mediate and connect with thermo-compressed.
Above-mentioned ACF makes many conducting particless be dispersed in therebetween a kind of film in thermoplasticity or heat cured resin molding, thermo-compressed is that to be crushed with the some in the above-mentioned conducting particles be condition, between relative thirty years of age terminal or electrode, connect by this conducting particles that is crushed, express the conductivity of single direction, so, between terminal or electrode electric and mechanically be connected.
Therefore, ACF is applicable to and will makes the disposable occasion that connects simultaneously between a plurality of terminals or the electrode.
Fig. 2 represents with the IC of ACF thermo-compressed and the structure of the splicing ear portion between transparency carrier.Splicing ear portion shown in Figure 2 is the situation that faces down and be connected with the splicing ear (projection) 3 of IC1 by ACF7 at the transparency carrier 2 that is provided with transparency electrode 4 and metal line 8.
In the splicing ear portion of said structure, because opaque metal line 8 is arranged in the outside of pressure contact portion, can not this pressure contact portion of Direct observation from appearance, be difficult to be included in methods such as conducting particles number among the ACF7 and whether reliably confirm thermo-compressed with measurement.
To this, open in the flat 11-125837 communique (to call patent documentation 1 in the following text) the spy, disclosing can be from the liquid-crystal apparatus of the non-crimping face perspective of glass substrate.
Fig. 1 represents to be disclosed in the back view of the splicing ear portion of liquid-crystal apparatus in the above-mentioned patent documentation 1 and same electronic module.Among Fig. 1, the false terminals in 2 places (projection) 5 are set at the both ends of the A of thermo-compressed portion,, around false terminal 5, metal film 6 are set and replace metal line 8 at this place.
The profile of the false portion of terminal in Fig. 3 presentation graphs 1.As shown in Figure 3, in false portion of terminal, with Fig. 2 more as can be known owing to be in the state that does not have opaque metal line 8 in transparency carrier 2 one sides, can be from the non-crimping face perspective thermo-compressed portion of transparency carrier 2, can Direct observation, confirm the situation that the conducting particles of the ACF on the false terminal 5 crushes.
, in above-mentioned display floater, because each pixel of display panels is voltage driven type basically, the interelectrode resistance that is connected of sides such as transparency carrier and flexible printed circuit board is regarded as not having much problems.In other words, in liquid crystal panel shows,, image is shown that the influence degree of bringing is smaller even above-mentioned two interelectrode connection resistance have increase slightly or deviation is arranged slightly.
On the other hand, in the organic EL display panel of being paid close attention in recent years, its display pixel is a current drive-type, and the luminosity of pixel also has the electric current dependence that roughly is directly proportional with drive current.Particularly in passive drive type EL display floater, different with liquid crystal, owing to flow through bigger electric current on each element, thereby the cloth line resistance of cathode side is with to be connected the situation that resistance goes wrong more.
Therefore, in above-mentioned thermo-compressed, require to form electrical connection fully.
Moreover, in recent years, the remarkable thin spaceization of splicing ear when IC or flexible printed circuit board etc. are carried out thermo-compressed with transparency carrier, this requirement has more reliable thermo-compressed.
Thereby, about the crimped status of splicing ear portion, not only want qualitative management, and quantitative evaluation, the necessity of management has also increased.
But in above-mentioned patent documentation 1, the management of the crimped status that is produced by the situation that crushes of conducting particles etc. only is subject to the qualitative judgement by Visual Confirmation.That is in above-mentioned citing document 1, the area of relevant false terminal is without any record, in addition, also do not disclose about the administrative standard of the number of the conducting particles that crushes.
Summary of the invention
The present invention be directed to the invention that above-mentioned problem has been done, its problem that will solve provides: but have quantitative assessment, an electronic module of structure that whether IC in the line of managing production or flexible printed circuit board etc. and the thermo-compressed of the cloth line terminals of transparency carrier reliably are connected, the electronic installation of this electronic module is housed, and the confirmation method of the thermo-compressed in the electronic module.
Preferably on transparency carrier and electronic component, have at least 1 group to be the electronic module of realizing being electrically connected by anisotropic conductive film in a plurality of splicing ears of setting respectively in order to the electronic module of the present invention that solves above-mentioned problem, it is characterized in that: be provided with at least 1 place of described electronic component from disconnected of described transparency carrier can have an X-rayed false terminal, choose according to the conducting particles number of the above-mentioned anisotropic conductive film that between described false terminal and transparency carrier, is crimped.
In addition, relate to preferably about one: have at least 1 group to be the electronic module of realizing being electrically connected by anisotropic conductive film in a plurality of splicing ears that on transparency carrier and electronic component, are provided with respectively in order to the confirmation method that solves the thermo-compressed in the electronic module of the present invention that above-mentioned problem does, be provided with at least 1 place of above-mentioned electronic component from disconnected of above-mentioned transparency carrier and can have an X-rayed false terminal, confirm crimped status according to the conducting particles number of the above-mentioned anisotropic conductive film that is crimped between above-mentioned terminal and the transparency carrier.
