KR102307732B1 - Display cooling apparatus and display separating method - Google Patents

Abstract

Disclosed are a cooling device for a display unit and a method for preventing re-adhesion of the display unit. A cooling apparatus for a display unit of the present invention includes: a cooling chamber installed in plurality so that the display unit is input and cooled; a cooling door installed to open and close each of the plurality of cooling chambers; a cooling panel unit installed in a plurality of cooling chambers; and temperature control heaters respectively installed in the plurality of cooling chambers.

Description

A cooling device for a display unit and a method for preventing re-adhesion of the display unit {DISPLAY COOLING APPARATUS AND DISPLAY SEPARATING METHOD}

The present invention relates to a cooling device for a display unit and a method for preventing re-adhesion of a display unit, and more particularly, to a cooling device for a display unit capable of preventing damage to a screen display module and a method for preventing re-adhesion of a display unit.

In general, a display unit is installed in a portable terminal. The display unit includes a screen display module and a cover glass. A cover glass is attached to the outer surface of the screen display module by an optical adhesive layer. The screen display module consists of a thin film transistor, a photodiode layer and a polarizing layer, or a liquid crystal, a color filter and a polarizing layer stacked.

When a cell defect or a pixel defect occurs in the screen display module, the screen display module and the cover glass are separated and the screen display module and the cover glass are recycled.

However, in the prior art, when the screen display module and the cover glass are heated to a high temperature and then the cover glass is separated from the screen display module, the optical adhesive layer is not separated and the screen display module is separated as one of the adhesive layers inside the screen display module is separated. may be damaged.

In addition, in a low temperature state, the strength of the adhesive layer inside the screen display module is relatively weaker than the strength of the optical adhesive layer of the cover glass. Accordingly, when the screen display module is separated in a low temperature state, the screen display module may be damaged as one of the adhesive layers inside the screen display module is separated by the pressure applied by the separation knife.

The background technology of the present invention is disclosed in Korean Patent Application Laid-Open No. 2010-0034149 (published on October 28, 2010, title of the invention: a method for separating and cleaning a touch sensing unit for regeneration of a touch sensing unit).

The present invention was created to improve the above problems, and an object of the present invention is to provide a cooling device for a display unit capable of preventing damage to a screen display module and a method for preventing re-adhesion of the display unit.

A cooling apparatus for a display unit according to the present invention includes: a cooling chamber installed in plurality so that the display unit is input and cooled; a cooling door installed to open and close each of the plurality of cooling chambers; a cooling panel unit installed in the plurality of cooling chambers; and temperature control heaters respectively installed in the plurality of cooling chambers.

The temperature control heater may be installed in the cooling panel unit to correspond to the plurality of cooling chambers.

The cooling device for the display unit may further include a gas injection unit disposed inside the cooling chamber and forming a positive pressure to block external air from flowing into the cooling chamber when the cooling door is opened.

A heat exchange blocker may be installed at a peripheral portion of the temperature control heater to prevent the heat of the temperature control heater from being transmitted to the cooling panel unit.

The heat exchange blocking part may be a heat blocking member installed to surround the circumference of the temperature control heater.

The heat exchange blocking portion may be a heat blocking space formed to surround the periphery of the temperature control heater.

A method for preventing re-adhesion of a display unit according to the present invention comprises: inputting a display unit in which a heated portion of an optical adhesive layer and a cover glass are separated by a local separation unit into a cooling device; cooling the display unit in the cooling device; and maintaining the cooling device at a preset temperature as the temperature control heater is driven.

The cooling device may include a plurality of cooling chambers, the plurality of cooling chambers may be installed to be cooled by a single cooling panel, and the temperature control heater may be disposed in each of the cooling chambers.

When the cooling door of the cooling chamber is opened, the display unit may be drawn out together with the cooling door while being seated on the cooling jig.

When the cooling door is opened, the gas injection unit may form a positive pressure to block the inflow of external air into the cooling chamber.

A screen display module of the display unit may be in contact with the cooling jig.

According to the present invention, since one end of the optical adhesive layer is locally heated by the heating unit, the optical adhesive layer can be easily separated as the hardness of one end of the optical adhesive layer is reduced. In addition, since the screen display module is hardly heated by the heat of the heating part, it is possible to prevent the screen display module from being damaged by the heat of the heating part.

Further, according to the present invention, since the seating stage is cooled by air, the display unit is cooled by the cold air of the seating stage. Accordingly, it is possible to prevent the screen display module of the display unit from being heated by the heat of the heating unit.

In addition, according to the present invention, since the display unit is cooled in the cooling device, it is possible to prevent the optical adhesive layer from being re-adhesive to the screen display module.

Further, according to the present invention, since the display unit is transferred to the glass separation device in a state of being seated on the cooling jig, the display unit is transferred while being cooled by the cooling jig. Therefore, even if the display unit is in contact with external air, it is possible to delay the rise of the optical adhesive layer to a re-adhesive temperature.

In addition, according to the present invention, since the glass separation device separates the optical adhesive layer and the cover glass by spraying a separation material, the optical adhesive layer and the cover glass can be easily separated.

