CN111999920A - Laminating process and device for liquid crystal display and liquid crystal display - Google Patents
Laminating process and device for liquid crystal display and liquid crystal display Download PDFInfo
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- CN111999920A CN111999920A CN202010919574.4A CN202010919574A CN111999920A CN 111999920 A CN111999920 A CN 111999920A CN 202010919574 A CN202010919574 A CN 202010919574A CN 111999920 A CN111999920 A CN 111999920A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 265
- 238000000034 method Methods 0.000 title claims abstract description 74
- 230000008569 process Effects 0.000 title claims abstract description 68
- 238000010030 laminating Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 300
- 230000001070 adhesive effect Effects 0.000 claims abstract description 295
- 239000000853 adhesive Substances 0.000 claims abstract description 292
- 239000011521 glass Substances 0.000 claims abstract description 224
- 239000012188 paraffin wax Substances 0.000 claims abstract description 120
- 230000002093 peripheral effect Effects 0.000 claims abstract description 119
- 230000000903 blocking effect Effects 0.000 claims abstract description 81
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000001301 oxygen Substances 0.000 claims abstract description 78
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 78
- 238000003848 UV Light-Curing Methods 0.000 claims abstract description 66
- 230000005764 inhibitory process Effects 0.000 claims abstract description 43
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 22
- 239000003292 glue Substances 0.000 claims description 24
- 239000006059 cover glass Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims 1
- 239000000047 product Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 16
- 239000010410 layer Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 14
- 239000012466 permeate Substances 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 229920005989 resin Polymers 0.000 description 12
- 238000006116 polymerization reaction Methods 0.000 description 10
- 238000001723 curing Methods 0.000 description 8
- 239000000084 colloidal system Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
- 238000010526 radical polymerization reaction Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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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
-
- 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
-
- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
One or more embodiments of the specification disclose a bonding process and bonding equipment for a liquid crystal display and the liquid crystal display. The attaching process for the display comprises the following steps: coating a liquid adhesive on at least the liquid crystal display panel or the glass cover plate; attaching the liquid crystal display screen to the glass cover plate, wherein the liquid adhesive is bonded in a gap between the liquid crystal display screen and the glass cover plate; providing a paraffin blocking wall at a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside; the liquid adhesive is subjected to UV curing treatment, so that the phenomenon of oxygen inhibition of the liquid adhesive in the laminating process can be avoided, and the product quality and the process yield of the liquid crystal display are improved.
Description
Technical Field
The present document relates to the field of display technologies, and in particular, to a bonding process and a bonding apparatus for a liquid crystal display, and a liquid crystal display.
Background
With the development of science and technology and the improvement of the requirements of people on touch display products, the quality of the touch display products is continuously developed. The touch display product is usually a liquid crystal display, which is an active matrix liquid crystal display driven by a thin film transistor, and mainly uses a current to stimulate liquid crystal molecules to generate points, lines and surfaces to match with a back lamp tube to form a picture. The liquid crystal display comprises a liquid crystal display screen and cover glass, wherein the cover glass covers the upper part and the lower part of the liquid crystal display screen. After the lcd panel is manufactured, the cover glass is bonded to the lcd panel, which is called a bonding process of the lcd panel, and the lcd panel and the cover glass are typically bonded together by using a liquid adhesive such as glue.
The problem exists that when the liquid adhesive is not ready for UV curing during the attachment process of the liquid crystal display, the liquid adhesive and oxygen in the air generate oxygen inhibition, which causes viscous oil-like oxides around the edge of the adhesive layer and inside the edge of the adhesive layer of the liquid crystal display product to be attached, thereby affecting the quality and yield of the liquid crystal display product. Therefore, how to avoid the oxygen inhibition phenomenon of the liquid adhesive in the bonding process and improve the product quality and the process yield of the liquid crystal display becomes a technical problem which needs to be solved urgently.
Disclosure of Invention
One or more embodiments of the present disclosure are directed to a bonding process, a bonding apparatus, and a liquid crystal display, which can prevent an oxygen inhibition phenomenon from occurring in a liquid adhesive in the bonding process, and improve the product quality and process yield of the liquid crystal display.
To solve the above technical problem, one or more embodiments of the present specification are implemented as follows:
in a first aspect, a bonding process for a display is provided, including: coating a liquid adhesive on at least the liquid crystal display panel or the glass cover plate; attaching the liquid crystal display screen to the glass cover plate, wherein the liquid adhesive is bonded in a gap between the liquid crystal display screen and the glass cover plate; providing a paraffin blocking wall at a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside; and carrying out UV curing treatment on the liquid adhesive.
In a second aspect, a laminating device for a liquid crystal display is provided, which comprises a spray valve dispenser, a first support frame, a second support frame and a rotating shaft for respectively installing the first support frame and the second support frame, the first support frame is used for installing a liquid crystal display screen, the second support frame is used for installing a glass cover plate, the first support frame and the second support frame rotate relatively on the rotating shaft and move up and down along the rotating shaft, when the first support frame is provided with a liquid crystal display screen and the second support frame is provided with a glass cover plate, after the first support frame and the second support frame are buckled, the valve-spraying glue dispenser sprays molten paraffin on the peripheral area of the gap between the first support frame and the second support frame to obtain a cooled paraffin blocking wall, the paraffin blocking wall isolates the liquid adhesive in the peripheral region of the gap from the outside.
In a third aspect, a liquid crystal display is provided, comprising a liquid crystal display panel, a glass cover plate, and a UV-cured liquid adhesive disposed in a peripheral region of a gap between the liquid crystal display panel and the glass cover plate, wherein the UV-cured liquid adhesive disposed in at least the spaced peripheral region is free from oxygen inhibition; the liquid crystal display is prepared by the following steps: coating a liquid adhesive on at least the liquid crystal display panel or the glass cover plate; attaching the liquid crystal display screen to the glass cover plate, wherein the liquid adhesive is bonded in a gap between the liquid crystal display screen and the glass cover plate; providing a paraffin blocking wall at a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside; and carrying out UV curing treatment on the liquid adhesive.
