CN113889500A

CN113889500A - Display device, rework method of display device, and apparatus for separating display device

Info

Publication number: CN113889500A
Application number: CN202011254484.4A
Authority: CN
Inventors: 朴世勳
Original assignee: Samsung Display Co Ltd
Current assignee: Samsung Display Co Ltd
Priority date: 2020-07-01
Filing date: 2020-11-11
Publication date: 2022-01-04
Also published as: KR20220003692A

Abstract

A display device according to an embodiment of the present invention includes: a display panel section including a display unit including a plurality of pixels, a signal film unit on a rear surface of the display unit and transmitting a signal for image display of the display unit, and a board unit on the rear surface of the display unit and electrically connected to the display unit through the signal film unit; and a heat dissipation carrier adhered to the rear surface of the display panel section, wherein the heat dissipation carrier includes a transparent protective film and a conductive resin layer on the transparent protective film, wherein the conductive resin layer includes a semi-hardened resin having conductivity.

Description

Display device, rework method of display device, and apparatus for separating display device

Technical Field

The present invention relates to a display device, a rework method of the display device, and an apparatus for separating the display device.

Background

A display device is a device for displaying an image, and recently, an organic light emitting display (organic light emitting diode display) has been attracting attention.

The organic light emitting display device displays an image using an organic light emitting diode that generates light by recombination of electrons and holes. The organic light emitting display device has a self-light emitting characteristic, and unlike a liquid crystal display device (liquid crystal display device), it does not require a separate light source, and thus can be reduced in thickness and weight. In addition, the organic light emitting display device exhibits high quality characteristics such as low power consumption, high luminance, and high reaction speed.

Such a display device is manufactured by attaching a display panel and a window to each other using an adhesive film. The adhesive film positioned between the display panel and the window functions to fix the display panel and the window to each other. In the case where the adhesive film is erroneously attached, air bubbles may be generated between the display panel and the window, or foreign substances may be attached between the display panel and the window.

In this case, it is necessary to newly separate the display panel and the window, and a case where the display panel is damaged may occur in the process of separating the display panel and the window.

Disclosure of Invention

Solves the technical problem

An object of the present invention is to provide a display device in which a display panel and a window can be easily separated, a method of reworking the display device, and an apparatus for separating the display device.

Solving means

A display device according to an embodiment of the present invention includes: a display panel section including a display unit including a plurality of pixels, a signal film unit on a rear surface of the display unit and transmitting a signal for image display of the display unit, and a board unit on the rear surface of the display unit and electrically connected to the display unit through the signal film unit; and a heat dissipation carrier adhered to a rear surface of the display panel part, wherein the heat dissipation carrier includes a transparent protective film and a conductive resin layer on the transparent protective film, wherein the conductive resin layer includes a semi-hardened resin having conductivity.

The conductive resin layer may be deformed corresponding to a step difference on the rear surface of the display panel section so that the heat dissipation carrier flattens the rear surface of the display panel section.

The conductive resin layer can reduce local temperature deviation of the display panel section when the display panel section is cooled.

The conductive resin layer may include at least one of conductive polymer, metal powder, graphite powder, polyacetylene, and polyaniline.

A rework method of a display device according to another embodiment of the present invention includes: a step of disassembling a display panel and a window, wherein the display panel includes a display panel portion for displaying an image and a heat dissipation carrier adhered to a rear surface of the display panel portion, and the window is bonded to a front surface of the display panel; cleaning the window and the display panel; a step of adhering an adhesive film to the front surface of the display panel; a step of bonding the display panel and the window; and a step of dispersing the heat carrier from the display panel portion.

The step of disassembling the display panel and the window may include a step of cooling the display panel, and the heat dissipation carrier may reduce a local temperature deviation of the display panel when the display panel is cooled.

The heat dissipation carrier may include a transparent protective film and a conductive resin layer.

The conductive resin layer may include a semi-hardened conductive resin.

The conductive resin layer may be deformed corresponding to a step difference on the rear surface of the display panel section so that the heat dissipation carrier flattens the rear surface of the display panel.

The heat dissipation carrier may maintain a state of being adhered to the rear surface of the display panel part in the step of cleaning the window and the display panel, the step of adhering the adhesive film to the front surface of the display panel, and the step of bonding the display panel and the window.

The step of disassembling the display panel and the window may include: a step of fixing the position of the window to a support portion that supports a part of the window; a step of pressing a second region of the window, wherein the window includes a first region where the display panel is positioned and a second region located at a periphery of the first region; and a step of inserting a separation rod between the window and the display panel in a direction parallel to the second region of the window.

The step of disassembling the display panel and the window may include: a step of cooling the support portion by a cooling portion located below the support portion; and reducing local temperature deviation of the display panel by the heat dissipation carrier.

The cooling section may be brought to a temperature of-120 c.

