CN111025702A - Method for manufacturing large-size liquid crystal panel through bottom-up full lamination - Google Patents
Method for manufacturing large-size liquid crystal panel through bottom-up full lamination Download PDFInfo
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- CN111025702A CN111025702A CN201911411182.0A CN201911411182A CN111025702A CN 111025702 A CN111025702 A CN 111025702A CN 201911411182 A CN201911411182 A CN 201911411182A CN 111025702 A CN111025702 A CN 111025702A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- Manufacturing & Machinery (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application discloses a method for manufacturing a large-size liquid crystal panel by full lamination from bottom to top, which comprises the steps of placing a touch screen positioned on the upper part and an optical adhesive layer positioned on the lower part in a face-to-face mode; moving the optical adhesive layer upwards until the optical adhesive layer is attached to the touch screen; placing the intermediate of the touch screen and the optical adhesive layer on the upper surface, and placing the optical adhesive layer in the intermediate and the liquid crystal module below face to face; and moving the liquid crystal module upwards until the liquid crystal module is attached to the optical adhesive layer. The method for manufacturing the large-size liquid crystal panel through full lamination from bottom to top can improve the lamination precision and the lamination yield and reduce the production cost and loss.
Description
Technical Field
The invention belongs to the technical field of liquid crystal panel manufacturing, and particularly relates to a method for manufacturing a large-size liquid crystal panel through full lamination from bottom to top.
Background
With the continuous progress of the times, the technology of 5G, AI is mature day by day, and in the fields of families, work, social contact, propaganda and the like, the 4K and 8K displays which are clearer, more intelligent and richer in content can better meet the consumption, work and social contact requirements of the public. Meanwhile, in the era of 5G + screen networking, the intelligent terminals all need to carry touch functions to realize human-computer interaction, and large-screen displays such as electronic whiteboards, advertising machines, conference panels and intelligent televisions become new starting points for the future touch industry to grow up again. With the increasing upgrading of display technologies, the development of liquid crystal panels towards large size and ultra high definition has become a necessary trend. A key device required in the production process of the intelligent large screen is a large-size full-lamination device. As a development direction of the bonding technology, the liquid crystal panel full-bonding technology is gradually replacing the conventional frame bonding technology, and has become a standard for small-sized (below 20 inches) products such as mobile phones, flat panels, vehicles and the like, and almost all of the liquid crystal panel full-bonding technology uses the OCA full-bonding mode. However, with the existing full-lamination technology, there are many technical difficulties in applying OCA as a full-lamination main material to large-size (more than 55 inches) products, so that there is an urgent need in the industry to provide a full-lamination method that can truly realize hard-to-hard high precision and high yield to meet the full-lamination production of large-size display devices, especially when high-definition (4K/8K) display screens begin to become the mainstream configuration of products of terminal manufacturers.
Currently, fujiprefeam company in japan develops the technology abroad, but equipment developed in japan is mainly used for CCF lamination, and many problems still need to be improved due to the particularity of CCF materials. Such as: easy-to-pull glue and glue overflow at the edge of the CCF; the requirement on storage conditions is high; the precision requirement on the laminating equipment is extremely high, and the requirement on the laminating condition is extremely high; the CCF glue is easy to crush, the rebound ratio of bubbles is high, and the like. The traditional technology is adopted in the existing interactive terminal, so that the problems of touch sensitivity, accuracy, durability and the like during interaction exist. Due to the fact that a frame pasting process is adopted in the mainstream, multi-point touch control and multi-level operation cannot be achieved, and the display effect and the touch performance are far inferior to those of a full pasting process. Full lamination technology for large-size products is not yet mature worldwide: the laminating efficiency is low, and the qualified rate is low; the overall production cost is very high. At present, large-size roller type full-laminating equipment is not purchased in China, and the main competitor is Fujiprep Corporation in Japan.
