Display panel, jig and method for preparing display panel using the same

Abstract

A display panel, a jig for a display panel, and a method for preparing a display panel using the same, wherein the display panel comprises a display substrate and a support portion; the display substrate comprises a display portion and a bent portion located at least on one side of the display portion, the display portion comprises a main display portion and a curved display portion located at at least on one side of the main display portion, the curved display portion is connected to the main display portion and the bent portion, respectively, the bent portion is bent and located on the back side of the display portion opposite to the display side of the display panel, and a receiving space is formed between the bent portion and the curved display portion; the support portion is at least partially located in the receiving space between the bent portion and the curved display portion, and is in contact with the bent portion and the curved display portion, respectively. The display panel can stably support the curved display portion and / or the bent portion of the display substrate, thereby avoiding or reducing the dislocation or movement of the edge of the display panel.

Description

[0001] This application is a divisional application of Chinese patent application No. 201910814922.9 filed on August 30, 2019. Technical Field

[0002] Embodiments of the present disclosure relate to a display panel, a jig, and a method for manufacturing the display panel using the same. Background Art

[0003] Organic Light-Emitting Diode (OLED) display devices have the advantages of thin thickness, light weight, wide viewing angle, active light emission, continuously adjustable light color, low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high luminous efficiency and flexible display. They are increasingly used in display fields such as mobile phones, tablet computers, and digital cameras.

[0004] At present, with the continuous development of display technology, flexible display devices have been increasingly widely used in various fields such as education, medical treatment, and entertainment. Flexible OLED display devices with many advantages have become one of the main research directions. Summary of the invention

[0005] At least one embodiment of the present disclosure provides a display panel, comprising a display substrate and a supporting portion, wherein the display substrate comprises a display portion and a bent portion located at at least one side of the display portion, the display portion comprises a main display portion and a curved display portion located at at least one side of the main display portion, the curved display portion is respectively connected to the main display portion and the bent portion, the bent portion is bent and located at the back side of the display portion opposite to the display side of the display panel, and a receiving space is formed between the bent portion and the curved display portion; the supporting portion is at least partially located in the receiving space between the bent portion and the curved display portion, and is respectively in contact with the bent portion and the curved display portion.

[0006] For example, in the display panel provided by at least one embodiment of the present disclosure, the side of the support portion in contact with the curved display portion is a curved surface having the same shape profile as the side of the curved display portion facing the support portion.

[0007] For example, in the display panel provided by at least one embodiment of the present disclosure, the portion of the support portion in contact with the bent portion and the portion of the support portion in contact with the curved display portion are both sticky.

[0008] For example, in the display panel provided by at least one embodiment of the present disclosure, the viscosity of the portion where the support portion contacts the bent portion and the portion where the support portion contacts the curved display portion is not less than 2000 gf / inch.

[0009] For example, in the display panel provided by at least one embodiment of the present disclosure, the support portion includes an adhesive material to form at least an adhesive portion in contact with the bent portion and an adhesive portion in contact with the curved display portion.

[0010] For example, in the display panel provided by at least one embodiment of the present disclosure, the support portion is also in contact with the main display portion.

[0011] For example, the display panel provided by at least one embodiment of the present disclosure also includes a first circuit board, wherein the first circuit board is located on the back side of the main display portion opposite to the display side of the display panel, and is configured to be electrically connected to the bent portion.

[0012] For example, the display panel provided by at least one embodiment of the present disclosure further includes a flexible circuit board, wherein the flexible circuit board is located between the first circuit board and the bending portion, and is configured to electrically connect the first circuit board and the bending portion.

[0013] For example, in the display panel provided by at least one embodiment of the present disclosure, when the side where the supporting portion contacts the bending portion is a plane, the flexible circuit board is bent along the edge of the side where the supporting portion contacts the bending portion away from the curved display portion, so that the first circuit board is located on the back side of the main display portion.

[0014] For example, in the display panel provided in at least one embodiment of the present disclosure, the display panel is an organic light emitting diode display panel or a quantum dot light emitting diode display panel.

[0015] At least one embodiment of the present disclosure further provides a jig for a display panel, comprising a carrier, wherein the carrier comprises a concave loading surface and a supporting surface located on at least one side of the loading surface; the display substrate of the display panel comprises a display portion and a bent portion located on at least one side of the display portion, the display portion comprises a main display portion and a curved display portion located on at least one side of the main display portion, the curved display portion is connected to the main display portion and the curved portion, respectively, the loading surface is used to accommodate the display portion of the display panel, the loading surface comprises a first main surface and a second curved concave surface located on at least one side of the first main surface, the first main surface is used to accommodate the main display portion, the second curved concave surface is used to accommodate the curved display portion, the supporting surface is used to support the bent portion of the display panel, the supporting surface is connected to a side of the second curved concave surface away from the first main surface and is located on a side of the second curved concave surface away from the first main surface.

[0016] For example, in the fixture provided in at least one embodiment of the present disclosure, a plurality of first adsorption holes are provided on the carrying surface of the carrier, and the plurality of first adsorption holes are used to allow the display portion of the display panel to be adsorbed on the carrying surface.

[0017] For example, in the jig provided in at least one embodiment of the present disclosure, the carrier includes a main body portion and a loading portion located on the main body portion, the loading portion includes the loading surface and the supporting surface, and a plurality of second adsorption holes are provided on a surface of the main body portion facing the loading portion, and the plurality of second adsorption holes are used to allow the loading portion to be adsorbed onto the main body portion.

[0018] For example, the jig provided by at least one embodiment of the present disclosure also includes a clamp, wherein the clamp is used to pick up the circuit board of the display panel and is configured to be movable from a side of the support surface away from the loading surface to the first main surface of the carrier.