1 is a cross-sectional view illustrating a display unit according to an embodiment of the present invention.
2 is a block diagram illustrating an apparatus for separating a display unit according to an embodiment of the present invention.
3 is a block diagram schematically showing a pre-processing apparatus in the display unit separation apparatus according to an embodiment of the present invention.
4 is a configuration diagram schematically illustrating a state in which the local separation unit locally separates one end of the optical adhesive layer in the pre-processing apparatus of the display unit separation apparatus according to an embodiment of the present invention.
5 is a configuration diagram schematically showing a cooling device in the display unit separation device according to an embodiment of the present invention.
6 is a configuration diagram schematically illustrating an internal structure of a cooling device in the display unit separation device according to an embodiment of the present invention.
7 is a configuration diagram schematically illustrating a cooling chamber of a cooling device in a display unit separation device according to an embodiment of the present invention.
8 is a configuration diagram schematically illustrating a state in which the cooling door is opened in the display unit separation device according to an embodiment of the present invention.
9 is a configuration diagram schematically illustrating that the cooling chamber is installed in a plurality of layers in the display unit separation device according to an embodiment of the present invention.
10 is a configuration diagram schematically illustrating a cooling jig in the display unit separation device according to an embodiment of the present invention.
11 is a graph illustrating an increase in the temperature of the display unit when the display unit is not seated on the cooling jig in the display unit separating apparatus according to an embodiment of the present invention.
12 is a graph illustrating an increase in the temperature of the display unit when the display unit is seated on the cooling jig in the display unit separating apparatus according to an embodiment of the present invention.
13 is a configuration diagram schematically illustrating a glass separation device in the display unit separation device according to an embodiment of the present invention.
14 is a configuration diagram schematically illustrating a state in which the glass separation unit separates the optical adhesive layer in the glass separation apparatus in the display unit separation apparatus according to an embodiment of the present invention.
15 is a configuration diagram schematically illustrating a state in which a separation material is sprayed when a glass separation unit separates an optical adhesive layer in a glass separation apparatus in a display unit separation apparatus according to an embodiment of the present invention.
16 is a configuration diagram schematically illustrating an adhesive layer removing unit in the display unit separating apparatus according to an embodiment of the present invention.
17 is a configuration diagram schematically illustrating a foreign material suction unit in the display unit separation device according to an embodiment of the present invention.
18 is a configuration diagram schematically illustrating a glass seating unit and an adhesive layer removing roller in the display unit separation device according to an embodiment of the present invention.
19 is a configuration diagram schematically illustrating a state in which a cover glass is seated on a glass receiving unit in the display unit separating device according to an embodiment of the present invention.
20 is a configuration diagram schematically illustrating a state in which the optical adhesive layer remaining on the glass mounting portion is removed by the adhesive layer removing roller in the display unit separation device according to an embodiment of the present invention.
21 is a configuration diagram schematically illustrating a state in which the optical adhesive layer removed by the adhesive layer removal roller is discharged to the adhesive layer discharge container in the display unit separation device according to an embodiment of the present invention.
22 is a flowchart illustrating a display part separation method of an apparatus for separating a display part according to an embodiment of the present invention.

Hereinafter, an embodiment of a cooling device for a display unit and a method for preventing re-adhesion of a display unit according to the present invention will be described with reference to the accompanying drawings. In the process of explaining the cooling device for the display unit and the method for preventing re-adhesion of the display unit, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

1 is a cross-sectional view illustrating a display unit according to an embodiment of the present invention, and FIG. 2 is a block diagram illustrating an apparatus for separating a display unit according to an embodiment of the present invention.

1 and 2 , the display unit separating apparatus according to an embodiment of the present invention includes a pre-processing unit 110 , a cooling unit 120 , and a glass separating unit 130 .

The display unit 10 includes a screen display module 11 and a cover glass 15 . The screen display module 11 and the cover glass 15 are attached by an optical adhesive optical adhesive layer 13 . Optical adhesive The optical adhesive layer 13 is attached to the peripheral portion of the screen display module 11 and the cover glass (15). The optical adhesive optical adhesive layer 13 is formed in the shape of a rectangular frame. Organic light emitting diodes (OLEDs) may be applied as the screen display module 11 . Of course, as the screen display module 11 , quantum dot light emitting diodes (QLEDs), liquid crystal displays (LCDs), etc. may be applied.

A cooling jig seating part 103 is installed on one side of the pretreatment device 110, a cooling device 120 is installed on one side of the cooling jig seating part 103, and a glass separating device ( 130) is installed, and the adhesive layer removing unit 141 is installed on one side of the glass separating device 130 .

A knife magazine 105 is installed in the pretreatment device 110 to transfer the display unit 10 and the local separation unit 117 to the cooling jig 131 . A cooling jig 131 transfer unit (not shown) is installed to supply the cooling jig 131 to the cooling jig seating unit 103 .

The adhesive layer removing unit 141 removes the optical adhesive layer 13 remaining in the screen display module 11 from which the cover glass 15 is separated. In addition, the optical adhesive layer 13 remaining on the separated cover glass 15 is removed. The cover glass 15 and the screen display module 11 from which the optical adhesive layer 13 is completely removed are cleaned by the cleaning device 107 and then discharged to the discharge device 108 .

3 is a block diagram schematically illustrating a pre-processing apparatus in the display unit separating apparatus according to an embodiment of the present invention, and FIG. 4 is an optical local separation unit in the pre-processing apparatus of the display unit separating apparatus according to an embodiment of the present invention. It is a configuration diagram schematically showing a state in which one end of the adhesive layer is locally separated.

3 and 4 , the preprocessor 110 includes a heating unit 111 , a seating stage 114 , and a local separation unit 117 .

