CN115691318A - Laminating device - Google Patents
Laminating device Download PDFInfo
- Publication number
- CN115691318A CN115691318A CN202210777070.2A CN202210777070A CN115691318A CN 115691318 A CN115691318 A CN 115691318A CN 202210777070 A CN202210777070 A CN 202210777070A CN 115691318 A CN115691318 A CN 115691318A
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- CN
- China
- Prior art keywords
- display panel
- shape
- pressure pad
- cover window
- plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The laminating apparatus includes: the pressure pad includes a pressure portion including a side surface portion having a hyperbolic shape in cross section, and an insertion portion protruding from an upper surface of the pressure portion, and presses the display panel so as to be attached to the display panel and the cover window having a circular shape with one side protruding on a plane. As the side surface portion has a hyperbolic shape, the defects of the display device manufactured by the laminating device are improved.
Description
Technical Field
The present invention relates to a laminating apparatus. In more detail, the present invention relates to a laminating apparatus for manufacturing a display apparatus.
Background
In recent years, flat Panel Displays (FPDs) that easily realize a large area and can realize a thin and lightweight have been widely used as display devices. As such flat panel displays, liquid Crystal Displays (LCDs), plasma Display Panels (PDPs), organic Light Emitting Displays (OLEDs), and the like are used.
Generally, the display device includes a display panel and a cover window for protecting the display panel. The display panel includes a driving element, a light emitting element, and the like. The cover window is attached to an entire face of the display panel. At this time, when the display panel is pressed by the pressing pad, the display panel and the cover window are bonded.
Disclosure of Invention
The invention aims to provide a laminating device for improving the defect of a display device.
However, the object of the present invention is not limited to the above-described object, and various extensions can be made within the scope not departing from the idea and field of the present invention.
In order to achieve the foregoing object of the present invention, a laminating apparatus according to an embodiment of the present invention may include: a pressure pad including a pressure portion including a side surface portion having a hyperbolic shape in cross section and an insertion portion protruding from an upper surface of the pressure portion, the pressure pad pressing the display panel so as to be attached to the cover window and the display panel having a circular shape with one side protruding on a plane; and a table fixed to the insertion portion.
In one embodiment, the side surface portion may extend at 360 degrees on a plane perpendicular with respect to a center of the pressure pad.
In one embodiment, the shape of the table may be the same as the shape of the pressure pad in a plane.
In one embodiment, the pressure pad and the table may have a circular shape on a plane, respectively.
In one embodiment, the cover window may have a shape in which an edge position is bent in cross section.
In an embodiment, it may be that the cover window has a circular shape in a plane.
In one embodiment, the compression pad may include an elastic substance.
In one embodiment, the elastic substance may include at least one selected from the group consisting of urethane, rubber, and synthetic resin.
In one embodiment, the pressure pad may have a uniform density throughout.
In order to achieve the foregoing object of the present invention, a laminating apparatus according to another embodiment of the present invention may include: a pressure pad including a pressure portion including a side portion having a hyperbolic shape in cross section and an insertion portion protruding from an upper surface of the pressure portion, the pressure pad pressing a display panel for a smart watch (smart watch) so as to be attached to a cover window; and a table fixed to the insertion portion.
In one embodiment, the side surface portion may extend at 360 degrees on a plane perpendicular to a center of the pressure pad.
In one embodiment, the shape of the table may be the same as the shape of the pressure pad in a plane.
In one embodiment, the pressure pad and the table may have a circular shape in a plane, respectively.
In one embodiment, the cover window may have a shape in which an edge position is bent in cross section.
In one embodiment, the cover window may have a circular shape in a plane.
In one embodiment, the compression pad may comprise an elastomeric material.
(effect of the invention)
In a laminating apparatus according to an embodiment of the present invention, a pressure pad of the laminating apparatus may include: a pressing portion including a side surface portion having a hyperbolic shape in cross section; and an insertion portion protruding from an upper surface of the pressing portion. Further, as the side surface portion of the laminating device has the hyperbolic shape, the flexible printed circuit substrate connected to the display panel may not contact the side surface portion while the laminating device is attaching the display panel to the cover window. Thus, the defects of the display device manufactured by the laminating device can be improved.