Description of drawings
Fig. 1 is the back view of the splicing ear portion of electronic module.
Fig. 2 is illustrated in the IC of ACF thermo-compressed and the profile of the splicing ear bilge construction between the transparency carrier.
Fig. 3 is the profile of false portion of terminal among Fig. 1.
Fig. 4 is the figure in order to the effective crimping width between explanation cloth line terminals.
Fig. 5 is the scatter chart of the measurement result of the effective conducting particles number of expression.
Embodiment
Be described in more detail with regard to most preferred embodiment of the present invention with reference to the accompanying drawings.
The basic structure of electronic module of the present invention is identical with the structure as shown in the prior art of Fig. 1.That is, in the electronic module shown in Figure 1, when the projection 3 of the metal line (not shown) that will be provided with by predetermined figure the transparency electrode on the transparency electrode 24 and a plurality of IC1 of being provided with corresponding to above-mentioned metal line is connected, form false terminal 5 at the both ends of above-mentioned a plurality of projections 3 with the connection of not connecting up of the above-mentioned metal line of metal film 6 replacements.
Then, promptly shown in Figure 3 as the profile of the false portion of terminal among above-mentioned Fig. 1, because the false portion of terminal among above-mentioned Fig. 1 does not have opaque metal line 8, can be from disconnected (non-crimping face) perspective ACF7 of transparency carrier 2.
Therefore, in the electronic module of the present invention, can observe directly the pressure contact portion between false terminal 5 and the transparency carrier 1 from the outside, and can adopt based on the statistical method of the electrical property of the thermo-compressed by ACF7 and manage crimped status quantitatively.
Moreover above-mentioned IC also can be replaced as flexible printed circuit board and make identical structure, and said electronic component among the present invention means the general name of IC, flexible printed circuit board etc.
Thereby the crimping between the cloth line terminals of transparency carrier and flexible printed circuit board also can be made the structure identical with the situation of above-mentioned IC, can manage crimped status quantitatively.
In passing through the connection of ACF, whether its connection status well depends on the effective conducting particles number in the conducting particles that is included in this ACF.So-called effectively conducting particles as above-mentioned citing document 1 is disclosed, refers to and can crush the conducting particles that situation is confirmed by observation.
But, in fact, because the skew of the crimping between the cloth line terminals, for example, the various reasons of the deviation of the surperficial convex-concave of the fluctuation of the reducing of the effective crimping width W that is caused by the crimping skew of splicing ear shown in Figure 4 (projection) 3 and transparency electrode 4, ACF quality, the width difference of metal electrode, projection etc., its number can reduce.
The measurement of above-mentioned conducting particles number is the same as before, can carry out with microscopic examination, in addition, also can adopt the automatic mode realized by ccd video camera etc.
Fig. 5 is the distribution curve that the false portion of terminal that is illustrated in the non-defective unit electronic module can be confirmed the measurement result of effective conducting particles number of crushing.This distribution curve provides is that projection is of a size of wide 40 μ m * length 90 μ m, the routine data when width of transparent electrode is 40 μ m in the electronic module shown in Figure 1.
Can ignore the various reasons that above-mentioned effective conducting particles is reduced, in false portion of terminal by crimping under the state of design load approximate desired, effectively conducting particles is counted the distribution curve shown in (a) in the pie graph 5, and each projection on average is 29.8, and standard deviation is 2.10.
In fact, for all the foregoing reasons, the conducting particles number becomes the state of minimizing.
(b) among Fig. 5 and (c) distribution curve of actual value of the effective conducting particles number of expression.In the distribution curve shown in Fig. 5 (b), effectively the conducting particles number is average 19.5 of each projection, and in addition, in the distribution curve shown in Fig. 5 (c), effectively the conducting particles number is average 10.1 of each projection.
Below, the conducting particles number that above-mentioned each projection of budgetary estimate is essential.
For example, need at anode under the situation of maximum current 18mA, the minimum current value of each conducting particles in the product specification is 10mA, if there are minimum 2 effective conducting particless promptly enough between 1 pair of splicing ear.
In addition, for example, from as can be known, be about 1/2 by the deterioration maximum of the current value of the aging conducting particles that causes in the data of 80 ℃, 500 hours environment accelerated tests of humidity 80% etc.
Thereby, if consider so aging, then when crimping, just minimum between the 1 pair of splicing ear have 4 effective conducting particless enough.
In the false portion of terminal of the distribution curve of representing above-mentioned Fig. 5 (c), the value of (mean value-6 σ) is 4.4 of each projections, and this value is above several 4 of the MIN effective conducting particles that has comprised above-mentioned aging action.