The step of pressing the second region of the window may comprise: a step of applying a momentary impact to a second region of the window to cause peeling between the display panel and the window; and slowly applying pressure again to the second region of the window.

An apparatus for separating display devices according to still another embodiment of the present invention includes: a support portion facing the window and supporting a portion of the window, the window including a first region in which the display panel is positioned and a second region located at a periphery of the first region; a cooling portion located below the support portion and cooling the support portion; a window fixing portion for fixing the position of the window relative to the support portion; a display panel stopper on the support portion and spaced apart from the display panel at a predetermined interval; a window pressing portion for pressing a second region of the window; and a separation lever moving in a direction parallel to the second region of the window to be inserted between the window and the display panel,

wherein, the display panel includes: a display panel section for displaying an image; and a heat dissipation carrier adhered to a rear surface of the display panel section and including a transparent protective film and a conductive resin layer.

The heat dissipation carrier may reduce a local temperature deviation of the display panel when the display panel is cooled by the cooling part.

The cooling part may cool the display panel to-80 ℃ to-60 ℃.

The conductive resin layer may include a semi-hardened resin having conductivity.

Advantageous effects

As described above, according to the display device, the rework method of the display device, and the apparatus for separating the display device, damage to the display panel or the window may be prevented in the process of separating the display panel and the window, and damage to the display panel may be prevented in the cleaning process after the decomposition process of the display panel and the window, the adhesion process of the adhesive film to the display panel, and the bonding process of the window and the display panel.

Drawings

Fig. 1 is a diagram schematically illustrating an apparatus for separating a display device according to an embodiment of the present invention.

Fig. 2 is a side view illustrating a display panel according to an embodiment of the present invention.

Fig. 3 is a diagram illustrating a method of forming a display panel according to an embodiment of the present invention.

Fig. 4 is a perspective view schematically showing the support portion of fig. 1.

Fig. 5 is a perspective view schematically showing a structure in which a cooling portion is provided below the support portion of fig. 1.

Fig. 6 is a perspective view schematically showing the window fixing part of fig. 1.

Fig. 7 is a perspective view schematically showing the window pressing part of fig. 1.

Fig. 8 is a perspective view schematically showing the display panel stopper of fig. 1.

Fig. 9 is a side view of the display panel stopper of fig. 8.

Fig. 10 is a perspective view schematically showing the separation rod of fig. 1.

Fig. 11 is a flowchart illustrating a rework method of a display device according to an embodiment of the present invention.

Fig. 12 is a front view of an apparatus of a separate display device combined with a display panel stopper, a window fixing part, and a supporting part.

Fig. 13 to 16 are plan views illustrating a process of reworking the display device.

Fig. 17 to 22 are side views illustrating a process of reworking the display device.

Description of reference numerals

P10: display panel portion P20: heat dissipation carrier

100: support portion 200: cooling part

300: window fixing section 500: window pressure applying part

700: display panel stopper 900: separating rod

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily implement the present invention. The present invention may be embodied in various forms and is not limited to the embodiments described herein.

Further, in various embodiments, regarding constituent elements having the same structure, description will be representatively made in the first embodiment using the same reference numerals, and in the remaining embodiments, only the structure different from the first embodiment will be described.

In order to clearly describe the present invention, portions irrelevant to the description are omitted, and the same reference numerals are given to the same or similar constituent elements throughout the specification.

Throughout the specification, when a certain portion "includes" a certain constituent element, unless there is a specific statement to the contrary, it means that other constituent elements are not excluded, and other constituent elements may be included. In addition, throughout the specification, "on … …" means above or below the target portion, and does not necessarily mean above based on the direction of gravity.

Hereinafter, an apparatus for separating display devices according to an embodiment of the present invention will be described with reference to fig. 1.

Referring to fig. 1, the apparatus 10 for separating a display device may include a support part 100, a window fixing part 300, a window pressing part 500, a display panel stopper 700, and a separation lever 900. The apparatus 10 for separating a display device according to the present embodiment may separate the display panel P and the window W from each other when bubbles or foreign substances are generated between the display panel P and the window W or the display panel P and the window W are not aligned with each other in the process of attaching the display panel P and the window W to each other to manufacture the display device DE.

The display device DE is positioned on the support part 100, the window fixing part 300 fixes a portion of a first area (see DA in fig. 13) of the window W of the display device DE, and the window pressing part 500 momentarily presses a second area (see PA in fig. 13) of the window W, so that the window W and the display panel P can be partially separated. Then, in a state in which the window pressing part 500 presses the second area PA of the window W downward in the first direction (Z-axis), the separation lever 900 is inserted between the window W and the display panel P, so that the window W and the display panel P can be completely separated.

Hereinafter, a display panel P according to an embodiment of the present invention will be described with reference to fig. 2 and 3.

