CN109031733A - Flexible circuit board and display device - Google Patents
Flexible circuit board and display device Download PDFInfo
- Publication number
- CN109031733A CN109031733A CN201810797127.9A CN201810797127A CN109031733A CN 109031733 A CN109031733 A CN 109031733A CN 201810797127 A CN201810797127 A CN 201810797127A CN 109031733 A CN109031733 A CN 109031733A
- Authority
- CN
- China
- Prior art keywords
- circuit board
- flexible circuit
- millimeter
- groove
- pin terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
-
- 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
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Structure Of Printed Boards (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention provides a kind of flexible circuit board and display device, and the flexible circuit board is fixed together, the flexible circuit board includes grounding pin terminal by colloid with display panel；Diffusion region is provided on the grounding pin terminal, the diffusion region crushes the conducting particles in the colloid for receiving the colloid.Diffusion region is arranged by the grounding pin terminal in flexible circuit board in the program, spreads conducting particles effectively, improves the yields of display device.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of flexible circuit board and display device.
Background technique
The maturation of liquid crystal display (Liquid Crystal Display, LCD) technology, pushes smart phone, plate
The high speed development of the electronic equipments such as computer.
Wherein, liquid crystal display panel needs under the control of external driving chip (Integrate Circuit, IC),
It can presentation picture fast and accurately.Specifically, can be using flexible circuit board (Flexible Printed Circuit, letter
Claim FPC) carrying driving chip, then incited somebody to action by each to anisotropic conductive adhesive paste (Anisotropic Conductive Film, ACF)
Driving chip is pressed together on liquid crystal display panel.
The pin terminals width of FPC grounded part between 1.5-2.0 millimeters, ACF width range at 1.5 millimeters or so,
Conducting particles diameter range inside ACF is between 5-10 microns.During the pressing process, due to the leads ends of FPC grounded part
Son is wide, causes the conducting particles in the ACF of grounded part pin terminals that can be crushed, and far from pin terminals
Conducting particles in ACF is difficult to be crushed, and causes the reduction of display yields.
Summary of the invention
The purpose of the present invention is to provide a kind of flexible circuit board and display devices, improve the yields of display device.
The embodiment of the invention provides a kind of flexible circuit board, the flexible circuit board is solid with display panel by colloid
It is scheduled on together, the flexible circuit board includes grounding pin terminal；
Diffusion region is provided on the grounding pin terminal, the diffusion region crushes described for receiving the colloid
Conducting particles in colloid.
In some embodiments, the diffusion region includes multiple grooves.
In some embodiments, successively longitudinal arrangement is on the grounding pin terminal for the multiple groove, the groove
Width range be between 0.25 millimeter to 0.35 millimeter, the length range of the groove is between 1.6 millimeters to 2 millimeters.
In some embodiments, the multiple groove is successively laterally arranged on the grounding pin terminal, the groove
Width range be between 0.25 millimeter to 0.35 millimeter, the length range of the groove is between 1.1 millimeters to 1.5 millimeters.
In some embodiments, the diffusion region includes the through-hole of multiple array arrangements, and the diameter range of the through-hole is
Between 0.2 millimeter to 0.3 millimeter.
In some embodiments, the diffusion region includes multiple vacancy sections, and successively longitudinal arrangement exists for the multiple vacancy section
On the grounding pin terminal, the width range of the vacancy section is between 0.25 millimeter to 0.35 millimeter, the vacancy section
Length range is between 0.8 millimeter to 1.3 millimeters.
The present invention is that embodiment additionally provides a kind of display device, comprising: flexible circuit board, colloid layer and display surface
Plate, the colloid layer include the colloid with conducting particles, and the flexible circuit board includes grounding pin terminal；
The colloid layer, for the flexible circuit board and the display panel to be fixed together；
Diffusion region is provided on the grounding pin terminal, the diffusion region crushes described for receiving the colloid
Conducting particles in colloid.
In some embodiments, the diffusion region includes multiple grooves.
In some embodiments, successively longitudinal arrangement is on the grounding pin terminal for the multiple groove, the groove
Width range be between 0.25 millimeter to 0.35 millimeter, the length range of the groove is between 1.6 millimeters to 2 millimeters.
In some embodiments, the multiple groove is successively laterally arranged on the grounding pin terminal, the groove
Width range be between 0.25 millimeter to 0.35 millimeter, the length range of the groove is between 1.1 millimeters to 1.5 millimeters.
