WO2022217456A1 - 显示面板的翻折方法、翻折装置 - Google Patents
显示面板的翻折方法、翻折装置 Download PDFInfo
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- WO2022217456A1 WO2022217456A1 PCT/CN2021/086954 CN2021086954W WO2022217456A1 WO 2022217456 A1 WO2022217456 A1 WO 2022217456A1 CN 2021086954 W CN2021086954 W CN 2021086954W WO 2022217456 A1 WO2022217456 A1 WO 2022217456A1
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims description 52
- 238000009434 installation Methods 0.000 claims description 29
- 239000000853 adhesive Substances 0.000 claims description 22
- 230000001070 adhesive effect Effects 0.000 claims description 22
- 238000004026 adhesive bonding Methods 0.000 claims description 12
- 230000007306 turnover Effects 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 description 21
- 238000010586 diagram Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 5
- 239000004642 Polyimide Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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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
Definitions
- the present disclosure relates to the manufacturing field of display devices, and in particular, to a folding method and a folding device of a display panel.
- a current large-sized display device is formed by splicing a plurality of relatively small-sized display panels.
- the display panel for splicing includes a main panel and a driving board located on both sides of the main panel. Before splicing, the driving board needs to be folded to the back of the main panel. After the folding is completed, the splicing of multiple main panels can be realized, and a large-sized display device can be formed.
- the purpose of the present disclosure is to provide a folding method and a folding device of a display panel.
- a method for folding a display panel wherein the display panel includes a main panel and at least one driving board connected to the main panel, and at least one driving board is disposed on the display panel.
- controlling the sub-carrying platform to turn relative to the main carrying platform, so as to fold the driving board to the side of the main panel facing away from the main carrying platform;
- the sum of the numbers of the first alignment marks and the second alignment marks is greater than 2; when the two driving boards in the display panel and the When the main panel is located on the same plane, the first alignment mark and the second alignment mark in the same group of alignment marks are located on the same straight line;
- the judging whether the first alignment mark and the second alignment mark in each group of alignment marks are located at the corresponding preset positions specifically includes:
- the acquiring the positions of the first alignment mark and the second alignment mark on the folded display panel specifically includes:
- the positions of the first alignment mark and the second alignment mark on the folded display panel are acquired.
- each of the driving boards is connected to the main panel through a flexible connector; the folding method further includes:
- the adhesive on the display panel is cured.
- An embodiment of the present disclosure provides a folding device for folding a display panel, wherein the display panel includes: a main panel and at least one driving board connected to the main panel, the display panel is provided with There are at least one group of alignment marks, and each group of alignment marks includes: a first alignment mark on the main panel and a second alignment mark on the drive board; the folding device includes:
- a main carrying platform configured to carry and fix the main panel
- a sub-carrying platform configured to carry and fix the driving board
- a driving mechanism configured to drive the sub-carrying platform to turn over relative to the main carrying platform, so as to fold the driving plate to the side of the main panel away from the main carrying platform;
- a position acquisition mechanism configured to acquire the positions of the first alignment mark and the second alignment mark on the folded display panel
- a control mechanism configured to judge whether the first alignment mark and the second alignment mark in each group of alignment marks are located at the corresponding preset positions, and the first alignment mark and the second alignment mark When there is one or more of the preset positions that are not in the corresponding preset position, a control signal is issued;
- the adjustment mechanism is configured to adjust the position of the sub-carrying platform according to the control signal until the first alignment mark and the second alignment mark in each group of alignment marks are located at corresponding preset positions.
- the display panel includes two of the driving boards, two The driving boards are respectively located on opposite sides of the main panel.
- the first alignment mark in the same group of alignment marks The mark and the second alignment mark are on the same line;
- the control mechanism is specifically configured to judge whether the first alignment mark and the second alignment mark in each group of alignment marks are located on the same straight line, and when the first alignment mark and the second alignment mark in any group of alignment marks are on the same straight line, When the alignment marks are located on the same straight line, it is determined that the first alignment mark and the second alignment mark in each group of alignment marks are located at corresponding preset positions; when the first alignment mark in at least one group of alignment marks When the mark and the second alignment mark are not on the same straight line, it is determined that there is one or more of the first alignment mark and the second alignment mark that are not in the corresponding preset positions.
- the location acquisition mechanism includes:
- a first image acquisition unit configured to acquire the position of the first alignment mark on the folded display panel by means of image acquisition
- the second image acquisition unit is configured to acquire the position of the second alignment mark on the folded display panel by means of image acquisition.
- the folding device further comprises:
- an installation frame comprising a first installation arm and a second installation arm arranged oppositely, and a connecting arm fixedly connected between the first installation arm and the second installation arm; the first installation arm and the second installation arm
- the two mounting arms are both rotatably connected with the side plate;
- the auxiliary platform is connected between the first installation arm and the second installation arm; the driving mechanism is specifically configured to drive the installation frame to rotate relative to the side plate to drive the The sub stage is turned over with respect to the main stage.
- the adjustment mechanism includes: a plurality of drivers, the drivers are provided on both the first mounting arm and the second mounting arm; the drivers are configured to drive all the drivers according to the control signal The end of the sub-carrying platform moves close to or away from the connecting arm.
- the driver comprises a piezoelectric ceramic driver.
- a side of the first mounting arm facing the second mounting arm and a side of the second mounting arm facing the first mounting arm are provided with mounting grooves;
- the folding device also includes:
- the bearing platform mounting pieces are arranged at both ends of the sub-bearing platform, and at least a part of the bearing platform mounting piece extends into the installation groove; The relative displacement of the mounting frame occurs;
- the support member disposed on the connecting arm, the support member includes a support end facing the sub-bearing platform;
- the support has an extended state and a retracted state, and the distance between the support end and the connecting arm when the support is in the extended state is greater than that when the support is in the retracted state The distance between the end and the connecting arm is greater than the length of the elastic telescopic element in a natural state.
- the sub-carrying table has a bearing surface for carrying the driving board, the sub-carrying table is provided with a vacuum adsorption hole, and one end of the vacuum adsorption hole is located on the bearing surface of the sub-carrying table face.
- each of the drive boards is connected to the main panel through a flexible connector, and the secondary platform is further configured to carry a portion of the flexible connector;
- the control mechanism is further configured to, before the drive mechanism drives the sub-carrying platform to turn over, to issue a gluing signal; and to determine the first alignment mark and the second pair of alignment marks in the groups of alignment marks After the bit marks are located at the corresponding preset positions, a curing signal is sent;
- the folding device also includes:
- a gluing mechanism configured to apply adhesive glue on the surface of the flexible connector facing away from the sub-bearing platform according to the gluing signal
- the curing mechanism is configured to cure the adhesive according to the curing signal.
- FIG. 1 is a schematic diagram of a display panel to be folded provided in some embodiments of the present disclosure.
- FIG. 2 is a partial cross-sectional view of the folded display panel.
- 3A to 3C are schematic diagrams of alignment marks on a display panel in different states provided in some embodiments of the present disclosure.
- FIG. 4 is a perspective view of a folding device provided in some embodiments of the present disclosure.
- FIG. 5 is another perspective view of the folding device provided in some embodiments of the present disclosure.
- FIG. 6 is still another perspective view of the folding device provided in some embodiments of the present disclosure.
- FIG. 7 is a schematic diagram of a sub-carrying platform provided on a mounting frame provided in some embodiments of the present disclosure.
- FIG. 8 is a cross-sectional view taken along line AA' in FIG. 7 .
- FIG. 9 is a schematic diagram of a folding method of a display panel provided in some embodiments of the present disclosure.
- FIG. 10 is a schematic diagram of a folding method of a display panel provided in other embodiments of the present disclosure.
- Embodiments of the present disclosure provide a folding device for folding a display panel.
- 1 is a schematic diagram of a display panel to be folded provided in some embodiments of the present disclosure.
- the display panel 2 includes a main panel 21 and at least one driving board 22 connected to the main panel 21 .
- the main panel 21 and the driving board 22 are connected by a flexible connecting member 23a.
- the main panel 21 includes a light-emitting device for display, such as a micro light-emitting diode (mini/micro LED);
- the driving board 22 includes a driving circuit 22a for driving the light-emitting device to emit light.
- the light-emitting device and the driving circuit 22a are both disposed on the flexible substrate 23, the flexible substrate 23 is a continuous film layer, and the material of the flexible substrate 23 may include polyimide (PI), and the light-emitting device and the driving circuit 22a can be connected through a signal line provided on the flexible substrate 23, so that the driving circuit 22a can provide the light emitting device with an electrical signal for display through the signal line.
- the main panel 21 may also include a relatively rigid support plate 21a, such as a glass plate.