The heating unit 111 locally heats the optical adhesive layer 13 for bonding the screen display module 11 and the cover glass 15 . An electric wire (not shown) to be connected to a printed circuit board (not shown) is connected to an end of the screen display module 11 on the touch electrode connection part (not shown) side. The touch electrode connection unit includes a bezel area in which a camera (not shown) is to be installed.

The heating unit 111 is a heating heater that locally heats the end of the optical adhesive layer 13 . The heating unit 111 is elongated in the width direction of the screen display module 11 so as to locally heat the end of the peripheral portion of the screen display module 11 . Since the heating unit 111 locally heats the end of the optical adhesive layer 13 , it is possible to prevent the screen display module 11 from being heated by the heat of the heating unit 111 . Accordingly, since the adhesive layer of the screen display module 11 is prevented from being softened by the heat of the heating unit 111 , the screen display module 11 is damaged when the cover glass 15 is separated from the screen display module 11 . can be prevented from becoming

The heating unit 111 is locally heated by about 3-10 mm from the end of the optical adhesive layer 13 . The heating temperature of the heating unit 111 is set within the range of 50-100°C. As the optical adhesive layer 13 is heated to a heating temperature, the hardness of the optical adhesive layer 13 can be reduced, so that the optical adhesive layer 13 can be easily separated from the screen display module 11 .

At this time, the heating unit 111 locally heats one end 13a of the optical adhesive layer 13 on the touch electrode connection side. Transmission prevention paint (not shown) is applied to the touch electrode connection part to prevent light from being transmitted to the outside of the screen display module 11 .

The cover glass 15 of the display unit 10 is seated on the seating stage 114 and the cover glass 15 is cooled. A cooling line 116 through which air flows to cool the cover glass 15 is installed on the seating stage 114 . A plurality of adsorption ports 139 are installed on the mounting stage 114 to adsorb the substrate by vacuum pressure.

The local separation unit 117 locally separates the heated portion of the optical adhesive layer 13 and the cover glass 15 . Since the local separation unit 117 locally separates the heated portion of the optical adhesive layer 13 and the cover glass 15 , almost no external force is applied to the screen display module 11 by the local separation unit 117 . . Accordingly, it is possible to prevent the screen display module 11 from being damaged when the optical adhesive layer 13 and the cover glass 15 are locally separated.

The local separation unit 117 may be a separation plate inserted between the heated portion of the optical adhesive layer 13 and the cover glass 15 . The separation plate may be made of a flexible thin film. In addition, the separation plate may be made of a thin stainless steel panel. The separation plate may be made of a low-hardness resin material to prevent damage to the screen display module 11 . The separation plate may be made of various materials as long as the optical adhesive layer 13 and the cover glass 15 are locally separated.

In addition, the local separation unit 117 may be a fluid injection plate that injects a fluid between the heated portion of the optical adhesive layer 13 and the cover glass 15 . Since the fluid injection plate injects the fluid between the optical adhesive layer 13 and the cover glass 15, the heated portion of the optical adhesive layer 13 may be locally separated by the injection pressure of the fluid. The fluid injected from the local separation unit 117 may be variously selected such as air, nitrogen, and the like.

5 is a block diagram schematically showing a cooling device in a display unit separating device according to an embodiment of the present invention, and FIG. 6 is a schematic diagram showing an internal structure of the cooling device in a display unit separating device according to an embodiment of the present invention. 7 is a block diagram schematically illustrating a cooling chamber of a cooling device in a display unit separating apparatus according to an embodiment of the present invention, and FIG. 8 is a display unit according to an embodiment of the present invention. It is a configuration diagram schematically showing a state in which the cooling door is opened in the separation device, and FIG. 9 is a configuration diagram schematically showing that the cooling chamber is installed in a plurality of layers in the display separation device according to an embodiment of the present invention am.

5 to 9 , the cooling device 120 cools the display unit 10 in which the optical adhesive layer 13 and the cover glass 15 are locally separated. At this time, the display unit 10 is moved to the cooling device 120 in a state where the local separation unit 117 is inserted into the separated portions of the optical adhesive layer 13 and the cover glass 15 . The display unit 10 is moved to the cooling device 120 in a state where the knife magazine 105 supports the local separation unit 117 . Since the display unit 10 is cooled by the cooling device 120 , it is possible to prevent the locally separated optical adhesive layer 13 from increasing in viscosity to have re-adhesive properties.

The cooling device 120 includes a cooling chamber 121 , a cooling door 122 , a cooling panel unit 124 , and a temperature control heater 125 .

A plurality of cooling chambers 121 are arranged inside the case. The cooling chambers 121 may be arranged in a line or to form a plurality of layers (see FIG. 9 ).

The cooling door 122 is installed to open and close each of the plurality of cooling chambers 121 . One cooling door 122 is installed for each cooling chamber 121 .

The cooling panel unit 124 is installed in the plurality of cooling chambers 121 . At this time, one cooling panel unit 124 is installed in the case, and a plurality of cooling chambers 121 are disposed on the upper surface of the cooling panel unit 124 . Accordingly, as one cooling panel unit 124 is cooled, the inside of the plurality of cooling chambers 121 may be cooled.

Of course, one cooling panel unit 124 may be installed for each cooling chamber 121 . In this case, the cooling temperature of the cooling panel unit 124 is individually controlled.

