The present disclosure relates to a display device, and in particular to a display device with an active matrix organic light emitting diode.
Organic light emitting diode (OLED) displays are self-luminous displays. According to the driving method, they can be divided into passive matrix driving organic light emitting diode (PMOLED) displays and active matrix driving organic light emitting diode (AMOLED) displays. AMOLED displays have advantages, such as low manufacturing cost, fast response times, power savings, DC drive for portable devices, and a wide operating temperature range. Therefore, more and more AMOLED displays are used in a variety of displays with high performance.
Further, in the display device of the AMOLED display, a first flexible substrate layer, a buffer layer and a second flexible substrate layer are disposed on a glass substrate. Then the glass substrate peeled by laser, and a back plane is attached, wherein the first flexible substrate layer and the second flexible substrate layer can be an organic polyimide film, and the buffer layer is an inorganic layer (SiOx).
However, for display devices with a two-layer organic polyimide film, the adhesion ability of the organic polyimide film to the inorganic layer is limited. A neutral axis of a bending region of the display device is disposed on a metal axis layer that is susceptible to bending. Therefore, separation of the organic polyimide film from the inorganic layer is apt to occur at a starting position, an intermediate position, and an ending position of the bending region.
As a result, it is necessary to provide a display device and a manufacturing method of the display device to solve the problems existing in the conventional technologies, as described above.
An object of the present disclosure is to provide a display device and a manufacturing method thereof, wherein a risk of a first flexible substrate layer and a second flexible substrate layer being separated from a buffer layer is reduced by forming the pattern in a bending region of the buffer layer.
To achieve the above objects, the present disclosure provides a display device, and the display device comprises a first flexible substrate layer, at least one buffer layer, and a second flexible substrate layer. The second flexible substrate layer is formed on the buffer layer, and the buffer layer is formed on the first flexible substrate layer; a bending region of the buffer layer is formed with a patterned pattern such that the first flexible substrate layer is attached to the second flexible substrate layer through the pattern, and a material of the first flexible substrate layer and the second flexible substrate layer is polyimide.
In one embodiment of the present disclosure, the pattern is formed with a plurality of holes.
In one embodiment of the present disclosure, the holes are circular, vertical elliptical, transversely elliptical, square, equilateral, or inverted triangles.
In one embodiment of the present disclosure, the bending region of the buffer layer includes two corresponding sides, and a diameter of the hole located at two corresponding sides of the bending region is greater than a diameter of the hole located at a middle of the bending region.
In one embodiment of the present disclosure, the display device further includes a first back plane and a second back plane, and the first flexible substrate layer is disposed on the first back plane and the second back plane; a bending space is formed between the first back plane and the second back plane, and the bending region of the buffer layer corresponds to the bending space.
In one embodiment of the present disclosure, an inner surface of the second flexible substrate layer is attached to an outer surface of the buffer layer, an inner surface of the buffer layer is attached to an outer surface of the first flexible substrate layer, and the first back plane and the second back plane are attached to an inner surface of the first flexible substrate layer.
In one embodiment of the present disclosure, the display device further includes a panel, and an inner surface of the panel is attached to an outer surface of the second flexible substrate layer.
In one embodiment of the present disclosure, the display device further includes a stiffener, and the stiffener is disposed between the first back plane and the second back plane.
To achieve the above objects, the present disclosure provides a manufacturing method of a display device, and the manufacturing method comprises a first flexible substrate layer forming step, a buffer layer forming step, a second flexible substrate layer forming step, and a bending step. The first flexible substrate layer forming step is to form a first flexible substrate layer; the buffer layer forming step is to forme a buffer layer on the first flexible substrate later, wherein a bending region of the buffer layer is formed with a patterned pattern; the second flexible substrate layer forming step is to form a second flexible substrate layer on the buffer layer; the bending step is to bend the bending region of the buffer layer such that the first flexible substrate layer is attached to the second flexible substrate layer through the pattern.
In one embodiment of the present disclosure, in the buffer layer forming step, the pattern is formed with a plurality of holes, and the holes are circular, vertical elliptical, transversely elliptical, square, equilateral, or inverted triangles.