- the carrier board 21a and the light emitting device are located on two opposite surfaces of the flexible substrate 23; the driving board 22 may also include a relatively rigid carrier board located on the surface of the flexible substrate 23 facing away from the driving circuit 22a.
- the light emitting device can also be arranged on the carrier board
- the driving circuit 22a can be arranged on the flexible substrate 23
- the flexible substrate 23 is connected to the edge of the carrier board on which the light emitting device is arranged to emit light.
- the device and the driving circuit 22a may be connected by signal lines provided on the flexible substrate 23 .
- the flexible substrate 23 is a continuous film layer as an example for description, wherein the part of the flexible substrate 23 between the main panel 21 and the driving board 22 is used as the flexible connecting member 23a.
- the display panel 2 may include one drive board 22; or, the display panel 2 includes two drive boards 22 located on both sides of the main panel 21; or, the display panel 2 includes three drive boards 22 located on three sides of the main panel 21; Alternatively, the display panel 2 includes four driving boards 22 located on four sides of the main panel 21 .
- the number of the driving boards 22 is two for description.
- the folding device folds the display panel, specifically, the driving board 22 is folded to the backlight side of the main panel 21, and the folded display panel is in a target shape.
- the "target shape” may be determined according to actual needs.
- the target shape is a rectangle.
- FIG. 2 is a partial cross-sectional view of the folded display panel.
- adhesive glue 3 is formed at least on the flexible connecting member 23a.
- the adhesive 3 is cured so that the driving board 22 is fixed on the main panel 21 by the cured adhesive 3.
- the folding process of the display panel needs to ensure that the display panel is folded. Then, the gap between the side surface of the carrier board 21a and the flexible substrate 23 is as small as possible.
- the carrier board 21a was formed by cutting in the early stage, due to the limitation of the process conditions, the carrier board 21a could not reach the target shape, which in turn led to the splicing of the folded display panels.
- the seam is smaller than the predetermined value.
- the splicing seam after splicing the display panels can be smaller than a predetermined value, but in fact, the two adjacent sides of the carrier board 21a are not perpendicular, which leads to folding The two sides of the rear display panel are not vertical.
- a group of alignment marks are formed on the display panel. position to ensure that the folded display panel reaches the target shape.
- 3A to 3C are schematic diagrams of alignment marks on a display panel in different states provided in some embodiments of the present disclosure.
- 3B shows the distribution of alignment marks when the folded display panel reaches the target shape;
- FIG. 3C shows the distribution of alignment marks when the folded display panel does not reach the target shape.
- each group of alignment marks on the display panel includes a first alignment mark A1 on the main panel 21 and a second alignment mark A2 on the driving board 22 .
- each first alignment mark A1 and each second alignment mark A2 have a preset position
- the preset position of each first alignment mark A1 (or second alignment mark A2) refers to the display panel
- the position of the first alignment mark A1 (or the second alignment mark A2 ) when the folding occurs and the folded display panel reaches the target shape.
- one or more of the first alignment mark A1 and the second alignment mark A2 are not in corresponding preset positions.
- the main panel 21 is connected with two driving boards 22 , and the two driving boards 22 are respectively located on both sides of the main panel 21 along the first direction.
- the sum of the numbers of the first alignment marks A1 and the second alignment marks A2 is greater than 2, for example, each group of alignment marks includes two first alignment marks A1 and two second alignment marks Mark A2, the two second alignment marks A2 are located on the two driving boards 22 respectively.
- the first alignment marks A1 when the display panel 2 is in a flat state (that is, the driving board 22 and the active board 21 are located on the same plane), the first alignment marks A1, The second alignment mark A2 is located on a straight line extending along the first direction (as shown in FIG.
- the set of alignment marks The first alignment mark A1 and the second alignment mark A2 in the alignment marks are not on a straight line extending along the first direction (as shown in FIG. 3C ); when the display panel 2 is folded, and the folded display
- the first alignment mark A1 and the second alignment mark A2 in the group of alignment marks are on a straight line along the first direction (as shown in FIG. 3B ).
- the present disclosure does not specifically limit the shapes of the first alignment mark A1 and the second alignment mark A2.
- the first alignment mark and the second alignment mark A2 may be circular, rectangular or cross-shaped.
- the first alignment mark A1 and the second alignment mark A2 in a certain group of alignment marks are on a straight line extending along the first direction, which may be specifically: the first alignment mark A1 and the second alignment mark in the group of alignment marks
- the center line of the alignment mark A2 is on a straight line extending along the first direction.
- the preset positions of the first alignment mark A1 and the second alignment mark A2 may also be other positions.
- the first alignment mark A1 and the second alignment mark A2 are on a straight line extending in the second direction.
- the second direction intersects the first direction described above (eg, the second direction is perpendicular to the first direction).
- the first alignment mark A1 and the second alignment mark A2 can be connected to form a preset graphic (for example, a rectangle).
- the first alignment mark A1 , the light emitting device, the second alignment mark A2 , and the driving circuit 22 a are located on the same plane of the flexible substrate 23 .
- the carrier board 21a and the light emitting device are disposed on opposite sides.
- the first alignment mark A1 and the second alignment mark A2 can be produced simultaneously with some signal lines or devices in the driving circuit, thereby simplifying the production process.
- FIG. 4 is a perspective view of the folding device provided in some embodiments of the present disclosure
- FIG. 5 is another perspective view of the folding device provided in some embodiments of the present disclosure
- FIG. 6 is provided in some embodiments of the present disclosure.
- Still another perspective view of the folding device wherein, Figures 4 and 5 respectively show perspective views of the folding device from two angles before the sub-carrying platform is turned over, and Figure 6 shows that after the sub-carrying platform is turned over, the folding A perspective view of the device.
- the folding device includes: a main stage 100 , a sub stage 200 , a drive mechanism (not shown), a position acquisition mechanism, a control mechanism (not shown) and an adjustment mechanism 400 .
- the main carrying platform 100 is configured to carry the main panel 21 .
- the main carrying platform 100 is provided with adsorption holes, and the main panel 21 is fixed on the carrying surface of the main carrying platform 100 by means of vacuum adsorption;
- the main panel 21 is fixed on the bearing surface of the main platform 100 .
- the main panel 21 can also be fixed on the main platform 100 in other ways, so as to prevent the main panel 21 from being displaced during the folding process of the display panel.
- the supporting plate 21 a is located on the side of the flexible substrate 23 away from the main supporting platform 100 .
- the sub-carrying platform 200 is configured to carry and fix the driving board 22; in addition, the sub-carrying platform 200 can also fix a part of the flexible connecting member 23a.
- the sub-carrying platform 200 is provided with suction holes, and the drive plate 22 is fixed on the bearing surface of the sub-carrying platform 200 by vacuum adsorption;
- the driving board 22 is fixed on the bearing surface of the sub-platform 200 .
- the driving board 22 can also be fixed on the sub-platform 200 in other ways.
- the driving mechanism is configured to drive the sub stage 200 to turn over relative to the main stage 100 , so as to fold the driving plate 22 to the side of the main panel 21 away from the main stage 100 .
- the position acquisition mechanism is configured to acquire the positions of the first alignment mark A1 and the second alignment mark A2 on the folded display panel.
- the manner in which the position acquiring mechanism acquires the positions of the first alignment mark A1 and the second alignment mark A2 is not specifically limited.
- the positions of the first alignment mark A1 and the second alignment mark A2 may be acquired by means of image acquisition.
- the control mechanism is configured to determine whether the first alignment mark A1 and the second alignment mark A2 in each group of alignment marks are located at corresponding preset positions. When one or more of the first alignment mark A1 and the second alignment mark A2 are not in the corresponding preset positions, the control mechanism sends a control signal.
- the display panel includes two driving boards 22. When the driving board 22 and the main panel 21 of the display panel are located on the same plane, the first alignment mark A1 and the second alignment mark in the same group of alignment marks A2 is on the same straight line.
- control mechanism is specifically configured to determine whether the first alignment mark A1 and the second alignment mark A2 in each group of alignment marks are located on the same straight line, and when the first pair of alignment marks in any group of alignment marks When the alignment mark A1 and the second alignment mark A2 are both located on the same straight line, it is determined that the first alignment mark A1 and the second alignment mark A2 in each group of alignment marks are located at the corresponding preset positions; When the first alignment mark A1 and the second alignment mark A2 in the group alignment marks are not on the same straight line, it is determined that the first alignment mark A1 and the second alignment mark A2 are not in the corresponding preset. Set one or more of the positions to send out control signals.
