CN211240314U - Binding structure of flexible display panel and flexible circuit board - Google Patents
Binding structure of flexible display panel and flexible circuit board Download PDFInfo
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- CN211240314U CN211240314U CN202020323098.5U CN202020323098U CN211240314U CN 211240314 U CN211240314 U CN 211240314U CN 202020323098 U CN202020323098 U CN 202020323098U CN 211240314 U CN211240314 U CN 211240314U
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Abstract
The utility model provides a binding structure of flexible display panel and flexible line way board has less flexible line way board interval. The technical scheme of the utility model can effectively eliminate the bad phenomenon of bonding structure middling pressure trace, satisfy the product required precision.
Description
Technical Field
The utility model relates to a display device field, specifically speaking relates to a binding structure of flexible display panel and flexible line way board.
Background
In the conventional flexible bonding process, a flexible circuit board (Chip On Film, COF, flexible circuit board containing Chip) is bonded On a flexible display panel to form a signal transmission channel.
The conventional flexible Panel bonding area (bonding area of display Panel) is formed by a plurality of metal layers and nonmetal layers in a certain stacking manner to form circuits which are arranged in a staggered manner in an upper row and a lower row. In addition, a flexible COF pad (signal transmission line on a flexible circuit board, generally a copper pillar surface tin-plated structure) region is formed by stacking a plurality of metal layers in a certain manner to form an upper and lower double-row metal circuit, and the upper and lower row pitch of the conventional flexible display panel bonding pad is the same as the upper and lower row pitch of the flexible COF pad.
In the conventional flexible COF bonding process, ACF conductive adhesive (anisotropic conductive adhesive, conductive particles are conductive in the Z direction, and nonconductive in the X and Y directions, and the main body of the adhesive is made of an organic adhesive material and conductive particles) is first attached to a Panel bonding area, and then a flexible COF pad is aligned and bonded to the Panel bonding pad by hot pressing.
Because materials pressed by the flexible COF bonding process are easily warped deformation materials, the accurate alignment difficulty is high, the Y offset control is difficult, and the Y offset problem is easily caused in the actual process.
When there is a Y shift problem, the COF pad shifts downward (or upward), and after lamination, there is no indentation in the partial region of the top row (or the bottom row) of the Panel bonding region, which may cause deformation in the abnormal region under compression, and the bonding force at the interface of the metal film DL (Ti/Al/Ti) and the non-metal film BP (SiOx/SiNx) is weak, which may easily cause the BP film to form cracks above.
Therefore, the utility model provides a alleviate binding structure of flexible display panel and flexible line way board of unusual regional deformation pressure of pressurized.
SUMMERY OF THE UTILITY MODEL
To the problem among the prior art, the utility model aims to provide a binding structure of flexible display panel and flexible line way board can effectively eliminate the bad phenomenon of pressing mark in the binding structure, satisfies the product required precision.
According to the utility model discloses, a binding structure of flexible display panel and flexible line way board is provided, be equipped with the clamp plate on the flexible display panel, be equipped with the circuit board on the flexible line way board, the circuit board of flexible line way board is counterpointed the pressfitting on flexible display panel's clamp plate through binding the processing procedure, still be equipped with the recess on the side of flexible display panel's clamp plate, the recess is followed the length direction of clamp plate extends.
Preferably: one side of the pressing plate of the flexible display panel is connected with the circuit board of the flexible circuit board, and the groove is formed in the other side of the pressing plate of the flexible display panel.
Preferably: the cross section of the groove is in the shape of a semicircle
Preferably: the cross section of the groove is rectangular.
Preferably: the area of the cross section of the groove accounts for 5-20% of the area of the cross section of the pressure plate.
Preferably: the groove is located in the center of the side face of the pressing plate.
Preferably: the area of the opening of the groove on the side face of the pressure plate accounts for 25-40% of the area of the side face of the pressure plate.
Preferably: the flexible display panel is provided with a first row of pressing plates and a second row of pressing plates, wherein the first row of pressing plates and the second row of pressing plates are respectively provided with a plurality of pressing plates and are staggered up and down.
Preferably: the flexible printed circuit board is provided with a first row of circuit boards and a second row of circuit boards, wherein the first row of circuit boards and the second row of circuit boards are arranged in a staggered mode from top to bottom.
Preferably: the first row of pressing plates and the first row of circuit boards are mutually matched and connected, and the second row of pressing plates and the second row of circuit boards are mutually matched and connected.
The utility model discloses a binding structure of flexible display panel and flexible line way board, fluting on the pressure head, avoid the weak area of metal and nonmetal juncture, alleviate the unusual regional deformation pressure of pressurized.