As can be seen from the technical solutions provided in one or more embodiments of the present disclosure, in the bonding process for a display provided in the present application, a liquid adhesive is first coated on a liquid crystal display or a glass cover plate, or the liquid adhesive is coated on the liquid crystal display and the glass cover plate, then the liquid crystal display and the glass cover plate are attached, the liquid adhesive is bonded in a gap between the liquid crystal display and the glass cover plate, then a paraffin blocking wall is disposed in a peripheral area of the gap, so that the liquid adhesive in the peripheral area of the gap can be isolated from the outside, and finally the liquid adhesive between the liquid crystal display and the glass cover plate is UV cured. It can be seen that in the attaching process for the display provided by the application, the paraffin blocking wall is arranged at the peripheral position of the gap between the liquid crystal display and the glass cover plate after the liquid crystal display and the glass cover plate are attached, and as the paraffin and the organic resin such as the liquid adhesive mentioned in the application have incompatibility, the paraffin cannot permeate into the colloid, so that the oxygen inhibition effect can be achieved by isolating oxygen in the air and water from the liquid adhesive.
Drawings
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, reference will now be made briefly to the attached drawings, which are needed in the description of one or more embodiments or prior art, and it should be apparent that the drawings in the description below are only some of the embodiments described in the specification, and that other drawings may be obtained by those skilled in the art without inventive exercise.
Fig. 1 is a schematic step diagram of a bonding process for a display provided in an embodiment of the present disclosure.
Fig. 2 is a schematic step diagram of another bonding process for a display provided in an embodiment of the present disclosure.
Fig. 3 is a schematic step diagram of another bonding process for a display provided in an embodiment of the present disclosure.
Fig. 4 is a schematic step diagram of another bonding process for a display provided in an embodiment of the present disclosure.
Fig. 5 is a schematic step diagram of another bonding process for a display provided in an embodiment of the present disclosure.
Fig. 6 is a schematic longitudinal cross-sectional view of a pasting device for a display according to an embodiment of the present disclosure.
Fig. 7 is a schematic longitudinal cross-sectional view of a pasting device for a display according to an embodiment of the present disclosure.
10-a first support frame; 20-a second support; 30-a liquid binder; 40-paraffin blocking wall; 50-closed space.
Detailed Description
In order to make the technical solutions in the present specification better understood, the technical solutions in one or more embodiments of the present specification will be clearly and completely described below with reference to the accompanying drawings in one or more embodiments of the present specification, and it is obvious that the one or more embodiments described are only a part of the embodiments of the present specification, and not all embodiments. All other embodiments that can be derived by a person skilled in the art from one or more of the embodiments described herein without making any inventive step shall fall within the scope of protection of this document.
According to the attaching process for the display provided by the embodiment of the specification, the liquid adhesive in the peripheral area is isolated from the outside by the paraffin blocking wall arranged at the peripheral position of the gap between the attached liquid crystal display screen and the glass cover plate, so that oxygen inhibition effect generated by oxygen, moisture and the liquid adhesive in the air can be avoided, and the product quality and the process yield of the liquid crystal display are improved. The following describes in detail the attaching process for a display and the steps thereof provided in the embodiments of the present disclosure.
Example one
Referring to fig. 1, a bonding process for a display provided in an embodiment of the present disclosure is applicable to bonding a liquid crystal display panel and a glass cover plate in a liquid crystal display, and the bonding process for a display includes:
step 10: coating a liquid adhesive on at least the liquid crystal display panel or the glass cover plate;
when a liquid crystal display screen of a liquid crystal display is attached to a glass cover plate, firstly, a liquid adhesive is coated on an attaching surface of the liquid crystal display screen or an attaching surface of the glass cover plate, or the liquid adhesive is coated on the attaching surface of the liquid crystal display screen and the attaching surface of the glass cover plate respectively, the liquid adhesive can be common UV curing glue, and the curing energy of the UV curing glue is 3200-5000 mj/cm2The temperature of the surface of the cover glass during UV curing is not more than 55 ℃, the UV curing time is 15-30 s, and the coating thickness of the liquid adhesive is 200-350 um.
When the traditional liquid crystal display is attached to the glass cover plate, the liquid adhesive in the gap between the liquid crystal display and the glass cover plate can generate oxygen polymerization inhibition with oxygen and moisture in the air, and the oxygen and the moisture in the air can generate polymerization inhibition on free radical polymerization of a light curing material in the liquid adhesive, so that in a glue layer formed after the liquid adhesive is cured, particularly, viscous oil oxides appear on the surface of the glue layer in the peripheral area of the gap or in the inside of the glue layer in the peripheral area of the gap after the liquid adhesive is cured, and the product quality and the display parallax of the display are affected. The bonding process for the display provided by the embodiment of the specification can be implemented after the liquid crystal display and the glass cover plate are bonded, and before UV curing, a paraffin blocking wall is arranged in the peripheral area of the liquid adhesive in the gap between the liquid crystal display and the glass cover plate, so that the liquid adhesive in the peripheral area of the gap is isolated from the outside, and the liquid adhesive is prevented from generating oxygen inhibition with oxygen and moisture in the outside air. The paraffin blocking wall made of paraffin materials is arranged because paraffin cannot be compatible with organic resin materials such as liquid adhesives, so that paraffin cannot permeate into the liquid adhesives, and the paraffin blocking wall plays a role in isolating the liquid adhesives in the gap between the liquid crystal display screen and the glass cover plate from the outside.
Step 20: attaching the liquid crystal display screen to the glass cover plate, and bonding a liquid adhesive in a gap between the liquid crystal display screen and the glass cover plate;
after coating the liquid adhesive on the binding face of the liquid crystal display or the binding face of the glass cover plate at least, the binding face of the liquid crystal display and the binding face of the glass cover plate are attached, and the liquid adhesive is bonded in a gap between the liquid crystal display and the glass cover plate. The attaching attention is to avoid air remaining in the gap between the liquid crystal display panel and the glass cover plate, i.e. to avoid air being mixed into the liquid adhesive to affect the adhesive property of the liquid adhesive.
