TWI698958B - Method for separating flexible display from substrate - Google Patents

Abstract

The present invention relates to a method for separating a flexible display from a substrate. The substrate combined with the flexible display is placed on a fixed seat, and the air knife of the blower table is inserted between the substrate and the flexible display, and then the pressing component is directed toward Press down on the surface of the flexible display, and blow air between the substrate and the flexible display through the air knife of the hair dryer, so that the flexible display is completely separated from the substrate, because the substrate and the flexible display are between the substrate and the flexible display. The air knife is used to blow air, and the flexible display can be separated from the substrate in a non-tension manner, thereby reducing the release force when the flexible display is peeled off, thereby avoiding the flexible display from curling and maintaining good flatness And because the peeling force of the flexible display is reduced, at least one electronic component on the flexible display can be prevented from being damaged due to bending, thereby improving the overall manufacturing yield and meeting the requirements of automated manufacturing processes.

Description

Method for separating flexible display from substrate

The present invention provides a method for separating a flexible display from a substrate, in particular, the air knife of a hair dryer is used to blow air between the substrate and the flexible display, so that the flexible display is separated from the substrate in a tensionless manner, thereby reducing the flexible display The release force during peeling prevents the flexible display from curling, thereby maintaining good flatness.

According to the current era of Internet of things (IoT) and Industry 4.0 (Industry 4.0), the number and applications of connected devices have increased significantly, and the communication and interaction between these connected devices are mostly It is automatically carried out without human intervention, so more and more equipment will need to automatically cooperate with each other to complete a specific overall manufacturing process under unmanned operation. However, under unmanned automatic operation, every The yield and accuracy of a workstation are very important, so that the low yield and accuracy will not affect the smoothness of the operation, or even stoppages, which will delay the overall manufacturing process.

Furthermore, due to the continuous R&D and improvement of the technology of LCD and touch panel manufacturing, the new generation of product applications are designed to be lighter, thinner, energy-saving, flexible, or larger in size. However, generally Flexible panels (such as: OLED or liquid crystal display, etc.) in the automated process of removing from the substrate, mainly through the mechanical removal process ( Mechanical Lift-Off (MLO), Laser Lift-Off (LLO), or LLO with temporary adhesives (LLO with temporary adhesives), due to the mechanical lift-off process in terms of equipment cost and process simplicity The above has obvious advantages, so the process of removing the flexible panel from the substrate mostly uses a mechanical removal process.

However, because the mechanical removal process uses mechanical peeling to remove the flexible panel from the substrate, the film of the flexible panel is prone to curling deformation due to excessive release force, and it is also easy to damage the film The electronic components on the board will affect the manufacturing yield. Therefore, the successful process of mechanical removal needs to consider whether the film can maintain flatness and low deformation, and avoid damage to the electronic components, so that the removal of the flexible panel can maintain a high yield and be used for subsequent automation. Process.

Therefore, how to solve the above-mentioned shortcomings and inconveniences of conventional use is the direction that the relevant industry urgently wants to study and improve.

Therefore, in view of the above-mentioned deficiencies, the inventor collected relevant information, and through multiple evaluations and considerations, he was the inventor who designed this method of separating the flexible display from the substrate.

The main purpose of the present invention is to lay the substrate with the flexible display flat on the fixing seat, and extend the air knife of the blower table between the substrate and the flexible display film, and then press the pressing component downwards On the surface of the flexible display, the air knife of the hair dryer is used to blow between the substrate and the flexible display, so that the flexible display is blown by the wind to cause the phenomenon of floating, so that the film of the flexible display can be completely separated from the substrate. Because the air knife of the hair dryer is used to blow air between the substrate and the flexible display, the flexible display can pass through It is separated from the substrate by pulling force to reduce the release force when the flexible display is peeled off, thereby avoiding the curling deformation of the flexible display, thereby maintaining good flatness, and reducing the peeling force of the flexible display, which can also prevent At least one electronic component on the flexible display is bent and damaged, thereby improving the overall manufacturing yield, thereby achieving the goal of meeting the requirements of automated manufacturing processes.

The secondary purpose of the present invention is to separate the substrate and the flexible display by blowing air with the air knife of the hair dryer, so that the flexible display can be kept dry, so as to facilitate the use of subsequent processes, and thus achieve the purpose of meeting the requirements of automated processes. .

