CN113257126A - Flexible display panel - Google Patents
Flexible display panel Download PDFInfo
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- CN113257126A CN113257126A CN202110504768.2A CN202110504768A CN113257126A CN 113257126 A CN113257126 A CN 113257126A CN 202110504768 A CN202110504768 A CN 202110504768A CN 113257126 A CN113257126 A CN 113257126A
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- binding
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- display panel
- flexible display
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the application discloses a flexible display panel, which comprises a binding region, wherein the binding region comprises a first binding terminal arranged in an aligned mode and a second binding terminal arranged on a chip on film, the binding region comprises a central binding region and edge binding regions arranged on two sides of the central binding region, and the binding terminals arranged in the edge binding regions are obliquely arranged relative to the binding terminals arranged in the central binding region; the terminal sets up to the tilt state to bind, and when flexible display panel leaded to the precision skew great because of being heated or surperficial inequality, can set up the offset of compensation when binding the precision through binding the terminal slope, precision skew too big phenomenon when avoiding appearing binding.
Description
Technical Field
The application relates to the technical field of flexible display, in particular to a flexible display panel.
Background
The existing flexible display panel comprises an alignment layer and a supporting layer arranged at the bottom of the alignment layer and used for supporting, because the material of the supporting layer is also flexible, the rigid support of glass is lacked, the problems of uneven heating, uneven surface and the like can occur when the flexible display panel is bound, the temperature of the middle heated part is concentrated, the temperature of both sides heated is dispersed, the precision deviation of the actual two sides of the flip chip is greatly bound, the circuit of a product is finally influenced to be conducted, and further the hidden line of a display picture is displayed.
Therefore, the existing flexible display panel has the technical problem of large alignment precision deviation during binding.
Disclosure of Invention
The embodiment of the application provides a flexible display panel, can alleviate the technical problem that the counterpoint precision skew is big when current flexible display panel exists to bind.
The embodiment of the application provides a flexible display panel, including being located the district that binds of non-display area, the one end of cover brilliant film with bind the district and connect, its characterized in that, bind the district including the first terminal that binds, cover brilliant film includes that the second binds the terminal, first bind the terminal with the terminal counterpoint setting is bound to the second, wherein, bind the district including the center and bind the district and be located the center and bind the marginal binding area of district both sides, be located the terminal slope setting of binding that the district was bound for being located the center to the edge is bound the terminal of binding of district.
Optionally, in some embodiments of the present application, in the edge bonding region, a separation distance between adjacent first bonding terminals is different.
Optionally, in some embodiments of the present application, in the edge bonding region, a distance between adjacent first bonding terminals gradually increases in a direction away from the central bonding region.
Optionally, in some embodiments of the application, in the edge bonding region, the first bonding terminals are all disposed in an inclined manner, and an inclined angle is formed between the first bonding terminals and a short side close to one side of the bonding region.
Alternatively, in some embodiments of the present application, the inclination angles of adjacent first binding terminals are different at the edge binding region.
Optionally, in some embodiments of the present application, in the edge bonding region, the farther the first bonding terminal is from the center bonding region in a direction away from the center bonding region, the smaller the inclination angle of the first bonding terminal.
Optionally, in some embodiments of the present application, in the edge bonding region, the inclination angle of the first bonding terminal is gradually decreased by a preset value in a direction away from the central bonding region.
Optionally, in some embodiments of the present application, the first binding terminals are disposed at periodic intervals, and the inclination angles of the first binding terminals on two adjacent sides of any one of the first binding terminals are the same.
Alternatively, in some embodiments of the present application, the inclination angles of the adjacent first binding terminals are the same.
Optionally, in some embodiments of the present application, in the central bonding region, the first bonding terminal is perpendicular to the short side near one side of the bonding region.