Fig. 2 is a side view illustrating a display panel according to an embodiment of the present invention. Fig. 3 is a diagram illustrating a method of forming a display panel according to an embodiment of the present invention.

Fig. 2 shows a state in which the front surface of the display panel P for displaying an image is directed to the lower direction, and fig. 3 shows a state in which the front surface of the display panel P is directed to the upper direction. The window W is attached to the front surface of the display panel P.

Referring to fig. 2 and 3, the display panel P includes a display panel portion P10 for displaying an image and a heat spreader carrier P20 adhered to a rear surface of the display panel portion P10.

The display panel portion P10 may include a display cell P11, a protective layer P12, a signal film cell P13, and a board cell P14.

The display unit P11 may include a plurality of pixels, a plurality of signal lines connected to the plurality of pixels, and the like. The plurality of pixels may display an image in response to scan signals, data signals, and the like applied through the plurality of signal lines.

The protective layer P12 is attached to the rear surface of the display cell P11 and functions to protect the display cell P11 from external influences.

The signal film unit P13 transmits a signal for image display of the display unit P11. A driving integrated circuit IC for driving the display unit P11 may be mounted on the signal film unit P13 in the form of a Chip On Film (COF), a Tape Carrier Package (TCP), or the like.

The board unit P14 may include a control integrated circuit IC that generates or outputs a signal for driving the display unit P11, a power management integrated circuit IC that supplies power to the display panel portion P10, and the like. The board unit P14 may include a Flexible Printed Circuit Board (FPCB), a Printed Circuit Board (PCB), and the like. The board unit P14 may be electrically connected to the display unit P11 through the signal film unit P13.

The signal film unit P13, the board unit P14, and the integrated circuit IC may be located on the rear surface of the display unit P11.

The heat dissipation carrier P20 may include a transparent protective film P21 and a conductive resin layer P22. The transparent protective film P21 may be formed of transparent plastic such as polyethylene terephthalate (PET), and the conductive resin layer P22 may be located on the transparent protective film P21. The heat dissipation carrier P20 may be adhered to the rear surface of the display panel portion P10 in the form of a film in which the conductive resin layer P22 is formed on the transparent protective film P21.

The conductive resin layer P22 may include semi-hardening (resin) having conductivity. The conductive resin layer P22 in a semi-cured state may have adhesiveness, so that the display panel portion P10 may be adhered to the heat dissipation carrier P20. The conductive resin layer P22 in the semi-cured state may be deformed corresponding to a step difference generated on the rear surface of the display panel portion P10 by the signal film unit P13, the board unit P14, the integrated circuit IC, and the like when the heat dissipation carrier P20 and the display panel portion P10 are adhered to each other, thereby canceling out the step difference on the rear surface of the display panel portion P10. That is, the heat dissipation carrier P20 may flatten the rear surface of the display panel P.

The conductive resin layer P22 may include conductive polymer, metal powder, graphite powder, and the like. Alternatively, the conductive resin layer P22 may include a conductive organic material such as polyacetylene or polyaniline. The conductive resin layer P22 has thermal conductivity, and prevents plastic (plasticity) deformation of the display panel portion P10 by reducing local temperature deviation due to temperature applied during decomposition of the display device DE.

The heat dissipation carrier P20 may maintain a state of being adhered to the rear surface of the display panel part P10 not only in the decomposition process of the display panel P and the window W, but also in the cleaning process after the decomposition process, the adhesion process of adhering the adhesive film to the display panel P, and the bonding process of the window W and the display panel P. The heat dissipation carrier P20 may be separated from the display panel part P10 after the bonding process of the window W and the display panel P is completed. The heat dissipation carrier P20 may protect the display panel part P10 from the cleaning solution during the cleaning process. The heat dissipation carrier P20 can prevent the display panel portion P10 from being crushed due to the pressure applied to the display panel portion P10 in the bonding process and the bonding process by offsetting the step difference on the rear surface of the display panel portion P10.

Hereinafter, respective structures of the apparatus 10 for separating display devices according to an embodiment of the present invention will be described in detail with reference to fig. 4 to 10.

Fig. 4 is a perspective view schematically showing the support portion of fig. 1. Fig. 5 is a perspective view schematically showing a structure in which a cooling portion is disposed below the support portion of fig. 1. Fig. 6 is a perspective view schematically showing the window fixing part of fig. 1. Fig. 7 is a perspective view schematically showing the window pressing part of fig. 1. Fig. 8 is a perspective view schematically showing the display panel stopper of fig. 1. Fig. 9 is a side view of the display panel stopper of fig. 8. Fig. 10 is a perspective view schematically showing the separation rod of fig. 1.