At present, a large-size touch full-lamination technology mostly adopts a liquid optical adhesive (water glue) lamination technology, but the technology also has a plurality of problems at present, such as: the process is complex, the efficiency is low, various auxiliary devices are needed, and the processes of dispensing, pre-curing, curing and the like are needed; proportioning and stirring the glue; the edge is easy to overflow glue, and the yield is low; the drying time is too long, and yellow screen and other problems are easy to occur on the screen. Because the yield of the water glue full-lamination technology is low and the cost is high, the frame lamination is still the main part of the current large-size liquid crystal panel, and the water glue full-lamination is the auxiliary part. The application of the OCA full-lamination process to a large-size display device module can greatly improve the technical reliability index of a product, the product is greatly improved in the indexes of scratch resistance, shock resistance, falling resistance, distortion resistance and the like, and the performance index is greatly improved in the environment impact experiments of dust prevention, water resistance, salt mist resistance, temperature resistance, humidity resistance and the like, so that the OCA full-lamination of a large-size liquid crystal panel is a necessary development trend.
At present, the mature attaching technology exists in the market, but the attaching technology is basically the attaching of the medium-sized and small-sized screens, the attaching is carried out in a mode that the lower part is fixed, the upper material is descended, and the attaching mode is suitable for products of the medium-sized and small-sized screens. However, when the size is larger than 55 inches, the perfect bonding of the large-size screen cannot be completed by the existing top-down bonding technology, in the large-size bonding process, the bonding yield is lower along with the larger size, the main factor influencing the bonding yield is that the large-size optical adhesive is softer, and in the process of bonding the optical adhesive from top to bottom, the optical adhesive falls down under the action of gravity, so that bubbles are easily generated in the bonding process, the whole bonding process is not smooth enough, the bonding effect is poor, and the bubbles are not generated as much as possible in the full bonding process, so that the display effect is influenced by the bubbles.
Disclosure of Invention
In order to solve the problems, the invention provides a method for manufacturing a large-size liquid crystal panel by full lamination from bottom to top, which can improve the lamination precision and the lamination yield and reduce the production cost and loss.
The invention provides a method for manufacturing a large-size liquid crystal panel by full lamination from bottom to top, which comprises the following steps:
the touch screen positioned on the upper side and the optical adhesive layer positioned on the lower side are placed in a face-to-face mode;
moving the optical adhesive layer upwards until the optical adhesive layer is attached to the touch screen;
placing the intermediate of the touch screen and the optical adhesive layer on the upper surface, and placing the optical adhesive layer in the intermediate and the liquid crystal module below face to face;
and moving the liquid crystal module upwards until the liquid crystal module is attached to the optical adhesive layer.
Preferably, in the method for manufacturing a large-size liquid crystal panel by full bottom-up lamination, the touch screen located above and the optical adhesive layer located below are placed face to face as follows:
and adsorbing the touch screen on a rotary turning plate, placing the optical adhesive layer on a lifting screen plate adjacent to the rotary turning plate, and turning the rotary turning plate over to be right above the lifting screen plate.
Preferably, in the method for manufacturing a large-size liquid crystal panel by full bottom-up lamination, the optical adhesive layer is moved upwards until being laminated with the touch screen "
And moving the optical adhesive layer upwards by using a mode of lifting the lifting screen plate until the optical adhesive layer is attached to the touch screen.
Preferably, in the method for manufacturing a large-size liquid crystal panel by full bottom-up lamination, the placing the intermediate body of the laminated touch screen and the optical adhesive layer on the upper surface, and placing the optical adhesive layer in the intermediate body and the liquid crystal module below the intermediate body face to face includes:
and adsorbing the intermediate of the attached touch screen and the optical adhesive layer on a rotary turning plate, placing the liquid crystal module on the lifting screen plate adjacent to the rotary turning plate, and turning the rotary turning plate to be right above the lifting screen plate so that the optical adhesive layer and the liquid crystal module positioned below are placed face to face.
Preferably, in the method for manufacturing a large-size liquid crystal panel by full bottom-up lamination, moving up the liquid crystal module until the liquid crystal module is laminated with the optical adhesive layer includes:
and moving the liquid crystal module upwards by using a mode of lifting the lifting screen plate until the liquid crystal module is attached to the optical adhesive layer.