The flexible circuit board and display device of the embodiment of the present invention pass through the grounding pin terminal setting in flexible circuit board
Diffusion region spreads conducting particles effectively, improves the yields of display device.
For above content of the invention can be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate institute's accompanying drawings, makees
Detailed description are as follows:
Detailed description of the invention
Fig. 1 is the structural schematic diagram of display device provided in an embodiment of the present invention.
Fig. 2 a is the first structure diagram of flexible circuit board provided in an embodiment of the present invention.
Fig. 2 b is the second structural schematic diagram of flexible circuit board provided in an embodiment of the present invention.
Fig. 2 c is the third structural schematic diagram of flexible circuit board provided in an embodiment of the present invention.
Fig. 2 d is the 4th structural schematic diagram of flexible circuit board provided in an embodiment of the present invention.
Fig. 2 e is the 5th structural schematic diagram of flexible circuit board provided in an embodiment of the present invention.
Fig. 2 f is the 6th structural schematic diagram of flexible circuit board provided in an embodiment of the present invention.
Fig. 3 is the 7th structural schematic diagram of flexible circuit board provided in an embodiment of the present invention.
Fig. 4 is the structural schematic diagram of flexible circuit board provided in an embodiment of the present invention and existing flexible circuit board.
Fig. 5 is the experimental comparison figure of flexible circuit board provided in an embodiment of the present invention and existing flexible circuit board.
Specific embodiment
The explanation of following embodiment is to can be used to the particular implementation of implementation to illustrate the present invention with reference to additional schema
Example.The direction term that the present invention is previously mentioned, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outside", " side "
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used be to illustrate and understand the present invention, rather than to
The limitation present invention.
The similar unit of structure is to be given the same reference numerals in the figure.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
Containing at least one embodiment of the present invention.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Fig. 1 is please referred to, Fig. 1 is the structural schematic diagram of display device provided in an embodiment of the present invention.As shown in Figure 1, this is aobvious
Showing device 1 includes flexible circuit board 10, colloid layer 20 and display panel 30.
Colloid layer 20 includes colloid, and colloid layer 20 is for flexible circuit board 10 and display panel 30 to be fixed together.Its
In, there is conducting particles, after colloid layer 20 is by hot pressing, the conducting particles in colloid is crushed, by flexible circuitry in the colloid
Plate 10 and display panel 30 are electrically connected.
As described in Figure 2, flexible circuit board 10 includes grounding pin terminal 100, is provided with expansion on the grounding pin terminal 100
Area 1000 is dissipated, the diffusion region 1000 crushes the conducting particles in the colloid for receiving the colloid.
In some embodiments, as shown in Fig. 2 a- Fig. 2 f, diffusion region 1000 includes multiple grooves.Such as Fig. 2 a- Fig. 2 d institute
Show, multiple groove successively longitudinal arrangement on the grounding pin terminal 100.Wherein, the size of the groove of longitudinal arrangement, root
It is configured according to the size of grounding pin terminal 100.Since the size of grounding pin terminal 100 is generally 1.5 millimeter of * 2 milli
Rice.It is preferred, therefore, that the width range of the groove of longitudinal arrangement is set as between 0.25 millimeter to 0.35 millimeter, length range
It is set as between 1.6 millimeters to 2 millimeters.
When the length of the groove of longitudinal arrangement reaches 2 millimeters, the i.e. length of the groove of longitudinal arrangement and grounding pin terminal
When 100 length is consistent, the grounding pin terminal 100 of available structure as shown in Figure 2 a.When the length of the groove of longitudinal arrangement
When degree is less than the length of grounding pin terminal 100, the groove of longitudinal arrangement be can be set close to grounding pin terminal frontside edge
Position, so that grounding pin terminal 100 is formed forked as shown in Figure 2 b；The groove of longitudinal arrangement, which can also be arranged in, to be grounded
The middle position of pin terminals 100 forms shape as shown in Figure 2 c.
As shown in Fig. 2 d- Fig. 2 f, multiple groove successively can also be laterally arranged on the grounding pin terminal 100,
With the groove of longitudinal arrangement, the size for the groove laterally arranged can also be configured according to the size of grounding pin terminal 100.
Preferably, the width range for the groove laterally arranged be 0.25 millimeter to 0.35 millimeter between, length range be 1.1 millimeters extremely
Between 1.5 millimeters.