In addition, because the value of (mean value+6 σ) is 15.8 of each projections,, we can say that then satisfying as essential conducting particles number between 1 pair of above-mentioned splicing ear is 4 requirement if arbitrarily effective conducting particles number of projection is more than 16.
As known from the above, in the projection of above-mentioned size, the minimum number of the effective conducting particles on the false portion of terminal is defined as 16.
As mentioned above, if the minimum number of effective conducting particles number of the ACF that is crimped between false terminal and above-mentioned transparency carrier (above-mentioned situation is 16) is not less than the essential minimum number (above-mentioned situation is 4) of the effective conducting particles number on the splicing ear that is crimped under the identical conditions in this electronic module, we can say that then the crimped status that the ACF by electronic module obtains is good, just can statistical ground, manage crimped status quantitatively.
Moreover because the numerical value of above-mentioned statistical calculated example changes with the kind of the kind of terminal sizes, ACF, crimping condition, substrate etc., effectively the conducting particles number must be determined by each type.
Among the present invention, every row splicing ear is preferably established the above above-mentioned false terminal in 2 places.When effective conducting particles at 1 place did not reach essential minimum number, the crimped status between the cloth line terminals was insufficient, thereby this electronic module is judged to be defective products.
The situation of this electronic module being sent again back to crimping process is also arranged, repeat same operation, until the state that reaches the selection standard that satisfies above-mentioned effective conducting particles number.
In addition, when above-mentioned false terminal and splicing ear had area identical (size), it was measured, the processing in calculatings is easy, estimated, made things convenient in the management, reproducibility is superior.At least, with the length of above-mentioned splicing ear and wide in a side be all mutually.
Having, is the situation of different size even make the area of false terminal in the restriction owing to the layout of splicing ear etc. again, also can utilize the correlation of obtaining in advance when measuring, thereby carry out suitable evaluation with method same as described above.
According to the present invention,, can provide the various electronic installations that to realize display device that rate of finished products, reliability are improved etc. by the electronic module that the connection crimped status that carries between above-mentioned cloth line terminals has been identified.
Claims (14)
1. electronic module, at least 1 group in a plurality of splicing ears that are provided with respectively on its transparency carrier and the electronic component is electrically connected by anisotropic conductive film, it is characterized in that:
At least 1 place on described electronic component, setting can be from the false terminal of disconnected perspective of described transparency carrier, and this electronic module is according to obtaining after the conducting particles number of the described anisotropic conductive film that is crimped between described false terminal and transparency carrier is chosen.
2. electronic module as claimed in claim 1 is characterized in that: described electronic component is a semiconductor integrated circuit, and its splicing ear is a projection.
3. electronic module as claimed in claim 1 is characterized in that: described electronic component is a flexible printed circuit board.
4. as any described electronic module in the claim 1 to 3, it is characterized in that: the length of described false terminal is identical with at least one side in the width with the length of described splicing ear with width.
5. as any described electronic module in the claim 1 to 3, it is characterized in that: the foundation of selection is, the minimum number of effective conducting particles of the anisotropic conductive film that is crimped between described false terminal and described transparency carrier is not less than the essential minimum number of the effective conducting particles number on the splicing ear that is crimped in this electronic module under identical conditions.
6. electronic module as claimed in claim 4, it is characterized in that: the foundation of selection is, the minimum number of effective conducting particles of the anisotropic conductive film that is crimped between described false terminal and described transparency carrier is not less than the essential minimum number of the effective conducting particles number on the splicing ear that is crimped in this electronic module under identical conditions.
7. one kind is equipped with the electronic module electronic installation, it is characterized in that: at least 1 group in a plurality of splicing ears that are provided with respectively on transparency carrier and electronic component in this electronic module is electrically connected by anisotropic conductive film, and being provided with at least 1 place of described electronic component can be from the false terminal of disconnected perspective of described transparency carrier, this electronic module be according to be crimped between described false terminal and the transparency carrier described each done to obtain after the selection to the conducting particles number of different conducting film.
8. electronic installation as claimed in claim 7 is characterized in that: described electronic component is a semiconductor integrated circuit, and its splicing ear is a projection.
9. electronic installation as claimed in claim 7 is characterized in that: described electronic component is a flexible printed circuit board.
10. as any described electronic installation in the claim 7 to 9, it is characterized in that: the length of described false terminal and width equate with the length of described splicing ear and at least one side in the width.
11. as any described electronic installation in the claim 7 to 9, it is characterized in that: the foundation of selection is, the minimum number of effective conducting particles of the anisotropic conductive film that is crimped between described false terminal and described transparency carrier is not less than the essential minimum number of the effective conducting particles number on the splicing ear that is crimped in this electronic module under identical conditions.
