Quantum dot composite brightness enhancement film production equipment

Abstract

The application discloses a quantum dot composite brightness enhancement film production device, and relates to the technical field of optical film processing. The quantum dot composite brightness enhancement film production device comprises quantum dot film production sections, a first upper prism layer production section and a lower prism layer production section which are sequentially connected; the discharge end of the quantum dot film production section is directly connected to the feeding end of the first upper prism layer production section, and the discharge end of the first upper prism layer production section is directly connected to the feeding end of the lower prism layer production section; the quantum dot film production section is used for producing quantum dot films, and the first upper prism layer production section and the lower prism layer production section are respectively used for forming a first upper prism layer and a lower prism layer on the upper side and the lower side of the quantum dot film to form a quantum dot composite brightness enhancement film. The quantum dot composite brightness enhancement film production device provided by the application can improve production efficiency and reduce processing cost.

Description

Technical Field

[0001] This application relates to the field of optical film processing technology, and in particular to a quantum dot composite brightness enhancement film production equipment. Background Technology

[0002] Currently, LCD monitors dominate the flat panel display market. Among them, the backlight module is an important component of LCD displays. The backlight module is one of the key components of the LCD panel, and its backlight quality determines important parameters such as the brightness, uniformity of emitted light, and color gradation of the LCD screen, and largely determines the light emission effect of the LCD screen. In order to achieve a high color gamut display effect, existing technologies have adopted a solution of using blue LEDs with quantum dot films to achieve a high color gamut backlight. However, in the existing backlight modules, since the module structure is mostly 8 layers, the quantum dot film and the brightness enhancement film are both independent optical films with a large thickness, which does not meet the requirements of thin and light design. Moreover, in the assembly of the module film, the assembly of the quantum dot film, the upper brightness enhancement film and the lower brightness enhancement film requires three film assemblys, which makes the production process too long, makes it difficult to control the yield, and reduces the work efficiency. To address the aforementioned issues, the applicant filed a Chinese patent application entitled "A Quantum Dot Composite Brightness Enhancement Film and Its Preparation Method, and a Backlight Display Device," application number 202211523990.8, filed on November 30, 2022. This patent provides a quantum dot composite brightness enhancement film that reduces the number of optical films during backlight module assembly, thereby reducing the thickness of the backlight display device. However, the existing technology lacks optical film production equipment that can continuously and directly produce the aforementioned quantum dot composite brightness enhancement film using a single production line. Instead, existing equipment is used to indirectly produce the film through a combination of multiple production lines. During the switching between different production lines, after the previous production line is completed, the semi-finished film needs to be wound up and transferred to the next production line before being unloaded for production on the next line. This results in low production efficiency and high production costs. Summary of the Invention

[0003] This application provides a quantum dot composite brightness enhancement film production equipment, which can reduce production difficulty, improve production efficiency, and reduce production costs.

[0004] This application provides:

[0005] A quantum dot composite brightness enhancement film production equipment includes a frame, production components mounted on the frame, and a controller. The controller controls the electrical equipment in the production components. The frame, production components, and controller together form a quantum dot composite brightness enhancement film production line. The production line includes a quantum dot film production section, a first upper prism layer production section, a lower prism layer production section, and a winding section connected in sequence. The discharge end of the quantum dot film production section is directly connected to the feed end of the first upper prism layer production section, and the discharge end of the first upper prism layer production section is directly connected to the feed end of the lower prism layer production section. The quantum dot film production section is used to produce a quantum dot film. The first upper prism layer production section and the lower prism layer production section are used to form a first upper prism layer and a lower prism layer on the upper and lower sides of the quantum dot film, respectively, to form a quantum dot composite brightness enhancement film.

[0006] This application also provides another quantum dot composite brightness enhancement film production equipment, including a frame, production components mounted on the frame, and a controller. The controller is used to control the electrical equipment in the production components. The frame, the production components, and the controller together constitute a quantum dot composite brightness enhancement film production line. The quantum dot composite brightness enhancement film production line includes a quantum dot film production section, a first upper prism layer production section, a lower prism layer production section, a second upper prism layer production section, and a winding section connected in sequence. The discharge end of the quantum dot film production section is directly connected to the first upper prism layer production section. The feed end of the prism layer production section is directly connected to the feed end of the lower prism layer production section, and the feed end of the lower prism layer production section is directly connected to the feed end of the second upper prism layer production section. The quantum dot film production section is used to produce quantum dot films. The first upper prism layer production section and the lower prism layer production section are used to form a first upper prism layer and a lower prism layer on the upper and lower sides of the quantum dot film, respectively. The second upper prism layer production section is used to form a second upper prism layer above the first upper prism layer to form a quantum dot composite brightness enhancement film.

[0007] This application also provides another quantum dot composite brightness enhancement film production equipment, including a frame, production components mounted on the frame, and a controller. The controller is used to control the electrical equipment in the production components. The frame, the production components, and the controller together constitute a quantum dot composite brightness enhancement film production line. The quantum dot composite brightness enhancement film production line includes a quantum dot film production section, a first upper prism layer production section, a second upper prism layer production section, a lower prism layer production section, and a winding section connected in sequence. The discharge end of the quantum dot film production section is directly connected to the first upper prism layer production section. The feed end of the prism layer production section is directly connected to the feed end of the second upper prism layer production section, and the feed end of the second upper prism layer production section is directly connected to the feed end of the lower prism layer production section. The quantum dot film production section is used to produce a quantum dot film. The first upper prism layer production section and the second upper prism layer production section are used to form a first upper prism layer and a second upper prism layer on one side of the quantum dot film. The lower prism layer production section is used to form a lower prism layer on the other side of the quantum dot film to form a quantum dot composite brightness enhancement film.

[0008] The quantum dot composite brightness enhancement film production equipment provided in this application can produce quantum dot composite brightness enhancement films through continuous operation, without the need to rewind the semi-finished film material in the middle and then transfer it to the next production line before feeding it out for production on the next production line. This results in high production efficiency and low production cost. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram showing the sequential connection of the various production sections of a quantum dot composite brightness enhancement film production equipment in one embodiment;

[0011] Figure 2 This is a schematic diagram showing the sequential connection of the production sections of the quantum dot composite brightening film production equipment in another embodiment;

[0012] Figure 3 This is a schematic diagram showing the sequential connection of the production sections of the quantum dot composite brightening film production equipment in another embodiment;

[0013] Figure 4 This is a schematic diagram of the production line of a quantum dot composite brightening film production equipment in one embodiment.

