CN108807482B - OLED display screen module and display device - Google Patents
OLED display screen module and display device Download PDFInfo
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- CN108807482B CN108807482B CN201810631204.3A CN201810631204A CN108807482B CN 108807482 B CN108807482 B CN 108807482B CN 201810631204 A CN201810631204 A CN 201810631204A CN 108807482 B CN108807482 B CN 108807482B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
Abstract
The invention provides an OLED display screen module and a display device, wherein the OLED display screen module comprises: the display screen and with the flexonics portion that the display screen is connected, flexonics portion includes a plurality of connecting terminal, flexonics portion follows the edge of display screen is buckled extremely the back of display screen, just flexonics portion through supplementary tie coat with the metal heat dissipation layer laminating at the back of display screen, supplementary tie coat with viscosity between the flexonics portion is less than the default. The OLED display screen module and the display device can improve the yield of bending and repairing products.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to an OLED display screen module and a display device.
[ background of the invention ]
Since an organic light-emitting diode (OLED) has the advantages of self-luminescence, wide working temperature range, fast response speed, wide viewing angle, high light-emitting efficiency, capability of being manufactured on a flexible substrate, low driving voltage and energy consumption, and the like, it is known as a next generation display technology.
However, due to the particularity of the OLED display process, the production yield is low. In order to realize the full-screen display of the OLED, as shown in fig. 1 and 2, the connection terminal 21 of the flexible connection portion 20 of the OLED display is bent and attached to the back surface (Pad-bonding) of the display screen 10, and is specifically attached to the metal layer on the back surface of the display screen 10, so that the narrow-frame display effect is realized.
For the condition of low bending yield in production, at present, a bending rework (bending rework) process is used to save a part of defective products, and the bent Flexible Printed Circuit (FPC) 20 needs to be peeled off from the metal layer from the back of the display screen 10. As shown in fig. 3, at present, the display screen 10 is placed on the operation platform 30, and then the operation platform 30 is heated, and after the temperature of the operation platform 30 reaches the set temperature, the front of the display screen 10 is placed on the operation platform 30 in a downward direction. After heating for a certain time, the FPC is slightly pulled up, so that the FPC is stripped from the metal layer on the back of the display screen 10. Because FPC and metal level direct bonding, and viscidity is big, and need drag FPC in the peeling process, consequently cause FPC to warp easily, lead to the display to receive the secondary destruction. Secondly, because the OLED display screen is directly heated, if the temperature is too high or the time is long, the display of the product is poor easily, and if the stripping temperature is too low and the time is short, the product is difficult to strip effectively; resulting in lower stripping efficiency. Therefore, the existing bending repair has high repair difficulty, the poor improvement effect of the repaired product is not good enough, and even secondary damage is easily caused to the product.
Therefore, it is necessary to provide an OLED display module and a display device to solve the problems of the prior art.
[ summary of the invention ]
The invention aims to provide an OLED display screen module and a display device, which can improve the yield of bending and repairing products.
In order to solve the above technical problem, the present invention provides an OLED display screen module, which includes:
the display screen and with the flexonics portion that the display screen is connected, flexonics portion includes a plurality of connecting terminal, flexonics portion follows the edge of display screen is buckled extremely the back of display screen, just flexonics portion through supplementary tie coat with the metal heat dissipation layer laminating at the back of display screen, supplementary tie coat with viscosity between the flexonics portion is less than the default.
In the OLED display screen module, the upper surface and the lower surface of the auxiliary bonding layer are both provided with adhesive layers, the viscosity of the adhesive layer on the upper surface of the auxiliary bonding layer is smaller than the preset value, and the upper surface of the auxiliary bonding layer is close to the flexible connecting part.
In the OLED display screen module, the upper surface and the lower surface of the auxiliary bonding layer are both provided with a glue layer, and the viscosity of the glue layer on the upper surface and the viscosity of the glue layer on the lower surface are both smaller than the preset value.
In the OLED display screen module, the auxiliary bonding layer comprises two protective sub-layers and a main sub-layer positioned between the two protective sub-layers, and the upper surface and the lower surface of the main sub-layer are both provided with adhesive layers; the flexible connecting part is attached to the metal heat dissipation layer on the back of the display screen through the main body sublayer.