12. electronic installation as claimed in claim 10, it is characterized in that: the foundation of selection is, the minimum number of effective conducting particles of the anisotropic conductive film that is crimped between described false terminal and described transparency carrier is not less than the essential minimum number of the effective conducting particles number on the splicing ear that is crimped in this electronic module under identical conditions.
13. the confirmation method of crimping on the electronic module is characterized in that:
For the electronic module of at least 1 group in a plurality of splicing ears that are provided with respectively on transparency carrier and the electronic component by the anisotropic conductive film electrical connection,
Be provided with at least 1 place of described electronic component and can confirm crimped status according to the conducting particles number of the described anisotropic conductive film that between described false terminal and transparency carrier, is crimped from the false terminal of disconnected perspective of described transparency carrier.
14. the confirmation method of crimping on the electronic module as claimed in claim 13, it is characterized in that: the essential minimum number of the conducting particles number in the minimum number of the conducting particles number of the anisotropic conductive film that will be crimped between described false terminal and described transparency carrier and this electronic module on the splicing ear of crimping under the identical conditions compares, thereby confirms crimped status.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12759/2004 | 2004-01-21 | ||
| JP2004012759A JP2005209767A (en) | 2004-01-21 | 2004-01-21 | Electronic module, electronic device equipped therewith, and method for checking pressure bonding connection in electronic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1645985A true CN1645985A (en) | 2005-07-27 |
Family
ID=34878996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510004759 Pending CN1645985A (en) | 2004-01-21 | 2005-01-21 | Electronic module, device therwith and verifying method for press connection thereon |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2005209767A (en) |
| KR (1) | KR20050076689A (en) |
| CN (1) | CN1645985A (en) |
| TW (1) | TW200526094A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713875B (en) * | 2008-10-07 | 2011-10-12 | 元太科技工业股份有限公司 | Flexible display panel |
| CN104200767A (en) * | 2014-09-18 | 2014-12-10 | 南京中电熊猫液晶显示科技有限公司 | Array substrate, display device and detection method of display device |
| CN105161048A (en) * | 2015-10-27 | 2015-12-16 | 京东方科技集团股份有限公司 | Circuit board and display device |
| CN108598014A (en) * | 2018-05-30 | 2018-09-28 | 英特尔产品（成都）有限公司 | Method and apparatus for failure type identification |
| CN111512707A (en) * | 2017-12-22 | 2020-08-07 | 华为技术有限公司 | Flexible circuit on board anisotropic conductive adhesive interconnect |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4925405B2 (en) * | 2005-10-03 | 2012-04-25 | 旭化成イーマテリアルズ株式会社 | Method for manufacturing connection structure |
| JP5370694B2 (en) * | 2011-03-11 | 2013-12-18 | デクセリアルズ株式会社 | Connection structure |
| JP2019179695A (en) * | 2018-03-30 | 2019-10-17 | 株式会社ジャパンディスプレイ | Organic el display and method for manufacturing organic el display |
-
2004
- 2004-01-21 JP JP2004012759A patent/JP2005209767A/en active Pending
- 2004-09-10 TW TW93127573A patent/TW200526094A/en unknown
-
2005
- 2005-01-20 KR KR1020050005310A patent/KR20050076689A/en not_active Application Discontinuation
- 2005-01-21 CN CN 200510004759 patent/CN1645985A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713875B (en) * | 2008-10-07 | 2011-10-12 | 元太科技工业股份有限公司 | Flexible display panel |
| CN104200767A (en) * | 2014-09-18 | 2014-12-10 | 南京中电熊猫液晶显示科技有限公司 | Array substrate, display device and detection method of display device |
| CN104200767B (en) * | 2014-09-18 | 2017-10-31 | 南京中电熊猫液晶显示科技有限公司 | Array base palte, display device and its detection method |
| CN105161048A (en) * | 2015-10-27 | 2015-12-16 | 京东方科技集团股份有限公司 | Circuit board and display device |
| CN105161048B (en) * | 2015-10-27 | 2018-01-09 | 京东方科技集团股份有限公司 | A kind of circuit board and display device |
| US10244620B2 (en) | 2015-10-27 | 2019-03-26 | Boe Technology Group Co., Ltd. | Circuit board and display device |
| CN111512707A (en) * | 2017-12-22 | 2020-08-07 | 华为技术有限公司 | Flexible circuit on board anisotropic conductive adhesive interconnect |
| US11259414B2 (en) | 2017-12-22 | 2022-02-22 | Huawei Technologies Co., Ltd. | Flex on board anisotropic conductive adhesive interconnection |
| CN108598014A (en) * | 2018-05-30 | 2018-09-28 | 英特尔产品（成都）有限公司 | Method and apparatus for failure type identification |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20050076689A (en) | 2005-07-26 |
| TW200526094A (en) | 2005-08-01 |
| JP2005209767A (en) | 2005-08-04 |
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