Referring to fig. 4, the support portion 100 may support a portion of the display device DE during separation of the window W and the display panel P. Specifically, the support portion 100 may be opposite to the window W to support a portion of the window W. The window W of the display device DE may be positioned on the support 100, and the display panel P may be positioned on the window W.

At this time, the support portion 100 may include a main body 110, the main body 110 having a receiving groove 130 of a shape corresponding to the shape of the window W. The receiving groove 130 is formed in the same shape as the window W, and thus can support the window W, thereby preventing the window W from moving during the separation of the window W from the display panel P.

In the present embodiment, the window W may have a shape in which both side ends are bent upward in the first direction (Z-axis). At this time, inner side surfaces of both sides of the receiving groove 130 of the support part 100 may have a shape curved upward in the first direction (Z axis) corresponding to the shape of the window W. However, the present invention is not limited thereto, and the receiving groove 130 may have various shapes according to the shape of the window W. For example, in the case where the window W has a flat plate shape, the inside of the receiving groove 130 of the support portion 100 may have a flat plate shape.

On the other hand, the other both side ends of the receiving groove 130 of the support 100, more specifically, the ends of the receiving groove 130 of the support 100 in the second direction (X-axis) are opened. Thus, as shown in fig. 1, the receiving groove 130 may support only a portion of the window W. The remaining portion of the window W may not be supported by the support portion 100, but may protrude in the second direction (X-axis). In the present embodiment, the second area PA of the window W, where the Home Button (Home Button) of the display device DE and the like are positioned, may protrude from the support 100.

The support portion 100 may be formed of a hard material to prevent the shape of the window W from being deformed while the support portion 100 supports the window W. For example, the support portion 100 may be formed of a metal or plastic material.

Referring to fig. 5, a cooling part 200 for cooling the display device DE may be disposed below the supporting part 100. The cooling part 200 is in contact with the support part 100 to cool the support part 100, and a structure or the like for transferring heat, such as a heat pipe or the like, may be disposed inside thereof. The cooling part 200 may be formed at a temperature of about-120 c.

At this time, the upper side of the cooling part 200 may be in direct contact with the supporting part 100. That is, the main body 110 formed with the receiving groove 130 may contact the cooling part 200. The main body 110 of the support part 100 may contain a substance having high thermal conductivity to be rapidly cooled by the cooling part 200. For example, the body 110 may include a metal such as copper (Cu), aluminum (Al), or the like. By the heat conduction of the cooling part 200, the supporting part 100 is cooled, and the display device DE may be cooled to about-80 ℃ to-60 ℃.

According to the present embodiment, since the cooling part 200 cools the support part 100 in a state of directly contacting the support part 100, it is possible to shorten the time required to cool the display device DE positioned on the support part 100. In particular, since a process of moving the display device DE onto the support portion 100 after cooling the display device DE from the outside is omitted, the working time can be shortened.

Further, the cooling part 200 may keep the temperature of the adhesive film (see AF of fig. 17) constant during the separation of the window W and the display panel P from each other. That is, the temperature at which the adhesive strength of the adhesive film AF is reduced can be constantly maintained.

Referring to fig. 6, the window fixing part 300 may include a first contact strip 320 and a second contact strip 340. The first and second contact bars 320 and 340 may fix the window W into the receiving groove 130 of the support 100 by pressing both side ends of the window W downward in the first direction (Z-axis). Here, both side ends of the window W may refer to edges of the window W disposed in the third direction (Y-axis) and facing each other.

In the present embodiment, the first and second contact bars 320 and 340 of the window fixing part 300 are in contact with only the window W of the display device DE, and the first and second contact bars 320 and 340 are not in contact with the display panel P.

The first and second contact bars 320 and 340 may have a bar (bar) shape elongated in the second direction (X-axis). Since the window W of the display device DE has a shape elongatedly extending in the second direction (X-axis), the first and second contact bars 320 and 340 may also elongatedly extend in the second direction (X-axis) to correspond to the shape of the window W.

In order to uniformly contact the end of the window W, the lower side end surface of the first contact bar 320 may have a flat shape. Further, the lower side end surface of the second contact bar 340 may also have a flat shape, similar to the first contact bar 320.

At this time, the first and second contact bars 320 and 340 may be formed of a relatively soft (soft) material to prevent damage to the surface of the end of the window W in contact therewith. For example, the first contact bar 320 and the second contact bar 340 may be formed of plastic or acryl. However, the first and second contact bars 320 and 340 are not limited thereto, and may be formed of various materials.

On the other hand, the first and second contact bars 320 and 340 may be combined with the first and

second fixing plates

310 and 330, respectively. That is, the first contact bar 320 may be combined with the first fixing plate 310, and the second contact bar 340 may be combined with the second fixing plate 330.

