CN1971345A - Flexible circuit board and LCD device - Google Patents
Flexible circuit board and LCD device Download PDFInfo
- Publication number
- CN1971345A CN1971345A CN 200510101752 CN200510101752A CN1971345A CN 1971345 A CN1971345 A CN 1971345A CN 200510101752 CN200510101752 CN 200510101752 CN 200510101752 A CN200510101752 A CN 200510101752A CN 1971345 A CN1971345 A CN 1971345A
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- circuit board
- flexible circuit
- coupling part
- display panels
- main part
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Abstract
The invention relates to a LCD that mainly comprises a liquid crystal display panel and a flexible circuit board which is connected with the edge of the liquid crystal display panel. The flexible circuit board includes a major component and a coupling part. The major component is the circuit transmission part of the flexible circuit board it includes a reinforced branch which is a branched structure extended from the major component. The coupling part and the major component are an integral body and connected by circuit. The flexible circuit board of the LCD is non-disrupted or tearing.
Description
[technical field]
The present invention relates to a kind of flexible circuit board (Flexible Printed Circuit) and a kind of LCD of using this flexible circuit board.
[background technology]
At present, the method that liquid crystal panel is connected to drive IC comprises COG (Chip OnGlass, glass flip chip) technology, TAB (Tape Automatic Bonding, winding engages automatically) technology and COF (Chip On Film, membrane of flip chip) technology.
Wherein, adopt the COG technology drive IC of semiconductor packages form directly can be installed on liquid crystal panel gate line and the data line, thereby electric signal is sent to liquid crystal panel.Drive IC adopts anisotropic conducting film to bond on the liquid crystal panel.
In addition, adopt the TAB technology liquid crystal panel can be directly connected on the printed circuit board (PCB) by winding electric conductor encapsulation (Tape Carrier Package), and drive IC can be installed in the encapsulation of winding electric conductor.Like this, an end of winding electric conductor encapsulation is connected on the display panels, and the other end then is connected on the printed circuit board (PCB).
Along with the continuous development of LCD to lightness, high brightness trend, only adopt winding electric conductor package LC D module, can't obtain reliable pliability, thereby also can adopt the COF technology, be about to drive IC and be incorporated into little spacing flexible circuit board, the mode with similar TAB is engaged on glass substrate or the pcb board again.
Fig. 1 is the schematic perspective view of a kind of LCD of prior art.This LCD 1 comprises a display panels 10 and is used for transmitting to this display panels 10 flexible circuit board 11 of drive signals.
Fig. 2 and Fig. 3 are respectively the front elevation and the side views of this LCD 1.This flexible circuit board 11 comprises that a main part 12 and a junction divide 13.In aggregates and the circuit in this main part 12 and this coupling part 13 communicates.This coupling part 13 can be installed on the edge of this display panels 10, and it comprises a metal wiring layer 131, an insulation course 132 and two identification patterns 14.This metal wiring layer 131 comprises a plurality of plain conductors of parallel arranged.These insulation course 132 parts coat these a plurality of plain conductors, and make these a plurality of plain conductor ends exposed become electrical bond end 133.This identification pattern 14 is positioned at this insulation course 132 both sides, it can be used as the contraposition reference that connects this flexible circuit board 11 and this display panels 1, and the circuit of this flexible circuit board 11 and the circuit of this display panels 10 are complementary, avoid because of missing or the short circuit that misconnection causes and the problem that opens circuit.
But, in this LCD 1, this flexible circuit board 11 is connected in the edge of display panels 10 in conjunction with the TAB technology by application COF technology, in this combination or welding action, the coupling part 13 easy tension power effects of flexible circuit board 11 and tearing or phenomenon of rupture cause electric signal error of transmission or interruption.
[summary of the invention]
Be to solve the problem that flexible circuit board is easily torn or ruptured in the prior art, provide a kind of flexible circuit board that is difficult for tearing or ruptures just real for necessary.
Be to solve the problem that the flexible circuit board of prior art LCD is easily torn or ruptured, provide a kind of and have the LCD of the flexible circuit board that is difficult for tearing or ruptures also in fact for necessary.
A kind of flexible circuit board, it comprises a main part and a junction branch, this main part is the circuit transmission part of this flexible circuit board, it comprises a reinforcement branch, this reinforcement branch is a branched structure that extends from this main part, and this coupling part and circuit in aggregates with this main part communicates.
A kind of LCD, it mainly comprises a display panels and a flexible circuit board, this flexible circuit board is connected in the edge of this display panels.This flexible circuit board comprises a main part and a junction branch, and this main part is the circuit transmission part of this flexible circuit board, and it comprises a reinforcement branch, and this reinforcement branch is a branched structure that extends from this main part.This coupling part and circuit in aggregates with this main part communicates.