[0014] Figure 5This is a schematic diagram of the quantum dot film production section in a quantum dot composite brightening film production equipment in one embodiment;

[0015] Figure 6 This is a schematic diagram of the first upper prism layer production section in a quantum dot composite brightening film production equipment in one embodiment.

[0016] Figure 7 This is a schematic diagram of the lower prism layer production section in a quantum dot composite brightness enhancement film production equipment in one embodiment;

[0017] Figure 8 This is a schematic diagram of the winding stage in a quantum dot composite brightening film production equipment in one embodiment.

[0018] Figure 9 This is a schematic diagram of the first upper prism layer production section in the quantum dot composite brightness enhancement film production equipment in another embodiment;

[0019] Figure 10 This is a schematic diagram of the lower prism layer production section in the quantum dot composite brightness enhancement film production equipment in another embodiment;

[0020] Figure 11 This is a schematic diagram of the second upper prism layer production section in a quantum dot composite brightening film production equipment in one embodiment.

[0021] Figure 12 This is a schematic diagram of the second prism layer production section in the quantum dot composite brightness enhancement film production equipment in another embodiment;

[0022] Figure 13 This is a schematic diagram of the lower prism layer production section in the quantum dot composite brightness enhancement film production equipment in another embodiment;

[0023] Figure 14 This is a schematic diagram of the coating mechanism in a quantum dot composite brightening film production equipment in one embodiment. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. In the description of this application, "multiple" means two or more, "multiple rows" means two or more rows, "various kinds" means two or more kinds, "multiple groups" means two or more groups, "multiple strips" means two or more strips, and "several" means one, two, or more, unless otherwise explicitly specified.

[0025] This application is a technical improvement based on the prior patent application filed by the applicant with the State Intellectual Property Office on November 30, 2022, entitled "A Quantum Dot Composite Brightness Enhancement Film and its Preparation Method, and a Backlight Display Device," application number 202211523990.8 (hereinafter referred to as the prior patent application). To facilitate understanding of the technical solution of this application, the description of the aforementioned prior patent application is incorporated herein by full reference. For the sake of brevity, the content of the prior patent application description is briefly described here and will not be repeated. The quantum dot composite brightness enhancement film production equipment described in this application is mainly used for producing the quantum dot composite brightness enhancement film described in the prior patent application. Example

[0026] like Figure 1 and Figure 4 As shown.

[0027] This application provides a quantum dot composite brightness enhancement film production equipment, which can be used for the production and processing of quantum dot composite brightness enhancement films. The quantum dot composite brightness enhancement film production equipment includes a frame (not shown) and production components mounted on the frame (see reference). Figures 5 to 8 The rack includes a unit and a controller (not shown). The mounting surface of the rack can be perpendicular to the ground. In other embodiments, the mounting surface of the rack for mounting the units can also be parallel to the ground or inclined relative to the ground. The rack, production components, and controller together constitute a production line for quantum dot composite brightening films.

[0028] The quantum dot composite brightness enhancement film production line includes a quantum dot film production section 100, a first upper prism layer production section 200, and a lower prism layer production section 300 connected in sequence. The discharge end of the quantum dot film production section 100 is directly connected to the feed end of the first upper prism layer production section 200, and the discharge end of the first upper prism layer production section 200 is directly connected to the feed end of the lower prism layer production section 300. The quantum dot film production section 100 is used to produce quantum dot film 1, and the first upper prism layer production section 200 and the lower prism layer production section 300 are used to form a first upper prism layer 2 and a lower prism layer 3 on the upper and lower sides of the quantum dot film 1 to form a quantum dot composite brightness enhancement film. This embodiment of the application can produce quantum dot composite brightness enhancement film through continuous operation, eliminating the need for intermediate winding of semi-finished film materials, transfer to the next production line, and then unloading for production on the next line. This has the advantages of low production difficulty, high production efficiency, and low production cost.

[0029] For details, please refer to Figure 5 The diagram shown is a schematic representation of the quantum dot film production section 100 in the quantum dot composite brightening film production equipment of this embodiment.

[0030] The quantum dot film production section 100 includes a first barrier film feeding unit 101a, a second barrier film feeding unit 101b, a quantum dot adhesive coating mechanism 110, and a laminating mechanism mounted on a frame. The laminating mechanism consists of two opposing pressing rollers 112. The first barrier film feeding unit 101a is used to place the first barrier film roll; the first barrier film feeding unit 101a rotates to uniformly release the first barrier film 11 and supplies the first barrier film 11 to the bonding mechanism through an intermediate transfer component; the second barrier film feeding unit 101b is used to place the second barrier film roll; the second barrier film feeding unit 101b rotates to uniformly release the second barrier film 12 and supplies the second barrier film 12 to the bonding mechanism through an intermediate transfer component; the quantum dot adhesive coating mechanism 110 is arranged close to the first barrier film 11 and is used to coat the liquid quantum dot adhesive on the lower surface of the first barrier film 11 (i.e. the side that is bonded to the upper surface of the second barrier film 12) before the first barrier film 11 enters the bonding mechanism.

[0031] Two pressing rollers 112 rotate in opposite directions, which can press the first barrier film 11 and the second barrier film 12 together with the quantum dot adhesive to form a quantum dot film 1; there is a gap between the two pressing rollers 112, which is just enough for the quantum dot film 1 to pass through.

[0032] In other embodiments, the quantum dot coating mechanism 110 may also be positioned close to the second barrier film 12 to apply liquid quantum dot adhesive to the upper surface of the second barrier film 13 (i.e. the side that is in contact with the upper surface of the first barrier film 11) before the second barrier film 12 enters the bonding mechanism.