[0019] For example, the jig provided in at least one embodiment of the present disclosure further includes a pressing portion, wherein the pressing portion is configured to be able to approach the object loading surface in a direction perpendicular to the first main body surface of the carrier.

[0020] At least one embodiment of the present disclosure also provides a method for preparing a display panel using the jig described in any embodiment of the present disclosure, comprising: placing a display substrate to be bent on the carrier, wherein the display substrate to be bent includes a display portion and a bending portion located on at least one side of the display portion, the display portion includes a main display portion and a curved display portion located on at least one side of the main display portion, the curved display portion is respectively connected to the main display portion and the bending portion, the display portion of the display substrate to be bent is located on the carrier surface, the main display portion of the display portion is in contact with the first main surface, the curved display portion of the display portion is in contact with the second curved concave surface, and the bending portion of the display substrate to be bent is located on the supporting surface; placing a supporting portion on the display portion of the display substrate to be bent, wherein the supporting portion is in contact with the curved display portion; and bending the bending portion to the top of the display portion and in contact with the supporting portion.

[0021] For example, the preparation method provided by at least one embodiment of the present disclosure also includes: providing a first circuit board, and connecting the first circuit board to the bending part of the display substrate to be bent through a flexible circuit board; wherein the jig includes a clamp to bend the bending part to above the display part, including: picking up the first circuit board with the clamp, and allowing the clamp to drive the first circuit board to move from the side of the supporting surface away from the loading surface to the first main body surface of the carrier, so as to bend the bending part to above the display part through the flexible circuit board.

[0022] For example, in the preparation method provided by at least one embodiment of the present disclosure, the jig includes a pressing portion, and after the bending portion is bent to above the display portion and in contact with the supporting portion, the preparation method further includes: placing the pressing portion on the bending portion and bringing the pressing portion close to the loading surface to press the bending portion, the supporting portion and the curved display portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure.

[0024] Figure 1A A schematic diagram of a partial structure of a display panel provided in some embodiments of the present disclosure;

[0025] Figure 1B Shows Figure 1A A partial view of an exemplary display device structure layer of a display panel in FIG.

[0026] Figure 1C A schematic diagram of a partial structure of another display panel provided in some embodiments of the present disclosure;

[0027] Figure 2 A schematic structural diagram of a carrier of a jig for display panels provided in some embodiments of the present disclosure;

[0028] Figure 3 A schematic structural diagram of another carrier of a jig for display panels provided in some embodiments of the present disclosure;

[0029] Figure 4 A flowchart of a method for preparing a display panel using a jig provided in an embodiment of the present disclosure is provided for some embodiments of the present disclosure;

[0030] Figures 5A-5F A schematic diagram of an example of steps of a method for preparing a display panel using a jig provided in an embodiment of the present disclosure, provided in some embodiments of the present disclosure;

[0031] Fig. 6A for Figure 5B A schematic diagram of a planar structure of a display substrate to be bent as shown in ; and

[0032] Figure 6B for Figure 5C Schematic diagram of the planar structure of the display substrate to be bent and the supporting portion shown in FIG. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0034] Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantitative restrictions, but indicate that there is at least one. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0035] At present, in order to realize the design scheme of full-screen display of flexible display panel, the edge of flexible display panel is usually designed as a circular arc-shaped curved surface, and part of the display substrate of the display panel is bent to the back side of the display area, so that the flexible display panel can meet the edge display requirements. However, after the display substrate is bent, the necessary support and fixation between the bent part of the display substrate and the curved display part of the edge are often lacking, which makes the edge of the display panel easily affected by the external environment such as squeezing or impact, and moves and dislocates, thereby causing serious adverse effects on the structure and performance of the display panel. In addition, due to the lack of support between the bent part of the display substrate and the curved display part of the edge after bending, when the display substrate is bent, the bending angle of the display substrate is difficult to determine and fix, which makes it difficult to ensure the bending effect of the display substrate, and even causes the display substrate to be dead folded when bent.

[0036] At least one embodiment of the present disclosure provides a display panel, which can provide stable support for the bent portion and / or the curved display portion respectively by disposing a support portion between the bent portion and the curved display portion of a display substrate, thereby avoiding or reducing the movement or misalignment of the edge of the display panel, thereby improving the structural stability of the display panel, improving the overall performance of the display panel, and enhancing the full-screen display effect of the display panel.

[0037] In the following, some embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that the same reference numerals in different drawings will be used to refer to the same elements that have been described.

[0038] At least one embodiment of the present disclosure provides a display panel, which includes a display substrate and a support portion. The display substrate includes a display portion and a bent portion located at at least one side of the display portion, the display portion includes a main display portion and a curved display portion located at at least one side of the main display portion, the curved display portion is connected to the main display portion and the bent portion, respectively, the bent portion is bent and located at the back side of the display portion opposite to the display side of the display panel, and a receiving space is formed between the bent portion and the curved display portion; the support portion is at least partially located in the receiving space between the bent portion and the curved display portion, and is in contact with the bent portion and the curved display portion, respectively.

[0039] Figure 1A A schematic diagram of a partial structure of a display panel provided in some embodiments of the present disclosure. Figure 1AAs shown, the display panel 10 includes a display substrate and a support portion 110. The display substrate includes a display portion 120 and a bent portion 130 located at at least one side of the display portion 120. The display portion 120 includes a main display portion 140 and a curved display portion 150 located at at least one side of the main display portion 140. The curved display portion 150 is connected to the main display portion 140 and the bent portion 130, respectively. The bent portion 130 is bent and located at the back side of the display portion 120 opposite to the display side of the display panel 10, and a receiving space is formed between the bent portion 130 and the curved display portion 150. The support portion 110 is at least partially located in the receiving space between the bent portion 130 and the curved display portion 150, and is in contact with the bent portion 130 and the curved display portion 150, respectively.

