CN1782786A - Liquid crystal display and its soft circuit board - Google Patents
Liquid crystal display and its soft circuit board Download PDFInfo
- Publication number
- CN1782786A CN1782786A CN 200410077226 CN200410077226A CN1782786A CN 1782786 A CN1782786 A CN 1782786A CN 200410077226 CN200410077226 CN 200410077226 CN 200410077226 A CN200410077226 A CN 200410077226A CN 1782786 A CN1782786 A CN 1782786A
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- conductive pattern
- circuit board
- flexible circuit
- liquid crystal
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Abstract
The present invention relates to a kind of soft circuit board, which has input side conducting pattern with average width smaller than the maximum width, output side conducting pattern with average width smaller than the maximum width, input side conducting pattern with closely set smaller width part and greater width part, and output side conducting pattern with closely set smaller width part and greater width part. Under the condition of the same width, the soft circuit board of the present invention has even great capacity of transmitted signal compared with available technology. The LCD with the soft circuit board of the present invention is light and thin.
Description
[technical field]
The present invention relates to a kind of flexible circuit board (Flexible Circuit Board) and adopt this flexible circuit board LCD (Liquid Crystal Display, LCD).
[background technology]
Usually, LCD is by applying voltage changing Liquid Crystal Molecules Alignment to liquid crystal molecule, thereby the light by liquid crystal layer is modulated.According to the difference of type of drive, LCD is divided into active array type and passive matrix.The TFT-LCD that drives with TFT (Thin Film Transistor, thin film transistor (TFT)) has simple relatively circuit, and widespread use in counter.
General TFT-LCD comprises liquid crystal panel, is arranged on the backlight module of liquid crystal panel rear surface, is arranged on source electrode portion and grid part on the liquid crystal panel.This source electrode portion comprises and is used to apply the source drive IC of view data with display image that this gate pole part comprises the gate drive IC that is used to apply the gate signal.
The method that liquid crystal panel is connected to source drive IC and gate driving IC is divided into COG (Chip On Glass, chip is positioned on glass) type and TAB (Tape Automatic Bonding, band bonds automatically) type.According to the COG type, the drive IC of semiconductor packages form directly is installed to the gate district and the data field of liquid crystal panel, and so that electric signal is sent to liquid crystal panel, drive IC adopts anisotropic conductive film, and is bonded to liquid crystal panel.According to the TAB type, liquid crystal panel is connected directly on the printed circuit board (PCB) by adopting band electric conductor encapsulation (Tape CarrierPackage), and drive IC is installed on the band electric conductor.One end of band electric conductor encapsulation is connected on the liquid crystal panel, and the other end of band electric conductor encapsulation is connected on the printed circuit board (PCB).The incoming line of electric conductor encapsulation is by welding or adopt anisotropic conductive film to be connected on the lead-out terminal (Output Pad) of printed circuit board (PCB).
In recent years, LCD develops to lightening direction gradually.Especially when liquid crystal display applications is in hand-held computer, the weight of LCD is unusual important parameters.Because band electric conductor encapsulation pliability (Flexibility) is good inadequately, causes it to be not suitable for being applied to lightening LCD, therefore, flexible circuit board is applied to LCD.
Fig. 1 is a kind of synoptic diagram of prior art flexible circuit board.Fig. 2 is the fragmentary cross-sectional view that adopts the LCD of prior art flexible circuit board.See also 1 figure and Fig. 2, flexible circuit board 1 comprises substrate 10, input side conductive pattern 120, outgoing side conductive pattern 140 and welding resin layer 16.This substrate 10 comprises the printed circuit board (PCB) bonding part 12 and the liquid crystal panel bonding part 14 that is used to be connected liquid crystal panel 11 that is used to connect printed circuit board (PCB) 130, and this welding resin layer 16 is formed between this printed circuit board (PCB) bonding part 12 and the liquid crystal panel bonding part 14.This input side conductive pattern 120 is formed on printed circuit board (PCB) bonding part 12, and this outgoing side conductive pattern 140 is formed on liquid crystal panel bonding part 14.
