TW201741733A - Liquid optical clear adhesive (LOCA) curved bonding method and display device - Google Patents

Abstract

The present invention is Liquid Optical Clear Adhesive (LOCA) curved bonding method and display device comprises display module, curve cover lens, blocking walls, and liquid optical clear adhesive layer. There are several blocking walls between display module and curve cover lens. The liquid optical clear adhesive can be injected into the space between display module and curve cover lens. The air between display module and curve cover lens will be extruded when liquid optical clear adhesive is injected. Then liquid optical clear adhesive forms liquid optical adhesive layer and closely fits to display module and curve cover lens without any gap and air. The invention can be substituted bottleneck plane of curve cover lens bonding to achieve high product quality and durability.

Description

Optical glue curved surface bonding method and display device thereof

The invention relates to an optical glue curved surface bonding method and a display device thereof, in particular to a manufacturing method capable of fitting a curved glass and a liquid crystal screen module in a natural atmospheric environment.

According to the conventional optical display, the manufacturing process is distinguished by a bonding technique, and the bonding technique can be divided into two methods: a word-fitting adhesive and a full-surface bonding. Air gap_bonding is to cover the protective glass layer (Cover Lens) and the LCD screen LCM module through double-sided tape, because the production cost is low and the technical threshold is low, but the air gap (air gap) ) After the light is refracted, the image is superimposed, and the image is slightly inferior. The optical bonding uses the Liquid Optical Clear Adhesive to protect the glass layer (Cover Lens) and the liquid crystal. The screen LCM mold fits perfectly. Because the two layers are completely tightly sealed, there is no gap and air layer, there is no overlap caused by light refraction, and there is a high contrast quality. There are also many advantages, such as: the screen does not enter dust, touch The module is also closely combined with the panel to increase the strength, and at the same time, it can effectively reduce the interference caused by the noise generated by the display panel on the touch signal. The all-round fit of all the above advantages has become the best fit solution for the mainstream products in the market. However, the display technology is constantly improving. In order to meet the demand for more realistic images and the visual experience of the three-dimensional space, the protective glass layer (Cover Lens) The application develops from 2D design concept to 3D application, and curved glass as its name suggests is a three-dimensional glass product, which is quite different from the previous 2D flat glass. Its 3D stereoscopic glass appearance has a streamlined and three-dimensional texture with a magnifying effect. Widely used in various fields, the company will gradually replace the existing flat touch glass in the future. Due to the advent of 3D curved glass technology, the industry's fitting technology and the combination of two technologies, the curved glass is not compared. Good fit technology to complete.

In view of the above-mentioned shortcomings, the inventor believes that it has the urgent need to make corrections, and that it has been engaged in the design and manufacture of related products for many years, and has always adhered to the excellent design concept, and researched and created the above disadvantages. After continuous efforts, the optical adhesive curved surface bonding method of the present invention and its display device are finally introduced, which improves the efficacy of the product by correcting the excellent product structure.

The main object of the present invention is an optical glue curved surface bonding method and a display device thereof, and is a method for manufacturing a curved optical display device capable of improving yield and time saving.

For the purpose of the foregoing disclosure, the optical adhesive surface fitting method and the display device thereof comprise the display module, the barrier wall, the light transmissive plate and the liquid glue layer, and the three edges of the display module adjacent to one side thereof There is a barrier wall, and the barrier wall can be set as a retaining wall made of adhesive or a retaining wall of the template. The barrier wall is arranged adjacent to one side of the display module according to different molding methods. At the edge, the number can be three, and the plurality of barrier walls disposed on the display module are in contact with a light-transmitting plate, and the light-transmitting plate is composed of a curved transparent material, and the light is transparent. The plate is attached to the plurality of barrier walls, so that a space is formed between the light-transmitting plate and the display module to inject a liquid glue layer, and the liquid glue layer is composed of a liquid transparent optical glue, and the liquid glue layer The two sides are closely attached to the display module and the light-transmitting plate. Therefore, the structure is formed by a plurality of barrier walls between the display module and the light-transmitting plate, so that the display module and the light-transmitting plate are The container type allows the liquid transparent optical glue to be directly injected between the two, and the display module The air between the light-transmitting plates is pushed by the liquid transparent optical glue to be discharged to the outside, so that the liquid glue layer is closely attached to both the display module and the light-transmitting plate without any gap and air layer, thereby the invention It can improve the bottleneck of the custom curved glass and the display, and achieve high quality and durability of the product, and then become a product that is quite in line with its progress.