Drawings
Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a flexible display panel according to the present invention;
fig. 2 is a schematic structural diagram of the flexible printed circuit of the present invention;
fig. 3 is a schematic structural diagram of a flexible binding process of the present invention;
fig. 4 is a schematic structural diagram of a cross section of a flexible binding process of the present invention;
fig. 5 is a schematic structural view of the side of the pressing plate of the present invention;
fig. 6 is a schematic structural view of a cross section of a platen of embodiment 1 of the present invention;
fig. 7 is a schematic structural view of a cross section of a platen according to example 2 and example 3 of the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
As shown in fig. 1 to 4, in an embodiment of the present invention, a binding structure of a flexible display panel and a flexible circuit board is provided, wherein a pressing plate 1 is disposed on the flexible display panel.
The flexible circuit board is provided with a circuit board 2. The circuit board 2 of the flexible circuit board is pressed on the pressing plate 1 of the flexible display panel in an alignment way through a binding process,
and as shown in fig. 5-6 in combination, the flexible display panel is further provided with a groove 5 on the side of the pressing plate 1, the groove 5 extending along the length direction of the pressing plate 1.
The utility model discloses a binding structure of flexible display panel and flexible line way board, fluting on flexible display panel's pressure head has improved the elasticity of flexible display panel pressure head, has avoided the weak area of metal and nonmetal juncture, has alleviateed the deformation pressure of pressurized abnormal region 4.
It should be noted that, in the embodiment of the present invention, among them, "up and down", "vertical", "Y direction", i.e., the direction up and down along the paper as shown in fig. 1 and 2, "horizontal", "X direction", i.e., the direction left and right along the paper as shown in fig. 1 and 2, and "Z direction", i.e., the direction perpendicular to the paper as shown in fig. 1 and 2.
"top-bottom" means an arrangement along the upper and lower portions of the paper as shown in fig. 1 and 2. "staggered" means that the blocks in the lower row are aligned with the gaps in the blocks in the upper row as shown in fig. 1 and 2. "alignment press-fit", that is, the circuit board 2 of the flexible circuit board and the press plate 1 of the flexible display panel as shown in fig. 1 and 2 are bonded together in a one-to-one correspondence, and allows misalignment and offset of the edges of the circuit board 2 and the press plate 1 due to a size problem.
The "length" is a length in the up-down direction of the paper surface as shown in fig. 1 and 2, and the "width" is a length in the left-right direction of the paper surface as shown in fig. 1 and 2.
As shown in fig. 5 to 6, in the embodiment of the present invention, it is preferable that the groove 5 is provided on the other side of the force-bearing surface of the pressing plate 1 of the flexible display panel, i.e., the other side of the wiring board 2 opposite to the flexible wiring board.
As shown in fig. 5-7, in the embodiment of the present invention, the number of the grooves 5, the shape of the cross section of the grooves 5, and the area of the cross section of the grooves 5 in the cross section of the pressing plate 1 can be adjusted according to the number of the lines (N rows of lines, N-1 grooves 5 can be opened, and the shape is any one of arc, rectangle, etc.), the distance between the rows and the lines, and the present invention has high flexibility and wide application range. In the embodiment of the present invention, it is preferable that the cross section of the groove 5 has a semicircular or rectangular shape, and it is preferable that the area of the cross section of the groove 5 occupies 5 to 20% of the area of the cross section of the pressing plate 1.
Further, as shown in fig. 5, in the embodiment of the present invention, it is preferable that the groove 5 is located at the center of the side of the pressing plate 1, and it is preferable that the area of the opening of the groove 5 on the side of the pressing plate 1 accounts for 25-40% of the area of the side of the pressing plate 1.
The invention is described below with reference to specific embodiments and with reference to the attached drawings:
example 1
As shown in fig. 1, in a binding structure of a flexible display panel and a flexible circuit board, a binding pad of the flexible display panel is designed to be a double-row structure with a certain distance from top to bottom, and all pressing plates 1 have the same basic size.
As shown in fig. 2, the flexible COF pad is designed in a double row structure with a certain distance between the upper and lower sides, and all the circuit boards 2 have the same basic size.
As shown in fig. 3 and 4, the flexible COF pad is bonded to the Panel bonding pad in a para-position by thermal compression. When the Y-direction deviation occurs, the pressure abnormal region 4 is generated.
As shown in fig. 5, the flexible display panel has a groove 5 opened in a length direction of a side surface of a pressing plate 1, and an area of an opening of the groove 5 on the side surface of the pressing plate 1 accounts for 30% of an area of the side surface of the pressing plate 1.
As shown in fig. 6, the cross-section of the groove 5 is semicircular in shape, and the area of the cross-section of the groove 5 occupies 5% of the area of the cross-section of the pressure plate 1.
Example 2
As shown in fig. 1, in a binding structure of a flexible display panel and a flexible circuit board, a binding pad of the flexible display panel is designed to be a double-row structure with a certain distance from top to bottom, and all pressing plates 1 have the same basic size.
As shown in fig. 2, the flexible COF pad is designed in a double row structure with a certain distance between the upper and lower sides, and all the circuit boards 2 have the same basic size.