One drive IC 15 is mounted to the zone line part of this substrate 10, and this input side conductive pattern 120 is connected with this drive IC 15, is used for the driving signal is transferred to drive IC 15 from printed circuit board (PCB) 130; This outgoing side conductive pattern 140 is connected with this drive IC 15, is used for the driving signal is transferred to liquid crystal panel 11 from drive IC 15, and input side conductive pattern 120 and outgoing side conductive pattern 140 near the welding resin layer 16 covering drive IC 15.In addition, alignment mark 18 is formed in the outer pattern of outgoing side conductive pattern 140 both sides, with the convenient lead that engages liquid crystal panel 11.
As shown in Figure 2, backlight module 150 is fixed on the below of liquid crystal panel 11 by framework 160.The input side of liquid crystal panel 11 is connected to the outgoing side conductive pattern 140 of flexible circuit board 1.Flexible circuit board 1 centers on the sidewall of framework 160, and is bent to be bonded to the basal surface of framework 160.Input side conductive pattern 120 is connected to the outgoing side of printed circuit board (PCB) 130, and printed circuit board (PCB) 130 is arranged on the bottom of framework 160.
In the above-mentioned prior art flexible circuit board 1, input side conductive pattern 120 and outgoing side conductive pattern 140 all are rectangles, and in order to prevent short circuit condition, must keep certain distance between each conductive pattern, so when the quantity that drives signal increases, printed circuit board (PCB) bonding part 12 that must be by increasing substrate 10 and the area of liquid crystal panel bonding part 14 are to hold the conductive pattern of greater number, and this measure must cause the increase of flexible circuit board 1 width, thereby is unfavorable for the lightening of LCD.
[summary of the invention]
Must reach the defective of holding more jumbo signal by increasing width for overcoming the prior art flexible circuit board, the invention provides a kind ofly, can transmit the flexible circuit board of more jumbo signal not changing under the width situation.
Another object of the present invention is to provide a kind of LCD that adopts above-mentioned flexible circuit board.
The technical scheme of technical solution problem of the present invention is: a kind of flexible circuit board is provided, and it comprises: one has the substrate of first bonding part and second bonding part; A plurality of first conductive patterns that are arranged on first bonding part; A plurality of second conductive patterns that are arranged on second bonding part; One is positioned at the drive IC of substrate zone line; One is used to connect the welding resin layer of first conductive pattern, second conductive pattern and drive IC, and it is arranged between first bonding part and second bonding part; Wherein, the mean breadth of this first conductive pattern is less than its breadth extreme, the mean breadth of this second conductive pattern is less than its breadth extreme, and the close setting of width larger part of the width smaller part of each first conductive pattern and adjacent first conductive pattern, the close setting of width larger part of the width smaller part of each second conductive pattern and adjacent second conductive pattern.
LCD of the present invention, comprise: liquid crystal panel, be connected to liquid crystal panel flexible circuit board, be arranged on liquid crystal panel below backlight module, be used to hold the framework of liquid crystal panel and backlight module, this flexible circuit board comprises: one has the substrate of first bonding part and second bonding part; A plurality of first conductive patterns that are arranged on first bonding part; A plurality of second conductive patterns that are arranged on second bonding part; One is positioned at the drive IC of substrate zone line; One is used to connect the welding resin layer of first conductive pattern, second conductive pattern and drive IC, and it is arranged between first bonding part and second bonding part; Wherein, the mean breadth of this first conductive pattern is less than its breadth extreme, the mean breadth of this second conductive pattern is less than its breadth extreme, and the close setting of width larger part of the width smaller part of each first conductive pattern and adjacent first conductive pattern, the close setting of width larger part of the width smaller part of each second conductive pattern and adjacent second conductive pattern.
Compared to prior art, the mean breadth of first conductive pattern of flexible circuit board of the present invention is less than its breadth extreme, the mean breadth of second conductive pattern is less than its breadth extreme, and the close setting of width larger part of the width smaller part of each first conductive pattern and adjacent first conductive pattern, the close setting of width larger part of the width smaller part of each second conductive pattern and adjacent second conductive pattern, so can hold more first conductive patterns or second conductive pattern in the occupied width range of the conductive pattern of a prior art, therefore under the identical situation of width, flexible circuit board of the present invention can transmit more jumbo signal.Adopt the LCD of flexible circuit board of the present invention more to meet lightening requirement.