Step 30: providing a paraffin blocking wall in a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside;
after the liquid crystal display screen and the glass cover plate are attached, air can contact the liquid adhesive in the peripheral area of the gap between the liquid crystal display screen and the glass cover plate in the UV curing process and even can enter the liquid adhesive in the peripheral area of the gap between the liquid crystal display screen and the glass cover plate, in order to prevent oxygen in the air from generating oxygen inhibition effect with the liquid adhesive in the peripheral area of the gap, a paraffin blocking wall is arranged in the peripheral area of the gap between the liquid crystal display screen and the glass cover plate, the wall thickness of the paraffin blocking wall can be about 2 mm-5 mm, the liquid adhesive in the peripheral area of the gap is isolated from the outside, particularly the liquid adhesive in the peripheral area of the gap is isolated from oxygen and moisture in the air, and the paraffin is incompatible with organic resin materials such as the liquid adhesive, so the paraffin can not permeate into the liquid adhesive, the liquid adhesive has the advantages that air is isolated from entering the liquid adhesive, oxygen in the air and the liquid adhesive are prevented from generating oxygen inhibition, and therefore the influence on the quality of the liquid crystal display is avoided.
Step 40: the liquid adhesive is subjected to a UV curing process.
After the liquid crystal display screen and the glass cover plate are attached, a paraffin blocking wall is arranged in the peripheral area of the gap between the liquid crystal display screen and the glass cover plate, the liquid adhesive in the peripheral area of the gap is isolated from the outside, and then the liquid adhesive is subjected to UV curing treatment. Therefore, in the process of carrying out UV curing treatment on the liquid adhesive, the paraffin blocking wall can prevent air from contacting the liquid adhesive in the gap between the liquid crystal display screen and the glass cover plate, so that the liquid adhesive is prevented from generating an oxygen inhibition effect, the liquid adhesive is ensured to be completely cured without generating a light inhibition effect, the liquid adhesive is prevented from overflowing from the peripheral area of the gap in the curing process, and the product quality of the display is improved. The yield of the bonding process for obtaining the liquid crystal display screen and the glass cover plate of the liquid crystal display by the bonding process for the liquid crystal display provided by the embodiment of the specification is 95%.
In consideration of the melting point of paraffin, a cold light source LED can be used for UV curing treatment, so that the paraffin is not melted during the UV curing treatment.
Referring to FIG. 2, in some embodiments, step 10: before at least coating liquid adhesive on the liquid crystal display screen or the glass cover plate, the attaching process provided by the embodiment of the specification further comprises the following steps:
step 50: at least arranging a liquid crystal display screen or a glass cover plate in the vacuumizing cavity;
the liquid crystal display screen or the glass cover plate is arranged in the vacuum-pumping chamber, or the liquid crystal display screen and the glass cover plate are all arranged in the vacuum-pumping chamber, so that the liquid adhesive can be coated in a vacuum-pumping state when the liquid adhesive is coated. The air pressure in the evacuation chamber here may be a vacuum or a near vacuum such as 2 kpa.
Correspondingly, step 10: at least coating a liquid adhesive on the liquid crystal display screen or the glass cover plate, wherein the liquid adhesive specifically comprises:
step 100: a liquid adhesive is applied to the liquid crystal display panel or the glass cover plate in the evacuation chamber.
The liquid adhesive is coated on the binding face of the liquid crystal display screen or the binding face of the glass cover plate in the vacuumizing cavity, and the liquid adhesive can also be coated on the binding face of the liquid crystal display screen and the binding face of the glass cover plate respectively, so that the air is prevented from being doped in the liquid adhesive coated on the liquid crystal display screen or the glass cover plate as much as possible, and the coating effect of the coated liquid adhesive is improved.
Referring to FIG. 3, in some embodiments, step 20: before attaching liquid crystal display and glass apron, liquid adhesive bonds in the clearance between liquid crystal display and the glass apron, the laminating technology that this specification embodiment provided still includes:
step 60: arranging a liquid crystal display screen and a glass cover plate in an vacuumizing chamber;
the purpose of setting up liquid display screen and glass apron in evacuation chamber is in the same place liquid display screen and glass apron are attached in evacuation chamber to liquid adhesive bonds between liquid display screen and glass apron, and the air stays between liquid display screen and glass apron when can avoiding liquid display screen and glass apron to be attached, and then contacts liquid adhesive, mixes in the liquid adhesive even, thereby avoids oxygen in the air, moisture and liquid adhesive to take place oxygen and hinder the polymerization.
Correspondingly, step 20: with liquid crystal display and glass apron are attached, liquid adhesive bonds in the clearance between liquid crystal display and the glass apron, specifically includes:
step 200: the liquid crystal display panel and the glass cover plate are attached together in the evacuation chamber, and the liquid adhesive is bonded between the liquid crystal display panel and the glass cover plate.
The liquid crystal display screen and the glass cover plate in the vacuumizing cavity are attached together, and the liquid adhesive is bonded between the liquid crystal display screen and the glass cover plate, so that oxygen, moisture and the liquid adhesive in the air are prevented from generating oxygen inhibition, and the quality and the process yield of liquid crystal display products are improved.
Referring to fig. 4, in some embodiments, the bonding process provided in the embodiments of the present description, step 30: the paraffin wax blocking wall is arranged at the peripheral area of the gap so as to isolate the liquid adhesive in the peripheral area of the gap from the outside, and the paraffin wax blocking wall specifically comprises:
step 300: and spraying molten paraffin wax on the peripheral area of the gap, and cooling to obtain a paraffin wax blocking wall for isolating the liquid adhesive in the peripheral area of the gap from the outside.
The liquid crystal display screen and the glass cover plate are attached together, and after the liquid adhesive is bonded between the liquid crystal display screen and the glass cover plate, the paraffin in a molten state is sprayed on the peripheral area of the gap, and the paraffin in the molten state is cooled to obtain a paraffin blocking wall, so that the liquid adhesive in the gap between the liquid crystal display screen and the glass cover plate can be blocked from the outside, and the influence of oxygen in the outside air on the liquid adhesive is avoided.