As shown in fig. 3 and 4, the flexible COF pad is bonded to the Panel bonding pad in a para-position by thermal compression. When the Y-direction deviation occurs, the pressure abnormal region 4 is generated.
As shown in fig. 5, the flexible display panel has a groove 5 opened in a length direction of a side surface of a pressing plate 1, and an area of an opening of the groove 5 on the side surface of the pressing plate 1 accounts for 40% of an area of the side surface of the pressing plate 1.
As shown in fig. 7, the cross-section of the groove 5 is rectangular in shape, and the area of the cross-section of the groove 5 occupies 20% of the area of the cross-section of the platen 1.
Example 3
As shown in fig. 1, in a binding structure of a flexible display panel and a flexible circuit board, a binding pad of the flexible display panel is designed to be a double-row structure with a certain distance from top to bottom, and all pressing plates 1 have the same basic size.
As shown in fig. 2, the flexible COF pad is designed in a double row structure with a certain distance between the upper and lower sides, and all the circuit boards 2 have the same basic size.
As shown in fig. 3 and 4, the flexible COF pad is bonded to the Panel bonding pad in a para-position by thermal compression. When the Y-direction deviation occurs, the pressure abnormal region 4 is generated.
As shown in fig. 5, the flexible display panel has a groove 5 opened in a length direction of a side surface of a pressing plate 1, and an area of an opening of the groove 5 on the side surface of the pressing plate 1 accounts for 25% of an area of the side surface of the pressing plate 1.
As shown in fig. 7, the cross-section of the groove 5 is rectangular in shape, and the area of the cross-section of the groove 5 occupies 15% of the area of the cross-section of the platen 1.
To sum up, the utility model discloses a binding structure of flexible display panel and flexible line way board can avoid the weak area of metal and nonmetal juncture, alleviates the unusual regional deformation pressure of pressurized.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. The utility model provides a binding structure of flexible display panel and flexible line way board which characterized in that, be equipped with the clamp plate on the flexible display panel, be equipped with the circuit board on the flexible line way board, the circuit board of flexible line way board is counterpointed the pressfitting on the clamp plate of flexible display panel through binding the processing procedure, still be equipped with the recess on the side of the clamp plate of flexible display panel, the recess is followed the length direction extension of clamp plate.
2. The bonding structure of the flexible display panel and the flexible circuit board according to claim 1, wherein: one side of the pressing plate of the flexible display panel is connected with the circuit board of the flexible circuit board, and the groove is formed in the other side of the pressing plate of the flexible display panel.
3. The bonding structure of the flexible display panel and the flexible circuit board according to claim 1, wherein: the cross section of the groove is semicircular.
4. The bonding structure of the flexible display panel and the flexible circuit board according to claim 1, wherein: the cross section of the groove is rectangular.
5. The bonding structure of the flexible display panel and the flexible circuit board according to claim 1, wherein: the area of the cross section of the groove accounts for 5-20% of the area of the cross section of the pressure plate.
6. The bonding structure of the flexible display panel and the flexible circuit board according to claim 1, wherein: the groove is located in the center of the side face of the pressing plate.
7. The bonding structure of the flexible display panel and the flexible circuit board according to claim 1, wherein: the area of the opening of the groove on the side face of the pressure plate accounts for 25-40% of the area of the side face of the pressure plate.
8. The bonding structure of the flexible display panel and the flexible circuit board according to claim 1, wherein: the flexible display panel is provided with a first row of pressing plates and a second row of pressing plates, wherein the first row of pressing plates and the second row of pressing plates are respectively provided with a plurality of pressing plates and are staggered up and down.
9. The bonding structure of the flexible display panel and the flexible circuit board according to claim 8, wherein: the flexible printed circuit board is provided with a first row of circuit boards and a second row of circuit boards, wherein the first row of circuit boards and the second row of circuit boards are arranged in a staggered mode from top to bottom.
10. The bonding structure of the flexible display panel and the flexible circuit board according to claim 9, wherein: the first row of pressing plates and the first row of circuit boards are mutually matched and connected, and the second row of pressing plates and the second row of circuit boards are mutually matched and connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020323098.5U CN211240314U (en) | 2020-03-16 | 2020-03-16 | Binding structure of flexible display panel and flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020323098.5U CN211240314U (en) | 2020-03-16 | 2020-03-16 | Binding structure of flexible display panel and flexible circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211240314U true CN211240314U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020323098.5U Active CN211240314U (en) | 2020-03-16 | 2020-03-16 | Binding structure of flexible display panel and flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211240314U (en) |
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2020
- 2020-03-16 CN CN202020323098.5U patent/CN211240314U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" |
Address after: 201506, No. nine, No. 1568, Jinshan Industrial Zone, Shanghai, Jinshan District Patentee after: Shanghai Hehui optoelectronic Co., Ltd Address before: 201506 No. nine, No. 1568 engineering road, Shanghai, Jinshan District Patentee before: EverDisplay Optronics (Shanghai) Ltd. |
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| CP03 | "change of name, title or address" |