When being connected on this display panels by welding or COF in conjunction with TAB technical battery flexible circuit board, flexible circuit board is with the effect of tension power.At this moment; the reinforcement branch of this flexible circuit board just shares this pulling force; alleviate the suffered external force of electrical engagement end of this coupling part; thereby protect the coupling part of this flexible circuit board; prolong the serviceable life of this flexible circuit board; and then, use the quality of the LCD of this flexible circuit board also to be improved.
[description of drawings]
Fig. 1 is the schematic perspective view of prior art LCD.
Fig. 2 is the front elevation of prior art LCD.
Fig. 3 is the side view of prior art LCD.
Fig. 4 is the exploded perspective view of LCD first embodiment of the present invention.
Fig. 5 is the sectional view of Fig. 4 along the V-V direction.
Fig. 6 is the side view of LCD first embodiment of the present invention.
Fig. 7 is the schematic perspective view of LCD first embodiment of the present invention.
Fig. 8 is the front elevation of LCD first embodiment of the present invention.
Fig. 9 is the front elevation of LCD second embodiment of the present invention.
Figure 10 is the front elevation of LCD the 3rd embodiment of the present invention.
Figure 11 is the front elevation of LCD the 4th embodiment of the present invention.
Figure 12 is the front elevation of LCD the 5th embodiment of the present invention.
Figure 13 is the partial enlarged drawing of XIII part among Figure 12.
[embodiment]
Seeing also Fig. 4 and Fig. 5, is respectively the exploded perspective view and the diagrammatic cross-section of LCD first embodiment of the present invention.This LCD 2 comprises a display panels 20 and a flexible circuit board 21, and this flexible circuit board 21 is connected in the edge of this display panels 20.
This flexible circuit board 21 comprises that a main part 22 and a junction divide 23, and the in aggregates and circuit in this main part 22 and this coupling part 23 communicates.This coupling part 23 communicates with these display panels 20 circuit.
This main part 22 comprises two reinforcement branches 221, these two reinforcement branches 221 are two strip insulation branched structures, extend forward its autonomous agent part 22 both sides, and be arranged in parallel with this coupling part 23, and its end portion and this coupling part 23 are fixed in the edge of this display panels 20.When connecting with welding or COF on display panels 20 in conjunction with the TAB technology, the end of these two reinforcement branches 221 keeps concordant with the terminal basic of this coupling part 23.
Seeing also Fig. 6, Fig. 7 and Fig. 8, is respectively side view, schematic perspective view and the front elevation of this LCD 2.This coupling part 23 comprises a metal wiring layer 231, an insulation course 232, two identification patterns 24 and buffer areas 235.This metal wiring layer 231 comprises a plurality of plain conductors of parallel arranged, the one side of these a plurality of plain conductors is coated by this insulation course 232 fully, its another side is then coated by these insulation course 232 parts, and exposed a plurality of plain conductors partly are the electrical bond end 233 of this coupling part 23.This electrical bond end 233 is the ends that electrically contact of this flexible circuit board 21.235 of this buffer areas are positioned on this coupling part 23 of contiguous this main part 22, and it is the stretching region that an arc of curvature length is at least 0.5mm, can itself form by this coupling part 23 of pressing.These 24 of two identification patterns lay respectively at the corner, both sides of this coupling part 23, and it can be used as the contraposition reference of this coupling part 23 and this display panels 20, thereby the circuit of this flexible circuit board 21 and the circuit of this display panels 20 are complementary.
In this LCD 2, do the time spent,, increased the lifting surface area of this flexible circuit board 21, thereby reduced the force intensity that is subjected to of this coupling part 23 with this display panels 20 owing to increased this two reinforcement branches 221 when flexible circuit board 21 is subjected to external force.Though in stressed moment, because the area of this coupling part 23 is big than two reinforcement branches 221, bigger power still can be born in stressed moment in this coupling part 23, but owing to there is a buffer area 235, its bending area extends, this coupling part 23 is effectively cushioned at the stressed of stressed moment, and this external force will be born simultaneously by these two reinforcement branches 221, thereby has reduced the stressed of this coupling part 23, prolongs the serviceable life of this flexible circuit board 21.
Seeing also Fig. 9, is the front elevation of LCD second embodiment of the present invention.This LCD 3 comprises a display panels 30 and a flexible circuit board 31, and this flexible circuit board 31 is connected in the edge of this display panels 30.