The temperature control heater 125 is installed in each of the plurality of cooling chambers 121 . At this time, the temperature control heater 125 is installed in the cooling panel unit 124 to correspond to the plurality of cooling chambers 121 . When the internal temperature of the cooling chamber 121 is lower than the preset temperature, as power is supplied to the temperature control heater 125, the temperature control heater 125 is heated to raise the temperature of the cooling chamber 121 to the preset temperature. make it Accordingly, the internal temperature of the cooling chamber 121 may be constantly maintained within a preset temperature range.

The preset temperature range of the cooling chamber 121 is set to about -45 to -65°C. This preset temperature range is a temperature that can prevent the optical adhesive layer 13 from not having adhesiveness without damaging the screen display module 11 .

A heat exchange blocking unit 126 is installed at a peripheral portion of the temperature control heater 125 to prevent the heat of the temperature control heater 125 from being transmitted to the cooling panel unit 124 . Since the heat exchange blocking unit 126 blocks heat transfer between the temperature control heater 125 and the cooling panel unit 124 , the temperature of the cooling panel unit 124 can be precisely controlled.

The heat exchange blocking part 126 may be a heat blocking member installed to surround the circumference of the temperature control heater 125 . Since the heat blocking member seals the gap between the temperature control heater 125 and the cooling fan unit, it is possible to prevent the cold air of the cooling chamber 121 from leaking to the outside.

In addition, the heat exchange blocking part 126 may be a heat blocking space formed to surround the circumference of the temperature control heater 125 . The heat-blocking space is sealed by a separate sealing member (not shown) to prevent the cold air of the cooling chamber 121 from leaking to the outside through the heat-blocking space.

The cooling device 120 is disposed inside the cooling chamber 121 , and when the cooling door 122 is opened, a gas injection unit that forms a positive pressure to block the inflow of external air into the cooling chamber 121 . (128). Since the gas injection unit 128 forms a positive pressure inside the cooling chamber 121 when the cooling degree is opened, it is possible to prevent moisture from penetrating into the cooling chamber 121 . The gas spraying unit 128 may spray nitrogen to form a nitrogen curtain.

10 is a block diagram schematically illustrating a cooling jig in the display unit separating apparatus according to an embodiment of the present invention, and FIG. 11 is a display unit not seated on the cooling jig in the display unit separating apparatus according to an embodiment of the present invention. It is a graph showing the temperature rise of the display unit when not, and FIG. 12 is a graph showing the temperature rise of the display unit when the display unit is seated on the cooling jig in the display unit separating apparatus according to an embodiment of the present invention, and FIG. 13 is a configuration diagram schematically showing a glass separating device in a display unit separating device according to an embodiment of the present invention, and FIG. 14 is an optical glass separating unit in the glass separating device in the display unit separating device according to an embodiment of the present invention. It is a configuration diagram schematically showing a state of separating the adhesive layer, and FIG. 15 is a state in which the separation material is sprayed when the glass separating unit separates the optical adhesive layer in the glass separating device in the display unit separating device according to an embodiment of the present invention. 16 is a configuration diagram schematically showing the adhesive layer removal unit in the display unit separation apparatus according to an embodiment of the present invention, and FIG. 17 is a display unit separation apparatus according to an embodiment of the present invention. It is a configuration diagram schematically showing a foreign material suction unit in .

10 to 17 , the glass separation device 130 sprays a separation material into the gap between the optical adhesive layer 13 and the cover glass 15 in the display unit 10 drawn out from the cooling device 120 to cover the cover. The glass 15 is separated. Since the separation material is sprayed into the gap between the optical adhesive layer 13 and the cover glass 15 to separate the cover glass 15 , almost no external force is applied to the screen display module 11 except for the water injection pressure. Accordingly, it is possible to prevent the screen display module 11 from being damaged when the cover glass 15 is removed.

The glass separation device 130 includes a cooling jig 131 and a glass separation unit 135 .

The cooling jig 131 cools the display unit 10 . Since the cooling jig 131 cools the display unit 10 when the display unit 10 is withdrawn from the cooling chamber 121 , the time for the display unit 10 to reach -45°C can be extended. Therefore, when the screen display module 11 and the cover glass 15 are separated, it is possible to delay the rise in temperature so that the optical adhesive layer 13 has adhesiveness, so that the cover glass 15 in the screen display module 11 is removed. Allow sufficient time for separation.

For example, when the cooling jig 131 does not cool the display unit 10, when approximately 8 seconds have elapsed after the display unit 10 is pulled out, the temperature of the optical adhesive layer 13 is raised to about -45° C. The adhesive layer 13 has adhesiveness (refer to FIG. 11).

On the other hand, when the cooling jig 131 cools the display unit 10, when approximately 60 seconds have elapsed after the display unit 10 is pulled out, the temperature of the optical adhesive layer 13 rises to about -45° C. and the optical adhesive layer 13 ) has adhesiveness. Accordingly, it is possible to sufficiently secure a time for separating the cover glass 15 from the screen display module 11 (see FIG. 12 ).

The glass separation unit 135 is a separation member 136 that widens the gap between the optical adhesive layer 13 and the screen display module 11 in the display unit 10, and a separation material in the gap opened by the separation member 136. A separation material injection nozzle 137 for separating the cover glass 15 by spraying is provided. Since the separation member 136 widens the gap between the optical adhesive layer 13 and the screen display module 11, the separation material sprayed from the separation material injection nozzle 137 can be intensively sprayed into the gap. Accordingly, the cover glass 15 can be easily separated by the jetting force of the separation material.