Referring to fig. 5, in some embodiments, the bonding process provided in the embodiments of the present description, step 40: the UV curing treatment of the liquid adhesive specifically comprises the following steps:
step 400: the liquid adhesive was subjected to UV curing treatment in a state where the outside of the paraffin blocking wall was evacuated.
After the paraffin blocking wall is formed between the liquid adhesive in the peripheral area of the gap and the outside, when the liquid adhesive is subjected to UV curing treatment, the liquid adhesive can be subjected to UV curing treatment in a state that the outer side of the paraffin blocking wall is vacuumized, along with the temperature rise of the liquid adhesive between the liquid crystal display screen, the glass cover plate and the liquid adhesive positioned between the liquid crystal display screen and the glass cover plate during the UV curing treatment, if air is reserved in the liquid adhesive positioned between the liquid crystal display screen and the glass cover plate, the reserved air can move to the position near the paraffin blocking wall under the action of the internal and external pressure difference of the paraffin blocking wall, and the paraffin blocking wall can be discharged due to the fact that the temperature of the UV curing is too high and the paraffin blocking wall melts.
The following is an example with reference to experimental data.
Example 1
1. Coating UV curing glue on the liquid crystal display screen;
2. attaching the liquid crystal display screen to the glass cover plate, and bonding glue in a gap between the liquid crystal display screen and the glass cover plate;
3. a paraffin blocking wall is arranged at the peripheral area of the gap for isolating the liquid adhesive in the peripheral area of the gap from the outside, and the thickness of the paraffin blocking wall is 2 mm;
4. carrying out UV curing treatment on the liquid adhesive, wherein the temperature of the surface of the glass cover plate is 55 ℃ during UV curing, and the UV curing time is 15 s;
4. and detecting that the glue layer in the gap between the liquid crystal display screen and the glass cover plate after UV curing has no oxygen inhibition effect.
Example 2
1. Coating a liquid adhesive on the glass cover plate;
2. attaching the liquid crystal display screen to the glass cover plate, and bonding glue in a gap between the liquid crystal display screen and the glass cover plate;
3. a paraffin blocking wall is arranged at the peripheral area of the gap for isolating the liquid adhesive in the peripheral area of the gap from the outside, and the thickness of the paraffin blocking wall is 3 mm;
4. carrying out UV curing treatment on the liquid adhesive, wherein the temperature of the surface of the glass cover plate is 45 ℃ during UV curing, and the UV curing time is 20 s;
5. and detecting that the phenomenon of oxygen inhibition does not occur in the glue layer in the gap between the liquid crystal display screen and the glass cover plate after UV curing.
Example 3
1. Coating a liquid adhesive on at least the liquid crystal display panel;
2. attaching the liquid crystal display screen to the glass cover plate, and bonding glue in a gap between the liquid crystal display screen and the glass cover plate;
3. a paraffin blocking wall is arranged at the peripheral area of the gap for isolating the liquid adhesive in the peripheral area of the gap from the outside, and the thickness of the paraffin blocking wall is 4 mm;
4. carrying out UV curing treatment on the liquid adhesive, wherein the temperature of the surface of the glass cover plate is 40 ℃ during UV curing, and the UV curing time is 30 s;
5. and detecting that the phenomenon of oxygen inhibition does not occur in the glue layer in the gap between the liquid crystal display screen and the glass cover plate after UV curing.
Through the technical scheme, in the laminating process for the display provided by the application, firstly, the liquid adhesive is coated on the liquid crystal display screen or the glass cover plate, the liquid adhesive can also be coated on the liquid crystal display screen and the glass cover plate respectively, then the liquid crystal display screen is attached to the glass cover plate, the liquid adhesive is bonded in the gap between the liquid crystal display screen and the glass cover plate, then the paraffin blocking wall is arranged in the peripheral area of the gap, so that the liquid adhesive in the peripheral area of the gap can be isolated from the outside, and finally, the UV curing treatment is carried out on the liquid adhesive between the liquid crystal display screen and the glass cover plate. It can be seen that in the attaching process for the display provided by the application, the paraffin blocking wall is arranged at the peripheral position of the gap between the liquid crystal display and the glass cover plate after the liquid crystal display and the glass cover plate are attached, and as the paraffin and the organic resin such as the liquid adhesive mentioned in the application have incompatibility, the paraffin cannot permeate into the colloid, so that the oxygen inhibition effect can be achieved by isolating oxygen in the air and water from the liquid adhesive.
Example two
Referring to fig. 6, a bonding apparatus for a liquid crystal display includes a spray valve dispenser (not shown), a first support 10, a second support 20, and a rotating shaft (not shown) for respectively mounting the first support 10 and the second support 20, the first support 10 is used for mounting a liquid crystal display, the second support 20 is used for mounting a glass cover plate, the first support 10 and the second support 20 relatively rotate on the rotating shaft and move up and down along the rotating shaft, when the first support frame is used for mounting the liquid crystal display screen, and the second support frame is used for mounting the glass cover plate, the paraffin blocking wall 40 after cooling is obtained by spraying molten paraffin on the peripheral area of the gap between the first support frame 10 and the second support frame 20 by the valve spraying dispenser after the first support frame 10 and the second support frame 20 are buckled, and the liquid adhesive 30 in the peripheral area of the gap is isolated from the outside by the paraffin blocking wall.
The liquid crystal display is installed on first support 10, and the glass apron is installed on second support 20, for example will install first support frame 10 of liquid crystal display and move down after coating liquid adhesive on the glass apron, until can with second support frame 20 lock, also be exactly that the face that liquid crystal display and glass apron are relative is the binding face. It should be noted that the longitudinal cross-sectional dimensions, i.e., the thicknesses, of the liquid crystal display panel and the glass cover plate are respectively smaller than the thickness of the first support frame 10 and the thickness of the second support frame 20.