[0040] In the display panel 10, by arranging a support portion 110 that contacts the bending portion 130 and the curved display portion 150 respectively in the accommodating space formed between the bending portion 130 and the curved display portion 150, both the bending portion 130 and the curved display portion 150 can be stably supported, thereby avoiding or reducing movement or misalignment between the bending portion 130 and the curved display portion 150, thereby improving the structural stability of the display panel 10, improving the overall performance of the display panel 10, and enabling the display panel 10 to achieve a better full-screen display effect.

[0041] Furthermore, in the process of preparing the display panel 10, when the display substrate is bent, since the support portion 110 can provide stable support for the bent portion 130 where the display substrate is bent to the back side of the display portion 120, the phenomenon of dead folding of the display substrate when being bent can be avoided, thereby improving the yield of the prepared display panel 10, which is conducive to the mass production and use of the display panel 10.

[0042] In addition, by providing the support portion 110, the bending angle of the bending portion 130 of the display substrate can be further controlled and kept fixed, so that the display substrate can be bent at a predetermined angle to achieve a predetermined bending effect. For example, the support portion 110 is in a long strip shape. During the preparation of the display panel 10, the display substrate can be bent along the side periphery of the support portion 110, so that the bending angle and bending effect of the display substrate can be kept stable, so that the preparation process of the display panel 10 can be optimized, the preparation accuracy and yield of the display panel 10 can be improved, and it is conducive to the mass production and use of the display panel 10.

[0043] It should be noted that in Figure 1AIn some embodiments of the present disclosure shown, the shape of the display panel 10 can be a square, a rectangle or other suitable shapes; or, in some other embodiments of the present disclosure, according to different actual needs, the display panel 10 can also adopt other regular or irregular shape contours such as triangles, pentagons, etc., and the embodiments of the present disclosure are not limited to this.

[0044] It should be noted that in Figure 1A In some embodiments of the present disclosure shown in the figure, only the bent portion 130 of the display substrate located on one side of the display portion 120 is shown, while in some other embodiments of the present disclosure, according to the actual shape and contour of the display panel or different design requirements, the display panel may also include bent portions located on both sides or more sides of the display portion. Figure 1A In some embodiments of the present disclosure shown, only the curved display parts 150 of the display substrate located on both sides of the main display part 140 are shown, while in some other embodiments of the present disclosure, the display panel may also include a curved display part located only on one side of the main display part, or multiple curved display parts located on multiple sides of the main display part. The embodiments of the present disclosure are not limited to this.

[0045] For example, Figure 1A As shown, the side surface of the supporting portion 110 in contact with the curved display portion 150 is a curved surface with the same shape profile as the curved display portion 150, for example, a curved surface with the same shape profile as the side of the curved display portion 150 facing the supporting portion 110 (i.e., the inner side of the curved display portion 150). As a result, the supporting portion 110 and the curved display portion 150 can be better fitted, so that the supporting portion 110 can provide more stable support for the curved display portion 150, avoid or reduce the movement, dislocation or deformation of the curved display portion 150, and further improve the stability of the structure of the display panel 10.

[0046] For example, when the cross-sectional shape of the curved display portion 150 is a 1 / 4 arc shape, the support portion 110 can be correspondingly designed as a 1 / 4 cylinder to achieve a better fit with the curved display portion 150 , thereby providing a more stable support for the curved display portion 150 .

[0047] For example, in Figure 1A In some embodiments of the present disclosure shown, the support portion 110 is completely in contact with the side of the curved display portion 150 facing the support portion 110, that is, the support portion 110 contacts various areas of the side of the curved display portion 150 facing the support portion 110, so as to provide uniform and stable support to various parts of the curved display portion 150.

[0048] In some other embodiments of the present disclosure, the support portion may also be configured to be in contact with only a portion of the area on the side of the curved display portion facing the support portion, that is, as long as the support portion can provide stable support for the curved display portion, the embodiment of the present disclosure does not limit the size of the contact area between the support portion and the curved display portion. Correspondingly, in some other embodiments of the present disclosure, the support portion may also be configured to be in contact with only a portion of the area on the side of the bent portion facing the support portion, that is, as long as the support portion can provide stable support for the bent portion, the embodiment of the present disclosure does not limit the size of the contact area between the support portion and the bent portion.

[0049] For example, in some other implementations of the present disclosure, the support portion may also be in contact with the main display portion.

[0050] For example, in Figure 1A Based on the embodiment shown, Figure 1C As shown, the support portion 210 of the display panel 20 may further include a portion extending to the back side of the main display portion 240 and in contact with the main display portion 240, thereby increasing the contact area between the support portion 210 and the display portion 220. Thus, while the support portion 210 further provides support for the main display portion 240, the support portion 210 may also provide more stable support for the bent portion 230 and the curved display portion 250, thereby more effectively avoiding or reducing movement and misalignment between the bent portion 230 and the curved display portion 250, and significantly improving the structural stability of the display panel 20.

[0051] It should be noted that Figure 1C The display panel 20 shown in FIG. 1 has the same structure and function as the display panel 20 except for the portion where the support portion 210 contacts the main display portion 240. Figure 1A The display panel 10 shown in FIG. 1 is substantially the same as that in FIG. 1 , and will not be described in detail herein.