In the OLED display screen module, the auxiliary bonding layer and the flexible connecting part are bonded through the first colloid, and the viscosity of the first colloid is smaller than the preset value.
In the OLED display screen module, the auxiliary bonding layer and the metal heat dissipation layer are bonded through a second colloid, and the viscosity of the second colloid is smaller than the preset value.
In the OLED display screen module, the preset value is the viscosity between the flexible connecting part and the metal heat dissipation layer.
In the OLED display screen module, the surface of the connecting terminal is pressed with the chip on film.
In the OLED display screen module, the metal heat dissipation layer is made of copper.
The present invention also provides a display device, comprising: the OLED display screen module is characterized in that the OLED display screen module comprises a display screen and a light source.
According to the OLED display screen module and the display device, the bent flexible connecting part is attached to the metal layer on the back of the display screen through the auxiliary bonding layer with lower viscosity, so that bending and repairing are facilitated, and the yield of repaired products is improved.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of a conventional OLED display device before bending;
FIG. 2 is a schematic structural diagram of a conventional OLED display device after bending;
FIG. 3 is a schematic structural diagram of a conventional OLED display device during bending repair;
FIG. 4 is a schematic structural diagram of an OLED display device before bending according to the present invention;
FIG. 5 is a schematic structural diagram of an OLED display device after bending according to the present invention;
FIG. 6 is a schematic structural diagram of an auxiliary bonding layer according to the present invention.
[ detailed description ] embodiments
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
Referring to fig. 4 to 6, fig. 4 is a schematic structural diagram of an OLED display device before bending according to the present invention.
As shown in fig. 4, the OLED display panel module of the present invention includes: the display screen comprises a display screen 10 and a flexible connecting part 20 connected with the display screen, wherein the flexible connecting part 20 comprises a plurality of connecting terminals 21, and a flip chip film can be pressed on the connecting terminals 21.
The display screen 10 of the invention is an OLED display screen, and a metal heat dissipation layer 11 and an auxiliary bonding layer 12 are arranged on the back surface of the display screen 10.
As shown in fig. 5, the flexible connection portion 20 is bent to the back of the display screen 10 along the edge of the display screen 10, the flexible connection portion 20 is attached to the metal heat dissipation layer 11 on the back of the display screen through the auxiliary adhesive layer 12, and the viscosity between the auxiliary adhesive layer 12 and the flexible connection portion 20 is smaller than a preset value. The preset value is, for example, the viscosity between the flexible connection 20 and the metal heat dissipation layer 11.
In an embodiment, the auxiliary bonding layer 12 has a glue layer, in an embodiment, the glue layer is disposed on both the upper surface and the lower surface of the auxiliary bonding layer 12, and the viscosity of the glue layer on the upper surface of the auxiliary bonding layer 12 is smaller than the preset value, wherein the upper surface of the auxiliary bonding layer 12 is close to the flexible connection portion 20, that is, the upper surface of the auxiliary bonding layer 12 is attached to the flexible connection portion 20.
In one embodiment, the upper surface and the lower surface of the auxiliary bonding layer 12 are both provided with glue layers, and the viscosities of the glue layers on the upper surface and the lower surface are both smaller than the preset value. That is, in the invention, after the auxiliary bonding layer 12 with lower viscosity is bonded with the metal heat dissipation layer 11, the flexible connection part 20 is bonded on the auxiliary bonding layer 12, so that the flexible connection part 20 is convenient to tear off when being bent and repaired, the flexible connection part 20 is prevented from being damaged or deformed, and the yield of the repaired product is improved.
Of course, in order to simplify the manufacturing process and improve the production efficiency, in another embodiment, the viscosity of the glue layer on the upper surface and the viscosity of the glue layer on the lower surface of the auxiliary bonding layer 12 are both less than the predetermined value.