1‧‧‧Display module 2‧‧‧Block wall 3‧‧‧Translucent plate 4‧‧‧Liquid layer 51‧‧‧Fixed display module 52‧‧‧ Forming retaining wall 53‧‧‧ Plate 54‧‧‧Inject liquid optical glue 55‧‧‧Cure 56‧‧‧Remove the retaining wall 6‧‧‧Injection space 61‧‧‧ Opening

The first figure is a schematic exploded view of the optical adhesive curved surface display device of the present invention.
The second figure is a block flow diagram of a method for manufacturing an optical adhesive curved surface display device of the present invention.
The third figure is a schematic view of the invention in which all three barrier walls are made of glue.
The fourth figure is a schematic cross-sectional view of the barrier wall of the present invention in a stacked manner.
The fifth figure is a block flow diagram of another manufacturing method of the optical adhesive curved surface display device of the present invention.
The sixth figure is a three-dimensional schematic view of the present invention in which the display module and the light-transmitting plate are closely abutted against a curved stop.
The seventh figure is a schematic diagram of the action of injecting liquid glue into the barrier wall of the two adhesive barrier walls and the template.
The eighth figure is a schematic diagram of the action of injecting liquid glue into the barrier wall of the three templates.

The invention relates to an optical glue curved surface display device, [please refer to the first figure] mainly comprising:

The display module (1) is a substrate of a liquid crystal screen, and the display module (1) is provided with a barrier wall (2) at three edges adjacent to one side;

The barrier wall (2) can be set as a retaining wall made of adhesive or a retaining wall of a template. The barrier wall (2) is disposed adjacent to one side of the display module (1) depending on the molding method. The number of three edges can be three, and the plurality of barrier walls (2) disposed on the display module (1) are in contact with a light-transmitting plate (3);

The light-transmitting plate (3) is composed of a curved transparent material, and the light-transmitting plate (3) is attached to a plurality of barrier walls (2), so that the light-transmitting plate (3) and the display module (1) Between the formation of a space to inject a liquid layer (4), the light-transmitting plate (3) can be made of glass or acrylic material;

The liquid glue layer (4) is composed of a liquid transparent optical adhesive (Optically Clear Resin), and the two sides of the liquid glue layer (4) are closely attached to the display module (1) and the light-transmitting plate (3). .

The manufacturing method of the optical adhesive curved surface display device of the present invention, [please refer to the second and third figures], when the display module (1) and the light transmissive plate (3) are combined, the display module (1) must first be placed. Fixing on a machine in a natural atmospheric environment to complete the action of the fixed display module (51), and then three barrier walls (2) respectively disposed at three adjacent edges of the display module (1). The three barrier walls (2) are retaining walls made of adhesive, and the two sides of a curved transparent plate (3) can be attached to the corresponding two barrier walls (2). The arc concave edge of the light plate (3) is attached to the bottom side barrier wall (2), and the three edges of the display module (1) are solidified to form a retaining wall (52) by heat energy, humidity or UV energy, thereby allowing A light-transmissive plate (53) is attached to one side of the display module (1), and an injection space (6) having an opening (61) is formed between the light-transmitting plate (3) and the display module (1), and then Turn the display module (1) and the light-transmitting plate (3) over the opening (61) In the state, and injecting liquid transparent optical glue into the glue injection space (6), after the action of injecting the liquid optical glue (54), curing (55) injection space by heat energy, humidity or UV energy ( The liquid transparent optical adhesive in 6) allows the liquid transparent optical adhesive to form a liquid adhesive layer (4). Since the liquid adhesive layer (4) is formed by means of injection molding, the air in the injection space (6) is Pushed by the liquid transparent optical adhesive and discharged to the outside through the opening (61), so that the liquid glue layer (4) is completely adhered to both the display module (1) and the light-transmitting plate (3) without any gaps and air layers. The method and apparatus for manufacturing the optical display of the present invention are produced, [see the fourth figure], and the barrier wall (2) on the display module (1) can be stacked up one by one, and can be completed. The curved surface shape closes the arc concave side of the curved panel (3).

[Please refer to Figures 5, 6 and 7] The three barrier walls (2) in the step of forming the retaining wall (52), wherein the two corresponding barrier walls (2) can be made of successively stacked adhesives. The retaining wall and the other blocking wall at the bottom edge (2) are the stoppers of the special curved surface template, through the formation of the retaining wall (52), the laminated transparent plate (53), and the injection of liquid optical glue (54). And the step of curing (55), a curved optical display device structure can be fabricated, and after the step of curing (55) is completed, a step of removing the retaining wall (56) can be added, the removing block The wall (56) is used to separate the template barrier wall (2) on the bottom side of the display module (1) from the display module (1) and the light-transmitting plate (3), so that the barrier wall (2) of the template can be combined with the liquid glue layer. (4) Separation, because the barrier wall (2) of the template can form the retaining wall in the display module (1) quickly and once, compared with the barrier wall (2) made of adhesive, it must be stacked up and solidified one by one. Forming a retaining wall, so the barrier wall of the template (2) can be replaced The barrier wall made of viscose (2), thereby reducing the time and reduce the output of the retaining wall formed viscose consumables, has a more provincial, the cost saving advantages.