- the adjustment mechanism is configured to adjust the position of the sub-carrying platform 200 according to the control signal until the first alignment mark A1 and the second alignment mark A2 in each group of alignment marks are located at corresponding preset positions.
- the position acquisition mechanism can acquire the first pair of The position of the alignment mark A1 and the second alignment mark A2, if the at least one first alignment mark A1 or the at least one second alignment mark A2 is not in the corresponding preset position, the adjustment mechanism will adjust the position of the sub-carrying platform 200 , so as to adjust the position of the drive board 22 until each first alignment mark A1 and each second alignment mark A2 are in their respective preset positions, and at this time, the shape of the folded display panel is the target shape .
- the folding device may further include a gluing mechanism and a curing mechanism.
- the control mechanism is further configured to send a gluing signal before the driving mechanism drives the sub-carrying platform 200 to turn over; and after it is determined that the first alignment mark A1 and the second alignment mark A2 in each group of alignment marks are both After being in the corresponding preset position, a curing signal is issued.
- the gluing mechanism is configured to apply adhesive glue on the surface of the flexible connector 23a facing away from the sub-carrying platform 200 according to the gluing signal; Some areas are coated with adhesive.
- the curing mechanism is configured to cure the adhesive according to the curing signal.
- the driving board 22 Before the adhesive glue is cured, the driving board 22 is bent to the side of the main panel 21 away from the main platform 100 , and is preliminarily bonded with the main panel 21 .
- the viscosity of the adhesive before curing is very small, and at this time, the shape of the folded display panel can still be adjusted. After the adjustment is completed, the adhesive is cured to shape the display panel.
- the gluing mechanism may include a container disposed above the sub-support platform 200, and the container is used for accommodating and outputting the adhesive.
- the curing mechanism may include a curing lamp, eg, a UV lamp.
- the number of the sub-carrying platforms 200 is two, and the two sub-carrying platforms 200 are respectively disposed on both sides of the main carrying platform 100 along the first direction, and each sub-carrying platform 200 is used to carry and A driver board 22 is fixed.
- the number of the sub-stages 200 can also be other numbers, for example, three or four.
- the bearing surface of the sub-platform 200 and the bearing surface of the main platform 100 are on the same horizontal plane, so that the display panel can be placed horizontally before being folded.
- the bearing surface of the sub-platform 200 is disposed opposite to the bearing surface of the main platform 100 .
- Side plates 500 are provided on opposite sides of the main supporting platform 100 along the second direction, and the side plates 500 and the main supporting platform 100 are kept relatively fixed.
- both the side plate 500 and the main stage 100 are provided on the base.
- the side plate 500 is fixed on the main platform 100 .
- the sub-carrying platform 200 is arranged on the mounting frame 600 .
- the driving mechanism drives the sub-carrying platform 200 to rotate, specifically by driving the mounting frame 600 to rotate relative to the side plate 500 , the sub-carrying platform 200 is turned over relative to the main carrying platform 100 .
- the drive mechanism includes a drive motor, and when the folding device includes two sub-carrying platforms 200, the mounting frame 600 where the two sub-carrying platforms 200 are located can be driven by the same drive motor, or by two drive motors respectively. Control is not limited here.
- the driving motor can simultaneously control the two mounting brackets 600 to rotate relative to the side plate 500 through a transmission mechanism.
- Other structures well known to those skilled in the art are adopted, which are not limited here.
- FIG. 7 is a schematic diagram of a sub-carrying platform provided on an installation frame provided in some embodiments of the present disclosure.
- the installation frame 600 includes a first installation arm 601 and a second installation arm 602 arranged opposite to each other, and a fixed
- the connecting arm 603 is connected between the first mounting arm 601 and the second mounting arm 602 ; the first mounting arm 601 and the second mounting arm 602 are both rotatably connected with the side plate 500 .
- both the first mounting arm 601 and the second mounting arm 602 are rotatably connected to the side plate 500 through the first rotating shaft 604 .
- the sub stage 200 is connected between the first mounting arm 601 and the second mounting arm 602 .
- FIG. 8 is a cross-sectional view along the line AA' in FIG. 7 , as shown in FIGS. 7 and 8 , the first mounting arm 601 faces the side of the second mounting arm 602 and the second mounting arm 602 faces the first mounting arm 601
- the sides may be provided with mounting grooves V.
- Both ends of the sub-carrying platform 200 are provided with bearing platform mounting members 605, and at least a part of the bearing platform mounting member 605 extends into the installation groove V; Relative displacement. It should be noted that the two ends of the sub-mount 200 refer to the end of the sub-mount 200 that is close to the first mounting arm 601 and the end that is close to the second mounting arm 602 .
- At least one elastic telescopic member 606 is disposed between the sub-carrying platform 200 and the connecting wall 603, and two ends of the elastic retractable member 606 are respectively connected to the sub-carrying platform 200 and the connecting arm 603.
- the number of elastic elastic members 606 is two, and the elastic elastic members 606 are springs.
- At least one support member 607 is disposed on the connecting wall 603 , and the support member 607 includes a support end facing the sub-support platform 200 .
- the number of the support members 607 is two, and the support members 607 are jack wires.
- the support 607 has an extended state and a retracted state. When the support 607 is in the extended state, the distance between the support end and the connecting arm 603 is greater than the distance between the support end and the connecting arm 603 when the support 607 is in the retracted state. and is greater than the length of the elastic elastic member 606 in the natural state.
- the fact that the elastically stretchable member 606 is in a natural state refers to a state when the elastically stretchable member 606 is not subjected to tension and pressure.
- the connecting arm 603 is provided with a mounting hole along the side, a part of the support member 607 is disposed in the mounting hole, and the support member 607 can be extended and retracted along the axial direction of the mounting hole, wherein the axial direction of the mounting hole is the same as that of the first mounting hole.
- the extending directions of the arms 601 are the same.
- the support member 607 before driving the mounting frame 600 to rotate relative to the main platform 100, the support member 607 can be brought into an extended state, so that the elastic retractable member 606 can be in a stretched state, so as to exert a pulling force on the secondary platform 200;
- the support member 607 is switched to the retracted state.
- the elastic retractable member 606 will continue to exert a pulling force on the sub-bearing platform 200 during the folding process of the display panel.
- the direction of the pulling force is directed from the sub-carrying platform 200 to the connecting arm 603.
- the elastic The pulling force exerted by the telescopic element 606 on the sub-support table 200 prevents an excessive gap between the flexible substrate 23 and the side surface of the support board 21a.
- the upper surface and/or the lower surface of the platform mounting member 605 is provided with rolling elements 608, so as to minimize the frictional force between the bearing platform mounting member 605 and the inner wall of the mounting groove V.
- the rolling element 608 may be a spherical plunger.
- the position acquisition mechanism includes: a first image acquisition unit 301 and a second image acquisition unit 302.
- the first image acquisition unit 301 is configured to acquire the first alignment of the folded display panel by means of image acquisition.
- the position of the mark; the second image acquisition unit 302 is configured to acquire the position of the second alignment mark of the folded display panel by means of image acquisition.
- the number of the first image capturing units 301 is multiple, the first image capturing units 301 are in one-to-one correspondence with the first alignment marks on the display panel, and the positions of the first image capturing units 301 may be based on the first pair of alignment marks.
- the preset position of the bit mark is determined.
- the first image capturing unit 301 is a camera, and the position of each first image capturing unit 301 satisfies: when the folded display panel is in the target shape, the middle of the lens of the first image capturing unit 301 is in line with the corresponding first image capturing unit 301.
- the registration mark is right.
- the number of the second image capturing units 302 is multiple, and the second image capturing units 302 are in one-to-one correspondence with the second alignment marks on the display panel.
- the second image capturing unit 302 is a camera, and the position of each second image capturing unit 302 satisfies: when the folded display panel is in the target shape, the middle of the lens of the second image capturing unit 302 is in line with the corresponding second image capturing unit 302. The registration mark is right.
- the first alignment mark, the light-emitting device, the second alignment mark, and the driving circuit are located on the same side of the flexible substrate 23, and the carrier board 21a and the light-emitting device are disposed on the flexible substrate 23 , and when the main panel 21 is placed on the main stage 100 , the carrying plate 21 a is located on the side of the flexible substrate 23 away from the main stage 100 . That is to say, the first alignment mark is located on the side of the flexible substrate 23 facing the main stage 100 , and when the driving board 22 is folded to a position opposite to the main panel 21 , the second alignment mark is located on the flexible substrate 23 above.
- an accommodating hole may be provided on the main stage 100, and the first image capturing unit 301 may be provided in the accommodating hole.
- the secondary stage 200 is set to be transparent, and the second image capturing unit 302 is set above the main stage 100 , for example, on a bracket above the main stage 100 .