After the liquid crystal display screen and the glass cover plate are attached, a valve dispenser is adopted to spray molten paraffin on the peripheral area of the gap between the liquid crystal display screen and the glass cover plate, and the molten paraffin is cooled to obtain a paraffin blocking wall 40, so that the liquid adhesive 30 in the peripheral area of the gap is isolated from the outside, and the liquid adhesive 30 is isolated from oxygen in the outside air.
Referring to fig. 7, in some embodiments, the bonding apparatus provided in the embodiments of the present disclosure further includes a vacuum pump (not shown), the first support frame 10 and the second support frame 20 are fastened to form a sealed space 50 in a peripheral region of a gap between the first support frame 10 and the second support frame 20, the vacuum pump is communicated to the sealed space 50 through a suction line, and the vacuum pump is configured to vacuum an outer side of the paraffin blocking wall when the liquid adhesive is subjected to the UV curing process.
In the bonding apparatus for a display provided in the embodiment of the present disclosure, after the first support frame 10 and the second support frame 20 are fastened, the sealed space 50 is formed in the peripheral area of the gap between the first support frame 10 and the second support frame 20, and the vacuum pump is communicated to the sealed space 50, so that when the liquid adhesive is subjected to the UV curing treatment, the vacuum pump performs vacuum pumping on the outer side of the paraffin blocking wall, thereby ensuring smooth discharge of air remaining in the liquid adhesive in the gap. Through the technical scheme, in the laminating process for the display provided by the application, firstly, the liquid adhesive is coated on the liquid crystal display screen or the glass cover plate, the liquid adhesive can also be coated on the liquid crystal display screen and the glass cover plate respectively, then the liquid crystal display screen is attached to the glass cover plate, the liquid adhesive is bonded in the gap between the liquid crystal display screen and the glass cover plate, then the paraffin blocking wall is arranged in the peripheral area of the gap, so that the liquid adhesive in the peripheral area of the gap can be isolated from the outside, and finally, the UV curing treatment is carried out on the liquid adhesive between the liquid crystal display screen and the glass cover plate. It can be seen that in the attaching process for the display provided by the application, the paraffin blocking wall is arranged at the peripheral position of the gap between the liquid crystal display and the glass cover plate after the liquid crystal display and the glass cover plate are attached, and as the paraffin and the organic resin such as the liquid adhesive mentioned in the application have incompatibility, the paraffin cannot permeate into the colloid, so that the oxygen inhibition effect can be achieved by isolating oxygen in the air and water from the liquid adhesive.
EXAMPLE III
Further, an embodiment of the present specification provides a liquid crystal display including a liquid crystal display panel, a glass cover plate, and a UV-cured liquid adhesive disposed in a peripheral region of a gap between the liquid crystal display panel and the glass cover plate, wherein the UV-cured liquid adhesive disposed in at least the spaced peripheral region is free from oxygen inhibition; the liquid crystal display is prepared by the following steps:
step 10: coating a liquid adhesive on at least the liquid crystal display panel or the glass cover plate;
when the liquid crystal display screen of the liquid crystal display is attached to the glass cover plate, a liquid adhesive is coated on the attaching surface of the liquid crystal display screen or the attaching surface of the glass cover plate, or the liquid adhesive is coated on the attaching surface of the liquid crystal display screen and the attaching surface of the glass cover plate respectively, and the liquid adhesive can be common UV curing adhesive.
When the traditional liquid crystal display is attached to the glass cover plate, the liquid adhesive in the gap between the liquid crystal display and the glass cover plate can generate oxygen polymerization inhibition with oxygen and moisture in the air, and the oxygen and the moisture in the air can generate polymerization inhibition on free radical polymerization of a light curing material in the liquid adhesive, so that in a glue layer formed after the liquid adhesive is cured, particularly, viscous oil oxides appear on the surface of the glue layer in the peripheral area of the gap or in the inside of the glue layer in the peripheral area of the gap after the liquid adhesive is cured, and the product quality and the display parallax of the display are affected. The bonding process for the display provided by the embodiment of the specification can be implemented after the liquid crystal display and the glass cover plate are bonded, and before UV curing, a paraffin blocking wall is arranged in the peripheral area of the liquid adhesive in the gap between the liquid crystal display and the glass cover plate, so that the liquid adhesive in the peripheral area of the gap is isolated from the outside, and the liquid adhesive is prevented from generating oxygen inhibition with oxygen and moisture in the outside air. The paraffin blocking wall made of paraffin materials is arranged because paraffin cannot be compatible with organic resin materials such as liquid adhesives, so that paraffin cannot permeate into the liquid adhesives, and the paraffin blocking wall plays a role in isolating the liquid adhesives in the gap between the liquid crystal display screen and the glass cover plate from the outside.
Step 20: attaching the liquid crystal display screen to the glass cover plate, and bonding a liquid adhesive in a gap between the liquid crystal display screen and the glass cover plate;
after coating the liquid adhesive on the binding face of the liquid crystal display or the binding face of the glass cover plate at least, the binding face of the liquid crystal display and the binding face of the glass cover plate are attached, and the liquid adhesive is bonded in a gap between the liquid crystal display and the glass cover plate. The attaching attention is to avoid air remaining in the gap between the liquid crystal display panel and the glass cover plate, i.e. to avoid air being mixed into the liquid adhesive to affect the adhesive property of the liquid adhesive.
Step 30: providing a paraffin blocking wall in a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside;
after the liquid crystal display panel and the glass cover plate are attached, air may contact the liquid adhesive in the peripheral area of the gap between the liquid crystal display panel and the glass cover plate and may even enter the liquid adhesive in the peripheral area of the gap between the liquid crystal display panel and the glass cover plate during the UV curing process, in order to prevent oxygen in the air from generating oxygen inhibition with the liquid adhesive in the peripheral area of the gap, a paraffin blocking wall is provided in the peripheral area of the gap between the liquid crystal display panel and the glass cover plate in order to isolate the liquid adhesive in the peripheral area of the gap from the outside, particularly to isolate the liquid adhesive in the peripheral area of the gap from oxygen and moisture in the air, since paraffin is incompatible with organic resin materials such as liquid adhesive, paraffin does not permeate into the liquid adhesive, and plays a role of isolating air from entering the liquid adhesive, the oxygen in the air and the liquid adhesive are prevented from generating oxygen inhibition, thereby avoiding the influence on the quality of the liquid crystal display.