1‧‧‧Substrate

2‧‧‧Flexible display

21‧‧‧Film

22‧‧‧Electronic components

3‧‧‧Fixed seat

4‧‧‧Hair dryer

41‧‧‧Wind Knife

5‧‧‧Compression component

51‧‧‧Limiting plate

52‧‧‧Side pressure plate

The first figure is a block diagram of the present invention.

The second figure is a perspective view of the substrate and the flexible display of the present invention.

The third figure is a schematic diagram of the substrate and the flexible display of the present invention placed in front of the fixing base.

The fourth figure is a schematic diagram of the air knife of the hair dryer station of the present invention extending between the substrate and the flexible display.

The fifth figure is a schematic diagram of the pressing component of the present invention when pressing.

The sixth figure is a partial schematic diagram of the air knife of the hair dryer table of the present invention when blowing air.

The seventh figure is a partial schematic diagram of the flexible display of the present invention when it is separated from the substrate.

Please refer to Figures 1, 2, 3, 4, 5, 6, and 7, which are the block diagram of the present invention, the three-dimensional appearance diagram of the substrate and the flexible display, the schematic diagram of the substrate and the flexible display placed in front of the fixing base, Schematic diagram of the air knife of the hair dryer extending between the substrate and the flexible display , The schematic diagram of the pressure component when it is pressed, the partial schematic diagram of the air knife of the hair dryer when blowing air, and the partial schematic diagram of the flexible display when it is separated from the substrate. It can be clearly seen from the figure that the substrate 1 of the present invention is combined with When the flexible display 2 is separated from the substrate 1, the following steps are included:

(A) The substrate 1 combined with the flexible display 2 can be placed on the fixing base 3 first.

(B) Extend the air knife 41 of the blower table 4 between the substrate 1 and the flexible display 2.

(C) Then the pressing component 5 is pressed down against at least one side of the surface of the flexible display 2.

(D) The air knife 41 of the blower table 4 blows air between the substrate 1 and the flexible display 2 so that the flexible display 2 is completely separated from the substrate 1 to complete the steps of the present invention.

The above-mentioned substrate 1 can be made of glass, organic light emitting diode panel (OLED), touch panel (TSP), polymethacrylate (PMMA) or acrylic board, etc., which can be combined with flexible display 2 .

Furthermore, the above-mentioned flexible display 2 includes a film 21 bonded on the substrate 1, and at least one electronic component 22 is bonded on the film 21, wherein the film 21 may preferably be Polyimide (PI), but In practical applications, it can also be polyethylene terephthalate (PET or PETE), polyethylene (PE) or polyolefin (Polyolefin, PO) and other films, and the electronic component 22 can be a wire, a dielectric layer, a liquid crystal or a multilayer electronic component, etc., which can be used to drive the organic light emitting diode, touch panel, and film sensor formed on the film 21 , Organic electroluminescence (Electroluminescence, EL) display or liquid crystal display and other circuit components.

Moreover, how the above-mentioned hair dryer station 4 obtains electric energy to perform actions is a conventional technical category, and there are many devices and detailed components inside the hair dryer station 4, which are not the focus of the present invention, so we will not repeat them in detail for understanding.

In addition, the above-mentioned hair dryer station 4 can preferably use its own conveying device (not shown in the figure) to drive the air knife 41 to be inserted between the substrate 1 and the flexible display 2, but in practical applications, it can also be used The fixed seat 3 is equipped with a conveyor table (not shown in the figure), and the conveyor table can be used to drive the displacement of the substrate 1 and the flexible display 2 so that the air knife 41 of the blower table 4 can be inserted into the substrate 1 and Between the flexible displays 2, there are many ways to insert the air knife 41 of the blower table 4 between the substrate 1 and the flexible display 2, so any structure that can achieve the aforementioned effects should be covered by the present invention. Simple modifications and equivalent structural changes shall be included in the scope of the patent of the present invention for the same reason, and shall be stated.

However, the above-mentioned substrate 1 incorporating the flexible display 2 can be pre-separated on at least one side of the flexible display 2 (such as a laser pre-separation process) before step (A), so that at least one of the flexible displays 2 The side is separated from the substrate 1 so that the air knife 41 of the blower table 4 can be smoothly inserted between the substrate 1 and the flexible display 2.