- the position of the second image capturing unit 302 can be fixed, or the bracket can be set as a movable bracket, so that the position of the second image capturing unit 302 can be adjusted.
- the so-called "transparent" in the present disclosure refers to a light transmittance of 80% or more.
- the adjustment mechanism includes a plurality of drivers 400 , wherein the first mounting arm 601 and the second mounting arm 602 are both provided with the drivers 400 .
- the sub-carrying platform 200 has a first end close to the first mounting arm 601 and a second end close to the second mounting arm 602.
- the driver 400 on the first mounting arm 601 is configured to drive the sub-carrying platform 200 according to the control signal
- the first end of the second mounting arm 602 is configured to move close to or away from the connecting arm 603 ;
- the sub-platform 200 has a back surface opposite to its supporting surface, and the platform mounting member 605 includes a supporting portion, and the supporting portion is located on the back of the sub-platform 200 .
- a convex portion 609 is provided on the supporting portion, and the convex portion 609 extends to the position of the driver 400, so that the driver 400 can drive the convex portion 609 to move closer to or away from the connecting arm 603, thereby driving the end of the sub-carrying platform 200 to move closer to or away from the connecting arm 603.
- the connecting arm 603 moves.
- the driver 400 may use a piezoelectric ceramic driver, so as to drive the sub-carrying stage 200 to perform displacement in the micrometer level, thereby improving the driving precision.
- FIG. 9 is a schematic diagram of a folding method of a display panel provided in some embodiments of the present disclosure, and the folding method is used in the above-mentioned folding device. As shown in Figure 9, the folding method includes:
- FIG. 10 is a schematic diagram of a method for folding a display panel provided in other embodiments of the present disclosure. As shown in FIG. 10 , the method includes the following steps S1 to S6:
- Step S1 the main panel of the display panel is fixed on the main bearing platform, and the driving board is fixed on the sub bearing platform. At the same time, a part of the flexible connector is fixed on the sub-carrying platform.
- Step S2 controlling the sub-carrying platform to turn over relative to the main carrying platform, so as to fold the driving board to the side of the main panel facing away from the main carrying platform.
- Step S21 forming adhesive glue on at least the surface of the flexible connector facing away from the sub-supporting platform.
- the viscosity of the adhesive before curing is smaller than the viscosity of the adhesive after curing.
- Step S3 Obtain the positions of the first alignment mark and the second alignment mark on the folded display panel.
- step S3 specifically includes: acquiring the positions of the first alignment mark and the second alignment mark by means of image acquisition.
- Step S4 judging whether the first alignment mark and the second alignment mark in each group of alignment marks are located at corresponding preset positions.
- this step S4 specifically includes: judging each group of alignment marks. Whether the first alignment mark and the second alignment mark in the alignment marks are located on the same straight line, when the first alignment mark and the second alignment mark in any group of alignment marks are on the same straight line, it is determined that The first alignment mark and the second alignment mark in each group of alignment marks are located at the corresponding preset positions; when the first alignment mark and the second alignment mark in at least one group of alignment marks are not on the same straight line When , it is determined that there is one or more of the first alignment mark and the second alignment mark that are not in the corresponding preset positions.