At this time, the first fixing plate 310 may be moved in the first direction (Z-axis) and the third direction (Y-axis). Specifically, the first fixing plate 310 may move in a vertical direction as a first direction (Z-axis), and further, the first fixing plate 310 may move in a horizontal direction as a third direction (Y-axis). Similarly, the second fixing plate 330 may also move in a vertical direction as a first direction (Z-axis) and may move in a horizontal direction as a third direction (Y-axis). The first and

second fixing plates

310 and 330 may be combined with a first driving part (not shown) capable of moving the first and

second fixing plates

310 and 330 in the above-described direction. The first driving part may include a driving motor, a gear, and the like.

In the present embodiment, before the display device DE is placed on the support part 100, the first and

second fixing plates

310 and 330 may be moved in the third direction (Y-axis) to be disposed in a state of being apart from each other. Then, when the display device DE is positioned on the support 100, the first and

second fixing plates

310 and 330 may move in the third direction (Y-axis) until the distance between the first and

second fixing plates

310 and 330 is the same as the width of the window W.

Next, the first and

second fixing plates

310 and 330 are moved downward in the first direction (Z axis) such that the first and second contact bars 320 and 340, which are coupled to the first and

second fixing plates

310 and 330, respectively, press both side ends of the window W (see fig. 1) downward in the first direction (Z axis). Thereby, the window W (see fig. 1) may be fixed within the receiving groove 130 of the support portion 100.

The first contact strip 320 may be constituted by two

contact strips

321, 323. At this time, the contact bars 321, 323 may be arranged side by side in the second direction (X-axis). The second contact strip 340 may also be formed by two

contact strips

341, 343. Similarly, the contact bars 341, 343 may be arranged side by side along the second direction (X-axis). However, the present invention is not limited thereto, and the first contact bar 320 may be composed of one contact bar, or may be composed of three or more separate contact bars. The second contact strip 340 may also be formed in the same manner as the first contact strip 320.

Referring to fig. 7, the window pressing part 500 may press the second area PA of the window W downward in the first direction (Z-axis). That is, as shown in fig. 1, the window pressing part 500 may press the second area PA of the window W in a lower direction. The window pressing part 500 may apply a momentary impact to the second area PA of the window W. The window pressing part 500 may maintain the state in which the second area PA of the window W is bent downward in the first direction (Z-axis) by continuously pressing the second area PA of the window W toward the lower direction.

According to the present embodiment, the window pressing part 500 may include the first pressing member 510, the second pressing member 530, and the detection sensor 540. The first and second

pressing members

510 and 530 may contact the second area PA of the window W to press the second area PA of the window W. At this time, the first and second

pressing members

510 and 530 may be arranged side by side in the third direction (Y-axis).

The first pressing member 510 may include a first bar member 511 and a first pressing tip 513. The first bar-shaped member 511 is a bar-shaped member extending in the first direction (Z axis), and may pressurize the second area PA of the window W by the first pressurizing tip 513. The first bar member 511 may be formed of a material having a relatively large hardness to transmit a predetermined force to the first pressing tip 513. For example, the first bar member 511 may include steel, aluminum, SUS, or the like. The second pressing member 530 may include a second bar-shaped member 531 and a second pressing tip 533. Similarly, the second bar-shaped member 531 may also be a bar-shaped member extending in the first direction (Z axis). An end of the second bar member 531 may be combined with a second pressing tip 533.

The first pressing tip 513 and the second pressing tip 533 are portions in contact with the second area PA of the window W, and may be formed of a flexible substance to prevent the window W from being damaged. For example, first pressing tip 513 and second pressing tip 533 may include rubber, silicone, plastic, or the like.

The window pressing part 500 may control the force and time transmitted to the second area PA of the window W by the first and second

pressing members

510 and 530.

The detection sensor 540 may be positioned adjacent to the first pressing member 510 and the second pressing member 530. The detection sensor 540 may detect whether the first and second

pressing members

510 and 530 are accurately in contact with the second area PA of the window W.

The window pressing part 500 may be coupled to a second driving part (not shown) capable of moving the first pressing member 510 and the second pressing member 530. The second driving part (not shown) may include a driving motor, a gear, and the like.

Referring to fig. 1, 8 and 9, the display panel stopper 700 may be located on the window W located on the support portion 100. The display panel stopper 700 may be positioned to be spaced apart from the display panel P by a predetermined interval in the first direction (Z-axis). At this time, the display panel stopper 700 may be arranged side by side with the display panel P.

In the process of separating the window W of the display device DE from the display panel P, the display panel stopper 700 may prevent the display panel P from being separated from the support portion 100 and being separated to the outside at the moment when the display panel P is completely separated from the window W. That is, after the display panel P is separated from the window W, the display panel stopper 700 may cause the display panel P to be placed on the window W.