[Please refer to the fifth and eighth figures] The three barrier walls (2) in the step of forming the retaining wall (52), the three barrier walls (2) are the stops of the template, and the bottom edge The barrier wall (2) is a stopper of a specially shaped curved template, which is formed by forming a retaining wall (52), attaching the transparent plate (53), injecting the liquid optical adhesive (54), and performing curing (55), that is, A curved optical display device structure can be fabricated. After the step of curing (55) is completed, the step of removing the retaining wall (56) can be performed. The removing the retaining wall (56) is to display the module ( 1) The template barrier wall (2) on the bottom side is separated from the display module (1) and the light-transmitting plate (3), so that the barrier wall (2) of the template can be separated from the liquid glue layer (4) due to the barrier wall of the template ( 2) The retaining wall can be formed in the display module (1) quickly and once, and the barrier wall (2) which is made of adhesive must be stacked up and solidified one by one to form a retaining wall, so the barrier wall of the template (2) ) can replace the barrier wall (2) made of adhesive, and then Less time to form the wall and reduce the output of viscose supplies, having relatively province, the cost saving advantages.

The optical adhesive surface fitting method and the display device thereof have the advantages that the invention is formed by the formation of a plurality of barrier walls between the display module and the light-transmitting plate, so that the display module and the light-transmitting plate are The container type allows the liquid transparent optical glue to be directly injected between the two, and the air between the display module and the light-transmitting plate is pushed by the liquid transparent optical glue to be discharged to the outside, so that the liquid glue layer is closely attached to the display. There is no gap between the module and the light-transmitting plate and the air layer. Therefore, the invention can improve the bottleneck of the conventional curved glass and the display, and achieve high quality and durability of the product, and then become quite compatible. Its progressive product.

In summary, it is understood that the present invention is novel, and the present invention is not found in any publication, and is in compliance with the provisions of Articles 21 and 22 of the Patent Law.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. That is, the equivalent changes and modifications made by the invention in accordance with the scope of the invention are still within the scope of the invention.

1‧‧‧ display module

2‧‧‧Block wall

3‧‧‧light board

4‧‧‧liquid layer

Claims (10)

An optical glue curved surface display device comprising:
a display module, the display module is provided with a barrier wall at three edges adjacent to one side;
The barrier wall is disposed at three edges adjacent to one side of the display module, and the number is three, and the plurality of barrier walls disposed on the display module are attached to a transparent plate Combined
The light-transmitting plate is formed by a curved light-transmissive material, and the light-transmitting plate is attached to a plurality of barrier walls, so that a space is formed between the light-transmitting plate and the display module to inject a liquid glue. Floor;
The liquid glue layer is composed of a liquid transparent optical glue, and the two sides of the liquid glue layer are closely attached to the display module and the light-transmissive plate. According to the optical adhesive curved surface display device of claim 1, wherein the barrier wall of the three edges of the display module, the two corresponding barrier walls are made of viscose material, and the other barrier wall is set as a template. The wall retainer. The optical adhesive curved surface display device according to the first aspect of the patent application, wherein the three barrier walls on the display module are all set as the retaining wall of the adhesive material. The optical adhesive curved surface display device according to claim 3, wherein the barrier wall made of the adhesive is built up in a stacking manner. According to the optical adhesive curved surface display device of claim 1, wherein the three barrier walls of the display module are used as the retaining wall of the template. A manufacturing method, the steps of which are as follows:
The fixed display module, when a display module and a light-transmissive plate are combined, the display module must first be placed on the machine for fixing;
Forming a retaining wall, three barrier walls are respectively disposed at three adjacent edges of the display module;
Laming the light-transmitting plate, the two sides of the transparent plate of the curved surface are attached to the two corresponding barrier walls, and an arc-shaped concave edge of the transparent plate is attached to the barrier wall on the bottom side to make the light-transmitting Forming an injection space with an opening between the board and the display module;
Injecting liquid optical glue, turning the display module and the light-transmitting plate over the opening upward, and injecting the liquid transparent optical glue into the injection space;
Curing is carried out by solidifying the liquid transparent optical adhesive in the injection space by heat energy, humidity or UV energy, so that the liquid transparent optical glue forms a liquid glue layer. The manufacturing method of claim 6, wherein the barrier wall of the three edges of the display module, the corresponding barrier wall material is a retaining wall made of adhesive, and the other barrier wall is For the retaining wall of the stencil, in the process of affixing the transparent slab, the barrier wall made of two adhesives must be cured to make the transparent slab adhere to the barrier wall. According to the manufacturing method of the sixth aspect of the patent application, wherein the barrier wall of the three edges of the display module, the materials of the three barrier walls are all made of adhesive, and the process of bonding the transparent plate In the middle, the three barrier walls must be cured to make the light-transmitting plate adhere to the barrier wall. The manufacturing method according to Item 8 of the patent application, wherein the barrier wall made of the adhesive is built up in a stacking manner. According to the manufacturing method of claim 6, wherein the barrier wall of the three edges of the display module, if the three barrier walls are used as the retaining wall of the template, a removal block must be added after the step of curing In the step of the wall, the removal of the retaining wall removes the three barrier walls from the display module and the light transmissive panel.