[description of drawings]
Fig. 1 is a kind of synoptic diagram of prior art flexible circuit board.
Fig. 2 is the LCD synoptic diagram that adopts flexible circuit board shown in Figure 1.
Fig. 3 is the synoptic diagram of flexible circuit board first embodiment of the present invention.
Fig. 4 is the fragmentary cross-sectional view of flexible circuit board shown in Figure 3.
Fig. 5 is the synoptic diagram that adopts the LCD of flexible circuit board shown in Figure 3.
Fig. 6 is the synoptic diagram of flexible circuit board second embodiment of the present invention.
Fig. 7 is the synoptic diagram of flexible circuit board the 3rd embodiment of the present invention.
[embodiment]
Fig. 3 is the synoptic diagram of flexible circuit board first embodiment of the present invention.Fig. 4 is the fragmentary cross-sectional view that adopts the LCD of flexible circuit board first embodiment of the present invention.Fig. 5 is the synoptic diagram that adopts the LCD of flexible circuit board shown in Figure 3.See also Fig. 3 and Fig. 5, this flexible circuit board 2 comprises substrate 20, input side conductive pattern 220, outgoing side conductive pattern 240 and welding resin layer 26.This substrate 20 comprises the printed circuit board (PCB) bonding part 22 and the liquid crystal panel bonding part 24 that is used to be connected liquid crystal panel 21 that is used to connect printed circuit board (PCB) 230, and this welding resin layer 26 is formed between this printed circuit board (PCB) bonding part 22 and the liquid crystal panel bonding part 24.This input side conductive pattern 220 is formed on printed circuit board (PCB) bonding part 22, and this outgoing side conductive pattern 240 is formed on liquid crystal panel bonding part 24.
One drive IC 25 is mounted to the zone line part of this substrate 20, and this input side conductive pattern 220 is connected with this drive IC 25, is used for the driving signal is transferred to drive IC 25 from printed circuit board (PCB) 230.This outgoing side conductive pattern 240 is connected with this drive IC 25, is used for the driving signal is transferred to liquid crystal panel 21 from drive IC 25.In addition, alignment mark 28 is formed in the outer pattern of outgoing side conductive pattern 240 both sides, with the convenient lead that engages liquid crystal panel 21.
Seeing also Fig. 4, is the cut-away section synoptic diagram of flexible circuit board 2.This input side conductive pattern 220 and outgoing side conductive pattern 240 are separately positioned on the both sides of this substrate 20.This input side conductive pattern 220 is connected with the pin 251 of this drive IC 25, and this outgoing side conductive pattern 240 is connected with the pin 252 of this drive IC 25.This welding resin layer 26 is arranged between this input side conductive pattern 220 and the drive IC 25 and between outgoing side conductive pattern 240 and the drive IC 25, is used for fixing this drive IC 25.
As shown in Figure 5, backlight module 250 is fixed on the below of liquid crystal panel 21 by framework 260.The input side of liquid crystal panel 21 is connected to the outgoing side conductive pattern 240 of flexible circuit board 2.Flexible circuit board 2 centers on the sidewall of framework 260, and is bent to be bonded to the basal surface of framework 260.Input side conductive pattern 220 is connected to the outgoing side of printed circuit board (PCB) 230, and printed circuit board (PCB) 230 is connected to the bottom of framework 260.In addition, each assembly can also adopt alternate manner to be fixed on the framework 260.
In this flexible circuit board 2, input side conductive pattern 220 and outgoing side conductive pattern 240 all are isosceles triangles.For this input side conductive pattern 220 and outgoing side conductive pattern 240, breadth extreme is the base of isosceles triangle, mean breadth is the mean value of the everywhere width parallel with the isosceles triangle base, therefore, the breadth extreme of this input side conductive pattern 220 and outgoing side conductive pattern 240 is respectively 2 times of mean breadth separately.As shown in Figure 3, the close setting of width larger part with the width smaller part and the adjacent first input side conductive pattern 220 of each input side conductive pattern 220, the close setting of width larger part of the width smaller part of each outgoing side conductive pattern 240 and adjacent outgoing side conductive pattern 240 forms 220 combinations of input side conductive pattern and 240 combinations of outgoing side conductive pattern that a plurality of circulations occur thus.