To achieve the above objects, the present disclosure provides a display device, and the display device comprises a first flexible substrate layer, at least one buffer layer, and a second flexible substrate layer. The the second flexible substrate layer is formed on the buffer layer, and the buffer layer is formed on the first flexible substrate layer; a bending region of the buffer layer is formed with a patterned pattern such that the first flexible substrate layer is attached to the second flexible substrate layer through the pattern.
In one embodiment of the present disclosure, the pattern is formed with a plurality of holes.
In one embodiment of the present disclosure, the holes are circular, vertical elliptical, transversely elliptical, square, equilateral, or inverted triangles.
In one embodiment of the present disclosure, the bending region of the buffer layer includes two corresponding sides, and a diameter of the hole located at two corresponding sides of the bending region is greater than a diameter of the hole located at a middle of the bending region.
In one embodiment of the present disclosure, the display device further includes a first back plane and a second back plane, and the first flexible substrate layer is disposed on the first back plane and the second back plane; a bending space is formed between the first back plane and the second back plane, and the bending region of the buffer layer corresponds to the bending space.
In one embodiment of the present disclosure, an inner surface of the second flexible substrate layer is attached to an outer surface of the buffer layer, an inner surface of the buffer layer is attached to an outer surface of the first flexible substrate layer, and the first back plane and the second back plane are attached to an inner surface of the first flexible substrate layer.
In one embodiment of the present disclosure, the display device further includes a panel, and an inner surface of the panel is attached to an outer surface of the second flexible substrate layer.
In one embodiment of the present disclosure, the display device further includes a stiffener, and the stiffener is disposed between the first back plane and the second back plane.
As described above, forming the pattern in the buffer layer, the first flexible substrate layer is attached to the second flexible substrate layer through the pattern. The contact area between the first flexible substrate layer and the second flexible substrate layer can be increased. In the bending process of the display device, the risk of the first flexible substrate layer and the second flexible substrate layer being separated from the buffer layer is reduced.
In order to more clearly illustrate the embodiments or prior art technical solutions embodiment of the present disclosure, will implement the following figures for the cases described in prior art or require the use of a simple introduction. Obviously, the following description of the drawings are only some of those of ordinary skill in terms of creative effort without precondition, you can also obtain other drawings based on these drawings embodiments of the present disclosure.
Structure and technical means adopted by the present disclosure to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings. Furthermore, directional terms described by the present disclosure, such as upper, lower, front, back, left, right, inner, outer, side, longitudinal/vertical, transverse/horizontal, etc., are only directions by referring to the accompanying drawings, and thus the used directional terms are used to describe and understand the present disclosure, but the present disclosure is not limited thereto.
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As described above, forming a plurality of holes 30 of the pattern in the buffer layer 3, the first flexible substrate layer 2 is attached to the second flexible substrate layer 4 through the pattern. The contact area between the first flexible substrate layer 2 and the second flexible substrate layer 4 can be increased. Simultaneously, reducing the contact area of the first flexible substrate layer 2 and the buffer layer 3 and the contact area of the second flexible substrate layer 4 and the buffer layer 3. In the bending process of the display device, the risk of the first flexible substrate layer 2 and the second flexible substrate layer 4 being separated from the buffer layer 3 is reduced. In addition, in the bending process, the design of the hole 30 with the diameter A and the hole 30 with the diameter B can further improve the reliability of the bending region 31 when bending.
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As described above, forming a plurality of holes 30 of the pattern in the buffer layer 3, the first flexible substrate layer 2 is attached to the second flexible substrate layer 4 through the pattern. The contact area between the first flexible substrate layer 2 and the second flexible substrate layer 4 can be increased. Simultaneously, reducing the contact area of the first flexible substrate layer 2 and the buffer layer 3 and the contact area of the second flexible substrate layer 4 and the buffer layer 3. In the bending process of the display device, the risk of the first flexible substrate layer 2 and the second flexible substrate layer 4 being separated from the buffer layer 3 is reduced. In addition, in the bending process, the design of the hole 30 with the diameter A and the hole 30 with the diameter B can further improve the reliability of the bending region 31 when bending.
The present disclosure has been described with preferred embodiments thereof and it is understood that many changes and modifications to the described embodiments can be carried out without departing from the scope and the spirit of the disclosure that is intended to be limited only by the appended claims.
Number | Date | Country | Kind |
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201811534927.8 | Dec 2018 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2019/076146 | 2/26/2019 | WO | 00 |