The glass separating device 130 further includes a glass moving part 138 for moving the cover glass 15 separated from the screen display module 11 to the outside of the screen display module 11 . At this time, the glass moving unit 138 may adsorb the cover glass 15 and then invert it to the outside of the screen display module 11 . Since the glass moving unit 138 moves the cover glass 15 to the outside of the screen display module 11 , the optical adhesive layer 13 remaining on the screen display module 11 can be easily separated.

The glass separation device 130 further includes an adhesive layer removing unit 141 for removing the optical adhesive layer 13 remaining on the screen display module 11 by spraying the removal beads and gas to the screen display module 11 . Since the adhesive layer remover 141 removes the optical adhesive layer 13 remaining on the screen display module 11 by spraying the removal beads and gas, the optical adhesive layer 13 can be removed cleanly. In addition, it is possible to prevent the screen display module 11 from being scratched or from being damaged when the optical adhesive layer 13 is removed.

The removal bead may be a dry ice bead. Therefore, since the dry ice beads evaporate into the air after removing the optical adhesive layer 13, there is no need to collect the removed beads.

The glass separation device 130 further includes an optical adhesive layer 13 separated by the adhesive layer removing part 141 and a foreign substance suction part 143 for sucking gas. Since the foreign material suction part 143 sucks the separated optical adhesive layer 13 and gas, it is possible to prevent the separated optical adhesive layer 13 from being re-adhesive to the screen display module 11 .

The glass separating device 130 further includes a droplet ejection unit 145 installed in the foreign material suction unit 143 to inject droplets onto the optical adhesive layer 13 sucked into the foreign material suction unit 143 . As the suctioned optical adhesive layer 13 is wetted with droplets, the adhesiveness of the optical adhesive layer 13 can be removed.

18 is a block diagram schematically illustrating a glass seating part and an adhesive layer removing roller in a display part separating device according to an embodiment of the present invention, and FIG. 19 is a glass seating in a display part separating device according to an embodiment of the present invention. It is a configuration diagram schematically showing a state in which the cover glass is seated on the part, and FIG. 20 is a state in which the optical adhesive layer remaining on the glass seat part is removed by the adhesive layer removing roller in the display part separation device according to an embodiment of the present invention. is a configuration diagram schematically showing, and Figure 21 is a configuration diagram schematically showing a state in which the optical adhesive layer removed by the adhesive layer removing roller in the display unit separation device according to an embodiment of the present invention is discharged to the adhesive layer discharge bin .

18 to 21 , the display unit separation device further includes a glass mounting unit 150 and an adhesive layer removing roller 155 .

The glass mounting part 150 is formed in a plate shape so that the cover glass 15 is mounted. The cover glass 15 moved by the glass moving unit 138 is seated on the glass receiving unit 150 . That is, the glass moving unit 128 inverts the cover glass 15 separated from the screen display module 11, and the inverted cover glass 15 is placed on the glass receiving unit 150 by a pickup device (not shown). is settled At this time, the cover glass 15 is seated on the glass mounting part 150 so that the optical adhesive layer 13 faces upward.

A vacuum adsorption unit 151 is installed in the glass mounting unit 150 so that the cover glass 15 is adsorbed to the glass mounting unit 150 . The vacuum adsorption unit 151 positions and fixes the cover glass 15 to the glass mounting unit 150 by vacuum pressure. The surface of the glass mounting part 150 is formed of a material having frictional force to prevent the cover glass 15 from sliding.

The adhesive layer removing roller 155 is formed to be longer than the width direction length of the glass mounting part 150 . The adhesive layer removing roller 155 is connected to a roller rotating device (not shown) and a roller transport device (not shown). A friction layer (not shown) is formed on the surface of the adhesive layer removing roller 155 . It is transferred while being rotated in a state of being in close contact with the cover glass 15 so as to remove the optical adhesive layer 13 remaining on the glass mounting part 150 . Since the adhesive layer removing roller 155 is rotated and transported, the optical adhesive layer 13 remaining on the cover glass 15 is removed while being dried in a roll form by the adhesive layer removing roller 155 .

The display unit separation device further includes an anti-re-adhesion plate 153 disposed on one side of the glass mounting part 150 and preventing the optical adhesive layer 13 removed by the adhesive layer removal roller 155 from being re-adhesive. . The anti-adhesive plate 153 may be formed of a silicon material or a Teflon material in which the optical adhesive layer 13 removed from the cover glass 15 is not gradually formed.

The display separation device discharges the optical adhesive layer 13 by spraying air to the adhesive layer discharge tube 157 disposed on one side of the re-adhesion prevention plate 153 and the optical adhesive layer 13 removed from the cover glass 15 . It further includes an adhesive layer discharge nozzle 156 for discharging to the barrel 157 . Since the adhesive layer discharge nozzle 156 discharges the optical adhesive layer 13 to the adhesive layer discharge tube 157, the optical adhesive layer 13 can be prevented from re-adhering to the glass mounting part 150 or the re-adhesion prevention plate 153. can

A method for separating a display unit according to an embodiment of the present invention configured as described above will be described.

22 is a flowchart illustrating a display part separation method of a display part separation apparatus according to an embodiment of the present invention.