[0052] For example, in Figure 1AIn some embodiments of the present disclosure shown, the side of the support portion 110 in contact with the bent portion 130 is a plane, and the height of the support portion 110 (i.e., the size of the support portion 110 in a direction perpendicular to the main display portion 140) is the same as the height of the curved display portion 150 (i.e., the size of the curved display portion 150 in a direction perpendicular to the main display portion 140), that is, the surface of the side of the support portion 110 in contact with the bent portion 130 is flush with the edge of the curved display portion 150. Thus, in the process of preparing the display panel 10, after the bent portion 130 is bent along the edge of the curved display portion 150, the bent portion 130 can maintain a stable horizontal state and completely fit with the side of the support portion 110 facing the bent portion 130, thereby reducing the gap between the bent portion 130 and the support portion 110, further increasing the contact area between the bent portion 130 and the support portion 110, so that the support portion 110 provides more stable support for the bent portion 130.

[0053] Furthermore, in the process of preparing the display panel 10, since the display substrate can be bent along the plane of the support portion 110 away from the display portion 120 and the bent portion 130 of the display substrate can remain in a horizontal state after being bent, the bending end point and bending angle of the display substrate can be precisely controlled, thereby achieving an ideal bending effect of the display substrate. Therefore, in the process of preparing the display panel 10, the setting of the support portion 110 can not only avoid the phenomenon of dead folding or cracking when the display substrate is bent, but also optimize the bending process of the display substrate, so that the bending angle and bending effect of the display substrate can remain stable, thereby reducing unnecessary errors that may occur when the display substrate is bent, and further improving the accuracy and yield of the prepared display panel 10.

[0054] In addition, since the bent portion 130 of the display substrate after bending and the side of the support portion 110 facing the bent portion 130 are both on a horizontal plane (i.e., in a plane parallel to the main display portion 140), when the bent portion 130, the support portion 110 and the curved display portion 150 are pressed together, the pressing equipment can be moved vertically in a direction perpendicular to the main display portion 140, thereby facilitating uniform pressing of the display panel 10, improving the pressing effect of the display panel 10, and further optimizing the preparation process of the display panel 10.

[0055] For example, in Figure 1AIn some embodiments of the present disclosure shown, the portion of the support portion 110 in contact with the bent portion 130 and the portion of the support portion 110 in contact with the curved display portion 150 are both sticky. Thus, the bent portion 130 and the curved display portion 150 can be firmly adhered to the support portion 110, so that the relative position between the bent portion 130 and the curved display portion 150 can be kept fixed, thereby further avoiding or reducing the movement or misalignment between the bent portion 130 and the curved display portion 150, and improving the stability of the structure of the display panel 10.

[0056] For example, the viscosity of the adhesive portion can be set to no less than 2000 gf / inch, so that the bending portion 130 and the curved display portion 150 can be firmly adhered to the support portion 110, thereby avoiding phenomena such as falling off, and further improving the structural stability of the display panel 10.

[0057] For example, in some embodiments of the present disclosure, a sticky adhesive layer may be provided only on the side of the support portion 110 that contacts the bending portion 130 and the curved display portion 150, so as to achieve adhesion between the bending portion 130 and the support portion 110 and between the curved display portion 150 and the support portion 110; or in some embodiments of the present disclosure, the support portion 110 itself may be designed to be made of a sticky material, that is, the support portion 110 itself has stickiness, and then the stickiness of the support portion 110 itself may be used to make the bending portion 130 and the curved display portion 150 adhere to the surface of the support portion 110, so as to support and fix the bending portion 130 and the curved display portion 150 through the support portion 110. The embodiments of the present disclosure are not limited to this.

[0058] For example, when the support portion 110 is made of a viscous material, the support portion 110 may be made of a softer viscous material such as foam to prevent excessive squeezing of the display substrate when the support portion 110 is adhered to the display substrate, thereby avoiding damage to the display substrate.

[0059] For example, Figure 1AAs shown, in some embodiments of the present disclosure, in order to enable the display panel 10 to realize a design scheme of full-screen display, the display panel 10 further includes a first circuit board 160 and a flexible circuit board 170. For example, the first circuit board 160 is located (for example, fixed) on the back side of the main display portion 140, and the flexible circuit board 170 is located between the first circuit board 160 and the bending portion 130. The contact pads of the flexible circuit board 170 are respectively bonded with the contact pads of the first circuit board 160 and the contact pads of the bending portion 130 by, for example, anisotropic conductive adhesive to establish electrical connection, thereby electrically connecting the first circuit board 160 to the bending portion 130 through the flexible circuit board 170. As a result, the first circuit board 160 and the flexible circuit board 170 are electrically connected to the display portion 120 through the bending portion 130 to transmit signals to each pixel unit of the display portion 120, so that the display panel 10 realizes the display function.

[0060] For example, Figure 1A As shown, the flexible circuit board 170 can be a chip-on-film (COF) provided with a driving chip 180, and then the display panel 10 provides a corresponding driving signal for display through the driving chip 180 to control the light-emitting state of each pixel unit of the display part 120, thereby driving the display panel 10 to perform corresponding display operations.

[0061] For example, Figure 1A As shown, in order to allow the first circuit board 160 to be completely attached to the back side of the main display portion 140, the flexible circuit board 170 connecting the first circuit board 160 and the bending portion 130 may be bent.

[0062] For example, in Figure 1A In some embodiments of the present disclosure shown, when the side where the support portion 110 contacts the bending portion 130 is flat, the flexible circuit board 170 can be bent along the edge of the side where the support portion 110 contacts the bending portion 130 and is away from the curved display portion 150, so that the bent flexible circuit board 170 can also be supported by the support portion 110 to maintain a relatively stable state while the first circuit board 160 is stably attached to the back side of the main display portion 140.