This flexible circuit board 31 comprises that a main part 32 and a junction divide 33, and the in aggregates and circuit in this main part 32 and this coupling part 33 communicates.This coupling part 33 communicates with these display panels 30 circuit.
This main part 32 comprises a reinforcement branch 321, this reinforcement branch 321 is strip insulation branched structures, its autonomous agent part 32 middle positions extend forward, and be arranged in parallel with this coupling part 33, and its end portion and this coupling part 33 are fixed in the edge of this display panels 30.When connecting with welding or COF on display panels 30 in conjunction with the TAB technology, the end of this reinforcement branch 321 keeps concordant with the terminal basic of this coupling part 33.
This coupling part 33 comprises two metal wiring layers 331, two insulation courses 332, two identification patterns 34 and two buffer areas 335.These two metal wiring layers 331 comprise a plurality of plain conductors of parallel arranged.These two insulation course 332 parts coat this metal wiring layer 331, make these a plurality of plain conductor ends exposed become two electrical bond ends 333, and this electrical bond end 333 is the ends that electrically contact of this flexible circuit board 31.These two buffer areas 335 are positioned on this coupling part 33 of contiguous this main part 32, and it is the stretching region that two arc of curvature length are at least 0.5mm.These 34 of two identification patterns lay respectively on 33 two corners, this coupling part of contiguous this reinforcement branch 321, it can be used as the contraposition reference of this coupling part 33 and this display panels 30, thereby the circuit of this flexible circuit board 31 and the circuit of this display panels 30 are complementary.
This reinforcement branch 321 and buffering zone 335 have changed coupling part 33 stressing conditions of this flexible circuit board 31, and then reach the purpose of this flexible circuit board 31 of protection.
Figure 10 is the front elevation of LCD the 3rd embodiment of the present invention.This LCD 4 comprises a display panels 40 and a flexible circuit board 41, and this flexible circuit board 41 is connected in this display panels 40 edges.
This flexible circuit board 41 comprises that a main part 42 and a junction divide 43, and the in aggregates and circuit in this main part 42 and this coupling part 43 communicates.This coupling part 43 communicates with these display panels 40 circuit.
This main part 42 comprises two reinforcement branches 421, and these two reinforcement branches 421 are two strip insulation branched structures, and has a convex surface 4211 in its strip branches end.Extend forward the both sides of these two reinforcement branch 421 autonomous agent parts 42, and be arranged in parallel with this coupling part 43, and its end portion and this coupling part 43 are fixed in the edge of this display panels 40.When connecting with welding or COF on display panels in conjunction with the TAB technology, the end of these two reinforcement branches 421 keeps concordant with the terminal basic of this coupling part 43.
This coupling part 43 comprises a metal wiring layer 431, an insulation course 432, two identification patterns 44 and buffer areas 435.This metal wiring layer 431 comprises a plurality of plain conductors of parallel arranged.These insulation course 432 parts coat a plurality of plain conductors of this metal wiring layer 431, and make these a plurality of plain conductor ends exposed become an electrical bond end 433, and this electrical bond end 433 is the ends that electrically contact of this flexible circuit board 41.435 of this buffer areas are positioned on this coupling part 43 of contiguous this main part 42, and it is the stretching region that an arc of curvature length is at least 0.5mm.These 44 of two identification patterns are identified in respectively on this corner, insulation course 432 both sides, and it can be used as the contraposition reference of this coupling part 43 and this display panels 40, thereby the circuit of this flexible circuit board 41 and the circuit of this display panels 40 are complementary.
In the present embodiment, this convex surface 4211 has increased the lifting surface area of this reinforcement branch 421, reduces the force intensity that is subjected to of this reinforcement branch 421.When these flexible circuit board 41 suffered external force increased, this reinforcement branch 421 still can bear, thus this coupling part 43 of better protection.
Figure 11 is the front elevation of four embodiment of the invention LCD.This LCD 5 comprises a display panels 50 and a flexible circuit board 51, and this flexible circuit board 51 is connected in this display panels 50 edges.
This flexible circuit board 51 comprises that a main part 52 and a junction divide 53, and the in aggregates and circuit in this main part 52 and this coupling part 53 communicates, and this coupling part 53 communicates with these display panels 50 circuit.
This main part 52 comprises two reinforcement branches 521 and two identification patterns 54, these two reinforcement branches 521 are two strip insulation branched structures, extend forward the both sides of its autonomous agent part 52, and be arranged in parallel with this coupling part 53, and its end portion and this coupling part 53 are fixed in the edge of this display panels 50.When connecting with welding or COF on display panels 50 in conjunction with the TAB technology, the end of these two reinforcement branches 521 keeps concordant with the terminal basic of this coupling part 53.These two identification patterns 54 lay respectively at the end of these two reinforcement branches 521, and it can be used as the contraposition reference of this coupling part 53 and this display panels 50, and then the circuit of this flexible circuit board 51 and the circuit of this display panels 50 are complementary.