Equal the width of rectangle input side conductive pattern 120 when the bottom width of this isoceles triangle shape input side conductive pattern 220, the spacing of adjacent isosceles triangle input side conductive pattern 220 equals the spacing of adjacent rectangle input side conductive pattern 120, thereby, every circulation occurs in the width range of a rectangle input side conductive pattern 120, can hold two adjacent isosceles triangle input side conductive patterns 220.In other words, under flexible circuit board 2 of the present invention and situation that prior art flexible circuit board 1 width equates, it is 2 times of prior art flexible circuit board 1 that the input side of this flexible circuit board 2 is led pattern numbers 220; In like manner, the outgoing side of this flexible circuit board 2 is led pattern numbers 240 and also is 2 times of prior art flexible circuit board 1.In sum, under the situation that width equates, but the capacity of flexible circuit board of the present invention 2 transmission signals is 2 times of prior art flexible circuit board 1.
Seeing also Fig. 6, is the synoptic diagram of flexible circuit board second embodiment of the present invention.This flexible circuit board 3 only is with the difference of flexible circuit board 2: input side conductive pattern 320 all is a rhombus with the shape of outgoing side conductive pattern 340, replaces isosceles triangle input side conductive pattern 220 and outgoing side conductive pattern 240.The breadth extreme of this rhombus input side conductive pattern 320 and outgoing side conductive pattern 340 also is respectively 2 times of mean breadth separately.In like manner, under the situation that width equates, but the capacity of flexible circuit board of the present invention 3 transmission signals is 2 times of prior art flexible circuit board 1.
Seeing also Fig. 7, is the synoptic diagram of flexible circuit board the 3rd embodiment of the present invention.This flexible circuit board 4 only is with the difference of flex circuit plate 2: the shape of input side conductive pattern 420 and outgoing side conductive pattern 440 all is a right-angle triangle, replaces isosceles triangle input side conductive pattern 220 and outgoing side conductive pattern 240.The breadth extreme of this right-angle triangle input side conductive pattern 420 and outgoing side conductive pattern 440 also is respectively 2 times of mean breadth separately.In like manner, under the situation that width equates, but the capacity of flexible circuit board of the present invention 4 transmission signals is 2 times of prior art flexible circuit board 1.
In addition, it is described that flexible circuit board of the present invention is not limited to above-mentioned embodiment, for example: input side conductive pattern and outgoing side conductive pattern only need satisfy separately mean breadth less than breadth extreme, and the close setting of width smaller part of adjacent input side conductive pattern and outgoing side conductive pattern can reach and not change under the flexible circuit board width situation, increases the purpose of signal transmission capacity.
Claims (8)
1. a flexible circuit board, it comprises: a substrate, it comprises first bonding part and second bonding part; A plurality of first conductive patterns, it is arranged on first bonding part; A plurality of second conductive patterns, it is arranged on second bonding part; One drive IC, it is positioned at the zone line of substrate, and this drive IC is connected with second conductive pattern with this first conductive pattern respectively; It is characterized in that: the mean breadth of this first conductive pattern is less than its breadth extreme, the mean breadth of this second conductive pattern is less than its breadth extreme, and the close setting of width larger part of the width smaller part of each first conductive pattern and adjacent first conductive pattern, the close setting of width larger part of the width smaller part of each second conductive pattern and adjacent second conductive pattern.
2. flexible circuit board as claimed in claim 1 is characterized in that: the mean breadth of this first conductive pattern and second conductive pattern is respectively half of breadth extreme separately.
3. flexible circuit board as claimed in claim 1 is characterized in that: this first conductive pattern and second conductive pattern are triangles.
4. flexible circuit board as claimed in claim 1 is characterized in that: this first conductive pattern and second conductive pattern are rhombuses.