- Step S5 when there is one or more of the first alignment marks and the second alignment marks that are not in the corresponding preset positions, adjust the position of the sub-bearing platform until each group of alignment marks The first alignment mark and the second alignment mark are located at the corresponding preset positions.
- Step S6 curing the adhesive.
- curing is carried out by means of ultraviolet light.
- the positions of the first alignment mark and the second alignment mark are obtained, and when at least one first alignment mark Or when at least one second alignment mark A2 is not in the corresponding preset position, adjust the position of the sub-carrying platform, thereby adjusting the position of the driving board, until each first alignment mark and each second alignment mark are At their respective preset positions, at this time, the shape of the folded display panel is the target shape, so that when multiple folded display panels are spliced into a large-sized display screen, the splicing seam of the display panel meets the requirements.
Abstract
一种显示面板的翻折方法、翻折装置，显示面板（2）包括主面板（21）、以及与主面板（21）连接的至少一个驱动板（22），显示面板（2）上设置有至少一组对位标记，每组对位标记包括：位于主面板（21）上的第一对位标记（A1）和位于驱动板（22）上的第二对位标记（A2）；翻折方法包括：将显示面板（2）的主面板（21）固定在主承载台（100）上，将驱动板（22）固定在副承载台（200）上（S1）；控制副承载台（200）相对于主承载台（100）翻转（S3）；获取翻折后的显示面板（2）上第一对位标记（A1）和第二对位标记（A2）的位置（S3），判断各组对位标记中的第一对位标记（A1）和第二对位标记（A2）是否均位于相应的预设位置（S4）；当第一对位标记（A1）、第二对位标记（A2）中存在未处于相应的预设位置的一者或几者时，调整副承载台（200）的位置，直至各组对位标记中的第一对位标记（A1）、第二对位标记（A2）均位于相应的预设位置为止（S5）。
Description
本公开涉及显示设备的制造领域，具体地，涉及一种显示面板的翻折方法、翻折装置。
随着显示技术的发展，目前已经产生了对比度相对较高的大尺寸显示装置。目前的一种大尺寸显示装置是由多个尺寸相对较小的显示面板拼接而成。
在一些示例中，用于拼接的显示面板包括主面板和位于主面板两侧的驱动板，在拼接之前，需要将驱动板翻折至主面板的背面。完成翻折后，可以实现多个主面板的拼接，并形成大尺寸显示装置。
发明内容
本公开的目的在于提供一种显示面板的翻折方法、翻折装置。
作为本公开的第一方面，提供一种显示面板的翻折方法，其中，所述显示面板包括主面板、以及与所述主面板连接的至少一个驱动板，所述显示面板上设置有至少一组对位标记，每组对位标记包括：位于所述主面板上的第一对位标记和位于所述驱动板上的第二对位标记；所述翻折方法包括：
将所述显示面板的主面板固定在主承载台上，并将所述驱动板固定在副承载台上；
控制所述副承载台相对于所述主承载台翻转，以将所述驱动板翻折至所述主面板背离所述主承载台的一侧；
获取翻折后的显示面板上第一对位标记和第二对位标记的位置，并判断各组对位标记中的第一对位标记和第二对位标记是否均位于相 应的预设位置；
当所述第一对位标记、所述第二对位标记中存在未处于相应的预设位置的一者或几者时，调整所述副承载台的位置，直至各组对位标记中的第一对位标记、第二对位标记均位于相应的预设位置为止。
在一些实施例中，在每组对位标记中，所述第一对位标记和所述第二对位标记的数量之和大于2；当所述显示面板中的两个所述驱动板和所述主面板位于同一平面上时，同一组对位标记中的第一对位标记和第二对位标记位于同一直线上；
所述判断各组对位标记中的第一对位标记和第二对位标记是否均位于相应的预设位置，具体包括：
判断同一组对位标记中的第一对位标记和第二对位标记是否位于同一直线上，当任意一组对位标记中的第一对位标记和第二对位标记位于同一直线上时，则确定各组对位标记中的第一对位标记和第二对位标记均位于相应的预设位置；当至少一组对位标记中的第一对位标记和第二对位标记不在同一直线上时，判定所述第一对位标记、所述第二对位标记中存在未处于相应的预设位置的一者或几者。
在一些实施例中，所述获取翻折后的显示面板上第一对位标记和第二对位标记的位置，具体包括：
通过图像采集的方式，获取翻折后的显示面板上的所述第一对位标记和所述第二对位标记的位置。
在一些实施例中，每个所述驱动板通过柔性连接件与所述主面板连接；所述翻折方法还包括：
将所述驱动板固定在副承载台上的同时，还将所述柔性连接件的一部分固定在所述副承载台上；
在控制所述副承载台相对于所述主承载台翻转之前，至少在所述柔性连接件背离所述副承载台的表面上形成粘结胶；
在各组对位标记中的第一对位标记、第二对位标记均位于相应的预设位置之后，对所述显示面板上的粘结胶进行固化。
本公开实施例提供一种翻折装置，用于对显示面板进行翻折，其中，所述显示面板包括：主面板、以及与所述主面板连接的至少一个驱动板，所述显示面板上设置有至少一组对位标记，每组对位标记均包括：位于所述主面板上的第一对位标记和位于所述驱动板上的第二对位标记；所述翻折装置包括：
主承载台，配置为承载并固定所述主面板；
副承载台，配置为承载并固定所述驱动板；
驱动机构，配置为驱动所述副承载台相对于所述主承载台进行翻转，以将所述驱动板翻折至所述主面板背离所述主承载台的一侧；
位置获取机构，配置为获取翻折后的显示面板上第一对位标记和第二对位标记的位置；
控制机构，配置为判断各组对位标记中的第一对位标记和第二对位标记是否均位于相应的预设位置，并在所述第一对位标记、所述第二对位标记中存在未处于相应的预设位置的一者或几者时，发出控制信号；
调整机构，配置为根据所述控制信号调整所述副承载台的位置，直至各组对位标记中的第一对位标记、第二对位标记均位于相应的预设位置为止。
在一些实施例中，在每组对位标记中，所述第一对位标记和所述第二对位标记的数量之和大于2；所述显示面板包括两个所述驱动板，两个所述驱动板分别位于所述主面板的相对两侧，当所述显示面板中的两个所述驱动板和所述主面板位于同一平面上时，同一组对位标记中的第一对位标记和第二对位标记位于同一直线上；
所述控制机构具体配置为，判断每组对位标记中的第一对位标记 和第二对位标记是否位于同一直线上，当任意一组对位标记中的第一对位标记和第二对位标记位于同一直线上时，则确定各组对位标记中的第一对位标记和第二对位标记均位于相应的预设位置；当至少一组对位标记中的第一对位标记和第二对位标记不在同一直线上时，判定所述第一对位标记、所述第二对位标记中存在未处于相应的预设位置的一者或几者。
在一些实施例中，所述位置获取机构包括：
第一图像采集单元，配置为通过图像采集的方式，获取翻折后的显示面板上的所述第一对位标记的位置；
第二图像采集单元，配置为通过图像采集的方式，获取翻折后的显示面板上的所述第二对位标记的位置。
在一些实施例中，所述翻折装置还包括：
侧板，设置在所述主承载台的相对两侧；
安装架，包括相对设置的第一安装臂和第二安装臂、以及固定连接在所述第一安装臂与所述第二安装臂之间的连接臂；所述第一安装臂和所述第二安装臂均与所述侧板转动连接；
其中，所述副承载台连接在所述第一安装臂和所述第二安装臂之间；所述驱动机构具体配置为驱动所述安装架相对于所述侧板进行转动，以带动所述副承载台相对于所述主承载台翻转。
在一些实施例中，所述调整机构包括：多个驱动器，所述第一安装臂和所述第二安装臂上均设置有所述驱动器；所述驱动器配置为，根据所述控制信号驱动所述副承载台的端部靠近或远离所述连接臂移动。
在一些实施例中，所述驱动器包括压电陶瓷驱动器。
在一些实施例中，所述第一安装臂朝向所述第二安装臂的一侧以及所述第二安装臂朝向所述第一安装臂的一侧均设置有安装槽；
所述翻折装置还包括：
设置在所述副承载台两端的承载台安装件，所述承载台安装件的至少一部分伸入所述安装槽内；所述承载台安装件能够沿所述第一安装臂的延伸方向与所述安装架发生相对位移；
弹性伸缩件，其两端分别与所述副承载台、所述连接臂连接；
支撑件，设置在所述连接臂上，所述支撑件包括朝向所述副承载台的支撑端；
其中，所述支撑件具有伸出状态和缩回状态，所述支撑件处于伸出状态时所述支撑端与所述连接臂之间的距离大于所述支撑件处于缩回状态时所述支撑端与所述连接臂之间的距离，并大于所述弹性伸缩件处于自然状态时的长度。
在一些实施例中，所述副承载台具有用于承载所述驱动板的承载面，所述副承载台上设置有真空吸附孔，所述真空吸附孔的一端位于所述副承载台的承载面上。