As shown in fig. 6, in another embodiment, the auxiliary adhesive layer 11 includes two protective sub-layers 111 and 113 and a main sub-layer 112 located between the two protective sub-layers 111 and 113, an adhesive layer is disposed on both the upper surface and the lower surface of the main sub-layer 112, and the flexible connection portion 20 is attached to the metal heat dissipation layer 12 on the back surface of the display panel through the main sub-layer 112. That is, when the flexible connector 20 is not attached, the two protective sublayers 111 and 113 protect the main body sublayer 112, and when the flexible connector 20 is attached, the two protective sublayers 111 and 113 are torn off, and the main body sublayer 112 is attached to the flexible connector 20 and the metal heat dissipation layer 12, respectively.
In another embodiment, the auxiliary adhesive layer 12 does not have an adhesive layer, and in one embodiment, the auxiliary adhesive layer 12 and the flexible connecting portion 20 are adhered by a first adhesive, and the viscosity of the first adhesive is smaller than the preset value. That is, only the viscosity of the glue between the auxiliary adhesive layer 12 and the flexible connecting portion 20 is small at this time.
In another embodiment, the auxiliary adhesive layer 12 and the metal heat dissipation layer 11 are adhered by a second adhesive, and the viscosity of the second adhesive is less than the preset value. That is, the viscosity of the adhesive between the auxiliary adhesive layer 12 and the flexible connecting portion 20 and the adhesive between the metal heat dissipation layer 11 and the auxiliary adhesive layer 12 are low. Since the auxiliary bonding layer 12 is bonded to the flexible connection portion 20 and the metal heat dissipation layer 11 by low-viscosity glue layers, the flexible connection portion can be prevented from being deformed when being pulled.
In one embodiment, the material of the metal heat dissipation layer 12 is copper. It is understood that the material of the metal heat dissipation layer 12 is not limited to copper, but may be other metal materials.
The area of the auxiliary adhesive layer 12 is not smaller than the area of the flexible connecting portion 20 attached to the back surface of the display panel. It is understood that although the area of the auxiliary adhesive layer 12 in fig. 5 is smaller than the area of the metal heat dissipation layer 11, the area of the auxiliary adhesive layer 12 may be equal to the area of the metal heat dissipation layer 11.
It can be understood that when the adhesion between the auxiliary adhesive layer 12 and the flexible connection portion 20 is low, if the flexible connection portion of the present embodiment is not bent well, and needs to be repaired, the auxiliary adhesive layer 12 and the flexible connection portion 20 can be peeled off first, and then the auxiliary adhesive layer 12 and the metal heat dissipation layer 11 can be peeled off, so that the flexible connection portion 20 is not easily damaged or deformed due to the low adhesion between the auxiliary adhesive layer 12 and the flexible connection portion 20.
When the adhesion between the auxiliary bonding layer 12 and the flexible connection portion 20 and the adhesion between the metal heat dissipation layer 11 and the flexible connection portion 20 are low, if the flexible connection portion 20 of the present invention is bent poorly, and needs to be repaired, the auxiliary bonding layer 12 and the metal heat dissipation layer 11 can be peeled off first, and then the auxiliary bonding layer 12 and the flexible connection portion 20 are peeled off.
In addition, compared with a heating stripping method, the OLED display screen module can improve the bending and repairing efficiency and further improve the production efficiency; and the bending repair process is simple, the yield of the reworked product is improved, and in addition, the secondary damage to the product can be effectively avoided in the bending repair process.
According to the OLED display screen module, the bent flexible connecting part is attached to the metal layer on the back of the display screen through the auxiliary bonding layer with lower viscosity, so that bending and repairing are facilitated, and the yield of repaired products is improved.
The invention also provides a display device, which comprises an OLED display screen module, as shown in fig. 4, the OLED display screen module of the invention comprises: the display screen comprises a display screen 10 and a flexible connecting part 20 connected with the display screen, wherein the flexible connecting part 20 comprises a plurality of connecting terminals 21, and a flip chip film can be pressed on the connecting terminals 21.
The display screen 10 of the invention is an OLED display screen, and a metal heat dissipation layer 11 and an auxiliary bonding layer 12 are arranged on the back surface of the display screen 10.
As shown in fig. 5, the flexible connection portion 20 is bent to the back of the display screen 10 along the edge of the display screen 10, the flexible connection portion 20 is attached to the metal heat dissipation layer 11 on the back of the display screen through the auxiliary adhesive layer 12, and the viscosity between the auxiliary adhesive layer 12 and the flexible connection portion 20 is smaller than a preset value. The preset value is, for example, the viscosity between the flexible connection portion and the metal heat dissipation layer.