5. LCD, comprise: liquid crystal panel, be connected to liquid crystal panel flexible circuit board, be arranged on the backlight module of liquid crystal panel below and be used to hold the framework of liquid crystal panel and backlight module, this flexible circuit board comprises: a substrate, and it comprises first bonding part and second bonding part; A plurality of first conductive patterns, it is arranged on first bonding part; A plurality of second conductive patterns, it is arranged on second bonding part; One drive IC, it is positioned at the zone line of substrate, and this drive IC is connected with second conductive pattern with this first conductive pattern respectively; It is characterized in that: the mean breadth of this first conductive pattern is less than its breadth extreme, the mean breadth of this second conductive pattern is less than its breadth extreme, and the close setting of width larger part of the width smaller part of each first conductive pattern and adjacent first conductive pattern, the close setting of width larger part of the width smaller part of each second conductive pattern and adjacent second conductive pattern.
6. LCD as claimed in claim 5 is characterized in that: the mean breadth of this first conductive pattern and second conductive pattern is respectively half of breadth extreme separately.
7. LCD as claimed in claim 5 is characterized in that: this first conductive pattern and second conductive pattern are triangles.
8. LCD as claimed in claim 5 is characterized in that: this first conductive pattern and second conductive pattern are rhombuses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100772268A CN100363790C (en) | 2004-12-01 | 2004-12-01 | Liquid crystal display and its soft circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100772268A CN100363790C (en) | 2004-12-01 | 2004-12-01 | Liquid crystal display and its soft circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1782786A true CN1782786A (en) | 2006-06-07 |
| CN100363790C CN100363790C (en) | 2008-01-23 |
Family
ID=36773169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100772268A Expired - Fee Related CN100363790C (en) | 2004-12-01 | 2004-12-01 | Liquid crystal display and its soft circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100363790C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914890A (en) * | 2011-07-21 | 2013-02-06 | 三星显示有限公司 | Flexible circuit board |
| WO2017035881A1 (en) * | 2015-09-06 | 2017-03-09 | 深圳市华星光电技术有限公司 | Driver chip structure and liquid crystal display device |
| CN107134242A (en) * | 2017-06-27 | 2017-09-05 | 武汉华星光电技术有限公司 | It is easy to the COG panels of test |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194934A (en) * | 1988-07-27 | 1993-03-16 | Semiconductor Energy Laboratory Co., Ltd. | Mounting structure for a semiconductor chip having a buffer layer |
| JP2538112Y2 (en) * | 1991-05-21 | 1997-06-11 | シャープ株式会社 | Mounting board |
| TWI286629B (en) * | 2000-07-20 | 2007-09-11 | Samsung Electronics Co Ltd | Liquid crystal display device and flexible circuit board |
| JP2002244577A (en) * | 2001-02-16 | 2002-08-30 | Seiko Epson Corp | Flexible substrate, electrooptical device and electronic appliance |
| JP2005093447A (en) * | 2001-09-18 | 2005-04-07 | Matsushita Electric Ind Co Ltd | Flexible wiring board |
| JP2003287766A (en) * | 2002-03-27 | 2003-10-10 | Optrex Corp | Liquid crystal display device |
| CN2763833Y (en) * | 2004-12-11 | 2006-03-08 | 鸿富锦精密工业（深圳）有限公司 | LCD and adopted flexible circuit board |
-
2004
- 2004-12-01 CN CNB2004100772268A patent/CN100363790C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914890A (en) * | 2011-07-21 | 2013-02-06 | 三星显示有限公司 | Flexible circuit board |
| CN102914890B (en) * | 2011-07-21 | 2017-06-09 | 三星显示有限公司 | Flexible PCB |
| WO2017035881A1 (en) * | 2015-09-06 | 2017-03-09 | 深圳市华星光电技术有限公司 | Driver chip structure and liquid crystal display device |
| CN107134242A (en) * | 2017-06-27 | 2017-09-05 | 武汉华星光电技术有限公司 | It is easy to the COG panels of test |
| WO2019000482A1 (en) * | 2017-06-27 | 2019-01-03 | 武汉华星光电技术有限公司 | Easy-to-test cog panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100363790C (en) | 2008-01-23 |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20080123 Termination date: 20191201 |