Step 40: the liquid adhesive is subjected to a UV curing process.
After the liquid crystal display screen and the glass cover plate are attached, a paraffin blocking wall is arranged in the peripheral area of the gap between the liquid crystal display screen and the glass cover plate, the liquid adhesive in the peripheral area of the gap is isolated from the outside, and then the liquid adhesive is subjected to UV curing treatment. Therefore, in the process of carrying out UV curing treatment on the liquid adhesive, the paraffin blocking wall can prevent air from contacting the liquid adhesive in the gap between the liquid crystal display screen and the glass cover plate, so that the liquid adhesive is prevented from generating an oxygen inhibition effect, the liquid adhesive is ensured to be completely cured without generating a light inhibition effect, the liquid adhesive is prevented from overflowing from the peripheral area of the gap in the curing process, and the product quality of the display is improved.
In some embodiments, the liquid crystal display provided by the embodiments of the present disclosure, the UV-cured liquid adhesive is further disposed in other areas of the gap between the liquid crystal display panel and the glass cover plate, and air or oxygen is not present in the UV-cured liquid adhesive disposed in other areas of the gap between the liquid crystal display panel and the glass cover plate; the liquid crystal display is prepared by the following steps:
step 10: coating a liquid adhesive on at least the liquid crystal display panel or the glass cover plate;
when the liquid crystal display screen of the liquid crystal display is attached to the glass cover plate, a liquid adhesive is coated on the attaching surface of the liquid crystal display screen or the attaching surface of the glass cover plate, or the liquid adhesive is coated on the attaching surface of the liquid crystal display screen and the attaching surface of the glass cover plate respectively, and the liquid adhesive can be common UV curing adhesive.
When the traditional liquid crystal display is attached to the glass cover plate, the liquid adhesive in the gap between the liquid crystal display and the glass cover plate can generate oxygen polymerization inhibition with oxygen and moisture in the air, and the oxygen and the moisture in the air can generate polymerization inhibition on free radical polymerization of a light curing material in the liquid adhesive, so that in a glue layer formed after the liquid adhesive is cured, particularly, viscous oil oxides appear on the surface of the glue layer in the peripheral area of the gap or in the inside of the glue layer in the peripheral area of the gap after the liquid adhesive is cured, and the product quality and the display parallax of the display are affected. The bonding process for the display provided by the embodiment of the specification can be implemented after the liquid crystal display and the glass cover plate are bonded, and before UV curing, a paraffin blocking wall is arranged in the peripheral area of the liquid adhesive in the gap between the liquid crystal display and the glass cover plate, so that the liquid adhesive in the peripheral area of the gap is isolated from the outside, and the liquid adhesive is prevented from generating oxygen inhibition with oxygen and moisture in the outside air. The paraffin blocking wall made of paraffin materials is arranged because paraffin cannot be compatible with organic resin materials such as liquid adhesives, so that paraffin cannot permeate into the liquid adhesives, and the paraffin blocking wall plays a role in isolating the liquid adhesives in the gap between the liquid crystal display screen and the glass cover plate from the outside.
Step 60: arranging a liquid crystal display screen and a glass cover plate in an vacuumizing chamber;
the purpose of setting up liquid display screen and glass apron in evacuation chamber is in the same place liquid display screen and glass apron are attached in evacuation chamber to liquid adhesive bonds between liquid display screen and glass apron, and the air stays between liquid display screen and glass apron when can avoiding liquid display screen and glass apron to be attached, and then contacts liquid adhesive, mixes in the liquid adhesive even, thereby avoids oxygen in the air, moisture and liquid adhesive to take place oxygen and hinder the polymerization.
Step 200: the liquid crystal display panel and the glass cover plate are attached together in the evacuation chamber, and the liquid adhesive is bonded between the liquid crystal display panel and the glass cover plate.
The liquid crystal display screen and the glass cover plate in the vacuumizing cavity are attached together, and the liquid adhesive is bonded between the liquid crystal display screen and the glass cover plate, so that oxygen, moisture and the liquid adhesive in the air are prevented from generating oxygen inhibition, and the quality and the process yield of liquid crystal display products are improved.
Step 30: providing a paraffin blocking wall in a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside;
after the liquid crystal display panel and the glass cover plate are attached, air may contact the liquid adhesive in the peripheral area of the gap between the liquid crystal display panel and the glass cover plate and may even enter the liquid adhesive in the peripheral area of the gap between the liquid crystal display panel and the glass cover plate during the UV curing process, in order to prevent oxygen in the air from generating oxygen inhibition with the liquid adhesive in the peripheral area of the gap, a paraffin blocking wall is provided in the peripheral area of the gap between the liquid crystal display panel and the glass cover plate in order to isolate the liquid adhesive in the peripheral area of the gap from the outside, particularly to isolate the liquid adhesive in the peripheral area of the gap from oxygen and moisture in the air, since paraffin is incompatible with organic resin materials such as liquid adhesive, paraffin does not permeate into the liquid adhesive, and plays a role of isolating air from entering the liquid adhesive, the oxygen in the air and the liquid adhesive are prevented from generating oxygen inhibition, thereby avoiding the influence on the quality of the liquid crystal display.
Step 40: the liquid adhesive is subjected to a UV curing process.
After the liquid crystal display screen and the glass cover plate are attached, a paraffin blocking wall is arranged in the peripheral area of the gap between the liquid crystal display screen and the glass cover plate, the liquid adhesive in the peripheral area of the gap is isolated from the outside, and then the liquid adhesive is subjected to UV curing treatment. Therefore, in the process of carrying out UV curing treatment on the liquid adhesive, the paraffin blocking wall can prevent air from contacting the liquid adhesive in the gap between the liquid crystal display screen and the glass cover plate, so that the liquid adhesive is prevented from generating an oxygen inhibition effect, the liquid adhesive is ensured to be completely cured without generating a light inhibition effect, the liquid adhesive is prevented from overflowing from the peripheral area of the gap in the curing process, and the product quality of the display is improved.
