CN214586329U - Adhesive film for liquid crystal display - Google Patents
Adhesive film for liquid crystal display Download PDFInfo
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- CN214586329U CN214586329U CN202121039721.5U CN202121039721U CN214586329U CN 214586329 U CN214586329 U CN 214586329U CN 202121039721 U CN202121039721 U CN 202121039721U CN 214586329 U CN214586329 U CN 214586329U
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Abstract
The utility model relates to a liquid crystal module discloses a laminating film for LCD, and top-down includes high fog prism membrane (1), high prism membrane (2) of passing through, and the prism turned angle alpha of high fog prism membrane (1) is 45 +/-5, and high prism membrane (2) and high fog prism membrane (1) laminating of passing through are 135 +/-5 to the prism turned angle beta of high prism membrane (2) of passing through. The utility model discloses the prism turned angle alpha of high fog prism membrane is 45 +/-5 to and the prism turned angle beta of high prism membrane of passing through is 135 +/-5 cooperation, and the laminating membrane of the corner of wide angle can produce the display screen of bigger broad width like this, and the user only need cut along coiled material MD direction 0 when cutting the use, can produce 150 cun products at the utmost, and can not waste the material.
Description
Technical Field
The utility model relates to a liquid crystal module especially relates to a laminating film for LCD.
Background
The liquid crystal display technology is the mainstream technology of flat panel display, and as the liquid crystal display becomes more and more widespread, the design of the backlight assembly also needs to be designed according to the situation. In order to ensure the picture quality of the backlight assembly, a plurality of optical films, such as a combination of DOP and P (diffusion sheet bonding brightening + brightening), a combination of POP and D (high-transmittance brightening bonding brightening + diffusion), and a combination of P and D (brightening + diffusion), must be used in the backlight assembly. At present, a backlight assembly is generally provided with a laminated structure of two optical brightness enhancement films, but the existing laminated structure can generate interference and dazzling light when producing products with the size of more than 100 inches, and the POP significance is lost because the haze design is poor, the lamp shadow shielding effect in the backlight is poor, the Newton ring phenomenon is easy to occur, or the brightness loss is large.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the shortcoming of the unable product of producing jumbo size (for example 150 cun) among the prior art, provide a laminating membrane for LCD, can produce the display screen of bigger broad width (for example 150 cun), only need cut along coiled material MD direction 0 when cutting the use.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
the laminating film for the liquid crystal display comprises a high-fog prism film and a high-transmittance prism film from top to bottom, wherein the prism rotation angle alpha of the high-fog prism film is 45 degrees +/-5 degrees, the high-transmittance prism film is laminated with the high-fog prism film, and the prism rotation angle beta of the high-transmittance prism film is 135 degrees +/-5 degrees. The prism of high fog prism membrane and the prism of high prism membrane that passes through all play the spotlight effect, have improved luminance, and can produce the display screen of bigger broad width, can produce 150 cun at most.
Further, the lower surface of the high-haze prism film is covered with a bonding adhesive layer containing haze, and the haze range is 25-35%. The range of the haze contained in the adhesive layer is not too low, so that the lamp shadow shielding effect in backlight can be ensured, the self-flaw shielding performance of the adhesive film is ensured, and the Newton ring phenomenon is avoided; the brightness loss is reduced, the gain effect of the two prism structures is achieved, and the significance of UPOP can be ensured because the brightness is a hard index of the display material.
Further, the back coating containing haze is coated on the lower surface of the high-transmittance prism film, and the haze range is 1-3%. On one hand, the back coating containing the haze in the range can be coated on the surface of PET for resisting scratch and abrasion, so that the process yield is improved; on the other hand, under low haze, the light transmittance of the adhesive film can be improved, and the brightness is increased.
Furthermore, the adhesive layer contains microbeads.
Further, the back coating contains microbeads.
The micro-beads can increase the roughness and prevent the adsorption phenomenon between the upper film and the lower film.
Further, the prism apex angle of the high haze prism film was 90 ° ± 1 °.
Further, the prism apex angle of the high-transmittance prism film is 90 ° ± 1 °.