This coupling part 53 comprises a metal wiring layer 531, an insulation course 532 and a buffer area 535.This metal wiring layer 531 comprises a plurality of plain conductors of parallel arranged.This insulation course 532 coats these a plurality of plain conductors, makes these a plurality of plain conductor ends exposed become an electrical bond end 533, and this electrical bond end 533 is the ends that electrically contact of this flexible circuit board 51.This buffer area 535 is positioned on this coupling part 53 of contiguous this main part 52, and it is the stretching region that an arc of curvature length is at least 0.5mm.
Consulting Figure 12, is the front elevation of LCD the 5th embodiment of the present invention.This LCD 6 comprises a display panels 60 and a flexible circuit board 61, and this flexible circuit board 61 is connected in the edge of this display panels 60.
This flexible circuit board 61 comprises that a main part 62 and a junction divide 63, and the in aggregates and circuit in this main part 62 and this coupling part 63 communicates, and this coupling part 63 communicates with these display panels 60 circuit.
This main part 62 comprises two reinforcement branches 621, and these two reinforcement branches 621 are two strip insulation branched structures.Extend forward the both sides of this reinforcement branch autonomous agent part 62, and be arranged in parallel with this coupling part 63, and its end portion and this coupling part 63 are fixed in the edge of this display panels 60.When connecting with welding or COF on display panels 60 in conjunction with the TAB technology, the end of these two reinforcement branches 621 keeps concordant with the terminal basic of this coupling part 63.
This coupling part 63 comprises a metal wiring layer 631, an insulation course 632, two identified areas 64 and buffer areas 635.This metal wiring layer 631 comprises a plurality of plain conductors of parallel arranged, these insulation course 632 parts coat a plurality of plain conductors of this metal wiring layer 631, make these a plurality of plain conductor ends exposed become an electrical bond end 633, this electrical bond end 633 is the ends that electrically contact of this flexible circuit board 61.635 of this buffer areas are positioned on this coupling part 63 of contiguous this main part 62, and it is the stretching region that an arc of curvature length is at least 0.5mm.
See also Figure 13, it is the partial enlarged drawing of XIII part among Figure 12, there is one first concave surface 6211 at a side place in these reinforcement branch 621 close these coupling parts 63, and all have one second concave surface 6321 in these 621 both sides, coupling part, this second concave surface 6321 just with first concave surface, 6211 relative formation one identified areas 64 of this reinforcement branch 621.This identified areas 64 can be used as the contraposition reference of this coupling part 63 and this display panels 60, thereby the circuit of this flexible circuit board 61 and the circuit of this display panels 60 are complementary.
In each embodiment of above the present invention, its flexible circuit board can be individual layer single-sided structure, individual layer bilateral structure or double-decker.A plurality of plain conductors of the metal wiring layer of this flexible circuit board can be the Copper Foil lead or are the lead of material with the copper beryllium alloy.Wherein, the individual layer single-sided structure is two faces that coated this metal wiring layer by this insulation course, but its electrical bond end is positioned at the same one side of this metal wiring layer; The individual layer bilateral structure then is that this electrical bond end lays respectively on two faces of this metal wiring layer; And bilateral structure is to have two metal wiring layers that are communicated with by a via hole.
Claims (10)
1. flexible circuit board, it comprises a main part and a junction branch, this main part is the circuit transmission part of this flexible circuit board, this coupling part and circuit in aggregates with this main part communicates, it is characterized in that: this main part comprises a reinforcement branch, and this reinforcement branch is a branched structure that extends from this main part.
2. flexible circuit board as claimed in claim 1, it is characterized in that: this coupling part also comprises a metal wiring layer, an insulation course and an identification pattern, this metal wiring layer comprises a plurality of plain conductors of parallel arranged, this insulation course partly coats a plurality of plain conductors of this metal wiring layer, and make these a plurality of plain conductors expose to become to electrically contact end, this identification pattern is for connecting the contraposition reference of this flexible circuit board and this display panels.
3. flexible circuit board as claimed in claim 2 is characterized in that: this identification pattern can be positioned in this reinforcement branch.
4. flexible circuit board as claimed in claim 2 is characterized in that: this identification pattern can be an identified areas, and this identified areas is made of two concave surfaces of corresponding setting on this reinforcement branch and this coupling part.