In addition, the center of the pressing component 5 in the above step (C) is provided with a limiting plate 51 pressing on the surface of the flexible display 2, and at least one side of the limiting plate 51 is provided with a limiting plate 51 Press the side pressure plate 52 at the side of the surface of the flexible display 2, and when the air knife 41 of the blower table 4 blows air in step (D), it can pass through the limit plate 51 and at least one side pressure plate 52 of the pressure component 5 In order to prevent the flexible display 2 from curling; as for the side pressing plate 52 of the pressing component 5, it is preferable to press against the four side surfaces of the flexible display 2, but in practical applications, it can only press against one The side pressure plate 52 on the side, two sides or three sides, and the pressure component 5 is adjacent to the air knife 41 side, can be made of silicone, sponge, rubber or other soft materials, so that the side pressure plate 52 is pressed against the soft When the side of the surface of the display 2 is deformed according to the shape of the air knife 41, it can be reliably pressed against the side of the surface of the flexible display 2.

When the present invention is actually used, the substrate 1 combined with the flexible display 2 can be laid flat on the fixing base 3, and the air knife 41 of the blower table 4 can be inserted into the substrate 1 and the film 21 of the flexible display 2 Then, the pressing component 5 is pressed down against the surface of the flexible display 2. At this time, the limiting plate 51 of the pressing component 5 will press against the center of the surface of the flexible display 2, and the pressing component 5 The at least one side pressing plate 52 is pressed against the side of the surface of the flexible display 2, and then the air knife 41 of the blower table 4 is used to blow air between the substrate 1 and the flexible display 2, so that the flexible display 2 is blown by the wind. The phenomenon of floating occurs, so that the film 21 of the flexible display 2 can be completely separated from the substrate 1, thereby completing the use of the present invention.

The present invention has the following advantages:

(1) Between the substrate 1 and the flexible display 2, the air knife 41 of the blower table 4 is used for blowing, so that the flexible display 2 can be separated from the substrate 1 in a non-tension manner, thereby reducing the peeling of the flexible display 2 The release force of the flexible display 2 can be prevented from curling and deformation, thereby maintaining good flatness, and the peeling force of the flexible display 2 is reduced, which can also prevent at least one electronic component 22 on the flexible display 2 from being affected Bent while Damage occurs, thereby improving the overall manufacturing yield and meeting the needs of automated manufacturing processes.

(2) The substrate 1 and the flexible display 2 are separated by blowing air through the air knife 41 of the blower table 4, so that the flexible display 2 can be kept dry to facilitate subsequent process use, thereby meeting the needs of automated manufacturing.

The above is only a preferred embodiment of the method for separating the flexible display from the substrate of the present invention, and it does not limit the scope of the patent of the present invention. Therefore, all simple modifications and equivalent structural changes made by using the description and drawings of the present invention , Should be included in the scope of the patent of the present invention for the same reason, and should be stated.

To sum up, the method of separating the flexible display from the substrate of the present invention can indeed achieve its effects and purposes when used. Therefore, the present invention is truly an invention with excellent practicability. In order to meet the requirements of an invention patent, it is proposed according to law. For the application, I hope that the review committee will grant this case as soon as possible to protect the inventor’s hard work. If the review committee of the Bureau has any doubts, please send us instructions and the inventor will do our best to cooperate with you.

Claims (6)

A method for separating a flexible display from a substrate, the substrate is combined with a flexible display, and when the flexible display is separated from the substrate, a pre-separation process is performed on at least one side of the flexible display to separate at least one side of the flexible display The substrate includes the following steps: (A) first place the substrate with the flexible display on the fixing seat; (B) extend the air knife of the blower table between the substrate and the flexible display; (C) ) Then the pressing component is pressed down against at least one side of the surface of the flexible display; (D) The air knife of the hair dryer blows air between the substrate and the flexible display, so that the flexible display is completely separated from the substrate. The method for separating a flexible display from a substrate as described in the first item of the scope of patent application, wherein the substrate is glass, organic light emitting diode panel, touch panel, polymethacrylate or acrylic plate. The method for separating a flexible display from a substrate as described in the first item of the patent application, wherein the flexible display includes a thin film bonded to the substrate, and at least one electronic component is combined on the thin film. The method for separating a flexible display from a substrate as described in item 3 of the patent application, wherein the film is polyimide, polyethylene terephthalate, polyethylene or polyolefin, and the electronic component is a wire, a dielectric Electrical layer, liquid crystal or multilayer electronic components. The method for separating the flexible display from the substrate as described in item 1 of the scope of the patent application, wherein the center of the pressing component is provided with a limiting plate that is pressed against the surface of the flexible display, and is provided on at least one side of the limiting plate There are side pressing plates that press against the sides of the flexible display surface. The method for separating the flexible display from the substrate as described in item 5 of the scope of patent application, wherein the material of the side pressing plate of the pressing component is silicone, sponge or rubber.

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