在一些实施例中，每个所述驱动板通过柔性连接件与所述主面板连接，所述副承载台还配置为承载所述柔性连接件的一部分；
所述控制机构还配置为，在所述驱动机构驱动所述副承载台进行翻转之前，发出涂胶信号；以及在判断出所述各组对位标记中的第一对位标记和第二对位标记均位于相应的预设位置之后，发出固化信号；
所述翻折装置还包括：
涂胶机构，配置为根据所述涂胶信号在所述柔性连接件背离所述副承载台的表面上涂覆粘结胶；
固化机构，配置为根据所述固化信号对所述粘结胶进行固化。
附图是用来提供对本发明的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本发明，但并不构成对本发 明的限制。在附图中：
图1为本公开的一些实施例中提供的待翻折的显示面板的示意图。
图2为翻折后的显示面板的局部剖视图。
图3A至图3C为本公开的一些实施例中提供的处于不同状态下的显示面板上的对位标记的示意图。
图4为本公开的一些实施例中提供的翻折装置的立体图。
图5为本公开的一些实施例中提供的翻折装置的另一立体图。
图6为本公开的一些实施例中提供的翻折装置的再一立体图。
图7为本公开的一些实施例中提供的副承载台设置在安装架上的示意图。
图8为沿图7中AA'线的剖视图。
图9为本公开的一些实施例中提供的显示面板的翻折方法的示意图。
图10为本公开的另一些实施例中提供的显示面板的翻折方法的示意图。
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明，并不用于限制本发明。
本公开实施例提供一种翻折装置，用于对显示面板进行翻折。图1为本公开的一些实施例中提供的待翻折的显示面板的示意图，如图1所示，显示面板2包括：主面板21、以及与主面板21连接的至少一个驱动板22。其中，主面板21与驱动板22通过柔性连接件23a连接。主面板21包括用于显示的发光器件，例如微发光二极管(mini/micro LED)；驱动板22包括用于驱动发光器件发光的驱动电路22a。
在一个示例中，发光器件和驱动电路22a均设置在柔性衬底23上， 柔性衬底23为连续的膜层，柔性衬底23的材料可以包括聚酰亚胺(Polyimide，PI)，发光器件和驱动电路22a可以通过设置在柔性衬底23上的信号线连接，从而使驱动电路22a可以通过信号线向发光器件提供用于显示的电信号。主面板21还可以包括一刚度较大的承载板21a，例如玻璃板。承载板21a与发光器件位于柔性衬底23的相对两个表面；驱动板22也可以包括一刚度较大的承载板，该承载板位于柔性衬底23背离驱动电路22a的表面上。当然，在另一个示例中，还可以将发光器件设置在承载板上，将驱动电路22a设置在柔性衬底23上，并且，柔性衬底23与设置有发光器件的承载板的边缘连接，发光器件和驱动电路22a可以通过设置在柔性衬底23上的信号线连接。本公开实施例中以柔性衬底23为连续的膜层为例进行说明，其中，柔性衬底23位于主面板21与驱动板22之间的部分作为柔性连接件23a。
其中，显示面板2可以包括一个驱动板22；或者，显示面板2包括位于主面板21两侧的两个驱动板22；或者，显示面板2包括位于主面板21三侧的三个驱动板22；或者，显示面板2包括位于主面板21四侧的四个驱动板22。本公开实施例中以驱动板22的数量为两个进行说明。
在本公开实施例中，翻折装置对显示面板进行翻折，具体是将驱动板22翻折至主面板21的背光侧，并使翻折后的显示面板呈目标形状。在本公开中，“目标形状”可以根据实际需求确定。例如，目标形状为矩形。
图2为翻折后的显示面板的局部剖视图，如图2所示，通常，在显示面板的翻折工艺中，显示面板在翻折前，至少在柔性连接件23a上形成粘结胶3。在显示面板翻折之后，通过对粘结胶3进行固化，使得驱动板22通过固化后的粘结胶3固定在主面板21上，另外，显示面板的翻折工艺需要保证显示面板在翻折后，承载板21a的侧面与 柔性衬底23之间的间隙尽量小。但是，前期在切割形成承载板21a时，由于工艺条件的限制，会导致承载板21a并不能达到目标形状，进而导致翻折后的显示面板在进行拼接时，相邻两个显示面板之间的拼接缝小于预定值。例如，翻折后的显示面板的形状为矩形时，能够使显示面板拼接后的拼接缝小于预定值，而实际上，承载板21a的相邻两条侧边并不垂直，从而导致翻折后的显示面板的两条侧边并不垂直。
为了保证翻折后的显示面板能够呈目标形状，本公开实施例中，在显示面板上形成一组对位标记，在翻折装置对显示面板进行翻折的过程中，通过检测对位标记的位置，来保证翻折后的显示面板达到目标形状。
图3A至图3C为本公开的一些实施例中提供的处于不同状态下的显示面板上的对位标记的示意图，图3A示意出平整状态下的显示面板上的对位标记的分布图，图3B示意出翻折后的显示面板达到目标形状的情况下，对位标记的分布图；图3C示意出翻折后的显示面板的未达到目标形状的情况下，对位标记的分布图。如图3A至图3C所示，显示面板上的每组对位标记均包括位于主面板21上的第一对位标记A1、位于驱动板22上的第二对位标记A2。其中，每个第一对位标记A1、每个第二对位标记A2具有预设位置，每个第一对位标记A1(或第二对位标记A2)的预设位置是指，显示面板发生翻折后、且翻折后的显示面板达到目标形状的情况下，第一对位标记A1(或第二对位标记A2)的所在位置。而当显示面板发生翻折、且翻折后的显示面板未达到目标形状时，第一对位标记A1和第二对位标记A2中一者或几者未处于相应的预设位置。
在本公开的一个示例中，主面板21与两个驱动板22连接，两个驱动板22分别位于主面板21沿第一方向的两侧。在每组对位标记中，第一对位标记A1和第二对比标记A2的数量之和大于2，例如，每组 对位标记包括两个第一对位标记A1和两个第二对位标记A2，该两个第二对位标记A2分别位于两个驱动板22上。另外，对于任意一组对位标记而言，当显示面板2处于平整状态(即，驱动板22和主动板21位于同一平面上)时，该组对位标记中的第一对位标记A1、第二对位标记A2位于沿第一方向延伸的直线上(如图3A所示)；当显示面板2发生翻折、且翻折后的显示面板2的形状与目标形状不同时，该组对位标记中的第一对位标记A1、第二对位标记A2并不处于沿第一方向延伸的直线上(如图3C所示)；当显示面板2发生翻折、且翻折后的显示面板2的形状为目标形状时，该组对位标记中的第一对位标记A1、第二对位标记A2处于沿第一方向的直线上(如图3B所示)。其中，本公开对第一对位标记A1、第二对位标记A2的形状不做具体限定，例如，第一对位标记、第二对位标记A2可以为圆形、矩形或十字形。某组对位标记中的第一对位标记A1、第二对位标记A2处于沿第一方向延伸的直线上，具体可以为：该组对位标记中的第一对位标记A1、第二对位标记A2的中心连线处于沿第一方向延伸的直线上。
当然，在其他示例中，显示面板2在翻折后，第一对位标记A1和第二对位标记A2的预设位置还可以为其他位置，例如，当显示面板2发生翻折、且翻折后的显示面板2达到目标形状的情况下，任意一组中，第一对位标记A1和第二对位标记A2处于沿第二方向延伸的直线上。第二方向与上述第一方向交叉(例如，第二方向与第一方向垂直)。又例如，当显示面板2发生翻折、且翻折后的显示面板2达到目标形状的情况下，任意一组中，第一对位标记A1和第二对位标记A2可以连接形成预设图形(例如，矩形)。
在一些示例中，当显示面板2的驱动板22和主动板21位于同一平面上时，第一对位标记A1、发光器件、第二对位标记A2、驱动电路22a位于柔性衬底23的同一侧，承载板21a与发光器件设置在柔性 衬底23的相对两侧。这种情况下，第一对位标记A1、第二对位标记A2可以与驱动电路中的某些信号线或器件同步制作，从而简化制作工艺。
图4为本公开的一些实施例中提供的翻折装置的立体图，图5为本公开的一些实施例中提供的翻折装置的另一立体图，图6为本公开的一些实施例中提供的翻折装置的再一立体图，其中，图4和图5分别示出了副承载台未翻转之前，翻折装置的两个角度的立体图，图6示出了副承载台翻折之后，翻折装置的立体图。结合图1至图6所示，翻折装置包括：主承载台100、副承载台200、驱动机构(未示出)、位置获取机构、控制机构(未示出)和调整机构400。
其中，主承载台100配置为承载主面板21。可选地，主承载台100上设置有吸附孔，通过真空吸附的方式将主面板21固定在主承载台100的承载面上；或者，主承载台100上设置有固定件，该固定件将主面板21固定在主承载台100的承载面上。当然，也可以通过其他方式将主面板21固定在主承载台100上，从而防止主面板21在显示面板的翻折过程中发生位移。其中，主面板21位于主承载台100上时，承载板21a位于柔性衬底23背离主承载台100的一侧。
副承载台200配置为，承载并固定驱动板22；另外，副承载台200还可以对柔性连接件23a的一部分进行固定。可选地，副承载台200上设置有吸附孔，通过真空吸附的方式将驱动板22固定在副承载台200的承载面上；或者，副承载台200上设置有固定件，该固定件将驱动板22固定在副承载台200的承载面上。当然，也可以通过其他方式将驱动板22固定在副承载台200上。
驱动机构配置为，驱动副承载台200相对于主承载台100进行翻转，从而将驱动板22翻折至主面板21背离主承载台100的一侧。
位置获取机构配置为，获取翻折后的显示面板上的第一对位标记 A1和第二对位标记A2的位置。其中，位置获取机构获取第一对位标记A1、第二对位标记A2的位置的方式不做具体限定。例如，可以通过图像采集的方式获取第一对位标记A1和第二对位标记A2的位置。