5. flexible circuit board as claimed in claim 1 is characterized in that: this reinforcement branch can be a strip structure.
6. flexible circuit board as claimed in claim 1 is characterized in that: the end of this reinforcement branch keeps concordant substantially with the end of this coupling part.
7. soft electroplax as claimed in claim 1 is characterized in that: this reinforcement branch and this coupling part are arranged in parallel.
8. flexible circuit board as claimed in claim 1 is characterized in that: this coupling part also comprises a buffer area.
9. flexible circuit board as claimed in claim 8 is characterized in that: the arc of curvature length of this buffer area is at least 0.5mm.
10 1 kinds of LCD, it comprises a display panels and a flexible circuit board, this flexible circuit board is connected the edge of this display panels, and this flexible circuit board is any described flexible circuit board in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510101752A CN1971345B (en) | 2005-11-24 | 2005-11-24 | Flexible circuit board and LCD device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510101752A CN1971345B (en) | 2005-11-24 | 2005-11-24 | Flexible circuit board and LCD device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1971345A true CN1971345A (en) | 2007-05-30 |
| CN1971345B CN1971345B (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510101752A Active CN1971345B (en) | 2005-11-24 | 2005-11-24 | Flexible circuit board and LCD device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1971345B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876759B (en) * | 2009-11-03 | 2012-11-07 | 友达光电（苏州）有限公司 | Display module and fixing mechanism thereof |
| CN103197448A (en) * | 2013-01-08 | 2013-07-10 | 友达光电股份有限公司 | Transmission substrate, display device using the same, and method for assembling display device |
| WO2017201837A1 (en) * | 2016-05-24 | 2017-11-30 | 武汉华星光电技术有限公司 | Liquid-crystal display panel and thin-film transistor array substrate thereof |
| CN108646464A (en) * | 2018-04-19 | 2018-10-12 | Oppo广东移动通信有限公司 | Backlight, display screen module and display device |
| CN110471226A (en) * | 2019-08-01 | 2019-11-19 | 深圳市华星光电技术有限公司 | Flip chip and display device |
| CN110491281A (en) * | 2019-08-09 | 2019-11-22 | 深圳市华星光电技术有限公司 | Flip chip component and display panel assembly |
| CN110557883A (en) * | 2018-05-30 | 2019-12-10 | 三菱电机株式会社 | Electro-optical device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3642263B2 (en) * | 2000-05-23 | 2005-04-27 | セイコーエプソン株式会社 | Liquid crystal device and electronic device |
-
2005
- 2005-11-24 CN CN200510101752A patent/CN1971345B/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876759B (en) * | 2009-11-03 | 2012-11-07 | 友达光电（苏州）有限公司 | Display module and fixing mechanism thereof |
| CN103197448A (en) * | 2013-01-08 | 2013-07-10 | 友达光电股份有限公司 | Transmission substrate, display device using the same, and method for assembling display device |
| TWI490601B (en) * | 2013-01-08 | 2015-07-01 | Au Optronics Corp | Transmitting substrate and display device using the same, and method for assembling the display device |
| CN103197448B (en) * | 2013-01-08 | 2015-07-08 | 友达光电股份有限公司 | Transmission substrate, display device using the same, and method for assembling display device |
| WO2017201837A1 (en) * | 2016-05-24 | 2017-11-30 | 武汉华星光电技术有限公司 | Liquid-crystal display panel and thin-film transistor array substrate thereof |
| US10191313B2 (en) | 2016-05-24 | 2019-01-29 | Wuhan China Star Optoelectronics Technology Co., Ltd | Liquid crystal panel and thin film transistor array substrate thereof |
| CN108646464A (en) * | 2018-04-19 | 2018-10-12 | Oppo广东移动通信有限公司 | Backlight, display screen module and display device |
| CN108646464B (en) * | 2018-04-19 | 2022-02-18 | Oppo广东移动通信有限公司 | Backlight source, display screen module and display device |
| CN110557883A (en) * | 2018-05-30 | 2019-12-10 | 三菱电机株式会社 | Electro-optical device |
| CN110471226A (en) * | 2019-08-01 | 2019-11-19 | 深圳市华星光电技术有限公司 | Flip chip and display device |
| CN110491281A (en) * | 2019-08-09 | 2019-11-22 | 深圳市华星光电技术有限公司 | Flip chip component and display panel assembly |
| WO2021027076A1 (en) * | 2019-08-09 | 2021-02-18 | Tcl华星光电技术有限公司 | Chip on film assembly and display panel assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1971345B (en) | 2010-05-12 |
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