The utility model discloses owing to adopted above technical scheme, have apparent technological effect:
the prism rotation angle alpha of the high-fog prism film is 45 degrees +/-5 degrees, and the prism rotation angle beta of the high-transparency prism film is 135 degrees +/-5 degrees, so that the laminating film with a large-angle rotation angle can produce a larger display screen with a wide width, a user only needs to cut along the MD direction of a coiled material for cutting, materials are not wasted, the cost is saved, the cost can be saved by at least 14 percent, and a 150-inch product can be produced to the maximum extent; while the traditional laminated film structure cannot meet the production of products with sizes over 85 inches.
The prisms of the high-haze prism film have a light-gathering effect, the luminance is improved, and the attaching adhesive layer containing haze is equivalent to a diffusion film, so that the visual angle is improved; the prism of the high-transmittance prism film plays a role in light condensation, so that the brightness is improved; therefore, the brightness, the visual angle and other performances of the adhesive film can be ensured to meet the requirements of the liquid crystal display module.
Meanwhile, the utility model can solve the problem that the arrangement of the adhesive layer and the back coating layer which both contain haze and microbeads can ensure that the shielding performance can meet the requirements of the liquid crystal display module on the premise of ensuring that the brightness basically achieves the effects of two intensifying and one diffusing; in addition, the glass can be in direct contact with the liquid crystal display panel, interference and glare can be avoided at a large-angle corner, the visual effect reaches the standard, the scratch resistance meets the assembly requirement, and the product stiffness can meet the requirement of a large-size module.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a process diagram for producing a bonded semi-finished product;
fig. 3 is a process diagram for producing a finished product.
The names of the parts indicated by the numerical references in the drawings are as follows: wherein, 1-high fog prism film, 2-high transparent prism film, 3-adhesive layer, 4-back coating, 5-micro bead, alpha-prism rotation angle of high fog prism film, beta-prism rotation angle of high transparent prism film.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
Example 1
As shown in fig. 1, the adhesive film for a liquid crystal display includes a high haze prism film 1 and a high transmittance prism film 2 from top to bottom. The high fog prism film 1 and the high-transmittance prism film 2 both comprise prisms and base films located on the bottom surfaces of the prisms.
The lower surface of the high-haze prism film 1 is covered with a bonding adhesive layer 3 containing haze, the haze is 30%, and the adopted mode is that the haze is diffused in bonding glue, and then the bonding adhesive layer 3 is bonded on the upper surface of the high-lens prism film. The haze contained in the adhesive layer 3 is not too low, so that the lamp shadow shielding effect in backlight can be ensured, the self-flaw shielding performance of the adhesive film is ensured, and the Newton ring phenomenon is avoided; the brightness loss is reduced, the gain effect of the two prism films is achieved, and the significance of UPOP can be ensured because the brightness is a hard index of the display material. The prism rotation angle alpha of the high-fog prism film 1 is 45 degrees, namely the prism structure which is obliquely etched by 45 degrees, and the vertex angle of the prism is 90 degrees. And setting the reference direction A as the length direction of the laminating film, wherein the rotation angle of the prism is the included angle between the length direction of the prism and the reference direction A.
The back coating 4 containing haze is coated on the lower surface of the high-transmittance prism film 2, the haze is 2%, and the back coating 4 containing the haze in the range can be coated on the surface of PET for scratch resistance and abrasion resistance, so that the process yield is improved; on the other hand, under low haze, the light transmittance of the adhesive film can be improved, and the brightness is increased.
The adhesive layer 3 and the back coating 4 both contain the microbeads 5, so that the roughness can be increased, and the adsorption phenomenon between the upper film and the lower film can be prevented.
The prism of the high-haze prism film 1 and the prism of the high-transmittance prism film 2 both have a bottom edge of 60 um.
The prism rotation angle alpha of the high-fog prism film 1 is 45 degrees, and the prism rotation angle beta of the high-transparency prism film 2 is 135 degrees, which is the best rotation angle, so that the laminating film with the rotation angle of large angle can produce a larger display screen with wide width, when a user cuts and uses the laminating film, only the cutting is carried out along the MD direction of the coiled material by 0 degree, and a 150-inch product can be produced to the maximum extent; while the traditional laminated film structure cannot meet the production of products with sizes over 85 inches.
The preparation method comprises the following steps:
step 1, a first layer of structure is a 135-degree prism structure which is obliquely etched, and diffusion haze is made in the bonding glue on the back surface of the first layer of structure, for example, fig. 2 is a process diagram for producing a bonding semi-finished product.