控制机构配置为，判断各组对位标记中的第一对位标记A1和第二对位标记A2是否均位于相应的预设位置。当所述第一对位标记A1、所述第二对位标记A2中存在未处于相应的预设位置的一者或几者时，控制机构发出控制信号。如上文所述，显示面板包括两个驱动板22，当显示面板的驱动板22和主面板21位于同一平面上时，同一组对位标记中的第一对位标记A1和第二对位标记A2位于同一直线上。这种情况下，控制机构具体配置为，判断每组对位标记中的第一对位标记A1和第二对位标记A2是否位于同一直线上，当任意一组对位标记中的第一对位标记A1和第二对位标记A2均位于同一直线上时，则确定各组对位标记中的第一对位标记A1和第二对位标记A2均位于相应的预设位置；当至少一组对位标记中的第一对位标记A1和第二对位标记A2不在同一直线上时，判定所述第一对位标记A1、所述第二对位标记A2中存在未处于相应的预设位置的一者或几者，从而发出控制信号。
调整机构配置为，根据控制信号调整副承载台200的位置，直至各组对位标记中的第一对位标记A1、第二对位标记A2均位于相应的预设位置为止。
在本公开实施例中，在副承载台200相对于主承载台100进行翻转，而使驱动板22翻折至主面板21背离主承载台100的一侧之后，位置获取机构可以获取第一对位标记A1和第二对位标记A2的位置，若至少一个第一对位标记A1或至少一个第二对位标记A2未处于相应的预设位置，则调整机构会调整副承载台200的位置，从而调整驱动板22的位置，直至每个第一对位标记A1和每个第二对位标记A2均处于各自对应的预设位置，此时，翻折后的显示面板的形状为目标形 状。
在一些实施例中，翻折装置还可以包括涂胶机构和固化机构。其中，控制机构还配置为，在驱动机构驱动副承载台200进行翻转之前，发出涂胶信号；以及在判断出各组对位标记中的第一对位标记A1和第二对位标记A2均位于相应的预设位置之后，发出固化信号。涂胶机构配置为，根据涂胶信号在柔性连接件23a背离副承载台200的表面上涂覆粘结胶；当然，涂胶机构还可以在驱动板22上的部分区域和主面板21上的部分区域均涂覆粘结胶。固化机构配置为根据固化信号对粘结胶进行固化。
在粘结胶固化之前，驱动板22弯折至主面板21背离主承载台100的一侧，并与主面板21进行初步的粘结。粘结胶固化前的粘性很小，此时，仍然能够对翻折后的显示面板的形状进行调整。当调整结束之后，对粘结胶进行固化，从而对显示面板定型。
本公开实施例中对涂胶机构和固化机构的结构不作具体限定，例如，涂胶机构可以包括设置在副承载台200上方的容器，容器用于容纳并输出粘结胶。固化机构可以包括固化灯，例如，紫外灯。
下面结合附图对本公开实施例中的翻折装置进行具体介绍。
如图4至图6所示，副承载台200的数量为两个，两个副承载台200分别设置在主承载台100沿第一方向的两侧，每个副承载台200用于承载并固定一个驱动板22。当然，副承载台200的数量也可以为其他数量，例如，三个或四个。
其中，在副承载台200相对于主承载台100进行翻折之前，副承载台200的承载面与主承载台100的承载面位于同一水平面上，从而使显示面板在翻折前能够水平放置。副承载台200相对于主承载台100进行翻转之后，副承载台200的承载面与主承载台100的承载面相对设置。
主承载台100沿第二方向的相对两侧设置有侧板500，侧板500和主承载台100保持相对固定。例如，侧板500和主承载台100均设置在底座上。又例如，侧板500固定在主承载台100上。
副承载台200设置在安装架600上，驱动机构在驱动副承载台200转动时，具体通过驱动安装架600相对于侧板500进行转动，来带动副承载台200相对于主承载台100翻转。其中，驱动机构包括驱动电机，当翻折装置包括两个副承载台200时，两个副承载台200所在的安装架600可以由同一个驱动电机进行驱动，也可以由两个驱动电机分别进行控制，这里不做限定。当两个安装架600由同一个驱动电机来驱动时，驱动电机可以通过一传动机构来同时控制两个安装架600相对于侧板500进行转动，传动机构可以采用齿轮、齿条等结构，或者采用其他本领域技术人员所熟知的结构，这里不做限定。
图7为本公开的一些实施例中提供的副承载台设置在安装架上的示意图，如图7所示，安装架600包括相对设置的第一安装臂601和第二安装臂602、以及固定连接在第一安装臂601与第二安装臂602之间的连接臂603；第一安装臂601和第二安装臂602均与侧板500转动连接。例如，第一安装臂601和第二安装臂602均通过第一转轴604与侧板500转动连接。副承载台200连接在第一安装臂601和第二安装臂602之间。
图8为沿图7中AA'线的剖视图，如图7和图8所示，第一安装臂601朝向第二安装臂602的一侧以及第二安装臂602朝向第一安装臂601的一侧可以设置有安装槽V。副承载台200两端均设置有承载台安装件605，承载台安装件605的至少一部分伸入安装槽V内；承载台安装件605能够沿第一安装臂601的延伸方向与安装架600发生相对位移。需要说明的是，副承载台200的两端是指，副承载台200靠近第一安装臂601的端部和靠近第二安装臂602的端部。副承载台 200与连接壁603之间设置有至少一个弹性伸缩件606，弹性伸缩件606的两端分别连接副承载台200和连接臂603。例如，弹性伸缩件606的数量为两个，弹性伸缩件606为弹簧。
连接壁603上设置有至少一个支撑件607，支撑件607包括朝向副承载台200的支撑端。例如，支撑件607的数量为两个，支撑件607为顶丝。支撑件607具有伸出状态和缩回状态，支撑件607处于伸出状态时支撑端与连接臂603之间的距离大于支撑件607处于缩回状态时支撑端与连接臂603之间的距离，并大于弹性伸缩件606处于自然状态时的长度。弹性伸缩件606处于自然状态是指，弹性伸缩件606未受到拉力和压力时的状态。在一个示例中，连接臂603上开设有沿安装孔，支撑件607的一部分设置在安装孔中，且支撑件607可以沿安装孔的轴向伸缩，其中，安装孔的轴向与第一安装臂601的延伸方向相同。
在一些实施例中，可以在驱动安装架600相对于主承载台100转动之前，使支撑件607达到伸出状态，从而使弹性伸缩件606处于拉伸状态，以对副承载台200施加拉力；在副承载台200相对于主承载台100进行翻转时，使支撑件607切换至缩回状态，此时，弹性伸缩件606将在显示面板的翻折过程中持续对副承载台200施加拉力，拉力方向从副承载台200指向连接臂603，当副承载台200转动90°之后(即，副承载台200的承载面与主承载台100的承载面之间的角度小于90°时)，弹性伸缩件606对副承载台200所施加的拉力，使得柔性衬底23与承载板21a的侧面之间不会产生过大的间隙。
在一些实施例中，承载台安装件605的上表面和/或下表面设置有滚动件608，从而尽量减小承载台安装件605与安装槽V的内壁之间的摩擦力。例如，滚动件608可以为球形柱塞。
如图4所示，位置获取机构包括：第一图像采集单元301和第二 图像采集单元302，第一图像采集单元301配置为通过图像采集的方式，获取翻折后显示面板的第一对位标记的位置；第二图像采集单元302配置为通过图像采集的方式，获取翻折后显示面板的第二对位标记的位置。
在一些示例中，第一图像采集单元301的数量为多个，第一图像采集单元301与显示面板上的第一对位标记一一对应，第一图像采集单元301的位置可以根据第一对位标记的预设位置来确定。例如，第一图像采集单元301为摄像头，每个第一图像采集单元301的位置满足：当翻折后的显示面板呈目标形状时，第一图像采集单元301的镜头的中部与相应的第一对位标记正对。由于摄像头具有一定的视野范围，因此，即使第一对位标记发生一定的位置偏差，仍能够被摄像头捕捉到。类似地，第二图像采集单元302的数量为多个，第二图像采集单元302与显示面板上的第二对位标记一一对应。例如，第二图像采集单元302为摄像头，每个第二图像采集单元302的位置满足：当翻折后的显示面板呈目标形状时，第二图像采集单元302的镜头的中部与相应的第二对位标记正对。
如上文所述，当显示面板处于平整状态时，第一对位标记、发光器件、第二对位标记、驱动电路位于柔性衬底23的同一侧，承载板21a与发光器件设置在柔性衬底23的相对两侧，并且，主面板21放置在主承载台100上时，承载板21a位于柔性衬底23背离主承载台100的一侧。也就是说，第一对位标记位于柔性衬底23朝向主承载台100的一侧，而当驱动板22翻折至与主面板21相对的位置时，第二对位标记位于柔性衬底23上方。这种情况下，可以在主承载台100上设置容纳孔，第一图像采集单元301设置在容纳孔中。将副承载台200设置为透明，第二图像采集单元302设置在主承载台100上方，例如，设置在主承载台100上方的支架上。其中，第二图像采集单元302的 位置可以固定不变，也可以将支架设置为可移动支架，从而使得第二图像采集单元302的位置可调节。其中，本公开中所谓的“透明”是指透光率在80％以上。
如图6和图7所示，调整机构包括多个驱动器400，其中，第一安装臂601和第二安装臂602上均设置有驱动器400。副承载台200具有靠近第一安装臂601的第一端、以及靠近第二安装臂602的第二端，第一安装臂601上的驱动器400配置为，根据所述控制信号驱动副承载台200的第一端靠近或远离连接臂603移动；第二安装臂602上的驱动器配置为，根据控制信号驱动副承载台200的第二端靠近或远离连接臂603移动。
如图8所示，副承载台200具有与其承载面相对的背面，承载台安装件605包括承托部，承托部位于副承载台200的背面。承托部上设置有凸部609，该凸部609延伸至驱动器400所在位置，从而使驱动器400可以驱动凸部609靠近或远离连接臂603移动，进而带动副承载台200的端部靠近或远离连接臂603移动。在一个示例中，驱动器400可以采用压电陶瓷驱动器，从而驱动副承载台200进行微米级别的位移，进而提高驱动精度。
图9为本公开的一些实施例中提供的显示面板的翻折方法的示意图，该翻折方法用于上述翻折装置。如图9所示，翻折方法包括：