The flexible display panel provided by the embodiment of the application comprises a binding area positioned in a non-display area, wherein one end of a chip on film is connected with the binding area, the flexible display panel is characterized in that the binding area comprises a first binding terminal, the chip on film comprises a second binding terminal, the first binding terminal and the second binding terminal are arranged in a contraposition mode, the binding area comprises a central binding area and edge binding areas positioned on two sides of the central binding area, and the binding terminals positioned in the edge binding areas are arranged in an inclined mode relative to the binding terminals positioned in the central binding area; through binding the terminal and setting up to the tilt state, when flexible display panel leads to the precision skew great because of being heated or surperficial inequality, can confirm to bind the angle of inclination of terminal tilt state through the offset to compensate the offset of binding the precision, alleviated the big technical problem of counterpoint precision skew when current flexible display panel exists to bind.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a first top perspective view of a flexible display panel provided by an embodiment of the present application;
fig. 2 is a first top perspective view of a bonding area of a flexible display panel provided in an embodiment of the present application;
FIG. 3 is a second top perspective view of a bonding area of a flexible display panel provided in an embodiment of the present application;
fig. 4A is a schematic cross-sectional view illustrating a first method for manufacturing a flexible display panel according to an embodiment of the present disclosure;
fig. 4B is a schematic cross-sectional view of a second method for manufacturing a flexible display panel according to an embodiment of the present disclosure;
fig. 4C is a schematic cross-sectional view of a third method for manufacturing a flexible display panel according to an embodiment of the present disclosure;
fig. 4D is a fourth schematic cross-sectional view of a manufacturing method of a flexible display panel provided in the embodiment of the present application.
Description of reference numerals:
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
The embodiment of the application provides a flexible display panel. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
As shown in fig. 1, the flexible display panel 1 provided in the embodiment of the present application includes a bonding region 10 located in a non-display region, and one end of a flip chip 100 is connected to the bonding region 10, wherein the bonding region 10 includes a first bonding terminal 20, the flip chip 100 includes a second bonding terminal 30, the first bonding terminal 20 and the second bonding terminal 30 are aligned, and the bonding region 10 includes a central bonding region 101 and edge bonding regions 102 located at two sides of the central bonding region 101, and the bonding terminals located in the edge bonding regions 102 are inclined with respect to the bonding terminals located in the central bonding region 101.
In this embodiment, the first binding terminal 20 and the second binding terminal 30 are aligned in the binding region 10, and the binding terminals are set to be in an inclined state, so that when the flexible display panel 1 is subjected to heat or has uneven surface, which causes large precision deviation, the inclination angle of the inclined state of the binding terminals can be determined by the offset, thereby compensating the offset of the binding precision and alleviating the technical problem of large deviation of the alignment precision when the flexible display panel 1 is bound.
One end of the chip on film 100 is connected to the first bonding terminal 20 of the bonding region 10, and the other end is connected to the printed circuit board 110.
Since the first binding terminal 20 and the second binding terminal 30 are arranged in alignment, the first binding terminal 20 is taken as an example for illustration, and the arrangement scheme of the second binding terminal 30 and the corresponding first binding terminal 20 is completely the same.
In one embodiment, as shown in fig. 2, adjacent ones of the first binding terminals 20 are spaced apart by different distances in the edge binding region 102.
Wherein, in the central bonding region 101, the pitches between the adjacent first bonding terminals 20 are equal to S0.
Wherein, in the edge bonding region 102, in a direction away from the center bonding region 101, a spacing distance between adjacent ones of the first bonding terminals 20 increases.
In the present embodiment, since the heated temperature of the edge bonding region 102 is lower than that of the central bonding region 101, the expansion is not uniform, and the spacing between the adjacent first bonding terminals 20 farther from the central bonding region 101 is larger, for example, as shown in fig. 2, Sn is larger than S1 and larger than S0.
In one embodiment, in the edge bonding region 102, a distance between adjacent first bonding terminals 20 is gradually increased in a direction away from the center bonding region 101.
Wherein each increment is equal to (Sn-S1)/(n-1).
In this embodiment, considering that the unevenness of the flexible display panel 1 after being heated is caused by the slow conduction of the temperature of the pressure head in the flexible display panel 1 during the pressing, the temperature of the middle area is high, and the middle area is in direct contact with the pressure head, the temperature of the edge bonding area 102 is low, and the temperature gradually decreases from the middle area to the edge bonding area 102, so the technical scheme that the first bonding terminals 20 are arranged and the spacing distances are sequentially increased in this embodiment is used for compensating the precision offset caused by the uneven heating.
In one embodiment, as shown in fig. 3, in the edge bonding area 102, the first bonding terminals 20 are all disposed obliquely, and the first bonding terminals 20 form an oblique angle with the short side near one side of the bonding area 10.
Wherein said first bound terminals 20 at the edge bound region 102 are symmetrically arranged with respect to the central bound region 101.
Wherein the angle of inclination is acute.
Wherein the inclination angle of the first binding terminal 20 is gradually decreased in a direction away from the central binding region 101.