In particular, as in the present embodiment, when both side ends of the window W have a shape bent upward in the first direction (Z axis), the display panel P attached to the window W may also have a shape with both side ends bent upward in the first direction (Z axis). At this time, at the moment when the display panel P is separated from the window W, the display panel P may pop out of the window W due to a restoring force to restore the display panel P to its original state. However, the display panel stopper 700 is positioned above the display panel P, so that the display panel P may be prevented from being detached to the outside.

According to the present embodiment, the display panel stopper 700 may include a first plate 710 and at least one impact absorbing part 730. The first plate 710 is a plate-shaped member, and at least one impact absorbing part 730 may be disposed on the first plate 710.

The shock absorbing portion 730 may directly collide with the display panel P separated from the window W and prevent the display panel P from being separated from the support portion 100 to be separated to the outside. At this time, the impact absorbing part 730 may absorb the impact generated by the display panel P and prevent the display panel P from being damaged when the display panel P contacts the impact absorbing part 730.

The impact absorbing part 730 may include a contact plate 731, a main body 735, an elastic member 739, and a fastening member 737. The contact plate 731 may be a portion located at the lowermost portion of the impact absorbing portion 730 and directly contacting the display panel P. The contact plate 731 may include a flexible substance to prevent the display panel P in contact therewith from being damaged. For example, contact plate 731 may comprise rubber, silicone, or the like.

The elastic member 739 may be fixed through the first plate 710. At this time, the elastic member 739 may be firmly fixed to the first plate 710 by the fastening member 737. A spring as an elastic body may be positioned inside the elastic member 739.

The main body 735 is a member penetrating the elastic member 739, and the contact plate 731 may be coupled to one side end portion of the main body 735. Thus, when the touch panel 731 collides with the display panel P, the main body 735 coupled with the touch panel 731 may be moved upward in the first direction (Z axis). At this time, the elastic member 739 combined with the main body 735 may absorb the impact.

According to the present embodiment, a plurality of shock-absorbing parts 730 may be disposed on the first plate 710. In the present embodiment, although the case where 6 impact absorbing portions 730 are arranged is described, it is not limited thereto, and the number of impact absorbing portions 730 is not limited.

Further, since the heat dissipation carrier P20 is adhered to the rear surface of the display panel portion P10, even if the rear surface of the display panel P is impacted by the impact absorbing portion 730 during the process of separating the window W of the display device DE from the display panel P, the rear surface of the display panel portion P10 may be protected by the heat dissipation carrier P20.

Meanwhile, the impact absorbing part 730 may absorb and fix the display panel P through the contact plate 731. For example, a hole (not shown) may be formed in the contact plate 731, and the display panel P is vacuum-sucked through the hole, thereby fixing the display panel P to the display panel stopper 700. After the display panel P is separated from the window W, the display panel P is placed on the window W again, and the impact absorbing part 730 may move the display panel P to the outside by adsorbing and fixing the display panel P. At this time, the heat dissipation carrier P20 may improve the adsorptivity of the display panel P by flattening the rear surface of the display panel P and prevent the rear surface of the display panel portion P10 from directly contacting the impact absorbing portion 730, thereby protecting the rear surface of the display panel portion P10.

Referring to fig. 1 and 10, a separation rod 900 may be inserted between the display panel P and the window W to separate the display panel P and the window W from each other.

The release lever 900 may have a first inclined surface 910 at one side end of the lever body 930. The lever body 930 may be a bar-shaped member extending in the second direction (X-axis). More specifically, the stick body 930 may be a rectangular column shape.

One side end of the separation lever 900 may have a wedge shape by the first inclined surface 910 of the separation lever 900. Thereby, one end of the separation lever 900 can be easily inserted between the display panel P and the window W.

At this time, the first inclined surface 910 may face an upper side in the first direction (Z axis). Specifically, when the separation lever 900 is inserted between the display panel P and the window W, the first inclined surface 910 of the separation lever 900 may face the display panel P side. That is, the separation lever 900 may be inserted between the display panel P and the window W and moved while the first inclined surface 910 of the separation lever 900 pushes the display panel P upward.

In order to separate the display panel P and the window W from each other, the separation lever 900 may be formed of a hard material. For example, the separation rod 900 may be formed of a metal or plastic material.

Hereinafter, a rework process of the display device according to an embodiment of the present invention will be described with reference to fig. 11 to 22.

Fig. 11 is a flowchart illustrating a rework method of a display device according to an embodiment of the present invention. Fig. 12 is a front view of an apparatus of a separate display device combined with a display panel stopper, a window fixing part, and a supporting part. Fig. 13 to 16 are plan views illustrating a process of reworking the display device. Fig. 17 to 22 are side views illustrating a process of reworking the display device.

Referring to fig. 11 and 12, in the process of manufacturing the display device material DE by bonding the display panel P and the window W, when bubbles or foreign substances are generated between the display panel P and the window W or the display panel P and the window W are misaligned, a decomposition process of the display device DE is performed (S110).