When the length for the groove laterally arranged reaches 1.5 millimeters, the i.e. width of the length of groove and grounding pin terminal 100
When consistent, the grounding pin terminal 100 of available structure as shown in Figure 2 d.When the length for the groove laterally arranged is less than ground connection
When the width of pin terminals 100, the groove laterally arranged be can be set in the position close to grounding pin terminal frontside edge, be made
Grounding pin terminal 100 forms forked as shown in Figure 2 e；Grounding pin terminal can also be arranged in the groove laterally arranged
100 middle position forms shape as shown in figure 2f.
As shown in figure 3, diffusion region 1000 can also include the through-hole of multiple array arrangements, the diameter range of the through-hole is
Between 0.2 millimeter to 0.3 millimeter.Preferably, as shown in Figure 3, it can be provided the through-hole of 5 rows 4 column.
In some embodiments, diffusion region 1000 further includes multiple vacancy sections, the multiple vacancy section successively longitudinal arrangement
On the grounding pin terminal 100.The size of the vacancy section is configured according to the size of grounding pin terminal 100.It is preferred that
, the width range of the vacancy section is between 0.25 millimeter to 0.35 millimeter, and the length range of the vacancy section is 0.8 millimeter
To between 1.3 millimeters.It should be noted that the arrangement mode of vacancy section is similar with the arrangement mode of groove, details are not described herein.
Next, can be tested to the flexible circuit board of existing flexible circuit board and the embodiment of the present invention, verify
The two with display panel during connecting, the removing situation of flexible circuit board and the rupture event of conducting particles.
In a first aspect, can be 85 in relative humidity, under the environmental parameter that temperature is 85, in flexible circuit board and display surface
After plate fixes 100 hours, the removing situation and the embodiment of the present invention of existing flexible circuit board 40 as shown in Figure 4 are observed
The removing situation of flexible circuit board 10.It can be found that existing flexible circuit board 40 has occurred peeling, and as shown in figure 5,
Bubble Q is produced in the flexible circuit board 40, and there is no peelings for the flexible circuit board 10 of the embodiment of the present invention, and such as
Shown in Fig. 5, without generating bubble in flexible circuit board 10.
Second aspect can observe existing flexible circuit board 40 after flexible circuit board and display panel are fixed respectively
The rupture feelings of the corresponding conducting particles of flexible circuit board 10 of the rupture event and embodiment of the present invention of corresponding conducting particles
Condition.As shown in figure 4, the same position of the flexible circuit board 10 of existing flexible circuit board 40 and the embodiment of the present invention can be arranged
Test point: L1, L2, L3, M1, M2, M3, R1, R2 and R3.By measuring the diameter of the corresponding conducting particles of above-mentioned test point,
To determine the rupture event of conducting particles.Specifically, at a temperature of 300 degree, it, can after existing 40 hot pressing of flexible circuit board 8 seconds
To obtain conducting particles diameter as shown in table 1 below, equally at a temperature of 300 degree, to the flexible circuit board of the embodiment of the present invention
After 10 hot pressing 8 seconds, available conducting particles diameter as shown in table 2 below.Tables 1 and 2 is compared it is found that conducting particles in table 2
Diameter be all larger than 5 microns, and have the diameters of multiple conducting particles in table 1 no more than 5 microns, and the flexibility of the embodiment of the present invention
The average diameter of the conducting particles of wiring board 10, greater than the average diameter of the conducting particles of existing flexible circuit board 40, i.e. this hair
The rupture event of the conducting particles of the flexible circuit board 10 of bright embodiment is broken better than the conducting particles of existing flexible circuit board 40
Split situation.
Table 1
Table 2
The flexible circuit board and display device of the embodiment of the present invention pass through the grounding pin terminal setting in flexible circuit board
Diffusion region spreads conducting particles effectively, improves the yields of display device.
In conclusion although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit
The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention subjects to the scope of the claims.
Claims (10)
1. a kind of flexible circuit board, the flexible circuit board is fixed together by colloid with display panel, which is characterized in that
The flexible circuit board includes grounding pin terminal；
Diffusion region is provided on the grounding pin terminal, the diffusion region crushes the colloid for receiving the colloid
In conducting particles.
2. flexible circuit board according to claim 1, which is characterized in that the diffusion region includes multiple grooves.
3. flexible circuit board according to claim 2, which is characterized in that the multiple groove successively longitudinal arrangement described
On grounding pin terminal, the width range of the groove is the length range of the groove between 0.25 millimeter to 0.35 millimeter
Between 1.6 millimeters to 2 millimeters.
4. flexible circuit board according to claim 2, which is characterized in that the multiple groove is successively laterally arranged in described
On grounding pin terminal, the width range of the groove is the length range of the groove between 0.25 millimeter to 0.35 millimeter
Between 1.1 millimeters to 1.5 millimeters.