Referring to FIG. 22 , the display unit 10 is mounted on the mounting stage 114 . At this time, the heating unit 111 corresponds to the end of the optical adhesive layer 13 for bonding the screen display module 11 and the cover glass 15 . In addition, the cover glass 15 of the display unit 10 is in contact with the upper surface of the mounting stage 114 .

The upper surface of the seating stage 114 is sucked by the display unit 10 by the vacuum suction port 115 of the seating stage 114 . As air flows in the seating stage 114 , the seating stage 114 is cooled.

As the heating unit 111 is driven, the optical adhesive layer 13 bonding the screen display module 11 and the cover glass 15 to the display unit 10 is locally heated (S11). Since the one end 13a of the optical adhesive layer 13 is locally heated by the heat of the heating unit 111, the optical adhesive layer 13 is easy as the hardness of the one end 13a of the optical adhesive layer 13 is reduced. become separable. In addition, since the screen display module 11 is hardly heated by the heat of the heating unit 111 , it is possible to prevent the screen display module 11 from being damaged by the heat of the heating unit 111 .

In addition, since the seating stage 114 is cooled by air, the display unit 10 is cooled by the cold air of the seating stage 114 . Accordingly, it is possible to prevent the screen display module 11 of the display unit 10 from being heated by the heat of the heating unit 111 .

The heated portion of the optical adhesive layer 13 and the cover glass 15 are locally separated (S12). At this time, when the local separation part 117 is a separation plate, the optical adhesive layer 13 is locally separated as the local separation part 117 is inserted between the heated portion of the optical adhesive layer 13 and the cover glass 15 . . In addition, when the local separation unit 117 is a fluid injection plate, the optical adhesive layer 13 is locally separated as the fluid is injected between the heated portion of the optical adhesive layer 13 and the cover glass 15 .

After the heated portion of the optical adhesive layer 13 and the cover glass 15 are locally separated, the display unit 10 and the local separation unit 117 are transferred to the cooling device 120 by the knife magazine 105 .

The display unit 10 is put into the cooling device 120 to cool it (S13). At this time, the cooling jig 131 is on standby in the cooling jig seating unit 103 , and the display unit 10 in which the optical adhesive layer 13 is locally separated is transferred from the seating stage 114 to the cooling jig 131 , the knife magazine 105 . ) is transported by When the display unit 10 is seated on the cooling jig 131 , after the cooling door 122 is opened, the cooling jig 131 on which the display unit 10 is seated is inserted into the cooling chamber 121 . At this time, the screen display module 11 of the display unit 10 is in contact with the upper surface of the cooling jig 131 . As the cooling door 122 is closed, the display unit 10 is cooled inside the cooling chamber 121 . Since the display unit 10 is cooled in the cooling chamber 121 , it is possible to prevent the optical adhesive layer 13 from being re-adhesive to the screen display module 11 .

As the cooling panel unit 124 is driven, the inside of the cooling chamber 121 is maintained at a preset temperature, for example, about -55°C. In addition, a temperature sensor is installed in each cooling chamber 121 to measure the temperature of the cooling chamber 121 . When the cooling chamber 121 is cooled to a temperature lower than the preset temperature, the temperature control heater 125 is driven to increase the temperature of the cooling chamber 121 to the preset temperature. When the cooling chamber 121 reaches the preset temperature again, the power supplied to the temperature control heater 125 is cut off. Accordingly, the cooling chamber 121 may be maintained in a preset temperature range by on/off control of the temperature control heater 125 .

A plurality of temperature control heaters 125 are installed on the cooling panel unit 124 , and a heat exchange blocking unit 126 is installed around the temperature control heater 125 to prevent heat exchange with the cooling panel unit 124 . The heat exchange blocking unit 126 prevents the heat of the temperature control heater 125 from being transmitted to the cooling panel unit 124 .

The display unit 10 is taken out from the cooling chamber 121 of the cooling device 120 (S14). At this time, when the cooling door 122 is opened, the display unit 10 is drawn out of the cooling chamber 121 at the same time as the door is opened. At this time, the display unit 10 is drawn out while seated on the cooling jig 131 . The screen display module 11 of the display unit 10 is in contact with the upper surface of the cooling jig 131 , and the cover glass 15 is disposed to face upward.

When the cooling door 122 is opened, the gas injection unit 128 injects gas into the cooling chamber 121 to form a gas curtain and positive pressure (S15). At this time, nitrogen gas may be applied as the gas. The gas curtain blocks external air from flowing into the cooling chamber 121 . Accordingly, it is possible to prevent moisture or frost from entering the inner surface of the cooling chamber 121 .

The cooling jig 131 on which the display unit 10 is seated is transferred to the glass separating device 130 by a jig transfer device (not shown). The glass separating device 130 includes a cooling jig 131 , a glass separating part 135 , and a glass moving part 138 . Since the display unit 10 is transferred to the glass separation device 130 while seated on the cooling jig 131 , the display unit 10 is transferred while being cooled by the cooling jig 131 . Therefore, even when the display unit 10 comes into contact with external air, it takes about 60 seconds until the optical adhesive layer 13 is raised to a re-adhesive temperature. Accordingly, after the display unit 10 is discharged from the cooling chamber 121 , the cover glass 15 may be separated before the optical adhesive layer 13 reaches the re-adhesive temperature. After the display unit 10 is discharged from the cooling chamber 121 , it takes significantly shorter than 60 seconds until the separation of the cover glass 15 is completed.