[0033] In another embodiment, if the quantum dot coating mechanism 110 is a dispensing device, the dispensing nozzle (also called the dispensing outlet or the discharging outlet) of the dispensing device faces the gap between the two pressing rollers 112. Correspondingly, the two pressing rollers can be placed horizontally, so that the gap between the two pressing rollers 112 is set in the vertical direction. The dispensing nozzle of the dispensing device can be set above the gap between the two pressing rollers 112. Relying on gravity, the quantum dot adhesive is dripped between the first barrier film 11 and the second barrier film 12.

[0034] To expedite the solidification of the liquid quantum dot adhesive in the pressed quantum dot film 1, a quantum dot adhesive curing device 113 is installed behind the pressing roller 112, facing the quantum dot film 1 to ensure the solidification of the liquid quantum dot adhesive. The quantum dot adhesive curing device 113 is preferably a UV (Ultra Violet) lamp curing device. The liquid quantum dot adhesive is composed of quantum dot powder and UV-curing adhesive, and it solidifies rapidly upon exposure to the UV lamp.

[0035] In other embodiments, the liquid quantum dot adhesive can also be a mixture of thermosetting adhesive and quantum dot powder, and the corresponding quantum dot adhesive curing device is a heating device that heats the quantum dot adhesive to cure it quickly.

[0036] In this application, in the direction of the production line for producing quantum dot composite brightening film, during the movement of the film material, the side of each component that receives the film material first is called the front, and the side that receives the film material later is called the rear.

[0037] In order to achieve continuous operation in the production of quantum dot composite brightening film, an intermediate transfer component is also set on the frame. The intermediate transfer component includes an electrostatic bar 106 for static elimination, a dust removal device for dust removal, a tension adjustment mechanism for adjusting the tension of the film material (including base film, barrier film, protective film, composite film, quantum dot composite brightening film, etc.), and a free wheel 102 for conveying the film material.

[0038] The electrostatic bars 106 are generally placed on two opposite sides of the membrane material in pairs to remove static electricity from the surface of the membrane material and reduce dust adsorption on the membrane material.

[0039] The dust removal device generally includes a dust-adhesive wheel 104 and a dust-adhesive paper wheel 105. Two dust-adhesive wheels 104 may be provided; however, in some embodiments, only one dust-adhesive wheel 104 may be provided. The two dust-adhesive wheels 104 are spaced apart along the transport path of the membrane material, and both dust-adhesive wheels 104 are in contact with the same side of the membrane material. The dust-adhesive paper wheel 105 is positioned between the two dust-adhesive wheels 104, and simultaneously contacts the side of the two dust-adhesive wheels 104 away from the membrane material. Understandably, both the adhesive roller 104 and the adhesive paper roller 105 are rotatable, and the adhesive paper roller 105 is equipped with adhesive paper. During operation, the adhesive roller 104 rotates close to the membrane surface to transfer dust from the membrane surface to the adhesive roller 104. Simultaneously, the adhesive roller 104 and the adhesive paper roller 105 are in close contact and rotate towards each other. The adhesive roller 104 can pick up dust from the membrane surface, and then the adhesive paper roller 105 picks up the dust from its surface. In this embodiment, the adhesive force on the surface of the adhesive paper roller 105 is greater than that on the surface of the adhesive roller 104. Furthermore, the used adhesive paper on the adhesive paper roller 105 can be periodically peeled off as needed to expose unused adhesive paper on the adhesive paper roller 105 for picking up dust from the adhesive roller 104, ensuring effective dust removal. The dust removal device is installed on both the upper and lower surfaces of the membrane material.

[0040] The tension adjustment mechanism includes a tension detection wheel 108 and a tension positioning wheel 107. The tension detection wheel 108 detects the tension of the membrane material during transport and adjusts the position of the tension positioning wheel 107 based on the detection result. The position of the tension positioning wheel 107 is movable to adjust the tension of the membrane material during transport and prevent membrane deformation. Specifically, a pressure sensor is installed inside the tension detection wheel 108. The pressure sensor can detect the force exerted by the membrane material on the tension detection wheel 108, thereby reflecting the tension of the membrane material during transport. The pressure sensor can be located on the side of the tension detection wheel 108 closer to the membrane material.

[0041] The freewheel 102 rotates freely to provide smooth support during membrane material transport.

[0042] Furthermore, to ensure a better fit between the film material and the pressing roller 112, a pressing roller 109 can be installed before the film material enters the pressing roller. To facilitate the separation of the pressed film material from the pressing roller 112, a release roller 114 is installed behind the pressing roller 112. For easier material feeding, the roll can be pre-unrolled, and a receiving platform 103 can be installed after the second barrier film feeding unit 101b. When the roll is used up and needs to be replaced, the receiving platform 103 facilitates the connection between different rolls of film. The receiving platform can also be located behind the first barrier film feeding unit 101a.

[0043] Components, devices, or mechanisms such as the electrostatic bar 106, dust removal device (dust-adhesive wheel 104 and dust-adhesive paper wheel 105), tension adjustment mechanism (tension detection wheel 108 and tension positioning wheel 107), and free wheel 102 can be installed in various production sections of the quantum dot composite brightening film production equipment as needed. (Refer to...) Figures 5 to 13 The corresponding labels of each component, device, or mechanism indicate its installation location. In the quantum dot composite brightness enhancement film production equipment, the electric drive components in each component or unit, such as the first barrier film feeding unit, the second barrier film feeding unit, and the bonding mechanism, can be electrically connected to the controller and controlled by the controller.

[0044] The product of the quantum dot film production section 100 is a quantum dot film 1, which includes a quantum dot adhesive layer and a first barrier film 11 and a second barrier film 12 respectively covering the upper and lower surfaces of the quantum dot adhesive layer. The quantum dot film is then directly conveyed to the first upper prism layer production section 200 without being wound up and transferred there; that is, the output end of the quantum dot film production section is directly connected to the inlet end of the first upper prism layer production section 200.

[0045] refer to Figure 6 As shown, the quantum dot film 1 is directly fed into the first upper prism layer production section 200.

[0046] The first upper prism layer production section 200 includes, in sequence, a first adhesive coating mechanism 210, a first coating guide wheel 211, a first pressure roller 209, a first prism structure wheel 212, a first drive wheel 214, a material pulling auxiliary wheel 215, a first curing auxiliary wheel 217, a first protective film feeding unit 203, a first bonding adhesive wheel 201, and a first bonding drive wheel 202. The first pressure roller 209, the first prism structure wheel 212, and the first drive wheel 214 constitute the prism structure forming mechanism.