5. flexible circuit board according to claim 1, which is characterized in that the diffusion region includes the logical of multiple array arrangements
Hole, the diameter range of the through-hole are between 0.2 millimeter to 0.3 millimeter.
6. flexible circuit board according to claim 2, which is characterized in that the diffusion region includes multiple vacancy sections, described
Multiple vacancy sections successively longitudinal arrangement on the grounding pin terminal, the width range of the vacancy section be 0.25 millimeter extremely
Between 0.35 millimeter, the length range of the vacancy section is between 0.8 millimeter to 1.3 millimeters.
7. a kind of display device characterized by comprising flexible circuit board, colloid layer and display panel, the colloid layer packet
The colloid with conducting particles is included, the flexible circuit board includes grounding pin terminal；
The colloid layer, for the flexible circuit board and the display panel to be fixed together；
Diffusion region is provided on the grounding pin terminal, the diffusion region crushes the colloid for receiving the colloid
In conducting particles.
8. display device according to claim 7, which is characterized in that the diffusion region includes multiple grooves.
9. display device according to claim 8, which is characterized in that successively longitudinal arrangement connects the multiple groove described
In ground pin terminals, the width range of the groove is between 0.25 millimeter to 0.35 millimeter, and the length range of the groove is
Between 1.6 millimeters to 2 millimeters.
10. display device according to claim 8, which is characterized in that the multiple groove is successively laterally arranged in described
On grounding pin terminal, the width range of the groove is the length range of the groove between 0.25 millimeter to 0.35 millimeter
Between 1.1 millimeters to 1.5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810797127.9A CN109031733B (en) | 2018-07-19 | 2018-07-19 | Flexible circuit board and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810797127.9A CN109031733B (en) | 2018-07-19 | 2018-07-19 | Flexible circuit board and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109031733A true CN109031733A (en) | 2018-12-18 |
| CN109031733B CN109031733B (en) | 2021-06-25 |
Family
ID=64643563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810797127.9A Active CN109031733B (en) | 2018-07-19 | 2018-07-19 | Flexible circuit board and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109031733B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI262346B (en) * | 2001-11-08 | 2006-09-21 | Hitachi Ltd | Liquid crystal display device |
| CN102316664A (en) * | 2010-07-02 | 2012-01-11 | 富葵精密组件(深圳)有限公司 | Flexible circuit board and manufacture method thereof |
| CN105572985A (en) * | 2015-12-23 | 2016-05-11 | 南京中电熊猫液晶显示科技有限公司 | COF substrate and liquid crystal display panel connected with same |
| CN205643942U (en) * | 2016-05-24 | 2016-10-12 | 合肥京东方光电科技有限公司 | Circuit plate structure and display device |
| CN205726657U (en) * | 2016-05-10 | 2016-11-23 | Tcl显示科技（惠州）有限公司 | Flexible PCB |
| CN107644593A (en) * | 2017-09-06 | 2018-01-30 | 武汉华星光电半导体显示技术有限公司 | A kind of flexible OLED display panel |
| CN207053876U (en) * | 2017-08-16 | 2018-02-27 | 信利光电股份有限公司 | A kind of FPC and electronic equipment |
-
2018
- 2018-07-19 CN CN201810797127.9A patent/CN109031733B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI262346B (en) * | 2001-11-08 | 2006-09-21 | Hitachi Ltd | Liquid crystal display device |
| CN102316664A (en) * | 2010-07-02 | 2012-01-11 | 富葵精密组件(深圳)有限公司 | Flexible circuit board and manufacture method thereof |
| CN105572985A (en) * | 2015-12-23 | 2016-05-11 | 南京中电熊猫液晶显示科技有限公司 | COF substrate and liquid crystal display panel connected with same |
| CN205726657U (en) * | 2016-05-10 | 2016-11-23 | Tcl显示科技（惠州）有限公司 | Flexible PCB |
| CN205643942U (en) * | 2016-05-24 | 2016-10-12 | 合肥京东方光电科技有限公司 | Circuit plate structure and display device |
| CN207053876U (en) * | 2017-08-16 | 2018-02-27 | 信利光电股份有限公司 | A kind of FPC and electronic equipment |
| CN107644593A (en) * | 2017-09-06 | 2018-01-30 | 武汉华星光电半导体显示技术有限公司 | A kind of flexible OLED display panel |
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| Publication number | Publication date |
|---|---|
| CN109031733B (en) | 2021-06-25 |
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