And 2, forming a second layer structure which is an obliquely-etched 45-degree prism structure, attaching the PET surface of the semi-finished product to the first layer, forming the second layer structure into a high-fog top-setting POP, and forming a process diagram of a finished product by using the second layer structure as shown in the figure 3.
Example 2
The adhesive film for a liquid crystal display comprises a high haze prism film 1 and a high transmittance prism film 2 from top to bottom.
The lower surface of the high-haze prism film 1 is covered with a bonding adhesive layer 3 containing haze, the haze is 35%, and the adopted mode is that the haze is diffused in bonding glue, and then the bonding adhesive layer 3 is bonded on the upper surface of the high-lens prism film. The haze contained in the adhesive layer 3 is not too low, so that the lamp shadow shielding effect in backlight can be ensured, the self-flaw shielding performance of the adhesive film is ensured, and the Newton ring phenomenon is avoided; the brightness loss is reduced, the gain effect of the two prism structures is achieved, and the significance of UPOP can be ensured because the brightness is a hard index of the display material. The prism rotation angle alpha of the high-fog prism film 1 is 46 degrees, namely the prism structure which is obliquely etched by 46 degrees, and the vertex angle of the prism is 90 degrees.
The high-transmittance prism film 2 is attached to the high-fog prism film 1 through the attachment adhesive layer 3, the prism turning angle beta of the high-transmittance prism film 2 is 136 degrees, namely, the prism structure of 136 degrees is obliquely etched, the prism structure is perpendicular to the prism structure of the high-transmittance prism film 2, and the prism vertex angle of the high-transmittance prism film 2 is 90 degrees.
The lower surface of the high-transmittance prism film 2 is coated with a back coating layer 4 containing haze, and the haze is 3%.
The adhesive layer 3 and the back coating 4 both contain the microbeads 5, so that the roughness can be increased, and the adsorption phenomenon between the upper film and the lower film can be prevented.
Example 3
The adhesive film for a liquid crystal display comprises a high haze prism film 1 and a high transmittance prism film 2 from top to bottom.
The lower surface of the high-haze prism film 1 is covered with a bonding adhesive layer 3 containing haze, the haze is 21%, and the mode is adopted, namely the haze is diffused in bonding glue, and then the bonding adhesive layer 3 is bonded on the upper surface of the high-lens prism film. The haze contained in the adhesive layer 3 is not too low, so that the lamp shadow shielding effect in backlight can be ensured, the self-flaw shielding performance of the adhesive film is ensured, and the Newton ring phenomenon is avoided; the brightness loss is reduced, the gain effect of the two prism structures is achieved, and the significance of UPOP can be ensured because the brightness is a hard index of the display material. The prism rotation angle alpha of the high-fog prism film 1 is 44 degrees, namely the prism structure which is obliquely etched by 44 degrees, and the vertex angle of the prism is 90 degrees.
The high-transmittance prism film 2 is attached to the high-fog prism film 1 through the attachment adhesive layer 3, the prism turning angle beta of the high-transmittance prism film 2 is 134 degrees, namely, the prism structure of 134 degrees is obliquely etched, the prism structure of the high-transmittance prism film 2 is perpendicular to the prism structure of the high-transmittance prism film, and the prism vertex angle of the high-transmittance prism film 2 is 90 degrees.
The lower surface of the high-transmittance prism film 2 is coated with a back coating layer 4 containing haze, and the haze is 1.5%.
The adhesive layer 3 and the back coating 4 both contain the microbeads 5, so that the roughness can be increased, and the adsorption phenomenon between the upper film and the lower film can be prevented.
Comparison of tests
Comparative example 1: the adhesive film is a DBEF film composite brightness enhancement film structure; comparative example 2: the laminating film is a PPD film composite bright enhancement film structure.
The adhesive films of examples 1 to 3 were compared with the adhesive films of comparative examples 1 and 2, and the comparison results are shown in table one:
watch 1
| Item | Cost (Yuan/m)2) | Rear view effect of liquid crystal display | Scratch resistance (g) | Luminance of a light |
| Example 1 | 12.0 | Is normal | 2750 | 1320 |
| Example 2 | 12.7 | Is normal | 2730 | 1334 |
| Example 3 | 13.1 | Is normal | 2750 | 1300 |
| Comparative example 1 | 16.4 | Slight interference and glare | 2100 | 1245 |
| Comparative example 2 | 15.2 | Is normal | 3400 | 1272 |
Description of the detection method:
1. testing the brightness of the adhesive film: and (3) lighting the backlight source, placing the backlight source into a testing membrane under normal working current and voltage after the backlight source is stable, testing the 9-point luminance by using SR-3A equipment, and taking an average value.