[0063] It should be noted that, in some embodiments of the present disclosure, the first circuit board 160 may be a circuit board made of a hard material, or may be a flexible circuit board made of a material similar to that of the flexible circuit board 170 , and the embodiments of the present disclosure are not limited to this.

[0064] For example, in Figure 1AIn some embodiments of the present disclosure shown, the display substrate includes a flexible substrate. A portion of the flexible substrate located in the display area of ​​the display panel 10 is provided with a plurality of pixel units arranged in an array, and the portion of the flexible substrate and the plurality of pixel units provided on the portion of the flexible substrate are configured as a display device structure layer 121 of the display portion 120, so that the display panel 10 realizes a display function. For example, a portion of the flexible substrate located outside the display area of ​​the display panel 10 is bent to the back side of the display portion 120 and is configured as a bent portion 130.

[0065] For example, Figure 1A As shown, the display device structure layer 121 is located in the display area of ​​the display panel 10, and each pixel unit in the display device structure layer 121 may include a light-emitting element, a pixel circuit, etc., and the pixel circuit may include, for example, a thin film transistor (TFT), etc., and the light-emitting element may include, for example, an organic light-emitting diode (OLED) or a quantum dot light-emitting diode (QLED). For example, a thin film transistor includes an active layer, a gate, and a source and drain; an organic light-emitting diode includes a driving electrode and a light-emitting layer arranged between the driving electrodes. For example, the display device structure layer 121 also includes a plurality of insulating layers arranged between the electrode layers of the thin film transistor and the organic light-emitting diode, for example, the plurality of insulating layers may include a buffer layer, a gate insulating layer, an intermediate dielectric layer, a planarization layer, and a pixel defining layer, etc. The embodiments of the present disclosure do not limit the specific structure of the pixel unit in the display device structure layer 121.

[0066] Figure 1B Shows Figure 1A A partial view of an exemplary display device structure layer of a display panel in FIG. Figure 1B As shown, the display device structure layer 121 includes a flexible substrate substrate 510, a light shielding portion 520, a thin film transistor, an organic light emitting diode and an encapsulation layer 530. The thin film transistor includes an active layer 541, a gate 543, and a source and drain 544. The organic light emitting diode includes a first drive electrode 551, a second drive electrode 552, and a light emitting layer 553 between the first drive electrode 551 and the second drive electrode 552. A plurality of insulating layers are arranged between each electrode layer. The plurality of insulating layers may include a buffer layer 561, a gate insulating layer 542, an intermediate dielectric layer 562, a planarization layer 563, and a pixel defining layer 554, etc. For example, Figure 1C The display device structure layer 121 shown can be used for an OLED display panel. In some other embodiments of the present disclosure, the display device structure layer 121 can also have other structures, which are not limited in the embodiments of the present disclosure.

[0067] For example, in Figure 1AIn some embodiments of the present disclosure shown, the structure of the display portion 120 of the display substrate may also include, for example, a protective layer 123 and a heat dissipation layer 122 stacked with the display device structure layer 121. The protective layer 123 is located on the display side of the display device structure layer 121 to protect the display device structure layer 121 and other devices or functional layers of the display panel 10. For example, the material of the protective layer 123 may be an inorganic material such as glass or an organic material such as polyimide. The heat dissipation layer 122 is located on the back side of the display device structure layer 121 to dissipate the heat generated by the display substrate during the display process. For example, the material of the heat dissipation layer 122 may be a metal material with good heat dissipation effect and ductility.

[0068] For example, in some other embodiments of the present disclosure, the structure of the display portion 120 may also include, for example, a touch electrode layer, a polarizing layer, or other suitable structural layers or functional layers, which are not limited in the embodiments of the present disclosure. It should be noted that the embodiments of the present disclosure do not limit the specific structure and arrangement of, for example, the heat dissipation layer 122, the protective layer 123, or other functional layers.

[0069] It should be noted that the embodiment of the present disclosure only describes a part of the structure of the display panel 10 , and the display panel 10 provided by the embodiment of the present disclosure may also include other required structures or devices, which are not limited by the embodiment of the present disclosure.

[0070] For example, in Figure 1A and Figure 1C In some embodiments of the present disclosure shown, the display panel 10 and the display panel 20 may be an organic light emitting diode display panel or a quantum dot light emitting diode display panel, or may be other types of flexible panels with display functions, which is not limited by the embodiments of the present disclosure.

[0071] For example, the display panel 10 and the display panel 20 may be any product or component with a display function, such as electronic paper, OLED panel, QLED panel, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, etc., and the embodiments of the present disclosure are not limited to this.

[0072] At least one embodiment of the present disclosure also provides a jig for a display panel, which includes a carrier. The carrier includes a concave loading surface and a support surface located at least on one side of the loading surface; the display substrate of the display panel includes a display portion and a bent portion located at at least one side of the display portion, the display portion includes a main display portion and a curved display portion located at at least one side of the main display portion, and the curved display portion is connected to the main display portion and the bent portion, respectively. The loading surface of the carrier is used to accommodate the display portion of the display panel, the loading surface includes a first main surface and a second curved concave surface located at at least one side of the first main surface, the first main surface is used to accommodate the main display portion of the display panel, the second curved concave surface is used to accommodate the curved display portion of the display panel, the support surface is used to support the bent portion of the display panel, the support surface is connected to the side of the second curved concave surface away from the first main surface and is located on the side of the second curved concave surface away from the first main surface.