In this embodiment, the direction of the inclination angle away from the central bonding region 101 is gradually decreased, and considering that the unevenness of the flexible display panel 1 after being heated is caused by the slow conduction of the temperature of the pressure head in the flexible display panel 1 during the pressing process, and the temperature is decreased gradually from the central bonding region 101 to the edge bonding region 102, therefore, the technical problem that the heated temperature is decreased gradually from the central bonding region 101 to the edge bonding region 102 due to the unevenness of the heating process is solved, and this embodiment has a better effect of compensating the precision deviation.
In one embodiment, the tilt angles of adjacent ones of the first binding terminals 20 are different at the edge binding region 102.
Wherein, in a direction away from the central binding region 101, the inclination angle may be increased or decreased.
Wherein, in a direction facing away from the central bonding region 101, the inclination angles of the adjacent first bonding terminals 20 are different, and the inclination angles of the first bonding terminals 20 spaced apart from each other by one first bonding terminal 20 are the same.
In this embodiment, the setting of the tilt angle can be calculated according to the actual offset of the first binding terminal 20, since the support layer is made of a flexible material, the PI surface is prone to generate uneven wrinkles, the temperature unevenness is more obvious in the wrinkle area, and the temperature change is not linear, so that the tilt angle is set according to the actual offset in the direction away from the central binding area 101, so as to achieve the best effect of compensating for the accuracy offset in different products and different situations.
In one embodiment, in the edge bonding region 102, the farther the first bonding terminal 20 is from the center bonding region 101 in a direction away from the center bonding region 101, the smaller the inclination angle of the first bonding terminal 20.
As shown in fig. 3, in one embodiment, at the edge bonding region 102, the inclination angle of the first bonding terminal 20 is gradually decreased by a preset value in a direction away from the center bonding region 101.
The angle difference between adjacent tilt angles is a preset value, that is, the tilt angles decrease by a preset value in the direction away from the central binding area 101.
The inclination angle of the outermost first bond terminal 20 of the edge bond region 102 away from the center bond region 101 is α, and the value of α is adjusted by conversion according to the actual amount of expansion offset, α is arctan [ L/(Sn-S0) ].
Wherein, when the number of the first binding terminals 20 is m, the preset value of the inclination angle decrement is (90 ° - α)/(0.5 × m).
In this embodiment, the inclination angle is quantized, and the direction of the inclination angle away from the central bonding region 101 is gradually decreased, considering that the unevenness of the flexible display panel 1 after being heated is caused by the slow conduction of the temperature of the pressure head in the flexible display panel 1 during the pressing process, and the temperature is decreased gradually from the central bonding region 101 to the edge bonding region 102, therefore, the technical problem that the heated temperature is decreased gradually from the central bonding region 101 to the edge bonding region 102 due to the uneven heating is solved, and this embodiment has a better effect of compensating the precision deviation.
In one embodiment, the first binding terminals 20 are disposed at periodic intervals, and the inclination angles of the first binding terminals 20 on two adjacent sides of any one of the first binding terminals 20 are the same.
Wherein the inclination angles of the first binding terminal 20 in any period are different from those of the first binding terminals 20 at adjacent both sides.
The compensation amount in one period is the same, precision deviation caused by uneven temperature can be relieved, when certain precision deviation still exists in the part of the first binding terminal 20 far away from the central binding area 101, second compensation can be carried out by setting different spacing distances, when the first binding terminal 20 is prepared, the first binding terminal 20 is easy to form due to periodic regular setting, and the design cost of the mask plate is reduced.
In one embodiment, the inclination angles of the adjacent first binding terminals 20 are the same.
Wherein, when the edge bonding area 102 on the side of the center bonding area 101 is provided with n first bonding terminals 20, the tilt angle may be α ═ arctan { L/[ S (n-1) -S0 }.
In the present embodiment, the first binding terminals 20 are arranged at the same inclination angle, and the scheme is simple while being tapered.
In one embodiment, in the central bonding region 101, the first bonding terminal 20 is perpendicular to the short side near the side of the bonding region 10.
In the present embodiment, since the temperature of the central binding region 101 is uniform, it is not necessary to set the inclination angle to the first binding terminal 20.
As shown in fig. 4A to 4D, the method for manufacturing the flexible display panel 1 includes:
s1, providing a substrate, wherein the first binding terminals 20 of the substrate are arranged in a fan shape with unequal intervals;
s2, irradiating the substrate with laser to separate the alignment layer 50 from the glass 40;
s3, attaching the alignment film to the support film 90;
and S4, continuously finishing the bonding of the chip on film 100 and the bonding of the printed circuit board 110 on the substrate.
As shown in fig. 4A, in step S1, a buffer layer 60, a driver circuit layer 70, and a light-emitting functional layer 80 are formed on the substrate.