However, the effects of the present invention are not limited to the above-described effects, and various modifications can be made without departing from the scope of the idea and the field of the present invention.
Drawings
Fig. 1 is a perspective view showing a laminating apparatus according to an embodiment of the present invention.
Fig. 2 is a sectional view showing the laminating apparatus of fig. 1.
Fig. 3 is a sectional view for explaining the pressure pad of fig. 1.
Fig. 4 is a plan view illustrating a display device manufactured using the laminating apparatus of fig. 1.
Fig. 5 to 7 are sectional views illustrating a method of manufacturing the display device of fig. 4.
Description of the symbols:
1000: a laminating device; 100: a pressure pad; 110: a pressurization part; 120: an insertion portion; 200: a work table; 10: a side surface portion; DD: a display device; DP: a display panel; FPC: a flexible printed circuit substrate; IC: a driving chip; CW: and (6) covering the window.
Detailed Description
Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. The same reference numerals are used for the same components in the drawings, and the overlapping description of the same components is omitted.
Fig. 1 is a perspective view showing a laminating apparatus according to an embodiment of the present invention. Fig. 2 is a sectional view showing the laminating apparatus of fig. 1.
Referring to fig. 1 and 2, the laminating apparatus 1000 may include a pressure pad 100 and a table 200. As described later, a display panel (for example, the display panel DP shown in fig. 4) and a cover window (for example, the cover window CW shown in fig. 4) can be bonded by the laminating apparatus 1000.
The pressing pad 100 may include a pressing part 110 and an insertion part 120. In one embodiment, the pressing part 110 may include a side part 10 having a hyperbolic shape in cross section. That is, the pressing part 110 may include a shape that is recessed from the side toward the inside. In this case, the pressing part 110 may have a cylindrical shape with a side surface depressed. Further, the side surface part 10 may extend at 360 degrees on a plane perpendicular with respect to the center of the pressure pad 100.
The insertion part 120 may be defined as a portion of the insertion stage 200. The insertion part 120 may protrude from the upper surface of the pressurization part 110. Specifically, the insertion part 120 may extend in the second direction D2 from the upper surface of the pressing part 110. Further, the insertion part 120 may have a cylindrical shape.
In one embodiment, the compression pad 100 may comprise an elastomeric substance. Examples of the material that can be used for the pressure pad 100 include urethane, rubber, and synthetic resin. They may be used alone or in combination with each other. However, the configuration of the present invention is not limited thereto, and the pressure pad 100 may include other elastic substances.
In one embodiment, the compression pad 100 may have a uniform density throughout. That is, the ratio of the unit volume to the mass of the elastic substance in the first portion and the ratio of the unit volume to the mass of the elastic substance in the second portion of the pressing pad 100 may be the same as each other.
The pressure pad 100 may have a polygonal shape in a plane. In an embodiment, the pressure pad 100 may have a circular shape on a plane. However, the configuration of the present invention is not limited to this, and the pressure pad 100 may have another shape in a plane.
The table 200 may be disposed on the pressing pad 100. Specifically, the table 200 may be inserted into the insertion portion 120 of the pressing pad 100. That is, the table 200 may be fixed to the insertion portion 120 of the pressing pad 100.
The table 200 may have a polygonal shape on a plane. In an embodiment, the table 200 may have a circular shape on a plane. That is, the shape of the table 200 may be the same as the shape of the pressing pad 100 on a plane. However, the configuration of the present invention is not limited thereto, and the table 200 may have another shape on a plane.
In a laminating apparatus 1000 according to an embodiment of the present invention, a pressure pad 100 of the laminating apparatus 1000 may include: a pressing part 110 including a side part 10 having a hyperbolic shape in cross section; and an insertion part 120 protruding from an upper surface of the pressing part 110. Further, as the side surface portion 10 of the laminating apparatus 1000 has a hyperbolic shape, the flexible printed circuit substrate (for example, the flexible printed circuit substrate FPC shown in fig. 4) connected to the display panel DP may not contact the side surface portion 10 while the laminating apparatus 1000 bonds the display panel DP to the cover window CW. This improves the defects of the display device (for example, the display device DD shown in fig. 4) manufactured by the laminating device 1000.
Fig. 3 is a sectional view for explaining the pressure pad of fig. 1.
Referring to fig. 3, the pressing part 110 of the pressing pad 100 may have a first radius a and a second radius r according to position. For example, in cross section, the first radius a may be defined as the smallest radius among the radii that the pressing part 110 has, and the second radius r may be defined as the largest radius among the radii that the pressing part 110 has.
[ mathematical formula 1]
In the above equation 1, "S" may be an internal area of the side part 10 removed as the side part 10 has the hyperbolic shape, b may be a difference between the second radius r and the first radius a, and D may be a height of the pressing part 110 in the second direction D2. The internal area of the side portion 10 having a hyperbolic shape in cross section can be calculated by the above equation 1. Thus, the press pad 100 of the present invention can be manufactured by calculating the inner area of the side part 10 having a hyperbolic shape in cross section.
Fig. 4 is a plan view illustrating a display device manufactured using the laminating apparatus of fig. 1. Fig. 4 shows a state where the display device is viewed on a plane defined by the first direction D1 and the third direction D3. Here, the first direction D1, the second direction D2, and the third direction D3 may be orthogonal to each other.
Referring to fig. 4, the display device DD may include a display panel DP, a flexible printed circuit substrate FPC, a driving chip IC, and a cover window CW.
The display panel DP may display an image. The display panel DP may include a display area DA and a non-display area NDA surrounding at least a portion of the display area DA. The display area DA may be an area where an image is displayed. The non-display area NDA may be an area where no image is displayed.
The non-display area NDA may be divided into a first area A1 surrounding the display area DA and a second area A2 protruding from the first area A1. The second region A2 may protrude outward from the first region A1, and may have a narrower width than the first region A1.
The connection part 300 may be disposed at one side of the non-display area NDA. A plurality of pads electrically connected to various signal lines may be disposed at the connection portion 300.
The display panel DP may be a display panel DP suitable for a wearable device (wearable device). Thereby, the display panel DP may have a shape suitable for the wearable device. In an embodiment, the display panel DP may be a display panel DP suitable for a smart watch (smart watch).
In one embodiment, the display panel DP may have a circular shape protruding from one side on a plane. In this case, the display area DA may have a circular shape on a plane. However, the configuration of the present invention is not limited to this, and the display area DA may have a square shape, a shape including a straight line and a curved line, or the like on a plane.
The flexible printed circuit substrate FPC may be disposed on the display panel DP overlapping with the second area A2. The flexible printed circuit substrate FPC may be electrically connected to the display panel DP through the connection portion 300. The flexible printed circuit substrate FPC may function to generate and transmit signals required for driving the display area DA to the display area DA. The flexible printed circuit substrate FPC may have flexibility. Therefore, the flexible printed circuit substrate FPC can be bent and folded.
As will be described later, the cover window CW may be disposed over the entire surface of the display panel DP. In other words, the cover window CW may cover the entire face of the display panel DP. For example, the cover window CW may comprise glass or plastic.
In an embodiment, the cover window CW may have a circular shape on a plane. That is, the cover window CW may have a circular shape on a plane to correspond to the shape of the display panel DP. Further, as shown in fig. 7, the cover window CW may have a shape in which an edge position is bent in cross section. However, the configuration of the present invention is not limited to this, and when the display panel DP has another shape, the cover window CW may have another shape corresponding thereto.
Fig. 5 to 7 are sectional views illustrating a method of manufacturing the display device of fig. 4.
Referring to fig. 5, the table 200 may provide a space in which the pressure pad 100 is disposed. The table 200 may be disposed on the pressing pad 100. The table 200 may be inserted into the insertion portion 120 of the pressing pad 100.
The laminating apparatus 1000 including the pressing pad 100 and the table 200 may move up and down. That is, the laminating device 1000 may move in the second direction D2 and in a direction opposite to the second direction D2. The laminating device 1000 may move in a direction opposite to the second direction D2, thereby pressurizing the display panel DP. Specifically, the pressing pad 100 of the laminating apparatus 1000 may press the display panel DP. Thereby, the display panel DP and the cover window CW can be bonded.
As described above, in the case where the cover window CW has a shape in which an edge position is bent in cross section, the cover window CW may include the opening OP. For example, the height h of the opening OP may be about 3.5mm. However, the height h of the opening OP is not limited thereto.
Referring to fig. 6, when the pressure pad 100 of the laminating apparatus 1000 presses the display panel DP, the display panel DP may come into contact with the cover window CW in a state where at least a portion thereof is bent as the display panel DP is brought into close contact with the cover window CW. That is, the display panel DP may be bent to have a curved surface along the inner curved surface shape of the cover window CW by the laminating apparatus 1000.
Specifically, if the pressure pad 100 of the laminating apparatus 1000 presses the display panel DP, the contact surface 11 of the pressure pad 100 may contact the bottom surface 21 of the display panel DP, and the upper surface 22 of the display panel DP may contact the bottom surface 30 of the cover window CW. At this time, as the side surface portion 10 of the pressure pad 100 has a hyperbolic shape in cross section, the flexible printed circuit board FPC may not contact the side surface portion 10 of the pressure pad 100. That is, an empty space can be formed between the side surface portion 10 of the pressing pad 100 and the flexible printed circuit board FPC. Thus, the pressure pad 100 does not contact the flexible printed circuit board FPC, and thus, the defect of the display device DD can be improved.
Referring to fig. 7, after the display panel DP is attached to the cover window CW, the laminating apparatus 1000 may be removed. After removing the laminating device 1000, the flexible printed circuit substrate FPC may be bent backward in a state of being connected to the display panel DP. In other words, the flexible printed circuit board FPC may be attached to the bottom surface 21 of the display panel DP.
Thereby, the display device DD including the display panel DP, the flexible printed circuit board FPC, the driving chip IC, and the cover window CW can be manufactured.
As described above, although the present invention has been described with reference to the exemplary embodiments, it should be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the appended claims.
(availability in industry)
The present invention is applicable to manufacturing various display apparatuses that can be provided with a display device. For example, the present invention may be applied to manufacture high-resolution smart phones, mobile phones, smart tablets, smart watches, tablet PCs, navigation systems for vehicles, televisions, computer display screens, notebook computers, and the like.
Claims (10)
1. A laminating apparatus comprising:
a pressure pad including a pressure portion including a side surface portion having a hyperbolic shape in cross section and an insertion portion protruding from an upper surface of the pressure portion, the pressure pad pressing the display panel so as to be attached to the cover window and the display panel having a circular shape with one side protruding on a plane; and
and a table fixed to the insertion portion.
2. The laminating device according to claim 1,
the side portion extends at 360 degrees on a plane perpendicular to a center of the pressure pad.
3. The laminating device according to claim 1,
the shape of the worktable is the same as that of the pressure pad on a plane.
4. Laminating device according to claim 3,
the pressure pad and the table each have a circular shape on a plane.
5. Laminating device according to claim 4,
the cover window has a shape in which an edge position is bent in cross section.
6. Laminating device according to claim 4,
the cover window has a circular shape in a plane.
7. The laminating device according to claim 1,
the compression pad includes an elastomeric substance.
8. The laminating device according to claim 7,
the elastic substance includes at least one selected from the group consisting of urethane, rubber, and synthetic resin.
9. The laminating device according to claim 1,
the pressure pad has an overall uniform density.
10. A laminating apparatus comprising:
a pressure pad including a pressure portion including a side portion having a hyperbolic shape in cross section and an insertion portion protruding from an upper surface of the pressure portion, the pressure pad pressing the display panel for the smart watch so as to be bonded to the cover window; and
and a table fixed to the insertion portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2021-0099543 | 2021-07-29 | ||
| KR1020210099543A KR20230019274A (en) | 2021-07-29 | 2021-07-29 | Laminate device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115691318A true CN115691318A (en) | 2023-02-03 |
Family
ID=85060206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210777070.2A Pending CN115691318A (en) | 2021-07-29 | 2022-07-04 | Laminating device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20230019274A (en) |
| CN (1) | CN115691318A (en) |
-
2021
- 2021-07-29 KR KR1020210099543A patent/KR20230019274A/en unknown
-
2022
- 2022-07-04 CN CN202210777070.2A patent/CN115691318A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR20230019274A (en) | 2023-02-08 |
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