[0073] In the jig for display panels provided in at least one embodiment of the present disclosure, by performing pitting and grooving processing on the carrier of the jig, for example, the carrier surface of the carrier includes a first main body surface and a second curved concave surface, so that the carrier surface is matched with the shape contour of the display panel, for example, the second curved concave surface is matched with the arc-shaped edge of the display panel, so that the display part of the display panel can be stably accommodated in the carrier. Thus, for example, in the preparation process of the display panel, the display substrate of the display panel can be stably placed on the carrier, so that the carrier can provide stable support and fixation for the display substrate, thereby avoiding or reducing the movement or dislocation of the display substrate during the process, thereby improving the stability and accuracy of the preparation process of the display panel and improving the preparation yield of the display panel.

[0074] For example, when the jig provided in the above embodiment of the present disclosure is used to bend a display substrate to be bent, the loading surface of the stage can provide stable support for the display portion of the display substrate, and the supporting surface of the stage can provide stable support for the bent portion of the display substrate, thereby effectively avoiding or reducing the position movement or dislocation of the display substrate during the bending process, thereby improving the bending effect of the display substrate and enhancing the bending accuracy and stability of the display substrate. As a result, the stability and accuracy of the display panel manufacturing process can be significantly improved, thereby optimizing the display panel manufacturing process and improving the display panel manufacturing yield.

[0075] Figure 2 A schematic diagram of a structure of a platform of a fixture for display panels provided in some embodiments of the present disclosure. Figure 2 As shown, the carrier 200 includes a concave loading surface 210 and a support surface 220 located on at least one side of the loading surface 210 .

[0076] For example, the object-carrying surface 210 may be used to accommodate the display portion of the display panel, such as Figure 1A The display portion 120 of the display panel 10 shown in FIG. 2 is a display portion 120 of the display panel 10. The object-carrying surface 210 includes a first main body surface 211 and a second curved concave surface 212 located at at least one side of the first main body surface 211. The first main body surface 211 is used to accommodate the main display portion, for example, it can be used to accommodate Figure 1A The main display portion 140 of the display panel 10 shown in FIG. 1 is a main display portion 140 of the display panel 10; the second curved concave surface 212 is used to accommodate the curved display portion, for example, it can be used to accommodate Figure 1A The curved display portion 150 of the display panel 10 is shown. Thus, the carrier 200 can stably accommodate the display portion of the display substrate in the carrier 200 through the concave design of the loading surface 210, so that the carrier 200 can provide stable support to the display portion of the display substrate during the processing or preparation of the display panel, thereby providing a stable processing environment for the display panel.

[0077] For example, the support surface 220 is used to support the bent portion of the display panel to be bent to the back side of the display portion, for example, it can be used to support Figure 1A The bent portion 130 of the display panel 10 is shown. The support surface 220 is connected to the side of the second curved concave surface 212 away from the first main body surface 211 and is located on the side of the second curved concave surface 212 away from the first main body surface 211. Therefore, during the preparation or processing of the display panel, the support surface 220 can provide stable support for the bent portion of the display substrate, thereby providing a stable processing environment for the display panel.

[0078] In addition, in the process of manufacturing a display panel using the jig provided by the embodiment of the present disclosure, for example, when the display substrate of the display panel is bent, the support surface 220 can keep the bent portion of the display substrate in a stable horizontal state, thereby making it possible to connect the bent portion, for example, a circuit board (for example, Figure 1A The first circuit board 160 and the flexible circuit board 170 shown in FIG. 1 are also maintained on a stable horizontal plane, so that the circuit board can be accurately picked up by, for example, a fixture to facilitate subsequent operations such as bending.

[0079] It should be noted that in Figure 2 In the carrier 200 shown, the carrier 200 includes support surfaces 220 located on both sides of the loading surface 210, and the loading surface 210 includes second curved concave surfaces 212 located on both sides of the first main body surface 211. In some other embodiments of the present disclosure, the carrier in the fixture can also be designed as other suitable structures according to different actual needs, such as according to the shape profile or process requirements of the prepared display panel, and the embodiments of the present disclosure are not limited to this.

[0080] For example, Figure 2As shown, a plurality of first adsorption holes 230 are provided on the loading surface 210 of the loading platform 200. The plurality of first adsorption holes 230 are used to adsorb the display portion of the display panel onto the loading surface 210. For example, the first adsorption holes 230 can be used to adsorb the display portion of the display panel onto the loading surface 210. Figure 1A The display portion 120 of the display panel 10 shown is adsorbed on the loading surface 210, and when the display panel is processed using a jig including the loading platform 200, the display portion of the display panel can be firmly fixed on the loading surface 210, thereby providing a stable processing environment for the display panel, improving the precision and accuracy of the display panel preparation process, and further improving the yield of the prepared display panel.

[0081] For example, in some embodiments of the present disclosure, an air suction channel may be further provided in the carrier 200, and the air suction channel is communicated with the plurality of first adsorption holes 230. For example, one side of the air suction channel is communicated with the first adsorption holes 230, and the other side of the air suction channel is communicated with an air extractor (e.g., an air pump), so that the first adsorption holes 230 can produce an adsorption effect, so that the display portion of the display substrate can be firmly fixed on the loading surface 210 of the carrier 200. It should be noted that, in some other embodiments of the present disclosure, the first adsorption holes 230 may also produce an adsorption effect in other ways, and the embodiments of the present disclosure are not limited thereto.