As shown in fig. 4B, in step S2, the laser wavelength is 308 nm or 305 nm.
As shown in fig. 4C, the support film 90 is made of polyimide, the support film 90 has special properties such as high strength, high toughness, wear resistance, high temperature resistance, and corrosion resistance, and the thickness of the support film 90 ranges from 100 micrometers to 200 micrometers.
As shown in fig. 4D, the printed circuit board 110 is connected to the substrate through the chip on film 100, and in the bonding region 10, the first bonding terminal 20 of the substrate is bonded to the second bonding terminal 30 of the chip on film 100 in a contact manner.
The flexible display panel provided by the embodiment includes a binding region located in a non-display region, and one end of a chip on film is connected with the binding region, wherein the binding region includes a first binding terminal, the chip on film includes a second binding terminal, and the first binding terminal and the second binding terminal are aligned, wherein the binding region includes a central binding region and edge binding regions located at two sides of the central binding region, and the binding terminals located in the edge binding regions are inclined with respect to the binding terminals located in the central binding region; through binding the terminal and setting up to the tilt state, when flexible display panel leads to the precision skew great because of being heated or surperficial inequality, can confirm to bind the angle of inclination of terminal tilt state through the offset to compensate the offset of binding the precision, alleviated the big technical problem of counterpoint precision skew when current flexible display panel exists to bind.
The foregoing detailed description is directed to a flexible display panel provided in the embodiments of the present application, and specific examples are applied herein to illustrate the principles and implementations of the present application, and the above description of the embodiments is only used to help understand the method and the core ideas of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. The utility model provides a flexible display panel, including being located the binding region of non-display area, the one end of cover brilliant film with binding the district and being connected, its characterized in that, binding the district including first binding terminal, cover brilliant film includes that the second binds the terminal, first binding terminal with the terminal counterpoint setting is bound to the second, wherein, binding the district including the center binding district and be located the center and bind the marginal binding district of district both sides, be located the terminal slope setting is bound for being located the binding terminal of center binding district to the binding terminal that the district was bound to the edge.
2. The flexible display panel of claim 1, wherein adjacent ones of the first binding terminals are spaced apart by different distances in the edge binding region.
3. The flexible display panel of claim 2, wherein at the edge bonding region, a pitch between adjacent first bonding terminals is gradually increased in a direction away from the center bonding region.
4. The flexible display panel according to claim 1, wherein the first binding terminals are each disposed at an inclination in the edge binding region, and the first binding terminals form an inclination angle with a short side near one side of the binding region.
5. The flexible display panel of claim 4, wherein the tilt angles of adjacent first binding terminals are different at the edge binding region.
6. The flexible display panel of claim 5, wherein in the edge bonding region, the farther the first bonding terminal is from the center bonding region in a direction away from the center bonding region, the smaller the tilt angle of the first bonding terminal.
7. The flexible display panel of claim 6, wherein the inclination angle of the first binding terminal is gradually decreased by a preset value in a direction away from a central binding region at the edge binding region.
8. The flexible display panel according to claim 5, wherein the first binding terminals are disposed at periodic intervals, and the inclination angles of the first binding terminals on adjacent two sides of any one of the first binding terminals are the same.
9. The flexible display panel of claim 4, wherein the tilt angles of adjacent first binding terminals are the same.
10. The flexible display panel of claim 4, wherein, at the central bonding region, the first bonding terminal is perpendicular to the short side near a side of the bonding region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110504768.2A CN113257126B (en) | 2021-05-10 | 2021-05-10 | Flexible display panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110504768.2A CN113257126B (en) | 2021-05-10 | 2021-05-10 | Flexible display panel |
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| CN113257126A true CN113257126A (en) | 2021-08-13 |
| CN113257126B CN113257126B (en) | 2022-07-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114078943A (en) * | 2021-11-05 | 2022-02-22 | 武汉华星光电半导体显示技术有限公司 | Display module and display device |
| CN114973995A (en) * | 2022-05-27 | 2022-08-30 | 福州京东方光电科技有限公司 | Display panel, display device and binding method thereof |
| CN114973946A (en) * | 2022-05-18 | 2022-08-30 | 武汉华星光电半导体显示技术有限公司 | Display module and mobile terminal |
| CN115185117A (en) * | 2022-07-08 | 2022-10-14 | 苏州华星光电技术有限公司 | Semi-manufactured goods display module assembly, display module assembly |
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|---|---|
| CN113257126B (en) | 2022-07-12 |
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