Preferably, in the method for manufacturing a large-size liquid crystal panel by full-lamination from bottom to top, the moving up of the optical adhesive layer until the optical adhesive layer is laminated with the touch screen comprises:
and moving the optical adhesive layer upwards, and attaching the optical adhesive layer and the touch screen together by using a roller mechanism.
Preferably, in the method for manufacturing a large-size liquid crystal panel by full-lamination from bottom to top, moving up the liquid crystal module until the liquid crystal module is laminated with the optical adhesive layer comprises:
and moving the liquid crystal module upwards, and attaching the liquid crystal module and the optical adhesive layer together by using a roller mechanism.
According to the description, the method for manufacturing the large-size liquid crystal panel by full lamination from bottom to top provided by the invention comprises the steps of firstly placing the touch screen positioned on the upper part and the optical adhesive layer positioned on the lower part in a face-to-face mode; moving the optical adhesive layer upwards until the optical adhesive layer is attached to the touch screen; then placing the attached touch screen and the intermediate body of the optical adhesive layer on the upper surface, and placing the optical adhesive layer in the intermediate body and the liquid crystal module positioned below the intermediate body face to face; and finally, the liquid crystal module is moved upwards until the liquid crystal module is attached to the optical adhesive layer, so that the whole optical adhesive layer is supported by the bottom surface, the adhesion smoothness can be ensured, the liquid crystal module is also in the same way, the attachment precision and the attachment yield can be improved, and the production cost and the loss are reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram of a method for manufacturing a large-sized liquid crystal panel by bottom-up full lamination according to the present application;
FIG. 2 is a schematic illustration of an apparatus employed in an embodiment of the present application;
fig. 3 is a schematic view showing a state where the rotary flap is turned over above the lifting screen.
Detailed Description
The core of the invention is to provide a method for manufacturing a large-size liquid crystal panel by full lamination from bottom to top, which can improve the lamination precision and the lamination yield and reduce the production cost and loss.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic diagram of a method for manufacturing a large-sized liquid crystal panel by bottom-up full lamination according to the present application, where fig. 1 is a schematic diagram of the method for manufacturing a large-sized liquid crystal panel by bottom-up full lamination according to the present application, and the method includes the following steps:
s1: the touch screen positioned on the upper side and the optical adhesive layer positioned on the lower side are placed in a face-to-face mode;
it should be noted that, because the full-lamination is performed on the large-sized liquid crystal panel, the large size may be 55 inches to 120 inches, and thus the area of the optical adhesive layer used is relatively large, and the periphery of the optical adhesive layer is prone to sag naturally, but in this step, the optical adhesive layer is placed below the optical adhesive layer, and the planar support is arranged below the optical adhesive layer, so that all the positions can be guaranteed to be on the same horizontal plane, and therefore the pasting of all the positions can be guaranteed to have high enough precision, and only the support is arranged below the optical adhesive layer, and the upper surface of the optical adhesive layer is opposite to the touch screen, so that the pasting effect is not affected, and the touch screen above the optical adhesive layer is not soft, so that the optical adhesive layer and the touch screen are placed face to face, and all the positions of the optical. It should be further noted that the optical cement, i.e. OCA, can reduce glare, reduce loss of light emitted by the LCM, increase brightness of the LCM and provide high transmittance, reduce energy consumption, increase contrast, especially contrast under strong light irradiation, and has higher strength; the adhesive can effectively avoid Newton rings, has good filling performance, no bubbles in the adhesion, no glue overflow at the edge, wide application, high production efficiency, uniform thickness, no glue overflow, no corrosion and no yellowing.
S2: moving the optical adhesive layer upwards until the optical adhesive layer is attached to the touch screen;
it should be noted that the touch screen above can be kept still, only the optical adhesive layer is moved upwards, the touch screen and the optical adhesive layer are attached after being contacted, and the flat characteristics of the touch screen and the optical adhesive layer can ensure the flat characteristics after being attached.