[0047] The first adhesive application mechanism 210 can be the same as the quantum dot adhesive application mechanism 110, and can be a roller coating assembly. For details, please refer to... Figure 14 The first adhesive coating mechanism 210 includes a container 2101, an applicator roller 2102, and a coating roller 2104. The container 2101 is fixedly mounted on a frame and is used to hold adhesive (e.g., quantum dot adhesive, molding adhesive, or bonding adhesive). The applicator roller 2102 is rotatably disposed within the container 2101. The coating roller 2104 is tangentially disposed to the applicator roller 2102, and protrudes from the opening of the container 2101 so that the side of the coating roller 2104 facing away from the applicator roller 2102 can contact the surface of the film material. Alternatively, the coating roller 2104 can also be rotatably mounted on the frame. During operation, as the applicator roller 2102 rotates, it continuously picks up adhesive from the container 2101 and then transfers it to the coating roller 2104. When the coating roller 2104 contacts the surface of the membrane material, it applies adhesive to the surface to form an adhesive layer. In this embodiment, the gluing roller 2102 can be connected to a drive motor to drive its rotation. Of course, in other embodiments, the gluing roller 2102 can also be driven by the coating roller 2104, which in turn can be driven by the membrane material. In this embodiment, a transfer roller 2103 can be provided between the gluing roller and the coating roller to transfer the adhesive. To prevent adhesive from overflowing and dripping onto the frame during the coating process, a tray is provided below the container 2101 to catch any dripping or overflowing adhesive.

[0048] The guiding action of the first coating guide wheel 211 allows adjustment of the angle between the first coating mechanism 210 and the film material, enabling better contact between the film material and the first coating mechanism 210. Figure 6 The first coating guide wheel 211 adjusts the film material to a vertical position, facilitating better contact between the first coating mechanism 210 and the film material surface. If the angle between the film material and the first coating mechanism 210 is appropriate, the first coating guide wheel 211 may not be necessary.

[0049] The first coating mechanism 210 is used to coat a layer of liquid molding adhesive, preferably UV-curable adhesive, onto the surface of the quantum dot film. The adhesive is then conveyed to the prism structure forming mechanism. First, the film passes through the first pressure roller 209 into the first prism structure wheel 212, and then exits the prism structure forming mechanism via the traction of the first drive wheel 214 and the material pulling auxiliary wheel 215. The surface of the first prism structure wheel 212 is provided with prism textures laser-engraved on a prism. When the quantum dot film passes through the first prism structure wheel 212, the surface coated with the liquid molding adhesive (the coated surface) adheres to the first prism structure wheel 212, forming a prism structure on the coated surface. To ensure a larger and tighter contact area between the coated surface of the quantum dot film 1 and the first prism structure wheel 212, a first pressure roller 209 is provided on the smooth surface of the quantum dot film 1 where no liquid molding adhesive is applied. The first pressure roller 209 presses against the smooth surface of the quantum dot film 1, ensuring close contact between the coated surface of the quantum dot film 1 and the first prism structure wheel 212 before it enters the first drive wheel 214. To facilitate rapid curing of the first upper prism layer 2, a first molding adhesive curing device 213 facing the quantum dot film 1 is provided on the back of the first prism structure wheel 212. In this embodiment, the first molding adhesive curing device 213 is a UV lamp curing device, and the molding adhesive is a UV-curable adhesive. To facilitate stable detachment of the film material from the first drive wheel 214, a pulling auxiliary wheel 215 is provided next to the drive wheel. This allows the film material to detach from the first drive wheel 214 from the position where it is in close contact with the pull auxiliary wheel 215 and then leave the first drive wheel 214 while still close to the pull auxiliary wheel 215. The material-pulling auxiliary wheel 215 can also press the film material onto the surface of the first drive wheel 214, allowing the power of the first drive wheel 214 to be better transmitted to the film material. By adjusting the position of the material-pulling auxiliary wheel 215, the contact area between the film material and the first drive wheel 214 can be adjusted, thereby adjusting the tension of the film material. Since the first upper prism layer is formed and cured by the first forming adhesive curing device 213 while the film material enters the prism mechanism wheel 212, the first upper prism layer has already completed preliminary curing when the film material is in close contact with the material-pulling auxiliary wheel 215. Therefore, even though the side with the first upper prism layer is in close contact with the material-pulling auxiliary wheel 215, it will not cause substantial damage to the first upper prism layer. In other embodiments, if the contact area and tension between the film material and the first drive wheel are appropriate, the material-pulling auxiliary wheel 215 can also be omitted.

[0050] To ensure thorough curing of the colloid in the first upper prism layer, the film enters the first curing auxiliary wheel 217 after leaving the feeding auxiliary wheel 215, adhering closely to the first curing auxiliary wheel 217 with the first upper prism layer facing outwards. Next to the first curing auxiliary wheel 217, a first auxiliary curing device 216, a UV lamp curing device, is provided facing the first upper prism layer. In this embodiment, the first auxiliary curing device 216 is a UV lamp, which can irradiate UV light onto the first upper prism layer 2, enhancing and consolidating the curing effect of the first upper prism layer 2. After the first upper prism layer 2 is applied to the quantum dot film 1, it exhibits a brightening effect and can be referred to as the first quantum dot composite brightening film 10. To facilitate protection of the first upper prism layer during subsequent processing, a protective film needs to be applied to the first upper prism layer.

[0051] The first protective film feeding unit 203 is used to set the protective film roll. The first protective film feeding unit 203 is located on the side of the quantum dot film where the first upper prism layer 2 is located, and is used to supply the first protective film 21 to cover the first upper prism layer 2. The first protective film feeding unit 203 rotates to uniformly release the first protective film 21. The first bonding roller 201 and the first bonding drive roller 202 are positioned opposite each other and rotate in opposite directions, with a gap between them. This gap is used to feed the protective film 21 and the first quantum dot composite brightening film together into the gap between the first bonding roller 201 and the first bonding drive roller 202 to cover the first upper prism layer 2 with a protective film 21. The bonding roller 201 has no driving force and rotates mainly by friction with the film material, while the bonding drive roller 202 has active driving force and can be connected to a drive motor to obtain driving force. The bonding roller 201 is made of adhesive, while the bonding drive roller 202 is made of metal.

[0052] The first quantum dot composite brightening film 10, after being covered with the protective film, can directly enter the next production stage. Alternatively, in other applications, if the first quantum dot composite brightening film 10 can meet the optical design requirements, the first quantum dot composite brightening film 10 can be wound up. During winding and subsequent transportation, the first protective film 21 can protect the first upper prism layer 2 from damage.

[0053] like Figure 7 As shown, the first quantum dot composite brightening film 10 enters the lower prism layer production section 300, that is, the discharge end of the first upper prism layer production section 200 is directly connected to the feed end of the lower prism layer production section 300.

[0054] The lower prism layer production section 300 is used to fabricate a lower prism layer 3 on the surface of the first quantum dot composite brightening film 10 to produce a second quantum dot composite brightening film 20. It includes a second adhesive coating mechanism 310, a second pressure roller 309, a second prism structure roller 312, a second drive roller 314, a second curing auxiliary roller 317, a second protective film feeding unit 303, a second bonding adhesive roller 301, and a second bonding drive roller 302 arranged in sequence.

[0055] It also includes a second molding adhesive curing device 313 located behind the second prism structure wheel 312 and a second auxiliary curing device 316 located behind the second curing auxiliary wheel 317;

[0056] The second pressure roller 309, the second prism structure roller 312, and the second drive roller 314 form a prism structure forming mechanism, and the second bonding roller 301 and the second bonding drive roller 302 form a bonding mechanism.

[0057] In this embodiment, the second coating mechanism 310 is a dispensing mechanism, which is located between the second prism structure wheel 312 and the quantum dot film (i.e., the quantum dot film on the first quantum dot composite brightening film 10). It is used to apply a layer of liquid forming adhesive, preferably a UV curing adhesive, on the surface of the quantum dot film away from the first upper prism layer 2 by uniform dispensing before the quantum dot film enters the second prism structure wheel 312.

[0058] In other embodiments, reference Figure 14 The second adhesive application mechanism 310 can also be the same as the first adhesive application mechanism 210 in the first upper prism layer production section 200, which uses an adhesive application method to set the molding adhesive.

[0059] After the first quantum dot composite brightening film 10 is coated with liquid molding adhesive, it first enters the second prism structure wheel 312 through the gap between the second pressure roller 309 and the second prism structure wheel 312, and then leaves the prism structure forming mechanism by the traction of the second drive wheel 314. The surface of the second prism structure wheel 312 is provided with prism textures laser-engraved on the prism. When the first quantum dot composite brightening film 20 passes through the second prism structure wheel 312, the surface of the first quantum dot composite brightening film 20 coated with liquid molding adhesive (adhesive-coated surface) adheres to the second prism structure wheel 312, and a prism structure can be formed on the surface of the liquid molding adhesive. To ensure a larger and tighter contact area between the adhesive-coated surface of the first quantum dot composite brightening film 10 and the second prism structure wheel 312, a second pressure roller 309 is provided on the surface of the quantum dot film 1 that is not coated with liquid molding adhesive (the glossy surface, i.e., the surface of the first quantum dot composite brightening film 10 covered with the first protective film). The second pressure roller 309 presses against the glossy surface of the quantum dot film 1, ensuring close contact between the adhesive-coated surface of the quantum dot film 1 and the second prism structure wheel 312, before entering the second drive wheel 314. To facilitate rapid curing of the lower prism layer, a second molding adhesive curing device 313 is provided on the back of the second prism structure wheel 312, facing the first quantum dot composite brightening film. In this embodiment, the second molding adhesive curing device 313 is a UV lamp curing device. To ensure more thorough curing of the adhesive in the lower prism layer, after the film material leaves the second drive wheel 314, it enters the second curing auxiliary wheel 317 and adheres tightly to the second curing auxiliary wheel 317, with the lower prism layer facing outwards. Next to the second curing auxiliary wheel 317, there is a second auxiliary curing device 316 facing the upper prism layer. In this embodiment, the second auxiliary curing device 316 is a UV lamp curing device, which can irradiate UV light onto the lower prism layer to enhance and consolidate the curing effect of the lower prism layer.

[0060] After the lower prism layer is added, the first quantum dot composite brightness enhancement film 10 becomes the second quantum dot composite brightness enhancement film 20. For ease of transportation and storage, a protective film is also needed to cover the lower prism layer of the second quantum dot composite brightness enhancement film 20.

[0061] The second protective film feeding unit 303 is used to set the protective film roll. The second protective film feeding unit 303 is located on the side of the quantum dot film where the lower prism layer 2 is located, and is used to supply the second protective film to cover the lower prism layer 2. The second protective film feeding unit 303 rotates to uniformly release the second protective film 31. The second bonding roller 301 and the second bonding drive roller 302 are arranged opposite each other and rotate in opposite directions, with a gap between them. This gap is used to feed the second protective film 31 and the second quantum dot composite brightening film together into the gap between the second bonding roller 301 and the second bonding drive roller 302 to cover the lower prism layer 2 with the second protective film 31. The second bonding roller 301 has no driving force and rotates mainly by friction with the film material, while the second bonding drive roller 302 has an active driving force and can be connected to a drive motor to obtain driving force.

[0062] like Figure 8 As shown, after the quantum dot film forms the first upper prism layer 2 and the lower prism layer 3, it becomes the second quantum dot composite brightening film 20. The second quantum dot composite brightening film 20 is covered with protective films on both the upper and lower sides and can directly enter the winding section 400.

[0063] The take-up section 400 includes a take-up roller, on which the second quantum dot composite brightening film 20 is fed to the take-up roller 403. The take-up roller 403 is used to rotate at a constant speed to take up the second quantum dot composite brightening film 20 onto the take-up roller 403. Example

[0064] In this embodiment, based on the first embodiment, another prism layer can be formed on the first upper prism layer 2, namely the second upper prism layer 4.

[0065] refer to Figure 2 , Figure 5 and Figure 9 , Figure 10 , Figure 11 As shown, and with reference to Embodiment 1.

[0066] The quantum dot composite brightness enhancement film production equipment provided in this embodiment includes a frame (not shown), production components mounted on the frame, and a controller (not shown). The controller is used to control the electrical equipment in the production components. The frame, production components, and controller together constitute a quantum dot composite brightness enhancement film production line. The quantum dot composite brightness enhancement film production line includes a quantum dot film production section 100, a first upper prism layer production section 500, a lower prism layer production section 300a, a second upper prism layer production section 200a, and a winding section 400a connected in sequence. The discharge end of the quantum dot film production section 100 is directly connected to the first upper prism. The feed end of the first upper prism layer production section 500 and the discharge end of the first upper prism layer production section 500 are directly connected to the feed end of the lower prism layer production section 300a. The discharge end of the lower prism layer production section 300a is directly connected to the feed end of the second upper prism layer production section 200a. The quantum dot film production section 100 is used to produce quantum dot film 1. The first upper prism layer production section 500 and the lower prism layer production section 300a are used to form the first upper prism layer 2 and the lower prism layer 3 on the upper and lower sides of the quantum dot film 1, respectively. The second upper prism layer production section is used to form the second upper prism layer 4 above the first upper prism layer 2, so as to form a quantum dot composite brightening film.

[0067] This embodiment shares some similarities with Embodiment 1, but also has some differences.

[0068] In this embodiment, the quantum dot film production section 100 and the lower prism layer production section 300a are the same as in Embodiment 1.

[0069] The first upper prism layer production section 500 in this embodiment is different from the first upper prism layer production section 200 in Embodiment 1, and this embodiment also adds a second upper prism layer production section 200a.

[0070] The difference between this embodiment and the first upper prism layer production section 200 in Embodiment 1 is that, referring to... Figure 9 As shown, in this embodiment, the first protective film feeding unit 203 (refer to Example 1) is used. Figure 6 The base film feeding unit 503 is used to place the base film roll. The base film feeding unit 503 rotates to uniformly release the base film 41. The base film 41 provides a bearing surface in the second upper prism layer production section for forming the second upper prism layer. The base film 41 needs to cover the first upper prism layer 2 and needs to be bonded to it. Therefore, unlike the first upper prism layer production section 200 in Embodiment 1, this embodiment also requires a fourth adhesive coating mechanism 510 below the base film feeding unit 503 to apply adhesive to the side of the base film 41 facing the first upper prism layer 2, thus bonding the base film 41 to the first upper prism layer 2.

[0071] It should be noted that, in order to minimize damage to the prism structure during winding and transportation, the quantum dot composite brightness enhancement film is typically covered with protective films on both sides when not in use (e.g., the first and second protective films in Example 1). These protective films are then removed when the quantum dot composite brightness enhancement film is used. Therefore, the protective film does not need to be bonded to the quantum dot composite brightness enhancement film. However, in this embodiment, to facilitate the formation of the second upper prism layer in the subsequent second upper prism layer production stage, the base film needs to be bonded to the first upper prism layer to prevent it from detaching.

[0072] The first upper prism layer production section 500 in this embodiment is the same as the other parts of the first prism layer production section 200 in Embodiment 1, and will not be described again here.

[0073] In this embodiment, after the quantum dot film 1 is processed by the first upper prism layer production section 500, a first upper prism layer 2 is formed on its upper surface and a base film 41 is bonded to the first upper prism layer 2, thus becoming the first quantum composite brightening film 10a.

[0074] In this embodiment, the discharge end of the first upper prism layer production section 500 is directly connected to the feed end of the lower prism layer production section 300a. The lower prism layer production section 300a is the same as the lower prism layer production section 300 in Embodiment 1, and will not be described again here.

[0075] In this embodiment, after the quantum dot film 1 is processed by the first upper prism layer production section 500 and the lower prism layer production section 300, the first upper prism layer 2 and the lower prism layer are formed on its upper and lower surfaces respectively, becoming the second quantum composite brightening film 20a.

[0076] In this embodiment, the discharge end of the lower prism layer production section 300a is directly connected to the feed end of the second upper prism layer production section 200a. The second upper prism layer production section 200a is the same as the first upper prism layer production section 200 in Embodiment 1, and will not be described again here.

[0077] In this embodiment, after the quantum dot film 1 is processed by the first upper prism layer production section 500, the lower prism layer production section 300, and the second upper prism production section, the first upper prism layer 2 and the lower prism layer are formed on its upper and lower surfaces respectively, and a protective film 42 is covered on the first upper prism layer to become the third quantum composite brightening film 30.

[0078] In this embodiment, the winding section 400a is the same as the winding section 400 in Embodiment 1, and will not be described again here. Example

[0079] This embodiment provides another quantum dot composite brightness enhancement film production equipment.

[0080] refer to Figure 3 , Figure 5 and Figure 9 , Figure 12 , Figure 13 As shown, and with reference to Embodiment 1 and Embodiment 2.

[0081] The quantum dot composite brightness enhancement film production equipment provided in this embodiment includes a frame (not shown), production components mounted on the frame, and a controller (not shown). The controller is used to control the electrical equipment in the production components. The frame, production components, and controller together constitute a quantum dot composite brightness enhancement film production line. The quantum dot composite brightness enhancement film production line includes a quantum dot film production section 100, a first upper prism layer production section 500, a second upper prism layer production section 200b, a lower prism layer production section 30b, and a winding section 400b connected in sequence. The discharge end of the quantum dot film production section 100 is directly connected to the first upper prism layer... The feed end of the production section 100 and the discharge end of the first upper prism layer production section 100 are directly connected to the feed end of the second upper prism layer production section 200b, and the discharge end of the second upper prism layer production section 200b is directly connected to the feed end of the lower prism layer production section 300b. The quantum dot film production section 100 is used to produce quantum dot film 1. The first upper prism layer production section 500 and the second upper prism layer production section 200b are used to form a first upper prism layer 2 and a second upper prism layer 3 on one side of the quantum dot film 1. The lower prism layer production section 300b is used to form a lower prism layer on the other side of the quantum dot film to form a quantum dot composite brightening film.

[0082] This embodiment shares some similarities with Embodiment 1 and Embodiment 2, but also has some differences.

[0083] refer toFigure 5 , Figure 7 , Figure 10 , Figure 13 In this embodiment, the quantum dot film production section 100 and the lower prism layer production section 300b are the same as in Embodiment 1 and Embodiment 2, and will not be described again here.

[0084] The first upper prism layer production section 500 in this embodiment is the same as the first upper prism layer production section 500 in Embodiment 2, and will not be described again here.

[0085] The second upper prism layer production section 200b in this embodiment is the same as the second upper prism layer 200a production section in Embodiment 2. The difference from Embodiment 2 is that in this embodiment, the discharge end of the first upper prism layer production section 100 is directly connected to the feed end of the second upper prism layer production section 200b, and the discharge end of the second upper prism layer production section 200b is directly connected to the feed end of the lower prism layer production section 300b; that is, in this embodiment, after the first upper prism layer 2 is formed on the quantum dot film 1, the second upper prism layer 4 is formed first, and then the lower prism layer 3 is formed. The final product is the same as in Embodiment 2, which is the third quantum composite brightening film 30.

[0086] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A quantum dot composite brightening film production equipment, characterized in that, The system includes a frame, production components mounted on the frame, and a controller. The controller controls the electrical equipment in the production components. The frame, production components, and controller together form a production line for a quantum dot composite brightness enhancement film. The production line includes a quantum dot film production section, a first upper prism layer production section, a lower prism layer production section, and a winding section connected in sequence. The discharge end of the quantum dot film production section is directly connected to the feed end of the first upper prism layer production section, and the discharge end of the first upper prism layer production section is directly connected to the feed end of the lower prism layer production section. The quantum dot film production section is used to produce a quantum dot film. The first upper prism layer production section and the lower prism layer production section are used to form a first upper prism layer and a lower prism layer on the upper and lower sides of the quantum dot film, respectively, to form a quantum dot composite brightness enhancement film.

2. The quantum dot composite brightening film production equipment according to claim 1, characterized in that, The first upper prism layer production section includes a first adhesive coating mechanism, a first pressure roller, a first prism structure roller, a first drive roller, a first curing auxiliary roller, a first protective film feeding unit, a first bonding roller, and a first bonding drive roller arranged in sequence. It also includes a first molding adhesive curing device located behind the first prism structure wheel and a first auxiliary curing device located behind the first curing auxiliary wheel; The first upper prism layer production section is used to fabricate the first upper prism layer on the surface of the quantum dot film; The first coating mechanism is used to apply a layer of liquid forming adhesive to the surface of the quantum dot film; the first pressure roller is used to press the quantum dot film to make it adhere to the first prism structure wheel to increase the adhesion area between the quantum dot film and the first prism structure wheel. The first prism structure wheel is used to form a first upper prism layer on the surface of the quantum dot film coated with liquid molding adhesive; The first molding adhesive curing device is positioned toward the first prism structure wheel to cure the molding adhesive on the quantum dot film; The first drive wheel is used to receive the quantum dot film and provide the power to transport the quantum dot film; The first curing auxiliary wheel is used to receive the quantum dot film so that the first auxiliary curing device can further cure the first upper prism layer on the quantum dot film; the first auxiliary curing device is located next to the first curing auxiliary wheel and is positioned towards the quantum dot film. The first protective film supply unit is located on the side of the quantum dot film where the first upper prism layer is provided, and is used to supply the first protective film to cover the first upper prism layer. The first bonding roller and the first bonding drive roller are arranged opposite each other and rotate in opposite directions, and are used to feed the protective film and the quantum dot film together into the gap between the first bonding roller and the first bonding drive roller to cover the first upper prism layer with a protective film.

3. A quantum dot composite brightening film production equipment, characterized in that, The system includes a frame, production components mounted on the frame, and a controller. The controller controls the electrical equipment in the production components. The frame, production components, and controller together form a quantum dot composite brightness enhancement film production line. The quantum dot composite brightness enhancement film production line includes a quantum dot film production section, a first upper prism layer production section, a lower prism layer production section, a second upper prism layer production section, and a winding section connected in sequence. The discharge end of the quantum dot film production section is directly connected to the feed end of the first upper prism layer production section, the discharge end of the first upper prism layer production section is directly connected to the feed end of the lower prism layer production section, and the discharge end of the lower prism layer production section is directly connected to the feed end of the second upper prism layer production section. The quantum dot film production section is used to produce a quantum dot film. The first upper prism layer production section and the lower prism layer production section are used to form a first upper prism layer and a lower prism layer on the upper and lower sides of the quantum dot film, respectively. The second upper prism layer production section is used to form a second upper prism layer above the first upper prism layer to form a quantum dot composite brightness enhancement film.

4. A quantum dot composite brightening film production equipment, characterized in that, The system includes a frame, production components mounted on the frame, and a controller. The controller controls the electrical equipment in the production components. The frame, production components, and controller together form a quantum dot composite brightness enhancement film production line. The quantum dot composite brightness enhancement film production line includes a quantum dot film production section, a first upper prism layer production section, a second upper prism layer production section, a lower prism layer production section, and a winding section connected in sequence. The discharge end of the quantum dot film production section is directly connected to the feed end of the first upper prism layer production section, the discharge end of the first upper prism layer production section is directly connected to the feed end of the second upper prism layer production section, and the discharge end of the second upper prism layer production section is directly connected to the feed end of the lower prism layer production section. The quantum dot film production section is used to produce a quantum dot film. The first and second upper prism layer production sections are used to form a first upper prism layer and a second upper prism layer on one side of the quantum dot film. The lower prism layer production section is used to form a lower prism layer on the other side of the quantum dot film to form a quantum dot composite brightness enhancement film.

5. The quantum dot composite brightening film production equipment according to claim 3 or 4, characterized in that, The first upper prism layer production section includes a first adhesive coating mechanism, a first pressure roller, a first prism structure roller, a first drive roller, a first curing auxiliary roller, a base film feeding unit, a first bonding roller, and a first bonding drive roller arranged in sequence. It also includes a first molding adhesive curing device located behind the first prism structure wheel and a first auxiliary curing device located behind the first curing auxiliary wheel, as well as a fourth adhesive coating mechanism located below the base film feeding unit. The first upper prism layer production section is used to fabricate the first upper prism layer on the surface of the quantum dot film; The first coating mechanism is used to coat a layer of liquid forming adhesive on the surface of the quantum dot film. The first pressure roller is used to press the quantum dot film to make it fit with the first prism structure wheel in order to increase the bonding area between the quantum dot film and the first prism structure wheel; The first prism structure wheel is used to form a first upper prism layer on the surface of the quantum dot film coated with liquid molding adhesive; The first molding adhesive curing device is positioned toward the first prism structure wheel to cure the molding adhesive on the quantum dot film; The first drive wheel is used to receive the quantum dot film and provide the power to transport the quantum dot film; The first curing auxiliary wheel is used to receive the quantum dot film so that the first auxiliary curing device can further cure the first upper prism layer on the quantum dot film; the first auxiliary curing device is located next to the first curing auxiliary wheel and facing the quantum dot film. The base film feeding unit is located on the side of the quantum dot film where the first upper prism layer is provided, and is used to supply the base film to cover the first upper prism layer. The fourth adhesive coating mechanism is used to apply an adhesive layer to the surface of the base film facing the first upper prism layer. The first bonding roller and the first bonding drive roller are arranged opposite each other and rotate in opposite directions. They are used to feed the base film and the quantum dot film together into the gap between the first bonding roller and the first bonding drive roller so as to cover and bond a base film to the first upper prism layer.

6. The quantum dot composite brightening film production equipment according to claim 3 or 4, characterized in that, The second upper prism layer production section includes a third adhesive coating mechanism, a third pressure roller, a third prism structure roller, a third drive roller, a third curing auxiliary roller, a third protective film feeding unit, a third bonding roller, and a third bonding drive roller arranged in sequence. It also includes a third molding adhesive curing device located behind the third prism structure wheel and a third auxiliary curing device located behind the third curing auxiliary wheel; The second upper prism layer production section is used to fabricate a second upper prism layer above the first upper prism layer of the quantum dot film; The third coating mechanism is used to coat a layer of liquid molding adhesive on the surface of the base film; The third pressure roller is used to press the quantum dot film to make it fit with the third prism structure wheel, thereby increasing the bonding area between the quantum dot film and the third prism structure wheel; The third prism structure wheel is used to form a second upper prism layer on the surface of the base film coated with liquid molding adhesive; The third molding adhesive curing device is positioned toward the third prism structure wheel to cure the molding adhesive on the quantum dot film; The third drive wheel is used to receive the quantum dot film and provide the power to transport the quantum dot film. The third curing auxiliary wheel is used to receive the quantum dot film so that the third auxiliary curing device can further cure the second upper prism layer; the third auxiliary curing device is located next to the third curing auxiliary wheel and facing the quantum dot film; The third protective film supply unit is located on the side close to the second upper prism layer and is used to supply the third protective film to cover the second upper prism layer. The third bonding roller and the third bonding drive roller are arranged opposite to each other and rotate in opposite directions. They are used to feed the third protective film and the third quantum dot composite brightening film together into the gap between the third bonding roller and the third bonding drive roller so as to cover the third protective film on the second upper prism layer.

7. The quantum dot composite brightening film production equipment according to claim 1, 3, or 4, characterized in that, The quantum dot film production section includes a first barrier film feeding unit, a second barrier film feeding unit, a quantum dot adhesive coating mechanism, a laminating mechanism, and a quantum dot adhesive curing device mounted on a frame. The laminating mechanism consists of two opposing rotating pressing rollers. The first and second barrier film feeding units supply the first and second barrier films to the laminating mechanism, respectively. The quantum dot adhesive coating mechanism is positioned close to the first or second barrier film and is used to apply liquid quantum dot adhesive between the first and second barrier films before they enter the laminating mechanism. The quantum dot adhesive curing device is located behind the pressing rollers and faces the laminated quantum dot film to cure the quantum dot adhesive.

8. The quantum dot composite brightening film production equipment according to claim 1, 3, or 4, characterized in that, The lower prism layer production section includes, in sequence, a second adhesive coating mechanism, a second pressure roller, a second prism structure roller, a second drive roller, a second curing auxiliary roller; a second protective film feeding unit, a second bonding roller, and a second bonding drive roller; It also includes a second molding adhesive curing device located behind the second prism structure wheel and a second auxiliary curing device located behind the second curing auxiliary wheel; The lower prism layer production section is used to fabricate the lower prism layer on the surface of the quantum dot film. The second coating mechanism is used to apply liquid forming adhesive between the second prism structure wheel and the quantum dot film, so as to coat a layer of liquid forming adhesive on the surface of the quantum dot film away from the first upper prism layer. The second pressure roller is used to press the quantum dot film to make it fit with the second prism structure roller; the second prism structure roller is used to form a lower prism layer on the surface of the quantum dot film coated with liquid molding adhesive; The second molding adhesive curing device is positioned toward the second prism structure wheel to cure the molding adhesive on the quantum dot film; The second drive wheel is used to receive the quantum dot film and provide power; the second curing auxiliary wheel is used to receive the quantum dot film so that the second auxiliary curing device can further cure the lower prism layer on the quantum dot film; the second auxiliary curing device is located on the second curing auxiliary wheel and is positioned towards the quantum dot film; The second protective film supply unit is located on the side of the quantum dot film where the lower prism layer is located, and is used to supply the second protective film to cover the lower prism layer; The second bonding roller and the second bonding drive roller are arranged opposite each other and rotate in opposite directions. They are used to feed the protective film and the quantum dot film together into the gap between the second bonding roller and the second bonding drive roller to cover the lower prism layer with a protective film.

9. The quantum dot composite brightening film production equipment according to claim 1, 3, or 4, characterized in that, The take-up section includes a take-up wheel, which is used to rotate at a constant speed to take up the quantum dot composite brightening film onto the take-up wheel.

10. The quantum dot composite brightening film production equipment according to claim 1, 3, or 4, characterized in that, The production line for quantum dot composite brightening film is also equipped with freewheels, tension adjustment mechanisms, dust removal devices, electrostatic bars, and coating guide wheels.

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