In an embodiment, the auxiliary bonding layer 12 has a glue layer, in an embodiment, the glue layer is disposed on both the upper surface and the lower surface of the auxiliary bonding layer 12, and the viscosity of the glue layer on the upper surface of the auxiliary bonding layer 12 is smaller than the preset value, wherein the upper surface of the auxiliary bonding layer 12 is close to the flexible connection portion 20, that is, the upper surface of the auxiliary bonding layer 12 is attached to the flexible connection portion 20.
In one embodiment, the upper surface and the lower surface of the auxiliary bonding layer 12 are both provided with glue layers, and the viscosities of the glue layers on the upper surface and the lower surface are both smaller than the preset value. That is, in the invention, after the auxiliary bonding layer 12 with lower viscosity is bonded with the metal heat dissipation layer 11, the flexible connection part 20 is bonded on the auxiliary bonding layer 12, so that the flexible connection part 20 is convenient to tear off when being bent and repaired, the flexible connection part 20 is prevented from being damaged or deformed, and the yield of the repaired product is improved.
Of course, in order to simplify the manufacturing process and improve the production efficiency, in another embodiment, the viscosity of the glue layer on the upper surface and the viscosity of the glue layer on the lower surface of the auxiliary bonding layer 12 are both less than the predetermined value.
As shown in fig. 6, in another embodiment, the auxiliary adhesive layer 11 includes two protective sub-layers 111 and 113 and a main sub-layer 112 located between the two protective sub-layers 111 and 113, an adhesive layer is disposed on both the upper surface and the lower surface of the main sub-layer 112, and the flexible connection portion 20 is attached to the metal heat dissipation layer 12 on the back surface of the display panel through the main sub-layer 112. That is, when the flexible connector 20 is not attached, the two protective sublayers 111 and 113 protect the main body sublayer 112, and when the flexible connector 20 is attached, the two protective sublayers 111 and 113 are torn off, and the main body sublayer 112 is attached to the flexible connector 20 and the metal heat dissipation layer 12, respectively.
In another embodiment, the auxiliary adhesive layer 12 does not have an adhesive layer, and in one embodiment, the auxiliary adhesive layer 12 and the flexible connecting portion 20 are adhered by a first adhesive, and the viscosity of the first adhesive is smaller than the preset value. That is, only the viscosity of the glue between the auxiliary adhesive layer 12 and the flexible connecting portion 20 is small at this time.
In another embodiment, the auxiliary adhesive layer 12 and the metal heat dissipation layer 11 are adhered by a second adhesive, and the viscosity of the second adhesive is less than the preset value. That is, the viscosity of the adhesive between the auxiliary adhesive layer 12 and the flexible connecting portion 20 and the adhesive between the metal heat dissipation layer 11 and the auxiliary adhesive layer 12 are low. Since the auxiliary bonding layer 12 is bonded with the flexible connection portion 20 and the metal heat dissipation layer 11 by low-viscosity glue layers, the flexible connection portion can be prevented from being deformed due to pulling.
In one embodiment, the material of the metal heat dissipation layer 12 is copper. It is understood that the material of the metal heat dissipation layer 12 is not limited to copper, but may be other metal materials.
The area of the auxiliary adhesive layer 12 is not smaller than the area of the flexible connecting portion 20 attached to the back surface of the display panel. It is understood that although the area of the auxiliary adhesive layer 12 in fig. 5 is smaller than the area of the metal heat dissipation layer 11, the area of the auxiliary adhesive layer 12 may be equal to the area of the metal heat dissipation layer 11.
It can be understood that when the adhesion between the auxiliary adhesive layer 12 and the flexible connection portion 20 is low, if the flexible connection portion of the present embodiment is not bent well, and needs to be repaired, the auxiliary adhesive layer 12 and the flexible connection portion 20 can be peeled off first, and then the auxiliary adhesive layer 12 and the metal heat dissipation layer 11 can be peeled off, so that the flexible connection portion 20 is not easily damaged or deformed due to the low adhesion between the auxiliary adhesive layer 12 and the flexible connection portion 20.