2. Laminating film cover liquid crystal screen rearview effect: the liquid crystal screen normally works at brightness, and WRGB four colors (under main white field) are observed by eyes at different angles.
3. Testing the scratch resistance of the prism surface: the method comprises the steps of taking 40% haze back coating as a friction material, upwards fixing the friction material on plate glass, downwards placing a surface coating of an article to be tested on the friction material, enabling the direction of a peak of a prism structure to be vertical to the moving direction, placing a protective film on the back of the article to be tested, placing a loading weight on the protective film, drawing the article to be tested at a constant speed, observing under a three-wavelength lamp or a microscope, and taking the maximum weight without obvious scratches as test data.
As can be seen from the table I, under the DLED backlight, the brightness, the scratch resistance and the rear visual effect of the backlight module covered with the liquid crystal screen are all superior to those of the comparative example 1, namely the laminating film can ensure that the backlight module can achieve the effects of two brightness enhancement films and two diffusion films, even superior to the effects, the shielding property can meet the requirements of a liquid crystal display, the backlight module can be directly contacted with the glass of the liquid crystal display panel, the interference and the glare do not exist, the visual effect reaches the standard, and the scratch resistance also meets the assembly requirements. In addition, the cost of the invention is at least 20% lower than that of the DBEF film composite brightness enhancement film structure on the market and at least 14% lower than that of the PPD film composite brightness enhancement film structure.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (9)
1. The laminating film for the liquid crystal display is characterized by comprising a high-fog prism film (1) and a high-transmittance prism film (2) from top to bottom, wherein the prism rotation angle alpha of the high-fog prism film (1) is 45 degrees +/-5 degrees, the high-transmittance prism film (2) is laminated with the high-fog prism film (1), and the prism rotation angle beta of the high-transmittance prism film (2) is 135 degrees +/-5 degrees.
2. The adhesive film for liquid crystal display according to claim 1, wherein the lower surface of the high haze prism film (1) is coated with the adhesive layer (3) containing haze.
3. The bonding film for liquid crystal display according to claim 2, wherein the haze of the bonding adhesive layer (3) is in the range of 25 to 35%.
4. The adhesive film for liquid crystal display according to claim 2 or 3, wherein the adhesive layer (3) contains beads (5).
5. The adhesive film for liquid crystal display according to claim 1, wherein the back coating layer (4) containing haze is coated on the lower surface of the high-transmittance prism film (2).
6. The laminating film for liquid crystal display according to claim 5, wherein the haze of the back coating layer (4) is in the range of 1 to 3%.
7. The adhesive film for liquid crystal display according to claim 5 or 6, wherein the back coating layer (4) contains microbeads (5).
8. The adhesive film for liquid crystal display according to claim 1, wherein the prism apex angle of the high haze prism film (1) is 90 ° ± 1 °.
9. The adhesive film for liquid crystal display according to claim 1, wherein the prism apex angle of the high-transmittance prism film (2) is 90 ° ± 1 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121039721.5U CN214586329U (en) | 2021-05-14 | 2021-05-14 | Adhesive film for liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121039721.5U CN214586329U (en) | 2021-05-14 | 2021-05-14 | Adhesive film for liquid crystal display |
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| Publication Number | Publication Date |
|---|---|
| CN214586329U true CN214586329U (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121039721.5U Active CN214586329U (en) | 2021-05-14 | 2021-05-14 | Adhesive film for liquid crystal display |
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- 2021-05-14 CN CN202121039721.5U patent/CN214586329U/en active Active
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 196 Hezhan Road, Caojing Town, Jinshan District, Shanghai, 201507 Patentee after: Kaixinsen (Shanghai) functional film industry Co.,Ltd. Address before: No. 196 Hezhan Road, Caojing Town, Jinshan District, Shanghai, 201507 Patentee before: CCS (SHANGHAI) FUNCTIONAL FILMS INDUSTRY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |