KR20170061804A - Method of manufacturing display device - Google Patents
Method of manufacturing display device Download PDFInfo
- Publication number
- KR20170061804A KR20170061804A KR1020150166712A KR20150166712A KR20170061804A KR 20170061804 A KR20170061804 A KR 20170061804A KR 1020150166712 A KR1020150166712 A KR 1020150166712A KR 20150166712 A KR20150166712 A KR 20150166712A KR 20170061804 A KR20170061804 A KR 20170061804A
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- South Korea
- Prior art keywords
- transparent member
- bending
- bent
- display device
- flat
- Prior art date
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A method of manufacturing a foldable display device folded or unfolded about a folding axis extending in one direction comprises the steps of providing a transparent member bent along a bending axis extending in one direction, RTI ID = 0.0 > a < / RTI >
Description
The present invention relates to a display device manufacturing method, and more particularly, to a method of manufacturing a display device.
The display device displays various images on the display screen to provide information to the user. Generally, the display module displays information within the allocated screen. BACKGROUND ART [0002] Recently, a foldable display device having a flexible display member that can be bent is being developed.
Foldable display devices can be folded or unfolded to have the same effect as viewing a book. The folder-type display device, which can be variously changed in shape, can be carried regardless of the existing screen size, and the user convenience is improved.
Therefore, the present invention relates to a method of manufacturing a foldable display device with improved reliability.
A method of manufacturing a display device for manufacturing a foldable display device folded or unfolded around a folding axis extending in one direction includes the steps of providing a transparent member bent along the bending axis extending in one direction, And bonding the protection member to the protection member in a flat state.
The bended transparent member may be glass.
The thickness of the bent transparent member may be 100 탆 or less.
The step of providing the bendable transparent member may include providing a flat transparent member, heat treating the flat transparent member, and bending the heat treated flat transparent member to form the bendable transparent member . ≪ / RTI >
The heat treatment may be performed at a temperature of 600 to 800 degrees Celsius.
The method of manufacturing a display device according to an embodiment of the present invention further includes slow cooling the heat-treated flat transparent member, bending the slowly cooled transparent member along the bending axis, A transparent member can be formed.
The heat-treated flat transparent member may be bonded to the jig and bent.
The jig may be robot arms coupled to both ends of the heat treated flat transparent member.
The jig may be a refractory brick.
INDUSTRIAL APPLICABILITY According to the present invention, a foldable display device can be manufactured using a bent transparent member having a folding angle. The bent transparent member can function as a window of the display device.
By forming the foldable display device using the bent transparent member, the folding stress applied to the window when the foldable display device is folded can be reduced. Thus, the deformation of the window is reduced, and the reliability of the display device can be improved.
1 is an exploded perspective view of a display device according to an embodiment of the present invention.
2A to 2C are combined perspective views of a display device according to an embodiment of the present invention.
FIGS. 3A through 3C are cross-sectional views illustrating shapes of a bending transparent member according to an embodiment of the present invention. FIG.
4 is a perspective view showing an embodiment of a display device according to an embodiment of the present invention.
5A to 5D show a method of manufacturing a window according to an embodiment of the present invention.
Hereinafter, the present invention will be described in detail with reference to the drawings.
1 is an exploded perspective view of a display device according to an embodiment of the present invention. 2A to 2C are combined perspective views of a display device according to an embodiment of the present invention. 2A to 2C show display devices in various states for easy explanation. Hereinafter, the display device will be described with reference to Figs. 1 to 2C.
The display device DS includes a bending
A predetermined bending axis BX may be defined in the bending
The bending
The bending
The bending
For example, the bending
At this time, the bent
The
The
The
The
The display device DS is folded or unfolded along a predetermined folding axis FX. The folding axis FX can be defined between the first and second receiving
The
The bending
As shown in Fig. 2A, the display device DS may have a shape bent at a predetermined angle along the folding axis FX. Alternatively, as shown in Fig. 2B, the display device DS can be completely folded about the folding axis FX. At this time, the bent
Alternatively, as shown in Fig. 2C, the display device DS can be fully opened around the folding axis FX. At this time, the bent
FIGS. 3A through 3C are cross-sectional views illustrating shapes of a bending transparent member according to an embodiment of the present invention. FIG. 3A to 3C are respectively shown to correspond to FIGS. 2A to 2C for easy explanation.
3A, when the display device DS is in the shape shown in Fig. 2A, the bending
As shown in Fig. 3B, when the display device DS is in the shape shown in Fig. 2B, the bending
Referring again to FIG. 3B, the bent
As shown in Fig. 3C, when the display device DS is in the shape shown in Fig. 2C, the bending
At this time, the bending
The bending
At this time, the second stress PS2 may be smaller than the first stress PS1. The magnitude of the first stress PS1 and the magnitude of the second stress PS2 are each dependent on the bending angle? B of the bending
1) according to an exemplary embodiment of the present invention includes the bending
The second stress PS2 has a smaller magnitude than the first stress PS1 so that the bending of the
4 is a cross-sectional view illustrating a bending transparent member according to an embodiment of the present invention. As shown in Fig. 4, the bending transparent member 100-1 may be a bent shape in a plurality of regions. A plurality of bending axes BX1, BX2, BX3 can be defined in the bending transparent member 100-1. The plurality of bending axes BX1, BX2, and BX3 can be defined in a portion where the bending transparent member 100-1 has the largest curvature in a predetermined bending region.
The bending transparent member 100-1 is bent at a first bending angle? Ba in a portion of the plurality of bending axes BX1, BX2, BX3 where the first bending axis BX1 is defined. The bending transparent member 100-1 is bent at a second bending angle? Bb at a portion where the second bending axis BX2 of the plurality of bending axes BX1, BX2 and BX3 is defined. The bending transparent member 100-1 is bent at a third bending angle? Bc in a portion of the plurality of bending axes BX1, BX2, BX3 where the third bending axis BX3 is defined.
The bending transparent member 100-1 is bent inward in each of the portions of the plurality of bending axes BX1, BX2 and BX3 where the first bending axis BX1 and the third bending axis BX3 are defined, And bends outward at a portion of the plurality of bending axes BX1, BX2, BX3 where the second bending axis BX2 is defined.
On the other hand, this is illustrated by way of example, and the bending transparent member 100-1 according to an embodiment of the present invention can be bent at various regions, and the degree of bending or bending direction for each region is different can do. The bending transparent member 100-1 according to an embodiment of the present invention includes a plurality of regions previously bended, thereby alleviating the folding stress caused by the folding of the collapsible display device.
5 is a perspective view showing an embodiment of a display device according to an embodiment of the present invention. 5, the protective member 200 (see FIG. 1) is omitted for easy explanation.
As shown in FIG. 5, the display device may further include a
At this time, the bent transparent member 100-1 may have a bending angle? B1 before being assembled, and the bending angle? B1 may be substantially larger than the bending angle? B shown in FIG. 1 .
On the other hand, this is an exemplary illustration, and the bending angle &thetas; B1 is determined by the flexibility of the
6A to 6D show a method of manufacturing a window according to an embodiment of the present invention. 6A to 6D, a method of forming a window will be described.
As shown in Fig. 6A, a flat transparent member 100-R is provided. The flat transparent member 100-R may be in the form of a plate parallel to a predetermined plane in the entire region.
At this time, the flat transparent member 100-R is heat-treated. The flat transparent member 100-R is exposed to heat (HT) at a temperature of about 600 degrees to about 800 degrees. Although not shown, the heat treatment (HT) can proceed in an electric furnace.
As shown in FIG. 6B, the heat-treated transparent member 100-H is subjected to a slow cooling process (CT). The slow cooling process (CT) can prevent deformation of the heat-treated transparent member 100-H in accordance with the residual stress. Although not shown, the slow cooling process (CT) can proceed in an electric furnace.
As shown in Fig. 6C, the annealed transparent member 100-C is bent. The annealed transparent member 100-C may be bent by a predetermined jig ZG. The jig (ZG) can have various structures.
For example, as shown in Fig. 6C, the jig ZG may be a plurality of robot arms coupled to each of the two stages of the slow cooling transparent member 100-C. The jig ZG moves the both ends of the slow-cooling transparent member 100-C so that the both ends of the slowly cooled transparent member 100-C are brought close to each other to bend the slowly cooled transparent member 100- do.
As the both ends of the transparent member 100-C annealed according to the jig ZG are closer to each other, the bending strength becomes larger. Further, the bending time increases as the slow cooling transparent member 100-C is maintained in the bending state. By controlling the bending strength and bending time,
Alternatively, although not shown, the jig ZG may be a structure extending along one direction and having a plurality of grooves parallel to each other. As the both ends of the annealed transparent member 100-C are respectively bonded to the grooves, the annealed transparent member 100-C can be folded.
At this time, the jig ZG may be a member having a fireproof property. For example, the jig ZG may be a refractory brick extending along one direction on one side and defining two grooves parallel to each other. The transparent member 100-C subjected to the slow cooling process can be bent by inserting both ends of the slowly cooled transparent member 100-C into the respective grooves. As the spaced distance of the grooves approaches, the curvature of the bending
The gradually cooled transparent member 100-C can be bent in various shapes according to the structure of the jig ZG. For example, as shown in Fig. 6C, the annealed transparent member 100-C may be bent with a predetermined curvature.