The display device DE in which the window W and the display panel P are bonded by the adhesive film AF is positioned on the support 100. More specifically, the window W of the display device DE is positioned into the receiving groove 130 of the support 100. As described above with reference to fig. 2 and 3, the display panel P may include the display panel part P10 and the heat dissipation carrier P20.

On the other hand, in the manufacturing process of the display device DE, the window W may be bonded to the front surface of the display panel portion P10 to which the heat dissipation carrier P20 is not adhered, and a broken piece may be generated in the process, so that the decomposition process of the display panel portion P10 and the window W may be required. In this case, the display device DE may be positioned on the support part 100 after the heat dissipation carrier P20 is adhered to the rear surface of the display panel part P10.

As illustrated in fig. 5, the cooling part 200 may cool the display device DE positioned on the support part 100 to about-80 ℃ to-60 ℃ by cooling the support part 100. When the display device DE is cooled by the cooling part 200, the heat dissipation carrier P20 may reduce a local temperature deviation of the display device DE. This can prevent the plasticity of the display panel portion P10 from being deformed by temperature variations.

The adhesive force of the adhesive film AF bonding the window W and the display panel P to each other may be reduced in the above temperature range. That is, by cooling the adhesive film AF to the above temperature range, the window W can be easily separated from the display panel P. The adhesive film AF may be one of Optically Clear Adhesive (OCA), Optically Clear Resin (OCR) and Pressure Sensitive Adhesive (PSA).

Referring to fig. 6, 13 and 14, in order to fix the window W into the receiving groove 130 of the support 100, the window fixing part 300 may fix a portion of the first area DA of the window W. The first and second contact bars 320 and 340 of the window fixing part 300 may press both side ends of the window W downward in the first direction (Z-axis), thereby fixing the window W to the supporting part 100.

Referring to fig. 15, the first and second

pressing members

510 and 530 of the window pressing part 500 may press the second area PA of the window W. The first and second

pressing members

510 and 530 may apply pressure to the second area PA of the window W in the first direction (Z-axis).

As shown in fig. 17, the second pressure applying member 530 may apply pressure to the second area PA of the window W. The second pressing member 530 may apply a momentary impact to the second area PA in a lower direction along the first direction (Z-axis). The second pressure applicator member 530 may apply a force such that the end of the second area PA of the window W is lowered to the first depth D1 with respect to the horizontal line L. At this time, the first depth D1 may be 3mm to 8 mm. When a momentary impact is applied to the second area PA of the window W of the cooled display device DE, peeling may occur between the display panel P and the window W located in the first area DA adjacent to the second area PA.

As shown in fig. 18, after the second pressure applying member 530 applies a momentary impact to the second area PA of the window W, the second pressure applying member 530 may be raised again to the home position.

As shown in fig. 19, the second pressing member 530 ascended to the home position again slowly presses the second area PA of the window W. At this time, the second pressing member 530 slowly presses the second area PA of the window W downward in the first direction (Z-axis). Thereby, the second area PA of the window W may be lowered by an extent of 3mm to 8mm downward in the first direction (Z-axis).

Then, as shown in fig. 16 and 20, the separation lever 900 may be moved in the second direction (X-axis) in a state where the second pressing member 530 presses the second area PA of the window W downward. At this time, the separation lever 900 may be moved in the second direction (X-axis) so as to be inserted between the display panel P and the window W. As described in fig. 17 to 19, it is a state in which partial peeling has been generated between the display panel P and the window W by the second pressure applying member 530. Accordingly, the separation lever 900 may be easily inserted between the peeled display panel P and the window W.

As shown in fig. 21 and 22, when the detaching lever 900 is continuously moved in the second direction (X-axis), the adhesive film AF and the display panel P may be detached from each other, and the display panel P may be completely detached from the window W. At this time, a portion of the adhesive film AF1 among the adhesive films AF located between the display panel P and the window W may be attached to the display panel P side.

Referring again to fig. 11, after performing the decomposition process of the window W and the display panel P as described above with reference to fig. 12 to 22, a washing process for removing the adhesive films AF, AF1 and impurities remaining on the window W and the display panel P may be performed (S120). At this time, the heat dissipation carrier P20 is adhered to the rear surface of the display panel portion P10, and the heat dissipation carrier P20 can protect the display panel portion P10 from the cleaning solution.

Then, the adhesive film AF is adhered to the front surface of the display panel P (S130). The adhesive film AF is used to bond the window W and the display panel P, and may include OCA, OCR, PSA, or the like. When the adhesive film AF and the display panel P are pressed by a pressing means such as a roller (roller) to adhere the adhesive film AF to the display panel P, the heat dissipation carrier P20 may prevent the display panel portion P10 from being pressed and deformed due to a step difference on the rear surface of the display panel portion P10.