In some embodiments, the liquid crystal display provided by the embodiments of the present disclosure, the UV-cured liquid adhesive is further disposed in other areas of the gap between the liquid crystal display panel and the glass cover plate, and air or oxygen is not present in the UV-cured liquid adhesive disposed in other areas of the gap between the liquid crystal display panel and the glass cover plate; the liquid crystal display is prepared by the following steps:
step 10: coating a liquid adhesive on at least the liquid crystal display panel or the glass cover plate;
when the liquid crystal display screen of the liquid crystal display is attached to the glass cover plate, a liquid adhesive is coated on the attaching surface of the liquid crystal display screen or the attaching surface of the glass cover plate, or the liquid adhesive is coated on the attaching surface of the liquid crystal display screen and the attaching surface of the glass cover plate respectively, and the liquid adhesive can be common UV curing adhesive.
When the traditional liquid crystal display is attached to the glass cover plate, the liquid adhesive in the gap between the liquid crystal display and the glass cover plate can generate oxygen polymerization inhibition with oxygen and moisture in the air, and the oxygen and the moisture in the air can generate polymerization inhibition on free radical polymerization of a light curing material in the liquid adhesive, so that in a glue layer formed after the liquid adhesive is cured, particularly, viscous oil oxides appear on the surface of the glue layer in the peripheral area of the gap or in the inside of the glue layer in the peripheral area of the gap after the liquid adhesive is cured, and the product quality and the display parallax of the display are affected. The bonding process for the display provided by the embodiment of the specification can be implemented after the liquid crystal display and the glass cover plate are bonded, and before UV curing, a paraffin blocking wall is arranged in the peripheral area of the liquid adhesive in the gap between the liquid crystal display and the glass cover plate, so that the liquid adhesive in the peripheral area of the gap is isolated from the outside, and the liquid adhesive is prevented from generating oxygen inhibition with oxygen and moisture in the outside air. The paraffin blocking wall made of paraffin materials is arranged because paraffin cannot be compatible with organic resin materials such as liquid adhesives, so that paraffin cannot permeate into the liquid adhesives, and the paraffin blocking wall plays a role in isolating the liquid adhesives in the gap between the liquid crystal display screen and the glass cover plate from the outside.
Step 20: attaching the liquid crystal display screen to the glass cover plate, and bonding a liquid adhesive in a gap between the liquid crystal display screen and the glass cover plate;
after coating the liquid adhesive on the binding face of the liquid crystal display or the binding face of the glass cover plate at least, the binding face of the liquid crystal display and the binding face of the glass cover plate are attached, and the liquid adhesive is bonded in a gap between the liquid crystal display and the glass cover plate. The attaching attention is to avoid air remaining in the gap between the liquid crystal display panel and the glass cover plate, i.e. to avoid air being mixed into the liquid adhesive to affect the adhesive property of the liquid adhesive.
Step 30: providing a paraffin blocking wall in a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside;
after the liquid crystal display panel and the glass cover plate are attached, air may contact the liquid adhesive in the peripheral area of the gap between the liquid crystal display panel and the glass cover plate and may even enter the liquid adhesive in the peripheral area of the gap between the liquid crystal display panel and the glass cover plate during the UV curing process, in order to prevent oxygen in the air from generating oxygen inhibition with the liquid adhesive in the peripheral area of the gap, a paraffin blocking wall is provided in the peripheral area of the gap between the liquid crystal display panel and the glass cover plate in order to isolate the liquid adhesive in the peripheral area of the gap from the outside, particularly to isolate the liquid adhesive in the peripheral area of the gap from oxygen and moisture in the air, since paraffin is incompatible with organic resin materials such as liquid adhesive, paraffin does not permeate into the liquid adhesive, and plays a role of isolating air from entering the liquid adhesive, the oxygen in the air and the liquid adhesive are prevented from generating oxygen inhibition, thereby avoiding the influence on the quality of the liquid crystal display.
Step 400: the liquid adhesive was subjected to UV curing treatment in a state where the outside of the paraffin blocking wall was evacuated.
After a paraffin blocking wall is formed between the liquid adhesive in the peripheral area of the gap and the outside, when the liquid adhesive is subjected to UV curing treatment, the liquid adhesive can be subjected to UV curing treatment in a state that the outer side of the paraffin blocking wall is vacuumized, along with the temperature rise of the liquid adhesive between the liquid crystal display screen, the glass cover plate and the liquid adhesive positioned between the liquid crystal display screen and the glass cover plate during the UV curing treatment, if air is reserved in the liquid adhesive positioned between the liquid crystal display screen and the glass cover plate, the reserved air can move to the position near the paraffin blocking wall under the action of the internal and external pressure difference of the paraffin blocking wall, and the air is pumped out of the colloid after the paraffin blocking wall is melted under the condition that the temperature of the UV curing is high.
Through the technical scheme, in the laminating process for the display provided by the application, firstly, the liquid adhesive is coated on the liquid crystal display screen or the glass cover plate, the liquid adhesive can also be coated on the liquid crystal display screen and the glass cover plate respectively, then the liquid crystal display screen is attached to the glass cover plate, the liquid adhesive is bonded in the gap between the liquid crystal display screen and the glass cover plate, then the paraffin blocking wall is arranged in the peripheral area of the gap, so that the liquid adhesive in the peripheral area of the gap can be isolated from the outside, and finally, the UV curing treatment is carried out on the liquid adhesive between the liquid crystal display screen and the glass cover plate. It can be seen that in the attaching process for the display provided by the application, the paraffin blocking wall is arranged at the peripheral position of the gap between the liquid crystal display and the glass cover plate after the liquid crystal display and the glass cover plate are attached, and as the paraffin and the organic resin such as the liquid adhesive mentioned in the application have incompatibility, the paraffin cannot permeate into the colloid, so that the oxygen inhibition effect can be achieved by isolating oxygen in the air and water from the liquid adhesive.