Alternatively, although not shown, the annealed transparent member 100-C may be bent in an irregular shape with various curvatures depending on the position. Alternatively, although not shown, the slow-cooling transparent member 100-C may be bent at only one portion and the remaining portion may not be bent. The annealed transparent member 100-C may be bent into various shapes and is not limited to any one embodiment.
As shown in FIG. 6D, the
The bending angle? B may be a factor indicating the extent to which the
The bending angle &thetas; B may vary depending on the bending strength or the bending time. The greater the bending strength, the longer the bending time, the greater the bending angle? B. As described above, the folding stress on the
On the other hand, the larger the bending angle? B , the greater the unfolding stress on the
While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that various modifications and changes may be made thereto without departing from the scope of the present invention.
Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.
DS: Display device 100: Bending transparent member
200: Protective member BX: Bending axis
FX: Folding axis 300: Display member
Claims (9)
Providing a transparent member that is bent along the bending axis extending in one direction; And
And bonding the bent transparent member to the protection member in a flat state.
Wherein the bent transparent member is made of glass.
Wherein the thickness of the bending transparent member is 100 占 퐉 or less.
Wherein providing the bended transparent member comprises:
Providing a flat transparent member;
Heat treating the flat transparent member; And
And bending the heat-treated flat transparent member so that the bent transparent member is formed.
Wherein the heat treatment is performed at a temperature of 600 DEG C or more and 800 DEG C or less.
Further comprising slow cooling the heat-treated flat transparent member,
Wherein the bendable transparent member is formed by bending the slowly cooled flat transparent member along the bending axis.
Wherein the heat-treated flat transparent member is bonded to the jig and bent.
Wherein the jig is robot arms coupled to both ends of the heat treated flat transparent member.
Wherein the jig is a refractory brick.
Priority Applications (1)
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KR1020150166712A KR20170061804A (en) | 2015-11-26 | 2015-11-26 | Method of manufacturing display device |
Applications Claiming Priority (1)
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KR1020150166712A KR20170061804A (en) | 2015-11-26 | 2015-11-26 | Method of manufacturing display device |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109523920A (en) * | 2018-08-07 | 2019-03-26 | *** | A kind of folding stand, display, keyboard and electric appliance |
WO2020119008A1 (en) * | 2018-12-13 | 2020-06-18 | 武汉华星光电半导体显示技术有限公司 | Foldable display apparatus |
US10698446B2 (en) | 2018-06-12 | 2020-06-30 | Samsung Display Co., Ltd. | Display apparatus |
CN111986567A (en) * | 2019-05-22 | 2020-11-24 | 三星显示有限公司 | Manufacturing method of display module |
US10908644B2 (en) | 2018-10-30 | 2021-02-02 | Samsung Display Co., Ltd. | Display device including a hinge and support portions having an increasing thickness |
CN112396959A (en) * | 2020-11-11 | 2021-02-23 | 武汉华星光电半导体显示技术有限公司 | Display device |
US11690275B2 (en) | 2020-04-13 | 2023-06-27 | Samsung Display Co., Ltd. | Method of fabricating display device |
-
2015
- 2015-11-26 KR KR1020150166712A patent/KR20170061804A/en unknown
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10698446B2 (en) | 2018-06-12 | 2020-06-30 | Samsung Display Co., Ltd. | Display apparatus |
US10969828B2 (en) | 2018-06-12 | 2021-04-06 | Samsung Display Co., Ltd. | Display apparatus |
CN109523920A (en) * | 2018-08-07 | 2019-03-26 | *** | A kind of folding stand, display, keyboard and electric appliance |
CN109523920B (en) * | 2018-08-07 | 2020-09-15 | *** | Folding leg, display, keyboard and electric appliance |
US10908644B2 (en) | 2018-10-30 | 2021-02-02 | Samsung Display Co., Ltd. | Display device including a hinge and support portions having an increasing thickness |
WO2020119008A1 (en) * | 2018-12-13 | 2020-06-18 | 武汉华星光电半导体显示技术有限公司 | Foldable display apparatus |
CN111986567A (en) * | 2019-05-22 | 2020-11-24 | 三星显示有限公司 | Manufacturing method of display module |
US11609604B2 (en) | 2019-05-22 | 2023-03-21 | Samsung Display Co., Ltd. | Method for manufacturing display module |
US11690275B2 (en) | 2020-04-13 | 2023-06-27 | Samsung Display Co., Ltd. | Method of fabricating display device |
CN112396959A (en) * | 2020-11-11 | 2021-02-23 | 武汉华星光电半导体显示技术有限公司 | Display device |
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