Then, the window W is joined with the display panel P (S140). The window W and the display panel P may be joined by pressing the window W facing the front surface of the display panel P to which the adhesive film AF is adhered. At this time, the heat dissipation carrier P20 may offset the step difference on the rear surface of the display panel portion P10, thereby preventing the display panel portion P10 from being crushed and deformed by the pressure applied to the display panel portion P10.

That is, in the process of performing the cleaning process (S120), the process of adhering the adhesive film AF to the front surface of the display panel P (S130), and the process of bonding the window W and the display panel P (S140), the heat dissipation carrier P20 maintains the state of being adhered to the rear surface of the display panel part P10.

After the bonding of the window W and the display panel P is completed, the heat-dissipation carrier P20 may be separated from the display panel portion P10 (S150).

The drawings referred to so far and the detailed description of the invention described are merely examples of the present invention, which is used for the purpose of illustrating the present invention, and are not used for the purpose of limiting the meaning or limiting the scope of the present invention described in the claims. Accordingly, various modifications and equivalent other embodiments will be apparent to those skilled in the art. Therefore, the true technical scope of the present invention should be determined by the technical idea of the appended claims.

Claims

1. A display device comprising

A display panel section including a display unit including a plurality of pixels, a signal film unit on a rear surface of the display unit and transmitting a signal for image display of the display unit, and a board unit on the rear surface of the display unit and electrically connected to the display unit through the signal film unit; and

a heat dissipation carrier adhered to a rear surface of the display panel section,

wherein, the heat dissipation carrier includes:

a transparent protective film; and

a conductive resin layer on the transparent protective film,

wherein the conductive resin layer includes a semi-hardened resin having conductivity.

2. The display device according to claim 1, wherein the conductive resin layer is deformed corresponding to a step difference on the rear surface of the display panel section so that the heat dissipation carrier flattens the rear surface of the display panel section and reduces a local temperature deviation of the display panel section when the display panel section is cooled, and the conductive resin layer includes at least one of a conductive polymer, a metal powder, a graphite powder, polyacetylene, and polyaniline.

3. The rework method of the display device comprises the following steps:

a step of disassembling a display panel including a display panel portion for displaying an image and a heat dissipation carrier adhered to a rear surface of the display panel portion and a window joined to a front surface of the display panel;

a step of cleaning the window and the display panel;

a step of adhering an adhesive film to the front surface of the display panel;

a step of bonding the display panel and the window; and

and separating the heat dissipation carrier from the display panel section.

4. The rework method of display device of claim 3, wherein,

the step of disassembling the display panel and the window includes the step of cooling the display panel, an

The heat dissipation carrier reduces a local temperature deviation of the display panel when the display panel is cooled, and includes a transparent protective film and a conductive resin layer.

5. The rework method of display device of claim 4, wherein,

the conductive resin layer includes a semi-hardened resin having conductivity, and includes at least one of a conductive polymer, a metal powder, a graphite powder, polyacetylene, and polyaniline.

6. The rework method of display device of claim 4, wherein,

the heat dissipation carrier maintains a state of being adhered to the rear surface of the display panel part in the steps of cleaning the window and the display panel, adhering the adhesive film to the front surface of the display panel, and bonding the display panel and the window.

7. The rework method of display device of claim 3, wherein the step of disassembling the display panel and the window comprises:

a step of fixing the position of the window to a support portion that supports a part of the window;

a step of pressing a second region of the window, wherein the window includes a first region in which the display panel is positioned and the second region located at a periphery of the first region; and

a step of inserting a separation bar between the window and the display panel in a direction parallel to the second region of the window.

8. The rework method of display device of claim 7, wherein the step of disassembling the display panel and the window further comprises:

a step of cooling the support portion by a cooling portion located below the support portion; and

reducing local temperature deviation of the display panel by the heat dissipation carrier.

9. The rework method of display device of claim 8, wherein the step of pressing the second area of the window comprises:

a step of applying a momentary impact to the second region of the window to cause peeling between the display panel and the window; and

again slowly applying pressure to the second region of the window.

10. An apparatus for separating display devices, comprising:

a support portion facing a window and supporting a portion of the window, the window including a first region in which a display panel is positioned and a second region located at a periphery of the first region;

a cooling portion located below the support portion and cooling the support portion;

a window fixing portion that fixes a position of the window with respect to the support portion;

a display panel stopper on the support portion and spaced apart from the display panel at a predetermined interval;

a window pressing portion that presses the second region of the window; and

a separation lever moving in a direction parallel to the second region of the window to be inserted between the window and the display panel,

wherein the display panel includes:

a display panel section for displaying an image; and

a heat dissipation carrier adhered to a rear surface of the display panel section, and including a transparent protective film and a heat dissipation carrier.