In short, the above description is only a preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present specification shall be included in the protection scope of the present specification.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Claims (10)
1. A lamination process for a display, comprising:
coating a liquid adhesive on at least the liquid crystal display panel or the glass cover plate;
attaching the liquid crystal display screen to the glass cover plate, wherein the liquid adhesive is bonded in a gap between the liquid crystal display screen and the glass cover plate;
providing a paraffin blocking wall at a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside;
and carrying out UV curing treatment on the liquid adhesive.
2. The bonding process of claim 1, prior to applying the liquid adhesive to at least one of the liquid crystal display panel or the cover glass, further comprising:
at least arranging the liquid crystal display screen or the glass cover plate in an vacuumizing chamber;
correspondingly, the liquid adhesive is coated on at least the liquid crystal display screen or the glass cover plate, and the method specifically comprises the following steps:
the liquid adhesive is coated on the liquid crystal display panel or the glass cover plate in the evacuation chamber.
3. The process of attaching a liquid crystal display panel to a glass cover plate according to claim 1, the liquid adhesive being applied before bonding in a gap between the liquid crystal display panel and the glass cover plate, the process further comprising:
arranging the liquid crystal display screen and the glass cover plate in an vacuumizing chamber;
correspondingly, the liquid crystal display screen is attached to the glass cover plate, and the liquid adhesive is bonded in a gap between the liquid crystal display screen and the glass cover plate, and the liquid crystal display screen glass cover plate specifically comprises:
the liquid crystal display panel and the glass cover plate are attached together in the evacuation chamber, and the liquid adhesive is bonded between the liquid crystal display panel and the glass cover plate.
4. The attaching process according to any one of claims 1 to 3, wherein a paraffin blocking wall is provided in a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside, and specifically comprises:
and spraying molten paraffin on the peripheral area of the gap, and cooling to obtain the paraffin blocking wall for isolating the liquid adhesive in the peripheral area of the gap from the outside.
5. The attaching process according to claim 4, wherein the UV curing treatment of the liquid adhesive specifically comprises:
and carrying out UV curing treatment on the liquid adhesive under the condition that the outer side of the paraffin blocking wall is vacuumized.
6. A laminating device for a liquid crystal display comprises a spray valve dispenser, a first support frame, a second support frame and a rotating shaft which is respectively provided with the first support frame and the second support frame, the first support frame is used for installing a liquid crystal display screen, the second support frame is used for installing a glass cover plate, the first support frame and the second support frame rotate relatively on the rotating shaft and move up and down along the rotating shaft, when the first support frame is provided with a liquid crystal display screen and the second support frame is provided with a glass cover plate, after the first support frame and the second support frame are buckled, the valve-spraying glue dispenser sprays molten paraffin on the peripheral area of the gap between the first support frame and the second support frame to obtain a cooled paraffin blocking wall, the paraffin blocking wall isolates the liquid adhesive in the peripheral region of the gap from the outside.
7. The bonding apparatus according to claim 6, further comprising a vacuum pump, wherein a sealed space is formed in a peripheral region of a gap between the first support frame and the second support frame after the first support frame and the second support frame are fastened, the vacuum pump is communicated to the sealed space through an air suction pipeline, and the vacuum pump is configured to evacuate an outer side of the paraffin blocking wall when the liquid adhesive is subjected to the UV curing treatment.
8. A liquid crystal display comprising a liquid crystal display panel, a glass cover plate, and a UV-cured liquid adhesive provided in a peripheral area of a gap between the liquid crystal display panel and the glass cover plate, wherein the UV-cured liquid adhesive provided in at least the peripheral area of the gap is free from oxygen inhibition; the liquid crystal display is prepared by the following steps:
coating a liquid adhesive on at least the liquid crystal display panel or the glass cover plate;
attaching the liquid crystal display screen to the glass cover plate, wherein the liquid adhesive is bonded in a gap between the liquid crystal display screen and the glass cover plate;
providing a paraffin blocking wall at a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside;
and carrying out UV curing treatment on the liquid adhesive.
9. The liquid crystal display of claim 8, wherein the UV-cured liquid adhesive is further disposed in other regions of the gap between the liquid crystal display panel and the glass cover plate, and air or oxygen is not present in the UV-cured liquid adhesive disposed in other regions of the gap between the liquid crystal display panel and the glass cover plate; the liquid crystal display is prepared by the following steps:
coating a liquid adhesive on at least the liquid crystal display panel or the glass cover plate;
arranging the liquid crystal display screen and the glass cover plate in an vacuumizing chamber;
attaching the liquid crystal display panel and the glass cover plate together in the evacuation chamber, and the liquid adhesive is bonded between the liquid crystal display panel and the glass cover plate;
providing a paraffin blocking wall at a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside;
and carrying out UV curing treatment on the liquid adhesive.
10. The liquid crystal display of claim 8, wherein the UV-cured liquid adhesive is further disposed in other regions of the gap between the liquid crystal display panel and the glass cover plate, and air or oxygen is not present in the UV-cured liquid adhesive disposed in other regions of the gap between the liquid crystal display panel and the glass cover plate; the liquid crystal display is prepared by the following steps:
coating a liquid adhesive on at least the liquid crystal display panel or the glass cover plate;
attaching the liquid crystal display screen to the glass cover plate, wherein the liquid adhesive is bonded in a gap between the liquid crystal display screen and the glass cover plate;
providing a paraffin blocking wall at a peripheral region of the gap to isolate the liquid adhesive in the peripheral region of the gap from the outside;
and carrying out UV curing treatment on the liquid adhesive under the condition that the outer side of the paraffin blocking wall is vacuumized.
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| CN202010919574.4A CN111999920A (en) | 2020-09-04 | 2020-09-04 | Laminating process and device for liquid crystal display and liquid crystal display |
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| CN202010919574.4A CN111999920A (en) | 2020-09-04 | 2020-09-04 | Laminating process and device for liquid crystal display and liquid crystal display |
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