[0082] It should be noted that the embodiment of the present disclosure does not limit the number of the first adsorption holes 230, as long as the display portion of the display panel can be stably adsorbed on the object-carrying surface 210 of the carrier 200. For example, since the second curved concave surface 212 is a curved surface design, in order to ensure that the curved display portion of the display panel can be stably adsorbed on the second curved concave surface 212, the density of the first adsorption holes 230 opened on the second curved concave surface 212 can be slightly greater than the density of the first adsorption holes 230 opened on the first main body surface 211, and the embodiment of the present disclosure does not limit this.

[0083] Figure 3 A schematic structural diagram of another carrier of a jig for display panels provided in some embodiments of the present disclosure.

[0084] For example, Figure 3 As shown, the carrier 300 includes a main body 340 and a loading part 350 located on the main body 340. The loading part 350 includes a loading surface 310 and a support surface 320. The loading surface 310 includes a first main body surface 311 and second curved concave surfaces 312 located on both sides of the first main body surface 311. A plurality of second adsorption holes 360 are provided on the surface of the main body 340 facing the loading part 350. The plurality of second adsorption holes 360 are used to adsorb the loading part 350 on the main body 340. It should be noted that Figure 3 The loading surface 310 and the supporting surface 320 of the loading platform 300 are shown in FIG. Figure 2 The object loading surface 210 and the support surface 220 of the loading platform 200 are substantially the same and will not be described in detail herein.

[0085] For example, when a display panel is prepared or processed using a jig including the stage 300, according to the different shapes and contours of the display panel, only the object-carrying surface 310 of the object-carrying part 350 of the stage 300 needs to be processed so that the object-carrying surface 310 matches the shape and contour of the corresponding display panel, without changing the structure of the main body 340. Thus, the main body 340 of the stage 300 can be reused, thereby reducing the preparation cost of the stage 300, and further reducing the preparation cost of the jig including the stage 300, so that the jig can be used on a large scale.

[0086] For example, some embodiments of the present disclosure provide a jig further comprising a clamp for picking up a circuit board for a display panel, and the clamp is configured to be movable from a side of the support surface away from the object-carrying surface to the first main surface of the carrier, for example, from a lateral side of the carrier to a longitudinal side of the carrier. Figure 1A When the display panel 10 is shown, the first circuit board 160 of the display panel 10 can be picked up by a fixture, and then the first circuit board 160 is installed to the back side of the display part 120, for example, to the back side of the main display part 140.

[0087] For example, some embodiments of the present disclosure provide a jig further comprising a pressing portion, wherein the pressing portion is configured to be able to approach the object-carrying surface in a direction perpendicular to the first main body surface of the carrier to perform a pressing operation. Figure 1A When the display panel 10 is shown, the pressing part can be used to approach the loading surface in a direction perpendicular to the first main body surface of the loading platform and contact the bent portion 130, and then the curved display part 150, the supporting part 110 and the bent portion 130 are pressed together by the pressing part.

[0088] It should be noted that the fixture provided in the embodiments of the present disclosure may also include other components or functional parts, etc., and the embodiments of the present disclosure are not limited to this.

[0089] The following uses the jig provided in the embodiment of the present disclosure for preparing a display panel as an example to illustrate the specific method of using the jig provided in the embodiment of the present disclosure.

[0090] At least one embodiment of the present disclosure also provides a method for preparing a display panel using the jig described in any embodiment of the present disclosure, comprising: placing a display substrate to be bent on a carrier, wherein the display substrate to be bent includes a display portion and a bending portion located on at least one side of the display portion, the display portion includes a main display portion and a curved display portion located on at least one side of the main display portion, the curved display portion is respectively connected to the main display portion and the bending portion, the display portion of the display substrate to be bent is located on a carrier surface, the main display portion of the display portion is in contact with a first main surface, the curved display portion of the display portion is in contact with a second curved concave surface, and the bent portion of the display substrate to be bent is located on a supporting surface; placing a supporting portion on the display portion of the display substrate to be bent, wherein the supporting portion is in contact with the curved display portion; and bending the bending portion to the top of the display portion and in contact with the supporting portion.

[0091] Figure 4 A flowchart of a method for preparing a display panel using a jig provided in some embodiments of the present disclosure is provided. For example, the preparation method includes the following steps.

[0092] Step S10: placing the display substrate to be bent on a carrier.

[0093] Step S20: placing the support portion on the display portion of the display substrate to be bent.

[0094] Step S30: bending the bent portion to above the display portion and contacting the support portion.

[0095] Combine the following Figures 5A-5F , to utilize, including Figure 2 The fixture preparation of the carrier 200 shown is as follows Figure 1A Taking the display panel 10 shown as an example, the manufacturing method of the display panel provided by the embodiment of the present disclosure is described. For example, the manufacturing method includes the following steps.

[0096] Step S110 : placing the display substrate to be bent on the stage 200 .

[0097] For example, Figure 5A As shown, the display portion 120 of the display substrate to be bent is located on the loading surface 210, the main display portion 140 of the display portion 120 contacts the first main surface 211, and the curved display portion 150 of the display portion 120 contacts the second curved concave surface 212. The bent portion 130 of the display substrate to be bent is located on the supporting surface 220.

[0098] Step S120: providing a first circuit board 160, and connecting the first circuit board 160 to the bending portion 130 of the display substrate to be bent through the flexible circuit board 170.

[0099] For example, Figure 5B As shown, the contact pads of the flexible circuit board 170 are respectively bound with the contact pads of the first circuit board 160 and the contact pads of the bending portion 130 by, for example, anisotropic conductive adhesive to establish electrical connection, thereby connecting the first circuit board 160 to the bending portion 130 of the display substrate to be bent through the flexible circuit board 170. It should be noted that when the bending portion 130, the flexible circuit board 170 and the first circuit board 160 are connected to each other, the flexible circuit board 170 can be located above the bending portion 130, and the first circuit board 160 can be located above the flexible circuit board 170; or, the flexible circuit board 170 can be located above the bending portion 130, and the first circuit board 160 can be located below the flexible circuit board 170. The embodiments of the present disclosure do not limit the specific connection method.