S3: placing the intermediate of the touch screen and the optical adhesive layer on the upper surface, and placing the optical adhesive layer in the intermediate and the liquid crystal module below face to face;
during specific operation, after optical cement layer and touch-sensitive screen laminating, will remove it earlier, make the LCD module can go up the material, then go back its translation again, just like first step, the LCD module that lies in below this moment is because some support, consequently can guarantee everywhere levelly and smoothly, above-mentioned touch-sensitive screen and optical cement layer's midbody also can adsorb on, keep optical cement layer to lie in below and make optical cement layer and LCD module face to face setting, because will realize the laminating with the LCD module through optical cement layer.
S4: and moving the liquid crystal module upwards until the liquid crystal module is attached to the optical adhesive layer.
Specifically, the intermediate body can be kept still, and the liquid crystal module is only moved upwards until the liquid crystal module is firmly attached to the optical adhesive layer after contacting with the optical adhesive layer, so that the attachment is firmer. Make the screen can realize completely cutting off dust and steam through this kind of full laminating technique, the space has been filled to the optics glue film, combine closely between touch-sensitive screen and the display screen, dust and steam do not have the department and can go into, keep the cleanliness factor of screen, can make the screen have better display effect through full laminating technology, the air between the screen has been eliminated, thereby reduce the reflection of light by a wide margin, thereby reduce the light loss that sees through and promote luminance, the display effect of reinforcing screen, it is more penetrating to let the picture.
According to the above description, the method for manufacturing a large-size liquid crystal panel by full-lamination from bottom to top provided by the present application includes that the touch screen located above and the optical adhesive layer located below are placed face to face; moving the optical adhesive layer upwards until the optical adhesive layer is attached to the touch screen; then placing the attached touch screen and the intermediate body of the optical adhesive layer on the upper surface, and placing the optical adhesive layer in the intermediate body and the liquid crystal module positioned below the intermediate body face to face; at last, the liquid crystal module is moved upwards until being attached to the optical adhesive layer, and the whole optical adhesive layer is supported by the bottom surface, so that the adhesion smoothness can be guaranteed, the liquid crystal module is also in the same way, the attachment precision and the attachment yield can be improved, and the production cost and the loss are reduced.
In a specific embodiment of the above method for manufacturing a large-size liquid crystal panel by full bottom-up lamination, the touch screen located above and the optical adhesive layer located below are placed face to face as follows:
the touch screen is adsorbed on the rotary turning plate, the optical adhesive layer is placed on the lifting screen plate adjacent to the rotary turning plate, and the rotary turning plate is turned over to be right above the lifting screen plate.
Specifically, referring to fig. 2, fig. 2 is a schematic view of the apparatus adopted in the embodiment of the present application, and it can be seen that the touch screen 203 may be firstly attached to the rotary flap 204, the optical adhesive layer 201 is placed on the lifting screen 202, and the rotary flap 204 may be turned over to be directly over the lifting screen 202, so that the touch screen 203 and the optical adhesive 201 are directly over.
In another embodiment of the above method for manufacturing a large-sized liquid crystal panel by full-lamination from bottom to top, moving up the optical adhesive layer until the optical adhesive layer is laminated with the touch screen comprises:
and moving the optical adhesive layer upwards by using a mode of lifting the screen plate until the optical adhesive layer is attached to the touch screen.
Specifically, referring to fig. 3, fig. 3 is a schematic view illustrating a state that the rotating turning plate is turned over above the lifting screen plate, and it can be seen that at this time, the lifting screen plate 202 can be lifted, and the optical adhesive layer 201 is lifted to be in contact with and attached to the touch screen 203.
In another embodiment of the method for manufacturing a large-sized liquid crystal panel by full bottom-up lamination, the step of placing the intermediate body of the touch screen and the optical adhesive layer after lamination on the upper surface and placing the optical adhesive layer in the intermediate body and the liquid crystal module below the intermediate body face to face comprises:
the midbody of the touch screen and the optical adhesive layer after being attached is adsorbed on the rotary turning plate, the liquid crystal module is placed on the lifting screen plate adjacent to the rotary turning plate, the rotary turning plate is turned over to the position right above the lifting screen plate, the optical adhesive layer and the liquid crystal module positioned below the optical adhesive layer are placed face to face, in the embodiment, all operations are easy to achieve, and the smoothness of final attachment can be guaranteed.