S1、将显示面板的主面板固定在主承载台上，并将驱动板固定在副承载台上。
S2、控制副承载台相对于主承载台翻转，以将驱动板翻折至主面板背离主承载台的一侧。
S3、获取翻折后的显示面板上第一对位标记和第二对位标记的位置。
S4、判断各组对位标记中的第一对位标记和第二对位标记是否均 位于相应的预设位置。其中，当各组对位标记中的第一对位标记和第二对位标记位于相应的预设位置时，翻折后的显示面板的形状为目标形状。
S5、当第一对位标记、第二对位标记中存在未处于相应的预设位置的一者或几者时，调整副承载台的位置，直至各组对位标记中的第一对位标记、第二对位标记均位于相应的预设位置为止。
图10为本公开的另一些实施例中提供的显示面板的翻折方法的示意图，如图10所示，包括以下步骤S1～S6：
步骤S1、将显示面板的主面板固定在主承载台上，并将驱动板固定在副承载台上。同时，将柔性连接件的一部分固定在副承载台上。
步骤S2、控制副承载台相对于主承载台翻转，以将驱动板翻折至主面板背离主承载台的一侧。
步骤S21、至少在柔性连接件背离副承载台的表面上形成粘结胶。其中，粘结胶在固化前的粘性小于粘结胶在固化后的粘性。
步骤S3、获取翻折后的显示面板上第一对位标记和第二对位标记的位置。其中，步骤S3具体包括：通过图像采集的方式，获取第一对位标记和第二对位标记的位置。
步骤S4、判断各组对位标记中的第一对位标记和第二对位标记是否均位于相应的预设位置。
可选地，当显示面板处于展平状态时，同一组对位标记中的第一对位标记和第二对位标记位于同一直线上，这种情况下，该步骤S4具体包括：判断每组对位标记中的第一对位标记和第二对位标记是否位于同一直线上，当任意一组对位标记中的第一对位标记和第二对位标记位于同一直线上时，则确定各组对位标记中的第一对位标记和第二对位标记均位于相应的预设位置；当至少一组对位标记中的第一对位标记和第二对位标记不在同一直线上时，判定第一对位标记、第二对 位标记中存在未处于相应的预设位置的一者或几者。
步骤S5、当所述第一对位标记、所述第二对位标记中存在未处于相应的预设位置的一者或几者时，调整副承载台的位置，直至各组对位标记中的第一对位标记、第二对位标记均位于相应的预设位置为止。
步骤S6、对粘结胶进行固化。例如，采用紫外光照的方式进行固化。
在本公开实施例中，在将驱动板翻折至主面板背离主承载台的一侧之后，获取第一对位标记和第二对位标记的位置，并且，当至少一个第一对位标记或至少一个第二对位标记A2未处于相应的预设位置时，则调整副承载台的位置，从而调整驱动板的位置，直至每个第一对位标记和每个第二对位标记均处于各自对应的预设位置，此时，翻折后的显示面板的形状为目标形状，从而使得多个翻折后的显示面板拼接成大尺寸显示屏时，显示面板的拼接缝满足要求。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。
Claims (13)
- 一种显示面板的翻折方法，其中，所述显示面板包括主面板、以及与所述主面板连接的至少一个驱动板，所述显示面板上设置有至少一组对位标记，每组对位标记包括：位于所述主面板上的第一对位标记和位于所述驱动板上的第二对位标记；所述翻折方法包括：将所述显示面板的主面板固定在主承载台上，并将所述驱动板固定在副承载台上；控制所述副承载台相对于所述主承载台翻转，以将所述驱动板翻折至所述主面板背离所述主承载台的一侧；获取翻折后的显示面板上第一对位标记和第二对位标记的位置，并判断各组对位标记中的第一对位标记和第二对位标记是否均位于相应的预设位置；当所述第一对位标记、所述第二对位标记中存在未处于相应的预设位置的一者或几者时，调整所述副承载台的位置，直至各组对位标记中的第一对位标记、第二对位标记均位于相应的预设位置为止。
- 根据权利要求1所述的翻折方法，其中，在每组对位标记中，所述第一对位标记和所述第二对位标记的数量之和大于2；当所述显示面板中的两个所述驱动板和所述主面板位于同一平面上时，同一组对位标记中的第一对位标记和第二对位标记位于同一直线上；所述判断各组对位标记中的第一对位标记和第二对位标记是否均位于相应的预设位置，具体包括：判断同一组对位标记中的第一对位标记和第二对位标记是否位于同一直线上，当任意一组对位标记中的第一对位标记和第二对位标记位于同一直线上时，则确定各组对位标记中的第一对位标记和第二对位标记均位于相应的预设位置；当至少一组对位标记中的第一对位标记和第二对位标记不在同一直线上时，判定所述第一对位标记、所述第二对位标记中存在未处于相应的预设位置的一者或几者。
- 根据权利1或2所述的翻折方法，其中，所述获取翻折后的显示面板上第一对位标记和第二对位标记的位置，具体包括：通过图像采集的方式，获取翻折后的显示面板上的所述第一对位标记和所述第二对位标记的位置。
- 根据权利要求1或2所述的翻折方法，其中，每个所述驱动板通过柔性连接件与所述主面板连接；所述翻折方法还包括：将所述驱动板固定在副承载台上的同时，还将所述柔性连接件的一部分固定在所述副承载台上；在控制所述副承载台相对于所述主承载台翻转之前，至少在所述柔性连接件背离所述副承载台的表面上形成粘结胶；在各组对位标记中的第一对位标记、第二对位标记均位于相应的预设位置之后，对所述显示面板上的粘结胶进行固化。
- 一种翻折装置，用于对显示面板进行翻折，其中，所述显示面板包括：主面板、以及与所述主面板连接的至少一个驱动板，所述显示面板上设置有至少一组对位标记，每组对位标记均包括：位于所述主面板上的第一对位标记和位于所述驱动板上的第二对位标记；所述翻折装置包括：主承载台，配置为承载并固定所述主面板；副承载台，配置为承载并固定所述驱动板；驱动机构，配置为驱动所述副承载台相对于所述主承载台进行翻转，以将所述驱动板翻折至所述主面板背离所述主承载台的一侧；位置获取机构，配置为获取翻折后的显示面板上第一对位标记和第二对位标记的位置；控制机构，配置为判断各组对位标记中的第一对位标记和第二对 位标记是否均位于相应的预设位置，并在所述第一对位标记、所述第二对位标记中存在未处于相应的预设位置的一者或几者时，发出控制信号；调整机构，配置为根据所述控制信号调整所述副承载台的位置，直至各组对位标记中的第一对位标记、第二对位标记均位于相应的预设位置为止。
- 根据权利要求5所述的翻折装置，其中，在每组对位标记中，所述第一对位标记和所述第二对位标记的数量之和大于2；所述显示面板包括两个所述驱动板，两个所述驱动板分别位于所述主面板的相对两侧，当所述显示面板中的两个所述驱动板和所述主面板位于同一平面上时，同一组对位标记中的第一对位标记和第二对位标记位于同一直线上；所述控制机构具体配置为，判断每组对位标记中的第一对位标记和第二对位标记是否位于同一直线上，当任意一组对位标记中的第一对位标记和第二对位标记位于同一直线上时，则确定各组对位标记中的第一对位标记和第二对位标记均位于相应的预设位置；当至少一组对位标记中的第一对位标记和第二对位标记不在同一直线上时，判定所述第一对位标记、所述第二对位标记中存在未处于相应的预设位置的一者或几者。
- 根据权利要求5或6所述的翻折装置，其中，所述位置获取机构包括：第一图像采集单元，配置为通过图像采集的方式，获取翻折后的显示面板上的所述第一对位标记的位置；第二图像采集单元，配置为通过图像采集的方式，获取翻折后的显示面板上的所述第二对位标记的位置。
- 根据权利要求5或6所述的翻折装置，其中，所述翻折装置还包括：侧板，设置在所述主承载台的相对两侧；安装架，包括相对设置的第一安装臂和第二安装臂、以及固定连接在所述第一安装臂与所述第二安装臂之间的连接臂；所述第一安装臂和所述第二安装臂均与所述侧板转动连接；其中，所述副承载台连接在所述第一安装臂和所述第二安装臂之间；所述驱动机构具体配置为驱动所述安装架相对于所述侧板进行转动，以带动所述副承载台相对于所述主承载台翻转。
- 根据权利要求8所述的翻折装置，其中，所述调整机构包括：多个驱动器，所述第一安装臂和所述第二安装臂上均设置有所述驱动器；所述驱动器配置为，根据所述控制信号驱动所述副承载台的端部靠近或远离所述连接臂移动。
- 根据权利要求9所述的翻折装置，其中，所述驱动器包括压电陶瓷驱动器。
- 根据权利要求9所述的翻折装置，其中，所述第一安装臂朝向所述第二安装臂的一侧以及所述第二安装臂朝向所述第一安装臂的一侧均设置有安装槽；所述翻折装置还包括：设置在所述副承载台两端的承载台安装件，所述承载台安装件的至少一部分伸入所述安装槽内；所述承载台安装件能够沿所述第一安装臂的延伸方向与所述安装架发生相对位移；弹性伸缩件，其两端分别与所述副承载台、所述连接臂连接；支撑件，设置在所述连接臂上，所述支撑件包括朝向所述副承载台的支撑端；其中，所述支撑件具有伸出状态和缩回状态，所述支撑件处于伸出状态时所述支撑端与所述连接臂之间的距离大于所述支撑件处于缩回状态时所述支撑端与所述连接臂之间的距离，并大于所述弹性伸缩件处于自然状态时的长度。
- 根据权利要求5或6所述的翻折装置，其中，所述副承载台具有用于承载所述驱动板的承载面，所述副承载台上设置有真空吸附孔，所述真空吸附孔的一端位于所述副承载台的承载面上。
- 根据权利要求5或6所述的翻折装置，其中，每个所述驱动板通过柔性连接件与所述主面板连接，所述副承载台还配置为承载所述柔性连接件的一部分；所述控制机构还配置为，在所述驱动机构驱动所述副承载台进行翻转之前，发出涂胶信号；以及在判断出所述各组对位标记中的第一对位标记和第二对位标记均位于相应的预设位置之后，发出固化信号；所述翻折装置还包括：涂胶机构，配置为根据所述涂胶信号在所述柔性连接件背离所述副承载台的表面上涂覆粘结胶；固化机构，配置为根据所述固化信号对所述粘结胶进行固化。
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