[0100] For example, combined with Figure 5B and Fig. 6A As shown, the display portion 120, the bending portion 130, the flexible circuit board 170 and the first circuit board 160 are electrically connected to each other, and the driving chip 180 of the flexible circuit board 170 can provide a driving signal for display, for example, to drive the display portion 120 to perform corresponding display operations, thereby enabling the display panel 10 to realize the display function.

[0101] Step S130: placing the support portion 110 on the display portion 120 of the display substrate to be bent.

[0102] For example, combined with Figure 5C and Figure 6B As shown, the support portion 110 is placed on the display portion 120 of the display substrate to be bent, and the support portion 110 is in contact with the curved display portion 150. Thus, after the bending portion 130 is bent above the display portion 120 of the display substrate, the bending portion 130 can be in contact with the support portion 110.

[0103] Step S140: Pick up the first circuit board 160 with the clamp 410, and make the clamp 410 drive the first circuit board 160 to move from the side of the support surface 220 away from the loading surface 210 to the first main surface 211 of the carrier 200, for example, from the lateral side of the carrier 200 to the longitudinal side of the carrier 200, so as to bend the bending portion 130 to the top of the display portion 120 through the flexible circuit board 170.

[0104] For example, combined with Figure 5D and Figure 5EAs shown, the clamp 410 can drive the first circuit board 160 to move along the curve R1 from the side of the support surface 220 away from the loading surface 210 to the first main surface 211 of the platform 200, for example, from the lateral side of the platform 200 to the longitudinal side of the platform 200, so as to bend the bending portion 130 to the back side of the display portion 120.

[0105] For example, Figure 5E As shown, the bent portion 130 may be bent along an edge of the support portion 110 to contact the support portion 110 .

[0106] For example, Figure 5E As shown, when the side of the support portion 110 that contacts the bending portion 130 is flat, the flexible circuit board 170 can be bent along the edge of the support portion 110 away from the curved display portion 150 so that the first circuit board 160 is attached to the back side of the main display portion 140.

[0107] Step S150 : placing the pressing portion 420 on the bent portion 130 , and making the pressing portion 420 close to the loading surface 210 .

[0108] For example, Fig. 5F As shown, the pressing portion 420 approaches the loading surface 210 along the direction of the straight line R2 to press the bending portion 130, the supporting portion 110 and the curved display portion 150, thereby making the bending portion 130, the supporting portion 110 and the curved display portion 150 fit better, so that the supporting portion 110 provides more stable support for the bending portion 130 and the curved display portion 150.

[0109] The method for preparing a display panel provided in the embodiment of the present disclosure can provide stable support for the display substrate when the display substrate is bent, and enable the display substrate to be bent according to a predetermined bending angle, thereby improving the bending effect of the display substrate, and improving the accuracy and stability of the display panel preparation process, thereby improving the yield of the prepared display panel.

[0110] There are a few points to note:

[0111] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.

[0112] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions is exaggerated or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element, or there may be intermediate elements.

[0113] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0114] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display panel, comprising a display substrate and a support portion, in, The display substrate includes a display portion and a bending portion located at at least one side of the display portion. The display portion includes a main body display portion and a curved surface display portion located at at least one side of the main body display portion, wherein the curved surface display portion is connected to the main body display portion and the bent portion respectively. The bent portion is bent and located at the back side of the display portion opposite to the display side of the display panel, and a receiving space is formed between the bent portion and the curved display portion; The support portion is at least partially located in the accommodation space between the bending portion and the curved display portion, and is in contact with the bending portion and the curved display portion respectively; The side of the support portion contacting the bent portion is a plane and parallel to the main display portion.

2. The display panel according to claim 1, wherein: The side of the support portion in contact with the curved display portion is a curved surface having the same shape profile as that of the side of the curved display portion facing the support portion.

3. The display panel according to claim 1 or 2, wherein: A portion of the support portion in contact with the bent portion and a portion of the support portion in contact with the curved display portion are both adhesive.

4. The display panel according to claim 3, wherein: The viscosity of a portion where the supporting portion contacts the bent portion and a portion where the supporting portion contacts the curved display portion is not less than 2000 gf / inch.

5. The display panel according to claim 3, wherein: The supporting portion includes an adhesive material to form at least an adhesive portion in contact with the bent portion and an adhesive portion in contact with the curved display portion.

6. The display panel according to claim 1 or 2, wherein: The support portion is also in contact with the main display portion.

7. The display panel according to claim 1 or 2, further comprising a first circuit board, in, The first circuit board is located at a back side of the main display portion opposite to a display side of the display panel, and is configured to be electrically connected to the bent portion.

8. The display panel according to claim 7, further comprising a flexible circuit board, in, The flexible circuit board is located between the first circuit board and the bending portion, and is configured to electrically connect the first circuit board and the bending portion.

9. The display panel according to claim 8, wherein: The flexible circuit board is bent along an edge of the side of the support portion contacting the bent portion away from the curved display portion, so that the first circuit board is located at the back side of the main body display portion.

10. The display panel according to claim 1 or 2, wherein: The display panel is an organic light emitting diode display panel or a quantum dot light emitting diode display panel.

11. The display panel according to claim 1 or 2, wherein: A size of the support portion in a direction perpendicular to the main body display portion is the same as a size of the curved display portion in a direction perpendicular to the main body display portion.

Images