In a preferred embodiment of the above method for manufacturing a large-sized liquid crystal panel by full bottom-up lamination, moving up the liquid crystal module until the liquid crystal module is laminated with the optical adhesive layer comprises:
the liquid crystal module is moved upwards by lifting the screen plate until the liquid crystal module is attached to the optical adhesive layer, which can also refer to fig. 3, and the operation mode is the same, so that the final attaching smoothness can be ensured.
In another preferred embodiment of the above method for manufacturing a large-size liquid crystal panel by full bottom-up lamination, moving up the optical adhesive layer until the optical adhesive layer is laminated with the touch screen comprises:
and moving the optical adhesive layer upwards, and attaching the optical adhesive layer and the touch screen together by using a roller mechanism.
In another preferred embodiment of the above method for manufacturing a large-sized liquid crystal panel by full bottom-up lamination, moving up the liquid crystal module until the liquid crystal module is laminated with the optical adhesive layer comprises:
the liquid crystal module is moved upwards, and the liquid crystal module and the optical adhesive layer are attached together by using the roller mechanism.
It should be noted that, after the roller mechanism is utilized, the optical cement can be attached to the touch screen and the liquid crystal module more closely, and the effect is better.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A method for manufacturing a large-size liquid crystal panel by full lamination from bottom to top is characterized by comprising the following steps:
the touch screen positioned on the upper side and the optical adhesive layer positioned on the lower side are placed in a face-to-face mode;
moving the optical adhesive layer upwards until the optical adhesive layer is attached to the touch screen;
placing the intermediate of the touch screen and the optical adhesive layer on the upper surface, and placing the optical adhesive layer in the intermediate and the liquid crystal module below face to face;
and moving the liquid crystal module upwards until the liquid crystal module is attached to the optical adhesive layer.
2. The method for manufacturing a large-sized liquid crystal panel by bottom-up full lamination according to claim 1, wherein the touch screen on the upper side and the optical adhesive layer on the lower side are placed face to face as follows:
and adsorbing the touch screen on a rotary turning plate, placing the optical adhesive layer on a lifting screen plate adjacent to the rotary turning plate, and turning the rotary turning plate over to be right above the lifting screen plate.
3. The method for manufacturing a large-sized liquid crystal panel by bottom-up full lamination according to claim 2, wherein the step of moving up the optical adhesive layer until the optical adhesive layer is laminated with the touch screen comprises the following steps:
and moving the optical adhesive layer upwards by using a mode of lifting the lifting screen plate until the optical adhesive layer is attached to the touch screen.
4. The method of claim 3, wherein the disposing the intermediate body of the touch screen and the optical adhesive layer on the top and the optical adhesive layer facing the liquid crystal module below comprises:
and adsorbing the intermediate of the attached touch screen and the optical adhesive layer on a rotary turning plate, placing the liquid crystal module on the lifting screen plate adjacent to the rotary turning plate, and turning the rotary turning plate to be right above the lifting screen plate so that the optical adhesive layer and the liquid crystal module positioned below are placed face to face.
5. The method of claim 4, wherein moving the liquid crystal module upward until the liquid crystal module is bonded to the optical adhesive layer comprises:
and moving the liquid crystal module upwards by using a mode of lifting the lifting screen plate until the liquid crystal module is attached to the optical adhesive layer.
6. The method for manufacturing a large-size liquid crystal panel by bottom-up full lamination according to any one of claims 1 to 5, wherein the moving up of the optical adhesive layer until the optical adhesive layer is laminated with the touch screen is as follows:
and moving the optical adhesive layer upwards, and attaching the optical adhesive layer and the touch screen together by using a roller mechanism.
7. The method for manufacturing a large-sized liquid crystal panel by bottom-up full lamination according to any one of claims 1 to 5, wherein the step of moving up the liquid crystal module until the liquid crystal module is laminated with the optical adhesive layer comprises:
and moving the liquid crystal module upwards, and attaching the liquid crystal module and the optical adhesive layer together by using a roller mechanism.
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