The glass separation device 130 separates the optical adhesive layer 13 and the cover glass 15 by spraying a separation material into the separated gap between the optical adhesive layer 13 and the cover glass 15 (S16). Since the separation material is sprayed to separate the optical adhesive layer 13 and the cover glass 15 , the optical adhesive layer 13 and the cover glass 15 can be easily separated. Air is suggested as the separation material.

At this time, the separation member 136 is inserted into the separated gap between the optical adhesive layer 13 and the cover glass 15 to widen the gap, and the separation material is sprayed into the gap between the optical adhesive layer 13 and the cover glass 15 . The nozzle 137 sprays the separation material to separate the optical adhesive layer 13 and the cover glass 15 . Since the separation member 136 widens the gap between the optical adhesive layer 13 and the cover glass 15 , the separation material sprayed from the separation material injection nozzle 137 may be intensively sprayed into the gap. Accordingly, the optical adhesive layer 13 and the cover glass 15 are more easily separated, and it is possible to prevent the screen display module 11 from being damaged. In addition, since the separation speed of the optical adhesive layer 13 and the cover glass 15 is increased, it is possible to prevent the optical adhesive layer 13 from being raised to a re-adhesive temperature as the separation material is rubbed with the sprayed material. Therefore, it is possible to prevent the separation of the optical adhesive layer 13 from being re-adhesive to the screen display module 11 .

When the optical adhesive layer 13 and the cover glass 15 are separated, the screen display module 11 is adsorbed by the vacuum line 133 of the cooling jig 131, so the screen display module 11 and the cover glass 15 It is possible to prevent movement in the cooling jig 131 by the pressing force of the temporary separation member 136 and the injection pressure of the separation material.

After the optical adhesive layer 13 and the cover glass 15 are completely separated from the screen display module 11, the glass moving unit 138 moves the cover glass 15 to the outside of the screen display module 11 (S17) . The glass moving unit 138 adsorbs the cover glass 15 and then inverts it to the outside of the screen display module 11 . The adsorption port 115 is formed in the glass moving part 138 to adsorb the cover glass 15 .

The optical adhesive layer 13 remaining on the screen display module 11 is removed (S18). At this time, the adhesive layer removal unit 141 removes the optical adhesive layer 13 from the screen display module 11 by spraying the removal beads and gas to the screen display module 11 . Since the removal beads are dry ice beads, the removal beads are evaporated into the air after the optical adhesive layer 13 is removed. Therefore, there is no need to recover or clean the removal beads from the screen display module 11 . In addition, since almost no physical pressure is applied to the screen display module 11 except for the removal bead and the blowing force of the gas, it is possible to prevent the screen display module 11 from being damaged. In addition, since the removal bead hits and removes the optical adhesive layer 13 , the optical adhesive layer 13 can be cleanly removed from the screen display module 11 .

The foreign material suction unit 143 sucks the optical adhesive layer 13 removed from the screen display module 11 (S19). The foreign material suction unit 143 is disposed opposite to the spraying direction in the adhesive layer removing unit 141 in the screen display module 11 . The foreign material suction unit 143 sucks the optical adhesive layer 13 and the gas removed while moving together with the adhesive layer removing unit 141 in a state spaced apart from the adhesive layer removing unit 141 by a predetermined interval. Since the foreign material suction part 143 sucks the removed optical adhesive layer 13, the temperature of the optical adhesive layer 13 to be removed may be increased to prevent re-adhesion to the screen display module 11 or surrounding structures.

The droplet ejection unit 145 injects droplets onto the optical adhesive layer 13 that is sucked into the foreign material suction unit 143 (S20). Since droplets are sprayed on the suctioned optical adhesive layer 13 , the re-adhesiveness of the optical adhesive layer 13 is removed by the droplets. Accordingly, it is possible to prevent the suctioned optical adhesive layer 13 from being re-adhesive inside the droplet ejection unit 145 .

The screen display module 11 and the cover glass 15 separated through the above process are transported to the cleaning device 107 and cleaned, and then discharged to the discharge device 108 .

In addition, when the screen display module 11 and the cover glass 15 are transferred from the glass separating device 130 , the cooling jig 131 positioned in the glass separating device 130 is again transferred by the cooling jig transfer unit (not shown). It returns to the cooling jig seating part 103 . As the plurality of cooling jigs 131 circulately move between the cooling jig seating unit 103 and the glass separating device 130 , the separation process of the display unit 10 may be continuously performed.

Meanwhile, the cover glass 15 inverted by the glass moving unit 128 is picked up by a pickup device (not shown) and then seated on the glass mounting unit 150 . At this time, the cover glass 15 is seated on the glass mounting unit 150 such that the surface on which the photosynthetic adhesive layer 13 is formed faces upward.

When the vacuum adsorption unit 151 is driven, the cover glass 15 is seated on the glass mounting unit 150 by the vacuum pressure of the vacuum adsorption unit 151 . In addition, the cover glass 15 is fixed so as not to move as it rubs against the glass seating part 150 .

The optical adhesive layer 13 remaining on the cover glass 15 is removed (S21). At this time, the adhesive layer removing roller 155 descends to be in close contact with the upper surface of the cover glass 15 . Then, the adhesive layer removing roller 155 is rotated and moved toward the anti-adhesive plate 153 to remove the optical adhesive layer 13 remaining on the cover glass 15 (S21). At this time, the optical adhesive layer 13 is removed while being dried in a roll form by being pushed by the adhesive layer removing roller 155 . The removed optical adhesive layer 13 is pushed by the adhesive layer removal roller 155 and moved to the anti-adhesive plate 13 .