When the adhesion between the auxiliary bonding layer 12 and the flexible connection portion 20 and the adhesion between the metal heat dissipation layer 11 and the flexible connection portion 20 are low, if the flexible connection portion 20 of the present invention is bent poorly, and needs to be repaired, the auxiliary bonding layer 12 and the metal heat dissipation layer 11 can be peeled off first, and then the auxiliary bonding layer 12 and the flexible connection portion 20 are peeled off.
In addition, compared with a heating stripping method, the OLED display screen module can improve the bending and repairing efficiency and further improve the production efficiency; and the bending repair process is simple, the yield of the reworked product is improved, and in addition, the secondary damage to the product can be effectively avoided in the bending repair process.
According to the display device, the bent flexible connecting part is attached to the metal layer on the back of the display screen through the auxiliary bonding layer with lower viscosity, so that bending and repairing are facilitated, and the product yield of repairing is improved.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (5)
1. The utility model provides a OLED display screen module which characterized in that includes: the display screen comprises a display screen and a flexible connecting part connected with the display screen, wherein the flexible connecting part comprises a plurality of connecting terminals, the flexible connecting part is bent to the back of the display screen along the edge of the display screen, the flexible connecting part is attached to a metal heat dissipation layer on the back of the display screen through an auxiliary bonding layer, the viscosity between the auxiliary bonding layer and the flexible connecting part is smaller than a preset value, and the preset value is the viscosity between the flexible connecting part and the metal heat dissipation layer; the upper surface and the lower surface of the auxiliary bonding layer are both provided with adhesive layers, the viscosity of the adhesive layer on the upper surface of the auxiliary bonding layer is smaller than the preset value, the upper surface of the auxiliary bonding layer is close to the flexible connecting part, and the viscosity of the adhesive layer on the lower surface is also smaller than the preset value; or
The auxiliary bonding layer is bonded with the flexible connecting part through a first colloid, and the viscosity of the first colloid is smaller than the preset value; the auxiliary bonding layer is bonded with the metal heat dissipation layer through a second colloid, and the viscosity of the second colloid is smaller than the preset value.
2. The OLED display screen module according to claim 1, wherein the auxiliary bonding layer comprises two protective sub-layers and a main sub-layer located between the two protective sub-layers, and the upper surface and the lower surface of the main sub-layer are both provided with glue layers; the flexible connecting part is attached to the metal heat dissipation layer on the back of the display screen through the main body sublayer.
3. The OLED display screen module of claim 1, wherein a flip-chip film is laminated on the surface of the connection terminal.
4. The OLED display screen module of claim 1, wherein the material of the metal heat dissipation layer is copper.
5. A display device, comprising: the OLED display screen module of any one of claims 1 to 4.
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| CN201810631204.3A CN108807482B (en) | 2018-06-19 | 2018-06-19 | OLED display screen module and display device |
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| CN201810631204.3A CN108807482B (en) | 2018-06-19 | 2018-06-19 | OLED display screen module and display device |
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| CN108807482A CN108807482A (en) | 2018-11-13 |
| CN108807482B true CN108807482B (en) | 2020-09-08 |
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| CN110262105B (en) * | 2019-06-13 | 2020-10-16 | 武汉华星光电技术有限公司 | Display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1862329A (en) * | 2005-05-13 | 2006-11-15 | Lg.菲利浦Lcd株式会社 | Fabricating method of flexible display |
| CN103345084A (en) * | 2013-07-03 | 2013-10-09 | 京东方科技集团股份有限公司 | Flexible displayer manufacturing method and flexible displayer |
| CN104869749A (en) * | 2015-04-17 | 2015-08-26 | 麦克思股份有限公司 | Electronic device |
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- 2018-06-19 CN CN201810631204.3A patent/CN108807482B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1862329A (en) * | 2005-05-13 | 2006-11-15 | Lg.菲利浦Lcd株式会社 | Fabricating method of flexible display |
| CN103345084A (en) * | 2013-07-03 | 2013-10-09 | 京东方科技集团股份有限公司 | Flexible displayer manufacturing method and flexible displayer |
| CN104869749A (en) * | 2015-04-17 | 2015-08-26 | 麦克思股份有限公司 | Electronic device |
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