The removed optical adhesive layer 13 is discharged to the adhesive layer discharge tube 157 (S22). At this time, air is sprayed on the optical adhesive layer 13 removed from the adhesive layer discharge nozzle 156 to discharge the optical adhesive layer 13 to the adhesive layer discharge tube 157 . Since the optical adhesive layer 13 is discharged to the adhesive layer discharge tube 157 , it is possible to prevent the optical adhesive layer 13 from being re-adhesive to the re-adhesive plate 153 or the glass mounting part 150 .

As described above, since the one end 13a of the optical adhesive layer 13 is locally heated by the heat of the heating unit 111, as the hardness of the one end 13a of the optical adhesive layer 13 decreases, the optical adhesive layer ( 13) is in a state where it can be easily separated. In addition, since the screen display module 11 is hardly heated by the heat of the heating unit 111 , it is possible to prevent the screen display module 11 from being damaged by the heat of the heating unit 111 .

In addition, since the seating stage 114 is cooled by air, the display unit 10 is cooled by the cold air of the seating stage 114 . Accordingly, it is possible to prevent the screen display module 11 of the display unit 10 from being heated by the heat of the heating unit 111 .

In addition, since the display unit 10 is cooled by the cooling device 120 , it is possible to prevent the optical adhesive layer 13 from being re-adhesive to the screen display module 11 .

In addition, since the display unit 10 is transferred to the glass separating device 130 in a state seated on the cooling jig 131 , the display unit 10 is transferred while being cooled by the cooling jig 131 . Therefore, even when the display unit 10 is in contact with external air, it is possible to delay the rise of the optical adhesive layer 13 to a re-adhesive temperature.

In addition, since the glass separation device 130 separates the optical adhesive layer 13 and the cover glass 15 by spraying a separation material, the optical adhesive layer 13 and the cover glass 15 can be easily separated.

Although the present invention has been described with reference to the embodiment shown in the drawings, this is merely exemplary, and it is understood that various modifications and equivalent other embodiments are possible by those of ordinary skill in the art. will understand

Accordingly, the true technical protection scope of the present invention should be defined by the claims.

10: display unit 11: screen display module
13: optical adhesive layer 13a: one end
15: cover glass 103: cooling jig seating part
105: knife magazine 107: cleaning device
108: discharge device 110: pretreatment device
111: heating unit 112: heat insulating member
114: seating stage 115: adsorption port
116: cooling line 117: local separation
120: cooling device 121: cooling chamber
122: cooling door 124: cooling panel unit
125: temperature control heater 126: heat exchange blocking unit
128: gas injection unit 130: glass separation device
131: cooling jig 132: jig body
133: vacuum line 135: glass separation unit
136: separation member 137: separation material injection nozzle
138: glass moving part 139: vacuum port
141: adhesive layer removal unit 143: foreign matter suction unit
145: droplet ejection unit 150: glass seating unit
151: vacuum adsorption unit 153: anti-re-adhesion plate
155: adhesive layer removal roller 156: adhesive layer discharge nozzle
157: adhesive layer discharge container

Claims (11)

a cooling chamber in which a plurality of display units are input and cooled;
a cooling door installed to open and close each of the plurality of cooling chambers;
a cooling panel unit installed in the plurality of cooling chambers and cooling the cooling chamber;
a temperature control heater installed in the plurality of cooling chambers, respectively, and heated as power is supplied to increase the temperature of the cooling chamber; and
and a heat exchange blocking unit installed at a periphery of the temperature control heater to block heat transfer between the temperature control heater and the cooling panel unit.
According to claim 1,
The temperature control heater is a cooling device for a display unit, characterized in that installed in the cooling panel unit so as to correspond to the plurality of cooling chambers.
According to claim 1,
and a gas injection unit disposed at the opening of the cooling chamber and configured to form a positive pressure to block external air from flowing into the cooling chamber when the cooling door is opened.
delete According to claim 1,
The cooling device for a display unit, characterized in that the heat exchange blocking member is a heat blocking member installed to surround the circumference of the temperature control heater.
According to claim 1,
The heat exchange blocking unit is a heat blocking space formed to surround the circumference of the temperature control heater.
a step of putting the display unit in which the heated portion of the optical adhesive layer and the cover glass are separated by a local separation unit into a cooling device;
cooling the display unit in the cooling device by driving a cooling panel unit; and
Including the step of heating the temperature control heater to maintain the cooling device at a preset temperature,
and the cooling device includes a heat exchange blocking unit installed on a periphery of the temperature control heater to block heat transfer between the temperature control heater and the cooling panel unit.

8. The method of claim 7,
The cooling device includes a plurality of cooling chambers,
A plurality of the cooling chambers are installed to be cooled by one cooling panel,
The method for preventing re-adhesion of the display unit, characterized in that the temperature control heater is disposed in each of the cooling chambers.
9. The method of claim 8,
When the cooling door of the cooling chamber is opened, the display unit is pulled out together with the cooling door while seated on the cooling jig.
10. The method of claim 9,
The method for preventing re-adhesion of the display unit, characterized in that when the cooling door is opened, the gas injection unit forms a positive pressure to block the inflow of external air into the cooling chamber.
10. The method of claim 9,
The method for preventing re-adhesion of the display unit, characterized in that the screen display module of the display unit is in contact with the cooling jig.

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